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What Would You Like Me to Blog About?Healthy Living
Blogging is an interesting endeavor, quite unlike anything else I have ever experienced before. On the one hand, I have found that most of the blog topics that are my own ideas tend to come from things I am currently wrestling with in my own life or experiences that happen from day to day that impact the message of True Wellness – the basic premise of this blog. On the other hand, there is clearly no doubt that some of my best blogs have come from reader requests. For example, Jamie's blog request a couple of weeks ago on how to feed babies was a brilliant suggestion. It is a topic that I should have blogged about months ago, but simply hadn't because my own children are no longer babies and that sort of thought process is not in the forefront of my mind anymore.
It has recently dawned on me that a mix of blog ideas coming from both sources is probably the way to go. After all, this blog is not for me. It is for you and for my children and your children. Therefore, the topics discussed here should be a blend of the experiences I have had and am currently having on my path of Wellness that may help you on your own journey as well as a conversation about things that you are currently struggling with that perhaps my own experiences can shed some light on.
With that in mind, I am asking you, dear readers, to please comment at the end of this blog with your own blog ideas. If you have more than one idea, then please fire away. I can't guarantee that every idea will be blogged on. I certainly can't blog on something if I don't know anything about the topic suggested! However, I will do my best to blog about every single idea put forth if it makes sense for me to do so. It may take awhile to incorporate them all into this blog's tapestry of topics. For example, sometimes I have a list of blogs lined up for the week, only to put them all on the backburner when something comes along that supercedes all my planning!
I look forward to reading and contemplating every single one of your blog ideas! I am very excited to see what you all will come up with!
Sarah, The Healthy Home Economist
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Comments (41)
Hi Sarah,
My daughter is now four months old and unfortunately I didn't have the knowledge I have now about the risks of vaccinating and she received shots when she was born and at two months. I have decided and have a peace about not vaccinating from here on out, but is there anything I can do to reverse any effects of the vaccines she's gotten already? Thank you and I'm so thankful I found your blog.
Sarah TheHealthyHomeEconomist
Hi Raquel, just an excellent diet in childhood complete with fermented cod liver oil starting at 3 months old (1/4 tsp per day) is the best protection Perhaps a consult with a holistic practitioner in your area if you wish to have her examined for any negative effects.
Dear Sarah,
I am the mom of two amazing unvaccinated sons. One is now a senior in high school who is finishing his college applications. He is extremely bright and very passionate about health and nutrition, as that has been his whole life. Currently his plan is to attend medical school after college and become a Holistic/Integrative M.D. He wants to be a beacon of light and innovate in this area. He looks to the impact that Dr. Norm Shealey and Dr. Andrew Weil have had on their colleagues and the world. He knows that M.D's often listen only to other M.D's, so having this degree will help him have a voice in the scientific community as well as the natural one. What we are now realizing, and did not even anticipate, is that all colleges require vaccines. And in Princeton, they just had a meningitis outbreak that they handled by re-vaccinating the students with a new vaccine from Europe not yet approved here(not that this would help it's trustworthiness)?
Here is some of the news on that:
The other thing is that my husband received several booster vaccines before a mandatory business trip to India. He was always the strong one in the house, now he has been sick more in the past three years since being vaccinated than in our 23 years of marriage together.
Now, honestly, I have this amazing son, who has several food allergies, and I thought managing his food allergies in college was going to be his/our only concern.
I am feeling hopeless and panicked, and that has never been the way I tackle things. But, i can't find a reputable medical school anywhere that allows religious or any exemption from vaccines. Also, being a doctor would require him to get the flu shot every year? I am looking at the colleges, and until he is accepted somewhere, I can't get solid info on possible exemptions.
Please help! Do I remember that you have at least one in high school, close to college research? There must be so very many unvaccinated d kids wanting to go to college….even medical school or serve in healthcare somehow.
Thank you for your time and consideration of this subject. I love reading your blog and I could really use some help and hope.
Warmest regards,
I just came upon your blog tonight and am enthralled. I was wondering if you would discuss the WIC program. It seems to defeat its own purpose to me- it seeks to provide women with a healthy nutritional diet, but since I have been enrolled in the program my shopping standards have had to lower Drastically! Things I would never have bought for myself or considered "healthy" are staples of the program, and I just don't get it. I mean, GMO cereal for your kids? Non-organic milk? The cheapest of the cheap. I understand that it is gov't funded (n'uff said) but why even bother with such a program if the foods they purport to be healthy will actually be harmful in the long run? Or, if THAT is considered to be healthy, what to most people "normally" eat????
I know this post is older, but I would love to read more about your favorite natural/alternative remedies, as there are times when those who eat a healthy diet, still have health issues to address. Examples – first aid type remedies, alternatives to antibiotics, how to use herbs or e.o's – whatever you know most about. I know you are so well-researched that I would love to sneak a peek in your "medicine cabinet."
Thanks for the opportunity to make suggestions! Love the blog; I read and do research in it along with WAP and others.
I would love to see some weekly meal plans for your family. I always plan a week or two in advance, and I'm struggling with some GAPS meal plans and what that looks like for a family. Thank you!
Sarah, The Healthy Home Economist
Hi Kari, believe it or not, I do not meal plan! It just doesn't work for me or my family.
How about the topic of sunscreen for kids? I have read that many people refuse sunscreen for their kids because of the toxins – what is your position on this? If you have the right mix of fats in your diet, do you need sunscreen? Does it depend on where you live?
Thanks! Love your blog!
dione hayward
I am just starting my endeavor to cook traditionaly in our home. I would like to know what kinds of things store well, as we try to have a one year supply of food. Generally I can fruits and vegies for use throughout the winter, but was wondering what types of other things would be found in the food storage of home that cooks traditionaly.
Hi Sarah!
I second the idea about about wanting to see what you keep on hand in your kitchen – from your equipment to your pantry to your fridge. I would love a tour! If that's too personal, perhaps you could just make a checklist or something that we could print off and keep handy to work towards for our own pantries? Just an idea, but I would find it immensely helpful in getting started.
Also, I notice in your videos that you use filtered water for everything – do you have some kind of filtration system under your sink? Could you walk us through your water purification set-up in your home?
Love love love your blog…
Amy Lee
I would like to do a fast after I am done nursing. I want to loose a little weight and detox. I don't think the lemon juice water and maple syrup is what I want to do because lemon can turn the urine alkaline. Do you know of a healthy fast/detox? Thanks for the info on making cream cheese and saurkraut. I am trying more and more tradional preparing of food. You are a super great teacher. Thanks!!!
I have recently learned that my 4 year old has a dairy allergy and it is killing me in the kitchen. I would love a blog post about how to maintain a Nourishing Traditions diet sans dairy. For example, he can't have whey, so what the heck do I soak oatmeal, etc in without giving the oatmeal, etc an off-flavor? Yogurt used to be a daily snack in the house. What the heck do I give him now that has protein and is healthy? Please help! thank you.
Cindy Grogan
I am new to the Healthy Home Economist, but find this blog very interesting. Two ideas for topics come to my mind – sourcing and using marrow bones. The same for fish roe – where to find fish roe and how to use fish roe. Thank you.
Jack Plating
Hey Sarah- perhaps you could dedicate a blog to healthy toothpaste? My mom recently has started making her own tooth soap and has been encouraging us to consider doing the same. I've used Colgate Total for years, this week i read the ingredients list and found triclosan in it! Ahhk! Any recomendations would be good, do you make your own?
Sarah S
I second the comment about blogging on supplements. I am particularly interested in calcium and probiotics.
I love your blog! I only recently started reading it and I appreciate all the information. I have a 4 yr old daughter with ASD and a typical 2 yr old son. We are on GFCF diet, natural biomedical interventions and I would like to second the request to blog about vitamin suppliments, feeding older babies as well as your thoughts about acheiving proper nutrition while on GFCF. Thankfully we started early treatment with my daughter and she is very likely to recover I just want to make sure it happens as fast as possible.
I also have extremely picky eaters. It's tough trying to convert them so I try to make substitutes the best I can but that can drive you crazy. I would love ideas for traveling snacks other than fruits.
I loved your blog post about your weekly menu. I know it would probably be a pain but I would love to see a weekly menu post. Even if it's just a days worth of what you ate that day. You have video Thursday maybe you could have menu Friday : )
Mama G
I just had another thought in the store. Living in Florida with hurricane season around the corner what do you suggest packing to maximize nutrition in an emergency supply kit?
Hi Sarah,
You probably have a healthy list of items to blog about with all the good suggestions above!
Personally, I've been fairly good about following the NT method of food prep but sometimes step out of the loop and have to stumble a bit before getting back into the routine of soaking, fermenting, etc., The biggest challenge I find is planning my meals. Do you write out your menu for the week or do you plan just a few days in advance? What do you do for those times when you get caught up in the day and come home to an empty counter (presumably where the beans or flour are soaking?) Whatever you decide to blog about, I'm sure it'll be an informative read for all. Many thanks!
I see that a lot of people have questions about feeding babies and kids. As some others mentioned, I'd love to have ideas for great snacks for young toddlers and up. With little ones you need an arsenal of snacks to keep them happy when your out. Packaged foods are way to easy to fall back on! What did you give your kids to snack on when they were young?
Thanks so much!
Hi Sarah
I'd be interested in a post on the hidden dangers of personal care products. I've just recently started reading about all of the chemicals in shampoo and soaps and have been looking for info on alternatives.
Juicing is another topic I'd be interested in. I bought a juicer over a year ago and have used it twice. I've read conflicting information on which fruits and vegetables to used and would love a NT view on it.
The soaking grains/nuts debate is pretty interesting to me too because I can't find any sources that don't lead to NT. Would love to hear more on that.
I always love new recipes, especially grain free or sugar free ones.
Love the blog and can't wait for more posts. :o)
Hi, Sarah,
I have been reading conflicting information about soaking and sprouting for grains, beans and nuts. Have you seen the assertions by people like Dr. Ramiel Nagel that according to research, neither soaking nor sprouting remove much phytic acid? Dr. Nagel's article is lengthy and technical, but here is the link (I hope it comes through properly):
His is not the first article I have read in recent months, which questions the effectiveness of soaking and sprouting. I thought I was doing a good thing for my family by doing these extra steps, so now I'm confused. If you are familiar with the research, I would love to read a blog post on this topic.
Hi, a topic that is close to my heart (and attacking my body) is estrogen dominance. I know you've mentioned it in at least one other post. This is something that doesn't just affect people with estrogen dominant diseases, but all people – men, women, and children – and hides behind a variety of symptoms. Right now I am planning a 3+ part post on my blog, but the more people are made aware of it the better. It a major plague of modern lifestyle.
Hi Sarah! I love your blog. You are doing a great job with topics. I particularly enjoy tips on doing the "small" things to help with the health of my family. We're a single income family on a small budget and sometimes it is hard to know where to start. (PS My struggles are food finances, picky children, fatigue, weight gain, and being healthy while pregnant.)
Thanks a Bunch!
Jamie and Trey + One
I love that you are taking blog requests. I have two topics I would love blogged:
Exercise- I know eating the right food is essential for a healthy body, but I also know exercise is too and I lack in that area. What do you feel is the best exercise for us to try and incorporate into our daily routine?
Vaccinations: This is something I think about daily. As of right now Dylan is 4 months old and has not received anything, but I wonder if I am making the right decision. I would love your view and also to know where you find your literature so I can do my own reading and have a peace of mind with my decision I have made.
I would love to have some ideas about healthy snacks for my kids. I am also fairly new to healthy eating and am finding it hard to fill in the between-meal-times, especially since we are homeschoolers and home all the time. My kids are constantly going to the pantry and complaining about "nothing to eat!" Are there any tasty snacks you can make in bulk and freeze? Any ideas would be helpful!
What about fermented foods. I have been afraid to try them.
I would also love to have a healthy foods list for breakfast, lunch, dinner and snacks. I have made my own, but it seems very limited.
And…a how to make butter video. There are great instructions at http://www.ericsons.net/ but I would love to see a video…on it.
Thanks again
We are working our way towards the "wholest" diet we can get. We love nuts around here. Can you do soemthing about the whole spectrum of nuts. Walnuts, almonds, peanuts, pecans. You name it, we love them around here, but I want to make sure we aren't overdoing it and that we are getting the most out of them.
I have 2 suggestions:
Please talk about vitamin supplements. Should we or shouldn't we? How often? what kind? If not, then what is the minimum food we should be eating daily to make sure we have everything we need?
Second: Round stomachs. I know this sounds funny, but how do you get rid of a round stomach? Is it typical after menopause? Is it is sign of undigested food? Grains? I have no health problems and eat well – ie, no sugar, no soda – try to follow NT.
kelly evans
what are your suggestions for those of us who don't have access to raw milk and "real" local farm eggs? i live in orange county and there's nothing… unless it's totally hidden!
Thanks for taking our ideas into account!
I would really love to see some input about transitioning to a true, healthy diet as well. Not only from the food/nourishment perspective, but especially from the logistics of HOW to do it without going crazy (access to the foods) to the relational side of family members who don't understand what you are doing and why!!! Coming from a medical family this has been a big challenge for me.
I am also interested in the food ideas above, and a blog about "What do you need in your kitchen?" would be a great help, too! I often think, if I could just go look in her pantry and cabinets and see the tools and ingredients she has on hand and replicate that (eventually) that would be sooooo helpful!
Thanks again for all you do to help us!
Feeding very picky kids… while being a time stressed parent and without breaking the bank! "real food" is much MUCH more expensive then in the USA up here. Ironic- whole, unprocessed, minimally packaged stuff is easy triple the price! Then after making a $40 dinner it is frustrating when (I think its delish) the little ones are ewwwwwwwwwwwwwwww!
How about working your way through Nourishing Traditions? Not every thing, but highlighting things throughout the book. For the newcomer, it is intimidating to get started. Lots of the recipes assume you already know what you are doing.
Making whey, cream cheese,… I don't have the book in front of me but I am sure you know what I mean. I will look through NT and make some suggestions.
Your blogs and vids could be a great help getting people past the insecurities of getting started.
As some mom's above, I am not only educating my self about traditional foods, I am struggling to make enticing foods. But since we are all recovering from the modern diet we have had to avoid lots of sugars and other carbs (fruit and veggie) temporarily to get balance in the gut. So packing snacks and food for the park is a challenge….lately it is cookie cutter-shaped omelets (pastured eggs). How to travel with raw egg and raw milk eggnog? Little one is getting bored…
Many thanks or your already valuable posts,
I would love to know more about lots of things! I have a 9 year old who is following a vegan path and i am concerned about her hitting puberty and what this could do to her body….she has agreed to add eggs into her diet but will this be enough to get her through. She is on a very soya based diet at the moment. My son 18months has brown stains on his teeth near gum line and little holes. We were vegan and have frantically added eggs and goats milk and cheese to our diets in the hope to stop whatever it is that is causing it. Cannot bring myself to eat meat or fish, and i do still breast feed. Have heard of lots of peole who have a healthy diet who have the same problem even those who are not vegan, have found you via the weston price and nourishing traditons route on the internet. Is adding milk, cheese and eggs to our diet enough?
I know I LOVE anything recipe related!! And, this may sound dumb, but since I am sooooo new to traditional foods- I have a unique problem. As I cut out the fake foods and replace with real foods- sometimes I am so uncertain about what is a truly good and healthy food- then we just don't eat it… and so I am running out of ideas and feel like there really isn't "anything to eat". I've been able to change several BIG areas of our food- but some really simple questions for example grains- specifically rice and pasta- I am still uncertain about… Hope this makes sense!!
You may wish to inform your readers that wild foods are free for the taking if they know where to look. For example, crabapples can be rendered into a lovely, high vitamin C drink rival only to lemonade: Pour boiling water over fruit, allow to sit overnight, simmer until tender, strain pulp: Chill, add to other fruit juices OR just plain with a touch of firstname.lastname@example.com
Mama G
I second the request on older babies/toddlers and would also like to see something on what to feed children as they continue to grow.
I would also love to see something on anemia.
I've been loving your posts on simple dietary changes such as fats and salt. One change a week can really help someone make the switch to real nutrition without overwhelming them.
Sarah, the Healthy Home Economist
I have blogged about vaccines quite a bit – primarily about the insanity of the Swine Flu shot last summer and fall. I am actually in the process of writing a blog about vaccines. It should be posted within a day or so. Welcome to the blog and thank you for commenting!
I'm a new reader, but have you ever done a post about vaccines other than the Vitamin K shot?
I'd also love to see simple, healthy recipes for main meals, veggies and other sides.
Actually I was just thinking this morning about some requests!
Could you do a blog on the right way to feed older babies? I know you just covered the basics for younger babies but for babies in between 1 and 2 yrs of age? Or more specifically, what types of things are important to include in a diet especially for the less-dairy-inclined baby/kid?
So…maybe a blog on how to feed children who cannot tolerate high or "regular" doses of milk/dairy and how to supplement.
Thank you!


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Medtronic PLC plans to consolidate its operations in Mansfield. Company spokesman Fernando Vivanco said Medtronic will consolidate its buildings from four to three. more
By Lori Stabile
A project about creating biodegradable plastics – also known as bioplastics – out of cornstarch, potatoes and milk has made a biotechnology class at East Greenwich High School a finalist in Samsung's "Solve for Tomorrow" contest. more
By Lori Stabile
After sitting out for most of the biotech acquisition frenzy of 2015, Amgen Inc. is ready to do a deal. more
By Caroline Chen
When the University of Rhode Island's Department of Cell and Microbiology saw an opportunity to help address the needs of Rhode Island's biotech and pharmaceutical companies and satisfy student interest, it ran with it. more
By Nancy Kirsch
Medtronic PLC, the world's biggest maker of heart-rhythm devices, met third-quarter profit estimates as its newest products continue to take market share from rivals. more
By Michelle Fay Cortez
Dr. Yow-Pin Lim, founder and CEO of ProThera Biologics in Providence, talks with Providence Business News about his company's partnership with ProMetic Life Sciences Inc., its move last year to the Jewelry District, and how it is on track to start clinical trials of its lead therapeutic product next year. The company currently employs seven. more
By Lori Stabile
Gov. Gina M. Raimondo visited Tech Collective, Rhode Island's information technology and bioscience organization, on Feb. 22 for a roundtable discussion with business leaders about skills that matter. more
By Lori Stabile
Tech Collective is looking for volunteers for GRRL Tech 2016 to assist with workshops and chaperone. Those who work in STEM – science, technology, engineering and math – fields are welcome to apply. more
By Lori Stabile
Medical-device companies, under pressure from hospitals and health insurers to keep expenses down, are capitalizing on strong cash flows and the stumbling stock market to beef up cost-controlling technologies that may be critical to maintaining growth. more
By Michelle Fay Cortez and John Lauerman
The Providence Children's Museum has received a $40,000 grant from the Amgen Foundation to support hands-on science, technology, engineering and math activities. more
By Patricia Daddona

subset: commoncrawl


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Daily Announcements
Please click the links provided to review the announcements for this week.
Do you know a Herndon High School or FCPS employee who does ordinary things in an extraordinary way or goes beyond what is expected? Then, visit www.fcps.edu and click on FCPS Cares to share with everyone. FCPS Cares Cards are also available in the main office.
Panera Bread Fundraiser
Why cook when you can join as at Panera Bread for "Food as it should be"
Please consider joining us tomorrow for our Final Fundraiser of the year in support of SkillsUSA.
Time: 4:00 pm – 8:00 pm
Location: 460 Elden Street, Herndon VA 20170
Attached is a copy of the flyer for the event. When ordering, please present the flyer or an electronic version of the flyer.
Yearbook Distribution
Yearbook distribution will take place in the gym foyer at the concession stand from Friday, June 3 to Thursday, June 9. If you pre-ordered a yearbook a ticket will be delivered to your 6th period classroom on June 1. If you don't have a 6th period or are absent that day, please pick up your ticket from Ms. Eckert.
On Black Days (6/3, 6/7, and 6/9) the yearbook staff will be in the gym foyer concession stand during all lunches and after school from 3:00-3:15pm for distribution and sales.
On Red Days (6/6 and 6/8) the yearbook staff will be in the gym foyer concession stand before school from 7:45-8:00am and after school from 3:00-3:15pm for distribution and sales.
Yearbooks will be available for purchase for $85; cash and checks made payable to HHS are accepted.
Service Learning
Service learning is a teaching method that involves students in authentic and meaningful service to their communities. Connecting classrooms with the community provides a sense of civic responsibility by encouraging students to assess their impact on the community and their roles as active contributors to society. Students who participate in service learning and earn 40 hours may be eligible for a service learning recognition cord at graduation.
All students must input their service learning hours using x2VOL, Herndon's new service learning tool for students! x2VOL by intelliVOL is an award-winning tracking and reporting platform for student service learning hours that is used to customize service goals, centralize service hours and provide diverse service opportunities. x2VOL is available via Family Connection (accessed through BlackBoard) for each student where they can record service hours to be included in their college applications, scholarship applications, or resumes.
In order to receive the Service Learning Cord in time for June graduation, all hours must be entered and approved in x2VOL by June 3, 2016.
Upcoming Volunteer Opportunities – May 30, 2016
Opportunities in x2VOL
- Herndon Festival - June 5th
- Keen Greater DC – Sports Session –June 19th – 12:45pm-2:45pm
- Keen Greater DC – Keen Bowling –June 18th – 1:15pm-3:00pm
- Reminder – students can check x2VOL for opportunities over the summer
Celebrate Fairfax!
https://2016celebfairfax.my-trs.com/ - June 10th-12th at the Fairfax Government Center – Minimum age is 13
National Memorial Day Parade
Students from Fairfax County are invited to march in the National Memorial Day parade which will be held on Monday, May 30th. Depending on their school/teacher, students can earn civics and NJHS hours. We are hoping to have 200 students march in the parade so please promote in your classroom! Here is the form to link for students to sign up:https://docs.google.com/forms/d/1CvUkmPtynCXgYX8VRcA1vGWQ26lo7hi3PsiK49eay6w/viewform
For additional information: http://www.spiritof45.org/memorial_day1.aspx
Please contact Jamie Sawatzky (firstname.lastname@example.com) with questions.
Fairfax County Stewardship – Invasive Management Area
The Invasive Management Area (IMA) Volunteer Program is a community-based project designed to reduce invasive plants on our parklands. This unique, volunteer-led program gives residents an opportunity to connect with people while taking care of the natural resources around us. IMA enables community members to help protect the plants and wildlife of Fairfax County's forests while spending time outdoors, meeting new people and restoring natural habitats.
Opportunities: http://www.fairfaxcounty.gov/parks/resource-management/ima/ima-calendar.htm
- Check FCPS Service Learning Blackboard for announcements, project ideas, and other resources
GenerationOn has teamed up with Hasbro to celebrate kids and teens between 5 and 18 years of age who are making an impact in their local or global communities. The Hasbro Community Action Hero Award recognizes outstanding young volunteers whose service achievements have demonstrated the qualities of a hero - kindness, courage and leadership. Young people can be nominated by an adult or apply themselves by going to www.generationon.org/HCAH. Nominations and applications are being accepted through Monday, June 13, 2016 at 5 pm
Grand Young Actors Camp
REGISTERING NOW FOR GRAND YOUNG ACTORS! CAMP - HHS Drama Boosters run a theatre camp for our young friends - rising 3rd thru rising 6th graders: Grand Young Actors! camp at Herndon HS. Camp is June 28 - July 1st, 9 am - noon. Our director Morganne Davies is the camp director and the counselors are our older teens. The focus is on fun! No prior experience is needed. In past years, we've had shy kids exploring something new and kids who've already know they enjoy performing. Our campers hang out with our HHS student counselor, get to know our Theatre Director, get comfortable with HHS, and enjoy spending time with friends, new and old.
Please share this announcement with your neighbors who have younger kids and with your students and scouts and at dance class and with voice teachers! The camp flyer is on our website, www.herndondrama.org. If you can pass out flyers, please email firstname.lastname@example.com and we will drop off flyers. Thanks!
T.G.F.T. - Thank God For Tutors is a free tutoring service provided to Herndon High School students. All are welcome, whether you are new to a subject or just need help with an old one! We have a group of volunteer tutors who are available each Wednesday on a first come, first served basis. Come to Herndon United Methodist Church, 701 Bennett St., Herndon, VA 20170, right across the street from HHS.
Wednesdays 7:00-8:00pm
For more info: 703-707-6271 or firstname.lastname@example.com or here
Excel Tutoring - begins November 7th
Excel Tutoring will be at Herndon Elementary School Saturday mornings (no 3 day weekends or holidays) from 8:50 – 10:30 am. This program has been going on over 25 years and is a partnership between Herndon High School and Herndon Elementary. This is a wonderful way to earn service hours and have fun tutoring elementary students!!
Dates through December:
November 7, 14, 21
December 5 & 12.
Student Services
During January, February and March all school counselors will meet with each of their rising 10th, 11th, and 12th graders individually to selection courses for the 2016-17 school year. During this time, your child will bring home their course selection materials. It is imperative that you review this information with your student as course offerings are dependent upon enrollment and school staffing decisions are based on the course selections students make. Please know, to ensure appropriate placement, all course selections will be discussed with and reviewed by the school counselor.
Academic Advising and Course Selection Timeline
February 18, 2016
Rising Sophomore Academic Advising, 4th period
February 23 - March 1, 2016
Rising Sophomore Course Selection in Student Services
March 7 - 11, 2016
Make-up Academic Advising & Course Selection
Before March 11, 2016
Requests for course changes will be honored if space in class permits.
March 12 - May 27, 2016
No course request changes will be permitted.
May 30 - June 3, 2016
A copy of the requested course offerings will be mailed home. If space permits, course request changes can be made.
June 6 - 24, 2016
Course request changes will be made only to resolve conflicts, to accommodate credit requirements, and/or because student has failed to meet prerequisite(s).
Herndon HS has a new service learning tool for students! x2VOL by intelliVOL is an award-winning tracking and reporting platform for student service learning hours that is used to customize service goals, centralize service hours and provide diverse service opportunities. x2VOL is available via Family Connection (accessed through BlackBoard) for each student where they can record service hours to be included in their college applications, scholarship applications, or resumes.
Serve. Reflect. Repeat.
Time is on your side with x2VOL. We make it easy to manage your volunteer activities; fast, easy, online. Tracking is easy, and logging hours to meet your school or student organization service requirements is quick. You can find service opportunities, too and write about your experience via Reflections. And we match service opportunities to the things you care about the most, so every hour matters even more.
This is pretty huge: 80% of colleges and universities surveyed by x2VOL agree that service learning history details impact the final decision of admittance.
Volunteering. The more you give the more you get.
For a look at x2VOL and all of its benefits, see the attached flyer and check out this linked video "Fairfax County Public Schools & x2VOL." Please contact Krisna Taylor (firstname.lastname@example.com), HHS Director of Student Services or Mallory Joiner (email@example.com), FCPS Service Learning Resource Teacher with any questions. Thank you!
New online Student Information System
STUDENT INFORMATION SYSTEM - Parent Account Set-Up
This year FCPS is providing SIS Parent Account to Herndon High School families. This will enable access to view attendance, grades, and personal information, establishing another form of communication among student and parents and student and teacher. Also starting September 8, 2015, you must have an active SIS Parent Account to be able to login to FCPS 24-7 Learning. The same login will be used to access both the SIS and FCPS 24-7 systems on this date.
FCPS 24-7 Learning Parent View will provide access to view all of your child's available courses, Family Connection to view Academic and Career Planning and Bus Stop Information. You can also update your child's Emergency Care Information through weCare@school.
SIS Parent Account will provide access to view your child's student information, including attendance, report cards, class schedules, gradebook, course history, discipline, health, and school information, establishing another form of communication between home and school.
Please note that the calendar on the SIS Parent Account does not reflect the teacher's calendar for the class. Continue to consult FCPS 24/7 Blackboard to view the class calendars, announcements, current assignments, and the teachers' grading policies found in the syllabi. The SIS Parent Account also allows students and parents to view student's grades. Once teachers have recorded the grades they will be visible. If there are questions, the parents should discuss the grades with their children for clarification. The expectation is that the student will communicate with both parent and teacher and provide a communication pathway between both.
If you had an active FCPS 24-7 Learning Parent View account by June 18, 2015, you will be able to continue using this account until the beginning of the 2015-16 school year. Each parent has or will receive a letter in the mail providing a web address, activation key, and directions on registering for an SIS Parent account. If you received a letter, but did not act within the allotted 45 days, you can contact our Student Services Department to schedule a time with our Registrar or Student Information Assistant to request a new activation code. We will be available to print new activation codes on Tuesday, September 16th from 6:30-7:00 pm and on Back to School Night, September 29th from 6:00-7:30 pm.
Once you set-up your account here is the link you can use to log in to access your account: https://sisparent.fcps.edu. You will need a registration code to access your account. To learn how you can register your SIS Parent Account (once you have your registration code) please watch this easy to follow video tutorial: http://youtu.be/CUAOZjFvaa0. Additional information is also available here: http://www.fcps.edu/is/instructionaltechnology/247help/parents.shtml.
All Night Grad - Class of 2016
All forms are available in the Black Office as well as online at www.herndonang.org. Committee members will also be selling tickets and fundraiser items at the Spring Sports Banquets as well the Senior Awards Ceremony.
Don't wait any longer…..get your All Night Grad (ANG) Party ticket now! Cost is $70. Free and Reduced ticket prices also available. Party is held at the Herndon Community Center on June 16th from 10:30p-4a. Activities include Casino games and prizes, massages, tattoo, caricature artists, sumo wrestling, obstacle courses, photo booth, money machine, food, food, food, and LOTS of
Think flat screen TVs, iPads, laptops, FitBits, gift cards…..and so much more! The first 225 seniors signed up are GUARANTEED a door prize.
If your senior waits to buy a ticket until June 16, cost is $80 CASH at the door and he/she MUST have a signed/completed form by a parent.
- FINAL ORDER will be placed on Friday June 10 - no exceptions
PREMIUM SEATING FOR GRADUATION RAFFLE - $5/ticket, $20/5 tickets
- Win reserved seating close to the stage to watch your graduate receive his/her diploma
- FINAL winner will be selected on Friday June 10th
- Tuesday, June 14 all day at Pollo Peru located at 1015 Dranesville Road, Sterling
- 15% of ALL sales will be credited to ANG
Ongoing Announcements
Welcome Back Message Prinicpal Bates
Please take a moment to view the welcome back message from Principal Bates.
Connector Bus Passes
FCPS and Fairfax Connector Bus Passes - There is a new partnership between FCPS and Fairfax Connector that will allow students to ride for free during designated times. There is an ID pass that will be issued to students after they and their parent/guardian sign an agreement/permission form. The ID cards will allow students to ride the Fairfax Connector (not METRO) buses for free from 6AM – 8PM Monday through Friday.
Students and parents must sign the agreement form here. Only, currently enrolled HHS students are eligible. Once school begins, bus passes will be available from Mrs. Brinckmeyer in the main office before or after school only.
Parent Teacher Conferences
Herndon High School encourages parents to communicate with teachers in a variety of ways. All parents should use ParentVue and Blackboard to monitor grades and stay updated on instruction, assignments, and upcoming events in each of their child's classes. Parents may also request to receive a progress report from a teacher via e-mail.
If a parent/guardian has a question about their child's progress, we ask that they follow the protocols below prior to requesting a parent-teacher conference:
- Check ParentVue and Blackboard for grades/progress that may answer your question(s).
- If your question(s) is not answered through ParentVue and Blackboard, call/email (703-810-2200) the teacher(s) with whom you would like to speak or from whom you would like to receive information. Contact information is included on the staff directory or on the teacher's webpage.
- If, after a period of ongoing phone or e-mail contact, you feel it is necessary to schedule a face-to-face meeting, you should contact the teacher to arrange a mutually convenient time to meet.
If three or more teachers will be involved in the conference you are requesting, please contact your child's school counselor to arrange a meeting time.
My School Bucks
- Fairfax County Public Schools (FCPS) is converting MyLunchMoney to MySchoolBucks for school year 2015-2016. No convenience fee will be charged.
- After the conversion:
- Your MyLunchMoney e-mail address will become your username
- Your password will stay the same
- Balances on meal accounts will transfer over to MySchoolBucks
- MyLunchMoney settings (Smart Pay) and profile details will transfer over to MySchoolBucks
During the summer, you will receive a welcome e-mail message from MySchoolBucks informing you that your account is ready to use.
We Care
Fairfax County Public Schools is committed to ensuring that the climate in all FCPS facilities is safe and secure. In support of this goal, FCPS provides weCare@school (weCare), an emergency care information system, available to FCPS parents and guardians who have registered for their own Parent account. weCare@school helps manage emergency medical information by enabling parents to enter and update their children's medical data at their convenience.
Information on how to access FCPS 24-7 can be found at this link: FCPS 24-7:Parent View. Also helpdesk support is accessible by contacting FCPS 24-7 Learning Support Center. It is important to note that parents must first validate their identity using the SIS Parent online registration process. If the parent's activation key, that was received by US Mail, has expired, they must contact the school for a new activation key. Once the account is registered, parents can log on to FCPS 24-7 Learning and update their children's medical information, contact information, and physician information at their convenience.
Free and Reduced Lunch
Free and reduced price meal applications are mailed to all households each August. If you do not receive an application in the mail or if you experience an income or household size change, an application is available at your local school or contact Food and Nutrition Services at 703-813-4800 or 703-813-4844.
Free and reduced-price lunches are available to students unable to pay the full price of meals according to criteria based on household size and income. Applications are available in Arabic,Farsi, Korean, Spanish, Urdu, and Vietnamese.
Families who earn less than 130 percent of the poverty level are eligible for free meals and those with incomes between 130 and 185 percent of poverty level qualify for reduced price meals. Today, approximately 24 percent of the student enrollment qualify for free and reduced price meals. The prices for paid breakfast and lunch are determined by the School Board and the price of reduced price meals are established by the federal government.
- 2015-16 Confidential Household Application for Free and Reduced Price Meals
Translations: Arabic, Chinese, Farsi, Korean, Spanish, Urdu, Vietnamese
- 2015-16 Fairfax County Public Schools Consent to Share Information for Benefits for Other Programs
Translations: Arabic, Chinese, Farsi, Korean, Spanish, Urdu, Vietnamese
Once, the application is reviewed by the Food and Nutrition you will receive a letter in the mail detailing your free or reduced lunch status. PLEASE KEEP THE LETTER! It is the only copy that is printed and if lost, it cannot be reproduced. Again, PLEASE KEEP THE LETTER!


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I am a foodie. . . I grew up in NYC, have lived in numerous international destinations - including HaNoi for the last 2 years. Nothing to say except awesome things about the Namaste cuisine. My only complaint would be the atmosphere in the new location. The atmosphere is not as "cozy" - but the food is still top tier!!!
I eat here once per week - although lately more takeout than dine in.
Service: Kind of hit or miss. Vietnamese staff is tough to train for western clientele. Don't be afraid to get their attention, or you may remain hungry.
Atmosphere: Kind of devoid of atmosphere. Get a table by the far wall near the elevator for best location.
Owners: Awesome!!!! They are easy to spot. Get their attention for help with ordering, recommendations, any challenges that you encounter. . . .
And, Enjoy!
Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.


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Grampa Wait for Me! By Michelle B
Spring at the "Gully" in NW Calgary. Grampa and his princess. 38 years ago he was dad and his princess doing the same thing.
May 10, 2011
Family Fun
The "Gully"
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Suggested Itineraries
Icons & Landmarksview details
Take a tour of Calgary at some of our vintage landmarks, or go straight for the big vistas at attractions like the Calgary Tower and WinSport.
Basecamp to Adventureview details
From outdoor adventures and culinary delights to breath taking views and extraordinary sights, Calgary has everything you need to plan 72 hours of adventure.
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|Do you know where your variables are?
Re^4: Perl json parser and JSONP issueby heatblazer (Scribe)
|on Jun 15, 2012 at 15:12 UTC ( #976443=note: print w/ replies, xml )
|Need Help??
Well you are right... it`s kind of confusing... So if I am right, every time I create and record a JSON, I have to convert it to JSONP with wrapping it with the function before calling it back...
In Section Seekers of Perl Wisdom


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Came home from a road trip with a raging throat infection. Decided it would probably be best to see a doctor sooner rather than later. My family first visited an urgent care a bit farther north in Westminster to learn there was a minimum hour wait and six or seven people ahead of us. We then remembered we'd seen this Urgent Care center announcing its recent opening down near 72nd and Sheridan, so off we went.
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Did you Know?The WWE ring, set, and other equipment are transported in 14 18-wheelers. Each truck is also filled to the capacity (about 80,000 pounds).
— Former WWE talent Ed Leslie (a/k/a Brutus Beefcake) said on the Miami sports talk radio show The Dan Le Batard Show with Stugotz Friday that he's joining Hulk Hogan in TNA Wrestling. He noted they're going to be "starting from scratch and going nWo style."
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— Jeff Hardy's next court date is scheduled for Monday, October 25.
See *SEXY* new photos of Tara/Victoria/Lisa Marie/etc ->
sources: PWInsider.com, Pro Wrestling Torch, Wrestling Observer Newsletter


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Money and Power. How Goldman Sachs Came To Rule The World
Money and Power. How Goldman Sachs Came To Rule The World By William D. Cohan
Publisher: Do.ub.le.day 2011 | 672 Pages | ISBN: 184614454X | EPUB File type: PDF | 3 mb
4 mb
From the bestselling, prize-winning author of THE LAST TYCOONS and HOUSE OF CARDS, a revelatory history of Goldman Sachs, the most dominant, feared, and controversial investment bank in the world
For much of its storied 142-year history, Goldman Sachs has projected an image of being better than its competitorssmarter, more collegial, more ethical, and far more profitable. The firmbuttressed by the most aggressive and sophisticated p.r. machine in the financial industryoften boasts of "The Goldman Way," a business model predicated on hiring the most talented people, indoctrinating them in a corporate culture where partners stifle their egos for the greater good, and honoring the "14 Principles," the first of which is "Our clients' interests always come first."
But there is another way of viewing Goldmana secretive money-making machine that has straddled the line between conflict-of-interest and legitimate deal-making for decades; a firm that has exerted undue influence over government since the early part of the 20th century; a company composed of "cyborgs" who are kept in line by an internal "reputational risk department" staffed by former CIA operatives and private investigators; a workplace rife with brutal power struggles; a Wall Street titan whose clever bet against the mortgage market in 2007a bet not revealed to its clientsmay have made the financial ruin of the Great Recession worse.
As William D. Cohan shows in his riveting chronicle of Goldman's rise to the summit of world capitalism, the firm has shown a remarkable ability to weather financial crises, congressional, federal and SEC investigations, and numerous lawsuits, all with its reputation and its enormous profits intact. By reading thousands of pages of government documents, court cases, SEC filings, Freedom of Information Act papers and other sources, and conducting over 100 interviews, including interviews with clients, competitors, regulators, current and former Goldman employees (including the six living men who have run Goldman), Cohan has constructed a vivid narrative that looks behind the veil of secrecy to reveal how Goldman has become so profitable, and so powerful.
Part of the answer is the firm's assiduous cultivation of people in powerdating back to 1913, when Henry Goldman advised the government on how the new Federal Reserve, designed to oversee Wall Street, should be constituted. Sidney Weinberg, who ran the firm for four decades, advised presidents from Roosevelt to Kennedy and was nicknamed "The Politician" for his behind-the-scenes friendships with government officials. Goldman executives ran fundraising efforts for Nixon, Reagan, Clinton and George W. Bush. The firm showered lucrative consulting or speaking fees on figures like Henry Kissinger and Lawrence Summers. Famously, and fatefully, two Goldman leaders Robert Rubin and Henry Paulsonbecame Secretaries of the Treasury, where their actions both before and during the financial crisis of 2008 became the stuff of controversy and conspiracy theories.
Another major strand in the firm's DNA is its eagerness to deal on both sides of a transaction, eliding questions of conflict of interest by the mere assertion of their innate honesty and nobility, a refrain repeated many times in its history, most notoriously by current Goldman CEO Lloyd Blankfein's jesting assertion that he was doing "God's work."
As Michiko Kakutani's New York Times review of HOUSE OF CARDS said, "Cohan writes with an insider's knowledge of the workings of Wall Street, a reporter's investigative instincts and a natural storyteller's narrative command." In MONEY POWER, Cohan has marshaled all these gifts in a powerful and definitive account of an institution whose public claims of virtue look very much like ruthlessness when exposed to the light of day.
PDF from EPUB!
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Snakeskin Shamisen (Paperback)
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From Summer of the Big Bachi to Gasa-Gasa Girl, Naomi Hirahara's acclaimed novels have featured one of mystery fiction's most unique heroes: Mas Arai, a curmudgeonly L.A. gardener, Hiroshima survivor, and inveterate gambler.
Few things get Mas more excited than gambling, so when he hears about a $500,000 win from a novelty slot machine he's torn between admiration and derision. But the stakes are quickly raised when the winner, a friend of Mas's pal G. I. Hasuike, is found stabbed to death just days later. The last thing Mas wants to do is stick his nose in someone else's business, but at G.I.'s prodding he reluctantly agrees to follow the trail of a battered snakeskin shamisen (a traditional Okinawan musical instrument) left at the scene of the crime and suddenly finds himself caught up in a dark mystery that reaches from the islands of Okinawa to the streets of L.A. a world of heartbreaking memories, deception, and murder.
About the Author
Naomi Hirahara is a writer and editor of nonfiction and fiction books on the Japanese American experience. She authored the biography An American Son: The Story of George Aratani, Founder of Mikasa and Kenwood for the Japanese American National Museum. She is a former editor of The Rafu Shimpo, a Japanese American daily newspaper in Los Angeles.
Praise For…
"Highly enjoyable.... Hirahara's sharp ear for dialogue and keen sense of place mark this as a superior read, but it's her intimate view of the Japanese-American community and her wry portrait of the endearing Mas, with his fondness for gambling and Spam, that really make this series stand out."—Publishers Weekly


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Style Watch PollIs This Look a Hit or Miss?
Check out recent style triumphs and trip–ups by the stars – then rate the looks yourself! By Melissa Liebling-Goldberg
Credit: Gary Gershoff/WireImage
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I have read in previous posts that Bob's IGA sells local shrimp. Do they steam it for you?
I would pick it up in Savannah but you might have good luck with Bowie. I would go to Russo's in town. I don't know about Bob's. Good luck.
Bowie Seafood
801 1st Ave, Tybee Island, GA 31328
(912) 786-8211 ()
Not sure what Bob's IGA is but on Tybee the IGA has uncooked, no heads local shrimp for $5.99 a lb. we eat them all the time.
Maybe the IGA is not named Bobs? I knew about the shrimp at the Tybee IGA, but I was wondering if they would steam it for you since we will be in a hotel room, not a condo with a kitchen. Much cheaper, which means we can eat more!! Also, while I am asking, where on the island is the best value/flavor for oysters on the half shell. I am ashamed to admit my vacations are food driven....
I know people says it's for tourists, but Uncle Bubba's has great oysters on the half shell.
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GALLOWAY TOWNSHIP — Council unanimously passed a resolution Tuesday evening to implement a short, government-approved prayer at the start of its regular meetings.
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text:
Originally posted on Bush League Chronicle | Last updated 11/20/13
James Harden may be facing a legal battle soon after a TMZ report claims that he allegedly punched a Lakers fan in the face.The incident occurred outside of a night club in Los Angeles earlier this month.More on the story from TMZ:According to the lawsuit, Harden was on his way out of Greystone Manor nightclub in West Hollywood November 3rd -- riding in the back seat of some SUV -- when he rolled the window down to greet fans.That's when a man named Barak Golan says he shouted at Harden, "Kobe owns your ass!" and Harden allegedly socked him in the face.But Harden wasn't done ... Barak says the Rockets guard flipped him off as his SUV sped away.Barak is now suing for assault and battery, demanding unspecified damages. Harden's reps had no comment.In all honesty, part of the blame for this situation should fall on the fan, who was basically asking for it after shouting the vulgar insult in Harden's face. However, it definitely doesn't give Harden the right to resort to physical confrontation.Being that Harden has become one of the faces of the NBA, the league won't be happy about one of its stars being connected to a story like this. Whether the lawsuit moves forward or not, Harden has already suffered some negative publicity because of it, which is a shame because he has been playing so well on the court lately. Entering Wednesday, Harden led the team in points (24.3) and assists (5.2), while guiding the Rockets to three straight wins.Via Bleacher Report
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For those interested in entertaining films, especially those evoking youthful themes and '80s nostalgia, it's not too late to catch Take Me Home Tonight. The comedy will be hitting Blu-ray and DVD on July 19th.
Take Me Home Tonight Synopsis
As the summer of 1988 winds down, three friends on the verge of adulthood attend an out-of-control party in celebration of their last night of unbridled youth. Starring Topher Grace, Anna Faris, Dan Fogler and Teresa Palmer, Take Me Home Tonight is a raunchy, romantic and ultimately touching blast from the past set to an awesome soundtrack of timeless rock and hip-hop hits.
Recent MIT grad Matt Franklin (Topher Grace) should be working for a Fortune 500 company and starting his upward climb to full-fledged yuppie-hood. Instead, the directionless 23-year-old confounds family and friends by taking a part-time job behind the counter of a video store at the Sherman Oaks Galleria.
But Matt's silent protest against maturity comes to a screeching halt once his unrequited high school crush, Tori Frederking (Teresa Palmer), walks into the store. When she invites him to an epic, end-of-summer party, Matt thinks he finally might have a chance with the girl of his dreams. With his cynical twin sister Wendy (Anna Faris) and best friend Barry (Dan Fogler), Matt embarks on a once-in-a-lifetime evening. From stealing a car to a marriage proposal to an indescribable, no-holds-barred dance-off, these friends share experiences that will change the course of their lives on one unforgettable night in the Go-Go '80s.


text:
|Publication number
|Publication type
|Application number
|Publication date
|May 19, 2009
|Filing date
|Sep 11, 2003
|Priority date
|Nov 23, 2002
|Fee status
|Also published as
|Publication number
|Min-ho Kim, Jae-Hong Park, Jung-Wha Chung
|Original Assignee
|Samsung Electronics Co., Ltd.
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (11), Classifications (12), Legal Events (2)
|External Links: USPTO, USPTO Assignment, Espacenet
This application claims the priority of Korean Patent Application No. 2002-73325 filed 23 Nov. 2002, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
1. Field of the Invention
The present invention relates to a channel equalizing method and channel equalizer in a digital communication system.
2. Description of the Related Art
Channel equalization is a signal processing technique typically used in a digital communication system. Channel equalization is typically performed in a digital communication system in order to prevent the occurrence of channel noise, channel distortion, multi-path error and multi-user interference, thereby improving system performance. Channel equalizers may typically be found in household appliances such as digital TVs and personal communication systems. The use of a variety of different types of channel equalizers in household appliances such as described above may increase a carrier interference to noise ratio, known as a signal-to-noise ratio (SNR) and reduce a symbol error rate (SER) of an input signal.
The Advanced Television Systems Committee (ATSC) provides standards for digital high-definition television (HDTV). The ATSC document A53, dated Sep. 16, 1995 describes an approved standard for digital TV. This standard specifies specific training sequences that are incorporated into video signals transmitted over a terrestrial broadcast, cable and/or satellite channel, etc.
ATSC document A54, dated Oct. 4, 1995, describes general implementation of this standard. ATSC document A54 discloses a method of adapting on equalizer's filter response of an equalizer to adequately compensate for channel distortion. This method may be disadvantageous, however, in that there is a higher probability that coefficients which are set in the equalizer are not set so as to adequately compensate for channel distortion which may be present as the equalizer first operates (i.e., upon start-up or initialization of the equalizer).
To force a convergence of the equalizer coefficients, a well-known 'original training sequence' is transmitted. An error signal is formed by subtracting a locally generated copy of the training sequence from the output of the equalizer. The coefficients are set so as to minimize the error signal. After adaptation of the equalizer with the training signal, the equalizer may be used for filtering a video signal, for example.
In general, linear filters are used for channel equalization. Feedback-type non-linear filters are also commonly used in order to effectively remove impulse noise and non-linear distortion present in a communication channel, so as to improve equalizer performance. Further, a least mean square algorithm, which has a simple structure and requires a small amount of calculation, may be used as a 'tap coefficient updating algorithm' in the equalizer. However, coefficients typically converge slowly when using the least mean square algorithm, which means the convergence time increases. Thus, this algorithm is typically unsuitable for a multi-path communication environment, in which the speed of data transmissions, and transmission delays, are increased. Accordingly, an equalizer is required which is capable of converging coefficients as fast as possible, during a short duration such as a period of a training signal, for example.
A 'Kalman algorithm' is one of a group of algorithms having fast converging characteristics. However, the Kalman algorithm requires a substantial amount of calculation, thus there are difficulties in applying this algorithm to a communication system. Although substantial advances in hardware have enabled the use of the Kalman algorithm in digital communication systems, the increased processing power needed for these substantial calculations is a problem to be addressed.
Exemplary embodiments are directed to a method and apparatus for performing channel equalization in a communication system. A filtering circuit filters a received data sequence as a plurality of data values to be stored in a plurality of filter cells. Each filter cell may store at least one data value and may contain a coefficient related to the stored data value. A coefficient updating circuit may update the coefficients based on at least one parameter, and may compare the updated coefficients to a threshold. Based on the comparison, filter cells of selected coefficients may be selected for restoring the received data sequence to its original state.
The above and other aspects and advantages of the present invention will become more apparent by describing, in detail, exemplary embodiments thereof with reference to the attached drawings, in which:
The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. However, exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. The same reference numerals represent the same elements throughout the drawings.
To provide a context for understanding a method and apparatus for performing channel equalization according to the exemplary embodiments of the present invention, a method of realizing a filter cell (or tap) of a filter using the Kalman algorithm is briefly described.
A data signal D(t) received at an instant of time t (i.e., at time t) can be expressed by Expression (1):
D(t)=[D 1(t), D 2(t), . . . , D N(t)]T. (1)
In Expression (1), T denotes a transpose matrix. The received data signal D(t) is a signal that is distorted when passing through a multi-path environment which causes interference between signals and multi-path distortion. In a digital communication system such as a DTV, for example, a channel equalizer receives data through a channel, compares the received data with a training signal, determines the characteristics of the channel based on the comparison result, and restores the received data to its original data.
At time t, a filter cell coefficient vector C(t), which is known as a tap coefficient or a coefficient for the equalizer, may be expressed by Expression (2):
C(t)=C(t−1)+K(t)�e(t). (2)
In Expression (2), e(t) denotes a difference between a signal output from the channel equalizer and a training signal that is known to a receiving side (or the channel equalizer), at time t, and K(t) denotes a Kalman gain that is expressed by Expression (3):
K(t)=[λ−1 �P(t−1)�D(t)]/[1+λ−1 �D(t)T �P(t−1)�D(t)]. (3)
In Expression (3), 0.9<λ<1, and P(t−1) denotes an error covariance matrix. The error covariance matrix P(t) is expressed by Expression (4):
P(t)=λ�P(t−1)−λ�K(t)�D(t)T �P(t−1). (4)
A coefficient for a filter cell (or tap) may be updated using the Kalman algorithm, as shown by the following equations of Expression (5):
P(t)=C�(N�N)−C�(N�1)�(1�N)�(N�N). (5)
In Expression (5), C denotes a constant, N denotes the sum of the number of feedforward filter cells and the number of feedback filter cells, and (N�N) denotes a matrix consisting of N columns of the sum and N rows of the sum.
Expression (5) reveals that the amount of calculation by a filter using the Kalman algorithm increases when calculating (N�N) and (N�1)�(1�N). The amount of calculation by the filter using the Kalman algorithm may be expressed as 0 (N2).
Respective received input data sets Di (i is a natural number) may contain respective training sequences TSi and data sequences DSi. The coefficient updating circuit 300 equalizes the received training sequences TSi and updates a given coefficient from the plurality of adjustable coefficients.
Filtering circuit 200 thus contains a plurality of filter cells having adjustable coefficients. Coefficient updating circuit 300 derives an optimum value for at least one coefficient for each filter cell. This may be done using an already-known training sequence and a received training sequence (TSi) transmitted in association with the data sequence (DSi) that is currently being filtered. Thus, channel equalizer 100 may update a corresponding coefficient based on a number of parameters, The parameters may include the obtained optimum value, a Kalman gain, and a difference between the known training sequence and the transmitted training sequence. The channel equalizer 100 compares the updated coefficient with a given (or specified) threshold value, and may reduce the number of filter cells having a coefficient requiring an update, based on the comparison result.
The value of the coefficient may be updated (function 430) based on at least one of the plurality of parameters. The parameters, as discussed above, may include the derived optimum value, a Kalman gain and a difference between the transmitted training signal and the training signal which is already known to the receiving side.
The updated coefficient may be compared (function 440) with a given threshold value, and filter cells (or tabs) to be updated may be selected based on the comparison result. For example, filter cells having coefficients less than the threshold value may be set to zero. Those filter cell equal to or exceeding the threshold may thus be selected, thereby potentially reducing the number of filter cells that need to be updated. After the selected coefficient are updated, a new data sequence is filtered.
As shown in
Each data registers 230 1 through 230 m stores a current data value for a data sequence that is related to each coefficient CK. Similarly, each coefficient register 240 1 through 240 m and each coefficient register 270 1 through 270 n stores current values of CK. Each data register 260 1 through 260 n stores a data value for a feedback data sequence currently related to the CK. A training sequence TSi may be stored in a training sequence memory 350. The training sequence TSi may be composed of m continuous data having values Ti(1), Ti(2), . . . , Ti(m), for example.
When a data sequence DSi is transmitted to the filtering circuit 200, the filtering circuit 200 receives values DSi(t) of a data sequence DSi at a time t. That is, the data sequence DSi is transmitted to the filtering circuit 200, and the data sequence values DSi(t) are stored in the filter cells 210 i through 210 m and the filter cells 220 i through 220 n . At time t, the data sequence value DSi(t) is transmitted to filtering circuit 200 and stored in data register 230 1 of the first filter cell 210 1.
At time t+1, the data sequence value DSi(t) is transmitted to the data register (not shown) of the second filter cell 210 2 from the data register 230 1 of the first filter cell 210 1. During the transmission of the data sequence value DSi(t), a next data sequence value DSi(t+1) is also transmitted to the filtering circuit 200, received by the filtering circuit 200 and stored in the data register 230 1 of the first filter cell 210 1.
At time t+2, the data sequence value DSi(t) is transmitted to the data register (not shown) of the third filter cell 210 3 from the data register of the second filter cell 210 2, and the data sequence value DSi(t+1) is transmitted to the data register of the second filter cell 210 2 from the data register 230 1 of the first filter cell 210 1. At the same time, a next data sequence value DSi(t+2) is transmitted to the filtering circuit 200 and stored in the data register 230 1 of the first filter cell 210 1.
At time t, each of the multipliers 250 1 through 250 m, of the respective filter cells 210 1 through 210 m, receives a value of a coefficient CK stored in the corresponding coefficient register 240 1 through 240 m, and receives a data value stored in the corresponding data register 230 1 through 230 m. Also, each of the multipliers 280 1 through 280 n, of the respective filter cells 220 1 through 220 n, receives a value of a coefficient CK stored in the corresponding coefficient register 270 1 through 270 n, and receives a data value stored in the corresponding data register 260 1 through 260 n. Each of the multipliers 250 1 through 250 m and the multipliers 280 1 through 280 n multiplies the received two values and provides the multiplication result to the adder 290.
The adder 290 calculates a difference Zout between the sum of the multiplication results received from the multipliers 250 1 through 250 m, and the sum of the multiplication results received from the multipliers 280 1 to 280 n, and outputs the Zout to a digital signal processor (DSP) 370.
In coefficient updating circuit 300, a coefficient memory 310 stores the coefficients CK for the filter cells 210 1 through 210 m, and 220 1 through 220 n. A Kalman gain memory 320 stores a Kalman gain (or vector) K(t). An error covariance memory 330 stores an error covariance matrix P(t); and a data memory 340 stores received values of the training sequence TSi. The original training sequence, discussed previously above, is stored in a training sequence memory 350.
A comparator 360 receives signals output from the coefficient memory 310, compares these signals with a given threshold value in response to a given (or specified) control command, and sets values for the output signals (corresponding to CKs) to zero when these signals are less than the threshold value.
The DSP 370 receives signals output from comparator 360, Kalman gain memory 320, error covariance memory 330, data memory 340, training sequence memory 350, and adder 290. The DSP 370 processes a received training sequence TSi, calculates the optimum value of a particular one of coefficients CK for filter cells, and outputs the calculation result to a decision feedback equalizer (DFE) input data memory 380. The DFE input data memory 380 receives signal (Xout)′ from the DSP 370 and outputs output signal Xout to the data registers 260 1 through 260 n of the filter cells 220 1 through 220 n.
The DSP 370 performs an equalization of the training sequence TSi. During the equalization of the training sequence TSi, the DSP 370 also rearranges the coefficients CK and allocates a Kalman gain value, an error covariance value, a data value, and a training sequence value for each coefficient, in order to equalize all CKs except for the CKs set to zero by comparator 360.
The equalization of the received training sequence TSi includes filtering the received training sequence TSi by the DSP 370, based on the values of the coefficients CK stored in the coefficient memory 310. During the filtering of the training sequence TSi, the stored CKs are repeatedly adjusted by DSP 370, so that the received training sequence TSi emulates the original training sequence after equalization. As discussed above, the original training sequence is stored in training sequence memory 350. As previously discussed, the optimum values for CK represent adjusted values for the CKs that can be retrieved from coefficient memory 310 at the end of the equalization process.
A controller 385 maintains the number of filter cells (count of sum of feedforward and feedback filters) as an initial value and controls the comparator 360 at an instant of time when comparator 360 starts to operate. As the comparator 360 starts to operate, and during a training period, the controller 385 calculates identification numbers of the filter cells stored in a tap address memory 383, estimates the delay time of a delayed multi-path of a channel, and operates the comparator 360 again after an interval corresponding to the estimated time.
The comparator 360 receives the coefficient values of the filter cells output from coefficient memory 310, compares the received coefficient values of the filter cells with a given threshold value, selects certain coefficient values for comparing and updating, and sets the selected coefficients which are less than the threshold to zero. Then, comparator 360 stores identification numbers of the selected filter cells having the coefficient values which are not set to 0 (i.e., greater than or equal to the threshold value) in a tap allocation memory 381, and stores the coefficient values corresponding to the numbers of the filter cells in a coefficient allocation memory 387.
The numbers of the filter cells are stored in a tap address memory 383, so as to correspond to the initially allocated numbers (initial count) of the filter cells. The numbers of the filter cells stored in tap allocation memory 381 are input to a Kalman gain memory 320, an error covariance memory 330, and data memory 340.
The Kalman gain memory 320 applies the input numbers of the filter cells to the Kalman gain vector stored in the Kalman gain memory 320, so as to generate a new Kalman gain vector. The error covariance memory 330 generates a new matrix using the numbers of the filter cells received from the tap allocation memory 381, as to be described in further detail below. As a result, a new coefficient vector consisting only of the coefficients passing through comparator 360 is generated.
A Kalman gain calculator 325 calculates a Kalman gain to update the current Kalman gain, using a Kalman gain vector output from Kalman gain memory 320, an error covariance matrix output from error covariance memory 330, a data vector received from the data memory 340 at time t, and a value λ (0.9<λ<1). The Kalman gain calculator 325 stores the updated Kalman gain in Kalman gain memory 320.
An error covariance calculator 335 updates the error covariance matrix based on the error covariance matrix output from the error covariance memory 330, the updated Kalman gain vector output from the Kalman gain calculator 325, the data vector received from the data memory 340 at time t, and the value λ (0.9<λ<1). The error covariance calculator 335 stores the updated error covariance matrix in error covariance memory 330.
A multiplexer 397 receives a training sequence from the training sequence memory 350 at time t (during a training period), and inputs the training sequence to an error calculator 393 and the DFE input data memory 380. After the training period, the multiplexer 397 receives Zout passing through the slicer 395, and provides Zout to error calculator 393 and DFE input data memory 380.
The error calculator 393 calculates a difference, e(t), between the output of the multiplexer 397 and the output of adder 290, and transmits the difference e(t) to a multiplier 391. The slicer 395 changes the output of the adder 290 into a value approximately equal to the original transmission signal. The DEE input data memory 380 receives the output of the multiplexer 397 and provides it to data registers 260 1 through 260 n of corresponding filter cells 220 1 through 220 n, for example.
A multiplier 391 multiplies the difference e(t) output from the error calculator 393 and an output of the Kalman gain calculator 325 and sends the multiplication result to an adder 389. The adder 389 adds the multiplication result output from the multiplier 391 to a new coefficient vector stored in the coefficient allocation memory 387, and outputs the addition result to the coefficient memory 310. In this case, the coefficient memory 310 receives a signal output from the adder 389, updates the coefficient vector using the signal, and stores the updated coefficient vector. In accordance with the exemplary embodiments, modified Kalman algorithms may be used to minimize the values of error signals when updating coefficients.
Accordingly, coefficient updating circuit 300 is designed to provide a number of a filter cell, which passes through comparator 360 and is input to tap allocation memory 381, to Kalman gain memory 320 and to error covariance memory 330. Coefficient updating circuit 300 may also update a Kalman gain and an error covariance matrix. Therefore, a channel equalizer according to the exemplary embodiments of the present invention may use only small filter cells to calculate a Kalman gain and an error covariance matrix, thereby potentially reducing power consumption.
Additionally, tap allocation memory 381 is capable of generating a new coefficient vector using only necessary filter cells, and may thus effectively update only a distorted portion of a channel which is adversely affecting the performance of the original signal. For this reason, the method and apparatus for forming channel equalization according to the exemplary embodiments of the present invention may be more advantageous than a conventional channel equalizing method of updating coefficients using all filter cells.
Modified Kalman Algorithms
Assuming that a channel equalizer according to the exemplary embodiments of the present invention uses ten filter cells, a filter cell coefficient vector C(t)=[10�1] at time t may be calculated by the following Expression (6):
C(t)=[C1, C2, C3, C4, C5, C6, C7, C8, C9, C10]T. (6)
A Kalman gain K(t)=[10�1] can be expressed by Expression (7):
K(t)=[K1, K2, K3, K4, K5, K6, K7, K8, K9, K10]T. (7)
An error covariance matrix P(t)=[10�10] can be expressed by Expression (8):
Also, data D(t)=[10�1] can be expressed by Expression (9):
D(t)=[D1, D2, D3, D4, D5, D6, D7, D8, D9, D10]T (9)
If initial conditions under which the comparator 360 operates are satisfied, and a coefficient vector C(t)=[10�1], which passes through the comparator 360, is equivalent to a value obtained by Expression (10), the numbers of filter cells (or a memory address) having values other than zero, e.g., 1, 2, 7, and 10, may be input to the tap allocation memory 381, and a new filter cell coefficient vector Cn(t)=[4�1], which can be expressed by Expression (11), may be stored in coefficient allocation memory 310.
C(t)=[C1, C2, 0, 0, 0, 0, C7, 0, 0, C10]T (10)
C n(t)=[C1, C2,C7, C10]T (11)
A Kalman gain Kn(t)=[4�1], which is generated in response to an address output from the tap allocation memory 381, can be expressed by Expression (12) as follows:
K n(t)=[K1, K2, K7, K10]T. (12)
An error covariance matrix Pn(t)=[4�4], which is generated in response to the address output from the tap allocation memory 381, can be expressed by Expression (13) as follows:
In this case, data signal D(t)=[4�1] can be described by Expression (14):
D(t)=[D1, D2, D7, D10]T. (14)
During a training period, the delay time of a multi-path can be estimated with reference to a value stored in the tap allocation memory 381, and it is possible to continuously reduce the number of filter cells to be updated by operating the comparator 360 again, after a lapse of time corresponding to the delay time of the multipath. In this way, the amount of calculation spent on updating coefficients may be reduced, thereby potentially reducing total power consumption.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the exemplary embodiments of the present invention as defined by the following claims.
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|Zenith Eletronics Corporation
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|Daewoo Electronics Co., Ltd.
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|Thomson Multimedia S.A.
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|Nec Corporation
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|May 13, 2003
|General Instruments Corporation
|Method and apparatus for adaptive equalization in the presence of large multipath echoes
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|Koninklijke Philips Electronics N.V.
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|Title not available
|U.S. Classification
|375/229, 375/232, 708/322
|International Classification
|Cooperative Classification
|European Classification
|Sep 11, 2003
Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, MIN-HO;PARK, JAE-HONG;CHUNG, JONG-WHA;REEL/FRAME:014497/0237;SIGNING DATES FROM 20030805 TO 20030812
|Oct 25, 2012
|Fee payment
Year of fee payment: 4


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