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- Rescorla-Wagner model
The Rescorla-Wagner model is a model of
classical conditioningin which the animal is theorized to learn from the discrepancy between what is expected to happen and what actually happens. This is a trial-level model in which each stimulus is either present or not present at some point in the trial. The prediction of the unconditioned stimulusfor a trial can be represented as the sum of all the associative strengths for the conditioned stimuli present during the trial. This is the feature of the model that represents a major advance over previous models, and allowed a straightforward explanation of important experimental phenomena such as blocking. For this reason, the Rescorla-Wagner model has become one of the most influential models of learning, though it has been frequently criticized since its publication. It has attracted considerable attention in recent years, as many studies have suggested that the phasic activity of dopamine neurons in mesostriatal DA projections in the midbrain encodes for the type of prediction error detailed in the model.
The Rescorla-Wagner model was created by
Robert A. Rescorlaof the University of Pennsylvaniaand Allan R. Wagnerof Yale University.
uccess and popularity
The Rescorla-Wagner model has been successful and popular because [cite journal
last1 = Miller | first1 = Ralph R.
last2 = Barnet | first2 = Robert C.
last3 = Grahame | first3 = Nicholas J.
authorlink =
coauthors =
title = Assessment of the Rescorla-Wagner Model
journal = Psychological Bulletin
volume = 117
issue = 3
pages = 363–386
publisher = American Psychological Association
location =
date = 1995
doi = 10.1037/0033-2909.117.3.363
author = Miller, Ralph R.] :
#it can generate clear and ordinal predictions
#it has a number of successful predictions
#processing event representation by intensity and unexpectedness has an intuitive appeal
#it provides considerable heuristic value
#of its relatively few free parameters and independent variables
#it has had little competition from other theories
Basic assumptions of the model
#The amount of surprise an organism is assumed to experience when encountering an
Unconditioned Stimulus(US) is assumed to be dependent on the summed associative value of all cues present during that trial. This assumption differs from previous models which considered only the associative value of a particular Conditioned Stimulus(CS) to be the determining aspect of surprise.
Excitationand inhibitionare opposite features. One stimulus can only have a positive associative strength (being a conditioned excitor) or a negative associative strength (being a conditioned inhibitor) it cannot have both.
#The associative strength of a
stimulusis expressed directly in the behaviour it elicits/inhibits. There is no way of learningabout a stimulus and not showing what was learned in the organism's reactions.
salienceof a CS is a constant. The salience of a CS (alpha) is not supposed to undergo any changes during training and can thus be represented by a constant.
#The history of a cue does not have any effects on its current state. It is only the current associative value of a cue which determines the amount of learning. It does not matter whether the CS may have undergone several conditioning-extinction sessions or the like.
The first two assumptions are unique to the Rescorla-Wagner model. The last three assumptions where present in antecedents of the model and are less central to the theory but still important to the structure of the model. [cite journal
last1 = Miller | first1 = Ralph R.
last2 = Barnet | first2 = Robert C.
last3 = Grahame | first3 = Nicholas J.
authorlink =
coauthors =
title = Assessment of the Rescorla-Wagner Model
journal = Psychological Bulletin
volume = 117
issue = 3
pages = 363–386
publisher = American Psychological Association
location =
date = 1995
doi = 10.1037/0033-2909.117.3.363
author = Miller, Ralph R.]
* is the change in the strength of association of X
* is the salience of the CS (bounded by 0 and 1)
* is the rate parameter for the US (bounded by 0 and 1)
* is the maximum conditioning possible for the US
* is the current associative strength
* is the total associative strength of all CS
The Revised RW model by Van Hamme and Wassermann (1994)
Van Hamme and Wassermann have extended the original Rescorla-Wagner (RW) model and introduced a new factor in their revised RW model in 1994 [Van Hamme, L.J., & Wasserman, E.A. (1994). Cue competition in causality judgements: The role of nonpresentation of compound stimulus elements. Learning and Motivation, 25, 127–151.] : They suggested that not only conditioned stimuli physically present on a given trial can undergo changes in their associative strength, the associative value of a CS can also be altered by a within-compound-association with a CS present on that trial. A within-compound-association is established if two CSs are presented together during training (compound stimulus). If one of the two component CSs is subsequently presented alone, then it is assumed to activate a representation of the other (previously paired) CS as well. Van Hamme and Wassermann propose that stimuli indirectly activated through within-compound-associations have a negative learning parameter--thus phenomena of retrospective reevaluation can be explained.
Let's consider the following example, an experimental paradigm called `backward blocking´, indicative of retrospective revaluation, where AB is the compound stimulus A+B:
Phase 1: AB-US
Phase 2: A-US
Test trials: Group 1, which received both Phase 1- and 2-trials, elicits a weaker Conditioned Response (CR) compared to the Control group, which only received Phase 1-trials.
The original RW model cannot account for this effect. But the revised model can: In phase 2, stimulus B is indirectly activated through within-compound-association with A. But instead of a positive learning parameter (usually called alpha) when physically present, during Phase 2, B has a negative learning parameter. Thus during the second phase, B's associative strength declines whereas A's value increases because of its positive learning parameter.
Thus, the revised RW model can explain why the CR elicited by B after backward blocking training is weaker compared with AB-only conditioning.
Some failures of the RW Model
;spontaneous recovery from
extinctionand recovery from extinction caused by reminder treatments (reinstatement): It is a well established observation that a time-out interval after completion of extinction results in partial recovery from extinction, i.e. the previously extinguished reaction or response recurs - but usually at a lower level than before extinction training. Reinstatement refers to the phenomenon that exposure to the US from training alone after completion of extinction results in partial recovery from extinction. The RW model can't account for those phenomena.
;extinction of a previously conditioned inhibitor: The RW model predicts that repeated presentation of a conditioned inhibitor alone (a CS with negative associative strength) results in extinction of this stimulus (a decline of its negative associative value). This is a false prediction. Contrarily, experiments show the repeated presentation of a conditioned inhibitor alone even increases its inhibitory potential.
reacquisitionafter extinction: One of the assumptions of the model is that the history of conditioning of a CS does not have any influences on its present status - only its current associative value is important. Contrary to this assumption, many experiments show that stimuli that were first conditioned and then extinguished are more easily reconditioned (i.e. fewer trial are necessary for conditioning).
;the exclusiveness of excitation and inhibition: The RW model also assumes that
excitationand inhibitionare opponent features. A stimulus can either have excitatory potential (a positive associative strength) or inhibitory potential (a negative associative strength). By contrast it is sometimes observed, that stimuli can have both qualities. One example is backward excitatory conditioning in which a CS is backwardly paired with the US (US-CS instead of CS-US). This usually makes the CS become a conditioned exctitor. But interestingly, the stimulus also has inhibitory features which can be proven by the retardation of acquisition test. This test is used to assess the inhibitory potential of a stimulus since it is observed that excitatory conditioning with a previously conditioned inhibitor is retarded. The backwardly conditioned stimulus passes this test and thus seems to have both excitatory and inhibitory features.
;pairing a novel stimulus with a conditioned inhibitor: A conditioned inhibitor is assumed to have a negative associative value. By presenting an inhibitor with a novel stimulus (i.e. its associative strength is zero), the model predicts that the novel cue should become a conditioned excitor. This is not the case in experimental situations. The predictions of the model stem from its basic term (lambda-V). Since the summed associative strength of all stimuli (V) present on the trial is negative (zero + inhibitory potential) and lambda is zero (no US present), the resulting change in the associative strength is positive, thus making the novel cue a conditioned excitor.
;CS-preexposure effect: The CS-
preexposureeffect (also called latent inhibition) is the well established observation that conditioning after exposure to the stimulus later used as the CS in conditioning is retarded. The RW model doesn't predict any effect of presenting a novel stimulus without a US.
;higher-order conditioning: In
higher order conditioninga previously conditioned CS is paired with a novel cue (i.e. first CS1-US then CS2-CS1). This usually makes the novel cue CS2 eliciting similar reactions like the CS1. The model cannot account for this phenomenon since during CS2-CS1 trials, no US is present. But by allowing CS1 acting similarly like a US, one can reconcile the model with this effect.
;sensory preconditioning:
Sensory preconditioningrefers to first pairing two novel cues (CS1-CS2) and then pairing one of them with an US (CS2-US). This turns both CS1 and CS2 in conditioned excitors. The RW model cannot explain this, since during the CS1-CS2-phase both stimuli have an associative value of zero and lambda is also zero (no US present) which results in no change in the associative strength of the stimuli.
* Rescorla, R. A., and Wagner, A. R. (1972) "A theory of Pavlovian conditioning: Variations in the effectiveness of reinforcement and nonreinforcement", Classical Conditioning II, A. H. Black and W. F. Prokasy, Eds., pp. 64-99. Appleton-Century-Crofts.
* Miller, R. R., Barnet, R. C., and Grahame, N. J. (1995) "Assessment of the Rescorla-Wagner model", Psychological Bulletin, 117, pp. 363-386.
* Van Hamme, L. J., & Wasserman, E. A. (1994) "Cue competition in causality judgments: The role of nonrepresentation of compound stimulus elements", Learning and motivation, 25, pp. 127-151.
External links
[http://www.scholarpedia.org/article/Rescorla-Wagner_Model Scholarpedia Rescorla Wagner model]
Wikimedia Foundation. 2010.


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Blue Care Network HMO
At Blue Care Network, we provide coverage that helps you easily find health care when you're sick or injured. You can find information about how an HMO works and the quality health care benefits we provide in the articles below. You can also find out more about Blue Care Network in the About Us section.
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How to use my benefits
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My drug benefit
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If you have prescription drug coverage through Blue Care Network, we help you to easily figure out your benefits.
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Learn more about our prescription drug policies and what steps you can take to get coverage.
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Find out if your Blue Cross Blue Shield of Michigan or Blue Care Network plan covers your prescription drug.
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Learn about prior authorization, how to find out if a drug is billed as a medical or pharmacy benefit, and how to request a review for coverage of a drug that isn't included in your plan.
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subset: commoncrawl


text:
We're 18 days late on our New Year's Resolution to launch a blog, but we finally have lift-off. If reinventing the wheel is your thing, then stop reading now. This blog is dedicated to saving folks some time if there is a topic we happen to know a little about. The word 'little' is used advisedly. It emphasizes that the discussion of issues and topics here is intended to serve as a starting point for anyone interested in pursuing a particular technology. Where appropriate, additional references will be provided to assist interested users in delving more deeply into a particular subject. Our special thanks for WordPress, the premier blogging tool, which makes this all so easy. If you're reading this on an iPad, lucky you! Just double-tap in the body of any article to see Nerd Vittles in its fully glory. We'll try to keep things interesting as we move forward. Hope you enjoy the show!
Welcome to Ward Mundy's Technology Blog aka Nerd Vittles
This article has 14 comments
Can you push Asteridex to dial highlighted phone numbers? Also, what about a quick import script for Outlook to Astridex?
[WM: Good ideas. I'll have a look.]
Hi Ward,
nice looking site, lots of info etc. Please tell me which was the default wordpress theme I saw when I first entered the site? Now I've changed I cant find the original one, many of the others dont format correctly with your google ad blocks etc.
[WM: Rubric is the default style. You can read all about using WordPress site styles in our article on the subject.]
Wow. Your tutorials on asterisk are wonderful! Thank you. I've seen a small amount of information on call queue statistics but the installation of it is a bit overwhelming? Any primers on this forthcoming?!?!?
Hey Ward – awesome site, it has been very helpful.
I think your next "how to" article would be pairing multiple PBX systems together. I.e. having a PBX system at 2 offices paired together to share 1 voicemail, 1 set of extensions, etc with centralized management or have 2 systems paired at one location in order to handle a multiple sets of POTS or PRI lines..
I haven't seen a "soup-to-nuts" guide for that type of setup.
[WM: I'm chompin' at the bit to do just that. Looks like we've got a couple of new versions of Asterisk and Asterisk@Home in the pipeline. After that, it's #1 on my list.]
Thank you for such a usefull site. I'm trying to get a multi-line phone system to ring an extension even when it's busy. Ideally I'd like a call to go to voice mail only when DND is on or there was no answer. I think I found where the settings need to be placed, but I don't have any idea how to set it. Any help would be greatly appreciated.
Thank you very much for your tuturials! You've saved me a ton of time in implementing ideas I've had for a while but never found time to figure out. I'm using regular asterisk without AMP, but most of your examples still apply.
I have a Nextel phone with Free Incoming, so I implemented the Ringy-Dingy-thingy on my server and can now make tons of calls using my cell at no charge, even during peak hours.
One suggestion you can add if you like, you can use CallerID matching on an existing DID rather than needing a separate one. Since I only want it to work from a few phones, I match CID in the dialplan. From that point, since it calls back, security is very tight as the attacker would need to be not only able to spoof CID, but be able to capture the return call as well. If you'd like me to provide a code sample, let me know.
I also wanted to comment to you regarding your 52 free countries service you plan to announce tomorrow. If it is using one of the Finarea companies, watch out. They are a bait-and-switch scam. They lure you in to pay for credit by offering all these free calls, then slowly remove free destinations. The US is always one of the first to go. If you aren't talking about one of them, then great! If so, just be careful and consider yourself warned by someone who has already fallen for it once.
Have a great evening and thanks again for the great site!
Ward, I came accross a couple of commands that should be useful for refreshing a dynamic IP address instead of that cron job 🙂
externhost = hostname.tld : (new in Asterisk 1.2.x)
externrefresh = xxx : Specify how often a hostname DNS lookup should be performed for the value entered in 'externhost' (new in Asterisk 1.2.x)
Hi Ward,
I am the author of the Complete Trixbox v1.1 Setup Guide for Small Business. Thank you for featuring my article on your site.
Just wanted to let you know that I just re-vamped the setup guide for Trixbox v1.2, and all of the little goodies that come with. Here is the updated link:
Thanks again!
-Chris Sherwood
SureTeq, Inc.
"wow,,., this is great stuff ! Thank You
From one nerd to another.. Thanks a bunch!!! You made setting up my Trixbox for my company fun!
Hi Ward,
I love your web site, and have been following it for at least 5 years. Here's an idea for a future column that I'd find useful. I use PBXinAFlash at my house, and previously had used a cordless phone with an ATA adapter. Over time we've lost all our cordless phones, or they have broken. I'd like to buy a new set, but we need at least six handsets.
I've thought of buying a bunch of wifi sip phones, but they are pricey. So basically, the column would be about what the recommended cordless phone solution is for a PIAF household or small business.
Just built a new PIAF to replace my old one that had run for years on a VM. I even found an Acer Revo to set it up on. LOVE the Google dialing! You and your crew are the best!
I never thought blogs like this would be of any help for me until I had a hard time with Asterisk! I'm going to recommend your site to my friends because I know the blog will come in handy anytime we all need a little help on troubleshooting.
Congratulations for your Job in Teleyapper is Awesome


text:
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Knight's Cabinet edition of the works of William Shakspere, Volumen 9
Dentro del libro
Página 86
... juggling fiends no more believ'd , That palter with us in a double sense ; That keep the word of promise to our ear , And break it to our hope . - I'll not fight with thee . Macd . Then yield thee , coward , And live to be the show and ...
... juggling fiends no more believ'd , That palter with us in a double sense ; That keep the word of promise to our ear , And break it to our hope . - I'll not fight with thee . Macd . Then yield thee , coward , And live to be the show and ...
Páginas seleccionadas
Otras ediciones - Ver todo
Términos y frases comunes
Achilles Act III Agam Ajax Apem Appears arms Attendants Bawd bear better blood Boult breath bring comes Cres Cressida daughter dead death deed doth doubt Enter Exeunt Exit eyes fair faith fall father fear fight Fish Flav follow fool fortune friends give gods gold gone Greek hand hast hath head hear heart heaven Hect Hector Helen hold honour I'll keep king Lady leave live look lord Macb Macbeth Macd master means meet mind nature never night noble Pain peace Pericles play Poet poor pray present prince Rosse SCENE Serv Servant sleep speak stand strange sweet sword tell thank thee Ther there's thing thou art thought Timon Troilus Trojan Troy true Ulyss Witch worthy
Pasajes populares
Página 21 - The effect and it! Come to my woman's breasts, And take my milk for gall, you murdering ministers, Wherever in your sightless substances You wait on nature's mischief! Come, thick night, And pall thee in the dunnest smoke of hell, That my keen knife see not the wound it makes, Nor heaven peep through the blanket of the dark, To cry 'Hold, hold!
Página 31 - Methought I heard a voice cry 'Sleep no more ! Macbeth does murder sleep,' — the innocent sleep, Sleep that knits up the ravell'd sleave of care, The death of each day's life, sore labour's bath, Balm of hurt minds, great nature's second course, Chief nourisher in life's feast, — Lady M. What do you mean ? Macbeth. Still it cried 'Sleep no more !' to all the house: 'Glamis hath murder'd sleep, and therefore Cawdor Shall sleep no more ; Macbeth shall sleep no more.
Página 25 - Was the hope drunk, Wherein you dress'd yourself? hath it slept since, And wakes it now, to look so green and pale At what it did so freely? From this time Such I account thy love. Art thou afeard To be the same in thine own act and valour As thou art in desire ? Wouldst thou have that Which thou esteem'st the ornament of life, And live a coward in thine own esteem, Letting "I dare not" wait upon "I would," Like the poor cat i
Página 16 - Might yet enkindle you unto the crown, Besides the thane of Cawdor. But 'tis strange : And oftentimes, to win us to our harm, The instruments of darkness tell us truths; Win us with honest trifles, to betray us In deepest consequence— Cousins, a word, I pray you.
Página 29 - Nature seems dead, and wicked dreams abuse The curtain'd sleep ; witchcraft celebrates Pale Hecate's offerings ; and wither'd murder, Alarum'd by his sentinel, the wolf, Whose howl's his watch, thus with his stealthy pace, With Tarquin's ravishing strides, towards his design Moves like a ghost. Thou sure and firm-set earth, Hear not my steps, which way they walk, for fear Thy very stones prate of my whereabout, And take the present horror from the time, Which now suits with it.
Página 238 - Nothing but our undertakings ; when we vow to weep seas, live in fire, eat rocks, tame tigers ; thinking it harder for our mistress to devise imposition enough than for us to undergo any difficulty imposed. This is the monstruosity in love, lady, that the will is infinite, and the execution confined ; that the desire is boundless, and the act a slave to limit.
Página 25 - Like the poor cat i' the adage ?* Macb. Prithee, peace! I dare do all that may become a man; Who dares do more is none. Lady M. What beast was 't, then, That made you break this enterprise to me? When you durst do it, then you were a man; And, to be more than what you were, you would Be so much more the man.
Página 28 - Is this a dagger which I see before me, The handle toward my hand ? Come, let me clutch thee. I have thee not, and yet I see thee still. Art thou not, fatal vision, sensible To feeling as to sight ? or art thou but A dagger of the mind, a false creation, Proceeding from the heat-oppressed brain ? I see thee yet, in form as palpable As this which now I draw. Thou marshall'st me the way that I was going ; And such an instrument I was to use. Mine eyes are made the fools o...
Página 172 - Come not to me again : but say to Athens, Timon hath made his everlasting mansion Upon the beached verge of the salt flood ; Who once a day with his embossed froth The turbulent surge shall cover : thither come, And let my grave-stone be your oracle.
Página 182 - Past reason hated, as a swallow'd bait On purpose laid to make the taker mad: Mad in pursuit and in possession so; Had, having, and in quest to have, extreme; A bliss in proof, and proved, a very woe; Before a joy proposed; behind a dream. All this the world well knows; 'yet none knows well To shun the heaven that leads men to this hell. cxxx My mistress' eyes are nothing like the sun; Coral is far more red than her lips...


text:
Tweet On High-Earning Bengaluru Engineer's Loneliness Shocks Internet
A Bangalore-based software engineer's thoughts that show the negative side of high-paying corporate jobs are going viral on the internet, with many social media users connecting and agreeing with them. A note written by a 24-year-old software engineer from Bengaluru who earns ₹ 58 lakh annually demonstrates clearly that money alone can't buy happiness. Sukhada, a Twitter user, provided a screenshot of the note she discovered on Grapevine's corporate chat site with a caption that reads. Continue Reading
India News
Complaint registered against Kejriwal, Kharge over alleged inciteful remarks against President Murmu
A complaint has been filed against Delhi Chief Minister Arvind Kejriwal, Congress President Mallikarjun Kharge, and several others for allegedly making inciteful comments on President Droupadi Murmu's caste while remarking on the inauguration of the new Parliament building, news agency ANI reported. The complainant accused Kejriwal, Kharge, and others of creating enmity among communities, and distrust for the Government of India. in order to achieve their political goals. According to ANI, the complaint was filed under sections 121,153A,505, and 34 of the Indian Penal Code.Read More
Jagan Reddy Was Informed About Uncle's Death Before Public: CBI
Andhra Pradesh Chief Minister YS Jagan Mohan Reddy was informed about the death of his uncle and former minister YS Vivekananda Reddy much before the news became public, the Central Bureau of Investigation (CBI) told a court on Friday. The probe agency made the revelation in an affidavit before the Telangana High Court in response to an anticipatory bail petition filed by Kadapa MP YS Avinash Reddy, a member of the Chief Minister's party, who has been named an accused in the case. Avinash Reddy's father Bhaskar Reddy, who was arrested in connection with the case last month, was shifted to a hospital this morning.Read More
Will new Parliament building stand the 'test of democracy'?
In a democracy, the people are sovereign. But this abstract notion of popular sovereignty has a concrete manifestation. That is the Parliament of India, for it is here that, through their representatives, the citizens of India exercise their sovereignty. And with a new Parliament building on the cusp of being inaugurated, Indian citizens are about to move to a new home. Indeed, it is in Parliament, over the last seven decades, that India's citizens have expressed their political preferences. They have kept the executive in check and made it accountable through relentless questions and votes. They have framed laws. They have debated fiercely.Read More
Central government notifies appointment of Justice MS Ramachandra Rao as Chief Justice of Himachal Pradesh High Court
The Central government Friday notified the appointment of Justice MS Ramachandra Rao as the Chief Justice of Himachal Pradesh High Court. The office of the Chief Justice of Himachal Pradesh High Court has been vacant since January this year after the retirement of Chief Justice Amjad Sayed. The Supreme Court Collegium headed by CJI DY Chandrachud had recommended Justice Rao's elevation last month. It had reasoned that the Telangana High Court (Justice Rao's parent High Court), presently has no representation among Chief Justices of the High Courts.Read More
World News
Bangladeshi man held in Mumbai for trying to fly to Rome with 'Indian' passport
A 32-year-old Bangladesh national, who claimed to be a Buddhist monk, has been arrested here for trying to travel to Rome on an Indian passport that he had obtained by providing fake documents, an official said on Friday. Bipon Anil Barua, a resident of Bandarban in Bangladesh, was apprehended at Chhatrapati Shivaji Maharaj International Airport on Wednesday night, the official said. Barua was to fly to Rome via Muscat from Mumbai in the early hours of Thursday. When an immigration officer keyed in his passport details in their system, he found that a Look Out Circular (LOC) has been issued against him by the Foreigners Registration Office (FRRO), Mumbai, the official said. An LOC is a notice which prevents a person from leaving the country.Read More
FBI reveals Queen Elizabeth II assassination attempt during 1983 US tour. Man wanted to kill her because
The Federal Bureau of Investigation has released a cache of files relating to late Queen Elizabeth II's travels to the US, and threats made to her during a 1983 visit to California. According to the investigation agency, the threat was made to a police officer in San Francisco, who frequented an Irish pub in the city. The files revealed that the officer warned federal agents about a call from a man he had met at the venue, reported the BBC. The officer said the man told him he was seeking revenge for his daughter who had been killed in Northern Ireland by a rubber bullet.Read More
11-Year-Old US Boy Called 911 For Help, Shot By Cop Who Arrived
An 11-year-old boy in the Mississippi state of the United States of America was shot by police officers in his home after he called the 911 emergency telephone number for help. The injured youngster is healing from his wounds after being discharged from the hospital. The boy has been identified as Aderrien Murry, and his family is calling for the officer to be fired and charged with the shooting. Aderrien was shot in the chest by an Indianola Police Department officer early Saturday morning while the officer was responding to a domestic disturbance call at the child's home, the boy's mother, Nakala Murry, told CNNRead More
Friends shave their heads to support teen fighting cancer
In a heartwarming display of friendship, a few teens decided to shave their heads to show their support to a girl battling cancer. The incredible moment of the girl's reaction to seeing her friends was captured on camera and shared online. Since being posted, the video has melted people's hearts and left them emotional. The video is posted on the official Twitter handle of the Goodnews Movement. "NO ONE FIGHTS ALONE: Teen fighting cancer is surprised by her group of friends when they show up to her house after shaving their own heads in an act of solidarity. If you have friends, you have everything!" they wrote as they shared the video.Read More
Business News
Will send notice to WhatsApp on spam calls, says Union minister Rajeev Chandrasekhar
WhatsApp international calls scam has affected thousands of users across India. IT Minister Rajeev Chandrasekhar has sent a notice to the Meta-owned messaging platform stating that the onus of ensuring user safety lies with digital platforms. The minister further said that the digital platforms will have to respond to such instances of alleged misuse or alleged breach of users' privacy.Read More
How Zomato-backed Magicpin is going all out on its ONDC bet
After the Open Network for Digital Commerce (ONDC) crossed 11,000 retail transactions on April 30, Gurugram-based e-commerce startup Magicpin claimed that it had a role to play in 10,000 of those transactions on that date. It came as a bit of a jolt for some in the tech ecosystem. Perhaps if ONDC participants such as PhonePe and Paytm — fintech biggies with big bucks lined up — had made such a claim, it would not have seemed out of place.Read More
Elon Musk steps down as Twitter CEO, says he's found a woman to lead, and all the latest news
Twitter owner Elon Musk has said he has found a new chief executive officer (CEO) to helm the social media giant he bought last year. With his viral tweet, the billionaire has triggered a frenzy on possible candidates. Linda Yaccarino, the head of advertising of NBC Universal, is said to be in the race to become the next Twitter CEO, Wall Street Journal reported.Read More
Rising investments sign of changing perceptions of Telangana, says KTR
Telangana moved a step closer to its efforts to become the country's hub for electric vehicles and sustainable mobility, with the foundation being laid for one of India's largest, and the State's first lithium-ion battery gigafactory on Saturday. The Amara Raja Giga Corridor for Lithium Cell and Battery Pack Manufacturing will come up in Divitipalli of Mahbubnagar, with the unit to have a capacity of up to 16 GWh and cater to Indian and international markets.Read More
Tech News
New virus targets Android phone, steals call records, passwords and other sensitive data of users
A dangerous virus that has been targeting Android phones is hacking into call records of users, stealing passwords and other sensitive data. The government has issued an advisory against the new menace in town. The government has issued an advisory against malware called 'Daam' that can infect Android phones. This malware has the ability to gain unauthorized access to various aspects of your phone, such as call records, contacts, browsing history, and even your camera. The Indian Computer Emergency Response Team (CERT-In), which is the national cybersecurity agency, has provided this advisory.Read More
Apple previews accessibility features for people with disabilities
Coming later this year, the new accessibility features include live speech, personal voice, point-and-speak, and assistive access that would be available on iPhone, iPad, and Mac users. Ahead of Global Accessibility Awareness Day on May 18, Apple on Tuesday previewed software features for cognitive, vision, hearing, and mobility accessibility, along with tools for individuals who are non-speaking or at risk of losing their ability to speak.Read More
Soon, get real-time traffic, weather updates on Google Maps with Immersive View feature
To assist users with better navigation, tech giant Google has come up with the Immersive View feature for routes, announced during the Google I/O event. Utilising computer vision and artificial intelligence (AI) technology, Immersive View merges billions of Street View and aerial images to construct a comprehensive digital representation of the world. The feature puts all the information a user might need in one place. This includes information about real-time traffic, weather updates, bike lanes, complicated intersections, parking, and more. Let us take a look at how Google Maps' Immersive View for routes will make navigation easier.Read More
How to Access Google's AI Search and Bard Chatbot, know here now
Google recently revealed an upgraded search product at its annual conference in Mountain View, CA. The new product integrates more artificial intelligence (AI) and has been embedded into 25 Google products, such as the search updates and a feature that assists users in composing emails in Gmail. Known as the Search Generative Experience, this technology utilises generative AI to offer customised and precise responses to search inquiries.Read More
Entertainment News
Manoj Bajpayee says his wife Shabana felt 'insulted, humiliated' after watching one of his films: 'She said stop doing films for money'
Manoj Bajpayee who is promoting his film Sirf Ek Bandaaa Kaafi Hai, recently shared how his wife, Shabana Raza, once scolded him and told him to "stop doing films for money." Manoj was sharing an anecdote from the time when his wife went to watch a "bad film" starring him and she felt "humiliated" watching him romance heroines on screen. Manoj, without naming the film, said that when Shabana went to watch it, there were a few girls sitting behind her in the theatre who were "making fun" of him. "It was a bad film, bad film. After the film she called me and I asked how she liked the film, and she said, 'Stop doing films for money. We are not so desperate that you did it for money. It was embarrassing, I felt insulted, humiliated in the theatre, don't ever do it, please! You are good at stories and characters, please choose them, not these films, you don't need to prove anything else'," he shared with Janice Sequeira. Manoj said that it was a "great advice" even though it came in the form of "daantna (scolding)".Read More
Legendary singer Tina Turner passes away
Tina Turner, the unstoppable singer and stage performer who teamed with husband Ike Turner for a dynamic run of hit records and live shows in the 1960s and '70s and survived her horrifying marriage to triumph in middle age with the chart-topping "What's Love Got to Do With It," has died at 83. Turner died Tuesday, after a long illness in her home in Küsnacht near Zurich, according to her manager. She became a Swiss citizen a decade ago. Few stars traveled so far — she was born Anna Mae Bullock in a segregated Tennessee hospital and spent her latter years on a 260,000 square foot estate on Lake Zurich — and overcame so much. Physically battered, emotionally devastated and financially ruined by her 20-year relationship with Ike Turner, she became a superstar on her own in her 40s, at a time when most of her peers were on their way down, and remained a top concert draw for years after.Read More
Kareena Kapoor Spent A Perfect Saturday Night With BFF Amrita Arora
Kareena Kapoor Spent A Perfect 'Saturday Night' With BFF Amrita Arora - Pic Inside Amrita Arora shared this image. (courtesy: amuaroraofficial). Kareena Kapoor and Amrita Arora have been friends for decades now. The actresses are regular fixtures on each other's social media timeline. Now, Kareena Kapoor has shared yet another fun selfie with her BFF on Instagram Stories. In the selfie, both Kareena and Amrita are seen posing for the camera. Needless to say, the BFFs are pouting in the photo. While Amrita's outfit for the day is hidden in the photo, Kareena looks gorgeous in a pale green ensemble with a gold necklace. Along with the picture, Kareena Kapoor said, "Nothing like a Saturday night with your BFF" with a bunch of heart and star-eye emojis.Read More
Diana Penty keeps it classic in glamorous look at Cannes red carpet, wears little black dress for party
Diana Penty's first red carpet pictures from the 76th Cannes Film Festival are here. On Saturday, the actor attended the world premiere of May December starring Natalie Portman and Julianne Moore. Diana Penty walked the red carpet in a black cropped jacket paired with a matching black bottom. She wore minimal makeup. The actor also wore a little black dress for a party she attended on Saturday at Cannes 2023. Pictures of Diana in her stunning black looks were shared on fan pages with many applauding her fashion choices. For her party look, the actor wore a short black tassle dress with a pair of matching black heels. Diana tied her hair in a bun. Reacting to her photos shared on Twitter, a fan wrote, Looking too good in black. Another one called her party look 'the epitome of grace and glamour'.Read More
Sports News
Neeraj Chopra becomes World No.1 in men's javelin rankings
Tokyo Olympic gold medallist Neeraj Chopra has claimed number one ranking in men's javelin for the first time. Neeraj Chopra has topped the charts with 1455 points, 22 ahead of Grenada's Anderson Peters. On 30 August, 2022, the Indian javelin throw ace rose to World No. 2, but was stuck behind Peters, the reigning world champion, since then.Read More
The Curious Case Of Brad Pitt And A Formula 1 Car. Details Here
Get ready to witness actor Brad Pitt in the driver's seat of real Formula One car. Yes, you read it right. The Fight Club star will drive at British Grand Prix as part of shooting for Joseph Kosinski's directorial, Variety reported. During a panel about the untitled film at the F1 Accelerate Summit in Miami, Kosinski and producer Jerry Bruckheimer shared production details of the Apple Studios movie, which stars Pitt and counts seven-time Formula One champion Lewis Hamilton among its producers.Read More
Sudirman Cup: Doubts linger over India's participation with visa issues
India's participation in the prestigious Sudirman Cup lingers in doubt with the visa applications of the entire 23-member contingent, including PV Sindhu and HS Prannoy, yet to be cleared by the Chinese embassy in Delhi. The 2023 Sudirman Cup is slated to be held from 14th to 21st May in Suzhou, China. As per a report in Times of India, the Indian contingent, which is currently training in Hyderabad, has a flight booked for 10th May to travel to China from Bengaluru. The Badminton Association of India (BAI) has reportedly escalated this matter to the Badminton World Federation (BWF) under whose aegis the Sudirman Cup is hosted. What is to be noted here is the fact that the Chinese contingent had faced a similar issue while travelling to India for the 2023 India Open earlier in the year. But, this issue was duly solved following the intervention of BAIRead More
Iga Swiatek drags Madrid Open scheduling after runner-up finish
Speaking in her runner-up speech, Swiatek congratulated Sabalenka on her win and said that the Belarusian deserved the win. She also expressed her desire to play many more finals against the 25-year-old. The Pole thanked her team and her family before thanking the fans. She then stated that while she was glad to play in Madrid, it wasn't fun for her to play at 1 am in the night.Read More
Science News
Chemical Reactions Spark Life Into Self-Folding Micro Origami Machines
A Cornell-led collaboration harnessed chemical reactions to make microscale origami machines self-fold – freeing them from the liquids in which they usually function, so they can operate in dry environments and at room temperature. The approach could one day lead to the creation of a new fleet of tiny autonomous devices that can rapidly respond to their chemical environment. The group's paper, "Gas-Phase Microactuation Using Kinetically Controlled Surface States of Ultrathin Catalytic Sheets," was published on May 1 in Proceedings of the National Academy of Sciences. The paper's co-lead authors are Nanqi Bao, Ph.D. '22, and former postdoctoral researcher Qingkun Liu, Ph.D. '22.Read More
Study Has Found Widespread Mass Loss Glaciers In Greenland
A study has found widespread mass loss of glaciers and ice caps in Greenland since the start of the 20th century. The research provides critical insights into long-term changes to the glaciers and ice caps as a result of climate change, which has contributed about one fifth to global sea-level rise in the last decade. Using historical data, scientists mapped 5,327 glaciers and ice caps that existed at the end of the Little Ice Age in 1900, a period of wide-spread cooling when average global temperatures dropped by as much as 2°C. They were then able to reveal that these fragmented into 5,467 glaciers and ice caps by 2001. The study – Mass Loss of Glaciers and Ice Caps Across Greenland Since the Little Ice Age – published in the journal Geophysical Research Letters, said Greenland's glaciers have lost at least 587 km3 of ice over the last century, accounting for 1.38 millimetres of sea-level rise.Read More
Indian Scientists Unveil Breakthrough Method for Harvesting Artificial Light Using Organic Nanotube
A group of Indian scientists has made a groundbreaking discovery in the field of artificial light harvesting. Inspired by the natural process of photosynthesis, the researchers from the Indian Institute of Science Education and Research (IISER) Kolkata and the S N Bose National Center for Basic Sciences (SNBNCBS), Kolkata, developed a novel method using organic fluorescent molecule and a therapeutically important biopolymer. These organic nanotubes have a range of potential applications, including solar cells, photo catalysis, optical sensors, and tunable multi-color light-emitting materials. Similar to how plants use chlorophyll to convert sunlight into energy, the scientists utilized the organic nanotube to absorb artificial light and transfer the energy to a dye molecule such as Nile Red and Nile Blue. The dye molecule then emits color tuning from initial greenish-yellow to orange-red, including white light.Read More
The webs we weave: How Spidey science holds up in the real world
What would happen if a genetically engineered spider bit a human being? Could Spider-Man really do everything a spider can? The science isn't all baloney. Spider silk is truly one of the world's most impressive biomaterials. It's a protein made from compounds secreted by up to seven different glands, with the average spider having at least three. Each strand is made up thousands of nanostrands, making spider silk five times stronger than steel of the same width, researchers from the US's College of William and Mary have found. Their study was published in the journal ACS Macro Letters in 2018.Read More
Health News
'Disease X': Decoding the unknown pathogen WHO says could cause a 'deadlier pandemic'
Days after the World Health Organization (WHO) announced that COVID-19 was no longer a global health emergency, marking an end to the pandemic that claimed millions of lives, experts fear that "Disease X" can lead to an "even deadlier" pandemic. According to the WHO, "Disease X represents the knowledge that a serious international epidemic could be caused by a pathogen currently unknown to cause human disease." The term, which was coined in 2018, is on WHO's shortlist of 'priority diseases'. To prevent and tackle the outbreak of Disease X, experts are clamouring for a rise in funds to support the surveillance of, and research into, potential pandemic agents, according to a report in the New York Post.Read More
WHO advises against the use of non-sugar sweeteners
The World Health Organization on May 15 released a new guideline that recommends against the use of non-sugar sweeteners to control body weight or reduce the risk of non-communicable diseases. The Geneva-based WHO based the recommendation on a systemic review of available evidence, which suggests the use of non-sugar sweeteners does not confer any long-term benefit in reducing body fat in adults or children. The review also suggested the long-term use of non-sugar sweeteners potentially may have undesirable effects such as an increased risk of type 2 diabetes, cardiovascular diseases and mortality in adults.Read More
Health Department anticipates spurt in dengue cases, intensifies control measures in Coimbatore district
Anticipating a spurt in the number of dengue cases after a week or so, the Health Department has intensified control measures in Coimbatore district. The counter measures are primarily aimed at preventing the breeding of aedes aegypti mosquito, the primary vector of the virus causing dengue. P. Aruna, Deputy Director of Health Services, Coimbatore district, said the spurt was anticipated as the district received good spells of summer showers. "Chances of an increase in the breeding of mosquitoes are high as the rains have stopped. Health inspectors have been instructed to contact administrations of temples, mosques and churches to circulate village-specific awareness messages. Health inspectors have been asked to tie-up with scrap dealers who will collect waste materials, which may turn breeding ground for mosquitoes. The scrap dealers will visit a specific day in a village to collect such materials," she saidRead More
Breakthrough in microbial recycling! Scientists discover microbes that can digest plastics at low temperatures
Several microorganisms that can perform this have already been found, but they usually only work at temperatures above 30 degrees Celsius, which effectively means using them in the industrial sector would be expensive because of the additional heating cost, reported the Guardian.Read More
Politics News
Jagan Reddy Was Informed About Uncle's Death Before Public: CBI
Andhra Pradesh Chief Minister YS Jagan Mohan Reddy was informed about the death of his uncle and former minister YS Vivekananda Reddy much before the news became public, the Central Bureau of Investigation (CBI) told a court on Friday. The probe agency made the revelation in an affidavit before the Telangana High Court in response to an anticipatory bail petition filed by Kadapa MP YS Avinash Reddy, a member of the Chief Minister's party, who has been named an accused in the case. Avinash Reddy's father Bhaskar Reddy, who was arrested in connection with the case last month, was shifted to a hospital this morning.Read More
Petty politics to worst level - Union min slams those boycotting the event
With just a day left for the inauguration of the new Parliament building by Prime Minister Narendra Modi, both the Bharatiya Janta Party and the opposition are set to train guns at each other ahead of the event. At least 21 opposition parties have decided to boycott the PM's decision to preside over the inauguration ceremony instead of President Droupadi Murmu. The opposition said that the inauguration of the building without President Droupadi Murmu insults the high office of the President, and violates the letter and spirit of the Constitution. Meanwhile, amid the boycott call by the opposition, the Centre has received a confirmed list of 25 political parties, including some which are not a part of the National Democratic Alliance (NDA), that will participate in the inauguration ceremony.Read More
How 19 parties came on board for joint statement on new Parliament
When West Bengal chief minister Mamata Banerjee was meeting her Delhi and Punjab counterparts, Arvind Kejriwal and Bhagwant Mann, respectively, in Kolkata on Tuesday evening, a message to join the inauguration of the new Parliament building popped up on a Trinamool Congress (TMC) leader's mobile phone, said people aware of developments. The discussions between the three chief ministers briefly touched upon the May 28 event – when Prime Minister Narendra Modi will inaugurate the new Parliament building – and hours later, the TMC announced that it was pulling out of the ceremony, added the people cited above. The Aam Aadmi Party (AAP) followed suit after their two chief ministers landed in Mumbai.Read More
Vivekananda Reddy murder case: CBI team reaches Kurnool after Avinash rejects summons
Tension spread in Kurnool early on Monday morning as CBI officials reached Kurnool after YSR Congress Kadapa MP YS Avinash Reddy rejected CBI's summons in connection with the Vivekananda Reddy murder case. Avinash sought five more days from the CBI as his mother is currently hospitalised. The CBI team moved early morning probably to arrest Avinash who was at the Vishwa Bharati Hospital where his mother is hospitalised. A huge number of party workers gathered at the hospital to prevent the arrest.Read More