My family and I are planning to visit UK in October. My agenda is; 1. Visit old architecture of Bath 2. Strafford upon Avon 3. Lake District 4. Pitlochry  5. London  I will travel with Nikon D7100 and the lens available are Sigma 17-50 F2.8, Tokina 11-16 F2.8, Nikkor 35mm F1.8, Nikkor 300mm F4 AFS and Tamron 150-600 VC.  I love architecture, landscape and also bird ( + hopefully salmon leaping). Will I see lot of birds at those places?  Do I need to bring along all those lens. Please help me choose.  TQ
On a crop sensor camera, e.g. Canon EOS 7D, what would be the best kit to travel with around Europe for a few weeks? My shooting style will focus on landscape, architecture, and general travel shots (of note would be my lack of interest for portraits).     Limit to around 1-3 lenses, and I prefer light ones.   Crop sensor camera chosen to save on weight over a full frame option. Question is open to all brands for general guidance, but I will be using a Canon body.   Cost is not a factor, I will rent the lenses I do not already own.   Quality is of paramount importance. I will not have a tripod.   I understand some may consider this subjective, but I do believe that for a crop sensor body, with weight as a consideration, and a limit to the amount of lenses, a true best kit can be determined.
If $A$ and $B$ are positive definite, then is $B^{-1} - A^{-1}$ positive semidefinite? Why do we use the object instead of the subject pronoun in constructions like "stupid me"? I'm trying to find out how come we say lucky me and stupid us rather than lucky I and stupid we. My understanding is that this is not a recent invention, but a relic from the distant past where it was a dative construction. However, I don't see the reason for using any case other than the nominative in this construction to begin with.        He went surfing. → Lucky him went surfing.   I got pulled over. → Stupid me got pulled over.   They bought a house. → Thoughtless them bought a house.      This is rather intriguing. After thinking about it for a while, I couldn't come up with any other language, Germanic or otherwise, where simply introducing an adjective would dictate a change of grammatical case. This appears to be an English peculiarity. How far can it be traced back? Can anyone comment on its background? MLE for Poisson-binomial distribution I am looking for the maximum likelihood estimator (MLE) for the .  I understand the derivation of the MLE for a  and a , but I am unable to derive the MLE equation for the Poisson-binomial distribution. How to analyze lightly varying senses of adjective *very* Use of very as an adjective is (in my experience) most frequently attested in phrases like     ...the very person I was looking for.   To use adjective very with the indefinite article sounds quite bizarre in this case:     ?...a very person I was looking for.   But consider this sentence, where indefinite a is used:     Visualizing a very transformation of the master-slave relation, Thomas presses further: the slave is brother to the master, even doubly a brother.   OED treats the two uses as separate senses of the word, with the following definitions:           (first use):&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;With limitation (usually expressed by the or a possessive) to particular instances      (second use): Really or truly entitled to the name or designation   Here are two respective examples quoted in OED:     What would you say to me now, and I were your verie, verie Rosalind? (1616)   Thence we went into Queen Mary's room, and saw that beautiful portrait—that very queen and very woman. (1857)   Clearly, the difference in meaning between the two senses is quite light, and it seems to me like a kind of difference which is recurrent enough to have its own term. What is the proper term? Are there other English words having similarly related pairs of senses? And lastly, is OED jumping the gun in treating these as two senses? Could the difference in meaning instead be due to the choice of determiner? Whenever I try to Get then Install any app from the App Store, I get this message:     We could not complete your purchase.  cancelled   I did some searching online, but barely found any useful hits. What is this about?! Let $A$ be an infinite set. For each $a \in A$, let $x_a$ be a non-negative number. Let the value of the series $\sum_{a \in A} x_a$ be the value of the supremum of its finite partial sums, i.e.:      $$\sum_{a \in A} x_a = \sup_{n \geq 0} \sup_{(a_1, \ldots , a_n) \subset A} \left(x_{a_1} + x_{a_1} + \ldots + x_{a_n}\right)$$   (Supremum is well defined even when its value is infinite)       If $\sum_{a \in A} {x_a}$ is finite, prove that the set $A' = \left\{{a \in A | a &gt; 0}\right\}$   is countable.   My guess is that we have to write $A$ as a union of finitely many sets. How do I create an 8 sided die from one object? Simply put, is there a way to make a cube balance solely on one point/vertex?  I'm struggling. I do not want to have to join two objects, nor have to extrude an object. I just want to have a simple eight-sided die created with one mesh. I have asked this question before ( and  )  My problem is that my Self Encrypted Disk (SED) have to NOT spin down even on suspend!  I have tried , but it did not work and the disk spin downs anyway !  The problem is that if the disk spins down, because it is on suspend, it does not show the "de encryption" prompt, and boots back up on RAM, but crashed due to IO error on the disk! (that's what the disk is suposed to do !)  Anyone on how to NOT (as in NEVER) spin down a HDD ? (yes this goes against all logic but this particular case)   Thanks a lot !  Would that be useful ?   sudo hdparm -I /dev/sda [sudo] password for xqua:   /dev/sda:  ATA device, with non-removable media     Model Number:       ST500LT015-9WU142                            Serial Number:      W0VBZQQ7     Firmware Revision:  0001SDM7     Transport:          Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6 Standards:     Used: unknown (minor revision code 0x0029)      Supported: 8 7 6 5      Likely used: 8 Configuration:     Logical     max current     cylinders   16383   16383     heads       16  16     sectors/track   63  63     --     CHS current addressable sectors:   16514064     LBA    user addressable sectors:  268435455     LBA48  user addressable sectors:  976773168     Logical  Sector size:                   512 bytes     Physical Sector size:                  4096 bytes     Logical Sector-0 offset:                  0 bytes     device size with M = 1024*1024:      476940 MBytes     device size with M = 1000*1000:      500107 MBytes (500 GB)     cache/buffer size  = 16384 KBytes     Form Factor: 2.5 inch     Nominal Media Rotation Rate: 5400 Capabilities:     LBA, IORDY(can be disabled)     Queue depth: 32     Standby timer values: spec'd by Standard, no device specific minimum     R/W multiple sector transfer: Max = 1   Current = 1     Advanced power management level: 254     Recommended acoustic management value: 208, current value: 0     DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6           Cycle time: min=120ns recommended=120ns     PIO: pio0 pio1 pio2 pio3 pio4           Cycle time: no flow control=120ns  IORDY flow control=120ns Commands/features:     Enabled Supported:        *    SMART feature set        *    Power Management feature set        *    Write cache        *    Look-ahead        *    Host Protected Area feature set        *    WRITE_BUFFER command        *    READ_BUFFER command        *    NOP cmd        *    DOWNLOAD_MICROCODE        *    Advanced Power Management feature set             Power-Up In Standby feature set        *    SET_FEATURES required to spinup after power up             SET_MAX security extension        *    48-bit Address feature set        *    Device Configuration Overlay feature set        *    Mandatory FLUSH_CACHE        *    FLUSH_CACHE_EXT        *    SMART error logging        *    SMART self-test        *    General Purpose Logging feature set        *    WRITE_{DMA|MULTIPLE}_FUA_EXT        *    64-bit World wide name        *    IDLE_IMMEDIATE with UNLOAD        *    Write-Read-Verify feature set        *    WRITE_UNCORRECTABLE_EXT command        *    {READ,WRITE}_DMA_EXT_GPL commands        *    Segmented DOWNLOAD_MICROCODE        *    Gen1 signaling speed (1.5Gb/s)        *    Gen2 signaling speed (3.0Gb/s)        *    Native Command Queueing (NCQ)        *    Host-initiated interface power management        *    Phy event counters        *    Idle-Unload when NCQ is active             Device-initiated interface power management        *    Software settings preservation        *    SMART Command Transport (SCT) feature set        *    SCT Write Same (AC2)        *    SCT Features Control (AC4)        *    SCT Data Tables (AC5)             unknown 206[12] (vendor specific)        *    reserved 69[4]        *    reserved 69[7] Logical Unit WWN Device Identifier: 5000c5006a036439     NAA     : 5     IEEE OUI    : 000c50     Unique ID   : 06a036439 Checksum: correct What was Dolores Umbridge's blood status? Dolores Umbridge's dislike of Muggles, Muggle-born witches and wizards and half-breeds is quite obvious. In Order of the Phoenix she takes a particular dislike to Hagrid due to his giantess mother (and his allegiance to Dumbledore), as well as to the centaur Firenze who takes over as Divination teacher after Professor Trelawney is sacked. And, of course, during Deathly Hallows she is made Head of the Muggle-Born Registration Commission.  In Deathly Hallows, when Hermione (under the effects of Polyjuice potion) comments on the locket she's wearing, Umbridge says this:     "That's - that's pretty, Dolores," she said, pointing at the pendant gleaming in the ruffled folds of Umbridge's blouse.      "What?" snapped Umbridge, glancing down. "Oh yes - an old family heirloom," she said, patting the locket lying on her large bosom. "The S stands for Selwyn... I am related to the Selwyns... Indeed, there are few pure-blood families to whom I am not related. ..."   That seems a rather large and contrived lie to tell just to explain her possession of the locket, considering her blood status had never been questioned by the Ministry. I don't remember it being covered anywhere in the books (which I just recently re-read, so I'd hope I'd remember if it had been!), but I was wondering if there was any other evidence (interviews, etc) to say whether Umbridge was Pure-blood, Half-blood or Muggle-born? Comprehensive list of tools that simplify the generation of LaTeX tables Question  I want to write a book in Arabic (I have an Arabic keyboard, so I don't need a converter). By Arabic book I mean literally Arabic:    title, table of contents  etc    all in Arabic.   The equations, however, I want to write them in English/Latin.  Related    This link helped a lot but it was for Arabic texts in an English main document.    I already checked these two (and plenty other sites). Prove if $(a,p)=1$, then $\{a,2a,3a,...,pa\}$ is a complete residue system modulo $p$. let $p$ be a prime and let $a$ be an integer not divisible by $p$, that is $(a,p)=1$. Then $\{a,2a,3a,...,pa\}$ is a complete residue system modulo $p$.  Since $p\nmid a$, $p\nmid\{a,2a,3a,...,(p-1)a\}$ Since $p|p$, $p|\{pa\}$ which is exactly one element in the set and is therefore a complete residue system.   Wondering if this is an acceptable proof to this theorem. How to automatically restart a linux background process if it fails? Why $f(x) = \sqrt{x}$ is a function? Why $f(x) = \sqrt{x}$ is a function (as I found in my textbook) since for example the square root of $25$ has two different outputs ($-5,5$) and a function is defined as "A function from A to B is a rule of corre- spondence that assigns to each element in set A exactly one element in B.", so $f(x) = \sqrt{x}$ is not a function? What happens if 2 separate abilities require you to sacrifice a creature? If i have two cards that force opponents to sacrifice every upkeep like for example  "At the beginning of each opponent’s upkeep, Mogis deals 2 damage to that player unless he or she sacrifices a creature."  And  "At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life."  Does the oppenent have to sacrifice twice? Or if they sacrifice Mogis's ability have they not allowed me to draw from indulgent tormentor? Summer in Saint Helena The Winter Bash site is located at http://winterba.sh/.  Only one problem:   . Saint Helena is in the Southern Hemisphere. It's Summer in Saint Helena.   So shouldn't it be the Summer Bash? Don't forget our Aussie/Kiwi/South African/Southern Brazilian/Argentine/Uruguayan/Zimbabwean/Swazi/Tokelauan/Tuvaluan/Pitcairn Islander/ friends! What does it mean to instantiate a trait? How to connect two parents to the same child, with parents not in the same tree? I'm trying to draw a specific tree, with two parents node linked to the same child. The problem is that one of the parent is outside the main tree.  Here's the code I have for the moment:  \documentclass{article} \usepackage{tikz-qtree,tikz-qtree-compat} %\usepackage{gb4e} \usepackage{forest}  \begin{document}  %\begin{exe} \begin{forest} qtree edges/.style={for tree= parent anchor=north, child anchor=south}    [A, grow=north        [C, name=C, grow'=north            [D, grow=north ]            [E, name=t5, grow=north ]        ]        [B, grow=north ]    ]    \hspace{0.8cm}    [$F$, name=F, grow=north ]    %\draw (F.north) -- (C.south); \end{forest} %\end{exe}  \end{document}   I'd like the nodes F and C to be connected. I don't know why, but if I delete the dollar signs, node F doesn't even appear on my document.  Another thing is that I want the forest environment to be embedded in an example environment, but this doesn't work either.  Thanks in advance for your help! High p-values for logistic regression variable that perfectly separates? I'm using R to run some logistic regression. My variables were continuous, but I used cut to bucket the data. Some particular buckets for these variables always result in dependent variable being equal to 1. As expcted, the coefficient estimate for this bucket is very high, but the p-value is also high. There are about ~90 observations in either these buckets, and around 800 total observations, so I don't think it's a problem of sample size. Also, this variable should not be related to other variables, which would naturally reduce their p-values.  Are there any other plausible explanations for the high p-value?  Example:  myData &lt;- read.csv("application.csv", header = TRUE) myData$FICO &lt;- cut(myData$FICO, c(0, 660, 680, 700, 720, 740, 780, Inf), right = FALSE) myData$CLTV &lt;- cut(myData$CLTV, c(0, 70, 80, 90, 95, 100, 125, Inf), right = FALSE) fit &lt;- glm(Denied ~ CLTV + FICO, data = myData, family=binomial())   Results are something like this:  Deviance Residuals:       Min        1Q    Median        3Q       Max   -1.53831  -0.77944  -0.62487   0.00027   2.09771    Coefficients:                 Estimate Std. Error z value Pr(&gt;|z|)     (Intercept)     -1.33630    0.23250  -5.747 9.06e-09 *** CLTV(70,80]     -0.54961    0.34864  -1.576 0.114930     CLTV(80,90]     -0.51413    0.31230  -1.646 0.099715 .   CLTV(90,95]     -0.74648    0.37221  -2.006 0.044904 *   CLTV(95,100]     0.38370    0.37709   1.018 0.308906     CLTV(100,125]   -0.01554    0.25187  -0.062 0.950792     CLTV(125,Inf]   18.49557  443.55550   0.042 0.966739     FICO[0,660)     19.64884 3956.18034   0.005 0.996037     FICO[660,680)    1.77008    0.47653   3.715 0.000204 *** FICO[680,700)    0.98575    0.30859   3.194 0.001402 **  FICO[700,720)    1.31767    0.27166   4.850 1.23e-06 *** FICO[720,740)    0.62720    0.29819   2.103 0.035434 *   FICO[740,780)    0.31605    0.23369   1.352 0.176236     --- Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1  (Dispersion parameter for binomial family taken to be 1)      Null deviance: 1037.43  on 810  degrees of freedom Residual deviance:  803.88  on 798  degrees of freedom AIC: 829.88  Number of Fisher Scoring iterations: 16   FICO in the range [0, 660) and CLTV in the range (125, Inf] indeed always results in Denial = 1, so their coefficients are very large, but why are they also "insignificant"? What is the difference between an "API," a "framework," an "IDE," and an "engine?"