OS Operating system    FreeDOS Processor Processor   Intel® Core™ i5-4210U with Intel HD Graphics 4400 (1.7 GHz, 3 MB cache, 2 cores) MEMORY Memory, standard    4 GB 1600 MHz DDR3L SDRAM (1 x 4 GB) STORAGE Hard drive description  1 TB 5400 rpm SATA OPTICAL DISK DRIVE Optical drive   SuperMulti DVD burner GRAPHICS Graphics    NVIDIA GeForce 820M (2 GB DDR3 dedicated) Display Display size (diagonal)     15.6" Display     15.6" diagonal HD BrightView LED-backlit (1366 x 768) Connectivity Expansion slots     1 multi-format SD media card reader Network interface   Integrated 10/100 BASE-T Ethernet LAN Wireless    802.11b/g/n (1x1) and Bluetooth® 4.0 combo Ports/Slots Ports   1 USB 3.0; 2 USB 2.0; 1 HDMI; 1 RJ-45; 1 headphone/microphone combo INPUT Webcam  HP TrueVision HD Webcam (front-facing) with integrated digital microphone Pointing device     Touchpad with multi-touch gesture support Keyboard    Full-size textured island-style with numeric keypad Audio Audio features  Dual speakers POWER Power supply type   65 W AC power adapter Battery type    4-cell (41 WHr) Li-ion SECURITY Security management     Kensington MicroSaver lock slot; Power-on password; Accepts third-party security lock devices MACHINE DIMENSIONS &amp; WEIGHT Weight  Starting at 2.23 kg Minimum dimensions (W x D x H)  37.8 x 25.9 x 2.53 cm
I'm looking to download and install the latest version of Ubuntu to replace the current version of Windows I had pre-installed on my machine when bought it.   I have some really neat features on the machine that I really am hoping will still work when I move over to Ubuntu.  Can someone please confirm if the below will still work and, if not, how I can get them to work:   The USB ports on my machine The ethernet or Network work port on the machine The HDMI output on the machine and finally, the built in webcam   Thanks Sam
How to perform entity validation on code level? I have an entity that has a field attached to it and the values that user types into the field has to be globally(website) unique(compared to other entities).  I have added validation to the entity form but what if I create this entity programmatically? How can I prevent the entity to be saved into the storage?  I've noticed there is a validate method in ContentEntityBase, though not in ConfigEntityBase. Is this the place for it? If so, I could use some examples. An irreducible polynomial in a subfield of $\mathbb{C}$ has no multiple roots in $\mathbb{C}$ Pronoun question: referring to inanimate objects as 'he' or 'she' I read the following claim concerning pronouns referring to inanimate objects:      Anything that is meant to contain you, protect you or provide you with something beneficial is [often referred to as] a she; anything that is a perceived threat is a he. That's why cars, boats and some countries are she.    Is this really the case, or is it just a subjective claim? (According to the  using he/she for inanimate objects is not recommended and it should be used instead.) Is there a 'rule' for determining whether to use he, she or it based on the impression one would like to express? (I only know the 'rule' for animals: In the case where you know their gender and they are important to you, you refer to them using he/she. E.g. A dog attacked me in the street. It bit me. versus This is my dog Roger. He is 7 years old.) Have these practices changed over time?   Note 1: There is already a similar question (), but that considers only the feminine case and none of the answers offers an objective discussion of the matter.  Note 2: My native language is Czech, where the gender of the pronoun is based only on the grammatical gender of the noun. E.g. a cat (kočka) is always she, a dog (pes) is always he, a boat (loď) is always she and a car (auto) is always it. Can we have a list of all the Stack Exchange domains somewhere, for firewall purposes? Why Are There So Many Double Initials in Comic Books? Not being a comics expert, I can't be sure, but I think this applies mostly to Marvel comics.  Why do so many characters have double initials?  There's Pepper Potts, Reed Richards, Sue Storm, Peter Parker and I think at some times there was Bruce Banner (when it wasn't David Banner).  Is this an inside joke or is there some reasoning for this? I think this is just something I've grown used to but can't remember any proof.  When differentiating and integrating with trigonometric functions, we require angles to be taken in radians. Why does it work then and only then? Using INSERT INTO...EXEC AT linked server into temp table fails with Msg 7391 How do you run a Python script as a service in Windows? Allow rejected editors to be @replied to What can I actually do with a high credit score? I recently checked my credit score via two of my credit card providers. It seems to be hovering between 790 and 815. One service brands the score it provides as a FICO score and the other specifically says its score comes from Transunion.   What can I actually do to leverage this high credit score to my advantage?  The only new debt I might take on would be a small HELOC or car loan. Does a high score give me any negotiating power with the lender to get a better rate? Should I treat the score as a card in my hand or is it something I should show early in negotiations?  Does a high score make me eligible for any discounts on insurance?  Does a high score open up any options for earning more interest on savings accounts?  The typical advice I'm reading suggests refinancing a mortgage. That seems like good advice in general but it does not apply to my personal circumstances. I've got 3.5% on a 15 year note with 9 years left. A casual review of current rates suggest I could maybe scrape 0.5% off of that, hardly seems worth the effort and cost for half a percent. Norm $N$ on $\Bbb Z[\sqrt d]$ is multiplicative, $N(x)$ prime $\Rightarrow x$ irreducible Let $f$ be a continuous function on a set $E$.  Is it always true that $f^{-1}(A)$ is always measurable if $A$ is measurable?  I say no.  We know that $\bar{\psi(x)}:=\frac{\phi(x)+x}{2}$ where $\phi$ is the Cantor (or Cantor-Lebesgue) function and $\bar{\psi}:[0,1] \rightarrow [0,1]$.  We know this function maps a measurable subset of $C$ (the Cantor set) into a non-measurable set $W$.  A few observations about $\bar{\psi(x)}$.  It is strictly increasing and continuous, so it has a continuous inverse $\bar{\psi(x)}^{-1}$.  Thus $\bar{\psi(x)}^{-1}(W)=c \subset C$; that is, $\bar{\psi(x)}^{-1}(W)$ is non-measurable, but c is.  Is this correct? Intuitive examples of importance sampling My background is computer science. I am fairly new to monte carlo sampling methods and, although I understand the math, I have hard time coming up with intuitive examples for importance sampling. More precisely, could someone provide examples of:    an original distribution one cannot sample from but one can estimate an importance distribution which can be sampled from and adequate for this original distribution. Can you explain the "Axiom of choice" in simple terms? A bold plus symbol in math mode I'm trying to mount my HDD,  /dev/sdb, which is connected via an enclosure but every time I try do so I get an error message   mount: /dev/sdb: can't read superblock   How do I solve this problem and mount my HDD? I've been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e.  MyClass *m = (MyClass *)ptr;   all over the place, but there seem to be two other types of casts, and I don't know the difference. What's the difference between the following lines of code?  MyClass *m = (MyClass *)ptr; MyClass *m = static_cast&lt;MyClass *&gt;(ptr); MyClass *m = dynamic_cast&lt;MyClass *&gt;(ptr); What's the best order to read HP Lovecraft's novels? I've always been interested in the Cthulhu mythos and I wanted to get into HP Lovecraft's books. What is the best book to start with? I know that Cthulhu was first mentioned in Lovecraft's Call of Cthulhu in 1928. Is that the best book to start with? Should I just start reading Lovecraft's books from his first publication onward? Let $f: \Bbb R \to \Bbb R$ be a differentiable function such that $\sup_{x \in \Bbb R}|f'(x)| \lt \infty$. Then (UGC CSIR-2015, DECEMEMBER, MATHEMATICAL SCIENCES)        $f$ maps a bounded sequence to a bounded sequence.   $f$ maps a Cauchy sequence to a Cauchy sequence.   $f$ maps a convergent sequence to a convergent sequence.   $f$ is uniformly continuous.      I choose all of the options as possible answers because the condition $\sup_{x\in \Bbb R}|f'(x)| \lt \infty$ forces $f$ to be uniformly continuous.(Because $f$ becomes Lipschitz and Lipschitz condition implies uniform continuity)  i.e. $\frac {|f(x)-f(y)|}{|x-y|} \le \sup_{x\in \Bbb R}|f'(x)|$ $ \forall x,y$.  Hence all other options are bound to be true.  Am I correct? Solve $p_4(x) = x^4 −(2m + 4)x^2 + (m−2)^2 $such that $p_4$ is a product of two non-constant integer-coeficient polynomials I'm having trouble getting the starting idea for a problem I've been presented with:  I need to find values for m (integer) such that the following polynomial     $p_4(x) = x^4 −(2m + 4)x^2 + (m−2)^2$; $m$ is integer   can be described as the product of two non-constant integer-coeficient polynomials.  Any help/pointers/tips on how to go about this are greatly appreciated!  Edit: I meant polynomials with integer coeficients, but for some reason typed positive.