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• Cleaning Up After Chrome

  - by Mark Treadwell

  I find Google Chrome, which I have no interest in, is continually getting installed on machines in my house, mostly due to Adobe Shockwave bringing it along as an install package. (Family members are agreeing to the download, not realizing the Chrome is getting dropped as well.) My major issue after uninstalling Chrome is that you can no longer click on links in Outlook emails. There is a lot on the web about this, and Google has not been proactive at fixing their uninstaller. I have now added a registry file to my Win64 systems to reset the problem registry keys and clear the error. This registry file is pretty simple. It merely resets HKEY_CURRENT_USER\Software\Classes\.htm, HKEY_CURRENT_USER\Software\Classes\.html, and HKEY_CURRENT_USER\Software\Classes\.shtml back to their default values of "htmlfile". Chrome takes over the handling of these file extensions because its default install is to make itself the default web browser. The Chrome uninstalled fails to clear/reset them. In troubleshooting this, I looked in my registry based on the web info on the Chrome uninstall problem. Since my system had never had Chrome installed, my registry did not have the problem keys. To troubleshoot, I installed (ugh!) and uninstalled Chrome. Sure enough, Chrome left the expected debris with a value string of "ChromeHTML.PR2EPLWMBQZK3BY7Z2BFBMFERU" or something similar. Resetting these values fixed the problem. I see that Chrome leaves quite a bit of debris behind in the registry. I guess it is creating the keys then leaving them behind, even though their presence (with bad data) subsequently affects operations.

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• Better solution for boolean mixing?

  - by Ruben Nunez

  Sorry if this question has been asked in the past, but searching Google and here didn't yield relevant results, so here goes. I'm working on a fragment shader that implements both conditional/boolean diffuse and bump mapping (that is to say, you don't need a diffuse texture or a normals texture, and if they're not present, they're simply changed to default values). My current solution is to use a uniform float to say "mix amount". For example, computing the diffuse texel works as: // Compute diffuse amount scaled by vCol // If no texture is present (mDif = 0.0), then DiffuseTexel = vCol // kT[0] is the diffuse texture // vTex is the texture co-ordinates // mDif is the uniform float containing the mix amount (either 0.0 or 1.0) vec4 DiffuseTexel = vCol*mix(vec4(1.0), texture2D(kT[0], vTex), mDif); While that works great and all, I was wondering if there's a better way of doing this, as I will never have any use for in-between values for funky effects. I know that perhaps the best solution is to simply write separate shaders for mDif=0.0 and mDif=1.0, but I'd like a more elegant solution than splicing shaders before compiling or writing multiple shader files and keeping each one updated. Any ideas are greatly appreciated. =)

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• Root cause for high CPU usage; which measurement to trust more: Windows Task Manager or Process Explorer?

  - by p.campbell

  Consider this Windows 8.1 machine (in-place upgrade from Windows 8) with differing reports on its CPU usage. The machine is idle, and has been for 3 days. There are no CPU intensive tasks running currently nor over the 3 day idle period. Windows Task Manager is reporting CPU usage constantly at an incredibly high value (and increasing over time!) at around 75%. Process Explorer from SysInternals reports that the CPU usage is much different at around 42% How does Process Explorer report 42.14% usage, but its columns report Idle at 57%, with the sum of the other processes not even approaching 10%? Which of these two values should I trust more, and why should it be trusted over the other measurement? How can I actually determine which process is causing Task Manager to report its values? These Proc Exp metrics were taken with Administrator privileges, and with option 'Show Details for All Processes' Click for larger view:

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• problems texture mapping in modern OpenGL 3.3 using GLSL #version 150

  - by RubyKing

  Hi all I'm trying to do texture mapping using Modern OpenGL and GLSL 150. The problem is the texture shows but has this weird flicker I can show a video here http://www.youtube.com/watch?v=xbzw_LMxlHw and I have everything setup best I can have my texcords in my vertex array sent up to opengl I have my fragment color set to the texture values and texel values I have my vertex sending the textures cords to texture cordinates to be used in the fragment shader I have my ins and outs setup and I still don't know what I'm missing that could be causing that flicker. here is my code FRAGMENT SHADER #version 150 uniform sampler2D texture; in vec2 texture_coord; varying vec3 texture_coordinate; void main(void){ gl_FragColor = texture(texture, texture_coord); } VERTEX SHADER #version 150 in vec4 position; out vec2 texture_coordinate; out vec2 texture_coord; uniform vec3 translations; void main() { texture_coord = (texture_coordinate); gl_Position = vec4(position.xyz + translations.xyz, 1.0); } Last bit here is my vertex array with texture cordinates GLfloat vVerts[] = { 0.5f, 0.5f, 0.0f, 0.0f, 1.0f , 0.0f, 0.5f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f}; //tex x and y HERE IS THE ACTUAL FULL SOURCE CODE if you need to see all the code in its fullest glory here is a link to every file http://ideone.com/7kQN3 thank you for your help

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• TXPAUSE : polite waiting for hardware transactional memory

  - by Dave

  Classic locks are an appropriate tool to prevent potentially conflicting operations A and B, invoked by different threads, from running at the same time. In a sense the locks cause either A to run before B or vice-versa. Similarly, we can replace the locks with hardware transactional memory, or use transactional lock elision to leverage potential disjoint access parallelism between A and B. But often we want A to wait until B has run. In a Pthreads environment we'd usually use locks in conjunction with condition variables to implement our "wait until" constraint. MONITOR-MWAIT is another way to wait for a memory location to change, but it only allows us to track one cache line and it's only available on x86. There's no similar "wait until" construct for hardware transactions. At the instruction-set level a simple way to express "wait until" in transactions would be to add a new TXPAUSE instruction that could be used within an active hardware transaction. TXPAUSE would politely stall the invoking thread, possibly surrendering or yielding compute resources, while at the same time continuing to track the transaction's address-set. Once a transaction has executed TXPAUSE it can only abort. Ideally that'd happen when some other thread modifies a variable that's in the transaction's read-set or write-set. And since we're aborting all writes would be discarded. In a sense this gives us multi-location MWAIT but with much more flexibility. We could also augment the TXPAUSE with a cycle-count bound to cap the time spent stalled. I should note that we can already enter a tight spin loop in a transaction to wait for updates to address-set to cause an abort. Assuming that the implementation monitors the address-set via cache-coherence probes, by waiting in this fashion we actually communicate via the probes, and not via memory values. That is the updating thread signals the waiter via probes instead of by traditional memory values. But TXPAUSE gives us a polite way to spin.

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• Highlighting duplicate column-pair and counting the rows Excel

  - by pleasehelpme

  Given the data below, the column-pair with the same values for at least 4 consecutive rows should be highlighted. image here for better visualization: http://i49.tinypic.com/2jeshtt.jpg 2 2 3 4 3 4 3 4 3 4 2 3 1 2 2 2 3 3 3 3 3 3 3 3 2 3 2 3 2 3 2 3 2 2 3 4 3 4 3 4 3 4 3 4 The output should be something like this, where the column-pair values that are the same for at least 4 consecutive rows are highlighted. image here for better visualization: http://i48.tinypic.com/i2lzc8.jpg 2 2 3 4 3 4 3 4 3 4 2 3 1 2 2 2 3 3 3 3 3 3 3 3 2 3 2 3 2 3 2 3 2 2 3 4 3 4 3 4 3 4 3 4 Then, I need to know the number of instances of the N-consecutive equal column-pair. Considering the data above, N=4 should be 3 and N=5 should be 1, where N is the number of rows that the column-pair is consecutively equal.

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• Spherical to Cartesian Coordinates

  - by user1258455

  Well I'm reading the Frank's Luna DirectX10 book and, while I'm trying to understand the first demo, I found something that's not very clear at least for me. In the updateScene method, when I press A, S, W or D, the angles mTheta and mPhi change, but after that, there are three lines of code that I don't understand exactly what they do: // Convert Spherical to Cartesian coordinates: mPhi measured from +y // and mTheta measured counterclockwise from -z. float x = 5.0f*sinf(mPhi)*sinf(mTheta); float z = -5.0f*sinf(mPhi)*cosf(mTheta); float y = 5.0f*cosf(mPhi); I mean, this explains that they do, it says that it converts the spherical coordinates to cartesian coordinates, but, mathematically, why? why the x value is calculated by the product of the sins of both angles? And the z by the product of the sine and cosine? and why the y just uses the cosine? After that, those values (x, y and z) are used to build the view matrix. The book doesn't explain (mathematically) why those values are calculated like that (and I didn't find anything to help me to understand it at the first Part of the book: "Mathematical prerequisites"), so it would be good if someone could explain me what exactly happen in those code lines or just give me a link that helps me to understand the math part. Thanks in advance!

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• Cheap ways to do scaling ops in shader?

  - by Nick Wiggill

  I've got an extensive world terrain that uses vec3 for the vertex position attribute. That's good, because the terrain has endless gradations due to the use of floating point. But I'm thinking about how to reduce the amount of data uploaded to the GPU. For my terrain, which uses discrete / grid-based vertex positions in x and z, it's pretty clear that I can replace my vec3s (floats, really) with shorts, halving the per-vertex position attribute cost from 12 bytes each to 6 bytes. Considering I've got little enough other vertex data, and an enormous amount of terrain data to push into the world, it's a major gain. Currently in my code, one unit in GLSL shaders is equal to 1m in the world. I like that scale. If I move over to using shorts, though, I won't be able to use the same scale, as I would then have a very blocky world where every step in height is an entire metre. So I see these potential solutions to scale the positional data correctly once it arrives at the vertex shader stage: Use 10:1 scaling, i.e. 1 short unit = 1 decimetre in CPU-side code. Do a division by 10 in the vertex shader to scale incoming decimetre values back to metres. Arbirary (non-PoT) divisions tend to be slow, however. Use (some-power-of-two):1 scaling (eg. 8:1), which enables the use of a bitshift (eg. val >> 3) to do the division... not sure how performant this is in shaders, though. Not as intuitive to read values, but possibly quite a bit faster than div by a non-PoT value. Use a texture as lookup table. I've heard that this is really fast. Or whatever solutions others can offer to achieve the same results -- minimal vertex data with sensible scaling.

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• How to Create tree type CVL in Content server(UCM)

  - by rajeev.y.ranjan-oracle

  Steps to create tree choice list:1)Create a table "tblStates" with column "stateID" and "stateName". Click on "ADD Recommended".2) Create another table "tblCities with columns "cityID", "stateID" and "cityName".3)Then create two views on these tables namely "tblstateview" and "tblcityview".3)In "StateView" added two rows with values as JH and MH in stateID column.Jharkhand and Maharastra in stateName.4)Similarly in tblcityview added two rows with values as:BO and RA in cityID column.JH and MH in stateID columnBokaro and Mumbai in cityname column.5)Created relationship with Parentinfo "tblStates" and stateID and  childinfo with tblCities and stateID.6)Created metadata by name "Newtest"Enable option list,go to the configure ,Select use tree,Click on go edit definition 7)Tree Definition at level 1: a)Choose" tblstateView"b)Choose relation "newstatecity"At Level2:a)Choose cityView.Log out of the NativeUI and ContentUI and test the tree created by name "Newtest".

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• ForceAutoLogon Ignored in windows 7 when setting up Autologin - Autologon

  - by user1082202

  I am attempting to setup automatic logon for a windows 7 kiosk computer via the registry. I have set the values under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon like this: AutoAdminLogon = 1 ForceAutoLogon = 1 DisableCAD = 1 I have filled out the username and password fields. I have also deleted all EULA related values (a prerequisite of ForceAutoLogon) I have done this procedure on 2 computers. On computer A: When rebooting, we logon automatically. When logging out from the start menu, we logon automatically immediately after logging out. On computer B: When rebooting, we logon automatically. When logging out from the start menu, we are presented with a logon menu where the user needs to click a user name & then enter a password. It seems like the value of ForceAutoLogon requires some other prerequisite that is met on computer A, but not on computer B. What do I need to make computer B act like computer A when clicking the log off button from the windows start menu?

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• Ms Excel 2010 Importing Data in One ROW and getting sum particular CELL

  - by Omeshanker

  I am importing data by using .txt file to MS Excel and whole data is imported in ONE ROW. I want to get SUM of those values which corresponds to a particular Month. For Example :- Name Month Total Value Mark Jan 2000 Mark Jan 1500 Mark Feb 2900 Mark Feb 3000 I want to get the TOTAL value in the Month Jan in a particular Cell. Kindly tell me how to proceed. NOTE: Whole data is imported in one ROW only. So the formula should add automatically those values which it finds out on the row. Thanks Omesh

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• Can I search for HTML meta tags?

  - by Jim

  Is there a search engine that will allow me to search for specific HTML meta tag values?

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• How to schedule a biweekly cronjob?

  - by Roman

  crontab(5) defines the following fields: field allowed values ----- -------------- minute 0-59 hour 0-23 day of month 1-31 month 1-12 (or names, see below) day of week 0-7 (0 or 7 is Sun, or use names) and explains: Step values can be used in conjunction with ranges. Following a range with ``/<number>'' specifies skips of the number's value through the range. For example, ``0-23/2'' can be used in the hours field to specify command execution every other hour (the alternative in the V7 standard is ``0,2,4,6,8,10,12,14,16,18,20,22''). So, no biweekly Jobs, as far as my understanding goes. I'm quite sure there are workarounds, what are yours? Or did I miss something?

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• What kinds of issues can one expect when changing a domain names registar? (3 questions)

  - by anonymous-one

  Assuming that there are no 'unusual' items that come up, what kind of disruptions can one expect when moving a domain between registrars? I understand some of the below may vary over registrars. But assuming both ends are large proficient registrars: a) Will the NS settings be mirrored? We use a dedicated dns service provider so we are not using the originating registrars name servers. All that we are concerned about is that the existing NS values are mirrored at the target registrar. b) Are incoming domain transfers automated on the target registrar end? Eg: If we begin the transfer process during business hours at the source registrar, will someone have to manually approve the inbound transfer (most likely during their business hours) at the target registrar? c) Is the domain ever 'in limbo'? At any time in the process is there ever a time when the NS values for the domain are not populated (as they were prior to initiating the transfer) OR one does not have access to populate them (at the target registrar)? Thank you kindly for the help.

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• Extracting RTD (Real Time Data) from Excel file

  - by Mat0930912

  Hi everyone. I have an Excel 2010 file containing auto-updating cells with RTD. Example of cell: =RTD("xxx";"yyy") I need to extract (in a .txt file) those cells' values, every X minutes. My .txt file MUST contain the updated value. I tried with a macro. That macro exports every X minutes a txt file of the Excel file. The problem is that when macro is running, cells doesn't update: the values remain the same of those before the macro was launched. It looks like macro forbids the updating. How can I do? Thank you.

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• Is this the correct approach to an OOP design structure in php?

  - by Silver89

  I'm converting a procedural based site to an OOP design to allow more easily manageable code in the future and so far have created the following structure: /classes /templates index.php With these classes: ConnectDB Games System User User -Moderator User -Administrator In the index.php file I have code that detects if any $_GET values are posted to determine on which page content to build (it's early so there's only one example and no default): function __autoload($className) { require "classes/".strtolower($className).".class.php"; } $db = new Connect; $db->connect(); $user = new User(); if(isset($_GET['gameId'])) { System::buildGame($gameId); } This then runs the BuildGame function in the system class which looks like the following and then uses gets in the Game Class to return values, such as $game->getTitle() in the template file template/play.php: function buildGame($gameId){ $game = new Game($gameId); $game->setRatio(900, 600); require 'templates/play.php'; } I also have .htaccess so that actual game page url works instead of passing the parameters to index.php Are there any major errors of how I'm setting this up or do I have the general idea of OOP correct?

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• How are certain analytics metrics (time on site, etc.) usually distributed?

  - by a barking spider

  I'm not sure if I've come to the right place to ask this question, but I'm gathering some information for a research project. We're trying to design an experiment that'll heavily involve web analytics, and I'm trying to figure out some sensible values of mean +/- standard deviation for the following visitor-level (i.e., visitor 1 spends 2 minutes on site, visitor 2 spends 1 minute -- mean 1.5 +/- 0.71...) metrics: time spent on site page views If time allowed, we would put up the sites and gather the information ourselves, but we have a grant deadline coming up. I realize that even though these the distributions of these quantities are probably going to be heavily skewed towards zero, we'll need some reasonable figures or estimates of these figures in order to do sample size calculations, etc. Anyway, I'm not sure where else I'd turn, and I certainly have had a difficult time finding these values in the prior literature. If someone could direct me to a paper with the right information, or if you have these figures on hand (perhaps taken directly from your logs!) -- that would be amazing, and I'd love to hear from you. Thanks in advance, and even though I'm not allowed to reveal too much, rest assured that this info'll be applied towards a good cause :)

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• Compute number of occurrences in a column of a spreadsheet

  - by wnstnsmth

  I have a Google Drive spreadsheet with a single column that holds string values (Twitter screen names) such as "user1", "user1", "UserX", and I would like to count those values so that I can easily craft a bar chart out of it. So the result should be value occurrence ----------------------- user1 2 UserX 1 ... .... Please note, I only want to look for whole words, and not part words. EG, the words 'on' and 'one' appears in the word 'money' - I would not count this (eg, only the word money is counted). Hope that is clear enough. What formula should I use?

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• How to store a list of Objects that might change in future?

  - by Amogh Talpallikar

  I have set of Objects of the same class which have different values of their attributes. and I need to find the best match from a function under given scenarios out of these objects. In future these objects might increase as well. Quite similar to the way we have Color class in awt. we have some static color objects in the class with diff rgb values. But in my case say, I need to chose the suitable color out of these static ones based on certain criteria. So should I keep them in an arrayList or enum or keep them as static vars as in case of Colors. because I will need to parse through all of them and decide upon the best match. so I need them in some sort of collection. But in future if I need to add another type I will have to modify the class and add another list.add(object) call for this one and then it will violate the open-close principle. How should I go about it ?

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• Dynamic Query Generation : suggestion for better approaches

  - by Gaurav Parmar

  I am currently designing a functionality in my Web Application where the verified user of the application can execute queries which he wishes to from the predefined set of queries with where clause varying as per user's choice. For example,Table ABC contains the following Template query called SecretReport "Select def as FOO, ghi as BAR from MNO where " SecretReport can have parameters XYZ, ILP. Again XYZ can have values as 1,2 and ILP can have 3,4 so if the user chooses ILP=3, he will get the result of the following query on his screen "Select def as FOO, ghi as BAR from MNO where ILP=3" Again the user is allowed permutations of XYZ / ILP My initial thought is that User will be shown a list of Report names and each report will have parameters and corresponding values. But this approach although technically simple does not appear intuitive. I would like to extend this functionality to a more generic level. Such that the user can choose a table and query based on his requirements. Of course we do not want the end user to take complete control of DB. But only tables and fields that are relevant to him. At present we are defining what is relevant in the code. But I want the Admin to take over this functionality such that he can decide what is relevant and expose the same to the user. On user's side it should be intuitive what is available to him and what queries he can form. Please share your thoughts what is the most user friendly way to provide this feature to the end user.

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• Keeping a domain model consistent with actual data

  - by fstuijt

  Recently domain driven design got my attention, and while thinking about how this approach could help us I came across the following problem. In DDD the common approach is to retrieve entities (or better, aggregate roots) from a repository which acts as a in-memory collection of these entities. After these entities have been retrieved, they can be updated or deleted by the user, however after retrieval they are essentially disconnected from the data source and one must actively inform the repository to update the data source and make is consistent again with our in-memory representation. What is the DDD approach to retrieving entities that should remain connected to the data source? For example, in our situation we retrieve a series of sensors that have a specific measurement during retrieval. Over time, these measurement values may change and our business logic in the domain model should respond to these changes properly. E.g., domain events may be raised if a sensor value exceeds a predefined threshold. However, using the repository approach, these sensor values are just snapshots, and are disconnected from the data source. Does any of you have an idea on how to solve this following the DDD approach?

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• Comparing two strings in excel, add value for common variables

  - by overtime

  I'm comparing two large datasets containing strings in excel. Column A contains the numbers 1-1,000,000. Column B contains 1,000,000 strings, neatly organized in the desired order. Column C contains 100,000 randomly organized strings, that have identical values somewhere in column B. Example: A B C D 1 String1 String642 2 String2 String11 3 String3 String8000 4 String4 String78 What I'd like to do is find duplicate values in columns B and C then output the Column A value that corresponds with the string in Column C into Column D. Desired Output: A B C D 1 String1 String642 642 2 String2 String11 11 3 String3 String8000 8000 4 String4 String78 78

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• Does MS Access update the data on the clipboard from a query when the data in the database changes?

  - by leeand00

  I was just debugging a macro in MS Access, and when it hit the breakpoint ran a query and I copied the data from it to the clipboard. Some of the values were null before stepping to the next step, then I ran the next step which ran a query which changed the data I had on the clipboard. I then pasted the data and the values that were null before had been changed by the query...leading to a rather large WTF on my part when I pasted the data. So my question is, does MSAccess update the data on the clipboard when it changes in the database? That's the only explanation I have for what occurred there.

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• Add & Show data in Java ArrayList [closed]

  - by Kaidul Islam Sazal

  I have a class inside a main class : static class Graph{ static int u, v, cost; } I have instantiated an arraylist of the class: static List<Graph> g = new ArrayList<Graph>(); And I insert several values into the arraylist like this: Scanner input = new Scanner(System.in); for (int i = 0; i < edge_no; i++) { Graph e = new Graph(); e.u = input.nextInt(); e.v = input.nextInt(); e.cost = input.nextInt(); g.add(e); } And I print it like this: for (int i = 0; i < edge_no; i++) { System.out.println(g.get(i).u + " " + g.get(i).v + " " + g.get(i).cost); } But the problem is that, when I print it, only the last value is shown all the time.It seems that, all the previous values are over-written with it. Input : 1 2 5 1 3 8 2 3 9 Output: 2 3 9 2 3 9 2 3 9 Expected output is just like the input.But I can't fix the problem as I am novice in java.

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• Using Queries with Coherence Read-Through Caches

  - by jpurdy

  Applications that rely on partial caches of databases, and use read-through to maintain those caches, have some trade-offs if queries are required. Coherence does not support push-down queries, so queries will apply only to data that currently exists in the cache. This is technically consistent with "read committed" semantics, but the potential absence of data may make the results so unintuitive as to be useless for most use cases (depending on how much of the database is held in cache). Alternatively, the application itself may manually "push down" queries to the database, either retrieving results equivalent to querying the cache directly, or may query the database for a key set and read the values from the cache (relying on read-through to handle any missing values). Obviously, if the result set is too large, reading through the cache may cause significant thrashing. It's also worth pointing out that if the cache is asynchronously synchronized with the database (perhaps via database change listener), that an application may commit a transaction to the database, then generate a key set from the database via a query, then read cache entries through the cache, possibly resulting in a race condition where the application sees older data than it had previously committed. In theory this is not problematic but in practice it is very unintuitive. For this reason it often makes sense to invalidate the cache when updating the database, forcing the next read-through to update the cache.

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