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• Some Insight on the Field of Knowledge Representations and Reasoning

  - by picmate

  I started following an MS in computer sciences after about two years of work for a software company. I worked primarily in data warehousing and business intelligence related software development during my previous occupation. There is a high chance for me to select a research in knowledge representations, ontologies and reasoning, as there are no other research available in any other interesting fields, such as pattern recognition and navigation. I developed an interest towards knowledge representation with what I learnt from the courses I am taking currently. But I do not have a deep understanding of it in terms of which areas such a field would have an impact in a real life scenario, and how it will help me when I am hunting for a job in the near future. Some thought about this would be greatly appreciated.

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• What is this error Found widget <g:ListBox class='dropdownbx' name='deleteDigits' ui:field='deletedi

  - by arinte

  I get this error when I run my Gwt app Found widget in an HTML context Here is a snippet of the xml that it complains about: ... `<g:HTML ui:field="localPanel">` `<fieldset>` `<legend>Local</legend>` `<label for="btn" >BTN:</label><input type="text" ui:field="btn" class="txtbx numeric" maxlength="10" name='btn'/>` `<label for="stdprt">SDT PRT:</label><input type="text" ui:field="stdprt" class="txtbx" readonly="readonly" name='stdPrt'/>` `<label for="rateArea">Rate Area:</label><input type="text" ui:field="ratearea" class="txtbx" readonly="readonly" name='rateArea'/>` `<br/>` `<label for="deleteDigits">Delete Digits:</label><g:ListBox ui:field='deletedigs' class="dropdownbx" name='deleteDigits'/>` `</fieldset>` `</g:HTML>` `<g:Button ui:field="submit2">Submit</g:Button>` `</g:HTMLPanel>` </ui:UiBinder>

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• How to select and deselect checkbox field into the GridView

  - by SAMIR BHOGAYTA

  //JavaScript function for Select and Deselect checkbox field in GridView function SelectDeselectAll(chkAll) { var a = document.forms[0]; var i=0; for(i=0;i lessthansign a.length;i++) { if(a[i].name.indexOf("chkItem") != -1) { a[i].checked = chkAll.checked; } } } function DeselectChkAll(chk) { var c=0; var d=1; var a = document.forms[0]; //alert(a.length); if(chk.checked == false) { document.getElementById("chkAll").checked = chk.checked; } else { for(i=0;i lessthansign a.length;i++) { if(a[i].name.indexOf("chkItem") != -1) { if(a[i].checked==true) { c=1; } else { d=0; } } } if(d != 0) { document.getElementById("chkAll").checked =true; } } } //How to use this function asp:TemplateField input id="Checkbox1" runat="server" onclick="javascript:SelectDeselectAll(this);" type="checkbox" / /HeaderTemplate /asp:GridView columns asp:TemplateFieldheadertemplate input id="chkAll" runat="server" onclick="javascript:SelectDeselectAll(this);" type="checkbox" / /HeaderTemplate

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• Some Insight on the Field of Knowledge Representations

  - by picmate

  I started following an MS in computer sciences after about two years of work for a software company. I worked primarily in data warehousing and business intelligence related software development during my previous occupation. There is a high chance for me to select a research in knowledge representations, ontologies and reasoning, as there are no other research available in any other interesting fields, such as pattern recognition and navigation. I developed an interest towards knowledge representation with what I learnt from the courses I am taking currently. But I do not have a deep understanding of it in terms of which areas such a field would have an impact in a real life scenario, and how it will help me when I am hunting for a job in the near future. Some thought about this would be greatly appreciated.

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• django related_name for field clashes.

  - by Absolute0

  I am getting a field clash in my models: class Visit(models.Model): user = models.ForeignKey(User) visitor = models.ForeignKey(User) Error: One or more models did not validate: profiles.visit: Accessor for field 'user' clashes with related field 'User.visit_set'. Add a related_name argument to the definition for 'user'. profiles.visit: Accessor for field 'visitor' clashes with related field 'User.visit_set'. Add a related_name argument to the definition for 'visitor'. what would be a sensible 'related_field' to use on visitor field? This model basically represents the visits that take place to a particular user's profile. Also should I replace any of the ForeignKey's with a ManyToManyField? The logic is a bit confusing. Edit: This seems to fix it, but I am unsure if its what I want. :) class Visit(models.Model): user = models.ForeignKey(User) visitor = models.ForeignKey(User, related_name='visitors')

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• Drupal 7: Documents as a node/block/field

  - by WernerCD

  I'm working on my first Drupal site. I've progressed in learning the basics . I still have a lot to learn tho. Using FileViewer I can load a PDF saved in a field, for view content of various types. I haven't found something that does the same for Word Docs, Excel, PDF, etc. Does anyone know of something that works in Drupal 7 to load documents other than PDF like FileViewer does inside a browser? Or like Scribd does (Scribd is hosted. I am behind a firewall with limited access for users. So I don't want to use a Scribd like service.)

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• gtk_widget_grab_focus() jumping to next field automatically?

  - by Ravi Raj

  I am creating a 'C' project with glade and gtk. I want a focus on a gtkentry field naming txt_abc and so I called the function: gtk_widget_grab_focus (txt_abc); There is another gtkentry widget just after txt_abc widget naming txt_def. My problem is instead of getting focus on txt_abc widget, the cursor is automatically being focused on txt_def widget, when I am running the application. One more thing, when I am setting the focus at txt_def widget by calling the code: gtk_widget_grab_focus (txt_def); the control is again being focused on the next widget on the window, i.e. txt_name. I want the focus exactly on the widget I am setting the grab signal. How to resolve this problem.

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• Checking a record is due based on the 'occuring' field

  - by andy

  I have records that have dates against them and an occurring field that contains none,yearly and monthly id status note date last_updated occurring 1 open --- 01/01/2011 01/02/2010 yearly 2 open --- 05/05/2011 03/05/2011 monthly 3 open --- 06/06/2011 05/06/2011 none Now I need to be able to check if a record is due (the date set has passed) which works perfect if occurring is set to none but I'm unsure of how to approach it when it's set to yearly or monthly (IE: This day in the year/month has passed) So with the above records, if I had a method on the record called due? providing the status is 'open' it needs to return true every year when it's passed that date if it's not been updated within the year yet. I apologise if this is confusing but it's melting my brain just trying to think of it, let alone put it into words.

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• Adding a prefix or postfix to a Word 2013 quotation source

  - by user2690527

  I am using the German version of Word 2013, so I am not absolutely sure, if "quotation source" is the term being used in the English version. I am talking about the automatic text field, one can get via "References" (German: "Verweise"), "Insert quotation" (German: "Zitat einfügen"). Then one gets a drop down menu with all the entries from the biobliography, one can pick one and then an automatic text field is inserted into the text. After it is hopefully clear what I am talking about, here is the question: I choosed the citation style "ISO 690" that generates labels of the pattern "(author+year)" in round parentheses. Sometimes I have to append a prefix or postfix to the label, but this prefix/postfix must go into the parantheses. Is there any way how I can do this? For example, I can add page numbers to the end of a quotation label via a special dialog box that appears after a right click onto the text field and choosing "Edit quote" (German: "Zitat bearbeiten"). But there are a lot more cases of optional pre-/postfixes than page numbers. I am looking for a way to add general pre-/postfixes.

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• To display the field values submitted with AJAX [closed]

  - by work

  Here is the code:I want to post the field values entered in this code to the page ajaxpost.php using Ajax and then do some operations there. What would be code required to be written in ajaxpost.php <html> <head> <script type="text/javascript"> function loadXMLDoc() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("myDiv").innerHTML=xmlhttp.responseText; } } var zz=document.f1.dd.value; //alert(zz); var qq= document.f1.cc.value; xmlhttp.open("POST","ajaxpost.php",true); xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xmlhttp.send("dd=zz&cc=qq"); } </script> </head> <body> <h2>AJAX</h2> <form name="f1"> <input type="text" name="dd"> <input type="text" name="cc"> <button type="button" onclick="loadXMLDoc()">Request data</button> <div id="myDiv"></div> </form> </body> </html>

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• Camera field of view: 3D projections & trigonometry

  - by Thomas O

  Okay, here goes. I have a camera at (Xc, Yc, Zc.) The Xc and Yc coordinates are latitude/longitude, and the Zc coordinate is an altitude in metres. I have a point at (Xp, Yp, Zp) and a field of view on the camera (Th1, Th2) - where Th1 is horizontal FOV and Th2 is vertical FOV. Given this information, I'd like to: test if the point is visible (i.e. in the camera's FOV) project the point as the camera would see it I've figured out already that the camera's horizontal view at any given distance is tan(Th1) * distance, but I don't know how to test if the point is visible. Accuracy is not critical. I would prefer a simple solution over a complicated solution, if it works well enough. The computations will be performed by a small microcontroller, which isn't very fast at things like trig functions. P.S. this is not homework, I'm doing this for some game development. It will be integrated with the real world, hence the latitude/longitude/altitude. It involves flying real RC planes through virtual hoops (or chasing virtual targets), so I have to project the positions of these hoops on a display.

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• Custom field names in Rails error messages

  - by Madhan ayyasamy

  The defaults in Rails with ActiveRecord is beautiful when you are just getting started and are created everything for the first time. But once you get into it and your database schema becomes a little more solidified, the things that would have been easy to do by relying on the conventions of Rails require a little bit more work.In my case, I had a form where there was a database column named “num_guests”, representing the number of guests. When the field fails to pass validation, the error messages is something likeNum guests is not a numberNot quite the text that we want. It would be better if it saidNumber of guests is not a numberAfter doing a little bit of digging, I found the human_attribute_name method. You can override this method in your model class to provide alternative names for fields. To change our error message, I did the followingclass Reservation ... validates_presence_of :num_guests ... HUMAN_ATTRIBUTES = { :num_guests = "Number of guests" } def self.human_attribute_name(attr) HUMAN_ATTRIBUTES[attr.to_sym] || super endendSince Rails 2.2, this method is used to support internationalization (i18n). Looking at it, it reminds me of Java’s Resource Bundles and Spring MVC’s error messages. Messages are defined based off a key and there’s a chain of look ups that get applied to resolve an error’s message.Although, I don’t see myself doing any i18n work in the near-term, it is cool that we have that option now in Rails.

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• Create Adjustable Depth of Field Photos with a DSLR

  - by Jason Fitzpatrick

  If you’re fascinating by the Lytro camera–a camera that let’s you change the focus after you’ve taken the photo–this DSLR hack provides a similar post-photo focus processing without the $400 price tag. Photography tinkers at The Chaos Collective came up with a clever way of mimicking the adjustable depth-of-field adjustment effect from the Lytro camera. The secret sauce in their technique is setting the camera to manual focus and capturing a short 2-3 second video clip while they rotate the focus through the entire focal range. From there, they use a simple applet to separate out each frame of the video. Check out the interactive demo below: Anywhere you click in the photo shifts the focus to that point, just like the post processing in the Lytro camera. It’s a different approach to the problem but it yields roughly the same output. Hit up the link below for the full run down on their technique and how you can get started using it with your own video-enabled DLSR. Camera HACK: DOF-Changeable Photos with an SLR [via Hack A Day] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• How do I pass a custom field to a hook (Invision Power Board [ipb] / PHP)

  - by Julian Young

  A long shot but here's hoping someone has some experience coding PHP hooks for Invisions Power Board forum. I'm attempting to code a status addition and the PHP works fine on it's own, it's the passing of the IPB's reference to my hook that is the issue. I.E. You setup a custom field in your forum for MSN Username, then from within a skin / template hook you pass the custom field to the hook and then use your PHP code to check on the status. Here is the IPB skin code I am hooking into on Global-userInfoPane... <if test="authorcfields:|:$author['custom_fields'] != """> <foreach loop="customFieldsOuter:$author['custom_fields'] as $group => $data"> <foreach loop="customFields:$author['custom_fields'][ $group ] as $field"> <if test="$field != ''"> <li> {$field} </li> </if> </foreach> </foreach> </if> Although I could easily add my own skin hook here. i.e. <if test="myHookHere:|:1===1"></if> Literally all I need is a single custom field entry from here passed to my hook. If I query every member when the hook is run then that will result in many extra sql queries per page view. All I want to do is pass that specific custom field to the hook... i.e. myHookHere( $customfield['msn_username'] ) Is this possible? How do you reference the customfield? Can I execute pure PHP from here? Appreciate anyone that can help! I tried the official invision forums but not had much luck.

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• Variable field in a constraint annotation

  - by Javi

  Hello, I need to create a custom constraint annotation which can access the value of another field of my bean. I'll use this annotation to validate the field because it depends on the value of the other but the way I define it the compiler says "The value for annotation attribute" of my field "must be a constant expression". I've defined it in this way: @Target(ElementType.FIELD) @Retention(RetentionPolicy.RUNTIME) @Constraint(validatedBy=EqualsFieldValidator.class) @Documented public @interface EqualsField { public String field(); String message() default "{com.myCom.annotations.EqualsField.message}"; Class<?>[] groups() default {}; Class<? extends Payload>[] payload() default {}; } public class EqualsFieldValidator implements ConstraintValidator<EqualsField, String>{ private EqualsField equalsField; @Override public void initialize(EqualsField equalsField) { this.equalsField = equalsField; } @Override public boolean isValid(String thisField, ConstraintValidatorContext arg1) { //my validation } } and in my bean I want something like this: public class MyBean{ private String field1; @EqualsField(field=field1) private String field2; } Is there any way to define the annotation so the field value can be a variable? Thanks

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• Calculate Age using Date Field

  - by BRADINO

  So if you have a database table that has DOB borthdays as date fields, this is an easy way to query that table based on age parameters. The following examples assume that the date of birth date field is dob and the table name is people. Find people who are 30 years old SELECT DATE_FORMAT( FROM_DAYS( TO_DAYS( now( ) ) - TO_DAYS( `dob` ) ) , '%Y' ) +0 AS `age` FROM `people` HAVING `age` = 30 Find people who are 31-42 years old SELECT DATE_FORMAT( FROM_DAYS( TO_DAYS( now( ) ) - TO_DAYS( `dob` ) ) , '%Y' ) +0 AS `age` FROM `people` HAVING `age`>= 31 AND `age` <= 42 Find oldest person SELECT MAX(DATE_FORMAT( FROM_DAYS( TO_DAYS( now( ) ) - TO_DAYS( `dob` ) ) , '%Y' ) +0) AS `age` FROM `people` Find youngest person SELECT MIN(DATE_FORMAT( FROM_DAYS( TO_DAYS( now( ) ) - TO_DAYS( `dob` ) ) , '%Y' ) +0) AS `age` FROM `people`

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• ODEE Green Field (Windows) Part 2 - WebLogic

  - by AndyL-Oracle

  Welcome back to the next installment on how to install Oracle Documaker Enterprise Edition onto a green field environment! In my previous post, I went over some basic introductory information and we installed the Oracle database. Hopefully you've completed that step successfully, and we're ready to move on - so let's dive in! For this installment, we'll be installing WebLogic 10.3.6, which is a prerequisite for ODEE 12.3 and 12.2. Prior to installing the WebLogic application server, verify that you have met the software prerequisites. Review the documentation – specifically you need to make sure that you have the appropriate JDK installed. There are advisories if you are using JDK 1.7. These instructions assume you are using JDK 1.6, which is available here. The first order of business is to unzip the installation package into a directory location. This procedure should create a single file, wls1036_generic.jar. Navigate to and execute this file by double-clicking it. This should launch the installer. Depending on your User Account Control rights you may need to approve running the setup application. Once the installer application opens, click Next. Select your Middleware Home. This should be within your ORACLE_HOME. The default is probably fine. Click Next. Uncheck the Email option. Click Yes. Click Next. Click Yes Click Yes and Yes again (yes, it’s quite circular). Check that you wish to remain uninformed and click Continue. Click Custom and Next. Uncheck Evaluation Database and Coherence, then click Next. Select the appropriate JDK. This should be a 64-bit JDK if you’re running a 64-bit OS. You may need to browse to locate the appropriate JAVA_HOME location. Check the JDK and click Next. Verify the installation directory and click Next. Click Next. Allow the installation to progress… Uncheck Run Quickstart and click Done.  And that's it! It's all quite painless - so let's proceed on to set up SOA Suite, shall we? 

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• ODEE Green Field (Windows) Part 3 - SOA Suite

  - by AndyL-Oracle

   So you're still here, are you? I'm sure you're probably overjoyed at the prospect of continuing with our green field installation of ODEE. In my previous post, I covered the installation of WebLogic - you probably noticed, like I did, that it's a pretty quick install. I'm pretty certain this had everything to do with how quickly the next post made it to the internet! So let's dig in. Make sure you've followed the steps from the initial post to obtain the necessary software and prerequisites! Unpack the RCU (Repository Creation Utility). This ZIP file contains a directory (rcuHome) that should be extracted into your ORACLE_HOME. Run the RCU – execute rcuHome/bin/rcu.bat. Click Next. Select Create and click Next. Enter the database connection details and click Next – any failure to connection will show in the Messages box. Click Ok Expand and select the SOA Infrastructure item. This will automatically select additional required components. You can change the prefix used, but DEV is recommended. If you are creating a sandbox that includes additional components like WebCenter Content and UMS, you may select those schemas as well but they are not required for a basic ODEE installation. Click Next. Click OK. Specify the password for the schema(s). Then click Next. Click Next. Click OK. Click OK. Click Create. Click Close. Unpack the SOA Suite installation files into a single directory e.g. SOA. Run the installer – navigate and execute SOA/Disk1/setup.exe. If you receive a JDK error, switch to a command line to start the installer. To start the installer via command line, do Start?Run?cmd and cd into the SOA\Disk1 directory. Run setup.exe –jreLoc < pathtoJRE >. Ensure you do not use a path with spaces – use the ~1 notation as necessary (your directory must not exceed 8 characters so “Program Files” becomes “Progra~1” and “Program Files (x86)” becomes “Progra~2” in this notation). Click Next. Select Skip and click Next. Resolve any issues shown and click Next. Verify your oracle home locations. Defaults are recommended. Click Next. Select your application server. If you’ve already installed WebLogic, this should be automatically selected for you. Click Next. Click Install. Allow the installation to progress… Click Next. Click Finish. You can save the installation details if you want. That should keep you satisfied for the moment. Get ready, because the next posts are going to be meaty! 

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• jquery: validate that text field is numeric

  - by George Johnston

  I have simple issue -- I would like to check a field to see if it's numeric if it is not blank. I'm not using any additional plugins, just jQuery. My code is as follows: if($('#Field').val() != "") { if($('#Field').val().match('^(0|[1-9][0-9]*)$')) { errors+= "Field must be numeric.<br/>"; success = false; } } ...It doesn't seem to work. Where am I going wrong? Thanks, George

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• Database Memory :: MySql Innodb how much storage memory allocation for empty field vs not empty fie

  - by Yosef

  Hi, I new in database, and dont know how and when mysql allocate memory space. In MySql Innodb how much storage memory allocation for empty field (no string inserted) vs not empty field? Other form of my question: When memory allocated space In MySql Innodb for varchar/text field in time of table creation or when data inserted inside field? Thank you, Yosef

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• ADD COLUMN to sqlite db IF NOT EXISTS - flex/air sqlite?

  - by Adam

  I've got a flex/air app I've been working on, it uses a local sqlite database that is created on the initial application start. I've added some features to the application and in the process I had to add a new field to one of the database tables. My questions is how to I go about getting the application to create one new field that is located in a table that already exists? this is a the line that creates the table stmt.text = "CREATE TABLE IF NOT EXISTS tbl_status ("+"status_id INTEGER PRIMARY KEY AUTOINCREMENT,"+" status_status TEXT)"; And now I'd like to add a status_default field. thanks! Thanks - MPelletier I've add the code you provided and it does add the field, but now the next time I restart my app I get an error - 'status_default' already exists'. So how can I go about adding some sort of a IF NOT EXISTS statement to the line you provided?

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• How can I can insert the contents of a file into another file right before a specific line

  - by jelbatnigi

  Hi, How can I can insert the contents of a file into another file right before a specific line using sed. example I have file1.xml that has the following: <field tagRef="376"> </field> <field tagRef="377"> </field> <field tagRef="58"> </field> <group ref="StandardMessageTrailer" required="true"/> </fieldList> and file2.xml has the following: <field tagRef="9647"> <description>Offset</description> </field> <field tagRef="9648"> <description>Offset Units/Direction</description> </field> <field tagRef="9646"> <description>Anchor Price</description> </field> how can i insert the contents of file2 into file1 just before so it will look like this: <field tagRef="376"> </field> <field tagRef="377"> </field> <field tagRef="58"> </field> <field tagRef="9647"> <description>Offset</description> </field> <field tagRef="9648"> <description>Offset Units/Direction</description> </field> <field tagRef="9646"> <description>Anchor Price</description> </field> <group ref="StandardMessageTrailer" required="true"/> </fieldList> I know how to insert after that line using sed 'group ref="StandardMessageTrailer"/r file2.xml' file1.xml newfile.xml but I want to insert it before. appreciate the help

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• ReadOnly Property in Custom Column Types in Sharepoint

  - by Ray Booysen

  Hey all I'm creating a custom column in a feature for Sharepoint. It is essentially this: <Field Type="Integer" ID="<insert guid here>" ReadOnly="true" Name="xxx" DisplayName="XXX" Group="YYY" /> When the field is deployed and attached to a content type, the content type shows no instance of this field being attached. The documentation about ReadOnly is a bit vague but definitely states that the column will be available for viewing in a View. However, when I create a view it is not available. The moment I remove ReadOnly from the field, it is available on the content type without any problems. Any ideas?

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• Trying to Nullify Django model fields with method where model and fields are parameters

  - by Johnny4000

  I'm trying to write a method like the below where a list of fields (a subset of all the fields) is passed in as a parameter and has their column values set to null. I would be happy of I could get a method with just the fields as a parameter like below, but having the model as a parameter would be even better. from my_project.my_app.models import MyModel def nullify_columns (self, null_fields): field_names = MyModel._meta.get_all_field_names() for field in field_names: if field in null_fields: # The below line does not work because I'm not sure how to # dynamically assign the field name. MyModel.objects.all().update( (MyModel.get_field(field).column) = None) Right now I have something like if 'column1' in list_of_fields: MyModel.objects.all().update(column1 = None) if 'column2' in list_of_fields: MyModel.objects.all().update(column2 = None) etc. which is horrible, but works.

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• Word 2013: Get the page number for the previous page

  - by Mike Anthony

  I'm trying to accomplish something very simple in Word 2013, but the feature does not seem to be available, nor can I work it out with field codes. I simply want to include, on multiple pages, "continued from page n". In terms of field codes, I have tried this: { = PAGE - 1 \* MERGEFORMAT } It just tells me that PAGE is not a defined bookmark. Is there any way that this can be done? Edit: Per documentation I found somewhere, I also tried this - but with no luck: { = { PAGE } - 1 } This just threw Syntax Error, { back, which leads me to assume that it's incompatible with newer versions of Word.

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