As a native speaker, this sounds incorrect to me:      The company does not permit to distribute the modified materials.   But, I can't explain why it is not so to a non-native speaker. To me, it should be:     The company does not permit distribution of modified materials.   Am I right? What is the grammatical explanation?
Some verbs are followed by ing, e.g. I enjoy swimming. We can't say I enjoy to swim. Likewise, some verbs are followed by to, e.g. I decided to make a plan.   Which particular verbs are followed by ing and to? Can you please provide a list for that?  Moreover, which verbs can be followed by both without having the meaning changed?
I would like to know if it is possible to not get penalised by google for changing the subject of a category entirely. I would like to swap a category that I have built on a webpage, for one with a more relevant (as of now) topic. Changing description, content and title etc... would this destroy my SEO? It has amassed backlinks of great quantity and quality over the course of time and I seriously would not like to have them wasted or passed with internal links as the page itself is invaluable. Assume anchors to my webpage were all &quot;&lt;empty&gt;&quot; for convenience purposes. They are nothing particularly descriptive. Why don't electrons crash into the nuclei they "orbit"? I'm having trouble understanding the simple "planetary" model of the atom that I'm being taught in my basic chemistry course.   In particular,    I can't see how a negatively charged electron can stay in "orbit" around a positively charged nucleus. Even if the electron actually orbits the nucleus, wouldn't that orbit eventually decay?  I can't reconcile the rapidly moving electrons required by the planetary model with the way atoms are described as forming bonds. If electrons are zooming around in orbits, how do they suddenly "stop" to form bonds.     I understand that certain aspects of quantum mechanics  to address these problems, and that there are  of atoms. My question here is whether the planetary model itself addresses these concerns in some way (that I'm missing) and whether I'm right to be uncomfortable with it. Power series is locally normally convergent in its convergence radius $B(0,R)$ Example of $f,g: [0,1]\to[0,1]$ and Riemann-integrable, but $g\circ f$ is not? Are battery packs allowed in hand luggage? Describe the set of points on the complex plane... How to install a QGIS plugin when offline? Due to various IT policies at my workplace, QGIS is installed on a machine that is not connected to the internet. I wish to install a couple of QGIS plugins on this system.  I have downloaded the required plugins from . How do I install them in QGIS? I've noticed an interesting phenomenon in the user interfaces of many famous applications, they're moving away from the glossy complex to a more dull and bare minimum design.  Why the sudden change? It also appears that most of these companies have adopted this design around the same time, was that linked to some new study?  Examples: What are the differences between "=" and "<-" assignment operators in R? How do I technobabble without sounding like technobabble? Eclipse was working as good as anything on 14.04. I did a clean install of 16.04 and installed Eclipse. But it runs a Java program only once after which it just hangs during subsequent attempts before I remove and reinstall it. I have tried many things, since in the beginning I needed CDT as well. Right now, I just want to remove everything related to eclipse and do a fresh install (remove all the configs and dependencies). Please note that I used Eclipse installer to install Eclipse and the eclipse icon image is also not appearing (the default ubuntu ? is appearing). ssh master - execute su remotely I have a server S that I need to connect to.  I'm connecting to S as user asdf with control master and after that I perform some stuff:  ssh -N -f -M -o ControlPath=$SSHSOCKET ${USER}@${IP} -p ${PORT} -i id_rsa ssh -to ControlPath=$SSHSOCKET ${USER}@${IP} -p ${PORT} "su -c whoami &amp;&amp; hostname &amp;&amp; exit"   It works as expected, but second line asks me  for password.  I am trying such fix:  echo 'qwerty' | ssh -t -to ControlPath=$SSHSOCKET ${K3_USER}@${IP} -p ${PORT} "su -c whoami &amp;&amp; hostname &amp;&amp; exit"   but it gets even worse:  muxserver_accept_control: tcgetattr: Inappropriate ioctl for device tcgetattr: Inappropriate ioctl for device Password:   For me, it's mandatory to ssh as asdf first. I also can't make any other ssh control master connections. I also can't modify any config on the target machine.  I just need to switch to root via ssh somehow. Any ideas ? For-each over an array in JavaScript Does being denied entry to a country affect future travel to other countries? I was denied entry to India due to a visa technicality. I was advised by organisation I was travelling with to get tourist visa when I actually needed miscellaneous visa. Will this affect future travel to other countries if I have been refused once by a country, or if I want to re-enter India? (a) $S_k=\{A\subset\mathbb{N}: |A|=k\}$ for $k\in\mathbb{N}$  (b) $S = \bigcup_{k=1}^\infty S_k$   Work: For (a), I am not too sure about what approach I should use. I think finding a bijective function between the $S_k$ and $\mathbb{N}$ is hard to do . I also thought about using the Schroeder-Bernstein theorem and find injective functions $f:\mathbb{N}\rightarrow S_k$and $g:S_k\rightarrow\mathbb{N}$ in order to prove that $S_k$ and $\mathbb{N}$ are numerically equivalent. However, I have a hard time finding and proving these injective functions. I haven't really looked at (b) as I have yet to complete (a). Why do non-hydrogen atomic orbitals have the same degeneracy structure as hydrogen orbitals? NEWID() In Joined Virtual Table Causes Unintended Cross Apply Behavior My actual work query was an inner join, but this simple example with cross join seems to nearly always reproduce the problem.  SELECT * FROM (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A ) CROSS JOIN (     SELECT NEWID() TEST_ID ) BB ( B )   With my inner join I had many rows for which I added to each a GUID using the NEWID() function, and for about 9 out of 10 such rows the multiplication with the 2-row virtual table produced the expected results, just 2 copies of the same GUID, while 1 out of 10 would produce different results. This was unexpected to say the least and gave me a really hard time trying to find this bug in my test data generation script.  If you take a look at the following queries using as well non-deterministic getdate and sysdatetime functions, you won't see this, I don't anyway-I always see the same datetime value in both final result rows.  SELECT * FROM (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A ) CROSS JOIN (     SELECT GETDATE() TEST_ID ) BB ( B )  SELECT * FROM (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A ) CROSS JOIN (     SELECT SYSDATETIME() TEST_ID ) BB ( B )   I'm currently using SQL Server 2008 and my work around for now is to load my rows with GUIDs into a table variable before finishing out my random data generation script. Once I have them as values in a table as opposed to virtual table, the problem goes away.  I have a workaround, but I'm looking for the ways to workaround without actual tables or table variables.  While writing this I tried without success these possibilities: 1) placing the newid() into a nested virtual table:  SELECT * FROM (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A ) CROSS JOIN (     SELECT TEST_ID     FROM (         SELECT NEWID() TEST_ID     ) TT ) BB ( B )   2) wrapping the newid() within a cast expression such as:  SELECT CAST(NEWID() AS VARCHAR(100)) TEST_ID   3) reversing the order of appearance of the virtual tables within the join expression  SELECT * FROM (     SELECT NEWID() TEST_ID ) BB ( B ) CROSS JOIN (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A )   4) using uncorrelated cross apply  SELECT * FROM (     SELECT NEWID() TEST_ID ) BB ( B ) CROSS APPLY (     SELECT 1 UNION ALL     SELECT 2 ) AA ( A )   Just before finally posting this question, now I tried this with success it seems, a correlated cross apply:  SELECT * FROM (     SELECT NEWID() TEST_ID ) BB ( B ) CROSS APPLY (     SELECT A     FROM (         SELECT 1 UNION ALL         SELECT 2     ) TT ( A )     WHERE BB.B IS NOT NULL ) AA ( A )   Anyone have any other more elegant, simpler workaround? I really don't want to use cross apply or correlation for a simple row multiplication if I don't have to. How do I prevent yum from updating a particular RPM? For certain reasons I have to keep a slightly older version of a particular RPM installed on my box (Fedora 11). The problem is that every time I do a package update yum (or one of its GUI equivalents) wants to update this RPM to the latest version, which is annoying - especially when I update it by mistake.  Is there a way to 'pin' this version so that yum knows to never try and update it? Consider a block cipher with a key of size 128 bits but a small block size, say 32 bits.  Is this kind of block cipher secure?  I would like to know to what extent I can use a small block cipher, like a 32 bit block cipher. What are the constraints so that the use is acceptable in a real life application.  For instance, if we use a one-time key, that is, to encrypt only one message. Besides, the message could be small.  Suppose that when we want so send one file, we perform a key agreement so that we use the key for one message. This scenario is not efficient, but the CPA find-then-guess game is not adequate in this case. I am trying to get this trigger to work but it is giving me an error and I am not able to figure out why. The error I am getting is "attempt to de-reference a null object)  Why trigger? We have a Destinations object which is linked to Supplier products object via a lookup relationship. There are two types of supplier products(marketplace and curated) We want to count the number of live Supplier products and put them in a separate fields(live counts for each type).  I have gotten so far to actually count the number of live products and it is giving me an error. Can any one help? I am posting the code below  Trigger code :   trigger NoOfLiveProducts on Supplier_Product__c (after insert, after Delete, after update, after undelete) {       set&lt;string&gt; destinationids = new set&lt;string&gt;();      if(trigger.isInsert) {         for(Supplier_product__c products : Trigger.new) {             destinationids.add(products.Destination__c);         }     } else if(trigger.isDelete) {         for(Supplier_product__c products : Trigger.old) {             destinationids.add(products.Destination__c);         }     }else if(trigger.isUnDelete) {         for(Supplier_product__c products : Trigger.new){             destinationids.add(products.Destination__c);         }      } else if(trigger.isUpdate) {         for(Supplier_product__c products : Trigger.new) {             destinationids.add(products.Destination__c);         }     }      if(destinationids.size() &gt; 0){         Productcounter pc = new Productcounter();         pc.updateproductCount(destinationids);     }    }   Class code :  public class Productcounter {      public void updateproductcount(set&lt;string&gt; productIDs) {           if(productIDs == null){                return;         }          if(productIDs.size() == 0){             return;         }           list&lt;Supplier_Product__c&gt; ProductList = new list&lt;Supplier_Product__c&gt;();         ProductList = [Select ID,Destination__c                     From Supplier_Product__c                     Where Destination__c = :productIDs];          integer totalCount;         map&lt;string, integer&gt; DestinationIDToProductCountMap = new map&lt;string, integer&gt;();                for(Supplier_product__c ProductItem : ProductList){             if(DestinationIDToProductCountMap.containsKey(ProductItem.Destination__c)){                 totalCount = DestinationIDToProductCountMap.get(ProductItem.Destination__c);             }else{                 totalCount = 0;             }             totalCount += 1;             DestinationIDToProductCountMap.put(ProductItem.Destination__c, totalCount);         }          list&lt;Destination__c&gt; DestinationUpdateList = new list&lt;Destination__c&gt;();         Destination__c DestinationTemp;         for(string ProductID : DestinationIDToProductCountMap.keySet()){             DestinationTemp.ID = ProductID;             DestinationTemp.No_of_Live_Curated_Products__c = DestinationIDToProductCountMap.get(ProductID);             DestinationUpdateList.add(DestinationTemp);         }         if(DestinationUpdateList.size() &gt; 0){             update DestinationUpdateList;         }           }           }