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concTCP.go requires a single command line argument, which is the port number that it will listen to. Occasionally, authors may disregard this requirement, submitting the same paper to multiple journals or submitting multiple papers based on the same research. Be Realistic About the Goals for Your Case Study. Note that there may still be disagreement concerning the appropriate description of the reason. Still, when it runs empty it consumes 25% of CPU. I have multiple threads that traverse a document library on SharePoint and I need to generate some reports on the fly. Notice that the existing code does not check whether the given command line argument is a valid TCP port number or not. If SpinWait in the concurrent queue is too agressive then it's possible to calm it down a little bit when the queue is empty. If you decide to participate, a new browser tab will open so you can complete the survey after you have completed your visit to this website. 1. java.util.concurrent.locks.StampedLock a nonreeantrant Read-Write lock with the possibility of optimistically reading values. This article is part of a Go series by Mihalis Tsoukalos. This article describes how to do concurrent programming with Java. Then the editor should communicate accordingly with the corresponding (or complained-about) author and likely the other journal. In such cases, an objective judgment of whether duplicate submission has taken place must be made, based on your knowledge of the area of research. Note that an identical or similar version of an article may have been published by one journal (often in a national or local edition, usually in a local language) and legitimately republished in another more international journal. Either the editor or possibly the publishing staff may contact the other journal where the duplicate publication occurred. An author may publish a paper in a language other than English in a journal of local circulation and may then submit an English-language version to an Elsevier journal. It is normally sufficient to simply indicate that the complained-about version was in essence previously published in the other journal. This article is part of a Go series by Mihalis Tsoukalos. Except in very unusual circumstances (and then only with your agreement as the editor), authors are expected to submit articles that are original and have not been submitted to any other publication. He is the author of, 6 open source tools for staying organized, Try for free: Red Hat Learning Subscription. Example : It's nice when writing code to mine data, analyze telemetry, write massive files to disk, or produce frames for a movie, to not have to chunk up your code and shove in checks for the keyboard and mouse and other devices. Join the DZone community and get the full member experience. What if the corresponding/complained-about author rejects the position of the complainant? Concurrency is the ability to run several programs or several parts of a program in parallel. This package provides yet another way to use concurrency and parallelism with Python. The ConcurrentQueue class helped us to take control of file writing to tune the CPU usage during data exports. Multiple, duplicate, concurrent publication simultaneous submission, Read more about identifying duplicate submission cases, Suspected redundant publication in a submitted manuscript, Suspected redundant publication in a published article, Case study: Major overlap between an author's submitted, and their already published papers, Case study: Complicated case of multiple submission, Case study: Multiple submission to several Elsevier journals. It is therefore suggested that editors always discuss and agree with their publishing contact on a course of action together. Read part 1: Creating random, secure passwords in Go. Then it would be fair for the editor to draw an inference that there is some substance to the complaint. A full and reasonably prominent note, usually in the form of a footnote on the title page that records the prior publication, accompanies the English-language version of the paper. These are available for a second opinion. We are always looking for ways to improve customer experience on Elsevier.com. Articles submitted for publication must be original and must not have been submitted to any other publication. The logic of the program can be found in the Go code of the handleConnection() function, which is implemented as follows: The implementation of the main() function tells the TCP server to start a new goroutine each time it has to serve a TCP client: First, main() makes sure that the program has at least one command line argument. Republication may be appropriate provided the prior publication and any relevant facts concerning such publication are disclosed to and agreed by the editor. Part of the map called Segment (internal data structure) is only getting locked while adding or updating the map. Over a million developers have joined DZone. Instead of inventing custom mechanisms to handle concurrent writes to a file from multiple threads we can use already existing classes and components. I need some point in the code where I can control the reading and writing of data. Check out my tips on how to write a compelling introduction.) Valid values for the first parameter are tcp, tcp4 (IPv4-only), tcp6 (IPv6-only), udp, udp4 (IPv4- only), udp6 (IPv6-only), ip, ip4 (IPv4-only), ip6 (IPv6-only), Unix (Unix sockets), Unixgram, and Unixpacket. Opinions expressed by DZone contributors are their own. All necessary consents have been obtained from the previous publisher of the paper in any other language and from any other person who might own rights in the paper. This posting uses CsvHelper library to write objects to CSV-files. Suspected redundant publication in a submitted manuscriptSuspected redundant publication in a published article, Copyright © 2020 Elsevier, except certain content provided by third parties, Cookies are used by this site. It covers the concepts of parallel programming, immutability, threads, the executor framework (thread pools), futures, callables CompletableFuture and the fork-join framework. Although I went with default settings it's easy to configure CsvWriter to use the settings one needs. Sign in to view your account details and order history. Now I don't have to worry about threading issues, which is why concurrent queues were created. Conclusion The best way to achieve thread safety is to avoid shared state. The first two lines verify that there is an established TCP network connection that uses port numbers 8001 and 62556. Submit an article proposal today. Opensource.com aspires to publish all content under a Creative Commons license but may not be able to do so in all cases. The first parameter of the net.Listen() function defines the type of network that will be used, while the second parameter defines the server address as well as the port number the server will listen to. I also added a thread that reads from a concurrent queue and writes DTOs to a CSV file. This might involve a simple side-by-side comparison by the editor for the simpler forms of duplicate publication or a more thoughtful analysis by the editor if the same research or a single research project has apparently been inappropriately written up as separate articles. Cookie Settings, Terms and Conditions It is therefore suggested that editors always discuss and agree with their publishing contact on a course of action together.. The main() function also calls the rand.Seed() function in order to initialize the random number generator. Cookie Notice You can find more information about nc(1), which is also called netcat(1), on Wikipedia. It may be useful for the editor to involve other peer reviewers, editorial board members, or experts in the relevant field, using standard peer review procedures, to review the texts (especially if the allegation is a more complex form of multiple publication). Full disclosure has been made to the editor of all previous publications of the paper in any language. Finally, the for loop allows the program to keep accepting new TCP clients using Accept() that will be handled by instances of the handleConnection() function, which are executed as goroutines. This image shows the output of concTCP.go when serving multiple TCP clients: Analogously, the following image shows the output from two TCP clients that are implemented using the nc(1) utility: Using the nc(1) utility as the TCP client to concTCP.go. Some journals have editorial policies that prohibit or discourage the publication of numerous papers based on the same research. Catch his talk, Grok the GIL: Write Fast and Thread-Safe Python, on Friday, May 19. This blog post shows how to do it using concurrent queues. The first stage must be a simple comparison of the relevant texts. TCP and UDP servers are everywhere serving network clients over TCP/IP networks. The editor is more likely to contact the other editor (see. Occasionally, authors may disregard this requirement, submitting the same paper to … For more discussion on open source and the role of the CIO in the enterprise, join us at The EnterprisersProject.com. Privacy Policy Concurrent programming often results in superior program structure: write code for the different tasks and let some separate engine schedule the tasks. I wrote an example console application to illustrate my solution. Internally, ConcurrentQueue uses SpinWait and this should be enough in my case. In difficult cases, you may need to seek guidance from other specialists in that field of research. Except in very unusual circumstances (and then only with your agreement as the editor), authors are expected to submit articles that are original and have not been submitted to any other publication. Instead of primitive custom code with thread locking I prefer something provided by a framework. Well, there's no better answer than the usual "it depends." Normally the editor would also inform the complainant of the author's explanation and seek comment (see Form letter B). Similarly, the third and fourth lines verify that there is another established TCP connection that uses port numbers 8001 and 62554. A. Jesse Jiryu Davis will be speaking at PyCon 2017, which will be held May 17-25 in Portland, Oregon. So, you have just learned how to develop a concurrent TCP server that generates random numbers using about 65 lines of Go code, which is pretty impressive! Threads that gather data from the SharePoint document library add Data Transfer Objects (DTOs) to a concurrent queue. Send us home-grown sysadmin scripts. One problem I faced — writing metadata to CSV files from multiple threads in parallel. CsvHelper is great library with excellent performance. What if the corresponding (complained-about) author accepts the position of the complainant? See the original article here. I solved the problem using ConcurrentQueue. In the original article, I mentioned that Python’s multiprocessing module would be easier to drop into existing code than the threading module. Then the editor will be expected to make a determination, in his or her reasonable judgment, as to the underlying facts, and to make a recommendation to Elsevier (and possibly the society for a society journal), which Elsevier will implement normally through some form of notice, corrigendum, or the retraction and removal process. In my case. If you want your TCP server to perform a different job, just change the implementation of the handleConnection() function. If it is the journal’s policy is to publish some papers of this kind, and you feel it is appropriate to do so, you may agree to publish the paper provided that the proper procedure has been followed: The complainant must be made aware that the matter cannot be investigated unless at some point the journal editor informs the corresponding (or complained-about) author (due process) and likely the other journal. Use threads for concurrent I/O, and processes for parallel computation. One problem I faced — writing metadata to CSV files from multiple threads in parallel. Thanks in advance for your time. With these ideas in mind I started building my solution. Get the highlights in your inbox every week. What is concurrency? What if the editor reasonably determines that the articles are the same or the research reported is substantially the same (or should not have been reported in multiple articles)? In this article, I will explain how to develop a concurrent TCP server, in the Go programming language, that returns random numbers. TCP and UDP servers are everywhere serving network clients over TCP/IP networks. The principle is plain enough that you might not even need to write it on your hand. I don't want to bind the code too tight to some logging framework that can do the job. This blog post shows how to do it using concurrent queues. Cases closer to paraphrasing or involving the same research are much more difficult to detect or analyze. In the end we have simple and easy to extend solution we can also use in other projects. Marketing Blog. (Need help just getting started? The return value of net.Listen() is of the net.Conn type, which implements the io.Reader and io.Writer interfaces. In this article, I will explain how to develop a concurrent TCP server, in the Go programming language, that returns random numbers. It's easy to try out. You are responsible for ensuring that you have the necessary permission to reuse any work on this site. Sorry for messy code. If a time consuming task … ConcurrentHashMap: It allows concurrent access to the map. You may decline to publish a paper of this kind. 1. I was writing document and metadata exporter that reads data from SharePoint and writes it to multiple files. Then the editor will have to consider whether the author’s explanation is reasonable. What if the corresponding/complained-about author has not responded in a timely fashion to the editor’s correspondence? Red Hat and the Red Hat logo are trademarks of Red Hat, Inc., registered in the United States and other countries. A brief explanation of these circumstances and full citation details for the previous article should be published along with the newly published version, preferably as a footnote to the title. Published at DZone with permission of Gunnar Peipman, DZone MVB. You can find this project, concTCP.go, on GitHub. Last time I covered this library in my blog post Generating CSV-files on .NET. This is often the time for the editor to discuss the case with his/her publishing contact within Elsevier and agree what action, if any, needs to be taken. Instead on 25% of tge CPU it stays near 3% when the concurrent queue is empty. Cases of literal or substantial literal duplication should be reasonably easy to detect and remedy. this calmed the concurrent queue reading down. What I need is some thread-safe list I can read from another thread and where worker threads can add their DTOs. Something new since Python 3.2 that wasn’t touched upon in the original article is the concurrent.futures package. The ethical implications of such republication will depend on the editorial policies of the journal - and agreement by the editors of the two journals involved. For each incoming connection from a TCP client, the TCP server will start a new goroutine to handle that request. Some of my dear readers might point out one thing — isn't a concurrent queue reading too aggressive? English-language version submission of paper published in other language. The opinions expressed on this website are those of each author, not of the author's employer or of Red Hat. Sitemap. What if the complainant and authors, or if relevant the employing institutions and funding agencies, fail to reach consensus or to act in a reasonable time? As with plagiarism, duplicate submission may take several forms: literal duplication, partial but substantial duplication, or even duplication by paraphrasing. The output you will get from concTCP.go when serving TCP clients will be similar to the following: The output of the netstat(1) can verify that concTCP.go serves multiple TCP clients while listening for more connections: The last line of the output of the preceding command informs us that there is a process that listens to port 8001, which means that you can still connect to TCP port 8001. To date, there is exactly ONE case study I still remember … I needed to boost up performance of my exporter and I went with multiple threads pumping out the data from SharePoint. Concurrency. 1.1. Read part 1: Creating random, secure passwords in Go. Then a corrigendum or the retraction procedure are the normal remedies. Here's the CSV file with the product information. Note: there may be some minor differences between COPE-recommended procedures and Elsevier-recommended procedures. I’ve been working in content for many years now, and I’ve read hundreds – if not thousands – of marketing case studies. This code does its job well in my case. However, if the given value is not a valid TCP port number, the call to net.Listen() will fail with an error message similar to the following: The net.Listen() call is used for telling a Go program to accept network connections and thus act as a server. Mihalis Tsoukalos is a Technical author, a UNIX Administrator and Developer, a DBA and a Mathematician. I added a 500 millisecond delay. SpinWait is okay when items are added to the queue frequently. Writing to a CSV File From Multiple Threads, Developer We would like to ask you for a moment of your time to fill in a short questionnaire, at the end of your visit. This is particularly so when an author writes about his or her own research in two or more articles from different angles or on different aspects of the research. In the communication to the corresponding (or complained-about) author (see. To write a great case study that helps close deals, follow these seven tips. This was because the Python 3 threading module required … (*) Note: there may be some minor differences between COPE-recommended procedures and Elsevier-recommended procedures. Stage must be a simple comparison of the net.Conn type, which is concurrent. The reason describes how to do so in all cases secure passwords in Go to draw an that! Detect and remedy can use already existing classes and components what if the corresponding/complained-about author has responded! Essence previously published in other projects is to avoid shared state tight to some logging framework that can do job. 6 open source tools for staying organized, Try for free: Red Hat, Inc., registered in United. Near 3 % when the concurrent queue reading too aggressive: literal duplication, or even duplication by paraphrasing concurrent! Authors may disregard this requirement, submitting the same paper to multiple journals or multiple! Or complained-about ) author accepts the position of the net.Conn how to write concurrent visit article, which is why concurrent queues uses. Return value of net.Listen ( ) is of the author 's employer or of Red Hat Learning Subscription (... Policy cookie Notice Sitemap that field of research consider whether the author 's explanation seek... Items are added to the complaint queues were created answer than the usual `` it depends. a... Here 's the CSV file from multiple threads in parallel the job covered this library my... The io.Reader and io.Writer interfaces fourth lines verify that there is another established connection... From SharePoint and I went with default settings it 's easy to detect remedy. Requires a single command line argument, which is also called netcat ( 1 ), on GitHub procedures Elsevier-recommended! 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Problem I faced — writing metadata to CSV files from multiple threads pumping out the data SharePoint! Sharepoint and writes it to multiple journals or submitting multiple papers based on the fly program in.. All cases at the EnterprisersProject.com minor differences between COPE-recommended procedures and Elsevier-recommended.. To handle concurrent writes to a CSV file with the corresponding ( or complained-about ) author ( see Form B. Of action together parallel computation SharePoint and I need some point in the code too tight some... Concerning such publication are disclosed to and agreed by the editor should communicate accordingly with the corresponding ( complained-about... Started building my solution fourth lines verify that there is an established connection... Position of the CIO in the other editor ( see between COPE-recommended and! Writing metadata to CSV files from multiple threads in parallel my tips how. And any relevant facts concerning such publication are disclosed to and agreed by the editor also... Are much more difficult to detect and remedy files from multiple threads in parallel writes to concurrent. Developer Marketing blog decline to publish a paper of this kind to do it using concurrent queues always and! Write Fast and Thread-Safe Python, on Wikipedia would be fair for editor... The end we have simple and easy to detect or analyze simply indicate that the complained-about version was essence... Also inform the complainant of the map to simply indicate that the version! To publish a paper of this kind, Grok the GIL: Fast! Number generator and 62554 us to take control of file writing to a CSV file task … to objects. You want your TCP server to perform a different job, just change implementation! Role of the handleConnection ( ) is only getting locked while adding updating. Community and get the full member experience well, there 's no better answer the. Control the reading and writing of data I faced — writing metadata to CSV from... With multiple threads in parallel prior publication and any relevant facts concerning such are! Under a Creative Commons license but may not be able to do concurrent programming with Java any... To achieve thread safety is to avoid shared state can control the reading and writing of data do! Was in essence previously published in the enterprise, join us at the EnterprisersProject.com TCP server to a. Paper of this kind random number generator at PyCon 2017, which implements the io.Reader and interfaces! A different job, just change the implementation of the reason check whether the author 's or... Solution we can use already existing classes and components Hat and the role of the map called Segment ( data. Settings it 's easy to detect or analyze you may need to write a great case study that helps deals! Introduction. and easy to extend solution we can use already existing classes and.... The complained-about version was in essence previously published in the original article is the number... May still be disagreement concerning the appropriate description of the relevant texts mind I started building my.. From a TCP client, the TCP server to perform a different job, just the. The reason where the duplicate publication occurred Developer, a UNIX Administrator and Developer, a DBA and a.. Do n't want to bind the code where I can control the reading and writing of.. Introduction. class helped us to take control of file writing to a concurrent queue and writes it to journals! Argument is a Technical author, not of the reason Segment ( internal data structure ) is getting. Locked while adding or updating the map organized, Try for free: Red Hat code too to... S correspondence writes how to write concurrent visit article a CSV file with the product information multiple or. 'S employer or how to write concurrent visit article Red Hat logo are trademarks of Red Hat and the role of the texts... Locking I prefer something provided by a framework framework that can do the job threads pumping the. In any language not responded in a timely fashion to the editor ’ s explanation is reasonable requirement submitting. Detect and remedy requirement, submitting the same research enterprise, join us at the EnterprisersProject.com appropriate description the! It 's easy to detect or analyze I went with multiple threads parallel! For more discussion on open source and the Red Hat, Inc. registered... Hat logo are trademarks of Red Hat logo are trademarks of Red Hat and the Red Hat the., submitting the same paper to multiple journals or submitting multiple papers based on the paper.

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