Last seen: Jul 30, 2014 10:06 AM EDT
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Username: doluongsl

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Location: Hanoi, Vietnam

Member since: July 2008



(147 reviews)

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2 users have recommended this freelancer.

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My projects:

  • $200.00 USD
    Profile image for Seller harrisonwang


    Jun 9, 2014

    Great worker.

    Project Description:I am looking for someone who is familiar with Shopify stores. I need someone to help me add filters to the products. I am looking to create multiple dropdowns so that the exact product can be found. Like...
  • $894.00 CAD
    Profile image for Seller Manbearian


    May 7, 2014

    Project turned out perfect :)

    Project Description:I'm in need of someone with great skill to recreate a website layout of another company. I like their design and layout... I just need it switched out with my images or temp images till images can be created.
  • $600.00 USD
    Profile image for Seller jasoncaldwell888


    May 1, 2014

    I am currently working with this programmer and he has been completely understanding and professional.

    Project Description:I need someone to develop a user friendly excel worksheet to speed up work production on a surface pro 2 tablet. i have a Word version already developed but I need someone to convert it to a speedy excel version in the short term...
  • $155.00 USD
    Profile image for Seller kjellgrant


    Dec 30, 2013

    Not all the tasks were done as requested and he argued they were completed or were not his job to do.

    Project Description:I would like several changes made to the layout of my wordpress theme. The wordpress theme is OpenDoor. I would like changes to the layout of the product details page and changes to the layout of the product lists...
  • $120.00 USD
    Profile image for Seller newsunfad


    Dec 20, 2013

    An exceptional, professional and brilliant developer. Would definitely hire again for most subsequent projects.

    Project Description:We have purchased a wordpress theme and begin customization already, we have worked on this project to a certain stage but we would require some specific customization not directly provided by the theme but requires PHP knowledge...
  • $185.00 USD
    Profile image for Seller pjang12


    Dec 20, 2013

    Great attention to detail and follow-up to make the website pixel-perfect.

    Project Description:Revamping the current website
  • $28.00 AUD
    Profile image for Seller wearethezealous


    Nov 19, 2013

    Clear communicator and timely delivery. Great collaboration overall!

    Project Description:Need someone to add a bit more code to the segment below. Require addition of a function which checks which of three radio buttons have been selected in a SquareSpace form and redirects accordingly to one of three separate webpages...
  • $50.00 USD
    Profile image for Seller bentleygroupsl


    Nov 7, 2013

    Great job as always

    Project Description:update a website and add embedded video.
  • $1190.00 USD
    Profile image for Seller esteghlali


    Oct 24, 2013

    This guy is fast, knowledgeable and honest. I loved working with him. I don't recommend him to others since i have LOTS of work for him.<br/>

    Project Description:N/A
  • $189.00 USD
    Profile image for Seller Vegaredo


    Oct 8, 2013

    Great as always!

    Project Description:Hi! Convert my website into a cool IOS app and help me publish it on app store. When opening app, please display this page Name of the app: NetMonitor Description: This app connects you to NetSecureIT&#039;s NetMonitor systems...
    has not completed any projects.
  • $25 USD/hr In Progress

    I need help on finishing my career review website. Our site uses a CakePHP framework and our code is already on git - we use bitbucket. I&quot;m looking for someone to first revamp my homepage (designs are already complete and are in PSDs). I&quot;m on an urgent timeline and could use your assistance. Please email me at / add me on skype at brendan.rakphongphairoj. I will pay you more than your typical price given the urgency.

  • $25 USD/hr In Progress

    I have ongoing work related to our previous project &quot;Locket Project 1&quot;

  • $20 USD/hr In Progress

    We are looking for a cakephp web developer to help us finish the web set up.It is a learning platform between the tutor,the students and clients Currently all the pages of the website have been designed and xhtml will be ready for you .Now we just need a web developer. Requirements * Seo optimized * PHP+Mysql * Need Seo Title and meta words for each pages * Need Top admin and admin feautres, and top admin can set different roles to admins --------------- *Tutor and student Client member registration module *Search Tutor module *Tutor and student management module * Poll Section *Tutor&quot;s blog *Ask and Question module Job Description: We&quot;re looking for a Web Developer. Your responsibilities: - Review workbusiness requirements, work close with me and confirm every details before you start to work - Perform a technical analysis of requirements - Write clean, modular, robust code to implement the desired requirements - Contribute ideas for making the application better and easier to use Your qualifications: - A work style that is extremely detail oriented - Stable Framework Using CakePHP with 85% test results - Have similar job experience and MUST provide the similar site with admin panel.

  • $247 USD In Progress

    Hi,I am looking for a wordpress template developer who is able to create a sleek template which looks very similar to our home page in wordpress. This template must be compatible with the newest version of wordpress, and I need it done as soon as possible. My budget is $250.Thank you!

  • $262 USD In Progress

    Hi!! I have a quiz application on android, written in Java and need some help to modify it a little:I need some help with changing a few things in an android application source code (my source code):1) Need to change package name2) Need to add 1 feature (count of questions and how many questions left)3) I need general assistanceThank youPlease write [verified1] in your bid to know that you are legit.If you would like to see more details, I will provide teamviewer ID and show you what I need help with.ThanksRequirements:-> Experienced Android Coder-> Can easily debug issues and fix-> Understands how to use ADT and Eclipse-> Speaks fluent english

  • $750 USD In Progress

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  • $200 USD In Progress

    A) We already have, on our social networking site, a section that publishes new articles at the frontend, to frontend members of the site, from the admin section. But what what we want is:Within the admin section: we need New Buttons, namely(i) a button to allow us to save as draft first and publish only later, and (ii) if saved as draft, to have a a button for a scheduled date and time in AM or PM to then publish the article, and (iii) plus: a button to unpublish any article that&quot;s been published. (ii) and (iii) to also appear in listing of files already published, not just for saved draft versions only.Also: There is an &quot;Inactive&quot; button currently to make any uploaded article not appear first, but the article title is still appearing in a frontend page sidebar. This is a bug. Can remove it, too.B)Then also, in the admin area, there is a page showing members who just registered but who have not yet verified their membership by email. Normally, when they verify their email, their records disappear (1. non-verified pending profiles) and are moved to another section in the admin area (2. email-verified pending profiles). We want a button on each record in 1, that allows admin to click on to manually deem that each particular pending profile is already email verified, to transfer it to 2. [Reason: Because some members are too lazy to verify from their email address, so we want to at our discretion, allow some to move over, being deemed as email-verified.]C) When new frontend members register their account, they type in their email address as one of the required fields and hit submit, or amend their email address later after successful registration. In both places, we want the page to unable to change to the next one, when the member types in yahoo as email address, until they change to another one, and you make an overlay appear over the page when this happens, with a message &quot;Yahoo has slow ability to deliver emails into recipient inboxes. Please choose another email provider, such as Gmail, and log on after this registration, to verify your account&quot;.The site is coded in Smarty.

  • $250 USD In Progress

    Install user interface to accept new users voucher codes. Install tables on CMS to upload new voucher codes. Users to be differentiated as to users who have already been uploaded and users who have not been uploaded. From voucher interface users will be automatically uploaded into Wishlist member with no additional uploads necessary on the back end. Automated emails that are currently sent from system will be sent to new users when joining through this voucher feature.Testing included.

  • $125 USD In Progress

    Goal: Assign a random bitcoin wallet address to new customer accounts created in OpenCart 1.5+. Script steps:1. When customer clicks &quot;create account&quot;, open table &quot;wallets&quot; and select 1 random address out of all rows with &quot;used&quot; value of &quot;0&quot;.2. Add selected address to new customer profile field &quot;walletID&quot; and save with the rest of their customer profile. 3. After new account is setup, update the address&quot; &quot;used&quot; field in &quot;wallets&quot; table from &quot;0&quot; to &quot;1&quot;. **If there is a better/easier way to do this, please feel free to make suggestions.I will manually add the &quot;wallets&quot; table to the opencart database. The table will have 3 columns: &quot;index&quot;,&quot;address&quot;,&quot;used&quot;. See attached Excel doc for sample database content. *** I prefer that this script be implemented as a vQmod***vQmod tutorial:

  • $200 USD In Progress

    I need a windows macro written which pulls a line from a txt fileand then paste it into seospyglass. Runs various options in seospyglass and when done takes the next line from the txt file until the last line is reached.You need to have seospyglass (free trial) and have experience in writing macros.Running windows 7 / Windows 2008 (VPS)Step by step:1) Open txt file c:\macro.txt2) Copy first line to clipboard3) Goto seosplyglass press CTRL+N (new project)4) Select option &quot;enter a competitors url to analyze&quot;5) Paste clipboard6) Wait for program to complete (time varies)7) Press Finish (ALT+F)8) Press Yes (ALT+Y)9) Deselect Domain factors10) Press Next (ALT+N)11) Wait for program to complete (time varies)12) Press Finish (ALT+F)13) Copy next line from txt file to clipboard14) Repeat option 3 till 13 until all lines in txt file are completedThe txt file will contain urls like:domain1.comdomain2.comdomain3.cometc

  • $60 USD Apr 18, 2014

    3G/G/1 Queueing Systems: waits and queue sizes(a)Using the analytic formulas for an M/M/1 what is average queue wait, average total time in the system and average queue size if the average inter-arrival time (not rate) is 2.7uS and the average service time (not rate) is 1.8uS?(a)Ans) Given that average inter- arrival time = 2.7 uS Average service time = 1.8 uS Arrival rate is 1/(2.7) = 0.37 = λ service rate is 1/(1.8) = 0.55 = µLet ρ = λ/μ= 0.67So, Average total time is E(v) = ρ/λ(1-ρ) = 5.49 s Average Wait time is E(w) = E(v)-1/μ= 3.69 s Average Queue size is E(m) = ρ/(1-ρ) = 2.03(b)If a Weibull distribution has a shape parameter of 0.65, what would be the equivalent Weibull scale parameter to produce an average inter-arrival time (not rate0 of 2.7uS?(c)Modify the program to have exponential inter-arrival times. What is a reasonable amount of simulation time to get good agreement between simulation results and your computation from part (a)?(d)Modify the program to have Weibull inter-arrival times with shape of 0.65 and the scale parameter4G/G/1 Queueing Systems: Queue size distributionsUsing the amount of simulation time you came up with in problem 3, modify the queue_monitor() function in the to keep track the queue size at each sample time (use a global python list).(a)Plot a histogram of a M/M/1 queue with parameters from problem 3(a).(b)Plot a histogram of a Weibull/M/1 queue with parameters from problem 3(b).5G/G/k/k Queueing Systems: Service Blocking LossAssume that due to a complicated business arrangement that your specialty video on demand start up can only simultaneously stream 25 copies of the new hit video &quot;Smart Dogs, and Dumb People&quot;. Assume that this video has a playing time of 1.3 hours. Assume that requests arrive at an average rate of 17 per hour. Hint you may want to use the files and to help you answer the following.(a)Based on an M/M/25/25 queue system what is the probability of a customer not being able to view this wonderful video? (Hint use Erlang loss formula)(b)Modify the program to simulate the situation above. How long in simulation time do you need for good agreement between theory and simulation?(c)Why might exponential service times be a bad model for the above situation?(d)Using the same parameters simulate a M/D/25/25 queue, where D stands for deterministic, i.e., fixed service time (in video case 1.3 hours). How does the blocking probability compare with the M/M/25/25 case?

  • $371 USD Dec 31, 2013

    We currently try to relocate our Norfa Sysmaster switch with new Set of IP and once all new IP entered, the system fails to be accessible.Can help help on this

  • $25 USD/hr Dec 28, 2013

    Hi. Have tried to find a keylogger version that requires simply a mobile number and no access to the actual remote phone but got stuck with the problem so decided to hire a freelancer. I have found your profile, then lost it out of sight and now found it again. Would you be up to the topic please?

  • $11111 HKD Dec 17, 2013

    Wordpress website for events, member profiles and donations via PayPal. Similar simple clean look and feel to / Color scheme and images will be provided by designer as psd.I am looking for quality at value for money not lowest price, so senior developers only please. PayPal API work may be required.Features to include:1. Members can sign up, create profile, upload their own pic, or login and profile details copied from Facebook.2. Real time donations, invoices and receipts via PayPal. Members may choose at payment time to have their names listed on event page or stay anonymous.3. Jquery slideshows to homepage main image.4. Total donations per event shown on homepage and individual member profile page,5. /iOS compatible template can be customized if suitable.6. Members will compete in events so each event page should show top ten members in descending order of highest donations.7. When signing up members can choose to create new or join existing team and invite others by email to jou up.8. Social buttons to share any page and add this or google Analytics.9. Generate PDF thank you letter to email to donors - word template to be provided.Any questions pls pm me.

  • $426 USD Oct 26, 2013

    Em đang cần acc Paypal nhận tiền. Có gì liên hệ giúp em với

  • $30 USD Jun 12, 2013

    Douluongs,We would like to hire you for the project that we had discussed earlier. But the website should me in flash. Would you kindly estimate TAT and your bid.

  • $250 USD Jun 8, 2013

    Doloungs!This is Urooj ,Business Development Manager at Zuztech.Since you have already worked on the cloning of web counters, I would genuinely like to offer you the job that I have invited you for. We want the website done with similar functionality of ASAP.I would request you to complete the job under $250 as this is our final response.Awaiting your responseThanks,UroojBusiness Development ManagerZuztech.

  • $1200 USD Apr 11, 2013

    I need a mobile app where my customers can track their shipments on my truck. I would like them to see the route, where I am, and where I am going and how long before I arrive.I used an app that worked well for us called &quot;See-It-Ship&quot; but it is no longer working.

  • £550 GBP Apr 11, 2013

    I need a small ecommerce site where i can accept payment by credit cards and paypal. My site will sell electronic cigarettes intially.These products i already sell in the shops but i want a bigger audience. Over the period i would like to enhance the webiste to include more features. I want a simple site with a banner image at home page.Products can be added through content management area.Features requiredLogin Shopping CartFinal Checkout

  • $200 USD Apr 9, 2013

    Hello every one,I need a person who has a core knowledge of API&quot;s like paypal, freelancer, yelp, skrill etc. If you don&quot;t know it well, than plz donot bid on this project. And also if you do any related work than plz show me especially for YELP API. And this will be long term work with the perfect freelancer.Thanks for giving your time to view this project.

  • $1200 CAD Jul 29, 2012

    The website is a trading website that must facilitate financial transactions. We can discuss further details of the website later. I already have a web designer, I need someone who is a wed programmer.

    does not have any open projects.
    does not have any work in progress.
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Fulltime Freelancer

Apr 2012 - Present (2 years)

Freelancer & Scriptlance

Work on various project from Website (CakePHP, PHP, Joomla, Wordpress...) to Mobile App (iOS, Android)

Project Manager

Jan 2011 - Apr 2012 (1 year)


Project manager for all website projects and mobile projects.


Jun 2008 - Dec 2010 (2 years)


Web Developer: PHP, MySQL, HTML, Javascript<br />Web Scraping: Python, PHP.<br />Web bot: AutoIT


Bachelor of Engineering

Dai hoc Quoc Gia Hànôi



Fundamental IT Engineers



Dividing Agents on the Grid for Large Scale Simulation

Springer-Verlag Berlin, Heidelberg ©2008

Multi-agent based simulation is an important methodology<br />that uses models incorporating agents to evaluate research conclusions.<br />When the simulation involves a large number of agent, however, it re-quires extensively high computational power. In that case, all agents in<br />the simulation model should be distributed in a way so that agents can<br />be run in parallel on multiple computational nodes to gain the required<br />performance speed up. In this paper, we present a framework for large<br />scale multi-agent base