Optimization of Moodle LMS for Improving User Response Time
M. Tech. Project Stage-1 Report
Submitted in partial fulfillment of the requirementsfor the degree of
Master of Technology
by
B. RAJURoll No.: 123050091
under the guidance of
Prof. Deepak B Phatak
Department of Computer Science and EngineeringIndian Institute of Technology, Bombay
September 2013
Contents
1 Effectiveness of LMS 1
2 Moodle LMS and Other LMS’s to Moodle LMS 4
3 Benefits of Moodle LMS and Survey Details 7
4 Performance Testing Tools 11
5 Performance of various servers 12
6 Different techniques 14
7 Conclusion 19
i
List of Figures
ii
Abstract
Chapter 1
Effectiveness of LMS
1. Adapting LMS architecture to the SOA: an Architectural Approach[26]
Abstract: This paper presents an architectural approach to adapt the Moodle LMS to the SOAand some important issues involved in the adaptation are analyzed. Taking into account inter-operability specifications, all SOA to LMS adaptation drawbacks are solved by the applicationof the new architecture.
Keywords:SOA, Web Services, IMS LTI, OKI, interoperability
2. Effective Use of LMS: Pedagogy through the Technology[58]
Abstract: This paper aims to answer one of the most common questions asked in Educational
Technology is that if the media used an restrict/enhance the teaching approaches or if wecan adopt a variety of approaches regardless of media we use. To do this, the question isdiscussed in the scope of a widely used media, Learning Management System because thereare variety of Learning Management Systems which have different capabilities such as Sakai,Blackboard, Intact and Moodle. The author advocates that primarily method, the presentationway of instruction, influence the teaching/learning process not media. On the other hand, itdoes not mean that media, the way of delivery instruction, is not important; media also supportteaching process but you can use alternative media to make the same effect. For that reason,media selection should be done by taking into account several factors such as faculty; learnerreadiness to use selected media; content; number of learners and instruction time.
Keywords: LMS, ICT, Pedagogy
3. Developing an Effective and Efficient eLearning Platform Using Open Source Software[15]
Abstract:The Web Based Training (WBT) or eLearning is emerging to replace traditional
training. “eLearning”, is rapidly becoming the preferred route to building and maintainingadvanced performance capabilities via improved efficiencies and effectiveness.For many orga-nizations, especially those in the developing countries, acquiring a commercial LMS could bevery costly in order to host the contents. The purpose of this paper is to introduce Open Sourcesoftware and how it could be used in implementing a free LMS system and to introduce howthe College of Internet Distance Education at Assumption University has achieved it.
Keywords: LMS, open source software, moodle
1
4. Enhancing Learning Management Systems to Better Support Computer Science Education[53]
Abstract: In this report we provide an overview of current CS specific on-line learning re-
sources and guidance on how one might best go about extending an LMS to include such toolsand resources.
Keywords:Learning management system, LMS, CALMS, computing augmented learningmanagement system, computer science education.
5. Architecture of a multiplatform virtual campus[45]
Abstract:This paper analyzes this architecture from three different points of view: (i) softwarearchitecture; (ii) detailed software design; and (iii) hardware architecture.
Keywords: e-learning; integration; LMS, WebCT; Moodle; Sakai; Blackboard
6. E-Learning (MOODLE) Based on Service Oriented Architecture[66]
Abstract: Web services as an example of SOA support the integration of software applicationsin an incremental way, using existing platforms and languages that utilize and adopt existinglegacy systems. Virtual Learning Environments (VLEs) are one of the emerging domainsthat require to be extended to SOA. Web Services Selection involves discovering a set ofsemantically equivalent services by filtering a number of available services based on servicemetadata, and selecting an optimal service based on realtime during previous executions of aservice.
Keywords: SOA, Web Services, E-Learning, VLE, MOODLE
7. Paving the Way Towards an Efficient Learning Management System[19]
Abstract: This paper provides insight into building an effective and efficient LMS using five
general principles, which are defined as the Five Elements. This leads to the creation ofa dynamic, learnercentered environment which focuses on learning retention and cognitivedevelopment, juxtaposed with emerging technologies.
Keywords:LMS, Design Issues, Expert, Learner-Centered, Student Status Monitoring (SSM)
8. Web-based Learning Management System Considerations for Higher Education[14]
Abstract: purpose of this study is to present a model which incorporates the concepts and
findings from research on LMS application in higher education. The alternative model wasmodified based on the Technology Acceptance Model (TAM). In addition, five categories ofLMS features for higher education are discussed including: (1) transmitting course content;(2) evaluating students; (3) evaluating courses and instructors; (4) creating class discussions;and (5) creating computer-based instruction.
Keywords: Learning Management System, Technology Acceptance Model, Human Effect,Human Computer Interface.
9. An Approach for Identifying Affective States through Behavioral Patterns in Web-based Learn-ing Management Systems[28]
Abstract: In this paper, we present an approach for the detection of affective states from the
2
patterns of students behavior observed during an online course. By calculating the affectivestates and then filling that affective state data into the student model of a learning managementsystem a basis for adaptivity is provided.
Keywords:Human Computer Interaction, Affective States, Adaptive Learning Systems, Con-fidence, Confusion, Effort, Independence.
3
Chapter 2
Moodle LMS and Other LMS’s to MoodleLMS
1. Why Moodle[3]
Abstract: This paper focuses on this platform and on a comparison between VLE (Moodle)and other VLE systems in order to discover their strengths and limitations. The comparativestudy is in two phases. The first phase is based on the features and capabilities of VLE toolsand the second phase is based on the technical aspects of the VLE platforms.
Keyword: E-learning, Virtual Learning Environment, Open Source Software, Moodle
2. The application of Moodle on an EFL collegiate writing environment[64]
Abstract: This article is mainly focused on how Moodle can be effectively used in a collegewriting classroom. First of all, the basic installation and major functions of Moodle will beintroduced. Then, social constructionist view of Moodle will also be specified. Next, thevital features related to writing instruction will be detailed. After that, the reasons to chooseMoodle at Chung Hua University will be briefly talked about.
Keywords: Moodle, CMS, English writing
3. Experience of Course Migration from Blackboard to Moodle LMS – A Case Study fromUDSM[27]
Abstract: These paper is discussing about shifting from Blackboard LMS to Open source
software LMS which is Moodle because of high cost of annual licensing for the proprietarysystem and at the same time these Open source softwares LMS’s were receiving significantattention, particularly from institutions in developing countries and These open source soft-ware LMSs were developing popularity in higher education because apart from the obviouslylower associated costs, they adhered to other important OSS principles such as potential forcustomization and are often community driven and therefore community serving.
Keywords: Higher Learning Institutions (HLIs), Learning Management System(LMS), Infor-mation and communication technologies(ICT)
4. A Comparative Study of MOODLE with other e-Learning Systems[32]
4
Abstract: This paper is focused on the Moodle Architecture and comparative study of Moo-dle, thus we discusses comparisons between different virtual learning management systemsand presents some authentication plug-in that Moodle supports.
Keywords:Moodle, Moodle Architecture, Virtual Learning Environment, Open Source Soft-ware, Authentication plug-ins
5. Developing a More Effective and Flexible Learning Management System (LMS) for the Aca-demic Institutions using Moodle[46]
Abstract: basic idea of this paper is to develop a framework for a learner-centered as opposed
to a course-centered Learning Management System (LMS) for the academic institutions. Thepaper describes the approach to develop such LMS system by integrating Web 2.0 applicationsinto one place, which enables users to create and join communities of practice, engage inreflective learning and collaborate with peers online. This paper examines and studies thefeatures of the open source learning management software such as Moodle.
Keywords: Learning Management System, Moodle, E-learning.
6. Adapting Moodle to Better Support CS Education[56]
Abstract: Many commercial or open-source systems for organizing courses are available,
offering access to course materials, communication support, and receiving and grading studentsubmissions. However, most of these systems are by default not ideally prepared to addressspecific demands of Computer Science (CS) education. We explore how Moodle as one of themost popular and free systems can be better adapted to support the needs of CS education andprovide concrete guidance on features and extensions that could be explored. This report andwork based on it can significantly improve courses for educators and students alike.
Keywords:Learning management system, LMS, computing augmented learning managementsystem, CALMS, Moodle, computer science education
7. Blackboard vs. Moodle: Comparing User Experience of Learning Management Systems[38]
Abstract: This study compared the user experience between the leading proprietary solu-
tion,Blackboard, and the leading open source solution, Moodle. We established a controlgroup that only used the proprietary solution and two study groups, a faculty group and a stu-dent group that used the open source solution, but had previous experience with the proprietarysolution
Keywords: Distributed Learning, e-Learning, Human Computer Interface, Learning Manage-ment System.
8. A Comparison of Two Learning management Systems: Moodle vs Blackboard[9]
Abstract: A trial was undertaken to consider whether Moodle warranted a more formal con-
sideration as an alternative to the institution’s current LMS. The results indicate that the prod-uct appears worthy of further consideration. This report documents the reflections of theinstructor using Moodle to teach, the systems administrator supporting the system, and thestudents involved in a trial use of Moodle.
Keywords:Learning Management System,moodle,blackboard
5
9. LEARNING IN TECHNOLOGY-RICH ENVIRONMENTS: SECOND LIFE VS. MOODLE[23]
Abstract: The paper presents a brief exploration of learning in technology-rich environments,
aiming to answer the question where and which technology is appropriate to use. This isbased on comparison of how two platforms are used for learning: Second Life and Moodle,addressing their theoretical groundings and methodologies.
Keywords:e-Learning, Virtual world, LMS
10. Charting a New Course from Blackboard to Sakai[57]
Abstract: This paper will chronicle the issues that led us to begin charting this course, the
initial departmental recommendation, how we involved faculty in the review and decisionmaking process, the technical review process, the pilot and the implementation
Keywords:Learning Management System, Evaluation, Process, Blackboard, Sakai, Vendor,Implementation, Pilot
11. A Recommender System Architecture for Instructional Engineering[47]
Abstract: In this document we are centered in presenting the overall system architecture anddescribing their main parts. We are also reporting actual results. Due to it’s wide concep-tion, this project involves Knowledge Engineering, Software Engineering, Machine Learning,Semantic Web Searching, ad Data Mining models and tools.
Keywords: Instructional Design, Instructional System Development
12. Developing an Effective and Efficient eLearning Platform Using Open Source Software
Abstract: The purpose of this paper is to introduce Open Source software and how it could
be used in implementing a free LMS system and to introduce how the College of InternetDistance Education at Assumption University has achieved it.
Keywords:LMS,Moodle,information technology
13. Moodle E-learning Environment as an Effective Tool in University Education
Abstract: In this paper, it is argued that blended learning with computer based learning in theMoodle e-learning environment based on social constructivist learning theory is an effectivetool for teaching and learning of occupational health and healthy workplaces discipline basedon Ergonomic knowledge.
Keywords: E-learning; Blended Learning; University Education; Convergence
6
Chapter 3
Benefits of Moodle LMS and Survey Details
1. Experience of Course Migration from Blackboard to Moodle LMS – A Case Study fromUDSM[27]
Abstract: These paper is discussing about shifting from Blackboard LMS to Open source
software LMS which is Moodle because of high cost of annual licensing for the proprietarysystem and at the same time these Open source softwares LMS’s were receiving significantattention, particularly from institutions in developing countries and These open source soft-ware LMSs were developing popularity in higher education because apart from the obviouslylower associated costs, they adhered to other important OSS principles such as potential forcustomization and are often community driven and therefore community serving.
Keywords: Higher Learning Institutions (HLIs), Learning Management System(LMS), Infor-mation and communication technologies(ICT)
2. Evaluation of a MOODLE Based Learning Management System Applied at Berlin Instituteof Technology Based on ISO-9126[4]
Abstract: In this paper we will study and evaluate the Learning Management System of TU
Berlin, Information System for Instructors and Students (ISIS), that has been adopted since2006, our focus will be on three characteristics of ISO-9126, which are usability,functionality,and reliability of ISIS. Our results will be presented in this paper.
Keywords:eLearning, Evaluation, Usability, ISO-9126
3. Work in Progress: Self Evaluation Through Monitored Peer Review Using the Moodle Platform[29]
Abstract: We developed a module for the Moodle open source eLearning platform through
which undergraduate students can Build, Answer and Evaluate by blind peer review ques-tions related to a course subject. In the first learning phase the students can build and submitquestions. Selected questions are candidates for inclusion in later tests. After the test a refer-ence solution and evaluation criteria is made public. The student’s answers are then randomlydistributed so that each student has to evaluate at least three of his peer’s tests using doubleblind peer review. After all tests are cross-evaluated by the community of students, the systemgrades them by majority vote in each question.
Keywords:Peer Review, Web-based Learning, Moodle
7
4. USING MOODLE PLATFORM IN DISTANCE EDUCATION
Abstract: The paper underlines how MOODLE can be used to enhance the students’ under-standing and enjoyment of science, how it can and will be used for future teacher preparationthrough a Tempus project, resuming also the authors intention and effort to coagulate the net-work of national MOODLE users.
Keywords: A LMS, Course Management System, Virtual Learning Environments
5. Open source learning management systems in e-learning and Moodle[7]
Abstract: some analyses and comparisons were made about open source learning manage-ment systems and Moodle was outstanding with many features among other LMS that aims toimprove the educational quality and include the tools that an e-learning system should have.
Keywords: Moodle, LMS, Distance Learning
6. E-learning Experience using Open Source Software: Moodle[8]
Abstract: The present paper highlights the efforts made by the Department of Library andInformation Science,University of Pune to use an open source software, viz., Moodle for thepromotion of e-learning in the department.Various utilities of the Moodle such as developmentof the course, blogs, wiki, question banks, notification to the students, etc., has been used. Thisarticle narrates the experience of designing, development and implementation of e-learningcourse for the ‘Information Technology’ paper of the MLISc curriculum.
Keywords: E-learning, technology-based learning, Moodle, blogs, wiki
7. Annotating Learning Materials on Moodle LMS[37]
Abstract: Moodle module: Learning Annotation for Moodle (LAM) was built. With thismodule, students can see both their own annotations and different thoughts in other students’mind. Instructors can promote teaching by viewing students’ annotations.
Keywords: Collaboration; Moodle; LMS
8. Enhancing Moodle to Support Problem Based Learning [59]
Abstract:In this paper we describe how the Moodle Learning Management System is beingused to support the development of Nucleo learning scenarios in courses with a total of morethan 300 students. The approach is implemented by combining built-in tools of the LMS andspecific plug-ins. Plug-ins provide support for Vermunt’s ILS (used to build the teams), forassigning roles in the teams or managing groups, among others. Although this work is focusedon the Moodle platform, the paradigm can be repurposed and applied to different environments
Keywords: Nucleo, Moodle, Collaborative learning, Problem-Based learning
9. The Design of Open Source Educational Games for Secondary Schools[18]
Abstract:Moodle is online open source software aiming at course management. This paper
is focusing on the game module which has been created using php language and consistingof eight available games, which are “Crossword”, “Hangman”, “Snakes and Ladders”, “Cryp-tex”, “Millionaire”, “The hidden picture”, “Sudoku” and “Book with questions”. Their dataderive from question banks and dictionaries or pictionaries, created by their users, both teach-ers and students.
8
Keywords: Games, education, moodle
10. Extending Moodle to Better Support Computing Education[54][55]
Abstract: Learning Management Systems such as Moodle are popular teaching tools with
a broad spectrum of features. However, several aspects relevant for computing educationare typically missing. This includes the annotation of materials, such as scripts or exercises,the inclusion of slides, and the integration of algorithm visualizations. We present Moodleactivities that add these features to Moodle.
Keywords:Moodle, activity, annotation, visualization, VizCoSH, CALMS
11. A Moodle Course: Design and Implementation in English for Academic Purposes Instruction[44]
Abstract: This paper focuses on the use of Moodle as a course management system in teach-
ing General Academic Purposes English at an intermediate level of an intensive language pro-gram. After describing the Moodle course and providing examples of its content, advantagesof integrating it in teaching English as a Foreign Language (EFL) will be pinpointed. Also,problems and concerns about its use will be presented. Finally, recommendations for futuredevelopments of Moodle as an e-learning component in the program and in similar EFL pro-grams will be outlined, as informed by the described practice of designing and implementinga Moodle course.
Keywords:WebCT, Moodle, LMS
12. Integration of external tools in Virtual Learning Environments: main design issues and alternatives[5]
Abstract:This paper identifies the issues to be tackled when designing a VLE or a tool andthe effects that the different alternatives may have in the integration cost. Besides, the paperdiscusses the advantages and drawbacks of previous research proposals when dealing withsuch issues.
Keywords: Generic Service Integration, Virtual learning environment
13. Web Tool to Support Online Inquiries: Adapting Moodle to Meet Some of Tutors and TeachersNeeds [41]
Abstract: In this article, we will discuss a case study: the Web Tool to Support Online In-
quiries created by Tutors and Teachers. This tool consists on a module implemented in PHPand integrated with Moodle. It allows teachers and tutors to elaborate online inquiries andcollect answers given by students or co-workers. This tool allows the teaching community tocollect information that can be used as a start point to improve results on students or even ontheir institutions.
Keywords: LMS, Blackboard, Moodle
14. Using Moodle, an open source learning management system, to support a national teachingand learning collaboration[34]
Abstract: The paper discusses MEA’s adoption of Moodle as its Learning Management Sys-tem. It explores the pros and cons of open source products and the strategies necessary toensure successful adoption across multiple campuses. The paper provides a rationale for
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MEA’s selection of Moodle as its LMS, the opportunities this choice provides and outlinesthe strategies put in place to ensure its successful uptake.
Keywords: Mining Education Australia, learning management system
15. Investigation on security in LMS moodle[31]
Abstract: The open source learning management, LMS Moodle has been adopted by manypeople and organizations around the world because it offers a tightly integrated set of tools saidto be designed from a social constructive perspective. Moodle has been developed under thegeneral public license and many of its components were developed without a specific designdocumentation including its security services. Object oriented model of Moodle using ananalysis of its security services as well as solutions to its security vulnerabilities.
Keywords: Moodle, Virtual Learning Environment, Open Source Software, Web Attack, Se-curity
10
Chapter 4
Performance Testing Tools
1. Jmeter
2. LoadRunner
3. HTTP Perf
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Chapter 5
Performance of various servers
1. Performance measurements and modeling of database servers[20]
Abstract: In this paper we present some experiments on the MySQL database server. The
objective of the experiments was to investigate the high load dynamics for varying relationsizes and requests. We show that the dynamics for SELECT (read) requests can be modeledas a modified M/M/1 system, whereas, the dynamics for UPDATE (write) are completely dif-ferent. Our results can be used for designing control and optimization algorithms for databaseservers.
Keywords:MySQL database server,SELECT,UPDATE
2. Performance Issues of a Web Database [36]
Abstract: In this paper we analyse the performance of a typical Web database system with
different sizes of web pages and different sizes of database tables.Since a web server anda database server work simultaneously, the response time in dealing with a request to thedatabase can not be seen simply as the webserver service time plus database service time. Theperformance metrics and optimisation suggestions are made on the basis of the analysis of therelationship between them.
Keywords: Transaction Processing Performance Council (TPC),Common Gateway Interface(CGI),Result Arrival Rate (RAR)
3. Models transformation to implement a Project-Based Collaborative Learning (PBCL) sce-nario: Moodle case study[1]
Abstract: In this paper, a Project-Based Collaborative Learning (PBCL) meta-model is pro-posed. It allows a teacher to build up a PBCL scenario and to implement it in a learning systemwhich is not designed to this learning method.
Keywords: Model Driven Architecture, Instructional Management Systems Learning Design,
4. An Integrated Moodle System Using VM Technology to Achieve Higher Availability and LowerTCO[40]
Abstract:These paper is discussing about replace Blackboard with Moodle and to introduce
virtual machine technology. Moodle is an open-source software LMS and runs on LAMP/LAPP(Linux, Apache, MySQL or PostgreSQL and PHP) environment. The key ideas of our the sys-tem configurations are: (1) use two server PCs, (2) run four web servers and two database/
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NFS servers on different virtual machines, and (3) introduce mirroring. The contents on NFSand database servers are assured by using ”lsyncd” for real time mirroring and “pgpool” fordatabase replication and fail over.
Keywords: Moodle, LAPP, High availability, Lower TCO(Total Cost Of).
5. TOWARDS THE LEARNING OBJECT MANAGEMENT SYSTEM AND DYNAMIC USEOF METADATA [24]
Abstract: In this paper we illustrate a dynamic approach in the use of the metadata and how
this concept can dramatically improve the management of Learning Objects. Specifically,the ideas elaborated in this paper rise from the experiences in managing Learning ObjectRepositories during three European funded projects:Sloop, Tenegen, and Sloop2desc.
Keywords:Open Educational Resources, Open Learning Objects, Communities of practice,Learning Object Management Systems, Web 2.0
6. The Care and Feeding of a Moodle Campus[63]
Abstract: These systems require a little more care and support to encourage faculty to adopt
and utilize them as a tool for their classrooms. In order to avoid the pitfalls of neglect andindifference that was exhibited towards our previous learning management system, the ClientServices department at Lewis & Clark College had to embark on a mission of evangelism toexcite the faculty about using Moodle. This paper will discuss the choice to move to Moodle,and the process to move faculty and students towards accepting Moodle as a part of not onlythe campus learning environment, but the campus community as a whole.
Keywords:Moodle, Learning Management System, Support, Faculty.
7. Moodle-Integrated Open Source Synchronous Teaching[48]
Abstract: This paper introduces an open source capability that combines the popular Moodle
asynchronous learning management system with a new synchronous online teaching/conferencingsystem called MIST/C. This combination is supporting online delivery of the Master’s pro-grams in our Computer Science Department effectively.
Keywords:Internet distance education, synchronous, asynchronous
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Chapter 6
Different techniques
1. SQL Server Query Optimization Techniques:Tips for writing efficent and faster queries[33]
Abstract: SQL statements can be used to retrieve data from the any database. To get same
results we need to write different SQL queries. For better performance we need to use best,faster and efficient queries. So we need SQL query tuning based on the business and userrequirements. This paper covers how these SQL queries can be optimized for better perfor-mance. Query optimization subject is very deep but we will try to cover the most importantpoints.
Keywords: Database administrator,User defined functions
2. NAM: A Network Adaptable Middleware to Enhance Response Time of Web Services [25]
Abstract: A Web Service may employ a loss-less compression technique, e.g., Zip, XMill,
etc., to reduce the size of an XML message in order to enhance its transmission time. Thissaving might be outweighed by the overhead of compressing the output of a Web Service ata server and decompressing it at a client. The primary contribution of this paper is NAM, amiddleware that strikes a compromise between these two factors in order to enhance responsetime. NAM decides when to compress data based on the available client and server processorspeeds, and network characteristics.
Keywords: Network Adaptable Middleware (NAM), Web Service Description Language(WSDL)
3. Improving Response Time and Throughput of Search Engine with Web Caching [6]
Abstract: Caching is a useful technique for Web systems that are accessed by a large number
of users. It enables a shorter average response time, it reduces the workload on back-endservers, and it reduces the overall amount of utilized bandwidth. This paper can be splitinto two parts. In the first part, we proposed Cached Search Algorithm (CSA) on top of themultiple search engines like Google, Yahoo and Bing and achieved the better response timewhile accessing the resulting web pages. In the second part, we design and implementedthe Cached Search Engine and the performance evaluated based on the training data (WEPSdataset [1]) and the test data (Mobile dataset). The Cached Search outperforms the betterby reducing the response time of search engine and to increase response throughput of thesearched results.
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Keywords: Cached Search Algorithm,Time To Live,Lowest Relative Value algorithm (LRV)
4. Solid State Disk: A New Storage Device for Video Storage Server[51]
Abstract: This paper discusses the architecture and the advantage offered by SSD in using thedrive as a storage device in video server.
Keywords: Solid state disk, continuous media, universal serial bus (USB)
5. Flash SSD vs HDD: High Performance Oriented Modern Embedded and Multimedia StorageSystems[52]
Abstract: In this paper, the performance is evaluated and compared of both types of NANDflash memories with HDD. Experimental results based on two modern real-time benchmarksare provided and discussed to give the better idea to users for suitable storage devices for theirembedded and multimedia applications
Keywords: flash memory; SSD; SLC; MLC; HDD; performance evaluation; embedded sys-tems; multimedia applications
6. Moodle Integration of an Automated Account Enabling System and a User Status CollectionSystem[39]
Abstract:In this paper, we present a Moodle integrated system that combines an automated
account enabling subsystem (AAES) and a user logon status collection subsystem in a com-puter lab (CULS).These tools help us reduce educational costs, increase services, and increasecomputer system security.
Keywords: Design, Management, Experimentation.
7. Web Applications: A Proposal to Improve Response Time and Its Application to MOODLE[65]
Abstract: This paper covers some of the most advanced optimization techniques for web
servers and web applications applied to a Modular Object Oriented Distance Learning Envi-ronment based on PHP 5 and Apache 2.
Keywords: web, optimization, web application, Moodle, PHP, Apache, javascript, HTTP,DNS, CSS, XHTML, HTML, minification, cookies.
8. Comparative Studies of Load Balancing With Control and Optimization Techniques[21]
Abstract: In this paper we formulate load balancing as a constrained optimization problem
and investigate two load balancing controllers based on feedback control theory and opti-mization theory. We show the difference and equivalence between their design methods andcriteria.Furthermore, our studies on a DB2 Universal Database Server reveal their performancedifference regarding to system noise and workload variations.
Keywords:online transaction processing (OLTP) workload,Decision support systems (DSS)workload,load balancing.
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9. Self-Tuning Database Systems: A Decade of Progress[11]
Abstract: In this paper we discuss advances in self-tuning database systems over the past
decade, based on our experience in the AutoAdmin project at Microsoft Research. This paperprimarily focuses on the problem of automated physical database design. We also highlightother areas where research on self-tuning database technology has made significant progress.We conclude with our thoughts on opportunities and open issues.
Keywords:Index Tuning Wizard (ITW),Universal Database
10. Scheduling Strategy to Improve Response Time for Web Applications [13]
Abstract: We propose a tunable scheduling strategy that lies between FIFO and shortest,
based on the value of a Alpha. If Alpha is set to zero then this strategy is just FIFO. LargerAlpha gets us closer to shortest strategy which is known to provide optimal response time.However, unlike the shortest, proposed scheduling strategy is starvation free. This schedulingstrategy, called Alpha schedul-ing with no preemption, allows to improve overall responsetime per HTTP request more than 3 times under heavy load
Keywords:HTTP Requests,Scheduling,response time
11. Managing Databases with Binary Large Objects [12]
Abstract: We present recommendations on Performance Management for databases support-
ing Binary Large Objects (BLOB) that, under a wide range of conditions, save both storagespace and database transactions processing time. The research shows that for database ap-plications where ad hoc retrieval queries prevail, storing the actual values of BLOBs in thedatabase may be the best choice to achieve better performance, whereas storing BLOBs ex-ternally is the best approach where multiple Delete/Insert/Update operations on BLOBs dom-inate. Performance measurements are used to discover System Performance Bottlenecks andtheir resolution.
Keywords: Binary Large Objects(BLOB),
12. SQL Query Optimization Methods of Relational Database System[35]
Abstract:This paper introduces the SQL Tuning Advisor to help you tune SQL statements.You can then use the recommendations of this advisor to rewrite poorly performing SQL code.I begin the chapter with a discussion of how to approach performance tuning. More than thespecific performance improvement techniques you use, your approach to performance tuningdetermines your success in tuning a recalcitrant application system.
Keywords: Query optimization, SQL Server, Relational database
13. Carrying on the eLearning process with a Workflow Management Engine[10]
Abstract: In this paper we present Virtual Campus, a research project sponsored by Microsoft
Research (UK) and developed at Politecnico di Milano, that exploits a workkflow engine to en-acts the fruition of structured courses. Our platform provides both an authoring and a fruitionenvironment. The former allows teachers to definene and customize learning paths, publish-ing them as workflows. The fruition environment enacts the workflows and guides learners
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through the related learning paths. We also describe an experience in using the platform dur-ing a Software Engineering course composed by heterogeneous activities (lectures, studyingactivities, cooperative sessions of work, and exams).
Keywords:Workfloow Mgmt Systems, E-Learning, Learning Objects
14. The “Jigsaw” Collaborative Method in e-Learning Environment Moodle[62]
Abstract: The present paper presents a realization of a block for organizing and applying the
Jigsaw collaborative learning method in the Moodle system. The didactic and organizationalcharacteristics of the Jigsaw method are introduced. A model is offered for the realizationof the method in an e-learning environment. Discussed is the modification of the databaseschema of Moodle needed for the application of the Jigsaw method. The functionalities aredescribed of the block offered for the realization of the method. Finally, possible applicationsof the method are presented.
Keywords:e-learning, collaborative learning, “Jigsaw method”, Moodle
15. Highly reliable low power Solid-State Drives (SSDs)[60]
Abstract: This paper provides a comprehensive review on various state-of-the-art memorysystem architectures and related memory circuits for the green high performance computing.
Keywords: SSD; NAND flash memory ; storage class memory ; signal processing ; ECC
16. Maze—Moodle Module for Games of Exercises[61]
Abstract: This systems paper describes an activity module “maze” for the Moodle open
source learning environment. This can be used to turn collections of exercises into a prob-lem solving game. Presentation of exercises as a game has some potential to increase the timespent by students on problem solving.
Keywords:Educational games, Moodle, activity module.
17. Digital CS1 Study Pack Based on Moodle and Python[49][50]
Abstract: This demonstration reveals instructor and student perspectives to the ”Python First”
digital pack. In particular, we demonstrate how instructors can use standard Moodle function-ality to customize and manage digital packs. We also demonstrate several Moodlesupported,Python-based self-guided labs.
Keywords:Python, Moodle, course management system, active learning
18. Peer Assessments Using the Moodle Workshop Tool[22]
Abstract: In our junior-level Software Development course, students are required to read and
review several journal articles, producing a written review of 2-4 pages. Students are thenrequired to use the Workshop tool to read and assess the work of several of their peers usingan instructorsupplied rubric. In this Tip we describe the Workshop tool, how it is set up forstudent use, and the results of several experiences with this approach.
Keywords:Software development, Computer science education, Peer review,Assessment, Moo-dle.
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19. Development of a New MOODLE Module for a Basic Course on Computer Architecture[16][17]
Abstract: The new module inherits a part of its functionality from a specific LMS previously
developed by the authors, that has been in use from academic year 2004 , widely proving itsusefulness. It has been re-designed according to the Moodle philosophy, making possible toeasily extend its application to other similar subjects. The choice for Moodle is motivated byits modular organization based on free software like PHP and MySQL. From the developerpoint of view, this allows to add new modules using well-known interfaces. As Moodle iscurrently used by the Virtual Campus of our university, this new module breaks the isolationof the previous platform as refers to activities like forums, messages or event signaling.
Keywords:LMS, Moodle, Computer Architecture, automatic assessment.
20. Program Animation Activities in Moodle[42][43]
Abstract: This poster introduces a Moodle module oriented to include program animation
activities using Jeliot 3. By installing it, teachers can easily define animation activities thatstudents are requested to complete within the moodle environment.
Keywords:Program Animation, LMS, Jeliot 3, Moodle
21. Applicability of Data Mining Algorithms for Recommendation System in E-Learning[2]
Abstract: In this paper we consider the applicability of data mining algorithms such as clus-
tering & association rule algorithm for recommending the courses to the student in E-LearningSystem e.g. the student who liked to study the course “Operating System” is quite like to studythe course “Distributed System”. We develop the algorithm in java which is the combinationof Simple K-means clustering & Apriori association rule algorithm. The result we obtainedusing these combinations are compared with the result we get using open source data miningtool, Weka & present the same. Results using this developed algorithm contain more numberof association rules as compare to the result we obtained using the Weka.
Keywords:Weka, Apriori Association Rule Algorithm, Simple Kmeans Clustering Algorithm,Moodle.
22. Can Learning to Use Moodle Alter Teachers’ Approaches to Teaching?[30]
Abstract: The findings indicate that teachers with more teaching experience may have more
confidence to use OLEs in a constructivist way. In this study, OLEs, especially with the useof Web 2.0 tools, were expected to provide a process for negotiation of student control andexpression in a way that motivates students and supports learning.
Keywords:Moodle, pedagogy, social constructivism, professional development community
23. A service oriented architecture to provide data mining services for non-expert data miners[67]
Abstract: This work joins both facets. It describes a data mining service addressed to nonexpert data miners which can be delivered as Software as a Service. Its main advantage is thatby simply indicating where the data file is, the service itself is able to perform all the process.
Keywords: Analytics service BI-as-a-Service Knowledge discovery database Data miningService-oriented architecture Web Services
18
Chapter 7
Conclusion
19
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