Software Engineering Commons^™

Samats : Semi-Automated Modelling And Texturing System, Joe Hegarty

Masters

The creation of detailed 3D (three-dimensional) building models has become an area of considerable research over the last couple of decades. The accurate modelling of buildings offers LBS (Location Based Services) applications in planning, cultural heritage, tourism and e-commerce among others. The approach taken by the majority of contemporary modelling systems that use terrestrial imagery taken from arbitrary locations requires the user to carry out manual correspondences across the image set. These correspondences are used for two purposes. Firstly, the correspondences are used to determine the exterior orientation parameters (position and orientation) of the cameras used to capture each image. …

Testcase Tool, John Louis Van Hemert

Honors Program Theses

The title of my project is "TestCASE Tool." TestCASE Tool is the name, or label, I assigned to the software application that I created for this project. The application is a Tool for storing and reporting data in software testing projects. A Test Case consists of a planned action within a system, the expected result of that action and an assessment of whether the expected result occurred. The acronym, CASE, stands for Computer Aided Software Engineering, which is the software tool genre to which my application belongs.

Good/Fast/Cheap: Contexts, Relationships And Professional Responsibility During Software Development, Marty J. Wolf, Frances S. Grodzinsky,

School of Computer Science & Engineering Faculty Publications

Engineering requires tradeoffs [23]. When engineering computer applications, software engineers should consider the costs and benefits to humans as an integral part of the software development process. In this paper we focus on reliability, a central aspect of software quality, and the influence of relationships and various software development contexts on the software developer.

Implementation Of Labcreator And The Integration Of Cyberlab, Kang Zhao

Master's Theses and Doctoral Dissertations

With the development of the World Wide Web, online courses are becoming more and more popular in modern science education. CyberLab aims to solve an important issue in distance science education -- laboratory experiments in online courses. It is a toolkit that handles creation, exportation, and execution of virtual experiments (within web browsers). It consists of LabCreator and LabExecutor. With LabCreator, instructors can create virtual experiments and export them into intermediate files. Students can download those files from online course websites and execute them in LabExecutor on their own computers.

The paper reports on the completion of two important tasks …

Towards Better Quality Specification Miners, David Lo, Siau-Cheng Khoo

Research Collection School Of Computing and Information Systems

Softwares are often built without specification. Tools to automatically extract specification from software are needed and many techniques have been proposed. One type of these specifications – temporal API specification – is often specified in the form of automaton (i.e., FSA/PFSA). There have been many work on mining software temporal specification using dynamic analysis techniques; i.e., analysis of software program traces. Unfortunately, the issues of scalability, robustness and accuracy of these techniques have not been comprehensively addressed. In this paper, we describe a framework that enables assessments of the performance of a specification miner in generating temporal specification of software …

Development Of Integrated Process Simulation System Model For Spent Fuel Treatment Facility (Sftf) Design, Yitung Chen, Sean Hsieh

Separations Campaign (TRP)

The overall goal of this project is the creation of a framework that combines all the strengths of AMUSE’s complicated calculations, well-established commercial system process packages, and TRPSEMPro’s flexible parameter optimization modules. Development of the process simulation code can be done using the solvent extraction process at Argonne National Laboratory in collaboration with the UNLV Nevada Center for Advanced Computational Methods.

The major objectives are the following:

• Develop a framework for simulating the Spent Fuel Treatment Facility (SFTF) process using AMUSE code, commercial process package, such as ASPEN-PLUS, and system engineering model.
• Develop a middleware package that can communicate between …

Matrix: Adaptive Middleware For Distributed Multiplayer Games, Rajesh Krishna Balan, Maria Ebling, Paul Castro, Archan Misra

Research Collection School Of Computing and Information Systems

Building a distributed middleware infrastructure that provides the low latency required for massively multiplayer games while still maintaining consistency is non-trivial. Previous attempts have used static partitioning or client-based peer-to-peer techniques that do not scale well to a large number of players, perform poorly under dynamic workloads or hotspots, and impose significant programming burdens on game developers. We show that it is possible to build a scalable distributed system, called Matrix, that is easily usable by game developers. We show experimentally that Matrix provides good performance, especially when hotspots occur.

Giving Users The Steering Wheel For Guiding Resource-Adaptive Systems, Joao Sousa, Rajesh Krishna Balan, Vahe Poladian, David Garlan, Mahadev Satyanarayanan

Research Collection School Of Computing and Information Systems

Addressing resource variation plays an increasingly important role in engineering today's software systems. Research in resource-adaptive applications takes an important step towards addressing this problem. However, existing solutions stop short of addressing the fact that different user tasks often have specific goals of quality of service, and that such goals often entail multiple aspects of quality of service. This paper presents a framework for engineering software systems capable of adapting to resource variations in ways that are specific to the quality goals of each user task. For that, users are empowered to specify their task-specific preferences with respect to multiple …

An Efficient And Robust Computational Framework For Studying Lifetime And Information Capacity In Sensor Networks, Enrique J. Duarte-Melo, Mingyan Liu, Archan Misra

Research Collection School Of Computing and Information Systems

In this paper we investigate the expected lifetime and information capacity, defined as the maximum amount of data (bits) transferred before the first sensor node death due to energy depletion, of a data-gathering wireless sensor network. We develop a fluid-flow based computational framework that extends the existing approach, which requires precise knowledge of the layout/deployment of the network, i.e., exact sensor positions. Our method, on the other hand, views a specific network deployment as a particular instance (sample path) from an underlying distribution of sensor node layouts and sensor data rates. To compute the expected information capacity under this distribution-based …

Integration Of The Shel Model With The Flight Operational Quality Assurance (Foqa) Program, James T. Schultz, Scott Forn, Marian C. Schultz

Publications

The SHEL Model has been used to explore relationships between liveware, environmental, hardware and software factors. This study attempts to integrate Flight Operational Quality Assurance (FOQA) program data with the SHEL model. Aircraft record data that can be used to monitor the human interface within the entire system, plus identify faults and potential failures within the system before a major accident or incident occurs. These data have existed for over four decades, and FOQA offers a way to both analyze and act upon them. The relationships between the SHEL model and FOQA data can help to ensure our nation's skies …

And/Or Graph And Search Algorithm For Discovering Composite Web Services, Qianhui (Althea) Liang, Stanley Y. W. Su

Research Collection School Of Computing and Information Systems

This paper presents a formalization of the Web Service composition problem as a search problem in an AND/OR graph, and a search algorithm for searching the graph to identify composite service(s) that satisfies a Web Service request. Given a service request that can only be satisfied by a composition of Web Services, we identify the service categories that are relevant to the request and dynamically construct an AND/OR graph to capture the input/output dependencies among the Web Services of these service categories. The graph is modified, based on the information provided in the service request. The search algorithm is then …

Informal Animation Sketching With K-Sketch, Richard C. Davis

Research Collection School Of Computing and Information Systems

Animation is a powerful medium that is accessible to few, because current animation tools are extremely complex. This complexity arises partially from current tools’ focus on precise, often unnecessary details and partially from the difficulty of finding a small but sufficiently powerful set of tool features. We are designing K-Sketch, an informal 2D animation tool that uses sketching and demonstration to radically reduce the time needed to create an animation. Our field studies investigating the needs of current anima-tion tool users and would-be users are helping us to mini-mize complexity by showing us how to prioritize the many possible tool …

Low Latency Multimedia Broadcast In Multi-Rate Wireless Meshes, Chun-Tong Chou, Archan Misra

Research Collection School Of Computing and Information Systems

In a multi-rate wireless network, a node can dynamically adjust its link transmission rate by switching between different modulation schemes. For the current IEEE802.11a/b/g standards, this rate adjustment is limited to unicast traffic only while multicast and broadcast traffic is always transmitted at the lowest possible rate. In this paper, we consider a novel type of multi-rate mesh networks where a node can dynamically adjust its link layer multicast rates to its neighbours. In particular, we consider the problem of realising low latency network-wide broadcast in this type of multi-rate wireless meshes. We will first show that the multi-rate broadcast …

Forms Of Expression For Designing Visual Languages For Animation, Richard C. Davis, James A. Landay

Research Collection School Of Computing and Information Systems

We present further steps in our research into visual languages for animation. Animation is a rich mode of communication that is currently accessible to few, because animation systems are complex. Some systems try to make animation simple but put severe limits on users’ creative expression. Our field studies are demonstrating that would-be animators need to express animation in a wide variety of ways. We are developing a taxonomy of forms of expression for animation that will help the designers of visual languages for animation to determine which expressive forms to support. Our end goal is to build animation sketching systems …

Making Decision In Requirement Change Management, Saffena Ramzan, Naveed Ikram

International Conference on Information and Communication Technologies

Requirement change management a significant activity, which is performed through out the development of the software and even during the maintenance phase. It is the core activity to obtain one of the main objectives of software development, which is to satisfy the evolving needs of the customers. Software requirements are linked and dependent on other requirements and changing one requirement definitely affects interlinked requirements. Impact analysis is the crux of requirement change management which is to obtain with the change of requirements, so that the scope of that change is identified. Traceability is the pre-requisite to acquire proper impact analysis. …

Enhancement Of Software Engineering By Shifting From Software Product To Software Service, Muhammad Saeed, Muhammad Jaffar-Ur- Rehman

International Conference on Information and Communication Technologies

Software development has always been a supply side affair, in which domain experts were the main requirement providers. Software engineers have been creating new technologies, frameworks and methodologies but this has made the software engineering job more complex. Recently all this has been looked at from demand-side prospective. So a new concept of Service Based Software Engineering is shaping up which look at the software as a service rather then a product. This paper is going to analysis the fundamental requirements of such a paradigm shift, by first gathering the concept and then translating this to a workable solution. Different …

An Investigation Into The Skills Gap In The Software Industry Of Pakistan, Zareen Sharf, Dr. Wasim A. Khan

International Conference on Information and Communication Technologies

Software Industry workers require an adequate skill set to gain maximum output from the effective use of technology. The purpose of this study is to explore the nature of actual and desired software developer, jobs skill set. Survey methodology will be used to obtain reports of actual skill level and those desired to define common dimensions of the software developer skill set. Anticipated results will add to the existing body of IT job skills knowledge and may provide practice with job development and career planning guidance. We also intend to propose a skill standard for the software industry of Pakistan …

Implementation And Analysis Of Cmmi's Configuration Management Process Area; Applicable To "Defined" Level - 3, Ahmad Luqman

International Conference on Information and Communication Technologies

Enterprise Resource Planner (ERP) is a strategically important tool as integrated business application for long-term success in an increasingly competitive global market. This system requires the integration of data and business processes across the whole enterprise. In order to develop a good quality product there is a need of applying proper model. It becomes more costly in terms of training, appraisals, and improvement activities while applying multiple models that are not integrated within and across an organization. Where as Capability Maturity Model Integration is a set of integrated models that successfully addresses multiple disciplines and has integrated training support. Objective …

Enhanced Risk Analysis-Relative Impact Factorization, Basit Shahzad, Tanveer Afzal, Rizwana Irfan

International Conference on Information and Communication Technologies

Software engineering is an area of development which always has the risk factor present and software engineering can hardly be done on some straight line. So, the manager has to handle the dynamically changing circumstances in order to complete the job. The target of development team is to develop the software according to the requirements within specified time. Wide variety of risks I are present that may grab the development effort. A good manager must ensure that all measures have been taken against the risks that may possibly come. This paper focuses on determining the relative impact of risk factors …

Mapping Ogc Prince 2 To Sei Cmmi 1.1, Ahmad Luqman, Fida Hussain, Dr. S. Tauseef -Ur- Rehman

International Conference on Information and Communication Technologies

The Capability Maturity Model Integration (CMMI) version 1.1, developed by the Software Engineering Institute (SEI), USA and the PRoject IN Controlled Environment (PRINCE) version 2 developed by Central Computing and Telecommunications Agency (CCTA) now Office of Government Commerce (OGC) as UK Government standard for IT Project Management, share a common concern with Project and Quality management by improved process management. Both are driven by similar concerns and intuitively correlated. Organizations concerned with PRINCE 2 certification often question its overlap with the CMMI. We have looked into OGC PRINCE 2 process/components and map it to the different goals/practices in the SEI …

Towards Knowledge Morphing: A Triangulation Approach To Link Tacit And Explicit Knowledge, Fehmida Hussain, Syed Sibte Raza Abidi, Syed Ali Raza

International Conference on Information and Communication Technologies

Current knowledge management systems are largely designed to deal with a single knowledge modality. Given the diversity of knowledge modalities that encompass any given topic/problem it is reasonable to demand access and use of all available knowledge, irrespective of their representation modality, to derive a knowledge-mediated solution. This calls for selecting all knowledge elements (represented in different modalities) that are relevant to the solution of the problem at hand. Thus here we pursue the specification and implementation of such a knowledge-mediated solution using a triangulation approach leading to Knowledge Morphing. In this paper we present a tacit-explicit knowledge morphing (TEKM) …

Using Software Engineering Principles To Develop Reusable Business Rules, Saqib Ali, Ben Soh, Torab Torabi

International Conference on Information and Communication Technologies

Nowadays, businesses need a system that can provide flexibility, reusability and simplicity for their business solutions. However, if business logics or rules are implemented using procedural paradigms, then the business systems will become more complex. In this paper we treat business logics separate from system logics, whereby we analyse a business by describing its rules and developing a set of rule statements. These business rules will be treated as a separate component in the design and implementation of the system. We have found that our proposed method leads to a system, which is more customisable, flexible, efficient, and reusable, in …

A Dynamic Weight Assignment Approach For Ir Systems, M. Shoaib, Prof Dr. Abad Ali Shah, A. Vashishta

International Conference on Information and Communication Technologies

Weights are assigned to the extracted keywords for partial matching and computing ranking in an IR system. Weight assignment technique is suggested by the IR model that is used for an IR system. Currently suggested weight assignment techniques are static which means that once weight is assigned a keyword it remains unchanged during life-span of an IR system. In this paper, we suggest a dynamic weight assignment technique. This technique can be used by any IR model that supports partial matching.

Keynote: Hexagonal Structure For Intelligent Vision, Xiangjian He, Wenjing Jia

International Conference on Information and Communication Technologies

Using hexagonal grids to represent digital images have been studied for more than 40 years. Increased processing capabilities of graphic devices and recent improvements in CCD technology have made hexagonal sampling attractive for practical applications and brought new interests on this topic. The hexagonal structure is considered to be preferable to the rectangular structure due to its higher sampling efficiency, consistent connectivity and higher angular resolution and is even proved to be superior to square structure in many applications. Since there is no mature hardware for hexagonal-based image capture and display, square to hexagonal image conversion has to be done …

Goods Movement Security: An Information Technology Problem, Jens G. Pohl

Collaborative Agent Design (CAD) Research Center

This paper discusses the security problems associated with the movement of goods across international in-land borders and at ocean ports. The author proposes an information technology solution approach that is based on the profiling of international shipments. The collection of data describing the end-to-end movement of a shipment from the initial acquisition transactions, throughout the various transshipment stages, to the final delivery, allows intelligent software to assist customs and homeland security officials to determine the risks associated with the shipment long before it reaches the inspection point. The technical basis and architecture of the SecureOrigins™ software system is described. Designed …

Personalization Of Web Services: A Study On The Fit Between Web Tasks And Personalization Mechanisms, Fiona Fui-Hoon Nah, Keng Siau, Min Ling

Research Collection School Of Computing and Information Systems

Personalization is increasingly being considered an important ingredient of Web applications. In most cases, personalization techniques and mechanisms are used for tailoring information services to user needs. It is motivated by the recognition that a user has needs, and meeting them successfully is likely to lead to a satisfying relationship and re-use of the Web services offered. However, if the personalization mechanisms do not match the needs depicted by the tasks, it will decrease user satisfaction and performance. In this research, we use the cognitive fit theory to examine the fit between personalization mechanisms and Web tasks.

Impact On Open Source Software Performance: A View From Social Structure, Y. Long, Keng Siau

Research Collection School Of Computing and Information Systems

Open source software (OSS) has drawn increasing attention from both practitioners and researchers in recent years. However, few empirical studies have investigated the interaction process of OSS teams during OSS development. This research has two primary objectives. The first is to study the social structure of OSS teams. The second is to investigate the factors impacting the social structure of OSS teams as well as the effects of the social structure on OSS performance. Based on the social structure and social network theory, and group-related theories, this paper first presented a general research framework, then discussed research methodology, and finally …

Middleware Architecture For Evaluation And Selection Of 3rd Party Web Services For Service Providers, Dipanjan Chakraborty, Suraj K. Jaiswal, Archan Misra, Amit A. Nanavati

Research Collection School Of Computing and Information Systems

This paper presents an architecture to facilitate efficient evaluation and selection of 3rd party Web services for service providers. Most service provider architectures have primarily focused on providing Web service front ends to legacy systems, aggregating and delivering services via workflows. These architectures primarily considered static business contracts between the service provider and its (Web-service enabled) business partners. This approach makes these architectures inflexible to variations in business requirement, partners' performance and customer requirements. Our architecture provides a flexible means for service providers to optimize business performance. Based on the historical performance, extant context, and optimising business rules, the appropriate …

Synthesis Of Distributed Processes From Scenario-Based Specifications, Jun Sun, Jin Song Dong

Research Collection School Of Computing and Information Systems

Given a set of sequence diagrams, the problem of synthesis is of deciding whether there exists a satisfying object system and if so, synthesize one automatically. It is crucial in the development of complex systems, since sequence diagrams serve as the manifestation of use cases and if synthesizable they could lead directly to implementation. It is even more interesting (and harder) if the synthesized object system is distributed. In this paper, we propose a systematic way of synthesizing distributed processes from Live Sequence Charts. The basic idea is to first construct a CSP specification from the LSC specification, and then …

Descriptive Naming Of Context Data Providers, Norman H. Cohen, Paul Castro, Archan Misra

Research Collection School Of Computing and Information Systems

Much context data comes from mobile, transient, and unreliable sources. Such resources are best specified by descriptive names identifying what data is needed rather than which source is to provide it. The design of descriptive names has important consequences, but until now little attention has been focused on this problem. We propose a descriptive naming system for providers of context data that provides more flexibility and power than previous naming systems by classifying data providers into “provider kinds” that are organized in an evolving hierarchy of subkinds and superkinds. New provider kinds can be inserted in the hierarchy not only …