WorldWideScience

Sample records for modeling software developed

  1. Motorola Secure Software Development Model

    Directory of Open Access Journals (Sweden)

    Francis Mahendran

    2008-08-01

    Full Text Available In today's world, the key to meeting the demand for improved security is to implement repeatable processes that reliably deliver measurably improved security. While many organizations have announced efforts to institutionalize a secure software development process, there is little or no industry acceptance for a common process improvement framework for secure software development. Motorola has taken the initiative to develop such a framework, and plans to share this with the Software Engineering Institute for possible inclusion into its Capability Maturity Model Integration (CMMI®. This paper will go into the details of how Motorola is addressing this issue. The model that is being developed is designed as an extension of the existing CMMI structure. The assumption is that the audience will have a basic understanding of the SEI CMM® / CMMI® process framework. The paper will not describe implementation details of a security process model or improvement framework, but will address WHAT security practices are required for a company with many organizations operating at different maturity levels. It is left to the implementing organization to answer the HOW, WHEN, WHO and WHERE aspects. The paper will discuss how the model is being implemented in the Motorola Software Group.

  2. SWOT Analysis of Software Development Process Models

    Directory of Open Access Journals (Sweden)

    Ashish B. Sasankar

    2011-09-01

    Full Text Available Software worth billions and trillions of dollars have gone waste in the past due to lack of proper techniques used for developing software resulting into software crisis. Historically , the processes of software development has played an important role in the software engineering. A number of life cycle models have been developed in last three decades. This paper is an attempt to Analyze the software process model using SWOT method. The objective is to identify Strength ,Weakness ,Opportunities and Threats of Waterfall, Spiral, Prototype etc.

  3. Impact of Agile Software Development Model on Software Maintainability

    Science.gov (United States)

    Gawali, Ajay R.

    2012-01-01

    Software maintenance and support costs account for up to 60% of the overall software life cycle cost and often burdens tightly budgeted information technology (IT) organizations. Agile software development approach delivers business value early, but implications on software maintainability are still unknown. The purpose of this quantitative study…

  4. Impact of Agile Software Development Model on Software Maintainability

    Science.gov (United States)

    Gawali, Ajay R.

    2012-01-01

    Software maintenance and support costs account for up to 60% of the overall software life cycle cost and often burdens tightly budgeted information technology (IT) organizations. Agile software development approach delivers business value early, but implications on software maintainability are still unknown. The purpose of this quantitative study…

  5. Model Oriented Approach for Industrial Software Development

    Directory of Open Access Journals (Sweden)

    P. D. Drobintsev

    2015-01-01

    Full Text Available The article considers the specifics of a model oriented approach to software development based on the usage of Model Driven Architecture (MDA, Model Driven Software Development (MDSD and Model Driven Development (MDD technologies. Benefits of this approach usage in the software development industry are described. The main emphasis is put on the system design, automated code generation for large systems, verification, proof of system properties and reduction of bug density. Drawbacks of the approach are also considered. The approach proposed in the article is specific for industrial software systems development. These systems are characterized by different levels of abstraction, which is used on modeling and code development phases. The approach allows to detail the model to the level of the system code, at the same time store the verified model semantics and provide the checking of the whole detailed model. Steps of translating abstract data structures (including transactions, signals and their parameters into data structures used in detailed system implementation are presented. Also the grammar of a language for specifying rules of abstract model data structures transformation into real system detailed data structures is described. The results of applying the proposed method in the industrial technology are shown.The article is published in the authors’ wording.

  6. Model Driven Software Development for Agricultural Robotics

    DEFF Research Database (Denmark)

    Larsen, Morten

    The design and development of agricultural robots, consists of both mechan- ical, electrical and software components. All these components must be de- signed and combined such that the overall goal of the robot is fulfilled. The design and development of these systems require collaboration between...... processing, control engineering, etc. This thesis proposes a Model-Driven Software Develop- ment based approach to model, analyse and partially generate the software implementation of a agricultural robot. Furthermore, Guidelines for mod- elling the architecture of an agricultural robots are provided......, assisting with bridging the different engineering disciplines. Timing play an important role in agricultural robotic applications, synchronisation of robot movement and implement actions is important in order to achieve precision spraying, me- chanical weeding, individual feeding, etc. Discovering...

  7. Architecture design in global and model-centric software development

    NARCIS (Netherlands)

    Heijstek, Werner

    2012-01-01

    This doctoral dissertation describes a series of empirical investigations into representation, dissemination and coordination of software architecture design in the context of global software development. A particular focus is placed on model-centric and model-driven software development.

  8. Architecture design in global and model-centric software development

    NARCIS (Netherlands)

    Heijstek, Werner

    2012-01-01

    This doctoral dissertation describes a series of empirical investigations into representation, dissemination and coordination of software architecture design in the context of global software development. A particular focus is placed on model-centric and model-driven software development.

  9. Developing Project Duration Models in Software Engineering

    Institute of Scientific and Technical Information of China (English)

    Pierre Bourque; Serge Oligny; Alain Abran; Bertrand Fournier

    2007-01-01

    Based on the empirical analysis of data contained in the International Software Benchmarking Standards Group(ISBSG) repository, this paper presents software engineering project duration models based on project effort. Duration models are built for the entire dataset and for subsets of projects developed for personal computer, mid-range and mainframeplatforms. Duration models are also constructed for projects requiring fewer than 400 person-hours of effort and for projectsre quiring more than 400 person-hours of effort. The usefulness of adding the maximum number of assigned resources as asecond independent variable to explain duration is also analyzed. The opportunity to build duration models directly fromproject functional size in function points is investigated as well.

  10. SOFTWARE DEVELOPMENT MODEL FOR ETHNOBILINGUAL DICTIONARIES

    Directory of Open Access Journals (Sweden)

    Melchora Morales-Sánchez

    2010-09-01

    Full Text Available A software development integral model for a dictionary to store and retrieve textual, visual, and most important, incorporating the audio of oral language. Taking into account both the characterization of indigenous cultural reality and the technical aspects of software construction. Such model consists of the next phases: context description, lexicographic design, computer design and multimedia, construction and tests of the application. There isn´t doubt about the influence of the contact of Spanish language with the variety of languages spoken throughout Latin-America causing the most diverse and extensive communications. Causing that in the interior of communities are interested in preserving their language tongue for people to identify themselves with their own roots and transmit this legacy to the next generations. The model its design to develop dictionary software with factors that are certain in indigenous reality as they are: low budget, functioning in computers with limited resources and human resources with minimum capabilities. And is exemplified with the development of a Spanish-chatino dictionary spoken in the town of Santos Reyes Nopala, Oaxaca in the coast region of Mexico.

  11. Development of integrated software project planning model

    OpenAIRE

    Manalif, Ekananta; Capretz, Luiz Fernando; Ho, Danny

    2012-01-01

    As the most uncertain and complex project when compared to other types of projects, software development project is highly depend on the result of software project planning phase that helping project managers by predicting the project demands with respect to the budgeting, scheduling, and the allocation of resources. The two main activities in software project planning are effort estimation and risk assessment which has to be executed together because the accuracy of the effort estimation is ...

  12. Suitability of Modern Software Development Methodologies for Model Driven Development

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    Ruben Picek

    2009-12-01

    Full Text Available As an answer to today’s growing challenges in software industry, wide spectrum of new approaches of software development has occurred. One prominent direction is currently most promising software development paradigm called Model Driven Development (MDD. Despite a lot of skepticism and problems, MDD paradigm is being used and improved to accomplish many inherent potential benefits. In the methodological approach of software development it is necessary to use some kind of development process. Modern methodologies can be classified into two main categories: formal or heavyweight and agile or lightweight. But when it is a question about MDD and development process for MDD, currently known methodologies are very poor or better said they don't have any explanation of MDD process. As the result of research, in this paper, author examines the possibilities of using existing modern software methodologies in context of MDD paradigm.

  13. Distributed Software Development Modelling and Control Framework

    Directory of Open Access Journals (Sweden)

    Yi Feng

    2012-10-01

    Full Text Available With the rapid progress of internet technology, more and more software projects adopt e-development tofacilitate the software development process in a world-wide context. However, distributed softwaredevelopment activity itself is a complex orchestration. It involves many people working together without thebarrier of time and space difference. Therefore, how to efficiently monitor and control software edevelopmentin a global perspective becomes an important issue for any internet-based softwaredevelopment project. In this paper, we present a novel approach to tackle this crucial issue by means ofcontrolling e-development process, collaborative task progress and communication quality. Meanwhile, wealso present our e-development supporting environment prototype: Caribou, to demonstrate the viability ofour approach.

  14. Simulation Modeling of Software Development Processes

    Science.gov (United States)

    Calavaro, G. F.; Basili, V. R.; Iazeolla, G.

    1996-01-01

    A simulation modeling approach is proposed for the prediction of software process productivity indices, such as cost and time-to-market, and the sensitivity analysis of such indices to changes in the organization parameters and user requirements. The approach uses a timed Petri Net and Object Oriented top-down model specification. Results demonstrate the model representativeness, and its usefulness in verifying process conformance to expectations, and in performing continuous process improvement and optimization.

  15. A Bisimulation-based Hierarchical Framework for Software Development Models

    Directory of Open Access Journals (Sweden)

    Ping Liang

    2013-08-01

    Full Text Available Software development models have been ripen since the emergence of software engineering, like waterfall model, V-model, spiral model, etc. To ensure the successful implementation of those models, various metrics for software products and development process have been developed along, like CMMI, software metrics, and process re-engineering, etc. The quality of software products and processes can be ensured in consistence as much as possible and the abstract integrity of a software product can be achieved. However, in reality, the maintenance of software products is still high and even higher along with software evolution due to the inconsistence occurred by changes and inherent errors of software products. It is better to build up a robust software product that can sustain changes as many as possible. Therefore, this paper proposes a process algebra based hierarchical framework to extract an abstract equivalent of deliverable at the end of phases of a software product from its software development models. The process algebra equivalent of the deliverable is developed hierarchically with the development of the software product, applying bi-simulation to test run the deliverable of phases to guarantee the consistence and integrity of the software development and product in a trivially mathematical way. And an algorithm is also given to carry out the assessment of the phase deliverable in process algebra.  

  16. An Assessment between Software Development Life Cycle Models of Software Engineering

    Directory of Open Access Journals (Sweden)

    Er. KESHAV VERMA

    2013-03-01

    Full Text Available This research deals with an essential and important subject in Digital world. It is related with the software managing processes that inspect the part of software development during the development models, which are called as software development life cycle. It shows five of the development models namely, waterfall, Iteration, V-shaped, spiral and Extreme programming. These models have advantages and disadvantages as well. So, the main objective of this research is to represent dissimilar models of software development and make a comparison among them to illustrate the features and defects of every model.

  17. BRIDGE: A Model for Modern Software Development Process to Cater the Present Software Crisis

    CERN Document Server

    Mandal, Ardhendu

    2011-01-01

    As hardware components are becoming cheaper and powerful day by day, the expected services from modern software are increasing like any thing. Developing such software has become extremely challenging. Not only the complexity, but also the developing of such software within the time constraints and budget has become the real challenge. Quality concern and maintainability are added flavour to the challenge. On stream, the requirements of the clients are changing so frequently that it has become extremely tough to manage these changes. More often, the clients are unhappy with the end product. Large, complex software projects are notoriously late to market, often exhibit quality problems, and don't always deliver on promised functionality. None of the existing models are helpful to cater the modern software crisis. Hence, a better modern software development process model to handle with the present software crisis is badly needed. This paper suggests a new software development process model, BRIDGE, to tackle pr...

  18. Integrating Design Decision Management with Model-based Software Development

    DEFF Research Database (Denmark)

    Könemann, Patrick

    Design decisions are continuously made during the development of software systems and are important artifacts for design documentation. Dedicated decision management systems are often used to capture such design knowledge. Most such systems are, however, separated from the design artifacts...... of the system. In model-based software development, where design models are used to develop a software system, outcomes of many design decisions have big impact on design models. The realization of design decisions is often manual and tedious work on design models. Moreover, keeping design models consistent...

  19. Development and application of new quality model for software projects.

    Science.gov (United States)

    Karnavel, K; Dillibabu, R

    2014-01-01

    The IT industry tries to employ a number of models to identify the defects in the construction of software projects. In this paper, we present COQUALMO and its limitations and aim to increase the quality without increasing the cost and time. The computation time, cost, and effort to predict the residual defects are very high; this was overcome by developing an appropriate new quality model named the software testing defect corrective model (STDCM). The STDCM was used to estimate the number of remaining residual defects in the software product; a few assumptions and the detailed steps of the STDCM are highlighted. The application of the STDCM is explored in software projects. The implementation of the model is validated using statistical inference, which shows there is a significant improvement in the quality of the software projects.

  20. Dependability modeling and assessment in UML-based software development.

    Science.gov (United States)

    Bernardi, Simona; Merseguer, José; Petriu, Dorina C

    2012-01-01

    Assessment of software nonfunctional properties (NFP) is an important problem in software development. In the context of model-driven development, an emerging approach for the analysis of different NFPs consists of the following steps: (a) to extend the software models with annotations describing the NFP of interest; (b) to transform automatically the annotated software model to the formalism chosen for NFP analysis; (c) to analyze the formal model using existing solvers; (d) to assess the software based on the results and give feedback to designers. Such a modeling→analysis→assessment approach can be applied to any software modeling language, be it general purpose or domain specific. In this paper, we focus on UML-based development and on the dependability NFP, which encompasses reliability, availability, safety, integrity, and maintainability. The paper presents the profile used to extend UML with dependability information, the model transformation to generate a DSPN formal model, and the assessment of the system properties based on the DSPN results.

  1. A Simulation Model for the Waterfall Software Development Life Cycle

    CERN Document Server

    Bassil, Youssef

    2012-01-01

    Software development life cycle or SDLC for short is a methodology for designing, building, and maintaining information and industrial systems. So far, there exist many SDLC models, one of which is the Waterfall model which comprises five phases to be completed sequentially in order to develop a software solution. However, SDLC of software systems has always encountered problems and limitations that resulted in significant budget overruns, late or suspended deliveries, and dissatisfied clients. The major reason for these deficiencies is that project directors are not wisely assigning the required number of workers and resources on the various activities of the SDLC. Consequently, some SDLC phases with insufficient resources may be delayed; while, others with excess resources may be idled, leading to a bottleneck between the arrival and delivery of projects and to a failure in delivering an operational product on time and within budget. This paper proposes a simulation model for the Waterfall development proce...

  2. Software development for the economic model of R.Barro

    Science.gov (United States)

    Kalimoldayev, Maksat N.; Amirkhanova, Gulshat A.

    2016-12-01

    In this paper we describe the process of creating software for R.Barro economic model. The goal of the paper is the analysis of existing languages and platforms and selections of them as means for developing advanced software for modeling economic processes, and also the construction of algorithms and programs using traditional and modern methods of software development. Prototyping was selected as an approach for the development, it allows us to obtain in a short time the product, which is available for testing and further improvement in order to meet the requirements. The paper describes the version of the program that meets the recommended requirements, shows the schematic diagram of this program and describes its main functions.

  3. Model for Simulating a Spiral Software-Development Process

    Science.gov (United States)

    Mizell, Carolyn; Curley, Charles; Nayak, Umanath

    2010-01-01

    A discrete-event simulation model, and a computer program that implements the model, have been developed as means of analyzing a spiral software-development process. This model can be tailored to specific development environments for use by software project managers in making quantitative cases for deciding among different software-development processes, courses of action, and cost estimates. A spiral process can be contrasted with a waterfall process, which is a traditional process that consists of a sequence of activities that include analysis of requirements, design, coding, testing, and support. A spiral process is an iterative process that can be regarded as a repeating modified waterfall process. Each iteration includes assessment of risk, analysis of requirements, design, coding, testing, delivery, and evaluation. A key difference between a spiral and a waterfall process is that a spiral process can accommodate changes in requirements at each iteration, whereas in a waterfall process, requirements are considered to be fixed from the beginning and, therefore, a waterfall process is not flexible enough for some projects, especially those in which requirements are not known at the beginning or may change during development. For a given project, a spiral process may cost more and take more time than does a waterfall process, but may better satisfy a customer's expectations and needs. Models for simulating various waterfall processes have been developed previously, but until now, there have been no models for simulating spiral processes. The present spiral-process-simulating model and the software that implements it were developed by extending a discrete-event simulation process model of the IEEE 12207 Software Development Process, which was built using commercially available software known as the Process Analysis Tradeoff Tool (PATT). Typical inputs to PATT models include industry-average values of product size (expressed as number of lines of code

  4. Modeling and managing risk early in software development

    Science.gov (United States)

    Briand, Lionel C.; Thomas, William M.; Hetmanski, Christopher J.

    1993-01-01

    In order to improve the quality of the software development process, we need to be able to build empirical multivariate models based on data collectable early in the software process. These models need to be both useful for prediction and easy to interpret, so that remedial actions may be taken in order to control and optimize the development process. We present an automated modeling technique which can be used as an alternative to regression techniques. We show how it can be used to facilitate the identification and aid the interpretation of the significant trends which characterize 'high risk' components in several Ada systems. Finally, we evaluate the effectiveness of our technique based on a comparison with logistic regression based models.

  5. A Software Development Simulation Model of a Spiral Process

    Science.gov (United States)

    Mizell, Carolyn; Malone, Linda

    2007-01-01

    There is a need for simulation models of software development processes other than the waterfall because processes such as spiral development are becoming more and more popular. The use of a spiral process can make the inherently difficult job of cost and schedule estimation even more challenging due to its evolutionary nature, but this allows for a more flexible process that can better meet customers' needs. This paper will present a discrete event simulation model of spiral development that can be used to analyze cost and schedule effects of using such a process in comparison to a waterfall process.

  6. Software Testing and Verification in Climate Model Development

    Science.gov (United States)

    Clune, Thomas L.; Rood, RIchard B.

    2011-01-01

    Over the past 30 years most climate models have grown from relatively simple representations of a few atmospheric processes to a complex multi-disciplinary system. Computer infrastructure over that period has gone from punch card mainframes to modem parallel clusters. Model implementations have become complex, brittle, and increasingly difficult to extend and maintain. Existing verification processes for model implementations rely almost exclusively upon some combination of detailed analysis of output from full climate simulations and system-level regression tests. In additional to being quite costly in terms of developer time and computing resources, these testing methodologies are limited in terms of the types of defects that can be detected, isolated and diagnosed. Mitigating these weaknesses of coarse-grained testing with finer-grained "unit" tests has been perceived as cumbersome and counter-productive. In the commercial software sector, recent advances in tools and methodology have led to a renaissance for systematic fine-grained testing. We discuss the availability of analogous tools for scientific software and examine benefits that similar testing methodologies could bring to climate modeling software. We describe the unique challenges faced when testing complex numerical algorithms and suggest techniques to minimize and/or eliminate the difficulties.

  7. Development of the software generation method using model driven software engineering tool

    Energy Technology Data Exchange (ETDEWEB)

    Jang, H. S.; Jeong, J. C.; Kim, J. H.; Han, H. W.; Kim, D. Y.; Jang, Y. W. [KOPEC, Taejon (Korea, Republic of); Moon, W. S. [NEXTech Inc., Seoul (Korea, Republic of)

    2003-10-01

    The methodologies to generate the automated software design specification and source code for the nuclear I and C systems software using model driven language is developed in this work. For qualitative analysis of the algorithm, the activity diagram is modeled and generated using Unified Modeling Language (UML), and then the sequence diagram is designed for automated source code generation. For validation of the generated code, the code audits and module test is performed using Test and QA tool. The code coverage and complexities of example code are examined in this stage. The low pressure pressurizer reactor trip module of the Plant Protection System was programmed as subject for this task. The test result using the test tool shows that errors were easily detected from the generated source codes that have been generated using test tool. The accuracy of input/output processing by the execution modules was clearly identified.

  8. Pragmatic quality metrics for evolutionary software development models

    Science.gov (United States)

    Royce, Walker

    1990-01-01

    Due to the large number of product, project, and people parameters which impact large custom software development efforts, measurement of software product quality is a complex undertaking. Furthermore, the absolute perspective from which quality is measured (customer satisfaction) is intangible. While we probably can't say what the absolute quality of a software product is, we can determine the relative quality, the adequacy of this quality with respect to pragmatic considerations, and identify good and bad trends during development. While no two software engineers will ever agree on an optimum definition of software quality, they will agree that the most important perspective of software quality is its ease of change. We can call this flexibility, adaptability, or some other vague term, but the critical characteristic of software is that it is soft. The easier the product is to modify, the easier it is to achieve any other software quality perspective. This paper presents objective quality metrics derived from consistent lifecycle perspectives of rework which, when used in concert with an evolutionary development approach, can provide useful insight to produce better quality per unit cost/schedule or to achieve adequate quality more efficiently. The usefulness of these metrics is evaluated by applying them to a large, real world, Ada project.

  9. A PROPOSED MODEL OF AGILE METHODOLOGY IN SOFTWARE DEVELOPMENT

    OpenAIRE

    Anjali Sharma*, Karambir

    2016-01-01

    Agile Software development has been increasing popularity and replacing the traditional methods of software develop-ment. This paper presents the all neural network techniques including General Regression Neural Networks (GRNN), Prob-abilistic Neural Network (PNN), GMDH Polynomial Neural Network, Cascade correlation neural network and a Machine Learning Technique Random Forest. To achieve better prediction, effort estimation of agile projects we will use Random Forest with Story Points Approa...

  10. A SUPPLIER SELECTION MODEL FOR SOFTWARE DEVELOPMENT OUTSOURCING

    Directory of Open Access Journals (Sweden)

    Hancu Lucian-Viorel

    2010-12-01

    Full Text Available This paper presents a multi-criteria decision making model used for supplier selection for software development outsourcing on e-marketplaces. This model can be used in auctions. The supplier selection process becomes complex and difficult on last twenty years since the Internet plays an important role in business management. Companies have to concentrate their efforts on their core activities and the others activities should be realized by outsourcing. They can achieve significant cost reduction by using e-marketplaces in their purchase process and by using decision support systems on supplier selection. In the literature were proposed many approaches for supplier evaluation and selection process. The performance of potential suppliers is evaluated using multi criteria decision making methods rather than considering a single factor cost.

  11. Software development infrastructure for the HYBRID modeling and simulation project

    Energy Technology Data Exchange (ETDEWEB)

    Aaron S. Epiney; Robert A. Kinoshita; Jong Suk Kim; Cristian Rabiti; M. Scott Greenwood

    2016-09-01

    One of the goals of the HYBRID modeling and simulation project is to assess the economic viability of hybrid systems in a market that contains renewable energy sources like wind. The idea is that it is possible for the nuclear plant to sell non-electric energy cushions, which absorb (at least partially) the volatility introduced by the renewable energy sources. This system is currently modeled in the Modelica programming language. To assess the economics of the system, an optimization procedure is trying to find the minimal cost of electricity production. The RAVEN code is used as a driver for the whole problem. It is assumed that at this stage, the HYBRID modeling and simulation framework can be classified as non-safety “research and development” software. The associated quality level is Quality Level 3 software. This imposes low requirements on quality control, testing and documentation. The quality level could change as the application development continues.Despite the low quality requirement level, a workflow for the HYBRID developers has been defined that include a coding standard and some documentation and testing requirements. The repository performs automated unit testing of contributed models. The automated testing is achieved via an open-source python script called BuildingsP from Lawrence Berkeley National Lab. BuildingsPy runs Modelica simulation tests using Dymola in an automated manner and generates and runs unit tests from Modelica scripts written by developers. In order to assure effective communication between the different national laboratories a biweekly videoconference has been set-up, where developers can report their progress and issues. In addition, periodic face-face meetings are organized intended to discuss high-level strategy decisions with management. A second means of communication is the developer email list. This is a list to which everybody can send emails that will be received by the collective of the developers and managers

  12. Gammasphere software development

    Energy Technology Data Exchange (ETDEWEB)

    Piercey, R.B.

    1993-01-01

    Activities of the nuclear physics group are described. Progress was made in organizing the Gammasphere Software Working Group, establishing a nuclear computing facility, participating in software development at Lawrence Berkeley, developing a common data file format, and adapting the ORNL UPAK software to run at Gammasphere. A universal histogram object was developed that defines a file format and provides for an objective-oriented programming model. An automated liquid nitrogen fill system was developed for Gammasphere (110 Ge detectors comprise the sphere).

  13. Gammasphere software development

    Energy Technology Data Exchange (ETDEWEB)

    Piercey, R.B.

    1993-01-01

    Activities of the nuclear physics group are described. Progress was made in organizing the Gammasphere Software Working Group, establishing a nuclear computing facility, participating in software development at Lawrence Berkeley, developing a common data file format, and adapting the ORNL UPAK software to run at Gammasphere. A universal histogram object was developed that defines a file format and provides for an objective-oriented programming model. An automated liquid nitrogen fill system was developed for Gammasphere (110 Ge detectors comprise the sphere).

  14. Funding Research Software Development

    Science.gov (United States)

    Momcheva, Ivelina G.

    2017-01-01

    Astronomical software is used by each and every member of our scientific community. Purpose-build software is becoming ever more critical as we enter the regime of large datasets and simulations of increasing complexity. However, financial investments in building, maintaining and renovating the software infrastructure have been uneven. In this talk I will summarize past and current funding sources for astronomical software development, discuss other models of funding and introduce a new initiative for supporting community software at STScI. The purpose of this talk is to prompt discussion about how we allocate resources to this vital infrastructure.

  15. Fault avoidance in development of robot motion-control software by modeling the computation

    NARCIS (Netherlands)

    Brodskiy, Y.; Wilterdink, R.J.W.; Stramigioli, Stefano; Brugali, D.; Broenink, Johannes F.; Kroeger, T.; MacDonald, B.A.

    2014-01-01

    In this article, we present the process of modeling control algorithms as means to increase reliability of software components. The approach to developing Embedded Control Software (ECS) is tailored to Component-Based Software Development (CBSD). Such tailoring allows to re-use the ECS development

  16. Development of clinician-friendly software for musculoskeletal modeling and control.

    Science.gov (United States)

    Davoodi, R; Urata, C; Todorov, E; Loeb, G E

    2004-01-01

    Research and development in various fields dealing with human movement has been hampered by the lack of adequate software tools. We have formed a core development team to organize a collective effort by the research community to develop musculoskeletal modeling software that satisfies the requirements of both researchers and clinicians. We have identified initial requirements and have developed some of the basic components. We are developing common standards to facilitate sharing and reuse of musculoskeletal models and their component parts. Free distribution of the software and its source code will allow users to contribute to further development of the software as new models and data become available in the future.

  17. Built To Last: Using Iterative Development Models for Sustainable Scientific Software Development

    Science.gov (United States)

    Jasiak, M. E.; Truslove, I.; Savoie, M.

    2013-12-01

    In scientific research, software development exists fundamentally for the results they create. The core research must take focus. It seems natural to researchers, driven by grant deadlines, that every dollar invested in software development should be used to push the boundaries of problem solving. This system of values is frequently misaligned with those of the software being created in a sustainable fashion; short-term optimizations create longer-term sustainability issues. The National Snow and Ice Data Center (NSIDC) has taken bold cultural steps in using agile and lean development and management methodologies to help its researchers meet critical deadlines, while building in the necessary support structure for the code to live far beyond its original milestones. Agile and lean software development and methodologies including Scrum, Kanban, Continuous Delivery and Test-Driven Development have seen widespread adoption within NSIDC. This focus on development methods is combined with an emphasis on explaining to researchers why these methods produce more desirable results for everyone, as well as promoting developers interacting with researchers. This presentation will describe NSIDC's current scientific software development model, how this addresses the short-term versus sustainability dichotomy, the lessons learned and successes realized by transitioning to this agile and lean-influenced model, and the current challenges faced by the organization.

  18. ESPC Common Model Architecture Earth System Modeling Framework (ESMF) Software and Application Development

    Science.gov (United States)

    2015-09-30

    1 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. ESPC Common Model Architecture Earth System Modeling...LONG-TERM GOALS To expedite the development of numerical weather prediction (NWP) systems, the National Unified Operational Prediction...Capability (NUOPC) was established between NOAA and Navy to develop a common software architecture for easy and efficient interoperability. The

  19. Experiences in Teaching a Graduate Course on Model-Driven Software Development

    Science.gov (United States)

    Tekinerdogan, Bedir

    2011-01-01

    Model-driven software development (MDSD) aims to support the development and evolution of software intensive systems using the basic concepts of model, metamodel, and model transformation. In parallel with the ongoing academic research, MDSD is more and more applied in industrial practices. After being accepted both by a broad community of…

  20. Experiences in Teaching a Graduate Course on Model-Driven Software Development

    Science.gov (United States)

    Tekinerdogan, Bedir

    2011-01-01

    Model-driven software development (MDSD) aims to support the development and evolution of software intensive systems using the basic concepts of model, metamodel, and model transformation. In parallel with the ongoing academic research, MDSD is more and more applied in industrial practices. After being accepted both by a broad community of…

  1. Modeling Open Software Architectures of Robot Controllers: A Brief Survey of Modeling Methods and Developing Methods

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Openness is one of the features of modern robot controllers. Although many modeling technologies have been discussed to model and develop open robot controllers, the focus is always on modeling methodologies. Meanwhile, the relations between the former and the latter are usually ignored. According to the general software architecture of open robot controllers, this paper discusses modeling and developing methods. And the relationships between the typical ones are also analyzed.

  2. Towards Improving the Mental Model of Software Developers through Cartographic Visualization

    CERN Document Server

    Kuhn, Adrian; Nierstrasz, Oscar

    2010-01-01

    Software is intangible and knowledge about software systems is typically tacit. The mental model of software developers is thus an important factor in software engineering. It is our vision that developers should be able to refer to code as being "up in the north", "over in the west", or "down-under in the south". We want to provide developers, and everyone else involved in software development, with a *shared*, spatial and stable mental model of their software project. We aim to reinforce this by embedding a cartographic visualization in the IDE (Integrated Development Environment). The visualization is always visible in the bottom-left, similar to the GPS navigation device for car drivers. For each development task, related information is displayed on the map. In this paper we present CODEMAP, an eclipse plug-in, and report on preliminary results from an ongoing user study with professional developers and students.

  3. 76 FR 28819 - NUREG/CR-XXXX, Development of Quantitative Software Reliability Models for Digital Protection...

    Science.gov (United States)

    2011-05-18

    ... COMMISSION NUREG/CR-XXXX, Development of Quantitative Software Reliability Models for Digital Protection... issued for public comment a document entitled: NUREG/CR-XXXX, ``Development of Quantitative Software... development of regulatory guidance for using risk information related to digital systems in the...

  4. Benchmark Dose Software Development and Maintenance Ten Berge Cxt Models

    Science.gov (United States)

    This report is intended to provide an overview of beta version 1.0 of the implementation of a concentration-time (CxT) model originally programmed and provided by Wil ten Berge (referred to hereafter as the ten Berge model). The recoding and development described here represent ...

  5. Six Sigma software development

    CERN Document Server

    Tayntor, Christine B

    2002-01-01

    Since Six Sigma has had marked success in improving quality in other settings, and since the quality of software remains poor, it seems a natural evolution to apply the concepts and tools of Six Sigma to system development and the IT department. Until now however, there were no books available that applied these concepts to the system development process. Six Sigma Software Development fills this void and illustrates how Six Sigma concepts can be applied to all aspects of the evolving system development process. It includes the traditional waterfall model and in the support of legacy systems,

  6. Agile Software Development

    Science.gov (United States)

    Biju, Soly Mathew

    2008-01-01

    Many software development firms are now adopting the agile software development method. This method involves the customer at every level of software development, thus reducing the impact of change in the requirement at a later stage. In this article, the principles of the agile method for software development are explored and there is a focus on…

  7. Agile Software Development

    Science.gov (United States)

    Biju, Soly Mathew

    2008-01-01

    Many software development firms are now adopting the agile software development method. This method involves the customer at every level of software development, thus reducing the impact of change in the requirement at a later stage. In this article, the principles of the agile method for software development are explored and there is a focus on…

  8. A Mapping Model for Transforming Traditional Software Development Methods to Agile Methodology

    National Research Council Canada - National Science Library

    Rashmi Popli; Anita; Naresh Chauhan

    2013-01-01

    .... Agile model is growing in the market at very good pace.Companies are drifting from traditional Software Development Life Cycle models to Agile Environment forthe purpose of attaining quality and for the sake of saving cost and time...

  9. Agile software development

    CERN Document Server

    Stober, Thomas

    2009-01-01

    Software Development is moving towards a more agile and more flexible approach. It turns out that the traditional 'waterfall' model is not supportive in an environment where technical, financial and strategic constraints are changing almost every day. But what is agility? What are today's major approaches? And especially: What is the impact of agile development principles on the development teams, on project management and on software architects? How can large enterprises become more agile and improve their business processes, which have been existing since many, many years? What are the limit

  10. State of arbitrary complexity and Model Driven Architecture in the software development in Cuba

    Directory of Open Access Journals (Sweden)

    Nemury Silega

    2014-01-01

    Full Text Available Informatic systems play an important role in the society because are used in the majority of fields. The community of software researchers and developers devotes substantial efforts to determine how software systems can increasingly improve the environment in which they are deployed, for example, in medicine, business management, education, among other domains. But paradoxically these efforts do not correspond to those devoted to improving the environment of software development itself. There are insufficient proposals to streamline the software development process. The authors conducted an analysis of several proposals to improve the software development process in Cuba, propose how to address the problem based on the paradigm of Model Driven Architecture and make an assessment of the impact this may have on Cuban software industry.

  11. Software Engineering to Professionalize Software Development

    Directory of Open Access Journals (Sweden)

    Juan Miguel Alonso

    2011-12-01

    Full Text Available The role, increasingly important, that plays the software in the systems with widespread effects presents new challenges for the formation of Software Engineers. Not only because social dependence software is increasing, but also because the character of software development is also changing and with it the demands for software developers certified. In this paper are propose some challenges and aspirations that guide the learning processes Software Engineering and help to identify the need to train professionals in software development.

  12. Improving Software Developer's Competence

    DEFF Research Database (Denmark)

    Abrahamsson, Pekka; Kautz, Karlheinz; Sieppi, Heikki

    2002-01-01

    Emerging agile software development methods are people oriented development approaches to be used by the software industry. The personal software process (PSP) is an accepted method for improving the capabilities of a single software engineer. Five original hypotheses regarding the impact...

  13. Improving Software Developer's Competence

    DEFF Research Database (Denmark)

    Abrahamsson, Pekka; Kautz, Karlheinz; Sieppi, Heikki

    2002-01-01

    Emerging agile software development methods are people oriented development approaches to be used by the software industry. The personal software process (PSP) is an accepted method for improving the capabilities of a single software engineer. Five original hypotheses regarding the impact...

  14. Maximizing ROI on software development

    CERN Document Server

    Sikka, Vijay

    2004-01-01

    A brief review of software development history. Software complexity crisis. Software development ROI. The case for global software development and testing. Software quality and test ROI. How do you implement global software development and testing. Case studies.

  15. Whole earth modeling: developing and disseminating scientific software for computational geophysics.

    Science.gov (United States)

    Kellogg, L. H.

    2016-12-01

    Historically, a great deal of specialized scientific software for modeling and data analysis has been developed by individual researchers or small groups of scientists working on their own specific research problems. As the magnitude of available data and computer power has increased, so has the complexity of scientific problems addressed by computational methods, creating both a need to sustain existing scientific software, and expand its development to take advantage of new algorithms, new software approaches, and new computational hardware. To that end, communities like the Computational Infrastructure for Geodynamics (CIG) have been established to support the use of best practices in scientific computing for solid earth geophysics research and teaching. Working as a scientific community enables computational geophysicists to take advantage of technological developments, improve the accuracy and performance of software, build on prior software development, and collaborate more readily. The CIG community, and others, have adopted an open-source development model, in which code is developed and disseminated by the community in an open fashion, using version control and software repositories like Git. One emerging issue is how to adequately identify and credit the intellectual contributions involved in creating open source scientific software. The traditional method of disseminating scientific ideas, peer reviewed publication, was not designed for review or crediting scientific software, although emerging publication strategies such software journals are attempting to address the need. We are piloting an integrated approach in which authors are identified and credited as scientific software is developed and run. Successful software citation requires integration with the scholarly publication and indexing mechanisms as well, to assign credit, ensure discoverability, and provide provenance for software.

  16. A Petri Net-Based Software Process Model for Developing Process-Oriented Information Systems

    Science.gov (United States)

    Li, Yu; Oberweis, Andreas

    Aiming at increasing flexibility, efficiency, effectiveness, and transparency of information processing and resource deployment in organizations to ensure customer satisfaction and high quality of products and services, process-oriented information systems (POIS) represent a promising realization form of computerized business information systems. Due to the complexity of POIS, explicit and specialized software process models are required to guide POIS development. In this chapter we characterize POIS with an architecture framework and present a Petri net-based software process model tailored for POIS development with consideration of organizational roles. As integrated parts of the software process model, we also introduce XML nets, a variant of high-level Petri nets as basic methodology for business processes modeling, and an XML net-based software toolset providing comprehensive functionalities for POIS development.

  17. Comparison of the Two-Hemisphere Model-Driven Approach to Other Methods for Model-Driven Software Development

    Directory of Open Access Journals (Sweden)

    Nikiforova Oksana

    2015-12-01

    Full Text Available Models are widely used not only in computer science field, but also in other fields. They are an effective way to show relevant information in a convenient way. Model-driven software development uses models and transformations as first-class citizens. That makes software development phases more related to each other, those links later help to make changes or modify software product more freely. At the moment there are a lot of methods and techniques to create those models and transform them into each other. Since 2004, authors have been developing the so called 2HMD approach to bridge the gap between problem domain and software components by using models and model transformation. The goal of this research is to compare different methods positioned for performing the same tasks as the 2HMD approach and to understand the state of the art in the area of model-driven software development.

  18. Model-based Software Engineering

    DEFF Research Database (Denmark)

    2010-01-01

    The vision of model-based software engineering is to make models the main focus of software development and to automatically generate software from these models. Part of that idea works already today. But, there are still difficulties when it comes to behaviour. Actually, there is no lack in models...

  19. Model-based Software Engineering

    DEFF Research Database (Denmark)

    2010-01-01

    The vision of model-based software engineering is to make models the main focus of software development and to automatically generate software from these models. Part of that idea works already today. But, there are still difficulties when it comes to behaviour. Actually, there is no lack in models...

  20. Organization of pattern information in the pattern based software development: A POMSDP model

    Institute of Scientific and Technical Information of China (English)

    TANG Yong; LIU Ri-guang; WANG Yan

    2008-01-01

    Focused on the lack of proper organization for patterns in the development of pattern based software, a POMSDP model with layered tree structure for organizing patterns during the process of development was put forward. The model and its interrelated concepts were strictly defined and introduced by applying the theory of set, symbolic logic and pattern, which ensures the correctness, maturity and expansibility of the model. The expansibility of the model was discussed mainly. The basic realization and the application in the automatic que-ry system were presented. Based on the existing software development methods, the POMSDP model resolves the problem of chaos in the application of patterns, strengthens the controllability of the system, and facilitates the improvement, maintenance, expansion, and especially the reengineering of the software system.

  1. Gammasphere software development. Progress report

    Energy Technology Data Exchange (ETDEWEB)

    Piercey, R.B.

    1993-05-01

    Activities of the nuclear physics group are described. Progress was made in organizing the Gammasphere Software Working Group, establishing a nuclear computing facility, participating in software development at Lawrence Berkeley, developing a common data file format, and adapting the ORNL UPAK software to run at Gammasphere. A universal histogram object was developed that defines a file format and provides for an objective-oriented programming model. An automated liquid nitrogen fill system was developed for Gammasphere (110 Ge detectors comprise the sphere).

  2. Gammasphere software development. Progress report

    Energy Technology Data Exchange (ETDEWEB)

    Piercey, R.B.

    1993-05-01

    Activities of the nuclear physics group are described. Progress was made in organizing the Gammasphere Software Working Group, establishing a nuclear computing facility, participating in software development at Lawrence Berkeley, developing a common data file format, and adapting the ORNL UPAK software to run at Gammasphere. A universal histogram object was developed that defines a file format and provides for an objective-oriented programming model. An automated liquid nitrogen fill system was developed for Gammasphere (110 Ge detectors comprise the sphere).

  3. Software engineering architecture-driven software development

    CERN Document Server

    Schmidt, Richard F

    2013-01-01

    Software Engineering: Architecture-driven Software Development is the first comprehensive guide to the underlying skills embodied in the IEEE's Software Engineering Body of Knowledge (SWEBOK) standard. Standards expert Richard Schmidt explains the traditional software engineering practices recognized for developing projects for government or corporate systems. Software engineering education often lacks standardization, with many institutions focusing on implementation rather than design as it impacts product architecture. Many graduates join the workforce with incomplete skil

  4. Lean software development

    OpenAIRE

    Hefnerová, Lucie

    2011-01-01

    The main goal of this bachelor thesis is the emergence of the clear Czech written material concerning the concept of Lean Software Development, which has been gaining significant attention in the field of software development, recently. Another goal of this thesis is to summarize the possible approaches of categorizing the concept and to summarize the possible approaches of defining the relationship between Lean and Agile software development. The detailed categorization of the tools potentia...

  5. AutoMoDe - Model-Based Development of Automotive Software

    CERN Document Server

    Ziegenbein, Dirk; Freund, Ulrich; Bauer, Andreas; Romberg, Jan; Schatz, Bernhard

    2011-01-01

    This paper describes first results from the AutoMoDe (Automotive Model-Based Development) project. The overall goal of the project is to develop an integrated methodology for model-based development of automotive control software, based on problem-specific design notations with an explicit formal foundation. Based on the existing AutoFOCUS framework, a tool prototype is being developed in order to illustrate and validate the key elements of our approach.

  6. Agile software development

    CERN Document Server

    Dingsoyr, Torgeir; Moe, Nils Brede

    2010-01-01

    Agile software development has become an umbrella term for a number of changes in how software developers plan and coordinate their work, how they communicate with customers and external stakeholders, and how software development is organized in small, medium, and large companies, from the telecom and healthcare sectors to games and interactive media. Still, after a decade of research, agile software development is the source of continued debate due to its multifaceted nature and insufficient synthesis of research results. Dingsoyr, Dyba, and Moe now present a comprehensive snapshot of the kno

  7. Adaptive Software Development supported by an Automated Process: a Reference Model

    Directory of Open Access Journals (Sweden)

    AFFONSO, F. J.

    2013-12-01

    Full Text Available This paper presents a reference model as an automated process to assist the adaptive software development at runtime, also known as Self-adaptive Systems (SaS at runtime. This type of software has specific characteristics in comparison to traditional one, since it allows that changes (structural or behavioral to be incorporated at runtime. Automated processes have been used as a feasible solution to conduct software adaptation at runtime by minimizing human involvement (developers and speeding up the execution of tasks. In parallel, reference models have been used to aggregate knowledge and architectural artifacts, since they capture the systems essence in specific domains. However, presently no there is reference model based on reflection for the automation of software adaptation at runtime. In this scenario, this paper presents a reference model based on reflection, as an automated process, for the development of software systems that require adaptation at runtime. To show the applicability of the model, a case study was conducted and a good perspective to efficiently contribute to the area of SaS has been obtained.

  8. Development of a plug-in for Variability Modeling in Software Product Lines

    Directory of Open Access Journals (Sweden)

    María Lucía López-Araujo

    2012-03-01

    Full Text Available Las Líneas de Productos de Software (LPS toman ventaja económica de las similitudes y variación entre un conjunto de sistemas de software dentro de un dominio específico. La Ingeniería de Líneas de Productos de Software por lo tanto, define una serie de procesos para el desarrollo de LPS que consideran las similitudes y variación a lo largo del ciclo devida. El modelado de variabilidad, en consecuencia, es una actividad esencial en un enfoque de Ingeniería de Líneas de Productos de Software. Existen varias técnicas para modelado de variabilidad. Entre ellas resalta COVAMOF que permite modelar los puntos de variación, variantes y dependencias como entidades de primera clase, proporcionando una manera uniforme de representarlos en los diversos niveles de abstracción de una LPS. Para poder aprovechar los beneficios de COVAMOF es necesario contar con una herramienta, de otra manera el modelado y la administración de la variabilidad pueden resultar una labor ardua para el ingeniero de software. Este trabajo presenta el desarrollo de un plug-in de COVAMOF para Eclipse.Software Product Lines (SPL take economic advantage of commonality and variability among a set of software systems that exist within a specific domain. Therefore, Software Product Line Engineering defines a series of processes for the development of a SPL that consider commonality and variability during the software life cycle. Variability modeling is therefore an essential activity in a Software Product Line Engineering approach. There are several techniques for variability modeling nowadays. COVAMOF stands out among them since it allows the modeling of variation points, variants and dependencies as first class elements. COVAMOF, therefore, provides an uniform manner for representing such concepts in different levels of abstraction within a SPL. In order to take advantage of COVAMOF benefits, it is necessary to have a computer aided tool, otherwise variability modeling and

  9. Developing Software Simulations

    Directory of Open Access Journals (Sweden)

    Tom Hall

    2007-06-01

    Full Text Available Programs in education and business often require learners to develop and demonstrate competence in specified areas and then be able to effectively apply this knowledge. One method to aid in developing a skill set in these areas is through the use of software simulations. These simulations can be used for learner demonstrations of competencies in a specified course as well as a review of the basic skills at the beginning of subsequent courses. The first section of this paper discusses ToolBook, the software used to develop our software simulations. The second section discusses the process of developing software simulations. The third part discusses how we have used software simulations to assess student knowledge of research design by providing simulations that allow the student to practice using SPSS and Excel.

  10. Developing Software Simulations

    Directory of Open Access Journals (Sweden)

    Tom Hall

    2007-06-01

    Full Text Available Programs in education and business often require learners to develop and demonstrate competence in specified areas and then be able to effectively apply this knowledge. One method to aid in developing a skill set in these areas is through the use of software simulations. These simulations can be used for learner demonstrations of competencies in a specified course as well as a review of the basic skills at the beginning of subsequent courses. The first section of this paper discusses ToolBook, the software used to develop our software simulations. The second section discusses the process of developing software simulations. The third part discusses how we have used software simulations to assess student knowledge of research design by providing simulations that allow the student to practice using SPSS and Excel.

  11. Collaborative software development

    NARCIS (Netherlands)

    Jonge, M. de; Visser, E.; Visser, J.M.W.

    2001-01-01

    We present an approach to collaborative software development where obtaining components and contributing components across organizational boundaries are explicit phases in the development process. A lightweight generative infrastructure supports this approach with an online package base, and several

  12. Systematic Software Development

    DEFF Research Database (Denmark)

    Kuhrmann, Marco; Méndez Fernández, Daniel

    2015-01-01

    The speed of innovation and the global allocation of resources to accelerate development or to reduce cost put pressure on the software industry. In the global competition, especially so-called high-price countries have to present arguments why the higher development cost is justified and what...... makes these countries an attractive host for software companies. Often, high-quality engineering and excellent quality of products, e.g., machinery and equipment, are mentioned. Yet, the question is: Can such arguments be also found for the software industry? We aim at investigating the degree...... of professionalism and systematization of software development to draw a map of strengths and weaknesses. To this end, we conducted as a first step an exploratory survey in Germany, presented in this paper. In this survey, we focused on the perceived importance of the two general software engineering process areas...

  13. Software safety analysis on the model specified by NuSCR and SMV input language at requirements phase of software development life cycle using SMV

    Energy Technology Data Exchange (ETDEWEB)

    Koh, Kwang Yong; Seong, Poong Hyun [Korea Advanced Institute of Science and Technology, Taejon (Korea, Republic of)

    2005-07-01

    Safety-critical software process is composed of development process, verification and validation (V and V) process and safety analysis process. Safety analysis process has been often treated as an additional process and not found in a conventional software process. But software safety analysis (SSA) is required if software is applied to a safety system, and the SSA shall be performed independently for the safety software through software development life cycle (SDLC). Of all the phases in software development, requirements engineering is generally considered to play the most critical role in determining the overall software quality. NASA data demonstrate that nearly 75% of failures found in operational software were caused by errors in the requirements. The verification process in requirements phase checks the correctness of software requirements specification, and the safety analysis process analyzes the safety-related properties in detail. In this paper, the method for safety analysis at requirements phase of software development life cycle using symbolic model verifier (SMV) is proposed. Hazard is discovered by hazard analysis and in other to use SMV for the safety analysis, the safety-related properties are expressed by computation tree logic (CTL)

  14. Meta-Model for global software development to support portability and interoperability

    NARCIS (Netherlands)

    Yildiz, Bugra Mehmet; Tekinerdogan, B.

    2011-01-01

    Global Software Development (GSD) considers the coordinated activity of software development that is not localized and central but geographically distributed. To support coordination among sites, usually it is aimed to adopt the same development and execution platform. Unfortunately, adopting a

  15. Speakeasy software development

    Science.gov (United States)

    Baskinger, Patricia J.; Ozarow, Larry; Chruscicki, Mary C.

    1993-08-01

    The Speakeasy Software Development Project had three primary objectives. The first objective was to perform Independent Verification and Validation (IV & V) of the software and documentation associated with the signal processor being developed by Hazeltine and TRW under the Speakeasy program. The IV & V task also included an analysis and assessment of the ability of the signal processor software to provide LPI communications functions. The second objective was to assist in the enhancement and modification of an existing Rome Lab signal processor workstation. Finally, TASC developed project management support tools and provided program management support to the Speakeasy Program Office.

  16. Space Flight Software Development Software for Intelligent System Health Management

    Science.gov (United States)

    Trevino, Luis C.; Crumbley, Tim

    2004-01-01

    The slide presentation examines the Marshall Space Flight Center Flight Software Branch, including software development projects, mission critical space flight software development, software technical insight, advanced software development technologies, and continuous improvement in the software development processes and methods.

  17. Model-Based GN and C Simulation and Flight Software Development for Orion Missions beyond LEO

    Science.gov (United States)

    Odegard, Ryan; Milenkovic, Zoran; Henry, Joel; Buttacoli, Michael

    2014-01-01

    For Orion missions beyond low Earth orbit (LEO), the Guidance, Navigation, and Control (GN&C) system is being developed using a model-based approach for simulation and flight software. Lessons learned from the development of GN&C algorithms and flight software for the Orion Exploration Flight Test One (EFT-1) vehicle have been applied to the development of further capabilities for Orion GN&C beyond EFT-1. Continuing the use of a Model-Based Development (MBD) approach with the Matlab®/Simulink® tool suite, the process for GN&C development and analysis has been largely improved. Furthermore, a model-based simulation environment in Simulink, rather than an external C-based simulation, greatly eases the process for development of flight algorithms. The benefits seen by employing lessons learned from EFT-1 are described, as well as the approach for implementing additional MBD techniques. Also detailed are the key enablers for improvements to the MBD process, including enhanced configuration management techniques for model-based software systems, automated code and artifact generation, and automated testing and integration.

  18. Global software development

    DEFF Research Database (Denmark)

    Matthiesen, Stina

    2016-01-01

    This overview presents the mid stages of my doctoral research-based on ethnographic work conducted in IT companies in India and in Denmark-on collaborative work within global software development (GSD). In the following I briefly introduce how this research seeks to spark a debate in CSCW...... by challenging contemporary ideals about software development outsourcing through the exploration of the multiplicities and asymmetric dynamics inherent in the collaborative work of GSD....

  19. MODEL-BASED DEVELOPMENT OF REAL-TIME SOFTWARE SYSTEM FOR ELECTRONIC UNIT PUMP SYSTEM

    Institute of Scientific and Technical Information of China (English)

    YU Shitao; YANG Shiwei; YANG Lin; GONG Yuanming; ZHUO Bin

    2007-01-01

    A real-time operating system (RTOS), also named OS, is designed based on the hardware platform of MC68376, and is implemented in the electronic control system for unit pump in diesel engine. A parallel and time-based task division method is introduced and the multi-task software architecture is built in the software system for electronic unit pump (EUP) system. The V-model software development process is used to control algorithm of each task. The simulation results of the hardware-in-the-loop simulation system (HILSS) and the engine experimental results show that the OS is an efficient real-time kernel, and can meet the real-time demands of EUP system; The built multi-task software system is real-time, determinate and reliable. V-model development is a good development process of control algorithms for EUP system, the control precision of control system can be ensured, and the development cycle and cost are also decreased.

  20. A Novel Software Evolution Model Based on Software Networks

    Science.gov (United States)

    Pan, Weifeng; Li, Bing; Ma, Yutao; Liu, Jing

    Many published papers analyzed the forming mechanisms and evolution laws of OO software systems from software reuse, software pattern, etc. There, however, have been fewer models so far merely built on the software components such as methods, classes, etc. and their interactions. In this paper, a novel Software Evolution Model based on Software Networks (called SEM-SN) is proposed. It uses software network at class level to represent software systems, and uses software network’s dynamical generating process to simulate activities in real software development process such as new classes’ dynamical creations and their dynamical interactions with already existing classes. It also introduces the concept of node/edge ageing to describe the decaying of classes with time. Empirical results on eight open-source Object-Oriented (OO) software systems demonstrate that SCM-SN roughly describes the evolution process of software systems and the emergence of their complex network characteristics.

  1. VRS Model: A Model for Estimation of Efforts and Time Duration in Development of IVR Software System

    Directory of Open Access Journals (Sweden)

    Devesh Kumar Srivastava

    2012-01-01

    Full Text Available Accurate software effort estimates are critical to measure for developers, leaders, project managers. Underestimating the costs may result in management approving proposed systems which can exceed their budgets, with underdeveloped functions and poor quality, and failure to complete on time. Various models have been derived to calculate the effort of large number of completed software projects from various organizations and applications to explore how project sizes mapped into project effort. But, still there is a need to prediction accuracy of the models. Day to day there is rapid change and growth to get new techniques and model to estimate the accurate size, effort and cost of software but still there is lack of accuracy to meet exactly the accurate effort as per company norms and standards. A BPO Company takes up a process of another company. The Company which is handling the incoming calls of customers, queries, solution, services through software is known as IVR software. In this paper the author has proposed a model named ?VRS Model? to estimate the accurate effort and schedule of IVR software applications. This model will be helpful for project managers, developers and customers to estimate accurate effort and schedule of only IVR Projects.

  2. Generic domain models in software engineering

    Science.gov (United States)

    Maiden, Neil

    1992-01-01

    This paper outlines three research directions related to domain-specific software development: (1) reuse of generic models for domain-specific software development; (2) empirical evidence to determine these generic models, namely elicitation of mental knowledge schema possessed by expert software developers; and (3) exploitation of generic domain models to assist modelling of specific applications. It focuses on knowledge acquisition for domain-specific software development, with emphasis on tool support for the most important phases of software development.

  3. JPI UML Software Modeling

    Directory of Open Access Journals (Sweden)

    Cristian Vidal Silva

    2015-12-01

    Full Text Available Aspect-Oriented Programming AOP extends object-oriented programming OOP with aspects to modularize crosscutting behavior on classes by means of aspects to advise base code in the occurrence of join points according to pointcut rules definition. However, join points introduce dependencies between aspects and base code, a great issue to achieve an effective independent development of software modules. Join Point Interfaces JPI represent join points using interfaces between classes and aspect, thus these modules do not depend of each other. Nevertheless, since like AOP, JPI is a programming methodology; thus, for a complete aspect-oriented software development process, it is necessary to define JPI requirements and JPI modeling phases. Towards previous goal, this article proposes JPI UML class and sequence diagrams for modeling JPI software solutions. A purpose of these diagrams is to facilitate understanding the structure and behavior of JPI programs. As an application example, this article applies the JPI UML diagrams proposal on a case study and analyzes the associated JPI code to prove their hegemony.

  4. Parallel Software Model Checking

    Science.gov (United States)

    2015-01-08

    JAN 2015 2. REPORT TYPE N/A 3. DATES COVERED 4. TITLE AND SUBTITLE Parallel Software Model Checking 5a. CONTRACT NUMBER 5b. GRANT NUMBER...AND ADDRESS(ES) Software Engineering Institute Carnegie Mellon University Pittsburgh, PA 15213 8. PERFORMING ORGANIZATION REPORT NUMBER 9...3: ∧ ≥ 10 ∧ ≠ 10 ⇒ : Parallel Software Model Checking Team Members Sagar Chaki, Arie Gurfinkel

  5. TRW’s Ada Process Model for Incremental Development of Large Software Systems

    Science.gov (United States)

    1990-01-01

    TRW’s Ada Process Model has proven to be key to the Command Center Processing and Display System-Replacement (CCPDS-R) project’s success to data in...developing over 3000,000 lines of Ada source code executing in a distributed VAX VMS environment. The Ada Process Model is, in simplest terms, a...software progress metrics. This paper provides an overview of the techniques and benefits of the Ada Process Model and describes some of the experience and

  6. Entretian Model for Software Maintenance

    Directory of Open Access Journals (Sweden)

    Priya K Betala

    2013-10-01

    Full Text Available Maintenance refers to the act of modifying the software after putting in use in order to maintain its usability.[1]. In other words, Software maintenance can be defined as; it is the process of providing services to the customers after the delivery of the software. Despite the fact that maintaining software is very challenging, it is the most important routine that must be carried out in the development cycle. If the software is not maintained efficiently it may lead to the death of the software. Maintenance of software may be carried out in two ways. The first one is called „In-house maintenance‟ and the second one is called „Transition maintenance‟. The latter faces the drastic challenges when compared to former, as one team may not provide complete source code to the other, leading to unstructured code, lack of appropriate technique and knowledge about the functioning of the current software. There are a few aspects of software maintenance that set it apart from the other phases. Software maintenance cost comprises more than half of the total software development cost. Also, without software maintenance, it is impossible to change the problems within the product after its release, and many disasters can happen because of immature software. Recognising the importance of software maintenance, this paper proposes a model called “ENTRETIAN MODEL” (Entretian, a French word meaning Maintenance which consists of six basic steps to follow while maintaining software system. This model overcomes certain misconceptions about maintenance phase and it is highly beneficial to the Maintenance Support Team (MST to handle their maintenance activities systematically and efficiently. By employing the proposed model, the MST is able to overcome the technical and managerial issues that are faced earlier in the maintenance phase. The advantage of using “Entretian Model” is best illustrated in this paper with the help of the ERP package.

  7. Payload software technology: Software technology development plan

    Science.gov (United States)

    1977-01-01

    Programmatic requirements for the advancement of software technology are identified for meeting the space flight requirements in the 1980 to 1990 time period. The development items are described, and software technology item derivation worksheets are presented along with the cost/time/priority assessments.

  8. Astronomers as Software Developers

    Science.gov (United States)

    Pildis, Rachel A.

    2016-01-01

    Astronomers know that their research requires writing, adapting, and documenting computer software. Furthermore, they often have to learn new computer languages and figure out how existing programs work without much documentation or guidance and with extreme time pressure. These are all skills that can lead to a software development job, but recruiters and employers probably won't know that. I will discuss all the highly useful experience that astronomers may not know that they already have, and how to explain that knowledge to others when looking for non-academic software positions. I will also talk about some of the pitfalls I have run into while interviewing for jobs and working as a developer, and encourage you to embrace the curiosity employers might have about your non-standard background.

  9. Software Assurance Competency Model

    Science.gov (United States)

    2013-03-01

    2010a]: Application of technologies and processes to achieve a required level of confidence that software systems and services function in the...for specific projects. L5: Analyze assurance technologies and contribute to the development of new ones. Assured Software Development L1

  10. Software development of modeling assistant for continuous suspension bridges with multi-pylon

    Institute of Scientific and Technical Information of China (English)

    Zhong Jianchi; Chen Ke; Chen Yunhai; Lu jianming

    2012-01-01

    Building a reasonable and accurate finite element model is the first and critical step for structural analysis of complicated bridge. In this article, modeling assistant for continuous suspension with multi-pylon is developed based on ~ Net platform, with VB. Net, C# language and OpenGL graphic technique. With parameterized modeling method, finite element model of this kind of bridge can be built quickly and accurately, and multi-type element modeling with uniform parameters is realized. With advanced graphic technique, three-dimensional model graph can be real-timely previewed for intuitive data check. With an example of practice project, the accuracy and feasibility of this modeling method and practicality of this software are verified.

  11. Towards Quality of Service and Resource Aware Robotic Systems through Model-Driven Software Development

    CERN Document Server

    Steck, Andreas

    2010-01-01

    Engineering the software development process in robotics is one of the basic necessities towards industrial-strength service robotic systems. A major challenge is to make the step from code-driven to model-driven systems. This is essential to replace hand-crafted single-unit systems by systems composed out of components with explicitly stated properties. Furthermore, this fosters reuse by separating robotics knowledge from short-cycled implementational technologies. Altogether, this is one but important step towards "able" robots. This paper reports on a model-driven development process for robotic systems. The process consists of a robotics metamodel with first explications of non-functional properties. A model-driven toolchain based on Eclipse provides the model transformation and code generation steps. It also provides design time analysis of resource parameters (e.g. schedulability analysis of realtime tasks) as a first step towards overall resource awareness in the development of integrated robotic syste...

  12. Global Software Development

    DEFF Research Database (Denmark)

    Søderberg, Anne-Marie; Krishna, S.; Bjørn, Pernille

    2013-01-01

    accounts of close collaboration processes in two large and complex projects, where off-shoring of software development is moved to a strategic level, we found that the vendor was able to establish a strategic partnership through long-term engagement with the field of banking and insurance as well...

  13. Agile distributed software development

    DEFF Research Database (Denmark)

    Persson, John Stouby; Mathiassen, Lars; Aaen, Ivan

    2012-01-01

    While face-to-face interaction is fundamental in agile software development, distributed environments must rely extensively on mediated interactions. Practicing agile principles in distributed environments therefore poses particular control challenges related to balancing fixed vs. evolving quality...... requirements and people vs. process-based collaboration. To investigate these challenges, we conducted an in-depth case study of a successful agile distributed software project with participants from a Russian firm and a Danish firm. Applying Kirsch’s elements of control framework, we offer an analysis of how...

  14. A Collaboration Model for Community-Based Software Development with Social Machines

    Directory of Open Access Journals (Sweden)

    Dave Murray-Rust

    2016-02-01

    Full Text Available Crowdsourcing is generally used for tasks with minimal coordination, providing limited support for dynamic reconfiguration. Modern systems, exemplified by social ma chines, are subject to continual flux in both the client and development communities and their needs. To support crowdsourcing of open-ended development, systems must dynamically integrate human creativity with machine support. While workflows can be u sed to handle structured, predictable processes, they are less suitable for social machine development and its attendant uncertainty. We present models and techniques for coordination of human workers in crowdsourced software development environments. We combine the Social Compute Unit—a model of ad-hoc human worker teams—with versatile coordination protocols expressed in the Lightweight Social Calculus. This allows us to combine coordination and quality constraints with dynamic assessments of end-user desires, dynamically discovering and applying development protocols.

  15. Meta-Model for global software development to support portability and interoperability

    NARCIS (Netherlands)

    Yildiz, Bugra Mehmet; Tekinerdogan, Bedir

    2011-01-01

    Global Software Development (GSD) considers the coordinated activity of software development that is not localized and central but geographically distributed. To support coordination among sites, usually it is aimed to adopt the same development and execution platform. Unfortunately, adopting a sing

  16. 3-d finite element model development for biomechanics: a software demonstration

    Energy Technology Data Exchange (ETDEWEB)

    Hollerbach, K.; Hollister, A.M.; Ashby, E.

    1997-03-01

    Finite element analysis is becoming an increasingly important part of biomechanics and orthopedic research, as computational resources become more powerful, and data handling algorithms become more sophisticated. Until recently, tools with sufficient power did not exist or were not accessible to adequately model complicated, three-dimensional, nonlinear biomechanical systems. In the past, finite element analyses in biomechanics have often been limited to two-dimensional approaches, linear analyses, or simulations of single tissue types. Today, we have the resources to model fully three-dimensional, nonlinear, multi-tissue, and even multi-joint systems. The authors will present the process of developing these kinds of finite element models, using human hand and knee examples, and will demonstrate their software tools.

  17. A Mapping Model for Transforming Traditional Software Development Methods to Agile Methodology

    Directory of Open Access Journals (Sweden)

    Rashmi Popli

    2013-07-01

    Full Text Available Agility is bringing in responsibility and ownership in individuals, which will eventually bring outeffectiveness and efficiency in deliverables. Agile model is growing in the market at very good pace.Companies are drifting from traditional Software Development Life Cycle models to Agile Environment forthe purpose of attaining quality and for the sake of saving cost and time. Nimbleness nature of Agile ishelpful in frequent releases so as to satisfy the customer by providing frequent dual feedback. InTraditional models, life cycle is properly defined and also phases are elaborated by specifying needed inputand output parameters. On the other hand, in Agile environment, phases are specific to methodologies ofAgile - Extreme Programming etc. In this paper a common life cycle approach is proposed that isapplicable for different kinds of teams. The paper aims to describe a mapping function for mapping oftraditional methods to Agile method.

  18. Project maturity evaluation model for SMEs from the software development sub-sector

    Directory of Open Access Journals (Sweden)

    ÁLVARO JULIO CUADROS LÓPEZ

    Full Text Available The purpose of the paper is to present a project management maturity model for SMEs oriented to software development. The proposal is based on CMMI capability maturity model, and the SCAMPI evaluation method. The proposal includes a quantitative satisfaction scale, redundant evidence assessment, and multiple criteria for selecting experts. The proposal was validated with a case study carried out in a medium-sized company from the Information and Communications Technology sector. The model concluded that the company did not reach maturity level 2; however it showed that 92% of the processes from maturity level 2 and 77% of the total process had already been implemented, which allows the company to adopt a specific orientation for its improvement efforts.

  19. Software Process Modeling with UML in Development of Medical Insurance MIS

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This paper describes how to use the Unified Modeling Language(UML) to modeling software processes in medical insurance MIS, and compares UML Modeling method with classic PO(Process-Oriented) Modeling method. It indicates that th e whole performance of application system model described by UML is much better t han the one described by PO.

  20. Modular Infrastructure for Rapid Flight Software Development

    Science.gov (United States)

    Pires, Craig

    2010-01-01

    This slide presentation reviews the use of modular infrastructure to assist in the development of flight software. A feature of this program is the use of model based approach for application unique software. A review of two programs that this approach was use on are: the development of software for Hover Test Vehicle (HTV), and Lunar Atmosphere and Dust Environment Experiment (LADEE).

  1. Software Metrics for Identifying Software Size in Software Development Projects

    Directory of Open Access Journals (Sweden)

    V.S.P Vidanapathirana

    2015-11-01

    Full Text Available Measurements are fundamental any engineering discipline. They indicate the amount, extent, dimension or capacity of an attribute or a product, in a quantitative manner. The analyzed results of the measured data can be given as the basic idea of metrics. It is a quantitative representation of the measurements of the degree to which a system, component, or process possesses a given attribute. When it comes to software, the metrics are a wide scope of measurements of computer programming. The size oriented metrics takes a main role in it since they can be used as the key for better estimations, to improve trust and confidence, and to have a better control over the software products. Software professionals traditionally have been measuring the size of software applications by using several methods. In this paper the researchers discuss about the software size metrics for identifying software size and it is mainly focused on the software development projects in today’s Information Technology (IT industry.

  2. Online Rule Generation Software Process Model

    National Research Council Canada - National Science Library

    Sudeep Marwaha; Alka Aroa; Satma M C; Rajni Jain; R C Goyal

    2013-01-01

    .... The software process model for rule generation using decision tree classifier refers to the various steps required to be executed for the development of a web based software model for decision rule generation...

  3. Design and Use of CSP Meta-Model for Embedded Control Software Development

    NARCIS (Netherlands)

    Bezemer, Maarten M.; Wilterdink, Robert J.W.; Broenink, Jan F.; Welch, Peter H.; Barnes, Frederick R.M.; Chalmers, Kevin; Baekgaard Pedersen, Jan; Sampson, Adam T.

    2012-01-01

    Software that is used to control machines and robots must be predictable and reliable. Model-Driven Design (MDD) techniques are used to comply with both the technical and business needs. This paper introduces a CSP meta-model that is suitable for these MDD techniques. The meta-model describes the st

  4. Development of the CCP-200 mathematical model for Syzran CHPP using the Thermolib software package

    Science.gov (United States)

    Usov, S. V.; Kudinov, A. A.

    2016-04-01

    Simplified cycle diagram of the CCP-200 power generating unit of Syzran CHPP containing two gas turbines PG6111FA with generators, two steam recovery boilers KUP-110/15-8.0/0.7-540/200, and one steam turbine Siemens SST-600 (one-cylinder with two variable heat extraction units of 60/75 MW in heatextraction and condensing modes, accordingly) with S-GEN5-100 generators was presented. Results of experimental guarantee tests of the CCP-200 steam-gas unit are given. Brief description of the Thermolib application for the MatLab Simulink software package is given. Basic equations used in Thermolib for modeling thermo-technical processes are given. Mathematical models of gas-turbine plant, heat-recovery steam generator, steam turbine and integrated plant for power generating unit CCP-200 of Syzran CHPP were developed with the help of MatLab Simulink and Thermolib. The simulation technique at different ambient temperature values was used in order to get characteristics of the developed mathematical model. Graphic comparison of some characteristics of the CCP-200 simulation model (gas temperature behind gas turbine, gas turbine and combined cycle plant capacity, high and low pressure steam consumption and feed water consumption for high and low pressure economizers) with actual characteristics of the steam-gas unit received at experimental (field) guarantee tests at different ambient temperature are shown. It is shown that the chosen degrees of complexity, characteristics of the CCP-200 simulation model, developed by Thermolib, adequately correspond to the actual characteristics of the steam-gas unit received at experimental (field) guarantee tests; this allows considering the developed mathematical model as adequate and acceptable it for further work.

  5. Software developments for gammasphere

    Energy Technology Data Exchange (ETDEWEB)

    Lauritsen, T.; Ahmad, I.; Carpenter, M.P. [and others

    1995-08-01

    This year marked the year when data acquisition development for Gammasphere evolved from planning to accomplishment, both in hardware and software. Two VME crates now contain about 10 crate-processors which are used to handle the data from VXI processors - which in turn collect the data from germanium and BGO detectors in the array. The signals from the detectors are processed and digitized in custom-built electronics boards. The processing power in the VME crates is used to digitally filter the data before they are written to tape. The goal is to have highly processed data flowing to tape, eliminating the off-line filtering and manipulation of data that was standard procedure in earlier experiments.

  6. A parallel-pipelining software process model

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Software process is a framework for effective and timely delivery of software system. The framework plays a crucial role for software success. However, the development of large-scale software still faces the crisis of high risks, low quality, high costs and long cycle time.This paper proposed a three-phase parallel-pipelining software process model for improving speed and productivity, and reducing software costs and risks without sacrificing software quality. In this model, two strategies were presented. One strategy, based on subsystem-cost priority, Was used to prevent software development cost wasting and to reduce software complexity as well; the other strategy, used for balancing subsystem complexity, was designed to reduce the software complexity in the later development stages. Moreover. The proposed function-detailed and workload-simplified subsystem pipelining software process model presents much higher parallelity than the concurrent incremental model. Finally, the component-based product line technology not only ensures software quality and further reduces cycle time, software costs. And software risks but also sufficiently and rationally utilizes previous software product resources and enhances the competition ability of software development organizations.

  7. MEASURING PRODUCTIVITY OF SOFTWARE DEVELOPMENT TEAMS

    Directory of Open Access Journals (Sweden)

    Goparaju Purna Sudhakar

    2012-02-01

    Full Text Available This paper gives an exhaustive literature review of the techniques and models available tomeasure the productivity of software development teams. Definition of productivity, measuringindividual programmer’s productivity, and measuring software development team productivity arediscussed. Based on the literature review it was found that software productivity measurement canbe done using SLOC (Source Lines of Code, function points, use case points, object points, andfeature points. Secondary research findings indicate that the team size, response time, taskcomplexity, team climate and team cohesion have an impact on software development teamproductivity. List of factors affecting the software development team productivity are studied andreviewed.

  8. Gammasphere software development. Progress report

    Energy Technology Data Exchange (ETDEWEB)

    Piercey, R.B.

    1994-01-01

    This report describes the activities of the nuclear physics group at Mississippi State University which were performed during 1993. Significant progress has been made in the focus areas: chairing the Gammasphere Software Working Group (SWG); assisting with the porting and enhancement of the ORNL UPAK histogramming software package; and developing standard formats for Gammasphere data products. In addition, they have established a new public ftp archive to distribute software and software development tools and information.

  9. Software Engineering Practices in the Development of NASA Unified Weather Research and Forecasting (NU-WRF) Model

    Science.gov (United States)

    Burns, R.; Zhou, S.; Syed, R.

    2010-12-01

    The NASA Unified Weather Research and Forecasting (NU-WRF) Model is an effort to unify several WRF variants developed at NASA and bring together NASA's existing earth science models and assimilation systems that simulate the interaction among clouds, aerosols, atmospheric gases, precipitation, and land surfaces. By developing NU-WRF, the NASA modeling community expects to: (1) facilitate better use of WRF for scientific research, (2) reduce redundancy in major WRF development, (3) prolong the serviceable life span of WRF, and (4) allow better use of NASA high-resolution satellite data for short term climate and weather research. This project involves multiple teams from different organizations and the research goals are still evolving. As a result, software engineering best practices are needed for software life-cycle management and testing, and to ensure reliability of the data being generated. NASA software engineers and scientists have worked together to develop software requirements, scientific use cases, automated regression tests, software release plans, and a revision control system. Nightly automated regression tests are being used on scaled-down versions of the use cases to test if any code changes have unintentionally changed the science results or made the software unstable. Revision control management is needed to track software changes that are made by the many developers involved in the project. The release planning helps to guide the release of NU-WRF versions to the NASA community and allows for making strategic changes in delivery dates and software features as needed. The team of software engineers and scientists have also worked on optimizing, generalizing, and testing existing model preprocessing codes and run scripts for the various models. Finally, the team developed model coupling tools to link WRF with NASA earth science models. NU-WRF 1.0 was based on WRF3.1.1 and was released to the NASA community in July 2010, providing the researchers

  10. The Ragnarok Software Development Environment

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak

    1999-01-01

    Ragnarok is an experimental software development environment that focuses on enhanced support for managerial activities in large scale software development taking the daily work of the software developer as its point of departure. The main emphasis is support in three areas: management, navigation......, and collaboration. The leitmotif is the software architecture, which is extended to handle managerial data in addition to source code; this extended software architecture is put under tight version- and configuration management control and furthermore used as basis for visualisation. Preliminary results of using...

  11. Software-Engineering Process Simulation (SEPS) model

    Science.gov (United States)

    Lin, C. Y.; Abdel-Hamid, T.; Sherif, J. S.

    1992-01-01

    The Software Engineering Process Simulation (SEPS) model is described which was developed at JPL. SEPS is a dynamic simulation model of the software project development process. It uses the feedback principles of system dynamics to simulate the dynamic interactions among various software life cycle development activities and management decision making processes. The model is designed to be a planning tool to examine tradeoffs of cost, schedule, and functionality, and to test the implications of different managerial policies on a project's outcome. Furthermore, SEPS will enable software managers to gain a better understanding of the dynamics of software project development and perform postmodern assessments.

  12. Understanding Software Development Team Performance

    OpenAIRE

    G.P. SUDHAKAR

    2010-01-01

    This paper gives the popular definitions of team, essential characteristics of teams and team de-velopment stages. It discusses the previous empirical studies undertaken to investigate the software development team performance. The factors affecting the software development team performance have been explained. It reviews the past research done in finding the performance of software devel-opment teams. It also discusses some of the representative research done on team performance in non-softw...

  13. Development of an Open Source Image-Based Flow Modeling Software - SimVascular

    Science.gov (United States)

    Updegrove, Adam; Merkow, Jameson; Schiavazzi, Daniele; Wilson, Nathan; Marsden, Alison; Shadden, Shawn

    2014-11-01

    SimVascular (www.simvascular.org) is currently the only comprehensive software package that provides a complete pipeline from medical image data segmentation to patient specific blood flow simulation. This software and its derivatives have been used in hundreds of conference abstracts and peer-reviewed journal articles, as well as the foundation of medical startups. SimVascular was initially released in August 2007, yet major challenges and deterrents for new adopters were the requirement of licensing three expensive commercial libraries utilized by the software, a complicated build process, and a lack of documentation, support and organized maintenance. In the past year, the SimVascular team has made significant progress to integrate open source alternatives for the linear solver, solid modeling, and mesh generation commercial libraries required by the original public release. In addition, the build system, available distributions, and graphical user interface have been significantly enhanced. Finally, the software has been updated to enable users to directly run simulations using models and boundary condition values, included in the Vascular Model Repository (vascularmodel.org). In this presentation we will briefly overview the capabilities of the new SimVascular 2.0 release. National Science Foundation.

  14. A Software Development Platform for Mechatronic Systems

    DEFF Research Database (Denmark)

    Guan, Wei

    present a challenge to the practitioners who adopt conventional software development approach. An effective approach towards industrial production of software for mechatronic systems is needed. This approach requires a disciplined engineering process that encompasses model-driven engineering and component......-based software engineering, whereby we enable incremental software development using component models to address the essential design issues of real-time embedded systems. To this end, this dissertation presents a software development platform that provides an incremental model-driven development process based...... rigorous construction of systems. The incremental development process separates the development activities into prefabrication of reusable components, conguration and generation of applications using validated components, and elimination of design errors using model-based analysis and verfication methods...

  15. Chaste: A test-driven approach to software development for biological modelling

    KAUST Repository

    Pitt-Francis, Joe

    2009-12-01

    Chaste (\\'Cancer, heart and soft-tissue environment\\') is a software library and a set of test suites for computational simulations in the domain of biology. Current functionality has arisen from modelling in the fields of cancer, cardiac physiology and soft-tissue mechanics. It is released under the LGPL 2.1 licence. Chaste has been developed using agile programming methods. The project began in 2005 when it was reasoned that the modelling of a variety of physiological phenomena required both a generic mathematical modelling framework, and a generic computational/simulation framework. The Chaste project evolved from the Integrative Biology (IB) e-Science Project, an inter-institutional project aimed at developing a suitable IT infrastructure to support physiome-level computational modelling, with a primary focus on cardiac and cancer modelling. Program summary: Program title: Chaste. Catalogue identifier: AEFD_v1_0. Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEFD_v1_0.html. Program obtainable from: CPC Program Library, Queen\\'s University, Belfast, N. Ireland. Licensing provisions: LGPL 2.1. No. of lines in distributed program, including test data, etc.: 5 407 321. No. of bytes in distributed program, including test data, etc.: 42 004 554. Distribution format: tar.gz. Programming language: C++. Operating system: Unix. Has the code been vectorised or parallelized?: Yes. Parallelized using MPI. RAM:< 90   Megabytes for two of the scenarios described in Section 6 of the manuscript (Monodomain re-entry on a slab or Cylindrical crypt simulation). Up to 16 Gigabytes (distributed across processors) for full resolution bidomain cardiac simulation. Classification: 3. External routines: Boost, CodeSynthesis XSD, CxxTest, HDF5, METIS, MPI, PETSc, Triangle, Xerces. Nature of problem: Chaste may be used for solving coupled ODE and PDE systems arising from modelling biological systems. Use of Chaste in two application areas are described in this paper: cardiac

  16. Development of virtual hands using animation software and graphical modelling; Elaboracao de maos virtuais usando software de animacao e modelagem grafica

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Erick da S.; Junior, Alberico B. de C. [Universidade Federal de Sergipe (UFSE), Sao Cristovao, SE (Brazil)

    2016-07-01

    The numerical dosimetry uses virtual anthropomorphic simulators to represent the human being in computational framework and thus assess the risks associated with exposure to a radioactive source. With the development of computer animation software, the development of these simulators was facilitated using only knowledge of human anatomy to prepare various types of simulators (man, woman, child and baby) in various positions (sitting, standing, running) or part thereof (head, trunk and limbs). These simulators are constructed by loops of handling and due to the versatility of the method, one can create various geometries irradiation was not possible before. In this work, we have built an exhibition of a radiopharmaceutical scenario manipulating radioactive material using animation software and graphical modeling and anatomical database. (author)

  17. Light measurement model to assess software development process improvement Modelo liviano de medidas para evaluar la mejora de procesos de desarrollo de software MLM-PDS

    Directory of Open Access Journals (Sweden)

    Diana Vásquez

    2010-12-01

    Full Text Available Companies in software development in Colombia face a number of problems such as the construction of software in a artesian, empirical and disorganized way. Therefore, it is necessary for these companies to implement projects to improve their development processes, because ensure the quality of products, by improving their software processes, is a step that should give to be able to compete in the market. To implement process improvement models, it is not enough to say whether a company is actually getting benefits, definitely one of the first actions in a to improvement project is to be able to determine the current status of the process. Only by measuring it is possible to know the state of a process in an objective ay, and only through this it is possible to plan strategies and solutions, about improvements to make, depending on the objectives of the organization. This paper proposes a light model to assess software development process, which seeks to help the Colombian software development companies to determine whether the process of implementing improvements, being effective in achieving the objectives and goals set to implement this, through the use of measures to evaluate the process of improving their development processes, allowing characterize the current practices of the company, identifying weaknesses, strengths and abilities of the processes that are carried out within this and thus control or prevent the causes of low quality, or deviations in costs or planning.Las empresas de desarrollo de software en Colombia enfrentan una serie de problemas tales como la construcción de software de forma artesanal, empírica y desorganizada. Por esto, es necesario que implementen proyectos para mejorar sus procesos de desarrollo, ya que asegurar la calidad de los productos,a través de la mejora de sus procesos de software, es un paso que deben dar para estar en condiciones de competir en el mercado nacional e internacional. Implementar modelos

  18. MEASUREMENT PROCESS OF SOFTWARE DEVELOPMENT PROJECTS FOR SUPPORTING STRATEGIC BUSINESS OBJECTIVES IN SOFTWARE DEVELOPING COMPANIES

    Directory of Open Access Journals (Sweden)

    Sandra Lais Pedroso

    2013-08-01

    Full Text Available Software developing companies work in a competitive market and are often challenged to make business decisions with impact on competitiveness. Models accessing maturity for software development processes quality, such as CMMI and MPS-BR, comprise process measurements systems (PMS. However, these models are not necessarily suitable to support business decisions, neither to achieve strategic goals. The objective of this work is to analyze how the PMS of software development projects could support business strategies for software developing companies. Results taken from this work show that PMS results from maturity models for software processes can be suited to help evaluating operating capabilities and supporting strategic business decisions.

  19. High performance in software development

    CERN Document Server

    CERN. Geneva; Haapio, Petri; Liukkonen, Juha-Matti

    2015-01-01

    What are the ingredients of high-performing software? Software development, especially for large high-performance systems, is one the most complex tasks mankind has ever tried. Technological change leads to huge opportunities but challenges our old ways of working. Processing large data sets, possibly in real time or with other tight computational constraints, requires an efficient solution architecture. Efficiency requirements span from the distributed storage and large-scale organization of computation and data onto the lowest level of processor and data bus behavior. Integrating performance behavior over these levels is especially important when the computation is resource-bounded, as it is in numerics: physical simulation, machine learning, estimation of statistical models, etc. For example, memory locality and utilization of vector processing are essential for harnessing the computing power of modern processor architectures due to the deep memory hierarchies of modern general-purpose computers. As a r...

  20. Agility in Development of Safety-Critical Software: A Conceptual Model

    DEFF Research Database (Denmark)

    Tordrup Heeager, Lise; Nielsen, Peter Axel

    2017-01-01

    Safety-critical information systems are being used increasingly as we see applications in new areas such as personal medical devices, traffic control and detection of pathogens. A current research debate is whether safety-critical systems must be developed with traditional waterfall processes...... or agile processes which are faster and will lead to better products. In this paper we review the diverse research literature on agility in safety-critical software development. There are key propositions that we pull from the literature and combine into a framework for understanding the foundational...... challenges and the contingencies of agile development of safety-critical software. The framework consists of four problematic practice areas (which the literature mainly has focused on) and five relationships, which we suggest is even more important than the problematic areas. From this review we suggest...

  1. Some Observations On Open Source Software Development On Software Engineering Perspectives

    Directory of Open Access Journals (Sweden)

    Vinay Tiwari

    2010-12-01

    Full Text Available Several argument has been made that open source software development process some times also referred as free and open source software development (FOSSD violates the traditional softwareengineering principles and researches advocates to rethink and re-evaluate the studies and concepts of software engineering. The aim of this paper is to investigate the software development process models of Open source software on the software engineering perspectives. In this paper a discussion on some of development models of OSS and their comparison with the traditional development models is made and the software engineering practices followed in open source development environment is also been discussed. Principle difference and similarities of these development models with the conventional models are also discussed. The ultimate goal is to understand how open source software development processesare similar to or different from software engineering processes and to bring better understanding to the development process of Open Source Software.

  2. A Decision Tool that Combines Discrete Event Software Process Models with System Dynamics Pieces for Software Development Cost Estimation and Analysis

    Science.gov (United States)

    Mizell, Carolyn Barrett; Malone, Linda

    2007-01-01

    The development process for a large software development project is very complex and dependent on many variables that are dynamic and interrelated. Factors such as size, productivity and defect injection rates will have substantial impact on the project in terms of cost and schedule. These factors can be affected by the intricacies of the process itself as well as human behavior because the process is very labor intensive. The complex nature of the development process can be investigated with software development process models that utilize discrete event simulation to analyze the effects of process changes. The organizational environment and its effects on the workforce can be analyzed with system dynamics that utilizes continuous simulation. Each has unique strengths and the benefits of both types can be exploited by combining a system dynamics model and a discrete event process model. This paper will demonstrate how the two types of models can be combined to investigate the impacts of human resource interactions on productivity and ultimately on cost and schedule.

  3. Development and application of a complex numerical model and software for the computation of dose conversion factors for radon progenies.

    Science.gov (United States)

    Farkas, Árpád; Balásházy, Imre

    2015-04-01

    A more exact determination of dose conversion factors associated with radon progeny inhalation was possible due to the advancements in epidemiological health risk estimates in the last years. The enhancement of computational power and the development of numerical techniques allow computing dose conversion factors with increasing reliability. The objective of this study was to develop an integrated model and software based on a self-developed airway deposition code, an own bronchial dosimetry model and the computational methods accepted by International Commission on Radiological Protection (ICRP) to calculate dose conversion coefficients for different exposure conditions. The model was tested by its application for exposure and breathing conditions characteristic of mines and homes. The dose conversion factors were 8 and 16 mSv WLM(-1) for homes and mines when applying a stochastic deposition model combined with the ICRP dosimetry model (named PM-A model), and 9 and 17 mSv WLM(-1) when applying the same deposition model combined with authors' bronchial dosimetry model and the ICRP bronchiolar and alveolar-interstitial dosimetry model (called PM-B model). User friendly software for the computation of dose conversion factors has also been developed. The software allows one to compute conversion factors for a large range of exposure and breathing parameters and to perform sensitivity analyses. © The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  4. Use of the EMTP-ATP Software to Develop a Dynamic Model of the Technological Centre

    Directory of Open Access Journals (Sweden)

    Tomas Mozdren

    2016-01-01

    Full Text Available This paper deals with analysis of power generating units installed within the technological centre. To be able to analyse behaviour of such a complex system with accumulation, the dynamic model of the technology was created using the EMTP-ATP software. The current configuration of the dynamic model is based on the block diagram containing all the unconventional sources of electric power. The values produced by ATPDraw are shown in graphs for reference. The dynamic model will serve the purpose of research and observation of the entire technological centre with respect to transients at individual sources of power.

  5. Development of the quality assessment model of EHR software in family medicine practices: research based on user satisfaction

    Directory of Open Access Journals (Sweden)

    Damir Kralj

    2015-09-01

    Full Text Available Background Family medicine practices (FMPs make the basis for the Croatian health care system. Use of electronic health record (EHR software is mandatory and it plays an important role in running these practices, but important functional features still remain uneven and largely left to the will of the software developers.Objective The objective of this study was to develop a novel and comprehensive model for functional evaluation of the EHR software in FMPs, based on current world standards, models and projects, as well as on actual user satisfaction and requirements.Methods Based on previous theoretical and experimental research in this area, we made the initial framework model consisting of six basic categories as a base for online survey questionnaire. Family doctors assessed perceived software quality by using a five-point Likert-type scale. Using exploratory factor analysis and appropriate statistical methods over the collected data, the final optimal structure of the novel model was formed. Special attention was focused on the validity and quality of the novel model.Results The online survey collected a total of 384 cases. The obtained results indicate both the quality of the assessed software and the quality in use of the novel model. The intense ergonomic orientation of the novel measurement model was particularly emphasised.Conclusions The resulting novel model is multiple validated, comprehensive and universal. It could be used to assess the user-perceived quality of almost all forms of the ambulatory EHR software and therefore useful to all stakeholders in this area of the health care informatisation. 

  6. Software development: A paradigm for the future

    Science.gov (United States)

    Basili, Victor R.

    1989-01-01

    A new paradigm for software development that treats software development as an experimental activity is presented. It provides built-in mechanisms for learning how to develop software better and reusing previous experience in the forms of knowledge, processes, and products. It uses models and measures to aid in the tasks of characterization, evaluation and motivation. An organization scheme is proposed for separating the project-specific focus from the organization's learning and reuse focuses of software development. The implications of this approach for corporations, research and education are discussed and some research activities currently underway at the University of Maryland that support this approach are presented.

  7. MEASURING PRODUCTIVITY OF SOFTWARE DEVELOPMENT TEAMS

    OpenAIRE

    Goparaju Purna Sudhakar; Ayesha Farooq; Sanghamitra Patnaik

    2012-01-01

    This paper gives an exhaustive literature review of the techniques and models available tomeasure the productivity of software development teams. Definition of productivity, measuringindividual programmer’s productivity, and measuring software development team productivity arediscussed. Based on the literature review it was found that software productivity measurement canbe done using SLOC (Source Lines of Code), function points, use case points, object points, andfeature points. Secondary re...

  8. Reviews in innovative software development

    DEFF Research Database (Denmark)

    Aaen, Ivan; Boelsmand, Jeppe Vestergaard; Jensen, Rasmus

    2009-01-01

    This paper proposes a new review approach for innovative software development. Innovative software development implies that requirements are rarely available as a basis for reviewing and that the purpose of a review is as much to forward additional ideas, as to validate what has been accomplished...

  9. Aspect-Oriented Software Development

    NARCIS (Netherlands)

    Filman, R.E.; Elrad, T.; Clarke, S.; Aksit, Mehmet; Unknown, [Unknown

    2004-01-01

    Software development is changing. The opportunities of the Internet, computerized businesses, and computer-savvy consumers, the exponential decline in the cost of computation and communication, and the increasingly dynamic environment for longer-living systems are pressing software developers to

  10. Challenges in Mentoring Software Development Projects in the High School: Analysis According to Shulman's Teacher Knowledge Base Model

    Science.gov (United States)

    Meerbaum-Salant, Orni; Hazzan, Orit

    2009-01-01

    This paper focuses on challenges in mentoring software development projects in the high school and analyzes difficulties encountered by Computer Science teachers in the mentoring process according to Shulman's Teacher Knowledge Base Model. The main difficulties that emerged from the data analysis belong to the following knowledge sources of…

  11. Challenges in Mentoring Software Development Projects in the High School: Analysis According to Shulman's Teacher Knowledge Base Model

    Science.gov (United States)

    Meerbaum-Salant, Orni; Hazzan, Orit

    2009-01-01

    This paper focuses on challenges in mentoring software development projects in the high school and analyzes difficulties encountered by Computer Science teachers in the mentoring process according to Shulman's Teacher Knowledge Base Model. The main difficulties that emerged from the data analysis belong to the following knowledge sources of…

  12. Software Assurance Using Structured Assurance Case Models.

    Science.gov (United States)

    Rhodes, Thomas; Boland, Frederick; Fong, Elizabeth; Kass, Michael

    2010-01-01

    Software assurance is an important part of the software development process to reduce risks and ensure that the software is dependable and trustworthy. Software defects and weaknesses can often lead to software errors and failures and to exploitation by malicious users. Testing, certification and accreditation have been traditionally used in the software assurance process to attempt to improve software trustworthiness. In this paper, we examine a methodology known as a structured assurance model, which has been widely used for assuring system safety, for its potential application to software assurance. We describe the structured assurance model and examine its application and use for software assurance. We identify strengths and weaknesses of this approach and suggest areas for further investigation and testing.

  13. Analysis on Some of Software Reliability Models

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Software reliability & maintainability evaluation tool (SRMET 3.0) is introducted in detail in this paper,which was developed by Software Evaluation and Test Center of China Aerospace Mechanical Corporation. SRMET 3.0is supported by seven soft ware reliability models and four software maintainability models. Numerical characteristicsfor all those models are deeply studied in this paper, and corresponding numerical algorithms for each model are alsogiven in the paper.

  14. Data Assimilation Tools for CO2 Reservoir Model Development – A Review of Key Data Types, Analyses, and Selected Software

    Energy Technology Data Exchange (ETDEWEB)

    Rockhold, Mark L.; Sullivan, E. C.; Murray, Christopher J.; Last, George V.; Black, Gary D.

    2009-09-30

    Pacific Northwest National Laboratory (PNNL) has embarked on an initiative to develop world-class capabilities for performing experimental and computational analyses associated with geologic sequestration of carbon dioxide. The ultimate goal of this initiative is to provide science-based solutions for helping to mitigate the adverse effects of greenhouse gas emissions. This Laboratory-Directed Research and Development (LDRD) initiative currently has two primary focus areas—advanced experimental methods and computational analysis. The experimental methods focus area involves the development of new experimental capabilities, supported in part by the U.S. Department of Energy’s (DOE) Environmental Molecular Science Laboratory (EMSL) housed at PNNL, for quantifying mineral reaction kinetics with CO2 under high temperature and pressure (supercritical) conditions. The computational analysis focus area involves numerical simulation of coupled, multi-scale processes associated with CO2 sequestration in geologic media, and the development of software to facilitate building and parameterizing conceptual and numerical models of subsurface reservoirs that represent geologic repositories for injected CO2. This report describes work in support of the computational analysis focus area. The computational analysis focus area currently consists of several collaborative research projects. These are all geared towards the development and application of conceptual and numerical models for geologic sequestration of CO2. The software being developed for this focus area is referred to as the Geologic Sequestration Software Suite or GS3. A wiki-based software framework is being developed to support GS3. This report summarizes work performed in FY09 on one of the LDRD projects in the computational analysis focus area. The title of this project is Data Assimilation Tools for CO2 Reservoir Model Development. Some key objectives of this project in FY09 were to assess the current state

  15. Lean software development in action

    CERN Document Server

    Janes, Andrea

    2014-01-01

    This book illustrates how goal-oriented, automated measurement can be used to create Lean organizations and to facilitate the development of Lean software, while also demonstrating the practical implementation of Lean software development by combining tried and trusted tools. In order to be successful, a Lean orientation of software development has to go hand in hand with a company's overall business strategy. To achieve this, two interrelated aspects require special attention: measurement and experience management. In this book, Janes and Succi provide the necessary knowledge to establish "

  16. Online Rule Generation Software Process Model

    Directory of Open Access Journals (Sweden)

    Sudeep Marwaha

    2013-07-01

    Full Text Available For production systems like expert systems, a rule generation software can facilitate the faster deployment. The software process model for rule generation using decision tree classifier refers to the various steps required to be executed for the development of a web based software model for decision rule generation. The Royce’s final waterfall model has been used in this paper to explain the software development process. The paper presents the specific output of various steps of modified waterfall model for decision rules generation.

  17. Software based controls module development

    Energy Technology Data Exchange (ETDEWEB)

    Graves, v.b.; kelley, g; welch, j.c.

    1999-12-10

    A project was initiated at the Oak Ridge Y-12 Plant to implement software geometric error compensation within a PC-based machine tool controller from Manufacturing Data Systems, Inc. This project may be the first in which this type of compensation system was implemented in a commercially available machine tool controller totally in software. Previous implementations typically required using an external computer and hardware to interface through the position feedback loop of the controller because direct access to the controller software was not available. The test-bed machine for this project was a 2-axis Excello 921 T-base lathe. A mathematical error model of the lathe was created using homogeneous transformation matrices to relate the positions of the machine's slides to each other and to a world reference system. Equations describing the effects of the geometric errors were derived from the model. A software architecture was developed to support geometric error compensation for machine tools with up to 3 linear axes. Rotary axes were not supported in this implementation, but the developed architecture would not preclude their support in the future. Specific implementations will be dependent upon the configuration of the machine tool. A laser measuring system from Automated Precision, Inc. was used to characterize the lathe's geometric errors as functions of axis position and direction of motion. Multiple data files generated by the laser system were combined into a single Error File that was read at system startup and used by the compensation system to provide real-time position adjustments to the axis servos. A Renishaw Ballbar was used to evaluate the compensation system. Static positioning tests were conducted in an attempt to observe improved positioning accuracy with the compensation system enabled. These tests gave inconsistent results due to the lathe's inability to position the tool repeatably. The development of the architecture and

  18. Software Development Standard Processes (SDSP)

    Science.gov (United States)

    Lavin, Milton L.; Wang, James J.; Morillo, Ronald; Mayer, John T.; Jamshidian, Barzia; Shimizu, Kenneth J.; Wilkinson, Belinda M.; Hihn, Jairus M.; Borgen, Rosana B.; Meyer, Kenneth N.; Crean, Kathleen A.; Rinker, George C.; Smith, Thomas P.; Lum, Karen T.; Hanna, Robert A.; Erickson, Daniel E.; Gamble, Edward B., Jr.; Morgan, Scott C.; Kelsay, Michael G.; Newport, Brian J.; Lewicki, Scott A.; Stipanuk, Jeane G.; Cooper, Tonja M.; Meshkat, Leila

    2011-01-01

    A JPL-created set of standard processes is to be used throughout the lifecycle of software development. These SDSPs cover a range of activities, from management and engineering activities, to assurance and support activities. These processes must be applied to software tasks per a prescribed set of procedures. JPL s Software Quality Improvement Project is currently working at the behest of the JPL Software Process Owner to ensure that all applicable software tasks follow these procedures. The SDSPs are captured as a set of 22 standards in JPL s software process domain. They were developed in-house at JPL by a number of Subject Matter Experts (SMEs) residing primarily within the Engineering and Science Directorate, but also from the Business Operations Directorate and Safety and Mission Success Directorate. These practices include not only currently performed best practices, but also JPL-desired future practices in key thrust areas like software architecting and software reuse analysis. Additionally, these SDSPs conform to many standards and requirements to which JPL projects are beholden.

  19. Software reliability models for critical applications

    Energy Technology Data Exchange (ETDEWEB)

    Pham, H.; Pham, M.

    1991-12-01

    This report presents the results of the first phase of the ongoing EG&G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  20. Software reliability models for critical applications

    Energy Technology Data Exchange (ETDEWEB)

    Pham, H.; Pham, M.

    1991-12-01

    This report presents the results of the first phase of the ongoing EG G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  1. Formalizing the ISDF Software Development Methodology

    Directory of Open Access Journals (Sweden)

    Mihai Liviu DESPA

    2015-01-01

    Full Text Available The paper is aimed at depicting the ISDF software development methodology by emphasizing quality management and software development lifecycle. The ISDF methodology was built especially for innovative software development projects. The ISDF methodology was developed empirically by trial and error in the process of implementing multiple innovative projects. The research process began by analysing key concepts like innovation and software development and by settling the important dilemma of what makes a web application innovative. Innovation in software development is presented from the end-user, project owner and project manager’s point of view. The main components of a software development methodology are identified. Thus a software development methodology should account for people, roles, skills, teams, tools, techniques, processes, activities, standards, quality measuring tools, and team values. Current software development models are presented and briefly analysed. The need for a dedicated innovation oriented software development methodology is emphasized by highlighting shortcomings of current software development methodologies when tackling innovation. The ISDF methodology is presented in the context of developing an actual application. The ALHPA application is used as a case study for emphasizing the characteristics of the ISDF methodology. The development life cycle of the ISDF methodology includes research, planning, prototyping, design, development, testing, setup and maintenance. Artefacts generated by the ISDF methodology are presented. Quality is managed in the ISDF methodology by assessing compliance, usability, reliability, repeatability, availability and security. In order to properly asses each quality component a dedicated indicator is built. A template for interpreting each indicator is provided. Conclusions are formulated and new related research topics are submitted for debate.

  2. Social software in global software development

    DEFF Research Database (Denmark)

    2010-01-01

    Social software (SoSo) is defined by Farkas as tools that (1) allow people to communicate, collaborate, and build community online (2) can be syndicated, shared, reused or remixed and (3) let people learn easily from and capitalize on the behavior and knowledge of others. [1]. SoSo include a wide...... variety of tools such as: instant messaging, internet forums, mailing lists, blogs, wikis, social network sites, social bookmarking, social libraries, virtual worlds. Though normally rather belonging to the private realm, the use of social software in corporate context has been reported, e.g. as a way...

  3. Social software in global software development

    DEFF Research Database (Denmark)

    2010-01-01

    Social software (SoSo) is defined by Farkas as tools that (1) allow people to communicate, collaborate, and build community online (2) can be syndicated, shared, reused or remixed and (3) let people learn easily from and capitalize on the behavior and knowledge of others. [1]. SoSo include a wide...... variety of tools such as: instant messaging, internet forums, mailing lists, blogs, wikis, social network sites, social bookmarking, social libraries, virtual worlds. Though normally rather belonging to the private realm, the use of social software in corporate context has been reported, e.g. as a way...

  4. Patterns in Software Development

    DEFF Research Database (Denmark)

    Corry, Aino Vonge

    of abstract solutions often occurring problems, and the benefits they are claimed to provide, are: common vocabulary, enhanced documentation and shared experience. In the writing of our masters thesis, it occurred to us that things could be better, and that something had to be done to actually achieve......This thesis springs from a wish to make a better place to live in. It could be argued that other studies, like marine ecology, biotechnology or medicine might be more suited for that wish. But the subjects I studied were computer science and mathematics and I had to take the consequence and make...... described in this thesis has the potential to help developers in their system development and thereby, in turn, make the world a better place to live in for developers. ...

  5. The Program for Climate Model Diagnosis and Intercomparison (PCMDI) Software Development: Applications, Infrastructure, and Middleware/Networks

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Dean N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2011-06-30

    The status of and future plans for the Program for Climate Model Diagnosis and Intercomparison (PCMDI) hinge on software that PCMDI is either currently distributing or plans to distribute to the climate community in the near future. These software products include standard conventions, national and international federated infrastructures, and community analysis and visualization tools. This report also mentions other secondary software not necessarily led by or developed at PCMDI to provide a complete picture of the overarching applications, infrastructures, and middleware/networks. Much of the software described anticipates the use of future technologies envisioned over the span of next year to 10 years. These technologies, together with the software, will be the catalyst required to address extreme-scale data warehousing, scalability issues, and service-level requirements for a diverse set of well-known projects essential for predicting climate change. These tools, unlike the previous static analysis tools of the past, will support the co-existence of many users in a productive, shared virtual environment. This advanced technological world driven by extreme-scale computing and the data it generates will increase scientists’ productivity, exploit national and international relationships, and push research to new levels of understanding.

  6. Developing Sustainable Modeling Software and Necessary Data Repository for Volcanic Hazard Analysis -- Some Lessons Learnt

    Science.gov (United States)

    Patra, A. K.; Connor, C.; Webley, P.; Jones, M.; Charbonnier, S. J.; Connor, L.; Gallo, S.; Bursik, M. I.; Valentine, G.; Hughes, C. G.; Aghakhani, H.; Renschler, C. S.; Kosar, T.

    2014-12-01

    We report here on an effort to improve the sustainability, robustness and usability of the core modeling and simulation tools housed in the collaboratory VHub.org and used in the study of complex volcanic behavior. In particular, we focus on tools that support large scale mass flows (TITAN2D), ash deposition/transport and dispersal (Tephra2 and PUFF), and lava flows (Lava2). These tools have become very popular in the community especially due to the availability of an online usage modality. The redevelopment of the tools ot take advantage of new hardware and software advances was a primary thrust for the effort. However, as we start work we have reoriented the effort to also take advantage of significant new opportunities for supporting the complex workflows and use of distributed data resources that will enable effective and efficient hazard analysis.

  7. Fundamentals of multicore software development

    CERN Document Server

    Pankratius, Victor; Tichy, Walter F

    2011-01-01

    With multicore processors now in every computer, server, and embedded device, the need for cost-effective, reliable parallel software has never been greater. By explaining key aspects of multicore programming, Fundamentals of Multicore Software Development helps software engineers understand parallel programming and master the multicore challenge. Accessible to newcomers to the field, the book captures the state of the art of multicore programming in computer science. It covers the fundamentals of multicore hardware, parallel design patterns, and parallel programming in C++, .NET, and Java. It

  8. Usability Evaluation Method for Agile Software Development

    Directory of Open Access Journals (Sweden)

    Saad Masood Butt

    2015-02-01

    Full Text Available Agile methods are the best fit for tremendously growing software industry due to its flexible and dynamic nature. But the software developed using agile methods do meet the usability standards? To answer this question we can see that majority of agile software development projects currently involve interactive user interface designs, which can only be possible by following User Centered Design (UCD in agile methods. The question here is, how to integrate UCD with agile models. Both Agile models and UCD are iterative in nature but agile models focus on coding and development of software; whereas, UCD focuses on user interface of the software. Similarly, both of them have testing features where the agile model involves automated tested code while UCD involves an expert or a user to test the user interface. In this paper, a new agile usability model is proposed and the evaluation is of the proposed model is presented by practically implementing it in three real life projects. . Key results from these projects clearly show: the proposed agile model incorporates usability evaluation methods, improves the relationship between usability experts to work with agile software experts; in addition, allows agile developers to incorporate the result from UCD into subsequent interactions.

  9. Introducing a Method for Modeling Knowledge Bases in Expert Systems Using the Example of Large Software Development Projects

    Directory of Open Access Journals (Sweden)

    Franz Felix Füssl

    2015-12-01

    Full Text Available Goal of this paper is to develop a meta-model, which provides the basis for developing highly scalable artificial intelligence systems that should be able to make autonomously decisions based on different dynamic and specific influences. An artificial neural network builds the entry point for developing a multi-layered human readable model that serves as knowledge base and can be used for further investigations in deductive and inductive reasoning. A graph-theoretical consideration gives a detailed view into the model structure. In addition to it the model is introduced using the example of large software development projects. The integration of Constraints and Deductive Reasoning Element Pruning are illustrated, which are required for executing deductive reasoning efficiently.

  10. Cost estimation of feature oriented software development: Statistical approach

    Directory of Open Access Journals (Sweden)

    Jawad Khan

    2016-12-01

    Full Text Available Software cost estimation is the important part of software development and used to predict the effort which is mandatory part for development of software system. Feature Model is a set of products that represents set of feature in feature model. Software cost estimation is about predicting amount of cost in software development cycle. SCE give analysis both to user as well customer regarding to budging planning. In this paper we have represent a statistical approach for finding cost estimation of feature oriented software development. We have used CPM approach from which we will find commonality as well cost of each feature which will be deploy in feature oriented software development.

  11. Development of the software tool for generation and visualization of the finite element head model with bone conduction sounds

    Science.gov (United States)

    Nikolić, Dalibor; Milošević, Žarko; Saveljić, Igor; Filipović, Nenad

    2015-12-01

    Vibration of the skull causes a hearing sensation. We call it Bone Conduction (BC) sound. There are several investigations about transmission properties of bone conducted sound. The aim of this study was to develop a software tool for easy generation of the finite element (FE) model of the human head with different materials based on human head anatomy and to calculate sound conduction through the head. Developed software tool generates a model in a few steps. The first step is to do segmentation of CT medical images (DICOM) and to generate a surface mesh files (STL). Each STL file presents a different layer of human head with different material properties (brain, CSF, different layers of the skull bone, skin, etc.). The next steps are to make tetrahedral mesh from obtained STL files, to define FE model boundary conditions and to solve FE equations. This tool uses PAK solver, which is the open source software implemented in SIFEM FP7 project, for calculations of the head vibration. Purpose of this tool is to show impact of the bone conduction sound of the head on the hearing system and to estimate matching of obtained results with experimental measurements.

  12. Understanding flexible and distributed software development processes

    OpenAIRE

    Agerfalk, Par J.; Fitzgerald, Brian

    2006-01-01

    peer-reviewed The minitrack on Flexible and Distributed Software Development Processes addresses two important and partially intertwined current themes in software development: process flexibility and globally distributed software development

  13. Software Development Effort Estimation Techniques: A Review

    Directory of Open Access Journals (Sweden)

    Rshma Chawla

    2014-09-01

    Full Text Available The most important activity in software project management process is the estimation of Software development effort. The literature shows many algorithmic cost estimation models such as Boehm’s COCOMO, Albrecht's Function Point Analysis, Putnam’s SLIM, ESTIMACS, Soft computing based techniques etc., but each model have their own advantages and disadvantages in predicting development cost and effort. This is because of the availability of project data in the initial stages of development process is often incomplete, inconsistent and vague. The accurate effort estimation in software project management process is major challenge. This paper is a systematic reviewof classic and contemporary literature on software effort estimation. A systematicsearch is done across data sources to understand the issues and research problems ineffort estimation problem domain

  14. Usability in open source software development

    DEFF Research Database (Denmark)

    Andreasen, M. S.; Nielsen, H. V.; Schrøder, S. O.

    2006-01-01

    Open Source Software (OSS) development has gained significant importance in the production of soft-ware products. Open Source Software developers have produced systems with a functionality that is competitive with similar proprietary software developed by commercial software organizations. Yet OSS...

  15. The MINERVA Software Development Process

    Science.gov (United States)

    Narkawicz, Anthony; Munoz, Cesar A.; Dutle, Aaron M.

    2017-01-01

    This paper presents a software development process for safety-critical software components of cyber-physical systems. The process is called MINERVA, which stands for Mirrored Implementation Numerically Evaluated against Rigorously Verified Algorithms. The process relies on formal methods for rigorously validating code against its requirements. The software development process uses: (1) a formal specification language for describing the algorithms and their functional requirements, (2) an interactive theorem prover for formally verifying the correctness of the algorithms, (3) test cases that stress the code, and (4) numerical evaluation on these test cases of both the algorithm specifications and their implementations in code. The MINERVA process is illustrated in this paper with an application to geo-containment algorithms for unmanned aircraft systems. These algorithms ensure that the position of an aircraft never leaves a predetermined polygon region and provide recovery maneuvers when the region is inadvertently exited.

  16. Strategies for Developing China's Software Industry

    Directory of Open Access Journals (Sweden)

    Mingzhi Li

    2003-01-01

    Full Text Available The software industry is deemed an ideal target for a developing country to integrate into the world information and communications technology (ICT market. On the one hand the industry is labor intensive, and the developing countries have a large labor surplus; on the other hand, it is a worldwide trend for developed countries to outsource a vast amount of low-end, software-related tasks to the low-cost countries and regions, which fits into some developing countries’ caliber nicely. India has often been cited as the role model for a developing country to tap into the world software market for its continuous success in the software export sector. In comparison, China’s software industry is still negligible in the world despite its sustained high economic growth rate since the economic reform took off in the late 1970s.This paper aims at examining strategies for developing China’s software industry. We use India as a reference because of the similarities of the two countries’ stages of economic development and the clear divergence in their ICT structures and development paths. Although the language barrier has often been singled out as the major obstacle for China’s software exports, we believe the major reasons for its underdevelopment can be ascribed to the following factors. On the national level, the government attention has been skewed toward the hardware sector in the ICT industry, and there is no clear national vision for the strategic direction for the software industry.On the industry and ªrm level, software development has been regarded as the art of individual creativity rather than an engineering process. As a result, the importance of quality and standards, the two important critical factors in software development, have been largely neglected. Perhaps an even more fundamental factor lies in the deeply rooted notion that software is an attachment to the hardware and should be a free product. The lack of intellectual

  17. Rapid Development of Guidance, Navigation, and Control Core Flight System Software Applications Using Simulink Models Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We will demonstrate the usefulness of SIL for GSFC missions by attempting to compile the SIL source code with an autocoded sample GNC application flight software....

  18. Model-driven software migration a methodology

    CERN Document Server

    Wagner, Christian

    2014-01-01

    Today, reliable software systems are the basis of any business or company. The continuous further development of those systems is the central component in software evolution. It requires a huge amount of time- man power- as well as financial resources. The challenges are size, seniority and heterogeneity of those software systems. Christian Wagner addresses software evolution: the inherent problems and uncertainties in the process. He presents a model-driven method which leads to a synchronization between source code and design. As a result the model layer will be the central part in further e

  19. Post-Modern Software Development

    Science.gov (United States)

    Filman, Robert E.

    2005-01-01

    The history of software development includes elements of art, science, engineering, and fashion(though very little manufacturing). In all domains, old ideas give way or evolve to new ones: in the fine arts, the baroque gave way to rococo, romanticism, modernism, postmodernism, and so forth. What is the postmodern programming equivalent? That is, what comes after object orientation?

  20. SOFTWARE RELIABILITY MODEL FOR COMPONENT INTERACTION MODE

    Institute of Scientific and Technical Information of China (English)

    Wang Qiang; Lu Yang; Xu Zijun; Han Jianghong

    2011-01-01

    With the rapid progress of component technology,the software development methodology of gathering a large number of components for designing complex software systems has matured.But,how to assess the application reliability accurately with the information of system architecture and the components reliabilities together has become a knotty problem.In this paper,the defects in formal description of software architecture and the limitations in existed model assumptions are both analyzed.Moreover,a new software reliability model called Component Interaction Mode (CIM) is proposed.With this model,the problem for existed component-based software reliability analysis models that cannot deal with the cases of component interaction with non-failure independent and non-random control transition is resolved.At last,the practice examples are presented to illustrate the effectiveness of this model

  1. Patterns of Software Development Process

    Directory of Open Access Journals (Sweden)

    Sandro Javier Bolaños Castro

    2011-12-01

    Full Text Available "Times New Roman","serif";mso-fareast-font-family:"Times New Roman";mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">This article presents a set of patterns that can be found to perform best practices in software processes that are directly related to the problem of implementing the activities of the process, the roles involved, the knowledge generated and the inputs and outputs belonging to the process. In this work, a definition of the architecture is encouraged by using different recurrent configurations that strengthen the process and yield efficient results for the development of a software project. The patterns presented constitute a catalog, which serves as a vocabulary for communication among project participants [1], [2], and also can be implemented through software tools, thus facilitating patterns implementation [3]. Additionally, a tool that can be obtained under GPL (General Public license is provided for this purpose

  2. Software cost/resource modeling: Software quality tradeoff measurement

    Science.gov (United States)

    Lawler, R. W.

    1980-01-01

    A conceptual framework for treating software quality from a total system perspective is developed. Examples are given to show how system quality objectives may be allocated to hardware and software; to illustrate trades among quality factors, both hardware and software, to achieve system performance objectives; and to illustrate the impact of certain design choices on software functionality.

  3. Energy modelling software

    CSIR Research Space (South Africa)

    Osburn, L

    2010-01-01

    Full Text Available The construction industry has turned to energy modelling in order to assist them in reducing the amount of energy consumed by buildings. However, while the energy loads of buildings can be accurately modelled, energy models often under...

  4. Design, development and validation of software for modelling dietary exposure to food chemicals and nutrients.

    Science.gov (United States)

    McNamara, C; Naddy, B; Rohan, D; Sexton, J

    2003-10-01

    The Monte Carlo computational system for stochastic modelling of dietary exposure to food chemicals and nutrients is presented. This system was developed through a European Commission-funded research project. It is accessible as a Web-based application service. The system allows and supports very significant complexity in the data sets used as the model input, but provides a simple, general purpose, linear kernel for model evaluation. Specific features of the system include the ability to enter (arbitrarily) complex mathematical or probabilistic expressions at each and every input data field, automatic bootstrapping on subjects and on subject food intake diaries, and custom kernels to apply brand information such as market share and loyalty to the calculation of food and chemical intake.

  5. Software Development Process Improvement Framework (SDPIF for Small Software Development Firms (SSDFs

    Directory of Open Access Journals (Sweden)

    Mejhem Yousef

    2013-01-01

    Full Text Available Most of the software development organizations all over the world are Small Software Development Firms (SSDFs. These firms have realized that it is necessary to organize and improve their software development and management activities. Traditional software process improvement (SPI models and standards are generally not possible to be implemented directly by SSDFs, as these firms are not capable of investing the cost of implementing these programs due to limited resources and strict deadlines to complete the projects. In addition, the existing regional SPI models which were developed for SSDFs are not suitable to be implemented by SSDFs all over the world. Furthermore, SSDFs also have ignored the software development practices to explain: how to do the improvement; as they only focus on: what to do for improvement. This paper presents a new software development process improvement framework (SDPIF for SSDFs based on eXtreme programming (XP as the software development method and Capability Maturity Model Integration version 1.2 for Development (CMMI-Dev1.2 as the SPI model.

  6. Adopting to Agile Software Development

    Directory of Open Access Journals (Sweden)

    Linkevics Gusts

    2014-12-01

    Full Text Available Agile software development can be made successful, but there is no well-defined way how to achieve this. The problem is that the successful adoption of agile methods and practices is a complex process and this process should be customizable for a particular organization or a team. This research focuses on identification of agile methods and practices. Result of the research is the ranking of agile methods, practices and their usage trends. As some terms of agile software development are interpreted differently in different organizations and teams, terminology used is analyzed. Results of the research can be used as a reference material for those who are planning to adopt agile methods or are looking for the next agile practice to implement. Results will be used for the development of an expert system to support agile adoption.

  7. Managing MDO Software Development Projects

    Science.gov (United States)

    Townsend, J. C.; Salas, A. O.

    2002-01-01

    Over the past decade, the NASA Langley Research Center developed a series of 'grand challenge' applications demonstrating the use of parallel and distributed computation and multidisciplinary design optimization. All but the last of these applications were focused on the high-speed civil transport vehicle; the final application focused on reusable launch vehicles. Teams of discipline experts developed these multidisciplinary applications by integrating legacy engineering analysis codes. As teams became larger and the application development became more complex with increasing levels of fidelity and numbers of disciplines, the need for applying software engineering practices became evident. This paper briefly introduces the application projects and then describes the approaches taken in project management and software engineering for each project; lessons learned are highlighted.

  8. Teaching and learning the Hodgkin-Huxley model based on software developed in NEURON's programming language hoc.

    Science.gov (United States)

    Hernández, Oscar E; Zurek, Eduardo E

    2013-05-15

    We present a software tool called SENB, which allows the geometric and biophysical neuronal properties in a simple computational model of a Hodgkin-Huxley (HH) axon to be changed. The aim of this work is to develop a didactic and easy-to-use computational tool in the NEURON simulation environment, which allows graphical visualization of both the passive and active conduction parameters and the geometric characteristics of a cylindrical axon with HH properties. The SENB software offers several advantages for teaching and learning electrophysiology. First, SENB offers ease and flexibility in determining the number of stimuli. Second, SENB allows immediate and simultaneous visualization, in the same window and time frame, of the evolution of the electrophysiological variables. Third, SENB calculates parameters such as time and space constants, stimuli frequency, cellular area and volume, sodium and potassium equilibrium potentials, and propagation velocity of the action potentials. Furthermore, it allows the user to see all this information immediately in the main window. Finally, with just one click SENB can save an image of the main window as evidence. The SENB software is didactic and versatile, and can be used to improve and facilitate the teaching and learning of the underlying mechanisms in the electrical activity of an axon using the biophysical properties of the squid giant axon.

  9. Simreg: a Software Including Some New Developments in Multiple Comparison and Simultaneous Confidence Bands for Linear Regression Models

    Directory of Open Access Journals (Sweden)

    Mortaza Jamshidian

    2005-01-01

    Full Text Available The problem of simultaneous inference and multiple comparison for comparing means of k( ≥ 3 populations has been long studied in the statistics literature and is widely available in statistics literature. However to-date, the problem of multiple comparison of regression models has not found its way to the software. It is only recently that the computational aspects of this problem have been resolved in a general setting. SimReg employs this new methodology and provides users with software for multiple regression of several regression models. The comparisons can be among any set of pairs, and moreover any number of predictors can be included in the model. More importantly predictors can be constrained to their natural boundaries, if known. Computational methods for the problem of simultaneous confidence bands when predictors are constrained to intervals has also recently been addressed. SimReg utilizes this recent development to offer simultaneous confidence bands for regression models with any number of predictor variables. Again, the predictors can be constrained to their natural boundaries which results in narrower bands, as compared to the case where no restriction is imposed. A by-product of these confidence bands is a new method for comparing two regression surfaces, that is more informative than the usual partial F test.

  10. The Ragnarok Architectural Software Configuration Management Model

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak

    1999-01-01

    . This introduces an unfortunate impedance mismatch between the design domain (architecture level) and configuration management domain (file level.) This paper presents a software configuration management model that allows tight version control and configuration management of the architecture of a software system......The architecture is the fundamental framework for designing and implementing large scale software, and the ability to trace and control its evolution is essential. However, many traditional software configuration management tools view 'software' merely as a set of files, not as an architecture....... Essential features of the model have been implemented in a research prototype, Ragnarok. Two years of experience using Ragnarok in three, real, small- to medium sized, projects is reported. The conclusion is that the presented model is viable, feels 'natural' for developers, and provides good support...

  11. Software Development: Agile vs. Traditional

    Directory of Open Access Journals (Sweden)

    Marian STOICA

    2013-01-01

    Full Text Available Organizations face the need to adapt themselves to a complex business environment, in continuous change and transformation. Under these circumstances, organization agility is a key element in gaining strategic advantages and market success. Achieving and maintaining agility requires agile architectures, techniques, methods and tools, able to react in real time to change requirements. This paper proposes an incursion in the software development, from traditional to agile.

  12. Management of Software Development Projects

    Directory of Open Access Journals (Sweden)

    Felician ALECU

    2011-04-01

    Full Text Available Any major software development starts with the Initiating process group. Once the charter document is approved, the Planning and then to the Executing stages will follow. Monitoring and Controlling is measuring the potential performance deviation of the project in terms of schedule and costs and performs the related Integrated Change Control activities. At the end, during the Closing, the program/project manager will check the entire work is completed and the objectives are met.

  13. Management of Software Development Projects

    OpenAIRE

    Felician ALECU

    2011-01-01

    Any major software development starts with the Initiating process group. Once the charter document is approved, the Planning and then to the Executing stages will follow. Monitoring and Controlling is measuring the potential performance deviation of the project in terms of schedule and costs and performs the related Integrated Change Control activities. At the end, during the Closing, the program/project manager will check the entire work is completed and the objectives are met.

  14. A multiple node software development environment

    Energy Technology Data Exchange (ETDEWEB)

    Heinicke, P.; Nicinski, T.; Constanta-Fanourakis, P.; Petravick, D.; Pordes, R.; Ritchie, D.; White, V.

    1987-06-01

    Experimenters on over 30 DECnet nodes at Fermilab use software developed, distributed, and maintained by the Data Acquisition Software Group. A general methodology and set of tools have been developed to distribute, use and manage the software on different sites. The methodology and tools are of interest to any group developing and using software on multiple nodes.

  15. Software Development as Music Education Research

    Science.gov (United States)

    Brown, Andrew R.

    2007-01-01

    This paper discusses how software development can be used as a method for music education research. It explains how software development can externalize ideas, stimulate action and reflection, and provide evidence to support the educative value of new software-based experiences. Parallels between the interactive software development process and…

  16. Theory, Modeling, Software and Hardware Development for Analytical and Computational Materials Science

    Science.gov (United States)

    Young, Gerald W.; Clemons, Curtis B.

    2004-01-01

    The focus of this Cooperative Agreement between the Computational Materials Laboratory (CML) of the Processing Science and Technology Branch of the NASA Glenn Research Center (GRC) and the Department of Theoretical and Applied Mathematics at The University of Akron was in the areas of system development of the CML workstation environment, modeling of microgravity and earth-based material processing systems, and joint activities in laboratory projects. These efforts complement each other as the majority of the modeling work involves numerical computations to support laboratory investigations. Coordination and interaction between the modelers, system analysts, and laboratory personnel are essential toward providing the most effective simulations and communication of the simulation results. Toward these means, The University of Akron personnel involved in the agreement worked at the Applied Mathematics Research Laboratory (AMRL) in the Department of Theoretical and Applied Mathematics while maintaining a close relationship with the personnel of the Computational Materials Laboratory at GRC. Network communication between both sites has been established. A summary of the projects we undertook during the time period 9/1/03 - 6/30/04 is included.

  17. Customer Interaction in Software Development: A Comparison of Software Methodologies Deployed in Namibian Software Firms

    CSIR Research Space (South Africa)

    Iyawa, GE

    2016-01-01

    Full Text Available that customer interaction is not the only factor that influences a successful project; teamwork among software developers also plays a role. Hence, Moe et al. (2010) examined teamwork among developers in a Scrum project, using Dickson and Mcintyre’s teamwork...://www.mccormickpcs.com/ images/Waterfall_vs_Agile_Methodology.pdf Moe, N. B., Dingsøyr, T & Dybå, T. (2010) A Teamwork Model for Understanding an Agile Team: A Case Study of a Scrum Project. Information and Software Technology, 52, 480-491. Mohammadi, S., Nikkhahan, B...

  18. Status of the phenomena representation, 3D modeling, and cloud-based software architecture development

    Energy Technology Data Exchange (ETDEWEB)

    Smith, Curtis L. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Prescott, Steven [Idaho National Lab. (INL), Idaho Falls, ID (United States); Kvarfordt, Kellie [Idaho National Lab. (INL), Idaho Falls, ID (United States); Sampath, Ram [Idaho National Lab. (INL), Idaho Falls, ID (United States); Larson, Katie [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2015-09-01

    Early in 2013, researchers at the Idaho National Laboratory outlined a technical framework to support the implementation of state-of-the-art probabilistic risk assessment to predict the safety performance of advanced small modular reactors. From that vision of the advanced framework for risk analysis, specific tasks have been underway in order to implement the framework. This report discusses the current development of a several tasks related to the framework implementation, including a discussion of a 3D physics engine that represents the motion of objects (including collision and debris modeling), cloud-based analysis tools such as a Bayesian-inference engine, and scenario simulations. These tasks were performed during 2015 as part of the technical work associated with the Advanced Reactor Technologies Program.

  19. A simplified model of software project dynamics

    OpenAIRE

    Ruiz Carreira, Mercedes; Ramos Román, Isabel; Toro Bonilla, Miguel

    2001-01-01

    The simulation of a dynamic model for software development projects (hereinafter SDPs) helps to investigate the impact of a technological change, of different management policies, and of maturity level of organisations over the whole project. In the beginning of the 1990s, with the appearance of the dynamic model for SDPs by Abdel-Hamid and Madnick [Software Project Dynamics: An Integrated Approach, Prentice-Hall, Englewood Cliffs, NJ, 1991], a significant advance took place in the field of p...

  20. Automating Risk Analysis of Software Design Models

    Directory of Open Access Journals (Sweden)

    Maxime Frydman

    2014-01-01

    Full Text Available The growth of the internet and networked systems has exposed software to an increased amount of security threats. One of the responses from software developers to these threats is the introduction of security activities in the software development lifecycle. This paper describes an approach to reduce the need for costly human expertise to perform risk analysis in software, which is common in secure development methodologies, by automating threat modeling. Reducing the dependency on security experts aims at reducing the cost of secure development by allowing non-security-aware developers to apply secure development with little to no additional cost, making secure development more accessible. To automate threat modeling two data structures are introduced, identification trees and mitigation trees, to identify threats in software designs and advise mitigation techniques, while taking into account specification requirements and cost concerns. These are the components of our model for automated threat modeling, AutSEC. We validated AutSEC by implementing it in a tool based on data flow diagrams, from the Microsoft security development methodology, and applying it to VOMS, a grid middleware component, to evaluate our model's performance.

  1. Applying reliability models to the maintenance of Space Shuttle software

    Science.gov (United States)

    Schneidewind, Norman F.

    1992-01-01

    Software reliability models provide the software manager with a powerful tool for predicting, controlling, and assessing the reliability of software during maintenance. We show how a reliability model can be effectively employed for reliability prediction and the development of maintenance strategies using the Space Shuttle Primary Avionics Software Subsystem as an example.

  2. Modeling Software Processes and Artifacts

    NARCIS (Netherlands)

    van den Berg, Klaas; Bosch, Jan; Mitchell, Stuart

    1997-01-01

    The workshop on Modeling Software Processes and Artifacts explored the application of object technology in process modeling. After the introduction and the invited lecture, a number of participants presented their position papers. First, an overview is given on some background work, and the aims, as

  3. Crisis management for software development and knowledge transfer

    CERN Document Server

    Zykov, Sergey V

    2016-01-01

    This well structured book discusses lifecycle optimization of software projects for crisis management by means of software engineering methods and tools. Its outcomes are based on lessons learned from the software engineering crisis which started in the 1960s. The book presents a systematic approach to overcome the crisis in software engineering depends which not only depends on technology-related but also on human-related factors. It proposes an adaptive methodology for software product development, which optimizes the software product lifecycle in order to avoid “local” crises of software production. The general lifecycle pattern and its stages are discussed, and their impact on the time and budget of the software product development is analyzed. The book identifies key advantages and disadvantages for various models selected and concludes that there is no “silver bullet”, or universal model, which suits all software products equally well. It approaches software architecture in terms of process, dat...

  4. Designing Project Management for Global Software Development

    DEFF Research Database (Denmark)

    Tjørnehøj, Gitte; B. Balogh, Maria; Iversen, Cathrine

    2014-01-01

    Software development in distributed teams remains challenging despite rapid technical improvement in tools for communication and collaboration across distance. The challenges stem from geographical, temporal and sociocultural distance and manifest themselves in a variety of difficulties...... in the development projects. This study has identified a range of difficulties described in the literature of global software development, lacking sufficient solutions. In particular, advice for project managers is lacking. Design science research has been applied to design a model to guide project managers...... of distributed software teams, based on a practice study and informed by well-known theories. Our work pinpoints the difficulties of handling the vital informal processes in distributed collaboration that are so vulnerable because the distances risk detaining their growth and increasing their decay rate...

  5. Stimulating Creativity Through Opportunistic Software Development

    NARCIS (Netherlands)

    Obrenovic, Z.; Gasevic, D.; Eliëns, A.

    2008-01-01

    Using opportunistic software development principles in computer engineering education encourages students to be creative and to develop solutions that cross the boundaries of diverse technologies. A framework for opportunistic software development education helps to create a space in which students

  6. Accelerator Operators and Software Development

    Energy Technology Data Exchange (ETDEWEB)

    April Miller; Michele Joyce

    2001-11-01

    At Thomas Jefferson National Accelerator Facility, accelerator operators perform tasks in their areas of specialization in addition to their machine operations duties. One crucial area in which operators contribute is software development. Operators with programming skills are uniquely qualified to develop certain controls applications because of their expertise in the day-to-day operation of the accelerator. Jefferson Lab is one of the few laboratories that utilizes the skills and knowledge of operators to create software that enhances machine operations. Through the programs written; by operators, Jefferson Lab has improved machine efficiency and beam availability. Because many of these applications involve automation of procedures and need graphical user interfaces, the scripting language Tcl and the Tk toolkit have been adopted. In addition to automation, some operator-developed applications are used for information distribution. For this purpose, several standard web development tools such as perl, VBScript, and ASP are used. Examples of applications written by operators include injector steering, spin angle changes, system status reports, magnet cycling routines, and quantum efficiency measurements. This paper summarizes how the unique knowledge of accelerator operators has contributed to the success of the Jefferson Lab control system. *This work was supported by the U.S. DOE contract No. DE-AC05-84-ER40150.

  7. The last developments of the airGR R-package, an open source software for rainfall-runoff modelling

    Science.gov (United States)

    Thirel, Guillaume; Delaigue, Olivier; Coron, Laurent; Perrin, Charles; Andréassian, Vazken

    2017-04-01

    Lumped hydrological models are useful and convenient tools for research, engineering and educational purposes. They propose catchment-scale representations of the precipitation-discharge relationship. Thanks to their limited data requirements, they can be easily implemented and run. With such models, it is possible to simulate a number of hydrological key processes over the catchment with limited structural and parametric complexity, typically evapotranspiration, runoff, underground losses, etc. The Hydrology Group at Irstea (Antony) has been developing a suite of rainfall-runoff models over the past 30 years with the main objectives of designing models as efficient as possible in terms of streamflow simulation, applicable to a wide range of catchments and having low data requirements. This resulted in a suite of models running at different time steps (from hourly to annual) applicable for various issues including water balance estimation, forecasting, simulation of impacts and scenario testing. Recently, Irstea has developed an easy-to-use R-package (R Core Team, 2016), called airGR (Coron et al., 2016, 2017), to make these models widely available. It includes: - the water balance annual GR1A model, - the monthly GR2M model, - three versions of the daily model, namely GR4J, GR5J and GR6J, - the hourly GR4H model, - a degree-day snow model CemaNeige. The airGR package has been designed to facilitate the use by non-expert users and allow the addition of evaluation criteria, models or calibration algorithm selected by the end-user. Each model core is coded in FORTRAN to ensure low computational time. The other package functions (i.e. mainly the calibration algorithm and the efficiency criteria) are coded in R. The package is also used for educational purposes. It allows for convenient implementation of model inter-comparisons and large sample hydrology experiments. The airGR package undergoes continuous developments for improving the efficiency, computational time

  8. Rapid Application Development Using Software Factories

    CERN Document Server

    Stojanovski, Toni

    2012-01-01

    Software development is still based on manufactory production, and most of the programming code is still hand-crafted. Software development is very far away from the ultimate goal of industrialization in software production, something which has been achieved long time ago in the other industries. The lack of software industrialization creates an inability to cope with fast and frequent changes in user requirements, and causes cost and time inefficiencies during their implementation. Analogous to what other industries had done long time ago, industrialization of software development has been proposed using the concept of software factories. We have accepted this vision about software factories, and developed our own software factory which produces three-layered ASP.NET web applications. In this paper we report about our experience with using this approach in the process of software development, and present comparative results on performances and deliverables in both traditional development and development usin...

  9. TOGAF usage in outsourcing of software development

    Directory of Open Access Journals (Sweden)

    Aziz Ahmad Rais

    2013-12-01

    Full Text Available TOGAF is an Enterprise Architecture framework that provides a method for developing Enterprise Architecture called architecture development method (ADM. The purpose of this paper is whether TOGAF ADM can be used for developing software application architecture. Because the software application architecture is one of the disciplines in application development life cycle, it is important to find out how the enterprise architecture development method can support the application architecture development. Having an open standard that can be used in the application architecture development could help in outsourcing of software development. If ADM could be used for software application architecture development, then we could consider its usability in outsourcing of software development.

  10. Management models in the NZ software industry

    Directory of Open Access Journals (Sweden)

    Holger Spill

    Full Text Available This research interviewed eight innovative New Zealand software companies to find out how they manage new product development. It looked at how management used standard techniques of software development to manage product uncertainty through the theoretical lens of the Cyclic Innovation Model. The study found that while there is considerable variation, the management of innovation was largely determined by the level of complexity. Organizations with complex innovative software products had a more iterative software development style, more flexible internal processes and swifter decision-making. Organizations with less complexity in their products tended to use more formal structured approaches. Overall complexity could be inferred with reference to four key factors within the development environment.

  11. THE EPA MULTIMEDIA INTEGRATED MODELING SYSTEM SOFTWARE SUITE

    Science.gov (United States)

    The U.S. EPA is developing a Multimedia Integrated Modeling System (MIMS) framework that will provide a software infrastructure or environment to support constructing, composing, executing, and evaluating complex modeling studies. The framework will include (1) common software ...

  12. Software Validation via Model Animation

    Science.gov (United States)

    Dutle, Aaron M.; Munoz, Cesar A.; Narkawicz, Anthony J.; Butler, Ricky W.

    2015-01-01

    This paper explores a new approach to validating software implementations that have been produced from formally-verified algorithms. Although visual inspection gives some confidence that the implementations faithfully reflect the formal models, it does not provide complete assurance that the software is correct. The proposed approach, which is based on animation of formal specifications, compares the outputs computed by the software implementations on a given suite of input values to the outputs computed by the formal models on the same inputs, and determines if they are equal up to a given tolerance. The approach is illustrated on a prototype air traffic management system that computes simple kinematic trajectories for aircraft. Proofs for the mathematical models of the system's algorithms are carried out in the Prototype Verification System (PVS). The animation tool PVSio is used to evaluate the formal models on a set of randomly generated test cases. Output values computed by PVSio are compared against output values computed by the actual software. This comparison improves the assurance that the translation from formal models to code is faithful and that, for example, floating point errors do not greatly affect correctness and safety properties.

  13. Model-integrating software components engineering flexible software systems

    CERN Document Server

    Derakhshanmanesh, Mahdi

    2015-01-01

    In his study, Mahdi Derakhshanmanesh builds on the state of the art in modeling by proposing to integrate models into running software on the component-level without translating them to code. Such so-called model-integrating software exploits all advantages of models: models implicitly support a good separation of concerns, they are self-documenting and thus improve understandability and maintainability and in contrast to model-driven approaches there is no synchronization problem anymore between the models and the code generated from them. Using model-integrating components, software will be

  14. Teamwork in Distributed Agile Software Development

    OpenAIRE

    Gurram, Chaitanya; Bandi, Srinivas Goud

    2013-01-01

    Context: Distributed software development has become a most desired way of software development. Application of agile development methodologies in distributed environments has taken a new trend in developing software due to its benefits of improved communication and collaboration. Teamwork is an important concept that agile methodologies facilitate and is one of the potential determinants of team performance which was not focused in distributed agile software development. Objectives: This res...

  15. Teamwork in Distributed Agile Software Development

    OpenAIRE

    Gurram, Chaitanya; Bandi, Srinivas Goud

    2013-01-01

    Context: Distributed software development has become a most desired way of software development. Application of agile development methodologies in distributed environments has taken a new trend in developing software due to its benefits of improved communication and collaboration. Teamwork is an important concept that agile methodologies facilitate and is one of the potential determinants of team performance which was not focused in distributed agile software development. Objectives: This res...

  16. ENACTED SOFTWARE DEVELOPMENT PROCESS BASED ON AGILE AND AGENT METHODOLOGIES

    OpenAIRE

    DR. NACHAMAI. M; M. Senthil Vadivu; VINITA TAPASKAR

    2011-01-01

    Software Engineering gives the procedures and practices to be followed in the software development and acts as a backbone for computer science engineering techniques. This paper deals with current trends in software engineering methodologies, Agile and Agent Oriented software development process. Agile Methodology is to meet the needs of dynamic changing requirements of the customers. This model is iterative and incremental and accepts the changes in requirements at any stage of development. ...

  17. Managing Risk Areas in Software Development Offshoring

    DEFF Research Database (Denmark)

    Persson, John Stouby; Schlichter, Bjarne Rerup

    2015-01-01

    Software companies are increasingly offshoring development to countries with high expertise at lower cost. Offshoring involves particular risk areas that if ignored increase the likelihood of failure. However, the offshoring client’s maturity level may influence the management of these risk areas....... Against this backdrop, we present an interpretive case study of how managers perceive and mitigate the risk areas in software development offshoring with a mature CMMI level 5 (Capability Maturity Model, Integrated) software company as the client. We find that managers perceive and mitigate most...... of the offshoring risk areas in accordance with the findings of previous research. However, the risk area of task distribution is a notable exception. In this case, managers perceive high task uncertainty, equivocality, and coupling across sites as risk mitigation rather than risk taking. The paper discusses how...

  18. Automating Object-Oriented Software Development Methods

    NARCIS (Netherlands)

    Tekinerdogan, Bedir; Saeki, Motoshi; Sunyé, Gerson; Broek, van den Pim; Hruby, Pavel

    2001-01-01

    Current software projects have generally to deal with producing and managing large and complex software products. It is generally believed that applying software development methods are useful in coping with this complexity and for supporting quality. As such numerous object-oriented software devel

  19. Automating Object-Oriented Software Development Methods

    NARCIS (Netherlands)

    Tekinerdogan, Bedir; Saeki, Motoshi; Sunyé, Gerson; Broek, van den Pim; Hruby, Pavel; Frohner, A´ kos

    2002-01-01

    Current software projects have generally to deal with producing and managing large and complex software products. It is generally believed that applying software development methods are useful in coping with this complexity and for supporting quality. As such numerous object-oriented software develo

  20. Automating Object-Oriented Software Development Methods

    NARCIS (Netherlands)

    Tekinerdogan, B.; Saeki, Motoshi; Sunyé, Gerson; van den Broek, P.M.; Hruby, Pavel; Tekinerdogan, B.; van den Broek, P.M.; Saeki, M.; Hruby, P.; Sunye, G.

    2001-01-01

    Current software projects have generally to deal with producing and managing large and complex software products. It is generally believed that applying software development methods are useful in coping with this complexity and for supporting quality. As such numerous object-oriented software

  1. Crowdsourcing cloud-based software development

    CERN Document Server

    Li, Wei; Tsai, Wei-Tek; Wu, Wenjun

    2015-01-01

    This book presents the latest research on the software crowdsourcing approach to develop large and complex software in a cloud-based platform. It develops the fundamental principles, management organization and processes, and a cloud-based infrastructure to support this new software development approach. The book examines a variety of issues in software crowdsourcing processes, including software quality, costs, diversity of solutions, and the competitive nature of crowdsourcing processes. Furthermore, the book outlines a research roadmap of this emerging field, including all the key technology and management issues for the foreseeable future. Crowdsourcing, as demonstrated by Wikipedia and Facebook for online web applications, has shown promising results for a variety of applications, including healthcare, business, gold mining exploration, education, and software development. Software crowdsourcing is emerging as a promising solution to designing, developing and maintaining software. Preliminary software cr...

  2. Coupling Modelling of Urban Development and Flood Risk – An Attempt for a Combined Software Framework

    DEFF Research Database (Denmark)

    Löwe, Roland; Sto Domingo, Nina; Urich, Christian;

    2015-01-01

    to use the results of the hydraulic simulation to condition DANCE4WATER and to account for flood risk in the simulated urban development. In an Australian case study, we demonstrate that future flood risk can be significantly reduced while maintaining the overall speed of urban development....

  3. Development and Use of Mathematical Models and Software Frameworks for Integrated Analysis of Agricultural Systems and Associated Water Use Impacts

    Directory of Open Access Journals (Sweden)

    J.C. Chrispell

    2016-05-01

    Full Text Available The development of appropriate water management strategies requires, in part, a methodology for quantifying and evaluating the impact of water policy decisions on regional stakeholders. In this work, we describe the framework we are developing to enhance the body of resources available to policy makers, farmers, and other community members in their e orts to understand, quantify, and assess the often competing objectives water consumers have with respect to usage. The foundation for the framework is the construction of a simulation-based optimization software tool using two existing software packages. In particular, we couple a robust optimization software suite (DAKOTA with the USGS MF-OWHM water management simulation tool to provide a flexible software environment that will enable the evaluation of one or multiple (possibly competing user-defined (or stakeholder objectives. We introduce the individual software components and outline the communication strategy we defined for the coupled development. We present numerical results for case studies related to crop portfolio management with several defined objectives. The objectives are not optimally satisfied for any single user class, demonstrating the capability of the software tool to aid in the evaluation of a variety of competing interests.

  4. Development and use of mathematical models and software frameworks for integrated analysis of agricultural systems and associated water use impacts

    Science.gov (United States)

    Fowler, K. R.; Jenkins, E.W.; Parno, M.; Chrispell, J.C.; Colón, A. I.; Hanson, Randall T.

    2016-01-01

    The development of appropriate water management strategies requires, in part, a methodology for quantifying and evaluating the impact of water policy decisions on regional stakeholders. In this work, we describe the framework we are developing to enhance the body of resources available to policy makers, farmers, and other community members in their e orts to understand, quantify, and assess the often competing objectives water consumers have with respect to usage. The foundation for the framework is the construction of a simulation-based optimization software tool using two existing software packages. In particular, we couple a robust optimization software suite (DAKOTA) with the USGS MF-OWHM water management simulation tool to provide a flexible software environment that will enable the evaluation of one or multiple (possibly competing) user-defined (or stakeholder) objectives. We introduce the individual software components and outline the communication strategy we defined for the coupled development. We present numerical results for case studies related to crop portfolio management with several defined objectives. The objectives are not optimally satisfied for any single user class, demonstrating the capability of the software tool to aid in the evaluation of a variety of competing interests.

  5. Multi-Agent Based Agile (XP) Software Development Process Scheduling Model

    National Research Council Canada - National Science Library

    Y M Malgwi; N V Blamah

    2015-01-01

    .... In such changing environment agile development methodology is suited. In this paper, a multi-agent based approach to process scheduling was adopted, where each activity is viewed as an autonomous and flexible agent process...

  6. Formal, Model-oriented Software Development Methods - From VDM to ProCoS & from RAISE to LaCoS

    DEFF Research Database (Denmark)

    Bjørner, Dines; Haxthausen, Anne Elisabeth; Havelund, K.

    1991-01-01

    the technical/scientific essence of the VDM and RAISE methods, and explain the ProCos and LaCoS project structures. The paper will first outline five central roles of software developers: problem domain specialists, programmers, software engineers, resident computation scientists and managers. We will briefly......The first author has been invited to reminisce over almost 20 years of his research into and application of formal methods in software development. The paper deals with model-oriented methods. The title of this paper mentions two methods: VDM (Vienna Development Method) and RAISE (Rigorous Approach...... illustrate examples of specifications in VDM and RAISE. The aim of the paper is to record that formal methods in software development are now well-developed and broadly accepted in Europe....

  7. Integration of Simulink Models with Component-based Software Models

    DEFF Research Database (Denmark)

    Marian, Nicolae

    2008-01-01

    constructs and process flow, then software code is generated. A Simulink model is a representation of the design or implementation of a physical system that satisfies a set of requirements. A software component-based system aims to organize system architecture and behaviour as a means of computation...... constraints. COMDES (Component-based Design of Software for Distributed Embedded Systems) is such a component-based system framework developed by the software engineering group of Mads Clausen Institute for Product Innovation (MCI), University of Southern Denmark. Once specified, the software model has......Model based development aims to facilitate the development of embedded control systems by emphasizing the separation of the design level from the implementation level. Model based design involves the use of multiple models that represent different views of a system, having different semantics...

  8. Behavior models for software architecture

    OpenAIRE

    Auguston, Mikhail

    2014-01-01

    Approved for public release; distribution is unlimited. Approved for public release; distribution is unlimited Monterey Phoenix (MP) is an approach to formal software system architecture specification based on behavior models. Architecture modeling focuses not only on the activities and interactions within the system, but also on the interactions between the system and its environment, providing an abstraction for interaction specification. The behavior of the system is defined as a set...

  9. YAM- A Framework for Rapid Software Development

    Science.gov (United States)

    Jain, Abhinandan; Biesiadecki, Jeffrey

    2006-01-01

    YAM is a software development framework with tools for facilitating the rapid development and integration of software in a concurrent software development environment. YAM provides solutions for thorny development challenges associated with software reuse, managing multiple software configurations, the development of software product-lines, multiple platform development and build management. YAM uses release-early, release-often development cycles to allow developers to incrementally integrate their changes into the system on a continual basis. YAM facilitates the creation and merging of branches to support the isolated development of immature software to avoid impacting the stability of the development effort. YAM uses modules and packages to organize and share software across multiple software products. It uses the concepts of link and work modules to reduce sandbox setup times even when the code-base is large. One side-benefit is the enforcement of a strong module-level encapsulation of a module s functionality and interface. This increases design transparency, system stability as well as software reuse. YAM is in use by several mid-size software development teams including ones developing mission-critical software.

  10. Application of agile methodologies in software development

    Directory of Open Access Journals (Sweden)

    Jovanović Aca D.

    2016-01-01

    Full Text Available The paper presents the potentials for the development of software using agile methodologies. Special consideration is devoted to the potentials and advantages of use of the Scrum methodology in the development of software and the relationship between the implementation of agile methodologies and the software development projects.

  11. Graphical modelling software in R - status

    DEFF Research Database (Denmark)

    Dethlefsen, Claus; Højsgaard, Søren; Lauritzen, Steffen L.

    Graphical models in their modern form have been around for nearly a quarter of a century.  Various computer programs for inference in graphical models have been developed over that period. Some examples of free software programs are BUGS (Thomas 1994), CoCo (Badsberg2001), Digram (Klein, Keiding...

  12. Using Numerical Models in the Development of Software Tools for Risk Management of Accidents with Oil and Inert Spills

    Science.gov (United States)

    Fernandes, R.; Leitão, P. C.; Braunschweig, F.; Lourenço, F.; Galvão, P.; Neves, R.

    2012-04-01

    substances, helping in the management of the crisis, in the distribution of response resources, or prioritizing specific areas. They can also be used for detection of pollution sources. However, the resources involved, and the scientific and technological levels needed in the manipulation of numerical models, had both limited the interoperability between operational models, monitoring tools and decision-support software tools. The increasing predictive capacity of metocean conditions and fate and behaviour of pollutants spilt at sea or costal zones, and the presence of monitoring tools like vessel traffic control systems, can both provide a safer support for decision-making in emergency or planning issues associated to pollution risk management, especially if used in an integrated way. Following this approach, and taking advantage of an integrated framework developed in ARCOPOL (www.arcopol.eu) and EASYCO (www.project-easy.info) projects, three innovative model-supported software tools were developed and applied in the Atlantic Area, and / or the Portuguese Coast. Two of these tools are used for spill model simulations - a web-based interface (EASYCO web bidirectional tool) and an advanced desktop application (MOHID Desktop Spill Simulator) - both of them allowing end user to have control over the model simulations. Parameters such as date and time of the event, location and oil spill volume are provided the users; these interactive tools also integrate best available metocean forecasts (waves, meteorological, hydrodynamics) from different institutions in the Atlantic Area. Metocean data are continuously gathered from remote THREDDS data servers (using OPENDAP) or ftp sites, and then automatically interpolated and pre-processed to be available for the simulators. These simulation tools developed can also import initial data and export results from/to remote servers, using OGC WFS services. Simulations are provided to end user in a matter of seconds, and thus, can be very

  13. Development of Multi-Scale Modeling Software for Entangled Soft Matter in Advanced Soldier Protection

    Science.gov (United States)

    2011-12-06

    entanglement theory to cross-linked systems 2.1.1 Bidisperse blends of linear polymers 2.1.2 Cross-linked polymer rheology predictions A progressive...Research Laboratory (ARL) has been developing cross-linked polymer gels as candidate materials to mimic human tissue. Such a mimetic is necessary to...including semi-flexibility) as input to the structure. In order to apply this theory to the problem at hand—predicting the rheology of cross- linked

  14. Software Architecture Viewpoint Models: A Short Survey

    Directory of Open Access Journals (Sweden)

    Seyyed Ali Razavi Ebrahimi

    2013-11-01

    Full Text Available A software architecture is a complex entity that cannot be described in a simple one-dimensional fashion. The architecture views used to describe software provide the architect with a means of explaining the architecture to stakeholders. Each view presents different aspects of the system that fulfill functional and non-functional requirements. A view of a system is a representation of the system from the perspective of a viewpoint. Architecture viewpoints in software products provide guidelines to describe uniformly the total system and its subsystems. It defines the stakeholders whose concerns are reflected in the viewpoint and the guidelines, principles, and template models for constructing its views. The results of this study may serve as a roadmap to the software developers and architects in helping them select the appropriate viewpoint model based on the stakeholders and concerns that need to be covered by views.

  15. DEVELOPMENT OF FRASTA SIMULATION SOFTWARE

    Institute of Scientific and Technical Information of China (English)

    Y.G. Cao; K. Tanaka

    2006-01-01

    Fracture-surface topography analysis ( FRASTA ) was successfully used to simulate the process of crack and calculate parameters of crack such as the crack opening angle (COA) and crack-tip opening angle (CTOA). But because the amount of calculation is large, errors are often made during the course of calculation. FRASTA simulation software, namely fracture surface analyst (FSA) is developed and a series of center-cracked tension (CCT) and double edge notched (DEN)specimens of different materials with different sizes are tested, their fracture surfaces are scanned by non-contact 3D scanning system and the elevation data of the fracture surfaces is recorded.FSA used the recorded elevation data of fracture surfaces to simulate the process of crack based on the principle of FRASTA. Results show that FSA can accurately simulate the process and calculate the parameters of crack.

  16. Software Reuse Success Strategy Model: An Empirical Study of Factors Involved in the Success of Software Reuse in Information System Development

    Science.gov (United States)

    Tran, Kiet T.

    2012-01-01

    This study examined the relationship between information technology (IT) governance and software reuse success. Software reuse has been mostly an IT problem but rarely a business one. Studies in software reuse are abundant; however, to date, none has a deep appreciation of IT governance. This study demonstrated that IT governance had a positive…

  17. Software Reuse Success Strategy Model: An Empirical Study of Factors Involved in the Success of Software Reuse in Information System Development

    Science.gov (United States)

    Tran, Kiet T.

    2012-01-01

    This study examined the relationship between information technology (IT) governance and software reuse success. Software reuse has been mostly an IT problem but rarely a business one. Studies in software reuse are abundant; however, to date, none has a deep appreciation of IT governance. This study demonstrated that IT governance had a positive…

  18. Advanced software development workstation project: Engineering scripting language. Graphical editor

    Science.gov (United States)

    1992-01-01

    Software development is widely considered to be a bottleneck in the development of complex systems, both in terms of development and in terms of maintenance of deployed systems. Cost of software development and maintenance can also be very high. One approach to reducing costs and relieving this bottleneck is increasing the reuse of software designs and software components. A method for achieving such reuse is a software parts composition system. Such a system consists of a language for modeling software parts and their interfaces, a catalog of existing parts, an editor for combining parts, and a code generator that takes a specification and generates code for that application in the target language. The Advanced Software Development Workstation is intended to be an expert system shell designed to provide the capabilities of a software part composition system.

  19. Software Development Cost Estimation Methods

    Directory of Open Access Journals (Sweden)

    Bogdan Stepien

    2003-01-01

    Full Text Available Early estimation of project size and completion time is essential for successful project planning and tracking. Multiple methods have been proposed to estimate software size and cost parameters. Suitability of the estimation methods depends on many factors like software application domain, product complexity, availability of historical data, team expertise etc. Most common and widely used estimation techniques are described and analyzed. Current research trends in software estimation cost are also presented.

  20. Learning Human Aspects of Collaborative Software Development

    Science.gov (United States)

    Hadar, Irit; Sherman, Sofia; Hazzan, Orit

    2008-01-01

    Collaboration has become increasingly widespread in the software industry as systems have become larger and more complex, adding human complexity to the technological complexity already involved in developing software systems. To deal with this complexity, human-centric software development methods, such as Extreme Programming and other agile…

  1. Architectural viewpoints for global software development

    NARCIS (Netherlands)

    Yildiz, Bugra Mehmet; Tekinerdogan, B.

    Global Software Development (GSD) can be considered as the coordinated activity of software development that is not localized and central but geographically distributed. Designing an appropriate software architecture of a GSD system is important to meet the requirements for the communication,

  2. Learning Human Aspects of Collaborative Software Development

    Science.gov (United States)

    Hadar, Irit; Sherman, Sofia; Hazzan, Orit

    2008-01-01

    Collaboration has become increasingly widespread in the software industry as systems have become larger and more complex, adding human complexity to the technological complexity already involved in developing software systems. To deal with this complexity, human-centric software development methods, such as Extreme Programming and other agile…

  3. 基于“众包”的软件开发模式%Software Development Model Based on Crowdsourcing

    Institute of Scientific and Technical Information of China (English)

    李勇军; 缑西梅

    2014-01-01

    With the rapid development of Internet technology, Crowdsourcing becomes a flexible and effective solution. Although it has been widely used in many fields, the application in the field of software development still exists many problems, such as lack of unified standard and development methods, no mature application platform, etc. Aiming at these problems, this paper puts forward a software development platform and a software development method, which can provide a train of thought and reference for the use of crowdsourcing software development to a certain extent.%随着 Internet 技术的快速发展,“众包”成为一种灵活有效的解决问题方式。虽已在很多领域中得到广泛的应用,但在软件开发领域的应用仍存在很多问题,如缺乏统一标准及开发方法,没有成熟的应用平台等。针对此问题,本文提出一个基于“众包”的软件开发平台及“众包”软件开发方法,一定程度上为利用“众包”进行软件开发提供了一种思路和借鉴。

  4. Development of associations and kinetic models for microbiological data to be used in comprehensive food safety prediction software.

    Science.gov (United States)

    Halder, Amit; Black, D Glenn; Davidson, P Michael; Datta, Ashim

    2010-08-01

    The objective of this study was to use an existing database of food products and their associated processes, link it with a list of the foodborne pathogenic microorganisms associated with those products and finally identify growth and inactivation kinetic parameters associated with those pathogens. The database was to be used as a part of the development of comprehensive software which could predict food safety and quality for any food product. The main issues in building such a predictive system included selection of predictive models, associations of different food types with pathogens (as determined from outbreak histories), and variability in data from different experiments. More than 1000 data sets from published literature were analyzed and grouped according to microorganisms and food types. Final grouping of data consisted of the 8 most prevalent pathogens for 14 different food groups, covering all of the foods (>7000) listed in the USDA Natl. Nutrient Database. Data for each group were analyzed in terms of 1st-order inactivation, 1st-order growth, and sigmoidal growth models, and their kinetic response for growth and inactivation as a function of temperature were reported. Means and 95% confidence intervals were calculated for prediction equations. The primary advantage in obtaining group-specific kinetic data is the ability to extend microbiological growth and death simulation to a large array of product and process possibilities, while still being reasonably accurate. Such simulation capability could provide vital ''what if'' scenarios for industry, Extension, and academia in food safety.

  5. Strategies for successful software development risk management

    Directory of Open Access Journals (Sweden)

    Marija Boban

    2003-01-01

    Full Text Available Nowadays, software is becoming a major part of enterprise business. Software development is activity connected with advanced technology and high level of knowledge. Risks on software development projects must be successfully mitigated to produce successful software systems. Lack of a defined approach to risk management is one of the common causes for project failures. To improve project chances for success, this work investigates common risk impact areas to perceive a foundation that can be used to define a common approach to software risk management. Based on typical risk impact areas on software development projects, we propose three risk management strategies suitable for a broad area of enterprises and software development projects with different amounts of connected risks. Proposed strategies define activities that should be performed for successful risk management, the one that will enable software development projects to perceive risks as soon as possible and to solve problems connected with risk materialization. We also propose a risk-based approach to software development planning and risk management as attempts to address and retire the highest impact risks as early as possible in the development process. Proposed strategies should improve risk management on software development projects and help create a successful software solution.

  6. A Comparison Between Five Models Of Software Engineering

    Directory of Open Access Journals (Sweden)

    Nabil Mohammed Ali Munassar

    2010-09-01

    Full Text Available This research deals with a vital and important issue in computer world. It is concerned with the software management processes that examine the area of software development through the development models, which are known as software development life cycle. It represents five of the development models namely, waterfall, Iteration, V-shaped, spiral and Extreme programming. These models have advantages and disadvantages as well. Therefore, the main objective of this research is to represent different models of software development and make a comparison between them to show the features and defects of each model.

  7. Business Patterns for Software Developers

    CERN Document Server

    Kelly, Allan

    2012-01-01

    A must-have recipe book for building software Perhaps you can relate to this all-too common scenario: you know all about your software product?but could do with some help in understanding the strategic side of things. If so, this book is the one-stop resource you'll need in order to become a successful software entrepreneur. Patterns expert Allan Kelly provides you with the step-by-step route that needs to be followed in order to understand business strategy and operations. Each chapter starts out with a solid introduction and theoretical overview, which is then further illustrated with patter

  8. Development of Software Engineering: A Research Perspective

    Institute of Scientific and Technical Information of China (English)

    Hong Mei; Dong-Gang Cao; Fu-Qing Yang

    2006-01-01

    In the past 40 years, software engineering has emerged as an important sub-field of computer science and has made significant contribution to the software industry. Now it is gradually becoming a new independent discipline. This paper presents a survey of software engineering development from a research perspective. Firstly, the history of software engineering is reviewed with focus on the driving forces of software technology, the software engineering framework and the milestones of software engineering development. Secondly, after reviewing the past academic efforts, the current research activities are surveyed and new challenges brought by Internet are analyzed. Software engineering researches and activities in China are also reviewed. The work in Peking University is described as a representative.

  9. Effective Software Engineering Leadership for Development Programs

    Science.gov (United States)

    Cagle West, Marsha

    2010-01-01

    Software is a critical component of systems ranging from simple consumer appliances to complex health, nuclear, and flight control systems. The development of quality, reliable, and effective software solutions requires the incorporation of effective software engineering processes and leadership. Processes, approaches, and methodologies for…

  10. Effective Software Engineering Leadership for Development Programs

    Science.gov (United States)

    Cagle West, Marsha

    2010-01-01

    Software is a critical component of systems ranging from simple consumer appliances to complex health, nuclear, and flight control systems. The development of quality, reliable, and effective software solutions requires the incorporation of effective software engineering processes and leadership. Processes, approaches, and methodologies for…

  11. Teaching Agile Software Development: A Case Study

    Science.gov (United States)

    Devedzic, V.; Milenkovic, S. R.

    2011-01-01

    This paper describes the authors' experience of teaching agile software development to students of computer science, software engineering, and other related disciplines, and comments on the implications of this and the lessons learned. It is based on the authors' eight years of experience in teaching agile software methodologies to various groups…

  12. Teaching Agile Software Development: A Case Study

    Science.gov (United States)

    Devedzic, V.; Milenkovic, S. R.

    2011-01-01

    This paper describes the authors' experience of teaching agile software development to students of computer science, software engineering, and other related disciplines, and comments on the implications of this and the lessons learned. It is based on the authors' eight years of experience in teaching agile software methodologies to various groups…

  13. DEVELOPING SOFTWARE FOR CORPUS RESEARCH

    Directory of Open Access Journals (Sweden)

    Oliver Mason

    2008-06-01

    Full Text Available Despite the central role of the computer in corpus research, programming is generally not seen as a core skill within corpus linguistics. As a consequence, limitations in software for text and corpus analysis slow down the progress of research while analysts often have to rely on third party software or even manual data analysis if no suitable software is available. Apart from software itself, data formats are also of great importance for text processing. But again, many practitioners are not very aware of the options available to them, and thus idiosyncratic text formats often make sharing of resources difficult if not impossible. This article discusses some issues relating to both data and processing which should aid researchers to become more aware of the choices available to them when it comes to using computers in linguistic research. It also describes an easy way towards automating some common text processing tasks that can easily be acquired without knowledge of actual computer programming.

  14. USER STORY SOFTWARE ESTIMATION:A SIMPLIFICATION OF SOFTWARE ESTIMATION MODEL WITH DISTRIBUTED EXTREME PROGRAMMING ESTIMATION TECHNIQUE

    OpenAIRE

    Ridi Ferdiana; Paulus Insap Santoso; Lukito Edi Nugroho; Ahmad Ashari

    2011-01-01

    Software estimation is an area of software engineering concerned with the identification, classification and measurement of features of software that affect the cost of developing and sustaining computer programs [19]. Measuring the software through software estimation has purpose to know the complexity of the software, estimate the human resources, and get better visibility of execution and process model. There is a lot of software estimation that work sufficiently in certain conditions or s...

  15. Application development using the ALMA common software

    Science.gov (United States)

    Chiozzi, G.; Caproni, A.; Jeram, B.; Sommer, H.; Wang, V.; Plesko, M.; Sekoranja, M.; Zagar, K.; Fugate, D. W.; Harrington, S.; Di Marcantonio, P.; Cirami, R.

    2006-06-01

    The ALMA Common Software (ACS) provides the software infrastructure used by ALMA and by several other telescope projects, thanks also to the choice of adopting the LGPL public license. ACS is a set of application frameworks providing the basic services needed for object oriented distributed computing. Among these are transparent remote object invocation, object deployment and location based on a container/component model, distributed error, alarm handling, logging and events. ACS is based on CORBA and built on top of free CORBA implementations. Free software is extensively used wherever possible. The general architecture of ACS was presented at SPIE 2002. ACS has been under development for 6 years and it is midway through its development life. Many applications have been written using ACS; the ALMA test facility, APEX and other telescopes are running systems based on ACS. This is therefore a good time to look back and see what have been until now the strong and the weak points of ACS in terms of architecture and implementation. In this perspective, it is very important to analyze the applications based on ACS, the feedback received by the users and the impact that this feedback has had on the development of ACS itself, by favoring the development of some features with respect to others. The purpose of this paper is to describe the results of this analysis and discuss what we would like to do in order to extend and improve ACS in the coming years, in particular to make application development easier and more efficient.

  16. Software Engineering Tools for Scientific Models

    Science.gov (United States)

    Abrams, Marc; Saboo, Pallabi; Sonsini, Mike

    2013-01-01

    Software tools were constructed to address issues the NASA Fortran development community faces, and they were tested on real models currently in use at NASA. These proof-of-concept tools address the High-End Computing Program and the Modeling, Analysis, and Prediction Program. Two examples are the NASA Goddard Earth Observing System Model, Version 5 (GEOS-5) atmospheric model in Cell Fortran on the Cell Broadband Engine, and the Goddard Institute for Space Studies (GISS) coupled atmosphere- ocean model called ModelE, written in fixed format Fortran.

  17. Insights into software development in Japan

    Science.gov (United States)

    Duvall, Lorraine M.

    1992-01-01

    The interdependence of the U.S.-Japanese economies makes it imperative that we in the United States understand how business and technology developments take place in Japan. We can gain insight into these developments in software engineering by studying the context in which Japanese software is developed, the practices that are used, the problems encountered, the setting surrounding these problems, and the resolution of these problems. Context includes the technological and sociological characteristics of the software development environment, the software processes applied, personnel involved in the development process, and the corporate and social culture surrounding the development. Presented in this paper is a summary of results of a study that addresses these issues. Data for this study was collected during a three month visit to Japan where the author interviewed 20 software managers representing nine companies involved in developing software in Japan. These data are compared to similar data from the United States in which 12 managers from five companies were interviewed.

  18. Designing Project Management for Global Software Development

    DEFF Research Database (Denmark)

    Tjørnehøj, Gitte; B. Balogh, Maria; Iversen, Cathrine

    2014-01-01

    of distributed software teams, based on a practice study and informed by well-known theories. Our work pinpoints the difficulties of handling the vital informal processes in distributed collaboration that are so vulnerable because the distances risk detaining their growth and increasing their decay rate....... The research suggest to support and securing these informal processes through explicit and formal means and to ensure management’s continuous focus on this effort to succeed....... in the development projects. This study has identified a range of difficulties described in the literature of global software development, lacking sufficient solutions. In particular, advice for project managers is lacking. Design science research has been applied to design a model to guide project managers...

  19. Design for software a playbook for developers

    CERN Document Server

    Klimczak, Erik

    2013-01-01

    A unique resource to help software developers create a desirable user experience Today, top-flight software must feature a desirable user experience. This one-of-a-kind book creates a design process specifically for software, making it easy for developers who lack design background to create that compelling user experience. Appealing to both tech-savvy designers and creative-minded technologists, it establishes a hybrid discipline that will produce first-rate software. Illustrated in full color, it shows how to plan and visualize the design to create software that works on every l

  20. Traceability for Model Driven, Software Product Line Engineering

    NARCIS (Netherlands)

    Anquetil, N.; Grammel, B.; Galvao Lourenco da Silva, I.; Noppen, J.A.R.; Shakil Khan, S.; Arboleda, H.; Rashid, A.; Garcia, A.

    2008-01-01

    Traceability is an important challenge for software organizations. This is true for traditional software development and even more so in new approaches that introduce more variety of artefacts such as Model Driven development or Software Product Lines. In this paper we look at some aspect of the int

  1. Developing a Generic Risk Assessment Simulation Modelling Software Tool for Assessing the Risk of Foot and Mouth Virus Introduction.

    Science.gov (United States)

    Tameru, B; Gebremadhin, B; Habtemariam, T; Nganwa, D; Ayanwale, O; Wilson, S; Robnett, V; Wilson, W

    2008-06-01

    Foot and Mouth disease (FMD) is a highly contagious viral disease that affects all cloven-hoofed animals. Because of its devastating effects on the agricultural industry, many countries take measures to stop the introduction of FMD virus into their countries. Decision makers at multiple levels of the United States Department of Agriculture (USDA) use Risk Assessments (RAs) (both quantitative and qualitative) to make better and more informed scientifically based decisions to prevent the accidental or intentional introduction of the disease. There is a need for a generic RA that can be applied to any country (whether FMD free or non-FMD free) and for any product (FMD infected animals and animal products). We developed a user-friendly generic RA tool (software) that can be used to conduct and examine different scenarios of quantitative/qualitative risk assessments for the different countries with their varying FMD statuses in relation to reintroduction of FMD virus into the USA. The program was written in Microsoft Visual Basic 6.0 (Microsoft Corporation, Redmond, Washington, USA). The @Risk 6.1 Developer Kit (RDK) and @Risk 6.1 Best Fit Kit library (Palisade Corporation, Newfield, NY.USA) was used to build Monte Carlo simulation models. Microsoft Access 2000 (Microsoft Corporation, Redmond, Washington, USA) was used and SQL to query the data. Different input probability distributions can be selected for the nodes in the scenario tree and different output for each end-state of the simulation is given in different graphical formats and statistical values are used in describing the likelihood of FMD virus introduction. Sensitivity Analysis in determining which input factor has more effect on the total risk outputs is also given. The developed generic RA tools can be eventually extended and modified to conduct RAs for other animal diseases and animal products.

  2. Software Engineering Laboratory (SEL) cleanroom process model

    Science.gov (United States)

    Green, Scott; Basili, Victor; Godfrey, Sally; Mcgarry, Frank; Pajerski, Rose; Waligora, Sharon

    1991-01-01

    The Software Engineering Laboratory (SEL) cleanroom process model is described. The term 'cleanroom' originates in the integrated circuit (IC) production process, where IC's are assembled in dust free 'clean rooms' to prevent the destructive effects of dust. When applying the clean room methodology to the development of software systems, the primary focus is on software defect prevention rather than defect removal. The model is based on data and analysis from previous cleanroom efforts within the SEL and is tailored to serve as a guideline in applying the methodology to future production software efforts. The phases that are part of the process model life cycle from the delivery of requirements to the start of acceptance testing are described. For each defined phase, a set of specific activities is discussed, and the appropriate data flow is described. Pertinent managerial issues, key similarities and differences between the SEL's cleanroom process model and the standard development approach used on SEL projects, and significant lessons learned from prior cleanroom projects are presented. It is intended that the process model described here will be further tailored as additional SEL cleanroom projects are analyzed.

  3. Hierarchy-Based Team Software Process Simulation Model

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    According to the characteristic of Team Software Process (TSP), it adopts a hierarchy-based model combined discrete event model with system dynamics model. This model represents TSP as form of two levels, the inner level embodies the continuity of the software process, the outer embodies the software development process by phases, and the structure and principle of the model is explained in detail, then formalization description of the model is offered. At last, an example is presented to demonstrate the simulation process and result. This model can simulate team software process from various angles, supervise and predict the software process. Also it can make the management of software development become more scientific and improve the quality of software.

  4. Novel Software Reliability Estimation Model for Altering Paradigms of Software Engineering

    Directory of Open Access Journals (Sweden)

    Ritika Wason

    2012-05-01

    Full Text Available A number of different software engineering paradigms like Component-Based Software Engineering (CBSE, Autonomic Computing, Service-Oriented Computing (SOC, Fault-Tolerant Computing and many others are being researched currently. These paradigms denote a paradigm shift from the currently mainstream object-oriented paradigm and are altering the way we view, design, develop and exercise software. Though these paradigms indicate a major shift in the way we design and code software. However, we still rely on traditional reliability models for estimating the reliability of any of the above systems. This paper analyzes the underlying characteristics of these paradigms and proposes a novel Finite Automata Based Reliability model as a suitable model for estimating reliability of modern, complex, distributed and critical software applications. We further outline the basic framework for an intelligent, automata-based reliability model that can be used for accurate estimation of system reliability of software systems at any point in the software life cycle.

  5. Manager's handbook for software development, revision 1

    Science.gov (United States)

    1990-01-01

    Methods and aids for the management of software development projects are presented. The recommendations are based on analyses and experiences of the Software Engineering Laboratory (SEL) with flight dynamics software development. The management aspects of the following subjects are described: organizing the project, producing a development plan, estimating costs, scheduling, staffing, preparing deliverable documents, using management tools, monitoring the project, conducting reviews, auditing, testing, and certifying.

  6. Recommended approach to software development, revision 3

    Science.gov (United States)

    Landis, Linda; Waligora, Sharon; Mcgarry, Frank; Pajerski, Rose; Stark, Mike; Johnson, Kevin Orlin; Cover, Donna

    1992-01-01

    Guidelines for an organized, disciplined approach to software development that is based on studies conducted by the Software Engineering Laboratory (SEL) since 1976 are presented. It describes methods and practices for each phase of a software development life cycle that starts with requirements definition and ends with acceptance testing. For each defined life cycle phase, guidelines for the development process and its management, and for the products produced and their reviews are presented.

  7. TMT approach to observatory software development process

    Science.gov (United States)

    Buur, Hanne; Subramaniam, Annapurni; Gillies, Kim; Dumas, Christophe; Bhatia, Ravinder

    2016-07-01

    The purpose of the Observatory Software System (OSW) is to integrate all software and hardware components of the Thirty Meter Telescope (TMT) to enable observations and data capture; thus it is a complex software system that is defined by four principal software subsystems: Common Software (CSW), Executive Software (ESW), Data Management System (DMS) and Science Operations Support System (SOSS), all of which have interdependencies with the observatory control systems and data acquisition systems. Therefore, the software development process and plan must consider dependencies to other subsystems, manage architecture, interfaces and design, manage software scope and complexity, and standardize and optimize use of resources and tools. Additionally, the TMT Observatory Software will largely be developed in India through TMT's workshare relationship with the India TMT Coordination Centre (ITCC) and use of Indian software industry vendors, which adds complexity and challenges to the software development process, communication and coordination of activities and priorities as well as measuring performance and managing quality and risk. The software project management challenge for the TMT OSW is thus a multi-faceted technical, managerial, communications and interpersonal relations challenge. The approach TMT is using to manage this multifaceted challenge is a combination of establishing an effective geographically distributed software team (Integrated Product Team) with strong project management and technical leadership provided by the TMT Project Office (PO) and the ITCC partner to manage plans, process, performance, risk and quality, and to facilitate effective communications; establishing an effective cross-functional software management team composed of stakeholders, OSW leadership and ITCC leadership to manage dependencies and software release plans, technical complexities and change to approved interfaces, architecture, design and tool set, and to facilitate

  8. Artificial Intelligence Software Engineering (AISE) model

    Science.gov (United States)

    Kiss, Peter A.

    1990-01-01

    The American Institute of Aeronautics and Astronautics has initiated a committee on standards for Artificial Intelligence. Presented are the initial efforts of one of the working groups of that committee. A candidate model is presented for the development life cycle of knowledge based systems (KBSs). The intent is for the model to be used by the aerospace community and eventually be evolved into a standard. The model is rooted in the evolutionary model, borrows from the spiral model, and is embedded in the standard Waterfall model for software development. Its intent is to satisfy the development of both stand-alone and embedded KBSs. The phases of the life cycle are shown and detailed as are the review points that constitute the key milestones throughout the development process. The applicability and strengths of the model are discussed along with areas needing further development and refinement by the aerospace community.

  9. Artificial Intelligence Software Engineering (AISE) model

    Science.gov (United States)

    Kiss, Peter A.

    1990-01-01

    The American Institute of Aeronautics and Astronautics has initiated a committee on standards for Artificial Intelligence. Presented are the initial efforts of one of the working groups of that committee. A candidate model is presented for the development life cycle of knowledge based systems (KBSs). The intent is for the model to be used by the aerospace community and eventually be evolved into a standard. The model is rooted in the evolutionary model, borrows from the spiral model, and is embedded in the standard Waterfall model for software development. Its intent is to satisfy the development of both stand-alone and embedded KBSs. The phases of the life cycle are shown and detailed as are the review points that constitute the key milestones throughout the development process. The applicability and strengths of the model are discussed along with areas needing further development and refinement by the aerospace community.

  10. OUTSHORE Maturity Model: Assistance for Software Offshore Outsourcing Decisions

    Science.gov (United States)

    Mäkiö, Juho; Betz, Stafanie; Oberweis, Andreas

    Offshore outsourcing software development (OOSD) is increasingly being used by the Software Industry. OOSD is a specific variant of Geographically Distributed Software Developmentdistributed software development (GDSD). Compared to the traditional mode of software development (i.e., in-house) GDSD is more edgy and puts at risk the attainment of the expected results. Although the failure of an offshore outsourcing software project may be caused by a variety of factors, one major complication is geographical distance. Consequently we argue that risk avoidance in outshore software development should be undertaken well in advance of the development launch. This could be done by testing the offshore outsourcing relevance of each software project and then the offshore outsourcing company involved. With this in mind we have developed the OUTSHORE Maturity Modeloutshore maturity model - OMM.

  11. Development of a New VLBI Data Analysis Software

    Science.gov (United States)

    Bolotin, Sergei; Gipson, John M.; MacMillan, Daniel S.

    2010-01-01

    We present an overview of a new VLBI analysis software under development at NASA GSFC. The new software will replace CALC/SOLVE and many related utility programs. It will have the capabilities of the current system as well as incorporate new models and data analysis techniques. In this paper we give a conceptual overview of the new software. We formulate the main goals of the software. The software should be flexible and modular to implement models and estimation techniques that currently exist or will appear in future. On the other hand it should be reliable and possess production quality for processing standard VLBI sessions. Also, it needs to be capable of processing observations from a fully deployed network of VLBI2010 stations in a reasonable time. We describe the software development process and outline the software architecture.

  12. HPC Institutional Computing Project: W15_lesreactiveflow KIVA-hpFE Development: A Robust and Accurate Engine Modeling Software

    Energy Technology Data Exchange (ETDEWEB)

    Carrington, David Bradley [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Waters, Jiajia [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-01-05

    KIVA-hpFE is a high performance computer software for solving the physics of multi-species and multiphase turbulent reactive flow in complex geometries having immersed moving parts. The code is written in Fortran 90/95 and can be used on any computer platform with any popular complier. The code is in two versions, a serial version and a parallel version utilizing MPICH2 type Message Passing Interface (MPI or Intel MPI) for solving distributed domains. The parallel version is at least 30x faster than the serial version and much faster than our previous generation of parallel engine modeling software, by many factors. The 5th generation algorithm construction is a Galerkin type Finite Element Method (FEM) solving conservative momentum, species, and energy transport equations along with two-equation turbulent model k-ω Reynolds Averaged Navier-Stokes (RANS) model and a Vreman type dynamic Large Eddy Simulation (LES) method. The LES method is capable modeling transitional flow from laminar to fully turbulent; therefore, this LES method does not require special hybrid or blending to walls. The FEM projection method also uses a Petrov-Galerkin (P-G) stabilization along with pressure stabilization. We employ hierarchical basis sets, constructed on the fly with enrichment in areas associated with relatively larger error as determined by error estimation methods. In addition, when not using the hp-adaptive module, the code employs Lagrangian basis or shape functions. The shape functions are constructed for hexahedral, prismatic and tetrahedral elements. The software is designed to solve many types of reactive flow problems, from burners to internal combustion engines and turbines. In addition, the formulation allows for direct integration of solid bodies (conjugate heat transfer), as in heat transfer through housings, parts, cylinders. It can also easily be extended to stress modeling of solids, used in fluid structure interactions problems, solidification, porous media

  13. SAPHIRE models and software for ASP evaluations

    Energy Technology Data Exchange (ETDEWEB)

    Sattison, M.B.; Schroeder, J.A.; Russell, K.D. [Idaho National Engineering Lab., Idaho Falls, ID (United States)] [and others

    1995-04-01

    The Idaho National Engineering Laboratory (INEL) over the past year has created 75 plant-specific Accident Sequence Precursor (ASP) models using the SAPHIRE suite of PRA codes. Along with the new models, the INEL has also developed a new module for SAPHIRE which is tailored specifically to the unique needs of conditional core damage probability (CCDP) evaluations. These models and software will be the next generation of risk tools for the evaluation of accident precursors by both NRR and AEOD. This paper presents an overview of the models and software. Key characteristics include: (1) classification of the plant models according to plant response with a unique set of event trees for each plant class, (2) plant-specific fault trees using supercomponents, (3) generation and retention of all system and sequence cutsets, (4) full flexibility in modifying logic, regenerating cutsets, and requantifying results, and (5) user interface for streamlined evaluation of ASP events.

  14. Development and evaluation of a digital dental modeling method based on grating projection and reverse engineering software.

    Science.gov (United States)

    Zhou, Qin; Wang, Zhenzhen; Chen, Jun; Song, Jun; Chen, Lu; Lu, Yi

    2016-01-01

    For reasons of convenience and economy, attempts have been made to transform traditional dental gypsum casts into 3-dimensional (3D) digital casts. Different scanning devices have been developed to generate digital casts; however, each has its own limitations and disadvantages. The purpose of this study was to develop an advanced method for the 3D reproduction of dental casts by using a high-speed grating projection system and noncontact reverse engineering (RE) software and to evaluate the accuracy of the method. The methods consisted of 3 main steps: the scanning and acquisition of 3D dental cast data with a high-resolution grating projection system, the reconstruction and measurement of digital casts with RE software, and the evaluation of the accuracy of this method using 20 dental gypsum casts. The common anatomic landmarks were measured directly on the gypsum casts with a Vernier caliper and on the 3D digital casts with the Geomagic software measurement tool. Data were statistically assessed with the t test. The grating projection system had a rapid scanning speed, and smooth 3D dental casts were obtained. The mean differences between the gypsum and 3D measurements were approximately 0.05 mm, and no statistically significant differences were found between the 2 methods (P>.05), except for the measurements of the incisor tooth width and maxillary arch length. A method for the 3D reconstruction of dental casts was developed by using a grating projection system and RE software. The accuracy of the casts generated using the grating projection system was comparable with that of the gypsum casts. Copyright © 2016 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.

  15. Generalizing Agile Software Development Life Cycle

    Directory of Open Access Journals (Sweden)

    S. Bhalerao

    2009-11-01

    Full Text Available In last decade, various agile methods have been introduced and used by software industry. It has been observed that many practitioners are using hybrid of agile methods and traditional methods. The knowledge of agile software development process about the theoretical grounds, applicability in large development settings and connections to establish software engineering disciplines remain mostly in dark. It has been reported that it is difficult for average manager to implement agile method in the organization. Further, every agile method has its own development cycle that brings technological, managerial and environmental changes in organization. A proper roadmap of agile software development in the form of agile software development life cycle can be developed to address the aforesaid issues of agile software development process. Thus, there is strong need of agile software development life cycle that clearly defines the phases included in any agile method and also describes the artifacts of each phase. This generalization of agile software development life cycle provides the guideline for average developers about usability, suitability, applicability of agile methods.

  16. Integration of Simulink Models with Component-based Software Models

    DEFF Research Database (Denmark)

    Marian, Nicolae; Top, Søren

    2008-01-01

    of abstract system descriptions. Usually, in mechatronics systems, design proceeds by iterating model construction, model analysis, and model transformation. Constructing a MATLAB/Simulink model, a plant and controller behavior is simulated using graphical blocks to represent mathematical and logical...... of MATLAB/Simulink blocks to COMDES software components, both for continuous and discrete behaviour, and the transformation of the software system into the S-functions. The general aim of this work is the improvement of multi-disciplinary development of embedded systems with the focus on the relation...... constructs and process flow, then software code is generated. A Simulink model is a representation of the design or implementation of a physical system that satisfies a set of requirements. A software component-based system aims to organize system architecture and behaviour as a means of computation...

  17. Assessing quality in software development: An agile methodology approach

    OpenAIRE

    V. Rodríguez-Hernández; M.C. Espino-Gudiño; J.L. González-Pérez; J. Gudiño-Bazaldúa; Victor Castano

    2015-01-01

    A novel methodology, result of 10 years of in-field testing, which makes possible the convergence of different types of models and quality standards for Engineering and Computer Science Faculties, is presented. Since most software-developing companies are small and medium sized, the projects developed must focuson SCRUM and Extreme Programming (XP), opposed to a RUP, which is quite heavy, as well as on Personal Software Process (PSP) and Team Software Process (TSP), which provide students wit...

  18. Software Development Management: Empirical and Analytical Perspectives

    Science.gov (United States)

    Kang, Keumseok

    2011-01-01

    Managing software development is a very complex activity because it must deal with people, organizations, technologies, and business processes. My dissertation consists of three studies that examine software development management from various perspectives. The first study empirically investigates the impacts of prior experience with similar…

  19. XP in a Small Software Development Business

    DEFF Research Database (Denmark)

    Babb, Jeffry; Hoda, Rashina; Nørbjerg, Jacob

    2014-01-01

    While small software development shops have trended towards the adoption of Agile methods, local conditions and high iteration pressure typically cause adaptations and appropriations of Agile methods. This paper shares evidence from a study concerning how a small software development company adopts...... most sustainable for small shop teams, with process maintenance and viability as a goal, are highlighted....

  20. Automating Software Development Process using Fuzzy Logic

    NARCIS (Netherlands)

    Marcelloni, Francesco; Aksit, Mehmet; Damiani, Ernesto; Jain, Lakhmi C.; Madravio, Mauro

    2004-01-01

    In this chapter, we aim to highlight how fuzzy logic can be a valid expressive tool to manage the software development process. We characterize a software development method in terms of two major components: artifact types and methodological rules. Classes, attributes, operations, and inheritance an

  1. XP in a Small Software Development Business

    DEFF Research Database (Denmark)

    Babb, Jeffry; Hoda, Rashina; Nørbjerg, Jacob

    2014-01-01

    While small software development shops have trended towards the adoption of Agile methods, local conditions and high iteration pressure typically cause adaptations and appropriations of Agile methods. This paper shares evidence from a study concerning how a small software development company adopts...

  2. Software Development Management: Empirical and Analytical Perspectives

    Science.gov (United States)

    Kang, Keumseok

    2011-01-01

    Managing software development is a very complex activity because it must deal with people, organizations, technologies, and business processes. My dissertation consists of three studies that examine software development management from various perspectives. The first study empirically investigates the impacts of prior experience with similar…

  3. Workflow-Based Software Development Environment

    Science.gov (United States)

    Izygon, Michel E.

    2013-01-01

    The Software Developer's Assistant (SDA) helps software teams more efficiently and accurately conduct or execute software processes associated with NASA mission-critical software. SDA is a process enactment platform that guides software teams through project-specific standards, processes, and procedures. Software projects are decomposed into all of their required process steps or tasks, and each task is assigned to project personnel. SDA orchestrates the performance of work required to complete all process tasks in the correct sequence. The software then notifies team members when they may begin work on their assigned tasks and provides the tools, instructions, reference materials, and supportive artifacts that allow users to compliantly perform the work. A combination of technology components captures and enacts any software process use to support the software lifecycle. It creates an adaptive workflow environment that can be modified as needed. SDA achieves software process automation through a Business Process Management (BPM) approach to managing the software lifecycle for mission-critical projects. It contains five main parts: TieFlow (workflow engine), Business Rules (rules to alter process flow), Common Repository (storage for project artifacts, versions, history, schedules, etc.), SOA (interface to allow internal, GFE, or COTS tools integration), and the Web Portal Interface (collaborative web environment

  4. Firing Room Remote Application Software Development

    Science.gov (United States)

    Liu, Kan

    2015-01-01

    The Engineering and Technology Directorate (NE) at National Aeronautics and Space Administration (NASA) Kennedy Space Center (KSC) is designing a new command and control system for the checkout and launch of Space Launch System (SLS) and future rockets. The purposes of the semester long internship as a remote application software developer include the design, development, integration, and verification of the software and hardware in the firing rooms, in particular with the Mobile Launcher (ML) Launch Accessories (LACC) subsystem. In addition, a software test verification procedure document was created to verify and checkout LACC software for Launch Equipment Test Facility (LETF) testing.

  5. Model-driven and software product line engineering

    CERN Document Server

    Royer, Jean-Claude

    2013-01-01

    Many approaches to creating Software Product Lines have emerged that are based on Model-Driven Engineering. This book introduces both Software Product Lines and Model-Driven Engineering, which have separate success stories in industry, and focuses on the practical combination of them. It describes the challenges and benefits of merging these two software development trends and provides the reader with a novel approach and practical mechanisms to improve software development productivity.The book is aimed at engineers and students who wish to understand and apply software product lines

  6. XML-Intensive software development

    OpenAIRE

    Ibañez Anfurrutia, Felipe

    2016-01-01

    168 p. 1. IntroducciónXML es un lenguaje de meta-etiquetas, es decir, puede ser utilizado fundamentalmentepara crear lenguajes de etiquetas . La presencia de XML es unfenómeno generalizado. Sin embargo, su juventud hace que los desarrolladores seenfrentan a muchos desafíos al utilizar XML en aplicaciones de vanguardia. Estatesis enfrenta XML a tres escenarios diferentes: intercambio de documentos,Líneas de Producto Software (LPS) y Lenguajes eSpecíficos de Dominio (LSD).El intercambio digi...

  7. Usability in open source software development

    DEFF Research Database (Denmark)

    Andreasen, M. S.; Nielsen, H. V.; Schrøder, S. O.

    2006-01-01

    Open Source Software (OSS) development has gained significant importance in the production of soft-ware products. Open Source Software developers have produced systems with a functionality that is competitive with similar proprietary software developed by commercial software organizations. Yet OSS...... is usually designed for and by power-users, and OSS products have been criticized for having little or no emphasis on usability. We have conducted an empirical study of the developers’ opinions about usability and the way usability engineering is practiced in a variety of OSS projects. The study included...... a questionnaire survey and a series of interviews, where we interviewed OSS contributors with both technical and usability backgrounds. Overall we found that OSS developers are interested in usability, but in practice it is not top priority, and OSS projects rarely employs systematic usability evaluation. Most...

  8. Workflow Based Software Development Environment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The goal of this proposed research is to investigate and develop a workflow based tool, the Software Developers Assistant, to facilitate the collaboration between...

  9. Intrinsic Motivation in Open Source Software Development

    DEFF Research Database (Denmark)

    Bitzer, J.; W., Schrettl,; Schröder, Philipp

    2004-01-01

    of a public good, these features emerge quite naturally. We adapt a dynamic private-provision-of-public-goods model to reflects key aspects of the OSS phenomenon. In particular, instead of relying on extrinsic motives for programmers (e.g. signaling) the present model is driven by intrinsic motives of OSS...... programmers, such as user-programmers, play value or \\emph{homo ludens} payoff, and gift culture benefits. Such intrinsic motives feature extensively in the wider OSS literature and turn out to add new insights to the economic analysis.......This papers sheds light on the puzzling evidence that even though open source software (OSS) is a public good, it is developed for free by highly qualified, young and motivated individuals, and evolves at a rapid pace. We show that once OSS development is understood as the private provision...

  10. Distributed Agile Software Development: A Review

    CERN Document Server

    Shrivastava, Suprika Vasudeva

    2010-01-01

    Distribution of software development is becoming more and more common in order to save the production cost and reduce the time to market. Large geographical distance, different time zones and cultural differences in distributed software development (DSD) leads to weak communication which adversely affects the project. Using agile practices for distributed development is also gaining momentum in various organizations to increase the quality and performance of the project. This paper explores the intersection of these two significant trends for software development i.e. DSD and agile. We discuss the challenges faced by geographically distributed agile teams and proven practices to address these issues, which will help in building a successful distributed team.

  11. Software development an open source approach

    CERN Document Server

    Tucker, Allen; de Silva, Chamindra

    2011-01-01

    Overview and Motivation Software Free and Open Source Software (FOSS)Two Case Studies Working with a Project Team Key FOSS Activities Client-Oriented vs. Community-Oriented Projects Working on a Client-Oriented Project Joining a Community-Oriented Project Using Project Tools Collaboration Tools Code Management Tools Run-Time System ConstraintsSoftware Architecture Architectural Patterns Layers, Cohesion, and Coupling Security Concurrency, Race Conditions, and DeadlocksWorking with Code Bad Smells and Metrics Refactoring Testing Debugging Extending the Software for a New ProjectDeveloping the D

  12. Towards A Broader Adoption of Agile Software Development Methods

    Directory of Open Access Journals (Sweden)

    Abdallah Alashqur

    2016-12-01

    Full Text Available Traditionally, software design and development has been following the engineering approach as exemplified by the waterfall model, where specifications have to be fully detailed and agreed upon prior to starting the software construction process. Agile software development is a relatively new approach in which specifications are allowed to evolve even after the beginning of the development process, among other characteristics. Thus, agile methods provide more flexibility than the waterfall model, which is a very useful feature in many projects. To benefit from the advantages provided by agile methods, the adoption rate of these methods in software development projects can be further encouraged if certain practices and techniques in agile methods are improved. In this paper, an analysis is provided of several practices and techniques that are part of agile methods that may hinder their broader acceptance. Further, solutions are proposed to improve such practices and consequently facilitate a wider adoption rate of agile methods in software development.

  13. Management Guidelines for Database Developers' Teams in Software Development Projects

    Science.gov (United States)

    Rusu, Lazar; Lin, Yifeng; Hodosi, Georg

    Worldwide job market for database developers (DBDs) is continually increasing in last several years. In some companies, DBDs are organized as a special team (DBDs team) to support other projects and roles. As a new role, the DBDs team is facing a major problem that there are not any management guidelines for them. The team manager does not know which kinds of tasks should be assigned to this team and what practices should be used during DBDs work. Therefore in this paper we have developed a set of management guidelines, which includes 8 fundamental tasks and 17 practices from software development process, by using two methodologies Capability Maturity Model (CMM) and agile software development in particular Scrum in order to improve the DBDs team work. Moreover the management guidelines developed here has been complemented with practices from authors' experience in this area and has been evaluated in the case of a software company. The management guidelines for DBD teams presented in this paper could be very usefully for other companies too that are using a DBDs team and could contribute towards an increase of the efficiency of these teams in their work on software development projects.

  14. Analyzing, Modelling, and Designing Software Ecosystems

    DEFF Research Database (Denmark)

    Manikas, Konstantinos

    of software ecosystems. We use these contributions to design a software ecosystem in the telemedicine services of Denmark with (i) a common platform that supports and promotes development from different actors, (ii) high software interaction, (iii) strong social network of actors, (iv) robust business...... as the software development and distribution by a set of actors dependent on each other and the ecosystem. We commence on the hypothesis that the establishment of a software ecosystem on the telemedicine services of Denmark would address these issues and investigate how a software ecosystem can foster...... the development, implementation, and use of telemedicine services. We initially expand the theory of software ecosystems by contributing to the definition and understanding of software ecosystems, providing means of analyzing existing and designing new ecosystems, and defining and measuring the qualities...

  15. Aspect-Oriented Software Quality Model: The AOSQ Model

    Directory of Open Access Journals (Sweden)

    Pankaj Kumar

    2012-04-01

    Full Text Available Nowadays, software development has become more complex and dynamic; they are expected more flexible, scalable and reusable. Under the umbrella of aspect, Aspect-Oriented Software Development (AOSD is relatively a modern programming paradigm to improve modularity in software development. Using Aspect-Oriented Programming (AOP language to implements crosscutting concerns through the introduction of a new construct Aspect like Class is defined as a modular unit of crosscutting behavior that affect multiple classes into reusable modules. Several quality models to measure the quality of software are available in literature. However, keep on developing software, and acceptance of new environment (i.e. AOP under conditions that give rise to an issue of evolvability. After the evolution of system, we have to find out how the new system needs to be extensible? What is the configurable status? Is designed pattern stable for new environment and technology? How the new system is sustainable? The objective of this paper is to propose a new quality model for AOSD to integrating some new qualityattributes in AOSQUAMO Model based which is based on ISO/IEC 9126 Quality Model, is called AspectOriented Quality (AOSQ Model. Analytic Hierarchy Process (AHP is used to evaluate an improved hierarchical quality model for AOSD.

  16. Interactive Programming Support for Secure Software Development

    Science.gov (United States)

    Xie, Jing

    2012-01-01

    Software vulnerabilities originating from insecure code are one of the leading causes of security problems people face today. Unfortunately, many software developers have not been adequately trained in writing secure programs that are resistant from attacks violating program confidentiality, integrity, and availability, a style of programming…

  17. Assessment and Development of Software Engineering Tools

    Science.gov (United States)

    1991-01-16

    Assessment (REA) tool would advise a potential software reuser on the tradeoffs between reusing a RSC versus developing a brand new software product...of memberships in the key RSC reusability attributes; e.g., size, structure, or documentation, etc., all of which would be weighted by reuser

  18. Object-Oriented Software Development Environments

    DEFF Research Database (Denmark)

    Rasmussen, Anne Scharling; Berntsen, Dorthe

    1994-01-01

    The book "Object-Oriented Environments - The Mjølner Approach" presents the collective results of the Mjølner Project. The project was set up to work on the widely recognized problems of developing, maintaining and understanding large software systems. The starting point was to use object......-orientation in making advances in methods, languages and tools for this purpose. The environments combine object-orientations with tight integration and incremental techniques to realize highly interactive environments for strongly typed block structures languages. This book describes the developed techniques as well...... as the developed environments (the Mjølner Orm System, the Mjølner System and tools for O-O SDL). Features include: Object-Oriented modeling, concepts and OSDL Object-oriented programming languages: BETA and Simula Programming in the large: concepts, techniques and realizations Persistence: concepts, techniques...

  19. Software cost estimation, benchmarking, and risk assessment the software decision-makers' guide to predictable software development

    CERN Document Server

    Trendowicz, Adam

    2012-01-01

    Software effort estimation is a key element of software project planning and management. Yet, in industrial practice, the important role of effort estimation is often underestimated and/or misunderstood. In this book, Adam Trendowicz presents the CoBRA method (an abbreviation for Cost Estimation, Benchmarking, and Risk Assessment) for estimating the effort required to successfully complete a software development project, which uniquely combines human judgment and measurement data in order to systematically create a custom-specific effort estimation model. CoBRA goes far beyond simply predictin

  20. Explicit models for dynamic software

    NARCIS (Netherlands)

    Bosloper, Ivor; Siljee, Johanneke; Nijhuis, Jos; Nord, R; Medvidovic, N; Krikhaar, R; Khrhaar, R; Stafford, J; Bosch, J

    2006-01-01

    A key aspect in creating autonomous dynamic software systems is the possibility of reasoning about properties of runtime variability and dynamic behavior, e.g. when and how to reconfigure the system. Currently these properties are often not made explicit in the software architecture. We argue that

  1. Explicit models for dynamic software

    NARCIS (Netherlands)

    Bosloper, Ivor; Siljee, Johanneke; Nijhuis, Jos; Nord, R; Medvidovic, N; Krikhaar, R; Khrhaar, R; Stafford, J; Bosch, J

    2006-01-01

    A key aspect in creating autonomous dynamic software systems is the possibility of reasoning about properties of runtime variability and dynamic behavior, e.g. when and how to reconfigure the system. Currently these properties are often not made explicit in the software architecture. We argue that h

  2. Designing, developing, and implementing software ecosystems

    DEFF Research Database (Denmark)

    Manikas, Konstantinos; Hämäläinen, Mervi; Tyrväinen, Pasi

    2017-01-01

    The notion of software ecosystems has been popular both in research and industry for more than a decade, but how software ecosystems are created still remains unclear. This becomes more of a challenge if one examines the ``creation'' of ecosystems that have high probability in surviving...... in the future, i.e. with respect to ecosystem health. In this paper, we focus on the creation of software ecosystems and propose a process for designing, developing, and establishing software ecosystems based on three basic steps and a set of activities for each step. We note that software ecosystem research...... identifies that ecosystems typically emerge from either a company deciding to allow development on their product platform or from a successful open source project. In our study we add to this knowledge by demonstrating, through two case studies, that ecosystems can emerge from more than a technological...

  3. Designing, developing, and implementing software ecosystems

    DEFF Research Database (Denmark)

    Manikas, Konstantinos; Hämäläinen, Mervi; Tyrväinen, Pasi

    2017-01-01

    The notion of software ecosystems has been popular both in research and industry for more than a decade, but how software ecosystems are created still remains unclear. This becomes more of a challenge if one examines the "creation'' of ecosystems that have high probability in surviving...... in the future, i.e. with respect to ecosystem health. In this paper, we focus on the creation of software ecosystems and propose a process for designing, developing, and establishing software ecosystems based on three basic steps and a set of activities for each step. We note that software ecosystem research...... identifies that ecosystems typically emerge from either a company deciding to allow development on their product platform or from a successful open source project. In our study we add to this knowledge by demonstrating, through two case studies, that ecosystems can emerge from more than a technological...

  4. Factors Affecting the Choice of Software Life Cycle Models in the Software Industry-An Empirical Study

    OpenAIRE

    Vandana Bhattacherjee; M. S. Neogi; Rupa Mahanti

    2012-01-01

    Problem statement: The aim of this study was to present the results of the survey conducted with software professionals in a few Indian software companies. Approach: The study initially presents an overview of the common software life cycle models used in the software development. Results and Conclusion: The survey results revealed that the level of understanding of the user requirements is the most important fact in the choice of the life cycle model used in the software project. Project Com...

  5. Effective Development and Verification of Railway Control Software

    DEFF Research Database (Denmark)

    Haxthausen, Anne Elisabeth

    2011-01-01

    This document presents a method for effective development of software for a product line of similar railway control systems. The software is constructed in three steps: first a specifications in a domain-specific language is created, then a formal behavioural controller model is automatically...

  6. A systematic approach for component-based software development

    NARCIS (Netherlands)

    Guareis de farias, Cléver; van Sinderen, Marten J.; Ferreira Pires, Luis

    2000-01-01

    Component-based software development enables the construction of software artefacts by assembling prefabricated, configurable and independently evolving building blocks, called software components. This paper presents an approach for the development of component-based software artefacts. This

  7. A Machine Learning based Efficient Software Reusability Prediction Model for Java Based Object Oriented Software

    Directory of Open Access Journals (Sweden)

    Surbhi Maggo

    2014-01-01

    Full Text Available Software reuse refers to the development of new software systems with the likelihood of completely or partially using existing components or resources with or without modification. Reusability is the measure of the ease with which previously acquired concepts and objects can be used in new contexts. It is a promising strategy for improvements in software quality, productivity and maintainability as it provides for cost effective, reliable (with the consideration that prior testing and use has eliminated bugs and accelerated (reduced time to market development of the software products. In this paper we present an efficient automation model for the identification and evaluation of reusable software components to measure the reusability levels (high, medium or low of procedure oriented Java based (object oriented software systems. The presented model uses a metric framework for the functional analysis of the Object oriented software components that target essential attributes of reusability analysis also taking into consideration Maintainability Index to account for partial reuse. Further machine learning algorithm LMNN is explored to establish relationships between the functional attributes. The model works at functional level rather than at structural level. The system is implemented as a tool in Java and the performance of the automation tool developed is recorded using criteria like precision, recall, accuracy and error rate. The results gathered indicate that the model can be effectively used as an efficient, accurate, fast and economic model for the identification of procedure based reusable components from the existing inventory of software resources.

  8. Developing Software Product Lines for Science Data Systems (Invited)

    Science.gov (United States)

    Crichton, D. J.; Hughes, J. S.; Mattmann, C. A.; Law, E.; Hardman, S.

    2010-12-01

    Software reuse has traditionally been a challenging proposition. While the allure of reusing software has great appeal to increasing stability and reducing software costs, there has been limited success in building software that can be efficiently reused. In many cases, reuse is limited to the reuse of software expertise or repurposing existing software code. While there are certainly cultural challenges involved in reusing software, much of the challenge can be traced back to the strategy involved in developing reusable software. The discipline of software architecture plays an important role since software reuse is highly dependent on developing a reference architecture that can be used for the construction of software product lines. All too often software reference architectures are implicit or are highly focused on specific implementations. The challenge is developing a reference architecture that identifies core patterns that exist across many systems at appropriate level of abstraction and then developing a reference implementation that can serve as a reusable product line. At the Jet Propulsion Laboratory (JPL), we have been involved in developing both reference architectures and software product lines for science data systems [1]. These reference architectures identify common patterns in data capture, data processing and product generation, data discovery, data access and distribution, and data movement. How those patterns are implemented is critical to establishing a reusable architecture. In addition, the separation of the technical and data architecture has proven critical to allowing for such product lines to be applied to multiple disciplines, where domain information models are developed and applied, rather than directly integrated into software. This presentation will focus on defining software architecture and product lines, the development of these capabilities at JPL, and the application to earth, planetary and biomedical domains. [1] C. Mattmann

  9. Modeling software behavior a craftsman's approach

    CERN Document Server

    Jorgensen, Paul C

    2009-01-01

    A common problem with most texts on requirements specifications is that they emphasize structural models to the near exclusion of behavioral models-focusing on what the software is, rather than what it does. If they do cover behavioral models, the coverage is brief and usually focused on a single model. Modeling Software Behavior: A Craftsman's Approach provides detailed treatment of various models of software behavior that support early analysis, comprehension, and model-based testing. Based on the popular and continually evolving course on requirements specification models taught by the auth

  10. The Report of Virtual Exhibition Software Development

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The main structure and key techniques of our Vir tual ExhibitionSoftware are summarized. It demonstrates the practice of Softwa re Engineering during the development of our project and discusses the use of UML in it.

  11. Ragnarok: An Architecture Based Software Development Environment

    DEFF Research Database (Denmark)

    Christensen, Henrik Bærbak

    The Ragnarok project is an experimental computer science project within the field of software development environments. Taking current problems in software engineering as starting point, a small set of hypotheses are proposed, outlining plausible solutions for problems concerning the management...... of the development process and its associated data, and outlining how these solutions can be supported directly in a development environment. These hypotheses are all deeply rooted in the viewpoint that the logical software architecture forms a natural and powerful framework for handling essential aspects...... of the development process. The main contributions presented in the thesis have evolved from work with two of the hypotheses: These address the problems of management of evolution, and overview, comprehension and navigation respectively. The first main contribution is the Architectural Software Configuration...

  12. Software development on the SAP HANA platform

    CERN Document Server

    Walker, Mark

    2013-01-01

    Software Development on the SAP HANA Platform is a general tutorial guide to SAP HANA.This book is written for beginners to the SAP HANA platform. No knowledge of SAP HANA is necessary to start using this book.

  13. Small is beautiful: customer driven software development

    DEFF Research Database (Denmark)

    Hansen, Henrik A.B.; Koch, Christian; Pleman, Allan

    1999-01-01

    to develop their software. In small software houses operating in markets with complex products such as ERP (enterprise resource planning) systems, networking is necessary in order to gain the needed knowledge and resources in the production development process. Network is not seen as a magic word but leads...... to different benefits and short comings for the collaborative companies depending on the specific context. In this paper we discuss three types of networks: collaboration between users and producer(s), collaboration between a software house and third party suppliers, and a collaboration between academics...

  14. Concept Development for Software Health Management

    Science.gov (United States)

    Riecks, Jung; Storm, Walter; Hollingsworth, Mark

    2011-01-01

    This report documents the work performed by Lockheed Martin Aeronautics (LM Aero) under NASA contract NNL06AA08B, delivery order NNL07AB06T. The Concept Development for Software Health Management (CDSHM) program was a NASA funded effort sponsored by the Integrated Vehicle Health Management Project, one of the four pillars of the NASA Aviation Safety Program. The CD-SHM program focused on defining a structured approach to software health management (SHM) through the development of a comprehensive failure taxonomy that is used to characterize the fundamental failure modes of safety-critical software.

  15. Estimating Software-Development Costs With Greater Accuracy

    Science.gov (United States)

    Baker, Dan; Hihn, Jairus; Lum, Karen

    2008-01-01

    COCOMOST is a computer program for use in estimating software development costs. The goal in the development of COCOMOST was to increase estimation accuracy in three ways: (1) develop a set of sensitivity software tools that return not only estimates of costs but also the estimation error; (2) using the sensitivity software tools, precisely define the quantities of data needed to adequately tune cost estimation models; and (3) build a repository of software-cost-estimation information that NASA managers can retrieve to improve the estimates of costs of developing software for their project. COCOMOST implements a methodology, called '2cee', in which a unique combination of well-known pre-existing data-mining and software-development- effort-estimation techniques are used to increase the accuracy of estimates. COCOMOST utilizes multiple models to analyze historical data pertaining to software-development projects and performs an exhaustive data-mining search over the space of model parameters to improve the performances of effort-estimation models. Thus, it is possible to both calibrate and generate estimates at the same time. COCOMOST is written in the C language for execution in the UNIX operating system.

  16. Development of the Monte Carlo event generator tuning software package Lagrange and its application to tune the PYTHIA model to the LHCb data

    CERN Document Server

    Popov, Dmitry; Hofmann, Werner

    One of the general problems of modern high energy physics is a problem of comparing experimental data, measurements of observables in high energy collisions, to theory, which is represented by Monte Carlo simulations. This work is dedicated to further development of the tuning methodology and implementation of software tools for tuning of the PYTHIA Monte Carlo event generator for the LHCb experiment. The aim of this thesis is to create a fast analytical model of the Monte Carlo event generator and then fitting the model to the experimental data, recorded by the LHCb detector, considering statistical and computational uncertainties and estimating the best values for the tuned parameters, by simultaneous tuning of a group of phenomenological parameters in many-dimensional parameter-space. The fitting algorithm is interfaced to the LHCb software framework, which models the response of the LHCb detector. Typically, the tunings are done to the measurements which are corrected for detector effects. These correctio...

  17. Developing high-quality educational software.

    Science.gov (United States)

    Johnson, Lynn A; Schleyer, Titus K L

    2003-11-01

    The development of effective educational software requires a systematic process executed by a skilled development team. This article describes the core skills required of the development team members for the six phases of successful educational software development. During analysis, the foundation of product development is laid including defining the audience and program goals, determining hardware and software constraints, identifying content resources, and developing management tools. The design phase creates the specifications that describe the user interface, the sequence of events, and the details of the content to be displayed. During development, the pieces of the educational program are assembled. Graphics and other media are created, video and audio scripts written and recorded, the program code created, and support documentation produced. Extensive testing by the development team (alpha testing) and with students (beta testing) is conducted. Carefully planned implementation is most likely to result in a flawless delivery of the educational software and maintenance ensures up-to-date content and software. Due to the importance of the sixth phase, evaluation, we have written a companion article on it that follows this one. The development of a CD-ROM product is described including the development team, a detailed description of the development phases, and the lessons learned from the project.

  18. Using Game Development to Teach Software Architecture

    Directory of Open Access Journals (Sweden)

    Alf Inge Wang

    2011-01-01

    Full Text Available This paper describes a case study of how a game project using the XNA Game Studio from Microsoft was implemented in a software architecture course. In this project, university students have to construct and design a type of software architecture, evaluate the architecture, implement an application based on the architecture, and test this implementation. In previous years, the domain of the software architecture project has been a robot controller for navigating a maze. Robot controller was chosen as the domain for the project, as there exist several papers and descriptions on reference architectures for managing mobile robots. This paper describes the changes we had to make to introduce an XNA game development project to the software architecture course, and our experiences from running a software architecture project focusing on game development and XNA. The experiences described in this paper are based on feedback from the course staff, the project reports of the students, and a mandatory course evaluation. The evaluation shows among other things that the majority of the students preferred the game project to the robot project, that XNA was considered to be suitable platform for a software architecture project, that the students found it useful to learn XNA and C#, and that some students were carried away when developing the game in the software architecture project.

  19. An algebraic approach to modeling in software engineering

    Energy Technology Data Exchange (ETDEWEB)

    Loegel, G.J. [Superconducting Super Collider Lab., Dallas, TX (United States)]|[Michigan Univ., Ann Arbor, MI (United States); Ravishankar, C.V. [Michigan Univ., Ann Arbor, MI (United States)

    1993-09-01

    Our work couples the formalism of universal algebras with the engineering techniques of mathematical modeling to develop a new approach to the software engineering process. Our purpose in using this combination is twofold. First, abstract data types and their specification using universal algebras can be considered a common point between the practical requirements of software engineering and the formal specification of software systems. Second, mathematical modeling principles provide us with a means for effectively analyzing real-world systems. We first use modeling techniques to analyze a system and then represent the analysis using universal algebras. The rest of the software engineering process exploits properties of universal algebras that preserve the structure of our original model. This paper describes our software engineering process and our experience using it on both research and commercial systems. We need a new approach because current software engineering practices often deliver software that is difficult to develop and maintain. Formal software engineering approaches use universal algebras to describe ``computer science`` objects like abstract data types, but in practice software errors are often caused because ``real-world`` objects are improperly modeled. There is a large semantic gap between the customer`s objects and abstract data types. In contrast, mathematical modeling uses engineering techniques to construct valid models for real-world systems, but these models are often implemented in an ad hoc manner. A combination of the best features of both approaches would enable software engineering to formally specify and develop software systems that better model real systems. Software engineering, like mathematical modeling, should concern itself first and foremost with understanding a real system and its behavior under given circumstances, and then with expressing this knowledge in an executable form.

  20. Co-sourcing in software development offshoring

    DEFF Research Database (Denmark)

    Schlichter, Bjarne Rerup; Persson, John Stouby

    2013-01-01

    Software development projects are increasingly geographical distributed with offshoring, which introduce complex risks that can lead to project failure. Co-sourcing is a highly integrative and cohesive approach, seen successful, to software development offshoring. However, research of how co......-sourcing shapes the perception and alleviation of common offshoring risks is limited. We present a case study of how a certified CMMI-level 5 Danish software supplier approaches these risks in offshore co-sourcing. The paper explains how common offshoring risks are perceived and alleviated when adopting the co......-sourcing strategy in a mature (CMMI level 5) software development organization. We found that most of the common offshoring risks were perceived and alleviated in accordance with previous research, with the exception of the task distribution risk area. In this case, high task uncertainty, equivocality, and coupling...

  1. Automated computer software development standards enforcement

    Energy Technology Data Exchange (ETDEWEB)

    Yule, H.P.; Formento, J.W.

    1991-01-01

    The Uniform Development Environment (UDE) is being investigated as a means of enforcing software engineering standards. For the programmer, it provides an environment containing the tools and utilities necessary for orderly and controlled development and maintenance of code according to requirements. In addition, it provides DoD management and developer management the tools needed for all phases of software life cycle management and control, from project planning and management, to code development, configuration management, version control, and change control. This paper reports the status of UDE development and field testing. 5 refs.

  2. Analysis of Empirical Software Effort Estimation Models

    CERN Document Server

    Basha, Saleem

    2010-01-01

    Reliable effort estimation remains an ongoing challenge to software engineers. Accurate effort estimation is the state of art of software engineering, effort estimation of software is the preliminary phase between the client and the business enterprise. The relationship between the client and the business enterprise begins with the estimation of the software. The credibility of the client to the business enterprise increases with the accurate estimation. Effort estimation often requires generalizing from a small number of historical projects. Generalization from such limited experience is an inherently under constrained problem. Accurate estimation is a complex process because it can be visualized as software effort prediction, as the term indicates prediction never becomes an actual. This work follows the basics of the empirical software effort estimation models. The goal of this paper is to study the empirical software effort estimation. The primary conclusion is that no single technique is best for all sit...

  3. Architecture independent environment for developing engineering software on MIMD computers

    Science.gov (United States)

    Valimohamed, Karim A.; Lopez, L. A.

    1990-01-01

    Engineers are constantly faced with solving problems of increasing complexity and detail. Multiple Instruction stream Multiple Data stream (MIMD) computers have been developed to overcome the performance limitations of serial computers. The hardware architectures of MIMD computers vary considerably and are much more sophisticated than serial computers. Developing large scale software for a variety of MIMD computers is difficult and expensive. There is a need to provide tools that facilitate programming these machines. First, the issues that must be considered to develop those tools are examined. The two main areas of concern were architecture independence and data management. Architecture independent software facilitates software portability and improves the longevity and utility of the software product. It provides some form of insurance for the investment of time and effort that goes into developing the software. The management of data is a crucial aspect of solving large engineering problems. It must be considered in light of the new hardware organizations that are available. Second, the functional design and implementation of a software environment that facilitates developing architecture independent software for large engineering applications are described. The topics of discussion include: a description of the model that supports the development of architecture independent software; identifying and exploiting concurrency within the application program; data coherence; engineering data base and memory management.

  4. Object-Oriented Software Development Environments

    DEFF Research Database (Denmark)

    The book "Object-Oriented Environments - The Mjølner Approach" presents the collective results of the Mjølner Project. The project was set up to work on the widely recognized problems of developing, maintaining and understanding large software systems. The starting point was to use object...... and realizations User interfaces for environments and realizations Grammar-based software architectures Structure-based editing Language implementation, runtime organization, garbage collection Incremental compilation techniques...

  5. Software Development for JSA Source Jerk Measurement

    Institute of Scientific and Technical Information of China (English)

    LUO; Huang-da; ZHANG; Tao

    2013-01-01

    We have developed a series of experiment measurement system for Jordan sub-critical assembly.The source jerk measurement system is used for measuring the reactivity of sub-critical reactor.It mainlyconsists of a BF3 neutron detector around the reactor core,main amplifier,the data acquisition and processing software.The software acquires neutron pulse data by controlling DAQ card,and displaying

  6. Locking Down the Software Development Environment

    Science.gov (United States)

    2014-12-01

    the design of a component [3] and this is critical to looking at where the threats exist and oppor- tunities for threat exposure in the in the software...focus on building functionality, not managing the change [8]. Software CM ( SCM ) is the traditional technique for controlling the content of...deliverable components and is an essential element of a robust security policy [9]. Figure 1 illustrates a traditional unit-level development process

  7. Advanced Software Development Workstation Project, phase 3

    Science.gov (United States)

    1991-01-01

    ACCESS provides a generic capability to develop software information system applications which are explicitly intended to facilitate software reuse. In addition, it provides the capability to retrofit existing large applications with a user friendly front end for preparation of input streams in a way that will reduce required training time, improve the productivity even of experienced users, and increase accuracy. Current and past work shows that ACCESS will be scalable to much larger object bases.

  8. Software Development for Decision Analysis

    Science.gov (United States)

    1975-03-01

    34|"𔃻" ’’ " ’■|’■’ J - " ■»—w—"■ ■ 1 »I ■■ »I mill 1 11 1 MI independence (Category 1) or partial Independence (Categories 2 and 3) can >>e...place vandom variable 1 after decision 3 in the tree. In the nuit phase of our research, we hope to develop general algorithms for translating any...nMiu uiiim^p^M (^PLANT EFFICIENCY^ \\~r\\ |1T) % (CAPITAL COSTS Tris ^ /KW (OPERATING COSTS^) r=TTl MILLS /KWH (jmc^lTIQn-j] MILLS /KWH.*’** By

  9. Technological Development and Software Piracy

    OpenAIRE

    Romeu, Andrés; Martínez Sánchez, Francisco

    2015-01-01

    In this paper, we analyze the differences in piracy rates from one country to another. Like previous papers on the topic, we find that more developed countries have lower incentives for pirating. Unlike previous papers, we find that the piracy rate is positively correlated with the tax burden rate but negatively correlated with the domestic market size and exports over GDP. We also separate the impacts of education and R&D on piracy, and find two effects with opposite signs. Moreover, we find...

  10. Teaching Software Developers to Perform UX Tasks

    DEFF Research Database (Denmark)

    Øvad, Tina; Bornoe, Nis; Larsen, Lars Bo

    2015-01-01

    Good UX design is becoming important within the industry when developing new products. This entails that UX skills have to be available in the development processes. This paper investigates the opportunities of using software developers as a UX work resource in the day-to-day working practice...

  11. Saphire models and software for ASP evaluations

    Energy Technology Data Exchange (ETDEWEB)

    Sattison, M.B. [Idaho National Engineering Lab., Idaho Falls, ID (United States)

    1997-02-01

    The Idaho National Engineering Laboratory (INEL) over the three years has created 75 plant-specific Accident Sequence Precursor (ASP) models using the SAPHIRE suite of PRA codes. Along with the new models, the INEL has also developed a new module for SAPHIRE which is tailored specifically to the unique needs of ASP evaluations. These models and software will be the next generation of risk tools for the evaluation of accident precursors by both the U.S. Nuclear Regulatory Commission`s (NRC`s) Office of Nuclear Reactor Regulation (NRR) and the Office for Analysis and Evaluation of Operational Data (AEOD). This paper presents an overview of the models and software. Key characteristics include: (1) classification of the plant models according to plant response with a unique set of event trees for each plant class, (2) plant-specific fault trees using supercomponents, (3) generation and retention of all system and sequence cutsets, (4) full flexibility in modifying logic, regenerating cutsets, and requantifying results, and (5) user interface for streamlined evaluation of ASP events. Future plans for the ASP models is also presented.

  12. A High-Level Modeling Software for DSP Application Development%一种面向DSP应用的高层次建模软件

    Institute of Scientific and Technical Information of China (English)

    朱艳; 耿锐; 余锋林

    2012-01-01

    本文提出了一种面向DSP应用的高层次建模软件,这个软件是一个建模、仿真及代码生成工具。它具有方便直观的图形编辑界面,用户可以通过简单的鼠标操作快速建立系统模型,软件自动生成高效率代码并编译,允许用户进行仿真和观察结果。使用该软件可以加快从算法设计到开发产品的工作流程。%A high-level modeling software is proposed in this article. The software is designed for modeling and simulation of digital signal processing applications using block diagram language. It generates codes based on a user-defined model automatically, performs building and simulation, and then allows users to view simulation results to verify the model. The software provides a path to rapidly develop applications on DSP processors.

  13. Automated software development using the HALDEN prover

    Energy Technology Data Exchange (ETDEWEB)

    Sivertsen, Terje

    2002-08-15

    This report presents the HALDEN (Halden Algebraic Language and Design ENvironment) Prover and provides a guide to its application in automated software development. A frame- work for formal software development based on the algebraic specification language HALDEN ASL, the HALDEN Prover supports many different tasks related to formal software development, including automated theorem proving, transformation of specifications, translation of specifications into Prolog, generation of formatted text documents, integration of Petri nets and algebraic specifications, etc. Formal methods and automated code generation constitute the basis of the automation-based paradigm, which represents a promising approach to ensuring traceability and correct implementation of requirements. Formal development with the HALDEN Prover can be carried out in a manner that reflects this paradigm. Accordingly, formal specifications are first developed from informal requirements, then elaborated into detailed formal descriptions by repeated validation, which are finally translated into some conventional programming language. Integrating formal methods with automated software development, the HALDEN Prover supports a methodology where formality is utilized in the automation of the software process. This is reflected in the report, which gives guidance to the tool support provided for the different elements of the process, including specification,animation, walk-through, automated theorem proving, translation, and documentation. The present report is complemented by HWR-646, which covers transformation and combination of specifications, and the Petri net support tool HALDEN CE. (Author)

  14. Open Source Software Reliability Growth Model by Considering Change- Point

    Directory of Open Access Journals (Sweden)

    Mashaallah Basirzadeh

    2012-01-01

    Full Text Available The modeling technique for Software Reliability is reaching its prosperity. Software reliability growth models have been used extensively for closed source software. The design and development of open source software (OSS is different from closed source software. We observed some basic characteristics for open source software like (i more instructions execution and code coverage taking place with respect to time, (ii release early, release often (iii frequent addition of patches (iv heterogeneity in fault density and effort expenditure (v Frequent release activities seem to have changed the bug dynamics significantly (vi Bug reporting on bug tracking system drastically increases and decreases. Due to this reason bug reported on bug tracking system keeps an irregular state and fluctuations. Therefore, fault detection/removal process can not be smooth and may be changed at some time point called change-point. In this paper, an instructions executed dependent software reliability growth model has been developed by considering change-point in order to cater diverse and huge user profile, irregular state of bug tracking system and heterogeneity in fault distribution. We have analyzed actual software failure count data to show numerical examples of software reliability assessment for the OSS. We also compare our model with the conventional in terms of goodness-of-fit for actual data. We have shown that the proposed model can assist improvement of quality for OSS systems developed under the open source project.

  15. Research on Software Technology Construction Based on Competency Model of Software Development Position%基于胜任力模型的软件技术专业职业能力构建研究

    Institute of Scientific and Technical Information of China (English)

    朱红英; 徐晓晖

    2014-01-01

    To occupation ability construction of training target oriented to make software professional, help students to develop post adaptability, and sustainable development capacity of occupation. Because of the different positions require skill level, knowledge structure, knowledge is different, so different positions to establish competency model is particularly necessary, based on the number of enterprises related R & D staff interviews, iceberg model established software development competence, and from the curriculum design, teaching, reform assessment methods discussed the construction of software development competency model of software technology.%以职业能力构建为导向制定软件专业培养目标,有助于培养学生岗位适应能力,以及可持续职业发展能力。由于不同的岗位需要的工作技能、知识结构、知识水平有所不同,因此针对不同的岗位建立胜任力模型显得尤为必要,本文通过对多家企业相关研发人员的访谈调研,建立了软件开发岗位胜任力的冰山模型,并从课程体系设计、教学改革、考核方式等方面讨论了基于软件开发岗位胜任力模型的高职软件技术专业职业能力构建。实践表明,本文所提出的模型有很好的实际运行能力,有助于加强高校软件技术的职业能力构建,对于高校软件技术的职业能力构建具有很好的拓展性。

  16. Scrum Practices and Global Software Development

    Directory of Open Access Journals (Sweden)

    Areej Sewalh AL_Zaidi

    2014-10-01

    Full Text Available Global software development (GSD is one of the emerging areas of software engineering. Stakeholders are distributed located that brings into several challenges to coordinate and collaborate effectively. Scrum is one the widely practiced agile methodologies. Majority of the software development companies showed a great interest from last few years to apply Scrum methodology in distributed development to solve the coordination and communication problems. Although Scrum contains good features and strengths but still there are improvement possibilities to solve the problems of coordination and collaboration in GSD. Majority of software development companies face the problems of coordination and communication in GSD projects. This paper proposes a novel solution to mitigate the coordination and communication challenges of GSD projects. The survey is used as a research methodology to evaluate the proposed solution. The proposed solution is supported by 62.24%. We anticipate that the proposed solution will help the software development companies to mitigate the coordination and communication challenges of GSD projects.

  17. Free and Open Source Software for Development

    CERN Document Server

    van Reijswoud, Victor

    2008-01-01

    Development organizations and International Non-Governmental Organizations have been emphasizing the high potential of Free and Open Source Software for the Less Developed Countries. Cost reduction, less vendor dependency and increased potential for local capacity development have been their main arguments. In spite of its advantages, Free and Open Source Software is not widely adopted at the African continent. In this book the authors will explore the grounds on with these expectations are based. Where do they come from and is there evidence to support these expectations? Over the past years several projects have been initiated and some good results have been achieved, but at the same time many challenges were encountered. What lessons can be drawn from these experiences and do these experiences contain enough evidence to support the high expectations? Several projects and their achievements will be considered. In the final part of the book the future of Free and Open Source Software for Development will be ...

  18. A Framework for Modelling Software Requirements

    Directory of Open Access Journals (Sweden)

    Dhirendra Pandey

    2011-05-01

    Full Text Available Requirement engineering plays an important role in producing quality software products. In recent past years, some approaches of requirement framework have been designed to provide an end-to-end solution for system development life cycle. Textual requirements specifications are difficult to learn, design, understand, review, and maintain whereas pictorial modelling is widely recognized as an effective requirement analysis tool. In this paper, we will present a requirement modelling framework with the analysis of modern requirements modelling techniques. Also, we will discuss various domains of requirement engineering with the help of modelling elements such as semantic map of business concepts, lifecycles of business objects, business processes, business rules, system context diagram, use cases and their scenarios, constraints, and user interface prototypes. The proposed framework will be illustrated with the case study of inventory management system.

  19. Software Development Factories, the Project Management Perspective

    OpenAIRE

    Felician ALECU

    2012-01-01

    In a software factory, the applications are developed in the same way Henri Ford started manufacturing cars. In such a way, a customized solution could be obtained within a reasonable budget and within the foreseen timeframe. This development method offers a flexible solution that can be readapted rapidly and automatically to the changing business needs, so the Project Management becomes a real challenge.

  20. Intrinsic Motivation in Open Source Software Development

    DEFF Research Database (Denmark)

    Bitzer, J.; W., Schrettl,; Schröder, Philipp

    2004-01-01

    This papers sheds light on the puzzling evidence that even though open source software (OSS) is a public good, it is developed for free by highly qualified, young and motivated individuals, and evolves at a rapid pace. We show that once OSS development is understood as the private provision...

  1. Enterprise-Scale Agile Software Development

    CERN Document Server

    Schiel, James

    2009-01-01

    Covering quality development practices based on ISO 9001, which help you create consistently high-quality software in a cost-efficient manner, this resource shows you how to: improve project management practices and product quality assurance; adopt new management methods and requirements; and, involve your current customers in development

  2. Engineering software development with HyperCard

    Science.gov (United States)

    Darko, Robert J.

    1990-01-01

    The successful and unsuccessful techniques used in the development of software using HyperCard are described. The viability of the HyperCard for engineering is evaluated and the future use of HyperCard by this particular group of developers is discussed.

  3. The Elements of an Effective Software Development Plan - Software Development Process Guidebook

    Science.gov (United States)

    2011-11-11

    of their respective owners. SP0036(1, 5840, 219, MLM ) Abstract Every software development program must have a Software Development Plan (SDP). The... contract , have historically a high probability of cost and schedule overruns. This Guidebook is intended to significantly increase the probability of a...successful software-intensive contract . The principal objectives of this SDP Guidebook are: • To assist the acquisition agency in evaluating SDPs

  4. NHPP-Based Software Reliability Models Using Equilibrium Distribution

    Science.gov (United States)

    Xiao, Xiao; Okamura, Hiroyuki; Dohi, Tadashi

    Non-homogeneous Poisson processes (NHPPs) have gained much popularity in actual software testing phases to estimate the software reliability, the number of remaining faults in software and the software release timing. In this paper, we propose a new modeling approach for the NHPP-based software reliability models (SRMs) to describe the stochastic behavior of software fault-detection processes. The fundamental idea is to apply the equilibrium distribution to the fault-detection time distribution in NHPP-based modeling. We also develop efficient parameter estimation procedures for the proposed NHPP-based SRMs. Through numerical experiments, it can be concluded that the proposed NHPP-based SRMs outperform the existing ones in many data sets from the perspective of goodness-of-fit and prediction performance.

  5. Trust in Co-sourced Software Development

    DEFF Research Database (Denmark)

    Schlichter, Bjarne Rerup; Persson, John Stouby

    2014-01-01

    Software development projects are increasingly geographical distributed with offshoring. Co-sourcing is a highly integrative and cohesive approach, seen successful, to software development offshoring. However, research of how dynamic aspects of trust are shaped in co-sourcing activities is limited....... We present a case study of how the co-sourcing relationship between a certified CMMI-level 5 Danish software company and an offshoring supplier can be conceptualized as an Abstract System. An Abstract System is a dis-embedded social system (such as banking) that is trusted despite lack of detailed...... understanding or personal trust relations. The paper suggests how certain work practices among developers and managers can be explained using a dynamic trust lens based on Abstract Systems, especially dis- and re-embedding mechanisms...

  6. Development of oxidation heat of the coal left in the mined-out area of a longwall face: Modelling using the fluent software

    Directory of Open Access Journals (Sweden)

    Taraba B.

    2008-01-01

    Full Text Available A commercial CFD software program, Fluent, was used to study oxidation processes in the longwall mined-out (gob area. A three-dimensional model of the gob area with an advancing coal face has been developed. For the model, typical oxidation behavior of a bituminous coal from the Ostrava-Karviná District was incorporated as resulted from laboratory investigations. The longwall gob area was designed on the basis of the actual longwall face district. Detailed measurements in the district then enabled re-verification of the model outputs with actual data in situ. The main attention was paid to modelling the effect of grain size of the coal left in the mined-out area on the oxidation heat and gases evolution. Numerical simulations confirmed the existence of an 'optimal' zone for intense development of the spontaneous heating process in the gob area.

  7. Next Generation Lightweight Mirror Modeling Software

    Science.gov (United States)

    Arnold, William R., Sr.; Fitzgerald, Mathew; Rosa, Rubin Jaca; Stahl, H. Philip

    2013-01-01

    The advances in manufacturing techniques for lightweight mirrors, such as EXELSIS deep core low temperature fusion, Corning's continued improvements in the Frit bonding process and the ability to cast large complex designs, combined with water-jet and conventional diamond machining of glasses and ceramics has created the need for more efficient means of generating finite element models of these structures. Traditional methods of assembling 400,000 + element models can take weeks of effort, severely limiting the range of possible optimization variables. This paper will introduce model generation software developed under NASA sponsorship for the design of both terrestrial and space based mirrors. The software deals with any current mirror manufacturing technique, single substrates, multiple arrays of substrates, as well as the ability to merge submodels into a single large model. The modeler generates both mirror and suspension system elements, suspensions can be created either for each individual petal or the whole mirror. A typical model generation of 250,000 nodes and 450,000 elements only takes 5-10 minutes, much of that time being variable input time. The program can create input decks for ANSYS, ABAQUS and NASTRAN. An archive/retrieval system permits creation of complete trade studies, varying cell size, depth, and petal size, suspension geometry with the ability to recall a particular set of parameters and make small or large changes with ease. The input decks created by the modeler are text files which can be modified by any editor, all the key shell thickness parameters are accessible and comments in deck identify which groups of elements are associated with these parameters. This again makes optimization easier. With ANSYS decks, the nodes representing support attachments are grouped into components; in ABAQUS these are SETS and in NASTRAN as GRIDPOINT SETS, this make integration of these models into large telescope or satellite models easier.

  8. Next-Generation Lightweight Mirror Modeling Software

    Science.gov (United States)

    Arnold, William R., Sr.; Fitzgerald, Mathew; Rosa, Rubin Jaca; Stahl, Phil

    2013-01-01

    The advances in manufacturing techniques for lightweight mirrors, such as EXELSIS deep core low temperature fusion, Corning's continued improvements in the Frit bonding process and the ability to cast large complex designs, combined with water-jet and conventional diamond machining of glasses and ceramics has created the need for more efficient means of generating finite element models of these structures. Traditional methods of assembling 400,000 + element models can take weeks of effort, severely limiting the range of possible optimization variables. This paper will introduce model generation software developed under NASA sponsorship for the design of both terrestrial and space based mirrors. The software deals with any current mirror manufacturing technique, single substrates, multiple arrays of substrates, as well as the ability to merge submodels into a single large model. The modeler generates both mirror and suspension system elements, suspensions can be created either for each individual petal or the whole mirror. A typical model generation of 250,000 nodes and 450,000 elements only takes 5-10 minutes, much of that time being variable input time. The program can create input decks for ANSYS, ABAQUS and NASTRAN. An archive/retrieval system permits creation of complete trade studies, varying cell size, depth, and petal size, suspension geometry with the ability to recall a particular set of parameters and make small or large changes with ease. The input decks created by the modeler are text files which can be modified by any editor, all the key shell thickness parameters are accessible and comments in deck identify which groups of elements are associated with these parameters. This again makes optimization easier. With ANSYS decks, the nodes representing support attachments are grouped into components; in ABAQUS these are SETS and in NASTRAN as GRIDPOINT SETS, this make integration of these models into large telescope or satellite models possible

  9. Firing Room Remote Application Software Development

    Science.gov (United States)

    Liu, Kan

    2014-01-01

    The Engineering and Technology Directorate (NE) at National Aeronautics and Space Administration (NASA) Kennedy Space Center (KSC) is designing a new command and control system for the checkout and launch of Space Launch System (SLS) and future rockets. The purposes of the semester long internship as a remote application software developer include the design, development, integration, and verification of the software and hardware in the firing rooms, in particular with the Mobile Launcher (ML) Launch Accessories subsystem. In addition, a Conversion Fusion project was created to show specific approved checkout and launch engineering data for public-friendly display purposes.

  10. Software Development with DevOps

    OpenAIRE

    Kristinsson, Rögnvaldur

    2015-01-01

    The goal of the study was to introduce DevOps in software development, its methods and approaches to software development. I was introduced to the subject by one of my teach-ers, which let me into further studies and researched on the subject and finally choosing it for the study. The subject was completely new to me when I started the study which I found inspirational as I was learning a new and an interesting subject on a daily basis dur-ing the process of writing the study. The materia...

  11. On Software Development of Characteristic Set Method

    Institute of Scientific and Technical Information of China (English)

    WU Yong-wei; WANG Ding-kang; YANG Hong; LIN Dong-dai

    2002-01-01

    Characteristic set method of polynomial equation solving has been widely spread and its implementation in software has been urged to consider in recent years. Several packages for the method are implemented in some computer algebra systems, such as REDUCE and Maple. In order to improve the efficiency of the method, we have developed a computer algebra system "ELIMINO" written in C language and implemented on Linux operation system on a PC. The authors wish to share with the reader the knowledge and experiences about the design and development of software package of the characteristic set method.

  12. Analyzing, Modelling, and Designing Software Ecosystems

    DEFF Research Database (Denmark)

    Manikas, Konstantinos

    as the software development and distribution by a set of actors dependent on each other and the ecosystem. We commence on the hypothesis that the establishment of a software ecosystem on the telemedicine services of Denmark would address these issues and investigate how a software ecosystem can foster...... structures, supporting actor involvement in the ecosystem, and (v) proper orchestration and governance of the ecosystem to promote and support the changes and the health of the ecosystem. Our work contributes to Net4Care, a platform to serve as the common platform in the software ecosystem under...

  13. A Quantitative Study of Global Software Development Teams, Requirements, and Software Projects

    Science.gov (United States)

    Parker, Linda L.

    2016-01-01

    The study explored the relationship between global software development teams, effective software requirements, and stakeholders' perception of successful software development projects within the field of information technology management. It examined the critical relationship between Global Software Development (GSD) teams creating effective…

  14. A Quantitative Study of Global Software Development Teams, Requirements, and Software Projects

    Science.gov (United States)

    Parker, Linda L.

    2016-01-01

    The study explored the relationship between global software development teams, effective software requirements, and stakeholders' perception of successful software development projects within the field of information technology management. It examined the critical relationship between Global Software Development (GSD) teams creating effective…

  15. Software development methodology for high consequence systems

    Energy Technology Data Exchange (ETDEWEB)

    Baca, L.S.; Bouchard, J.F.; Collins, E.W.; Eisenhour, M.; Neidigk, D.D.; Shortencarier, M.J.; Trellue, P.A.

    1997-10-01

    This document describes a Software Development Methodology for High Consequence Systems. A High Consequence System is a system whose failure could lead to serious injury, loss of life, destruction of valuable resources, unauthorized use, damaged reputation or loss of credibility or compromise of protected information. This methodology can be scaled for use in projects of any size and complexity and does not prescribe any specific software engineering technology. Tasks are described that ensure software is developed in a controlled environment. The effort needed to complete the tasks will vary according to the size, complexity, and risks of the project. The emphasis of this methodology is on obtaining the desired attributes for each individual High Consequence System.

  16. Monitoring Student Activity in Collaborative Software Development

    DEFF Research Database (Denmark)

    Dietsch, Daniel; Podelski, Andreas; Nam, Jaechang

    2013-01-01

    by weekly meetings with teaching assistants and instructors regarding group progress, code quality, and management issues. Through these meetings and their interactions with the software tools, students leave a detailed trace of data related to their individual engagement and their collaboration behavior......This paper presents data analysis from a course on Software Engineering in an effort to identify metrics and techniques that would allow instructor to act proactively and identify patterns of low engagement and inefficient peer collaboration. Over the last two terms, 106 students in their second...... year of studies formed 20 groups and worked collaboratively to develop video games. Throughout the lab, students have to use a variety of tools for managing and developing their projects, such as software version control, static analysis tools, wikis, mailing lists, etc. The students are also supported...

  17. The purely functional software deployment model

    NARCIS (Netherlands)

    Dolstra, E.

    2006-01-01

    Software deployment is the set of activities related to getting software components to work on the machines of end users. It includes activities such as installation, upgrading, uninstallation, and so on. Many tools have been developed to support deployment, but they all have serious limitations wi

  18. Aligning the economic modeling of software reuse with reuse practices

    NARCIS (Netherlands)

    Postmus, D.; Meijler, 27696

    2008-01-01

    In contrast to current practices where software reuse is applied recursively and reusable assets are tailored trough parameterization or specialization, existing reuse economic models assume that (i) the cost of reusing a software asset depends on its size and (ii) reusable assets are developed from

  19. COSTMODL: An automated software development cost estimation tool

    Science.gov (United States)

    Roush, George B.

    1991-01-01

    The cost of developing computer software continues to consume an increasing portion of many organizations' total budgets, both in the public and private sector. As this trend develops, the capability to produce reliable estimates of the effort and schedule required to develop a candidate software product takes on increasing importance. The COSTMODL program was developed to provide an in-house capability to perform development cost estimates for NASA software projects. COSTMODL is an automated software development cost estimation tool which incorporates five cost estimation algorithms including the latest models for the Ada language and incrementally developed products. The principal characteristic which sets COSTMODL apart from other software cost estimation programs is its capacity to be completely customized to a particular environment. The estimation equations can be recalibrated to reflect the programmer productivity characteristics demonstrated by the user's organization, and the set of significant factors which effect software development costs can be customized to reflect any unique properties of the user's development environment. Careful use of a capability such as COSTMODL can significantly reduce the risk of cost overruns and failed projects.

  20. Modeling software with finite state machines a practical approach

    CERN Document Server

    Wagner, Ferdinand; Wagner, Thomas; Wolstenholme, Peter

    2006-01-01

    Modeling Software with Finite State Machines: A Practical Approach explains how to apply finite state machines to software development. It provides a critical analysis of using finite state machines as a foundation for executable specifications to reduce software development effort and improve quality. This book discusses the design of a state machine and of a system of state machines. It also presents a detailed analysis of development issues relating to behavior modeling with design examples and design rules for using finite state machines. This volume describes a coherent and well-tested fr

  1. Maximum Entropy Discrimination Poisson Regression for Software Reliability Modeling.

    Science.gov (United States)

    Chatzis, Sotirios P; Andreou, Andreas S

    2015-11-01

    Reliably predicting software defects is one of the most significant tasks in software engineering. Two of the major components of modern software reliability modeling approaches are: 1) extraction of salient features for software system representation, based on appropriately designed software metrics and 2) development of intricate regression models for count data, to allow effective software reliability data modeling and prediction. Surprisingly, research in the latter frontier of count data regression modeling has been rather limited. More specifically, a lack of simple and efficient algorithms for posterior computation has made the Bayesian approaches appear unattractive, and thus underdeveloped in the context of software reliability modeling. In this paper, we try to address these issues by introducing a novel Bayesian regression model for count data, based on the concept of max-margin data modeling, effected in the context of a fully Bayesian model treatment with simple and efficient posterior distribution updates. Our novel approach yields a more discriminative learning technique, making more effective use of our training data during model inference. In addition, it allows of better handling uncertainty in the modeled data, which can be a significant problem when the training data are limited. We derive elegant inference algorithms for our model under the mean-field paradigm and exhibit its effectiveness using the publicly available benchmark data sets.

  2. IMPROVED SOFTWARE QUALITY ASSURANCE TECHNIQUES USING SAFE GROWTH MODEL

    Directory of Open Access Journals (Sweden)

    M.Sangeetha

    2010-09-01

    Full Text Available In our lives are governed by large, complex systems with increasingly complex software, and the safety, security, and reliability of these systems has become a major concern. As the software in today’ssystems grows larger, it has more defects, and these defects adversely affect the safety, security, and reliability of the systems. Software engineering is the application of a systematic, disciplined, quantifiable approach to the development, operation, andmaintenance of software. Software divides into two pieces: internal and external quality characteristics.External quality characteristics are those parts of a product that face its users, where internal quality characteristics are those that do not.Quality is conformance to product requirements and should be free. This research concerns the role of software Quality. Software reliability is an important facet of software quality. It is the probability of failure-freeoperation of a computer program in a specified environment for a specified time. In software reliability modeling, the parameters of the model are typically estimated from the test data of the corresponding component. However, the widely used point estimatorsare subject to random variations in the data, resulting in uncertainties in these estimated parameters. This research describes a new approach to the problem of software testing. The approach is based on Bayesian graphical models and presents formal mechanisms forthe logical structuring of the software testing problem, the probabilistic and statistical treatment of the uncertainties to be addressed, the test design and analysis process, and the incorporation and implication of test results. Once constructed, the models produced are dynamic representations of the software testingproblem. It explains need of the common test-and-fix software quality strategy is no longer adequate, and characterizes the properties of the quality strategy.

  3. Monolingual:One Way towards the Integrated Software Development Environment

    Institute of Scientific and Technical Information of China (English)

    王振宇

    1989-01-01

    The software development is considered as step wise abstract-implementation process in software life cycle.This paper presents a monolingual methodology and an embry of MONOL which uses a uniform scheme to describe software development process.

  4. General guidelines for biomedical software development

    Science.gov (United States)

    Silva, Luis Bastiao; Jimenez, Rafael C.; Blomberg, Niklas; Luis Oliveira, José

    2017-01-01

    Most bioinformatics tools available today were not written by professional software developers, but by people that wanted to solve their own problems, using computational solutions and spending the minimum time and effort possible, since these were just the means to an end. Consequently, a vast number of software applications are currently available, hindering the task of identifying the utility and quality of each. At the same time, this situation has hindered regular adoption of these tools in clinical practice. Typically, they are not sufficiently developed to be used by most clinical researchers and practitioners. To address these issues, it is necessary to re-think how biomedical applications are built and adopt new strategies that ensure quality, efficiency, robustness, correctness and reusability of software components. We also need to engage end-users during the development process to ensure that applications fit their needs. In this review, we present a set of guidelines to support biomedical software development, with an explanation of how they can be implemented and what kind of open-source tools can be used for each specific topic. PMID:28443186

  5. Communal Resources in Open Source Software Development

    Science.gov (United States)

    Spaeth, Sebastian; Haefliger, Stefan; von Krogh, Georg; Renzl, Birgit

    2008-01-01

    Introduction: Virtual communities play an important role in innovation. The paper focuses on the particular form of collective action in virtual communities underlying as Open Source software development projects. Method: Building on resource mobilization theory and private-collective innovation, we propose a theory of collective action in…

  6. A Prototype for the Support of Integrated Software Process Development and Improvement

    Science.gov (United States)

    Porrawatpreyakorn, Nalinpat; Quirchmayr, Gerald; Chutimaskul, Wichian

    An efficient software development process is one of key success factors for quality software. Not only can the appropriate establishment but also the continuous improvement of integrated project management and of the software development process result in efficiency. This paper hence proposes a software process maintenance framework which consists of two core components: an integrated PMBOK-Scrum model describing how to establish a comprehensive set of project management and software engineering processes and a software development maturity model advocating software process improvement. Besides, a prototype tool to support the framework is introduced.

  7. Model Checking Software Systems: A Case Study.

    Science.gov (United States)

    1995-03-10

    gained. We suggest a radically different tack: model checking. The two formal objects compared are a finite state machine model of the software...simply terminates. 3.1.1. State Machine Model Let’s consider a simplified model with just one client, one server, and one file. The top graph

  8. Reliable Software Development for Machine Protection Systems

    CERN Document Server

    Anderson, D; Dragu, M; Fuchsberger, K; Garnier, JC; Gorzawski, AA; Koza, M; Krol, K; Misiowiec, K; Stamos, K; Zerlauth, M

    2014-01-01

    The Controls software for the Large Hadron Collider (LHC) at CERN, with more than 150 millions lines of code, resides amongst the largest known code bases in the world1. Industry has been applying Agile software engineering techniques for more than two decades now, and the advantages of these techniques can no longer be ignored to manage the code base for large projects within the accelerator community. Furthermore, CERN is a particular environment due to the high personnel turnover and manpower limitations, where applying Agile processes can improve both, the codebase management as well as its quality. This paper presents the successful application of the Agile software development process Scrum for machine protection systems at CERN, the quality standards and infrastructure introduced together with the Agile process as well as the challenges encountered to adapt it to the CERN environment.

  9. Software Development Standard and Software Engineering Practice: A Case Study of Bangladesh

    CERN Document Server

    Begum, Zerina; Hafiz, Mohd Zulfiquar; Islam, Md Saiful; Shoyaib, Md; 10.3329/jbas.v32i2.2432

    2010-01-01

    Improving software process to achieve high quality in a software development organization is the key factor to success. Bangladeshi software firms have not experienced much in this particular area in comparison to other countries. The ISO 9001 and CMM standard has become a basic part of software development. The main objectives of our study are: 1) To understand the software development process uses by the software developer firms in Bangladesh 2) To identify the development practices based on established quality standard and 3) To establish a standardized and coherent process for the development of software for a specific project. It is revealed from this research that software industries of Bangladesh are lacking in target set for software process and improvement, involvement of quality control activities, and standardize business expertise practice. This paper investigates the Bangladeshi software industry in the light of the above challenges.

  10. Lean Development with the Morpheus Simulation Software

    Science.gov (United States)

    Brogley, Aaron C.

    2013-01-01

    The Morpheus project is an autonomous robotic testbed currently in development at NASA's Johnson Space Center (JSC) with support from other centers. Its primary objectives are to test new 'green' fuel propulsion systems and to demonstrate the capability of the Autonomous Lander Hazard Avoidance Technology (ALHAT) sensor, provided by the Jet Propulsion Laboratory (JPL) on a lunar landing trajectory. If successful, these technologies and lessons learned from the Morpheus testing cycle may be incorporated into a landing descent vehicle used on the moon, an asteroid, or Mars. In an effort to reduce development costs and cycle time, the project employs lean development engineering practices in its development of flight and simulation software. The Morpheus simulation makes use of existing software packages where possible to reduce the development time. The development and testing of flight software occurs primarily through the frequent test operation of the vehicle and incrementally increasing the scope of the test. With rapid development cycles, risk of loss of the vehicle and loss of the mission are possible, but efficient progress in development would not be possible without that risk.

  11. A meta-composite software development approach for translational research.

    Science.gov (United States)

    Sadasivam, Rajani S; Tanik, Murat M

    2013-06-01

    Translational researchers conduct research in a highly data-intensive and continuously changing environment and need to use multiple, disparate tools to achieve their goals. These researchers would greatly benefit from meta-composite software development or the ability to continuously compose and recompose tools together in response to their ever-changing needs. However, the available tools are largely disconnected, and current software approaches are inefficient and ineffective in their support for meta-composite software development. Building on the composite services development approach, the de facto standard for developing integrated software systems, we propose a concept-map and agent-based meta-composite software development approach. A crucial step in composite services development is the modeling of users' needs as processes, which can then be specified in an executable format for system composition. We have two key innovations. First, our approach allows researchers (who understand their needs best) instead of technicians to take a leadership role in the development of process models, reducing inefficiencies and errors. A second innovation is that our approach also allows for modeling of complex user interactions as part of the process, overcoming the technical limitations of current tools. We demonstrate the feasibility of our approach using a real-world translational research use case. We also present results of usability studies evaluating our approach for future refinements.

  12. Development of automated conjunctival hyperemia analysis software.

    Science.gov (United States)

    Sumi, Tamaki; Yoneda, Tsuyoshi; Fukuda, Ken; Hoshikawa, Yasuhiro; Kobayashi, Masahiko; Yanagi, Masahide; Kiuchi, Yoshiaki; Yasumitsu-Lovell, Kahoko; Fukushima, Atsuki

    2013-11-01

    Conjunctival hyperemia is observed in a variety of ocular inflammatory conditions. The evaluation of hyperemia is indispensable for the treatment of patients with ocular inflammation. However, the major methods currently available for evaluation are based on nonquantitative and subjective methods. Therefore, we developed novel software to evaluate bulbar hyperemia quantitatively and objectively. First, we investigated whether the histamine-induced hyperemia of guinea pigs could be quantified by image analysis. Bulbar conjunctival images were taken by means of a digital camera, followed by the binarization of the images and the selection of regions of interest (ROIs) for evaluation. The ROIs were evaluated by counting the number of absolute pixel values. Pixel values peaked significantly 1 minute after histamine challenge was performed and were still increased after 5 minutes. Second, we applied the same method to antigen (ovalbumin)-induced hyperemia of sensitized guinea pigs, acquiring similar results except for the substantial upregulation in the first 5 minutes after challenge. Finally, we analyzed human bulbar hyperemia using the new software we developed especially for human usage. The new software allows the automatic calculation of pixel values once the ROIs have been selected. In our clinical trials, the percentage of blood vessel coverage of ROIs was significantly higher in the images of hyperemia caused by allergic conjunctival diseases and hyperemia induced by Bimatoprost, compared with those of healthy volunteers. We propose that this newly developed automated hyperemia analysis software will be an objective clinical tool for the evaluation of ocular hyperemia.

  13. Development of Flexible Software Process Lines with Variability Operations

    DEFF Research Database (Denmark)

    Schramm, Joachim; Dohrmann, Patrick; Kuhrmann, Marco

    2015-01-01

    Context: Software processes evolve over time and several approaches were proposed to support the required flexibility. Yet, little is known whether these approaches sufficiently support the development of large software processes. A software process line helps to systematically develop and manage...... families of processes and, as part of this, variability operations provide means to modify and reuse pre-defined process assets. Objective: Our goal is to evaluate the feasibility of variability operations to support the development of flexible software process lines. Method: We conducted a longitudinal...... study in which we studied 5 variants of the V-Modell XT process line for 2 years. Results: Our results show the variability operation instrument feasible in practice. We analyzed 616 operation exemplars addressing various customization scenarios, and we found 87 different operation types contributed...

  14. Software Testing Method Based on Model Comparison

    Institute of Scientific and Technical Information of China (English)

    XIE Xiao-dong; LU Yan-sheng; MAO Cheng-yin

    2008-01-01

    A model comparison based software testing method (MCST) is proposed. In this method, the requirements and programs of software under test are transformed into the ones in the same form, and described by the same model describe language (MDL).Then, the requirements are transformed into a specification model and the programs into an implementation model. Thus, the elements and structures of the two models are compared, and the differences between them are obtained. Based on the diffrences, a test suite is generated. Different MDLs can be chosen for the software under test. The usages of two classical MDLs in MCST, the equivalence classes model and the extended finite state machine (EFSM) model, are described with example applications. The results show that the test suites generated by MCST are more efficient and smaller than some other testing methods, such as the path-coverage testing method, the object state diagram testing method, etc.

  15. MATHEMATICAL MODEL FOR SOFTWARE USABILITY AUTOMATED EVALUATION AND ASSURANCE

    Directory of Open Access Journals (Sweden)

    І. Гученко

    2011-04-01

    Full Text Available The subject of the research is software usability and the aim is construction of mathematicalmodel of estimation and providing of the set level of usability. Methodology of structural analysis,methods of multicriterion optimization and theory of making decision, method of convolution,scientific methods of analysis and analogies is used in the research. The result of executed work isthe model for software usability automated evaluation and assurance that allows not only toestimate the current level of usability during every iteration of agile development but also tomanage the usability of created software products. Results can be used for the construction ofautomated support systems of management the software usability.

  16. Software Defect Prediction Models for Quality Improvement: A Literature Study

    Directory of Open Access Journals (Sweden)

    Mrinal Singh Rawat

    2012-09-01

    Full Text Available In spite of meticulous planning, well documentation and proper process control during software development, occurrences of certain defects are inevitable. These software defects may lead to degradation of the quality which might be the underlying cause of failure. In todays cutting edge competition its necessary to make conscious efforts to control and minimize defects in software engineering. However, these efforts cost money, time and resources. This paper identifies causative factors which in turn suggest the remedies to improve software quality and productivity. The paper also showcases on how the various defect prediction models are implemented resulting in reduced magnitude of defects.

  17. Software development methods and usability: Perspectives from a survey in the software industry in Norway

    OpenAIRE

    Bygstad, B; G. Ghinea; Brevik, E.

    2008-01-01

    This paper investigates the relationship between traditional software development methodologies and usability. The point of departure is the assumption that two important disciplines in software development, one of software development methods (SDMs) and one of usability work, are not integrated in industrial software projects. Building on previous research we investigate two questions; (1) Will software companies generally acknowledge the importance of usability, but not prioritise it in in...

  18. Developing collaborative environments - A Holistic software development methodology

    Energy Technology Data Exchange (ETDEWEB)

    PETERSEN,MARJORIE B.; MITCHINER,JOHN L.

    2000-03-08

    Sandia National Laboratories has been developing technologies to support person-to-person collaboration and the efforts of teams in the business and research communities. The technologies developed include knowledge-based design advisors, knowledge management systems, and streamlined manufacturing supply chains. These collaborative environments in which people can work together sharing information and knowledge have required a new approach to software development. The approach includes an emphasis on the requisite change in business practice that often inhibits user acceptance of collaborative technology. Leveraging the experience from this work, they have established a multidisciplinary approach for developing collaborative software environments. They call this approach ``A Holistic Software Development Methodology''.

  19. Coupled Multi-physical Simulations for the Assessment of Nuclear Waste Repository Concepts: Modeling, Software Development and Simulation

    Science.gov (United States)

    Massmann, J.; Nagel, T.; Bilke, L.; Böttcher, N.; Heusermann, S.; Fischer, T.; Kumar, V.; Schäfers, A.; Shao, H.; Vogel, P.; Wang, W.; Watanabe, N.; Ziefle, G.; Kolditz, O.

    2016-12-01

    As part of the German site selection process for a high-level nuclear waste repository, different repository concepts in the geological candidate formations rock salt, clay stone and crystalline rock are being discussed. An open assessment of these concepts using numerical simulations requires physical models capturing the individual particularities of each rock type and associated geotechnical barrier concept to a comparable level of sophistication. In a joint work group of the Helmholtz Centre for Environmental Research (UFZ) and the German Federal Institute for Geosciences and Natural Resources (BGR), scientists of the UFZ are developing and implementing multiphysical process models while BGR scientists apply them to large scale analyses. The advances in simulation methods for waste repositories are incorporated into the open-source code OpenGeoSys. Here, recent application-driven progress in this context is highlighted. A robust implementation of visco-plasticity with temperature-dependent properties into a framework for the thermo-mechanical analysis of rock salt will be shown. The model enables the simulation of heat transport along with its consequences on the elastic response as well as on primary and secondary creep or the occurrence of dilatancy in the repository near field. Transverse isotropy, non-isothermal hydraulic processes and their coupling to mechanical stresses are taken into account for the analysis of repositories in clay stone. These processes are also considered in the near field analyses of engineered barrier systems, including the swelling/shrinkage of the bentonite material. The temperature-dependent saturation evolution around the heat-emitting waste container is described by different multiphase flow formulations. For all mentioned applications, we illustrate the workflow from model development and implementation, over verification and validation, to repository-scale application simulations using methods of high performance computing.

  20. The digital guide to software development

    CERN Document Server

    Dickinson, Christine

    1989-01-01

    Here is the first published description of the processes and practices, tools, and methods this industry giant uses to develop its software products. This 'shirt-sleeves' guide is packed with diagrams and tables that illustrate each step in the complexsoftware development process. You'll learn all about Digital's standard 'phase review process,' the role of teams and their leaders, how CASE tools work, and how to control a project while improving productivity and product quality.

  1. Software Development Factories, the Project Management Perspective

    Directory of Open Access Journals (Sweden)

    Felician ALECU

    2012-01-01

    Full Text Available In a software factory, the applications are developed in the same way Henri Ford started manufacturing cars. In such a way, a customized solution could be obtained within a reasonable budget and within the foreseen timeframe. This development method offers a flexible solution that can be readapted rapidly and automatically to the changing business needs, so the Project Management becomes a real challenge.

  2. CERN software developers gathering in September

    CERN Multimedia

    Antonella Del Rosso

    2015-01-01

    Hundreds of developers work on many different projects at CERN – from data analysis to beam operations and administrative applications. As of this September, they will have an opportunity to meet each other at the newly established Developers@CERN Forum.   “We go to conferences elsewhere but we hardly ever meet here at CERN, where we all work on our own separate software projects,” says José Carlos Luna, a member of the IT department and one of the organisers of the first Developers@CERN Forum. Indeed, although several CERN departments have software developers working in their teams, there is no proper “community” built around them. The first Developers@CERN Forum will be held on 28 and 29 September. The event is being organised by a few developers from the IT department, together with colleagues from the GS and EN departments. Its main scope is to reach out to all the departments in an effort to bring all CERN’s software dev...

  3. The laws of software process a new model for the production and management of software

    CERN Document Server

    Armour, Phillip G

    2003-01-01

    The Nature of Software and The Laws of Software ProcessA Brief History of KnowledgeThe Characteristics of Knowledge Storage MediaThe Nature of Software DevelopmentThe Laws of Software Process and the Five Orders of IgnoranceThe Laws of Software ProcessThe First Law of Software ProcessThe Corollary to the First Law of Software ProcessThe Reflexive Creation of Systems and ProcessesThe Lemma of Eternal LatenessThe Second Law of Software ProcessThe Rule of Process BifurcationThe Dual Hypotheses of Knowledge DiscoveryArmour's Observation on Software ProcessThe Third Law of Software Process (also kn

  4. Autonomous Aerobraking Development Software: Phase 2 Summary

    Science.gov (United States)

    Cianciolo, Alicia D.; Maddock, Robert W.; Prince, Jill L.; Bowes, Angela; Powell, Richard W.; White, Joseph P.; Tolson, Robert; O'Shaughnessy, Daniel; Carrelli, David

    2013-01-01

    NASA has used aerobraking at Mars and Venus to reduce the fuel required to deliver a spacecraft into a desired orbit compared to an all-propulsive solution. Although aerobraking reduces the propellant, it does so at the expense of mission duration, large staff, and DSN coverage. These factors make aerobraking a significant cost element in the mission design. By moving on-board the current ground-based tasks of ephemeris determination, atmospheric density estimation, and maneuver sizing and execution, a flight project would realize significant cost savings. The NASA Engineering and Safety Center (NESC) sponsored Phase 1 and 2 of the Autonomous Aerobraking Development Software (AADS) study, which demonstrated the initial feasibility of moving these current ground-based functions to the spacecraft. This paper highlights key state-of-the-art advancements made in the Phase 2 effort to verify that the AADS algorithms are accurate, robust and ready to be considered for application on future missions that utilize aerobraking. The advancements discussed herein include both model updates and simulation and benchmark testing. Rigorous testing using observed flight atmospheres, operational environments and statistical analysis characterized the AADS operability in a perturbed environment.

  5. The effect of team dynamics on software development process improvement

    OpenAIRE

    O'Connor, Rory V.; Basri, Shuib

    2012-01-01

    peer-reviewed This article identifies the effect of team dynamics in the context of software development teams and its impact on software process improvement (SPI) activities in very small companies, in order to understand the relationship between these two variables. Most software development work is done by teams of software engineers working together in a collaborative manner to execute a software development process. Although there is much literature examining software proc...

  6. Software metrics: The quantitative impact of four factors on work rates experienced during software development. [reliability engineering

    Science.gov (United States)

    Gaffney, J. E., Jr.; Judge, R. W.

    1981-01-01

    A model of a software development process is described. The software development process is seen to consist of a sequence of activities, such as 'program design' and 'module development' (or coding). A manpower estimate is made by multiplying code size by the rates (man months per thousand lines of code) for each of the activities relevant to the particular case of interest and summing up the results. The effect of four objectively determinable factors (organization, software product type, computer type, and code type) on productivity values for each of nine principal software development activities was assessed. Four factors were identified which account for 39% of the observed productivity variation.

  7. Developing software is not an easy matter

    Directory of Open Access Journals (Sweden)

    Tina Cardrige

    2014-12-01

    Full Text Available Why is it so difficult to learn to develop software? This question has been trying to answer for a long time, but has not yet found a solution to this issue. Moreover, it tends to confuse development with programming, and this also creates problems to elucidate the question. In an era in which urgently required improve the quality, and reliability, and safety of software it becomes urgent to potentiate or develop skills and abilities in professionals to meet these needs. But students are not interested in making careers involving these concepts, they prefer other less demanding and easier to achieve a certification. This article attempts to answer the question and present some suggestions for overcoming this difficulty.

  8. Requisite Information Collaboration and Distributed Knowledge Management in Software Development

    DEFF Research Database (Denmark)

    Petersen, Mogens K.; Bjørn, Pernille; Frank, L.

    The paper suggests a framework advocating an integrated approach to software development stipulating the interconnection between Design, Organization and Business value networks (DOB). These three focus areas span collaborative development processes applying a range of facilitating tools, including...... distributed knowledge management product state models. The paper draws upon a series of discussion with Scandinavian IT Group (SIG). With an interest in how performance in their new organization develops SIG invited the research group to study measures of organizational performance and the use and effect...... of knowledge management tools in software development. The paper does not represent the viewpoint of SIG but outline our framework and major research questions....

  9. SOFTWARE SOLUTIONS FOR ARDL MODELS

    Directory of Open Access Journals (Sweden)

    Nicolae-Marius JULA

    2015-07-01

    Full Text Available VAR type models can be used only for stationary time series. Causality analyses through econometric models need that series to have the same integrated order. Usually, when constraining the series to comply these restrictions (e.g. by differentiating, economic interpretation of the outcomes may become difficult. Recent solution for mitigating these problems is the use of ARDL (autoregressive distributed lag models. We present implementation in E-Views of these models and we test the impact of exchange rate on consumer price index.

  10. Formal, Model-oriented Software Development Methods - From VDM to ProCoS & from RAISE to LaCoS

    DEFF Research Database (Denmark)

    Bjørner, Dines; Haxthausen, Anne Elisabeth; Havelund, K.

    1991-01-01

    the technical/scientific essence of the VDM and RAISE methods, and explain the ProCos and LaCoS project structures. The paper will first outline five central roles of software developers: problem domain specialists, programmers, software engineers, resident computation scientists and managers. We will briefly...

  11. A Software Reliability Model Using Quantile Function

    Directory of Open Access Journals (Sweden)

    Bijamma Thomas

    2014-01-01

    Full Text Available We study a class of software reliability models using quantile function. Various distributional properties of the class of distributions are studied. We also discuss the reliability characteristics of the class of distributions. Inference procedures on parameters of the model based on L-moments are studied. We apply the proposed model to a real data set.

  12. Chaste: using agile programming techniques to develop computational biology software.

    Science.gov (United States)

    Pitt-Francis, Joe; Bernabeu, Miguel O; Cooper, Jonathan; Garny, Alan; Momtahan, Lee; Osborne, James; Pathmanathan, Pras; Rodriguez, Blanca; Whiteley, Jonathan P; Gavaghan, David J

    2008-09-13

    Cardiac modelling is the area of physiome modelling where the available simulation software is perhaps most mature, and it therefore provides an excellent starting point for considering the software requirements for the wider physiome community. In this paper, we will begin by introducing some of the most advanced existing software packages for simulating cardiac electrical activity. We consider the software development methods used in producing codes of this type, and discuss their use of numerical algorithms, relative computational efficiency, usability, robustness and extensibility. We then go on to describe a class of software development methodologies known as test-driven agile methods and argue that such methods are more suitable for scientific software development than the traditional academic approaches. A case study is a project of our own, Cancer, Heart and Soft Tissue Environment, which is a library of computational biology software that began as an experiment in the use of agile programming methods. We present our experiences with a review of our progress thus far, focusing on the advantages and disadvantages of this new approach compared with the development methods used in some existing packages. We conclude by considering whether the likely wider needs of the cardiac modelling community are currently being met and suggest that, in order to respond effectively to changing requirements, it is essential that these codes should be more malleable. Such codes will allow for reliable extensions to include both detailed mathematical models--of the heart and other organs--and more efficient numerical techniques that are currently being developed by many research groups worldwide.

  13. Documenting the decision structure in software development

    Science.gov (United States)

    Wild, J. Christian; Maly, Kurt; Shen, Stewart N.

    1990-01-01

    Current software development paradigms focus on the products of the development process. Much of the decision making process which produces these products is outside the scope of these paradigms. The Decision-Based Software Development (DBSD) paradigm views the design process as a series of interrelated decisions which involve the identification and articulation of problems, alternates, solutions and justifications. Decisions made by programmers and analysts are recorded in a project data base. Unresolved problems are also recorded and resources for their resolution are allocated by management according to the overall development strategy. This decision structure is linked to the products affected by the relevant decision and provides a process oriented view of the resulted system. Software maintenance uses this decision view of the system to understand the rationale behind the decisions affecting the part of the system to be modified. D-HyperCase, a prototype Decision-Based Hypermedia System is described and results of applying the DBSD approach during its development are presented.

  14. Embracing Open Software Development in Solar Physics

    Science.gov (United States)

    Hughitt, V. K.; Ireland, J.; Christe, S.; Mueller, D.

    2012-12-01

    We discuss two ongoing software projects in solar physics that have adopted best practices of the open source software community. The first, the Helioviewer Project, is a powerful data visualization tool which includes online and Java interfaces inspired by Google Maps (tm). This effort allows users to find solar features and events of interest, and download the corresponding data. Having found data of interest, the user now has to analyze it. The dominant solar data analysis platform is an open-source library called SolarSoft (SSW). Although SSW itself is open-source, the programming language used is IDL, a proprietary language with licensing costs that are prohibative for many institutions and individuals. SSW is composed of a collection of related scripts written by missions and individuals for solar data processing and analysis, without any consistent data structures or common interfaces. Further, at the time when SSW was initially developed, many of the best software development processes of today (mirrored and distributed version control, unit testing, continuous integration, etc.) were not standard, and have not since been adopted. The challenges inherent in developing SolarSoft led to a second software project known as SunPy. SunPy is an open-source Python-based library which seeks to create a unified solar data analysis environment including a number of core datatypes such as Maps, Lightcurves, and Spectra which have consistent interfaces and behaviors. By taking advantage of the large and sophisticated body of scientific software already available in Python (e.g. SciPy, NumPy, Matplotlib), and by adopting many of the best practices refined in open-source software development, SunPy has been able to develop at a very rapid pace while still ensuring a high level of reliability. The Helioviewer Project and SunPy represent two pioneering technologies in solar physics - simple yet flexible data visualization and a powerful, new data analysis environment. We

  15. Everything a medical innovator needs to know about developing software

    Directory of Open Access Journals (Sweden)

    Marcus Holmes

    2013-01-01

    Full Text Available Software development is hard enough for specialist software companies to get right. For people outside the industry it can be a minefield full of hidden surprises. This articles hopes to explain why software development is so hard, how to go about approaching a software development project, and how to get the best out of any collaboration with a development team. It should be read by anyone who is considering developing a software product, including websites, from a non-development.

  16. A Censored Nonparametric Software Reliability Model

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    This paper analyses the effct of censoring on the estimation of failure rate, and presents a framework of a censored nonparametric software reliability model. The model is based on nonparametric testing of failure rate monotonically decreasing and weighted kernel failure rate estimation under the constraint of failure rate monotonically decreasing. Not only does the model have the advantages of little assumptions and weak constraints, but also the residual defects number of the software system can be estimated. The numerical experiment and real data analysis show that the model performs well with censored data.

  17. Software exporting: a developing country advantage

    Directory of Open Access Journals (Sweden)

    Hossein Askari

    2003-03-01

    Full Text Available Software exports have the potential to make a significant contribution to the economies of developing countries and to the global IT industry. Developing countries have demonstrated a comparative advantage in this export sector and the global IT industry can benefit from this developing country advantage. Today, IT is high investment, high risk, and high reward and has graduated from being a critical support function to a key partner, sometimes responsible for directing the strategy of an enterprise. Business and technology managers cannot afford to miss the opportunities provided by the comparative advantage of developing countries in the IT arena.

  18. Implementation and Simulation Results using Autonomous Aerobraking Development Software

    Science.gov (United States)

    Maddock, Robert W.; DwyerCianciolo, Alicia M.; Bowes, Angela; Prince, Jill L. H.; Powell, Richard W.

    2011-01-01

    An Autonomous Aerobraking software system is currently under development with support from the NASA Engineering and Safety Center (NESC) that would move typically ground-based operations functions to onboard an aerobraking spacecraft, reducing mission risk and mission cost. The suite of software that will enable autonomous aerobraking is the Autonomous Aerobraking Development Software (AADS) and consists of an ephemeris model, onboard atmosphere estimator, temperature and loads prediction, and a maneuver calculation. The software calculates the maneuver time, magnitude and direction commands to maintain the spacecraft periapsis parameters within design structural load and/or thermal constraints. The AADS is currently tested in simulations at Mars, with plans to also evaluate feasibility and performance at Venus and Titan.

  19. Ethics and Morality in Software Development: A Developer's Perspective

    Science.gov (United States)

    Stephenson, James H.

    2010-01-01

    Computers and other digital devices have become ubiquitous in our lives. Almost all aspects of our lives are in part or wholly impacted by computers and the software that runs on them. Unknowingly, we are placing our livelihoods and even our lives in the hands unknown software developers. Ethical and moral decisions made during software…

  20. Ethics and Morality in Software Development: A Developer's Perspective

    Science.gov (United States)

    Stephenson, James H.

    2010-01-01

    Computers and other digital devices have become ubiquitous in our lives. Almost all aspects of our lives are in part or wholly impacted by computers and the software that runs on them. Unknowingly, we are placing our livelihoods and even our lives in the hands unknown software developers. Ethical and moral decisions made during software…

  1. Remote Software Application and Display Development

    Science.gov (United States)

    Sanders, Brandon T.

    2014-01-01

    The era of the shuttle program has come to an end, but only to give rise to newer and more exciting projects. Now is the time of the Orion spacecraft, a work of art designed to exceed all previous endeavors of man. NASA is exiting the time of exploration and is entering a new period, a period of pioneering. With this new mission, many of NASAs organizations must undergo a great deal of change and development to support the Orion missions. The Spaceport Command and Control System (SCCS) is the new system that will provide NASA the ability to launch rockets into orbit and thus control Orion and other spacecraft as the goal of populating Mars becomes ever increasingly tangible. Since the previous control system, Launch Processing System (LPS), was primarily designed to launch the shuttles, SCCS was needed as Kennedy Space Center (KSC) reorganized to a multiuser spaceport for commercial flights, providing a more versatile control over rockets. Within SCCS, is the Launch Control System (LCS), which is the remote software behind the command and monitoring of flight and ground system hardware. This internship at KSC has involved two main components in LCS, including Remote Software Application and Display development. The display environment provides a graphical user interface for an operator to view and see if any cautions are raised, while the remote applications are the backbone that communicate with hardware, and then relay the data back to the displays. These elements go hand in hand as they provide monitoring and control over hardware and software alike from the safety of the Launch Control Center. The remote software applications are written in Application Control Language (ACL), which must undergo unit testing to ensure data integrity. This paper describes both the implementation and writing of unit tests in ACL code for remote software applications, as well as the building of remote displays to be used in the Launch Control Center (LCC).

  2. Software Quality in the Objectory Software Development Process

    NARCIS (Netherlands)

    van den Berg, Klaas; Demeyer, S.; Bosch, J.

    In this paper we discuss how software quality assurance is realized in Rational Objectory. Although much support is given through guidelines and checkpoints, the tool fails to provide clear goals and metrics for quality assessments and it only partially supports the phases in a measurement program.

  3. Software Quality in the Objectory Software Development Process

    OpenAIRE

    van den Berg, Klaas; Demeyer, S.; Bosch, J.

    1998-01-01

    In this paper we discuss how software quality assurance is realized in Rational Objectory. Although much support is given through guidelines and checkpoints, the tool fails to provide clear goals and metrics for quality assessments and it only partially supports the phases in a measurement program.

  4. Software Quality Perceptions of Stakeholders Involved in the Software Development Process

    Science.gov (United States)

    Padmanabhan, Priya

    2013-01-01

    Software quality is one of the primary determinants of project management success. Stakeholders involved in software development widely agree that quality is important (Barney and Wohlin 2009). However, they may differ on what constitutes software quality, and which of its attributes are more important than others. Although, software quality…

  5. Software Quality Perceptions of Stakeholders Involved in the Software Development Process

    Science.gov (United States)

    Padmanabhan, Priya

    2013-01-01

    Software quality is one of the primary determinants of project management success. Stakeholders involved in software development widely agree that quality is important (Barney and Wohlin 2009). However, they may differ on what constitutes software quality, and which of its attributes are more important than others. Although, software quality…

  6. Eclipse plugins for LHCb software development

    CERN Document Server

    Astruc, Gregoire

    2011-01-01

    CERN LHCb Offline team, working on experiments around the LHC particle collider, had a number of tools to assist developers. LHCb projects use a domain-specific structure. Tools are always evolving and some team members started to look for ways to integrate those programs (most of them being CLIs) into more recent programming software like the Eclipse IDE. During this internship, a set of Eclipse plugins was created. They link the LHCb projects concepts to the ones in the IDE.

  7. A Model for Crises Management in Software Projects

    Directory of Open Access Journals (Sweden)

    Mohammad Tarawneh

    2011-11-01

    Full Text Available Today software projects are important part into almost every business application. It is quality, efficiency and effectiveness of these applications will determine the failure or success of many business solutions. Consequently, businesses often find that they need to have a competitive and efficient advantage through the development and improve of software projects that help critical business activities. The quality of a software project is determined by the quality of the software development process. Improvements in the development process can lead to significant improvement in software quality. Based on the foregoing risks and problems which may be software engineering project faced, we try to shed light on the mechanism of dealing with crises in software engineering projects in this research. This research suggests a set of rules and guidelines that help software project mangers to prevent and dealing with software project crises Also a model was proposed; the proposed model showed a set of steps that must be implemented in case of crises emerging or before it happen. The crisis management starts understanding it first and then to prepare a careful review of her as she is looking for regions or aspects of the turmoil and failures. The next step is the classification of crisis, then the preparation or design a plan attitudinal or contingency plan, which must be implemented immediately upon the occurrence of crisis. Finally, the final element is the implementation of the program or plan established soon after the crisis and it should be noted here that the project team of software engineering that have been trained on the virtual models of various crises, which helps in the development of managed, skills, and also that you should avoid or ignore the failure to acknowledge a problem when Start or try to be underestimated or taken lightly.

  8. Software Development and Feedback from Usability Evaluations

    DEFF Research Database (Denmark)

    Høegh, Rune Thaarup

    2008-01-01

    This paper presents a study of the strengths and weaknesses of written, multimedia and oral feedback from usability evaluations to developers. The strengths and weaknesses are related to how well the feedback supports the developers in addressing usability problems in a software system. The study...... of information, while still not offering the required information to address usability problems. Other forms of feedback, such as oral or multimedia feedback helps the developer in understanding the usability problems better, but are on the other hand less cost-effective than a written description....

  9. Math Description Engine Software Development Kit

    Science.gov (United States)

    Shelton, Robert O.; Smith, Stephanie L.; Dexter, Dan E.; Hodgson, Terry R.

    2010-01-01

    The Math Description Engine Software Development Kit (MDE SDK) can be used by software developers to make computer-rendered graphs more accessible to blind and visually-impaired users. The MDE SDK generates alternative graph descriptions in two forms: textual descriptions and non-verbal sound renderings, or sonification. It also enables display of an animated trace of a graph sonification on a visual graph component, with color and line-thickness options for users having low vision or color-related impairments. A set of accessible graphical user interface widgets is provided for operation by end users and for control of accessible graph displays. Version 1.0 of the MDE SDK generates text descriptions for 2D graphs commonly seen in math and science curriculum (and practice). The mathematically rich text descriptions can also serve as a virtual math and science assistant for blind and sighted users, making graphs more accessible for everyone. The MDE SDK has a simple application programming interface (API) that makes it easy for programmers and Web-site developers to make graphs accessible with just a few lines of code. The source code is written in Java for cross-platform compatibility and to take advantage of Java s built-in support for building accessible software application interfaces. Compiled-library and NASA Open Source versions are available with API documentation and Programmer s Guide at http:/ / prim e.jsc.n asa. gov.

  10. Aspect-Oriented Model-Driven Software Product Line Engineering

    Science.gov (United States)

    Groher, Iris; Voelter, Markus

    Software product line engineering aims to reduce development time, effort, cost, and complexity by taking advantage of the commonality within a portfolio of similar products. The effectiveness of a software product line approach directly depends on how well feature variability within the portfolio is implemented and managed throughout the development lifecycle, from early analysis through maintenance and evolution. This article presents an approach that facilitates variability implementation, management, and tracing by integrating model-driven and aspect-oriented software development. Features are separated in models and composed of aspect-oriented composition techniques on model level. Model transformations support the transition from problem to solution space models. Aspect-oriented techniques enable the explicit expression and modularization of variability on model, template, and code level. The presented concepts are illustrated with a case study of a home automation system.

  11. Computer-Aided Software Engineering - An approach to real-time software development

    Science.gov (United States)

    Walker, Carrie K.; Turkovich, John J.

    1989-01-01

    A new software engineering discipline is Computer-Aided Software Engineering (CASE), a technology aimed at automating the software development process. This paper explores the development of CASE technology, particularly in the area of real-time/scientific/engineering software, and a history of CASE is given. The proposed software development environment for the Advanced Launch System (ALS CASE) is described as an example of an advanced software development system for real-time/scientific/engineering (RT/SE) software. The Automated Programming Subsystem of ALS CASE automatically generates executable code and corresponding documentation from a suitably formatted specification of the software requirements. Software requirements are interactively specified in the form of engineering block diagrams. Several demonstrations of the Automated Programming Subsystem are discussed.

  12. USER STORY SOFTWARE ESTIMATION:A SIMPLIFICATION OF SOFTWARE ESTIMATION MODEL WITH DISTRIBUTED EXTREME PROGRAMMING ESTIMATION TECHNIQUE

    Directory of Open Access Journals (Sweden)

    Ridi Ferdiana

    2011-01-01

    Full Text Available Software estimation is an area of software engineering concerned with the identification, classification and measurement of features of software that affect the cost of developing and sustaining computer programs [19]. Measuring the software through software estimation has purpose to know the complexity of the software, estimate the human resources, and get better visibility of execution and process model. There is a lot of software estimation that work sufficiently in certain conditions or step in software engineering for example measuring line of codes, function point, COCOMO, or use case points. This paper proposes another estimation technique called Distributed eXtreme Programming Estimation (DXP Estimation. DXP estimation provides a basic technique for the team that using eXtreme Programming method in onsite or distributed development. According to writer knowledge this is a first estimation technique that applied into agile method in eXtreme Programming.

  13. Software Development Outsourcing Decision Support Tool with Neural Network Learning

    Science.gov (United States)

    2004-03-01

    software domain, enterprise scripting software domain, and outsourcing ( maintenance and training) processes found to be included in the new model but not in...accounting and order entry) software domains, and outsourcing ( maintenance , configuration management and software engineer support) processes were...found in the original model but not in the new model included: enterprise (scripting and order entry) software domains and outsourcing maintenance process

  14. dMODELS: A software package for modeling volcanic deformation

    Science.gov (United States)

    Battaglia, Maurizio

    2017-04-01

    dMODELS is a software package that includes the most common source models used to interpret deformation measurements near active volcanic centers. The emphasis is on estimating the parameters of analytical models of deformation by inverting data from the Global Positioning System (GPS), Interferometric Synthetic Aperture Radar (InSAR), tiltmeters and strainmeters. Source models include: (a) pressurized spherical, ellipsoidal and sill-like magma chambers in an elastic, homogeneous, flat half-space; (b) pressurized spherical magma chambers with topography corrections; and (c) the solutions for a dislocation (fracture) in an elastic, homogeneous, flat half-space. All of the equations have been extended to include deformation and strain within the Earth's crust (as opposed to only at the Earth's surface) and verified against finite element models. Although actual volcanic sources are not embedded cavities of simple shape, we assume that these models may reproduce the stress field created by the actual magma intrusion or hydrothermal fluid injection. The dMODELS software employs a nonlinear inversion algorithm to determine the best-fit parameters for the deformation source by searching for the minimum of the cost function χv2 (chi square per degrees of freedom). The non-linear inversion algorithm is a combination of local optimization (interior-point method) and random search. This approach is more efficient for hyper-parameter optimization than trials on a grid. The software has been developed using MATLAB, but compiled versions that can be run using the free MATLAB Compiler Runtime (MCR) module are available for Windows 64-bit operating systems. The MATLAB scripts and compiled files are open source and intended for teaching and research. The software package includes both functions for forward modeling and scripts for data inversion. A software demonstration will be available during the meeting. You are welcome to contact the author at mbattaglia@usgs.gov for

  15. Contract-oriented software development for internet services

    DEFF Research Database (Denmark)

    Giambiagi, Pablo; Owe, Olaf; Ravn, Anders Peter

    2008-01-01

    COSoDIS (Contract-Oriented Software Development for Internet Services) develops novel approaches to implement and reason about contracts in service oriented architectures (SOA). The rationale is that system developers benefit from abstraction mechanisms to work with these architectures. Therefore...... the goal is to design and test system modeling and programming language tools to empower SOA developers to deploy highly dynamic, negotiable and monitorable Internet services....

  16. Contract-oriented software development for internet services

    DEFF Research Database (Denmark)

    Giambiagi, Pablo; Owe, Olaf; Ravn, Anders Peter

    2008-01-01

    COSoDIS (Contract-Oriented Software Development for Internet Services) develops novel approaches to implement and reason about contracts in service oriented architectures (SOA). The rationale is that system developers benefit from abstraction mechanisms to work with these architectures. Therefore...... the goal is to design and test system modeling and programming language tools to empower SOA developers to deploy highly dynamic, negotiable and monitorable Internet services....

  17. Software project management tools in global software development: a systematic mapping study.

    Science.gov (United States)

    Chadli, Saad Yasser; Idri, Ali; Ros, Joaquín Nicolás; Fernández-Alemán, José Luis; de Gea, Juan M Carrillo; Toval, Ambrosio

    2016-01-01

    Global software development (GSD) which is a growing trend in the software industry is characterized by a highly distributed environment. Performing software project management (SPM) in such conditions implies the need to overcome new limitations resulting from cultural, temporal and geographic separation. The aim of this research is to discover and classify the various tools mentioned in literature that provide GSD project managers with support and to identify in what way they support group interaction. A systematic mapping study has been performed by means of automatic searches in five sources. We have then synthesized the data extracted and presented the results of this study. A total of 102 tools were identified as being used in SPM activities in GSD. We have classified these tools, according to the software life cycle process on which they focus and how they support the 3C collaboration model (communication, coordination and cooperation). The majority of the tools found are standalone tools (77%). A small number of platforms (8%) also offer a set of interacting tools that cover the software development lifecycle. Results also indicate that SPM areas in GSD are not adequately supported by corresponding tools and deserve more attention from tool builders.

  18. Invention software support by integrating function and mathematical modeling

    NARCIS (Netherlands)

    Chechurin, L.S.; Wits, Wessel Willems; Bakker, H.M.

    2015-01-01

    New idea generation is imperative for successful product innovation and technology development. This paper presents the development of a novel type of invention support software. The support tool integrates both function modeling and mathematical modeling, thereby enabling quantitative analyses on a

  19. Invention software support by integrating function and mathematical modeling

    NARCIS (Netherlands)

    Chechurin, L.S.; Wits, W.W.; Bakker, H.M.

    2015-01-01

    New idea generation is imperative for successful product innovation and technology development. This paper presents the development of a novel type of invention support software. The support tool integrates both function modeling and mathematical modeling, thereby enabling quantitative analyses on a

  20. inventory management, VMI, software agents, MDV model

    Directory of Open Access Journals (Sweden)

    Waldemar Wieczerzycki

    2012-03-01

    Full Text Available Background: As it is well know, the implementation of instruments of logistics management is only possible with the use of the latest information technology. So-called agent technology is one of the most promising solutions in this area. Its essence consists in an entirely new way of software distribution on the computer network platform, in which computer exchange among themselves not only data, but also software modules, called just agents. The first aim is to propose the alternative method of the implementation of the concept of the inventory management by the supplier with the use of intelligent software agents, which are able not only to transfer the information but also to make the autonomous decisions based on the privileges given to them. The second aim of this research was to propose a new model of a software agent, which will be both of a high mobility and a high intelligence. Methods: After a brief discussion of the nature of agent technology, the most important benefits of using it to build platforms to support business are given. Then the original model of polymorphic software agent, called Multi-Dimensionally Versioned Software Agent (MDV is presented, which is oriented on the specificity of IT applications in business. MDV agent is polymorphic, which allows the transmission through the network only the most relevant parts of its code, and only when necessary. Consequently, the network nodes exchange small amounts of software code, which ensures high mobility of software agents, and thus highly efficient operation of IT platforms built on the proposed model. Next, the adaptation of MDV software agents to implementation of well-known logistics management instrument - VMI (Vendor Managed Inventory is illustrated. Results: The key benefits of this approach are identified, among which one can distinguish: reduced costs, higher flexibility and efficiency, new functionality - especially addressed to business negotiation, full automation

  1. Appliance of software engineering in development of nuclear power plant

    Energy Technology Data Exchange (ETDEWEB)

    Baek, Y. W.; Kim, H. C.; Yun, C. [Chungnam National Univ., Taejon (Korea, Republic of); Kim, B. R. [KINS, Taejon (Korea, Republic of)

    1999-10-01

    Application of computer technology in nuclear power plant is also a necessary transformation as in other industry fields. But until now, application of software technology was not wide-spread because of its potential effect to safety in nuclear field. It is an urgent theme to develop evaluation guide and regulation techniques to guarantee safety, reliability and quality assurance. To meet these changes, techniques for development and operation should be enhanced to ensure the quality of software systems. In this study, we show the difference between waterfall model and software life-cycle needed in development of nuclear power plant and propose the consistent framework needed in development of instrumentation and control system of nuclear power plant.

  2. How To Improve Software Quality Assurance In Developing Countries

    Directory of Open Access Journals (Sweden)

    Ali Javed

    2012-04-01

    Full Text Available Quality is an important factor in software industry. Software quality depends upon the customer satisfaction which can be achieved through applying standards. In this era achieving quality software is very important because of the high customer demands. Developed countries are excelling in software industry and improving day by day. Meanwhile developing countries like Pakistan are struggling with software quality and cannot maintain reputation in International Market. Software Quality lacks due tomany reasons. This paper will address the problems for lacking interest in improving the software quality by higher authorities and software assurance team. We have provided solution to the addressed problems also.

  3. Integrative Educational Approach Oriented Towards Software and System Development

    Directory of Open Access Journals (Sweden)

    Anca Juliana Stoica

    2013-01-01

    Full Text Available The paper is based on our academic teaching and research work in software and system engineering to effectively develop modern, complex real-life Web application systems. It bridges the gap between academic education and industry needs and illustrates how such collaboration can be successfully developed in the IT area where technology development is rapid. Its scope covers the processes, models, technologies, people, and knowledge that have the capability to contribute to developing such systems. The paper also relates to contributions of some of Harlan D. Mills award recipients for software engineering achievement, to address the needs to: i improve the engineering education in an academic setting, and ii develop real-life software and system projects. Hybrid educational methods are applied for student learning that combine class room approach of teaching fundamental theoretical concepts and practice via real world complex projects embedding intelligence in software and systems products. System thinking demanded by modern design philosophies is applied to interlink prod-ucts, software, and people. Student groups are developing their projects in an interactive and collaborative manner.

  4. Software Platform Evaluation - Verifiable Fuel Cycle Simulation (VISION) Model

    Energy Technology Data Exchange (ETDEWEB)

    J. J. Jacobson; D. E. Shropshire; W. B. West

    2005-11-01

    The purpose of this Software Platform Evaluation (SPE) is to document the top-level evaluation of potential software platforms on which to construct a simulation model that satisfies the requirements for a Verifiable Fuel Cycle Simulation Model (VISION) of the Advanced Fuel Cycle (AFC). See the Software Requirements Specification for Verifiable Fuel Cycle Simulation (VISION) Model (INEEL/EXT-05-02643, Rev. 0) for a discussion of the objective and scope of the VISION model. VISION is intended to serve as a broad systems analysis and study tool applicable to work conducted as part of the AFCI (including costs estimates) and Generation IV reactor development studies. This document will serve as a guide for selecting the most appropriate software platform for VISION. This is a “living document” that will be modified over the course of the execution of this work.

  5. $artdaq$: DAQ Software Development Made Simple

    Energy Technology Data Exchange (ETDEWEB)

    Biery, Kurt [Fermilab; Flumerfelt, Eric [Fermilab; Freeman, John [Fermilab; Ketchum Wesley, Ketchum Wesley [Fermilab; Lukhanin, Gennadiy [Fermilab; Rechenmacher, Ron [Fermilab

    1900-01-01

    For a few years now, the artdaq data acquisition software toolkit has provided numerous experiments with ready-to-use components which allow for rapid development and deployment of DAQ systems. Developed within the Fermilab Scientic Computing Division, artdaq provides data transfer, event building, run control, and event analysis functionality. This latter feature includes built-in support for the art event analysis framework, allowing experiments to run art modules for real-time ltering, compression, disk writing and online monitoring; as art, also developed at Fermilab, is also used for oine analysis, a major advantage of artdaq is that it allows developers to easily switch between developing online and oine software. artdaq continues to be improved. Support for an alternate mode of running whereby data from some subdetector components are only streamed if requested has been added; this option will reduce unnecessary DAQ throughput. Real-time reporting of DAQ metrics has been implemented, along with the exibility to choose the format through which experiments receive the reports; these formats include the Ganglia, Graphite and syslog software packages, along with at ASCII les. Additionally, work has been performed investigating more exible modes of online monitoring, including the capability of being able to run multiple online monitoring processes on dierent hosts, each running its own set of art modules. Finally, a web-based GUI interface through which users can congure details of their DAQ system has been implemented, increasing the ease of use of the system. Already successfully deployed on the LArIAT, DarkSide-50, DUNE 35ton and Mu2e experiments, artdaq will be employed for SBND and is a strong candidate for use on ICARUS and protoDUNE. With each experiment comes new ideas for how artdaq can be made more exible and powerful; the above improvements will be described, along with potential ideas for the future. 1.

  6. The Effects of Development Team Skill on Software Product Quality

    Science.gov (United States)

    Beaver, Justin M.; Schiavone, Guy A.

    2006-01-01

    This paper provides an analysis of the effect of the skill/experience of the software development team on the quality of the final software product. A method for the assessment of software development team skill and experience is proposed, and was derived from a workforce management tool currently in use by the National Aeronautics and Space Administration. Using data from 26 smallscale software development projects, the team skill measures are correlated to 5 software product quality metrics from the ISO/IEC 9126 Software Engineering Product Quality standard. in the analysis of the results, development team skill is found to be a significant factor in the adequacy of the design and implementation. In addition, the results imply that inexperienced software developers are tasked with responsibilities ill-suited to their skill level, and thus have a significant adverse effect on the quality of the software product. Keywords: software quality, development skill, software metrics

  7. Strategic Dimensions of Software Development in a Supply Chain

    NARCIS (Netherlands)

    Kruithof, G. H.; Meijler, T. D.; Barry, C; Conboy, K; Lang, M; Wojtkowski, G; Wojtkowski, W

    2009-01-01

    This chapter explores the relationship between characteristics of a software market and strategic management of software development in a supply chain. The typical characteristics of software markets and software supply chains are described. A decision framework is developed which connects specific

  8. Constructing an advanced software tool for planetary atmospheric modeling

    Science.gov (United States)

    Keller, Richard M.; Sims, Michael; Podolak, Ester; Mckay, Christopher

    1990-01-01

    Scientific model building can be an intensive and painstaking process, often involving the development of large and complex computer programs. Despite the effort involved, scientific models cannot be easily distributed and shared with other scientists. In general, implemented scientific models are complex, idiosyncratic, and difficult for anyone but the original scientist/programmer to understand. We believe that advanced software techniques can facilitate both the model building and model sharing process. In this paper, we describe a prototype for a scientific modeling software tool that serves as an aid to the scientist in developing and using models. This tool includes an interactive intelligent graphical interface, a high level domain specific modeling language, a library of physics equations and experimental datasets, and a suite of data display facilities. Our prototype has been developed in the domain of planetary atmospheric modeling, and is being used to construct models of Titan's atmosphere.

  9. Software process improvement: controlling developers, managers or users?

    DEFF Research Database (Denmark)

    Nørbjerg, Jacob

    1999-01-01

    The paper discusses how the latest trend in the management of software development: software process improvement (SPI) may affect user-developer relations. At the outset, SPI concerns the "internal workings" of software organisations, but it may also be interpreted as one way to give the develope...... organisation more control over the development process and the relations with the user organization.......The paper discusses how the latest trend in the management of software development: software process improvement (SPI) may affect user-developer relations. At the outset, SPI concerns the "internal workings" of software organisations, but it may also be interpreted as one way to give the developer...

  10. A Posteriori Integration of University CAPE Software Developments

    DEFF Research Database (Denmark)

    Tolksdorf, Gregor; Fillinger, Sandra; Wozny, Guenter

    2015-01-01

    This contribution deals with the mutual integration of existing CAPE software products developed at different universities in Germany, Denmark, and Italy. After the motivation MOSAIC is presented as the bridge building the connection between the modelling tool ICAS-MoT and the numerical processin...

  11. Towards an Interoperability Ontology for Software Development Tools

    Science.gov (United States)

    2003-03-01

    The description of feature models was tied to the introduction of the Feature-Oriented Domain Analysis ( FODA *) [KANG90] approach in the late eighties...Feature-oriented domain analysis ( FODA ) is a domain analysis method developed at the Software...was introduced in FODA (features are typically arranged in a hierarchical structure that spans a tree) by adding some additional information, such

  12. Application of Process Modeling in a Software- Engineering Course

    Directory of Open Access Journals (Sweden)

    Gabriel Alberto García Mireles

    2001-11-01

    Full Text Available Coordination in a software development project is a critical issue in delivering a successful software product, within the constraints of time, functionality and budget agreed upon with the customer. One of the strategies for approaching this problem consists in the use of process modeling to document, evaluate, and redesign the software development process. The appraisal of the projects done in the Engineering and Methodology course of a program given at the Ensenada Center of Scientific Research and Higher Education (CICESE, from a process perspective, facilitated the identification of strengths and weaknesses in the development process used. This paper presents the evaluation of the practical portion of the course, the improvements made, and the preliminary results of using the process approach in the analysis phase of a software-development project.

  13. Softwares Product Lines, Global Development and Ecosystems: Collaboration in Software Engineering

    Science.gov (United States)

    Bosch, Jan; Bosch-Sijtsema, Petra M.

    Effective collaboration in software engineering is very important and yet increasingly complicated by trends that increase complexity of dependencies between software development teams and organizations. These trends include the increasing adoption of software product lines, the globalization of software engineering and the increasing use of and reliance on 3rd party developers in the context of software ecosystems. Based on action research, the paper discusses problems of in effective collaboration and success-factors of five approaches to collaboration in large-scale software engineering.

  14. Quality Assurance in Software Development: An Exploratory Investigation in Software Project Failures and Business Performance

    Science.gov (United States)

    Ichu, Emmanuel A.

    2010-01-01

    Software quality is perhaps one of the most sought-after attributes in product development, however; this goal is unattained. Problem factors in software development and how these have affected the maintainability of the delivered software systems requires a thorough investigation. It was, therefore, very important to understand software…

  15. Quality Assurance in Software Development: An Exploratory Investigation in Software Project Failures and Business Performance

    Science.gov (United States)

    Ichu, Emmanuel A.

    2010-01-01

    Software quality is perhaps one of the most sought-after attributes in product development, however; this goal is unattained. Problem factors in software development and how these have affected the maintainability of the delivered software systems requires a thorough investigation. It was, therefore, very important to understand software…

  16. Metamodelling Approach and Software Tools for Physical Modelling and Simulation

    Directory of Open Access Journals (Sweden)

    Vitaliy Mezhuyev

    2015-02-01

    Full Text Available In computer science, metamodelling approach becomes more and more popular for the purpose of software systems development. In this paper, we discuss applicability of the metamodelling approach for development of software tools for physical modelling and simulation.To define a metamodel for physical modelling the analysis of physical models will be done. The result of such the analyses will show the invariant physical structures, we propose to use as the basic abstractions of the physical metamodel. It is a system of geometrical objects, allowing to build a spatial structure of physical models and to set a distribution of physical properties. For such geometry of distributed physical properties, the different mathematical methods can be applied. To prove the proposed metamodelling approach, we consider the developed prototypes of software tools.

  17. Teamwork Quality and Project Success in Software Development: A Survey of Agile Development Teams

    OpenAIRE

    Lindsjørn, Yngve; Sjøberg, Dag; Dingsøyr, Torgeir; Bergersen, Gunnar R.; Dybå, Tore

    2016-01-01

    Small, self-directed teams are central in agile development. This article investigates the effect of team- work quality on team performance, learning and work satisfaction in agile software teams, and whether this effect differs from that of traditional software teams. A survey was administered to 477 respondents from 71 agile software teams in 26 companies and analyzed using structural equation modeling. A posi- tive effect of teamwork quality on team performance was found when team members ...

  18. Participatory Design Activities and Agile Software Development

    Science.gov (United States)

    Kautz, Karlheinz

    This paper contributes to the studies of design activities in information systems development. It provides a case study of a large agile development project and focusses on how customers and users participated in agile development and design activities in practice. The investigated project utilized the agile method eXtreme Programming. Planning games, user stories and story cards, working software, and acceptance tests structured the customer and user involvement. We found genuine customer and user involvement in the design activities in the form of both direct and indirect participation in the agile development project. The involved customer representatives played informative, consultative, and participative roles in the project. This led to their functional empowerment— the users were enabled to carry out their work to their own satisfaction and in an effective, efficient, and economical manner.

  19. Collaborative Software Development on the Web

    CERN Document Server

    Nordio, Martin; Estler, H -Christian

    2011-01-01

    Software development environments (IDEs) have not followed the IT industry's inexorable trend towards distribution. They do too little to address the problems raised by today's increasingly distributed projects; neither do they seize the potential benefits of the Internet, as many other kinds of IT applications have done through their move to Cloud Computing. A consequence is the continued reliance of today's IDEs on paradigms such as traditional configuration management, which were developed for earlier modes of operation and hamper distributed projects. This contribution describes a new paradigm: cloud-based development, which takes advantage of the Internet to benefit all projects, and caters to the specific needs of distributed projects. The CloudStudio IDE embodies this paradigm by enabling developers to work on a shared project repository. Configuration management becomes unobtrusive; it replaces the explicit update-modify-commit cycle, with its damaging "Big Bang" effects, by automatic history manageme...

  20. Trust in Co-sourced Software Development

    DEFF Research Database (Denmark)

    Schlichter, Bjarne Rerup; Persson, John Stouby

    2014-01-01

    . We present a case study of how the co-sourcing relationship between a certified CMMI-level 5 Danish software company and an offshoring supplier can be conceptualized as an Abstract System. An Abstract System is a dis-embedded social system (such as banking) that is trusted despite lack of detailed...... understanding or personal trust relations. The paper suggest how certain work practices among developers and managers can be explained using a dynamic trust lens based on Abstract Systems, especially dis- and re-embedding mechanisms....

  1. Programming language concepts for software developers

    DEFF Research Database (Denmark)

    Sestoft, Peter

    2008-01-01

    languages, and will study the implementation of Java and C# with their underlying platforms, the Java Virtual Machine and .NET Common Language Runtime. We emphasize implementation exercises and experiments. This comes at the expense of classical compiler course subjects such as register allocation......This note describes and motivates our current plans for an undergraduate course on programming language concepts for software development students. We describe the competences we expect students to acquire as well as the topics covered by the course. We plan to use C# and Scheme as instruction...

  2. Memoised Garbage Collection for Software Model Checking

    NARCIS (Netherlands)

    Nguyen, V.Y.; Ruys, T.C.; Kowalewski, S.; Philippou, A.

    Virtual machine based software model checkers like JPF and MoonWalker spend up to half of their veri��?cation time on garbage collection. This is no surprise as after nearly each transition the heap has to be cleaned from garbage. To improve this, this paper presents the Memoised Garbage Collection

  3. Teaching and learning the Hodgkin-Huxley model based on software developed in NEURON's programming language hoc

    National Research Council Canada - National Science Library

    Hernández, Oscar E; Zurek, Eduardo E

    2013-01-01

    .... The aim of this work is to develop a didactic and easy-to-use computational tool in the NEURON simulation environment, which allows graphical visualization of both the passive and active conduction...

  4. Attacks on Web Based Software and Modelling Defence Mechanisms

    Directory of Open Access Journals (Sweden)

    D.R. Ingle

    2012-08-01

    Full Text Available The software life cycle was in use to develop the good software. Now a day’s the software development life cycle should incorporate the security features. Input Validation Attacks are one of the most wide spread forms of vulnerability on the Web application. Our main intention is to focuses on detection and prevention of Input Validation attacks like SQL Injection, Cross Site Scripting and Buffer Overflow by incorporating security in software development life cycle. We have introduced a novel approach of preclusion and uncovering of Input Validation Attacks. SQL Injection , Cross Site Scripting, A buffer overflow attacks, experimentations are made to do these attacks on various sides and the defense mechanism model is proposed to avoid these attacks on the code.

  5. Software Support of Modelling using Ergonomic Tools in Engineering

    Directory of Open Access Journals (Sweden)

    Darina Dupláková

    2017-08-01

    Full Text Available One of the preconditions for correct development of industrial production is continuous interconnecting of virtual reality and real world by computer software. Computer software are used for product modelling, creation of technical documentation, scheduling, management and optimization of manufacturing processes, and efficiency increase of human work in manufacturing plants. This article describes the frequent used ergonomic software which helping to increase of human work by error rate reducing, risks factors of working environment, injury in workplaces and elimination of arising occupational diseases. They are categorized in the field of micro ergonomics and they are applicable at the manufacturing level with flexible approach in solving of established problems.

  6. A Survey Identifying Trends on Use of Software Development Tools in Different Indian SMEs

    Directory of Open Access Journals (Sweden)

    Nomi Baruah Ashima

    2012-10-01

    Full Text Available Software Process Improvement defines the identification of the current state-of- practice of processeswithin an organization and then improving it. Software Process Improvement is ever lasting, never endingand ever changing process. Some of the issues which force an organization to undergo software processimprovement are customer dissatisfaction, inadequate software quality, inability to deliver on time andwithin budget, and excessive rework. The SMEs are using software process models but they are not able todeliver on time and within budget, and excessive rework. The SMEs are using software processimprovement models but they are not able to follow all the processes due to lack of resource and cost toimprove their productivity and quality of their product. A survey of 18 SMEs catering software market hasbeen carried out for finding software development scenarios.The intent of the study was to find theprevailing tools and techniques , the SMEs are using to automate software development process and toincorporate software project management. The survey identifies four different types of SoftwareDevelopment Tools which are proving to be effective in current scenario of software development. Theseare identified as Requirement Management Tools, Process Modelling Tools, Software ConfigurationManagement Tools and Cost Estimating Tools. This paper summarizes the trends followed in usage ofSoftware Development Tools in SMEs and it has been shown graphically also.

  7. Open Source Software Movement:A Challenging Opportunity for the Development of China's Software Industry

    Institute of Scientific and Technical Information of China (English)

    LI Mingzhi; ZHENG Jie

    2004-01-01

    The software industries in developing countries are facing enormous challenges in order to grow amid fierce competition of import from the software makers in developed countries. Open source software (OSS) movement, which is a particular phenomenon in the software industries, seems to be a challenging opportunity for the developing countries that wants to move their own software industries up the value chain. This paper, using China as an example, identifies the issues that need to be addressed for the software industry, as well as the special characteristics of software products that need to be dealt with carefully. It proposes promoting OSS as a strategy the Chinese government should adopt to grow the software industry and the speciftc actions that should be taken.

  8. Software life cycle dynamic simulation model: The organizational performance submodel

    Science.gov (United States)

    Tausworthe, Robert C.

    1985-01-01

    The submodel structure of a software life cycle dynamic simulation model is described. The software process is divided into seven phases, each with product, staff, and funding flows. The model is subdivided into an organizational response submodel, a management submodel, a management influence interface, and a model analyst interface. The concentration here is on the organizational response model, which simulates the performance characteristics of a software development subject to external and internal influences. These influences emanate from two sources: the model analyst interface, which configures the model to simulate the response of an implementing organization subject to its own internal influences, and the management submodel that exerts external dynamic control over the production process. A complete characterization is given of the organizational response submodel in the form of parameterized differential equations governing product, staffing, and funding levels. The parameter values and functions are allocated to the two interfaces.

  9. Analysis of Gumbel Model for Software Reliability Using Bayesian Paradigm

    Directory of Open Access Journals (Sweden)

    Raj Kumar

    2012-12-01

    Full Text Available In this paper, we have illustrated the suitability of Gumbel Model for software reliability data. The model parameters are estimated using likelihood based inferential procedure: classical as well as Bayesian. The quasi Newton-Raphson algorithm is applied to obtain the maximum likelihood estimates and associated probability intervals. The Bayesian estimates of the parameters of Gumbel model are obtained using Markov Chain Monte Carlo(MCMC simulation method in OpenBUGS(established software for Bayesian analysis using Markov Chain Monte Carlo methods. The R functions are developed to study the statistical properties, model validation and comparison tools of the model and the output analysis of MCMC samples generated from OpenBUGS. Details of applying MCMC to parameter estimation for the Gumbel model are elaborated and a real software reliability data set is considered to illustrate the methods of inference discussed in this paper.

  10. Estimation of Remained defects in a Safety-Critical Software using Bayesian Belief Network of Software Development Life Cycle

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Seung Jun; Jung, Wondea Jung [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2015-10-15

    Some researchers recognized Bayesian belief network (BBN) method to be a promising method of quantifying software reliability. Brookhaven National Laboratory (BNL) comprehensively reviewed various quantitative software reliability methods to identify the most promising methods for use in probabilistic safety assessments (PSAs) of digital systems of NPPs against a set of the most desirable characteristics developed therein. BBNs are recognized as a promising way of quantifying software reliability and are useful for integrating many aspects of software engineering and quality assurance. The method explicitly incorporates important factors relevant to reliability, such as the quality of the developer, the development process, problem complexity, testing effort, and the operation environment. In this work, a BBN model was developed to estimate the number of remained defects in a safety-critical software based on the quality evaluation of software development life cycle (SDLC). Even though a number of software reliability evaluation methods exist, none of them can be applicable to the safety-critical software in an NPP because software quality in terms of PDF is required for the PSA.

  11. Human Persuasion Integration in Software Development Lifecycle (SDLC

    Directory of Open Access Journals (Sweden)

    Muhammad Shakeel Faridi

    2012-07-01

    Full Text Available Of course, people have different opinions about what is attractive. They have different views of whats attractive; designers need to understand the aesthetics of their target audiences when creating a persuasive technology product. The more visually attractive the product is to its target audience, the more likely it is to be persuasive. Similarly during development software product, software engineers are facing lot of problems. End user feels reluctant to provide the whole his persuasion during requirement gathering phase. In this paper the author tried to propose a human persuasion (HP model that will embed during the software development lifecycle (SDLC. In this way a powerful solution can be achieved within available resources.

  12. Cross-Language Support Mechanisms Significantly Aid Software Development

    DEFF Research Database (Denmark)

    Pfeiffer, Rolf-Helge; Wasowski, Andrzej

    2012-01-01

    Contemporary software systems combine many artifacts specified in various modeling and programming languages, domainspecific and general purpose as well. Since multi-language systems are so widespread, working on them calls for tools with cross-language support mechanisms such as (1) visualization...... tasks on the JTrac web application using a prototype tool implementing these mechanisms. The results speak clearly for integration of cross-language support mechanisms into software development tools, and justify research on automatic inference, manipulation and handling of cross-language relations......., (2) static checking, (3) navigation, and (4) refactoring of cross-language relations. We investigate whether these four mechanisms indeed improve efficiency and quality of development of multi-language systems. We run a controlled experiment in which 22 participants perform typical software evolution...

  13. Development of Flexible Software Process Lines with Variability Operations

    DEFF Research Database (Denmark)

    Dohrmann, Patrick; Schramm, Joachim; Kuhrmann, Marco

    2016-01-01

    the development of flexible software process lines. Method: We conducted a longitudinal study in which we studied 5 variants of the V-Modell XT process line for 2 years. Results: Our results show the variability operation instrument feasible in practice. We analyzed 616 operation exemplars addressing various......Context: A software process line helps to systematically develop and manage families of processes and, as part of this, variability operations provide means to modify and reuse pre-defined process assets. Objective: Our goal is to evaluate the feasibility of variability operations to support...... customization scenarios, and we found 87 different operation types. Conclusions: Although variability operations are only one instrument among others, our results suggest this instrument useful to implement variability in real-life software process lines....

  14. Development of Flexible Software Process Lines with Variability Operations

    DEFF Research Database (Denmark)

    Dohrmann, Patrick; Schramm, Joachim; Kuhrmann, Marco

    2016-01-01

    Context: A software process line helps to systematically develop and manage families of processes and, as part of this, variability operations provide means to modify and reuse pre-defined process assets. Objective: Our goal is to evaluate the feasibility of variability operations to support...... the development of flexible software process lines. Method: We conducted a longitudinal study in which we studied 5 variants of the V-Modell XT process line for 2 years. Results: Our results show the variability operation instrument feasible in practice. We analyzed 616 operation exemplars addressing various...... customization scenarios, and we found 87 different operation types. Conclusions: Although variability operations are only one instrument among others, our results suggest this instrument useful to implement variability in real-life software process lines....

  15. Stochastic Differential Equation-Based Flexible Software Reliability Growth Model

    Directory of Open Access Journals (Sweden)

    P. K. Kapur

    2009-01-01

    Full Text Available Several software reliability growth models (SRGMs have been developed by software developers in tracking and measuring the growth of reliability. As the size of software system is large and the number of faults detected during the testing phase becomes large, so the change of the number of faults that are detected and removed through each debugging becomes sufficiently small compared with the initial fault content at the beginning of the testing phase. In such a situation, we can model the software fault detection process as a stochastic process with continuous state space. In this paper, we propose a new software reliability growth model based on Itô type of stochastic differential equation. We consider an SDE-based generalized Erlang model with logistic error detection function. The model is estimated and validated on real-life data sets cited in literature to show its flexibility. The proposed model integrated with the concept of stochastic differential equation performs comparatively better than the existing NHPP-based models.

  16. A Comparison of Learning Technologies for Teaching Spacecraft Software Development

    Science.gov (United States)

    Straub, Jeremy

    2014-01-01

    The development of software for spacecraft represents a particular challenge and is, in many ways, a worst case scenario from a design perspective. Spacecraft software must be "bulletproof" and operate for extended periods of time without user intervention. If the software fails, it cannot be manually serviced. Software failure may…

  17. A Comparison of Learning Technologies for Teaching Spacecraft Software Development

    Science.gov (United States)

    Straub, Jeremy

    2014-01-01

    The development of software for spacecraft represents a particular challenge and is, in many ways, a worst case scenario from a design perspective. Spacecraft software must be "bulletproof" and operate for extended periods of time without user intervention. If the software fails, it cannot be manually serviced. Software failure may…

  18. Running an agile software development project

    CERN Document Server

    Holcombe, Mike

    2008-01-01

    A Practical Approach To Building Small To Medium Software Systems For Real Business Clients Based on more than 100 actual commercial projects, this book clearly explains how to run an agile software development project that delivers high-quality, high-value solutions to business clients. It concentrates on the practical, social, business, and management aspects as well as the technical issues involved. Professor Holcombe successfully connects readers with the wave of "Agile 2.0" concepts that take the techniques of agile development and place them in the service of business goals. Since it is widely believed that the use of Windows XP will become much more common in coming years, readers should be armed with cutting-edge knowledge of the latest practices in the field. Further features of the book include: Case studies provide real-world examples and describe how XP was introduced into the environment Analysis is provided to help readers determine which elements of XP are suitable for the unique challenges and...

  19. Spaceport Command and Control System Software Development

    Science.gov (United States)

    Mahlin, Jonathan Nicholas

    2017-01-01

    There is an immense challenge in organizing personnel across a large agency such as NASA, or even over a subset of that, like a center's Engineering directorate. Workforce inefficiencies and challenges are bound to grow over time without oversight and management. It is also not always possible to hire new employees to fill workforce gaps, therefore available resources must be utilized more efficiently. The goal of this internship was to develop software that improves organizational efficiency by aiding managers, making employee information viewable and editable in an intuitive manner. This semester I created an application for managers that aids in optimizing allocation of employee resources for a single division with the possibility of scaling upwards. My duties this semester consisted of developing frontend and backend software to complete this task. The application provides user-friendly information displays and documentation of the workforce to allow NASA to track diligently track the status and skills of its workforce. This tool should be able to prove that current employees are being effectively utilized and if new hires are necessary to fulfill skill gaps.

  20. Formulation of price strategies in the software sector: outsourcing of development and maintenance software product case

    Directory of Open Access Journals (Sweden)

    Antonio Cezar Bornia

    2008-07-01

    Full Text Available The main goal of this article is to discuss the formulation of price strategies in the software sector. In the intention of reaching the proposed goal, strategies models of prices are introduced along with the procedure to the formulation of price strategies, composed by five stages: external and internal analyses, consolidation, positioning, price strategy formalization and market attendance. As for the methodology, the study is classified as qualitative, exploratory, descriptive, documental, of field and case study, according to the approach of Vergara (1998. In the case study, the model to the formulation of price strategies is applied in a company’s software sector, being analyzed the outsourcing of development and maintenance software product. As main contributions, it is highlighted the price procedure application that emphasizes strategic price logic and prices strategies formulations, with base in the analysis of five main factors: quality, comparison with the competition, company life cycle, product life cycle and characteristics of the segment-objective. Based on the analyzed factors, a possible strategy to be adopted considering the characteristics of the product and the company is the price strategy and superior value. Key-words: Pricing Strategies. Price Formulation. Software Enterprises.

  1. Software Requirements Specification Verifiable Fuel Cycle Simulation (VISION) Model

    Energy Technology Data Exchange (ETDEWEB)

    D. E. Shropshire; W. H. West

    2005-11-01

    The purpose of this Software Requirements Specification (SRS) is to define the top-level requirements for a Verifiable Fuel Cycle Simulation Model (VISION) of the Advanced Fuel Cycle (AFC). This simulation model is intended to serve a broad systems analysis and study tool applicable to work conducted as part of the AFCI (including costs estimates) and Generation IV reactor development studies.

  2. Development of the software Conden 1.0 in finite differences to model electrostatics problems 2D

    Directory of Open Access Journals (Sweden)

    Wilson Rodríguez Calderón

    2012-05-01

    Full Text Available The present work consists on the development and implementation of the finite differences method for over-relaxation adapted to irregular meshes to determine the influence of the air frontiers on the potencial values and field electricians, calculated inside a badges parallel condenser, using GID like a pre/post-process platform and Fortran like a programming language of the calculation motor of differences Conden 1.0. The problem domain is constituted by two rectangles that represent the condenser and the air layer that covers it, divided in rectangular meshes no standardize.

  3. Cloud Computing as an Enabler of Agile Global Software Development

    National Research Council Canada - National Science Library

    Maureen Tanner; Timothy Haig-Smith

    2016-01-01

    Agile global software development (AGSD) is an increasingly prevalent software development strategy, as organizations hope to realize the benefits of accessing a larger resource pool of skilled labor, at a potentially reduced cost, while...

  4. IDENTIFICATION AND QUANTIFICATION OF FACTORS AFFECTING REUSABILITY OF OPEN SOURCE SOFTWARE IN REUSE-INTENSIVE SOFTWARE DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Aized Amin Soof

    2017-02-01

    Full Text Available Open Source Software (OSS is one of the emerging areas in software engineering. Reuse of OSS is employed in reuse-intensive software development such as Component Based Software Development and Software Product Lines. OSS is gaining the interest of the software development community due to its enormous benefits. The context of this study is the identification and quantification of factors affecting reusability of OSS in reuse-intensive software development. The use of OSS in the systematic reuse of software, such as in Software Product Lines (SPLs is a new phenomenon. Therefore, the aim of this study is to identify and quantify the factors affecting the reusability of OSS in reuse-intensive software development, especially for SPLs. In this study, a mixed methods based approach is employed to identify the factors affecting the reusability of OSS. Interviews are conducted with experts in this field as the qualitative part, followed by a survey, experiments and a statistical analysis. The factors identified during the interviews are ranked by software engineers in a survey. Experiment is conducted to assess the reusability of open source packages. The factors are validated by conducting a statistical analysis of the results of the experiments. A set of nine factors were identified as a result of the qualitative study. A model was formed on the basis of the findings of interviews and a survey. It includes five factors. These were statistically analyzed by applying the model to 77 open source packages. A set of nine factors were identified as affecting reusability of OSS in a reuse-intensive development environment. Five of them were validated at the code level. The statistical results show a positive correlation between reusability and the identified factors.

  5. Development of Visualization Software for McCARD Code

    Science.gov (United States)

    Park, Chang Je; Lee, Byungchul; Shim, Hyung Jin; Yoeng Choi, Kwang; Roh, Chang Hyun

    2014-06-01

    In order to confirm geometrical modeling of input file of the McCARD (Monte Carlo Code for Advanced Reactor Design and analysis) code, a 2D visualization program with a 3D modeling has been developed. It requires lots of mathematical operations and advanced technologies for design graphical program of complicated geometries. The software is coded with the visual C++ language and run under the Windows PC environment.

  6. Interorganizational Boundary Spanning in Global Software Development

    DEFF Research Database (Denmark)

    Søderberg, Anne-Marie; Romani, Laurence

    Western companies´ outsourcing of projects to emergent markets are increasingly being replaced by strategic partnerships that require closer collaboration between client and vendor. Existing research on global teamwork has primarily focused on the challenges, limitations and difficulties related...... to virtuality and cultural diversity. This paper, which draws on a case study of collaborative work in a global software development project, focuses on key boundary spanners in an Indian vendor company, who are responsible for developing trustful and sustainable client relations and coordinating complex...... projects across multiple cultures, languages, organisational boundaries, time zones and geographical distances. It looks into how these vendor managers get prepared for their complex boundary spanning work, which cross-cultural challenges they experience in their collaboration with Western clients...

  7. Herramientas libres para modelar software Free tools to model software

    Directory of Open Access Journals (Sweden)

    Mauro Callejas Cuervo Óscar Yovany Baquero Moreno

    2010-11-01

    Full Text Available Observación acerca del  software libre y de suimplicación en procesos de desarrollo de  softwarecon herramientas 4G por parte de entidades opersonas sin capitales astronómicos y sin lamentalidad acaparadora de dominar el mercado conproductos costosos que las hagan multimillonarias yque no ofrecen una garantía real, ni la posibilidadsiquiera de conocer el  software por el que se hapagado, y mucho menos de modificarlo si no cumplenuestras expectativas.

  8. Software systems for modeling articulated figures

    Science.gov (United States)

    Phillips, Cary B.

    1989-01-01

    Research in computer animation and simulation of human task performance requires sophisticated geometric modeling and user interface tools. The software for a research environment should present the programmer with a powerful but flexible substrate of facilities for displaying and manipulating geometric objects, yet insure that future tools have a consistent and friendly user interface. Jack is a system which provides a flexible and extensible programmer and user interface for displaying and manipulating complex geometric figures, particularly human figures in a 3D working environment. It is a basic software framework for high-performance Silicon Graphics IRIS workstations for modeling and manipulating geometric objects in a general but powerful way. It provides a consistent and user-friendly interface across various applications in computer animation and simulation of human task performance. Currently, Jack provides input and control for applications including lighting specification and image rendering, anthropometric modeling, figure positioning, inverse kinematics, dynamic simulation, and keyframe animation.

  9. Large-scale GW software development

    Science.gov (United States)

    Kim, Minjung; Mandal, Subhasish; Mikida, Eric; Jindal, Prateek; Bohm, Eric; Jain, Nikhil; Kale, Laxmikant; Martyna, Glenn; Ismail-Beigi, Sohrab

    Electronic excitations are important in understanding and designing many functional materials. In terms of ab initio methods, the GW and Bethe-Saltpeter Equation (GW-BSE) beyond DFT methods have proved successful in describing excited states in many materials. However, the heavy computational loads and large memory requirements have hindered their routine applicability by the materials physics community. We summarize some of our collaborative efforts to develop a new software framework designed for GW calculations on massively parallel supercomputers. Our GW code is interfaced with the plane-wave pseudopotential ab initio molecular dynamics software ``OpenAtom'' which is based on the Charm++ parallel library. The computation of the electronic polarizability is one of the most expensive parts of any GW calculation. We describe our strategy that uses a real-space representation to avoid the large number of fast Fourier transforms (FFTs) common to most GW methods. We also describe an eigendecomposition of the plasmon modes from the resulting dielectric matrix that enhances efficiency. This work is supported by NSF through Grant ACI-1339804.

  10. Increasing the reliability of ecological models using modern software engineering techniques

    Science.gov (United States)

    Robert M. Scheller; Brian R. Sturtevant; Eric J. Gustafson; Brendan C. Ward; David J. Mladenoff

    2009-01-01

    Modern software development techniques are largely unknown to ecologists. Typically, ecological models and other software tools are developed for limited research purposes, and additional capabilities are added later, usually in an ad hoc manner. Modern software engineering techniques can substantially increase scientific rigor and confidence in ecological models and...

  11. Firing Room Remote Application Software Development & Swamp Works Laboratory Robot Software Development

    Science.gov (United States)

    Garcia, Janette

    2016-01-01

    The National Aeronautics and Space Administration (NASA) is creating a way to send humans beyond low Earth orbit, and later to Mars. Kennedy Space Center (KSC) is working to make this possible by developing a Spaceport Command and Control System (SCCS) which will allow the launch of Space Launch System (SLS). This paper's focus is on the work performed by the author in her first and second part of the internship as a remote application software developer. During the first part of her internship, the author worked on the SCCS's software application layer by assisting multiple ground subsystems teams including Launch Accessories (LACC) and Environmental Control System (ECS) on the design, development, integration, and testing of remote control software applications. Then, on the second part of the internship, the author worked on the development of robot software at the Swamp Works Laboratory which is a research and technology development group which focuses on inventing new technology to help future In-Situ Resource Utilization (ISRU) missions.

  12. Prometheus Reactor I&C Software Development Methodology, for Action

    Energy Technology Data Exchange (ETDEWEB)

    T. Hamilton

    2005-07-30

    The purpose of this letter is to submit the Reactor Instrumentation and Control (I&C) software life cycle, development methodology, and programming language selections and rationale for project Prometheus to NR for approval. This letter also provides the draft Reactor I&C Software Development Process Manual and Reactor Module Software Development Plan to NR for information.

  13. Software Development Process Model Based on Risk Management%基于风险管理的软件开发过程模型

    Institute of Scientific and Technical Information of China (English)

    杨亚萍

    2011-01-01

    The so-called risk in software development process is that the issues you may encounter on schedule and budget or the impact of those issues in the software development process.If the risk in software development process becomes reality,it will increase project costs,impact the project schedule,disturb the software development plan and even ultimately affect the software project implementation.Risk management of software development is to reduce the probability of risk occurrence as much as possible.If risk management of the software development is not done properly,it will cause over budget,delayed or failure of the project.On the contrary,a good risk management can create a successful project.Therefore,for any system software development project,risk management is indispensable in project management.%所谓软件开发过程中的风险,指的是在软件的开发过程中,可能会遇到的关于进度和预算方面的问题,或者是这些问题对软件开发的影响。如果软件开发过程中的风险变为现实,就会增加项目成本、影响项目进度、打乱软件开发计划,甚至最终影响软件项目的实现。风险管理对于软件开发来讲,就是为了尽可能的降低风险发生概率。如果对软件开发中的风险管理不当,就会造成项目的超预算、延期或者项目失败。相反,良好的风险管理则可以造就一个成功的项目。因此,对于任何一个系统软件开发项目来讲,风险管理是项目管理中必不可少的。

  14. INTEGRATING CMMI MATURITY LEVEL-3 IN TRADITIONAL SOFTWARE DEVELOPMENT PROCESS

    Directory of Open Access Journals (Sweden)

    Reena Dadhich

    2012-02-01

    Full Text Available CMMI defines the practices that are specially implemented by software development businesses to achievesuccess. Practices includes topics that direct about eliciting and managing requirements, decision making,measuring performance, planning work, handling risks, and more. In this paper we will discuss CapabilityMaturity Model Integration (CMMI software process improvement maturity model and the process areasat various levels of CMMI in brief. The main emphasis of the paper is to discuss about the RiskManagement (RSKM which is one of process area at CMMI level-3. The purpose of Risk Management(RSKM processes is to identify potential problems before they occur so that risk-handling activities can beplanned and invoked as needed across the life of the product or project to mitigate adverse impacts onachieving objectives. The main aim of the paper is to analyse the effect of integrating the CMMI maturitylevel-3(process area -RSKM with the traditional software development process. It represents an attempt toorganize the sources of software development risk around the principal aspects of the softwaredevelopment cycle.

  15. Exponential order statistic models of software reliability growth

    Science.gov (United States)

    Miller, D. R.

    1986-01-01

    Failure times of a software reliability growth process are modeled as order statistics of independent, nonidentically distributed exponential random variables. The Jelinsky-Moranda, Goel-Okumoto, Littlewood, Musa-Okumoto Logarithmic, and Power Law models are all special cases of Exponential Order Statistic Models, but there are many additional examples also. Various characterizations, properties and examples of this class of models are developed and presented.

  16. Sharing Research Models: Using Software Engineering Practices for Facilitation.

    Science.gov (United States)

    Bryant, Stephanie P; Solano, Eric; Cantor, Susanna; Cooley, Philip C; Wagener, Diane K

    2011-03-01

    Increasingly, researchers are turning to computational models to understand the interplay of important variables on systems' behaviors. Although researchers may develop models that meet the needs of their investigation, application limitations-such as nonintuitive user interface features and data input specifications-may limit the sharing of these tools with other research groups. By removing these barriers, other research groups that perform related work can leverage these work products to expedite their own investigations. The use of software engineering practices can enable managed application production and shared research artifacts among multiple research groups by promoting consistent models, reducing redundant effort, encouraging rigorous peer review, and facilitating research collaborations that are supported by a common toolset. This report discusses three established software engineering practices- the iterative software development process, object-oriented methodology, and Unified Modeling Language-and the applicability of these practices to computational model development. Our efforts to modify the MIDAS TranStat application to make it more user-friendly are presented as an example of how computational models that are based on research and developed using software engineering practices can benefit a broader audience of researchers.

  17. A Reference Model for Software and System Inspections. White Paper

    Science.gov (United States)

    He, Lulu; Shull, Forrest

    2009-01-01

    Software Quality Assurance (SQA) is an important component of the software development process. SQA processes provide assurance that the software products and processes in the project life cycle conform to their specified requirements by planning, enacting, and performing a set of activities to provide adequate confidence that quality is being built into the software. Typical techniques include: (1) Testing (2) Simulation (3) Model checking (4) Symbolic execution (5) Management reviews (6) Technical reviews (7) Inspections (8) Walk-throughs (9) Audits (10) Analysis (complexity analysis, control flow analysis, algorithmic analysis) (11) Formal method Our work over the last few years has resulted in substantial knowledge about SQA techniques, especially the areas of technical reviews and inspections. But can we apply the same QA techniques to the system development process? If yes, what kind of tailoring do we need before applying them in the system engineering context? If not, what types of QA techniques are actually used at system level? And, is there any room for improvement.) After a brief examination of the system engineering literature (especially focused on NASA and DoD guidance) we found that: (1) System and software development process interact with each other at different phases through development life cycle (2) Reviews are emphasized in both system and software development. (Figl.3). For some reviews (e.g. SRR, PDR, CDR), there are both system versions and software versions. (3) Analysis techniques are emphasized (e.g. Fault Tree Analysis, Preliminary Hazard Analysis) and some details are given about how to apply them. (4) Reviews are expected to use the outputs of the analysis techniques. In other words, these particular analyses are usually conducted in preparation for (before) reviews. The goal of our work is to explore the interaction between the Quality Assurance (QA) techniques at the system level and the software level.

  18. An Introduction to Flight Software Development: FSW Today, FSW 2010

    Science.gov (United States)

    Gouvela, John

    2004-01-01

    Experience and knowledge gained from ongoing maintenance of Space Shuttle Flight Software and new development projects including Cockpit Avionics Upgrade are applied to projected needs of the National Space Exploration Vision through Spiral 2. Lessons learned from these current activities are applied to create a sustainable, reliable model for development of critical software to support Project Constellation. This presentation introduces the technologies, methodologies, and infrastructure needed to produce and sustain high quality software. It will propose what is needed to support a Vision for Space Exploration that places demands on the innovation and productivity needed to support future space exploration. The technologies in use today within FSW development include tools that provide requirements tracking, integrated change management, modeling and simulation software. Specific challenges that have been met include the introduction and integration of Commercial Off the Shelf (COTS) Real Time Operating System for critical functions. Though technology prediction has proved to be imprecise, Project Constellation requirements will need continued integration of new technology with evolving methodologies and changing project infrastructure. Targets for continued technology investment are integrated health monitoring and management, self healing software, standard payload interfaces, autonomous operation, and improvements in training. Emulation of the target hardware will also allow significant streamlining of development and testing. The methodologies in use today for FSW development are object oriented UML design, iterative development using independent components, as well as rapid prototyping . In addition, Lean Six Sigma and CMMI play a critical role in the quality and efficiency of the workforce processes. Over the next six years, we expect these methodologies to merge with other improvements into a consolidated office culture with all processes being guided by

  19. An Introduction to Flight Software Development: FSW Today, FSW 2010

    Science.gov (United States)

    Gouvela, John

    2004-01-01

    Experience and knowledge gained from ongoing maintenance of Space Shuttle Flight Software and new development projects including Cockpit Avionics Upgrade are applied to projected needs of the National Space Exploration Vision through Spiral 2. Lessons learned from these current activities are applied to create a sustainable, reliable model for development of critical software to support Project Constellation. This presentation introduces the technologies, methodologies, and infrastructure needed to produce and sustain high quality software. It will propose what is needed to support a Vision for Space Exploration that places demands on the innovation and productivity needed to support future space exploration. The technologies in use today within FSW development include tools that provide requirements tracking, integrated change management, modeling and simulation software. Specific challenges that have been met include the introduction and integration of Commercial Off the Shelf (COTS) Real Time Operating System for critical functions. Though technology prediction has proved to be imprecise, Project Constellation requirements will need continued integration of new technology with evolving methodologies and changing project infrastructure. Targets for continued technology investment are integrated health monitoring and management, self healing software, standard payload interfaces, autonomous operation, and improvements in training. Emulation of the target hardware will also allow significant streamlining of development and testing. The methodologies in use today for FSW development are object oriented UML design, iterative development using independent components, as well as rapid prototyping . In addition, Lean Six Sigma and CMMI play a critical role in the quality and efficiency of the workforce processes. Over the next six years, we expect these methodologies to merge with other improvements into a consolidated office culture with all processes being guided by

  20. Modern software approaches applied to a Hydrological model: the GEOtop Open-Source Software Project

    Science.gov (United States)

    Cozzini, Stefano; Endrizzi, Stefano; Cordano, Emanuele; Bertoldi, Giacomo; Dall'Amico, Matteo

    2017-04-01

    The GEOtop hydrological scientific package is an integrated hydrological model that simulates the heat and water budgets at and below the soil surface. It describes the three-dimensional water flow in the soil and the energy exchange with the atmosphere, considering the radiative and turbulent fluxes. Furthermore, it reproduces the highly non-linear interactions between the water and energy balance during soil freezing and thawing, and simulates the temporal evolution of snow cover, soil temperature and moisture. The core components of the package were presented in the 2.0 version (Endrizzi et al, 2014), which was released as Free Software Open-source project. However, despite the high scientific quality of the project, a modern software engineering approach was still missing. Such weakness hindered its scientific potential and its use both as a standalone package and, more importantly, in an integrate way with other hydrological software tools. In this contribution we present our recent software re-engineering efforts to create a robust and stable scientific software package open to the hydrological community, easily usable by researchers and experts, and interoperable with other packages. The activity takes as a starting point the 2.0 version, scientifically tested and published. This version, together with several test cases based on recent published or available GEOtop applications (Cordano and Rigon, 2013, WRR, Kollet et al, 2016, WRR) provides the baseline code and a certain number of referenced results as benchmark. Comparison and scientific validation can then be performed for each software re-engineering activity performed on the package. To keep track of any single change the package is published on its own github repository geotopmodel.github.io/geotop/ under GPL v3.0 license. A Continuous Integration mechanism by means of Travis-CI has been enabled on the github repository on master and main development branches. The usage of CMake configuration tool

  1. Requirements Prioritization: Challenges and Techniques for Quality Software Development

    Directory of Open Access Journals (Sweden)

    Muhammad Abdullah Awais

    2016-04-01

    Full Text Available Every organization is aware of the consequences and importance of requirements for the development of quality software product whether local or global. Requirement engineering phase of development with focus on the prioritization of requirements is going under huge research every day because in any development methodology, all requirements cannot be implemented at same time so requirements are prioritized to be implemented to give solution as early as possible in phases as scheduled in incremental fashion. Numerous frameworks and practices have been devised, in progress and some being discovered day by day. With such huge knowledge database and research available, it has always been confusing to decide which technique to follow to gain maximum results. Thus many projects fail because of the wrong choice in requirement prioritization because it’s really difficult to employ right technique and framework at right time. And problems do not end here rather due to strict deadlines, it’s often best to develop system in parts by different team members dispersed globally with diverse methodologies and differences and in this situation it becomes more difficult to prioritize requirements. Main focus would be on ETVX based prioritization [1] for in house development and requirement prioritization of software developed globally by diverse team members [2]. This paper will try to provide an overview of different prioritization techniques for software requirement, and a critical analysis of ETVX based model will be presented to highlight issues and challenges in this proposed model of requirement prioritization in [1] and improved version of this model will be presented while an analysis of requirement prioritization for software developed in global environment [2] also be presented.

  2. Avionics Simulation, Development and Software Engineering

    Science.gov (United States)

    2002-01-01

    During this reporting period, all technical responsibilities were accomplished as planned. A close working relationship was maintained with personnel of the MSFC Avionics Department Software Group (ED14), the MSFC EXPRESS Project Office (FD31), and the Huntsville Boeing Company. Accomplishments included: performing special tasks; supporting Software Review Board (SRB), Avionics Test Bed (ATB), and EXPRESS Software Control Panel (ESCP) activities; participating in technical meetings; and coordinating issues between the Boeing Company and the MSFC Project Office.

  3. Modeling Virtual Meetings within Software Engineering Environment

    Directory of Open Access Journals (Sweden)

    Dr. Aiman Turani

    2014-04-01

    Full Text Available It is a common scenario to see project’s stakeholders, such as managers, team leaders, and developers carrying out their meeting in the online environment without a suitable preparation and facilitation For instance, stakeholders engaging in negotiation sessions trying to communicate system requirements in the virtual environment might face requirements misunderstanding which in turn might cause a whole project to fail. Usually a meeting agenda and design is implicit in the facilitator’s head. Conducting such meetings without obvious structure would potentially lead to various problems such as no one seemed to be in charge? Or there was no clear reason to meet or no agenda etc. In this paper, we are presenting a general framework to model group-based activities and meetings within software engineering field in a simplified and formal manner. Traditionally, managers submit their web-based group meeting information in a form of text-based instructions [1]. Then a group facilitator or chairperson will lead the group throughout the meeting to achieve the desired objectives. These types of meeting are relatively easy to manage in face-to-face environment where web based meeting in the other hand, is more challenging to facilitate and manage. Therefore, more and more specialized tools are immerging to manage and facilitate such meetings. For instance, Adobe Connect [2] is tool for facilitating web-based meetings. These tools usually allow facilitators to organize and prepare the meeting floor by inserting specific collaboration components such as chat, whiteboard, voting, etc. Then during the meeting the facilitator guides participants using the video or text component. This usually leads to undesirable outputs due to the lack of a clear structure or agenda in addition to the virtual distance that weakens the communication. In this paper a two level of modeling views are proposed, the static view and the dynamic view. The static view mainly

  4. Developing software for and with reuse: an ontological approach

    NARCIS (Netherlands)

    Falbo, R.A.; Guizzardi, G.; Duarte, K.C.; Natali, A.C.C.

    2002-01-01

    Software reuse has been pointed as one of the most promising technique to deal with quality and productivity problems. To support reuse, software processes have to consider two facets: developing for reuse and developing with reuse. In this paper we present an ontology-based approach for software re

  5. Detecting Coordination Problems in Collaborative Software Development Environments

    NARCIS (Netherlands)

    Amrit, Chintan Amrit; van Hillegersberg, Jos

    2008-01-01

    Software development is rarely an individual effort and generally involves teams of developers collaborating to generate good reliable code. Among the software code there exist technical dependencies that arise from software components using services from other components. The different ways of

  6. The Relevance of Software Development Education for Students

    Science.gov (United States)

    Liebenberg, Janet; Huisman, Magda; Mentz, Elsa

    2015-01-01

    Despite a widely-acknowledged shortage of software developers, and reports of a gap between industry needs and software education, the possible gap between students' needs and software development education has not been explored in detail. In their university education, students want to take courses and carry out projects that clearly relate to…

  7. A strategy for PACS development using introductory team software process

    Science.gov (United States)

    Martinez-Martinez, A.; Nunyez-Gaona, M. A.; Jimenez-Alaniz, J. R.; Munyoz de Cote, J. E.; Chavez-Avelar, N.; Delgado-Esquerra, R. E.; Gutierrez-Martinez, J.

    2005-04-01

    A PACS development requires to fill the needs of a specific imagenology area in a hospital and, as consequence, the amount of requirements associated to a PACS implicate a great complexity. This can be observed through methods that allow the size and complexity of a PACS software system to be quantified and measured, by analyzing the user requirements and interactions with other systems to be realized. When a PACS development is proposed, it can be difficult to actually launch the development project since a lot of time may be invested in defining the initial activities to be performed. In this work a model to address the complexity of a PACS development is proposed, and a strategy to divide the different tasks involved is defined. The model can offer an estimation about the effort to be spent. To face the problem, a correct planning and schedule can be defined. The model was obtained applying the first steps of the introductory Team Software Process (TSPi) methodology, and was represented using Unified Modelling Language activity diagrams. The model shows the different activities that have to be realized during the PACS development, and also the products that are generated once activities are accomplished. Another main aspect is a dependence view which shows the synchronization and dependence between tasks. This allows the possible sequences of activities to be visualized, and to be planned across different cycles. According to the TSPi, in each planned cycle a testable version of a PACS specific application should to be produced and the combination of the products, obtained through the different cycles should produce a final software system. With the model presented in this work, PACS developers can have a clear idea about the involved tasks and can schedule the work to accomplish specific PACS applications. A case study was conducted at the "Centro Nacional de Rehabilitacion" (National Rehabilitation Center)in Mexico City, using the proposed model.

  8. Developing sustainable software solutions for bioinformatics by the " Butterfly" paradigm.

    Science.gov (United States)

    Ahmed, Zeeshan; Zeeshan, Saman; Dandekar, Thomas

    2014-01-01

    Software design and sustainable software engineering are essential for the long-term development of bioinformatics software. Typical challenges in an academic environment are short-term contracts, island solutions, pragmatic approaches and loose documentation. Upcoming new challenges are big data, complex data sets, software compatibility and rapid changes in data representation. Our approach to cope with these challenges consists of iterative intertwined cycles of development (" Butterfly" paradigm) for key steps in scientific software engineering. User feedback is valued as well as software planning in a sustainable and interoperable way. Tool usage should be easy and intuitive. A middleware supports a user-friendly Graphical User Interface (GUI) as well as a database/tool development independently. We validated the approach of our own software development and compared the different design paradigms in various software solutions.

  9. Smartphone Software Development Model Study on Component Technology%基于构件技术的智能手机软件开发模型的研究

    Institute of Scientific and Technical Information of China (English)

    林豫晖

    2011-01-01

    智能手机的系统资源很有限,它的功能众多,但彼此间存在着很多的矛盾,这些问题导致了传统软件开发模式阻碍了智能手机软件的开发。所以对于智能手机的软件开发显得尤为重要,由于智能手机的软件众多,本文主要针对其中的MMS客户端软件为研究对象,结合构件技术的知识对智能手机软件模型进行浅要的分析。%The smart phone is very limited system resources,it's many functions,but there are many among the contradictions,these problems led to the traditional software development model hindered the development of smart phone software.So for the smart phone software development is particularly important,as many smart phone software,this article focuses on one of the MMS client software for the study, combined with knowledge of component technology for smart phone software to model shallow analysis.

  10. DYNAMIC SOFTWARE AVAILABILITY MODEL WITH REJUVENATION

    National Research Council Canada - National Science Library

    Dohi, Tadashi; Okamura, Hiroyuki

    2016-01-01

    In this paper we consider an operational software system with multi-stage degradation levels due to software aging, and derive the optimal dynamic software rejuvenation policy maximizing the steady...

  11. Agile Development & Software Architecture - Crossing the Great Divide

    Science.gov (United States)

    2016-06-07

    2010 Carnegie Mellon University SEI Webinar Series: Agile Development & Software Architecture – Crossing the Great Divide Software Engineering...2010 4. TITLE AND SUBTITLE Agile Development & Software Architecture - Crossing the Great Divide 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM...Mellon University , Software Engineering Institute,Pittsburgh,PA,15213 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S

  12. Exploring the organizational impact of software-as-a-Service on software vendors the role of organizational integration in software-as-a-Service development and operation

    CERN Document Server

    Stuckenberg, Sebastian

    2014-01-01

    Software-as-a-Service has gained momentum as a software delivery and pricing model within the software industry. Existing practices of software vendors are challenged by a potential paradigm shift. This book analyzes the implications of Software-as-a-Service on software vendors using a business model and value chain perspective. The analysis of qualitative data from software vendors highlights the role of organizational integration within software vendors. By providing insights regarding the impact of Software-as-a-Service on organizational structures and processes of software vendors, this st

  13. Advancing Software Development for a Multiprocessor System-on-Chip

    Directory of Open Access Journals (Sweden)

    Stephen Bique

    2007-06-01

    Full Text Available A low-level language is the right tool to develop applications for some embedded systems. Notwithstanding, a high-level language provides a proper environment to develop the programming tools. The target device is a system-on-chip consisting of an array of processors with only local communication. Applications include typical streaming applications for digital signal processing. We describe the hardware model and stress the advantages of a flexible device. We introduce IDEA, a graphical integrated development environment for an array. A proper foundation for software development is a UML and standard programming abstractions in object-oriented languages.

  14. MODEL-BASED SOFTWARE ENGINEERING (MBSE AND ITS VARIOUS APPROACHES AND CHALLENGES

    Directory of Open Access Journals (Sweden)

    Reema Sandhu

    2015-10-01

    Full Text Available One of the goals of software design is to model a system in such a way that it is easily understandable. The use of model-based software development is increasingly popular due to recent advancements in modeling technology. Nowadays the tendency for software development is changing from manual coding to automatic code generation thus relieving the human from detailed coding. This is a response to the software crisis, in which the cost of hardware has decreased and conversely the cost of software development has increased sharply. This paper presents the drastic changes related to modeling, different approaches and important challenging issues hat recur in MBSD. New perspectives are provided on some fundamental issues, such as the distinctions between model-driven development and architecture-centric development, code generation, and Meta modeling. Achieving a positive future will require, however, specific advances in software modeling, code generation, and model-code consistency management.

  15. Analysis of Test Efficiency during Software Development Process

    CERN Document Server

    Nair, T R Gopalakrishnan; Tiwari, Pranesh Kumar

    2012-01-01

    One of the prerequisites of any organization is an unvarying sustainability in the dynamic and competitive industrial environment. Development of high quality software is therefore an inevitable constraint of any software industry. Defect management being one of the highly influencing factors for the production of high quality software, it is obligatory for the software organizations to orient them towards effective defect management. Since, the time of software evolution, testing is deemed a promising technique of defect management in all IT industries. This paper provides an empirical investigation of several projects through a case study comprising of four software companies having various production capabilities. The aim of this investigation is to analyze the efficiency of test team during software development process. The study indicates very low-test efficiency at requirements analysis phase and even lesser test efficiency at design phase of software development. Subsequently, the study calls for a str...

  16. Integrating Behaviour in Software Models: An Event Coordination Notation

    DEFF Research Database (Denmark)

    Kindler, Ekkart

    2011-01-01

    One of the main problems in model-based software engineering is modelling behaviour in such a way that the behaviour models can be easily integrated with each other, with the structural software models and with pre-existing software. In this paper, we propose an event coordination notation (ECNO)...

  17. Development of an engine system simulation software package - ESIM

    Energy Technology Data Exchange (ETDEWEB)

    Erlandsson, Olof

    2000-10-01

    A software package, ESIM is developed for simulating internal combustion engine systems, including models for engine, manifolds, turbocharger, charge-air cooler (inter cooler) and inlet air heater. This study focus on the thermodynamic treatment and methods used in the models. It also includes some examples of system simulations made with these models for validation purposes. The engine model can be classified as a zero-dimensional, single zone model. It includes calculation of the valve flow process, models for heat release and models for in-cylinder, exhaust port and manifold heat transfer. Models are developed for handling turbocharger performance and charge air cooler characteristics. The main purpose of the project related to this work is to use the ESIM software to study heat balance and performance of homogeneous charge compression ignition (HCCI) engine systems. A short description of the HCCI engine is therefore included, pointing out the difficulties, or challenges regarding the HCCI engine, from a system perspective. However, the relations given here, and the code itself, is quite general, making it possible to use these models to simulate spark ignited, as well as direct injected engines.

  18. ThermoData Engine (TDE): software implementation of the dynamic data evaluation concept. 9. Extensible thermodynamic constraints for pure compounds and new model developments.

    Science.gov (United States)

    Diky, Vladimir; Chirico, Robert D; Muzny, Chris D; Kazakov, Andrei F; Kroenlein, Kenneth; Magee, Joseph W; Abdulagatov, Ilmutdin; Frenkel, Michael

    2013-12-23

    ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported in this journal. The present article describes the background and implementation for new additions in latest release of TDE. Advances are in the areas of program architecture and quality improvement for automatic property evaluations, particularly for pure compounds. It is shown that selection of appropriate program architecture supports improvement of the quality of the on-demand property evaluations through application of a readily extensible collection of constraints. The basis and implementation for other enhancements to TDE are described briefly. Other enhancements include the following: (1) implementation of model-validity enforcement for specific equations that can provide unphysical results if unconstrained, (2) newly refined group-contribution parameters for estimation of enthalpies of formation for pure compounds containing carbon, hydrogen, and oxygen, (3) implementation of an enhanced group-contribution method (NIST-Modified UNIFAC) in TDE for improved estimation of phase-equilibrium properties for binary mixtures, (4) tools for mutual validation of ideal-gas properties derived through statistical calculations and those derived independently through combination of experimental thermodynamic results, (5) improvements in program reliability and function that stem directly from the recent redesign of the TRC-SOURCE Data Archival System for experimental property values, and (6) implementation of the Peng-Robinson equation of state for binary mixtures, which allows for critical evaluation of mixtures involving supercritical components. Planned future developments are summarized.

  19. Model Based Analysis and Test Generation for Flight Software

    Science.gov (United States)

    Pasareanu, Corina S.; Schumann, Johann M.; Mehlitz, Peter C.; Lowry, Mike R.; Karsai, Gabor; Nine, Harmon; Neema, Sandeep

    2009-01-01

    We describe a framework for model-based analysis and test case generation in the context of a heterogeneous model-based development paradigm that uses and combines Math- Works and UML 2.0 models and the associated code generation tools. This paradigm poses novel challenges to analysis and test case generation that, to the best of our knowledge, have not been addressed before. The framework is based on a common intermediate representation for different modeling formalisms and leverages and extends model checking and symbolic execution tools for model analysis and test case generation, respectively. We discuss the application of our framework to software models for a NASA flight mission.

  20. Code Generation for Embedded Software for Modeling Clear Box Structures

    Directory of Open Access Journals (Sweden)

    V. Chandra Prakash

    2011-09-01

    Full Text Available Cleanroom software Engineering (CRSE recommended that the code related to the Application systems be generated either manually or through code generation models or represents the same as a hierarchy of clear box structures. CRSE has even advocated that the code be developed using the State models that models the internal behavior of the systems. No framework has been recommended by any Author using which the Clear boxes are designed using the code generation methods. Code Generation is one of the important quality issues addressed in cleanroom software engineering. It has been investigated that CRSE can be used for life cycle management of the embedded systems when the hardware-software co-design is in-built as part and parcel of CRSE by way of adding suitable models to CRSE and redefining the same. The design of Embedded Systems involves code generation in respect of hardware and Embedded Software. In this paper, a framework is proposed using which the embedded software is generated. The method is unique that it considers various aspects of the code generation which includes Code Segments, Code Functions, Classes, Globalization, Variable propagation etc. The proposed Framework has been applied to a Pilot project and the experimental results are presented.

  1. Reaction Wheel Disturbance Model Extraction Software - RWDMES

    Science.gov (United States)

    Blaurock, Carl

    2009-01-01

    The RWDMES is a tool for modeling the disturbances imparted on spacecraft by spinning reaction wheels. Reaction wheels are usually the largest disturbance source on a precision pointing spacecraft, and can be the dominating source of pointing error. Accurate knowledge of the disturbance environment is critical to accurate prediction of the pointing performance. In the past, it has been difficult to extract an accurate wheel disturbance model since the forcing mechanisms are difficult to model physically, and the forcing amplitudes are filtered by the dynamics of the reaction wheel. RWDMES captures the wheel-induced disturbances using a hybrid physical/empirical model that is extracted directly from measured forcing data. The empirical models capture the tonal forces that occur at harmonics of the spin rate, and the broadband forces that arise from random effects. The empirical forcing functions are filtered by a physical model of the wheel structure that includes spin-rate-dependent moments (gyroscopic terms). The resulting hybrid model creates a highly accurate prediction of wheel-induced forces. It accounts for variation in disturbance frequency, as well as the shifts in structural amplification by the whirl modes, as the spin rate changes. This software provides a point-and-click environment for producing accurate models with minimal user effort. Where conventional approaches may take weeks to produce a model of variable quality, RWDMES can create a demonstrably high accuracy model in two hours. The software consists of a graphical user interface (GUI) that enables the user to specify all analysis parameters, to evaluate analysis results and to iteratively refine the model. Underlying algorithms automatically extract disturbance harmonics, initialize and tune harmonic models, and initialize and tune broadband noise models. The component steps are described in the RWDMES user s guide and include: converting time domain data to waterfall PSDs (power spectral

  2. Scrum Method Implementation in a Software Development Project Management

    Directory of Open Access Journals (Sweden)

    Putu Adi Guna Permana

    2015-09-01

    Full Text Available To maximize the performance, companies conduct a variety of ways to increase the business profit. The work management between one company and the other company is different, so the differences in the management may cause the software to have a different business process. Software development can be defined as creating a new software or fixing the existing one. Technology developments led to increasing demand for software, Industrial Technology (IT Companies should be able to project well maintenance. The methodology in software development is used in accordance with the company's needs based on the SDLC (Software Development Life Cycle. Scrum method is a part of the Agile method that is expected to increase the speed and flexibility in software development project management.

  3. Integrating Usability Evaluations into the Software Development Process

    DEFF Research Database (Denmark)

    Lizano, Fulvio

    This thesis addresses the integration of usability evaluations into the software development process. The integration here is contextualized in terms of how to include usability evaluation as an activity in the software development lifecycle. Even though usability evaluations are considered...... as relevant and strategic human–computer interaction (HCI) activities in the software development process, there are obstacles that limit the complete, effective and efficient integration of this kind of testing into the software development process. Two main obstacles are the cost of usability evaluations...... and the software developers' resistance to accepting users’ opinions regarding the lack of usability in their software systems. The ‘cost obstacle’ refers to the constraint of conducting usability evaluations in the software process due to the significant amount of resources required by this type of testing. Some...

  4. A New Software Reliability Framework——An Extended Cleanroom Model

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Cleanroom software engineering has been proven effective in improving software development quality while at the same time increasing reliability. To adapt to large software system development, the paper presents an extended the Cleanroom model, which integrates object-oriented method based on stimulus history, reversed engineering idea, automatic testing and reliability assessment into software development. The paper discusses the architecture and realizing technology of ECM.

  5. A Review of Security Integration Technique in Agile Software Development

    Directory of Open Access Journals (Sweden)

    Raja Khaim

    2016-05-01

    Full Text Available Agile software development has gained a lot of popularity in the software industry due to its iterative and incremental approach as well as user involvement. Agile has also been criticized due to lack of its ability to deliver secure software. In this paper, extensive literature has been performed, in order to highlight the existing security issues in agile software development. Majority of challenges reported in literature, occurred due to lack of involvement of security expert. Improving security of a software system without damaging the real essence of Agile can achieved with the continuous involvement of security engineer throughout development lifecycle with its defined role and responsibilities.

  6. Models for composing software : an analysis of software composition and objects

    NARCIS (Netherlands)

    Bergmans, Lodewijk

    1999-01-01

    In this report, we investigate component-based software construction with a focus on composition. In particular we try to analyze the requirements and issues for components and software composition. As a means to understand this research area, we introduce a canonical model for representing software

  7. Software Released by LEWICE 2.0 Ice Accretion Software Development Project

    Science.gov (United States)

    Potapczuk, Mark G.

    2000-01-01

    Computational icing simulation methods are making the transition from the realm of research to commonplace use in design and certification. As such, standards of software management, design, validation, and documentation must be adjusted to accommodate the increased expectations of the user community with respect to accuracy, reliability, capability, and usability. With this in mind, in collaboration with Glenn's Engineering Design and Analysis Division, the Icing Branch of the NASA Glenn Research Center at Lewis Field began a software improvement project focused on the two-dimensional ice accretion simulation tool LEWICE. This project is serving as an introduction to the concepts of software management and is intended to serve as a pilot project for future icing simulation code development. The LEWICE 2.0 Software Development Project consisted of two major elements: software management and software validation. The software management element consisted of identifying features of well-designed and well-managed software that are appropriate for an analytical prediction tool such as LEWICE and applying them to a revised version of the code. This element included tasks such as identification of software requirements, development and implementation of coding standards, and implementation of software revision control practices. With the application of these techniques, the LEWICE ice accretion code became a more stable and reliable software product. In addition, the lessons learned about software development and maintenance can be factored into future software projects at the outset. The software validation activity was an integral part of our effort to make LEWICE a more accurate and reliable analysis tool. Because of the efforts taken to extensively validate this software, LEWICE 2.0 is more robust than previous releases and can reproduce results accurately across several computing platforms. It also differs from previous versions in the extensive quantitative

  8. Automated Environment Generation for Software Model Checking

    Science.gov (United States)

    Tkachuk, Oksana; Dwyer, Matthew B.; Pasareanu, Corina S.

    2003-01-01

    A key problem in model checking open systems is environment modeling (i.e., representing the behavior of the execution context of the system under analysis). Software systems are fundamentally open since their behavior is dependent on patterns of invocation of system components and values defined outside the system but referenced within the system. Whether reasoning about the behavior of whole programs or about program components, an abstract model of the environment can be essential in enabling sufficiently precise yet tractable verification. In this paper, we describe an approach to generating environments of Java program fragments. This approach integrates formally specified assumptions about environment behavior with sound abstractions of environment implementations to form a model of the environment. The approach is implemented in the Bandera Environment Generator (BEG) which we describe along with our experience using BEG to reason about properties of several non-trivial concurrent Java programs.

  9. Happy software developers solve problems better: psychological measurements in empirical software engineering.

    Science.gov (United States)

    Graziotin, Daniel; Wang, Xiaofeng; Abrahamsson, Pekka

    2014-01-01

    For more than thirty years, it has been claimed that a way to improve software developers' productivity and software quality is to focus on people and to provide incentives to make developers satisfied and happy. This claim has rarely been verified in software engineering research, which faces an additional challenge in comparison to more traditional engineering fields: software development is an intellectual activity and is dominated by often-neglected human factors (called human aspects in software engineering research). Among the many skills required for software development, developers must possess high analytical problem-solving skills and creativity for the software construction process. According to psychology research, affective states-emotions and moods-deeply influence the cognitive processing abilities and performance of workers, including creativity and analytical problem solving. Nonetheless, little research has investigated the correlation between the affective states, creativity, and analytical problem-solving performance of programmers. This article echoes the call to employ psychological measurements in software engineering research. We report a study with 42 participants to investigate the relationship between the affective states, creativity, and analytical problem-solving skills of software developers. The results offer support for the claim that happy developers are indeed better problem solvers in terms of their analytical abilities. The following contributions are made by this study: (1) providing a better understanding of the impact of affective states on the creativity and analytical problem-solving capacities of developers, (2) introducing and validating psychological measurements, theories, and concepts of affective states, creativity, and analytical-problem-solving skills in empirical software engineering, and (3) raising the need for studying the human factors of software engineering by employing a multidisciplinary viewpoint.

  10. Developing E-Learning Materials for Software Development Course

    CERN Document Server

    Shi, Hao

    2010-01-01

    Software Development is a core second-year course currently offered to undergraduate students at Victoria University at its five local and international campuses. The project aims to redesign the existing course curriculum to support student-centred teaching and learning. It is intended to provide a learning context in which learners can reflect on new material, discuss their tentative understandings with others, actively search for new information, develop skills in communication and collaboration, and build conceptual connections to their existing knowledge base. The key feature of the cross-campus curriculum innovation is the use of Blackboard, short for Blackboard Learning System, to assist in course content organization and online delivery. A well-defined and integrated case study is used throughout the course to provide realistic practical experience of software development. It allows students to take control of their own learning while at the same time providing support to those students who have parti...

  11. Development of Poincare Software to Predict Arrythmias

    Science.gov (United States)

    Maaliki, Samer

    2003-01-01

    The most distressing types of heart malfunction occur because of an abnormal rhythm of the heart. Cardiac arrythmias can be caused by abnormal rhythmicity of the pacemaker, electrolyte disturbances, blockage of the transmission of the electric impulse through the heart, and other abnormalities. There is strong evidence that space flight is associated with decreased cardiac electrical stability that may pose a life threatening risk to astronauts. For example, during the Skylab missions, a crewmember had a five beat run of ventricular tachycardia during lower body negative pressure. Also, analysis of nine 24-hour Holter monitor recordings obtained during long term spaceflight on Mir revealed one 14-beat run of ventricular tachycardia. A Mir cosmonaut was replaced in 1986 because of cardiac dysrhythmias. Most recently, in July of 1997, a Mir commander was unable to participate in the Spektr module repair due to complaints of an irregular heart rhythm. Despite these examples, possible mechanisms of arrhythmias and countermeasure strategies have barely been addressed. The Poincare method has been proposed as a technique that might potentially predict life-threatening arrhythmias before they occur. According to this method, each RR interval obtained from an EKG recording is plotted sequentially vs. the previous RR interval. Several studies using the method have demonstrated a strong correlation between the shape of the Poincare plot and ventricular arrhythmia. Our purpose was to develop an automated software program that detects the R peaks from an EKG recording while simultaneously displaying the Poincare plot and other related parameters.

  12. On the polynomial dynamic system approach to software development

    Institute of Scientific and Technical Information of China (English)

    WANG Xiangyun; LI Yongchao; CAI Kaiyuan

    2004-01-01

    In this paper the development of reactive software is transformed into a control problem, and the supervisory control theory for discrete event dynamic systems is suggested to solve this control problem. The operating environment under consideration is viewed as a controlled plant, the software under development as the corresponding controller, and the software requirements as the corresponding control objective. This idea leads to a constructive approach of software design, which ensures properties required a priori of the software under development. In this way the validation of the software under development is reduced to the validation of properties independent of implementation process. We reveal the inconsistence in using the concept of reachability to specify software requirements and clarify six different definitions of reachability. Two different definitions of invariance for specifying software requirements are also clarified.We then show how to synthesize the required controller or obtain software design solutions if the underlying software requirements are specified by several new combinations of reachability and invariance. The topic of this paper falls into the scope of software cybernetics that explores the interplay between software and control.

  13. The Development, Use, and Dissemination of Academic Software.

    Science.gov (United States)

    Weissman, Ronald F. E.; And Others

    1987-01-01

    This special theme issue is dedicated to topics related to courseware in higher education. Aspects addressed include faculty development of software; new technologies and their effects on knowledge; microcomputer-based software; courseware publishing; information sharing and software distribution; and future teaching and research projects. (LRW)

  14. Software Development Offshoring Competitiveness: A Case Study of ASEAN Countries

    Science.gov (United States)

    Bui, Minh Q.

    2011-01-01

    With the success of offshoring within the American software industry, corporate executives are moving their software developments overseas. The member countries of the Association of Southeast Asian Nations (ASEAN) have become a preferred destination. However, there is a lack of published studies on the region's software competitiveness in…

  15. Formal methods in the development of safety critical software systems

    Energy Technology Data Exchange (ETDEWEB)

    Williams, L.G. [Software Engineering Research, Boulder, CO (United States)

    1991-11-15

    As the use of computers in critical control systems such as aircraft controls, medical instruments, defense systems, missile controls, and nuclear power plants has increased, concern for the safety of those systems has also grown. Much of this concern has focused on the software component of those computer-based systems. This is primarily due to historical experience with software systems that often exhibit larger numbers of errors than their hardware counterparts and the fact that the consequences of a software error may endanger human life, property, or the environment. A number of different techniques have been used to address the issue of software safety. Some are standard software engineering techniques aimed at reducing the number of faults in a software protect, such as reviews and walkthroughs. Others, including fault tree analysis, are based on identifying and reducing hazards. This report examines the role of one such technique, formal methods, in the development of software for safety critical systems. The use of formal methods to increase the safety of software systems is based on their role in reducing the possibility of software errors that could lead to hazards. The use of formal methods in the development of software systems is controversial. Proponents claim that the use of formal methods can eliminate errors from the software development process, and produce programs that are probably correct. Opponents claim that they are difficult to learn and that their use increases development costs unacceptably. This report discusses the potential of formal methods for reducing failures in safety critical software systems.

  16. Software Development Offshoring Competitiveness: A Case Study of ASEAN Countries

    Science.gov (United States)

    Bui, Minh Q.

    2011-01-01

    With the success of offshoring within the American software industry, corporate executives are moving their software developments overseas. The member countries of the Association of Southeast Asian Nations (ASEAN) have become a preferred destination. However, there is a lack of published studies on the region's software competitiveness in…

  17. Happy software developers solve problems better: psychological measurements in empirical software engineering

    Directory of Open Access Journals (Sweden)

    Daniel Graziotin

    2014-03-01

    Full Text Available For more than thirty years, it has been claimed that a way to improve software developers’ productivity and software quality is to focus on people and to provide incentives to make developers satisfied and happy. This claim has rarely been verified in software engineering research, which faces an additional challenge in comparison to more traditional engineering fields: software development is an intellectual activity and is dominated by often-neglected human factors (called human aspects in software engineering research. Among the many skills required for software development, developers must possess high analytical problem-solving skills and creativity for the software construction process. According to psychology research, affective states—emotions and moods—deeply influence the cognitive processing abilities and performance of workers, including creativity and analytical problem solving. Nonetheless, little research has investigated the correlation between the affective states, creativity, and analytical problem-solving performance of programmers. This article echoes the call to employ psychological measurements in software engineering research. We report a study with 42 participants to investigate the relationship between the affective states, creativity, and analytical problem-solving skills of software developers. The results offer support for the claim that happy developers are indeed better problem solvers in terms of their analytical abilities. The following contributions are made by this study: (1 providing a better understanding of the impact of affective states on the creativity and analytical problem-solving capacities of developers, (2 introducing and validating psychological measurements, theories, and concepts of affective states, creativity, and analytical-problem-solving skills in empirical software engineering, and (3 raising the need for studying the human factors of software engineering by employing a

  18. Software development for bistable module of SMART plant protection system

    Energy Technology Data Exchange (ETDEWEB)

    Kim, J. H.; Park, H. S.; Jeo, C. W. [Samchang Enterprise Co., Ltd., Taejon (Korea, Republic of); Lee, J. G.; Park, H. Y.; Koo, I. S. [KAERI, Taejon (Korea, Republic of)

    2003-10-01

    Digitalized PPS(Plant Protection System) is going on development for SMART. The PPS consists of two different types of CPUs and DSP boards for the each functional processor modules of PPS. Software for the system has been progressed with teamwork of CASE TOOL to develop the reliable software. In this paper, we propose the software development method and show the examples for Bistable module through the functional analysis and the development of Structure Chart and M-Spec.

  19. Software Development Process Changes in the Telecommunications Industry

    Directory of Open Access Journals (Sweden)

    John Kevin Doyle

    2006-06-01

    Full Text Available The tremendous changes in the telecommunications business in the last several years drove changes in the software development processes of telecommunications equipment providers. We compare changes in these very large projects, in two companies, with those proposed in the Theory of Constraints / Critical Chains, Extreme Programming, and Agile development models. The 2000s have been a time of significant challenge in the telecommunications equipment business. Telecommunications service providers have excess equipment capacity. Many are waiting for next generation telephone switches that will simultaneously lower operating costs and enable additional revenue generation. The large service providers have drastically reduced their capital and expense purchases. Many small service providers, particularly the dot-coms, went bankrupt; much of their equipment is on the secondary market, at a fraction of the original cost. Thus the equipment market has significantly shrunk, and the equipment providers have been reducing expenses, while continuing to deliver software and hardware equipment at the high quality level required by the service providers. This drove many changes in the software development process. While the process changes are reported in two telecommunication equipment development organizations, the changes are applicable in any product development organization.

  20. Software Development Process Changes in the Telecommunications Industry

    Directory of Open Access Journals (Sweden)

    John Kevin Doyle

    2006-06-01

    Full Text Available The tremendous changes in the telecommunications business in the last several years drove changes in the software development processes of telecommunications equipment providers. We compare changes in these very large projects, in two companies, with those proposed in the Theory of Constraints / Critical Chains, Extreme Programming, and Agile development models. The 2000s have been a time of significant challenge in the telecommunications equipment business. Telecommunications service providers have excess equipment capacity. Many are waiting for next generation telephone switches that will simultaneously lower operating costs and enable additional revenue generation. The large service providers have drastically reduced their capital and expense purchases. Many small service providers, particularly the dot-coms, went bankrupt; much of their equipment is on the secondary market, at a fraction of the original cost. Thus the equipment market has significantly shrunk, and the equipment providers have been reducing expenses, while continuing to deliver software and hardware equipment at the high quality level required by the service providers. This drove many changes in the software development process. While the process changes are reported in two telecommunication equipment development organizations, the changes are applicable in any product development organization.