Except where reference is made to the work of others, the work described in this dissertation is ... more Except where reference is made to the work of others, the work described in this dissertation is my own or was done in collaboration with my advisory committee. This dissertation does not include proprietary or classified information. __________________________
Except where reference is made to the work of others, the work described in this thesis is my own... more Except where reference is made to the work of others, the work described in this thesis is my own or was done in collaboration with my advisory committee. This thesis does not include proprietary or classified information. _____________________________________
System dynamics (SD) is a methodology used to understand how systems change over time. In the 196... more System dynamics (SD) is a methodology used to understand how systems change over time. In the 1960s, the SD modeling technique was developed to solve long-term, chronic, dynamic industrial management problems; today, SD is applied to solve various business policies and strategic problems. A typical SD study focuses on understanding how the components of a system interact; how and why the dynamics of concern are generated; and how policies and decisions affect system performance. This paper presents a study which models a computer network as a systems dynamic model to explore cyber-attacks and the resulting system-level effects that might occur on host OSI layers, layer 4 and above, in the OSI model. Preliminary results indicate that by using system dynamic cyber security simulation an organization can imitate the attacker(s) activities in OSI layer 4 and above and assess (and/or mitigate) the system’s risk exposure. In this paper we are presenting a proof-of-concept SD model for app...
This paper presents our three years’ experience in designing and implementing a practitioner-cent... more This paper presents our three years’ experience in designing and implementing a practitioner-centered based undergraduate software engineering course. To engage the students in software engineering through active learning, we have adapted a single-person software process called Practitioner-Centered Software Engineering (PCSE). The objective of PCSE is to have individuals developers/students enact engineering activities at their own skill level, as opposed to dictating engineering activities in the traditional fashion. As such, PCSE is not a software process, but a framework for identifying an initial software process and modifying that process to meet specific, individual developer/student needs. We describe the implementation of the PCSE-based undergraduate software engineering course, and then present the challenges in successful implementation of PCSE-based pedagogy in undergraduate software engineering courses.
The sphere of malware attacks is expanding to engulf the compact world of smartphones. This paper... more The sphere of malware attacks is expanding to engulf the compact world of smartphones. This paper sheds light on exploitation tactics used by malware writers in designing iPhone applications that exploit the integrity of the victim's phone. Our interest is in the harder problem of malware on iPhones that are not jailbroken. Rise of the One-person Team Abstract. Truly viable software—mobile device apps, services, components—are being written by one-person teams, thus demonstrating the need for engineering discipline at the individual level. This article examines effort estimation for individuals and proposes a lightweight approach based on a synthesis of a number of concepts derived from existing team estimation practices. Software engineering is usually portrayed as a team activity, one where a myriad of technical players are choreographed to build a software solution to a complex problem. With such a per- spective, estimating the effort required to write software involves a top...
University computer science and software engineering curricula are oriented to conventional hardw... more University computer science and software engineering curricula are oriented to conventional hardware platforms. This presents an obstacle to teaching students how to develop software for mobile devices. Industry certification practices provide an insight into what is important in teaching software development for a particular class of mobile devices, cellular phones. Adapting such practices to classroom use can aid in bridging the learning gap between traditional and non-traditional platforms. 1. The problem: how to teach cellular phone software development Cellular phones have become indispensable tools for providing computation resources in a highly mobile package. An estimated 1.5 billion phones are in use today, with the number expected to grow to two billion by 2006 1 . These devices are so pervasive that many developed nations now have cellular communications infrastructures that are more reliable than their legacy land lines. In developed nations, particularly among students and young professionals, cellular phones are increasingly replacing traditional wired phones because they offer mobility, attractive calling rates, and digital services such as messaging and Internet facilities. Although phone calls are still the primary function of cell phones, these devices are increasingly viewed as mobile computers in their own right. They are equipped with processors that have the computational horsepower to organize address books, manage camera images, run games, and support a wide range of software applications once deemed the unique realm of the Personal Digital Assistant. Over 100,000 jobs in the American software industry involve writing software for mobile devices, with the number expected to triple in the next two years to a significant 11% of the software workforce 2 . The facts are plain: cell phones are a technology to be reckoned with. What are universities doing to equip their computer science and software engineering majors with skills necessary for developing software for such mobile devices? The answer is equally plain: very little 3 . Colleges teach students the principles of software development, but that instruction is oriented mostly to traditional hardware platforms. Developing software for mobile computers requires specific knowledge in working with hardware that is limited in speed, memory, power, and user interfaces. Mobile device software development is still very much a novelty; conventional university curricula do not address these areas to any depth.
The Internet of Things (IoT) is one of the most promising technologies in the era of information ... more The Internet of Things (IoT) is one of the most promising technologies in the era of information technology. IoT enables ubiquitous data collections and network communications to bring significant and indispensable convenience and intelligence both to daily life and industrial operations. However, IoT is still confronting a number of challenges and manifesting a series of issues that need to be addressed urgently. Counterfeit hardware, software faults, security issues during communication, system management difficulties, and data privacy issues are significant issues for current IoT infrastructure. Meanwhile, blockchain, as an emerging information technology, has attracted huge public interest and has shown significant promise because of its decentralization, transparency, and security. The features of blockchain seem to be an ideal match for IoT, and by applying blockchain to an IoT environment, some of the aforementioned weaknesses can be addressed. This paper's purpose is to introduce the use of blockchain in IoT applications. We present various challenges facing an IoT system and summarize the benefits of adopting blockchain into IoT infrastructure. We primarily focus on illustrating the blockchain applications in IoT with refined capabilities and enhanced security. To shed light on blockchain in IoT research, we also discuss limitations and future directions.
Today's systems are increasingly threatened by unanticipated change arising from volatility in us... more Today's systems are increasingly threatened by unanticipated change arising from volatility in user requirements, Information Technology (IT) refresh rates, and responses to security vulnerabilities. With the rapidly changing world of IT, long static development cycles of a Software Intensive System (SIS), a system in which software represents the largest segment in one or more of the following criteria: system development cost, system development risk, system functionality, or development time [1] may doom the system before development begins.
The relevance of use cases throughout the software development life cycle is considered in the co... more The relevance of use cases throughout the software development life cycle is considered in the context of an actual project. Extensions, called behavior case and test cases are proposed to address design and testing activities.
With funding from the Department of Defense, a research effort is underway to understand the meth... more With funding from the Department of Defense, a research effort is underway to understand the methods through which systems engineering learning and career interest may be increased among undergraduate and graduate engineering students. This research is being conducted in the context of 14 "capstone" projects, in most cases as an integrative culminating, project-based course, and in one case involving an entire SE graduate curriculum, involving teams of students working together on the development of a product or prototype that addresses a real Department of Defense need. Implemented as pilot projects in eight civilian and six military universities, these 14 institutions are piloting methods, materials, and approaches to create new courses, enhance existing courses, and adapt curricula, to embed, infuse, and augment systems engineering knowledge, skills, abilities, and behaviors, as defined by the SPRDE-SE/PSE Competency Model. This session will present an overview of the overall Systems Engineering Capstone research and findings to date, along with an overview and discussion of three different approaches to course design and preliminary student impacts.
Proceedings of the 46th Annual Southeast Regional Conference on XX, 2008
Along with the advances in wide-area network technologies and computer hardware, the increasing a... more Along with the advances in wide-area network technologies and computer hardware, the increasing availability of powerful computers and high speed networks are changing the high performance computing paradigm today. Recent related research has led to the emergence of a new paradigm known as grid computing. A major motivation of grid computing is to aggregate the power of widely distributed resources to provide services to users. Several unique characteristics of this paradigm make the development of grid software more challenging. In order to develop grid-aware applications, software engineering principles (e.g. software process, life-cycle model) for building conventional software must be adopted to cope with these challenges. Nowadays two kinds of software processes are frequently mentioned: heavyweight and lightweight. In this paper, we address the issues of comparing the two kinds of processes and selecting the better one for developing grid software. We choose to examine two well-known software processes: IEEE 1074 [6] and Extreme Programming [1], which respectively represents heavyweight process and lightweight process. They are first examined in detail and a comparison between them is conducted. Then we present a selection guide to choose the better methodology for a grid software project. Our analysis shows that lightweight software processes such as XP are more suitable for developing grid software.
The growing use of Object-Oriented Databases (OODBs) has necessitated the inclusion of OODBs in i... more The growing use of Object-Oriented Databases (OODBs) has necessitated the inclusion of OODBs in introductory database courses. Typically, such an analysis is conducted after the explication of the dominant industry standard: the Relational Database model (RDB). Like the RDB model, the OODB model can be easily motivated. Unlike the RDB model, an established data model with defined normal forms, the OODB model cannot be easily evaluated for "goodness". We address this deficiency by examining the criteria of coupling and cohesion in database design. This approach affords the instructor the ability to better present OODBs as well as the opportunity to re-emphasize critical software engineering concepts.
Proceedings 15th Conference on Software Engineering Education and Training (CSEE&T 2002)
This panel will consider the conditions under which software engineering degree programs are bein... more This panel will consider the conditions under which software engineering degree programs are being designed and implemented in the United States. The discussion will focus particularly on how these conditions are changing over time as more degree programs are implemented and general software engineering issues evolve. The panelists represent four undergraduate software engineering degree programs and also have experience with several graduate degree programs.
2006 IEEE Intelligent Transportation Systems Conference, 2006
Evacuation planning plays a significant role in building evacuation. The purpose of this paper is... more Evacuation planning plays a significant role in building evacuation. The purpose of this paper is to demonstrate how an evolutionary computation technique in the form of an Estimation of Distribution Algorithm can be used in evacuation planning. This technique is used to evolve the number and location of exits in order to minimize overall evacuation time and reduce the number of casualties and injuries. The algorithm is applied to three day-care layouts, classified as playroom, lunchroom, and classroom settings. The algorithm generates an optimal or near-optimal configuration, and results across several trials can be used to determine the probability that an exit is needed for each possible location. The best exit configurations are presented for each of the three layouts, and a brief analysis is discussed. Although evacuation planning presented in this paper is focused on room layouts, evolutionary computation techniques have the potential to be implemented in large-scale evacuation planning.
Proceedings of the 46th Annual Southeast Regional Conference on XX, 2008
The purpose of this paper is to examine the features of Extreme Programming (XP) and determine ho... more The purpose of this paper is to examine the features of Extreme Programming (XP) and determine how it can be applied to a single person team (i.e. a programmer who works mainly on his/her own as opposed to a programmer who works as a part of a well-integrated team). A software development process for a single person team, Personal Extreme Programming (PXP) is created. Process script for PXP is explained and the core practices of XP are compared with those of PXP.
Proceedings of the conference on TRI-ADA '90 - TRI-Ada '90, 1990
Rkhard R. Gross* David A. Urnphresst "It takes . . .15 to 20 years to ma.ture a [software] techno... more Rkhard R. Gross* David A. Urnphresst "It takes . . .15 to 20 years to ma.ture a [software] technology to the point that it can be popularized and disseminated to the community at large" [lo]. Education typically bea.rs a, large share of the blame. This paper critically examines education's role in the U.S. Air 'Force's 1930s insertion of Ada and Ada softwa.re engineering. It concludes that our principal error in the process was a failure to define "education" in a broad enough sense, to consider the educa,tional needs of the corporate Air Force ("insti t,u tional education") as well as those of the individuals in it. Lessons learned are summarized for applica.tion *Office of the Assistant Secretary of 1.h: Air 120rce (hcquisition), SAF/AQI<, Washington, DC 20330-lW0 'Department of Electrical and Computer Eugineeriug, Air Force Institute of Technology, ~~riglll.-l'ill,r.ersorl AFB, OH 45433-6583 'The views expressed herein are those ol' the authors and do not necessarily represent t,he corporate position of the U.S. Air Force Permimion to copy without fee all or part of this mate&l ia granted provided that the copiea are not made or distributed for direct commercial adrmtage, the ACM copyright notice and thrr title of the publication and ita date appear, and notice is yren that copying ia by permirrion of the Aaaocirtion for Com-yntin~ htu.hincry. To copy otherwise. or to republish, requires . fee ~rl/hr .psdk pcrmir*ion. to future technology insertion efforts.
Proceedings of the 6th International Conference on Mobile Computing, Applications and Services, 2014
Market rating systems give Android users the opportunity to provide feedback on an application (a... more Market rating systems give Android users the opportunity to provide feedback on an application (app). Developers aspire for the highest ratings possible, as they reflect upon user perceptions of their apps. However, no mechanism exists to predict in any way the market rating of an app before publication. We downloaded and reverse-engineered 10,740 apps from the Slide Me market, and analyzed them using quality related metrics. We compared the results of the 1,000 highest rated apps against the lowest rated 1,000. Our results show that traditional white box quality metrics do little to distinguish the groups, while certain Android specific user-perspective metrics are useful in prediction.
Design reuse has more potential for increasin g the productivity of software development and main... more Design reuse has more potential for increasin g the productivity of software development and maintenance than does traditional approaches to software reuse. Current software developmen t methods do not promote design reuse. A design mapping method from an object-oriented requirements analysis to a design adhering to thes e principles is presented. The method involves tw o transformation steps and introduces four representation tools for conducting the transformations. The second step produces Ada specifications. Design templates are used. The method is applied to a sample problem.
Experiments were performed to measure the relationship of two software visualizations to software... more Experiments were performed to measure the relationship of two software visualizations to software comprehension. The Control Structure Diagram (CSD) was examined for its influence on aiding the comprehension of software source code, and the Complexity Profile Graph (CPG) was examined for its ability to measure source code comprehensibility. Test subjects were asked to respond to questions regarding a code specimen written in Java. Statistical analysis of the data collected from the first experiment revealed that the CSD was highly significant in enhancing the subject's performance in this program comprehension task. Similar analysis of data collected from the second experiment showed that the measure of complexity calculated by the CPG correlated with the amount of time required to correctly understand the source code. The CPG was found to cue the software developer to complex portions of the code that might require special attention; the CSD was found to aid in understanding specific details of the code. The results of these experiments along with the planned follow-on experiments promise to shed light on fundamental questions regarding the role software visualizations can play in program comprehensibility.
Except where reference is made to the work of others, the work described in this dissertation is ... more Except where reference is made to the work of others, the work described in this dissertation is my own or was done in collaboration with my advisory committee. This dissertation does not include proprietary or classified information. __________________________
Except where reference is made to the work of others, the work described in this thesis is my own... more Except where reference is made to the work of others, the work described in this thesis is my own or was done in collaboration with my advisory committee. This thesis does not include proprietary or classified information. _____________________________________
System dynamics (SD) is a methodology used to understand how systems change over time. In the 196... more System dynamics (SD) is a methodology used to understand how systems change over time. In the 1960s, the SD modeling technique was developed to solve long-term, chronic, dynamic industrial management problems; today, SD is applied to solve various business policies and strategic problems. A typical SD study focuses on understanding how the components of a system interact; how and why the dynamics of concern are generated; and how policies and decisions affect system performance. This paper presents a study which models a computer network as a systems dynamic model to explore cyber-attacks and the resulting system-level effects that might occur on host OSI layers, layer 4 and above, in the OSI model. Preliminary results indicate that by using system dynamic cyber security simulation an organization can imitate the attacker(s) activities in OSI layer 4 and above and assess (and/or mitigate) the system’s risk exposure. In this paper we are presenting a proof-of-concept SD model for app...
This paper presents our three years’ experience in designing and implementing a practitioner-cent... more This paper presents our three years’ experience in designing and implementing a practitioner-centered based undergraduate software engineering course. To engage the students in software engineering through active learning, we have adapted a single-person software process called Practitioner-Centered Software Engineering (PCSE). The objective of PCSE is to have individuals developers/students enact engineering activities at their own skill level, as opposed to dictating engineering activities in the traditional fashion. As such, PCSE is not a software process, but a framework for identifying an initial software process and modifying that process to meet specific, individual developer/student needs. We describe the implementation of the PCSE-based undergraduate software engineering course, and then present the challenges in successful implementation of PCSE-based pedagogy in undergraduate software engineering courses.
The sphere of malware attacks is expanding to engulf the compact world of smartphones. This paper... more The sphere of malware attacks is expanding to engulf the compact world of smartphones. This paper sheds light on exploitation tactics used by malware writers in designing iPhone applications that exploit the integrity of the victim's phone. Our interest is in the harder problem of malware on iPhones that are not jailbroken. Rise of the One-person Team Abstract. Truly viable software—mobile device apps, services, components—are being written by one-person teams, thus demonstrating the need for engineering discipline at the individual level. This article examines effort estimation for individuals and proposes a lightweight approach based on a synthesis of a number of concepts derived from existing team estimation practices. Software engineering is usually portrayed as a team activity, one where a myriad of technical players are choreographed to build a software solution to a complex problem. With such a per- spective, estimating the effort required to write software involves a top...
University computer science and software engineering curricula are oriented to conventional hardw... more University computer science and software engineering curricula are oriented to conventional hardware platforms. This presents an obstacle to teaching students how to develop software for mobile devices. Industry certification practices provide an insight into what is important in teaching software development for a particular class of mobile devices, cellular phones. Adapting such practices to classroom use can aid in bridging the learning gap between traditional and non-traditional platforms. 1. The problem: how to teach cellular phone software development Cellular phones have become indispensable tools for providing computation resources in a highly mobile package. An estimated 1.5 billion phones are in use today, with the number expected to grow to two billion by 2006 1 . These devices are so pervasive that many developed nations now have cellular communications infrastructures that are more reliable than their legacy land lines. In developed nations, particularly among students and young professionals, cellular phones are increasingly replacing traditional wired phones because they offer mobility, attractive calling rates, and digital services such as messaging and Internet facilities. Although phone calls are still the primary function of cell phones, these devices are increasingly viewed as mobile computers in their own right. They are equipped with processors that have the computational horsepower to organize address books, manage camera images, run games, and support a wide range of software applications once deemed the unique realm of the Personal Digital Assistant. Over 100,000 jobs in the American software industry involve writing software for mobile devices, with the number expected to triple in the next two years to a significant 11% of the software workforce 2 . The facts are plain: cell phones are a technology to be reckoned with. What are universities doing to equip their computer science and software engineering majors with skills necessary for developing software for such mobile devices? The answer is equally plain: very little 3 . Colleges teach students the principles of software development, but that instruction is oriented mostly to traditional hardware platforms. Developing software for mobile computers requires specific knowledge in working with hardware that is limited in speed, memory, power, and user interfaces. Mobile device software development is still very much a novelty; conventional university curricula do not address these areas to any depth.
The Internet of Things (IoT) is one of the most promising technologies in the era of information ... more The Internet of Things (IoT) is one of the most promising technologies in the era of information technology. IoT enables ubiquitous data collections and network communications to bring significant and indispensable convenience and intelligence both to daily life and industrial operations. However, IoT is still confronting a number of challenges and manifesting a series of issues that need to be addressed urgently. Counterfeit hardware, software faults, security issues during communication, system management difficulties, and data privacy issues are significant issues for current IoT infrastructure. Meanwhile, blockchain, as an emerging information technology, has attracted huge public interest and has shown significant promise because of its decentralization, transparency, and security. The features of blockchain seem to be an ideal match for IoT, and by applying blockchain to an IoT environment, some of the aforementioned weaknesses can be addressed. This paper's purpose is to introduce the use of blockchain in IoT applications. We present various challenges facing an IoT system and summarize the benefits of adopting blockchain into IoT infrastructure. We primarily focus on illustrating the blockchain applications in IoT with refined capabilities and enhanced security. To shed light on blockchain in IoT research, we also discuss limitations and future directions.
Today's systems are increasingly threatened by unanticipated change arising from volatility in us... more Today's systems are increasingly threatened by unanticipated change arising from volatility in user requirements, Information Technology (IT) refresh rates, and responses to security vulnerabilities. With the rapidly changing world of IT, long static development cycles of a Software Intensive System (SIS), a system in which software represents the largest segment in one or more of the following criteria: system development cost, system development risk, system functionality, or development time [1] may doom the system before development begins.
The relevance of use cases throughout the software development life cycle is considered in the co... more The relevance of use cases throughout the software development life cycle is considered in the context of an actual project. Extensions, called behavior case and test cases are proposed to address design and testing activities.
With funding from the Department of Defense, a research effort is underway to understand the meth... more With funding from the Department of Defense, a research effort is underway to understand the methods through which systems engineering learning and career interest may be increased among undergraduate and graduate engineering students. This research is being conducted in the context of 14 "capstone" projects, in most cases as an integrative culminating, project-based course, and in one case involving an entire SE graduate curriculum, involving teams of students working together on the development of a product or prototype that addresses a real Department of Defense need. Implemented as pilot projects in eight civilian and six military universities, these 14 institutions are piloting methods, materials, and approaches to create new courses, enhance existing courses, and adapt curricula, to embed, infuse, and augment systems engineering knowledge, skills, abilities, and behaviors, as defined by the SPRDE-SE/PSE Competency Model. This session will present an overview of the overall Systems Engineering Capstone research and findings to date, along with an overview and discussion of three different approaches to course design and preliminary student impacts.
Proceedings of the 46th Annual Southeast Regional Conference on XX, 2008
Along with the advances in wide-area network technologies and computer hardware, the increasing a... more Along with the advances in wide-area network technologies and computer hardware, the increasing availability of powerful computers and high speed networks are changing the high performance computing paradigm today. Recent related research has led to the emergence of a new paradigm known as grid computing. A major motivation of grid computing is to aggregate the power of widely distributed resources to provide services to users. Several unique characteristics of this paradigm make the development of grid software more challenging. In order to develop grid-aware applications, software engineering principles (e.g. software process, life-cycle model) for building conventional software must be adopted to cope with these challenges. Nowadays two kinds of software processes are frequently mentioned: heavyweight and lightweight. In this paper, we address the issues of comparing the two kinds of processes and selecting the better one for developing grid software. We choose to examine two well-known software processes: IEEE 1074 [6] and Extreme Programming [1], which respectively represents heavyweight process and lightweight process. They are first examined in detail and a comparison between them is conducted. Then we present a selection guide to choose the better methodology for a grid software project. Our analysis shows that lightweight software processes such as XP are more suitable for developing grid software.
The growing use of Object-Oriented Databases (OODBs) has necessitated the inclusion of OODBs in i... more The growing use of Object-Oriented Databases (OODBs) has necessitated the inclusion of OODBs in introductory database courses. Typically, such an analysis is conducted after the explication of the dominant industry standard: the Relational Database model (RDB). Like the RDB model, the OODB model can be easily motivated. Unlike the RDB model, an established data model with defined normal forms, the OODB model cannot be easily evaluated for "goodness". We address this deficiency by examining the criteria of coupling and cohesion in database design. This approach affords the instructor the ability to better present OODBs as well as the opportunity to re-emphasize critical software engineering concepts.
Proceedings 15th Conference on Software Engineering Education and Training (CSEE&T 2002)
This panel will consider the conditions under which software engineering degree programs are bein... more This panel will consider the conditions under which software engineering degree programs are being designed and implemented in the United States. The discussion will focus particularly on how these conditions are changing over time as more degree programs are implemented and general software engineering issues evolve. The panelists represent four undergraduate software engineering degree programs and also have experience with several graduate degree programs.
2006 IEEE Intelligent Transportation Systems Conference, 2006
Evacuation planning plays a significant role in building evacuation. The purpose of this paper is... more Evacuation planning plays a significant role in building evacuation. The purpose of this paper is to demonstrate how an evolutionary computation technique in the form of an Estimation of Distribution Algorithm can be used in evacuation planning. This technique is used to evolve the number and location of exits in order to minimize overall evacuation time and reduce the number of casualties and injuries. The algorithm is applied to three day-care layouts, classified as playroom, lunchroom, and classroom settings. The algorithm generates an optimal or near-optimal configuration, and results across several trials can be used to determine the probability that an exit is needed for each possible location. The best exit configurations are presented for each of the three layouts, and a brief analysis is discussed. Although evacuation planning presented in this paper is focused on room layouts, evolutionary computation techniques have the potential to be implemented in large-scale evacuation planning.
Proceedings of the 46th Annual Southeast Regional Conference on XX, 2008
The purpose of this paper is to examine the features of Extreme Programming (XP) and determine ho... more The purpose of this paper is to examine the features of Extreme Programming (XP) and determine how it can be applied to a single person team (i.e. a programmer who works mainly on his/her own as opposed to a programmer who works as a part of a well-integrated team). A software development process for a single person team, Personal Extreme Programming (PXP) is created. Process script for PXP is explained and the core practices of XP are compared with those of PXP.
Proceedings of the conference on TRI-ADA '90 - TRI-Ada '90, 1990
Rkhard R. Gross* David A. Urnphresst "It takes . . .15 to 20 years to ma.ture a [software] techno... more Rkhard R. Gross* David A. Urnphresst "It takes . . .15 to 20 years to ma.ture a [software] technology to the point that it can be popularized and disseminated to the community at large" [lo]. Education typically bea.rs a, large share of the blame. This paper critically examines education's role in the U.S. Air 'Force's 1930s insertion of Ada and Ada softwa.re engineering. It concludes that our principal error in the process was a failure to define "education" in a broad enough sense, to consider the educa,tional needs of the corporate Air Force ("insti t,u tional education") as well as those of the individuals in it. Lessons learned are summarized for applica.tion *Office of the Assistant Secretary of 1.h: Air 120rce (hcquisition), SAF/AQI<, Washington, DC 20330-lW0 'Department of Electrical and Computer Eugineeriug, Air Force Institute of Technology, ~~riglll.-l'ill,r.ersorl AFB, OH 45433-6583 'The views expressed herein are those ol' the authors and do not necessarily represent t,he corporate position of the U.S. Air Force Permimion to copy without fee all or part of this mate&l ia granted provided that the copiea are not made or distributed for direct commercial adrmtage, the ACM copyright notice and thrr title of the publication and ita date appear, and notice is yren that copying ia by permirrion of the Aaaocirtion for Com-yntin~ htu.hincry. To copy otherwise. or to republish, requires . fee ~rl/hr .psdk pcrmir*ion. to future technology insertion efforts.
Proceedings of the 6th International Conference on Mobile Computing, Applications and Services, 2014
Market rating systems give Android users the opportunity to provide feedback on an application (a... more Market rating systems give Android users the opportunity to provide feedback on an application (app). Developers aspire for the highest ratings possible, as they reflect upon user perceptions of their apps. However, no mechanism exists to predict in any way the market rating of an app before publication. We downloaded and reverse-engineered 10,740 apps from the Slide Me market, and analyzed them using quality related metrics. We compared the results of the 1,000 highest rated apps against the lowest rated 1,000. Our results show that traditional white box quality metrics do little to distinguish the groups, while certain Android specific user-perspective metrics are useful in prediction.
Design reuse has more potential for increasin g the productivity of software development and main... more Design reuse has more potential for increasin g the productivity of software development and maintenance than does traditional approaches to software reuse. Current software developmen t methods do not promote design reuse. A design mapping method from an object-oriented requirements analysis to a design adhering to thes e principles is presented. The method involves tw o transformation steps and introduces four representation tools for conducting the transformations. The second step produces Ada specifications. Design templates are used. The method is applied to a sample problem.
Experiments were performed to measure the relationship of two software visualizations to software... more Experiments were performed to measure the relationship of two software visualizations to software comprehension. The Control Structure Diagram (CSD) was examined for its influence on aiding the comprehension of software source code, and the Complexity Profile Graph (CPG) was examined for its ability to measure source code comprehensibility. Test subjects were asked to respond to questions regarding a code specimen written in Java. Statistical analysis of the data collected from the first experiment revealed that the CSD was highly significant in enhancing the subject's performance in this program comprehension task. Similar analysis of data collected from the second experiment showed that the measure of complexity calculated by the CPG correlated with the amount of time required to correctly understand the source code. The CPG was found to cue the software developer to complex portions of the code that might require special attention; the CSD was found to aid in understanding specific details of the code. The results of these experiments along with the planned follow-on experiments promise to shed light on fundamental questions regarding the role software visualizations can play in program comprehensibility.
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Papers by David Umphress