As the increasing popularity and complexity of Web applications and the emergence of their new characteristics, the testing and maintenance of large, complex Web applications are becoming more complex and difficult. W...As the increasing popularity and complexity of Web applications and the emergence of their new characteristics, the testing and maintenance of large, complex Web applications are becoming more complex and difficult. Web applications generally contain lots of pages and are used by enormous users. Statistical testing is an effective way of ensuring their quality. Web usage can be accurately described by Markov chain which has been proved to be an ideal model for software statistical testing. The results of unit testing can be utilized in the latter stages, which is an important strategy for bottom-to-top integration testing, and the other improvement of extended Markov chain model (EMM) is to present the error type vector which is treated as a part of page node. this paper also proposes the algorithm for generating test cases of usage paths. Finally, optional usage reliability evaluation methods and an incremental usability regression testing model for testing and evaluation are presented. Key words statistical testing - evaluation for Web usability - extended Markov chain model (EMM) - Web log mining - reliability evaluation CLC number TP311. 5 Foundation item: Supported by the National Defence Research Project (No. 41315. 9. 2) and National Science and Technology Plan (2001BA102A04-02-03)Biography: MAO Cheng-ying (1978-), male, Ph.D. candidate, research direction: software testing. Research direction: advanced database system, software testing, component technology and data mining.展开更多
To support multi-factor decision problems about usability evaluation, especially when studies fall short of comparable objects, a fuzzy synthetic evaluation model is explored in this paper. Grey relational analysis （...To support multi-factor decision problems about usability evaluation, especially when studies fall short of comparable objects, a fuzzy synthetic evaluation model is explored in this paper. Grey relational analysis （GRA） is brought in the model to calculate weight vectors of the usability factors. And membership functions of a remark vector are constructed in the context of use of the operation interface. The present method is applied in usability evaluation of operation interface and is proved to be effective. The comprehensive usability gradation of the operation interface to good is 0. 616 4 that meets the requirements in practice.展开更多
Usability is a vital characteristic in operating medical machines, especially radiological machines, such as computed tomography (CT) scans and X-rays. The more the body is exposed to it, the greater the negative effe...Usability is a vital characteristic in operating medical machines, especially radiological machines, such as computed tomography (CT) scans and X-rays. The more the body is exposed to it, the greater the negative effect has. If usability is crucial to a specific industry, it is more crucial in the medical health industry due to its tremendous effect on safety and the patient’s health. This study examines the usability of CT scans based on 14 attributes from hospitals across Saudi Arabia. The study revealed that usability consistency, visibility, minimalism, memory, and flexibility have the most usability catastrophic complaints, where the overall catastrophic rate exceeds 20%. Creating a shortcut for frequently used operations is critically important, because it has a fundamental effect in minimizing physical and mental exertion.展开更多
Design for manufacturing, design for assembly, and, in general, design for X, are methods helping an effective generation of industrial products. In parallel with the development of these methods, the research about u...Design for manufacturing, design for assembly, and, in general, design for X, are methods helping an effective generation of industrial products. In parallel with the development of these methods, the research about usability engineering has generated many important results, both from the design, and the evaluation and testing points of view. The research described in this paper aims at evaluating the feasibility of the integration of two new usability methods, the design for innovative usability - DFIU -, and the integrated method for usability evaluation and testing - IMUET -, in an existing design for X named design guidelines collaborative framework - DGLs-CF -. Indeed, the DGLs-CF is a design for multi-X method, given that it covers both the manufacturing and the verification phases of the industrial product lifecycle. All these methods are currently under development by the author’s research group. To evaluate this feasibility, the first task of the research aims at describing and classifying the components of the three methods. Next, these components are semantically related to each other. Finally, the last activity verifies the compatibility between the components of the two usability methods and the data structures of the DGLs-CF to check the feasibility from the implementation point of view. The result of this research will consist of precise indications both for the development of a design for multi-X collaborative framework covering homogeneously the design, manufacturing, verification, and use phases of the industrial product lifecycle, and to be used as a reference for researchers interested in considering the integration of usability issues in their design tools, methods, and processes.展开更多
The use of mobile phone applications for our touristic activity is very common nowadays with the simplification of smartphones. The tourism mobile applications currently can be argued to be one of the most useful appl...The use of mobile phone applications for our touristic activity is very common nowadays with the simplification of smartphones. The tourism mobile applications currently can be argued to be one of the most useful applications that can facilitate the movement of travelers. However, existing usability evaluation metrics are too general to be applied to a more specific application, such as mobile tourism application. Thus, the objective of the study is to propose usability evaluation metrics for tourism mobile applications. The study employs four phases: identifying problem and the objective, encompassing the techniques of developing usability measurement of metrics, selecting the usability metrics of tourism mobile application and conducting expert review and verification. The verification phase was conducted using expert review approach to measure the proposed metrics in terms of its consistency ease of use, understandable, verifiable and overall impression. The finding revealed that the proposed metrics have been well received by the experts in terms of consistency, ease to use, understandable, verifiability and overall impression. Finally, this study presented usability metrics for the tourism mobile applications that can be used by designers or usability practitioners in creating a useable mobile application for the tourists.展开更多
Previous mobile usability studies are only pertinent in the context of ergonomics,physical user interface,and mobility aspects.In addition,much of the previous mobile usability conception was built on desktop co...Previous mobile usability studies are only pertinent in the context of ergonomics,physical user interface,and mobility aspects.In addition,much of the previous mobile usability conception was built on desktop computing measurements,such as desktop and web application checklists,or scarcely addressed the mobile user interface.Moreover,the studies focus mainly on interface features for desktop applications and do not reflect comprehensive mobile interface features such as navigation drawers and spinners.Therefore,conducting usability evaluation using conventional usability measurement would result in irrelevant results.In addition,the resulting works are tailored for usability testing,which requires highly skilled evaluators and usability specialists(e.g.,usability testers and user experience designers),who are rarely integrated into a development team.The lack of expertise could lead to unreliable usability evaluations.This paper presents a review from industrial experts on a comprehensive and feasible usability evaluation framework developed in our previous work.The framework is dedicated to smartphone apps,which integrate evaluator skills and design concerns.However,there is no evidence of its usefulness in practice.Therefore,the usefulness of the framework measurement for evaluating apps’usability in the eyes of non-usability specialists is empirically assessed in this paper through an expert review.The expert review involved eleven industrial developers and was complemented by a semi-structured interview.The method is replicated in comparison with a framework from another study.The findings show that the formulated framework significantly outperformed the framework(p=0.0286)from other studies with large effect sizes(r=1.81)in terms of usefulness.展开更多
The study aims to propose using a universal heuristic evaluation model （UHEM） to improve the functional and physical performance of residential buildings. Since, ＂everyone should be able to enter and use any part o...The study aims to propose using a universal heuristic evaluation model （UHEM） to improve the functional and physical performance of residential buildings. Since, ＂everyone should be able to enter and use any part of the built environment as independently and naturally as possible＂, the old buildings should be revitalized with respect to an inclusive approach. However, research on current design practice showed that there is a lack of systematic evaluation and revitalization methods. Hence, the main objective of the proposed UHEM model is to evaluate existing residential environments and requalify them with respect to an inclusive approach. The study concludes by highlighting the importance of UHEM from two points of view： （i） the importance of a systematic evaluation approach to effectively deal with the challenge of requalifying the residential environments and （ii） the designers＇ key role during the revitalization process.展开更多
目的 以用户体验为中心,了解监护室中心静脉导管相关血流感染防控数据管理平台的可用性,为其推广奠定基础。方法 2024年9-11月,采用目的抽样法选择上海、山东、四川、南通等地共7所三级医院的11名重症监护室(intensive care unit, ICU)...目的 以用户体验为中心,了解监护室中心静脉导管相关血流感染防控数据管理平台的可用性,为其推广奠定基础。方法 2024年9-11月,采用目的抽样法选择上海、山东、四川、南通等地共7所三级医院的11名重症监护室(intensive care unit, ICU)临床护士和6名ICU护士长参加平台用户测试并进行使用体验访谈。2024年11月,采用便利抽样法选择164名使用过平台的ICU护士填写研究后系统可用性问卷(post-study system usability questionnaire, PSSUQ),以评估用户对平台的满意度。结果 17名平台用户完成了7项测试任务并接受访谈后反馈平台使用的整体感觉较好,各项功能完善,该平台的应用对于临床护理及医疗决策有重要的意义;同时也对平台的不足之处提出了意见。接受问卷调查的164名ICU护士PSSUQ得分为(2.02±1.12)分。结论 平台整体可用性良好,值得推广,未来需要进一步优化。展开更多
文摘As the increasing popularity and complexity of Web applications and the emergence of their new characteristics, the testing and maintenance of large, complex Web applications are becoming more complex and difficult. Web applications generally contain lots of pages and are used by enormous users. Statistical testing is an effective way of ensuring their quality. Web usage can be accurately described by Markov chain which has been proved to be an ideal model for software statistical testing. The results of unit testing can be utilized in the latter stages, which is an important strategy for bottom-to-top integration testing, and the other improvement of extended Markov chain model (EMM) is to present the error type vector which is treated as a part of page node. this paper also proposes the algorithm for generating test cases of usage paths. Finally, optional usage reliability evaluation methods and an incremental usability regression testing model for testing and evaluation are presented. Key words statistical testing - evaluation for Web usability - extended Markov chain model (EMM) - Web log mining - reliability evaluation CLC number TP311. 5 Foundation item: Supported by the National Defence Research Project (No. 41315. 9. 2) and National Science and Technology Plan (2001BA102A04-02-03)Biography: MAO Cheng-ying (1978-), male, Ph.D. candidate, research direction: software testing. Research direction: advanced database system, software testing, component technology and data mining.
基金supported by the Ph. D. Programs Foundation of Ministry of Education of China under Grant No. 20070968063
文摘To support multi-factor decision problems about usability evaluation, especially when studies fall short of comparable objects, a fuzzy synthetic evaluation model is explored in this paper. Grey relational analysis （GRA） is brought in the model to calculate weight vectors of the usability factors. And membership functions of a remark vector are constructed in the context of use of the operation interface. The present method is applied in usability evaluation of operation interface and is proved to be effective. The comprehensive usability gradation of the operation interface to good is 0. 616 4 that meets the requirements in practice.
文摘Usability is a vital characteristic in operating medical machines, especially radiological machines, such as computed tomography (CT) scans and X-rays. The more the body is exposed to it, the greater the negative effect has. If usability is crucial to a specific industry, it is more crucial in the medical health industry due to its tremendous effect on safety and the patient’s health. This study examines the usability of CT scans based on 14 attributes from hospitals across Saudi Arabia. The study revealed that usability consistency, visibility, minimalism, memory, and flexibility have the most usability catastrophic complaints, where the overall catastrophic rate exceeds 20%. Creating a shortcut for frequently used operations is critically important, because it has a fundamental effect in minimizing physical and mental exertion.
文摘Design for manufacturing, design for assembly, and, in general, design for X, are methods helping an effective generation of industrial products. In parallel with the development of these methods, the research about usability engineering has generated many important results, both from the design, and the evaluation and testing points of view. The research described in this paper aims at evaluating the feasibility of the integration of two new usability methods, the design for innovative usability - DFIU -, and the integrated method for usability evaluation and testing - IMUET -, in an existing design for X named design guidelines collaborative framework - DGLs-CF -. Indeed, the DGLs-CF is a design for multi-X method, given that it covers both the manufacturing and the verification phases of the industrial product lifecycle. All these methods are currently under development by the author’s research group. To evaluate this feasibility, the first task of the research aims at describing and classifying the components of the three methods. Next, these components are semantically related to each other. Finally, the last activity verifies the compatibility between the components of the two usability methods and the data structures of the DGLs-CF to check the feasibility from the implementation point of view. The result of this research will consist of precise indications both for the development of a design for multi-X collaborative framework covering homogeneously the design, manufacturing, verification, and use phases of the industrial product lifecycle, and to be used as a reference for researchers interested in considering the integration of usability issues in their design tools, methods, and processes.
文摘The use of mobile phone applications for our touristic activity is very common nowadays with the simplification of smartphones. The tourism mobile applications currently can be argued to be one of the most useful applications that can facilitate the movement of travelers. However, existing usability evaluation metrics are too general to be applied to a more specific application, such as mobile tourism application. Thus, the objective of the study is to propose usability evaluation metrics for tourism mobile applications. The study employs four phases: identifying problem and the objective, encompassing the techniques of developing usability measurement of metrics, selecting the usability metrics of tourism mobile application and conducting expert review and verification. The verification phase was conducted using expert review approach to measure the proposed metrics in terms of its consistency ease of use, understandable, verifiable and overall impression. The finding revealed that the proposed metrics have been well received by the experts in terms of consistency, ease to use, understandable, verifiability and overall impression. Finally, this study presented usability metrics for the tourism mobile applications that can be used by designers or usability practitioners in creating a useable mobile application for the tourists.
基金partially funded by the Research University Grant Scheme(RUGS),Universiti Putra Malaysia(UPM).
文摘Previous mobile usability studies are only pertinent in the context of ergonomics,physical user interface,and mobility aspects.In addition,much of the previous mobile usability conception was built on desktop computing measurements,such as desktop and web application checklists,or scarcely addressed the mobile user interface.Moreover,the studies focus mainly on interface features for desktop applications and do not reflect comprehensive mobile interface features such as navigation drawers and spinners.Therefore,conducting usability evaluation using conventional usability measurement would result in irrelevant results.In addition,the resulting works are tailored for usability testing,which requires highly skilled evaluators and usability specialists(e.g.,usability testers and user experience designers),who are rarely integrated into a development team.The lack of expertise could lead to unreliable usability evaluations.This paper presents a review from industrial experts on a comprehensive and feasible usability evaluation framework developed in our previous work.The framework is dedicated to smartphone apps,which integrate evaluator skills and design concerns.However,there is no evidence of its usefulness in practice.Therefore,the usefulness of the framework measurement for evaluating apps’usability in the eyes of non-usability specialists is empirically assessed in this paper through an expert review.The expert review involved eleven industrial developers and was complemented by a semi-structured interview.The method is replicated in comparison with a framework from another study.The findings show that the formulated framework significantly outperformed the framework(p=0.0286)from other studies with large effect sizes(r=1.81)in terms of usefulness.
文摘The study aims to propose using a universal heuristic evaluation model （UHEM） to improve the functional and physical performance of residential buildings. Since, ＂everyone should be able to enter and use any part of the built environment as independently and naturally as possible＂, the old buildings should be revitalized with respect to an inclusive approach. However, research on current design practice showed that there is a lack of systematic evaluation and revitalization methods. Hence, the main objective of the proposed UHEM model is to evaluate existing residential environments and requalify them with respect to an inclusive approach. The study concludes by highlighting the importance of UHEM from two points of view： （i） the importance of a systematic evaluation approach to effectively deal with the challenge of requalifying the residential environments and （ii） the designers＇ key role during the revitalization process.
文摘目的 以用户体验为中心,了解监护室中心静脉导管相关血流感染防控数据管理平台的可用性,为其推广奠定基础。方法 2024年9-11月,采用目的抽样法选择上海、山东、四川、南通等地共7所三级医院的11名重症监护室(intensive care unit, ICU)临床护士和6名ICU护士长参加平台用户测试并进行使用体验访谈。2024年11月,采用便利抽样法选择164名使用过平台的ICU护士填写研究后系统可用性问卷(post-study system usability questionnaire, PSSUQ),以评估用户对平台的满意度。结果 17名平台用户完成了7项测试任务并接受访谈后反馈平台使用的整体感觉较好,各项功能完善,该平台的应用对于临床护理及医疗决策有重要的意义;同时也对平台的不足之处提出了意见。接受问卷调查的164名ICU护士PSSUQ得分为(2.02±1.12)分。结论 平台整体可用性良好,值得推广,未来需要进一步优化。
