Are learning styles useful indicators to discover how students use Scrum for the first time?

Teaching agile practices is in the cutting-edge of Software Engineering education since agile methodologies are widely used in the industry. An effective strategy to teach agile practices is the use of a capstone project, in which students develop requirements following an agile methodology. To improve students’ learning experience, professors have to keep track and analyze the information generated by the students during the capstone project development. The problem here arises from the large amount of information generated in the learning process, which hinders professors to meet each student’s learning profile. Particularly, to know the students skills and preferences are key aspects on a learner-centered approach of education in order to personalize the teaching. In this work, we aim to discover the relationships between students’ performance along a Scrum-based capstone project and their learning style according to the Felder–Silverman model, towards a first step to build the profiles. To address this issue, we mined association rules from the interaction of 33 Software Engineering students with Virtual Scrum, a tool that supports the development of the capstone project in the course. In the present work we describe promising results in experiments with a case-study.     

软件可靠性评估工具

软件可靠性评估工具是软件可靠性工程中的重要分析手段,大大地简化了可靠性度量及模型比较的繁复工作。文章综述和分析了目前国外市场上几种广泛应用的软件可靠性评估工具;对每一种工具作出简述,在对这些工具作比较分析的基础上给出了选择工具的一般性原则。     

Operational release planning in large-scale Scrum with multiple stakeholders – A longitudinal case study at F-Secure Corporation

ContextThe analysis and selection of requirements are important parts of any release planning process. Previous studies on release planning have focused on plan-driven optimization models. Unfortunately, solving the release planning problem mechanistically is difficult in an agile development context.ObjectiveWe describe how a release planning method was employed in two case projects in F-Secure, a large Finnish software company. We identify the benefits which the projects gained from the method, and analyze challenges in the cases and improvements made to the method during the case projects.MethodWe observed five release planning events and four retrospectives and we conducted surveys in the first two events. We conducted six post-project interviews. We conjoined the observation notes, survey results and interviews and analyzed them qualitatively and quantitatively.ResultsThe focal point of the method was release planning events where the whole project organization gathered to plan the next release. The planning was conducted by the development teams in close collaboration with each other and with the other stakeholders. We identified ten benefits which included improved communication, transparency, dependency management and decision making. We identified nine challenges which included the lacking preparation and prioritization of requirements, unrealistic schedules, insufficient architectural planning and lacking agile mindset. The biggest improvements to the method were the introduction of frequent status checks and a big visible planning status board.ConclusionThe release planning method ameliorated many difficult characteristics of the release planning problem but its efficiency was negatively affected by the performing organization that was in transition from a plan-driven to an agile development mindset. Even in this case the benefits clearly outweighed the challenges and the method enabled the early identification of the issues in the project.     

关于《软件工程》课程教学中条件覆盖方法的讨论

软件测试是软件开发的一个重要环节，也是《软件工程》课程教学的一个重要内容。本文主要介绍了一类白盒法—逻辑覆盖测试方法，并结合一个例子重点讨论了运用条件覆盖测试方法设计测试用例的各种方案，还将条件覆盖方法与语句覆盖方法、判定覆盖方法作了深入、细致的比较。     

敏捷型方法在软件工程中的运用

本文介绍了敏捷型软件工程方法的概况,出现的背景,以及举出敏捷型方法示例,结合实际系统开发中的经验,说明软件工程方法学的最新发展.     

Blending Scrum practices and CMMI project management process areas

Software development organizations that have been employing capability maturity models, such as SW-CMM or CMMI for improving their processes are now increasingly interested in the possibility of adopting agile development methods. In the context of project management, what can we say about Scrum’s alignment with CMMI? The aim of our paper is to present the mapping between CMMI and the agile method Scrum, showing major gaps between them and identifying how organizations are adopting complementary practices in their projects to make these two approaches more compliant. This is useful for organizations that have a plan-driven process based on the CMMI model and are planning to improve the agility of processes or to help organizations to define a new project management framework based on both CMMI and Scrum practices.     

级限编程（XP）在工程质量监管系统中的应用

“极限编程”（extreme Programming．简称XP）是目前最流行的敏捷软件开发方法（Agile Software Development，ASD）。通过XP在实际项目中的应用“实践”，本文将对XP的理论和实践方法进行探讨．并衡量XP方法在项目中的应用效果，给出实际应用XP方法的一些建议。     

Scrum方法在企业档案管理系统开发中的应用

在江苏省工商局企业档案管理系统的开发过程中,对Scrum方法进行改进和扩展,使之能够适用于开发经验和项目管理经验不足的团队。论述使用Scrum方法中可能遇到的问题及解决办法,为Scrum的实施提供有益的参考和借鉴。     

Using Scrum to guide the execution of software process improvement in small organizations

For software process improvement - SPI - there are few small organizations using models that guide the management and deployment of their improvement initiatives. This is largely because a lot of these models do not consider the special characteristics of small businesses, nor the appropriate strategies for deploying an SPI initiative in this type of organization. It should also be noted that the models which direct improvement implementation for small settings do not present an explicit process with which to organize and guide the internal work of the employees involved in the implementation of the improvement opportunities. In this paper we propose a lightweight process, which takes into account appropriate strategies for this type of organization. Our proposal, known as a “Lightweight process to incorporate improvements”, uses the philosophy of the Scrum agile method, aiming to give detailed guidelines for supporting the management and performance of the incorporation of improvement opportunities within processes and their putting into practice in small companies. We have applied the proposed process in two small companies by means of the case study research method, and from the initial results, we have observed that it is indeed suitable for small businesses.     

Software reliability — what is it?

Software has become a household necessity in today's world but little has been done to measure its reliability for the consumer. Since software failure has a different basis than hardware failure, existing reliability theory cannot be applied directly: a new software unique theory needs to be defined. Current software practice relies on software quality measures to describe software reliability but recent work has identified both theory and practice for appropriate software reliability analysis. This paper discusses: the need for software reliability analysis in order to more accurately describe system reliability, the shortcomings of current practice, and both the direction of new work in, and the future roles for, software reliability analysis.     

Scrum方法在企业档案管理系统开发中的应用

在江苏省工商局企业档案管理系统的开发过程中,对Scmm方法进行改进和扩展．使之能够适用于开发经验和项目管理经验不足的团队。论述使用Scmm方法中可能遇到的问题及解决办法,为Scrum的实施提供有益的参考和借鉴。     

软件测试过程分析

分析了传统软件测试的不足,阐述尽早开始测试的必要性,总结出系统测试过程所需经历的阶段——计划、设计、执行和评估。结合瀑布模型,分析了测试与开发并行工作的过程,在此基础上建立了软件测试阶段及其与软件开发各阶段的关系模型。     

Agile methods rapidly replacing traditional methods at Nokia: A survey of opinions on agile transformation

Context

Many organizations have started to deploy agile methods, but so far there exist only a few studies on organization-wide transformations. Are agile methods here to stay? Some claim that agile software development methods are in the mainstream adoption phase in the software industry, while others hope that those are a passing fad. The assumption here is that if agile would not provide real improvement, adopters would be eager at first but turn pessimistic after putting it into practice.

Objective

Despite the growing amount of anecdotal evidence on the success of agile methods across a wide range of different real-life development settings, scientific studies remain scarce. Even less is known about the perception of the impacts of agile transformation when it is deployed in a very large software development environment, and whether agile methods are here to stay. This study aims to fill that gap by providing evidence from a large-scale agile transformation within Nokia. While we have yet to confirm these findings with solid quantitative data, we believe that the perception of the impacts already pinpoints the direction of the impacts of large-scale agile transformation.

Method

The data were collected using a questionnaire. The population of the study contains more than 1000 respondents in seven different countries in Europe, North America, and Asia.

Results

The results reveal that most respondents agree on all accounts with the generally claimed benefits of agile methods. These benefits include higher satisfaction, a feeling of effectiveness, increased quality and transparency, increased autonomy and happiness, and earlier detection of defects. Finally, 60% of respondents would not like to return to the old way of working.

Conclusion

While the perception of the impact of agile methods is predominantly positive, several challenge areas were discovered. However, based on this study, agile methods are here to stay.     

日志分析法在一卡通系统测试中的应用*

针对一卡通系统测试中因输出结果数量大、系统关联复杂、测试准则构造困难等因素而导致的难以判断输出结果正确性的问题,提出了扩展日志分析法。介绍了实现该方法的系统结构和所使用的测试状态机,引入了一种自行开发的支持层次化状态机、具有执行自定义函数功能的状态机定义语言,增强了扩展日志分析法测试复杂大型系统的能力。该方法在一卡通系统测试中得到了应用。     

面向静态分析的软件测试工具评估方法研究

软件是否可靠运行将直接影响系统的可靠运行,急需有手段保障软件质量。静态分析因具有全自动运行、能更早实施、不需要执行程序等特点,在软件测试领域得到了广泛的使用,已成为保障软件质量的重要手段。测试工具可以极大地提高软件测试的效率。目前面向静态分析的软件测试工具数量众多,不同的工具具有不同的特点和缺陷检测能力,且都存在不低的误报率和漏报率,如何评估和选择测试工具成为软件静态分析时亟待解决的问题。基于CWE缺陷类型的基准测试集和精确度、召回率、F1-Score、CWE覆盖率以及Overall-Score的评估指标,详细阐述了面向静态分析的软件测试工具评估流程,结合CppCheck、TscanCode和Flawfinder三个开源软件静态分析工具开展了案例应用,为软件静态分析工具的评估与选择提供指导和参考。     

一种软件可靠性的随机测试模型研究

本文提出一种基于随机测试模型的软件可靠性测试方法、评判准则和测试策略,并利用蒙特卡罗方法进行了分析。通过实例证明了该模型在软件测试中的实用性和有效性,使用该模型可以提高软件测试的准确性和正确率、缩短软件测试的周期。