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Context: In organizational psychology literature, Task Variety and Skill Variety are considered different aspects of work design. Albeit related to different aspects of the work, it is common to find strong correlations between these constructs. After applying the Work Design Questionnaire (WDQ) on a sample of 102 software professional, we found the similar correlations and conjectured that they were...
The value of a software product diminishes due to emerging new requirements and gradual changes in system usage patterns over its lifespan, including other direct or indirect impacts from the surrounding environment. Often new requirements or changes cannot be addressed instantly; therefore, the system becomes less effective with incompatible or unused features, gradually degrading the overall value...
Due to the fact that software development is a product of team effort it is important to investigate the influence of group developmental psychology on software development performance. In this case study we wanted to test how performance (i.e. velocity and planning effectiveness) are related to the group's maturity level. We gave the Group Development Questionnaire (the GDQ) to 19 software developers...
Simple Function Point is a functional size measurement method that can be used in place of IFPUG Function Point, but requires a much simpler - hence less time and effort consuming - measurement process. Simple Function Point was designed to be equivalent to IFPUG Function Point in terms of numerical results. This paper reports an empirical study aiming at verifying the effectiveness of Simple Function...
Companies have employed for years 1st generation Functional Size Measurement (FSM) methods, e.g., IF PUG Function Points Analysis (FPA), collecting IF PUG-based historical data useful for benchmarking and estimation purposes. With the advent of 2nd generation FSM methods (e.g., COSMIC) the need for resizing past projects utilizing these new measures arises. The adoption of 2nd generation FSM methods...
Modern software development relies on incremental delivery to facilitate quick response to customers' requests. In this dynamic environment the continuous modifications of software code can cause risks for software developers; when developing a new feature increment, the added or modified code may contain fault-prone or difficult-to-maintain elements. The outcome of these risks can be defective software...
This paper presents the results of an exploratory research study that investigates factors contributing to preference for the agile software development approaches. The initial exploration revolves around the Five Factor Model of personality and the premise that these personality factors provide a partial explanation of preference for an agile approach. A survey instrument for measuring the preference...
Today, software projects are often characterized by poor quality, schedule overruns and high costs. One of the reasons for this failure is the lack of holistic information available for making suitable corrective actions. So an effective measurement framework which is empirically validated by the project stakeholders is needed to control the project and give directions to accomplish the project goals...
Most of the focus in business process modeling (BPM) is on activity-centric; however an emerging approach in the field is entity-centric which benefits from various enhancements in contrast to former approaches. As a consequence, entity-centric business services as the external view of a group of business processes within an organization are getting more importance in contrast to the other types of...
There are different levels of engagement in social relations between persons. Using a single data set for measuring social relations may, however, lead to fallacious results, while using multiple data sets the threat of fallacy can be reduced and the nature of different kind of social relations examined. This paper presents the OtaSizzle research platform for combining multiple data sets and measuring...
Software engineering process information extracted from version control systems and bug tracking databases are widely used in empirical software engineering. In prior work, we showed that these data are plagued by quality deficiencies, which vary in its characteristics across projects. In addition, we showed that those deficiencies in the form of bias do impact the results of studies in empirical...
Nuclear cataract is the most common type of age-related cataract and it is clinically diagnosed using slit-lamp images. Objective measurement of the features in slit-lamp image is investigated using a computerized software system. The correlation between the features and the nuclear cataract grades is analyzed. Experimental results show that intensity of sulcus, color in the lens and nucleus region,...
Various measures and methods have been developed to measure the sizes of different software entities produced throughout the software life cycle. Understanding the nature of the relationship between the sizes of these products has become significant due to various reasons. One major reason is the ability to predict the size of the later phase products by using the sizes of early life cycle products...
Research has provided evidence that type usage in source files is correlated with the risk of failure of software components. Previous studies that investigated the correlation between type usage and component failure assigned equal blame to all the types imported by a component with a failure history, regardless of whether a type is used in the component, or associated to its failures. A failure-prone...
This article describes a survey which aims to identify the relative importance of a set of factors that affect the motivation of software engineers at work. The conceptual underpinnings of human motivation used in the research are the expectancy theory and the motivation-hygiene theory. In the study, a survey was conducted involving 176 software engineers from the State of Pernambuco, Brazil. Data...
The fact that Albrecht's function point method must be frequently improved or adjusted to suit new development contexts shows that there is a need for a new approach to early estimate effort. Such approach should reduce the estimation error and it is convenient for it to be based on use cases. The authors defined two simple metrics which capture two key aspects of software applications, size and complexity,...
Test coverage is a promising measure of test effectiveness and development organizations are interested in cost-effective levels of coverage that provide sufficient fault removal with contained testing effort. We have conducted a multiple-case study on two dissimilar industrial software projects to investigate if test coverage reflects test effectiveness and to find the relationship between test effort...
In an empirical study of fourteen widely used open source PHP Web applications, we found that the vulnerability density of the aggregate code base decreased from 8.88 vulnerabilities/KLOC to 3.30 from Summer 2006 to Summer 2008. Individual web applications varied widely, with vulnerability densities ranging from 0 to 121.4 at the beginning of the study. While the total number of security problems...
End user satisfaction of software or information system is an important research topic. However, existing research has been focused on questionnaire and indicators selection. An important issue has not been paid enough attention so far is that the traditional method is hardly suitable in Web 2.0, which user using pattern and software runtime environment have changed. In this paper, we present a new...
The paper describes an effective method for control software testing. Starting from a previous release, the authors propose a proper update of their testing methodology to make it feasible for a new class of software. More in depth, the testing methodology was designed to generate a set of input combinations (so-called test cases), each one accounting for the interdependence in terms of amplitude...
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