Leandro Antonelli, Mariángeles Hozikian, Guy Camilleri, Alejandro Fernandez, Julian Grigera, Diego Torres and Pascale Zarate
The design of tests is a very important step in the software development process because it allows us to match the users’ expectations with the finished product. Considered as a…
Abstract
Purpose
The design of tests is a very important step in the software development process because it allows us to match the users’ expectations with the finished product. Considered as a cumbersome activity, efforts have been made to automatize and alleviate the burden of test generation, but it is still a largely neglected step. The study aims to propose taking advantage of existing requirement artifacts, like scenarios that describe the dynamic of the domain in a very early stage of software development, to obtain tests from them.
Design/methodology/approach
In particular, the approach proposed complement the scenarios that are textually described with a glossary, the language extended lexicon. Thus, a set of rules to derive tests from scenarios is also proposed. The tests are then described using the task/method model.
Findings
The main findings of this study consist of an extension of a previously presented set of rules. And, a tool based on a media wiki platform that makes possible to record scenarios and the language extended lexicon and implement the rules to obtain the tests.
Originality/value
The main originality of this study is the glossary which complements scenarios, the semantic support to obtain tests and the tool to automatize the approach.
Leandro Antonelli, Guy Camilleri, Diego Torres and Pascale Zarate
This article proposes a strategy to make the testing step easier, generating user acceptance tests (UATs) in an automatic way from requirements artifacts.
Abstract
Purpose
This article proposes a strategy to make the testing step easier, generating user acceptance tests (UATs) in an automatic way from requirements artifacts.
Design/methodology/approach
This strategy is based on two modeling frameworks: scenarios and task/method paradigm. Scenarios are a requirement artifact used to describe business processes and requirements, and task/method paradigm is a modeling paradigm coming from the artificial intelligence field. The proposed strategy is composed of four steps. In the first step, scenarios are described through a semantic wiki website. Then scenarios are automatically translated into a task/method model (step two). In the third step, the task/method model obtained in step two is executed in order to produce and store all possible achievements of tasks and thus scenarios. The stored achievements are saved in a data structure called execution tree (ET). Finally, from this ET (step four), the UATs are generated.
Findings
The feasibility of this strategy is shown through a case study coming from the agriculture production systems field.
Originality/value
Generally, test design approaches deal with a small number of variables describing one specific situation where a decision table or workflow is used to design tests. The proposed approach can deal with many variables because the authors rely on scenarios that can be composed in order to obtain a tree with all the testing paths that can arise from their description.
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It has been usual to prefer an enrichment pattern independent of the mesh when applying singular functions in the Generalized/eXtended finite element method (G/XFEM). This choice…
Abstract
Purpose
It has been usual to prefer an enrichment pattern independent of the mesh when applying singular functions in the Generalized/eXtended finite element method (G/XFEM). This choice, when modeling crack tip singularities through extrinsic enrichment, has been understood as the only way to surpass the typical poor convergence rate obtained with the finite element method (FEM), on uniform or quasi-uniform meshes conforming to the crack. Then, the purpose of this study is to revisit the topological enrichment strategy in the light of a higher-order continuity obtained with a smooth partition of unity (PoU). Aiming to verify the smoothness' impacts on the blending phenomenon, a series of numerical experiments is conceived to compare the two GFEM versions: the conventional one, based on piecewise continuous PoU's, and another which considers PoU's with high-regularity.
Design/methodology/approach
The stress approximations right at the crack tip vicinity are qualified by focusing on crack severity parameters. For this purpose, the material forces method originated from the configurational mechanics is employed. Some attempts to improve solution using different polynomial enrichment schemes, besides the singular one, are discussed aiming to verify the transition/blending effects. A classical two-dimensional problem of the linear elastic fracture mechanics (LEFM) is solved, considering the pure mode I and the mixed-mode loadings.
Findings
The results reveal that, in the presence of smooth PoU's, the topological enrichment can still be considered as a suitable strategy for extrinsic enrichment. First, because such an enrichment pattern still can treat the crack independently of the mesh and deliver some advantage in terms of convergence rates, under certain conditions, when compared to the conventional FEM. Second, because the topological pattern demands fewer degrees of freedom and impacts conditioning less than the geometrical strategy.
Originality/value
Several outputs are presented, considering estimations for the
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Jéderson da Silva, Jucélio Tomás Pereira and Diego Amadeu F. Torres
The purpose of this paper is to propose a new scheme for obtaining acceptable solutions for problems of continuum topology optimization of structures, regarding the distribution…
Abstract
Purpose
The purpose of this paper is to propose a new scheme for obtaining acceptable solutions for problems of continuum topology optimization of structures, regarding the distribution and limitation of discretization errors by considering h-adaptivity.
Design/methodology/approach
The new scheme encompasses, simultaneously, the solution of the optimization problem considering a solid isotropic microstructure with penalization (SIMP) and the application of the h-adaptive finite element method. An analysis of discretization errors is carried out using an a posteriori error estimator based on both the recovery and the abrupt variation of material properties. The estimate of new element sizes is computed by a new h-adaptive technique named “Isotropic Error Density Recovery”, which is based on the construction of the strain energy error density function together with the analytical solution of an optimization problem at the element level.
Findings
Two-dimensional numerical examples, regarding minimization of the structure compliance and constraint over the material volume, demonstrate the capacity of the methodology in controlling and equidistributing discretization errors, as well as obtaining a great definition of the void–material interface, thanks to the h-adaptivity, when compared with results obtained by other methods based on microstructure.
Originality/value
This paper presents a new technique to design a mesh made with isotropic triangular finite elements. Furthermore, this technique is applied to continuum topology optimization problems using a new iterative scheme to obtain solutions with controlled discretization errors, measured in terms of the energy norm, and a great resolution of the material boundary. Regarding the computational cost in terms of degrees of freedom, the present scheme provides approximations with considerable less error if compared to the optimization process on fixed meshes.
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Patrick Lo, Robert Sutherland, Wei-En Hsu and Russ Girsberger
The purpose of this paper is to answer the question: What happens to the outcomes of pay dispersion when the employees own stock in their own company?
Abstract
Purpose
The purpose of this paper is to answer the question: What happens to the outcomes of pay dispersion when the employees own stock in their own company?
Design/methodology/approach
The data set consisted of over 20,000 employee surveys. Pay dispersion was measured with the Gini coefficient. The outcome variables were attitudes and behaviors with numerous controls. The moderation effect of employee ownership was investigated at the individual and group level using multilevel regression analysis.
Findings
Most hypothesized outcomes did not yield statistically significant results. The results that were statistically significant had two patterns: first, higher pay dispersion was consistently associated with improved attitudes and behaviors; and second, employee ownership moderated the outcomes of pay dispersion for certain outcomes and job types (e.g. perceptions of company fairness among administrative support personnel, or absenteeism and production personnel). There was no evidence to support a link between pay dispersion and attitudes across job types (vertical), only within job types (horizontal).
Research limitations/implications
All the data were self-reported in surveys. Attitudes were measured with single items rather than validated scales. The data were cross-sectional, so no causality can be inferred.
Practical implications
While both higher pay dispersion and employee ownership can motivate employees, the interaction between them can be negative, especially in a cooperative environment. Consideration should be given to this when designing compensation packages.
Social implications
There was a surprisingly strong link between higher pay differentials and improved attitudes, suggesting that the opportunity for higher pay is more influential than any feelings of inequity.
Originality/value
The effect of employee ownership on the outcomes of pay dispersion has never been investigated. This should be valuable given how widely higher pay is used to attract, retain and motivate employees (leading to pay dispersion) as well as how increasingly popular employee ownership is becoming.
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Gregory A. Aarons, Kate L. Conover, Mark G. Ehrhart, Elisa M. Torres and Kendal Reeder
Clinician turnover in mental health settings impacts service quality, including availability and delivery of evidence-based practices. Leadership is associated with organizational…
Abstract
Purpose
Clinician turnover in mental health settings impacts service quality, including availability and delivery of evidence-based practices. Leadership is associated with organizational climate, team functioning and clinician turnover intentions (TI). This study examines leader–member exchange (LMX), reflecting the relationship between a supervisor and each supervisee, using mean team LMX, dispersion of individual clinician ratings compared to team members (i.e. relative LMX) and team level variability (i.e. LMX differentiation), in relation to organizational climate and clinician TI.
Design/methodology/approach
Survey data were collected from 363 clinicians, nested in children's mental health agency workgroups, providing county-contracted outpatient services to youth and families. A moderated mediation path analysis examined cross-level associations of leader–member exchange with organizational climate and turnover intentions.
Findings
Lower relative LMX and greater LMX differentiation were associated with higher clinician TI. Higher team-level demoralizing climate also predicted higher TI. These findings indicate that poorer LMX and more variability in LMX at the team level are related to clinician TI.
Originality/value
This study describes both team- and clinician-level factors on clinician TI. Few studies have examined LMX in mental health, and fewer still have examined relative LMX and LMX differentiation associations with organizational climate and TI. These findings highlight the importance of leader–follower relationships and organizational climate and their associations with clinician TIs. Mental health service systems and organizations can address these issues through fostering more positive supervisor–supervisee relationships.
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Matteo La Torre, Diego Valentinetti, John Dumay and Michele Antonio Rea
The purpose of this paper is to examine the potential for eXtensible Business Reporting Language (XBRL) to go beyond static reporting. A taxonomy structure of information is…
Abstract
Purpose
The purpose of this paper is to examine the potential for eXtensible Business Reporting Language (XBRL) to go beyond static reporting. A taxonomy structure of information is developed for providing a knowledge base and insights for an XBRL taxonomy for integrated reporting (IR).
Design/methodology/approach
Design Science (DS) research, as a pragmatic exploratory research approach, is embraced to create a new “artefact” and thematic content analysis is used to analyse IR in practice.
Findings
Using XBRL for IR allows a shift from static and periodic reporting to more relevant and dynamic corporate disclosure for stakeholders, who can navigate and retrieve customised disclosure information according to their interest by exploiting the multidimensionality of IR and overcome some of its criticisms. The bi-dimensional taxonomy structure the authors’ present allows users to navigate disclosure from two different perspectives (content elements (CE) and capitals), display specific themes of interest, and drill down to more detailed information. Because of its evidence-based nature and levels of disaggregation, it provides flexibility to preparers and users of information. Additionally, the findings demonstrate the need to codify sector-specific information for the CE, so that to direct the efforts toward the development of sector-specific taxonomy extensions in developing an XBRL taxonomy for IR.
Research limitations/implications
The limitations of DS research are, first, the artefact design and, second, its effects in practice. The first limitation stems from the social actors’ perspective taken into account to develop the taxonomy structure, which derives from the analysis of the reporting practices rather than a pluralistic approach and dialogic engagement. The second limitation relates to the XBRL taxonomy development process because, since the study is limited to the “design” phase being codification and structuring the knowledge base for an XBRL taxonomy, there is a need to develop a taxonomy in XBRL and then apply it in practice to empirically demonstrate the potential and benefits of XBRL in the IR context.
Practical implications
The taxonomy structure is targeted at entities interested in designing an XBRL taxonomy for IR. This is a call for academics and practitioners to explore the potential of technology to improve corporate disclosure and open up new projections for resurging themes on intellectual capital (IC) reporting with prospects for IC “fourth-stage” research focused on IC disclosure.
Originality/value
This is an interdisciplinary research employing the DS approach, which is rooted in information systems research. It is the first academic study providing pragmatic results for using XBRL in the context of IC and IR.
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Sehrish Huma, Waqar Ahmed and Arsalan Najmi
In the era of market turbulence, sourcing specialists consistently face challenges to keep the availability of the material efficiently and effectively without any disruption…
Abstract
Purpose
In the era of market turbulence, sourcing specialists consistently face challenges to keep the availability of the material efficiently and effectively without any disruption. Sourcing strategies and planning have a huge impact on procurement performance. The purpose of this paper is to examine the relationships among different sourcing strategies and supply risk management and performance and additionally, the role of procurement practices in different strategic settings.
Design/methodology/approach
This is empirical research that collected data gathered from 223 procurement specialists working in various manufacturing firms through a structured questionnaire. Valid data is then analyzed through the structure equation modeling technique for hypotheses testing.
Findings
The findings of this study reveal that supplier development is a partial complementary mediator between multiple supplier strategy and supply-side risk management. While in a volatile business environment, strategic supplier strategy has a significant negative impact on supply-side risk management, and in this case supplier development acts as a competing partial mediator between the two. Contract management has resulted in an important mechanism to be deployed in a strategic sourcing strategy. It is also shown that supplier risk management is also associated with improved supply management performance.
Practical implications
This paper establishes an explanation of theoretical and practical understanding of sourcing strategies and empirically shows that supplier development is the appropriate mechanism to deal with supply-side risk management, which in turn positively impacts on supplier management performance.
Originality/value
This study contributes to supply chain risk management literature, especially in the context of strategic risk management and explains how a strategic decision can impact supply risk management. This provides a piece of empirical evidence regarding the use of well-established procurement practices to improve supply performance.
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Most years, several AIB members are elected as AIB Fellows on account of their excellent international business scholarship, and/or past service as AIB President or Executive…
Abstract
Most years, several AIB members are elected as AIB Fellows on account of their excellent international business scholarship, and/or past service as AIB President or Executive Secretary. The Fellows are in charge of electing Eminent Scholars as well as the International Executive and International Educator (formerly, Dean) of the Year, who often provide the focus for Plenary Sessions at AIB Conferences. Their history since 1975 covers over half of the span of the AIB and reflects many issues that dominated that period in terms of research themes, progresses and problems, the internationalization of business education and the role of international business in society and around the globe. Like other organizations, the Fellows Group had their ups and downs, successes and failures – and some fun too!