Computer-Aided Process Structuring Via Mixed Integer Programming

Systems development managers today are working with increasingly complex systems, revealing a need for computer-aided techniques in software system definition, design, and construction. The ultimate task of the software engineer is the development of tools and procedures which reduce the effort involved in production of effective software. To be effective, software must possess characteristics of correctness, reliability, efficiency, documentation, and flexibility. This paper develops a measure for software effectiveness and a computer aid for determining process structure in program module specification. The proposed method uses various criteria and a mixed integer program to decompose a system graph into program modules.     

Exploring the Organisational Collage of Memetic Paradigms for (a) Change — A Research Note

Exploring organisations is the prerequisite for any intentional attempt to strategic change. Yet, what is it that we observe when we observe organisations? The argument chooses a narrative approach to exploring organisations. With Niklas Luhmann we look at the operations of organising which makes the organisation an organisation. The paper suggests the organisational collage (I.) of stories as a starting point of the exploration. The specific focus is on meaning-creation and sense-making as the genuine act of organisational self-observation. The disciplinary matrix (II.) reflects on how stories and narratives crystallise and rule the organisation in a paradigmatic way. Along Thomas Kuhn's understanding of paradigms (III.) management is referenced as an activity of a community of practice based on a disciplinary matrix of models, methods and instruments. Giorgio Agamben's conceptualisation of paradigms as reference giving examples allows the opening up of the implicit side of organisational culture. Memetics (V.) approaching reference giving examples as memes and culture as a meme-complex enable the observation of dynamics and cultural evolution over time. Concluding we come to understand the organisational implications (V.) of the conservative nature of organisational development and the systemic sensitivity that allows for management, learning and change. And as always, advances in research come at the price of new questions.     

Testing of mean interval for interval-valued data

Abstract

A new parametric hypothesis test of mean interval for interval-valued data set, which can deal with massive information contained in nowadays massive data “Big data” sets, is proposed. An approach using an orthogonal transformation is introduced to obtain an equivalent hypothesis test of mean interval in terms of the mid-point and mid-range of the interval-valued variable. The new test is very efficient in small interval-valued sample scenarios. Some simulation studies are conducted for the investigation of the sample size and the power of test. The performance of the proposed test is illustrated with two real-life examples.     

A new preventive intervention for children of substance‐abusing parents: Results of a randomized controlled trial

Children of substance‐abusing parents (COS) are at risk for developing psychosocial problems. We evaluated the effectiveness of the manualized, 9‐session psycho‐educational preventive intervention “TRAMPOLINE” (PE) for 8–12‐year‐old COS compared with a non‐educational “fun and play” group (NE) of equal length delivered by social workers in 27 German counselling centres. A randomized controlled trial was conducted to compare PE (n = 130) and NE (n = 88) outcomes at baseline, post intervention, and 6‐month follow‐up. Primary outcomes were related to stress and coping; secondary were also examined. Analyses were conducted using baseline‐adjusted repeated measures linear mixed models. Five outcomes revealed improvements both in PE and NE, four of which were more pronounced in PE, and one more pronounced in NE. Small but significant group differences in favour of PE were found in “social isolation” and “addiction‐related knowledge.” Children from both groups reported reduced mental distress, reduced avoidance in coping with family stress, improved self‐perceived autonomy, and a better parent–child relationship. No changes were observed in self‐efficacy, physical stress symptoms, and in other health‐related quality of life aspects. TRAMPOLINE can instill positive changes in COS by reducing mental distress and social isolation.     

Comparative Human Health Impact Assessment of Engineered Nanomaterials in the Framework of Life Cycle Assessment

For safe innovation, knowledge on potential human health impacts is essential. Ideally, these impacts are considered within a larger life‐cycle‐based context to support sustainable development of new applications and products. A methodological framework that accounts for human health impacts caused by inhalation of engineered nanomaterials (ENMs) in an indoor air environment has been previously developed. The objectives of this study are as follows: (i) evaluate the feasibility of applying the CF framework for NP exposure in the workplace based on currently available data; and (ii) supplement any resulting knowledge gaps with methods and data from the li fe c ycle a pproach and human r isk a ssessment (LICARA) project to develop a modified case‐specific version of the framework that will enable near‐term inclusion of NP human health impacts in life cycle assessment (LCA) using a case study involving nanoscale titanium dioxide (nanoTiO₂). The intent is to enhance typical LCA with elements of regulatory risk assessment, including its more detailed measure of uncertainty. The proof‐of‐principle demonstration of the framework highlighted the lack of available data for both the workplace emissions and human health effects of ENMs that is needed to calculate generalizable characterization factors using common human health impact assessment practices in LCA. The alternative approach of using intake fractions derived from workplace air concentration measurements and effect factors based on best‐available toxicity data supported the current case‐by‐case approach for assessing the human health life cycle impacts of ENMs. Ultimately, the proposed framework and calculations demonstrate the potential utility of integrating elements of risk assessment with LCA for ENMs once the data are available.     

PARLIAMENT SHAPES AND SIZES

This paper proposes a model of Parliamentary institutions in which a society makes three decisions behind the veil of ignorance: whether a Parliament should comprise one or two chambers, what the relative bargaining power of each chamber should be if the Parliament is bicameral, and how many legislators should sit in each chamber. We document empirical regularities across countries that are consistent with the predictions of our model. (JEL D71, D72)     

Quo vadis ... Orientierungshilfen durch Coaching und Karriereberatung — Eine Einzelfallstudie

Quo vadis — Coaching and career counseling as guidance. A case study The individual case study presents coaching and career counseling as effective and efficient strategies for personnel development, particularly as it regards its ?exclusive“ potential: Contents, methods and counseling process can be adapted to the executive’s concern, person and background, adjustable in time and with precision. Public administrations and private enterprises, both in ?profit“ and ?non-profit“ areas, will therefore increasingly (have to) make use of this professional form of management counseling, since successful personnel management has established itself as a decisive factor for business success a long time ago.     

A Note on SERVQUAL Reliability and Validity in Information System Service Quality Measurement

Today's information system function includes a large service component. Recent research has examined the SERVQUAL instrument as a possible measure to assist managers and researchers in evaluating service quality. To further examine the appropriateness of the SERVQUAL measure, a large industry sample serves to verify the anticipated structure of the instrument. In addition, a high correlation with a common measure of user satisfaction indicates that the SERVQUAL metric may indeed represent accurate views of user perception. As such, the SERVQUAL instrument can serve as a useful indicator for information system managers attempting to identify areas of needed service improvement and to researchers seeking a success measure of information system services.     

Mein(schöner)Prof.de

Evaluations of academic teaching have become an instrument for the quality management in universities of constantly growing importance. This process is unproblematic as long as the quality of teaching is rated validly by the evaluations of students. The validity of the rating, however, becomes questionable as an influence of the teaching staffs’ physical attractiveness on the evaluation of teaching has been proved. This effect would only be compatible with an assumed valid rating of the teaching performance if attractive teachers would in fact show a better performance in academic teaching and are not just better rated for their attractiveness. We analyzed data from the German online platform MeinProf.de for the evaluation of academic teachers. The results show that attractive teachers very probably do not perform better. The attractiveness of female teachers does not have the expected influence on the evaluation of their teaching.