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1 – 10 of 12
Article
Publication date: 30 October 2018

Daniel Kaltenthaler, Johannes-Y. Lohrer, Florian Richter and Peer Kröger

Interdisciplinary linkage of information is an emerging topic to create knowledge by collaboration of experts in diverse domains. New insights can be found by using the combined…

Abstract

Purpose

Interdisciplinary linkage of information is an emerging topic to create knowledge by collaboration of experts in diverse domains. New insights can be found by using the combined techniques and information when people have the chance to discuss and communicate on a common basis.

Design/methodology/approach

This paper describes RMS Cloud, an information management system which allows distributed data sources to be searched using dynamic joins of results from heterogeneous data formats. It is based on the well-known Mediator architecture, but reverses the connection of the data sources to grant data owners full control over the data.

Findings

Data owners and learners are enabled to retrieve information and to cross-connect domain-extrinsic knowledge and enhances collaborative learning with a search interface that is intuitive and easy to operate.

Originality/value

This novel architecture is able to connect to differently shaped data sources from interdisciplinary domains into one common retrieval interface.

Details

Journal of Information, Communication and Ethics in Society, vol. 16 no. 4
Type: Research Article
ISSN: 1477-996X

Keywords

Article
Publication date: 12 July 2011

Massimo Guarnieri

The paper seeks to do the following. To provide an expression of the electromagnetic power flow that is alternative to the Poynting's theorem expression, overcomes its postulate…

Abstract

Purpose

The paper seeks to do the following. To provide an expression of the electromagnetic power flow that is alternative to the Poynting's theorem expression, overcomes its postulate feature, and is particularly suitable for electric circuit elements.

Design/methodology/approach

The paper proceeds from fundamental electromagnetic laws and, independently of Poynting's formulation, follows an approach that generalize established double formulations of the electrostatic and magnetostatic energies.

Findings

The paper proposes a compact and straightforward expression of the electromagnetic power flow based on the fundamental electromagnetic field sources, i.e. charge and current densities.

Practical implications

The achieved expression confirms Poynting's expression in the case of electric elements, overcoming its arbitrariness, generalizes previous partial results by other authors, deduced via the Poynting's power balance.

Originality/value

Is promising in the computation of power flow electromagnetic devices connected in electrical circuits, i.e. for coupled problems where the analysis of electromagnetic system interfaced to electric circuits is required. Due to its simple structure and straightforward deduction it has educational value to demonstrate the expressions of the electric power in circuit elements.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 30 no. 4
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 3 August 2021

Laura Rosenkranz, Silvia Richter, Georg Jacobs, Adrian Mikitisin, Joachim Mayer, Andreas Stratmann and Florian König

Rolling bearing operation under mixed and boundary lubrication conditions may lead to heavy adhesive or abrasive wear, which may lead to wear-induced rolling bearing failure. The…

Abstract

Purpose

Rolling bearing operation under mixed and boundary lubrication conditions may lead to heavy adhesive or abrasive wear, which may lead to wear-induced rolling bearing failure. The purpose of this paper is to investigate the wear protection capabilities of different grease compositions at varying temperatures. It is considered that the temperature influences the lubrication conditions, the behaviour of grease components, namely, bleed oil and thickener, as well as the tribofilm formation due to tribo-chemical interactions between additives and surfaces.

Design/methodology/approach

In this study, four different greases were produced on the basis of a mineral base oil by varying the thickener and the addition of ZDDP. Various grease-lubricated rolling bearing experiments were conducted in a wide temperature range from 0°C to 120°C. Subsequently, the wear pattern, tribofilm formation and grease structures were analysed. Thereby, the influence of the different grease thickeners and the performance of ZDDP as a common antiwear and extreme pressure additive was evaluated.

Findings

The results show a strong temperature-dependency and allow a classification of temperature ranges concerning wear protection. At low temperatures, all greases provide a very good wear protection without the evidence of additive-based tribofilm formation. In the experiments at elevated temperatures, ZDDP tribofilms were formed. The formation depends on the thickener type: in comparison to lithium thickener, polyurea thickener favours more protective tribofilms at the same temperature. The experimental results show that medium temperatures in the range of 40°C–60°C are critical concerning wear due to the insufficient tribolayer formation and limited load carrying capacity of the grease.

Originality/value

Temperature is a key operating parameter for grease lubrication in roller bearings. The experimental work enables consideration of different impact pathways of temperature by combining roller bearing tests and microanalysis.

Details

Industrial Lubrication and Tribology, vol. 73 no. 6
Type: Research Article
ISSN: 0036-8792

Keywords

Content available
Article
Publication date: 9 September 2014

Markus Ketterl and Christopher Brooks and Florian Schimanke

164

Abstract

Details

Interactive Technology and Smart Education, vol. 11 no. 3
Type: Research Article
ISSN: 1741-5659

Article
Publication date: 2 February 2018

Florian Andreas Johannsen

The purpose of this paper is to identify process-related value propositions in terms of process execution when using enterprise social media (ESM) for external communication…

1418

Abstract

Purpose

The purpose of this paper is to identify process-related value propositions in terms of process execution when using enterprise social media (ESM) for external communication purposes. Additionally, capabilities of ESM technologies to realize the value propositions are identified.

Design/methodology/approach

A literature review of case studies, describing ESM usage for external communication purposes, is performed. Further, face-to-face interviews with employees from companies are conducted to complement the findings retrieved from the literature.

Findings

It is shown that manifold process-related value propositions for different business processes can be realized by ESM application for external communication purposes. However, certain value propositions and the corresponding capabilities of ESM technologies are particularly emphasized.

Research limitations/implications

This research is different from existing studies about ESM usage because an explicit perspective on business processes is taken. Therefore, the findings contribute to the existing body of knowledge of beneficial ESM usage. Analyzing the literature and interview transcripts underlies a certain amount of subjectivity, a circumstance addressed by engaging two researchers in the coding procedure.

Practical implications

Practitioners discussing potentials of ESM application are provided with concrete hints as to which business processes will most likely profit from the use of social technologies for the external communication with customers.

Originality/value

This paper contributes to a better understanding of the beneficial impact of social technologies on business processes and thus prepares the ground for a better alignment of ESM and processes. An extensive overview of value propositions for a company’s business processes has so far not been compiled in this form.

Details

Business Process Management Journal, vol. 24 no. 1
Type: Research Article
ISSN: 1463-7154

Keywords

Article
Publication date: 1 January 2008

Guoping Huang, Yalin Zhang, Shakeh Momartin, Xuanyin Huang and Lan Zhao

The purpose of the study was to assess the relationship between child sexual abuse (CSA) and posttraumatic stress disorder (PTSD) in female inmates in China. A total of 471…

345

Abstract

The purpose of the study was to assess the relationship between child sexual abuse (CSA) and posttraumatic stress disorder (PTSD) in female inmates in China. A total of 471 participants were assessed for CSA, personality traits, coping strategies, and frequency of lifetime PTSD. Results demonstrated that CSA and negative coping were predictive factors for lifetime PTSD among female inmates after personality traits were controlled. The findings suggest that CSA is one potential factor contributing to lifetime PTSD among female inmates. The importance of screening for CSA among female inmates was highly emphasized. Early intervention and prevention programmes based on coping skills may be useful to forestall the development of chronic PTSD in female inmates.

Details

International Journal of Prisoner Health, vol. 4 no. 1
Type: Research Article
ISSN: 1744-9200

Keywords

Content available
Article
Publication date: 17 October 2016

Jörg Henseler

1425

Abstract

Details

Industrial Management & Data Systems, vol. 116 no. 9
Type: Research Article
ISSN: 0263-5577

Content available
Article
Publication date: 14 January 2019

S. Mostafa Rasoolimanesh and Faizan Ali

2500

Abstract

Details

Journal of Hospitality and Tourism Technology, vol. 9 no. 3
Type: Research Article
ISSN: 1757-9880

Article
Publication date: 1 February 1986

The Deutscher Verband für Schweisstechnik (German Welding Society) made a very judicious and much appreciated choice of venue for its Third International Conference on 18–20…

Abstract

The Deutscher Verband für Schweisstechnik (German Welding Society) made a very judicious and much appreciated choice of venue for its Third International Conference on 18–20 February, 1986, on Interconnection Technology in Electronics. Fellbach, less than 10 km from the Schlossplatz in Stuttgart, and whose past profile was shaped almost entirely by winegrowing, has become since the opening in 1976 of the Schwabenlandhalle a town renowned equally for its significance as a conference centre. With the vine‐crowned Kappelberg hill dominating the town and commanding views to the Neckar Valley, Swabian hospitality and friendliness at its best, and a most impressive congress hall with excellent facilities in picturesque snow‐clad surroundings, the ingredients for providing a conference venue conducive to an optimum interchange of technological information were certainly present.

Details

Microelectronics International, vol. 3 no. 2
Type: Research Article
ISSN: 1356-5362

Article
Publication date: 20 January 2023

Jing Zhan and Yue Zhao

The purpose of this study is to explore a balanced understanding of the relationship between perceived occupational stigma and social workers’ proactive behaviors in China…

Abstract

Purpose

The purpose of this study is to explore a balanced understanding of the relationship between perceived occupational stigma and social workers’ proactive behaviors in China. Drawing on cognitive appraisal theory, this study explored the mediating role of threat and challenge appraisals, as well as the moderating role of trait resilience.

Design/methodology/approach

Data were collected using a time-lagged research design. The hypotheses were examined using a sample of 338 social workers in China.

Findings

Perceived occupational stigma is appraised as both a challenge and a threat simultaneously. Challenge appraisal positively mediated perceived occupational stigma and proactive behavior, whereas threat appraisal negatively mediated this relationship. Trait resilience moderated the effect of threat appraisal, suggesting that perceived occupational stigma was appraised as a threat when trait resilience was lower (rather than higher), which then reduced social workers’ proactive behaviors.

Originality/value

This study enriches the literature on perceived occupational stigma by identifying the relationship and mechanism of perceived occupational stigma-proactive behaviors and a boundary condition from the theoretical perspective of cognitive appraisals. It demonstrates both the positive and negative aspects of perceived occupational stigma as appraised by social workers in relation to an important workplace outcome of proactive behaviors. In addition, it offers a fresh approach by exploring perceived occupational stigma from the perspective of social workers.

Details

Cross Cultural & Strategic Management, vol. 30 no. 2
Type: Research Article
ISSN: 2059-5794

Keywords

1 – 10 of 12