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Article
Publication date: 1 August 2006

Martin Gutbrod, Christian Werner and Stefan Fischer

One of today’s major problems in the field of e‐learning is that the creation of high‐quality content is still rather time consuming and expensive. In the past, many…

Abstract

One of today’s major problems in the field of e‐learning is that the creation of high‐quality content is still rather time consuming and expensive. In the past, many efforts have been made to produce educational content on the fly, but the results were mainly static blocks of recorded lecture lacking sophisticated navigation facilities. Facing this challenge the authors developed the concept of hyper‐presentations. During the live presentation content‐ and time‐based metadata is captured and stored in a lightweight and player‐independent format. With this metadata powerful navigation facilities like real time navigation and full text search in audio or video data can be generated automatically. This improves flexibility and interoperability of technical solutions, which are both key factors in the emerging rapid e‐learning market.

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

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Article
Publication date: 23 November 2010

Nils Hoeller, Christoph Reinke, Jana Neumann, Sven Groppe, Christian Werner and Volker Linnemann

In the last decade, XML has become the de facto standard for data exchange in the world wide web (WWW). The positive benefits of data exchangeability to support system and…

Abstract

Purpose

In the last decade, XML has become the de facto standard for data exchange in the world wide web (WWW). The positive benefits of data exchangeability to support system and software heterogeneity on application level and easy WWW integration make XML an ideal data format for many other application and network scenarios like wireless sensor networks (WSNs). Moreover, the usage of XML encourages using standardized techniques like SOAP to adapt the service‐oriented paradigm to sensor network engineering. Nevertheless, integrating XML usage in WSN data management is limited by the low hardware resources that require efficient XML data management strategies suitable to bridge the general resource gap. The purpose of this paper is to present two separate strategies on integrating XML data management in WSNs.

Design/methodology/approach

The paper presents two separate strategies on integrating XML data management in WSNs that have been implemented and are running on today's sensor node platforms. The paper shows how XML data can be processed and how XPath queries can be evaluated dynamically. In an extended evaluation, the performance of both strategies concerning the memory and energy efficiency are compared and both solutions are shown to have application domains fully applicable on today's sensor node products.

Findings

This work shows that dynamic XML data management and query evaluation is possible on sensor nodes with strict limitations in terms of memory, processing power and energy supply.

Originality/value

The paper presents an optimized stream‐based XML compression technique and shows how XML queries can be evaluated on compressed XML bit streams using generic pushdown automata. To the best of the authors' knowledge, this is the first complete approach on integrating dynamic XML data management into WSNs.

Details

International Journal of Web Information Systems, vol. 6 no. 4
Type: Research Article
ISSN: 1744-0084

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Article
Publication date: 26 January 2010

Marcus Maiwald, Christian Werner, Volker Zöllmer and Matthias Busse

The purpose of this paper is to highlight INKtelligent printed sensor structures using maskless depositition technologies.

Abstract

Purpose

The purpose of this paper is to highlight INKtelligent printed sensor structures using maskless depositition technologies.

Design/methodology/approach

This paper begins with a general introduction to INKtelligent printing®. Starting with layout and ink development, the fabrication of printed sensors is described in detail.

Findings

Printed strain gauges, thermopiles and gas sensitive films are successfully fabricated with maskless deposition technologies, offering advantages for continuous non‐destructive measurement compared to conventional sensors.

Originality/value

This paper shows a new approach for customized sensor structures. The application of a resource efficient and flexible printing technique for sensor fabrication is demonstrated.

Details

Sensor Review, vol. 30 no. 1
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 1 July 1997

Hans‐Christian Pfohl and Werner Zöllner

Argues that the organization for logistics often favours an aggregation of all tasks into one department. This decision presupposes an extensive analysis of important…

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5647

Abstract

Argues that the organization for logistics often favours an aggregation of all tasks into one department. This decision presupposes an extensive analysis of important contingency factors, like product line, environmental relations, technology and organizational size. However, such contingency factors have a limited influence, and are modified by the strategy of the organization. Defines selected contingency factors, examines the organization’s overall strategy and shows how these two factors can be combined in the light of the specific requirements of the firm’s logistical task.

Details

International Journal of Physical Distribution & Logistics Management, vol. 27 no. 5/6
Type: Research Article
ISSN: 0960-0035

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Content available
Article
Publication date: 23 November 2010

Ismail Khalil

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368

Abstract

Details

International Journal of Web Information Systems, vol. 6 no. 4
Type: Research Article
ISSN: 1744-0084

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Article
Publication date: 1 March 1985

Tomas Riha

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and…

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1322

Abstract

Nobody concerned with political economy can neglect the history of economic doctrines. Structural changes in the economy and society influence economic thinking and, conversely, innovative thought structures and attitudes have almost always forced economic institutions and modes of behaviour to adjust. We learn from the history of economic doctrines how a particular theory emerged and whether, and in which environment, it could take root. We can see how a school evolves out of a common methodological perception and similar techniques of analysis, and how it has to establish itself. The interaction between unresolved problems on the one hand, and the search for better solutions or explanations on the other, leads to a change in paradigma and to the formation of new lines of reasoning. As long as the real world is subject to progress and change scientific search for explanation must out of necessity continue.

Details

International Journal of Social Economics, vol. 12 no. 3/4/5
Type: Research Article
ISSN: 0306-8293

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Article
Publication date: 17 July 2020

Susanne Schlepphorst, Elizabeth C. Koetter, Arndt Werner, Christian Soost and Petra Moog

Drawing on human capital (HC) and social capital (SC) as well as the Jack-of-all-trades theory, this paper aims to clarify the relationship between international…

Abstract

Purpose

Drawing on human capital (HC) and social capital (SC) as well as the Jack-of-all-trades theory, this paper aims to clarify the relationship between international assignments (IAs) of employees and their entrepreneurial intentions. The study proposes that such IAs provide specific environmental features which may enable employees to build up diverse skills and network relations conducive to entrepreneuship.

Design/methodology/approach

The authors collected data using an online survey, targeting professionals and managers in Germany and Switzerland. They used 223 complete responses. Before data collection, they ensured the suitability of their questionnaire by employing well-tested scales and consulted independent experts in survey design and methodology. They tested their hypotheses by applying multiple mediation modeling.

Findings

As hypothesized, the authors find empirical evidence that diverse skills and network relationships as well as poor career prospects, positively mediate the relationship between IAs and entrepreneurial intentions of employees.

Research limitations/implications

We applied simple random and the snowball sampling method. Our approach involved the use of headhunters, international employers and relocation companies as multipliers.

Practical implications

Our results have practical implications for employees and employers. Employees on international assignments can proactively pursue opportunities in order to utilize the acquired experiences and resources for taking up entrepreneurial activities. Employers can try to retain these employees to facilitate (international) corporate entrepreneurship.

Originality/value

To the best of our knowledge, this is the first empirical study to highlight the entrepreneurial ambitions of international assignees. It thus provides initial insights into this topic.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 26 no. 6
Type: Research Article
ISSN: 1355-2554

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Article
Publication date: 4 September 2017

Werner Renhart, Oszkár Bíró, Christian Magele, Kurt Preis and Alexander Rabel

The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the…

Abstract

Purpose

The purpose of this paper is the modelling and estimation of inrush currents while energising power devices under no load conditions. An analytical representation of the nonlinear B-H curve serves for considering the hysteresis behaviour in the numerical model.

Design/methodology/approach

The model is implemented into a standard finite element formulation to compute transient problems.

Findings

Inrush currents behave like faults in power distribution facilities. Its prior estimation helps to distinguish between operating conditions and faults.

Research limitations/implications

The magnetic cores may become extremely magnetised. At such high material saturations, the material characteristics are not measurable accurately. Hence, the results depend on the extrapolation of the B-H curves.

Originality/value

The use of first-order reversal curves within the major hysteresis loops helps in a convenient way to estimate peak and shape of the inrush currents.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 36 no. 5
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 1 February 2005

Birgit Hofreiter, Christian Huemer and Werner Winiwarter

Prior to conducting business via the Web, business partners agree on the business processes they are able to support. In ebXML, the choreography of these business…

Abstract

Prior to conducting business via the Web, business partners agree on the business processes they are able to support. In ebXML, the choreography of these business processes is described as an instance of the so‐called business process specification schema (BPSS). For execution purposes the BPSS must be defined in the exact business context of the partnership. Reference models for B2B processes developed by standard organizations usually span over multiple business contexts to avoid a multitude of similar processes. In this paper we present how business collaboration models following the UN/CEFACT Modeling Methodology (UMM) are expressed in ebXML BPSS. To allow a mapping from multi‐context business collaboration models to a context‐specific choreography in ebXML BPSS we extend UMM to capture constraints for different business contexts

Details

International Journal of Web Information Systems, vol. 1 no. 1
Type: Research Article
ISSN: 1744-0084

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Article
Publication date: 31 January 2018

Michael Arias, Rodrigo Saavedra, Maira R. Marques, Jorge Munoz-Gama and Marcos Sepúlveda

Human resource allocation is considered a relevant problem in business process management (BPM). The successful allocation of available resources for the execution of…

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2282

Abstract

Purpose

Human resource allocation is considered a relevant problem in business process management (BPM). The successful allocation of available resources for the execution of process activities can impact on process performance, reduce costs and obtain a better productivity of the resources. In particular, process mining is an emerging discipline that allows improvement of the resource allocation based on the analysis of historical data. The purpose of this paper is to provide a broad review of primary studies published in the research area of human resource allocation in BPM and process mining.

Design/methodology/approach

A systematic mapping study (SMS) was conducted in order to classify the proposed approaches to allocate human resources. A total of 2,370 studies published between January 2005 and July 2016 were identified. Through a selection protocol, a group of 95 studies were selected.

Findings

Human resource allocation is an emerging research area that has been evolving over time, generating new proposals that are increasingly applied to real case studies. The majority of proposed approaches relate to the period 2011-2016. Journals and conference proceedings are the most common venues. Validation research and evaluation research are the most common research types. There are two main evaluation methods: simulation and case studies.

Originality/value

This study aims to provide an initial assessment of the state of the art in the research area of human resource allocation in BPM and process mining. To the best of the authors’ knowledge, this is the first research that has been conducted to date that generates a SMS in this research area.

Details

Management Decision, vol. 56 no. 2
Type: Research Article
ISSN: 0025-1747

Keywords

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