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Article
Publication date: 5 January 2010

Thomas Weidinger

The purpose of this paper is to present an analysis of common mode oscillations of several kilohertz in electrical drive systems. The analysed oscillations occur especially in…

290

Abstract

Purpose

The purpose of this paper is to present an analysis of common mode oscillations of several kilohertz in electrical drive systems. The analysed oscillations occur especially in electrical drive systems with active front end (AFE), common DC link and long motor cables and are independent of the well‐known reflection phenomenon. Owing to the resulting overvoltages, the motor isolation lifetime may be significantly reduced.

Design/methodology/approach

For the analysis of the described problem, all parts of the common mode system of an electrical drive system are carefully modelled. This leads to an analysis of the frequency behaviour of the common mode system. The excitation mechanisms are also analysed and simulation in the time domain is performed to show the resulting overvoltages. Finally, measurements confirm the findings.

Findings

The investigations identified the reasons for the oscillations: the common mode system behaviour, including the common mode resonant behaviour of some special kinds of motor. Furthermore, the excitation mechanism is found to be dependent on the modulation schemes of the AFE and the inverters. Accordingly, a special remedy concerning the modulation is derived and compared to other known remedies. The results of the simulations show the good efficiency of the proposed remedy.

Originality/value

The presented results describe important basics for the development of electrical drive systems. By taking these issues into consideration, many unpredictable failures can be avoided.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 29 no. 1
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 28 March 2008

Zhonghong Wang

The purpose of the paper is to describe the Long Island University Brooklyn Campus Library's experience with a Smart Space Project. This paper recounts how the library creates new…

3309

Abstract

Purpose

The purpose of the paper is to describe the Long Island University Brooklyn Campus Library's experience with a Smart Space Project. This paper recounts how the library creates new instructional spaces, through the use of smart technologies. This study illustrates challenges facing the library, recounts collaboration with other campus units, and describes support service provided by Library Information Technology. This account contributes to the sharing and discussion of experiences among modern academic libraries regarding needs assessment, space planning, and utilization of technology to support library services.

Design/methodology/approach

The literature review includes space planning, building renovation and construction, and instructional technology. Various aspects of the Smart Space Project are described and analyzed. Studies and experiences from other academic libraries are also discussed.

Findings

Space renovation projects may be complex, requiring a systematic approach encompassing vision, needs assessment, funding, planning, technological considerations, and collaboration with other campus units. Creativity, flexibility, open‐mindedness, and attention to details are keys to the success of renovation projects.

Research limitations/implications

In the areas of library space, student learning behaviour, utilization of technology, and smart technology's impacts on online/distance library instruction, more research needs to be conducted.

Practical implications

This account provides useful information and first‐hand experience for library administrators and faculty planning instructional space projects.

Originality/value

This article provides a snapshot of the efforts of a mid‐sized urban library to address issues of limited space, budgetary constraints, growing collections, and increasing user needs. It provides practical lessons and suggestions for other library administrators and faculty seeking to make building and instructional technology improvements. It also offers valuable information for library information technology units implementing smart instructional projects.

Details

New Library World, vol. 109 no. 3/4
Type: Research Article
ISSN: 0307-4803

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Book part
Publication date: 19 April 2018

Daniel Moscovici and Emma Witt

Field-based education for environmental studies has been a foundational principle for the Environmental Studies program at Stockton University, which began in 1971. Located within…

Abstract

Field-based education for environmental studies has been a foundational principle for the Environmental Studies program at Stockton University, which began in 1971. Located within the 445,000 hectare Pinelands National Reserve, on an 800-hectare campus near Atlantic City, New Jersey, USA, two professors in the program discuss our rationale and experiences teaching students about the environment within the environment. Expounding on the interdisciplinary literature of field-based learning, we present four unique case studies including local and regional experiences, as well as student learning abroad. The first case proposes that learning outdoors might be beneficial for students with learning disabilities. This is exemplified during a one-week field study to the 2.4 million hectare Adirondack Park & Preserve. The second instance reveals the benefits of working with local towns and environs acting as consultants in a multidisciplinary capstone experience. Next, we show how on-campus data collection and hypothesis formulation help students to learn about environmental design and statistical analysis. Finally, an international trip to the Caribbean opens the minds of students through a service learning project. While on campus, in town, across the United States or at an international destination, learning in the field gives students the opportunity to expand their knowledge through field-based active learning strategies.

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Book part
Publication date: 18 July 2022

Fabian Akkerman, Eduardo Lalla-Ruiz, Martijn Mes and Taco Spitters

Cross-docking is a supply chain distribution and logistics strategy for which less-than-truckload shipments are consolidated into full-truckload shipments. Goods are stored up to…

Abstract

Cross-docking is a supply chain distribution and logistics strategy for which less-than-truckload shipments are consolidated into full-truckload shipments. Goods are stored up to a maximum of 24 hours in a cross-docking terminal. In this chapter, we build on the literature review by Ladier and Alpan (2016), who reviewed cross-docking research and conducted interviews with cross-docking managers to find research gaps and provide recommendations for future research. We conduct a systematic literature review, following the framework by Ladier and Alpan (2016), on cross-docking literature from 2015 up to 2020. We focus on papers that consider the intersection of research and industry, e.g., case studies or studies presenting real-world data. We investigate whether the research has changed according to the recommendations of Ladier and Alpan (2016). Additionally, we examine the adoption of Industry 4.0 practices in cross-docking research, e.g., related to features of the physical internet, the Internet of Things and cyber-physical systems in cross-docking methodologies or case studies. We conclude that only small adaptations have been done based on the recommendations of Ladier and Alpan (2016), but we see growing attention for Industry 4.0 concepts in cross-docking, especially for physical internet hubs.

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Article
Publication date: 11 October 2020

Tessa Withorn, Joanna Messer Kimmitt, Carolyn Caffrey, Anthony Andora, Cristina Springfield, Dana Ospina, Maggie Clarke, George Martinez, Amalia Castañeda, Aric Haas and Wendolyn Vermeer

This paper aims to present recently published resources on library instruction and information literacy, providing an introductory overview and a selected annotated bibliography…

8925

Abstract

Purpose

This paper aims to present recently published resources on library instruction and information literacy, providing an introductory overview and a selected annotated bibliography of publications covering various library types, study populations and research contexts.

Design/methodology/approach

This paper introduces and annotates English-language periodical articles, monographs, dissertations, reports and other materials on library instruction and information literacy published in 2019.

Findings

The paper provides a brief description of all 370 sources and highlights sources that contain unique or significant scholarly contributions.

Originality/value

The information may be used by librarians, researchers and anyone interested as a quick and comprehensive reference to literature on library instruction and information literacy.

Details

Reference Services Review, vol. 48 no. 4
Type: Research Article
ISSN: 0090-7324

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Book part
Publication date: 1 April 2011

Jugnu Agrawal, Dannette Allen-Bronaugh and Margo A. Mastropieri

This study compares two methods of data collection for students' social behaviors. One method employed time sampling procedures, while the other method used handheld computerized…

Abstract

This study compares two methods of data collection for students' social behaviors. One method employed time sampling procedures, while the other method used handheld computerized devices and the Multi-Option Observation System for Experimental Studies (MOOSES) system. Both coding systems were used to assess social behaviors of students with emotional disabilities during writing instruction. The middle-school-aged students, all classified as having EBD, were enrolled in classes to improve their written expression. Students were assessed for on-task, off-task, and multitask behaviors. Results revealed some surprising differences. When students were relatively consistent with attendance and on-task behaviors, the methods yielded comparable results; however, when students were more disruptive and demonstrated more inconsistent behaviors, different patterns emerged. Implications and recommendations for future research and practice are discussed.

Details

Assessment and Intervention
Type: Book
ISBN: 978-0-85724-829-9

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Article
Publication date: 7 September 2010

Judi Briden and Ann Marshall

The purpose of this paper is to quantify recent changes in students' use of laptops in one academic library and to consider the potential role of new high‐tech library spaces on…

1293

Abstract

Purpose

The purpose of this paper is to quantify recent changes in students' use of laptops in one academic library and to consider the potential role of new high‐tech library spaces on laptop use.

Design/methodology/approach

Instead of relying on standard library exit and entrance counts, this study was based on brief, structured observations of library spaces, including counts of laptop use. By conducting such observations over regular intervals in both new and pre‐existing library spaces, the authors were able to observe changes in laptop use across both time and type of library space.

Findings

The growth in laptop use dramatically exceeded expectations: 28 percent of students used laptops in existing spaces in 2005, while 62 percent of students used laptops in the same spaces in 2008. While a new, adjoining high‐tech space also had high laptop use, the opening of this new space coincided with growth in both laptop use and overall student presence in the pre‐existing library spaces. In addition, the paper posits a variety of potential causes for these changes, including available technology and hardware, university‐wide policy, and student behavior.

Originality/value

The changing use of laptops in libraries is important for administrative decision making at both the library and institutional level, including decisions about facilities, technology infrastructure and support, and security.

Details

Library Hi Tech, vol. 28 no. 3
Type: Research Article
ISSN: 0737-8831

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Article
Publication date: 2 January 2021

Rebekka Dieterich-Hartwell, Craig Haen, Girija Kaimal, Sabine Koch, Augusta Villanueva and Sherry Goodill

The purpose of this study is to investigate what resources recent refugees to the USA tap into and how collaborative expressive movements were experienced with regard to coping…

186

Abstract

Purpose

The purpose of this study is to investigate what resources recent refugees to the USA tap into and how collaborative expressive movements were experienced with regard to coping and resourcing, and to derive a theoretical model that would inform the use of dance/movement therapy and other holistic treatment modalities with refugees.

Design/methodology/approach

A total of 13 refugees overall participated in parts of this study. Ten of these refugees completed movement sessions and semi-structured in-person interviews. Constructivist grounded theory methods and descriptive statistics were used to analyze the data.

Findings

The findings suggest that refugees draw on a number of resources. The collaborative movement experiences seemed to have both a settling and mobilizing effect with the most important phenomenon of connection to the self or to another person. A grounded theory model, developed based on the findings, shows a dynamic interaction between the encountered categories.

Research limitations/implications

The findings are preliminary and not transferrable because of limited size and potential researcher bias.

Practical implications

The findings contribute to an understanding of the resettlement and acculturation phase of refugees with potential implications and suggestions for current clinical practices and health services.

Originality/value

This study was original in its focus on understanding the role and the potential of body and expressive movement among refugees who have experienced trauma. Adherence to transformative paradigm principles invited participants to become co-researchers.

Details

International Journal of Migration, Health and Social Care, vol. 17 no. 1
Type: Research Article
ISSN: 1747-9894

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Article
Publication date: 26 April 2024

Wenjing Guo, Yuan Jiang, Wei Zhang and Haizhen Wang

Research on the effects of feedback frequency has reported mixed findings. To tackle this problem, the current study focuses on specific feedback signs (i.e. negative feedback)…

419

Abstract

Purpose

Research on the effects of feedback frequency has reported mixed findings. To tackle this problem, the current study focuses on specific feedback signs (i.e. negative feedback). By integrating the face management theory and attribution theory, this study examined the mediating effect of trust in supervisors and the moderating effect of employee-attributed performance promotion motives for negative feedback.

Design/methodology/approach

A field study with 176 participants and two supplemental experiments with 143 and 100 participants, respectively, were conducted to test the theoretical model.

Findings

Results revealed that the frequency of supervisory negative feedback negatively influenced employees’ trust in supervisors, which in turn influenced employees’ perceptions of feedback utility and learning performance. These indirect effects can be alleviated when employees have high degrees of performance promotion attribution for supervisor motives.

Originality/value

This research extends feedback research by integrating feedback frequency with a specific sign of feedback and revealing a moderated mediation effect of the negative feedback frequency.

Details

Leadership & Organization Development Journal, vol. 45 no. 5
Type: Research Article
ISSN: 0143-7739

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Article
Publication date: 7 May 2024

Amy Lakeman and Michael Jindra

In this article, we examine the historical and cultural foundations of Nordic states’ strong contemporary social indicators to understand whether their successes can be replicated…

78

Abstract

Purpose

In this article, we examine the historical and cultural foundations of Nordic states’ strong contemporary social indicators to understand whether their successes can be replicated in other contexts.

Design/methodology/approach

We draw on a range of academic literature to frame a comparison of two regions’ cultural and theological roots, identifying contrasts to make arguments about prescriptions for contemporary welfare policy.

Findings

We find Nordic history contributes to a duty-based culture with strong cohesion and social trust. These cultural norms make palatable welfare policies with strong activation measures, while the US model prefers to avoid the latter because of its strong cultural orientation to rights and autonomy.

Social implications

To mitigate differences between the Nordic states and other cultural contexts, policymakers seeking to replicate Nordic welfare successes should consider welfare programming that combines stronger activation policies with oversight and relational components that mitigate gaps in social cohesion.

Originality/value

We uniquely bring together the literature on comparative welfare policy and on religion and culture to understand the precursors of contemporary attitudes and their implications for welfare policy prescriptions.

Details

International Journal of Sociology and Social Policy, vol. 44 no. 9/10
Type: Research Article
ISSN: 0144-333X

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