Search results

1 – 10 of over 83000
Article
Publication date: 9 March 2015

Ruben Verborgh, Seth van Hooland, Aaron Straup Cope, Sebastian Chan, Erik Mannens and Rik Van de Walle

The purpose of this paper is to revisit a decade after its conception the Representational State Transfer (REST) architectural style and analyzes its relevance to address current…

Abstract

Purpose

The purpose of this paper is to revisit a decade after its conception the Representational State Transfer (REST) architectural style and analyzes its relevance to address current challenges from the Library and Information Science (LIS) discipline.

Design/methodology/approach

Conceptual aspects of REST are reviewed and a generic architecture to support REST is presented. The relevance of the architecture is demonstrated with the help of a case study based on the collection registration database of the Cooper-Hewitt National Design Museum.

Findings

The authors argue that the “resources and representations” model of REST is a sustainable way for the management of web resources in a context of constant technological evolutions.

Practical implications

When making information resources available on the web, a resource-oriented publishing model can avoid the costs associated with the creation of multiple interfaces.

Originality/value

This paper re-examines the conceptual merits of REST and translates the architecture into actionable recommendations for institutions that publish resources.

Details

Journal of Documentation, vol. 71 no. 2
Type: Research Article
ISSN: 0022-0418

Keywords

Article
Publication date: 6 December 2021

Soyoung Kim, Kyunghi Hong and Heeran Lee

This study aims to provide information on how to monitor the temperature setting of a heating device in order to implement a heating unit successfully in the smart clothing by…

Abstract

Purpose

This study aims to provide information on how to monitor the temperature setting of a heating device in order to implement a heating unit successfully in the smart clothing by observing voluntary heating behavior of wearers.

Design/methodology/approach

Subjects wearing base layers and additional clothing were asked to turn on and off the switch when wanted in the cold environmental chamber. Tolerable range of skin temperature (TST) depending on the location of body was obtained by observing the temperature at the time when the heating device was turned on and off during a rest–running–rest protocol.

Findings

The TST was 32.8–49.4 °C and decreased to 31.3–37.6 °C around abdomen and back waist, respectively. Changes in the wearers' voluntary control behavior were observed depending on the individual's level of cold-sensitivity and activity level of rest and running. TST was 35.8–49.4 °C (Rest 1: rest before exercise), 40.0–42.0 °C (Running) and 35.3–43.2 °C (Rest 2: rest after exercise) for cold-sensitive group, whereas it was 32.8–36.2 °C (Running) and 34.4–45.7 °C (Rest 2: rest after exercise) for cold-insensitive group.

Originality/value

In this study, results with detailed body locations and wearer's thermal sensitivity provide practical references for the implementation of a heating device to the comfortable multilayered smart clothing.

Details

International Journal of Clothing Science and Technology, vol. 33 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 15 February 2013

S. Udhayakumar, P.V. Mohanram, P. Keerthi Anand and R. Srinivasan

Identifying the most probable natural resting orientation of a part, in automatic handling, helps in the effective design of feeder and orientation devices. For parts with complex…

Abstract

Purpose

Identifying the most probable natural resting orientation of a part, in automatic handling, helps in the effective design of feeder and orientation devices. For parts with complex geometries and topologies, it is not always intuitively apparent what the natural resting probability of each orientation is. The purpose of this paper is to determine, by theoretical methods, the probability of occurrence of each natural resting orientation of eight different typical sector shaped parts.

Design/methodology/approach

Probability of natural resting orientations were found using theoretical methods and drop test. Pearson's χ2 test was used to decide whether to accept or reject the expected data by comparing with the observed data.

Findings

Irrespective of dimensions and material, the most probable natural resting orientation was the same. Height of drop was influential in the probability of most probable natural resting orientation.

Research limitations/implications

The research does not include objects with minimum thickness (i.e. 2D objects).

Originality/value

The paper shows that determining the most probable natural resting orientation will help designers to design the part feeders effectively.

Article
Publication date: 1 June 2005

Li‐teh Sun

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American…

Abstract

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American preemptive invasion and occupation of Afghanistan and Iraq and the subsequent prisoner abuse, such an existence seems to be farther and farther away from reality. The purpose of this work is to stop this dangerous trend by promoting justice, love, and peace through a change of the paradigm that is inconsistent with justice, love, and peace. The strong paradigm that created the strong nation like the U.S. and the strong man like George W. Bush have been the culprit, rather than the contributor, of the above three universal ideals. Thus, rather than justice, love, and peace, the strong paradigm resulted in in justice, hatred, and violence. In order to remove these three and related evils, what the world needs in the beginning of the third millenium is the weak paradigm. Through the acceptance of the latter paradigm, the golden mean or middle paradigm can be formulated, which is a synergy of the weak and the strong paradigm. In order to understand properly the meaning of these paradigms, however, some digression appears necessary.

Details

International Journal of Sociology and Social Policy, vol. 25 no. 6/7
Type: Research Article
ISSN: 0144-333X

Keywords

Article
Publication date: 8 October 2019

Korti Mohammed Choukri, Korti Abdel Illah Nabil and Abboudi Said

High-pressure die casting is one of the manufacturing techniques used for the rational mass production of metal parts. Due to the high velocity of the molten metal during the…

114

Abstract

Purpose

High-pressure die casting is one of the manufacturing techniques used for the rational mass production of metal parts. Due to the high velocity of the molten metal during the injection phase, the die casting of aluminum is so complex and it is almost impossible to calculate these exact performances. Numerical simulation is an effective way to optimize the injection phase and minimize air entrapment that causes porosity defects in the metal. Generally, the filling phase of the molten metal in the shot sleeve is neglected in most scientific work. This phase is followed by a rest period to allow the escape of the resident air bubbles (gravity effect). The paper aims to discuss these issue.

Design/methodology/approach

It is relatively clear that the model described poses a great challenge for numerical implementation, especially for 3D geometries. The governing transport equations are solved numerically using the commercial CFD solver Fluent and the equations are discretized using a pressure-based finite volume method. The coupling pressure–velocity was solved by the PISO algorithm. The PISO algorithm takes relatively more CPU time per solver iteration, but it significantly decreases the number of iterations required for the convergence of the transient flow problems. Laminar flow inside air and molten metal was assumed. In order to describe the behavior of the molten metal, a VOF model has been activated. The model makes it possible to account for the moving boundary due to the variation of the shot sleeve volume caused by the plunger displacement. The scheme used in the discretization of momentum equation was the first-order upwind scheme, and the scheme used for the pressure was the PRESTO. The profile of the plunger velocity, boundary conditions change with time and the physical properties change with liquid fraction were used by implementation of a user-defined function. For the discretization of the domain, an unstructured mesh with triangular elements is used. After conducting mesh sensitivity study, a mesh having 53,813 triangular elements has been chosen for the present study. The convergence criterion was set equal to 10–4 for all parameters.

Findings

The results show that the rest and global filling times increase by 2.5 and 8.57 percent with decreasing the pouring velocity by 10 percent. In addition, the rest and global filling times decrease by 5.77 and 8.12 percent with increasing the pouring velocity by 10 percent.

Originality/value

After the filling phase, it is necessary to offer a rest period before the injection phase. However, the rest and global filling times increase by 2.5 and 8.57 percent with decreasing the pouring velocity by 10 percent. In addition, the rest and global filling times decrease by 5.77 and 8.12 percent with increasing the pouring velocity by 10 percent. Increasing the pouring velocity by 10 percent leads increasing of the molten metal velocity in the shot sleeve and requires a delay of time of the beginning of the faster plunger movement by 7–10.5 percent. On the other hand, Figure 12 shows that increasing the pouring velocity requires increasing of the plunger velocity during the injection phase, thus increasing the pouring velocity. In order to overcome this problem, it is necessary to reduce the injection velocity and prolong the period of the slower plunger movement.

Details

Multidiscipline Modeling in Materials and Structures, vol. 15 no. 6
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 1 February 1970

Parker of, J. Cooke and J. Bridge

June 30, 1969 Master and servant — Contract of service — Lorry driver — Statutory rest period — Contractual option of cutting scrap during rest period — Whether “rest” — Road…

Abstract

June 30, 1969 Master and servant — Contract of service — Lorry driver — Statutory rest period — Contractual option of cutting scrap during rest period — Whether “rest” — Road Traffic Act, 1960 (c.16), s. 73

Details

Managerial Law, vol. 7 no. 5
Type: Research Article
ISSN: 0309-0558

Article
Publication date: 9 August 2013

José M. de la Torre‐Ruiz and J. Alberto Aragón‐Correa

The purpose of this paper is to examine how, within a team, the value of their best member depends critically on the performance of the rest. Analysis of the interdependent team…

1374

Abstract

Purpose

The purpose of this paper is to examine how, within a team, the value of their best member depends critically on the performance of the rest. Analysis of the interdependent team members complements the traditional focus of resource‐based‐view analyses of isolated resources.

Design/methodology/approach

The authors used data from 584 National Basketball Association teams (30 teams collected over 21 seasons).

Findings

The authors find a positive relationship between best member performance and team performance that increases as the rest of the team members’ performance improves.

Practical implications

Having team members with a high individual performance does not imply that the team will have a competitive advantage over the rest. To gain this advantage, it is also necessary that the rest of the team members also show a high individual performance.

Originality/value

These results contribute to the team literature increasing our knowledge about the effect of complementary resources on gaining competitive advantage. Additionally, sports teams offer the possibility of using objective data to assess team members’ individual value within a team.

Article
Publication date: 26 February 2019

Debabrata Dutta and Somnath Ghosh

This paper aims to investigate the effect of delayed water curing on the mechanical and microstructural properties of fly ash-based geopolymer paste-blended with Ground Granulated…

Abstract

Purpose

This paper aims to investigate the effect of delayed water curing on the mechanical and microstructural properties of fly ash-based geopolymer paste-blended with Ground Granulated Blast Furnace Slag (GGBS) with different rest periods.

Design/methodology/approach

The blended geopolymer paste was composed of GGBS (15 per cent of the total weight) and the base material, Fly Ash (FA). The blended mix was activated by activator solution (Sodium hydroxide and Sodium silicate) containing 6 per cent Na2O of total base material. The effect of delayed water curing has been studied by gradually increasing the aging period (Rest Period) from 2 hours to 24 hours in the formation of activated outcome along with Calcium Silicate Hydrate (CSH). To analyze the mechanical and microstructural properties of the resultant blended geopolymer paste, compressive strength test, FESEM and XRD have been carried out. Moreover, a long-term durability test subjected to sulphate exposure has been performed to evaluate the durability of the designed sustainable geopolymer paste.

Findings

The present paper shows that the delayed water curing incorporates secondary heat input enhancing the partial polymer formation along with CSH. Slag-blended AAFA-based geopolymer paste is seen to exhibit quick setting property. Also, AAFA-based geopolymer paste samples subjected to longer rest period show early strength gain at a high rate under water curing as compared to those subjected to the shorter rest period.

Originality/value

To the best of authors’ knowledge, the effect of delayed water curing on the mechanical and microstructural properties of slag-blended AAFA-based geopolymer paste has not been studied before.

Details

World Journal of Engineering, vol. 16 no. 1
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 12 October 2012

Tim Vanderpyl

The article aims to describe the reasons that rest is an important part of leadership.

879

Abstract

Purpose

The article aims to describe the reasons that rest is an important part of leadership.

Design/methodology/approach

The benefits of rest to the organization and to the individual are explained. The article advances practical strategies that leaders can implement in their teams to replenish the energy levels within them.

Findings

The article details the importance of creating mandatory “no smart‐phone” times with teams; ensuring and enforcing a mandatory “no contact” practice between employees and the office while they are on vacation; finding ways to creatively praise employees who ask for time off for special family events, rather than praising those who sacrifice family events for the sake of work projects; and finding reasons, when possible, to send employees home early at random times with the mandate to relax at home.

Practical implications

It is explained that rest is essential to success as leaders. Leaders cannot perform at maximum efficiency 100 percent of the time.

Social implications

It is argued that society reveres leaders for their work ethic, but rarely for their “rest ethic”, and that a better balance between the two is needed.

Originality/value

The article focuses on how leaders regenerate energy after expending it.

Details

Human Resource Management International Digest, vol. 20 no. 7
Type: Research Article
ISSN: 0967-0734

Keywords

Open Access
Article
Publication date: 8 July 2019

Azaiez Ouled Belgacem, Farah Ben Salem, Mouldi Gamoun, Roukaya Chibani and Mounir Louhaichi

The purpose of this paper is to illustrate the benefits of reintroducing traditional grazing systems practices for improving arid rangelands. Grazing is the most extensive land…

1849

Abstract

Purpose

The purpose of this paper is to illustrate the benefits of reintroducing traditional grazing systems practices for improving arid rangelands. Grazing is the most extensive land use in southern Tunisia, but the rangelands have suffered many decades of severe degradation due to profound socioeconomic changes and the emergence of an agro-pastoral society in place of the former pastoral one. Traditional grazing systems (gdel and herd mobility), which had historically allowed for grazing deferment and control of grazing livestock were abandoned. Yet grazing management strategies are important tools to sustain integrated livestock rangeland production systems in dry areas in the face of ongoing climate change and human pressure.

Design/methodology/approach

This study assesses the revival of traditional best practices of rangeland resting in a representative community. Total plant cover, species composition, flora richness and range production were determined in six rangeland sites subjected respectively to one, two and three years of rest; one and two years of light grazing after rest; and free grazing (control).

Findings

Results showed that dry rangelands keep their resilience to the negative effects of climate change once human pressure is controlled. A maximum of two years of rest is enough to sustainably manage the rangelands in southern Tunisia, as this protection showed considerable and positive effects on the parameters scored.

Originality/value

The revival of the traditional best practices under new arrangements adapted to current biophysical and socioeconomic conditions would be an excellent tool to mitigate the negative effects of frequent droughts and reduce the animal feed costs that poor farmers face.

Details

International Journal of Climate Change Strategies and Management, vol. 11 no. 5
Type: Research Article
ISSN: 1756-8692

Keywords

1 – 10 of over 83000