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Article
Publication date: 1 February 2000

Abstract

Details

Kybernetes, vol. 29 no. 1
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 27 June 2008

Lenin Mehedy, Sungyoung Lee, Salahuddin Muhammad Salim Zabir and Young‐Koo Lee

Presence of innumerable sensors, complex deduction of contexts from sensor data, and reusability of contextual information impose the requirement of middleware for context…

Abstract

Purpose

Presence of innumerable sensors, complex deduction of contexts from sensor data, and reusability of contextual information impose the requirement of middleware for context aware computing. Smart applications, hosted in myriad devices (e.g. PDA, mobile, PCs), acquire different contexts from the middleware and act intelligently based on the available contexts in a context‐aware computing environment. As the system grows larger, scalable delivery of contexts from the middleware to numerous context‐aware applications will be inevitable. However, pure unicast based or pure broadcast‐based dissemination cannot provide high scalability as well as low‐average latency. The purpose of this paper is to present a scalable context delivery mechanism for the middlewares to facilitate the development of larger context‐aware computing systems.

Design/methodology/approach

The proposed scheme is based on hybrid data dissemination technique where the most frequently requested data (e.g. HOT contexts) are delivered through multicast and the rest (e.g. COLD contexts) are delivered through unicast to reduce network traffic. The paper dynamically prioritizes and classifies the HOT and COLD context data depending on the number of requests and longest waiting time. Moreover, the division of bandwidth between the delivery of HOT and COLD contexts reduces average latency. Polling traffic is decreased by incorporating leasing mechanism. Extensive simulation is conducted to evaluate the proposed scheme.

Findings

The mechanism dynamically prioritizes and classifies the hot and cold context data depending on the request rate and longest waiting time. The solution addresses the push popularity problem that occurs in the passive as the passive clients access data without sending explicit requests. The leasing mechanism is incorporated to reduce the periodical requests (polling) for better performance.

Originality/value

The paper is of value in presenting a scalable context delivery mechanism for the middlewares to facilitate the development of larger context‐aware computing systems and also in presenting implementation details of a prototype that is developed using Jini framework and Java reliable multicast service (JRMS) library.

Details

International Journal of Pervasive Computing and Communications, vol. 4 no. 2
Type: Research Article
ISSN: 1742-7371

Keywords

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Article
Publication date: 25 October 2018

Maytham Alshadood, Scott Butler Harpin and Jini Puma

The purpose of this paper is to identify factors, within a framework for integration, associated with healthcare utilization (primary care use, dental care, and insurance…

Abstract

Purpose

The purpose of this paper is to identify factors, within a framework for integration, associated with healthcare utilization (primary care use, dental care, and insurance coverage) for Colorado refugees, by gender.

Design/methodology/approach

The Refugee Integration Survey and Evaluation project was a four-year longitudinal study of refugees that resettled in Colorado beginning in 2011. Refugees from Burma and Bhutan were used in this secondary data analysis. Various integration domains were explored as predictors, across gender groups, of the healthcare utilization outcome variables (physical exam in the past 12 months, dental exam in the past 12 months, and current healthcare coverage) using bivariate and multivariate logistic regression analyses.

Findings

In 2015, 73.1 percent of the sample reported accessing primary health care in the past year, and only 13.2 percent used dental care services. Nearly three-quarters reported having health insurance at the time of survey. In the adjusted models, there was a strong positive association between the outcome variable “physical exam” and the predictor variables “employment and economic self-sufficiency” (OR=0.70, p<0.001), “social bonding” (OR=3.73, p<0.001), and “safety and stability” (OR=2.23, p<0.001). Additionally, education and training predicted dental visit (OR=2.06, p<0.01). None of the integration domains were statistically significant predictors of dental visits in the adjusted models.

Originality/value

This study offers insights about facilitators and barriers to healthcare utilization uptake after resettling in a major US city. These findings can be used by agencies and governmental organizations to best tailor healthcare services and promotion of those services for this vulnerable population.

Details

International Journal of Migration, Health and Social Care, vol. 14 no. 4
Type: Research Article
ISSN: 1747-9894

Keywords

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Article
Publication date: 20 December 2007

Ricky Robinson, Jadwiga Indulska and Ted McFadden

The purpose of this paper is to characterise a number of current and future computing environments and summarises their resource discovery requirements. It then seeks to…

Abstract

Purpose

The purpose of this paper is to characterise a number of current and future computing environments and summarises their resource discovery requirements. It then seeks to analyse, with respect to the requirements of each environment, several established service discovery protocols and some newer protocols that are still in the research domain. In addition, the key features of a new resource discovery protocol that has been developed to operate with heterogeneous computing environments are described.

Design/methodology/approach

A comprehensive literature survey was undertaken, highlighting the shortcomings of existing resource discovery protocols with respect to large pervasive computing environments. Given the identified gaps in existing protocols, an alternative protocol is suggested.

Findings

The main findings of this paper relate to the identified shortcomings of existing resource discovery protocols. It was also found that a hybrid resource discovery protocol capable of spanning dynamic, mobile computing environments and more stable ones was able to overcome many of the challenges presented by large‐scale pervasive computing environments.

Originality/value

This paper presents comprehensive literature survey of the state‐of‐the‐art in resource discovery protocols, pointing out some of the problems that are not solved. The paper describes the design of an alternative protocol, and presents an evaluation of it. The pervasive computing research community can draw upon the survey and evaluation to guide the design of future resource discovery protocols for the increasingly dynamic world in which we live.

Details

International Journal of Pervasive Computing and Communications, vol. 3 no. 1
Type: Research Article
ISSN: 1742-7371

Keywords

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Book part
Publication date: 28 February 2017

Thomas M. Corsi and Sandor Boyson

Abstract

Details

Handbook of Logistics and Supply-Chain Management
Type: Book
ISBN: 978-0-8572-4563-2

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Article
Publication date: 19 September 2019

Jinying Xu, Ke Chen, Anna Elizabeth Zetkulic, Fan Xue, Weisheng Lu and Yuhan Niu

The practice of facility management (FM) has been evolving with the rapid development of pervasive sensing technologies (PSTs) such as sensors, automatic identification…

Abstract

Purpose

The practice of facility management (FM) has been evolving with the rapid development of pervasive sensing technologies (PSTs) such as sensors, automatic identification (auto-ID), laser scanning and photogrammetry. Despite the proliferation of research on the use of PSTs for FM, a comprehensive review of such research is missing from the literature. This study aims to cover the knowledge void by examining the status quo and challenges of the selected PSTs with a focus on FM.

Design/methodology/approach

This paper reviewed 204 journal papers recounting cases of using PSTs for FM. The reviewed papers were extracted from Elsevier Scopus database using the advanced search.

Findings

Findings of this study revealed that PSTs and FM applications form a many-to-many mapping, i.e. one PST could facilitate many FM applications, and one application can also be supported by various PSTs. It is also found that energy modeling and management is the most referred purpose in FM to adopt PSTs, while space management, albeit important, received the least attention. Five challenges are identified, which include high investment on PSTs, data storage problem, absence of proper data exchange protocols for data interoperability, a lack of mature data processing methods for data utilization and privacy of users.

Originality/value

This paper paints a full picture of PSTs adoption for FM. It pinpoints the promising explorations for tackling the key challenges to future development.

Details

Facilities , vol. 38 no. 1/2
Type: Research Article
ISSN: 0263-2772

Keywords

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Article
Publication date: 1 December 2005

Liisa Välikangas and Paul Merlyn

Imagine a world without turnarounds – just well‐managed companies. Strategic exploration is the means to achieving strategic resilience. But how can senior managers build…

Abstract

Imagine a world without turnarounds – just well‐managed companies. Strategic exploration is the means to achieving strategic resilience. But how can senior managers build organizations where strategic exploration is the rule rather than the exception? First, by exhibiting the courage to explore, and second, by confronting the uncomfortable truths that such exploration might uncover. The article presents a simple but powerful framework, conceived by the Woodside Institute, for strategic exploration. The framework identifies which discoveries merit most attention (“strategic breakthroughs”), which deserve further consideration (“self‐discoveries” and “windows of opportunity”), and which will lead to the back of beyond (“duds”). Examples are drawn from IBM, AT&T, Intel, Sony, Cisco, Hewlett‐Packard, Nokia, Sun Microsystems, and the Coca‐Cola Company.

Details

Handbook of Business Strategy, vol. 6 no. 1
Type: Research Article
ISSN: 1077-5730

Keywords

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Article
Publication date: 1 November 2001

Edward Finch

Conventional wisdom suggests that the complete integration of building automation systems is the final outcome in the evolution of intelligent buildings. Security systems…

Abstract

Conventional wisdom suggests that the complete integration of building automation systems is the final outcome in the evolution of intelligent buildings. Security systems, energy management systems, fire alarm systems are some of the automation systems that are converging to produce a single integrated environment for building automation. These systems can execute global strategies so that the building is able to function in harmony. But one question is starting to emerge from this seemingly inevitable convergence. Is the consolidation of a single building automation protocol actually precluding possibilities for communication beyond the building automation sphere? The organic nature of the modern built environment requires cooperation between organizational activities, means of production and the facility itself. This process of integration cannot be achieved whilst the building operation is seen to be independent from other communication and control systems. Argues that the process of integrating building systems may in fact isolate such systems from a much broader range of information technology systems. Describes the use of embedded Web servers, an area where open integration might be developed. Divergence rather than convergence appears to be the future for building automation systems.

Details

Facilities, vol. 19 no. 11/12
Type: Research Article
ISSN: 0263-2772

Keywords

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Article
Publication date: 4 April 2008

Giuseppe Portelli, Giovanni Malnati and Fabio Forno

Home networks enable, potentially, an increased level of integration among appliances present in the house, enabling an ubiquitous control of devices and simplifying…

Abstract

Purpose

Home networks enable, potentially, an increased level of integration among appliances present in the house, enabling an ubiquitous control of devices and simplifying man/machine interactions. This paper aims to present the home network interoperability (HoNeY) platform.

Design/methodology/approach

Home networks and their challenges are analyzed, then the technology that constitutes the base for the present implementation is briefly revised. The HoNeY platform is presented, in terms of its architecture, implementation, and constraints.

Findings

The HoNeY platform is an multimedia home platform (MHP)‐based, low‐complex, cost‐effective architecture for automatic discovery, configuration, and dynamic access to distributed services in home environments.

Originality/value

This paper describes HoNeY, a mechanism of service discovery and code mobility designed for interoperability of devices connected to home networks, compatible with the MHP standard.

Details

International Journal of Pervasive Computing and Communications, vol. 4 no. 1
Type: Research Article
ISSN: 1742-7371

Keywords

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Article
Publication date: 21 November 2008

D. Villa, F.J. Villanueva, F. Moya, F. Rincón, J. Barba and J.C. López

The purpose of this paper is to present a new service discovery protocol (SDP) suitable for wireless sensor networks (WSN). The constraints imposed by ultra low‐cost…

Abstract

Purpose

The purpose of this paper is to present a new service discovery protocol (SDP) suitable for wireless sensor networks (WSN). The constraints imposed by ultra low‐cost sensor and actuators devices (basic components of a WSN) are taken into account to minimize the overall footprint.

Design/methodology/approach

It is based on the lightweight WSN communication model used by picoObjects, a tiny implementation of the distributed object concept and the same design criteria are followed, aiming at minimal overhead for devices and communication protocols. In spite of its simplicity it is powerful enough to deploy a valuable set of services.

Findings

This approach provides a remote interface that client applications can use without knowing where the service is implemented (platform and location independence).

Research limitations/implications

The future work is mainly focused on integrating third party services using different SDPs, making possible the real deployment of large heterogeneous pervasive environments.

Practical implications

Designers may change the underlying SDP model (e.g. centralized versus distributed) without affecting applications by just tweaking configuration settings.

Originality/value

Embedded devices can participate in the service discovering procedure providing their own services by means of standard distributed objects. Also, the protocol is suitable for any kind of dynamic networked system.

Details

International Journal of Pervasive Computing and Communications, vol. 4 no. 4
Type: Research Article
ISSN: 1742-7371

Keywords

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