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1 – 10 of 577Brendan O'Flynn, S. Bellis, K. Mahmood, M. Morris, G. Duffy, K. Delaney and C. O'Mathuna
To describe the development of a three dimensional programmable transceiver system of modular design for use as a development tool for a variety of wireless sensor node…
Abstract
Purpose
To describe the development of a three dimensional programmable transceiver system of modular design for use as a development tool for a variety of wireless sensor node applications.
Design/methodology/approach
As a stepping‐stone towards the development of wireless nodes, sensor networks programme was put in place to develop a 25 mm cube module, which was modular in construction, programmable and miniaturised in form factor. This was to facilitate the development of wireless sensor networks for a variety of different applications. The nodes are used as a platform for sensing and actuating through various parameters, for use in scalable, reconfigurable distributed autonomous sensing networks in a number of research projects currently underway in the Tyndall Institute, as well as other institutes and in a variety of research programs in the area of wireless sensor networks.
Findings
The modular construction enables the heterogeneous implementation of a variety of technologies required in the arena of wireless sensor networks: Intelligence, numerical processing, memory, sensors, power supply and conditioning, all in a similar form factor. This enables rapid deployment of different sensor network nodes in an application specific fashion.
Research limitations/implications
Characterisation of the transceiver module is ongoing, particularly in the field of the wireless communication platform utilized, and its capabilities.
Practical implications
A rapid prototyping and development cycle of application specific wireless sensor networks has been enabled by the development of this modular system.
Originality/value
This paper provides information about the development work and some potential application areas made available by the implementation of a miniaturised modular wireless sensor node for use in a variety of application scenarios.
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Jamiu Adetayo Adeniran, Rafiu O. Yusuf, Michael O. Amole, Lukuman Adekilekun Jimoda and Jacob Ademola Sonibare
The introduction of mobile telecommunication services in Nigeria led to the development of base transceiver stations (BTS) across the country. Inadequate power supply from the…
Abstract
Purpose
The introduction of mobile telecommunication services in Nigeria led to the development of base transceiver stations (BTS) across the country. Inadequate power supply from the national grid has led to massive use of diesel-fueled back-up generators (BUGs). The purpose of this paper is to attempt to quantify and inform relevant stakeholders about air quality implications of BTS BUGs.
Design/methodology/approach
Seven major telecommunication network operators were identified. Emission factor approach was used to estimate the quantity of important air pollutants such as NOx, CO, SO2, PM10, PM2.5, PAH and TVOC that are emitted from the use of the BUGs based on fuel consumption rate and generators’ capacity. Fuel-based emission inventory and emission factor from the United States Environmental Protection Agency AP-42 and National Pollution Inventory were used to estimate pollutants emission from diesel-powered generators used in the BTS sites and amount of diesel consumed. Land distribution and per capita dose of the estimated pollutants load were calculated.
Findings
The study showed that the deployment of BUGs will lead to increase emissions of these air pollutants. The states that are most affected are Lagos, Kano and Oyo, Katsina and Akwa Ibom states with respective total air pollutants contribution of 9,539.61, 9,445.34, 8,276.46, 7,805.14 and 7,220.70 tonnes/yr.
Originality/value
This study has estimated pollutant emissions from the use of diesel-fueled BUGs in mobile telecommunications BTS sites in Nigeria. The data obtained could assist in policy making.
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Vladan Borovic, Petar Spalevic, Srdjan Jovic, Damir Jerkovic, Vida Drasute and Dejan Rancic
This paper aims to show the implementation in the terrestrial trunked radio (TETRA)-based sensor network. The publicly available data show that, in Serbia, the annual damage…
Abstract
Purpose
This paper aims to show the implementation in the terrestrial trunked radio (TETRA)-based sensor network. The publicly available data show that, in Serbia, the annual damage caused by hailstorms in the past seven years has been estimated almost at an average level of 40m of euros. As the amount of hail was not changed, the hail suppression system of the Republic of Serbia has to be improved, both technically and organizationally, to get better efficiency and protection and to reduce the damage.
Design/methodology/approach
In this paper, the authors show the implementation and improvements in the modern terrestrial trunked radio (TETRA)-based sensor network, and they propose the scientific use of sensors for remote control of automatic hail suppression rocket stations.
Findings
The authors’ idea is that TETRA should be used as an operational and official telecommunicating system for hail suppression activities units. A number of sensors, connected in a network, are used to maintain a high-quality functioning of this digital radio system, managed remotely and controlled either by operators or automatically.
Originality/value
The presented study with a real example attempts to explain as to how the system functions and how it can improve hail suppression activities.
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James Geisbush and Samuel T. Ariaratnam
Reliability centered maintenance (RCM) is a process used to determine activities to be taken to ensure an asset continues to perform asset's function in asset's present operating…
Abstract
Purpose
Reliability centered maintenance (RCM) is a process used to determine activities to be taken to ensure an asset continues to perform asset's function in asset's present operating context by identifying asset's function, failure modes that could preclude performing asset's intended function, prioritizing failure modes and determining effective preventative maintenance tasks that can be cost effectively and efficiently implemented to reduce the likelihood of a failure.
Design/methodology/approach
A comprehensive survey of literature was undertaken to examine the current industry state of practice. Various industries were examined to better understand applications of RCM within the various industry sectors and determine those industries that RCM has not historically been readily adopted. A case study example of RCM applied to radial gates for water control in open channel canals for water conveyance is presented to demonstrate a civil infrastructure application.
Findings
The results found that RCM has been used since RCM's inception in the airline industry during the 1960s to reduce the cost of maintaining aircrafts. Over the past 40 years, an assortment of industries has begun implementing cost effective preventative maintenance tasks identified during RCM analysis. However, there is a noticeable lack of civil assets being analyzed by RCM, such as water conveyance systems and other civil infrastructure systems vital to the health and well-being of today's societies.
Originality/value
The comprehensive literature review of the current state of practice will provide a better understanding of the various applications of RCM to facilitate RCM's application to other industries, thereby reducing failure due to early identification of maintenance tasks. An example RCM demonstrates the application to a radial gate, used in water conveyance for the drinking water and irrigation sectors, which have not historically used RCM for developing maintenance strategies.
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Operational Management, Strategic Management and Marketing Management.
Abstract
Subject area
Operational Management, Strategic Management and Marketing Management.
Study level/applicability
The case can be taught in introductory marketing courses and management and organizational policy course and in advanced level in promotion, distribution channels, marketing research, consumer behavior and brand management courses at graduate level. Importance of market and technological research; first mover advantage and disadvantages in new market segment; importance of competition in a market; use of PESTL analysis before pursuing for any segment; types of growth strategies which could be used that is Broad base or Narrow base; how company uses marketing mix strategy; and how managers make decision in dynamic environment (contingency theory approach).
Case overview
This case study relates to a real-life situation the data was collected from primary and secondary sources between 2012 and 2013. The case is of a company Pakistan Accumulators (PAL), having less than 18 years of experience, has been able to grow successfully in the dynamic environment of Pakistan. The decline of the private businesses in Pakistan due to the energy crisis has popped up a new need of power generation alternative equipment in the country. PAL, which is a privately owned company, suppliers of automotive batteries, Uninterruptable Power System (UPS) batteries, lead acid batteries and rechargeable batteries has been able to manage the growth of 20 per cent per year. In this case study, we have highlighted only one market segment of the company that is of UPS batteries, we have focused on what is the future prospect of this particular segment, its attractiveness. Also, the area of focus was the new market segments which can be targeted by the company. Basic issues of the case study: calculation of the market segment value of UPS industry; identification and solution of different challenges faced by PAL in the dynamic Pakistani market (contingency theory); recognition of different future growth prospects for PAL.
Expected learning outcomes
The basic objective of this case is to enhance the analytical and qualitative skills of the students by giving them the real-life perspective of a company working successfully in country like Pakistan which is facing economic and political crises. This case can also be used for understanding the problems of third-world markets and how company can pursue successfully in the long–term.
Supplementary materials
Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.
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Lydia Oktarini and Hirotaka Kawano
This paper aims to provide feasible business model options that benefit all stakeholders; the government, the investor and especially the inhabitants in Maluku and Papua, the…
Abstract
Purpose
This paper aims to provide feasible business model options that benefit all stakeholders; the government, the investor and especially the inhabitants in Maluku and Papua, the less-favored business regions in Indonesia.
Design/methodology/approach
Three feasible business model options result from ICT for development literature, current role of the government, other models and investment scheme review, statistical analysis, technology analysis and investment simulations.
Findings
This paper proposes three different feasible business model options. The infrastructure subsidy model, which combines 20 per cent private investment and 80 per cent government subsidy, is the most feasible business model based on investment simulations. This model which combines 20 per cent private investment and 80 per cent government subsidy provides stronger determination of Indonesian Government for serving rural and remote people. The revenue subsidy and the mixed project subsidy are alternative models that may provide more attractive schemes from the standpoint of investors.
Research limitations/implications
However, current paper has limitation which is subject to enhance for better analysis in future research such as implementation of the in-depth assessment of risk management system to deal with all exposed risks.
Practical implications
This paper provides that setting up a complete telecommunication access infrastructures in eastern Indonesia is feasible under new proposed models.
Social implications
The new proposed models provide stronger determination of Indonesian Government for serving rural and remote people and minimizing the digital divide in eastern area.
Originality/value
Under the new proposed models, the role and capacity of the government is adjusted. The government should dominate and be less dependent on private investment. Also, the government should shift from triggering service penetration into developing a complete infrastructure set up.
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Abstract
Muhammad Yasir Faheem, Muhammad Basit Azeem, Abid Ali Minhas, Shun'an Zhong and Xinghua Wang
RF transceiver module is considered a vital part of any wireless communication system. This module consists of two important parts the RF transceiver and analog-to-digital…
Abstract
Purpose
RF transceiver module is considered a vital part of any wireless communication system. This module consists of two important parts the RF transceiver and analog-to-digital converter (ADC). Usually, both these parts – RF transceiver and ADC – are used to enhance the perspective of size and power. The data processing in 4G communication makes hurdles and need research attention to make it faster and smaller in size. Accuracy and fast processing are the critical challenges in the modern communication system.
Design/methodology/approach
After theoretical and practical investigations, this research work proposes key new techniques for the RF transceiver module. These techniques will make RF transceiver small, power-efficient and on the other hand, make dual SAR-ADC more effective as well. The proposed design has no intermediate frequency where the RF transceiver is reduced its major blocks from five to four, which includes crystal oscillator, phase lock loop, power amplifier and low noise amplifier. Moreover, the shared circuitry is introduced in the architecture of the SAR-ADC for the production of dual outputs, specifically in bootstrapped switch and comparator.
Findings
The miniaturized RF transceiver and SAR-ADC are well tested separately before the plantation on the printed circuit board (PCB). The operating voltage and frequency of the RF transceiver module are 1.2 V and 5.8 GHz, where the sampling rate, bandwidth and output power are 25 MHz, 200 MHz and 5 dBm, respectively. The core area of the PCB is 58.13 mm2. The bandwidth efficiency is 93% using surface acoustic wave less transmitter. The circuit is based on the library of 90 nm CMOS technology.
Originality/value
The entire circuit is highly synchronized with the input and reference clocks to avoid self-interference.
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K. Arshak, A. Arshak, E. Jafer, D. Waldern and J. Harris
To develop a wireless sensor micro‐systems containing all the components of data acquisition system, such as sensors, signal‐conditioning circuits, analog‐digital converter…
Abstract
Purpose
To develop a wireless sensor micro‐systems containing all the components of data acquisition system, such as sensors, signal‐conditioning circuits, analog‐digital converter, embedded microcontroller unit (MCU), and RF communication modules. This has now become the focus of attention in many biomedical applications.
Design/methodology/approach
The system prototype consists of miniature FSK transceiver integrated with MCU in one small package, chip antenna, and capacitive interface circuitry based on Delta‐sigma modulator. At the base station side, an FSK receiver/transmitter is connected to another MCU unit, which send the received data or received instructions from a PC through a graphical user interface GUI. Industrial, scientific and medical band RF (433 MHz) was used to achieve half duplex communication between the two sides. A digital filtering has been used in the capacitive interface to reduce noise effects forming capacitance to digital converter. All the modules of the mixed signal system are integrated in a printed circuit board of size 22.46 × 20.168 mm.
Findings
An innovation circuits and system techniques for building advanced smart medical devices have been discussed. Low‐power consumption and high reliability are among the main criteria that must be given priority when designing such wirelessly powered microsystems. Switched capacitors readout circuits have been found to be suitable for pressure sensing low‐power applications.
Research limitations/implications
The presented wireless prototype needs a second phase of development that will lead to a further reduction in both size and power consumption. Currently, the main limitation of the RF system is the number of working hours according to the selected battery.
Practical implications
The developed system was found to be useful in terms of measuring pressure and temperature in a system of either slow or fast physical change. It would be a good idea to explore the system performance in human or animal trials.
Originality/value
This paper fulfils useful information for capacitive interface circuitries and presents a new short‐range wireless system that has different design features.
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This paper aims to considers how to extend RFID applications given the limited funds and budgets in libraries. RFID can replace barcodes and magnetic strips for security control…
Abstract
Purpose
This paper aims to considers how to extend RFID applications given the limited funds and budgets in libraries. RFID can replace barcodes and magnetic strips for security control and collections management.
Design/methodology/approach
This study describes the Shih‐Hsin University Library UHF RFID system which uses long distance induction to assist in three innovative applications. The three applications are regional seeking and positioning for collections in mis‐shelves or collections loss in library, statistics calculation in usage frequency and length of book reading, and instant library guiding service. This research explains the implementation of the tag frequency, the construction of the multi‐transceiver and existing TCP/IP network appliances.
Findings
The application not only estimates benefits in advance and lower the risk of failure setups, but it also provides innovative library services.
Originality/value
This study discusses issues and possible solutions in the process of implementing RFID applications for three innovative applications in library services.
Details