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1 – 10 of 306J. Buckley, B. O'Flynn, J. Barton and S.C. O'Mathuna
The purpose of this paper is to develop a highly miniaturized wireless inertial sensor system based on a novel 3D packaging technique using a flexible printed circuit (FPC). The…
Abstract
Purpose
The purpose of this paper is to develop a highly miniaturized wireless inertial sensor system based on a novel 3D packaging technique using a flexible printed circuit (FPC). The device is very suitable for wearable applications in which small size and lightweight are required such as body area network, medical, sports and entertainment applications.
Design/methodology/approach
Modern wireless inertial measurement units are typically implemented on a rigid 2D printed circuit board (PCB). The design concept presented here is based around the use of a novel planar, six‐faceted, crucifix or cross‐shaped FPC instead of a rigid PCB. A number of specific functional blocks (such as microelectromechanical systems gyroscope and accelerometer sensors, microcontroller (MCU), radio transceiver, antenna, etc.) are first assigned to each of the six faces which are each 1 cm2 in area. The FPC cross is then developed into a 1 cm3, 3D configuration by folding the cross at each of five bend planes. The result is a low‐volume and lightweight, 1 cm3 wireless inertial sensor that can sense and send motion sensed data wirelessly to a base station. The wireless sensor device has been designed for low power operation both at the hardware and software levels. At the base station side, a radio receiver is connected to another MCU unit, which sends received data to a personal computer (PC) and graphical user interface. The industrial, scientific and medical band (2.45 GHz) is used to achieve half duplex communication between the two sides.
Findings
A complete wireless sensor system has been realized in a 3D cube form factor using an FPC. The packaging technique employed during the work is shown to be efficient in fabricating the final cubic system and resulted in a significant saving in the final size and weight of the system. A number of design issues are identified regarding the use of FPC for implementing the 3D structure and the chosen solutions are shown to be successful in dealing with these issues.
Research limitations/implications
Currently, a limitation of the system is the need for an external battery to power the sensor system. A second phase of development would be required to investigate the possibility of the integration of a battery and charging system within the cube structure. In addition, the use of flexible substrate imposes a number of restrictions in terms of the ease of manufacturability of the final system due to the requirement of the required folding step.
Practical implications
The small size and weight of the developed system is found to be extremely useful in different deployments. It would be useful to further explore the system performance in different application scenarios such as wearable motion tracking applications. In terms of manufacturability, component placement needs to be carefully considered, ensuring that there is sufficient distance between the components, bend planes and board edges and this leads to a slightly reduced usable area on the printed circuit.
Originality/value
This paper provides a novel and useful method for realizing a wireless inertial sensor system in a 3D package. The value of the chosen approach is that a significant reduction in the required system volume is achieved. In particular, a 78.5 per cent saving in volume is obtained in decreasing the module size from a 25 to a 15 mm3 size.
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María Alejandra Costa and Éric Montpetit
This chapter explores how the capacity of different sectors of the government influences which topics are prioritized in the legislative agenda. We focus on the complex and…
Abstract
This chapter explores how the capacity of different sectors of the government influences which topics are prioritized in the legislative agenda. We focus on the complex and challenging topic of agriculture and the environment in Brazil and analyze how it's framed in both the media and the legislature. Our analysis shows that, in normal circumstances, the governmental actors with the highest state capacity prevent threatening topics from entering the legislative agenda, biasing it toward the status quo. However, we find that the media can act as a tool for sectors with lower capacity to bring their priorities to the forefront and trigger a legislative response.
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Antóin Lawlor, Javier Torres, Brendan O'Flynn, John Wallace and Fiona Regan
DEPLOY is a successful technology demonstration project showing how state of the art technology can be implemented to achieve, continuous, real‐time monitoring of a river…
Abstract
Purpose
DEPLOY is a successful technology demonstration project showing how state of the art technology can be implemented to achieve, continuous, real‐time monitoring of a river catchment.
Design/methodology/approach
The DEPLOY system is a wide area network of monitoring stations delivering data in near real‐time. The demonstration sites chosen are based in the River Lee, which flows through Ireland's second largest city, Cork. The sites include monitoring stations in five zones considered typical of significant river systems and demonstrate the versatility of the technology available. Data were collected from stations at pre‐programmed intervals and transmitted to the DEPLOY servers either by short range ISM band radio or directly via the GSM GPRS network. The data were then processed and made available in a controlled manner at www.deploy.ie Findings – The project demonstrates the capability of multi‐sensor systems to remotely monitor temporal and spatial variations in water quality, through the identification of short‐term events. A system like DEPLOY could be used as a decision support tool by regulatory bodies in managing our aquatic environment with the potential to cut overall monitoring costs and provide better coverage representing long‐term trends in fluctuations of pollutant concentrations.
Originality/value
The demonstration of a truly heterogeneous water quality monitoring networked system was one of the first of its kind in Ireland. Based on the collected data DEPLOY can provide recommendations for water quality monitoring systems from various perspectives, technical, operational and strategic.
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Brendan O'Flynn, D. Laffey, J. Buckley, J. Barton and S.C. O'Mathuna
This paper aims to describe the simulation, design, development and characterisation of antennas for wireless sensor networks operating in a variety of environments, including an…
Abstract
Purpose
This paper aims to describe the simulation, design, development and characterisation of antennas for wireless sensor networks operating in a variety of environments, including an under water submarine application and more usual “open air” deployments.
Design/methodology/approach
The experimental test methodology, fixtures, conditions and results used to characterize the performance of these antennas (both state of the art commercially available and those developed in‐house) are presented.
Findings
The underwater test results show a near omni‐directional pattern about the three principal axes, thus showing that a spherical field has been achieved for localisation purposes (with a certain loss of resolution).
Originality/value
The paper focuses on the development of a new antenna scheme to enable under water communications between robotic agents.
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The literature on the vocabularies of motive and associated concepts of accounts, neutralizations, and aligning actions has been exceptionally productive in documenting how actors…
Abstract
The literature on the vocabularies of motive and associated concepts of accounts, neutralizations, and aligning actions has been exceptionally productive in documenting how actors mitigate the threat of stigmatization in a variety of circumstances. This paper reviews this literature that has been published since the last major reviews of this literature. It identifies two recent developments in the study of vocabularies of motive: account giving in situations of cultural ambiguity and in times of conflict. Taken together, this work yields several insights into how actors use motives to advance their goals. Finally, the chapter argues that the insights from this burgeoning body of work should be applied to the study of the culture wars. Such scholarship would help to further establish the importance of interactionist thought by correcting some of the limitations in current approaches to the study of cultural conflict that provides reified and overdetermined explanations.
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An emerging scholarly critique has claimed that entrepreneurial education triggers more neoliberalism in education, leading to increased inequality, neglect of civic values and an…
Abstract
Purpose
An emerging scholarly critique has claimed that entrepreneurial education triggers more neoliberalism in education, leading to increased inequality, neglect of civic values and an unjust blame of poor citizens for their misfortunes. The purpose of this paper is to develop a deeper understanding of this potentially problematic relationship between entrepreneurial education and neoliberalism.
Design/methodology/approach
A Hegelian dialectic method is used consisting of three steps. First, a thesis is articulated based on emerging literature, stating that entrepreneurial education triggers more neoliberalism in education. Then an antithesis is developed representing a logical opposite to the thesis. Finally, the resulting tensions are embraced in a synthesis that triggers deeper understanding.
Findings
The synthesis indicates that entrepreneurial education based on a self-oriented search for own happiness leads to more neoliberalism in education, and entrepreneurial education based on an others-oriented search for a meaningful impact on others mitigates some of the already strong neoliberal tendencies in education.
Research limitations/implications
Due to an overlap between the two constructs, happiness and meaningfulness, it is difficult to fully disentangle doing well from doing good. How these two opposites interact is a topic that requires more research.
Practical implications
A “students-as-givers” kind of entrepreneurial education could represent a way to reach teachers currently skeptical of entrepreneurial education due to its perceived connection to capitalism. This could also make entrepreneurial education relevant to a wider student audience.
Originality/value
The paper represents a rare attempt to reconcile critical and praising perspectives on entrepreneurial education.
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Gustav Hägg and Tobias Schölin
The purpose of this paper is to describe and analyze the foundation of higher education policies that have promoted entrepreneurship in Sweden since the mid-1990s.
Abstract
Purpose
The purpose of this paper is to describe and analyze the foundation of higher education policies that have promoted entrepreneurship in Sweden since the mid-1990s.
Design/methodology/approach
To do this, the authors use Bacchi’s (1999) “What’s the problem?” approach. A central assumption of which is that perceptions of a problem affect how its solution looks. Bacchi’s approach is described as a type of discourse analysis.
Findings
The authors show that problem definition within policies regarding the role and importance of entrepreneurship within higher education has explicitly been directed toward equipping individuals to develop action-orientated skills in the field of entrepreneurship. The equipment of action-oriented skills has implicitly been directed to individuals’ personal initiatives to meet explicit social and collective problems, fueling a neoliberal development and fostering an enterprising culture. The authors also show how policy creates a discourse, which may be characterized as “useful, unreflective citizens.”
Research limitations/implications
The study addresses the implicit steering that is being exercised through policies. This steering needs to be questioned and problematized in order to avoid blindly following the implied course of action.
Originality/value
The study contributes to current understanding of how entrepreneurship in higher education is both governed explicitly and implicitly, by policy, through the creation of new norms in society.
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Hen‐I Yang, Chao Chen, Bessam Abdulrazak and Sumi Helal
A decade and a half after the debut of pervasive computing, a large number of prototypes, applications, and interaction interfaces have emerged. However, there is a lack of…
Abstract
Purpose
A decade and a half after the debut of pervasive computing, a large number of prototypes, applications, and interaction interfaces have emerged. However, there is a lack of consensus about the best approaches to create such systems or how to evaluate them. To address these issues, this paper aims to develop a performance evaluation framework for pervasive computing systems.
Design/methodology/approach
Based on the authors' experience in the Gator Tech Smart House – an assistive environment for the elderly, they established a reference scenario that was used to guide the analysis of the large number of systems they studied. An extensive survey of the literature was conducted, and through a thorough analysis, the authors derived and arrived at a broad taxonomy that could form a basic framework for evaluating existing and future pervasive computing systems.
Findings
A taxonomy of pervasive systems is instrumental to their successful evaluation and assessment. The process of creating such taxonomy is cumbersome, and as pervasive systems evolve with new technological advances, such taxonomy is bound to change by way of refinement or extension. This paper found that a taxonomy for something so broad as pervasive systems is very complex. It overcomes the complexity by focusing the classifications on key aspects of pervasive systems, decided purely empirically and based on the authors own experience in a real‐life, large‐scale pervasive system project.
Originality/value
There are currently no methods or frameworks for comparing, classifying, or evaluating pervasive systems. The paper establishes a taxonomy – a first step toward a larger evaluation methodology. It also provides a wealth of information, derived from a survey of a broad collection of pervasive systems.
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