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Article
Publication date: 14 June 2013

James M. Coughlan and Huiying Shen

The purpose of this paper is to describe recent progress on the “Crosswatch” project, a smartphone‐based system developed for providing guidance to blind and visually impaired…

Abstract

Purpose

The purpose of this paper is to describe recent progress on the “Crosswatch” project, a smartphone‐based system developed for providing guidance to blind and visually impaired travelers at traffic intersections. Building on past work on Crosswatch functionality to help the user achieve proper alignment with the crosswalk and read the status of walk lights to know when it is time to cross, the authors outline the directions Crosswatch is now taking to help realize its potential for becoming a practical system: namely, augmenting computer vision with other information sources, including geographic information systems (GIS) and sensor data, and inferring the user's location much more precisely than is possible through GPS alone, to provide a much larger range of information about traffic intersections to the pedestrian.

Design/methodology/approach

The paper summarizes past progress on Crosswatch and describes details about the development of new Crosswatch functionalities. One such functionality, which is required for determination of the user's precise location, is studied in detail, including the design of a suitable user interface to support this functionality and preliminary tests of this interface with visually impaired volunteer subjects.

Findings

The results of the tests of the new Crosswatch functionality demonstrate that the functionality is feasible in that it is usable by visually impaired persons.

Research limitations/implications

While the tests that were conducted of the new Crosswatch functionality are preliminary, the results of the tests have suggested several possible improvements, to be explored in the future.

Practical implications

The results described in this paper suggest that the necessary technologies used by the Crosswatch system are rapidly maturing, implying that the system has an excellent chance of becoming practical in the near future.

Originality/value

The paper addresses an innovative solution to a key problem faced by blind and visually impaired travelers, which has the potential to greatly improve independent travel for these individuals.

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Content available
Article
Publication date: 14 June 2013

Roberto Manduchi, James Coughlan and Klaus Miesenberger

76

Abstract

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Article
Publication date: 14 June 2013

Harald Holone and Jo Herstad

The purpose of this paper is to bring together the fields of participatory design, design for all, accessible music, tangible interaction and musicking to propose musicking for…

Abstract

Purpose

The purpose of this paper is to bring together the fields of participatory design, design for all, accessible music, tangible interaction and musicking to propose musicking for all, where participants can take part on their own terms, with their own intentions, initiatives and interpretations. The goal is to promote well‐being and health among the participants.

Design/methodology/approach

Co‐creative tangibles to enable musicking for all have been created and evaluated in a research project. The paper uses the experiences so far in this project to propose “musicking for all”, based on the fields mentioned in “Purpose” above.

Findings

Participatory design, design for all and tangible interaction forms a promising basis for musicking for all. Challenges/paradoxes emerge when applying participatory design approaches to design work involving disabled children.

Originality/value

The paper contributes with an original view on musicking for disabled children, and proposes musicking for all based on the fields of research mentioned in “Purpose” above. The value in the contribution is a fresh view on co‐creative tangibles for disabled children, and a suggested way forward to improve health and well‐being for this user group.

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Article
Publication date: 14 June 2013

Edgardo Molina, Alpha Diallo and Zhigang Zhu

The purpose of this paper is to propose a local orientation and navigation framework based on visual features that provide location recognition, context augmentation, and viewer…

Abstract

Propose

The purpose of this paper is to propose a local orientation and navigation framework based on visual features that provide location recognition, context augmentation, and viewer localization information to a blind or low‐vision user.

Design/methodology/approach

The authors consider three types of “visual noun” features: signage, visual‐text, and visual‐icons that are proposed as a low‐cost method for augmenting environments. These are used in combination with an RGB‐D sensor and a simplified SLAM algorithm to develop a framework for navigation assistance suitable for the blind and low‐vision users.

Findings

It was found that signage detection cannot only help a blind user to find a location, but can also be used to give accurate orientation and location information to guide the user navigating a complex environment. The combination of visual nouns for orientation and RGB‐D sensing for traversable path finding can be one of the cost‐effective solutions for navigation assistance for blind and low‐vision users.

Research limitations/implications

This is the first step for a new approach in self‐localization and local navigation of a blind user using both signs and 3D data. The approach is meant to be cost‐effective but it only works in man‐made scenes where a lot of signs exist or can be placed and are relatively permanent in their appearances and locations.

Social implications

Based on 2012 World Health Organization, 285 million people are visually impaired, of which 39 million are blind. This project will have a direct impact on this community.

Originality/value

Signage detection has been widely studied for assisting visually impaired people in finding locations, but this paper provides the first attempt to use visual nouns as visual features to accurately locate and orient a blind user. The combination of visual nouns with 3D data from an RGB‐D sensor is also new.

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Article
Publication date: 14 June 2013

Silvia Artoni, Maria Claudia Buzzi, Marina Buzzi, Claudia Fenili, Barbara Leporini, Simona Mencarini and Caterina Senette

Applied Behavior Analysis (ABA) is a scientific method for modelling human behavior, successfully applied in the context of Autism. Recording and sharing measurable data (on…

Abstract

Purpose

Applied Behavior Analysis (ABA) is a scientific method for modelling human behavior, successfully applied in the context of Autism. Recording and sharing measurable data (on subjects’ performance) between caregivers guarantees consistency of learning programs and allows monitoring the learning enhancements. Data are usually recorded on paper, which requires considerable effort and is subject to error. The purpose of this paper is to describe a portable application developed to support ABA tutors in their work with autistic subjects. It allows gathering data from ABA sessions, giving tutors rapid access to information, also in graphical formats.

Design/methodology/approach

The tool was designed via participatory design. Various ABA team members were involved, in order to make the application respond perfectly to their needs. The approach aims to ensure maximum usability, while minimizing errors and ambient interference.

Findings

The use of mobile devices (i.e. tablets or smartphones) allows mobility and ease of interaction, enabling efficient data collection and processing. Data plotting allows one to easily interpret gathered data.

Social implications

The proposed application, free open source software, can be a valuable aid for supporting the ABA intervention and favor the inclusion of children with autism.

Originality/value

Available software to assist tutors during therapy sessions is often proprietary, and research prototypes are not freely available, so paper forms are still widespread. Besides, without attention to usability requirements, assisting tools would be comparable in efficiency with data insertion on paper. Our software was specifically designed following ABA principles and favors efficient data entry allowing natural interaction with touch screen interfaces: drag and drop, taps and gestures. Furthermore, it is shared in the public domain.

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Article
Publication date: 14 June 2013

Wai Lun Khoo, Joey Knapp, Franklin Palmer, Tony Ro and Zhigang Zhu

The purpose of this paper is to demonstrate how commercially‐off‐the‐shelf sensors and stimulators, such as infrared rangers and vibrators, can be retrofitted as a useful…

Abstract

Purpose

The purpose of this paper is to demonstrate how commercially‐off‐the‐shelf sensors and stimulators, such as infrared rangers and vibrators, can be retrofitted as a useful assistive technology in real and virtual environments.

Design/methodology/approach

The paper describes how a wearable range‐vibrotactile device is designed and tested in the real‐world setting, as well as thorough evaluations in a virtual environment for complicated navigation tasks and neuroscience studies.

Findings

In the real‐world setting, a person with normal vision who has to navigate their way around a room with their eyes closed will quickly rely on their arms and hands to explore the room. The authors’ device allows a person to “feel” their environment without touching it. Due to inherent difficulties in testing human subjects when navigating a real environment, a virtual environment affords us an opportunity to scientifically and extensively test the prototype before deploying the device in the real‐world.

Research limitations/implications

This project serves as a starting‐point for further research in benchmarking assistive technology for the visually impaired and to eventually develop a man‐machine sensorimotor model that will improve current state‐of‐the‐art technology, as well as a better understanding of neural coding in the human brain.

Social implications

Based on 2012 World Health Organization, there are 39 million blind people. This project will have a direct impact on this community.

Originality/value

The paper demonstrates a low cost design of assistive technology that has been tested and evaluated in real and virtual environments, as well as integration of sensor designs and neuroscience.

Details

Journal of Assistive Technologies, vol. 7 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Content available
Article
Publication date: 15 March 2013

Chris Abbott

81

Abstract

Details

Journal of Assistive Technologies, vol. 7 no. 1
Type: Research Article
ISSN: 1754-9450

Article
Publication date: 1 February 1995

James O. Fiet and Rita D. Kosnik

The use of covariance structure modeling is explored as a means of moving toward a resolution of the debate over the antecedents of executive compensation. The major strength of…

Abstract

The use of covariance structure modeling is explored as a means of moving toward a resolution of the debate over the antecedents of executive compensation. The major strength of this methodology is that it enables researchers to measure the effects of unobserved factors on measured variables. It is suggested that covariance structure modeling is a promising way of studying the effect of institutional isomorphism on executive compensation. The popular business press has questioned repeatedly the justification for and the performance effects of prevailing executive compensation systems (Crystal, 1988; Loomis, 1982; Patton, 1985). These articles argue that executives are more interested in creating wealth for themselves than for stockholders. They also underscore the absence of an obvious link between executive compensation and firm performance. Recent academic research on executive compensation adopts an agency perspective that emphasizes potential conflicts of interest between managers and stockholders. It contends that, in the absence of effective disciplining and monitoring systems, executive compensation plans may direct managers' efforts toward personal wealth enhancement to the detriment of firm value (Baumol, 1958; Berle & Means, 1932). In response, scholars have urged that executive compensation plans contain monetary incentives that only accrue to executives when shareholder wealth is maximized (Kerr, 1985; Rappaport, 1983; Tehranian & Waegelein, 1985). However, designing compensation systems that effectively align the interests of managers and stockholders requires a knowledge of the role and effect of relevant driving forces on compensation. Statistical research on executive compensation has been guided predominantly by a search for tangible, observable determinants (Ciscel & Carroll, 1980), examples of which have been firm size or growth rate (Baumol, 1967; Marris, 1963), inter‐firm and inter‐in‐dustry differences (Coughlan & Schmidt, 1985), and performance (Murphy, 1986). The emphasis on such tangible explanations is not surprising given the overwhelming use of econometric techniques, such as ordinary least squares regression (Ciscel & Carroll, 1980; Finkelstein & Hambrick, 1988), logistic regression (Walking & Long, 1984), time series analysis (Murphy, 1985), and event studies (Brickley, Bhagat & Lease, 1985; Coughlan & Schmidt, 1985; Tehranian & Waegelein, 1985). This paper argues that the focus on tangible, observable variables by compensation researchers is a methodologically ‐ driven practice that constrains theory building and testing. As a result, we may have ignored interesting and relevant theoretical frameworks for the study of executive compensation. We also have overlooked the use of analytical techniques that allow us to examine the role of potentially relevant latent constructs. In this paper, we will describe and illustrate the use of covariance structure modeling for the study of institutional pressures on executive compensation.

Details

Managerial Finance, vol. 21 no. 2
Type: Research Article
ISSN: 0307-4358

Article
Publication date: 18 December 2003

Audhesh K. Paswan

This study empirically explores one of the important channel issues – the relationship between various channel support given to channel partners and the perceived (by managers…

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Abstract

This study empirically explores one of the important channel issues – the relationship between various channel support given to channel partners and the perceived (by managers) goal‐orientation of a firm. Results from an emerging market, India, indicate that perceived orientation towards both profitability and market share is not associated with any of the channel support considered. Growth orientation however is strongly associated with most of the channel support activities – both business (e.g., business advice, pricing and ordering assistance, and personnel training) as well as marketing (advertising support, sales promotional material, and inventory management assistance) oriented activities. In contrast, perceived sales volume orientation is only associated with advertising support and business advice, however, the relationship is negative. These findings have interesting implications for channel management and channel motivation.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 15 no. 4
Type: Research Article
ISSN: 1355-5855

Keywords

Article
Publication date: 1 October 2000

Joanne Li and James S. Ang

Outlines the role of directors and previous research on their selection, reputation, relationship to firm performance and multiple directorships, noting criticism of those who sit…

Abstract

Outlines the role of directors and previous research on their selection, reputation, relationship to firm performance and multiple directorships, noting criticism of those who sit on many boards. Develops hypothese on the value directors provide through their time and expertise and tests them on a sample of 121 US firms being targeted for takeover 1989‐1993 to explore the link between pre‐offer and post‐offer firm performance and the number of directorships held by their directors. Presents the results, which suggest that directors with less time (i.e. more directorships) do not necessarily provide worse routine monitoring or lead to lower merger premiums. Recognizes some other factors affecting interpretation and calls for further research.

Details

Managerial Finance, vol. 26 no. 10
Type: Research Article
ISSN: 0307-4358

Keywords

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