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Human System Interactions (HSI), 2012 5th International Conference on

Date 6-8 June 2012

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Displaying Results 1 - 25 of 40
  • [Front cover]

    Publication Year: 2012 , Page(s): C4
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  • [Title page i]

    Publication Year: 2012 , Page(s): i
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  • [Title page iii]

    Publication Year: 2012 , Page(s): iii
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  • [Copyright notice]

    Publication Year: 2012 , Page(s): iv
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  • Table of contents

    Publication Year: 2012 , Page(s): v - vii
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  • Message from the Conference General Chairs

    Publication Year: 2012 , Page(s): viii
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  • Message from Conference Program Chairs

    Publication Year: 2012 , Page(s): ix
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  • Sponsors

    Publication Year: 2012 , Page(s): x
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  • Organizing Committee

    Publication Year: 2012 , Page(s): xi - xii
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  • An Approach to University Social Responsibility Ontology Development through Text Analyses

    Publication Year: 2012 , Page(s): 1 - 7
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1052 KB) |  | HTML iconHTML  

    The main purpose of this paper is to propose a content analysis approach in order to develop an ontology of university social responsibility (USR). The proposed approach comprises four main phases in which two content analyses software have been utilized to extract the main USR components and to identify the domain of this concept. To achieve the goal, the existing body of knowledge of USR definitions and specifications - using a variety of terms - has been considered to identify the main notions of USR and their relationships. The developed ontology can be applied to define a formal, explicit description of the USR concept and to construct a more reliable basis for measurement purposes. View full abstract»

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  • Mobile Web Apps - The Non-programmer's Alternative to Native Applications

    Publication Year: 2012 , Page(s): 8 - 15
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1086 KB) |  | HTML iconHTML  

    As the capacity of the mobile web continues to increase with the introduction of new web technologies, a growing number of "non-programming" developers are looking to web-based mobile applications (or "web apps") as an alternative means of creating and deploying content, without the need for code-based programming experience. This paper demonstrates just some of the capabilities of a web-based application built using HTML5 and CSS3. Although this paper focuses on the development process for two web app prototypes built exclusively for the iPhone platform, theoretically, a web application can be presented on other mobile devices with browsers that support HTML5 and CSS3 technologies. It was found that these web apps were capable of producing a comparable standard of user experience as their native application equivalents. The use of the latest web technologies provides "non-programming" developers with a viable alternative for developing apps on mobile devices. View full abstract»

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  • SmilieFace: Evolving Interface Design

    Publication Year: 2012 , Page(s): 16 - 22
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1825 KB) |  | HTML iconHTML  

    Smiliemail is an existing web-based application that enhances online communication by enabling users to create and send affective, engaging messages. It uses a computer generated video avatar, which articulates a sender's message that has been tagged using an XML markup language. With the advent of smart phones, a new less complex screen by screen interface was required due to their reduced screen size and power. A new Smiliemail client could also cater for the mobile paradigm of "media-rich communication everywhere". Interaction between users on Social Network Sites (SNS), such as Facebook often use emotional or affective communication. However, plain text messages, even if tempered with appropriate smilie icons, often cause misunderstanding, leading to flame wars or similar. Hence the Smiliemail affective avatars may provide an effective inter-user communication on SNSs. This case-study discusses the user interface evolution from the existing web-based Smiliemail interface, through to a smart phone interface, and finally to the SmilieFace Facebook application "canvas" interface. This study also details some Facebook application user interface and implementation issues. View full abstract»

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  • Estimation of User's Internal State before the User's First Utterance Using Acoustic Features and Face Orientation

    Publication Year: 2012 , Page(s): 23 - 28
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (402 KB) |  | HTML iconHTML  

    Introduction of user models (e.g. models of a user's belief, skill and familiarity to the system) is believed to increase flexibility of response of a dialogue system. Conventionally, the internal state is estimated based on linguistic information of the previous utterance, but this approach cannot applied to the user who did not make an input utterance in the first place. Thus, we are developing a method to estimate an internal state of a spoken dialogue system's user before his/her input utterance. In a previous report, we used three acoustic features and a visual feature based on manual labels. In this paper, we introduced new features for the estimation: length of filled pause and face orientation angles. Then, we examined effectiveness of the proposed features by experiments. As a result, we obtained a three-class discrimination accuracy of 85.6% in an open test, which was 1.5 point higher than the result obtained using the previous feature set. View full abstract»

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  • Effect of Robot Height on Comfortableness of Spoken Dialog

    Publication Year: 2012 , Page(s): 29 - 34
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (920 KB) |  | HTML iconHTML  

    We investigated the effect of height of a robot on comfortableness of spoken dialog with the robot. We created a robot that could change the height continuously, and carried out dialog experiment with 18 subjects changing the robot's height. From the experimental result revealed the two observations: the "comfortable height" of a robot was lower than the eye height of a subject, and the comfortableness of dialog reduced when the height of the robot changed by 200 mm from the comfortable height. View full abstract»

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  • Opportunities for Enhanced Robot Control along the Adjustable Autonomy Scale

    Publication Year: 2012 , Page(s): 35 - 42
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1377 KB) |  | HTML iconHTML  

    As we move along the scale of adjustable autonomy for the control of robots from direct teleoperation at one extreme to full automation at the other, several opportunities for improvement in control quality, user feedback and machine learning suggest themselves. We describe three experiments, in telerobotics, the provision of situational awareness, and the acquisition of knowledge for automation from the human operator, and explain our concept of explicit, assigned responsibility as an organising principle for flexible work-sharing between humans and robots. A novel design for an interface based on this principle is outlined. View full abstract»

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  • Evaluation of Spatiotemporal Detectors and Descriptors for Facial Expression Recognition

    Publication Year: 2012 , Page(s): 43 - 47
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (347 KB) |  | HTML iconHTML  

    Local spatiotemporal detectors and descriptors have recently become very popular for video analysis in many applications. They do not require any preprocessing steps and are invariant to spatial and temporal scales. Despite their computational simplicity, they have not been evaluated and tested for video analysis of facial data. This paper considers two space-time detectors and four descriptors and uses bag of features framework for human facial expression recognition on BU_4DFE data set. A comparison of local spatiotemporal features with other non-spatiotemporal published techniques on the same data set is also given. Unlike spatiotemporal features, these techniques involve time consuming and computationally intensive preprocessing steps like manual initialization and tracking of facial points. Our results show that despite being totally automatic and not requiring any user intervention, local spacetime features provide promising and comparable performance for facial expression recognition on BU_4DFE data set. View full abstract»

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  • Mathspeak: An Audio Method for Presenting Mathematical Formulae to Blind Students

    Publication Year: 2012 , Page(s): 48 - 52
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (368 KB) |  | HTML iconHTML  

    This paper describes the problems involved with learning and understanding math for vision impaired students and developing a computer system approach for rendering mathematical formulae into audio form. Access to mathematics is an obstacle for blind students. The lack of easy access to mathematical resources is a barrier to higher education for many blind students and puts them at an unfair disadvantage in school, academia, and industry [1]. Results from the National Assessment of Educational Progress show that there is great disparity between the math skills of students with disabilities and students without disabilities [2]. A methodology for rendering technical documents, in particular, complex mathematical formula, in an audio descriptive form (Mathspeak) is presented in this paper. View full abstract»

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  • Use of Three Dimensional Imaging to Perform Aircraft Composite Inspection: Proof of Concept

    Publication Year: 2012 , Page(s): 53 - 58
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (721 KB) |  | HTML iconHTML  

    The Boeing Commercial Aircraft Company's 787 is the first commercial airliner with a large number of its structural components made of composite material. The Airbus A350 will follow by 2013. Composite material has been incorporated in airliners for many years. Composites have great advantages as a material of construction for aircraft. It has a high strength to weight ratio and the resulting aircraft weighs significantly less, producing a fuel savings. Composite materials have been associated with aircraft accidents as well. For instance, in the accident involving American Airlines Flight 587 the tail fin of an Airbus A300-605R came off the aircraft after takeoff from JFK Airport. Visual inspection is the primary means of detecting composite damage. However, in remote locations in the world where commercial airliners fly there might not be trained inspectors who can adequately inspect composite structure for damage. In this paper we discuss how we used LIDAR scans of a composite test article projected in a three (3) dimensional, immersive environment to determine whether we could see surface damage. Our proof of concept experiment showed that we could see all the damage we had inflicted on the part, along with some of the existing damage on the test article. The combination of the two technologies, LIDAR and three (3) dimensional, immersive environments, have great promise in providing means to visually inspect composite materials under a variety of conditions. View full abstract»

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  • Haptic Devices as Objective Measures for Motor Skill

    Publication Year: 2012 , Page(s): 59 - 66
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1640 KB) |  | HTML iconHTML  

    We have developed engaging virtual environments using haptic technology for the purpose of both understanding functional activity and restoring functionality to disabled individuals. To assess our virtual environments, we used 21 able-bodied subjects and examined their motor performance by comparing several metrics captured by the simulations to the completion time. We discovered that individuals were highly engaged during our simulation, and the motor performance across subjects improved with each repeated trial. We showed how to use motor performance metrics that can be captured by the device can accurately predict completion time. We also developed several metrics for estimating object interaction difficulty. View full abstract»

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  • Robust Stability and Performance Analysis of the Control Systems with Higher Order Disturbance Observer: Frequency Approach

    Publication Year: 2012 , Page(s): 67 - 74
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1983 KB) |  | HTML iconHTML  

    The Disturbance Observer (DOB) is widely used in many robust control applications such as robotics and industrial automation due to its simplicity and efficiency. The DOB estimates and compensates the system disturbances by using an inner-feedback loop in the range of its bandwidth. It includes the inverse of the nominal system model and a low pass filter (LPF) which determines the bandwidth of the DOB. The dynamic characteristic and bandwidth of the LPF directly affect the robust stability and performance of the system. The dynamic characteristic of the LPF can be adjusted by using Higher Order Disturbance Observers (HODOB). The bandwidth of the DOB is demanded to be as high as possible to suppress the system disturbances in a wide frequency range. However, it is bounded by the noise and robustness of the system. The conventional robustness analysis method which is based on the Small Gain theorem and unstructured uncertainties, unnecessarily limits the bandwidth of the DOB due to conservatism. The conservatism can be decreased by using the structured uncertainty based robustness analysis methods. In this paper, the robust stability and performance of the system with DOB/HODOB is analyzed by using the conventional analysis method and Singular Structured Values (SSV) that is based on the structured uncertainties. The pros and cons of these methods are shown. A general second order system model is analyzed and simulation results are given to show the validity of the proposed methods. View full abstract»

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  • A Depressurization Motion Assistance for a Seated Wheelchair User Using Pressure Distribution Estimation

    Publication Year: 2012 , Page(s): 75 - 80
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1842 KB) |  | HTML iconHTML  

    For reducing the risk of pressure sore caused by long period sitting on a wheelchair, we have developed a depressurization motion assistance system which is low cost and suitable for practical use. Our developing system consists of a seating cushion which the patient sits on and four air cells which can lift or incline the seating cushion. Each air cell is actuated by small air compressor, which can drive using batteries on the wheelchair respectively, and each compressor has a pressure sensor on its body. In this paper, we develop the depressurization assistance control scheme based on the pressure distribution estimation. For realizing the pressure distribution estimation during the depressurization motion, we analyze the hip depressurization operation by the nursing specialists and from analytical results, our system uses the center of pressure as an index value. Using the estimated results, our system controls the inclination of its seating cushion for increasing the depressurization performance. With our proposed system, the patient can depressurize on his sacral part without special operation. The performance of our system is verified by experiments using our prototype. View full abstract»

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  • Geographic Visualization of Risk as Decision Support in Emergency Situations

    Publication Year: 2012 , Page(s): 81 - 88
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (10954 KB) |  | HTML iconHTML  

    We investigate how geographic visualization can be used as a means to facilitate understanding of risk in emergency situations. Specifically, we identify the need of decision makers regarding access to risk information; introduce a visualization solution that aims to satisfy these needs; and evaluate this solution in terms of its ability to generate insight. A description of how the solution can be implemented is included. Our findings indicate that geographic visualization is an effective means for facilitating understanding of risk in emergency situations, but that the effectiveness of the concept depends on the visualization design. A set of guidelines towards risk visualization design is proposed. View full abstract»

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  • Mining Bug Databases for Unidentified Software Vulnerabilities

    Publication Year: 2012 , Page(s): 89 - 96
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (883 KB) |  | HTML iconHTML  

    Identifying software vulnerabilities is becoming more important as critical and sensitive systems increasingly rely on complex software systems. It has been suggested in previous work that some bugs are only identified as vulnerabilities long after the bug has been made public. These vulnerabilities are known as hidden impact vulnerabilities. This paper discusses existing bug data mining classifiers and present an analysis of vulnerability databases showing the necessity to mine common publicly available bug databases for hidden impact vulnerabilities. We present a vulnerability analysis from January 2006 to April 2011 for two well known software packages: Linux kernel and MySQL. We show that 32% (Linux) and 62% (MySQL) of vulnerabilities discovered in this time period were hidden impact vulnerabilities. We also show that the percentage of hidden impact vulnerabilities has increased from 25% to 36% in Linux and from 59% to 65% in MySQL in the last two years. We then propose a hidden impact vulnerability identification methodology based on text mining classifier for bug databases. Finally, we discuss potential challenges faced by a development team when using such a classifier. View full abstract»

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  • Adding Medical Functionalities to a Remote Controller

    Publication Year: 2012 , Page(s): 97 - 104
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (654 KB) |  | HTML iconHTML  

    An example of an infra-red remote control device is presented in this paper. The device is equipped with additional medical diagnostic features for physiological and mental training. It is primarily a diagnostic health-care unit to support the elderly. To improve the acceptance of the device, the additional features are hidden in the shape of an ordinary, well-known device. View full abstract»

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  • Study on Standard Human Motion Based on Phase Plane for Non-Holonomic Vehicle Interface

    Publication Year: 2012 , Page(s): 105 - 109
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1563 KB) |  | HTML iconHTML  

    Since the structure and D.O.F. of human and machine are different, the motion of human and machine is essentially different. This study defines "Pseudo Human Motion" as approximated machine's motions referring to the standard human motion. If the pseudo human motion is realized, the operation of complex machine becomes easy, because the motion of complex machine becomes human-like motion. In order to realize pseudo human motion, we derive the standard human motion which is to be a model for the machine's motion. For this purpose, we measured the human motions of plural subjects by using motion capture system. The human motion is different in each subject about the motion time, therefore it is difficult to directly use measured human motion as a standard human motion. We adopts following solutions for this problem. The fundamental components of each subject are extracted from measured human motion data by using DFT(Discrete Fourier Transform). And the fundamental components are plotted on the phase plane. There are no big differences among the human motion of each subject on the phase plane. Thus we do ellipse fitting to the each subject motion on the phase plane, and we call it the standard human motion. This ellipse trajectory, which is standard human motion, can evaluate motions even if different motion in time domain, and can absorb different motion cycle and amplitude caused by individual physical characteristics and peculiarities. View full abstract»

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