Research issues in vision and control

Author(s):  
Gregory D. Hager ◽  
David J. Kriegman ◽  
A. Stephen Morse
Keyword(s):  
2000 ◽  
Author(s):  
H. S. Tzou ◽  
J. H. Ding

Abstract Modeling distributed parameter systems (DPS) by electronic circuits and fabricating the complicated equivalent circuits to evaluate the system characteristics always poses many challenging research issues for years. Modeling and analysis of distributed sensing/control of smart structures and distributed structronic systems are even scarce. This paper is to present a technique to model distributed structronic systems with electronic circuits and to evaluate control behaviors with the fabricated equivalent circuits. Electrical analogies and analysis of distributed structronic systems is proposed and dynamics and control of beam/sensor/actuator systems are investigated. To determine the equivalent circuits and system parameters, higher order partial derivatives are simplified using the finite difference method; partial differential equations (PDE) are transformed to finite difference equations and further represented by electronic components and circuits. To provide better signal management and stability, active electronic circuit systems are designed and fabricated. Electric signals from the distributed system circuits (i.e., soft and hard) are compared with results obtained by classical theoretical and other (e.g., the finite element, and experimental) techniques.


1988 ◽  
Vol 3 (1) ◽  
pp. 65-79 ◽  
Author(s):  
Daniel J. Sonkin

Since 1977, treatment and education programs for men who are assaultive toward spouses have proliferated across the country. Due to the great risk these men have posed to family members, many of the early intervention strategies were based on clinical intuition, clinical style, and personal understanding of the causes of family violence rather than on research data. These approaches to treatment have fallen into three camps: (1) a cognitive understanding of sexism, power, and control in intimate relationships; (2) behavioral anger management; and (3) family systems. Although service providers argue that their particular approach is the most effective, there is no data that indicate that any one form of treatment is more successful than others. As more empirical data are made available to service providers, treatment interventions can be appropriately modified. A greater dialogue between service providers, social policy makers, and academics is necessary to bridge the gaps in understanding the psychology of men who are assaultive toward intimates. Specific recommendations are made that may lead us to a better understanding of the etiology of spouse abuse as well as to the formulation of more effective intervention and prevention strategies.


Author(s):  
Dick Whiddett ◽  
Inga Hunter ◽  
Phoebe Elers ◽  
Caroline A. Lockhart ◽  
Hans W. Guesgen ◽  
...  

There is increasing interest in using emerging technologies, such as social media, digital devices, and smart home technologies, to distribute information throughout an older person's formal and informal support networks to assist them to live independently in their own home (to age in place). An open research workshop was conducted as part of a health informatics conference, 24 self-selected participants were organised into sub-groups to discuss four generic questions relating to the collection and distribution of an older person's health information. Thematic analysis of the discussions identified three major themes relating to roles and responsibilities of stakeholders, information collection and interpretation, system management and control. The findings emphasise the importance of taking a socio-technical perspective to understand the requirements of all stakeholder groups. A number of new and emerging research issues are identified, particularly in relating to the long-term management and adaptation of personal support networks and technologies.


2002 ◽  
Author(s):  
Carl W. Lickteig ◽  
William R. Sanders ◽  
Scott B. Shadrick ◽  
James W. Lussier ◽  
Brian J. Holt

1998 ◽  
Vol 17 (3) ◽  
pp. 270-284 ◽  
Author(s):  
Stephen Silverman ◽  
Melinda Solmon

This paper addresses the appropriate unit of analysis in field research. We first discuss the issues related to this topic: (a) unit of measurement versus unit of analysis, (b) treatments and random assignment, (c) independence of observations, (d) moderating and control variables, and (e) correlational versus experimental research. We then present a model for determining the correct unit of analysis. In many instances, researchers should use class means or subgroup means, and this has implications for research design. In the third section, we discuss the related issues of (a) the burden of proof, (b) asking the right questions and getting the right answers, and (c) completing statistical analyses. How data are analyzed can affect the results, and researchers should consider these issues when planning their research.


Author(s):  
Richard Bates ◽  
Emiliano Castellina ◽  
Fulvio Corno ◽  
Petr Novák ◽  
Olga Štepánková

This chapter reviews the challenges and requirements in taking gaze-based interaction beyond communication and control, such as environmental control and mobility by gaze. The chapter is divided into two sections: the first section is devoted to environment control and the second to mobility control. Each section starts by introducing its necessary underlying notions and definitions and proceeds by explaining the main arguments for the development of environmental and mobility control and examining the general problems with these areas and of those domain-specific problems related to gaze control. While special attention is devoted to standardization when environment control is at issue, user safety is the priority in mobility control. A brief review of existing commercial or advanced research solutions offered for domotic and mobility control is given for both sections, as is a review of current open research issues. Finally, some promising academic prototypes are described, along with the ways in which their developers are trying to solve some of the problems identified.


Author(s):  
Georg Hägele ◽  
Dirk Söffker

Autonomous and semi-autonomous aerial systems (AES) are often needed to perform tasks in complex and dynamic environments, especially in search and rescue applications. The safe navigation assurance as well as safety assurance of AES are open research issues. This paper investigates modeling of fall-back layer for AES assurance. To realize given advanced requirement the System Safety Surveillance and Control (SSSC) system concept is introduced. To fulfill safety requirements also for software developments formal requirements are formulated, to be realized with the formal modeling technique Strictly Formalized Situation-Operator-Modeling (sf-SOM). Fall-back system integration into AES can achieve system safety by separated safety consideration and emergency behavior integration and realization. Universally concept design permits the fall-back layer realization also for other applications. This in turn allows the first proof of concept of sf-SOM based SSSC system for fall-back layer realization using an experimental example. Here a Three-tank system is used to show the successful fall-back layer realization and the concept transferability to the introduced AES example.


1999 ◽  
Vol 8 (1) ◽  
pp. 104-111 ◽  
Author(s):  
Arvin Agah ◽  
Kazuo Tanie

It is not always feasible or practical to be present at a location of interest. Telepresence makes such possible. This paper presents the design and implementation of a telepresence system in which a mobile manipulator robot is utilized to explore a museum at a remote site, sending live video and audio on demand to a user at the local site. The user's sense of presence is also enhanced through the capability to manipulate objects remotely via the robot's gripper. The display system is a slightly modified, off-the-shelf mediascope, a television display system that can be worn like a pair of glasses. The head movements of the user are monitored using color tracking, and the displayed images are updated according to the motions of the head. This is achieved by interpreting the human head movements and transforming them into control signals for appropriate movements of the robot and its mounted color camera. Novel features of the presented system include utilization of human implicit commands, availability and cost-effectiveness of the system, feeling of presence, and intelligence fusion of the human user (where to go and what to do) with the robot's intelligence (local obstacle avoidance and navigation). The multimedia interface and control of the system are described in detail. Additionally, a number of research issues that require further investigation in order to realize attainable, high fidelity telepresence systems are discussed in this paper.


Author(s):  
Brenda M. Wenzel ◽  
Richard E. Christ

Operating environments have been undergoing unique changes that are causing management to reexamine factors that impact organization design. In attempting to respond to this design challenge, it became clear that there is a need for high quality empirical research directed at the organizational concept of span of control (SOC). The concept of SOC refers to the number of subordinates that one leader can effectively command and control. The purpose of this research paper is to summarize the outcome of a comprehensive analysis of the literature relevant to SOC and to discuss research issues on this topic. Six interrelated factors emerged from the literature review as important in determining a leader's proper SOC. The critical factors are tradition, environmental uncertainty, level of technology, subordinate's task characteristics, leadership behavior, and leader's workload. A research program is being developed to investigate these six factors with the goal of establishing a theoretical groundwork for the concept of SOC. Additionally, democratization as a design principle is introduced as an innovative approach to organization design.


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