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Recent Developments in Computer Applications in Mental Health: Discussion and Perspective

Hedlund, James L.; Gorodezky, Michael J.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 05/11/1980 EN
Relevância na Pesquisa
65.96%
This paper discusses and provides additional perspective to recent mental health computer applications in five major areas: computer modeling associated with treatment decisions and program planning, automated psychological testing and the integrity of data base information, management information systems for community mental health centers, computer diagnosis, and computer support for primary clinician decision making. Representative references are provided for each area.

A collaborative institutional model for integrating computer applications in the medical curriculum.

Friedman, C. P.; Oxford, G. S.; Juliano, E. L.
Fonte: American Medical Informatics Association Publicador: American Medical Informatics Association
Tipo: Artigo de Revista Científica
Publicado em //1991 EN
Relevância na Pesquisa
45.95%
The introduction and promotion of information technology in an established medical curriculum with existing academic and technical support structures poses a number of challenges. The UNC School of Medicine has developed the Taskforce on Educational Applications in Medicine (TEAM), to coordinate this effort. TEAM works as a confederation of existing research and support units with interests in computers and education, along with a core of interested faculty with curricular responsibilities. Constituent units of the TEAM confederation include the medical center library, medical television studios, basic science teaching laboratories, educational development office, microcomputer and network support groups, academic affairs administration, and a subset of course directors and teaching faculty. Among our efforts have been the establishment of (1) a mini-grant program to support faculty initiated development and implementation of computer applications in the curriculum, (2) a symposium series with visiting speakers to acquaint faculty with current developments in medical informatics and related curricular efforts at other institution, (3) 20 computer workstations located in the multipurpose teaching labs where first and second year students do much of their academic work...

Towards the Implementation of Successful Medical Computer Applications

Sobolewski, J. S.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 05/10/1977 EN
Relevância na Pesquisa
45.94%
As the price/performance ratio of computers keeps going down, their use is becoming feasible for more and more medical applications. An important factor contributing to the success of such applications is the care and time spent in the analysis, design, development, implementation and operation phases. Although much literature is available on the actual programming aspects such as structured programming or top-down design techniques for large computer applications, little is said about the human and other factors that should be taken into account to ensure an end product that not only functions correctly but is readily acceptable to those who must use it. The purpose of this paper, therefore, is to present some of the problems that are more frequently encountered in medical computer applications and to focus attention to those items that should be carefully considered as the application evolves from the analysis and design phases to the operational phase. Some suggestions of overcoming these problems are also presented.

Personal Computer Applications for Psychiatry and Psychology

Green, Rex S.; Gastfriend, David R.; Kolodner, Robert M.; Fowler, Raymond D.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 07/11/1984 EN
Relevância na Pesquisa
45.92%
Many different types of mental health computer applications are reviewed by this panel of experts. The availability of the applications software for personal computers is noted. An overview of the many application areas is followed by more specific comments covering psychopharmacology, psychiatry, and psychological testing. Rapid improvements in personal computer hardware are broadening the uses of these models. Most application programs can now be run on desk-top model equipment. Consequently, it is likely that future applications will be developed first for personal computers, then disseminated to other sizes of computers.

User Acceptance of Medical Computer Applications: A Diffusion Approach

Kaplan, Bonnie
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 02/11/1982 EN
Relevância na Pesquisa
46%
Increasing concern has been expressed over the slow rate of diffusion of medical computer applications. Although the history of medical computing provides examples of applications that have been slow to develop, it also contains applications that rapidly became part of standard medical practice. The differences in development and adoption of different medical computer applications can be partly explained in terms of a theoretical model, based on research in the diffusion of innovations, that emphasizes the importance of medical culture, practice, and social institutions. Attention to these factors can improve project and implementation design and management, and facilitate the adoption of medical computer applications.

Strategies for the promotion of Computer Applications in Radiology in healthcare delivery

Reiner, Bruce; Siegel, Eliot; Allman, Robert
Fonte: Springer-Verlag Publicador: Springer-Verlag
Tipo: Artigo de Revista Científica
Publicado em /08/1998 EN
Relevância na Pesquisa
45.95%
The objective of this paper is to identify current trends in the development and implementation of computer applications in today’s ever-changing healthcare environment. Marketing strategies are discussed with the goal of promoting computer applications in radiology as a means to advance future healthcare acceptance of technologic developments from the medical imaging field. With the rapid evolution of imaging and information technologies along with the transition to filmless imaging, radiologists must assume a proactive role in the development and application of these advancements. This expansion can be accomplished in a number of ways including Internet based educational programs, research partnerships, and professional membership in societies such as the Society of Computer Applications in Radiology (SCAR). Professional societies such as SCAR, in turn, should reach out to include other professionals from the healthcare community. These would include financial, administrative, and information systems, disciplines to promote these technologies in a cost conscious and value added manner.

Advanced filters and components for power applications

Neugebauer, Timothy Carl, 1975-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 163 p.; 8258168 bytes; 8278649 bytes; application/pdf; application/pdf
ENG
Relevância na Pesquisa
45.94%
The objective of this thesis is to improve the high frequency performance of components and filters by better compensating the parasitic effects of practical components. The main application for this improvement is in design of low pass filters for power electronics, although some other applications will be presented. In switching power supplies the input and output filters must attenuate frequencies related to the fundamental switching frequency of the converter. The filters represent a major contribution to the weight, volume and price of the power supply. Therefore, aspects of the design of the switching power converter, especially those related to the switching frequency, are limited by the high frequency performance of the filters. The usual methods of improving the high frequency performance of the filter includes using larger, better components. Filter performance can improve by using higher quality inductors and capacitors or by adding high frequency capacitors in parallel with the filter capacitor. Also, an additional filter stage can be added. All of these methods add significant cost to the design of the power supply. If the effect of high-frequency parasitic elements in the components can be reduced (at a low cost) the performance of the filter can be enhanced. This allows the development of filters with much better high frequency attenuation...

VISTA : a visualization tool for computer architects; Visualization tool for computer architects

Mihalik, Aaron D. (Aaron Daniel), 1980-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 55 leaves; 3599683 bytes; 3605553 bytes; application/pdf; application/pdf
EN_US
Relevância na Pesquisa
46.01%
As computer architectures continue to grow in complexity, software developers and hardware engineers cope with the increasing complexity by developing proprietary applications, simulations and tool sets to understand the behavior of these complex systems. Although the field of information visualization is leading to powerful applications in many areas, information visualization applications for computer architecture development are either tightly coupled with a specific architecture or target a wide range of computer system data. This thesis introduces the Visualization Tool for Computer Architects (VISTA) Environment. The VISTA Environment is an extensible and modular information visualization environment for hardware engineers, software developers and educators to visualize data from a variety of computer architecture simulations at different levels of abstraction. The VISTA Environment leverages common attributes in simulation data, computer architecture visualizations, and computer architecture development methods to create a powerful information visualization environment to aid in designing, understanding and communicating complex computer architectures.; by Aaron D. Mihalik.; Thesis (M. Eng.)--Massachusetts Institute of Technology...

A semantic checkpoint framework for enabling runtime-reconfigurable applications; semantic checkpoint framework for runtime-reconfigurable applications

Chan, Steven, 1980-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 82 p.; 4306065 bytes; 4314818 bytes; application/pdf; application/pdf
EN_US
Relevância na Pesquisa
45.97%
This thesis proposes to enable runtime-reconfigurable applications through the use of semantic checkpointing. We view applications here as a collection of inter-connected components, and reconfigurations as the reconstitution of components that make up an application. By checkpointing only values that are deemed to be of semantic significance, application state is maintained across reconfigurations even if the two configurations have completely different implementations. Such an ability is especially useful for mobile applications where the resources available may change frequently, and reconfigurations are desirable for making optimal use of these resources as they come and go. Here we present a semantic checkpointing framework for use by developers to easily write adaptive applications that maintain state within a general-purpose checkpointed execution environment. A prototype implementation was built using these framework recommendations and served to demonstrate the feasibility of using semantic checkpointing as a means for enabling runtime-reconfigurable applications.; by Steven Chan.; Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.; Includes bibliographical references (p. 81-82).

Applying the repeated game framework to multiparty networked applications

Afergan, Michael Moïse
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 154 p.; 10270949 bytes; 10277410 bytes; application/pdf; application/pdf
ENG
Relevância na Pesquisa
45.97%
This thesis presents repeated game analysis as an important and practical tool for networked application and protocol designers. Incentives are a potential concern for a large number of networked applications. Well-studied examples include routing and peer-to-peer networks. To the extent that incentives significantly impact the outcome of a system, system designers require tools and frameworks to better understand how their design decisions impact these incentive concerns. Repetition is a prevalent and critical aspect of many networking applications and protocols. Most networked protocols and architectures seek to optimize performance over a longer timescale and many have explicit support for repetition. Similarly, most players in networked applications are interested in longer horizons, whether they be firms building a business or typical individuals trying to use a system. Fortunately, the study of repeated interaction between multiple self-interested parties, repeated games, is a well-understood and developed area of economic and game theoretic research. A key conclusion from that literature is that the outcome of the repeated game can differ qualitatively from that of the one-shot game. Nonetheless, the tools of repeated games have rarely if ever been brought to bear on networking problems. Our work presents the descriptive and prescriptive power of repeated game analysis by making specific contributions to several relevant networking problems.; (cont.) The applications considered are inherently repeated in practice...

General linear cameras : theory and applications; GLC : theory and applications

Yu, Jingyi, 1978-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 149 leaves
ENG
Relevância na Pesquisa
45.94%
I present a General Linear Camera (GLC) model that unifies many previous camera models into a single representation. The GLC model describes all perspective (pinhole), orthographic, and many multiperspective (including pushbroom and two-slit) cameras, as well as epipolar plane images. It also includes three new and previously unexplored multiperspective linear cameras. The GLC model is general and linear in the sense that, given any vector space where rays are represented as points, it describes all 2D affine subspaces (planes) formed by the affine combination of 3 rays. I also present theories of projection and collineation for GLCs and use these theories to explain various multiperspective distortions. Given an arbitrary multiperspective imaging system that captures smoothly varying set of rays, I show how to map the rays onto a 2D ray manifold embedded into a 4D linear vector space. The GLC model can then be use to analyze the tangent planes on this manifold. Geometric structures associated with the local GLC model of each tangent plane provide an intuitive physical interpretation of the imaging system, and they are closely related to the caustics of reflected rays. These geometric structures are characteristic of only 4 of the 8 GLC types. I also prove that the local GLC type at each tangent plane is invariant to the choice of parametrization...

Proactive mobile wireless networks : an infrastructureless wireless network architecture for delay-sensitive applications; Infrastructureless wireless network architecture for delay-sensitive applications

Dai, Lillian Lei, 1978-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 213 p.
ENG
Relevância na Pesquisa
45.94%
Infrastructureless wireless networks are an important class of wireless networks that is best suited for scenarios where there is temporary and localized telecommunication demand. Such networks consist of wireless devices that can form a network autonomously without the need for pre-deployed telecommunication infrastructures such as base-stations and access points. Over the past several decades, significant research and development efforts have been devoted to a particular type of infrastructureless wireless networks called mobile ad hoc wireless networks (MANETs). In addition to autonomous network formation, wireless devices in MANETs have routing capabilities and help one another to forward information in a multihop fashion. The applications envisioned for MANETs include communication during disaster relief, search and rescue, and small tactical unit operations where the existing telecommunication infrastructures may be destroyed or are unavailable. While significant strides have been made in all aspects of MANET networking, adoption of such technology has been limited to date despite its potential. We believe that this lack of adoption is due to a fundamental mismatch between application demands and the MANET network architecture. While the flexibility of anytime and anywhere communication offered by MANETs is appealing...

Efficient object recognition and image retrieval for large-scale applications

Lee, John Jaesung
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 93 p.
ENG
Relevância na Pesquisa
45.95%
Algorithms for recognition and retrieval tasks generally call for both speed and accuracy. When scaling up to very large applications, however, we encounter additional significant requirements: adaptability and scalability. In many real-world systems, large numbers of images are constantly added to the database, requiring the algorithm to quickly tune itself to recent trends so it can serve queries more effectively. Moreover, the systems need to be able to meet the demands of simultaneous queries from many users. In this thesis, I describe two new algorithms intended to meet these requirements and give an extensive experimental evaluation for both. The first algorithm constructs an adaptive vocabulary forest, which is an efficient image-database model that grows and shrinks as needed while adapting its structure to tune itself to recent trends. The second algorithm is a method for efficiently performing classification tasks by comparing query images to only a fixed number of training examples, regardless of the size of the image database. These two methods can be combined to create a fast, adaptable, and scalable vision system suitable for large-scale applications. I also introduce LIBPMK, a fast implementation of common computer vision processing pipelines such as that of the pyramid match kernel. This implementation was used to build several successful interactive applications as well as batch experiments for research settings. This implementation...

A Flexible Brain-Computer Interface

Bayliss, Jessica D. ; Ballard, Dana H.
Fonte: University of Rochester. Computer Science Department. Publicador: University of Rochester. Computer Science Department.
Tipo: Tese de Doutorado
ENG
Relevância na Pesquisa
45.93%
Thesis (Ph. D.)--University of Rochester. Dept. of Computer Science, 2001. Simultaneously published in the Technical Report series.; Recent advances in computer hardware and signal processing have made it feasible to use human EEG signals or "brain waves" to communicate with a computer. Locked-in patients now have a means to communicate with the outside world. Even with modern advances, such systems still suffer from communication rates on the order of 2-3 items/minute. In addition, existing systems are not likely to be designed with flexibility in mind, leading to slow systems that are difficult to improve. This dissertation presents a flexible brain-computer interface that is designed to facilitate changes in signal processing methods and user applications. In order to show the flexibility of the system, several applications, ranging from a brain-body actuated video game played with eye movements to a brain-computer interface for environmental control in a virtual apartment, are shown. The P3 evoked potential is a positive wave in the EEG signal peaking at around 300 milliseconds after task-relevant stimuli and it can be used as a binary control signal. A virtual driving experiment shows that the P3 can be reliably detected within a virtual environment. Several on-line algorithms for processing single trial P3 evoked potentials are presented and compared. It is important that actual EEG signals rather than signal artifacts are being recognized and thus false recognition of artifacts is shown to be small. Results from an environmental control application within a virtual apartment are presented. Subjects do not perform significantly different between controlling the application from a computer monitor and when fully immersed in the virtual apartment and subjects like the immersive VR environment better. This highlights the fact that the P3 component of the evoked potential is robust over different environments and that usability does not depend solely on performance...

Mathcad Computer Applications Predicting Antenna Parameters from Antenna Physical Dimensions and Ground Characteristics

Gerry, Donald D.; Robertson, R. Clark
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
EN_US
Relevância na Pesquisa
55.92%
Approved for public release; distribution is unlimited.; This report provides the documentation for a set of computer applications for the evaluation of antenna parameters. The applications are written for the Mathcad personal computer software for various antenna types listed in the thesis index. Antenna dimensions and, in some cases, ground parameters are the only required inputs for each application. No new antenna parameter equations were developed as a part of this research. The chapters of this thesis are intended to provide Mathcad antenna application users with the background information necessary to readily use and interpret the software for each antenna type. Appendices are provided with examples of each antenna application. Each application has an introductory paragraph and a table of required inputs. The Mathcad software provides various numerical outputs and performance predictions. as well as a graphical representation of radiation patterns in the far-field. Mathcad application results are consistent with the predictions of applicable publications, as well as other antenna numerical analysis programs.

Mathcad computer applications predicting antenna parameters from antenna physical dimensions and ground characteristics

Gerry, Donald D.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.92%
Approved for public release; distribution is unlimited.; This report provides the documentation for a set of computer applications for the evaluation of antenna parameters. The applications are written for the Mathcad personal computer software for various antenna types listed in the thesis index. Antenna dimen

Using software applications to facilitate and enhance strategic planning

Carpenter, Daniel K.; Ebner, Donald J.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: 98 p.
EN_US
Relevância na Pesquisa
45.95%
Approved for public release; distribution is unlimited.; This thesis is an evaluation of current computer software applications and their use in strategic planning. Military and business strategy are reviewed and discussed and the premise for sharing ideas between communities is proposed. The concepts of cognitive mapping and analytic hierarchy process, while not recent developments, will still be new to many readers of this thesis. A discussion of the strengths, weaknesses and capabilities of each approach is presented. Each of these approaches is also used as the basis for the two computer software applications which are discussed and evaluated in the thesis. Cognitive mapping, with its concepts linked by relationships to form a network map, is used by Graphics COPE to structure the problem being considered by a planning group. The Analytic Hierarchy Process, using multi-variable criteria, is capable of 'what if' analysis and goal seeking to choose among alternatives during a planning process. The planning process, and where these two fit into it, will be discussed step by step. Rationale for considering using this process will be discussed, as will the reasons for using computers in support of military strategic planning. And, advice will be given to those military analysts and planners who feel the need to search for computer applications to help them do their job.; Major...

Designing customizable end user applications using semantic technologies to improve information management

Watugala, Sumudu Weerakoon
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 155 leaves
ENG
Relevância na Pesquisa
55.92%
Personalization capabilities in computer applications attempt to better meet the needs of individuals. The more traditional and widespread paradigm in application design is that the user should adapt to the available application. This requires that the individual user's task be sliced and molded to fit the dimensions offered by an inflexible, monolithic application. It is desirable to have an application that can be shaped to fit each individual user's dynamic needs. However, it is important that this is done in an intuitive and unobtrusive way. In this thesis, we design and evaluate a personalizable application developed to aid life science researchers in their work. We designed the application in Haystack, a platform for developing semantic applications and user interfaces. The application gave the user flexibility in personalizing the way in which information is organized and displayed, while giving users access to the tools necessary to perform their tasks. We selected researchers as the user group to focus on because of the inherent necessity in their work for originality and dynamic adaptation. Life sciences research was chosen as the domain due to its potential to benefit from the application of semantic technologies. We tested how users reacted and adapted to this application by conducting a formal user study.; by Sumudu Weerakoon Watugala.; Thesis (M. Eng.)--Massachusetts Institute of Technology...

Technology Changes and VA Mental Health Computer Applications

Gottfredson, Douglas; Finkelstein, Allan; Christensen, Phillip; Weaver, Richard; Sells, Jeffery; Miller, David; Anderson, Ronald
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em //1993 EN
Relevância na Pesquisa
45.95%
Since 1972, the Department of Veterans Affairs has had mental health computer applications for clinicians, managers, and researchers, operating on main frame and mini computers. The advent of personal computers has provided the opportunity to further enhance mental health automation. With Congressional support, VA's Mental Health and Behavioral Sciences Service placed micro computers in 168 VA Medical Centers and developed additional mental health applications. Using wide area networking procedures, a National Mental Health Database System (NMHDS) was established. In addition, a Computer-assisted Assessment, Psychotherapy, Education, and Research system (CAPER), a Treatment Planner, a Suicide and Assaultive Behavior Monitoring system, and a national registry of VA mental health treatment resources were developed. Each of these computer applications is demonstrated and discussed.

The Effects of Physicians' Computer Applications on Health Insurance Claims and Reimbursements

Selby, Dayton W.; Federico, Robert J.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em 17/10/1979 EN
Relevância na Pesquisa
55.83%
Physicians, hospitals and other health care providers are increasingly turning to the utilization of computers for a multitude of functions, not least of which is for the preparation of health insurance claims data. Economies found in computer applications for both providers and Blue Cross and Blue Shield Plans are moving us quickly into the anticipated age of “paperless” claims. Though there are certain problems to yet be resolved, the mutual interest of reducing paper and simplifying data collection and processing is leading us toward that mutual goal.