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At least 217 records · Page 12Linked to original sources
PubMed1992

A Macintosh computer system for collecting and analyzing rodent sexual behavior.

We present a Macintosh-based computer system for collection and analysis of rodent sexual behavior. Two computer programs are presented. The first is an entirely generalizable real time data collection program that records any keyboard or keypad inputs (e.g., user defined behavior codes) and their time of occurrence. The second is somewhat generalizable; we use it to analyze frequencies, durations, and latencies relative to a copulatory series (including mounts, intromissions, and ejaculations). To our knowledge, these are the first such programs available on the Macintosh platform.

Animals↗
PubMedDate not supplied

Introducing a downsized, open computer system with asynchronous transfer mode in PACS and its effect on image data transfer.

To assess the effectiveness of the introduction of a downsized, open computer system and asynchronous transfer mode (ATM) as a network in a medium-sized picture archiving and communication system (PACS), we conducted experiments on image data transmission. The speed of image transfer, including registration in the computers in the new PACS, was four to eleven times faster than that in our first PACS. However, the introduction of ATM did not contribute significantly to the improvement of speed of image transfer because of the use of Ethernet branches between the gateway and display workstation computers. A star architecture without Ethernet branches may be suitable for PACS using an ATM network.

Computer Communication Networks↗
PubMed1992

Computer system for assisting with clinical interpretation of tumour marker data.

OBJECTIVE: To design and evaluate a computer advisory system for the treatment of gestational trophoblastic tumour. DESIGN: A comparison of clinicians' treatment decisions with those of the computer system. Two datasets were used: one to calibrate the system and one to independently evaluate it. SETTING: Department of medical oncology. PATIENTS: Computerised records of 290 patients with low risk gestational trophoblastic tumour for whom the advisory system could predict the adequacy of treatment. The calibration set comprised patients admitted during 1979-86(227) and the test set patients during 1986-89(63). MAIN OUTCOME MEASURES: The system's accuracy in predicting need to change treatment compared with clinicians' actions. The mean time faster that the system was in predicting the need to change treatment. RESULTS: On the calibration dataset the system was 94% (164/174) accurate in predicting patients whose treatment was adequate, recommending change when none occurred in only 10 (6%) patients. In patients whose treatment was changed the system recommended change earlier than clinicians in 39/53 cases (74%), with a mean time advantage of 14.9 (SE 2.02) days. On the test dataset the system had an accuracy of 91% (31/34) in predicting treatment adequacy and a false positive rate of 9% (3/34). The system recommended change earlier than clinicians in 22/29 cases (76%), with a mean time advantage of 12.5 (2.22) days. CONCLUSIONS: The computer advisory system could improve patient management by reducing the time spent receiving ineffective treatment. This has implications for both patient time and clinical costs.

Biomarkers, Tumor↗
PubMedDate not supplied

[Optimization of radiation protection in the agrosphere: methods of optimization and computer systems for decision support with respect to management of protective measures].

Principles and methods of radiation protection optimisation for countermeasure implementation on areas subjected to radioactive contamination are discussed. Methodological aspects of the protective measures analysis in agrosphere are presented. Methods of estimation of intervention levels, examples of assessment and comparison of countermeasure effectiveness with the use of various criteria are considered. The brief review of up-to-date decision support systems is submitted along with the description of computer system PRANA DSS for estimation of the consequences and countermeasures management in agrosphere in the long-term period of liquidating the consequences of a nuclear accident.

Agriculture↗
PubMed1977

A computer system for processing data from routine pulmonary function tests.

In larger pulmonary function laboratories there is a need for computerised techniques of data processing. A flexible computer system, which is used routinely, is described. The system processes data from a relatively large range of tests. Two types of output are produced--one for laboratory purposes, and one for return to the referring physician. The system adds an automatic interpretative report for each set of results. In developing the interpretative system it has been necessary to utilise a number of arbitrary definitions. The present terminology for reporting pulmonary function tests has limitations. The computer interpretation system affords the opportunity to take account of known interaction between measurements of function and different pathological states.

Computers↗
PubMed1991

Applications of expert computer systems.

An expert system is a computer program which uses artificial intelligence to make logical decisions on the basis of input data. The rules the system uses to make its decisions are called heuristics which can be provided in the form of IF . . . THEN statements, or they can be learned by the system from examples. The term "expert" is used because the rules or examples come from human experts and the program is considered to have captured their expertise. Currently there are many expert systems in business and medical use but few, if any, are used in optometry. The rule-oriented nature of many ophthalmic procedures suggests a future role for these systems, but their cost-effectiveness may not yet be favorable enough to justify development of expert systems for optometric practice.

Diagnosis, Computer-Assisted↗
PubMed1985

A personal computer system for testing gas exchange, heart, lungs, ventilatory pump.

This paper reports the development of a computer system for testing gas exchange and lung function in the ICU. The essence of the system is a software package that uses an IBM personal computer for data processing and analysis. Front end hardware is modular, as is software, so that portions or all of the system can be used. The system provides measurements of lung mechanics work, functional residual volume, spirometry, oxygen uptake, carbon dioxide output, lung water, blood gas interpretation, hemodynamics. Reports are provided by standard data base manager and so are easily customized.

Computers↗
PubMed1991

[Quality control of a computer system for repeat prescriptions].

The results of a quality control of a computer system of repeated prescription (RPS) and its basic features are reported. The selected quality criteria were the following: reduction of the bureaucratic index in the visit, correct fulfillment of the treatment order, health attention circuits of the RPS, and compliance of the patient with the treatment. The record of activities and a random sample of treatment orders (TO) were used as sources of data. Quality indexes near the optimal standard (OS) were achieved: bureaucratic index 12.8% (OS = 15%), fulfillment of the TO 94% (OS = 100%), specified dosages 86% (OS = 100%), prescriptions in out-of-date orders 7% (OS = 0%), use higher than calculated 1% (OS = 0%), and use lower than calculated 36% (OS = 25%). Finally, the corrective measures for the detected quality problems are proposed, and the advantages of the computer RPS are discussed.

Algorithms↗
PubMed1985

The EPICS C analyzer. An ergometrically designed flow cytometer computer system.

A description is presented of a new flow-cytometer (FCM) computer system, the EPICS C analyzer, which was developed to be used by a moderately trained technician as opposed to an FCM expert. The system was made robust and user-friendly by the use of menu-based rather than command-driven software. The user primarily interacts with the self-explanatory menus by depressing one of the eight membrane selector switches located on each side of the screen. The minimizing of typing and restriction of the user's responses greatly simplify the use and design of the software. The EPICS C operates in two modes: as a reliable clinical instrument and as a research tool. The instrument settings are stored on disk files rather than manually logged into a book. The settings for the predefined tests are read from the disk.

Cell Separation↗
PubMed1979

An interactive computer system for the analysis of cell lineages.

We have developed an interactive computer system for analysing cell lineage data. It can be utilized in studies of cell motility, cell division, cell differentiation, and cell aging. It has enabled us to document the heterogeneity of human foreskin fibroblasts in culture and to propose that loss of proliferative potential may mean that cells enter a state of differentiation which makes them unable to respond to mitotic stimulation. Our method, which enables us to apply immunological and cytochemical probes after recording the history of a cell lineage, should allow us to define precisely features which uniquely distinguish cycling from noncycling cells on an individual cell basis.

Cell Cycle↗
PubMed1989

[Computer systems for general practitioners. Status and development].

Patient-administrative systems are becoming increasingly accepted in general practice. The market is now more mature than before. Many physicians are now purchasing computer systems for general practice the second time. Due to national characteristics of the health services the market for these systems is not truly international. In Norway this market is dominated by two makes: Infodoc and Profdoc. In future more physicians will use systems for general practice, and more functions will be added, although the usefulness of these may be a matter for discussion. Furthermore, the importance of telecommunications is expected to increase, and similarly, integration with other services. This development would be furthered by central government action for the purpose of harmonizing and standardizing data, systems and possibly user-interface.

Computer Systems↗
PubMed1985

Selecting a computer system for a medical practice.

Although the risk will always exist that a computer system will be selected that does not adequately meet the needs of a practice, this risk may be minimized when the selection process is done properly. A seven-step approach for selecting an office management system is described, with discussion of major factors to consider and pitfalls to avoid.

Administrative Personnel↗
PubMed1997

A computing system for the clinical and experimental investigation of cerebrovascular reactivity.

We present a computing system for the recording and on-line analysis of analogue signals derived from bedside cerebrovascular monitors in different pathophysiological conditions. These include arterial blood pressure and oxygen saturation, end-tidal carbon dioxide concentration, cerebral blood flow velocities using transcranial Doppler ultrasonography, and concentration changes in cerebral oxy- and deoxyhaemoglobin from near infrared spectroscopy. Configuration and analysis adopts arithmetic expressions of different signal processing functions, various statistical properties for each signal, frequency spectrum analysis using fast Fourier transformation, and correlation/cross-correlation. The software offers off-line analysis of non-invasive tests of cerebrovascular reactivity. Several examples of clinical assessment of cerebrovascular reactivity are presented, including cerebral haemodynamic stress tests which employ carbon dioxide, acetazolamide, the breath holding test, leg cuff inflation and deflation, and transient carotid artery compression. Application within the experimental setting with induced haemorrhagic hypotension can also be used.

Cardiovascular Diseases↗
PubMed1991

Knowledge-based computer system to aid in the histopathological diagnosis of breast disease.

A knowledge-based computer system, designed to assist pathologists in the histological diagnosis of breast disease, is described. This system represents knowledge in the form of "disease profiles" and uses a novel inference model based on the mathematical technique of hypergraphs. Its design overcomes many of the limitations of existing expert system technologies when applied to breast disease. In particular, the system can quickly focus on a differential problem and thus reduce the amount of data necessary to reach a conclusion. The system was tested on two sets of samples, consisting of 14 retrospective cases and five hypothetical cases of breast disease. Its recommendations were judged "correct" by the evaluating pathologist in 15 cases. This study shows the feasibility of providing "decision support" in histopathology.

Breast↗