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At least 1,549 records · Page 86Linked to original sources
PubMed1995

Analysis of single and multiple neuronal discharges as point processes: a computer program set.

The analysis of single or multiple neuron discharges as point processes has gained considerable importance for understanding the principles of information coding and processing in the central nervous system (CNS). Here, a set of programs written in BASIC language for microcomputers is described for the point process analysis of discharges of individual or multiple simultaneously recorded neurons as well as the mathematical basis of the methods implemented in these programs. The input data consist of one or more ASCII files with the spike or stimulus occurrence times generated by the spike sorting system used. Interspike interval histogram, autocorrelogram, autospectrum, cross-correlogram, joint impulse configuration scatter diagram, poststimulus time histogram and joint peristimulus time scatter diagram, together with other more conventional methods, are included in this package which provides graphical or alpha numeric results which can be printed or stored on disk for additional graphical or statistical analysis.

Action Potentials↗
PubMed1998

MARC ES: a computer program for estimating medical information storage requirements.

During combat, documentation of medical treatment information is critical for maintaining continuity of patient care. However, knowledge of prior status and treatment of patients is limited to the information noted on a paper field medical card. The Multi-technology Automated Reader Card (MARC), a smart card, has been identified as a potential storage mechanism for casualty medical information. Focusing on data capture and storage technology, this effort developed a Windows program, MARC ES, to estimate storage requirements for the MARC. The program calculates storage requirements for a variety of scenarios using medical documentation requirements, casualty rates, and casualty flows and provides the user with a tool to estimate the space required to store medical data at each echelon of care for selected operational theaters. The program can also be used to identify the point at which data must be uploaded from the MARC if size constraints are imposed. Furthermore, this model can be readily extended to other systems that store or transmit medical information.

Humans↗
PubMed1997

[The usefulness of a computer program Oxygen Status Algorithm (OSA) with particular consideration of oxygen parameters in the Clinic of Chest Diseases].

The traditional parameters such as the oxygen tension (pO2) and the haemoglobin oxygen saturation (sO2) obtained from arterial blood samples are not always sufficient in clinical practice. The purpose of the study is to present the examples where pO2 and sO2 even in combination may provide misleading information. We examined patients with bronchial asthma, respiratory insufficiency and with extrinsic allergic alveolitis who had been admitted to the Chest Disease Department. We used the Oxygen Status Algorithm (OSA) to calculate the new oxygen parameters. These new parameters are: 1) oxygen extraction tension px defined as the tension required to extract 2.3 mmol of oxygen per liter of blood, 2) the concentration of extractable oxygen cx defined as the concentration of oxygen extracted per liter of blood at a tension of 5.0 kPa, 3) the oxygen compensation factor (Qx), derived as 2.3 mmol/l/cx. This data defines the blood oxygen availability. Additional parameters such as effective hemoglobin concentration ceHb (equivalent of oxygen capacity) and the hemoglobin oxygen affinity (p50) inform us of the oxygen supply to the tissue. The results show that the new oxygen parameters are helpful in undertaking decisions of starting therapy and its duration.

Adult↗
PubMed1994

[A computer program for the geographic distribution of fluvial mollusks of medical interest in Cuba].

The need to know the distribution of mollusks considered to play an important medical role in Cuba through a geographic representation motivated us to develop a software capable of acting as a system for the retrieval of geographic information in which the requested data would be presented in maps. The system has been called DMIM and it is a useful tool for malacological studies, and assessment and planning of programs for the control of intermediate host mollusks, as well as for teaching purposes.

Animals↗
PubMed1984

PMAP, PMAPS: DNA physical map constructing programs.

Computer programs are described, which facilitate the construction of the restriction site (physical) map of DNA molecules. By knowing the length of each fragment and its degree of error in the single and the double restriction enzyme digestions, the programs give all the possibilities for the physical map. This method is applicable to linear DNA molecules. Several examples are presented which indicate the high efficiency of the programs in constructing restriction site maps for the 62 Kb chromosome of bacteriophage 16-3. We have constructed complex maps (i.e. EcoRI map with 16 and EcoRV with 11 fragments).

Base Sequence↗
PubMed1987

Epidemiologic programs for computers and calculators. Exact binomial confidence intervals for the relative risk in follow-up studies with sparsely stratified incidence density data.

The authors present a computer program for hypothesis testing and calculation of exact binomial confidence intervals for the adjusted relative risk in follow-up studies involving multiple strata with incidence density (person-time) denominators and small or zero person-count numerators. The program is an extension to multiple tables of a single-table method by Rothman and Boice (NIH publication no. 79-1649, Washington, DC: US GPO, 1979) and represents a counterpart for person-time denominators to the program of Thomas (Comput Biomed Res 1975;8:423-46) for exact analysis of multiple tables with person-count denominators. Comparisons with asymptotic analyses of real and simulated data are given. Copies of the program are available from the authors on request.

Adolescent↗
PubMed1977

A program to compute the sizes and numbers of spherical bodies from observations made on tissue sections.

A computer program, written in standard Fortran, is given to facilitate the computation of the sizes and correct distribution of spheres from the number and size of the circular profiles observed in tissue sections. The method is particularly valuable in cases where it is necessary to determine absolute numbers of cells or subcellular fragments where the objects of interest are not of uniform size. The method gives true cell numbers and the distribution of the spherical diameters.

Biometry↗
PubMed1984

A program for computing power spectra on a microcomputer.

A computer program is presented that will calculate Fourier transforms and power spectra. The program is written in assembly language for the Z-80 microprocessor and has been used on a Radio Shack TRS-80 microcomputer to analyze time-dependent data from laboratory experiments.

Animals↗
PubMed1986

Epidemiologic programs for computers and calculators. Decision-tree analysis using a microcomputer.

Decision analysis using decision trees enables the medical decision maker to simplify and solve complex problems. The technique, however, becomes cumbersome when the decision maker attempts to perform sensitivity analysis on the problem. This paper describes a computer program, written in PASCAL, to construct, modify, and perform deterministic and stochastic simulations and risk analysis on a hypothetical, decision-analysis problem. The deterministic version can be run on microcomputers with CP/M, PC-DOS, or MS-DOS operating systems, and the deterministic/stochastic version requires a PC-DOS or MS-DOS operating system.

Computers↗
PubMed1991

An efficient program for computing conditional maximum likelihood estimates and exact confidence limits for a common odds ratio.

This paper describes a method and associated computer program for calculating exact confidence limits and P values, along with the conditional maximum likelihood estimate of the common odds ratio for a series of 2 x 2 tables. The program can be used to calculate exact estimates for matched data and is considerably faster than others currently available.

Algorithms↗
PubMed1996

Optima: a windows-based program for computer-aided optimization of controlled-release dosage forms.

The purpose of this work was to develop a computer program that assists optimization of controlled-release devices, both visually and mathematically, using response surface methodology (RSM). A Windows-based computer program, Optima, which interactively implemented a number of subroutines for the optimization procedure, was developed. Optima is an integrated, user-friendly, and graphically oriented program for pharmaceutical dosage form optimization. Central composite design is implemented in the program. First- and second-order models containing up to five variables can be fitted to the data. The user can also choose between linear and exponential individual desirability functions, and use them to construct an overall desirability function that combines all the response variables in a single response. The program can predict the optimum levels of experimental variables, with respect to individual responses and/or the overall desirability. Optima has been successfully used in the development of sustained-release AZT-loaded microspheres. During the optimization process, three experimental variables were investigated and four responses were measured. The experimental design was a central composite design that was generated by the program. The response values were used by the program to calculate the individual desirability functions, which were then combined into an overall desirability function. The individual responses as well as the overall desirability function were optimized by fitting to a second-order polynomial equation. The response surfaces were generated and optimum levels of the experimental variables were predicted. The observed responses of the optimized formulation were very close to those predicted by Optima. The program proved to be a very useful, integrated tool for optimization of the controlled-release microspheres.

Computer Graphics↗
PubMed1990

Privacy Act of 1974; computer matching program--HCFA. Clarification--computer match between HCFA and the Internal Revenue Service (IRS)--notice published in the Federal Register on July 5, 1989.

Pursuant to the Computer Matching and Privacy Protection Act of 1988, Public Law 100-503, October 18, 1988, and the Office of Management and Budget (OMB) Guidelines on the Conduct of Matching Programs, the IRS published a notice in the Federal Register (54 FR 28149; July 5, 1989) announcing their intention to conduct a match with a number of Federal and State agencies including HCFA. These matches, in accordance with various provisions of section 6103 of the Internal Revenue Code (IRC) of 1986, provide these agencies with tax information from IRS records to assist them in administering the programs and activities as described. The match with HCFA is pursuant to IRC 6103(1)(7). The IRS is required, upon written request, to disclose current information from returns with respect to unearned income to any Federal, State, or local agency administering certain federally approved programs to provide, among other things, medical assistance. HCFA is publishing this notice to ensure that the public is aware that it is participating in this match to verify Medicaid eligibility. The HHS Data Integrity Board has approved an Agreement between HCFA and the IRS on February 8, 1990, as required by the Computer Matching and Privacy Protection Act of 1988.

Centers for Medicare and Medicaid Services, U.S.↗
PubMed1982

Teaching the uptake and distribution of halothane. A computer simulation program.

A computer aided learning program for teaching the kinetics of uptake and distribution of the inhalational anaesthetic halothane is described. The program is based on a seven-compartment model which simulates the action of halothane on ventilation and on the cardiovascular system. The program is available to the student in four forms: one with no changes in circulation or respiration, one with the cardiovascular effects of halothane included, one with respiratory effects only, and one with both of these effects combined. The student can study the importance of the influence of halothane on respiration and blood circulation by comparing results from simulations on different models. The simulation is presented as graphs which are continuously displayed on an alphanumeric visual display terminal. Interaction with the program is possible at all times to change the simulation speed, the variables being graphed, the inspired halothane fraction, and the fresh gas flow.

Anesthesia, Inhalation↗