The objective of many simulations is to study the steady-state behavior of a nonterminating system. The initial conditions of the system are often atypical because of the complexity of the system. Simulators often start the simulation with the system empty and idle, and truncate, or delete, some quantity of the initial observations to reduce the initialization bias. This paper studies the application of Schriber's truncation rule to a queueing model, and the effects of parameter selection. Schriber's rule requires the simulator to select the parameters of batch size, number of batches, and a measure of precision. In addition, Schriber's rule assumes the output is a time series of discrete observations. Previous studies of Schriber's rule have not considered the effect of variation in the time scale (time between observations). The performance measures for comparison are the mean squared error and the half-length of the confidence interval. The results indicate that the time scale and batch size are significant parameters, and that the number of batches has little effect on the output. A change in the distribution of service time did not alter the results. In addition, it was determined that multiple replicates should be used in establishing the truncation point instead of a single run, and the simulator should carefully consider the choice of time scale for the output series and the batch size. / Graduation date: 1991

The objective of many steady-state simulations is to study the behavior of a nonterminating system with a peak load of infinite duration. Due to the complexity of the system, the initial conditions of the system are often atypical that often requires the simulators to start the system with the empty and idle conditions. Consequently, deletion of some initial observations is required to reduce the initialization bias induced by atypical initial conditions. This paper studies the application of Schriber's truncation rule to the complex queueing systems (specifically, the two-machine and three-machine tandem queueing system) and the effects of parameter selection (i.e. parameters batch size and time between observations) on performance measures. Based on the previous studies of Schriber's rule on the one-machine system, parameters batch count and tolerance are held constant. Mean-squared error and half length are used as measures of accuracy and interval precision in comparing the results. The results of both systems show that time between observations and batch size are significant parameters, and the recommendations for the two-machine system can be generalized for the three-machine system. Increasing the number of machines in the system from two to three requires a careful reduction in the value of time between observations. Besides, multiple replications should be used to minimize the extreme results in determining the steady-state mean number of entities and the truncation point. / Graduation date: 1992

No description available.

Yuhuan Pan, Stanley B. Gershwin. / "April 1983" / Bibliography: p. 45-46. / "Contract No. DAAK11-82-0018"

The Diploma Thesis is based on the Analysis of the real estete market of flats in Brno – mesto focusing on Brno-stred and Brno – Bystrc. Description and characteristics of selected places in Brno – mesto, the analysis of real estate market with flats for selected places, the description of factors affecting the price of flats, the explanation of pricing definitions, the description of the valuation methods and the history of valuation.

This thesis aimed to assess the level of processes occurring in the selected company using the methods of process management and propose any changes. Selected company is the joint stock company SAG. In the theoretical part, the author defined the basic concepts and methods of process management, the output of the literature review. In the practical part, the analysis and evaluation processes in selected companies to identify those business processes that have priority in terms of their performance. Based on the priority business processes, subprocesses have been designed with low performance affecting a large number of critical factors, which were proposed changes to increase efficiency of these subprocesses.

Inom hälso- och sjukvårdsområdet såväl som inom många andra yrkesområden förs idag en diskussion om säkerhet och hur denna kan upprätthållas. Anestesisjukvården är inget undantag. Den största delen av debatten ligger på en lednings eller chefsnivå, där man pratar om hela system som måste omarbetas för att finna en säkrare miljö för patienter och yrkesverksamma. Syftet med denna studie var att belysa och beskriva de metoder som de kliniskt verksamma inom anestesisjukvården kan använda sig av för att ge en så säker vård som möjligt till patienten i samband med anestesi. Metoden var en litteraturstudie som bygger på tio vetenskapliga artiklar. Resultatet visade att de fem metoder som används är incidensrapportering, checklistor, teamträning, fortbildning med och utan simulatorer samt utökat användande av videoteknik. Det visade sig att dessa metoder inte är nya. Samma metoder finns beskrivna i litteraturen sedan 1970-talet men de har vidareutvecklats. / In health care as well as in many other professions today there are a debate going on about safety management and preventive safety work. The anaesthesia department is no exception.The main discussion is on the level of leadership, and it is about how to change whole systems so the environment around the patient and the professional work will be safer. The purpose of this literature review was to elucidate and describe the methods the anaesthetisa workers can use to give the patient as safe anaetsthesia care as possible. Our method was a literature review based on ten scientific articles. The result showed five different methods, incident reporting, checklists, theoretical as well as practical education with and without simulators and more use of video technique. The methods described were not new, they had been discussed in the literature sins 1970, but they have been developed.