摘要:

Based on the concept that task progress is the growth of developments in a structured work and activity process, mathematical models ore developed to define, identify, and follow work progress and resourco utilization patterns. These models ore developed from the Pearl-Roed Logistic function and describe operating characteristics in the micro resource allocation and control problem. The model3 are the Task Operating Characteristic (TOC) curve and the Resource Operating Characteristic (ROC) curve. A second paper extends the theoretical results and gives examples (Braswell 1971).

ISSN:0020-7721    

DOI:10.1080/00207727108920192

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

Baaed on TOC (Task Operating Characteristic) and ROC (Resource Operating Characteristic) curves (Braswell 1971), P(t) and R(t), a family of feasible curves are experimentally selected with parameter specifications for a and S. Additional models are developed for activity progress and resource utilization monitoring and control. A resource allocation method is developed and a Best 1'ath (JJP) strategy is presented to reprogramme progress of assignments and rates of resource expending. Task Progress (TP) and Rosource Depletion (RD) models are developed. Examples, and figures illustrate applications.

ISSN:0020-7721    

DOI:10.1080/00207727108920193

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

This paper derives new estimation algorithms for use with systems with sequentially correlated observation noise. Both single and two-stage correlation are considered. The algorithms appear much like the well known white noise algorithms and are not much more complex.

ISSN:0020-7721    

DOI:10.1080/00207727108920194

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The notion of polarity is often used in developmental biology for the explanation of various phenomena. Some authors have considered that polarity is absolutely essential for certain kinds of phenomena to appear. In this paper, we identify polarity of an individual cell with its ability to distinguish in somo sense between its ‘ left’ and its ‘ right’ side. We show, using a developmental model originally duo to Lindenmayer, that even if we restrict ourselves to models in which individual cells have no polarity, the models remain general enough to realize any effective procedure, in other words, they have a universal computing ability. Various special cases are considered, These results, as well as other results concerning regulation and synchronization in development, indicate that polarity is not a necessary con-copt, and may not even he an essential concept, for morphogenesis.

ISSN:0020-7721    

DOI:10.1080/00207727108920195

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

L'uno dos causes do la limitation du service des motropolitains actuels ost la limite memo do la frequence de passage dea rames, imposee par des considerations do securite. On d6crit un systeme ayant pour but do corriger ce defant. Uno analyse oporafcionnoRe succinate montre quo le taux de service est Men augments. On montre ensuito comment la thoorio des jeux differentials pout resoudre lo probleme do commando pose. Ensuite on fait un tour d'hori/.on des principalos dlfficultes soulovee9 par la realisation complete du systeme.

ISSN:0020-7721    

DOI:10.1080/00207727108920196

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

This paper reviews the use of simulation techniques for the testing and analysis of econometric models. Control theory is shown to be a way of obtaining a concise formulation of the properties of the optimal solution rather than the actual solution. Most problems arising from econometric models cannot be solved algebraically and solutions to such problems are obtained using a series of simulation runs. The relationship between Theil's docision rule algorithm and Leontief's dynamic input-output model is demonstrated. In addition, the continuous-time version of the Leontief model is optimized for a quadratic criterion using dynamic programming. Problems relating to the formulation of the social welfare function are discussed and in particular whether the Leentief model provides the appropriate variables needed for the evaluation of social welfare Tho place of control theory within the framework of the Cambridge Growth Model is presented both in relation to past and proposed future work.

ISSN:0020-7721    

DOI:10.1080/00207727108920197

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

Set stability and uniform set stability of differential equations involve known specific bounds on solutions of the differential equations under consideration. Comparison theorems are presented giving sufficient conditions for these forms of stability. The conditions include the existence of a Liapunov-Like function and the set stability of a scalar differential equation. Examples are given to demonstrate the method.

ISSN:0020-7721    

DOI:10.1080/00207727108920198

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

In this present paper, the rather metaphorical ideas of ‘ positional information ’ and ‘regulation’ as used hy Wolpert (1968, 1960) in connection with morphogenesis are placed in a more general dynamical context in which those ideas are sharply defined in terms of the stability properties of classes of dynamical Systems.

ISSN:0020-7721    

DOI:10.1080/00207727108920199

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor