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The control function is an important tool to monitor organisational performance of the operational plans. The control function is dynamic and can be used as an end function of an activity or for forward looking in planned activities. The control function is important in operational planning and decision making in mining organisations. Without the control function, mining organisations cannot monitor and evaluate the performance of their operational plans. [ABSTRACT FROM AUTHOR]

Control of Malaria is very difficult due to anti malarial drug resistant diseases. Many control measures exist such as; insecticides treated bed net (ITNs) and drug treatments. Most mathematical models in literature used constant control measures which is not realistic. Here we use optimal control as a measure in curtailing the disease spread. The control function is added in the sensitive strain. Analysis of the controller was carried out. [ABSTRACT FROM AUTHOR]

This paper deals with automatic stabilization of rockets, submarines or satellites dynamics. This stabilization is based on relay-type automatic regulators, by using the minimal time criterion for optimal control with the Pontreagiune extremal principle. In this study, the state variables are the rotation angles and the control function has 2 components, which are appearing because of lateral rolling perturbations. Finaly, numeric-analytical studies are approached, and the results are graphically presented. [ABSTRACT FROM AUTHOR]

In this paper the study of horizontal flight stabilization by using an automate system to control the pitch perturbations will be approached. This optimal control method is based on the extreme principle of Pontreaghin, finding the control function via the minimum transfer time from the initial (disrupted) position in the final position (target). The optimal control U* is determined, as well as the optimal trajectories which solve the optimal control problem (O.C.P.), by using a relay-type regulator with rapid action to stabilize this controllable system, suitable for aircrafts of rockets equipped with autopilot. [ABSTRACT FROM AUTHOR]

An n-dimensional linear difference equation with a delay and a vector control function is considered. An equivalent condition for relative controllability is stated, and a complete characterization of control functions is given. Moreover, a sufficient condition for relative controllability of weakly nonlinear difference equation is proved. [ABSTRACT FROM AUTHOR]

This research is devoted to revision of modern functions of accounting taking into account change of environment and internal potential of registration procedures. It is obvious that development of the public relations objectively promotes improvement and modification of the content of the main functions of accounting according to modern expectations of interested parties. Traditionally in a control system the accounting performed the following main functions: control, ensuring safety of property, information, feedback, analytical. The analysis of modern researches testifies the prevalence in their structure of the developments devoted to progress of information and analytical functions of accounting. Besides, author observes the tendency of specification of the accounting functions, which is explained by various phenomena and the processes accompanying the change of national economy structure and legislative base of business. However, without belittling the importance of results of such researches, here should be noted the relevance of views revision for the accounting control function content. In favor of relevance of research of accounting control function it is possible to call the facts of the corporate financial scandals caused by fraud during the forming and confirmation of reliability of financial reporting. So, the Russian review of economic crimes for 2014, carried out by PricewaterhouseCoopers, testifies that as a result of accounting data manipulation 25% of respondents in Russia underwent to economic crimes, worldwide - 22% [1]. Efficiency of prevention of economic crimes in the accounting sphere in many respects is defined by systemacity and a continuity of the control procedures integrated into system of accounting in the organization. Addressing to history of accounting and its conceptual bases, it is visible that priority of control function is connected with the solution of problems of effective management ensuring in the enterprise and quantifications of financial results. Management development at the present stage demands coordination of functions of accounting taking into account its functionality and a functional demand. Such approach is based on an institutional paradigm of accounting. Control function of accounting shouldn't be considered separately from other its functions as today a priority problem of accounting ensuring reliability of registration information admits. Therefore, mechanisms of formation of the internal control environment as instrument of decrease in risks and increase of reliability of the internal registration information, focused on nature of public expectations, have to be considered as key question in the researches devoted to functions of accounting. The goal of research is to analyze the relationship between the development of accounting, changing needs of the interested parties and the transformation of the control function of accounting. [ABSTRACT FROM AUTHOR]

This paper describes essential functions of prosumer's electric equipment (sources, resources) that can be interconnected to form microgrids for smart grid applications that are integrated with utility networks. Focus is on the protection and control functions of low voltage part of a substation. Functions of an experimental microgrid application were simulated with MATLAB. The aim of the modelling and simulation is to define and optimize parameters and functions that are important for automated energy exchange through a substation between energy storage, generators, loads, and utility networks. Sample control topologies and program modules of a substation controller are developed. [ABSTRACT FROM PUBLISHER]

The method for constructing discrete control functions guaranteing that solutions of nonlinear systems of ordinary differential equations join given points in the phase space is developed. The goal is achieved by reducing the original problem to stabilization of linear nonstationary system of a special kind and solving the Cauchy problem for the auxiliary system of ordinary differential equations. The efficiency of the algorithm is illustrated by numerical simulation of specific practical problem. [ABSTRACT FROM AUTHOR]