THE PROBLEM OF PARAMETRIC OPTIMIZATION AND SECURITY OF FUNCTIONING OF HYDRAULIC SYSTEMS

2016 ◽  
Vol 9 (1) ◽  
pp. 48-51
Author(s):  
Сазонова ◽  
Svetlana Sazonova
Keyword(s):  
Mathematical Programming ◽  
Water Supply ◽  
General Problem ◽  
Parametric Optimization ◽  
Problem Definition ◽  
Hydraulic Systems ◽  
Optimum Parameters ◽  
Definition Of ◽  
Gas Supply ◽  
Parametrical Optimization

Problem definition of parametrical optimization of hydraulic systems is considered. The general problem of parametrical optimization for systems of water supply and gas supply is presented in the form of a problem of mathematical programming. As a result of the solution of the considered task optimum parameters of the studied systems have to be determined, the required levels of reliability and safety when functioning are ensured.

NUMERICAL EXPERIMENT ON SOLVING THE PROBLEM OF PARAMETRIC OPTIMIZATION TO ENSURE THE SAFETY OF THE HYDRAULIC SYSTEM

2016 ◽  
Vol 8 (4) ◽  
pp. 64-68
Author(s):  
Сазонова ◽  
Svetlana Sazonova
Keyword(s):  
Numerical Experiment ◽  
Economic Performance ◽  
Hydraulic System ◽  
Parametric Optimization ◽  
Computational Experiments ◽  
Research System ◽  
Hydraulic Systems ◽  
Residential District ◽  
The Impact ◽  
Gas Supply

The results of computational experiments to assess the impact of parametric optimization of hydraulic systems on economic performance. The object of the research system of low-pressure gas supply of a residential district was chosen. The purpose of research is to optimize the economic parameters for the number of backup sites, sufficient to provide the desired level of reliability and security in the operation of the systems studied.

COMPUTER EXPERIMENT FOR TESTING THE APPROXIMATION ALGORITHM OF PARAMETRIC OPTIMIZATION OF HYDRAULIC SYSTEMS

2016 ◽  
Vol 9 (1) ◽  
pp. 29-33
Author(s):  
Мезенцев ◽  
A. Mezentsev ◽  
Сазонова ◽  
Svetlana Sazonova
Keyword(s):  
Approximation Algorithm ◽  
Parametric Optimization ◽  
Computer Experiment ◽  
Low Pressure ◽  
Computational Experiments ◽  
Hydraulic Systems ◽  
Residential Neighborhood ◽  
Gas Supply

The results of computational experiments for testing the approximation algorithm of parametric optimization of hydraulic systems. The object of investigation was adopted SIS theme of gas supply of low pressure residential neighborhood.

scholarly journals Talent and Talent Management: Definition and Issues

2018 ◽  
Vol 14 (2) ◽  
pp. 174-186 ◽  
Author(s):  
Novera Ansar
Keyword(s):  
Cognitive Ability ◽  
General Problem ◽  
Critical Review ◽  
Practical Implication ◽  
Talent Management ◽  
Shared Understanding ◽  
Corporate World ◽  
Uniform Definition ◽  
Time Periods ◽  
Definition Of

Talent' has become a popular term amongst academicians and practitioners during the last two decades. A general problem, despite this increased interest on “Talent”, is that the construct of Talent and Talent Management lack theoretical vigor and standardized definition. The aim of this paper is to make a contribution to the literature on “Talent” and “Talent Management” by a critical review of the construct of “Talent”. The evolution of the definition of the term “Talent” was traced through different time periods starting from the Biblical Times when talent was used for a very large sum of money to the present times when it is considered as a cognitive ability. A philological perspective was also taken to identify the roots of different approaches towards “Talent” in speakers of different languages and terms, that are interchangeably used in lieu of Talent were also explored. Different definitions of the term “Talent Management” were analyzed to understand the different approaches taken by the authors. The dominant approach used in the definitions of Talent Management was found to be exclusive. The study concluded that it is important to develop a uniform definition of Talent and Talent Management for a shared understanding for both academic work on the topic and its practical implication for the corporate world.

Potential impact of natural hazards on water supply systems in Alpine regions

2008 ◽  
Vol 3 (3) ◽  
Author(s):  
M. Möderl ◽  
D. Vanham ◽  
S. De Toffo ◽  
W. Rauch
Keyword(s):  
Water Supply ◽  
Natural Hazards ◽  
Potential Effect ◽  
Water Supply Systems ◽  
Data Sets ◽  
Management Support ◽  
Prevention Measures ◽  
Support Tool ◽  
Alpine Regions ◽  
Definition Of

One of the most important aspects in water supply management is supply security. In this article a methodology is introduced to first identify vulnerable sites of a water supply system (WSS) and second to estimate the potential effect of alpine natural hazards on this system. The approach serves for the definition of zones with low, medium and high potential risk by combining vulnerability and hazard maps. This approach enables the possibility to accomplish prevention measures on risky sites considering the available budget. A management support tool (VulNetWS - Vulnerability of Water Supply Networks) is developed which quantifies vulnerability based on hydraulic and quality simulations assuming component failure of each single WSS component. Hazards of flooding, landslide, debris flow and avalanches are calculated and categorized in potential low, medium and high hazard zones. For this analysis different GIS data sets (e.g. Austrian hazard zone maps, HORA “Flood Risk Zoning”) are used. The methodology is presented by applying it upon an alpine region encompassing the municipality of Kitzbühel (Tyrol - Austria) and 4 neighbouring municipalities. The combination of vulnerability and hazard is summarized using a risk matrix that highlights a zone of 0.42 square kilometres within the study area as being potentially risky.

A Reverse Glue Approach to Automated Construction of Multi-Piece Molds

2003 ◽  
Author(s):  
Yong Chen ◽  
David W. Rosen
Keyword(s):  
Design Process ◽  
Problem Definition ◽  
Mold Cavity ◽  
Mold Design ◽  
Difficult Time ◽  
Construction Step ◽  
Efficiency And Effectiveness ◽  
Definition Of ◽  
Face Generation ◽  
Construction Algorithms

Mold design can be a difficult, time-consuming process. Determining how to split a mold cavity into multiple mold pieces (e.g., core, cavity) manually can be a tedious process. This paper focuses on the mold construction step of the automated mold design process. By investigating glue operations and its relations with parting faces, an approach based on reverse glue operation is presented. The key of the reverse glue operation is to generate parting faces. A problem definition of parting face generation for a region is provided. Correspondingly, three face generating criteria are identified. Based on the parting lines of a region, our algorithms to generate the parting faces are presented. Our mold construction algorithms for two-piece molds and multi-piece molds are also presented with brief discussions. Some industrial examples are provided which illustrate the efficiency and effectiveness of our approach. We tested our mold designs by fabricating stereolithography mold inserts (a rapid tooling method) and molding parts.

scholarly journals Investigation of hydraulic fitting losses

2018 ◽  
Vol 168 ◽  
pp. 02011 ◽  
Author(s):  
Marian Bojko ◽  
Milada Kozubková
Keyword(s):  
Flow Direction ◽  
Experimental Methods ◽  
Numerical Approach ◽  
Model Verification ◽  
Hydraulic Systems ◽  
Mathematical Methods ◽  
Standards And Regulations ◽  
Definition Of ◽  
Resistance Coefficients

Fluid flow in hydraulic systems, fittings, and piping causes hydraulic losses due to the change of flow direction and friction in the fluid. The main consequence of the resulting losses is the increase in the overall pressure gradient of the circuit. The paper is focused on the investigation of valve losses and the determination of resistance coefficients, the definition of which depends on the valve type. Methods of determination are of two types, i.e. experimental methods and mathematical methods. In the case of experimental methods, the procedures prescribed by the standards and regulations must be respected. Mathematical methods are related to defining an appropriate mathematical model and numerical approach. Both methods are applied to the ball valve and model verification is performed at the same time. The output of the thesis is the methodology for determination of resistance coefficients of valves with other diameters and other flowing media based on verified mathematical modeling.

scholarly journals THEORETICAL ANALYSIS OF INFLUENTIAL PARAMETERS TO COMPRESSION AND DECOMPRESSION PROCESS OF COMPRESSED OIL IN HYDRAULIC SYSTEMS OF THE PRESS

2017 ◽  
Vol 22 (2) ◽  
Author(s):  
MILUTIN ŽIVKOVIĆ
Keyword(s):  
Adverse Effects ◽  
Theoretical Analysis ◽  
High Pressures ◽  
Large Diameter ◽  
Hydraulic Systems ◽  
Analog Model ◽  
The Press ◽  
Definition Of ◽  
Influential Parameters ◽  
The Ideal

Compressibility of hydraulic oil is very significant for large diameter cylinder presses, especially if they are exposed to high pressures. The paper presents a theoretical analysis of the process of compression and decompression of oil in the cylinders with and without the presence of air presenting an analog model. Although considerations are relating to the ideal conditions of the process of compaction, the paper defines the basic mathematical processes depending on compression and discharge of the same. They refer to the definition of the time discharge and elimination of adverse effects in the same.

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