Pipe resistance coefficients identification of water networks considering solvable conditions

2020 ◽  
Author(s):  
Yongxin Liu ◽  
Qingting Du ◽  
Peng Luo ◽  
Pinghua Zou ◽  
Zhongyi He
Keyword(s):  
Linearization Method ◽  
Matrix Analysis ◽  
Analysis Process ◽  
Analysis Theory ◽  
Hydraulic Conditions ◽  
The Matrix ◽  
Successive Linearization Method ◽  
Minimum Number ◽  
Coefficients Identification ◽  
Resistance Coefficients

To make hydraulic models more accurate and realistic, this paper proposes a method to identify pipe resistance coefficients (PRCs) by using the measured heads at partial nodes. A successive linearization method is adopted to solve for the pipe flows, node heads, and PRCs. Based on the matrix analysis theory, the relationships among the number and location of measurement sites, number of hydraulic conditions (HCs), and solvable condition of PRC identification are established. The proposed method can identify all the PRCs when a solvable condition can be satisfied. In addition, the analysis process can be used as a tool to evaluate whether a given arrangement of measurement sites can meet the solvable condition of PRC identification, and to determine the minimum number of HCs. The performed case studies verified the feasibility of the proposed method, and the determined accuracy of PRC identification was noted to satisfy the actual engineering requirements.

scholarly journals Connectivity matrix model of quantum circuits and its application to distributed quantum circuit optimization

2021 ◽  
Vol 20 (7) ◽  
Author(s):  
Ismail Ghodsollahee ◽  
Zohreh Davarzani ◽  
Mariam Zomorodi ◽  
Paweł Pławiak ◽  
Monireh Houshmand ◽  
...  
Keyword(s):  
Quantum Computation ◽  
Quantum Computer ◽  
Quantum Circuit ◽  
Quantum Circuits ◽  
Connectivity Matrix ◽  
Circuit Optimization ◽  
Novel Approach ◽  
The Matrix ◽  
Minimum Number ◽  
Two Phases

AbstractAs quantum computation grows, the number of qubits involved in a given quantum computer increases. But due to the physical limitations in the number of qubits of a single quantum device, the computation should be performed in a distributed system. In this paper, a new model of quantum computation based on the matrix representation of quantum circuits is proposed. Then, using this model, we propose a novel approach for reducing the number of teleportations in a distributed quantum circuit. The proposed method consists of two phases: the pre-processing phase and the optimization phase. In the pre-processing phase, it considers the bi-partitioning of quantum circuits by Non-Dominated Sorting Genetic Algorithm (NSGA-III) to minimize the number of global gates and to distribute the quantum circuit into two balanced parts with equal number of qubits and minimum number of global gates. In the optimization phase, two heuristics named Heuristic I and Heuristic II are proposed to optimize the number of teleportations according to the partitioning obtained from the pre-processing phase. Finally, the proposed approach is evaluated on many benchmark quantum circuits. The results of these evaluations show an average of 22.16% improvement in the teleportation cost of the proposed approach compared to the existing works in the literature.

Dissipative effects on a chemically and thermally radiative heat fluid flow past a shrinking porous sheet

2020 ◽  
pp. 1-14
Author(s):  
A. Shahid ◽  
M. Ali Abbas ◽  
H.L. Huang ◽  
S.R. Mishra ◽  
M.M. Bhatti
Keyword(s):  
Fluid Flow ◽  
Differential Equations ◽  
Thermal Radiation ◽  
Chemical Reaction ◽  
Linearization Method ◽  
Surface Drag ◽  
Suction Parameter ◽  
Similarity Transformations ◽  
Dissipative Effects ◽  
Successive Linearization Method

The present study analyses the dissipative influence into an unsteady electrically conducting fluid flow embedded in a pervious medium over a shrinkable sheet. The behavior of thermal radiation and chemical reactions are also contemplated. The governing partial differential equations are reformed to ordinary differential equations by operating similarity transformations. The numerical outcomes for the arising non-linear boundary value problem are determined by implementing the Successive linearization method (SLM) via Matlab software. The velocity, temperature, and concentration magnitudes for distant values of the governing parametric quantities are conferred, and their conduct is debated via graphical curves. The surface drag coefficient increases, whereas the local Nusselt number and Sherwood number decreases for enhancing unsteadiness parameter across suction parameter. Moreover, the magnetic and suction parameters accelerate velocity magnitudes while by raising porosity parameter, velocity decelerates. Larger numeric of thermal radiation parameter and Eckert number accelerates the temperature profile while by enhancing Prandtl number it decelerates. Schmidt number and chemical reaction parameters slowdowns the concentration distribution, and the chemical reaction parameter influences on the point of chemical reaction that benefits the interface mass transfer. It is expected that the current achieved results will furnish fruitful knowledge in industrious utilities.

scholarly journals Pengembangan Pasar Tenun Serat PT Retota Sakti Kabupaten Pekalongan, Jawa Tengah

2014 ◽  
Vol 9 (1) ◽  
pp. 54-66
Author(s):  
Hari Subagyo ◽  
Mochamad Hasjim Bintoro ◽  
Parulian Hutagaol
Keyword(s):  
Production Management ◽  
Swot Analysis ◽  
Production Capacity ◽  
Marketing Strategies ◽  
Matrix Analysis ◽  
Key Factors ◽  
Five Factors ◽  
The Matrix ◽  
Market Needs ◽  
Internal And External Factors

Potential weaving industry nationally as one of the SMEs so far have not unearthed the maximum due to the development of production management systems. Therefor,  PT Retota Sakti has prompted company management to enhance the creative abilities tenunnya always accompanied by the application of more precise marketing strategies that correspond with the development of competition situation that occurred in the weaving industry. The purpose of this study was (1) Identify and evaluate the position of Marketing PT Retota Way by internal and external factors, and (2) Develop appropriate marketing strategies in developing future business. Analyzed in a descriptive study to emphasize the aspect of marketing, covering demand products to meet market needs; offer, which gives an overview about the availability of products in the process of cultivation and the balance of factors between demand and supply prices. To examine the marketing strategies carried out by quantitative SWOT analysis. The results of factor identification strategy, there are five key factors of internal strengths and weaknesses of four key factors. While the external environment there are five key factors of opportunities and threats of five factors. IFE values ​​2.842 and 2.530 EFE value, and also the combination of these two values ​​in the matrix IE indicates that the marketing strategy lies in the quadrant of five, namely the growth and stability, where the strategies that can run the market penetration, product development and market. QSP matrix analysis results obtained with the most attractive strategy to be implemented is to increase production capacity.

scholarly journals TAKING INTO ACCOUNT THE IMPORTANCE OF MARKETING TRENDS WHEN FORMING AN ENTERPRISE STRATEGY

2021 ◽  
Author(s):  
Tatyana Belova ◽  
Maxim Dunin
Keyword(s):  
Weighting Factor ◽  
Average Score ◽  
Enterprise Strategy ◽  
Brewing Industry ◽  
Timely Manner ◽  
Second Stage ◽  
Analysis Process ◽  
The Matrix ◽  
Market Trends ◽  
Time Awareness

The article considers the dependence of the formation of enterprise strategy on the importance of marketing trends. The need to predict possible market trends in order to respond to them in a timely manner has been proven. The stages of the analysis process are considered. At the first stage, a study of the current situation is conducted and trends are identified that are important when planning further activities. The marketing trends that are defined for the enterprise of the brewing industry of Ukraine - the company "Obolon" are described. At the second stage, the significance of marketing trends is assessed according to the criteria "Trend strength" and "Level of consumer environment development". The following indicators are proposed to assess the significance of the criterion "Trend strength": stability over time, awareness, emotionality, usefulness to the consumer. To determine the significance of the criterion "Level of development of the consumer environment" you can use indicators: customer satisfaction, frequency of product purchase, customer loyalty, comfortable conditions of purchase. A questionnaire is compiled, consumers are surveyed and average scores are determined to assess these indicators. The overall score is determined by multiplying the average score by the weighting factor of the indicator. At the next stage, the position of each trend in the field of the matrix "Trend strength - The level of development of the consumer environment" is determined. The matrix consists of 9 quadrants. The quadrants are grouped into three zones. Zone 1 includes the following quadrants: Independent dependent, Domesticated elephants, Situational dolphins. Trends that fall into this area must be taken into account when forming the company's strategy. Zone 2 has the following quadrants: Geeks, Arabian horses, Dependent amateurs. The trends that fall into it are of medium importance. Therefore, they should be analyzed to determine the appropriateness of their strength. The third zone contains the quadrants Floating Giraffes, Free Crows, Wandering. Trends that fall into this area do not have much impact on the company's activities. Therefore, they can be neglected in shaping the strategy of the enterprise.

scholarly journals OPTIMIZATION OF SAMPLE PREPARATION FOR THE DETERMINATION OF HPA'S VISION IN A GEOMETRIC TECHNIQUE USING MOLECULAR FLUORESCENCE

2012 ◽  
Vol 09 (18) ◽  
pp. 65-70
Author(s):  
Andréa Francisca Fernandes BARBOSA ◽  
Dayanne Chianca MOURA ◽  
Fabiana Roberta Gonsalves da Silva HUSSEIN ◽  
Jailson Vieira MELO ◽  
Djalma Ribeiro SILVA
Keyword(s):  
Sample Preparation ◽  
Solvent System ◽  
Optimum Conditions ◽  
23 Factorial Design ◽  
Essential Step ◽  
Analysis Process ◽  
The Matrix ◽  
Molecular Fluorescence ◽  
Geometric Technique

The sample preparation is considered an essential step in the analysis process. The complexity of the matrix and how the compounds are linked is one of the main difficulties in the extraction. Thus a solvent system combined with an extraction method, both need to be effective against such mishaps. In this work we used the 23 factorial design to determine the optimum conditions for sample preparation. The analysis of the samples were performed in a molecular fluorescence spectrophotometer. The factors selected to investigate the influence on the extraction system were: time of use of ultrasound, the type of solvent (hexane or dichloromethane) and ratio solvent / sample (1:1 and 1:3). The best result was obtained with using the dichloromethane in time of 10 min of ultrasound and the ratio solvent / sample 1:3.

scholarly journals Application of Piecewise Successive Linearization Method for the Solutions of the Chen Chaotic System

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
S. S. Motsa ◽  
Y. Khan ◽  
S. Shateyi
Keyword(s):  
Dynamical Systems ◽  
Numerical Simulations ◽  
Chaotic System ◽  
Good Accuracy ◽  
Linearization Method ◽  
Chen System ◽  
Successive Linearization Method ◽  
Runge Kutta

This paper centres on the application of the new piecewise successive linearization method (PSLM) in solving the chaotic and nonchaotic Chen system. Numerical simulations are presented graphically and comparison is made between the PSLM and Runge-Kutta-based methods. The work shows that the proposed method provides good accuracy and can be easily extended to other dynamical systems including those that are chaotic in nature.

The criterion of arising motion conflict of unmanned vehicles during implementing transportation plan in intelligent urban passenger transportation system

2020 ◽  
Vol 25 (3) ◽  
pp. 79-84
Author(s):  
Shviatsova A.V. ◽  
◽  
Shuts V.N. ◽  
Keyword(s):  
Transport System ◽  
Intelligent Systems ◽  
Historical Context ◽  
Unmanned Vehicles ◽  
Transport Systems ◽  
Passenger Transport ◽  
Electric Cars ◽  
The Matrix ◽  
Minimum Number ◽  
Transportation Plan

The proposed article is devoted to the description of an intelligent urban passenger transport system based on unmanned electric vehicles, sequentially moving along a separate line. This system is a passenger transport system of a new urban mobility, formed under the influence of social conditions generated by high population density in cities, that suppose the development of pedestrian zones and ecological modes of transport, "transport as a service", etc. In this historical context, public transport systems acquire special relevance. The described transport system belongs to intelligent systems, since it is capable of functioning in autonomous mode without human intervention, adaptively responding to changes in the dynamics of the flow of passengers during the day. Passengers are transported by electric cars, which can be combined into cassettes according to the principle of road trains based on the transportation plan drawn up by the intelligent center of the transport system according to the matrix of correspondences, filled in taking into account the incoming requests for service from passengers. When drawing up a transportation plan, the algorithms of the transport system give preference to transportation according to the "source-destination" principle, that is, when the passenger goes to the destination with a minimum number of intermediate stops, and ideally without them. The paper formulates also a criterion of arising of a conflict in the movement of vehicles, which allows to identify situations when an electric vehicle driving in front can detain vehicles following after. The work has relevance because the criterion will allow to make adjustments in the schedule of movement of vehicles and exclude the loss of time and energy that carries the transport system during braking and acceleration of electric cars, as well as to reduce waiting time and travel of passengers.

Study on Kinematics Sensitivities of Folder Mechanism with Clearance

2011 ◽  
Vol 121-126 ◽  
pp. 4764-4769
Author(s):  
Ying Cai Yuan ◽  
Yan Li ◽  
Yi Ming Wang ◽  
Qiang Guo
Keyword(s):  
Sensitivity Analysis ◽  
High Velocity ◽  
High Speed ◽  
Development Trend ◽  
Matrix Analysis ◽  
Analysis Model ◽  
Design Variables ◽  
The Matrix ◽  
The Stability ◽  
Definition Of

High velocity and stability are the development trend and inevitable requirement, but the clearance would make the stability of mechanical system deceased, especially in high speed. To the folder mechanism with clearances in high velocity, combined with the definition of sensitivity and the kinematics analysis, the kinematics sensitivity analysis model is derived by the matrix analysis method. Through the sensitivity analysis model, it can be easy to get the relationship of the design variables and the mechanism’s robustness, which provides the base to design the folder mechanism in high velocity.

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