scholarly journals The matrix analysis of spectral projections for the perturbed self-adjoint operators

2019 ◽  
Vol 16 ◽  
pp. 369-405
Author(s):  
N. B. Uskova
Keyword(s):  
Matrix Analysis ◽  
The Matrix ◽  
Adjoint Operators ◽  
Spectral Projections

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.

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.

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.

A Method of Extracting Feature of Phonic Signal Based on the Matrix Analysis

2013 ◽  
Vol 457-458 ◽  
pp. 1200-1203
Author(s):  
Yang Xu ◽  
Fang Chao Hu
Keyword(s):  
Embedded System ◽  
Feature Vector ◽  
Recognition Rate ◽  
Audio Signal ◽  
Coefficient Matrix ◽  
Matrix Analysis ◽  
Discrete Wavelet ◽  
Feature Vectors ◽  
The Matrix ◽  
The Embedded System

In the speech recognition technology, feature extraction is essential for the system recognition rate, taking amount of strategies to find the better feature vectors are most researchers target. This paper presents a method of extracting feature of audio signal based on the discrete wavelet transform, then decomposed the coefficient matrix by the matrix analysis way, through this method to find a new thinking on the way of extracting feature vector. The method can be achieved in the procedure. The main purpose is to reduce the dimension of feature vector, make the vector briefer, and then reduce the computing complexity in the embedded system. This method can reduce the feature vectors dimension, accelerated the computing velocity.

Matrix Analysis of Shell Structures with Flexible Frames

1958 ◽  
Vol 9 (4) ◽  
pp. 361-394 ◽  
Author(s):  
J. S. Przemieniecki
Keyword(s):  
Thermal Loading ◽  
Arbitrary Cross Section ◽  
Shell Structures ◽  
Matrix Analysis ◽  
Internal Load ◽  
Flexibility Matrix ◽  
The Matrix ◽  
Simple Matrix ◽  
Curved Panels ◽  
And Diffusion

SummaryA simple matrix method is presented for the deflection and stress analysis of cylindrical shell structures of arbitrary cross section stiffened by flexible frames. The method is an extension to fuselage structures of the Matrix Force Method developed by Argyris, in which the internal load system in the structure consists of two parts:—(a) synthetic load distribution, represented by the matrix b0, satisfying the external and internal equations of equilibrium, and(b)self-equilibrating load systems, represented by the matrix b1, which are introduced to satisfy compatibility conditions. The magnitudes of these self-equilibrating load systems are determined from the generalised compatibility equations formulated using the flexibility matrix f for the un-assembled elements of the structure. The self-equilibrating systems are non-orthogonal, but are arranged in such a way that the mixing between one system and another is kept to a minimum and, consequently, the resulting compatibility equations are well-conditioned. The three basic matrices, b0, b1;and f, are compiled using only very simple formulae. The matrices b0and b1depend on the geometry of the structure, while the flexibility matrix f is a function of geometry and elastic properties. The present analysis is applied to cut-out problems in fuselage structures. It can also be used for problems involving thermal loading and diffusion of loads in curved panels stiffened by flexible frames.

Tolerance Sensitivity Robust Design and Evaluation Method

2011 ◽  
Vol 55-57 ◽  
pp. 924-928 ◽  
Author(s):  
Jian Mao ◽  
Yan Long Cao
Keyword(s):  
Robust Design ◽  
Evaluation Method ◽  
Matrix Analysis ◽  
Analysis Method ◽  
Complex Assembly ◽  
Design Models ◽  
The Matrix ◽  
Manufacturing Variation ◽  
Design Techniques

Robust design is less sensitive to the manufacturing variation and its demand for controlling the manufacturing variation can be reduced. The existing robust design techniques are limited to solve individual synthesis problems, and these methods seldom consider the problem of tolerance sensitivity. This paper presents a method for tolerance sensitivity design and evaluation. First, tolerance sensitivity robustness is analyzed and the tolerance sensitivity robust design models are developed. Then, the matrix analysis method is introduced to evaluate complex assembly relationship among design functions and parameters. The results show that compared with origional mothod, the proposed method is siutble and reliable.

scholarly journals Nonlinear dynamics of full-range CNNs with time-varying delays and variable coefficients

2020 ◽  
Vol 25 (1) ◽  
Author(s):  
Shuxin Liu ◽  
Haijun Jiang ◽  
Liwei Zhang ◽  
Xuehui Mei
Keyword(s):  
Full Range ◽  
Functional Method ◽  
Variable Coefficients ◽  
Matrix Analysis ◽  
Time Varying ◽  
Globally Exponential Stability ◽  
The Matrix ◽  
Uniqueness Of The Solution ◽  
Lyapunov Functional Method ◽  
Improved Model

In the article, the dynamical behaviours of the full-range cellular neural networks (FRCNNs) with variable coefficients and time-varying delays are considered. Firstly, the improved model of the FRCNNs is proposed, and the existence and uniqueness of the solution are studied by means of differential inclusions and set-valued analysis. Secondly, by using the Hardy inequality, the matrix analysis, and the Lyapunov functional method, we get some criteria for achieving the globally exponential stability (GES). Finally, some examples are provided to verify the correctness of the theoretical results.

scholarly journals The research results of the competitive capacity of enterprises’ formation through marketing strategies

2021 ◽  
Vol 47 (1) ◽  
pp. 15-20
Author(s):  
I. Mosiichuk ◽  
K. Kashchuk
Keyword(s):  
Marketing Strategy ◽  
Product Line ◽  
Marketing Strategies ◽  
Matrix Analysis ◽  
Maximum Effect ◽  
Goods And Services ◽  
The Matrix ◽  
New Business ◽  
Marketing Analysis ◽  
Market Niche

The article points out that without a developed and functioning marketing strategy, an enterprise engaged in the production of any goods or services will not be able to withstand competition, to act effectively in accordance with market requirements. Creating a new business, merging and acquiring, developing a new market niche, narrowing or expanding the product line, choosing suppliers and partners – all these and many other decisions are made within the marketing strategy. Marketing itself is defined as the management of development, production and sale of goods and services demanded by society carries a systematic approach to solving problems of obtaining the maximum effect from sales with minimal and commercial risks. It is also stated that one of the most common methods is matrix analysis of the business portfolio. In order to assess the the company’s competitiveness, the author used the McKinsey matrix. The matrix built by the consulting firm for General Electric is considered in part. The characteristic and marketing alternatives of strategic zones on the given matrix are given. Formation peculiarities of competitive positions at researched enterprises in the kitchen market with the help of marketing strategies are revealed. As a result of the scientific researches problem’s analysis the author has come to a conclusion that both investigated firms-competitors are in a zone of selective development. While choosing a marketing strategy, it is necessary to focus on the main features of the marketing strategy, such as: long-term orientation; based on the results of strategic marketing analysis; a certain subordination in the hierarchy of enterprise strategies; the market orientation of activity (in relation to consumers and competitors) is defined, and also on need of the further scientific researches of a problem.

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