scholarly journals Algorithms for forming the coefficient matrix of a system of differential equations Chapman-Kolmogorov models of non-stationary service systems

2021 ◽  
Vol 2131 (3) ◽  
pp. 032012
Author(s):  
V P Bubnov ◽  
Sh Kh Sultonov
Keyword(s):  
Recursive Algorithm ◽  
Equation System ◽  
Coefficient Matrix ◽  
Service Systems ◽  
Optimal Structure ◽  
Sequential Algorithm ◽  
New Approach ◽  
Building Models ◽  
Software Implementations ◽  
Theoretical Foundations

Abstract The paper considers a new approach to building models of nonstationary service systems based on: the formation of all possible states of a nonstationary service system with a finite number of applications and rules of transition between them; the formation of the coefficient matrix of Chapman-Kolmogorov differential equation system; the numbering procedure for all states. A critical analysis is made of the algorithms for the formation of the coefficient matrix and the numbering procedure for all states: sequential, recursive and recursive with grouping. Its comparison with the recursive algorithm is given, as well as the optimal structure for storing the list of states for the sequential algorithm. Recommendations for the practical application of software implementations of the considered algorithms are discussed. Theoretical foundations for building and calculating models of nonstationary service systems have been developed. It is compared to the recursive algorithm. The optimal structure for storing the list of states for a sequential algorithm is given.

Community Crime Prevention: An Analysis of a Developing Strategy

1981 ◽  
Vol 27 (3) ◽  
pp. 405-421 ◽  
Author(s):  
Dan A. Lewis ◽  
Greta Salem
Keyword(s):  
Social Control ◽  
Crime Prevention ◽  
Theoretical Foundation ◽  
Developing Strategy ◽  
New Approach ◽  
The Social ◽  
Community Crime Prevention ◽  
Major Shift ◽  
Theoretical Foundations ◽  
New Strategies

Crime prevention strategies often aim at changing the motivations and predispositions of offenders. A new approach has developed within the last dec ade which focuses on changing the behavior of potential victims. The authors explore the theoretical foundations of the new strategies for reducing crime, commonly known as community crime prevention. They suggest that the in novation is a result of a major shift in the research paradigm for studying the effects of crime. The orientation underlying community crime prevention is labeled the "victimization perspective." Following a description of some limitations in that perspective, the authors offer, as an alternative, a perspective oriented toward social control. The social control perspective, which is based on the empirical findings of several recently completed research projects, offers a theoretical foundation both for a fresh approach to the study of the effects of crime and for the development of policies for community crime prevention.

scholarly journals Media Analisis Rangkaian Listrik Menggunakan Pendekatan Numerik Gauss-Jordan, Gauss-Seidel, dan Cramer

2020 ◽  
Vol 2 (1) ◽  
pp. 1-8
Author(s):  
Nurullaeli Nurullaeli
Keyword(s):  
Electric Current ◽  
Equation System ◽  
Coefficient Matrix ◽  
Closed Circuit ◽  
Graphic User Interface ◽  
Time Saving ◽  
Language Program ◽  
Seidel Method ◽  
Linear Equation System ◽  
Diagonally Dominant

The aim of this study is create an analysis media for calculating the electric current in a closed circuit with one or more loops.  Gauss-Jordan, Gauss-Seidel, and Cramer methods were used in this study. This media is packaged into Graphic User Interface (GUI) with matlab language program assisting. In this study, Linear Equation System (SPL) was obtained from kirchhoff current law and kirchhoff voltage law concepts.  Gauss-Seidel method is not always convergent for each formed SPL, because it can only be applied when coefficient matrix A was diagonally dominant. The application of this analysis media made the calculation of closed circuit electric current with one or more loops became accurate and time saving.

scholarly journals Protestant Ethics in Academia

2020 ◽  
Vol 5 (2) ◽  
pp. 7-18
Author(s):  
Anna Maria Kucharska
Keyword(s):  
Max Weber ◽  
Early Years ◽  
Academic Ethics ◽  
New Approach ◽  
Western Model ◽  
Polish Law ◽  
The Protestant Work Ethic ◽  
Religious Aspects ◽  
Work Ethos ◽  
Theoretical Foundations

Academic ethics has recently become an important issue in Poland. With changes in the Polish law on higher education a new approach to ethics of students and academics has been presented. As a PhD student and young researcher, I am personally interested in the introduced changes. This article seeks to examine professional academic ethics in terms of two chosen theories, that is, the Protestant work ethic of Max Weber and its adaptation to the academic environment by Robert K. Merton. I situate both theories in the  Polish context of shaping the academic ethos. In my deliberations I recall Dietrich Bonhoeffer’s works as fundamental for the Protestant work ethos values, which are honesty, reliability and diligence. Additionally I present their religious as well as non religious aspects. With such theoretical foundations, I attempt to evaluate the risks and violations in the ranks of Polish academics. The theoretical basis and the collected data enable me to put forward the claim that it is not feasible in Poland to follow the Western model of work ethics. Instead, it has to be built from scratch. To start this process, we need to consider the value of responsibility as a crucial category not only for the process of academic ethos formation, but also for everyday life from the early years.

scholarly journals Efficient hygrothermal wall transport models inside simulations of conditioned buildings

2020 ◽  
Vol 172 ◽  
pp. 04007
Author(s):  
Anne Paepcke ◽  
Andreas Nicolai
Keyword(s):  
Simulation Models ◽  
Equation System ◽  
Climatic Conditions ◽  
Strong Increase ◽  
Climatic Regions ◽  
Building Models ◽  
Grid Approach ◽  
Highly Nonlinear ◽  
Finite Volume Approach ◽  
The Impact

With regard to room comfort and potential moisture damage hygrothermal conditions inside a building are of high interest, especially in highly humid or dry climatic regions. In order to achieve satisfying climatic conditions not only thermal storage, but also moisture storage of walls needs to be taken into consideration. Dynamic effects of walls and the impact on thermal room climate require a detailed thermal wall simulation. In the simulation program NANDRAD a Finite Volume approach is used to discretized each building construction. The balance equation system is now extended with coupled moisture mass balance, both for zone air volumes and all construction elements. This leads to a duplication of system unknowns with highly nonlinear interactions between solution variables, resulting in strong increase of simulation time. In order to improve performance for larger simulation models, a mixed grid approach is evaluated. Hereby, a detailed grid is used for energy balances and coarser grid for moisture balances. In the article we discuss the procedure, evaluate the impact on accuracy of solution results, and discuss numerical problems. We show that the procedure indeed helps reducing the overall number of unknowns, which, however, appears to pay off only for large building models.

scholarly journals A New Approach for the Development of Services for Industrial Product-Service Systems

Procedia CIRP ◽  
2016 ◽  
Vol 47 ◽  
pp. 353-357 ◽  
Author(s):  
Dieter Haeberle ◽  
Saed Imran ◽  
Christian van Husen ◽  
Carsten Droll
Keyword(s):  
Service Systems ◽  
Industrial Product ◽  
New Approach ◽  
Product Service ◽  
Product Service Systems

scholarly journals Implementing Enterprise Systems in the Public Sector

2011 ◽  
pp. 1006-1010
Author(s):  
M. L. Ehrenhard
Keyword(s):  
Decision Making ◽  
Public Sector ◽  
Cost Management ◽  
Service Systems ◽  
Economic Viability ◽  
New Approach ◽  
The Public ◽  
Service Oriented ◽  
Efficiency Improve ◽  
Integrated Processes

Modernizing public administration requires a new approach to technology. You can no longer rely on rigid, monolithic service systems. You need technology that can increase efficiency, improve economic viability, enhance process transparency, and help you communicate with the public. You need a public sector solution that supports integrated processes, simplifies service-oriented administration and cost management, and distributes the information needed for judicious planning and decision making. (SAP, 2003)

scholarly journals A Fast Optimization Algorithm of FEM/BEM Simulation for Periodic Surface Acoustic Wave Structures

Information ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 90
Author(s):  
Honglang Li ◽  
Zixiao Lu ◽  
Yabing Ke ◽  
Yahui Tian ◽  
Wei Luo
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Toeplitz Matrix ◽  
Recursive Algorithm ◽  
Coefficient Matrix ◽  
Time Cost ◽  
Accurate Analysis ◽  
Periodic Surface ◽  
Speed Up ◽  
Element Method

The accurate analysis of periodic surface acoustic wave (SAW) structures by combined finite element method and boundary element method (FEM/BEM) is important for SAW design, especially in the extraction of couple-of-mode (COM) parameters. However, the time cost is very large. With the aim to accelerate the calculation of SAW FEM/BEM analysis, some optimization algorithms for the FEM and BEM calculation have been reported, while the optimization for the solution to the final FEM/BEM equations which is also with a large amount of calculation is hardly reported. In this paper, it was observed that the coefficient matrix of the final FEM/BEM equations for the periodic SAW structures was similar to a Toeplitz matrix. A fast algorithm based on the Trench recursive algorithm for the Toeplitz matrix inversion was proposed to speed up the solution of the final FEM/BEM equations. The result showed that both the time and memory cost of FEM/BEM was reduced furtherly.

scholarly journals An Exploratory Study of the Relationship between the Openness and Effectiveness of Strategic Planning

2019 ◽  
Vol 23 ◽  
Author(s):  
Alireza Amrollahi ◽  
Bruce Rowlands
Keyword(s):  
Information Technology ◽  
Strategic Planning ◽  
Exploratory Study ◽  
Qualitative Data ◽  
Exploratory Research ◽  
New Approach ◽  
Moderating Factors ◽  
The Relationship ◽  
Theoretical Foundations

This paper focuses on a new approach for facilitating the participation of stakeholders in a process of strategic planning known as open strategic planning (OSP). OSP is recognised through three characteristics: inclusiveness, transparency, and the use of information technology (IT) tools. Drawing on the theoretical foundations of OSP, the research explores moderating factors impacting the relationship between these characteristics and OSP effectiveness by referring to qualitative data obtained from two open strategic planning projects. A secondary aim was to examine how stakeholders interpret the effectiveness of OSP in an organisational setting. Results indicate various moderating factors (level of trust, IT literacy, and diversity of participants) impacted the relationship between the characteristics of OSP and strategic planning effectiveness. The study formulates eight propositions, each is discussed in relation to the existing literature on strategic planning effectiveness. This paper is significant as it is the first exploratory research linking openness and strategic planning outcomes.

Service Positioning through Structural Change

1987 ◽  
Vol 51 (1) ◽  
pp. 34-43 ◽  
Author(s):  
G. Lynn Shostack
Keyword(s):  
Structural Change ◽  
Process Design ◽  
Service Systems ◽  
Rational Basis ◽  
New Approach ◽  
Structural Process ◽  
Positioning Strategy

The basis of any service positioning strategy is the service itself, but marketing offers little guidance on how to craft service processes for positioning purposes. A new approach suggests that within service systems, structural process design can be used to “engineer” services on a more scientific, rational basis.

FM SCREENING BY THE LOCAL EXHAUSTIVE SEARCH, WITH HARDWARE ACCELERATION

2005 ◽  
Vol 16 (01) ◽  
pp. 89-104 ◽  
Author(s):  
YASUAKI ITO ◽  
KOJI NAKANO
Keyword(s):  
Hardware Acceleration ◽  
Binary Image ◽  
Exhaustive Search ◽  
New Approach ◽  
Binary Images ◽  
Projected Image ◽  
Continuous Tone ◽  
Software Implementations ◽  
Human Eyes ◽  
Speedup Factor

The main contribution of this paper is to show a new approach for FM screening which we call Local Exhaustive Search (LES) method, and to present ways to accelerate the computation using an FPGA. FM screening, as opposed to conventional AM screening, keeps unit dot size when converting an original gray-scale image into the binary image for printing. FM screening pays great attention to generate moiré-free binary images reproducing continuous-tone and fine details of original photographic images. Our basic approach for FM screening is to generate a binary image whose projected image onto human eyes is very close to the original image. The projected image is computed by applying a Gaussian filter to the binary image. LES performs an exhaustive search for each of the small square subimages in the binary image and replaces the subimage by the best binary pattern. The exhaustive search is repeated until no more improvement is possible. The experimental results show that LES produces a high quality and sharp binary image. We also implemented LES on an FPGA to accelerate the computation and achieved a speedup factor of up to 51 over the software implementations.

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