Who Is Ivan? A Lesson in Eyewitness System-Variable Violations

1990 ◽  
Vol 35 (9) ◽  
pp. 876-877
Author(s):  
Gary L. Wells
Keyword(s):  
System Variable

Simulation and Visualization of Dynamic Systems Using MATLAB, Simulink, Simulink 3D Animation, and SolidWorks

2011 ◽  
Author(s):  
Loi Tran ◽  
Michael Hennessey ◽  
John Abraham
Keyword(s):  
Dynamic System ◽  
Quality Standard ◽  
Front Wheel ◽  
Geometric Constraints ◽  
Time Dependent ◽  
3D Animation ◽  
System Variable ◽  
Matlab Simulink ◽  
Simulink Model ◽  
Animation Software

There are many approaches to simulating and visualizing a dynamic system. Our focus is on developing/understanding and trading-off three different approaches that are relatively easy to implement with inexpensive, commonly available software using combinations of MATLAB, Simulink, Simulink 3D Animation, SolidWorks (basic), SolidWorks (Motion Manager) in addition to several common animation players such as Windows (Live) Movie Maker or the resident animation capability within MATLAB. The “SolidWorks Design Table” approach entails creating MATLAB/Simulink driven time-dependent assembly configurations, associated graphics files (e.g. JPG, TIFF) and then effectively “playing” them sequentially with animation software. The “SolidWorks Motor” approach utilizes SolidWorks’ Motion Manager capability (an add-on), whereby each spatially time-dependent geometric system variable is driven by a “motor” based on MATLAB/Simulink time-dependent data and an animation file can be generated from within Motion Manager. Lastly, in the “Simulink 3D Animation” approach, SolidWorks data is brought into the MATLAB environment and modified with V-Realm Builder (VRML Editor) supplied within the Simulink 3D Animation toolbox to define geometric constraints prior to inclusion as an animation VR Sink block within the Simulink model of the dynamic system. In each case, detailed procedures are provided. To exercise these three different approaches and permit comparisons, a benchmark problem was posed: parallel-parking of a four-wheeled vehicle possessing front wheel steering. Comparisons were then made and the recommended approach depends on such issues as the software background of the developer, the animation quality standard (e.g. framerate), and relative ease of implementation.

Acceleration Method for Evolutionary Optimization of Variable Cycle Engine

2020 ◽  
Author(s):  
Wang Hao ◽  
Li Zhou ◽  
Xiaobo Zhang ◽  
Zhanxue Wang
Keyword(s):  
Evolutionary Optimization ◽  
Dramatic Reduction ◽  
System Variable ◽  
Design Point ◽  
Engine Model ◽  
De Algorithm ◽  
Acceleration Method ◽  
Newton Raphson ◽  
Call Number ◽  
Convergent Solution

Abstract Variable cycle engine (VCE) is considered as one of the best options for advanced military or commercial supersonic propulsion system. Variable geometries enable the engine to adjust performance over the entire the flight envelope but add complexity to the engine. Evolutionary algorithms (EAs) have been widely used in the design of VCE. The initial guesses of the engine model are generally set using design point information during evolutionary optimization. However, the design point information is not suitable for all situations. Without suitable initial guesses, the Newton-Raphson solver will not be able to reach the solution quickly, or even get a convergent solution. In this paper, a new method is proposed to obtain suitable initial guesses of VCE model during evolutionary optimization. Differential evolution (DE) algorithm is used to verify our method through a series of optimization cases of a double bypass VCE. The result indicates that the method can significantly reduce the VCE model call number during evolutionary optimization, which means a dramatic reduction in terms of evolution time. And the robustness of the optimization is not affected by the method. The method can also be used in the evolutionary optimization of other engines.

scholarly journals PENGARUH APLIKASI SISTEM INFORMASI SIGILIB TERHADAP PENINGKATAN KINERJA PUSTAKAWAN DI PERPUSTAKAAN ISI SURAKARTA

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Mustofa Mustofa
Keyword(s):  
Information System ◽  
System Application ◽  
Strong Relationship ◽  
Research Subjects ◽  
System Variable ◽  
The Arts ◽  
Scale Range ◽  
High Level ◽  
The Relationship ◽  
Level 2

The purpose of this study was to determine the extent of the influence of the application of the information system "SIGILIB" on the improvement of librarian performance at the UPT Library of ISI Surakarta. This research is descriptive quantitative in nature with research subjects are all librarians of the ISI Surakarta library, totaling 12 people. The object of this research is the SIGILIB Information System Application. Based on the results of data analysis from research that: 1) the main average of the SIGILIB Information System Application variable is 3,818. This value is on a scale range of 3.40 - 4.20 which indicates that it is at a high level. 2) The Grand Mean of the Performance variable carried out by the librarian is 4.175. This value is in the scale range from 3.40 to 4.20 which indicates that the performance of librarians at the ISI Surakarta library is at a high level. Relationship between SIGILIB Information System and Librarian Performance has a very strong relationship, the nature of the relationship between SIGILIB Information System and Librarian Performance. Because the value found the influence of the SIGILIB Information System on Librarian Performance is 0.898, the value is between 0.80 - 1,000. The data processing results show that the SIGILIB Information System variable t-count is greater than the t-table (6,456> 2,228) with a probability (0,000) less than the significant level of 0.05, thus Ho is rejected and Ha is accepted, meaning that there is a significant effect. between the SIGILIB Information System veriabel on the performance of librarians at the Indonesian Institute of the Arts, Surakarta.

scholarly journals COST MANAGEMENT KNOWLEDGE SEBAGAI PEMODERASI HUBUNGAN ANTARA PARTISIPASI ANGGARAN DENGAN KINERJA APARATUR PEMERINTAH SULAWESI TENGAH

2019 ◽  
Vol 7 (2) ◽  
pp. 38-51
Author(s):  
Arif Widyatama
Keyword(s):  
Hypothesis Testing ◽  
Internal Control ◽  
Correlation Technique ◽  
Transfer Of Knowledge ◽  
Government Officials ◽  
System Variable ◽  
Significance Level ◽  
Minimum Requirement ◽  
Village Government ◽  
Central Sulawesi

The purpose of this study is to identify the process of transfer of knowledge available to village government officials in Central Sulawesi. Identify the obstacles that occur during the process of applying knowledge transfer to village government officials in Central Sulawesi. to village government officials in Central Sulawesi and Identify the relationship between the accountability of village government officials and the transfer of knowledge that occurred to village government officials in Central Sulawesi. This study uses explanatory research, a research site in Sigi Regency with a total sample of 61 samples using random sampling. The analysis technique used is Multiple Linear Regression, hypothesis testing using a significance level α = 0.05 with the help of the SPSS version 16.00 program. Test the validity of the corrected item-total correlation technique with a minimum requirement of r = 0.3. Reliability test using Cronbach Alpha coefficient with a coefficient α> 0.6. The results of the analysis of hypothesis testing of the Apparatus Competency variable have no significant effect on Accountability in the Management of ADD, while the Internal Control System variable has a positive influence on Accountability in the Management of ADD.

An implementation of geometric integration within Matlab

SIMULATION ◽  
2019 ◽  
Vol 95 (11) ◽  
pp. 1055-1067
Author(s):  
Guillaume Chauvon ◽  
Philippe Saucez ◽  
Alain Vande Wouwer
Keyword(s):  
Kepler Problem ◽  
Size Composition ◽  
Variable Step Size ◽  
Step Size ◽  
System Variable ◽  
Geometric Integrators ◽  
Long Run ◽  
Variable Step ◽  
Long Time ◽  
Better Than

Geometric integrators allow preservation of specific geometric properties of the exact flow of differential equation systems, such as energy, phase-space volume, and time-reversal symmetry, and are particularly reliable for long-run integration. In this study, variable step size composition methods and Gauss methods are implemented in Matlab library integrators, and are tested with several representative problems, including the Kepler problem, the outer solar system and a conservative Lotka–Volterra system. Variable step size integrators often perform better than their fixed step size counterparts and the numerical results show excellent long time preservation of the Hamiltonian in these examples.

Eyewitness certainty as a system variable.

2013 ◽  
pp. 161-177 ◽  
Author(s):  
Laura Smalarz ◽  
Gary L. Wells
Keyword(s):  
System Variable

Tourism in Ligurian Coastal System: Multy-Micro-Reality and Valences

2015 ◽  
Vol 744-746 ◽  
pp. 2232-2235
Author(s):  
Emanuela Nan
Keyword(s):  
Complex System ◽  
Complex Network ◽  
System Variable ◽  
Coastal System ◽  
Seasonal Migrations ◽  
The Mediterranean

Design and management of the different scenarios that define the Mediterranean coasts are not decisive today only the needs and desires of the inhabitants stable, but also, and increasingly, the identification and understanding of the perspectives and exchange of logic that are imposed by new needs and sensitivities of those flows and uses only temporarily and partially these spatiality.The various forms that tourism has acquired in recent years, in this context logic of flux, become redemption opportunities and new enhancement for micro-local worlds in the structuring of circuits and tourist fruition both spatially and temporally alternative to large seasonal migrations of mass tourism.The particular context of Ligurian coastal defined by a varied and complex network of micro-urban realities in a space severely limited, constrained between sea and mountains, makes this crock of settlements to serve as a system variable devices and multi-faceted , nodes of a complex system based on variously interconnected circuits, compared to which spatial and territories become a platform for the independent choice of the user may at any time not only to choose and change, but also to trace and define, in its own use, according to their own personal and intimate aspirations and interests and desires, through its act and feel, new geographies.

scholarly journals Variable Geometry Fuel Injector for Low Emissions Gas Turbines

1999 ◽  
Author(s):  
K. Smith ◽  
R. Steele ◽  
J. Rogers
Keyword(s):  
Gas Turbines ◽  
Field Tests ◽  
Flow Distribution ◽  
Operating Conditions ◽  
Variable Geometry ◽  
Fuel Injector ◽  
System Variable ◽  
Lean Premixed Combustion ◽  
Stable Operating ◽  
Lean Premixed

To extend the stable operating range of a lean premixed combustion system, variable geometry can be used to adjust the combustor air flow distribution as gas turbine operating conditions vary. This paper describes the design and preliminary testing of a lean premixed fuel injector that provides the variable geometry function. Test results from both rig and engine evaluations using natural gas are presented. The variable geometry injector has proven successful in the short-term testing conducted to date. Longer term field tests are planned to demonstrate durability.

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