scholarly journals Experimental hydrogen-fueled automotive engine design data-base project. Volume 2. Main technical report

1983 ◽  
Author(s):  
M.R. Swain ◽  
R.R. Jr. Adt ◽  
J.M. Pappas
Keyword(s):  
Data Base ◽  
Design Data ◽  
Automotive Engine ◽  
Engine Design ◽  
Technical Report

Hydrogen-Fueled Automotive Engine Experimental Testing to Provide an Initial Design-Data Base

1981 ◽  
Author(s):  
Michael R. Swain ◽  
John M. Pappas ◽  
Robert R. Adt ◽  
William J. D. Escher
Keyword(s):  
Data Base ◽  
Experimental Testing ◽  
Design Data ◽  
Automotive Engine ◽  
Initial Design

Development and Research of Management Information System Based on Multilayer Structure

2014 ◽  
Vol 687-691 ◽  
pp. 2347-2350
Author(s):  
Shuang Liu
Keyword(s):  
Information System ◽  
Data Base ◽  
Management Information System ◽  
Multilayer Structure ◽  
New Technology ◽  
Integrated Design ◽  
Management Information ◽  
Design Data ◽  
Sql Server 2000 ◽  
Whole Process

In the whole process of developing the management information system, people give priority to application of new technology and instrument such as the newly developed instrument Visual Studio from Microsoft. Connected with SQL Server 2000 data base, VB.NET, ASP.NET and ADO.NET technology are able to make the structure of softwares more reasonable, convenient and pragmatic, largely increasing the overall property of the software system. According to the steps of engineering design, this passage is to illustrate the entire system in an all-around way in terms of demand analysis, integrated design, data base design, safety design as well as report design. This passage is to illustrate a design process of a management information system based on C/S and B/S multilayer structure.

Managing the Mechanical Data Base

2009 ◽  
Author(s):  
Yuval Beiski
Keyword(s):  
Data Base ◽  
Mechanical Assembly ◽  
Design Data ◽  
Interface Control ◽  
Production Models ◽  
Mechanical Assemblies ◽  
Data Production ◽  
Current Design ◽  
Cad Models ◽  
Analysis Models

Developing complex systems usually involves many activities that are based on the integration of the designer CAD models: mechanical assemblies, analysis models (CFD, FEA, Thermal, etc.), interface control, tool and jig design data, production models, mass properties, ILS, documentation, and many more. Proper management of the integrated data base can lead to cost and time savings by parallel design, updated interfaces, and minimum integration faults; and can increase the reuse of parts and support the system engineering decisions. On the other hand, improper data managing can lead to major failures in the design process and during the mechanical assembly, which might result in loss of time, money and reputation. In order to assure efficient and accurate management of the mechanical data base, special training is required for designated personnel – the Mechanical Integrator (MI). The Mechanical Integrator ensures the implementation of appropriate working procedures by the sub-systems designers, that the current design is based on approved and released data, the use of generic parts and much more by managing an updated and robustly built data base. The Mechanical Integrator has a major roll in the project, but does he have the necessary knowledge and training? This paper presents the advantages of managing the mechanical data base; focusing on the techniques in use for building and monitoring it properly and explains the training program of the Mechanical Integrator, a person in charge over the mechanical data base and data flow.

Conducting Outcomes Research in a Community-based Practice Setting

1994 ◽  
Vol 8 (4) ◽  
pp. 193-200 ◽  
Author(s):  
Sanford R. Hoffman ◽  
Martin C. Mahoney ◽  
James F. Chmiel ◽  
Gerald D. Stinziano ◽  
Kevin N. Hoffman
Keyword(s):  
Data Base ◽  
Patient Outcomes ◽  
Medical Practice ◽  
Outcomes Research ◽  
Chronic Sinusitis ◽  
Research Effort ◽  
Base System ◽  
Clinical Practices ◽  
Community Based ◽  
Design Data

Although there is both a need and a desire to critically evaluate data from community-based clinical practices, many clinicians are inadequately prepared for this undertaking. This paper illustrates the process of establishing a computerized research data base in a community-based medical practice by highlighting issues of design, data collection, enrollment, and data management. In addition, a practical illustration of implementing such a data base system to perform community-based outcomes research among patients with chronic sinusitis is presented. Data bases established for community-based outcomes research can serve as a means for a single medical practice to examine patient outcomes or can serve as a component of a collaborative multi-site research effort.

Gas Turbine Off-Design Performance Adaptation Using a Genetic Algorithm

2006 ◽  
Author(s):  
E. Lo Gatto ◽  
Y. G. Li ◽  
P. Pilidis
Keyword(s):  
Genetic Algorithm ◽  
Gas Turbine ◽  
Performance Prediction ◽  
Engine Performance ◽  
Design Data ◽  
Adaptive Approach ◽  
Design Point ◽  
Design Performance ◽  
Engine Design ◽  
Performance Adaptation

Gas turbine gas path diagnostics is heavily dependent on performance simulation models accurate enough around a chosen diagnostic operating point, such as design operating point. With current technology, gas turbine engine performance can be predicted easily with thermodynamic models and computer codes together with basic engine design data and empirical component information. However the accuracy of the prediction is highly dependent on the quality of those engine design data and empirical component information such as component characteristic maps but such expensive information is normally exclusive property of engine manufacturers and only partially disclosed to engine users. Alternatively, estimated design data and assumed component information are used in the performance prediction. Yet, such assumed component information may not be the same as those of real engines and therefore poor off-design performance prediction may be produced. This paper presents an adaptive method to improve the accuracy of off-design performance prediction of engine models near engine design point or other points where detailed knowledge is available. A novel definition of off-design scaling factors for the modification of compressor maps is developed. A Genetic Algorithm is used to search the best set of scaling factors in order to adapt the predicted off-design engine performance to observed engine off-design performance. As the outcome of the procedure, new compressor maps are produced and more accurate prediction of off-design performance is provided. The proposed off-design performance adaptation procedure is applied to a model civil aero engine to test the effectiveness of the adaptive approach. The results show that the developed adaptive approach, if properly applied, has great potential to improve the accuracy of engine off-design performance prediction in the vicinity of engine design point although it does not guarantee the prediction accuracy in the whole range of off-design conditions. Therefore, such adaptive approach provides an alternative method in producing good engine performance models for gas turbine gas path diagnostic analysis.

scholarly journals Hull shape peculiarities of conventional and model icebreakers: analysis

2020 ◽  
Vol S-I (2) ◽  
pp. 63-67
Author(s):  
V. Platonov ◽  
◽  
V. Tryaskin ◽  
D. Isaeva ◽  
◽  
...  
Keyword(s):  
Data Base ◽  
Statistical Data ◽  
The Arctic ◽  
Performance Parameters ◽  
Design Data ◽  
Overall Design ◽  
Side Slope ◽  
Ice Loads ◽  
Russian Waters

This paper discusses hull shapes of conventional and modern icebreakers to analyse the peculiarities of their bows, sterns and parallel midbodies. It discusses main performance parameters, main dimensions and hull shape details of conventional and modern icebreakers. The data base generated in this study includes hull shape details for bow, parallel midbody and stern ice belt areas of conventional and modern icebreakers. This work also yielded mean statistical data making it possible to judge how waterline slope and side slope depend on the position of design section. This study summarizes and generalizes overall design data for the majority of icebreakers operating in freezing Russian waters, including the Arctic. Depending on hull shape, displacement and ice class, this paper identifies three representative groups of icebreakers. The results of this study were further used to analyse the loads on ice belt structures of icebreakers, as well as to develop a system of relationships intended to obtain design ice loads as per RS Rules.

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