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Evaluating baseball bat performance

L. V. Smith
2001 Sports Engineering  
Performance metrics that do not consider a bat's mass moment of inertia (MOI) were observed to underestimate the hitting performance of light weight bats.  ...  From these observations three recommendations concerning bat performance were made: (1) performance should be measured at relative speeds between the bat and ball that are representative of play conditions  ...  (mm) MOI (kg m 2 ) Ash 906 429 0.209 Aluminium 863 418 0.198 Sports Engineering (2001) 4, 205±214 · Ó 2001 Blackwell Science Ltd  ... 
doi:10.1046/j.1460-2687.2001.00087.x fatcat:x5dnyfc3zfbzlgcof2z5244osu

Automation support for software performance engineering

Hesham El-Sayed, Don Cameron, Murray Woodside
2001 Performance Evaluation Review  
To evaluate the performance of a software design one must create a model of the software, together with the execution platform and configuration.  ...  The procedure attempts to meet a soft-real-time performance specification, in which any number of scenarios have deadlines which must be realized some percentage of the time.  ...  Smith, in a series of works defining a discipline of software performance engineering, always assumes that the configuration is known [19] [23] .  ... 
doi:10.1145/384268.378799 fatcat:hxeq4bz64vd5fn24fv4er2f3q4

Measured HTTP performance and fun factors [chapter]

Joachim Charzinski
2001 Teletraffic science and engineering  
"Fun factors" have been previously introduced to describe the obtained performance with respect to the maximum possible performance on a scale of zero (no fun) to one (maximum fun).  ...  Active measurement studies have been conducted to assess the delay performance of HTTP in the Internet, having recognized latency as a main performance problem in Web access.  ...  In an extension to the rate based performance characterisation approaches in [11] , connection based performance measurements in [12] and single element based performance evaluations in [5] , this  ... 
doi:10.1016/s1388-3437(01)80192-x fatcat:qtacad7ixnd7ri4dnoeecup5oa

Performance Based Seismic Engineering [chapter]

Farzad Naeim, Hussain Bhatia, Roy M. Lobo
2001 The Seismic Design Handbook  
Performance based seismic engineering is the modern approach to earthquake resistant design.  ...  This chapter provides a basic understanding of the promises and limitations of performance based seismic engineering.  ...  INTRODUCTION The promise of performance-based seismic engineering (PBSE) is to produce structures with predictable seismic performance.  ... 
doi:10.1007/978-1-4615-1693-4_15 fatcat:5livtpdwcve4pot3juqkq7b7qy

On performance evaluation of Personal Computer in CFD

Akira MARUOKA, Hirokazu HIRANO
2001 Wind Engineers JAWE  
Methods in Applied Mechanics and Engineering , Vorticity contours Pressure contours Flow around a rectangular cylinder (B/D = 20) Memory storage CPU time Result of flow around a rectangular  ... 
doi:10.5359/jawe.2001.33 fatcat:xrpzlym6ybelzi3cakc5dwqhrq

Performance of Stirling Engines. Arranging Method of Experimental Results and Performance Prediction

Shoichi IWAMOTO, Koichi HIRATA, Fujio TODA
2001 JSME international journal. Series B, Fluids and thermal engineering  
We have developed five kinds of high-and low-temperature differential Stirling engines and their engine performance was investigated experimentally.  ...  We show an arranging method for the experimental results, and consider the performance of general Stirling engines.  ...  predict the engine performance in detail.  ... 
doi:10.1299/jsmeb.44.140 fatcat:cecq2ackgrfp5ifgm4y75q5e3e

Performance of buildings during the 2001 Bhuj earthquake

Jag Mohan Humar, David Lau, Jean-Robert Pierre
2001 Canadian journal of civil engineering (Print)  
The performance of buildings during the January 26, 2001, earthquake in the Kachchh region of the province of Gujarat in India is discussed.  ...  Résumé : La performance des bâtiments durant le séisme qui a touché la région de Kachchh dans la province de Gujurat en Inde le 26 janvier 2001 est examinée.  ...  Pandya, Executive Engineer; and Mr. S.V. Machhar, and Mr. S.M. Kachhadia, Superintending Engineers Power supply and Distribution located at Bhuj and Anjar, respectively. We are also thankful to Mr.  ... 
doi:10.1139/cjce-28-6-979 fatcat:2oogumzwlbg5xlunlbbeim3sfe

Hydraulic Performance of Coanda-Effect Screens

Tony L. Wahl
2001 Journal of Hydraulic Engineering  
A theoretically based computational model is presented for predicting the hydraulic performance of Coanda-effect screens.  ...  A model for the performance of complete Coanda-effect screen structures predicts the wetted length of screen required to accept a given flow, or the flow rate through the screen and the bypass flow over  ...  This paper is part of the Journal of Hydraulic Engineering, Vol. 127, No. 6, June, 2001. ᭧ASCE, ISSN 0733-9429/01/0006-0480-0488/$8.00 ϩ $.50 per page. Paper No. 22449.  ... 
doi:10.1061/(asce)0733-9429(2001)127:6(480) fatcat:pcdmcyx4krbdrm2jk76dbh2r6m

Performance of buildings during the 2001 Bhuj earthquake

Jag Mohan Humar, David Lau, Jean-Robert Pierre
2001 Canadian journal of civil engineering (Print)  
The performance of buildings during the January 26, 2001, earthquake in the Kachchh region of the province of Gujarat in India is discussed.  ...  Résumé : La performance des bâtiments durant le séisme qui a touché la région de Kachchh dans la province de Gujurat en Inde le 26 janvier 2001 est examinée.  ...  Pandya, Executive Engineer; and Mr. S.V. Machhar, and Mr. S.M. Kachhadia, Superintending Engineers Power supply and Distribution located at Bhuj and Anjar, respectively. We are also thankful to Mr.  ... 
doi:10.1139/l01-070 fatcat:jbzoqlyj4jcu7gksy5ecfp2nsi

PREDICTION OF VENTURI SCRUBBER PERFORMANCE

Mofreh H. Hamed, A. A. Abdel-Hamied
2001 ERJ. Engineering Research Journal  
The particle collection venturi performance is achieved at the expense of pressure drop through it.  ...  different forces and mechanisms of solid particles collection that affect this performance, THEORETICAL ANALYSIS The performance of venturi scrubber is specified in terms of collection efficiency and  ...  Venturi scrubber performance for a particular application may be characterized by collection efficiency and pressure drop.  ... 
doi:10.21608/erjm.2001.71047 fatcat:dyizwnqghzfnpk3zjhctbozede

Schedulability criterion and performance analysis of coordinated schedulers [chapter]

Chengzhi Li, Edward W. Knightly
2001 Teletraffic science and engineering  
Knightly, "Design, Analysis, and Implementation of DVSR: A Fair, High Performance Protocol for Packet Rings," IEEE/ACM Transactions on Networking, 12(1):85-102, February 2004. Y. Liu, S.  ...  Knightly, "Scalable Services via Egress Admission Control," in IEEE Transactions on Multimedia: Special Issue on Multimedia over IP. 3(1):69-81, March 2001. T. Wu and E.  ... 
doi:10.1016/s1388-3437(01)80166-9 fatcat:jy3ynw7ionc6pbbjzzzkw3b5xy

Evaluation of Roundabout Performance Using SIDRA

Virginia P. Sisiopiku, Heung-Un Oh
2001 Journal of transportation engineering  
This study provides recommendations to traffic engineers on the conditions under which roundabouts perform better than controlled intersections and, thus, should be considered as design alternatives.  ...  The performance of roundabouts compares well to the performance of signalized intersections with one-lane approaches and heavy traffic volumes.  ...  / JOURNAL OF TRANSPORTATION ENGINEERING / MARCH/APRIL 2001  ... 
doi:10.1061/(asce)0733-947x(2001)127:2(143) fatcat:rymqrdxq7nfbvoispukff5mcx4

Engine performance using vaporizing carburetor

Moh'd Abu-Qudais, K.R Asfar, Ramzi Al-Azzam
2001 Energy Conversion and Management  
The engine is tested to conduct performance tests and investigate the emission characteristics with the normal mode engine operation and with the aid of carburetor.  ...  This research is to investigate the performance of SI engine by using pre-heated fuel with carburetor aimed at making the air-fuel mixture more homogeneous, to reduce the fuel consumption and gives way  ...  Conclusions In the present work, the performance and emission characteristics of a four stroke single cylinder SI engine by using unheated fuel with the normal mode engine operation and by using pre-heated  ... 
doi:10.1016/s0196-8904(00)00098-4 fatcat:koo2f47omfewlf3sysq5mojhqm

Structural performance of sliplined watermain

Jack Q. Zhao, Lyne Daigle
2001 Canadian journal of civil engineering (Print)  
Although designs that neglect the structural contributions from the existing pipe and the grout are generally conservative, the performance of the rehabilitated pipe needs to be better understood for effective  ...  © 2001 NRC Canada  ...  Before they can take a proactive and integrated approach to maintaining acceptable levels of service of their underground watermains, municipal engineers need reliable tools to assess performance and predict  ... 
doi:10.1139/cjce-28-6-969 fatcat:f6lo4xejmngrrargxkymojvrku

Structural performance of sliplined watermain

Jack Q Zhao, Lyne Daigle
2001 Canadian journal of civil engineering (Print)  
Although designs that neglect the structural contributions from the existing pipe and the grout are generally conservative, the performance of the rehabilitated pipe needs to be better understood for effective  ...  © 2001 NRC Canada  ...  Before they can take a proactive and integrated approach to maintaining acceptable levels of service of their underground watermains, municipal engineers need reliable tools to assess performance and predict  ... 
doi:10.1139/l01-068 fatcat:da4dqj2xcbbz7gplejfpfdroti
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