National Interim Primary Drinking Water Regulations PDF Download

Author: United States. Environmental Protection Agency. Office of Water Supply
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 172

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Author: Wen-tsun Wu
Publisher: World Scientific
ISBN: 9812791086
Category : Mathematics
Languages : en
Pages : 477

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Book Description
This important book presents all the major works of Professor Wen-Tsun Wu, a widely respected Chinese mathematician who has made great contributions in the fields of topology and computer mathematics throughout his research career. The book covers Wu's papers from 1948 to 2005 and provides a comprehensive overview of his major achievements in algebraic topology, computer mathematics, and history of ancient Chinese mathematics. In algebraic topology, he discovered Wu classes and Wu formulas for Stiefel-Whitney classes of sphere bundles or differential manifolds, established an imbedding theory with an application to the layout problem of integrated circuits, and introduced the I*-functors which turned the "rational homotopy theory" created by D Sullivan into algorithmic form. In computer mathematics, he discovered Wu's method of mechanical theorem proving by means of computers, which has been applied to prove and even discover on the computers hundreds of non-trivial theorems in various kinds of elementary and differential geometries. He also discovered a new effective method of polynomial equations solving, which has been used to solve problems raised from the fields of robotics and mechanisms, CAGD, computer vision, theoretic physics, celestial mechanics, and chemical equilibrium computation.

Author: Hugo Gernsback
Publisher:
ISBN: 9780914126119
Category :
Languages : en
Pages :

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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 228

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Since the complexity of police services does not lend itself to standardized performance measures, measurement techniques should be designed to inform more about what police do and how they affect their communities. This report reviews conventional police measurement practices and offers ways to improve the management value of performance information. Traditional performance measurement has emphasized the measurement of individual departments' effectiveness in preventing crime. This approach fails to consider the broad range of other police duties, citizens' expectations of police, and how police activities produce social change. Police can be evaluated in terms of efficiency, effectiveness, equity, and accountability, but citizens disagree about which of these performance criteria are the most important because community/police problems are too diverse. Instead of developing uniform, inflexible performance standards to apply globally to entire departments, evaluators should ask more detailed questions about common police processes and their results. Sketchy knowledge of how policing works now produces many hypotheses, but rarely standards worthy of emulation. Evaluators should develop better theories about police functions, obtain more reliable data, and control data collection costs with the aid of police managers so that measures inform departmental policymakers. Tables, diagrams, and 197 references are given. Appendixes include police services study data and a list of problem codes.

Author: Bart M. Haar Romeny
Publisher: Springer Science & Business Media
ISBN: 140208840X
Category : Computers
Languages : en
Pages : 470

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Book Description
Many approaches have been proposed to solve the problem of finding the optic flow field of an image sequence. Three major classes of optic flow computation techniques can discriminated (see for a good overview Beauchemin and Barron IBeauchemin19951): gradient based (or differential) methods; phase based (or frequency domain) methods; correlation based (or area) methods; feature point (or sparse data) tracking methods; In this chapter we compute the optic flow as a dense optic flow field with a multi scale differential method. The method, originally proposed by Florack and Nielsen [Florack1998a] is known as the Multiscale Optic Flow Constrain Equation (MOFCE). This is a scale space version of the well known computer vision implementation of the optic flow constraint equation, as originally proposed by Horn and Schunck [Horn1981]. This scale space variation, as usual, consists of the introduction of the aperture of the observation in the process. The application to stereo has been described by Maas et al. [Maas 1995a, Maas 1996a]. Of course, difficulties arise when structure emerges or disappears, such as with occlusion, cloud formation etc. Then knowledge is needed about the processes and objects involved. In this chapter we focus on the scale space approach to the local measurement of optic flow, as we may expect the visual front end to do. 17. 2 Motion detection with pairs of receptive fields As a biologically motivated start, we begin with discussing some neurophysiological findings in the visual system with respect to motion detection.

Author:
Publisher:
ISBN:
Category : Shock (Mechanics)
Languages : en
Pages : 748

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Author: Werner Goldsmith
Publisher: Courier Corporation
ISBN: 0486420043
Category : Technology & Engineering
Languages : en
Pages : 417

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Book Description
Carefully organized, skillfully written text examines stereomechanical impact; vibrational aspects of impact; contact phenomena produced by the impact of elastic bodies; dynamic processes involving plastic strains; results of impact experiments and dynamic properties of materials. Well-illustrated treatment presumes some knowledge of partial differential equations, operational calculus, and elasticity. 284 illustrations.

Author: Wu Wen-tsun
Publisher: Springer
ISBN: 9780792358350
Category : Mathematics
Languages : en
Pages : 420

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Book Description
This book is a collection of essays centred around the subject of mathematical mechanization. It tries to deal with mathematics in a constructive and algorithmic manner so that reasoning becomes mechanical, automated and less laborious. The book is divided into three parts. Part I concerns historical developments of mathematics mechanization, especially in ancient China. Part II describes the underlying principles of polynomial equation-solving, with polynomial coefficients in fields restricted to the case of characteristic 0. Based on the general principle, some methods of solving such arbitrary polynomial systems may be found. This part also goes back to classical Chinese mathematics as well as treating modern works in this field. Finally, Part III contains applications and examples. Audience: This volume will be of interest to research and applied mathematicians, computer scientists and historians in mathematics.

Author: World Bank
Publisher: World Bank Publications
ISBN:
Category : Business & Economics
Languages : en
Pages : 380

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Author: Ryan McNaught
Publisher: Allen & Unwin
ISBN: 1761064045
Category : Crafts & Hobbies
Languages : en
Pages : 349

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Book Description
A comprehensive A­-Z of creative builds and insider tips, from the star judge of the smash-hit TV show Lego® Masters Australia. 'I enjoyed reading this more than the real dictionary. Turns out there's an actual name for that little piece with a handle on it and the medium-sized circle-y one!' HAMISH BLAKE Welcome to the most comprehensive A­-Z of creative builds and insider tips ever, each carefully selected by Brickman himself. Discover ingenious ideas for your next build, from Aliens to Zebras and everything in between, curated by the star judge of the smash-hit TV show LEGO Masters Australia. Take your builds to the next level with expert pro-techniques, and become fluent in LEGO language with definitions of LEGO terms throughout. Whether you're an AFoL (adult fan of LEGO) or a KFoL (kid fan of LEGO), starting small or aiming high, The Bricktionary will fast become the indispensable companion to any LEGO collection. Design challenges * LEGO terms explained * Pro techniques * LEGO guessing game What are you going to build today?