...Guide to Meteorological Instruments and Methods of Observation WMO-No. 8 Guide to Meteorological Instruments and Methods of Observation WMO-No. 8 Seventh edition 2008 WMO-No. 8 © World Meteorological Organization, 2008 The right of publication in print, electronic and any other form and in any language is reserved by WMO. Short extracts from WMO publications may be reproduced without authorization, provided that the complete source is clearly indicated. Editorial correspondence and requests to publish, reproduce or translate this publication in part or in whole should be addressed to: Chairperson, Publications Board World Meteorological Organization (WMO) 7 bis, avenue de la Paix P.O. Box No. 2300 CH-1211 Geneva 2, Switzerland ISBN 978-92-63-10008-5 NOTE The designations employed in WMO publications and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of WMO concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries. Opinions expressed in WMO publications are those of the authors and do not necessarily reflect those of WMO. The mention of specific companies or products does not imply that they are endorsed or recommended by WMO in preference to others of a similar nature which are not mentioned or advertised. Tel.: +41 (0) 22 730 84 03 Fax: +41 (0) 22 730 80 40 E-mail: publications@wmo...
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...The Evolution of the Universe edited by David L. Alles Western Washington University e-mail: alles@biol.wwu.edu Last Updated 2013-7-14 Note: In PDF format most of the images in this web paper can be enlarged for greater detail. 1 “If being educated means having an informed sense of time and place, then it is essential for a person to be familiar with the scientific aspects of the universe and know something of its origin and structure.” Project 2061, American Association for the Advancement of Science ---------------------------"The effort to understand the universe is one of the very few things that lifts human life a little above the level of farce, and gives it some of the grace of tragedy."—Steven Weinberg Steven Weinberg is winner of the Nobel Prize in Physics in 1979, and author of the book "The First Three Minutes". 2 Introduction Science at the beginning of the twenty-first century can make some bold, yet simple observations: 1) the universe has evolved; 2) we are a result of that evolution. “We are the first generation of human beings to glimpse the sweep of cosmic history, from the universe's fiery origin in the Big Bang to the silent, stately flight of galaxies through the intergalactic night.” (National Research Council) Order in the Universe Cosmology is the study of the evolution of the universe from its first moments to the present. In cosmology the most fundamental question we can ask is: Does our universe have intelligible regularities that...
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...the stars seem "fixed" and that the sun moves relative to the stars. They also noticed five bight objects in the sky (Mercury, Mars, Venus, Jupiter, and Saturn) that seemed to move in a similar manner. They called Mars Har Decher - the Red One. Greeks called the planet Ares after their god of war, while the Romans called it Mars. Its sign is thought to be the shield and sword of Mars” (NASA, 2015). Mars is the fourth planet from the sun and referred to as the god of War. The planet probably got this name due to its red color; Mars is sometimes referred to as the Red Planet. Mars has been known since prehistoric times, and of course, it has been extensively studied with ground-based observatories. But even very large telescopes find Mars a difficult target, it's just too small. It is still a favorite of science fiction writers as the most favorable place in the Solar System (other than Earth!) for human habitation. “The first person to watch Mars with a telescope was Galileo Galilei, and in the century after him, astronomers discovered its polar ice caps. In the 19th and 20th centuries, researchers...
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...Spectroscopy CONTENTS Introduction Physical Quantities measured What Is Spectroscopy Nature of light The Electromagnetic Spectrum General Types of Spectra Continuous Spectra Emission spectra Absorption Spectra Types of Spectroscopy How Spectrometer work? Types of Spectroscopy Examples of Spectroscopy in Astronomy Probing the Formation of Stars in Colliding Galaxies in the universe. Uncovering the mystery of quasar Spectroscopy in Astronomy camp Stars like our own Sun Bibliography 1. Introduction Spectroscopy Spectroscopy is the study of matter and its properties by investigating light, sound, or particles that are emitted, absorbed or scattered by the matter under investigation. Spectroscopy may also be defined as the study of the interaction between light and matter. Historically, spectroscopy referred to a branch of science in which visible light was used for theoretical studies on the structure of matter and for qualitative and quantitative analyses. Recently, however, the definition has broadened as new techniques have been developed that utilize not only visible light, but many other forms of electromagnetic and non-electromagnetic radiation: microwaves, radiowaves, x-rays, electrons, phonons (sound waves) and others. Impedance spectroscopy is a study of frequency response in alternating current. Spectroscopy is often used in physical and analytical chemistry for the identification of substances through the spectrum emitted from them or absorbed...
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...BASIC INSTRUMENTATION MEASURING DEVICES AND BASIC PID CONTROL Table of Contents Section 1 - OBJECTIVES 3 Section 2 - INSTRUMENTATION EQUIPMENT 7 2.0 INTRODUCTION 7 2.1 PRESSURE MEASUREMENT 7 2.1.1 General Theory 7 2.1.2 Pressure Scales 7 2.1.3 Pressure Measurement 8 2.1.4 Common Pressure Detectors 9 2.1.5 Differential Pressure Transmitters 11 2.1.6 Strain Gauges 13 2.1.7 Capacitance Capsule 14 2.1.8 Impact of Operating Environment 15 2.1.9 Failures and Abnormalities 16 2.2 FLOW MEASUREMENT 18 2.2.1 Flow Detectors 18 2.2.2 Square Root Extractor 25 2.2.3 Density Compensating Flow Detectors 29 2.2.4 Flow Measurement Errors 31 2.3 LEVEL MEASUREMENT 33 2.3.1 Level Measurement Basics 33 2.3.2 Three Valve Manifold 34 2.3.3 Open Tank Measurement 36 2.3.4 Closed Tank Measurement 36 2.3.5 Bubbler Level Measurement System 42 2.3.6 Effect of Temperature on Level Measurement 44 2.3.7 Effect of Pressure on Level Measurement 47 2.3.8 Level Measurement System Errors 47 2.4 TEMPERATURE MEASUREMENT 49 2.4.1 Resistance Temperature Detector (RTD) 49 2.4.2 Thermocouple (T/C) 52 2.4.3 Thermal Wells 54 2.4.4 Thermostats 55 2.5 NEUTRON FLUX MEASUREMENT 59 2.5.1 Neutron Flux Detection 59 2.5.2 Neutron Detection Methods 60 2.5.3 Start-up (sub-critical) Instrumentation 61 2.5.4 Fission neutron...
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...www.VOASpecialEnglish.com Word Book A list of words used in Special English programs on radio, television and the Internet EDITION SpecialEnglish Word Book A list of words used in Special English programs on radio, television and the Internet Voice of America Washington, D.C. 20237 www.VOASpecialEnglish.com EDITION 4 AB D FG I K L N PQ S UV YZ 5 Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Parts of Speech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Word List & Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Special Words & Information . . . . . . . . . . . . . . . . . . . . .111 Common Prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . .113 Common Expressions . . . . . . . . . . . . . . . . . . . . . . . .115 Numbers, Days, Months . . . . . . . . . . . . . . . . . . . . .116 Chemical Elements . . . . . . . . . . . . . . . . . . . . . . . . . .119 Organs of the Body . . . . . . . . . . . . . . . . . . . . . . . . . .121 Computer Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . .122 Business Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124 United States Branches of Government . . . . . . . . . .126 Map of the United States . . . . . . . . . . . . . . . . . . . . .128 Map of the World . . . . . . . . . . . . . . . . . . . . . . . . . . .130 Presidents of the United States . . . . . . . . . . . . . . . .132 www...
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...Global Positioning System and Tracking 2nd Semester B.S. (SE) 2014 Submitted By: Name: Hafsa Ameer Enrolment number: 2014/comp/BS(S.E)/16869 Submitted to: Hina Qaiser Khan 14 -November,2014 Department of Computer Science and Information Technology Jinnah University for Women 5-C Nazimabad, Karachi 74600 ABSTRACT Where am I? Where am I going? Where are you? What is the best way to get there? When will I get there? In this paper GPS technology can answer all these questions. GPS satellite can show you exact position on the earth any time, in any weather, no matter where you are. GPS technology has made an impact on navigation and positioning needs with the use of satellites and ground stations the ability to track aircrafts, cars, cell phones, boats and even individuals has become a reality. A system of satellites, receivers that is able to determine the latitude and longitude of a receiver on Earth by calculating the distance. System (GPS) is a worldwide radio-navigation system formed from constellation of 24 satellites. Navigation system is made for aircraft, ships, ground vehicles, and for hand carrying by individuals. Surveying, telecommunications facilities, and mapping, tracking etc is another use of GPS. Also in this paper feasibility is, to introduce tracking system in Jinnah University, that monitor students’progress until they have seen an academic advising resources and helps students graduate on time. TABLE OF CONTENT...
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...under three scenarios – a best case, most likely case and worse case – and then extend the discussion to look at scenario analysis more generally. We will move on to examine the use of decision trees, a more complete approach to dealing with discrete risk. We will close the chapter by evaluating Monte Carlo simulations, the most complete approach of assessing risk across the spectrum. Scenario Analysis The expected cash flows that we use to value risky assets can be estimated in one or two ways. They can represent a probability-weighted average of cash flows under all possible scenarios or they can be the cash flows under the most likely scenario. While the former is the more precise measure, it is seldom used simply because it requires far more information to compile. In both cases, there are other scenarios where the cash flows will be different from expectations; higher than expected in some and lower than...
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...damage and possibly even to organizational failure. Reality shows us (in some examples illustrated on page 3-4) the importance of having good management control systems (MCS). However, adding to much control does not always lead to better control. Some MCS’s in common use often stifle initiative, creativity, and innovation. I.e. in organisations with a lot of bureaucracy a culture with a lack of responsibility can occur and due to the slow, bureaucratic processes people can find ‘creative’ ways to speed up this process. That good MCS’s are important is widely accepted, but within the field of MCS’s there are different views. An old, narrow view of a MCS is that of a ‘cybernetic’ system involving a single feedback loop. You can compare measuring performance with a thermostat; They measure the temperature, compare those measurements with the desired standard, and, if necessary, take a corrective action (turn on or off). This book, however, takes a broader view. It recognizes that may management controls in common use, such as direct supervision, employee-hiring standards and codes of conduct do not focus on measured performance. The focus instead on encouraging, enabling or, sometimes, forcing employees to act in the organization’s best interest. MCS can rather be proactive (to prevent) than reactive. The primary function of management control is to influence behaviours in desirable ways. The benefit is the increased probability that the organization’s objectives will be achieved...
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...Turing, A.M. (1950). Computing machinery and intelligence. Mind, 59, 433-460. COMPUTING MACHINERY AND INTELLIGENCE By A. M. Turing 1. The Imitation Game I propose to consider the question, "Can machines think?" This should begin with definitions of the meaning of the terms "machine" and "think." The definitions might be framed so as to reflect so far as possible the normal use of the words, but this attitude is dangerous, If the meaning of the words "machine" and "think" are to be found by examining how they are commonly used it is difficult to escape the conclusion that the meaning and the answer to the question, "Can machines think?" is to be sought in a statistical survey such as a Gallup poll. But this is absurd. Instead of attempting such a definition I shall replace the question by another, which is closely related to it and is expressed in relatively unambiguous words. The new form of the problem can be described in terms of a game which we call the 'imitation game." It is played with three people, a man (A), a woman (B), and an interrogator (C) who may be of either sex. The interrogator stays in a room apart front the other two. The object of the game for the interrogator is to determine which of the other two is the man and which is the woman. He knows them by labels X and Y, and at the end of the game he says either "X is A and Y is B" or "X is B and Y is A." The interrogator is allowed to put questions to A and B thus: C: Will X please tell me the length...
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...Earthquake From Wikipedia, the free encyclopedia This article is about the natural seismic phenomenon. For other uses, see Earthquake (disambiguation). [pic] An earthquake (also known as a quake, tremor, temblor or seismic activity) is the result of a sudden release of energy in theEarth's crust that creates seismic waves. Earthquakes are measured with a seismometer; a device which also records is known as aseismograph. The moment magnitude (or the related and mostly obsolete Richter magnitude) of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale. At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquakeepicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity. In its most generic sense, the word earthquake is used to describe any seismic event — whether a natural phenomenon or an event caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by volcanic activity, landslides, mine blasts, and nuclear experiments. An earthquake's point of initial rupture is called its focus orhypocenter. The term epicenter refers to the point at...
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...Introduction to CreditMetrics™ The benchmark for understanding credit risk New York April 2, 1997 • • • A value-at-risk (VaR) framework applicable to all institutions worldwide that carry credit risk in the course of their business. A full portfolio view addressing credit event correlations which can identify the costs of over concentration and benefits of diversification in a mark-to-market framework. Results that drive: investment decisions, risk-mitigating actions, consistent risk-based credit limits, and rational risk-based capital allocations. J.P. Morgan Co-sponsors: Bank of America Bank of Montreal BZW Deutsche Morgan Grenfell KMV Corporation Swiss Bank Corporation Union Bank of Switzerland Table of Contents 1. Introduction to CreditMetrics 2. The case for a portfolio approach to credit risk 3. The challenges of estimating portfolio credit risk 4. An overview of CreditMetrics methodology 5. Practical applications 3 9 12 14 30 Introduction to CreditMetrics Copyright © 1997 J.P. Morgan & Co. Incorporated. All rights reserved. J.P. Morgan Securities, Inc., member SIPC. J.P. Morgan is the marketing name for J.P. Morgan & Co. Incorporated and its subsidiaries worldwide. CreditMetrics™, CreditManager™, FourFifteen™, and RiskMetrics™ are trademarks of J.P. Morgan in the United States and in other countries. They are written with the symbol ™ on their first occurance in the publication, and as CreditMetrics, CreditManager, FourFifteen or RiskMetrics thereafter...
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...and design specifications. The Panama Canal’s third lane expansion involves building enormous new locks that will accommodate the new generation of shipping vessels that are about three times the size of “Panamax” ships constructed to fit precisely in the existing canal’s lock chambers. According to the vessel glossary of the World Trade Ref, the Panamax is defined as: “An ocean-going cargo vessel of the maximum size possible to pass through the locks of the Panama Canal, which are 1000ft long by 110ft wide and 85ft deep. These vessels are typically of 50,000 to 80,000 dwt, 965ft (290m) in length; 106ft. (32.3m) beam; and 39.5ft (12.04m) draft.” The new locks on the Atlantic and Pacific entrances will consist of a trio of chambers measuring 1400ft (427m) long, 180ft (55m) wide, and 59ft (18m) deep. When completed, this construction will expand the capacity of the current fully-booked shipping route from Asia that, for years, sent cargo that couldn’t fit through the existing canal to the west coast where other ports have been overburdened; after landing in these ports, the freight had to make an expensive journey by road and rail over land. The newly...
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...A. M. Turing (1950) Computing Machinery and Intelligence. Mind 49: 433-460. COMPUTING MACHINERY AND INTELLIGENCE By A. M. Turing 1. The Imitation Game I propose to consider the question, "Can machines think?" This should begin with definitions of the meaning of the terms "machine" and "think." The definitions might be framed so as to reflect so far as possible the normal use of the words, but this attitude is dangerous, If the meaning of the words "machine" and "think" are to be found by examining how they are commonly used it is difficult to escape the conclusion that the meaning and the answer to the question, "Can machines think?" is to be sought in a statistical survey such as a Gallup poll. But this is absurd. Instead of attempting such a definition I shall replace the question by another, which is closely related to it and is expressed in relatively unambiguous words. The new form of the problem can be described in terms of a game which we call the 'imitation game." It is played with three people, a man (A), a woman (B), and an interrogator (C) who may be of either sex. The interrogator stays in a room apart front the other two. The object of the game for the interrogator is to determine which of the other two is the man and which is the woman. He knows them by labels X and Y, and at the end of the game he says either "X is A and Y is B" or "X is B and Y is A." The interrogator is allowed to put questions to A and B thus: C: Will X please tell me the length of his or...
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...Costello) Titanic Cat (with Matt Costello) The Grand Design The Grand Design The Grand Design The Grand Design Copyright © 2010 by Stephen W. Hawking and Leonard Mlodinow Original art copyright © 2010 by Peter Bollinger All rights reserved. Published in the United States by Bantam Books, an imprint of The Random House Publishing Group, a division of Random House, Inc., New York. Cartoons by Sidney Harris, copyright © Sciencecartoonsplus.com BANTAM BOOKS and the rooster colophon are registered trademarks of Random House, Inc. eISBN: 978-0-553-90707-0 www.bantamdell.com v3.0 The Grand Design The Grand Design The Grand Design The Grand Design E EACH EXIST FOR BUT A SHORT TIME, and in that time explore but a small part of the whole universe. But humans are a curious species. We wonder, we seek answers. Living in this vast world that is by turns kind and cruel, and gazing at the immense heavens above, people have always asked a multitude of questions: How can we understand the world in which we find ourselves? How does the universe behave? What is the nature of reality? Where did all this come from? Did the universe need a creator? Most of us do not spend most of our time worrying about these questions, but almost all of us...
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