Unilibrary. Oliy ta'lim muassasalarining yagona elektron kutubxona axborot tizimi.

ELECTRIC MACHINERY FUNDAMENTALS

In the years since the first edition of Electric Machinery Fundamentals was published, there has been rapid advance in the development of larger and more sophisticated solid-state motor drive packages. The first edition of this book stated that de motors were the method of choice for demanding variable-speed applications. 11131 statement is no longer true today. Now, the system of choice for speed control applications is most often an ac induction motor with a solid-state motor drive. DC motors have been largely relegated to special-purpose applications where a de power source is readily available, such as in automotive electrical systems. The third edition orthe book was extensively restructured to reflect these changes. 1lle material on ac motors and generators is now covered in Chapters 4 through 7, before the material on dc machines. In addition, the dc machinery coverage was reduced compared to earlier editions. 1lle fourth edition continues with this same basic structure.

Chaos Theory Tamed

In this book, I assume no prior knowledge of chaos, on your part. Although chaos covers a broad range of topics, I try to discuss only the most important ones. I present them hierarchically. Introductory background perspective takes up the first two chapters. Then come seven chapters consisting of selected important material (an auxiliary toolkit) from various fields. Those chapters provide what I think is a good and necessary foundation—one that can be arduous and time consuming to get from other sources. Basic and simple chaosrelated concepts follow. They, in turn, are prerequisites for the slightly more advanced concepts that make up the later chapters. (That progression means, in turn, that some chapters are on a very simple level, others on a more advanced level.) In general, I try to present a plain-vanilla treatment, with emphasis on the idealized case of low-dimensional, noise-free chaos. That case is indispensable for an introduction. Some real-world data, in contrast, often require sophisticated and as-yet-developing methods of analysis. I don't discuss those techniques. The absence of high-level math of course doesn't mean that the reading is light entertainment. Although there's no way to avoid some specialized terminology, I define such terms in the text as well as in a Glossary. Besides, learning and using a new vocabulary (a new language) is fun and exciting. It opens up a new world.

Chaos and Structures in Geophysics and Astrophysics

Even though our limited perceptions provide us with only a brief glimpse of the Universe, the main lesson that we learn from our observation is that the world is complicated. Very complicated. Every part of the universe interacts with the other parts; the responses of each соmроnе are never proportional to the applied forces, and the feedbacks of one subsystem on another cannot be discarded. As a result, processes are unpredictable, and chaotic behavior in a common occurrence. Disorder and turbulence become rife. Yet from the chaotic background, coherent structures sometimes emerge, patterns form, and local order is generated. In the face of the wealth of phenomena, the myriad of details and the richness of quality and quantity, the quest for scientific understanding might seem to be a hopeless endeavour. Perhaps it is a fundamental human flaw that leads us to challenge this point of view. But challenge it we do. And at end of our struggles, perhaps we will find some comfort in judging how far we have come, and how infinitely further we could continue. At the very least, it may cure the crisis of mid-life. Thus, even if it may be pointless to try to describe what can happen in the universe, in these lecture notes, for reasons obscured to all but the fellows, we begin to do so.

FUQAROLIKISHLARINI SUDDA KO'RISHGA OID PROTSESSUAL HUJJAT NAMUNALARIGA SHARH

Qo'lingizdagi ushbu kitob bir muncha murakkab hisoblangan fuqarolik protsessual huquqini o'zlashtirishga mo'Ijallangan bo'lib, unda fuqarolik sud ishlarini yuritishga oid protsessual hujaatlarni bilib, to'g'ri, qonun talablari asosida yozishga ko'maklashadi. Kitobda protsessual hujjatlaming namunalarini keltirilishi bilan har bir turkum ishlarni o'zlashtirishni engillashtirish maqsadida sharh berilgan.

The Best Astronomical Events through 2020

There is a widespread impression that the scientific appreciation of the universe must be left wholly to those who have had years of formal training or who devote a large part of their free time to science as a hobby. It isn’t true, of course, and it’s less true now than ever before. Thanks to the Web, volunteers with little specific training are now assisting scientists in tasks as diverse as classifying galaxies, searching for lunar features, and monitoring bird nesting sites. But you don’t need expensive equipment, a steep investment of free time or even a broadband connection to start observing the heavens. All you need are your eyes. Everyone takes a moment to sky-gaze now and then – admiring the colors of a Sunset, pondering the Man in the Moon or playing connect-the-dots with bright stars. And while most of us are denied the awesome pleasure of a clear, dark country sky far from the tawny glow of city lights, we can still observe the solar system’s brightest members – the Sun, the Moon and five planets. Their ever-changing configurations fascinated and puzzled sky watchers for the first few thousand years of human civilization, a time when the human eye was the primary observing tool. Tracking their wanderings through the sky requires nothing more than good weather and some guidance on when and where to look.

АСКОРБАТ ХИТОЗАН BOMBYX MORI СИНТЕЗИ, ХОССАЛАРИ ВА ҚЎЛЛАНИШИ

Бугунги кунда жаҳонда хитозан ва унинг ҳосилаларини синтез қилиш ва уларнинг физик-кимёвий хоссаларини тадқиқ қилиш ҳамда улар асосида истиқболли препаратлар яратишга бағишланган илмий тадқиқотлар олиб борилмоқда. Бу борада хитозанни модификациялаб, сувда эрувчан ҳосилаларини синтез қилиш, тузилиши ва хоссаларини ўрганиш ҳамда унинг асосида ўсимликларнинг ўсиши ва ривожланишида яққол биофаоллик намоён қиладиган, комплекс таъсир қилувчи антимикроб ва иммуннофаоллик хоссаларига эга бўлган экологик хавфсиз, махсус хоссали препаратлар яратиш муҳим ахамият касб этади.

CANONICAL PROBLEMS IN SCATTERING AND POTENTIAL THEORY PART I: Canonical Structures in Potential Theory

Potential theory has its roots in the physical sciences and continues to find application in diverse areas including electrostatics and elasticity. From a mathematical point of view, the study of Laplace's equation has profoundly influenced the theory of partial differential equations and the development of functional analysis. Together with the wave operator and the diffusion operator, its study and application continue to dominate many areas of mathematics, physics, and engineering. Scattering of electromagnetic or acoustic waves is of widespread interest, because of the enormous number of technological applications developed in the last century, from imaging to telecommunications and radio astronomy. The advent of powerful computing resources has facilitated numerical modelling and simulation of many concrete problems in potential theory and scattering. The many methods developed and refined in the last three decades have had a significant impact in providing numerical solutions and insight into the important mechanisms in scattering and associated static problems. However, the accuracy of presentday purely numerical methods can be difficult to ascertain, particularly for objects of some complexity incorporating edges, re-entrant structures, and dielectrics. An example is the open metallic cavity with a dielectric inclusion. The study of closed bodies with smooth surfaces is rather more completely developed, from an analytical and numerical point of view, and computational algorithms have attained a good degree of accuracy and generality. In contradistinction to highly developed analysis for closed bodies of simple geometric shape which was the subject of Bowman, Senior, and Uslenghi's classic text on scattering [6] structures with edges, cavities, or inclusions have seemed, until now, intractable to analytical methods.

Феъл-атвор ва ёзув

Ўзингизни қизиқтирган саволларга қўлингиздаги ушбу китобни мутолаа қилаётиб батафсил жавоб оласиз. Шунингдек, графология соҳасига оид билимларингиз мустаҳкамланиб боради

Асаларичилик хўжаликларини бошқаришнинг ташкилий-иқтисодий механизмлари

Ҳозирда жаҳоннинг турли илмий марказлари ва тадқиқот муассасаларида асаларичилик хўжаликлари фаолиятини самарали бошқаришнинг кўплаб илмий йўналишлари бўйича тадқиқотлар олиб борилмоқда. Жумладан, асаларичилик хўжаликлари фаолиятини бошқариш механизмларини шакллантириш, бошқаришнинг ташкилий-иқтисодий механизмлари асосий ёндашувларини такомиллаштириш, нисбатан кичик миқёсдаги хўжаликлар ўртасида кооперация алоқаларини кенгайтириш, асаларичилик маҳсулотларининг диверсификация даражасини кучайтириш, мазкур хўжаликларда инновацион жараёнларни бошкариш самарадорлигини долзарб масалалардан ҳисобланади.

BIZNES KITOB

Фикрлаш устида ишлаш жараёнини тушуниш ва мияни муваффақиятга созлаш. Сиз ҳаётингизда ва бизнесда эришишни истаган нарсаларингизни яратишда визуализация ва медитация қандай ёрдам беришини билиб олиш.

BUILDING BLOCKS OF MATTER

The concepts and ideas of elementary particle physics are abstract, and they are typically expressed in the language of mathematics. However, the goal of elementary particle physics is very simple, and all the efforts of elementary particle physicists are directed toward that simple goal: to identify the basic building blocks of matter and to understand how they interact to produce the material world we observe. This encyclopedia contains articles intended for a broad audience of general readers and is designed to edify and give readers an appreciation for one of the most active and productive areas of physics throughout the twentieth century and to the present time. On the one hand, most of the articles have been written in ordinary language and provide a solid base in particle physics concepts and history for those who are new to the field. On the other hand, some topics in particle physics are difficult to express in everyday words, and in the articles on such topics, symbols appear and even an occasional equation. Even these articles, however, are written so that the reader with little physics background can capture a general sense of the topic covered.

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O'zbek tili ning imlo lug'ati.

Bu lug'at lotin yozuviga asoslangan o'zbek alifbosini joriy etish bo'yicha respublika davlat komissiyasining topshirig'i bilan yangi alifboga va yangi imlo qoidalariga mas holda tuzildi.

АНТИОКСИДАНТЛАРНИНГ ФАОЛЛИГИНИ ЎРГАНИШ АСОСИДА ВИНО ИШЛАБ ЧИҚАРИШ ТЕХНОЛОГИЯСИНИ ТАКОМИЛЛАШТИРИШ

Жаҳон амалиётида узок муддат сакланиб етиштириладиган маркали нордон ва юқори сифатли қувватланган вино ишлаб чикариш, оксидантлар таркиб, антиоксидант ҳимоя тизимини ўрганиш, вино технологиясининг мукаммал оксидланиш жараёнларини тадқиқ этишни оптималлаштириш ва моделлаштириш билан рақобатбардош ва экологик тоза табиий ичимликлар ишлаб чиқариш технологияларини такомиллаштириш борасида илмий тадкикотлар олиб борилмоқда.

Plastics materials

All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England WlP 9HE. Applications for the copyright holder’s written permission to reproduce any part of this publication should be addressed to the publisher.

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Stressed out at work? Are the pressures of the world getting you down? We guarantee relaxation with these complex Zen and anti-stress colouring pages for adults. The Harmony of Colour Series offers detailed images and patterns that are chosen by experts for their soothing properties. Be aware of the overall harmony of your colouring rather than focusing on each element individually. Try to balance the colors so that they are a reflection of your emotions of the moment. If the colours of your page are in harmony, then your mind will follow! Now... grab your pencils or texts and de-stress...