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

The Foundations Of Celestial Mechanics

Celestial mechanics is a course that is fast disappearing from the curricula of astronomy departments across the country. The pressure to present the new and exciting discoveries of the past quarter century has led to the demise of a number of traditional subjects. In point of fact, very few astronomers are involved in traditional celestial mechanics. Indeed, I doubt if many could determine the orbital elements of a passing comet and predict its future path based on three positional measurements without a good deal of study. This was a classical problem in celestial mechanics at the turn of this century and any astronomer worth his degree would have had little difficulty solving it. Times, as well as disciplines, change and I would be among the first to recommend the deletion from the college curriculum of the traditional course in celestial mechanics such as the one I had twenty five years ago.

ЎЗБЕКИСТОН РЕСПУБЛИКАСИДА БЮДЖЕТЛАРАРО МУНОСАБАТЛАРНИ ТАКОМИЛЛАШТИРИШ

Ҳозирда жаҳоннинг етакчи илмий марказлари ва илмий-тадқиқот муассасаларида бюджетлараро муносабатларни такомиллаштиришнинг қуйидаги муаммолари ва илмий йўналишлари тадқиқ этилмоқда: бюджет майдони ичида харажатлар эҳтиёжларини ва тенглаштириш дастурларининг асосий жиҳатларини аниқлашда мавжуд инновацион усуллар ва услубий ёндашувларни ишлаб чиқишни такомиллаштириш, «харажатларни бошқариш» парадигмасидан «натижаларни бошқариш» парадигмасига ўтиш (натижага йўналтирилган бюджетлаштириш), давлат молиясини бошқариш самарадорлигини ошириш мақсадида иқтисодий-математик моделлаштириш ва прогнозлашнинг кенг кўламли усулларини қўллаш, давлат бюджетлари учун интеграциялашган ахборот муҳитини яратиш учун замонавий рақамли технологияларни жорий этиш ва ҳоказо.

The First Three Minutes

This book grew out of a talk I gave at the dedication of the Undergraduate Science Center at Harvard in November 1973. Erwin Glikes, president and publisher of Basic Books, heard of this talk from a mutual friend, Daniel Bell, and urged me to turn it into a book. At first I was not enthusiastic about the idea. Although I have done small bits of research in cosmology from time to time, my work has been much more concerned with the physics of the very small, the theory of elementary particles. Also, elementary particle physics has been extraordinarily lively in the last few years, and I had been spending too much time away from it, writing non-technical articles for various magazines. I wanted very much to return full time to my natural habitat, the Physical Review.

The Finite Element Method

This volume appears for the first time in a separate form. Though part of it has been updated from the second volume of the fourth edition, in the main it is an entirely new work. Its objective is to separate the fluid mechanics formulations and applications from those of solid mechanics and thus perhaps to reach a different interest group. Though the introduction to the finite element method contained in the first volume (the basis) is general, in it we have used, in the main, examples of elastic solids. Only a few applications to areas such as heat conduction, porous media flow and potential field problems have been presented. The reason for this is that all such problems are self-adjoint and that for such self-adjoint problems Galerkin procedures are optimal. For convection dominated problems the Galerkin process is no longer optimal and it is here that most of the fluid mechanics problems lie. The present volume is devoted entirely to fluid mechanics and uses in the main the methods introduced in Volume 1. However, it then enlarges these to deal with the non-self-adjoint problems of convection which are essential to fluid mechanics problems.

Finite Difference Time Domain Method for Electromagnetics

The finite difference time domain (FDTD) approach is rapidly becoming one of the most widely used computational methods in electromagnetics. There are several reasons for this, including the increased availability of low cost but powerful computers, and increasing interest in electromagnetic interactions with complicated geometries, which include penetrable dielectric and/or magnetic materials. Just as important perhaps is the extreme simplicity of the method. The fundamentals of FDTD can be grasped easily by undergraduate students, more easily than traditional frequency-domain approaches to electromagnetics. Yet FDTD is capable of computing electromagnetic interactions for problem geometries that are extremely difficult to analyze by other methods. It is this combination of simplicity and power that makes FDTD such a popular method.

The Fabric of Cosmos

Space and time capture the imagination like no other scientific subject. For good reason. They form the arena of reality, the very fabric of the cosmos. Our entire existence-everything we do, think, and experiencetakes place in some region of space during some interval of time. Yet science is still struggling to understand what space and time actually are. Are they real physical entities or simply useful ideas? If they're real, are they fundamental, or do they emerge from more basic constituents? What does it mean for space to be empty? Does time have a beginning? Does it have an arrow, flowing inexorabiy from past to future, as common experience would indicate? Can we manipulate space and time? In this book, we follow three hundred years of passionate sc~entific investigation seeking answers, or at least glimpses of answers, to such basic but deep questions about the nature of the universe.

ЎЗБEКИCТOН РECПУБЛИКACИДA ДAВЛAТ МOЛИЯ ТИЗИМИНИ ИCЛOҲ ҚИЛИШНИНГ ИCТИҚБOЛЛИ ЙЎНAЛИШЛAРИ

Ўзбекистонда бюджет ва солиқ сиёсати соҳасида олиб борилаётган ислоҳотлар давлат бюджетининг очиқлиги ва шаффофлигини таъминлаш, бюджетни шакллантириш, қабул қилиш ва ижро этиш, унинг назоратини амалга ошириш ҳамда мониторингини юритиш, шунингдек, соҳага жаҳон стандартлари тизимларини жорий этиш, жамоатчиликни бюджет жараёнига жалб қилиш даражасини оширишга қаратилган. «Бюджет ҳисобидан маблағ ажратиладиган хар кандай дастур ёки лойиҳанинг сифат ва миқдор кўрсаткичларидан иборат, натижага йўналтирилган индикаторлари бўлиши керак».

THE EVOLUTION OF PHYSICS

It is difficult to begin by answering these questions clearly and convincingly. This would be much easier, though quite superfluous, at the end of the book. We find it simpler to say just what this book does not intend to be. We have not written a textbook of physics. Here is no systematic course in elementary physical facts and theories. Our intention was rather to sketch in broad outline the attempts of the human mind to find a connection between the world of ideas and the world of phenomena. We have tried to show the active forces which compel science to invent ideas corresponding to the reality of our world. But our representation had to be simple. Through the maze of facts and concepts we had to choose some highway which seemed to us most characteristic and significant. Facts and theories not reached by this road had to be omitted. We were forced, by our general aim, to make a definite choice of facts and ideas. The importance of a problem should not be judged by the number of pages devoted to it. Some essential lines of thought have been left out, not because they seemed to us unimportant, but because they do not lie along the road we have chosen.

ЎЗБЕК КАСБИЙ МУСИҚАСИДА НАЗИРА АНЪАНАЛАРИ

Миллий кадриятлар шиддат билан қайта тикланаётган бугунги кунда мустақил Ватанимизда аждодлардан мерос бўлиб келаётган ва ҳозирда яратилаётган мумтоз наволарни кенг тарғиб қилиш учун қулай фурсат юзага келди. Мақом ва мақом услубидаги асарларии энг илғор илмий методлар асосида тадқиқ қилиш ва олинган натижаларни амалиётга самарали жорий этишга қаратилган саъй-ҳаракатлар эса Ўзбекистон Республикасининг маданият ва санъат сохаларини ривожлантириш борасида алоҳида мавқеъ касб этади. "Агар биз санъатни, маданиятни кўтармоқчи бўлсак, аввало мумтоз мақом санъатини кўтаришимиз керак. Маком оханглари, мақом рухи ва фалсафаси ҳар бир инсон қалбидан, аввало, униб-ўсиб келаётган ёш авлодимизнинг онги ва юрагидан чуқур жой олиши учун бор имкониятларимизни сафарбар этишимиз зарур".

The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory Brian Greene

During the last thirty years of his life, Albert Einstein sought relentlessly for a so-called unified field theory—a theory capable of describing nature's forces within a single, all-encompassing, coherent framework. Einstein was not motivated by the things we often associate with scientific undertakings, such as trying to explain this or that piece of experimental data. Instead, he was driven by a passionate belief that the deepest understanding of the universe would reveal its truest wonder: the simplicity and power of the principles on which it is based. Einstein wanted to illuminate the workings of the universe with a clarity never before achieved, allowing us all to stand in awe of its sheer beauty and elegance.

The Complete Book of Spaceflight

Abook of this size and scope isn’t a one-man enterprise. Dozens of individuals at space agencies, government laboratories, military bases, aerospace companies, and universities generously provided information and illustrations. At John Wiley, I’m particulary grateful to my editor, Jeff Golick, and to Marcia Samuels, senior managing editor, for their excellent suggestions and attention detail. Any mistakes and inaccuracies that remain are my responsibility alone. As always, my thanks go to my very special agent, Patricia van der Leun, for finding the book a home and providing support along the way. Finally and foremost, my love and gratitude go to my family—my parents, my wife, Jill, and my now-grownup children, LoriAn and Jeff—for making it all possible.

The Art Of Electronics

The transistor is our most important example of an "active" component, a device that can amplify, producing an output signal with more power in it than the input signal. The additional power comes from an external source of power (the power supply, to be exact). Note that voltage amplification isn't what matters, since, for example, a step-up transformer, a "passive" component just like a resistor or capacitor, has voltage gain but no power gain. Devices with power gain are distinguishable by their ability to make oscillators, by feeding some output signal back into the input. It is interesting to note that the property of power amplification seemed very important to the inventors of the transistor. Almost the 'first thing they did to convince themselves that they had really invented something was to power a loudspeaker from a transistor, observing that the output signal sounded louder than the input signal.

Буюк ва муқаддассан, мустақил Ватан

Ушбу илмий-оммабоп рисола Ўзбекистон Республикаси Президентининг 2011 йил 6 апрелдаги " Ўзбекистон Республикаси Давлвт мустақиллигининг йигирма йиллигини нишонлашга тайёргарлик кўриш ва уни ўтказиш тўғрисида" ги ПҚ-1516-сонли Қарорида баён этилган фикр ва ғояларни ватандошларимиз, ҳусусан ёш авлод қалби ва онгига сингдириш, аҳоли ўртасида мустақиллик шарофати билан амалга оширилган эзгу ишлар, сайи хароакатлар, ижтимоий-иқтисодий, ташкилий-хуқуқий, маънавий-маърифий соҳаларда эришилган ютуқларни тарғиб этишга қаратилган.

Инсон экологияси

Ушбу рисолада инсон тирикликнинг гултожи эканлиги, ҳар бир одам бир олам, бу ўтар дунё, инсоннинг эволюциядаги ўрни, оламда одамнинг пайдо бўлиши, ривожланиши, ақл-идроки, кўриш, эшитиш, фикрлаш, куч-қудрати, нафас олишни, модда алмашиниши, сабр-тоқати, инсоннинг руҳий дунёси, тириклиги, инсоннинг пайдо бўлишига оид фикрлар баён этилган.

Не могу остановиться: Откуда берутся навязчивые состояния и как от них избавиться

О навязчивых состояниях современный человек знает не понаслышке. Как часто мы буквально не можем остановиться, лихорадочно проверяя сообщения в смартфоне, пытаясь пройти уровень в видеоигре или покупая вещи, хотя их уже некуда девать. Но где грань между нормой и патологией, и главное, когда целеустремленность и одержимость — путь к творчеству и успеху, а когда — бесплодная и опасная трата усилий и времени? В книге автор рассказывает об истории изучения вопроса, о том, чем навязчивое поведение отличается от зависимости и как работает «компульсивный мозг».

Фрикомыслие. Нестандартные подходы к решению проблем

В современном мире выигрывает не тот, кто быстрее всех бежит или усерднее других работает. Побеждает тот, кто первым найдет нетривиальное решение какой-нибудь проблемы: жизненной или деловой. Эта книга – настоящая энциклопедия необычных решений, она обязательно настроит ваше мышление на новый, более продуктивный лад.