موضوعات
آموزش و پرورش
ادبیات و زبان
پزشکی، دندانپزشکی و داروسازی
تاریخ و جغرافیا
داستان و رمان
دیگر
دین و فلسفه
روانشناسی
ریاضیات و آمار
سلامتی، تناسب اندام و رژیم غذایی
شیمی و پلیمر
علوم اجتماعی و حقوق
علوم زیستی و بیوتکنولوژی
فیزیک و نجوم
کامپیوتر و اینترنت
کتابهای کودکان و داستان
کسب و کار و اقتصاد
کشاورزی و دامپزشکی و غذا
معماری
مهندسی و فناوری
هنر و تئاتر
محصولات
Handbook of Hope Theory, Measures, & Applications - PDF
نویسندگان: خلاصه: This Handbook of Hope simply would not have happened without a small army of graduate students who, over the past decade, have come into my office one by one and suggested yetanother angle from which we could view hope. In that sense, what has come to be called hope theory has been like a gemstone that, when held to the light, sends shimmers of ideas about yet other possible implications or experiments. I have produced previous theories about reactions to personal feedback, uniqueness seeking, excuse making, and reality negotiation, hue none of chose have continued co produce the sufficiently intriguing questions to get me revved up for yet another experiment. Hope theory has been a great energizer at a time in my life when I have needed it. For the past seven years I have had a severe, unrelenting, and undiagnosed chest pain that is with me from my fim waking moments to the time th.at I slip off into sleep. Although I have been taking powerful pain killers, I think that none of those pills matches the positive effects of my getting lost in theory and research and work- ing with my students. At age 55 (by the time this book is published), I still enjoy the theory and bench science to the same degree that I did as a brand new 27-year- old assistant professor here at Kansas. And so, I have much for which to be th:.ink- ful.
The Economics of Optimal Growth Pathways Evaluating the Health of the Planet’s Natural and Ecological Resources - Original PDF
نویسندگان: خلاصه: If you are a natural resource manager of, say, four acres of cropland or two hectares of forest stand, how would you manage it over your planning time horizon? This is the first and most fundamental question you have to answer in your brain before you get your hands and feet down and dirty. Any reasonable answer would encompass many future time periods, that is, beyond the single present time period, as well as a possibility of convert- ing it to another land use at one future period or even selling it (Ricardo 1817; von Thunen 1826; Faustmann 1849). The economics of optimal growth pathways, the book in your hands or on your kindle presently, is written to provide a rational answer to this question faced by the respective natural resource manager. The scope of this book is, however, far greater than cropland farming or forest manage- ment. This book starts with “four acres” of cropland in Chap. 2, continues to the nation’s economy from Chap. 8 onwards, and ends big with the planet’s atmosphere and the global economy from Chap. 11. The purview of this book falls on the planet’s resources and the economic systems built upon it.
Healthcare and Disease Burden in Africa The Impact of Socioeconomic Factors on Public Health - Original PDF
نویسندگان: خلاصه: Chapter 1 Introduction There is an acute scarcity of research and studies on the conditions of healthcare in African countries. According to Marincola and Kariuki (2020), 20% of the global disease burden falls on the shoulders of Africa, yet only 1% of worldwide scientific output focuses on African countries. Filling the epistemological gap is critical, for it will not only shine a light on our understanding of the realities of the continent, but also pave way for more engaged future studies. The investigation of existing health- care conditions in Africa provides an indispensable basis for generating educated responses to the challenges that confront the continent as a whole and across its different localities. Africa also occupies a historically overlooked and underrep- resented position. It is a unique continent with highly diverse cultures, societies, and economic compositions. While significantly different from the Western or more economically developed parts of the world, Africa is playing a crucial role on the global stage in a variety of aspects. Therefore, studies of Africa will not only benefit the regional communities, but also have a long-lasting impact on the rest of the world. Africa carries the oldest and most diverse genome. Around seven billion of the world’s population share a common origin in Africa. The burden of disease in Africa is also shifting from communicable to non-communicable diseases, which is also a major concern of the societies that are more economically developed. Therefore, addressing the disease burden in Africa, in parallel, means investing in the prevention and treatment of diseases in the rest of the world.
Discrete Element Modelling of Particulate Media by Chuan-Yu Wu - Original PDF
نویسندگان: خلاصه: In numerical simulations of dense two-phase flow involving particulate materials the Discrete Element Method (DEM) has proved particularly effective in capturing the complex hydrodynamics of the solid phase. 1 DEM-based granular solid dynamics, including collisions and persistent contact with elaborate force-displacement laws, friction and cohesion have shown to be superior to traditional fluid-like, continuum approaches, which typically require coarse approximations and the introduction of artificial variables like solids pressure and viscosity. However, computational limitations of DEM models do not allow adding also the burden of flow simulations resolved at the level of particle-particle interstices, so that typically an averaged scale approach, with computational cell sizes of the order of a few particle diameters, is used. 2 .3 As a consequence, formulations of the drag force acting on individual particles are required to close the set of equations to solve for the solid and fluid phases. While many drag force models for monodisperse systems have been proposed in the literature, as discussed below, expressions for such force on a particle in a multi-particle system is currently the subject of extensive research work
Epistemology Modalized by Kelly Becker - Original PDF
نویسندگان: خلاصه: 1 Introduction: Externalism and modalism Recent developments in epistemology, and in philosophy more generally, provide a promising foundation for an answer to a very old question: What is knowledge? The question stymied Plato in the Theaetetus, from which the traditional tripartite analysis of knowledge as justified true belief derives. It received fresh attention when Edmund Gettier showed that the three conditions of the traditional analysis were not jointly sufficient for knowledge. Subsequent attempts to repair the analysis of knowledge aimed (1) to amend the notion of justification to avoid the Gettier problem; (2) to add a fourth condition, for instance that there are no defeaters to one’s justification; or (3) to replace justification with some other condition that captures the requisite link between belief and truth constitutive of knowledge. 1 The uniqueness of the third strategy is not clearly defined because one could easily argue that, whatever the necessary link between belief and truth turns out to be, it just is justification. Nonetheless, I see myself as pursuing this approach because the very term ‘‘justification’’ is all too pregnant with associated notions that I believe are not essential to knowledge, and work- ing toward an account that explicitly involves justification as a necessary condition can lead us away from a proper understanding of knowledge. (A specific instance of this problem arises in Chapter 2.) Unencumbered by the requirement to explicate ‘‘justification,’’ we can inquire into the requisite belief-truth link constitutive of knowledge by testing proposals for that link against our intuitions concerning whether an agent actually knows in parti- cular cases. If we find that a correct or, at least, working account of that link does not capture the traditional conception of justification, then so be it. 2 Our topic, then, is propositional knowledge: knowledge that p for some arbitrary proposition p. I will not claim that all other forms of knowledge, for instance, knowledge by acquaintance, knowledge of one’s own phenom- enological states, and know-how, are reducible to propositional knowledge, and so do not intend to give an account of knowledge in general. This only slightly diminishes the importance of an account of propositional knowl- edge, since it is through sentences and the propositions they express that we think and talk about the world. It would be a significant advance in our understanding if we had a plausible theory of such knowledge
Essentials of Flow Assurance Solids in Oil and Gas Operations Understanding Fundamentals, Characterization, Prediction, Environmental Safety, and Managemen - Original PDF
نویسندگان: خلاصه: ntroduction Oil and gas were formed over millions of years from the dead bodies of plankton (tiny marine organ- isms). These prehistoric dead plankton and their naturally engineered product have dominated and shaped modern times into “the Great Oil Age,” as McKenzie-Brown, Jaremko, and Finch titled their book on the subject [1]. Petroleum shapes our modern times in two main ways: first by serving as the main source of energy, and secondly by being the raw material for thousands of products that play critical roles in modern civilization. Fossil fuels still constitute the major global source of energy, despite the recent advances in renew- able sources of energy. Fossil fuels represent 85% of global primary energy consumption [2,3], with oil remaining as the most used source in the energy mix (33%–34%), as shown in Fig. 1.1. The global consumption of and demand for hydrocarbons (oil and gas) outweigh that of other sources of energy such as coal, nuclear, and renewable energies, due to the fast-growing population and newly emerging technologies. The global energy demand is projected to more than double by 2050 due to the growth in population and economies [4]. The demand for gas is growing faster than the demand for oil, especially in developing countries [5,6]
Water-Soluble Polymers : Solution Properties and Applications - Original PDF
نویسندگان: خلاصه: This volume contains a series of papers originally presented at the symposium on Water Soluble Polymers: Solution Properties and Applications, sponsored by the Division of Colloids and Surface Chemistry of the American Chemical Society. The symposium took place in Las Vegas City, Nevada on 9 to 11th September, 1997 at the 214th American Chemical Society National Meeting. Recognized experts in their respective fields were invited to speak. There was a strong attendance from academia, government, and industrial research centers. The purpose of the symposium was to present and discuss recent developments in the solution properties of water soluble polymers and their applications in aqueous systems
Coatings Of Polymers And Plastics - Original PDF
نویسندگان: خلاصه: Human development is clearly linked to continuous improvements in the materials used every day. Entire stages of history have been named after the critical materials—Stone Age, Bronze Age, Iron Age, and now, the Age of Plastics. When asked his opinion on chemistry’s largest contribution to science and society, Lord Todd, the President of the Royal Society of London, responded: “I am inclined to think that the development of polymerization is, perhaps, the biggest thing chemistry has done, where it has had the biggest effect on everyday life. The world would be a totally different place without artificial fibers, plastics, elastomers,
Colloids and interfaces with surfactants and polymers: an introduction - Original PDF
نویسندگان: خلاصه: This text is both an introduction to the field and a bridge to the more specialist texts that are available, and includes recent ideas that have been developed on the interactions between particles and the concentrated state. It covers the fundamentals of colloid and interface science, placing emphasis on concentrated systems and the ideas associated with them. Takes a user-friendly, non-mathematical approach Includes the widely used techniques such as rheology in greater depth than other introductory texts Gives many practical examples of colloid and interface science Provides guidance on how to apply new ideas to a number of different systemsآیا کتاب مورد نظر هنوز بر روی سایت قرار نگرفته است؟ جای نگرانی نیست! کافی است بر روی گزینه سفارش کتاب کلیک کرده و درخواست خود را ثبت کنید. در کمتر از چند ساعت کتاب شما را آماده خواهیم کرد.