الصفحة 629
الصفحة 629
Acoustics and Hearing
When one listens to music at home, one would like to have an acoustic impression close to that of being in the concert hall. Until recently this meant elaborate multi-channelled sound systems with 5 or more speakers. But head-related stereophony achieves the surround-sound effect in living rooms with only two loudspeakers. By virtue of their slight directivity as well as an electronic filter the limitations previously common to two-speaker systems can be overcome and this holds for any arbitrary two-channel recording. The book also investigates the question of how a wide and diffuse sound image can arise in concert halls and shows that the quality of concert halls decisively depends on diffuse sound images arising in the onset of reverberation. For this purpose a strong onset of reverberation is modified in an anechoic chamber by electroacoustic means.
Acoustical Imaging ; Vol.28
Since 1968, the International Acoustical Imaging Symposium has provided a unique forum for advanced research, promoting the sharing of technology, developments, methods and theory among all areas of acoustics
Acoustic sensing techniques for the shallow water environment : Inversion methods and experiments
Contains the collection of papers from the second workshop on Experimental Acoustic Inversion Techniques for Exploration of the Shallow Water Environment. Acoustic techniques provide the most effective means for remote sensing of ocean and sea floor processes, and for probing the structure beneath the sea floor. No other energy propagates as efficiently in the ocean: radio waves and visible light are severely limited in range because the ocean is a highly conductive medium. However, sound from breaking waves and coastal shipping can be heard throughout the ocean, and marine mammals communicate acoustically over basin scale distances.
Acoustic MIMO Signal Processing
Telecommunication systems and human-machine interfaces start employing multiple microphones and loudspeakers in order to make conversations and interactions more lifelike, hence more efficient. This development gives rise to a variety of acoustic signal processing problems under multiple-input multiple-output (MIMO) scenarios, encompassing distant speech acquisition, sound source localization and tracking, echo and noise control, source separation and speech dereverberation, and many others. The last decade has witnessed a growing interest in exploring these problems, but there has been little effort to develop a theory to have all these problems investigated in a unified framework. This unique book attempts to fill the gap.
Acoustic Emission Testing : Basics for Research - Applications in Civil Engineering
Covers all levels from the description of AE basics for AE beginners (level of a student) to sophisticated AE algorithms and applications to real large-scale structures as well as the observation of the cracking process in laboratory specimen to study fracture processes.
Acne Vulgaris in women
Acne is a disorder of the hair follicles and oil glands (sebaceous glands). The sebaceous glands secrete oils (sebum) to keep the skin moist. When the glands get clogged, it can lead to pimples and cysts. It is very common disease. People of all races and ages get acne, but it is most common in teens and young adults. Acne can continue into adulthood, and when it does, it is more common in women. For many people who have acne, the skin disease affects more than their appearance. Acne can take a toll on one’s emotional health.
Acne vulgaris in Syria : Epidemiology and treatment
Acne vulgaris, a chronic inflammatory disorder of the pilosebaceous unit, exerts significant physical and psychosocial burdens among adolescents. Despite anecdotal evidence of high prevalence in Syria, systematic epidemiological and treatment data are scarce, highlighting the need for local investigation. This study quantifies acne prevalence and severity among Syrian youths, evaluates treatment patterns and preventive practices, identifies patient-perceived triggers and advere effects, assesses psychosocial impacts, and synthesizes dermatologist recommendations to optimize acne management strategies within the Syrian healthcare context.
Acne Vulgaris
Acne vulgaris is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads, blackheads or pimples. Acne is most common among teenagers, though it affects people of all ages, and the main causes Excess oil (sebum) production, Hair follicles clogged by oil and dead skin cells, Bacteria, Inflammations, life style and the hormonal status for the both gender, also, There are several drugs used to treat and prevent acne such as the most common agents like isotretinoin and benzoyl peroxide , hormonal drugs and newly alternative treatments can be used such as green tea, Zinc supplement, and aloe Vera.
Acidity and Basicity
This is the first handbook on zeolites and other microporous materials. It is an up-to-date, highly sophisticated collection of information for those who deal with zeolites in industry or at academic institutions as well as being a guide for newcomers.
Acid Rain - Deposition to Recovery
Acid rain is still with us. Although it is a problem that people have worked diligently to solve, there are still many problem areas throughout the world. In reality the focus of acid rain research has shifted, and this book adds new vision to the topic. It contains papers, selected from Acid Rain 2005, the 7th International Conference on Acid Deposition, that take a broad perspective of the issues, emphasizing a number of themes: - the emission, concentration and deposition of pollutants / - nitrogen and trace elements in ecosystems and their effects on forests, water and soil / - studies of material damage and recovery - critical loads / The book is aimed at scientists and researchers who are working in the area of acid rain and its effects, and on nutrient cycling. This latest research will be of value to those concerned with the mitigation of acid rain effects.
Acid in the Environment : Lessons Learned and Future Prospects
This book is the result of a conference held biannually at the Goodwin-Niering Center for Conservation Biology and Environmental Studies at Connecticut College.is a collection of essays that blends the research findings and the policy analyses of individuals from different academic disciplines with the positions advanced by representatives of NGOs. Acid in the Environment: Lessons Learned and Future Prospects presents a broad approach to the study of acid deposition, exposing readers with a scientific background to significant policy issues and those with a policy orientation to important ecological impacts. The book raises important questions that will serve as a springboard for discussion between diverse groups of teachers and students, concerned citizens and legislators, and scientists and policy makers.
Achieving the Paris Climate Agreement goals ; Part 2 : Science-based target setting for the finance industry — Net-Zero Sectoral 1.5˚C pathways for real economy sectors
Provides an in-depth analysis of industry sectors globally, and its purpose is to present emission reduction targets in 5-year steps (2025 to 2050) for the main twelve finance sectors per the Global Industry Classification System. This scientific analysis aims to support the United Nations Principles for Responsible Investment initiative to give sustainability guidance for the global finance industry. The industry sector pathways presented here are based on the latest global and regional 100% renewable energy and non-energy greenhouse gas Representative Concentration Pathways in order to keep climate change significantly under +1.5 C and thereby achieve the Paris Climate Agreement goals. The heart of this book is three chapters presenting the results of industry scenario modelling. These chapters cover twelve industry and service sectors as well as transportation and buildings. The specific energy demand and specific emissions are presented based on the emission accounting concept of “Scope 1, Scope 2 and Scope 3” emission pathways. This methodology has been developed to measure the climate and sustainability index for companies, and this research project expands the methodology to apply it to entire industry sectors ...
Achieving the Paris climate agreement goals : Global and regional 100% renewable energy scenarios with non-energy GHG Pathways for +1.5°C and +2°C
Presents detailed pathways to achieve 100% renewable energy by 2050, globally and across ten geographical regions. Based on state-of-the-art scenario modelling, it provides the vital missing link between renewable energy targets and the measures needed to achieve them. Bringing together the latest research in climate science, renewable energy technology, employment and resource impacts, the book breaks new ground by covering all the elements essential to achieving the ambitious climate mitigation targets set out in the Paris Climate Agreement. For example, sectoral implementation pathways, with special emphasis on differences between developed and developing countries and regional conditions, provide tools to implement the scenarios globally and domestically. Non-energy greenhouse gas mitigation scenarios define a sustainable pathway for land-use change and the agricultural sector. Furthermore, results of the impact of the scenarios on employment and mineral and resource requirements provide vital insight on economic and resource management implications.
Achieving organizational agility, intelligence, and resilience through information systems
Presents the latest scholarly research on the widespread integration of technological innovations around the globe and examines how organizational agility, intelligence and resilience interprets, affects, and improves the entrepreneurship around the globe
Achieving high performance
Gives you the tools to succeed in a business environment. Discover how to improve your performance and boost productivity by prioritising tasks and managing your time effectively. You'll learn how to improve your skills, develop drive, and lead effectively. In a slim, portable format, Essential Managers- Achieving High Performance gives you a practical "how-to" approach with step-by-step instructions, tips, checklists, and "ask yourself" features showing you how to build your confidence, develop your "brand", and make an impact.
Achieving Excellence in Medical Education
Excellence in Medical Education explores the essential question facing medical educators and learners today: What is our vision of educational excellence, and what can we do to enhance our performance?
Achieving clinical success in lingual orthodontics
Designed to meet the needs of all orthodontists interested in treating children, adolescents, and/or adults with brackets placed on the palatal and lingual surfaces of the teeth.
Achievements in European Research on Grid Systems ; CoreGRID Integration Workshop 2006 (Selected Papers)
Achievements in European Research on Grid Systems comprises the edited proceedings of the 2006 CoreGRID Integration Workshop (CGIW'2006), held October 2006 in Krakow, Poland.
Achievement evaluation of IFI assistance loans to China (1981-2002)
Represents the first comprehensive study done in China to evaluate the overall performance of IFI assistance to China from 1981 to 2002. It analyzes the efficiency of international assistance in contributing to the Chinese economy by investigating the actual implementation of the projects and their economic.
Acetylsalicylic Acid
Contains the latest results of clinical and pharmacological research on Acetylsalicylic acid, addressing the multiple pharmacological properties of this famous drug with a balanced view on their translation into clinical practice, including prevention and treatment of cardiovascular diseases, thromboinflammation and colorectal cancer. Understandable for clinicians, pharmacists, biomedical researchers and pharmacologists alike.
