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Achsendiagramme in der ökonomischen Bildung: Lernschwierigkeiten von Schüler*innen mit dem Preis-Mengen-Diagramm

by Jana Franke

Ökonomische Modelle werden durch bewusste Reduktion der Komplexität des Betrachteten mit dem Ziel des Erkenntnisgewinns entwickelt. Mithilfe von mathematischen Modellierungen können ökonomische Modelle exakter gefasst werden. Dieses Resultat ist ein wichtiges Werkzeug bei der Ermittlung und Darstellung von Systemzusammenhängen. Durch die Visualisierung der mathematischen Modellierungen mit dem Achsendiagramm werden abstrakte Zusammenhänge erkennbar und diskutierbar. Deshalb finden ökonomische Achsendiagramme in der Schule unter anderem als Hilfsmittel zur systematischen Betrachtung einzelner Einflussfaktoren eines komplexen Interaktionssystems, wie beispielsweise der Preisbildung auf Märkten, Einsatz. Die Visualisierung des ökonomischen Modells der Preisbildung auf Märkten mithilfe des Preis-Mengen-Diagramms kann dabei die ökonomischen Verständnisprozesse fördern, sie aber auch behindern. Inwieweit das Preis-Mengen-Diagramm somit Hilfsmittel und Hürde im Wirtschaftsunterricht darstellt, wird in diesem Buch untersucht. Dafür werden Lernschwierigkeiten von Schüler*innen beim Umgang mit und dem Wissen über die mathematische Modellierung des ökonomischen Modells der Preisbildung im vollkommenen Markt und dessen Visualisierung durch das Preis-Mengen-Diagramm identifiziert. Darauf aufbauend werden Implikationen für den Wirtschaftsunterricht abgeleitet.

Acid-Base Balance and Nitrogen Excretion in Invertebrates: Mechanisms and Strategies in Various Invertebrate Groups with Considerations of Challenges Caused by Ocean Acidification

by Dirk Weihrauch Michael O’donnell

This textbook provides a comprehensive overview on the diverse strategies invertebrate animals have developed for nitrogen excretion and maintenance of acid-base balance and summarizes the most recent findings in the field, obtained by state-of-the-art methodology. A broad range of terrestrial, freshwater and marine invertebrate groups are covered, including crustaceans, cephalopods, insects and worms. In addition the impact of current and future changes in ocean acidification on marine invertebrates due to anthropogenic CO2 release will be analyzed. The book addresses graduate students and young researchers interested in general animal physiology, comparative physiology and marine/aquatic animal physiology. Also it is an essential source for researchers dealing with the effects of increasing pCO2 levels on aquatic animals, of which the vast majority are indeed invertebrates. All chapters are peer-reviewed.

Acid-Base Diagrams

by Heike Kahlert Fritz Scholz

Understanding acid-base equilibria made easy for students in chemistry, biochemistry, biology, environmental and earth sciences. Solving chemical problems, be it in education or in real life, often requires the understanding of the acid-base equilibria behind them. Based on many years of teaching experience, Heike Kahlert and Fritz Scholz present a powerful tool to meet such challenges. They provide a simple guide to the fundamentals and applications of acid-base diagrams, avoiding complex mathematics. This textbook is richly illustrated and has full color throughout. It offers learning features such as boxed results and a collection of formulae.

Acid Gas Extraction for Disposal and Related Topics

by Ying Wu John J. Carroll Weiyao Zhu

This is the fifth volume in a series of books focusing on natural gas engineering, focusing on the extraction and disposal of acid gas. This volume includes information for both upstream and downstream operations, including chapters on modeling, carbon capture, chemical and thermodynamic models, and much more. Written by some of the most well-known and respected chemical and process engineers working with natural gas today, the chapters in this important volume represent the most cutting-edge and state-of-the-art processes and operations being used in the field. Not available anywhere else, this volume is a must-have for any chemical engineer, chemist, or process engineer working with natural gas. There are updates of new technologies in other related areas of natural gas, in addition to the extraction and disposal of acid gas, including testing, reservoir simulations, acid gas injection, and natural gas hydrate formations. Advances in Natural Gas Engineering is an ongoing series of books meant to form the basis for the working library of any engineer working in natural gas today. Every volume is a must-have for any engineer or library.

Acid Mine Drainage: From Waste to Resources

by Geoffrey S. Simate Sehliselo Ndlovu

Acid mine drainage (AMD) is essentially the flow of water polluted with metals and other substances from existing/old mining areas and is considered to be one of the sources of pollution. A wide range of technologies are available for preventing AMD generation and/or treating AMD before discharge, but there is a shift towards recovery of industrially useful materials and products from AMD. Acid Mine Drainage: From Waste to Resources explores novel methods developed for the reuse and/or recovery of industrially useful materials from AMD including discussing generation, prediction, prevention, and remediation processes. It includes legislation and policy frameworks governing AMD and its environmental/health impacts. Provides a detailed overview of the mining operations and discusses the geochemical and hydrogeological context of acid mine drainage AMD formation, prediction and impact Presents a holistic approach to AMD generation, prediction, prevention, and remediation processes Presents exclusive material on reuse, recycling, and recovery of industrially useful materials from AMD Gives a detailed overview of the legislation and policy regulatory framework governing the management of AMD Analyses the effects of AMD on the environment and health This volume is aimed at researchers and professionals in metallurgical engineering, chemical engineering, environmental engineering, and mining engineering, including policy makers.

Acid Rain: Rhetoric and Reality (Routledge Revivals)

by Chris C. Park

This title, first published in 1987, provides an authoritative account of both the science and the politics of acid rain. Chris Park places the debates surrounding acid rain in context, and examines the full implications of scientific studies and the effects of acid rain on surface waters, soils and buildings. Evidence is drawn from around the world, including an examination of the damage in Scandinavia and Germany and the effects of acid rain in the U.K. and U.S.A. A comprehensive and relevant work, this is an important guide for students of geography, environment and sustainability and energy policy.

Acid Rain

by J. Rose

Originally published in 1994 this volume includes contributions from environmental scientists, consultants and research workers. The incidence and effects of the phenomenon of acid rain in the late 1970s, 80s and early 1990s , as well as certain remedies, are discussed at length. The roles of vehicles and power stations are examined in detail and legal aspects of curbing acid rain are considered.

Acid Rain and the Rise of the Environmental Chemist in Nineteenth-Century Britain: The Life and Work of Robert Angus Smith (Science, Technology and Culture, 1700-1945)

by Peter Reed

Robert Angus Smith (1817-1884) was a Scottish chemist and a leading investigator into what came to be known as 'acid rain'. This study of his working life, contextualized through discussion of his childhood, education, beliefs, family, interests and influences sheds light on the evolving understanding of sanitary science during the nineteenth century. Born in Glasgow and initially trained for a career in the Church of Scotland, Smith instead went on to study chemistry in Germany under Justus von Liebig. On his return to Manchester in the 1840s, Smith's strong Calvinist faith lead him to develop a strong concern for the insanitary environmental conditions in Manchester and other industrial towns in Britain. His appointment as Inspector of the Alkali Administration in 1863 enabled him to marry his social concerns and his work as an analytical chemist, and this book explores his role as Inspector of the Administration from its inception through battles with chemical manufacturers in the courts, to the struggle to widen and tighten the regulatory framework as other harmful chemical nuisances became known. This study of Smith’s life and work provides an important background to the way that 'chemical' came to have such negative connotations in the century before publication of Rachel Carson's Silent Spring. It also offers a fascinating insight into the changing landscape of British politics as regulation and enforcement of the chemical industries came to be seen as necessary, and is essential reading for historians of science, technology and industry in the nineteenth century, as well as environmental historians seeking background context to the twentieth-century environmental movements.

Acidic Pit Lakes: The Legacy of Coal and Metal Surface Mines (Environmental Science and Engineering)

by Bob Kleinmann Christian Wolkersdorfer Martin Schultze Walter Geller

This monograph provides an international perspective on pit lakes in post-mining landscapes, including the problem of geogenic acidification. Much has been learned during the last decade through research and practical experience on how to mitigate or remediate the environmental problems of acidic pit lakes. In the first part of the book, general scientific issues are presented in 21 contributions from the fields of geo-environmental science, water chemistry, lake physics, lake modeling, and on the peculiar biological features that occur in the extreme habitats of acidic pit lakes. Another chapter provides an overview of methods currently used to remediate acidic pit lakes and treat outflowing acidic water. The second part of the book is a collection of regional surveys of pit lake problems from three European countries and Australia, and case studies of various individual representative lakes. A final case study provides an innovative approach to assessing the economic value of new pit lakes and balancing the costs and benefits, a valuable tool for decision makers.

Acinetobacter: Microbiology, Epidemiology, Infections, Management

by E. Bergogne-Berezin Marie-Laure Joly-Guillou Kevin J. Towner

Acinetobacter details the clinical aspects of this bacterium responsible for many infections in hospitalized patients. This reference explains the importance of these organisms, both from the patient's viewpoint and the economic perspective, and provides clinicians with the knowledge they need to control these bacteria.

Acinetobacter: Biology and Pathogenesis (Infectious Agents and Pathogenesis)

by Eugénie Bergogne-Bérézin Mauro Bendinelli Herman Friedman

There is currently increasing interest concerning the biology and disease caused by Acinetobacter species. Such interest, however, developed relatively slowly because of the necessity to clarify the confusing taxonomy of these organisms. Much work was needed to identify various species as members of this genus, to recognize their epidemiologic profile, their pathogenic role and their increasing importance as multi-antibiotic resistant organisms. In recent years improvement of genetic approaches, recognition of plasmids, integrons and chromosomal sources of resistance mechanisms aroused interest on the role of Acinetobacters in disease by many microbiologists and clinicians, especially internists and infectious disease specialists. In this regard, physicians are frequently confronted with extremely difficult therapeutic approaches for treatment and prevention of severe nosocomial infections due to multi antibiotic resistant Acinetobacter. Moreover, recent observations of community acquired infections have been reported, especially in patients with various risk factors such as immuno-deficiencies. Also, it is now becoming evident that Acinetobacter infections occur frequently in violent situations such as earthquake or war zones. The mechanisms of Acinetobacter virulence are becoming increasingly clear, providing new insights into their pathogenic role in community acquired infections. It is apparent the time is appropriate for detailed review of the increasing knowledge concerning important new information, both clinical and therapeutic, especially information concerning virulence, resistance mechanisms and typing of Acinetobacter spp. Many new findings are accumulating in almost an exponential manner since publication of previous books on this subject in 1991 and 1996.

Acknowledging Indigenous Knowledge: Voices of Tropical Forest People (Urbanization, Industrialization, and the Environment)

by Purabi Bose

This book explores how the landscapes in indigenous territories are rapidly changing due to increased global industrial demand. This deforestation and urbanization have isolated the indigenous people from practicing ‘traditional ways of life.’ Portrayed in this book is the indigenous people’s perspective of their indigenous knowledge (IK) about the environment and why losing IK is a threat to humans, wildlife, and nature. Insight is shared into why acknowledging IK as a science can help solve climate change, food and nutrition insecurity, and increasing new types of pandemics through evidence‑based stories from indigenous people. Features:• Bridges the fractured space between science and nature.• Documents the perspectives of indigenous peoples about their ancestral knowledge.• Provides ethnographic qualitative comparative case studies of forest‑dwelling indigenous peoples over a 19‑year period.• Covers largely remote indigenous territories of ten tropical countries in the Global South.• Provides evidence‑based stories examining indigenous knowledge’s role in the tropics in preserving diverse landscapes and providing nature‑based solutions.

The ACL Handbook

by Martha M. Murray Patrick Vavken Braden Fleming

ACL injuries affect the lives of hundreds of thousands of people each year. Treatment is far from perfect, and physicians and patients face challenges such as high failure rates in adolescent athletes and the inability to slow the accelerated progression of arthritis after an ACL rupture, for example. The ACL Handbook takes a complete view of ACL injuries and treatments, discussing: - Normal ACL and knee mechanics - The body's response to ACL injury - Development of new treatment methods Ideal for orthopedists, sports medicine physicians, and physical therapists, The ACL Handbook is a unique resource for information on the basic and applied science of ACL injury, repair, and the future of treatment.

Acolytes of Nature: Defining Natural Science in Germany, 1770-1850

by Denise Phillips

Although many of the practical and intellectual traditions that make up modern science date back centuries, the category of “science” itself is a relative novelty. In the early eighteenth century, the modern German word that would later mean “science,” naturwissenschaft, was not even included in dictionaries. By 1850, however, the term was in use everywhere. Acolytes of Nature follows the emergence of this important new category within German-speaking Europe, tracing its rise from an insignificant eighteenth-century neologism to a defining rallying cry of modern German culture. Today’s notion of a unified natural science has been deemed an invention of the mid-nineteenth century. Yet what Denise Phillips reveals here is that the idea of naturwissenschaft acquired a prominent place in German public life several decades earlier. Phillips uncovers the evolving outlines of the category of natural science and examines why Germans of varied social station and intellectual commitments came to find this label useful. An expanding education system, an increasingly vibrant consumer culture and urban social life, the early stages of industrialization, and the emergence of a liberal political movement all fundamentally altered the world in which educated Germans lived, and also reshaped the way they classified knowledge.

Acoustic Analysis and Design of Short Elliptical End-Chamber Mufflers

by Akhilesh Mimani

This book presents a three-dimensional analysis of acoustic wave propagation in an elliptical waveguide, and applies the equations and concepts to design axially short elliptical end-chamber muffler configurations which are an important component of a complex multi-pass muffler used in a modern-day automotive exhaust system. A general solution of the Helmholtz equation in elliptical cylindrical co-ordinates is presented in terms of the Mathieu and modified Mathieu modal functions. This is followed by the tabulation and analysis, for the first time, of the non-dimensional resonance frequencies of the transverse modes of a rigid-wall elliptical waveguide for a complete range of aspect ratio. The modal shape patterns of the first few circumferential, radial and cross-modes are examined with particular attention to the pressure nodal ellipses and hyperbolae. An analytical formulation is then outlined for characterizing a single-inlet and single-outlet elliptical muffler with the inlet located on the end face and the outlet located either on the end face or side-surface. The ensuing chapter is devoted toward analyzing the Transmission Loss (TL) performance of different short end-chamber mufflers, namely (a) the straight-flow configuration having ports located on the opposite face, (b) the flow-reversal configuration with ports located on the same end face and (c) configuration with inlet port on the end face and outlet on the side surface. Design guidelines are formulated in terms of the optimal location of inlet and outlet ports which suppresses the deteriorating influence of certain higher-order modes, thereby delivering a broadband TL performance. Directions for future work are discussed toward the end. In summary, this book is a one-stop solution for a practicing automotive engineer designing mufflers, for an applied mathematician studying wave propagation in elliptical geometries, and also as a niche area within noise control engineering.

Acoustic And Non-Acoustic Performance Coal Bottom Ash Concrete (SpringerBriefs in Applied Sciences and Technology)

by Shahiron Shahidan Nurul Izzati Raihan Ramzi Hannan

This book highlights the acoustic performance of concrete made with Coal Bottom Ash (CBA) that has contributed to environmental issues. The usage of CBA in concrete can be recommended as good concrete due to its absorption properties. This book focuses on the principles and techniques employed in acoustic design. The book first elaborates on the perception of noise and properties of noise, followed by physical data, units and measurements. Finally, it takes a look at acoustic analysis which includes acoustic performance effects using different volumes of CBA, density and porosity of concrete.

Acoustic and Vibrational Enhanced Oil Recovery

by George V. Chilingar Kazem Majid Sadeghi Oleg Leonidovich Kuznetsov

ACOUSTIC AND VIBRATIONAL ENHANCED OIL RECOVERY Oil and gas is still a major energy source all over the world, and techniques like these, which are more environmentally friendly and inexpensive than many previous development and production technologies, are important for making fossil fuels more sustainable and less hazardous to the environment. Based on research they did in the 1970s in Russia and the United States, the authors discovered that oil rate production increased noticeably several days after the occurrence of an earthquake when the epicenter of the earthquake was located in the vicinity of the oil producing field. The increase in oil flow remained higher for a considerable period of time, and it led to a decade-long study both in the Russia and the US, which gradually focused on the use of acoustic/vibrational energy for enhanced oil recovery after reservoirs waterflooded. In the 1980s, they noticed in soil remediation studies that sonic energy applied to soil increases the rate of hydrocarbon removal and decreases the percentage of residual hydrocarbons. In the past several decades, the use of various seismic vibration techniques have been used in various countries and have resulted in incremental oil production. This outstanding new volume validates results of vibro-stimulation tests for enhanced oil recovery, using powerful surface-based vibro-seismic sources. It proves that the rate of displacement of oil by water increases and the percentage of nonrecoverable residual oil decreases if vibro-energy is applied to the porous medium containing oil. Audience: Petroleum Engineers, Chemical Engineers, Earthquake and Energy engineers, Environmental Engineers, Geotechnical Engineers, Mining and Geological Engineers, Sustainability Engineers, Physicists, Chemists, Geologists, and other professionals working in this field

Acoustic Array Systems: Theory, Implementation, and Application (Wiley - IEEE)

by Mingsian R. Bai Jeong-Guon Ih Jacob Benesty

Presents a unified framework of far-field and near-field array techniques for noise source identification and sound field visualization, from theory to application. Acoustic Array Systems: Theory, Implementation, and Application provides an overview of microphone array technology with applications in noise source identification and sound field visualization. In the comprehensive treatment of microphone arrays, the topics covered include an introduction to the theory, far-field and near-field array signal processing algorithms, practical implementations, and common applications: vehicles, computing and communications equipment, compressors, fans, and household appliances, and hands-free speech. The author concludes with other emerging techniques and innovative algorithms. Encompasses theoretical background, implementation considerations and application know-how Shows how to tackle broader problems in signal processing, control, and transudcers Covers both farfield and nearfield techniques in a balanced way Introduces innovative algorithms including equivalent source imaging (NESI) and high-resolution nearfield arrays Selected code examples available for download for readers to practice on their own Presentation slides available for instructor use A valuable resource for Postgraduates and researchers in acoustics, noise control engineering, audio engineering, and signal processing.

Acoustic-Based Applications for Vertebrate Vocalization (SpringerBriefs in Applied Sciences and Technology)

by Ramashini Murugaiya Manisha Milani Mahagammulle Gamage Krishani Murugiah Madhumathy Perumal

​Acoustic-Based Applications for Vertebrate Vocalization is designed to help researchers improve their findings and knowledge of vertebrate vocalization by focusing on the integration of acoustic features with new technologies, such as the Internet of Things (IoT), cloud computing, and virtual and cognitive reality. The book addresses the most common challenges in vertebrate vocalization-based research via suitable audio signal processing techniques, data collection, data pre-processing, acoustic feature engineering, extraction, and selection for multidisciplinary applications, i.e. feature classification, vertebrate communication, behavioral analysis, and signal pattern analysis. The book is an important reference for scholars, researchers, industry practitioners, teachers, and students across a number of disciplines, including bioengineering, audio engineering, systems engineering, biotechnology, signal processing, biology, zoology, and animal sciences.

Acoustic Cavitation and Bubble Dynamics (SpringerBriefs in Molecular Science)

by Kyuichi Yasui

This brief explains in detail fundamental concepts in acoustic cavitation and bubble dynamics, and describes derivations of the fundamental equations of bubble dynamics in order to support those readers just beginning research in this field. Further, it provides an in-depth understanding of the physical basis of the phenomena. With regard to sonochemistry, the brief presents the results of numerical simulations of chemical reactions inside a bubble under ultrasound, especially for a single-bubble system and including unsolved problems. Written so as to be accessible both with and without prior knowledge of fundamental fluid dynamics, the brief offers a valuable resource for students and researchers alike, especially those who are unfamiliar with this field. A grasp of fundamental undergraduate mathematics such as partial derivative and fundamental integration is advantageous; however, even without any background in mathematics, readers can skip the e quations and still understand the fundamental physics of the phenomena using the book's wealth of illustrations and figures. As such, it is also suitable as an introduction to the field.

Acoustic, Electromagnetic, Neutron Emissions from Fracture and Earthquakes

by Alberto Carpinteri Giuseppe Lacidogna Amedeo Manuello

This book presents the relevant consequences of recently discovered and interdisciplinary phenomena, triggered by local mechanical instabilities. In particular, it looks at emissions from nano-scale mechanical instabilities such as fracture, turbulence, buckling and cavitation, focussing on vibrations at the TeraHertz frequency and Piezonuclear reactions. Future applications for this work could include earthquake precursors, climate change, energy production and cellular biology. A series of fracture experiments on natural rocks demonstrates that the TeraHertz vibrations are able to induce fission reactions on medium weight elements accompanied by neutron emissions. The same phenomenon appears to have occurred in several different situations, particularly in the chemical evolution of the Earth and Solar System, through seismicity (rocky planets) and storms (gaseous planets). As the authors explore, these phenomena can also explain puzzles related to the history of our planet, like the ocean formation or the primordial carbon pollution, as well as scientific mysteries, like the so-called "cold nuclear fusion" or the correct radio-carbon dating of organic materials, such as the Turin Shroud. In biology, Piezonuclear reactions could explain the mechanism that governs the so-called "sodium-potassium pump" and more in general, the metabolic processes. Scientists engaged in seismology, geophysics, geochemistry, climatology, planetology, condensed matter physics and b iology, as well as those involved in theoretical and applied mechanics, will all appreciate the innovative work presented here in a holistic way.

Acoustic Emission: Fracture Detection in Structural Materials (Foundations of Engineering Mechanics)

by Valentyn Skalskyi Zinoviy Nazarchuk Olena Stankevych

The book presents topical theoretical and experimental studies for developing advanced methods of detecting materials fracture and assessing their structural state using acoustic emission. It introduces new mathematical models characterizing the displacement fields arising from crack-like defects and establishes a new criterion for classifying different types of materials fracture based on specific parameters obtained from wavelet transforms of acoustic emission signals. The book applies this approach to experimental studies in three types of materials—fiber-reinforced composites, dental materials, and hydrogen-embrittled steels.

Acoustic Emission and Durability of Composite Materials

by Nathalie Godin Pascal Reynaud Gilbert Fantozzi

In this book, two kinds of analysis based on acoustic emission recorded during mechanical tests are investigated. In the first, individual, analysis, acoustic signature of each damage mechanism is characterized. So with a clustering method, AE signals that have similar shapes or similar features can be group together into a cluster. Afterwards, each cluster can be linked with a main damage. The second analysis is based on a global AE analysis, on the investigation of liberated energy, with a view to identify a critical point. So beyond this characteristic point, the criticality can be modeled with a power-law in order to evaluate time to failure.

Acoustic Emission Testing: Basics for Research – Applications in Engineering (Springer Tracts in Civil Engineering)

by Christian U. Grosse Masayasu Ohtsu Dimitrios G. Aggelis Tomoki Shiotani

This book provides an introduction to Acoustic Emission Testing and its applications to different materials like concrete, steel, ceramics, geotechnical materials, polymers, biological structures and wood. Acoustic Emission Techniques (AET) techniques have been studied in engineering for a long time. The techniques are applied more and more to practical investigations and are more and more standardized in codes. This is because the degradation of structures due to ageing urgently demand for maintenance and rehabilitation of structures in service. It results in the need for the development of advanced and efficient inspection techniques. In mechanical engineering and concerning the monitoring of machines and mechanical components, AE is a widely accepted observing deterioration in the frame of structural health monitoring. The advantages of AE like sensitivity, damage localization potential, non-intrusive nature as well as developments in signal analysis and data transmission allow applications that could not be considered decades ago.As such, AE techniques draw great attention to diagnostic applications and in material testing. This book 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. This book has proved its worth over the past twelve years. Now in its second edition, it will be a resource that sets the standard and equips readers for the future. All chapters from the 1st edition have been updated and rewritten and eight extra chapters (e.g also regarding AE tomography, AE in plate-like structures and AE for investigations of hardening of fresh concrete) have been added.

Acoustic Fish Reconnaissance

by I.L. Kalikhman K. I. Yudanov

Until now, there has not been any work that systematically presents the subject of acoustic fish reconnaissance, details all major aspects of applying acoustic equipment in commercial fish reconnaissance, and offers sufficient analysis of the effectiveness of fish-finding techniques. Acoustic Fish Reconnaissance responds to this need by providing t

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