A Fact-Based Introduction to Crystal Healing Whether you're new to the practice of crystal healing or have a level of experience with it, chances are you have questions: What works? What doesn't? How and when should I spend my money? And so on. Forget the magic, the mysticism, and the mythology. You've come to the right place for answers. Dan R. Lynch is the author of many books about rocks and minerals. Julie A. Kirsch is a trained psychologist. Together, they delve into the fascinating study of crystal healing, and they share their answers with you. The book begins with an explanation of what crystal healing is, as well as a simple introduction to the basics of geology/mineralogy. From there, the book takes a closer look at several of the most popular methods of crystal healing, such as wearing the crystals or using a healing crystal grid. That's followed by an examination of the science and the psychology behind what the crystals are said to do versus what they have been proven to do. A "field guide" section spotlights some of the most important minerals to know, including amethyst and fluorite, presenting the most commonly used crystals by healing practitioners. The book is rounded out with safety warnings, recommended resources, and more. It's everything you need to take an objective look at crystal healing and to make informed decisions about this controversial practice.

Some of the more interesting elements in the chemistry of life are less commonly occuring ones such as nickel and molybdenum. This volume elucidates the chemistry of these elements in important enzymes and also explores the chemistry of elements that do not normally occur in biological molecules, but are useful in probing their structure and function. Topics include: Acquisition and transport of Ni. Mechanistic action of Ni in a wide variety of enzymes. Multielectron redox systems involving pterins in proteins. Chemistry of the pterin and flavin complexes of Mo, Fe, Cu and Ru ions. Replacement of iron in transferrin by a number of other metal ions. Use of polypyridyl complexes of ruthenium and other transition metals as probes of nucleic acid structure through photochemical reactions.

The LITA Guide to No- or Low-Cost Technology Tools for Libraries provides a practical guide on how to find and use technology tools for a variety of purposes in libraries and, more broadly, in education. Each topic showcases two technology tools in detail and discusses additional tools and provides examples of how librarians or educators are using them in libraries and schools. Types of tools covered are: *Video creation tools, such as PowToon and Animaker, can be used to create animated videos to tell patrons about a new service or teach students about search strategies. *Screencasts includes tools like Jing or Screencast-O-Matic, which can be used to show how to use a new library database or service. *Collaboration tools, including tools such as Padlet or Lino It, can be used for student collaboration or teamwork with colleagues and sharing project ideas quickly and easily. *Assessment tools such as Quizizz and Kahoot allow for gamified assessment of student or patron knowledge. *Presentation tools including Emaze and Academic Presenter can help create more visually appealing presentations.

The LITA Guide to No- or Low-Cost Technology Tools for Libraries provides a practical guide on how to find and use technology tools for a variety of purposes in libraries and, more broadly, in education. Each topic showcases two technology tools in detail and discusses additional tools and provides examples of how librarians or educators are using them in libraries and schools. Types of tools covered are: *Video creation tools, such as PowToon and Animaker, can be used to create animated videos to tell patrons about a new service or teach students about search strategies. *Screencasts includes tools like Jing or Screencast-O-Matic, which can be used to show how to use a new library database or service. *Collaboration tools, including tools such as Padlet or Lino It, can be used for student collaboration or teamwork with colleagues and sharing project ideas quickly and easily. *Assessment tools such as Quizizz and Kahoot allow for gamified assessment of student or patron knowledge.

Financial market bubbles are recurring, often painful, reminders of the costs and benefits of capitalism. While many books have studied financial manias and crises, most fail to compare times of turmoil with times of stability. In Bubbles and Crashes, Brent Goldfarb and David A. Kirsch give us new insights into the causes of speculative booms and busts. They identify a class of assets-major technological innovations-that can, but does not necessarily, produce bubbles. This methodological twist is essential: Only by comparing similar events that sometimes lead to booms and busts can we ascertain the root causes of bubbles. Using a sample of eighty-eight technologies spanning 150 years, Goldfarb and Kirsch find that four factors play a key role in these episodes: the degree of uncertainty surrounding a particular innovation, the attentive presence of novice investors, the opportunity to directly invest in companies that specialize in the technology, and whether or not a technology is a good protagonist in a narrative. Goldfarb and Kirsch consider the implications of their analysis for technology bubbles that may be in the works today, offer tools for investors to identify whether a bubble is happening, and propose policy measures that may mitigate the risks associated with future speculative episodes.

1m Wintersemester 1974/75 hielt der letztgenannte Autor an der Universitat Gottingen eine Vorlesung uber Optimierung. Diese horte der erstgenannte Autor als Student, der zweitgenannte betreute als Assistent die Ubungen. 1m AnschluB an die nachfolgenden Diskussio- nen untereinander entstand der Plan, die vorliegende Arbeit zu schreiben. An Vorkenntnissen sollten dabei nur die einfachsten Grundbegriffe der linearen Funktionalanalysis vorausgesetzt werden. Herrn Professor Dr. K. Ritter mochten wir fur die Ermutigung danken, uberhaupt mit der Arbeit zu beginnen. Fraulein R. -M. Wedekind gilt unser besonderer Dank fur das Schreiben des Manuskripts. Gottingen, November 1977 Andreas Kirsch Wolfgang Warth Jochen Werner Inhaltsverzeichnis Einleitung 8 I Funktionalanalytische Hilfsmittel Konvexe Mengen in linearen Raumen 8 1 2 Konvexe Mengen in linearen normierten Raumen 23 28 II Notwendige Optimalitatsbedingungen Problemstellung, Definitionen, Hilfssatze 28 1 Ein Alternativsatz und Maximumprinzipien 48 2 Konvexe Optimierungsaufgaben 61 3 4 Das Maximumprinzip fur differenzierbare Funk- tionen 68 5 Das Maximumprinzip bei Optimierungsaufgaben mit affin linearen Ungleichungsrestriktionen 76 84 III Anwendungen 1 Notwendige Optimalitatsbedingungen bei opti- malen Steuerungsproblemen 84 2 Notwendi e Optimalitatsbedingungen bei dis- kreten optimal en Steuerungsproblemen 111 3 Notwendige Optimalitatsbedingungen in der Approximationstheorie 118 4 Einige spezielle Beispiele 127 Literaturverzeichnis 149 Symbolverzeichnis 155 Sachverzeichnis 156 Einleitung Eines der wichtigsten Teilgebiete der Optimierung ist die Theorie notwendiger Bedingungen. Untersucht wird hierbei die Frage, wel- chen Bedingungen eine Lasung einer gegebenen Optimierungsaufgabe notwendig zu genugen hat. Bei konkreten Fragestellungen hofft man, mit Hilfe dieser notwendigen Optimalitatsbedingungen Aussagen zu gewinnen, die zu einer Berechnung maglicher Lasungen ausgenutzt werden kannen.