In this article, I seek to discuss the principles of modulation and variation in Deleuze’s canonical essay “Postscript on the Societies of Control” (Deleuze 1992). Analyzing and testing what Deleuze recognizes as “inseparable variations, forming a system of variable geometry” and as a “self-deforming cast that will continuously change from one moment to the other […], like a sieve whose mesh will transmute from point to point” (1992: 4), I will focus on the digital image

It is well known that mathematics students have to be able to understand and prove theorems. From our experience we know that engineering students should also be able to do the same, since a good theoretical knowledge of mathematics is essential for solving practical problems and constructing models. Proving theorems gives students a much better understanding of the subject, and helps them to develop mathematical thinking. The proof of a theorem consists of a logical chain of steps. Students should understand the need and the legitimacy of every step. Moreover, they have to comprehend the reasoning behind the order of the chain’s steps. For our research students were provided with proofs whose steps were either written in a random order or had missing parts. Students were asked to solve the \"puzzle\" – find the correct logical chain or complete the proof. These \"puzzles\" were meant to discourage students from simply memorizing the proof of a theorem. By using our examples students were encouraged to think independently and came to improve their understanding of the subject.

Algebraic thinking is a crucial and fundamental element of mathematical thinking and reasoning. It initially involves recognising patterns and general mathematical relationships among numbers, objects and geometric shapes. Using historical evidence, this paper will highlight how the ability to think algebraically might support a deeper and more useful knowledge, not only of algebra, but the thinking required to successfully use mathematics. It will also provide a framework for educators of primary and middle years’ students to develop the necessary thinking strategies required to understand algebra.

No description available.

Entwicklung eines neuen Denkens über Frieden, Krieg und Streitkräfte an der Militärakademie der NVA. Seine Rolle in der friedlichen Revolution.:- Vorwort - Der Vorläufer des Lehrstuhls - Die Formierung des Lehrstuhls in der Fakultät Gesellschaftswissenschaften, November 1961 bis August 1969. - Die wissenschaftliche Profilierung des Lehrstuhls, September 1969 bis August 1976. - Der Lehrstuhl in besonderem Lehrauftrag, September 1976 bis August 1982. - Der Lehrstuhl in besonderem Forschungsauftrag, September 1982 bis August 1989. - Der Lehrstuhl im gesellschaftlichen Umbruch, September 1989 bis September 1990. - Nachwehen und Nachgefechte, Oktober bis Dezember 1990. - Aus der Distanz gesehen. Anlagen: Anlage 1: Publikationen des Lehrstuhls. Anlage 2: Beiträge auf wissenschaftlichen Veranstaltungen (Auswahl 1981 bis 1986). Anlage 3: Berufung von Offizieren des Lehrstuhls in wissenschaftliche / gesellschaftliche Gremien der DDR. Abkürzungsverzeichnis, Personenregister.

Diese Arbeit untersucht prominente Erfassungsmethoden metakognitiver Aktivitäten die während des Lernprozesses zum Einsatz kommen (online) auf deren Güte und Reaktivität. Im Fokus stehen die Methoden Laut-Denken, Fragebogenmethode sowie die Erfassung von Lernleistungsurteilen. Lernaufgaben werden durch komplexe Textlernaufgaben sowie Problemlöseaufgaben in deren Rahmen abduktive Schlüsse gefordert sind repräsentiert. In Studie 1 wurden metakognitive Aktivitäten die mittels retrospektiv eingesetzten Fragebögen sowie mittels Laut-Denken erfasst wurden gegenübergestellt. Dabei wurden die Fragebogenitems parallel zum polytomen Kategoriensystem mit dessen Hilfe die Daten aus der Laut-Denken-Methode ausgewertet wurden konstruiert. Im Rahmen der Auswertung der Laut-Denken Daten war die Übereinstimmung zweiter unabhängiger, gut geschulter Urteiler unbefriedigend. Die Übereinstimmungsunterschiede zwischen den Kategorien sowie zwischen den Probanden waren erheblich. Dies weist darauf hin, dass das Kategoriensystem nicht zur Auswertung der Laut-Denken Daten geeignet ist. Zudem scheinen große Unterschiede in der Nutzung metakognitiver Aktivitäten zwischen den Probanden zu bestehen. Zwischen Fragebogendaten und Laut-Denken-Daten besteht ein geringer nicht signifikanter negativer Zusammenhang. In Studie 2 wurde die Reaktivität der Laut-Denken-Methode und der Aufzeichnung von Lernleistungsurteilen während des Bearbeitens einer Textlese- sowie Problemlöseaufgabe untersucht. Die Ergebnisse dieser experimentellen Studie mit 2x2 Design legen nahe, dass von Laut-Denken im Rahmen von Problemlöseaufgaben reaktive Effekte zu erwarten sind. Von Lernleistungsurteilen hingegen sind reaktive Effekte lediglich im Rahmen von komplexen Textleseaufgaben zu erwarten. Auch im Rahmen dieser Erhebung mittels Laut-Denken konnte lediglich eine unbefriedigende Reliabilität der Messung berichtet werden obgleich in dieser Studie 11 unabhängige Urteiler zum Einsatz kamen. Auch hier wurde keine erwähnenswerte Korrelation zwischen Fragebogendaten und Laut-Denken Erhebung ermittelt. In Studie 3 wurden metakognitive Aktivitäten zu mehreren Messzeitpunkten im Kontext einer komplexen Gruppenlernaufgabe erhoben. Die Ergebnisse weisen auf einen individuellen Einsatz metakognitiver Aktivitäten unabhängig von der Lernsituation hin. Insgesamt lassen die Ergebnisse der Studien darauf schließen, dass Laut-Denken zumindest dann keine valide Erfassung metakognitiver Aktivitäten während des Lernens ermöglicht, wenn polytome Kategoriensysteme mit einer hohen Anzahl an Kategorien zum Einsatz kommen. Außerdem ist in spezifischen Lernsituationen von potentiellen reaktiven Effekte der Erhebung auszugehen. Dies gilt auch für die Erfassung des Monitoring- und Überwachungs-/Regulierungsverhaltens mittels Lernleistungsurteilen.

Critical thinking (CT) is one of the desirable skills to be taught in school. It is not only considered an important 21st century skill for living in a democratic society, but also important for a deep understanding of domain-specific content. Despite its importance, studies show that students often lack the ability to think critically. Moreover, there is a lack of clear theory, supported by empirical findings, for developing domain-specific teaching-learning sequences to promote students’ CT. This makes teaching CT challenging for teachers. To address this gap, the presented study has two goals: to identify design principles for instruction that promotes critical thinking and to develop an exemplary instructional unit in particle physics on this basis. Particle physics is chosen because of its abstractness and complexity, as well as student interest in the subject. Another basis is a definition of CT that can be readily applied in the context of teaching physics. For this purpose, Halpern’s classification of CT strategies and their measurable outcomes is used. Furthermore, a distinction is made between general CT skills that provide a framework for CT, such as understanding the need to define terms precisely, and domain-specific CT skills that represent the application of general CT skills in a specific domain and require domain-specific expertise, such as distinguishing between the concepts of mass and matter in the context of particle physics. This study examines the development of both general and domain-specific CT. The teaching-learning sequences about antimatter (10 to 12 lessons) are developed for students in grades 10, 11, and 12 using the Design-Based Research (DBR) approach. Analysis of the data from pilot studies provides guidance for further development of the antimatter course and the creation of a teacher package that supports teachers both methodologically and in terms of content when implementing the antimatter course. In the main study, the course is implemented in 3 classes in different federal states of Germany. To evaluate the effectiveness of the course in promoting students’ CT, the perspectives of students as well as of teachers are examined. To evaluate the effectiveness of the course from the students’ perspective, the video and audio data, the students’ works, students’ interviews or questionnaires are inductively analyzed using the constant comparative method to identify the students’ learning processes. The results show that students apply content knowledge, apply CT skills, and demonstrate a disposition toward CT. This corresponds to a developed CT. Further analysis is conducted to relate the design skeleton facets of the course (materials, activity structure, and participant structure) to the learning processes, using the conjecture map framework to support the results from the constant comparative method. A Particle Physics Critical Thinking (PPCT) test is also developed to triangulate the results. The results of administering the PPCT test as a posttest are consistent with the qualitative findings on the effectiveness of the course. A questionnaire is developed for teachers to elicit their perceptions of the relevance, practicality, and effectiveness of the course in promoting students’ CT. The results show a positive perception. Combining all the results shows that the antimatter course is an effective course in promoting CT. The design principles applied contribute to the theory of designing effective CT instruction. Furthermore, data analysis reveals the challenges students face in critical thinking and provides teachers with heuristics for designing a domain-specific course. Based on the findings, a model for teaching CT is developed. This work leads to implications for teaching, in addition to other research questions. These include, for example, developing domain-specific CT instruction using 6 principles empirically tested in this study, considering heuristics for designing domain-specific CT instruction, and using the course materials for the purpose of developing CT. In addition, the PPCT can guide the development of other domain-specific CT tests.:Abstract i Kurzfassung iii Table of Contents v 1 Introduction 1 1.1 Importance of critical thinking and its teaching 1 1.2 Research goals 2 1.3 Structure of the work 4 Part I Theory 7 2 What is critical thinking? 9 2.1 Definition of critical thinking 9 2.2 Commonalities between different definitions 20 2.3 Nature of critical thinking: general and domain-specific 28 2.3.1 Nature of critical thinking in physics 30 2.4 Students’ challenges in critical thinking 32 2.4.1 Verbal reasoning skill 33 2.4.2 Argument analysis skill 33 2.4.3 Thinking as hypothesis testing skill 34 2.4.4 Likelihood and uncertainty analysis skill 35 2.4.5 Decision making and problem solving skill 36 2.5 Teachers’ perspective on critical thinking and teaching critical thinking 37 2.5.1 Teachers’ perspective on critical thinking 38 2.5.2 Teachers’ perspective on teaching critical thinking 41 2.5.3 Rationale for developing supportive materials for teachers 41 3 Teaching critical thinking 43 3.1 Challenges of teaching critical thinking 44 3.1.1 Teaching critical thinking as a general or domain-specific skill . 45 3.1.2 Teaching critical thinking implicitly or explicitly 46 3.1.3 Valuing disposition alongside teaching critical thinking 48 3.2 Design of critical thinking (CT) instruction 49 3.2.1 First component of CT instruction: Critical thinking model 50 3.2.2 Second component of CT instruction: Appropriate instructional design theory 52 3.2.3 A proposal for CT instruction 56 3.3 Evaluation of CT instruction 57 3.3.1 Evaluation criteria 58 3.3.2 Evaluation approaches 63 4 Design-based research 69 4.1 Design-based research (DBR) and its features 69 4.2 Conducting DBR in education: Design and evaluation of an instruction 71 4.2.1 Analysis and exploration phase 73 4.2.2 Design and construction phase 74 4.2.3 Evaluation and reflection phase 79 4.3 Summary 89 Part II Empirical Study 91 5 Research questions 93 6 Design and methodology of the study 95 6.1 Design and development of instruction according to Design-based research 96 6.1.1 Analysis and exploration phase 97 6.1.2 Design and construction phase 100 6.1.3 Evaluation and reflection phase 111 6.2 Evaluation of effectiveness of instruction 114 6.2.1 Constant comparative method for qualitative evaluation 114 6.2.2 Description of instruments for quantitative evaluation 119 6.3 Relating design skeleton facets to valued outcomes 133 6.4 Description of instrument for evaluating teachers’ perspective 134 7 Evaluation of effectiveness of the antimatter course 139 7.1 Participants 139 7.2 Evaluation of structure fidelity of implementation 141 7.2.1 Adherence 141 7.2.2 Duration 145 7.3 Results of qualitative data analysis 146 7.3.1 Likelihood and uncertainty analysis skill in the positron discovery context 147 7.3.2 Argument analysis skill in the Big Bang context 162 7.3.3 Verbal reasoning in the context of analysing the scenario of scene of “Illuminati” 173 7.3.4 Thinking as hypothesis testing in the antimatter trap context 184 7.4 Conclusion on the effectiveness of antimatter course 200 7.5 Development of critical thinking skills: a model proposal 202 7.5.1 Model proposal on developing likelihood and uncertainty analysis skill 202 7.5.2 Model proposal on developing argument analysis skill 204 7.5.3 Model proposal on developing verbal reasoning skill 205 7.5.4 Model proposal on developing thinking as hypothesis testing skill 206 7.5.5 An underlying model on developing critical thinking 207 8 Relating design skeleton facets to valued outcomes 213 8.1 Design skeleton facets of antimatter course 213 8.1.1 Materials 214 8.1.2 Activity structure 214 8.1.3 Participant structure 215 8.2 Relation of design skeleton facets to valued outcomes 218 8.2.1 Materials 218 8.2.2 Activity structure 220 8.2.3 Participant structure 221 8.3 Conclusion and discussion 225 9 Teacher perception of the antimatter course 227 9.1 Participants 227 9.2 Perceived relevance 228 9.3 Perceived practicality 232 9.4 Perceived effectiveness 234 9.5 Conclusion and discussion 239 10 Triangulation of findings 241 10.1 Participants 241 10.2 Evaluation of general critical thinking skills 242 10.3 Evaluation of domain-specific critical thinking skills 244 10.4 Conclusion and discussion 244 Part III Conclusion 247 11 Summary and discussion 249 11.1 Empirical study 249 11.2 Contribution to theory 253 11.2.1 Theory of instructional design 254 11.2.2 Evaluation of critical thinking instruction 256 11.2.3 Model on developing critical thinking 257 11.3 Limitations 257 12 Outlook 259 12.1 Implications for teaching critical thinking 259 12.2 Future research 263 Appendix 265 Research instruments 267 A Student information and prior knowledge questionnaire 267 B Particle Physics Critical Thinking (PPCT) test 270 C Student questionnaire 289 D Teacher information 290 E Teacher questionnaire 291 Antimatter course materials 292 F Worksheet 1: Critical Thinking 292 G Worksheet 2: Illuminati 295 H Worksheet 3: Anderson’s cloud chamber photograph 296 I Worksheet 4: Big Bang 298 J Worksheet 5: Search systematically 299 K Worksheet 6: Trapping antimatter 302 L Worksheet 7: Individual work “Illuminati” 305 M Worksheet 8: Group work “Illuminati” 306 List of tables 309 List of figures 313 References 315 Acknowledgements 329 Statement of Authorship 331 / Kritisches Denken (KD) ist eine der wünschenswerten Fähigkeiten, die in der Schule vermittelt werden sollten. Es gilt nicht nur als wichtige Kompetenz des 21. Jahrhunderts für das Leben in einer demokratischen Gesellschaft, sondern auch als wichtig für ein tiefes Verständnis von fachspezifischen Inhalten. Trotz dieser Bedeutung zeigen Studien, dass es den Lernenden oft an der Fähigkeit fehlt, kritisch zu denken. Zudem fehlt es an einer klaren, durch empirische Befunde gestützten Theorie für die Entwicklung von fachspezifischen Lehr-Lern-Sequenzen zur Förderung der KD-Fähigkeiten von SchülerInnen. Dies macht den KD-Unterricht zu einer Herausforderung für Lehrkräfte. Um diese Lücke zu schließen, verfolgt die vorgelegte Studie zwei Ziele: Die Identifikation von Gestaltungsprinzipien für einen Unterricht, der die Fähigkeit zum kritischen Denken fördert, und die Entwicklung einer exemplarischen Unterrichtseinheit in Teilchenphysik auf dieser Grundlage. Die Teilchenphysik wurde aufgrund ihrer Abstraktheit und Komplexität sowie des Interesses der Schüler ausgewählt. Eine weitere Grundlage ist eine Definition von KD, die sich gut im Rahmen des Physikunterrichts anwenden lässt. Hierzu wurde Halperns Klassifizierung von KD-Strategien und ihre messbaren Ergebnisse verwendet. Darüber hinaus wird unterschieden zwischen allgemeinen KD-Fähigkeiten, die einen Rahmen für KD bilden, wie z. B. das Verständnis für die Notwendigkeit, Begriffe genau zu definieren, und domänenspezifischen KD-Fähigkeiten, die die Anwendung allgemeiner KD-Fähigkeiten in einer bestimmten Domäne darstellen und domänenspezifisches Fachwissen erfordern, wie z. B. die Unterscheidung zwischen den Konzepten von Masse und Materie im Kontext der Teilchenphysik. Diese Studie untersucht die Entwicklung sowohl der allgemeinen als auch der domänenspezifischen KD. Die Lehr-Lern-Sequenzen über Antimaterie (10 bis 12 Unterrichtsstunde) werden für SchülerInnen der Klassenstufen 10, 11 und 12 mit Hilfe des Design-Based Research (DBR) Ansatzes entwickelt. Die Analyse der Daten aus den Pilotstudien liefert Anhaltspunkte für die Weiterentwicklung des Antimateriekurses und die Entwicklung eines Lehrerpakets, das Lehrkräfte methodisch und inhaltlich bei der Umsetzung des Antimateriekurses unterstützt. In der Hauptstudie wird der Kurs in 3 Klassen in verschiedenen Bundesländern Deutschlands durchgeführt. Um die Wirksamkeit des Antimateriekurses bei der Förderung des KD der SchülerInnen zu evaluieren, werden sowohl die Perspektiven der SchülerInnen als auch die der LehrerInnen untersucht. Um die Wirksamkeit des Kurses aus der Perspektive der SchülerInnen zu evaluieren, werden die Video- und Audiodaten, die Schülerarbeiten, das Schülerinterview und der Fragebogen induktiv mit der Constant Comparative Methode analysiert, um die Lernprozesse der SchülerInnen zu identifizieren. Die Ergebnisse zeigen, dass die SchülerInnen inhaltliches Wissen und KD-Fähigkeiten anwenden und eine Disposition zeigen, die gemeinsam einer entwickelten KD entsprechen. Zusätzlich werden mit Hilfe von sog. „Conjecture Maps“ die Gestaltungsfacetten des Kurses (Materialien, Aktivitätsstruktur und Teilnehmerstruktur) mit den Lernprozessen in Beziehung gesetzt, um die Ergebnisse aus der Constant Comparative Methode zu stützen. Ein Particle Physics Critical Thinking (PPCT) Test wurde ebenfalls entwickelt, um die Ergebnisse zu triangulieren. Die Ergebnisse der Durchführung des PPCT-Tests als Posttest stimmen mit den qualitativen Erkenntnissen über die Wirksamkeit des Kurses überein. Ferner wurde ein Fragebogen für Lehrkräfte entwickelt, um ihre Einschätzung der Relevanz, Praktikabilität und Wirksamkeit des Kurses bei der Förderung des KD der SchülerInnen zu erheben. Dieser zeigte eine positive Wahrnehmung. Die Kombination aller Ergebnisse zeigt, dass der Antimateriekurs ein effektiver Kurs zur Förderung des KD ist. Die angewandten Gestaltungsprinzipien tragen zur Theorie der Gestaltung eines wirksamen KD-Unterrichts bei. Darüber hinaus zeigt die Datenanalyse die Herausforderungen auf, denen sich die SchülerInnen beim kritischen Denken gegenübersehen, und liefert den Lehrkräften Heuristiken für die Gestaltung eines domänenspezifischen Kurses. Auf der Grundlage der Ergebnisse wird ein Modell für den KD-Unterricht entwickelt. Diese Arbeit führt neben weiteren Forschungsfragen auch zu Implikationen für den Unterricht. Dazu gehören z. B. die Entwicklung eines domainspezifischen KD-Unterrichts unter Verwendung von 6 Prinzipien, die in dieser Studie empirisch getestet wurden, die Berücksichtigung von Heuristiken für die Gestaltung eines domainspezifischen KD-Unterrichts, und die Verwendung der Kursmaterialien zum Zweck der Entwicklung von KD. Darüber hinaus kann der PPCT Test die Entwicklung anderer domainspezifischer KD-Tests anleiten.:Abstract i Kurzfassung iii Table of Contents v 1 Introduction 1 1.1 Importance of critical thinking and its teaching 1 1.2 Research goals 2 1.3 Structure of the work 4 Part I Theory 7 2 What is critical thinking? 9 2.1 Definition of critical thinking 9 2.2 Commonalities between different definitions 20 2.3 Nature of critical thinking: general and domain-specific 28 2.3.1 Nature of critical thinking in physics 30 2.4 Students’ challenges in critical thinking 32 2.4.1 Verbal reasoning skill 33 2.4.2 Argument analysis skill 33 2.4.3 Thinking as hypothesis testing skill 34 2.4.4 Likelihood and uncertainty analysis skill 35 2.4.5 Decision making and problem solving skill 36 2.5 Teachers’ perspective on critical thinking and teaching critical thinking 37 2.5.1 Teachers’ perspective on critical thinking 38 2.5.2 Teachers’ perspective on teaching critical thinking 41 2.5.3 Rationale for developing supportive materials for teachers 41 3 Teaching critical thinking 43 3.1 Challenges of teaching critical thinking 44 3.1.1 Teaching critical thinking as a general or domain-specific skill . 45 3.1.2 Teaching critical thinking implicitly or explicitly 46 3.1.3 Valuing disposition alongside teaching critical thinking 48 3.2 Design of critical thinking (CT) instruction 49 3.2.1 First component of CT instruction: Critical thinking model 50 3.2.2 Second component of CT instruction: Appropriate instructional design theory 52 3.2.3 A proposal for CT instruction 56 3.3 Evaluation of CT instruction 57 3.3.1 Evaluation criteria 58 3.3.2 Evaluation approaches 63 4 Design-based research 69 4.1 Design-based research (DBR) and its features 69 4.2 Conducting DBR in education: Design and evaluation of an instruction 71 4.2.1 Analysis and exploration phase 73 4.2.2 Design and construction phase 74 4.2.3 Evaluation and reflection phase 79 4.3 Summary 89 Part II Empirical Study 91 5 Research questions 93 6 Design and methodology of the study 95 6.1 Design and development of instruction according to Design-based research 96 6.1.1 Analysis and exploration phase 97 6.1.2 Design and construction phase 100 6.1.3 Evaluation and reflection phase 111 6.2 Evaluation of effectiveness of instruction 114 6.2.1 Constant comparative method for qualitative evaluation 114 6.2.2 Description of instruments for quantitative evaluation 119 6.3 Relating design skeleton facets to valued outcomes 133 6.4 Description of instrument for evaluating teachers’ perspective 134 7 Evaluation of effectiveness of the antimatter course 139 7.1 Participants 139 7.2 Evaluation of structure fidelity of implementation 141 7.2.1 Adherence 141 7.2.2 Duration 145 7.3 Results of qualitative data analysis 146 7.3.1 Likelihood and uncertainty analysis skill in the positron discovery context 147 7.3.2 Argument analysis skill in the Big Bang context 162 7.3.3 Verbal reasoning in the context of analysing the scenario of scene of “Illuminati” 173 7.3.4 Thinking as hypothesis testing in the antimatter trap context 184 7.4 Conclusion on the effectiveness of antimatter course 200 7.5 Development of critical thinking skills: a model proposal 202 7.5.1 Model proposal on developing likelihood and uncertainty analysis skill 202 7.5.2 Model proposal on developing argument analysis skill 204 7.5.3 Model proposal on developing verbal reasoning skill 205 7.5.4 Model proposal on developing thinking as hypothesis testing skill 206 7.5.5 An underlying model on developing critical thinking 207 8 Relating design skeleton facets to valued outcomes 213 8.1 Design skeleton facets of antimatter course 213 8.1.1 Materials 214 8.1.2 Activity structure 214 8.1.3 Participant structure 215 8.2 Relation of design skeleton facets to valued outcomes 218 8.2.1 Materials 218 8.2.2 Activity structure 220 8.2.3 Participant structure 221 8.3 Conclusion and discussion 225 9 Teacher perception of the antimatter course 227 9.1 Participants 227 9.2 Perceived relevance 228 9.3 Perceived practicality 232 9.4 Perceived effectiveness 234 9.5 Conclusion and discussion 239 10 Triangulation of findings 241 10.1 Participants 241 10.2 Evaluation of general critical thinking skills 242 10.3 Evaluation of domain-specific critical thinking skills 244 10.4 Conclusion and discussion 244 Part III Conclusion 247 11 Summary and discussion 249 11.1 Empirical study 249 11.2 Contribution to theory 253 11.2.1 Theory of instructional design 254 11.2.2 Evaluation of critical thinking instruction 256 11.2.3 Model on developing critical thinking 257 11.3 Limitations 257 12 Outlook 259 12.1 Implications for teaching critical thinking 259 12.2 Future research 263 Appendix 265 Research instruments 267 A Student information and prior knowledge questionnaire 267 B Particle Physics Critical Thinking (PPCT) test 270 C Student questionnaire 289 D Teacher information 290 E Teacher questionnaire 291 Antimatter course materials 292 F Worksheet 1: Critical Thinking 292 G Worksheet 2: Illuminati 295 H Worksheet 3: Anderson’s cloud chamber photograph 296 I Worksheet 4: Big Bang 298 J Worksheet 5: Search systematically 299 K Worksheet 6: Trapping antimatter 302 L Worksheet 7: Individual work “Illuminati” 305 M Worksheet 8: Group work “Illuminati” 306 List of tables 309 List of figures 313 References 315 Acknowledgements 329 Statement of Authorship 331

No description available.

The impacts of climate change on livestock production are complex problems, existing in the rela-tionship among this sector and others sectors such as environmental, social, economic and political systems. The complexity and dynamic of these impacts cannot be solved simply in isolation with the linear approach. A system thinking methodology is introduced in this paper to understand the impacts of climate change on livestock production, and identify effective interventions strategies to address this systemic problem. System thinking is a way of thinking about the world and relationships which has been developed far along way in the past. Today, systems thinking has become increasingly popular because it provides a \'new way of thinking\' to understand and manage complex problems, whether they rest within a local or global context. While four levels of thinking is a fundamental tool to identify systemic problems, Causal Loop Diagram (CLD) is a visual tool created by a computer program to illustrate the whole picture of climate change impacts. CLD consist of feedbacks for system, which help strategists identify appropriate intervention strategies in solving the systemic problem. / Ảnh hưởng của biến đổi khí hậu đến ngành chăn nuôi là một trong những vấn đề phức tạp, bởi mối quan hệ chặt chẽ có hệ thống của chúng với các lĩnh vực khác như môi trường, xã hội, kinh tế và chính trị. Những tác động phức tạp đa chiều này không thể giải quyết đơn thuần bằng các giải pháp mang tính đơn lẻ. Phương pháp tư duy hệ thống được giới thiệu trong bài này cho phép hiểu đầy đủ, có hệ thống các tác động của biến đổi khí hậu đến ngành chăn nuôi, đồng thời xác định được những giải pháp chiến lược phù hợp để giải quyết vấn đề mang tính hệ thống này. Tư duy hệ thống là cách tư duy và tiếp cận với sự vật, hiện tượng khách quan, và các mối quan hệ của chúng, phương pháp này đã được nghiên cứu và phát triển từ xa xưa. Ngày nay, tư duy hệ thống đang được ứng dụng phổ biến và rộng rãi hơn trong các nghiên cứu phát triển bền vững vì phương pháp này cung cấp một “tư duy mới” để hiểu và quản lý được các vấn đề phức tạp, dù chúng ở qui mô địa phương hay trên phạm vi toàn cầu. Trong đó, bốn cấp bậc của tư duy là công cụ cơ bản để nhận biết các vấn đề phức tạp, và sơ đồ các vòng tròn tác động (CLD) là công cụ trực quan được xây dựng bằng phần mềm máy tính để chỉ ra bức tranh toàn cảnh các tác động của biến đổi khí hậu. Các vòng tròn tác động này phản ánh các diễn biến thực tế và các thông tin giúp cho việc xác định các giải pháp chiến lược.

Experiencing traumatic events has a high lifetime prevalence ranging between 60.7 and 76.2% across different countries (1). Exposure to traumatic events is associated with a higher risk for various mental disorders such as posttraumatic stress disorder (2, 3), which are related to high individual and societal costs (4). The development of interventions to prevent adverse mental health consequences following traumatic event exposure is therefore of vital importance. This, however, requires detailed knowledge about the underlying biological and psychological mechanisms involved in the association between traumatic events and psychopathology. Various risk factors at different levels have already been described in the last decades (5). Biological risk factors include genetic and epigenetic variations (6), alterations in the function of the hypothalamic pituitary adrenal (HPA) axis (7, 8) and the autonomic nervous system (9) as well as changes in brain structure and functioning (10). Psychological risk factors include impairments in cognitive abilities (11) and specific personality traits such as high trait anxiety (12) and maladaptive emotion regulation (13). Social risk factors include impaired interpersonal relations and stigmatization (14, 15). Further, clinical risk factors such as mental health history as well as previous traumatic experiences may also increase the risk for psychopathology after trauma exposure (16). Most of these factors are supposed to be associated with risk of psychopathology independent of the type of traumatic event. However, it is likely that specific traumatic events are associated with different constellations of risk factors, which has so far received little attention in the existing literature. Importantly, traumatic events explicitly include not only events that are personally experienced but also events that are witnessed by an observer (17). This includes witnessing someone being seriously hurt, seeing atrocities or witnessing dead bodies. Witnessed traumatic events are among the most frequent traumatic experiences (1). They are also of high current relevance in the contexts of natural disasters, terrorist attacks and military crises (16, 18, 19). The fact that individuals can develop psychopathological reactions to events that are actually experienced by others raises the question how the suffering of others is being processed. Based on theoretical models and findings from social cognition and neuroscience research, we propose that socio-affective and socio-cognitive mechanisms are involved in the processing and pathological consequences of witnessing traumatic events and could contribute to a better understanding of adverse reactions to this type of traumatic events.