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Courseware
This course is intended for students enrolling for BSc with Education and BEd degrees. Solid state physics forms the backborn of physics. The module has four units: Introduction to solid state physics; Crystal defects and mechanical properties ; Thermal and electrical properties; and Band theory & Optical properties.In the first unit/activity i.e. introduction to solid state physics. The student is expected to explain the atomic structure, describe the various atomic bonds such as ionic bonds and covalent bonds. The learning will also require students to distinguish between crystalline and amorphous solids; polycrystalline and amorphous solids and to explain the production and use of X-ray diffraction. In the second unit i.e. crystal defects and mechanical properties, the learning includes, differentiating between the different types of crystal defects: the point defects (vacancy, interstitials, and substitutional) and dislocations (screw and edge). Here, the student learns that point defects are very localised and are of atomic size, while dislocation is a disorder which extend beyond the volume of one or two atoms. The effects of the defects on mechanical, and electrical properties of these defects are also part of the learning that will take place. In unit three the learning outcomes include definitions of heat capacity, and explanations of variation of heat capacity with temperature based on the classical, Einstein and Debye models. The students will be required to use the free electron theory to explain high thermal and electrical conductivities of metals and also be able to derive and apply the Wiedermann-Frantz law. Finally, in activity four, the expected learning should enable the students to use the band theory to explain the differences between conductors, semiconductors and insulators; explain the differences between intrinsic and extrinsic semiconductors in relation to the role of doping. At the end of it all, the students use the concepts of the interaction of electromagnetic waves (light) with materials to explain optical absorption, reflectivity and transmissivity.
- Subjects:
- Physics
- Keywords:
- Solid state physics
- Resource Type:
- Courseware
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Video
An online lecture on the topic of "Solar Vehicles for Space".This lecture of “Science World: Exploring Space to Benefit Mankind” Education Programme in the 2021/22 school year for secondary students, which aims to cultivate the interest of local youth in space science and elevate their enthusiasm for participating in the development of space technology.
- Subjects:
- Electrical Engineering
- Keywords:
- Solar energy Space vehicles -- Solar engines
- Resource Type:
- Video
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Courseware
The technologies used to produce solar cells and photovoltaic modules are advancing to deliver highly efficient and flexible solar panels. In this course you will explore the main PV technologies in the current market. You will gain in-depth knowledge about crystalline silicon based solar cells (90% market share) as well as other up and coming technologies like CdTe, CIGS and Perovskites. This course provides answers to the questions: How are solar cells made from raw materials? Which technologies have the potential to be the major players for different applications in the future?
- Subjects:
- Electrical Engineering
- Keywords:
- Solar cells Photovoltaic power systems Photovoltaic power generation Silicon solar cells
- Resource Type:
- Courseware
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Courseware
Photovoltaic systems are often placed into a microgrid, a local electricity distribution system that is operated in a controlled way and includes both electricity users and renewable electricity generation. This course deals with DC and AC microgrids and covers a wide range of topics, from basic definitions, through modelling and control of AC and DC microgrids to the application of adaptive protection in microgrids. You will master various concepts related to microgrid technology and implementation, such as smart grid and virtual power plant, types of distribution network, markets, control strategies and components. Among the components special attention is given to operation and control of power electronics interfaces. You will familiarize yourself with the advantages and challenges of DC microgrids (which are still in an early stage). You will have the opportunity to master the topic of microgrids through an exercise in which you will evaluate selected pilot sites where microgrids were deployed. The evaluation will take the form of a simulation assignment and include a peer review of the results.
- Subjects:
- Environmental Engineering and Building Services Engineering
- Keywords:
- Solar energy Renewable energy sources Photovoltaic power systems Microgrids (Smart power grids)
- Resource Type:
- Courseware
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Courseware
The key factor in getting more efficient and cheaper solar energy panels is the advance in the development of photovoltaic cells. In this course you will learn how photovoltaic cells convert solar energy into useable electricity. You will also discover how to tackle potential loss mechanisms in solar cells. By understanding the semiconductor physics and optics involved, you will develop in-depth knowledge of how a photovoltaic cell works under different conditions. You will learn how to model all aspects of a working solar cell. For engineers and scientists working in the photovoltaic industry, this course is an absolute must to understand the opportunities for solar cell innovation.
- Subjects:
- Electrical Engineering
- Keywords:
- Solar energy Renewable energy sources Photovoltaic cells Photovoltaic power generation
- Resource Type:
- Courseware
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Courseware
In the third edition of Solar Energy, you will learn to design a complete photovoltaic system. This course introduces the technology that converts solar energy into electricity, heat and solar fuels with a main focus on electricity generation. Photovoltaic (PV) devices are presented as advanced semiconductor devices that deliver electricity directly from sunlight. The emphasis is on understanding the working principle of a solar cell, fabrication of solar cells, PV module construction and the design of a PV system. You will gain a greater understanding of the principles of the photovoltaic conversion- the conversion of light into electricity. This course explores the advantages, limitations and challenges of different solar cell technologies, such as crystalline silicon solar cell technology, thin film solar cell technologies and the latest novel solar cell concepts as studied on lab-scale. We will discuss the specifications of solar modules and demonstrate how to design a complete solar system for any particular application.
- Subjects:
- Electrical Engineering
- Keywords:
- Solar cells Solar energy Photovoltaic power systems
- Resource Type:
- Courseware
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e-book
The Soils Laboratory Manual, K-State Edition is designed for students in undergraduate, introductory soil science courses, and highlights the many aspects of soil science, including: soil genesis and classification, soil physical properties, soil-water interaction, soil biology, soil chemistry, and soil fertility. The lab manual includes 15 different laboratories, each one starting with an introduction and pre-lab assignment, followed by in-lab activities, and complimented by post-lab assignment. In-lab activities involve field trips, experiments, observation stations, or problem sets. Post-lab assignments include online quizzes, problem sets, or laboratory summary reports.
- Subjects:
- Land Surveying and Geo-Informatics
- Keywords:
- Soils Laboratory manuals Soil mechanics Textbooks
- Resource Type:
- e-book
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Courseware
6.005 Software Construction introduces fundamental principles and techniques of software development, i.e., how to write software that is safe from bugs, easy to understand, and ready for change. The course includes problem sets and a final project. Important topics include specifications and invariants; testing; abstract data types; design patterns for object-oriented programming; concurrent programming and concurrency; and functional programming.
- Subjects:
- Computing
- Keywords:
- Computer programming Computer software -- Development
- Resource Type:
- Courseware
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Others
This case study discusses how Sofitel Jinan Silver Plaza Hotel created distinctive and personalized cultural products by leveraging traditional Chinese festivals such as Dragon Boat and Mid-Autumn. This helped the hotel to establish new revenue channels and achieve a breakthrough, generating a revenue of 2.6 million yuan with a 20% year-on-year growth, making it a leader in the hotel industry's integration of culture and tourism.
- Subjects:
- Marketing and Hotel, Travel and Tourism
- Keywords:
- Festivals -- Marketing Hospitality industry -- Marketing
- Resource Type:
- Others
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e-book
The founders of sociology in the United States wanted to make a difference. A central aim of the sociologists of the Chicago school was to use sociological knowledge to achieve social reform. A related aim of sociologists like Jane Addams, W.E.B. DuBois, and Ida B. Wells-Barnett and others since was to use sociological knowledge to understand and alleviate gender, racial, and class inequality. It is no accident that many sociology instructors and students are first drawn to sociology because they want to learn a body of knowledge that could help them make a difference in the world at large. Sociology: Understanding and Changing the Social World is designed for this audience. It presents a sociological understanding of society but also a sociological perspective on how to change society, while maintaining the structure and contents of the best mainstream texts. Several pedagogical features of the book convey the sociological perspective and change theme: Almost every chapter begins with a Social Issues in the News story from recent media coverage that recounts an event related to the chapter's topic and proceeds with thought-provoking discussion about the social issue related to the event. Additional discussion elsewhere in the chapter helps students understand the basis for this issue and related issues. This dual treatment of the news story will help students appreciate the relevance of sociology for newsworthy events and issues. Three types of boxes in almost every chapter reflect the U.S. founders' emphasis on sociology and social justice. The first box, Sociology Making a Difference, discusses a social issue related to the chapter's topic and shows how sociological insights and findings have been used, or could be used, to address the issue and achieve social reform. The second box, Learning from Other Societies, discusses the experience in another nation(s) regarding a social issue related to the chapter; this box helps students appreciate what has worked and not worked in other nations regarding the issue and thus better understand how social reform might be achieved in the United States. The third box, What Sociology Suggests, summarizes social policies grounded in sociological theory and research that hold strong potential for addressing issues discussed in the chapter. In addition, many chapters contain tables called Theory Snapshots. These tables provide a quick reference tool for students to understand the varying theoretical approaches to the sociological topic that the chapter is discussing. Finally, almost every chapter ends with a Using Sociology vignette that presents a hypothetical scenario concerning an issue or topic from the chapter and asks students to use the chapter's material in a decision-making role involving social change. These vignettes help students connect the chapter's discussion with real-life situations and, in turn, to better appreciate the relevance of sociological knowledge for social reform. Drawing on these features and other discussion throughout the book, a brief and unique final chapter, "Conclusion: Understanding and Changing the Social World,"sums up what students have learned about society and themselves and reviews the relevance of sociology for achieving social change. Sociology: Understanding and Changing the Social World makes sociology relevant for today's students by balancing traditional coverage with a fresh approach that ironically takes them back to sociology's American roots in the use of sociological knowledge for social reform.