4,051 research outputs found
Rainbow Valley as embodied heaven: L.M. Montgomery’s narrative spirituality in Rainbow Valley
No full textIntriguingly, L.M. Montgomery’s generally realistic fiction is filled with fantastic elements. This article argues that by following Montgomery into the heavenly fairyland of Rainbow Valley, readers can discern a joyful, creative, imaginative, and integrated image of spiritual life in the conversations, the characters, and the magic valley itself
Befriending the darkness: L.M. Montgomery’s lived theodicy in Anne’s House of Dreams
No full textIn Anne’s House of Dreams, which Elizabeth Epperly calls Montgomery’s most philosophical novel, Montgomery delves into painful topics of loss, suicide, bad marriages, ill-timed love, poverty, and the beautiful-terrible consequences of duty. The result is a complex and nuanced consideration of faithful living in the face of unexplainable evil that functions as a lived theodicy in story form.
“I reckon when the darkness is close to us it is a friend. But when we sorter push it away from us—divorce ourselves from it, so to speak, with lantern light—it becomes an enemy.”
—L.M. Montgomery, Captain Jim in Anne’s House of Dream
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India's Vibgyor man ::selected writings and speeches of L.M. Singhvi /
No full textDr L.M. Singhvi had a multifaceted personality - author, jurist, statesman, philosopher and social reformer. A product of many reputed universities like the University of Allahabad, University of Rajasthan, Harvard University and Cornell University, he was the most celebrated Indian public figure of contemporary times. This volume reflects L.M. Singhvi's prodigious scholarship
Data Communications in an In-Home Smart Grid: Communicating with the Tesla Powerwall
No full textMore insight and control is warranted over an in-home energy management system, consisting in our case mainly of a Tesla Powerwall and a SolarEdge Inverter, in order to allow for further research and development on the possibilities within the field. Not much is known yet on the Tesla Powerwall and its communication, as they aren’t widely available yet and documentation is lacking. In order to achieve this insight, the communicated signals within the system have to read, analysed and used for possible charging commands. Software has been written on a single board computer, which establishes a connection, logs the messages send, displays the retrieved information on a locally hosted webpage and computes a charging command based on the retrieved information and entered user preferences. Even though the analysis of the logged communication signals was lacking due to the Powerwall not initializing, the achieved results should offer a good foundation for further research on the Tesla Powerwall and in-home energy management systems.Electrical Engineering, Mathematics and Computer ScienceDC systems, Energy conversion & Storag
Seamless transitions of multiple micro-grids between the backbone interconnected and the islanded operational modes
No full textThe traditional power system has been undergoing fundamental changes during the latest years. The developments in the field of renewable energy sources, as well as in the power electronics industry, acted as drivers aiding the establishment of micro-grids. Nowadays, power production is becoming more and more decentralized, therefore loads and consumers are powered via local generation avoiding the losses resulting from the transmission system. However, there is still a lot of research needed in the field of micro-grids, before they are mature enough to penetrate the conventional system at a large extent. This thesis aims to contribute to the further development of the field of micro-grids. The thesis focuses on a grid comprised of various micro-grids working in parallel. The micro-grids are interconnected through a low voltage backbone. Each micro-grid can operate either in islanded mode or connected to the backbone and working in parallel with other micro-grids. The main restriction that has to be respected is the lack of ICT equipment. Only local measurements are allowed and each of the interconnected micro-grids cannot acquire information for the rest of the micro-grids. Thus, the frequency of the system is the only communication signal and the main control variable. The frequency closely reflects the state of the system. The main component of each micro-grid is the converter of the battery energy storage system. Apart from that, each micro-grid consists of a PV system and a load, as well as the connection to the backbone. The key aspect is the lack of connection to the main grid. The backbone interconnected system can be perceived to be working in stand-alone mode. Within this regime, the question arises as to how to achieve seamless transitions of such a micro-grid between the islanded and the backbone interconnected operational modes. The literature shows many examples of such transitions of a micro-grid and the main grid. This thesis addresses the seamless mode switching issue in an extended grid comprised of parallel micro-grids and under the absence of a main conventional grid. The main aim of this thesis was to develop adequate controllers which would ensure seamless transitions of the previously described micro-grid between the islanded and the backbone interconnected operation. Nevertheless, in order to implement and test the efficiency of the controllers, the development of a base-model regulating the operation of the micro-grid both in islanded and in backbone interconnected mode was necessary. The respective controllers were developed in the PowerFactory simulation software and their efficiency was tested under different operational conditions, especially under extreme cases. The results were evaluated and conclusions were finally drawn.Electrical Engineering, Mathematics and Computer ScienceElectrical Sustainable Energ
The role of L.M. Karakhan in the Chinese policy of the Soviet Union (1923–1926)
No full textIn the 1920s, the young Soviet state pursued several, sometimes mutually exclusive, goals in its policy towards China. On the one hand, the Soviet leadership did its best to achieve international recognition and sought to protect its vital interests. On the other hand, it actively promoted the idea of a world revolution. Under those circumstances, the country’s foreign ministry needed experienced, flexible, and pragmatic diplomats. In this regard, the activities of L.M. Karakhan, who was sent as a Soviet emissary to the Republic of China to address these sensitive issues, are of particular interest. The figure of L.M. Karakhan is all the more remarkable because, being one of the architects of the USSR’s foreign policy towards China, he himself has not received much attention in either Soviet or Russian historiography. On the basis of new archival documents and Chinese primary sources the paper attempts to give a comprehensive assessment of L.M. Karakhan’s tenure first as a plenipotentiary and then as an ambassador of the USSR to China. The first sections consider the tasks of L.M. Karakhan’s diplomatic mission in China and the vicissitudes of the negotiations on the Soviet-Chinese agreement on the establishment of diplomatic relations. To that end, the Soviet diplomat, following the directives from Moscow, flexibly maneuvered between various groupings of Chinese elites and resisted the pressure of other great powers’ representatives. The following sections examine L.M. Karakhan’s activities as a Soviet ambassador. The author concludes that L.M. Karakhan consistently defended the national interests of the USSR, skillfully combining a fine diplomatic game and assertiveness, even rigidity at times. The latter was vividly manifested in the most challenging issues of Soviet-Chinese relations, such as disputes over the status of the Chinese Eastern Railway and Outer Mongolia. At the same time, the ambassador took an active part in organizing and supporting the revolutionary movement in China. In fact, L.M. Karakhan served as a central coordinator of the Soviet aid to the Kuomintang, determining both its forms and substance. The author concludes that L.M. Karakhan proved himself not merely as an agent of the Soviet leadership, but also as a politician in its own right capable to effectively address a wide range of tasks, some of which had not originally been intended by his mission. That said it is worth mentioning that the assertive, tough style of the Soviet diplomat often raised a lot of criticism among foreign representatives, since it was at odds with the declared USSR intentions to break with the foreign policy practices of tsarist Russia
Principal Aspects of Olbian History in Works of L.M. Slavin
No full textСтаттю присвячено загальному огляду головних питань з історії Ольвії, які вивчав Л.М. Славін, у контексті
минулих і сучасних досліджень.Научная деятельность Л.М. Славина была всесторонней, однако на первое место он всегда ставил интерпретацию и
хронологию археологических памятников. Вместе с тем ему принадлежит много исторических работ. Самой важной
научно-теоретической разработкой Л.М. Славина была общеисторическая периодизация Ольвии. Л.М. Славин первым
обосновал принципы создания исторической периодизации. Он считал целесообразным разделить историю Ольвии
на ряд периодов, качественно отличающихся друг от друга прежде всего по признакам экономического развития, социально-политической жизни, исторических судеб. Ученый впервые попытался применить комплексную методику
исследования источников для каждого из пяти выделенных им периодов с их подробной характеристикой. В своих
обобщающих работах Л.М. Славин оставил много убедительных выводов и соображений относительно разных вопросов
исторического, экономического и культурного развития Ольвии.Research activity of L.M. Slavin was comprehensive, though his principal aim was the interpretation and chronology
of archaeological monuments. In addition, he was the author of many historical works. The most important theoretical
research development of L.M. Slavin was the general historical periodization of Olbia. L.M. Slavin was the first
who substantiated the principles for historical periodization. He considered that it was expedient to divide the
history of Olbia into several periods first of all on the basis of the evidence of economic development, social and
political life, and historic destinies. Also he tried to apply the comprehensive methodology of monuments research
for each of five distinguished periods and for their detailed description
Modelling and comparative study of distributed inductive power transfer systems for mobile electric vehicle charging applications
No full textThe transfer of energy between systems that are not connected by physical contact between them can be accomplished by wireless power transfer methods, through electromagnetic field or radiation between a primary-transmitter and a secondary-receiver section. In the particular field of e-mobility, inductive power transfer systems have been extensively studied and implemented over the last years, proving their effectiveness of powering the drivetrain of electric vehicles, by a magnetic field between a set of loosely coupled coils. The power is generated by a concentrated primary in the form of a pad, or a distributed coil on a roadway track and transferred to the secondary, mounted on the electric vehicle. The operating principles of inductive power transfer include the analysis of the generated magnetic field through the basic electromagnetic equations. Capacitive components are introduced on both sides of the layout, to compensate for the large leakage inductance due to the increased air-gap, indicated by the required clearance between the vehicle and the road. Further studies are conducted on the design of distributed systems, to investigate variations of single and multiphase layouts. Several topologies are introduced and categorized, according to the direction of the field generating current and the single or multiple phase generation of the primary flux. The design variations are analyzed through finite element simulations and the output performance is assessed using equivalent circuit representation. In the particular case of multiphase primary section designs, the interphase mutual inductance can cause power circulation between the primary loops of adjacent phases. The problem is addressed by introducing an adequately designed terminal correction setup, inversing the power circulation between the affected phases. Additionally, an optimization algorithm is introduced, to calculate the optimum parameter values of selected designs, according to limitations and conditions imposed by the application, based on finite element simulation results. The relations between the design parameters and the operation variables are estimated, by analytical calculations and experimental measurements. The accuracy of the generated values is increased by a multiple iteration process and examples of the implementation are calculated for both single and three phase topologies. The output performance of the optimized designs is estimated and compared in terms of efficiency and power delivery for different operating conditions and alignment positions.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
Personality of L.M. Slavin on the materials of Scientific Archive of IA NAS of Ukraine
No full textСтаттю написано на основі архівних матеріалів, що змальовують Л.М. Славіна як вченого і неординарну особистість. У науковий обіг введено невідомі архівні матеріали.В его жизни было четыре главных города: Витебск, где он родился и вырос; Ленинград, в котором прошли его
студенческие годы и началась научная карьера; Киев, где он жил и работал; древняя Ольвия, изучению которой
он посвятил свою жизнь. Уделяя большое внимание подготовке молодых кадров, Л.М. Славин преподавал в Киевском государственном университете им. Т.Г. Шевченко. В первые послевоенные годы Л.М. Славин был директором, а позже — заместителем директора Института археологии УССР; одновременно он возглавлял сектор скифо-античной археологии. Л.М. Славин — автор 151 научной публикации.In the life of L.M. Slavin there were four main cities: Vitebsk, where he was born and grew up, Leningrad, where his
student years passed and the scientific career started, Kyiv, where he worked, and ancient Olbia, to study of which he
devoted all his life. Placing high emphasis on teaching new personnel, L.M. Slavin taught at the State Taras Shevchenko
University of Kyiv. He was an advisor of many authors of dissertations. In early post-war years L.M. Slavin was the
director and later the assistant of a director of Institute of Archaeology of USSR. At the same time he was the head of the
department of Scythian and Sarmatian archaeology. L.M. Slavin was an author of 151 scientific publications
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