263,211 research outputs found
Modeling of a smart grid system using real time data on NEPLAN
No full textThe simulation model of the Smart Grids Laboratory of the Institute of Energy and Transport is presented in this paper and a day of its operation is analyzed. The developed model simulates six different modules (a photovoltaic array, a Li-ion battery storage system, a small wind turbine, a diesel generator, a laboratory load and the connection point with the grid). The modules are connected radially at a common bus
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Comparative analysis of on-load tap changing (OLTC) transformer topologies
No full textOld - EWI-ESE-DC&S DC systems & StorageElectrical Power Processin
Smart grid opportunities and applications in Turkey
No full textA smart grid is a system that uses information and communication technologies to integrate, in an intelligent way, all users connected to the electrical power system considering their behaviour and actions. For this purpose, information about the electrical network, such as the current, the voltage or the power, is gathered together over time so that the behaviour of suppliers and consumers can be observed and automatically coordinated. Smart grids are becoming a significant part in the configuration of future electrical power systems. A lot of research has been done on using smart grids to achieve highly efficient and user-friendly electrical power systems. Many new methods have been introduced to solve the difficulties energy providers face when transforming conventional electrical networks into smart grids. These difficulties include the integration of renewable energy and different grid systems at national and international levels due to changes in frequency, voltage and in the synchronisation mechanism
Photovoltaic System Efficiency Enhancement With Thermal Management: Phase Changing Materials (pcm) With High Conductivity Inserts
No full textThe electrical conversion efficiency of photovoltaic cells from solar radiation heavily depends on the cell temperature. Here we propose a novel thermal management strategy to keep the cell temperature in the same order to attain maximum efficiency. The comparative study presented is based on four solar module configurations: a conventional photovoltaic module (PVT module), a conventional module with PCM layer underneath (PVT/PCM-I), a configuration where fins embedded into PCM (PVT/PCM-II), and configuration where the bottom of the PCM layer in PVT/PCM-II was cooled via convection (PVT/PCM-III). The developed 3D numerical model is solved via ANSYS software involving the solar ray tracing radiation model for incident solar radiations and a transient melting-solidification thermo-fluid model to cater for PCM phase transition. Results from the numerical model were validated via a comparison of experimentally studied results presented in the literature. After 120 minutes, results show that the conversion efficiency of PV cells becomes 16.84%, 18.65%, 18.83%, and 18.98% after 120 minutes for PVT module, PVT/PCM-I, PVT/PCM-II, and PVT/PCM-III with an inlet velocity of 3m/s, respectively. For the respective configurations, the specific electrical power per unit area produced reaches 75.30W/m2, 83.39W/m2, 84.19W/m2, and 89.42W/m2 for solar radiation of 540W/m2 and 26°C ambient temperature. Results reveal that a 5 mm increase in the fin height for PVT/PCM-II results in a 0.22% increase in efficiency while a 0.5m/s increase in the inlet velocity of the cooling air for PVT/PCM-III results in about 0.06% increase in efficiency. © 2021, ilhami Colak. All rights reserved
Första linjens chef - Att stå ensam i stormen? : En kvalitativ studie om hur första linjens chefer inom vård och omsorg balanserar organisationens mål och medarbetarnas behov
No full textSyftet med denna studie är att undersöka hur första linjens chefer inom vård och omsorg hanterar de utmaningar som uppstår i deras ledarskap. Fokus ligger på hur dessa chefer navigerar mellan organisationens mål och medarbetarnas behov, samt vilka strategier de använder för att skapa balans i det dagliga arbetet. För att besvara studiens frågeställningar har en kvalitativ metod använts, där semistrukturerade intervjuer genomförts med sju första linjens chefer inom en kommunal förvaltning i nordvästra Skåne. Den kvalitativa ansatsen möjliggjorde en fördjupad förståelse av respondenternas personliga erfarenheter och perspektiv, då den gav utrymme för att fånga nyanser i hur cheferna själva upplever och tolkar sin roll, sina utmaningar och de strategier de använder för att hantera dessa i praktiken. Tidigare forskning visar att chefsrollen inom vård och omsorg har förändrats avsevärt under de senaste decennierna, till följd av omfattande organisationsförändringar inom den offentliga sektorn. Yrkesrollen har blivit alltmer komplex och präglas idag av ett ökat ansvar kring exempelvis effektivitet, resultatstyrning och administration. Första linjens chefer förväntas därmed hantera en bred uppsättning uppgifter och samtidigt balansera krav från såväl högreledning som medarbetare och externa aktörer. Resultatet har indikerat att cheferna ofta upplever att de står i en pressad “mellanställning”, där de påverkas av både toppstyrda beslut från högsta ledningen och förväntningar från medarbetarna. Trots detta uttrycker respondenterna en förmåga att hitta balans i sin roll som första linjens chef, något som möjliggörs genom exempelvis stödstrukturer, goda organisatoriska förutsättningar samt egna individuella strategier. Studiens resultat pekar på vikten av fungerande stödfunktioner och ett hållbart ledarskap, där chefens inre motivation och engagemang spelar en central roll för attskapa en god arbetsmiljö och en välfungerande verksamhet. Balansen mellan organisatoriska krav och tillgängliga resurser framstår som avgörande, och upprätthålls i hög grad genomtydlig, öppen och lyhörd kommunikation. När medarbetares behov och perspektiv får utrymme samtidigt som ledningens förväntningar hanteras på ett strukturerat sätt, stärks chefens möjlighet att agera i en mellanposition utan att tappa riktning eller förankring. En sådan kommunikativ tydlighet bidrar inte bara till ökad förståelse och tillit i organisationen, utan också till en mer hållbar chefsroll över tid.The purpose of this study is to investigate how first-line managers in health and social care handle the challenges they face in their leadership roles. The focus is on how these managers navigate between the goals of the organization and the needs of their employees, as well as which strategies they use to create balance in their daily work. In order to answer the study’s research questions a qualitative method was used. Semi-structured interviews were conducted with seven first-line managers working in a public sector organization in northwestern Skåne, Sweden. This qualitative approach allowed for a deeper understanding of the participants’ personal experiences and perspectives, capturing how they perceive and manage their roles, challenges, and strategies in practice. Previous research shows that the role of managers in health and social care has changed significantly in recent decades, due to major organizational reforms in the public sector. The role has become more complex, with increased responsibilities related to efficiency, performance management, and administration. First-line managers are now expected to handle a wide range of assessments while balancing demands from senior management, employees, and external stakeholders. The results show that these managers often feel caught in the middle, pressured by decisions from higher levels of leadership while also trying to meet the expectations of their employers. Still, they demonstrate an ability to find balance in their roles. This is made possible through support structures, good working conditions, and their own personal strategies. The study highlights the importance of well-functioning support systems and sustainable leadership. The internal motivation and personal engagement of the manager are key factors in creating a healthy work environment and a well-functioning organization. Balancing organizational demands with available resources is crucial and is often supported by clear, open, and responsive communication. When employees’ needs and voices are acknowledged, and leadership expectations are managed in a structured way, the manager is better able to navigate their position without losing direction or focus. Such communication builds trust and clarity, contributing to a more sustainable leadership role over time.
Protecting Animals 36: Author Witi Ihimaera
No full textIn this very special episode of Knowing Animals I am joined by beloved New Zealand author Witi Ihimaera. Witi has written many books featuring nonhuman animals. He offers us a non-colonial lens through which to think about the human/nonhuman relationship
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
A PROMOTER POLYMORPHISM IN THE PON1 GENE IS ASSOCIATED WITH ESSENTIAL HYPERTENSION
No full textColak, Ertugrul/0000-0003-3251-1043; Colak, Emine/0000-0002-6293-2909; Cosan, Didem Turgut/0000-0002-8488-6405Objective:
Increased vascular oxidative stress, the main risk factor of cardiovascular diseases, is seen as a role in the pathophysiology of essential hypertension. Genetic factors also play an important role in the formation of hypertension
Author in Essay by I. A. Goncharov “Pepiniere”
No full textFeatures of the embodiment of the author’s position in the essay by I. A. Goncharov “Pepiniere” are considered. The relevance of the study is due to the poorly studied poetics of this work. A review of the scientific literature on relevant topics is performed. Methodological and theoretical definitions are given. The scientific novelty of the article is in the fact that for the first time attention is paid to artistic techniques that allow to identify the author's position in the specified literary text. The author of the article grounds her opinion from the fact that, despite the dominance of the subjective point of view, other characters’ views stand out in the work. It is concluded in the study that the text of the work represents a biographical author and author-creator. It was established that the position of the author-creator is expressed through the title, epigraphs, which are quotes, as well as through different points of view, including the author-character, the author-narrator, the characters of the work. The author of the article dwells in detail on different ways of expressing the points of view of the author-character and the author-narrator. It is proved that the point of view of the author-character and the author-narrator can intersect, they are interchanged. The author's development of the term comic “point of view” is presented in the article
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