bluuebunny/crossref_metadata_2025_split huggingface dataset:
A COMPARATIVE ANALYSIS OF BOOST CONVERTER TOPOLOGIES FOR PHOTOVOLTAIC SYSTEMS USING MPPT (PO) AND BETA METHODS UNDER PARTIAL SHADING
Authors: SEBA SAMAH , BIRANE MOUHOUB , BENMOUIZA KHALIL 
Published: December 2023

Photovoltaic systems have become a popular renewable energy source due to their many benefits. Optimizing PV systems requires efficiently extracting the maximum power point. This can be achieved by optimizing maximum peak power tracking algorithms or testing different PV system topologies. In this paper, different topologies of dc/dc converters with two MPPT algorithms (Beta and perturb and observe) are tested to control the duty ratio of the converters. At first, the modeling of different DC/DC converter topologies to optimize the maximum power point tracking efficiency of photovoltaic systems is achieved. The simulation results show that the Beta algorithm gives a higher accuracy and efficiency than the P&O algorithm, especially in low oscillations with fast convergence speed. According to the findings, a parallel arrangement of boost converters is usually preferable to a series arrangement, especially for following changes in irradiance.
Organización, ceremonial y protocolo
Authors: Salado Herrera Antonio 
Published: December 2023

Las celebraciones de actos han permitido, desde tiempos inmemoriales, que pueblos y civilizaciones se hayan involucrado hasta el punto de identificarse con este tipo de actividades, las cuales ostentan un alto valor histórico. Así pues, estas formas de uso social y cultural han dado paso a unos patrones de comportamiento que han hecho necesaria la implantación de una serie de formalidades que marquen las pautas para el correcto desarrollo de las mismas.

La presente investigación nace con la intención de estudiar las precedencias como un orden espacio-temporal de las autoridades que participan en un acto y la relación que mantienen entre ellas, concretamente en el ámbito civil-eclesiástico de la ciudad de Sevilla y de forma más precisa, estudiar el caso de la Procesión de la Espada de San Fernando, celebrada el día 23 de noviembre de 2022; festividad de San Clemente.

Partiendo de la importancia que tiene la tradición, la costumbre y lo no escrito en este tipo de actos, se hará un compendio de aspectos teóricos importantes sobre éstos como la titularidad del acto, técnicas de ordenación y normas de etiqueta, entre otros fundamentos sobre ceremonial y protocolo. Todo ello enmarcado en un contexto donde la esfera civil y eclesiástica mantienen vínculos que se han ido modelando con el paso del tiempo y que han configurado el acervo cultural del pueblo sevillano.
Importance of K. A. C. Creswell’s Books in Regards to Early Muslim Architecture Education and Researches in Türkiye
Authors: AYKAÇ Fettah 
Published: December 2023

In Turkey, since 1948, the auxiliary resource books used in teachings of History of Islamic Arts and Architecture studies in higher education are the ones, prepared through summarised translations from certain European authors’ publications. The contents of these books provide very little information and visuals on important buildings of Early Muslim Architecture. In addition, the information given from the works of those authors on these buildings are conveyed as the only and the most accurate available in the market, without mentioning anything about the existence of alternative views of other researchers. Although K.A.C. Creswell presented substantial alternative information in his book titled Early Muslim Architecture which he revised and published as two volumes (three books) in 1969, but the valuable information he presented were not incorporated in the Turkish supplementary books.
Insufficient information and visual materials in sources of Early Muslim Architecture sources in Turkiye, are analyzed in comparison to K.A.C. Creswell’s aforamentioned publicatiıns in this research article. Further more, it will be demonstrated that Creswell’s books contain a substantial amount of information and visual materials, sufficient to address many of the deficiencies present in Turkish educational resources.
La Mortalidad infantil en la Ciudad de Huancayo. Perú en los años 1995-2005
Authors: Torres Maravi Víctor 
Published: December 2023

Objetivo: Caracterizar la distribución espacial de la mortalidad infantil en la ciudad de Huancayo (Junín), según las áreas de estudio en el período de 1995-2005.
Material y Métodos: Estudio ecológico utilizando técnicas de distribución espacial para las áreas de mortalidad infantil en la ciudad de Huancayo. Los datos de mortalidad se obtuvieron de la Dirección Regional de Salud (DISA) Junín. Las variables estudiadas fueron los coeficientes de mortalidad precoz y tardía neonatal y post neonatal, según las áreas del estudio y causa básica de muerte.
Resultados: La mortalidad infantil presentó tendencia decreciente (-14,9%) principalmente en las áreas residenciales (34,7%) y rural (20,9%) durante el periodo de estudio. También ocurrió descenso de la mortalidad el neonatal tardía (19,7%) y post-neonatal (16,1%), persistiendo las enfermedades del aparato respiratorio y las afecciones perinatales como las causas principales de muerte.
Conclusiones: La distribución espacial permitió identificar las áreas en la ciudad de Huancayo que tiene la mayor disminución para la mortalidad neonatal tardía y post-neonatal que fueron las áreas residenciales y rurales respectivamente, pero aún no alcanza la media latinoamericana.
”Lager på lager” – att möjliggöra och synliggöra kommunikativa, kreativa och narrativa kompetenser
Authors: Svensson Anette 
Published: December 2023

I studien tillämpas en undervisningsdesign som sätter berättelser i olika uttrycksformer i centrum bland elever i lågstadiets årskurs 1. Syftet med studien är att undersöka lärares och elevers upplevelser och erfarenheter av att arbeta med undervisningsdesignen för att bidra med kunskap om hur undervisning med berättelsen i centrum kan möjliggöra och synliggöra elevers kommunikativa, kreativa och narrativa kompetenser. I linje med designbaserad forskning ämnar studien dels överbrygga klyftan mellan forskning och skolans praktik, dels utveckla praktiken. Studiens resultat visar att såväl receptivt som produktivt arbete med en berättelse i olika estetiska och mediala uttrycksformer möjliggör elevers kommunikation, kreativa skapande och förståelse av berättelsen. Berättelser utgör en stark didaktisk resurs i grundskolans tidigare år. Föreliggande studie visar att arbete med berättelser kan möjliggöra och synliggöra elevers narrativa kompetens, men en förutsättning för att så ska ske är en undervisning som är flexibel beträffande tidsramar och riktning.
ENGLISH:
“Learning in Layers”: Making Communicative, Creative, and Narrative Competencies Possible and Visible
In the study, a teaching design that focuses on stories in various forms of expression is applied in the first-grade classroom. The aim of the study is to examine teachers’ and pupils’ experiences of working with this teaching design in order to contribute with knowledge regarding how story-centred teaching can make possible and make visible pupils’ communicative, creative, and narrative competencies. In line with design-based research, an objective with the study is to bridge the gap between research and the educational practice, as well as to develop the educational practice. The results of the study show that working with a story through reception and production in various aesthetic and medial forms of expression make possible pupils’ communication, creative production, and deeper understanding of the story. Stories are strong resources for teaching and learning in the primary school classroom. Story-centred teaching can make possible and make visible pupils’ narrative competence, but in order for that to happen, there is a need for teaching that is flexible, particularly regarding time frames and directions.
Keywords: Literature teaching and learning, Literature education, Narrative competence, Creative literacy, Aesthetic learning, Creative production
Analytisk och strukturerad eller kreativ och nyskapande? – en komparativ undersökning av två läroböcker
Authors: Andersson Nicklas , Eriksson Denise , Johansson Maritha 
Published: December 2023

Genom en komparativ analys av två läroböcker i svenska för högskoleförberedande respektive yrkesförberedande program undersöks likheter och skillnader avseende litteratursyn och förväntningar på böckernas mottagare. I artikeln diskuteras på vilket sätt den litteratursyn som präglar respektive bok kan relateras till textval och uppgifter, på vilket sätt detta skiljer sig mellan de två böckerna och vad det får för konsekvenser för litteraturundervisningen. I analysen används begreppen modelläsare och litterär kompentens. Undersökningen visar att även om den grundläggande litteratursynen i de två böckerna delvis är densamma skiljer sig modelläsaren åt så till vida att i läroboken för högskoleförberedande program förväntas denna vara analytisk och strukturerad, medan modelläsaren i boken för yrkesförberedande program är kreativ och nyskapande. Det finns skilda förväntningar på vilken litterär kompetens modelläsaren besitter, men också på vilken kompetens som ska utvecklas, vilket riskerar att missgynna elever ur båda kategorier.
ENGLISH:
Analytical and structured or creative and innovative? A comparison of two textbooks focusing model readers and literary competence
This study investigates two textbooks, one for general and one for vocational programmes, for the subject Swedish in upper secondary school, and analyses differences and similarities regarding what is expected from their readers. Through a comparison of corpuses and tasks, the study investigates model readers and literary competence. Even though the purpose of reading literary texts is described in similar ways in both books, the model reader of the textbook for general education is expected to be analytical and structured, while the model reader of the book for vocational education is creative and innovative. There is a difference in the literary competence expected of the model reader, but also in which competence the students are ment to develop. There is a risk that students of both groups miss out on important parts of literature education.
Keywords: Textbooks, Model readers, Literary competence, Literature education
Metoder för återkoppling – en kraftfull professionskunskap för matematikundervisning inom vuxenutbildningen
Authors: Pettersson Annika , Liljekvist Yvonne 
Published: December 2023

Matematik är ett ämne som många elever studerar inom kommunal vuxenutbildning. Det är samtidigt det ämne inom vuxenutbildningen som har flest avhopp, lägst betyg och högst andel underkända. I denna studie arbetar en yrkesverksam lärare och en forskare tillsammans för att öka kunskapen om hur metoder för återkoppling kan påverka både elevers lärande och lärares undervisning inom vuxenutbildningen. Specifikt studeras hur vuxna elevers engagemang och studieteknik påverkas av två olika metoder för återkoppling. Studien är ett aktionsforskningsprojekt, som tar sin utgångspunkt i en pågående praktik, där läraren under flera år har utvecklat och testat olika metoder för återkoppling. Resultatet visar att metoderna stödjer lärares arbete i den komplexa undervisningssituation som vuxenundervisning innebär. Metoderna verkar även stödja elevernas lärande när de används frekvent och systematiskt i undervisningen, och verkar vara gynnsamt för engagemang och studieteknik.
ENGLISH:
Methods for feedback: A powerful professional knowledge for teaching mathematics in adult education
Mathematics is a subject that many students study in municipal adult education. Still, it is the subject in adult education that has the most dropouts, the lowest grades and the highest percentage of failing grades. In this study, a professional teacher and a researcher work together to increase knowledge about how feedback methods can affect both student's learning och teacher's teaching in adult education. How adult students' commitment and study techniques are affected by two different methods of feedback is studied specifically. The study is an action research project, taking starting point in an ongoing practice, where the teacher has developed and tested different methods for feedback over several years. The results show that the methods support teachers' work in the complex teaching situation that adult education entails. The methods also seem to support student learning when they are used frequently and systematically, and seem to be beneficial for engagement and study techniques.
Keywords: Adult learning, Feedback, Responsive teaching
Design för kontextualiserad grammatikundervisning
Authors: Strandberg Agnes , Lundström Stefan 
Published: December 2023

Den här artikeln utgår från en designbaserad forskningsansats där forskare och lärare i samverkan har skapat och genomfört kontextualiserad grammatikundervisning. I artikeln analyseras vilka förutsättningar som designelementen induktiva arbetssätt, diskussion, visualisering och integrering skapar för att arbeta med gymnasieelevers metalingvistiska förståelse. Materialet består av fokusgruppsamtal med lärarna, elevenkäter och observationsanteckningar av forskaren. Den kvalitativa innehållsanalysen visar att den öppna ingång som de induktiva gruppövningarna innebar, skapade goda förutsättningar för att tala om språkets form och funktion, men också att den utmanade lärarens roll som kunskapsförmedlare. Användningen av färgkoder i undervisningen visade sig även fungera som ett gemensamt språk när elever är i färd med att utveckla metalingvistisk förståelse. Grammatikens integrering till andra innehållsmoment i svenskundervisningen skapade slutligen ett helhetsperspektiv på språket och därmed svenskämnet.
Effect of Soil Amendments and Nutrient Management on Growth and Growth Attributes of Tannia (Xanthosoma sagittifolium (L.) Schott) in the South-Central Laterites (AEU 9) of Kerala, India
Authors: Sreena K. S. , Shalini Pillai P. , Aparna B. 
Published: December 2023

The study was conducted to assess the effect of soil amendments and nutrient management on growth and growth attributes of tannia during the period from Feb-Dec 2021 in a farmer’s field (AEU 9) at Kollam district. The experiment was laid out in RCBD with 13 treatments (4 x 3 + 1) and three replications. The treatments included soil amendments [a1: Dolomite (80 g plant-1), a2: Phosphogypsum (50 g plant-1), a3: Compost (1kg plant-1) + dolomite, and a4 : Compost (1kg plant-1) + phosphogypsum ] and nutrient management [n1: RDN + borax (10 kg ha-1) at 4 MAP + solubor (0.1%) at 5, 6 and 7 MAP, n2: RDN + ZnSO4 (20 kg ha-1) at 4 MAP + ZnSO4 (1%) at 5, 6 and 7 MAP and n3: RDN + borax (10 kg ha-1) + ZnSO4 (20 kg ha-1) at 4 MAP + solubor (0.1%) + ZnSO4 (1%) at 5,6 and 7 MAP] and control (KAU POP). The soil was sandy loam in texture, strongly acidic in reaction (surface soil-5.45 and sub soil-5.05). Cormel pieces (100 g) of local variety planted with a spacing of 90 x 90 cm. The plant height and number of leaves per plant increased up to 6 MAP, and after that it declined in all the treatments up to harvest. The treatment a4 and n3 resulted in the tallest plants (114.37 cm and 100.06 cm) with more number of leaves per plant (8.34 and 7.20) at 6 MAP. The treatment combination a4n3 recorded higher dry matter production (4.92 t ha-1) which was on par with a4n2, a3n3, and a4n1 and found superior to KAU POP. Subsoil acidity is the most chemical impediment in tuber development. Therefore, improving acidic soil with the right amendments and nutrients was essential for tannia’s growth and development.
Thorough Optimization for Intrinsically Stretchable Organic Photovoltaics
Authors: Zheng Xiangjun , Wu Xiaoling , Wu Qiang , Han Yunfei , Ding Guanyu , Wang Yiming , Kong Yibo , Chen Tianyi , Wang Mengting , Zhang Yiqing , Xue Jingwei , Fu Weifei , Luo Qun , Ma Changqi , Ma Wei , Zuo Lijian , Shi Minmin , Chen Hongzheng 
Published: December 2023

AbstractThe development of intrinsically stretchable organic photovoltaics (is‐OPVs) with a high efficiency is of significance for practical application. However, their efficiencies lag far behind those of rigid or even flexible counterparts. To address this issue, an advanced top‐illuminated OPV is designed and fabricated, which is intrinsically stretchable and has a high performance, through systematic optimizations from material to device. First, the stretchability of the active layer is largely increased by adding a low‐elastic‐modulus elastomer of styrene‐ethylene‐propylene‐styrene tri‐block copolymer (SEPS). Second, the stretchability and conductivity of the opaque electrode are enhanced by a conductive polymer/metal (denoted as M‐PH1000@Ag) composite electrode strategy. Third, the optical and electrical properties of a sliver nanowire transparent electrode are improved by a solvent vapor annealing strategy. High‐performance is‐OPVs are successfully fabricated with a top‐illuminated structure, which provides a record‐high efficiency of 16.23%. Additionally, by incorporating 5–10% elastomer, a balance between the efficiency and stretchability of the is‐OPVs is achieved. This study provides valuable insights into material and device optimizations for high‐efficiency is‐OPVs, with a low‐cost production and excellent stretchability, which indicates a high potential for future applications of OPVs.
Conductive Metal–Organic Framework Nanosheets Constructed Hierarchical Water Transport Biological Channel for High‐Performance Interfacial Seawater Evaporation
Authors: Qian Yongqiang , Xue Guanfeng , Chen Luzhuo , Xu Gang , Wang Guan‐E 
Published: December 2023

AbstractSolar interfacial water evaporation shows great potential to address the global freshwater scarcity. Water evaporation being inherently energy intensive, Joule‐heating assisted solar evaporation for addressing insufficient vapor under natural conditions is an ideal strategy. However, the simultaneous optimization of low evaporation enthalpy, high photothermal conversion, and excellent Joule‐heating steam generation within a single material remain a rare achievement. Herein, inspired by the biological channel structures, a large‐area film with hierarchical macro/microporous structures is elaborately designed by stacking the nanosheet of a conductive metal–organic framework (MOF), Ni3(HITP)2, on a paper substrate. By combining the above three features in one material, the water evaporation enthalpy reduces from 2455 J g−1 to 1676 J g−1, and the photothermal conversion efficiency increases from 13.75% to 96.25%. Benefiting from the synergistic photothermal and Joule‐heating effects, the evaporation rate achieves 2.60 kg m−2 h−1 under one sun plus input electrical power of 4 W, surpassing the thermodynamic limit and marking the highest reported value in MOF‐based evaporators. Moreover, Ni3(HITP)2‐paper exhibits excellent long‐term stability in simulated seawater, where no salt crystallization and evaporation rate degradation are observed. This design strategy for nanosheet films with hierarchical macro/microporous channels provides inspiration for electronics, biological devices, and energy applications.
What do we know about the value and market impact of the US Department of Agriculture reports?
Authors: Massa Olga Isengildina , Karali Berna , Irwin Scott H. 
Published: December 2023

AbstractThe purpose of this paper is to comprehensively review the literature on the value and impact of the US Department of Agriculture (USDA) reports and discuss theoretical issues and empirical evidence. Only a handful of studies provide direct estimates of the welfare benefits of USDA information using a rational expectations framework in storable commodity markets. Most studies examine partial evidence of welfare benefits associated with market response to USDA information. These studies include examinations of the impacts of USDA report releases on cash and futures price volatility and other market dynamics, impacts of report releases on options implied volatility, impacts of unanticipated information in USDA reports, as well as informational value, returns, and survey‐based studies. We discuss the methodological and empirical contributions of these studies as well as their shortcomings and potential opportunities for future work.
Silyloxymethylation of Aryl Halides via Metallaphotoredox Catalyzed Desulfinative Cross‐Coupling with Silyl Rongalite
Authors: Keum Minjung , Kim Dae‐Kwon , Um Hyun‐Suk , Lee Junsang , Lee Chulbom 
Published: December 2023

AbstractA visible‐light‐triggered silyloxymethylation of aryl halides has been developed by the merger of photoredox and transition metal catalysis. Under the Ru/Ni dual catalytic conditions, sodium tert‐butyl‐dimethylsilyloxymethanesulfinate (SOMS) undergoes facile extrusion of sulfur dioxide to engender a silyloxymethyl radical that engages in the cross‐coupling with a range of aryl halides to produce benzyl silyl ether derivatives. The protocol is also effective with alkenyl halides and triflates, thus offering an efficient synthetic approach to the silyl‐protected allylic alcohols.
Palladium‐Catalyzed Oxidative Carbonylation of Diarylamines for the Synthesis of Acridone Derivatives
Authors: Guo Wenting , Wu Wenting , Huang Jiali , Zhang Chengyan , Wang Huiyan , Zhou Hualan , Hu Weiming 
Published: December 2023

AbstractA Pd‐catalyzed oxidative dual C−H carbonylation has been developed starting from commercially available diarylamines, in which the Cr(CO)6 served as a safe carbonyl source. This method provides a facile and atom‐economic approach toward diversified acridone derivatives in moderate to good yields, which features with good functional group compatibility, operational safety and easy scale‐up.
Direct Analysis of Complex Reaction Mixtures: Formose Reaction
Authors: Briš Anamarija , Baltussen Mathieu G. , Tripodi Guilherme L. , Huck Wilhelm T. S. , Franceschi Pietro , Roithová Jana 
Published: December 2023

AbstractComplex reaction mixtures, like those postulated on early Earth, present an analytical challenge because of the number of components, their similarity, and vastly different concentrations. Interpreting the reaction networks is typically based on simplified or partial data, limiting our insight. We present a new approach based on online monitoring of reaction mixtures formed by the formose reaction by ion‐mobility‐separation mass‐spectrometry. Monitoring the reaction mixtures led to large data sets that we analyzed by non‐negative matrix factorization, thereby identifying ion‐signal groups capturing the time evolution of the network. The groups comprised ≈300 major ion signals corresponding to sugar‐calcium complexes formed during the formose reaction. Multivariate analysis of the kinetic profiles of these complexes provided an overview of the interconnected kinetic processes in the solution, highlighting different pathways for sugar growth and the effects of different initiators on the initial kinetics. Reconstructing the network's topology further, we revealed so far unnoticed fast retro‐aldol reaction of ketoses, which significantly affects the initial reaction dynamics. We also detected the onset of sugar‐backbone branching for C6 sugars and cyclization reactions starting for C5 sugars. This top‐down analytical approach opens a new way to analyze complex dynamic mixtures online with unprecedented coverage and time resolution.