bluuebunny/crossref_metadata_2025 huggingface dataset:
FAKTOR PENENTU KINERJA KEPALA SEKOLAH MENENGAH KEJURUAN
Authors: Siburian Paningkat
Published: February 2017

Abstrak. Penelitian ini bertujuan mengetahui pengaruh budaya organisasi terhadap perilaku inovatif, kepuasan kerja, dan motivasi kerja. Selain itu, juga untuk mengetahui pengaruh budaya organisasi, perilaku inovatif, kepuasan kerja, dan motivasi kerja terhadap kinerja kepala SMK di Medan. Metode penelitian yang digunakan adalah metode survei yang bersifat exploratori. Jumlah responden sebanyak 102 orang yang diambil dengan sampling random proporsional. Instrumen penelitian berupa angket, sedang analisis data lewat teknik statistik jalur dan sebelumnya ada uji normalitas data dengan OneSample Kolmogorov-Smirnov Test, uji linieritas dan keberartian regresi dengan Analisis Variansi pada taraf signifikansi α sebesar 0,05. Hasil penelitian menunjukkan bahwa budaya organisasi secara langsung dan tidak langsung memengaruhi kinerja, sedangkan perilaku inovatif, kepuasan kerja, dan motivasi kerja hanya memberi pengaruh langsung terhadap kinerja kepala SMK. Besarnya perubahan kinerja yang secara langsung dapat ditentukan budaya organisasi, perilaku inovatif, kepuasan kerja, dan motivasi kerja secara berturut-turut adalah 10,24 %, 12,32%, 3,42%, dan 2,92. Kata Kunci: kinerja, budaya organisasi, perilaku inovatif, kepuasan kerja, motivasi kerja
PERDEBATAN IDEOLOGI PENDIDIKAN
Authors: Soeharto Karti
Published: February 2017

Abstract: Debates on Educational Ideologies. The study of educational ideologiesderives from perspective debates between the formal system perspective and theprocess perspective. The formal educational ideology has applied the generalphilosophical system since 1950, whereas the process or problematic perspectiveusing the semantic, rational, and empirical methods has refused the former since1960. Today, this dispute is still going on. Based on O’Neill’s taxonomy, theeducational ideology in Indonesia can be classified as a conservative socialrevisionist ideology or liberal compromise ideology.Keywords: educational ideology, conservative social revisionist ideology, liberalcompromise ideology
KESADARAN MASYARAKAT SUKU DAYAK TERHADAP PENDIDIKAN ANAK DI PEDALAMAN KALIMANTAN TENGAH
Authors: Y. Bunu Helmuth
Published: February 2017

Abstrak: Tujuan penelitian ini adalah untuk memahami kesadaran masyarakat Suku Dayak Ot Danum tentang pendidikan. Metode yang digunakan adalah kualitatif perspektif fenomenologi. Fokus studi pada masyarakat di Desa Tumbang Marikoi, Kecamatan Damang Batu, Kabupaten Gunung Mas, Provinsi Kalimantan Tengah. Teknik pengumpulan data meliputi pengamatan partisipatif, wawancara mendalam, dan dokumentasi. Teknik analisis data meliputi koleksi data, penyajian data, reduksi data, dan penarikan kesimpulan. Berdasarkan hasil penelitian dapat disimpulkan: (1) kesadaran masyarakat pedalaman terhadap lembaga pendidikan TK sudah tinggi; (2) kesadaran masyarakat terhadap pendidikan SD sudah tinggi; (3) kesadaran masyarakat terhadap pendidikan SMP dapat dikatakan masih kurang baik; (4) kesadaran masyarakat terhadap pendidikan menengah atas juga masih kurang baik; dan (5) kesadaran masyarakat terhadap tinggi juga kurang baik. Kata Kunci: kesadaran masyarakat, Suku Dayak, pendidikan anakTHE AWARENESS ON THE CHILDREN’S EDUCATION OF THE DAYAK ETHNIC COMMUNITY IN THE REMOTE AREA OF CENTRAL KALIMANTAN Abstract: The purpose of this study was tounderstand the Dayak ethnic community’s awareness on education. The method used was the qualitative perspective phenomenology. The study focused on the community in Tumbang Marikoi, Damang Batu, Gunung Mas, Central Kalimantan Province. The data were collected through participant observation, in-depth interviews, and documentation. The data were analyzed through data collection, data presentation, data reduction, and conclusion drawing. The findings showed that: (1) the community had high awareness on kinder garten education; (2) the community had high awareness on the elementary school education; (3) the community had low awareness on the junior high school education; (4) the community had low awareness on the senior high school education; and (5) the community had low awareness on the higher education. Keywords: community awareness, Dayak Ethnic, children education
FAKTOR-FAKTOR DETERMINAN PERAN DOSEN DALAM PENJAMINAN MUTU PERGURUAN TINGGI
Authors: Sumardjoko Bambang
Published: February 2017

Abstract: Determinant Factors of Lecturers’ Roles in Quality Assurance in HigherEducation. This study aims to (1) find out an empirically tested model ofdeterminant factors of lecturers’ roles in quality assurance in higher education, and(2) investigate contributions of leadership, organization culture, lecturers’competence, and achievement motivation as individual variables and an aggregateto lecturers’ roles in quality assurance. The sample consisted of 206 lecturers ofprivate universities in the area of Surakarta, selected by the proportional randomtechnique. The data were collected through questionnaires and analyzed by theSEM technique. The results show that, first, the goodness of fit exists between theconceptual model and the empirically tested model (p-value 0.34 > 0.05 andRMSEA 0.01 < 0.05); second, the contributions of leadership, organization culture,lecturers’ competence, and achievement motivation to quality assurance are,respectively, 28.09%, 50.41%, 8.41%, and 5.29%; third, the contribution of thevariables as an aggregate is 95%. This implies that to improve lecturers’ roles inquality assurance in higher education, it is necessary to develop visionaryleadership, firm organization culture, competent lecturers’ support, and highachievement motivation.Keywords : leadership, organization culture, competence, achievement motivation,lecturers’ roles
Особенности зонной структуры и механизмов проводимости полупроводника n-HfNiSn, сильно легированного Y
Authors: Ромака В.А. , Rogl P. , Ромака В.В. , Kaczorowski D. , Крайовский В.Я. , Стаднык Ю.В. , Горынь А.М.
Published: February 2017

Исследованы кристаллическая и электронная структуры, энергетические, кинетические и магнитные характеристики полупроводника n-HfNiSn, сильно легированного акцепторной примесью Y, в диапазонах: T=80-400 K, NAY~1.9·1020-5.721 см-3 (x=0.01-0.30) и H≤10 кГс. Установлена природа механизма генерирования структурных дефектов, приводящего к изменению ширины запрещенной зоны и степени компенсации полупроводника, суть которого в одновременном уменьшении и ликвидации структурных дефектов донорной природы в результате вытеснения ~1% атомов Ni из позиции Hf (4 a) и генерировании структурных дефектов акцепторной природы при замещении атомов Hf в позиции 4 a атомами Y. Результаты расчета электронной структуры Hf1-xYxNiSn согласуются с экспериментальными данными. Обсуждение результатов ведется в рамках модели сильно легированного и компенсированного полупроводника Шкловского-Эфроса. DOI: 10.21883/FTP.2017.02.44095.8129
Новый механизм поляризации полупроводника на интерфейсе с органическим диэлектриком
Authors: Яфясов A.M. , Божевольнов B.Б. , Рюмцев Е.И. , Ковшик А.П. , Михайловский В.Ю.
Published: February 2017

Создана система полупроводник-органический диэлектрик с пространственно распределенным зарядом, обладающая уникально низкой плотностью быстрых поверхностных состояний (Nss) на интерфейсе. На примере n-Ge реализована система с Nss~5·1010 см-2 и проведено исследование физических характеристик такой системы с жидкостным и металлическим полевыми электродами. В системе с органическим диэлектриком впервые реализован диапазон изменения поверхностного потенциала от обогащения области пространственного заряда полупроводника основными носителями заряда до состояния инверсии без изменения механизма взаимодействия адсорбированного слоя с поверхностью полупроводника. Обнаружен эффект усиления поляризации области пространственного заряда полупроводника вследствие изменения пространственной структуры подвижного заряда в органическом диэлектрическом слое. На основе разработанной системы открываются технологические возможности для формирования новой генерации электронных приборов на органических плeночных структурах и экспериментального моделирования электронных свойств биологических мембран. DOI: 10.21883/FTP.2017.02.44105.8331
Термическая устойчивость гидрированных углеродных нанотрубок малого диаметра
Authors: Подливаев А.И. , Опенов Л.А.
Published: February 2017

Методом молекулярной динамики численно исследована начальная стадия процесса десорбции водорода из полностью гидрированных углеродных нанотрубок (3.0) и (2.2). Непосредственно определена температурная зависимость скорости десорбции при T=1800-2500 K. Путем экстраполяции найдены характерные времена десорбции при температурах вне этого диапазона. Показано, что десорбция водорода приводит к появлению электронных состояний внутри запрещенной зоны. DOI: 10.21883/FTP.2017.02.44109.8281
Недебаевский диэлектрический отклик в монолитных слоях стеарата серебра
Authors: Кастро Р.А. , Горяев М.А. , Смирнов А.П.
Published: February 2017

Представлены результаты исследования электрофизических свойств стеарата серебра методами диэлектрической спектроскопии и дифференциальной сканирующей калориметрии (ДСК). Установлены механизмы переноса заряда и диэлектрической релаксации в стеарате серебра. Обнаружено существование критической температуры T=338 K, вероятно связанной с низкотемпературным фазовым переходом в исследуемой системе. Работа выполнена при поддержке Минобрнауки РФ в рамках выполнения госзадания N 2014/376 (базовая часть). DOI: 10.21883/FTT.2017.02.44044.278
ИК-Фурье спектроскопическое исследование кинетики фазового перехода I рода в тридекановой кислоте СH-=SUB=-3-=/SUB=-(CH-=SUB=-2-=/SUB=-)-=SUB=-11-=/SUB=-СООH
Authors: Марихин В.А. , Мясникова Л.П. , Радованова Е.И. , Волчек Б.З. , Медведева Д.А.
Published: February 2017

Методом ИК-Фурье спектроскопии изучены структурные изменения в кристаллических сердечниках ламелей тридекановой кислоты СН3(СН2)11СООН при нагревании от T1=13.5oC до T2>Tm=41.6oC. Анализировалось поведение полос маятниковых (область 720 cm-1) и деформационных (область 1470 cm-1) колебаний СН2-групп в метиленовых отрезках тридекановой кислоты. Показано, что в области фазового перехода I рода (Ts-s~36oC) в узком температурном интервале (Delta T1≤1 K) происходит постепенная трансформация исходной триклинной субъячейки в гексагональную субъячейку. Рассмотрен механизм этого перехода с позиции теории диффузионных фазовых переходов I рода. Работа выполнена при финансовой поддержке Российского фонда фундаментальных исследований (код проекта 16-03-00493). DOI: 10.21883/FTT.2017.02.44056.285
Принцип подобия траекторий при движении заряженных частиц с разными массами в однородных по Эйлеру электрических и магнитных полях
Authors: Аверин И.А. , Бердников А.С. , Галль Н.Р.
Published: February 2017

Электрические поля, которые описываются однородными по Эйлеру потенциалами, и подчиняются принципу подобия траекторий, сформулированному Ю.К. Голиковым, являются полезным инструментом для разработки электронно-оптических и ионно-оптических систем с уникальными свойствами. В этой работе принцип подобия траекторий обобщается на случай магнитных полей и комбинированных электрических и магнитных полей, однородных по Эйлеру. DOI: 10.21883/PJTF.2017.03.44225.16402
Концевые эффекты при обтекании плазменного актуатора
Authors: Моралев И.А. , Селивонин И.В.
Published: February 2017

Исследована структура течения, формирующегося в пограничном слое за боковой границей разрядной зоны плазменного актуатора на основе диэлектрического барьерного разряда. Показано, что в окрестности границы плазменного слоя существует область с ненулевой компонентой тангенциальной скорости. На некотором удалении от электрода формируется концентрированный вихрь, ось которого ориентирована вдоль линий тока внешнего течения. При наличии двух близко расположенных границ плазменной области формируется пара вихрей с противоположным направлением вращения. Также впервые визуализированы вихревые возмущения, инициированные в пограничном слое отдельными микроразрядами. DOI: 10.21883/PJTF.2017.04.44301.16500
Corporate governance in emerging markets and its impact on finance performance
Authors: Lizarzaburu Bolaños Edmundo , Berggrun Luis , Burneo Farfan Kurt Johnny
Published: February 2017

This paper reviews the theoretical framework of Corporate Governance and multiple issues in which it is evaluated such as agency costs, asymmetric information, insider trading, manipulation of earnings, Board of Directors, etc. Finally, it is reviewed the impact of Corporate Governance over cost of equity, capital structure and financial performance
The effects of start-up factor (self-efficacy) on business performance
Authors: Radipere Simon
Published: February 2017

The study examined relationship between self-efficacy and business performance using 500 SMMEs in Gauteng province, South Africa. Questionnaire was used to collect data from 500 SMMEs owners. The findings from the survey were modelled through a categorical regression model with business performance as dependent variable. The level of significance of the fourteen variables out of eighteen variables suggests that self-efficacy be classified as the strongest predictor of business performance. These findings, depicting the magnitude of the business environment in the study area, clearly confirm the positive impact of self-efficacy on business performance
Transformations of the Concept of Linear Function in Technological High Schools
Authors: Flores Garcia Rebeca
Published: February 2017

The results shown in the following chapter come from a research that shows some of the transformations of the concept of linear function observed from its definition in mathematics when facing the written, intended and enacted curriculum. This study was developed in technological high school level, with the participation of three teachers of mathematics, who were teaching the course called Functions and Algebraic Thinking. A case study was considered as a practical research method to carry out the investigation, adopting various processes to gather evidence to describe, verify or create theory. Different sources of evidence were used to gather and analyze information, such as: the official program of the course, three textbooks, class recordings and the application of a questionnaire. The results show transformations in both, the concept of function and the concept of linear function, pointing out, in this way, an educational problem that should be solved by modifying not only the concept, but also the teaching and learning of it.
Accurate Items for Inaccurate Conceptions in Undergraduate Physics Students
Authors: Hernandez Eder , Zavala Genaro
Published: February 2017

Generating a concept inventory for a specific student sample is a task that, if completed successfully, could help the instructor have a better approach to what students think at the time they are taking a test. This allows the instructor to observe which concepts the students are struggling with the most, and make the necessary adjustments for that current group, or for future ones. This investigation aims to analyze and classify the electrostatic items of the Conceptual Survey of Electricity and Magnetism (CSEM) in order to decide which items are useful and which ought to be modified. By performing a psychometric analysis on each of these items, mostly based on the Item Response Curve's (IRC) graphs' evaluation, this study will target and determine the items that fit the best for the students enrolled in the Electricity and Magnetism undergraduate course at a private university in the north of Mexico.
Internet of Things and Security Perspectives
Authors: Kasemsap Kijpokin
Published: February 2017

This chapter reveals the overview of the Internet of Things (IoT); the IoT, Wireless Sensor Networks (WSNs), and Radio Frequency Identification (RFID); the technology of the IoT; the IoT and security concerns; the information security aspects of the IoT; the applications of the IoT in modern health care; and the implications of the IoT in the digital age. Organizations can utilize the IoT to gain the considerable cost savings by improving asset utilization, enhancing process efficiency, and increasing productivity in global operations. However, the IoT has its own challenges, such as the privacy of personal data, the lack of compatibility, and security breach. The chapter argues that utilizing the IoT and security techniques has the potential to enhance organizational performance and meet security requirements toward threat prevention in global operations.
IoT in Healthcare
Authors: Somasundaram R  , Thirugnanam Mythili
Published: February 2017

The fields of computer science and electronics have merged to result into one of the most notable technological advances in the form of realization of the Internet of Things. The market for healthcare services has increased exponentially at the same time security flaws could pose serious threats to the health and safety of patients using wearable technologies and RFID. The volume and sensitivity of data traversing the IoT environment makes dangerous to messages and data could be intercepted and manipulated while in transit. This scenario must absolutely respect the confidentiality and privacy of patient's medical information. Therefore, this chapter presents various security issues or vulnerabilities with respect to attacks and various situations how information will be attacked by the attacker in healthcare IoT. The working principle of healthcare IoT also discussed. The chapter concludes the performance of various attacks based on the past work. In the future this work can be extended to introduce a novel mechanism to resolve various security issues in healthcare IoT.
An Experimental Research About Using Augmented Reality in Advertising for Measurement of Advertisement Liking and Effectiveness Level
Authors: Sayımer İdil , Küçüksaraç Banu
Published: February 2017

Augmented Reality (AR) added a new dimension to the brands' advertisement performance due to visuality and creativity features which combine virtuality and reality that focus on and its possibility for consumer experience. The acceleration of AR based advertisement projects; it is found out that the necessity of a research which aims to constitute the AR campaign effects on consumer behaviour in Turkey. At this context, this study aims to find out that the brands' AR campaigns' effects on consumers and the benefits for the company due to advertisement liking level and advertisement effectiveness variables. For this purpose, Cafe Crown, Laviva, Vivident, Sütas Ayran brands AR based campaign which are operated via Blippar in Turkey are analysed with an experimental research which is applied with the participation of Kocaeli University Communication Faculty students as appraisable research. The research found out that AR ads have positive impact on total likeability and effectiveness advertising.
Violence Narration in Digital Advertising
Authors: Turgut Hasan
Published: February 2017

Human beings exist through creating narratives. In this process of existing, number one narrative is violence. Today, considering that media is included in the process of producing meaning as a means of reaching information, the significance of knowledge and experiences the human beings obtain via media should be mentioned. In this process of building meaning, violence narrative is involved in the content of many visual texts from the news, the movies to commercials. Even if media doesn't cause tendency to violence directly, it plays an important role in getting used to violence and internalizing it. In addition to this, expecting the media to give up violence narration seems like a naïve solution regarding the commercial value of it. In this context, questioning the ethics of the connection between media and violence is necessary. In this study, it is aimed to question the ethics of violence narration based on the exemplary advertisements in the commercials on television and viral advertising.
Presentación
Authors: Martinez Martín Jesus A.
Published: February 2017

Presentación
Posicionamiento de las mujeres como locutoras en las transmisiones de programas radiales en Santiago de Chile
Authors: Dodds Tomás , Amor Isabel Margarita
Published: February 2017

Este artículo busca describir el rol de las mujeres en las radios de Frecuencia Modulada que transmiten en Santiago de Chile. Para ello levanta información respecto a la cantidad de mujeres que ocupan roles de locución y observa a través de la categorización de los programas qué espacios se les han asignado. Se trata de un análisis descriptivo que discute mediante las nociones del encuadre de género, agenda setting y análisis crítico feminista la subrepresentación de las mujeres en la locución radial. Junto a esto, da cuenta de algunas relaciones entre los resultados obtenidos en esta investigación y la masculinización de los espacios públicos y de poder.
La conjugación de los esquemas conceptuales de la comedia en la crítica cinematográfica de Ángel Fernández-Santos
Authors: Planes Pedreño José Antonio
Published: February 2017

La crítica de cine no puede enfrentarse al texto fílmico soslayando sus antecedentes, es decir, el corpus de obras que configuran periodos históricos, movimientos, estilos y géneros, los cuales, muy habitualmente, ejercen una gran influencia en la composición audiovisual de nuevas películas. En el ejercicio periodístico de Ángel Fernández-Santos, uno de los críticos más influyentes durante décadas en el panorama cinematográfico español, el análisis de las cualidades y/o anomalías expresivas atribuidas a determinados largometrajes pertenecientes a la comedia descansa en una serie de esquemas conceptuales vinculados ese género, que concibe como sus mecanismos expresivos esenciales.
RELAÇÃO ENTRE O PERFIL DE LIDERANÇA DO TREINADOR E A MOTIVAÇÃO EM JOVENS JOGADORES DE FUTEBOL
Authors: Schnaider Guilherme Britto , Borges Paulo Henrique , Borean Borghi Guilherme Alexandre , De Oliveira Magossi Marcos Aurélio , Oliveira José Ricardo , Rinaldi Wilson
Published: February 2017

Resumo: O objetivo do estudo foi analisar a relação entre o estilo de liderança do treinador e a motivação de jovens futebolistas. A amostra foi composta por 99 futebolistas da cidade de Maringá-PR. Foi aplicada a Escala de Motivação para o Esporte (SMS) e a Escala de Liderança no Desporto (ELD). Para análise dos dados foi empregado o teste U-Mann Whitney e o Teste Correlação de Spearman (p<0,05). Os resultados indicaram que os atletas de ambas categorias estudadas são motivados intrinsecamente (Md= 5,75), percebem o treinador classificado na categoria reforço (Md= 4,20) e o suporte-social correlacionou-se com a motivação intrínseca (r=0,25). Conclui-se que os atletas analisados possuem motivação própria para praticar esportiva e que o treinador reforça positivamente o atleta.
Comportamento alimentar em adolescentes de Juiz de Fora
Authors: Fortes Leonardo De Sousa , Ferreira Maria Elisa Caputo , Amaral Ana Carolina Soares
Published: February 2017

O objetivo deste estudo foi avaliar o comportamento alimentar de
adolescentes de Juiz de Fora-MG, comparando-o de acordo com o sexo e
o estado nutricional. Participaram 322 adolescentes com idades entre 10
e 19 anos, de ambos os sexos. Utilizou-se o eating attitudes test (EAT-26)
para avaliar o comportamento alimentar. Aferiram-se o peso e a estatura
para calcular o índice de massa corporal (IMC). O estado nutricional foi
obtido pelos pontos de corte do IMC. Conduziu-se análise Manova para
comparar os três fatores do EAT-26 em razão do sexo e estado nutricional.
Os resultados demonstraram diferenças estatisticamente significativas nas
subescalas dieta e autocontrole oral (p<0,05) conforme o sexo. Ademais,
encontraram-se diferenças significativas nas subescalas dieta e bulimia
e preocupação com alimentos (p<0,05) segundo o estado nutricional.
Concluiu-se que o comportamento alimentar foi diferente entre os sexos e
grupos de estado nutricional.
Do corte científico à invenção de um sujeito inédito: sobre a inserção da psicanálise no campo da ciência
Authors: De Oliveira Flávia Lana Garcia
Published: February 2017

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Conhecendo os paradigmas catequéticos
Authors: Maria do Carmo Solange , Dos Santos Alex Cristiano
Published: February 2017

A catequese, especialmente a partir da Reforma Protestante, foi conduzida por paradigmas que emergiram das necessidades de cada tempo. Com o cisma protestante, a fé católica se viu impelida a desenvolver uma catequese capaz de afirmar sua identidade (cristã-católica) frente ao florescimento e crescimento da Igreja protestante. Surge, aqui a catequese doutrinária, alicerçada nos catecismos (primeiro paradigma). Esta será abalada pelo advento da razão moderna, que traz consigo novas demandas. Frente a essas demandas, emerge um novo paradigma catequético (segundo paradigma) que, buscando responder os anseios do homem moderno, não parte mais da doutrina, mas da concretude existencial dos sujeitos. Todavia, nenhum destes paradigmas, já consolidados, mostra-se suficiente para atender as necessidades da catequese frente às reivindicações do homem contemporâneo. Surge, assim, o terceiro paradigma catequético, ainda em construção, que busca um retorno à pedagogia “original da fé”, a pedagogia da iniciação, da proposta, capaz de proporcionar uma experiência pessoal do Ressuscitado, transformando as vidas e as ações dos indivíduos contemporâneos e de suas comunidades. 
Mice in a cage
Authors: Riddell Claire
Published: February 2017

Students will engage in a both-addends-unknown problem to explore the different ways that seven mice can be arranged in two cages. Students will work with combinations of seven and have the opportunity to justify and reason about the total number of combinations possible. Students will also make generalizations about the relationship between the number of mice and the total number of combinations possible. Each month, elementary school teachers are presented with a problem along with suggested instructional notes; asked to use the problem in their own classrooms; and encouraged to report solutions, strategies, reflections, and misconceptions to the journal audience.
Bridging Informal and Formal Reasoning
Authors: Hodges Thomas E. , Johnson Malisa , Roy George J.
Published: February 2017

This fourth-grade task focuses on measures of center to build on students' intuitive thinking.
КВАЛИТЕТ УНИВЕРЗИТЕТСКЕ НАСТАВЕ И СПОСОБНОСТ АПСТРАКТНОГ МИШЉЕЊА СТУДЕНАТА
Authors: Скопљак Маргарета , Зечевић Ивана , Дробац Милица
Published: February 2017

У овом истраживању бавили смосе питањем односа једне од способно-сти апстрактног мишљења (синтезаинформација) и студентске перцеп-ције квалитета универзитетске на-ставе. У ту сврху примијенили смодва инструмента. Први инструмент(скала процјене) смо преузели, и носиназив Студентска перцепција квали-тета универзитетске наставе (пре-вод оригинала: Perceptions of ScienceClasses Survey) (Kardash and Wallace,2001, према: Сузић 2005). Обухватапет фактора: педагошке страте-гије, заинтересованост за поучавање,заинтересованост студената за на-ставу и перцепција компетенције, па-сивно учење и оцјена и повратна спре-га. Други инструмент је био тест уоблику три кратке приче за које сустуденти имали задатак да одговорео чему прича говори и да објасне својодговор.Добијени подаци указују на по-стојање статистички значајне по-везаности између субскале Заинтере-сованост за поучавање и скора на те-сту за процјену способности синтезеинформација на нивоу апстрактнемисли, што указује на израженије ап-страктно мишљење студената. Тестза процјену способности синтезе ин-формација на нивоу апстрактне мис-ли не корелира статистички значајноса осталим субскалама Студентскеперцепције универзитетске наставе.
Tumor Hypoxia on 18F-fluoromisonidazole Positron Emission Tomography and Distant Metastasis From Head and Neck Squamous Cell Carcinoma
Authors: Gui Chengcheng , Wray Rick , Schöder Heiko , Deasy Joseph O. , Grkovski Milan , Humm John L. , Wong Richard J. , Sherman Eric J. , Riaz Nadeem , Lee Nancy Y.
Published: September 2024

Importance

Given high rates of locoregional control after definitive management of head and neck squamous cell carcinoma (HNSCC), better methods are needed to project distant metastasis (DM) risk. Tumor hypoxia on 18F-fluoromisonidazole (FMISO) positron emission tomography (PET) is associated with locoregional failure, but data demonstrating an association with DM are limited.

Objective

To determine whether tumor hypoxia on FMISO PET is associated with DM risk after chemoradiotherapy (CRT) for HNSCC.

Design, Setting, and Participants

This cohort study assessed patients with HNSCC enrolled in 2 prospective clinical trials at a single academic referral center from 2004 to 2021 in which participants received FMISO PET before and during CRT. Data analysis occurred from May 2023 to May 2024.

Exposures

FMISO PET scans before and 1 to 2 weeks after starting CRT were evaluated for tumor hypoxia by nuclear medicine physicians.

Main Outcomes and Measures

The primary outcome was DM, defined as biopsy-proven HNSCC outside the primary site and regional lymph nodes. Time to DM was modeled with competing risk regression, with death as a competing risk. Overall survival (OS) was assessed secondarily and modeled with Cox regression.

Results

Among 281 patients (median [range] age at CRT, 58.7 [25.5-85.6] years; 251 male [89.3%]) included in this study, 242 (86.1%) had oropharyngeal primary cancer, and 266 (94.7%) had human papillomavirus–positive disease. Of all patients, 217 (77.2%) had T stage 1 or 2, and 231 patients (82.2%) had N stage 2b or less. De-escalated 30 Gy CRT was delivered to 144 patients (51.2%), and the remainder received standard 70 Gy CRT. On FMISO PET examination, 73 patients (26.0%) had hypoxia-negative disease before CRT, 138 patients (49.1%) had hypoxia-positive disease before CRT and then hypoxia-negative disease during CRT, and 70 patients (24.9%) persistently had hypoxia-positive disease before and during CRT. At a median (IQR) 58 (46-91) months of follow-up, 12 DM events and 22 deaths were observed. Persistent intratreatment hypoxia was associated with increased DM risk (hazard ratio, 3.51; 95% CI, 1.05-11.79; P = .04) and worse OS (hazard ratio, 2.66; 95% CI, 1.14-6.19; P = .02). No patients with hypoxia-negative disease before CRT experienced DM.

Conclusions and Relevance

In this cohort study using pooled analysis of prospective nonrandomized clinical trials incorporating FMISO PET in the definitive management of HNSCC, persistent intratreatment hypoxia was associated with increased risk of DM and worse OS. Conversely, all patients with hypoxia-negative disease before treatment remained free of DM. These findings suggest that pretreatment and intratreatment FMISO PET results may serve as biomarkers for DM risk and aid in identifying candidates for escalated therapeutic strategies.
Evaluation of Progression From Preclinical to Systemic Autoimmune Rheumatic Disease: Novel Use of the European Alliance of Associations for Rheumatology/American College of Rheumatology Systemic Lupus Erythematosus Classification Criteria as an Outcome Measure
Authors: Johnson Sindhu R. , Alahmari Hana , Bonilla Dennisse , Ahmad Zareen , Bookman Arthur , Hiraki Linda T. , Silverman Earl , Touma Zahi , Movahedi Mohammad , Wither Joan E.
Published: September 2024

Objective

Our objective was to evaluate the development of a systemic autoimmune rheumatic disease (SARD) in undifferentiated and asymptomatic individuals with antinuclear antibodies (ANAs). We comparatively evaluated those who did and did not develop a SARD and fulfillment of classification criteria.

Methods

We conducted a cohort study of undifferentiated and asymptomatic patients with ANAs who were assessed for the development of a SARD. The primary outcome was a diagnosis of a SARD over a two‐year period. We assessed fulfillment of classification criteria. Risk ratios (RRs) were used to evaluate differences among those who did and did not progress to a SARD.

Results

We evaluated 207 asymptomatic ANA‐positive or undifferentiated patients, of whom 23 (11%) progressed to a SARD, whereas 187 (89%) did not progress. Progressors developed systemic lupus erythematosus (SLE) (n = 11 [48%]), Sjögren disease (n = 5 [22%]), systemic sclerosis (n = 3 [13%]), rheumatoid arthritis (n = 1 [4%]), and from ANA‐positive to undifferentiated connective tissue disease (n = 3 [13%]). Fever (RR 0.89, 95% confidence interval [CI] 0.8–0.93) and antiphospholipid antibodies (RR 0.89, 95% CI 0.87–0.93) occurred less frequently, whereas arthritis (RR 1.74, 95% CI 1.20–2.55) occurred more frequently in progressors. Progressors to SLE had arthritis (91%), whereas none developed delirium, psychosis, or nephritis. Among patients with SLE, 100% fulfilled the EULAR/American College of Rheumatology (ACR) SLE criteria (sensitivity 91.7%, specificity 100%), whereas 73% fulfilled the 1997 ACR SLE criteria (sensitivity 81.8%, specificity 98.9%).

Conclusion

Most undifferentiated/asymptomatic individuals with ANA do not progress to a SARD over a two‐year period. SLE progressors appear to have mild disease in the short term. The EULAR/ACR SLE criteria have improved ability to identify those who develop SLE.
Diabetic Microenvironment‐Unlocked BioHJzyme with H2S Evolution for Robust Anti‐Pathogens and Hyperinflammatory Wound Regeneration Through TGF‐β/Smad Pathway
Authors: Gao Xiangyu , He Miaomiao , Chen Wanxi , Wang Zuyao , Li Yunfei , Bai Ding , Yin Guangfu , Shu Rui , Deng Yi , Yang Weizhong
Published: September 2024

Deferred diabetic skin healing is an ever‐growing complication owing to the hyperglycemic microenvironment, which accelerates the generation of advanced glycated end products (AGEs) and provides a hotbed for pathogenic infection. Here, the H2S‐evolving bio‐heterojunction enzyme (BioHJzyme), which is consisted by MXene/FeS2 and glucose oxidase (GOx) is devised. It presents glutathione peroxidase (GPx)‐ and peroxidase (POD)‐mimetic antibacterial activity for anti‐pathogens and wound regeneration by AGEs depression. The GOx catalyzes glucose, resulting in reducing the bacterial nutrient and supplying H2O2. The POD‐mimetic activity of the BioHJzyme catalyzes the H2O2 to hydroxyl radical (•OH) with a turnover number of 4.45 × 10−1 s−1, while the GPx‐mimetic activity of it consumes glutathione for further •OH accumulation. The anti‐pathogens can be enhanced by near infrared laser (NIR) irradiation owing to the efficient separation of electron‐hole pairs originated from the heterostructure, which presents NIR‐activatable •OH and 1O2 production. Moreover, the BioHJzyme evolves H2S in acidic environment, acting as an H2S donor, which protects cells around the wound from oxidative damage and AGEs, rescues mitochondrial respiration, improves the extracellular matrix deposition and ameliorates dysfunction of fibroblasts for diabetic skin regeneration through TGF‐β/Smad pathway. The work provides a proof‐of‐concept for bacteria‐invaded diabetic wound regeneration via H2S‐evolving BioHJzyme.
Bi3TiNbO9/Bi2S3 Heterojunction for Efficient Photosynthesis of H2O2 in Pure Water
Authors: Teng Yuan , Ning Ling‐Ling , Tan Chao‐Wen , Zhao Jing , Xiong Ya‐Wen , Zou Hong‐Lin , Ye Zi‐Ming , Zhang Xue‐Ming , Kuang Dai‐Bin , Li Youji
Published: September 2024

Heterojunction engineering has been deemed one of the most promising strategies for promoting charge separation and improving solar‐to‐chemicals efficiency. Howbeit, constructing well‐defined nanoheterojunction with superior photocatalytic activity for H2O2 generation and a clear reaction mechanism remains a formidable challenge. Herein, an in situ vulcanization way to synthesize an intriguing 2D/1D Bi3TiNbO9/Bi2S3 heterojunction by growing Bi2S3 nanorods on Bi3TiNbO9 microsheet is used for the first time, where an S‐scheme charge transfer mechanism is formed that facilitates the spatial separation of charge carriers. Moreover, the in situ grown Bi2S3 on Bi3TiNbO9 can optimize the interfacial electronic structure and the reaction energy barriers. As a result, the H2O2 yield rate for Bi3TiNbO9/Bi2S3 can reach 810(2) µmol g−1 h−1 without any sacrificial agents and cocatalysts, ≈6.18 and ≈18.0 times of pristine Bi3TiNbO9 and Bi2S3, respectively. Importantly, the heterojunction unveiled unprecedented stability, remaining ≈95.46(2)% of the initial one after 13 continuous cycles. This work highlights an innovative in situ vulcanization strategy to engineer oxide perovskite/metal sulfide nanocomposite catalysts for artificial photosynthesis of H2O2, opening new opportunities for achieving highly efficient photocatalyst systems.
Traditional Chinese Medicine (TCM)‐Inspired Fully Printed Soft Pressure Sensor Array with Self‐Adaptive Pressurization for Highly Reliable Individualized Long‐Term Pulse Diagnostics
Authors: Wang Xin , Wu Guirong , Zhang Xikuan , Lv Fei , Yang Zekun , Nan Xueli , Zhang Zengxing , Xue Chenyang , Cheng Huanyu , Gao Libo
Published: September 2024

Reliable, non‐invasive, continuous monitoring of pulse and blood pressure is essential for the prevention and diagnosis of cardiovascular diseases. However, the pulse wave varies drastically among individuals or even over time in the same individual, presenting significant challenges for the existing pulse sensing systems. Inspired by pulse diagnosis methods in traditional Chinese medicine (TCM), this work reports a self‐adaptive pressure sensing platform (PSP) that combines the fully printed flexible pressure sensor array with an adaptive wristband‐style pressure system can identify the optimal pulse signal. Besides the detected pulse rate/width/length, “Cun, Guan, Chi” position, and “floating, moderate, sinking” pulse features, the PSP combined with a machine learning‐based linear regression model can also accurately predict blood pressure such as systolic, diastolic, and mean arterial pressure values. The developed diagnostic platform is demonstrated for highly reliable long‐term monitoring and analysis of pulse and blood pressure across multiple human subjects over time. The design concept and proof‐of‐the‐concept demonstrations also pave the way for the future developments of flexible sensing devices/systems for adaptive individualized monitoring in the complex practical environments for personalized medicine, along with the support for the development of digital TCM.
3D DNAzyme Motor Nanodevice With Self‐Powered FRET Amplifier and Self‐Supplied H2O2 for Enhancing Human Neutrophil Elastase Profiling and Chemodynamic Therapy in Lung Tumor
Authors: Du Huiyan , Xu Ensheng , Xu Yihan , Xue Qingwang , Xu Hongxia , Song Jibin
Published: September 2024

The development of theragnostic nanosystems integrating FRET (fluorescence resonance energy transfer) imaging and chemodynamic therapy (CDT) for accurate diagnosis and effective treatment of lung tumors is still a big challenge. Herein, a peptide‐assembled 3D DNAzyme motor nanodevice is engineered for a self‐powered FRET amplifier profiling human neutrophil elastase (HNE) and self‐supplied H2O2 enhancing CDT. The nanodevice is prepared by depositing AuNPs on ZIF‐8, in which ZIF‐8 co‐loaded the lysosomal targeting peptide‐modified copper peroxides (PCPs) and hairpins (H1, H2, and H3), AuNPs are co‐labeled by DNAzyme‐peptide (DP) conjugate and H3. In the tumor micro‐environment, HNE driven 3D DNAzyme walker followed by an exponential amplification constructed by a synergistic cross‐activation between hybridization chain reaction and DNAzyme, generating a self‐powered FRET amplifier. The FRET amplifier specifically measures HNE with a sensitivity of 0.026 pM, and successfully images exogenous HNE in living cells and monitors HNE in mouse models. Moreover, the PCPs can target lysosomes, reducing lysosome escape. The self‐supplying H2O2 undertaken by PCPs improves the Cu (II)‐catalyzed Fenton‐like reaction, effectively causing cell apoptosis to inhibit tumor growth. Significantly, the nanodevice successfully screens inhibitors and discriminates the HNE level in normal and lung cancer tissues, suggesting that the nanodevice provides an effective tool for the diagnosis and treatment of lung tumors.
Balancing Carrier Dynamics in Oxygen‐Vacancy‐Tuned Amorphous Ga2O3 Thin‐Film Self‐Powered Photoelectrochemical‐Type Solar‐Blind Photodetector Arrays for Underwater Imaging
Authors: Ding Ke , Zhang Hong , Jiang Jili , Luo Jiangshuai , Wu Rouling , Ye Lijuan , Tang Yan , Pang Di , Li Honglin , Li Wanjun
Published: September 2024

Underwater imaging technology plays a pivotal role in marine exploration and reconnaissance, necessitating photodetectors (PDs) with high responsivity, fast response speed, and low preparation costs. This study presents the synergistic optimization of responsivity and response speed in self‐powered photoelectrochemical (PEC)‐type photodetector arrays based on oxygen‐vacancy‐tuned amorphous gallium oxide (a‐Ga2O3) thin films, specifically designed for solar‐blind underwater detection. Utilizing a low‐cost one‐step sputtering process with controlled oxygen flow, a‐Ga2O3 thin films with varying oxygen vacancy (VO) concentrations are fabricated. By balancing the trade‐offs among electrocatalytic reactions, charge transfer, carrier recombination, and trapping, both the responsivity and response speed of a‐Ga2O3‐based self‐powered PEC‐PDs are simultaneously improved. Consequently, the optimized PEC‐PDs demonstrated exceptional performance, achieving a responsivity of 33.75 mA W−1 and response times of 12.8 ms (rise) and 31.3 ms (decay), outperforming the vast majority of similar devices. Furthermore, a pronounced positive correlation between anomalous transient photocurrent spikes and the concentration of VO defects is observed, offering compelling evidence for VO‐mediated indirect recombination. Finally, the proof‐of‐concept solar‐blind underwater imaging system, utilizing an array of self‐powered PEC‐PDs, demonstrated clear imaging capabilities in seawater. This work provides valuable insight into the potential for developing cost‐effective, high‐performance a‐Ga2O3 thin‐film‐based PEC‐PDs for advanced underwater imaging technology.
Optimizing Molecular Packing and Film Morphology in Organic Solar Cells via Additive‐Modulated Growth Processes
Authors: Cui Xinyue , Ji Yitong , Liu Yuqiang , Ma Xueqing , Li Hongxiang , Cheng Pei , Huang Wenchao , Bo Zhishan
Published: September 2024

Controlling the packing feature and film morphology of active layers is the precondition for achieving highly efficient organic solar cells (OSCs). The growth transition of donors and acceptors from solution to solid films plays an intrinsic role in shaping these features. In this study, two simple additives, cyanobenzene (CNB) and 1,4‐dicyanobenzene (DCNB), are presented to modulate the growth process of active layers to investigate the impact of growth behaviors on molecule packing quality, film morphology, and device performances. Both additives prolong the nucleation and growth period of active layers, resulting in improved molecular packing quality, domain purity, and crystallization. This optimization enhances charge extraction efficiency as well as reduces charge recombination losses. Consequently, devices based on D18:BTP‐eC9‐4F processed with additives obtain a 19.43% power conversion efficiency (PCE). Furthermore, a PCE of 14.35% is achieved for bladed‐coated organic solar modules on 5 cm × 5 cm substrates. These findings underscore the importance of growth processes on film quality and illustrate their fundamental relationship, which promises further advancements in OSC technology.
Mechano‐Electrochemical Behavior of Nanostructured Li‐ and Mn‐Rich Layered Oxides with Superior Capacity Retention and Voltage Decay for Sulfide‐Based All‐Solid‐State Batteries
Authors: Song Gawon , Lee Suyeon , Kim Taehun , Jung Min Soo , Kim Kanghyeon , Choi Seung Hyun , Lee Seunghyun , Park Junsung , Lee Minseon , Park Chanhwi , Kwon Mi‐Sook , Lee Kyu Tae
Published: September 2024

Li‐ and Mn‐rich layered oxides (LMROs) are recognized as promising cathode materials for lithium‐ion batteries (LIBs) due to their high specific capacity and cost efficiency. However, LMROs encounter challenges such as manganese dissolution in electrolytes and the release of oxygen gas from irreversible oxygen redox reactions, leading to structural degradation and voltage decay that reduce energy density. Consequently, recent research has shifted toward employing LMROs in all‐solid‐state batteries (ASSBs), where Mn dissolution is negligible. Herein, nanostructured LMROs demonstrate superior electrochemical compatibility with sulfide‐based solid electrolytes in ASSBs compared to conventional LIBs. Nanostructured LMRO exhibits outstanding capacity retention (97.1% after 1300 cycles at 30 °C) with significantly suppressed voltage decay. Furthermore, the initial electrochemical activation of Li2MnO3 domains within LMRO is explored in terms of the mechano‐electrochemical interactions in the composite cathode. At elevated temperatures, interfacial degradation accelerates due to the chemical oxidation of Li6PS5Cl solid electrolytes, driven by oxygen released from LMRO. To address this, LMRO surfaces are modified with thioglycolic acid through esterification, suppressing interfacial degradation of Li6PS5Cl and ensuring stable capacity retention over 500 cycles at 60 °C. These findings underscore the potential of LMRO materials as promising cathode options for ASSBs, surpassing those used in LIBs.
Surface Lattice Engineering Enables Efficient Inverted Perovskite Solar Cells
Authors: Zhang Tianchi , Liu Tiantian , Wang Xingtao , Zhou Yuhan , Wen Yehui , Li Junhang , Bao Chunqiong , Wan Li , Yu Xuegong , Ning Weihua , Wang Yong , Yang Deren
Published: September 2024

State‐of‐the‐art inverted perovskite solar cells (PSCs) have exhibited considerable promise for commercialization due to their prospective stability. However, the intricate crystallization of halide perovskite, especially for multi‐component perovskites, not only distorts the surface lattice from its ideal form but also introduces numerous unsaturated dangling bonds to form surface defects, which can easily lead to reduced stability and poor performance. Herein, a surface lattice engineering is developed by coupling surface unsaturated ions and regulating ion bonding lengths/angles to achieve efficient and stable inverted PSCs. The renovated surface lattice not only eliminates shallow/deep level defects on the surface of perovskite, but also enhances photo/thermal stability of the materials. Moreover, the surface lattice engineering contributes to uniform potential surface, and improves energy‐level alignment at the interfaces of the perovskite and C60 carrier transport layer, enhancing charge carrier extraction and transportation. Finally, the champion PSC delivers an impressive efficiency of 25.82% (certified 25.5%). Moreover, these PSCs exhibit excellent operational stability, retaining 94% initial efficiency after more than ≈1 000h maximum power point test.
Intrinsic Electron Transfer in Heteronuclear Dual‐Atom Sites Facilitates Selective Electrocatalytic Carbon Dioxide Reduction
Authors: Tang Qi , Hao Qi , Zhu Qian , Wu Junxiu , Huang Keke , Liu Kai , Lu Jun
Published: September 2024

The metal–metal (M1–M2) interactions in heteronuclear dual‐atom catalysts (HNDACs) significantly optimize the electronic properties of the active sites, resulting in the promotion of the reaction kinetics in electrocatalysis. However, the regulation mechanisms in these M1–M2 dual‐atom sites still remain unclear. Herein, the intrinsic electron transfer in Fe–Zn dual‐atom sites are revealed for facilitating electrocatalytic carbon dioxide reduction (ECO2R) to carbon monoxide (CO). The electronegativity difference between the Fe and Zn centers induces the specific electron transfer from Zn to Fe, which regulates the electron structures of the active Zn sites, leading to the optimized reaction pathway of CO2‐to‐CO conversion on these sites. The Fe–Zn HNDAC (FeZnNC) exhibits superior ECO2R performances than the single‐atom Fe/Zn catalysts (FeNC and ZnNC) in the typical H‐cell system, the maximum CO partial current density on FeZnNC reaches more than 3.3 and 1.8 folds of those on FeNC and ZnNC, respectively. More importantly, in a strongly acidic medium (pH = 1), FeZnNC achieves CO Faradaic efficiencies greater than 94% in the current density range of 100–400 mA cm−2. This work uncovers the intrinsic electron transfer at the heteronuclear diatomic sites, providing new insights for the rational design of high‐performance HNDACs toward industrial electrocatalysis.