bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Video-Taped Instructional Strategy and Retention of Senior Secondary 2 Chemistry Students in Lagos State
Authors: C. Job Gabriel , Opeyemi Akinboboye 
Published: April 2020

This research investigated the effects of video-taped instructional strategy on the academic achievement and retention of senior secondary 2(SS2) chemistry students in lagos state. The continuous decimal academic achievement of students in this core science subject has been of major concern to stake holders in the education industry in lagos state in particular. The study adopted an experimental design of pretest – posttest factorial design. The population for this study was made up of the 4500 chemistry students in Ikorodu and Kosofe LGAs, while the sample comprised 93 SS2 chemistry students gotten through multi staged method. The instrument used was Chemistry Achievement Test (CAT). The instrument was validated by experts in Educational Technology and Measurement and Evaluation while the reliability was derived through a test – retest method. Pearson product moment correlation coefficient ® was used to arrive at 0.78. Mean and standard deviation were used to answer the research questions, which indicated that students achieved better when taught with video-taped than conventional methods. On the other hand, t-test was used to analyze the hypothesis, which indicated significant difference between students taught with video-taped and conventional method, amongst others. And it was recommended that video-taped instructional strategies by used regularly in senior secondary schools in Lagos state amongst others.
High Temperature Solution Nitriding of Stainless Steels; Current Status and Future Trends
Authors: Christiansen T. L. , Villa M. , Tibollo C. , Dahl K. V. , Somers M. A. J. 
Published: April 2020

AbstractThis contribution provides an overview of the concepts of high temperature solution nitriding (HTSN) and the state of the art of the technology. It shows how HTSN can be applied to different classes of stainless steels. New advances of HTSN are presented, in particular the combination of HTSN with low temperature surface hardening, LTSH, is addressed: HTSN is an excellent “pre-treatment” for LTSH for austenitic, duplex, ferritic and martensitic stainless steels. Examples of combined HTSN + LTSH treatments of duplex and martensitic stainless steels are shown.
Penerapan Metode Small Group Discussion Terhadap Motivasi Belajar Siswa
Authors: Ahmad Kamaluddin , Nurma Siti 
Published: April 2020

Kurangnya minat atau motivasi belajar siswa pada mata pelajaran Pendidikan Pancasila dan Kewarganegaraan dikarenakan beberapa hal. Diantaranya; media pembelajaran yang digunakan guru kurang optimal, rendahnya motivasi belajar siswa membuat menurunnya prestasi. Tujuan penelitian ini adalah untuk mengetahui pengarauh pembelajaran metode small group discussion terhadap motivasi belajar. Pembelajaran small group discussion, small berarti kecil, group berarti kelompok, dan discussion berarti bertukar pikiran dan pendapat. Sehingga dapat disimpulkan bahwa small group discussion adalah tukar pendapat untuk memecahkan suatu masalah/mencari kebenaran di dalam kelompok kecil. Metode penelitian yang digunakan adalah penelitian kuantitatif, dengan sampel penelitian berjumlah 36 orang siswa, teknik pengumpulan data yang digunakan yakni observasi, angket dan dokumentasi. Sedangkan teknik analisis data yang digunakan adalah metode analisis deskriptif dan analisis regresi satu predokator. Hasil penelitian menunjukkan bahwa penerapan metode small group discussion terhadap motivasi belajar siswa dapat mempengaruhi motivasi siswa. Jadi adanya metode tersebut sangat membantu antusias siswa untuk belajar semakin giat dan aktif. Lack of interest or motivation to learn students in the subjects of PPKn, learning media used by the teachers of PPKn less optimal, low motivation to learn students make a decrease in learning achievement. The purpose of this research is to learn small group discussion of learning motivation. Small group discussion is small, group means group, and discussion means exchanging thoughts and opinions. So it can be concluded that Small group discussion is a brainstorm to solve a problem/find the truth in small groups. This method of research is quantitative research, research samples amounting to 36 students, data collection techniques such as observation, poll and documentation while the data analysis technique used method of descriptive analysis and regression analysis of one predozer. Based on the results shows that the implementation of small group discussion methods of learning motivation to students can affect the motivation of students. So there is a very helpful method for students to learn increasingly active and enterprising.
ХОЛОКОСТ В ОККУПИРОВАННЫХ РЕГИОНАХ СССР: ПРОБЛЕМА ПЕРИОДИЗАЦИИ И РЕГИОНАЛЬНЫХ ОСОБЕННОСТЕЙ
Authors: Kruglov Alexander 
Published: April 2020

В статье критически рассматриваются и анализируются имеющиеся варианты периодизации Холокоста в бывшем СССР, предложенные израильским историком и исследователем Холокоста Ицхаком Арадом и российским историком Ильей Альтманом. Как Арад, так и Альтман в основу периодизации кладут количественные изменения и внешние по отношению к Холокосту факторы, в то время как, по мнению автора статьи, научная периодизация должна основываться на качественных изменениях и внутренней логике развития исследуемого явления (в нашем случае – Холокоста). Исходя из этих принципов, автор приходит к выводу, что в Холокосте в СССР можно выделить только два этапа. Первый этап – с 22 июня 1941 г. до перехода к поголовному истреблению евреев и (второй этап) – с этого момента до полного освобождения советской территории. На основе изучения соответствующей научной литературы, немецких и советских документов (донесения немецких карательных органов, акты ЧГК) автор констатирует, что в разных оккупированных регионах СССР переход к поголовному истреблению евреев произошел не одномоментно, а в разное время – в Латвии и в Белоруссии (Белостокская область) уже в начале июля 1941 г., в Литве в середине августа 1941 г., в Украине в третьей декаде августа 1941 г. По мнению автора, в основе этой разномоментности лежал человеческий фактор, а сам факт начала поголовного истребления евреев уже в начале июля 1941 г. говорит о том, что принципиальное решение об уничтожении советских евреев как евреев большевистских (так называемый «приказ фюрера», т. е. Гитлера) было принято, скорее всего, до нападения Германии на СССР. В статье приводятся послевоенные показания ряда бывших «фюреров» команд СД о том, что о «приказе фюрера» им было объявлено еще до начала «кампании против России».
ГОЛОКОСТ В ІСТОРИЧНІЙ ПОЛІТИЦІ ЛИТВИ ТА УКРАЇНИ 1991–2017
Authors: Romantsov Roman 
Published: April 2020

Статтю присвячено порівнянню теми пам’яті про Голокост в історичній політиці Литви та України. Автор розкриває історію включення цієї теми до політичного дискурсу та офіційних історичних наративів. У статті висвітлюється використання інституціями влади України та Литви теми пам’яті про Голокост у внутрішній та зовнішній політиці. Зазначено, що очільники Литви одними з перших на пострадянському просторі почали використовувати тему пам’яті про Голокост з метою демонстрації практик, притаманних політиці країн Європейського Союзу. Натомість в Україні тема пам’яті про Голокост у міжнародній політиці використовувалася не так активно. У дослідженні йдеться про те, що для українського суспільства зміни увічнення однієї з найбільших трагедій XX ст. в контексті проголошення політики подальшої інтеграції з Європейським Союзом відбувалися повільно. Автор звертає увагу, що в офіційний історичній політиці як Литви, так і України, з одного боку, характерною рисою є героїзація учасників антирадянського підпілля, а з іншого – існує замовчування, а іноді навіть і «вибілювання» негативної політики стосовно єврейського населення. Якщо в Литві героїзація очільників національного руху спротиву розпочалася відразу після проголошення незалежності в 1991 р., то в Україні цей процес розгорнувся лише на початку 2000-х рр. Така історична політика спонукала наукові кола до обговорення дій політиків і засвідчила відмінності у трактуванні та розумінні подій минулого. Використання однобокого образу лідерів антирадянського руху спротиву під час Другої світової війни викликало критику з боку Ізраїлю та науковців інших країн. У підсумку автор зазначає, що включення пам’яті про Голокост в офіційні наративи України та Литви демонструє подальший процес розвитку толерантного ставлення до Іншого в пострадянських суспільствах.
NON-NIPPED MEMORY. THE HOLOCAUST IN THE SOVIET WAR MEMOIRS
Authors: Shatalov Denys 
Published: April 2020

The article addresses the presentation of the mass murder of Jews during WWII in the Soviet printed production. An overall trend of ignoring the topic of the Holocaust in the Soviet media discourse is unquestioned. Yet, (non)presentation of the mass destruction of Jews in the Soviet literature, which is commonly emphasized by the researches, needs clarification. If we look at the Soviet literature on the Great Patriotic War (including fiction prose), we can trace a phenomenon described in this article through war memoirs. Alongside official ignoring of the Holocaust in the Soviet Union, the whole post-war period experienced mass publishing and re-publishing of memoir books which provided direct references to the murder of Jews by the Nazis during the war. Herewith, combatants’ memoirs would often touch very briefly on the murders of Jews, but give no explanations. Such reference style implies that the authors targeted the readers’ background awareness. Detailed descriptions of Jewish discrimination, segregation, getthoisation and murder are found in the memoirs of former prisoners of war and partisans. The account of Nazi persecution of the Jews is an integral part of the stories of everyday life in the occupied territory, which often represents the major piece of the narrative. Under certain ideology, the mention of the murders of Jews was intentionally instrumentalized by the Soviet memoir writers seeking to demonstrate a criminal nature of Nazi collaborators. As can be inferred from the Soviet war memoirs, we are not supposed to simplify a clear-cut attitude of ignoring and should conceptualize the phenomenon of «non-nipped memory» in semi-official narratives. Soviet narratives, particularly war memoirs, did not highlight Nazi persecution of the Jews as a separate phenomenon; although described in detail, it was seen only as a part of the «new order». In the Soviet setting, we do encounter ignoring of the Holocaust (as a separate phenomenon), but at the same time, although with certain limitations, the memory of the mass murder of the Soviet Jews was quite actively reflected in war memoirs.
Changes in Oxidative Stress and Acid-Base Balance in Men and Women Following Maximal-Intensity Physical Exercise
Authors: WIECEK M. , MACIEJCZYK M. , SZYMURA J. , SZYGULA Z. 
Published: April 2020

Oxidative stress may be caused by an increased rate of ATP resynthesis during physical exercise. The aim of this study was to compare changes in the prooxidant-antioxidant state of blood plasma between men and women after maximal-intensity exercise, and to assess the relationship between these changes and the value of the maximal oxygen uptake (VO2max) as well as between these changes and the value of post-exercise disruptions in acid-base balance. Study participants comprised 10 women (20.7±0.5 years) and 10 men (22.3±0.5 years) who were physically active but did not engage in competitive sports training. VO2max was determined via treadmill incremental test (VO2max relative to body mass: 44.48±1.21 ml/kg/min and 59.16±1.55 ml/kg/min for women and men, respectively). The level of acid-base balance indicators (ABB), lactate concentration (La-), the level of total oxidative status (TOS), the level of total antioxidative capacity (TAC), and uric acid (UA) concentration were measured before and after the test. An oxidative stress indicator (OSI) was also calculated. Men showed a significant post-exercise increase in the level of TOS and OSI, while women showed a significant post-exercise increase in the level of TAC. Post-exercise changes in UA concentration were insignificant. Post-exercise changes in TOC in men depended on the absolute values of VO2max, on VO2max/LBM, and on post-exercise changes in La‑ concentration.
Lisinopril Alters Contribution of Nitric Oxide and KCa Channels to Vasodilatation in Small Mesenteric Arteries of Spontaneously Hypertensive Rats
Authors: ALBARWANI S. , AL-SIYABI S. , AL-HUSSEINI I. , AL-ISMAIL A. , AL-LAWATI I. , AL-BAHRANI I. , TANIRA M. O. 
Published: April 2020

To investigate lisinopril effect on the contribution of nitric oxide (NO) and KCa channels to acetylcholine (ACh)-induced relaxation in isolated mesenteric arteries of spontaneously hypertensive rats (SHRs). Third branch mesenteric arteries isolated from lisinopril treated SHR rats (20 mg/kg/day for ten weeks, SHR-T) or untreated (SHR-UT) or normotensive WKY rats were mounted on tension myograph and ACh concentration-response curves were obtained. Westernblotting of eNOS and KCa channels was performed. ACh-induced relaxations were similar in all groups while L-NMMA and indomethacin caused significant rightward shift only in SHR-T group. Apamin and TRAM-34 (SKCa and IKCa channels blockers, respectively) significantly attenuated ACh-induced maximal relaxation by similar magnitude in vessels from all three groups. In the presence of L-NMMA, indomethacin, apamin and TRAM-34 further attenuated ACh-induced relaxation only in SHR-T. Furthermore, lisinopril treatment increased expression of eNOS, SKCa and BKCa proteins. Lisinopril treatment increased expression of eNOS, SKCa, BKCa channel proteins and increased the contribution of NO to ACh-mediated relaxation. This increased role of NO was apparent only when EDHF component was blocked by inhibiting SKCa and IKCa channels. Such may suggest that in mesenteric arteries, non-EDHF component functions act as a reserve system to provide compensatory vasodilatation if (and when) hyperpolarization that is mediated by SKCa and IKCa channels is reduced.
El COVID 19: Impacto psicológico en los seres humanos
Authors: Piña-Ferrer Lenys 
Published: April 2020

El estudio se desarrolló con el propósito de analizar los impactos psicológicos que produce el COVID 19 en los seres humanos. Es una investigación de carácter analítica, exploratoria con diseño documental, bibliográfico, a fin de comprender el significado y efectos que produce en los individuos esta enfermedad. Entendiendo que los individuos al ser sometidos a situaciones de incertidumbre por lo general, presentan reacciones de diverso índole psicológico. En cuanto a sus resultados por ser una enfermedad contagiosa es importante la educación no solo por parte de los organismos del Estado sino también de los miembros del grupo familiar y del paciente en si para evitar caer en estados depresivos o síntomas estresores puesto que los mismos pueden durar desde meses hasta años.
Sign of Hall coefficient in nearest-neighbor hopping conduction in heavily Al-doped p-type 4H-SiC
Authors: Matsuura Hideharu , Takeshita Akinobu , Hidaka Atsuki , Ji Shiyang , Eto Kazuma , Mitani Takeshi , Kojima Kazutoshi , Kato Tomohisa , Yoshida Sadafumi , Okumura Hajime 
Published: April 2020

Abstract
We have observed negative Hall coefficients [R
H(T)] in a nearest-neighbor hopping (NNH) conduction region in epilayers of heavily Al-doped or Al–N co-doped p-type 4H-SiC grown on n-type 4H-SiC substrates by CVD or in wafers of heavily Al–N co-doped p-type 4H-SiC fabricated by solution growth. We propose a simple physical model to explain the sign of R
H(T) in NNH conduction. According to this model, R
H(T) becomes positive when the Fermi level (E
F) is higher than the Al acceptor level (E
Al), that is, the Fermi–Dirac distribution function f(E
Al) is greater than 0.5, whereas R
H(T) becomes negative when E
F is lower than E
Al, which occurs at low temperatures. Because the dominant conduction mechanisms in heavily Al-doped or Al–N co-doped p-type 4H-SiC with Al concentrations on the order of 1019 cm−3 are band and NNH conduction at high and low temperatures, respectively, the proposed model can explain why R
H(T) becomes negative at low temperatures.
PERAN PENYULUH PERTANIAN LAPANGAN DALAM MENINGKATKAN PRODUKSI PADI SAWAH (Oryza sativa L.) DI KELURAHAN PULAU ATAS KECAMATAN SAMBUTAN KOTA SAMARINDA	(The Role of Field Agriculture Instructor to Increase Wetland Paddy Production (Oryza sativa L.) in Pulau Atas Urban Village Sambutan Subcity Samarinda City)
Authors: ANAS ANAS , JURAEMI JURAEMI 
Published: April 2020

The increase of wetland paddy production (Oryza sativa L.) is influenced by the activity of counseling by Field Agriculture Instructor (FAI). This study aimed to know the role of FAI to increase wetland paddy production in Pulau Atas Urban Village, Sambutan Subcity, Samarinda City. This research was carried out during four months from August to September 2017. Determination of respondent number was done by proportional random sampling method with the number of respondents of 31 farmers. The role of FAI to increase wetland paddy production was known by Chi Square test. The research results show FAI has role to increase wetland paddy production (Oryza sativa L.) in Pulau Atas Urban Village, Sambutan Subcity, Samarinda City, based on the result of data analysis that showed χ2calculate (36.07) > χ2table (5.59).
GHRELIN GENE POLYMORPHISMS AND EXPRESSION BOND WITH SOME GROWTH AND CARCASS TRAITS OF ROSS 308 BROILER CHICKENS
Authors: & et al. Joody 
Published: April 2020

This experiment was conducted to study the association of Ghrelin gene polymorphisms and expression levels with some productive and carcass traits of broiler chickens. Two hundred broiler chicks, one day old Ross308, were wing-tagged and reared under conventional conditions. Blood samples were collected individually of all birds to study of ghrelin gene polymorphisms by PCR-RFLP technique. Proventriculus was collected at 35 days of age from thirty birds of each groups sorted according to high, moderate and low growth rate to measure ghrelin gene expression by real-time RT-PCR. Result revealed that final body weight and weight gain were not significantly influenced by ghrelin gene , whereas body weight and weight gain of males and females with high ghrelin gene expression were significantly (p<0.01) higher than those of moderate and low ghrelin gene expression at 21 and 35 days of age. Ghrelin gene polymorphisms had no significant (p>0.05) influence on carcass traits and edible organ weights, while significant (P < 0.01) differences were existed among high, moderate and low ghrelin gene expression groups in carcass weight, breast, wing, neck and back relative weights. It is concluded that PCR- RFLP technique revealed no significant effect for ghrelin gene polymorphisms on productive and carcass traits, whereas ghrelin gene expression had significant effect on productive traits.
STUDI TENTANG FAKTOR-FAKTOR PENENTU BOND RATING PADA INDUSTRI PROPERTI, REAL ESTATE DAN PERUSAHAAN KONTRUKSI BANGUNAN YANG TERDAFTAR DI BEI PERIODE 2013-2017
Authors: Permana Tatiek Ekawati , Mochammad Chaerudin Ruli , Wiyono Darul 
Published: April 2020

Abstrak - Peringkat obligasi berguna untuk investor dan penerbit, yang memberikan informasi tentang kemampuan perusahaan untuk membayar obligasi wajib seperti kupon dan nilai nominal. Ketika suatu pemeringkat menyatakan peringkat obligasi suatu obligasi mengalami kenaikan (upgrade) artinya pemeringkat melihat kinerja perusahaan baik. Sebaliknya jika peringkat obligasi mengalami penurunan (downgrade) memperlihatkan kinerja perusahaan tersebut mengalami penurunan. Tingkat rating semakin tinggi maka hal tersebut menunjukkan kemampuan penerbit obligasi untuk membayar utangnya semakin tinggi. Tujuan dari penelitian ini adalah untuk mengidentifikasi faktor-faktor penentu Bond Rating dengan menggunakan CEO power, Leverage, Size dan Profitabilitas sebagai penentu bond rating, dan menentukan mana dari variabel paling penting yang memiliki pengaruh kuat pada perusahaan. Sampel penelitian ini adalah perusahaan properti, real estate dan perusahaan konstruksi bangunan yang terdaftar di Bursa Efek Indonesia periode 2013-2017. Penelitian ini menggunakan metode analisis data panel untuk mengetahui faktor-faktor penentu Bond Rating (CEO power, Leverage, ukuran perusahaan dan profitabilitas) di Bursa Efek Indonesia dengan sampel sebanyak 9 perusahaan yang dipilih dengan menggunakan teknik purposive sampling periode 2013-2017. Hasil uji empiris menunjukkan bahwa leverage berpengaruh negatif terhadap peringkat oligasi (Bond Rating).
Abstract - Bond ratings are useful for investors and publishers, who provide information about the company's ability to pay mandatory bonds such as coupons and nominal value. When a rating states that the rating of bonds in a bond is upgraded, the rating considers the company's performance to be good. Conversely, if there is a decrease in bond rating (downgrade), it shows that the company's performance has decreased. The higher the rating level, the higher the ability of the bond issuer to pay its debt. The purpose of this research is to identify the determinants of Bond Rating by using CEO power, Leverage, Size and Profitability as a determinant of bond rating, and determine which of the most important variables that have a strong influence on the company. The sample of this research is property companies, real estate and building construction companies listed on the Indonesia Stock Exchange for the period 2013-2017. This study uses panel data analysis method to determine the determinants of Bond Rating (CEO power, Leverage, company size and profitability) on the Indonesia Stock Exchange with a sample of 9 companies selected using a purposive sampling technique for the period 2013-2017. The empirical test results show that leverage negatively affects the bond rating.
Técnicas activas para la enseñanza de la educación superior en el proceso pedagógico intra-aula
Authors: Cedeño Mendoza Fabrina Monserrate , Jarre Cedeño Gilberto Antonio , Macías Cedeño Raquel Inés , Jarre Vera Gilberto Rafael 
Published: April 2020

El presente es un estudio que enfatiza la investigación de técnicas para la enseñanza de la educación superior en el proceso pedagógico intra-aula, el mismo que se respalda bajo los objetivos: a) Incidencia y monitoreo de la aplicación de técnicas activas en el proceso pedagógico de la educación superior, b) Evaluación de técnicas activas en el proceso pedagógico intra-aula. Básicamente hacer que el estudiante de educación superior piense productivamente, desarrollando su razonamiento, enseñándole a enfrentar situaciones nuevas, brindando la oportunidad de involucrarse en la clase para que el aprendizaje sea más interesante, y de esta manera equipar al estudiante con estrategias para resolver problemas, proporcionándole técnicas que sirvan de ayuda en su perfeccionamiento profesional. El tratamiento metodológico de la investigación está basado en las siguientes modalidades: bibliográfica, de Campo, y Cuasi- experimental. Además, se usó los siguientes tipos de investigación: exploratorio, el descriptivo, el analítico, el sintético. Los resultados exteriorizan que los docentes de educación superior si aplican técnicas pedagógicas activas en los diferentes procesos de la gestión educativa, llegando a la conclusión que los docentes si aplican técnicas en el proceso pedagógico intra-aula, las mismas que facilitan el aprendizaje significativo de los estudiantes garantizando la calidad de educación, esto fue también exteriorizado por los estudiantes quienes afirman que la aplicación de técnicas por parte de los docentes ayuda a resolver problemas de la vida cotidiana.