bluuebunny/crossref_metadata_2025 huggingface dataset:
A Geospatial Expose of Flood-Risk and Vulnerable Areas in Nigeria
Authors: Njoku Chukwudi Gbadebo , Efiong Joel , Ayara Nse-Abasi Ndiyo
Published: April 2020

Flooding is recurrent in Nigeria, occurring yearly at different scales. This geared the need for a study to reveal local government areas (LGAs) that are at risk and vulnerable to flooding. The multi-criteria approach was adopted, using geospatial techniques and data. Factors considered were elevation, slope, rainfall intensity, and distance to river. The factors were classified, reclassified, rated, and weighed in a systematic process. Nineteen states and 114 LGAs face high risks, especially communities in the Niger Delta, around the lagoons of Lagos, along River Niger, Benue, and the Cross-River. Also, 125 LGAs in 18 states face medium flood-risk vulnerability. Consideration the population density of communities, Lagos State is the most vulnerable because of LGAs with high population densities within high flood-risk zones. Other states with communities exposed to high flood-risk vulnerability include Rivers, Kogi, Cross River, Akwa Ibom, Anambra, and Delta. The study provides information key to proactive policy formulation, mitigation, and adaptation to flood risk in Nigeria.
Principles of QSAR Modeling
Authors: Gramatica Paola
Published: April 2020

At the end of her academic career, the author summarizes the main aspects of QSAR modeling, giving comments and suggestions according to her 23 years' experience in QSAR research on environmental topics. The focus is mainly on Multiple Linear Regression, particularly Ordinary Least Squares, using a Genetic Algorithm for variable selection from various theoretical molecular descriptors, but the comments can be useful also for other QSAR methods. The need for rigorous validation, also external, and for applicability domain check to guarantee predictivity and reliability of QSAR models is particularly highlighted. The commented approach is the “predictive” one, based on chemometrics, and is usefully applied to the prioritization of environmental pollutants. All the discussed points and the author's ideas are implemented in the software QSARINS, as a legacy to the QSAR community.
QSAR Analysis for the Inhibition of the Mutagenic Activity by Anthocyanin Derivatives
Authors: Szewczuk Nicolas Alejandro , Duchowicz Pablo Román , Pomilio Alicia Beatriz
Published: April 2020

Flavonoid compounds modulate the cytochrome P450 3A4 enzyme activity and inhibit the mutagenic activity of mammalian cells, preventing carcinogen activation and cellular DNA damage. In this work, the quantitative structure-activity relationships (QSAR) theory is applied to predict the cytochrome P450 3A4 inhibition constant by anthocyanin derivatives. Different freely available software calculates 102,260 non-conformational molecular descriptors. A training set of 12 compounds is used to calibrate the best univariable linear regression models, while a test set of 4 compounds is used to explore their predictive capability. The present results are compared with previously reported ones by using 3D-QSAR, thus demonstrating that the proposed topological QSAR models achieve acceptable statistical quality. The proposed model provides a prospective QSAR guide for the search of new anthocyanin derivatives possessing high or low predicted mutagenicity.
Endogenous CD83 Expression in CD4+ Conventional T Cells Controls Inflammatory Immune Responses
Authors: Liedtke Katarina , Alter Christina , Günther Anne , Hövelmeyer Nadine , Klopfleisch Robert , Naumann Ronald , Wunderlich F. Thomas , Buer Jan , Westendorf Astrid M. , Hansen Wiebke
Published: April 2020

The glycoprotein CD83 is known to be expressed by different immune cells including activated CD4+Foxp3+ regulatory T cells (Tregs) and CD4+Foxp3− conventional T cells. However, the physiological function of endogenous CD83 in CD4+ T cell subsets is still unclear. In this study, we have generated a new CD83flox mouse line on BALB/c background, allowing for specific ablation of CD83 in T cells upon breeding with CD4-cre mice. Tregs from CD83flox/flox/CD4-cretg/wt mice had similar suppressive activity as Tregs from CD83flox/flox/CD4-crewt/wt wild-type littermates, suggesting that endogenous CD83 expression is dispensable for the inhibitory capacity of Tregs. However, CD83-deficient CD4+ conventional T cells showed elevated proliferation and IFN-γ secretion as well as an enhanced capacity to differentiate into Th1 cells and Th17 cells upon stimulation in vitro. T cell–specific ablation of CD83 expression resulted in aggravated contact hypersensitivity reaction accompanied by enhanced CD4+ T cell activation. Moreover, adoptive transfer of CD4+CD45RBhigh T cells from CD83flox/flox/CD4-cretg/wt mice into Rag2-deficient mice elicited more severe colitis associated with increased serum concentrations of IL-12 and elevated CD40 expression on CD11c+ dendritic cells (DCs). Strikingly, DCs from BALB/c mice cocultured with CD83-deficient CD4+ conventional T cells showed enhanced CD40 expression and IL-12 secretion compared with DCs cocultured with CD4+ conventional T cells from CD83flox/flox/CD4-crewt/wt wild-type mice. In summary, these results indicate that endogenous CD83 expression in CD4+ conventional T cells plays a crucial role in controlling CD4+ T cell responses, at least in part, by regulating the activity of CD11c+ DCs.
The Impact of MHC Class I Dose on Development and Maintenance of the Polyclonal Naive CD8+ T Cell Repertoire
Authors: Sng Xavier Y. X. , Li Jasmine , Zareie Pirooz , Assmus Lisa M. , Lee Jason K. C. , Jones Claerwen M. , Turner Stephen J. , Daley Stephen R. , Quinn Kylie M. , La Gruta Nicole L.
Published: April 2020

Naive CD8+ T cell survival in the periphery is critically dependent on tonic TCR signaling through peptide + MHC class I (MHCI) recognition; however, little is known about how natural variation in MHCI levels impacts the naive CD8+ T cell repertoire. Using mice that are hemizygous or homozygous for a single MHCI allele, we showed that despite a reduction in peripheral CD8+ T cell numbers of ∼50% in MHCI hemizygous mice, MHCI levels had no notable impact on the rate of thymic generation or emigration of CD8 single-positive T cells. Moreover, the peripheral T cell repertoire in hemizygous mice showed selective retention of T cell clonotypes with a greater competitive advantage as evidenced by increased expression of CD5 and IL-7Rα. The qualitative superiority of CD8+ T cells retained in hemizygous mice was also seen during influenza A virus infection, in which epitope-specific CD8+ T cells from hemizygous mice had a higher avidity for pMHCI and increased cytokine polyfunctionality, despite a reduced response magnitude. Collectively, this study suggests that natural variation in MHCI expression levels has a notable and biologically relevant impact on the maintenance, but not generation, of the naive CD8+ T cell repertoire.
Dendritic Cell Maturation Defines Immunological Responsiveness of Tumors to Radiation Therapy
Authors: Blair Tiffany C. , Bambina Shelly , Alice Alejandro F. , Kramer Gwen F. , Medler Terry R. , Baird Jason R. , Broz Miranda L. , Tormoen Garth W. , Troesch Victoria , Crittenden Marka R. , Gough Michael J.
Published: April 2020

Radiation therapy is capable of directing adaptive immune responses against tumors by stimulating the release of endogenous adjuvants and tumor-associated Ags. Within the tumor, conventional type 1 dendritic cells (cDC1s) are uniquely positioned to respond to these signals, uptake exogenous tumor Ags, and migrate to the tumor draining lymph node to initiate cross-priming of tumor-reactive cytotoxic CD8+ T cells. In this study, we report that radiation therapy promotes the activation of intratumoral cDC1s in radioimmunogenic murine tumors, and this process fails to occur in poorly radioimmunogenic murine tumors. In poorly radioimmunogenic tumors, the adjuvant polyinosinic-polycytidylic acid overcomes this failure following radiation and successfully drives intratumoral cDC1 maturation, ultimately resulting in durable tumor cures. Depletion studies revealed that both cDC1 and CD8+ T cells are required for tumor regression following combination therapy. We further demonstrate that treatment with radiation and polyinosinic-polycytidylic acid significantly expands the proportion of proliferating CD8+ T cells in the tumor with enhanced cytolytic potential and requires T cell migration from lymph nodes for therapeutic efficacy. Thus, we conclude that lack of endogenous adjuvant release or active suppression following radiation therapy may limit its efficacy in poorly radioimmunogenic tumors, and coadministration of exogenous adjuvants that promote cDC1 maturation and migration can overcome this limitation to improve tumor control following radiation therapy.
New data on the Oriental Xantholinini. 47. New species and new records from Mindanao, Philippines (Coleoptera, Staphylinidae)
Authors: Bordoni Arnaldo
Published: April 2020

The following new species from Mindanao, Philippines are described and illustrated: Thyreocephalus lumawigi sp. n., Achmonia davaoensis sp. n., and Manilla shavrini sp. n. In a note preoccupied names of two species from New Caledonia that I have described in the 289th contribution and one species from Sri Lanka, published in my 274th contribution is changed, relating to species of the genera Pachycorynus and Zeteotomus. New records for some species of the oriental Region are listed. Thyreocephalus depressus Bordoni, 2013, described from Yunnan, is new for Laos.
Nuovi atti nomenclatoriali nel genere Trechus Clairville, 1806 (Coleoptera, Carabidae, Trechinae)
Authors: Degiovanni Augusto , Magrini Paolo
Published: April 2020

Facendo seguito alla monografia, e alla relativa iconografia, del genere Trechus in Italia e Corsica di Degiovanni & Magrini (2019), gli autori propongono questa breve nota di sintesi, con “addenda & corrigenda”, per chiarire e/o aggiornare i contenuti del testo.
Atti Sociali
Authors: Italiana Società Entomologica
Published: April 2020

N.D.
COVID-19 and renal disease in elderly patients
Authors: Coppolino Giuseppe , Presta Pierangela , Nicotera Ramona , Placida Giordano , Vita Caterina , Carullo Nazareno , Andreucci Michele , Bolignano Davide , Castagna Alberto , Ruotolo Giovanni
Published: April 2020

The pandemic blast of COVID-19 uncovered well known weakness of financial chain and put our economic organizations facing off dramatic consequences if new strategies will not be developed to adapt health-care on detailed sub-groups of patients. The exponential number of older and frail subjects aged >65 years represents a challenge for public health. Patients affected by renal disease are an aged population that showed a particular attitude to contract infection and a higher mortality rate respect to general population. In this brief article, we would point out the focus on the management of issues related to renal patients facing off with coronavirus infection, in particular in a geriatric population particularly exposed to contagion like hemodialysis patients and precautions decided to slow the spread of contamination.
The Multidimensional Prognostic Index (MPI) for the prognostic stratification of hospitalized older patients with COVID-19: a prospective multicenter observational cohort study. Objectives, study design and expected outcomes (MPI_COVID-19)
Authors: Custodero Carlo , Cella Alberto , Veronese Nicola , Azzini Margherita , Fimognari Filippo , Mattace-Raso Francesco , Polidori Maria Cristina , Sabbà Carlo , Pilotto Alberto
Published: April 2020

The emergent coronavirus-19 disease (COVID-19) pandemic posed and still poses serious issues in the management of the inpatients and in the resource allocation, in particular for those patients requiring Intensive Care Unit (ICU) management. Epidemiological data clearly suggest that multimorbid older patients have the poorest prognosis. However, it is conceivable that age and number of comorbidities alone do not reflect the real condition and the expected prognosis of the patients affected by COVID-19. A different approach based on comprehensive geriatric assessment (CGA) could help to better identify older patients more at risk of dismal outcomes and who, at some point of their clinical course, will need the ICU admission. The Multidimensional Prognostic Index (MPI) is a well-accepted tool derived from a standard CGA which allows to measure prognosis of older patients in different clinical settings including hospital. Therefore, we designed a multicenter, prospective, observational study to evaluate the role of MPI in predicting risk of ICU admission and in-hospital mortality among 500 COVID-19-positive older subjects admitted to geriatric and internal medicine wards. In addition, risk of re-hospitalization, institutionalization and death after 3 months from discharge will be assessed. The MPI yields a straightforward value from 0 to 1 and might be able to adequately stratify complex, vulnerable COVID-19 patients for best possible decision-making and treatment allocation.
RETRACTION: The biological mechanism involved in anticancer properties of amniotic membrane
Authors: Porta Camillo
Published: April 2020

To our readers:

With deep regrets, we inform our Readers that the article The biological mechanism involved in anticancer properties of amniotic membrane (DOI: https://doi.org/10.4081/oncol.2020.429), which has been published in the current issue of Oncology Reviews (2020-1), contains verbatim text plagiarized from another paper.1 The manuscript must be considered as retracted. On behalf of the Editorial Board of Oncology Reviews, I apologize to the Author of the manuscript whose text was plagiarized by Ameneh Jafari, Hassan Niknejad, Mostafa Rezaei-Tavirani, Caitlin D’Amico, Hakimeh Zali that this was not picked up in the peer review process. I also apologize to the affected journal for the violation of copyright due to plagiarism. Unfortunately we were not able to detect it before publication due to the language of the original paper (Slovenian). Oncology Reviews is uncompromising in its commitment to scientific integrity. When credible evidence of misconduct is brought to our attention, our commitment to the scientific record and to our readership requires immediate notification. Oncology Reviews is increasingly employing sophisticated software to detect plagiarism. Other journals use similar tools. Authors should be aware that most journals routinely employ plagiarism detection software, and that any plagiarism is likely to be detected.

Camillo Porta, Editor-in-Chief Oncology Reviews

 

Reference1. Ramuta TZ, Cirman T, Erdani Kreft M. Celično-biološki mehanizmi delovanja amnijske membrane proti raku in možnosti za njeno uporabo pri zdravljenju raka [Cell-biological mechanisms of amniotic membrane anticancer activity and the possibilities of its use in anticancer therapy]. Slovenian Medical Journal (Zdravniški vestnik) 2018;87(9-10):483-92. (DOI: 10.6016/ZdravVestn.2674).
Взаимодействие кватернионного поля Дирака с бозонным полем
Authors: Arbab Arbab Ibrahim
Published: April 2020

Бикватернионное уравнение Дирака обобщается путем включения в него взаимодействия с фоновым бозонным полем. Полученное бикватернионное уравнение Дирака дает подобные максвеловским уравнения, которые справедливы как для поля материи, так и для электромагнитного поля. Установлено, что электрическое поле перпендикулярно полю магнитной материи, а магнитное поле - полю инерционной материи. Показано, что инерционная и магнитная массы сохраняются отдельно. Плотность магнитной массы возникает как следствие связи между векторным потенциалом и полем инерционной материи. Наличие векторного и скалярного потенциалов, а также полей инерционной и магнитной материи изменяет стандартную форму полученных уравнений Максвелла. Итоговые уравнения электродинамики со взаимодействием являются обобщением уравнений для аксионоподобных полей Вильчека или Черна-Саймонса. Поле в бикватернионном поле Дирака воспроизводит аксионное поле Вильчека. Показано, что вектор электромагнитного поля $\vec F=\vec E+ic\vec B$,
где $\vec E$ и $\vec B$ - соответственно электрическое и магнитное поля, удовлетворяет уравнению Дирака с массой в дополнение к тому, что $\vec\nabla\cdot\vec F=0$.
Двумерное низкоэнергетическое рассеяние квантовой частицы в суммарном поле кулоновского и степенного потенциалов
Authors: Pupyshev Vasily Veniaminovitch
Published: April 2020

Исследуется двумерное рассеяние квантовой частицы силовым
центром, воздействующим на нее посредством суперпозиции кулоновского
потенциала и степенного потенциала $V_{0} r^{-\beta}$ с показателем $\beta\in(1,2)$. Найдены в явном виде низкоэнергетические
асимптотики всех парциальных фаз и амплитуд такого рассеяния.
Алгебра калибровочных теорий
Authors: Zharinov Viktor Viktorovich
Published: April 2020

Представлено дальнейшее развитие алгебраических аспектов калибровочных теорий, начатое в предыдущих работах автора.
An attempt at a reconciliation of the Sraffian and Kaleckian views on desired utilization
Authors: Franke Reiner
Published: April 2020

This paper derives firms’ desired rate of utilization from an explicit maximization of a conjectured rate of profit at the micro level. Invoking a strategic complementarity, desired utilization is thus an increasing function of not only the profit share but also the actual utilization. Drawing on recent empirical material and a straightforward functional specification, the model is subsequently numerically calibrated. In particular, this ensures a unique solution for a steady-state position in which the actual and the endogenous desired rates of utilization coincide. On the other hand, it turns out that the anticipated losses of firms by not producing at the desired level are rather small. Hence there may be only weak pressure on them to close a utilization gap in the ordinary way by suitable adjustments in fixed investment. It is indicated that this finding may serve Kaleckian economists as a more rigorous justification for viewing their equilibria as pertaining to the long run, even if they allow actual utilization to deviate persistently from desired utilization.
PENGARUH KOMUNIKASI ORGANISASI DAN KEPUASAN KERJA TERHADAP MOTIVASI KERJA GURU SMA KATOLIK
Authors: Agnes Delviana Simangunsong  , Matin  , Siti Rochanah
Published: April 2020

The objective of this research is to obtain information concerning to the effect of organizational communication and job satisfaction toward work motivation in Catholic Senior High Schools at West Jakarta.The research was conducted by using survey method with path analysis in testing hypothesis. In this research, 130 from 192 teachers had selected random sampling. The responders were involved by sending their feedback within the questionnaires.The results showed that: first, there are positive influences between organizational communication and work motivation; second, there are positive influences between job satisfaction and work motivation; third, there are positive influences between organizational communication and job satisfaction.

 

Abstrak

Penelitian ini bertujuan untuk memperoleh informasi mengenai pengaruh komunikasi organisasi dan kepuasan kerja terhadap motivasi kerja di Sekolah Menengah Atas Katolik di Jakarta Barat. Penelitian ini dilakukan dengan menggunakan metode survei analisis jalur dalam. Dalam penelitian ini, 130 dari 192 guru telah memilih sampel acak. Para responden dilibatkan dengan mengirimkan umpan balik mereka dalam kuesioner. Hasil penelitian menunjukkan bahwa: pertama, ada pengaruh positif antara komunikasi organisasi dan motivasi kerja; kedua, ada pengaruh positif antara kepuasan kerja dan motivasi kerja; ketiga, ada pengaruh positif antara komunikasi organisasi dan kepuasan kerja.

Kata Kunci: Motivasi Kerja, Kepuasan Kerja, Komunikasi Organisasi
ANALISIS KOHESIVITAS KELOMPOK, KEPUASAN KERJA DAN KEMANGKIRAN (ABSENTEEISM) TERHADAP PRODUKTIVITAS KERJA GURU DI SMK NEGERI SE-KOTA BEKASI
Authors: Purwani Puji Utami,  , Niken Vioreza  , Nanda Lega Jaya Putra  , Illah Sailah
Published: April 2020

Teacher work productivity is a determining factor for the success of education quality, because teachers face directly with students in providing guidance that will produce professional graduates. The purpose of this study was to examine the direct effect of group cohesiveness, job satisfaction and absenteeism on the work productivity of vocational high school teachers. This research was conducted in Bekasi, Indonesia. This study uses a survey method with the path analysis approach. Data collection by distributing questionnaires as many as 104 teachers with simple random sampling technique with Slovin formula. Based on the results of testing the hypothesis in this study it was concluded that:(1) group cohesivenesshas a positive direct effect on teacher work productivity; (2) job satisfaction has a positive direct effect on teacher work productivity; (3) absenteeism has a direct negative effect on work productivity; (4) group cohesiveness has a direct negative effect on absence; and (5) job satisfaction has a direct negative effect on absence;(6) group cohesivenesshas a positive direct effect on job satisfaction.

 

Abstrak

Produktivitas kerja guru merupakan faktor penentu keberhasilan mutu pendidikan, sebab guru bersinggungan langsung dengan peserta didik dalam memberikan bimbingan yang muaranya akan menghasilkan lulusan profesional. Tujuan dari penelitian ini adalah untuk menguji pengaruh langsung kepuasan kerja dan kemangkiran terhadap produktivitas kerja guru SMK.Penelitian ini dilakukan di Bekasi, Indonesia.Penelitian ini menggunakan metode survei dengan pendekatan path analysis.Pengumpulan data dengan menyebarkan kuesioner sebanyak 104 guru dengan teknik simple random sampling menggunakan rumus slovin. Berdasarkan hasil pengujian hipotesis dalam penelitian ini disimpulkan bahwa: (1) kohesivitas kelompok berpengaruh langsung positif terhadap produktivitas kerja guru;(2) kepuasan kerja berpengaruh langsung positif terhadap produktivitas kerja guru; (3) kemangkiran (absenteeism) berpengaruh langsung negatif terhadap produktivitas kerja; (4) kohesivitas kelompokberpengaruh langsung negatif terhadap kemangkiran (absenteeism); dan (5) kepuasan kerja berpengaruh langsung negatif terhadap kemangkiran (absenteeism); (6) kohesivitas kelompok berpengaruh langsung positif terhadap kepuasan kerja.

Kata Kunci : Kemangkiran, Kohesivitas Kelompok, Kepuasan Kerja, Dan Produktivitas Kerja
PENGARUH MODEL PEMBELAJARAN KONTEKSTUAL DAN MODEL PEMBELAJARAN KONVENSIONAL DENGAN KONSEP DIRI TERHADAP PEMAHAMAN KONSEP MATEMATIKA SISWA KELAS IV SEKOLAH DASAR
Authors: Yana Supriatna  , Anton Noornia  , Deasiyanti  , Lamria
Published: April 2020

This study aims to determine the effect of Contextual learning models and Conventional learning models with Self Concepts on Understanding Mathematical Concepts in Class VI Elementary School Mathematics. The research sites were SDIT El-Ma'mur and SDIT Al-Munawar. The study was conducted using an experimental method involving two sample groups namely students who learned to use contextual and conventional approaches. Thus it is expected to be compared with the same two study groups. The results of this study indicate that there are differences in the ability of Mathematical Concept Understanding of elementary school students between students who learn to use the contextual learning model with students who learn to use conventional learning models. In addition, the Self Concept also influences the ability of students to understand Mathematical Concepts. The results of data analysis have been carried out.

 

Abstrak

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Kontekstual dan model pembelajaran Konvensional dengan Konsep Diri terhadap Pemahaman Konsep Matematika pada pelajaran Matematika Kelas VI Sekolah Dasar. Tempat yang dijadikan penelitian adalah SDIT El-Ma’mur dan SDIT Al-Munawar. Penelitian dilakukan dengan menggunakan metode eksperimen dengan melibatkan dua kelompok sampel yaitu siswa yang belajar menggunakan pendekatan kontekstual dan konvensional. Dengan demikian diharapkan dapat dibandingkan dua kelompok belajar yang sama. Hasil penelitian ini menunjukan bahwa terdapat perbedaan kemampuan Pemahaman Konsep Matematika siswa sekolah dasar antara siswa yang belajar menggunakan model pembelajaran Kontekstual dengan siswa yang belajar menggunakan model pembelajaran Konvensional. Selain itu, Konsep Diri juga memberikan pengaruh terhadap kemampuan Pemahaman Konsep Matematika siswa. Adapun hasil analisis data yang telah dilakukan

Kata kunci: Model Pembelajaran Kontekstual, Konsep Diri, Pemahaman Konsep Matematika
KEKUASAAN DAN PENDIDIKAN
Authors: Musdiani
Published: April 2020

Pendidikan merupakan usaha sadar dan terencana untuk mewujudkan suasana belajar, proses pembelajaran agar peserta didik secara aktif mengembangkan potensi diri untuk dapat memiliki kekuatan spiritual, kecerdasan, ahklak mulia, serta keterampilan yang diperlukan, dalam masyarakat, bangsa dan negara. Sedangkan kekuasaan adalah pemerintah dengan birokrasi yang di pegang oleh seseorang atau kekuasaan lainnya. Dengan demikian antara pendidikan dan kekuasaan memiliki hubungan yang sangat erat dan akan saling mempengaruhi, setiap proses dari pendidikan selalu akan berhubungan dengan Kebijakan-kebijakan dari pemerintah yang mengendalikan kekuasaan.
BLOG SEBAGAI SUMBER PEMBELAJARAN INOVATIF
Authors: Siraj
Published: April 2020

Blog merupakan bentuk aplikasi web yang memuat catatan online yang berupa teks, gambar, dan video yang tersusun secara hierarkis dan kronologis yang dapat diakses melalui browser internet. Blog efektif dikembangkan sebagai media pembelajaran, karena melalui blog, materi bisa tersaji lebih menarik. Blog bisa dilengkapi dengan grafis, ilustrasi/gambar/foto, video, dan lain-lain. Blog sebagai sumber pembelajaran lebih memberikan informasi dan komunikasi secara interaktif dibandingkan dengan sumber lain. Informasi yang didapatkan lebih mudah, cepat, dengan jangkauan global. Pembelajaran dengan media ini menggunakan sistem Self Based Learning atau sistem pembelajaran mandiri. Dengan teknologi internet, pembelajaran dapat dilaksanakan secara online. Baik kegiatan belajar di kelas maupun tugas mandiri di luar kelas.
PERANAN KEPEMIMPINAN KEPALA SEKOLAH DAN IKLIM SEKOLAH TERHADAP KINERJA GURU
Authors: Saiful Bahri
Published: April 2020

Kepala Sekolah mempunyai wewenang dan tanggung jawab penuh untuk menyelenggarakan seluruh kegiatan pendidikan dalam lingkungan sekolah yang dipimpinnya.Selain kepemimpinan kepala sekolah, iklim sekolah ikut berpengaruh terhadap kinerja guru, yaitu menyangkut hubungan antar personal sekolah, kesempatan pengembangan diri, kesempatan untuk ikut berperan dalam perubahan sistem serta kondisi lingkungan sekolah yang nyaman dapat memotivasi para guru untuk lebih giat dalam melaksanakan tugasnya yang akan berdampak pada peningkatan kinerja guru.
PERANAN GURU DALAM UPAYA MENINGKATKAN PEMBELAJARAN PENDIDIKAN JASMANI DI SEKOLAH DASAR NEGERI SE-KECAMATAN SAWANG KABUPATEN ACEH SELATAN
Authors: Dadi Dartija
Published: April 2020

Penelitian tentang peranan guru dalam upaya meningkatkan pembelajaran pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan pada tanggal 02 sampai 17 Oktober 2009. Masalah utama dalam penelitian ini adalah belum efektifnya pembelajaran pendidikan jasmani di sekolah. Tujuan penelitian ini adalah untuk mengetahui bagaimana usaha-usaha yang dilakukan guru dalam meningkatkan pembelajaran pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan dan juga hambatan yang di alami guru dalam meningkatkan pembelajaran pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan. Sampel dalam penelitian ini adalah guru yang mengajar pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan yang berjumlah 13 orang. Teknik pengumpulan data dalam penelitian ini menggunakan angket. Data dianalisis menggunakan rumus persentase. Hasil penelitian menggambarkan bahwa usaha-usaha guru dalam meningkatkan pembelajaran pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan belum efektif. Hambatan yang di alami guru dalam meningkatkan pembelajaran pendidikan jasmani di Sekolah Dasar Negeri Se Kecamatan Sawang Kabupaten Aceh Selatan antara lain tidak lengkapnya buku paket dan buku penunjang serta kurikulum pembelajaran yang belum dikuasai sehingga mengalami hambatan dalam membuat rencana pembelajaran. Selain itu sarana dan prasarana masih kurang lengkap serta kondisi lingkungan sekolah yang kurang mendukung, pekarangan sekolah yang sempit sehingga menyebabkan pembelajaran pendidikan jasmani berjalan kurang efektif.
PENGARUHNYA CIRCUIT TRAINING TERHADAP KELINCAHAN DALAM OLAHRAGA KARATE ALIRAN KKI DOJO DARUL ULUM BANDA ACEH TAHUN 2009/2010
Authors: Irwandi
Published: April 2020

Dalam permainan olahraga karate, unsur kelincahan sangat diperlukan seorang atlet untuk mengantisipasi serangan-serangan lawan. Dengan kelincahan yang baik memungkinkan seorang pemain untuk dapat bergerak kesemua arah dengan cepat untuk membangun strategi serangan dan menyelamatkan diri dari serangan lawan. Penelitian ini dilakukan untuk memperoleh data yang konkrit tentang pengaruh circuit training terhadap kelincahan, mengingat kelincahan tahan yang baik yang sangat mempengaruhi prestasi seorang atlet dalam cabang olahraga Karate. Latihan sirkuit merupakan salah satu bentuk latihan fisik yang dapat meningkatkan kelincahan serta kemampuan fisik seseorang secara keseluruhan.
NILAI PENDIDIKAN AQIDAH DALAM KUMPULAN PUISI MALU (AKU) JADI ORANG INDONESIA KARYA TAUFIQ ISMAIL
Authors: Khadijah
Published: April 2020

Pembinaan dan pengembangan sastra khususnya puisi sebagai bagian kebudayaan nasional perlu dilaksanakan karena didalam puisi terkandung nilai-nilai yang penting bagi bangsa Indonesia. Karena kemerosotan nilai pendidikan aqidah mengakibatkan rusaknya tatanan dan peradaban kehidupan bangsa, baik kehidupan orang dewasa, maupun generasi muda. Kumpulan puisi Malu (Aku) jadi Orang Indonesia (MAJOI) karya Taufiq Ismail merupakan catatan-catatan emosional zaman dengan gejolak politik dan sikap bangsa Indonesia. Berdasakan kenyataan itu, dilakukan penelitian nilai Pendidikan aqidah kumpulan puisi Malu (Aku) jadi Orang Indonesia (MAJOI) karya Taufiq Ismail .Rumusan masaalah : Bagaimanakah nilai pendidikan aqidah dalam kumpulan puisi Malu (Aku) jadi Orang Indonesia (MAJOI ) karya Taufiq Ismail ? Penelitian ini dilakukan dengan tujuan mengungkapkan nilai pendidikan aqidah dalam Kumpulan puisi Malu ( Aku) jadi Orang Indonesia (MAJOI) karya Taufiq Ismail. Pengumpulan data dilakukan dengan teknik studio dukumentasi karena sumber data penelitian ini berupa dokumen. Istrumennya berupa instrument manusia, Yakni diri peneliti dan pedoman pengumpulan data. Untuk menjaga kesahihan data dilakukan dengan mengunakan model interaktif-dialektis yang didalamnya melibatkan tiga kegiatan analisis yang dilakukan secara serempak, bolak-balik, dan berkali-kali, yaitu kegiatan reduksi data, sajian data, dan penarikan kesimpulan atau verikfikasi. Dari hasil penelitian penulis menemukan nilai pendidikan aqidah dipengaruhi oleh kesadaran masyarakat dan panggilan hati untuk bertanggung jawab terhadap keluarga, kesatuan, keseimbangan keharmonisan, keteraturan, kemajuan, kemakmuran, dan kebahagian masyarakat.
PENERAPAN PENDEKATAN PENDIDIKAN MATEMATIKA REALISTIK (PMR) UNTUK MENINGKATKAN KEMAMPUAN MENYELESAIKAN SOAL CERITA DAN SIKAP SISWA
Authors: Zikra Hayati
Published: April 2020

This research was conducted on 60 pupils at fourth level in an Elementary School in Banda Aceh (MIN 1 Banda Aceh). Comparing to other schools in Aceh, the school has a good quality, in this case middle ability of the grade students, than others. The experimental design both qualitative and quantitative approaches, in order to investigate students’ abilities to solve word problems. There are two groups, namely, experimental group which using realistic mathematics education (RME) approach in instruction , and another group without using RME in instruction. in the case using instrument, both groups used the same instrument in this research. Moreover, eksperimental case research Pre-test Post-test Control Group Design was used, in order to investigate differences between student who has ability to solve word problem by using RME approach and student who get instructions without RME approach and so to know interaction between students ability to solve word problem by mathematics realistic. The investigation based on the level ability mathematics students (high level, medium level and low level), and to see students’ attitude toward mathematics realistic. Based on data analysis, it is found that a differences of students abilities between experimental group and control group. The differences of the abilities shown by statistics test by anova test (by using α = 0,05). It means that there are differences of students’ abilities to solve word problems using RME and students’ ability to word word problems using conventional learning as learning instructions.therefore, there is no interaction between students’ abilities in order to solve word problems in RME based on students’ abilities (high level, medium level and low level) and students’ attitude toward RME approach.
THE RELATIONSHIP BETWEEN TEACHER INTERPERSONAL BEHAVIOR AND STUDENT ATTITUDE TOWARD SCIENCE LEARNING IN PRIMARY SCHOOL: INDONESIAN CASE STUDY
Authors: Mustafa Kamal Nasution
Published: April 2020

This study proposes to assess the relationship between student perceptions on teacher interpersonal behavior and student attitude toward Science in Indonesian Primary school. This research engaged 143 students from SDN 47 Jambi, Indonesia. To gather the data, two types of questionnaires were used; Test of Science Related Attitude (TOSRA) and the Indonesian version of the Questionnaire Teacher Interpersonal (QTI). SPSS program were applied to process the data statistically. The result shows that the questionnaires are relatively reliable for Indonesian primary students. Acceptability of Cronbach alpha coefficient was found in both actual and preferred situation. The findings also reveal that from the students’ view, their teachers have relatively good Leadership and Understanding in the classroom, less Uncertainty, Dissatisfaction and Admonishment toward students. However, the students perceive to some extent unfavorable perceptions on their Freedom and teacher Strictness. Another analysis describes that there are significant differences between actual and ideal perceptions on the whole scale of QTI except on Uncertainty. Furthermore, between male and female perceptions, this study finds that there are significant differences on Helping, and Strictness. Lastly, the multiple correlation analysis explaines that there is a correlation between the scale of QTI and Enjoyment toward science, in which Uncertainty and Admonishment scales are significantly negative affect students’ enjoyment in science classroom.
MENGATASI KEMISKINAN MELALUI PEMBERDAYAAN MASYARAKAT
Authors: Khausar
Published: April 2020

Kemiskinan merupakan masalah sosial yang terjadi dalam masyarakat, banyak ditemukan dinegara-negara yang sedang berkembang termasuk negara Indonesia salah satunya. Telah banyak kebijakan pemerintah yang digulirkan untuk mengatasi kemiskinan seperti program IDT, P2KP, Askeskin, kompesasi BBM, PPK dan lain-lain, tetepi belum membuahkan hasil yang maksimal, bahkan angka kemiskinan dipredikasi akan terus meningkat apabila harga BBM naik lagi, dimana kenaikan harga BBM diikuti oleh kenaikan harga bahan kebutuhan pokok, yang menyebabkan daya beli masyarakat menurun dan angka pengangguran meningkat. Kenyataan didaerah menunjukan bahwa implementasi kebijakan tidak tepat sasaran karena berbagai hal seperti kondisi kemiskinan dipolitisir sebagai lahan bisnis kemanusiaan yang menjanjikan atau program yang diterapkan bersifat parsial, residual dan karitatif. Untuk itu penanggulangan kemiskinan di daerah perlu ditata dan dikoordinir secara baik agar tujuan tercapai secara maksimal.
INTEGRATING GEOSPATIAL TECHNOLOGIES IN THE SECONDARY MATHEMATICS CLASSROOM
Authors: Mailizar
Published: April 2020

Geospatial technology refers to technology used for visualization, measurement, and analysis of phenomena that occur on the earth. Since features or phenomena that occur on earth relate to mathematical concepts, geospatial technologies have great potential to enhance mathematical learning activities. It is clear that spatial ability is very important in order to succeed in learning mathematics. Geospatial technologies such as Google Earth can facilitate students in enhancing spatial thinking. Moreover Integrating geospatial technology will facilitate learners in making the connection between mathematical concepts and the real world. Finally, the integration will enhance students’ ability in making connections between mathematical concept and their other courses. The integration will face some possible barriers such as limited availability of software and hardware and insufficient ability of the teachers.
SUPERVISI PENDIDIKAN DALAM MENGEMBANGKAN KOMPETENSI GURU MATEMATIKA PADA MADRASAH ALIYAH NEGERI (MAN) BEUREUNUEN KABUPATEN PIDIE
Authors: Khazanatul Khairat
Published: April 2020

Teaching supervision is one of factors influencing the development of teacher’s competence. This research used descriptive qualitative method. The data were collected through observation, interview and documentation. The subject of this research were the supervisors, principal, vice principal of curriculum affairs, math teachers, and chief of MGMP. The results of this research showed that (1) annual supervision program was compiled both for regency and municipality level by several supervisors employed by the coordinator of supervisor based on his authority that it then became a reference for supervisors in the area to compile semester program. (2) Techniques of supervision of education conducted by supervisors were class visit, class observation, orientation meeting, teacher meeting and sharing knowledge. The supervision conducted periodically based on supervision program. (3) The strategies used by supervisors in running their duties were collecting sample at each school, forming team teaching, and delegating vice principal and chief of MGMP. (4) The supporting factors were teachers’ willingness to be supervised and principal’s enthusiasm in supervising. On the other hand, the inhibiting factors were elderly supervisors recruited nearly retired, the amount of supervisors and teachers were disproportionately so that the supervision towards teachers were not balanced and there was no distribution of supervisors based on their background study.
STUDENT QUESTIONNAIRE OF PISA 2006 AND RASCH ANALYSIS
Authors: Fitriati
Published: April 2020

PISA is one of the biggest international student assessments. The results of this study are frequently used to inform policy directions and to provide feedback to learning and teaching. However, due to country socioeconomic, cultural and language differences among the countries, the test instruments may not be funtioning in the same way in all culture. Those differences may cause non-equivalence of tests or or tests may not be fair among different cultures, which then challenges assumptions made about measurement equivalence. This study aims to examine the equivalence of motivation and self concept items on student questionnaires of PISA 2006 study whether fit Indonesia context or not. The study employed two analisis of Rasch model to seek the equivalence of the tests. The results revealed that there is no significant DIF on motivation scale. One important finding of DIF analysis using Indonesia data was that two items of self-concept scale have been shown favoring males. The study also found that all items on motivation and self concept scale fit the data set and are not dependent on upon the sample of Indonesian students. The test is fair among different groups and contexts. This study suggests that more scales analysis is required as it will provide more comprehensive findings about the equivalence of this survey test.
PENINGKATAN HASIL BELAJAR PENDIDIKAN AGAMA ISLAM DENGAN MENGGUNAKAN METODE PETA PIKIRAN BAGI ANAK USIA DINI
Authors: Ayi Teiri Nurtiani
Published: April 2020

The aims of this research are to know the upgrading of learning outcome in islamic study by use of mind map method and are there any increase of grade first class elementary student capability of learning outcome in islamic study after giving the learning outcome in islamic study by use of mind map method. 24 students of first class at Amaliah Elementary Ciawi-Bogor are the subject of this research.This research used action research method according to Kemmis and Mc.Taggart that consist of four step: 1) plan, 2) action, 3) observation, and 4) reflection. The data was collected by filed notes, interview, observation, test, an documentation. The data was analyzed by qualitative and quantitative method.The result of research shows that the learning outcome in islamic study by use of mind map method could increase capability of first class elementary students. Whereas the learning outcome in islamic study consist of cognitive, afective, and psikomotor.
PEMBELAJARAN KOOPERATIF TEKNIK BERPIKIR BERPASANGAN BEREMPAT SEBAGAI UPAYA MENINGKATKAN KEMAMPUAN MAHASISWA MENGUASAI EJAAN PADA MKU BAHASA INDONESIA
Authors: Syahriandi
Published: April 2020

Tujuan penelitian ini adalah untuk mengetahui apakah model pembelajaran kooperatif teknik berpikir berpasangan berempat dapat meningkatkan kemampuan mahasiswa terhadap materi ejaan. Metode kegiatan dirancang berupa perencanaan awal, perencanaan tindakan, pelaksanaan tindakan, pengamatan, dan refleksi. Subjek penelitian ini adalah adalah mahasiswa Fakultas Pertanian Malikussaleh yang dipilih secara random dari enam kelas. Masing-masing kelas diambil lima kelompok. Masing-masing pasangan terdiri atas empat mahasiswa. Jadi, jumlah kelompok yang diambil sebanyak 30 kelompok. Indikator keberhasilan penelitian tindakan kelas ini adalah di atas 85% kelompok memperoleh nilai keseluruhan ≥ 75. Hasil penelitian terlihat bahwa model kooperatif teknik berpikir berpasangan berempat dapat meningkatkan kualitas hasil belajar dan membuat suasana belajar menjadi terarah. Hal tersebut terlihat dari nilai keseluruh yang selalu meningkat, yaitu dari 3 kelompok yang mendapat nilai ≥ 75 (10%), lalu menjadi 10 kelompok (33,33%), kemudian menjadi 26 kelompok (86,67%). Keberhasilan juga terlihat dari jumlah mahasiswa yang aktif, yaitu persentase keseluruhan juga meningkat menjadi 79,88% pada siklus II dari 51,43% pada siklus I. Jadi, pada siklus II ini keaktifan mahasiswa sudah ≥ 75% sehingga pada siklus II ini telah dikategorikan sudah berhasil.
PENERAPAN MODEL PEMBELAJARAN KOOPERTIF TIPE TEAM ASSISSTED INDIVIDUALIZATION (TAI) BERBANTUKAN WORKSHEET UNTUK MENINGKATKAN KEMAMPUAN TRIGONOMETRI MAHASISWA PROGRAM STUDI PENDIDIKAN MATEMATIKA STKIP BINA BANGSA GETSEMPENA
Authors: Ega Gradini
Published: April 2020

Langkah dosen dalam menetapkan metode yang tepat untuk menyampaikan materi perkuliahan di kelas merupakan salah satu penentu keberhasilan belajar mahasiswa. Proses perkuliahan Trigonometri di STKIP Bina Bangsa Getsempena belum memperoleh hasil yang memuaskan, dengan nilai rata- rata untuk tahun perkuliahan 2011/2012 hanya mencapai 63. Hal tersebut perlu ditingkatkan melalui implementasi Model Pembelajaran Kooperatif tipe Team Assisted Individualization (TAI) dikolaborasikan dengan penggunaan Worksheet (Lembar Kerja). Subyek penelitian ini adalah mahasiswa yang memprogramkan matakuliah Trigonometri pada tahun akademik 2012/2013 yang berjumlah 18 mahasiswa yang terdiri dari 12 mahasiswi dan 6 mahasiswa. Instrumen yang digunakan dalam penelitian ini adalah tes formatif, lembar observasi mahasiswa dan aktivitas diskusi kelompok serta angket refleksi terhadap pembelajaran. Prosedur tindakan kelas ini ditempuh dalam 2 (dua) siklus. Setiap siklus terdiri dari: perencanaan, pelaksanaan, pengamatan, dan refleksi. Indikator keberhasilannya ditunjukkan dengan adanya peningkatan hasil belajar mahasiswa , yaitu apabila sekurang-kurangnya 75% hasil belajar mahasiswa pada matakuliah Trigonometri sudah mencapai sekurang- kurangnya 75. Pada siklus I rata-rata kelasnya mencapai 67.31, mahasiswa yang memiliki nilai > 75 sebanyak 11 orang (62,5%) dan yang < 75 sebanyak 7 mahasiswa (37,5%) dengan nilai tertinggi 98 dan nilai terendah 45. Pada siklus I untuk nilai rata-rata hasil belajar yang diperoleh sudah mencapai indikator yang ditetapkan, tetapi untuk prosentase ketercapaian nilai > 75 masih dibawah 75%. Pada siklus II rata-rata kelasnya mencapai 75, mahasiswa yang memiliki nilai > 75 sebanyak 15 orang (84.62%) dan yang memiliki nilai < 75 adalah 3 orang (15.38%) dengan nilai tertinggi 95 dan nilai terendah 53. Pada siklus II hasil belajar yang diperoleh sudah mencapai indikator yang ditetapkan. Berdasarkan hasil penelitian di atas, dapat disimpulkan bahwa melalui implementasi model pembelajaran kooperatif tipe TAI berbantuan LKS dapat meningkatkan hasil belajar mahasiswa pada matakuliah Trigonometri. Berdasarkan hasil penelitian ini diharapkan agar dosen menerapkan model pembelajaran kooperatif tipe TAI berbantuan Worksheet untuk meningkatkan hasil belajar Trigonometri mahasiswa .
THE IMPLEMENTATION OF MEDIA IN ENGLISH LANGUAGE TEACHING
Authors: Regina Rahmi
Published: April 2020

This study which was conducted at SD Islam Laboratorium Neuhen, Mesjid Raya is intended to figure out how the implementation of media in English language teaching to the six levels. The study was conducted case study research design. The population was 44 and the sample was taken by using nonprobability sample that is convenience sampling was 22 students and 1 English teacher. The research problems are: (1) what kinds of media are used by the teacher in teaching English? (2) how does the teacher implement media in teaching English? (3) what are the obstacles faced by the teacher in teaching English by using media (4) what are students’ responses toward using media in English language teaching? The data were collected by using instruments, namely: observation checklist sheets, questionnaire sheet, interview guidelines, and documentations.Based on the data analysis, it was found that (1) the English teacher at SD Islam Laboratorium used (a) smart phone as audio media (b) visual printed media such as book, magazine and newspaper (c) visual display media such as picture, flashcard, poster, realia/model/mock up, puzzle and blackboard (d) teacher herself as model (2) the teacher did three phases in using media. They are: (a) preparation; learning curriculum and syllabus, the teacher matches the basic competences with appropriate media, preparing the media, bring the media to the class, recognizing the types of the students (b) core activity; students’ question about media, student-centered in learning process while using media, good interaction in using media, cognitive-affective-psychomotor of the student in using media (c) closing; summarization of using media, motivation/moral value of using media, giving homework. In addition the teacher did positive performance in using media (3) some difficulties faced by the teacher in the implementation of media in English language teaching, they are: designing lesson plan and preparing appropriate teaching materials as media (4) the students' responses toward the implementation of media was very positive. The findings show that 90% of the students like to study English by using media. So, it is suggested that English teacher should use the media, because they are the effective tools in English teaching-learning process.