bluuebunny/crossref_metadata_2025 huggingface dataset:
Studi Persepsi Risiko pada Proyek Konstruksi Bidang Pengairan Di Sumatera Barat
Authors: Nengsi Dwi Putri , Ophiyandri Taufika
Published: September 2020

Industri konstruksi memiliki lebih banyak risiko dibanding industri yang lain. Risiko merupakan peristiwa yang tidak diharapkan karena mengandung ketidakpastian. Contoh risiko yang tidak diketahui kapan terjadinya adalah banjir. Menurut data BNPB dalam lima tahun terakhir, tren bencana banjir di Sumatera Barat cenderung meningkat. Kejadian banjir memiliki risiko yang besar dalam pelaksanaan proyek khususnya bidang pengairan. Untuk itu sangat penting mengidentifikasi dan mengetahui persepsi pengguna jasa maupun penyedia jasa dalam memandang risiko. Sehingga dapat menentukan dengan benar pihak yang paling bertanggung jawab dalam memitigasi risiko. Penelitian ini bertujuan untuk mengidentifikasi persepsi risiko dari pengguna jasa dan penyedia jasa. Pengumpulan data menggunakan kuesioner yang disebar kepada pengguna jasa dan penyedia jasa yang terlibat dalam proyek pengairan di Sumatera Barat. Faktor-faktor risiko diperoleh dari studi literatur dan penelitian terdahulu. Pengolahan data dengan cara analisis data parametrik dan nonparametrik menggunakan program statistik SPSS. Hasil penelitian menunjukan bahwa keadaan cuaca hujan lebat merupakan risiko paling sering terjadi. Sedangkan risiko yang sangat berdampak terhadap waktu pelaksanaan konstruksi adalah rumitnya masalah perijinan atau pembebasan lahan, Responden konsisten dalam menentukan risiko yang harus dibagi atau ditanggung oleh pengguna atau penyedia jasa. Namun, ditemukan bahwa banyak risiko diputuskan secara ragu-ragu dan responden memiliki persepsi yang berbeda mengenai risiko.
Analisa Nilai Hasil Terhadap Waktu pada Proyek Pembangunan Gedung Laboratorium FKIP Tahap IV (Lanjutan) Universitas Jambi
Authors: Azizah Siti Umi , Yamali Fakhrul Rozi , Handayani Elvira
Published: September 2020

Didalam pengendalian waktu dan pengendalian biaya pada suatu proyek sangat diperlukan agar suatu proyek mampu menyelesaikan proyek sesuai dengan waktu yang telah di rencanakan dan dengan biaya yang telah direncanakan. Metode analisis nilai hasil (Earned Value Analysis) adalah salah satu cara untuk mengetahui perkembangan proyek yang sedang berlangsung dengan menggunakan tiga indikator, yaitu ACWP, BCWS dan BCWP. Tujuan dari penelitian ini adalah untuk mengkaji dan mengendalikan waktu dan biaya serta memantau indeks kinerja proyek pelaporan pada pembangunan gedung laboratorium Fkip tahap IV (lanjutan) Universitas Jambi. Dari hasil perhitungan diperoleh nilai schedule variance (SV) sebesar (-14,88%), hasil ini menunjukkan pelaksanaan pekerjaan terlambat dari jadwal rencana proyek. Nilai cost variance (CV) sebesar (-6,51%), hasil ini menunjukkan biaya lebih besar dari anggaran yang telah di rencanakan. Nilai budget variace (BV) sebesar (7,28%), hasil ini menunjukkan bahwa anggaran yang digunakan lebih besar dari pada anggaran yang telah direncanakan. Prakiraan waktu penyelesaian proyek (EAS) selama 26,29 minggu dengan prakiraan total waktu penyelesaian proyek 0,29 minggu, hal ini menunjukkan bahwa penyelesaian proyek lambat dari jadwal yang telah direncanakan, dengan nilai kontrak yaitu dalam kurun waktu 26 minggu. Untuk prakiraan biaya penyelesaian proyek (EAC) sebesar Rp. 18.512.224.334,00 dengan sisa anggaran yaitu Rp. -1.127.524.334,00, hal tersebut menunjukkan bahwa biaya yang dikeluarkan lebih besar dari anggaran pelaksanaan, dengan total anggaran biaya sebesar Rp. 17.384.700.000,00.
The reading strategy of undergraduate and graduate students in the direction of preparation “Library and Information Activities”
Authors: Grushevskaya N. V. , Finogina L. S. , Golubeva N. L.
Published: September 2020

The article presents the results of a study on the use of reading strategies among students of the information and library faculty The developed method is based on the types of reading (by purpose and methods), information resources necessary for each type. The types of “reading for educational purposes” in this strategy are arranged according to their priority: for undergraduate students, first comes educational, then general cultural, self-educational, scientific and leisure reading; for graduate students – scientific, educational, self-educational, general cultural and leisure reading. It was revealed that the differentiation of “reading for educational purposes” is a condition for the implementation of a strategic approach in the formation of the reader’s competency for the future librarian, and allows one to successfully master all the competencies necessary for professional activity and the development of a holistic system of training library staff on a single conceptual basis. The authors reveal the methodology of working with types of reading separately for undergraduate and graduate students. The experimental results of control and experimental groups of students are given. Particular attention is paid to the relationship of reading types with the generated competencies required by future library specialists. The article is intended for teachers and specialists in the field of library and information activities.
Pengaruh Kualitas Pelayanan Antenatal, Pengetahuan dan Dukungan Keluarga terhadap Minat Kunjungan Ulang Ibu Hamil
Authors: Suryani Nia , Arini Nining
Published: September 2020

Angka Kematian Ibu (AKI) di Indonesia masih tinggi. Salah satu bentuk pelayanan kesehatan ibu hamil di wilayah kerja Puskesmas berupa pelayanan antenatal. Ibu hamil dianjurkan melakukan kunjungan  Antenatal Care (ANC) minimal empat kali selama kehamilan. Penelitian ini bertujuan mengetahui pengaruh kualitas pelayanan, pengetahuan dan dukungan keluarga terhadap minat kunjungan ulang ibu hamil di Puskesmas Karangan tahun 2019. Metode penelitian yang digunakan adalah metode inferensial dengan pendekatan cross sectional (potong lintang). Populasi dalam penelitian ini adalah semua ibu hamil yang terdata dari bulan April sampai bulan Desember tahun 2019 di Puskesmas Karangan berjumlah 494 orang. Sampel yang digunakan sebanyak 83 responden. Metode analisis yang digunakan uji regresi linier berganda menggunakan SPSS. Hasil analisis korelasi parsial menunjukkan bahwa kualitas pelayanan (p value = 0,000), pengetahuan (p value = 0,000), dan dukungan keluarga (p value = 0,000) berkorelasi terhadap minat kunjungan ulang ibu hamil di Puskesmas Karangan tahun 2019. Hasil analisis multivariat dengan uji regresi linier berganda juga menghasilkan bentuk persamaan regresi linier: Y=6,333+0,161X1+0,290X2+0,467X3. Nilai tersebut masing-masing bernilai positif yang menunjukkan bahwa hubungan antara semua variabel terhadap minat kunjungan ulang termasuk hubungan yang searah. Peneliti menyarankan kepada tenaga kesehatan untuk meningkatkan konseling dan edukasi yang intensif mengenai pentingnya pemeriksaan kehamilan selama kehamilan.
Hubungan Senam Prenatal Yoga dengan Tingkat Kecemasan Ibu Hamil Primigravida Trimester III
Authors: Situmorang Ronalen Br. , Rossita Taufianie , Rahmawati Diyah Tepi
Published: September 2020

Yoga dapat memberikan pengaruh positif pada kesehatan tubuh, psikologi, perasaan. Tujuan latihan yoga menciptakan keseimbangan jiwa, raga, ketenangan, mempersiapkan ibu hamil secara fisik, mental, spiritual proses persalinan. Dengan ada persiapan, ibu akan lebih percaya diri dan memperoleh keyakinan menjalani persalinan dengan lancar serta tidak mengalami kecemasan. Tujuan penelitian ini untuk mengetahui hubungan senam prenatal yoga dengan tingkat kecemasan pada ibu hamil primigravida trimester III.  Metode penelitian kuantitatif bivariat dengan pendekatan Quasy Eksperimenpre pre post test with one group design. Analisis data menggunakan uji Statistik T-Test Dependen. Sampel sebanyak 33 ibu hamil primigravida trimester III dengan tehnik purposive sampling.  Hasil penelitian menunjukkan bahwa senam prenatal yoga menurunkan tingkat kecemasan pada ibu hamil primigravida yang berarti terdapat perbedaan yang bermakna antara senam prenatal yoga dengan tingkat kecemasan pada ibu hamil primigravida trimester III (Pv=0,000). Senam yoga merupakan senam yang sangat aman, mudah, praktis dan perlu diterapkan secara mandiri dan berkesinambungan untuk dapat meningkatkan kesehatan. Namun masih diperlukan penelitian lanjutan untuk hasil yang lebih valid dan relevan.
A Comprehensive Literature Review on the Pandemic Coronavirus Disease 2019 (COVID-19)
Authors: Shahera Umme , Sultana Nahida , Haq Kazi MD Zafrul
Published: September 2020

Background: A large number of patient developed pneumonia of unknown cause in the capital cityWuhan of Hubei province in China during the month of Dec 2019, with clinical presentations greatlyresembling viral pneumonia while some rapidly progressed to severe illness and fatal outcome. InternationalCommittee on Taxonomy of Viruses (ICTV) named the virus severe acute respiratory syndrome coronavirus2 (SARS-CoV-2) and WHO officially named the disease COVID-19. World Health Organization (WHO) onJanuary 30 declared the outbreak as a public health emergency of international concern due to rapidglobal spread. On 11 February 2020, WHO announced that “COVID-19” (meaning coronavirus disease-2019) will be the official name of the disease. This report reviews the genetic structure, infection source,transmission route, pathogenesis, clinical characteristics, and treatment and prevention of the SARS-CoV-2, so that it can provide references for follow-up research, prevention and treatment, and may helpreaders to have the latest understanding of this new infectious disease. Information have been gatheredmainly from relevant researches and papers that were published recently.

Methods: For this narrative review, more than 50 relevant scientific articles and reports wereconsidered from various databases (e.g., Google Scholar, PubMed and Science Direct) using keywordssuch as SARS-CoV-2; COVID-19; coronavirus; pneumonia; respiratory infection

Results: The results from this review show that the situation is rapidly evolving, as human-to-humantransmission is occurring, and the number of new cases and mortalities is increasing by the day andon a global level. There is still ambiguity about mutation risks and how the virus spreads as thesource was not yet identified. Major gaps in knowledge about the origin of the virus, epidemiologyand transmission impose a great challenge, which emphasizes the need for further studies in thefuture.

Conclusion: There are neither vaccines nor effective treatments for the disease caused by the virus,but efforts are typically confined to symptomatic and supportive management. Antivirals andcorticosteroids were used in severe illness but had no effective outcome.

Bangladesh J Medicine July 2020; 31(2) :94-101
Diffuse Oligosymptomatic Caroli’s Disease: Case Report
Authors: Y Lemfadli , S Bouchrit , A Ait Errami , S Oubaha , Z Samlani , K Krati
Published: September 2020

This article describes a case of Caroli’s disease in a 53-year-old female patient who complained nonspecificabdominal pain without cholestasis or cholangitis. Ultrasound and hepatic magnetic resonanceimaging showed segmental saccular dilations connected to intrahepatic bile ducts without hepaticfibrosis. This clinical case shows the possibility of having oligosymptomatic forms in the diffuse formsof Caroli disease, therefore the interest to consider this diagnosis in case of non-specific abdominalsigns and to request a hepatic ultrasound.

Bangladesh J Medicine July 2020; 31(2) : 107-110
HRCT Evolution in COVID 19 Patient
Authors: Amin Md Robed , Rahman Md Khalilur
Published: September 2020

Abstract Not Available

Bangladesh J Medicine July 2020; 31(2) : 120-121
Cinsel Eğitime Yönelik Tutum Ölçeği: Güvenilirlik ve Geçerlilik Çalışması
Authors: Ceylan Şehnaz , Artan İsmihan , Kurnaz Adıbatmaz Fatma Betül
Published: September 2020

Araştırmada Cinsel Eğitime Yönelik Tutum Ölçeği (CETÖ)’nin geliştirilmesi amaçlanmıştır. Denemelik formu ve Ebeveynler İçin Cinsel İletişim Ölçeği 199 kişiye uygulanmış, elde edilen veriler kullanılarak Açımlayıcı Faktör Analizi (AFA) yapılmıştır. Nihai form 39 maddedir ve dört faktörlüdür. Elde edilen veriler üzerinde Doğrulayıcı Faktör Analizi (DFA) uygulanmış ve uyum iyiliği indislerinin yüksek olması nedeniyle yapının doğrulandığı sonucuna ulaşılmıştır. Nihai form Toplumsal Cinsiyet Algısı Ölçeği ile birlikte üçüncü bir grupta (N=200) tekrar denenerek elde edilen veriler üzerinde DFA yapılarak sonuçlar kontrol edilmiştir. Ölçeğin, cinsel eğitime yönelik tutumları belirlemede geçerli sonuçlar üretebildiği sonucuna ulaşılmıştır. Ayrıca ebeveynlerin cinsiyetlerinin cinsel eğitime yönelik tutumlarında anlamlı bir farka yol açmadığı ancak öğrenim düzeylerinin cinsel eğitime yönelik tutumlarında yükseköğretim mezunlarının lehine anlamlı bir farka yol açtığı belirlenmiştir. Ebeveynlerin cinsel eğitime yönelik tutumları ile cinsel eğitimde kullandıkları iletişim dili arasında pozitif ve manidar ilişkilerin olduğu belirlenmiştir.
Оцінка (класифікація) силових елементів літальних апаратів за областями технічного стану використовуючи статистичний метод розпізнавання та метод експертів
Authors: Strela Maxim , Dobridenko Oleg , Gorokhov George
Published: September 2020

Відповідно до діючого курсу підтримки справності авіації Збройних Сил України виникла проблема забезпечення справності парку літальних апаратів та виконання точної класифікації технічного стану силових елементів різних типів літаків для своєчасного виявлення їх граничного стану. Мета статті полягає в оприлюдненні результатів дослідження щодо системи класифікації технічного стану – системи розпізнавання образів. В статті розглянуто проблематику щодо вибору ефективного методу розпізнавання, головні вимоги до нього, проаналізовано обраний метод класифікації технічного стану (або розпізнавання образів технічного стану), який заснований на статистичному методі розпізнавання. Виконана реалізація методу в графічній оболонці (для застосування на персональних електронно-обчислювальних машинах) за допомогою мови програмування Python та допоміжних наукових і графічних бібліотек. Обрані еталонні об’єкти, визначені основні визначальні параметри, які характеризують інтенсивність вичерпання ресурсного потенціалу, які були розділені на два образи технічного стану, а саме на “добрі” та “погані”, та контрольний досліджуваний об’єкт. Як приклад, проаналізовано технічний стан відповідального силового елемента літака-винищувача Збройних Сил України, які мають приблизно однакові ресурсні напрацювання, та різні статистичні дані щодо інтенсивності використання в процесі експлуатації. Проаналізовано адекватність роботи методу за допомогою експертів, надані рекомендації у вигляді рішень управління щодо досліджуваного об’єкта.
Formalization of problem and justification of the set of principles of construction of the system of restoration of weapons and military equipment
Authors: Dachkovskyi Vоlodymyr
Published: September 2020

Analysis of wars and armed conflicts in recent years confirms that the success of mechanized, tank, assault and other military formations (units) will depend on the effectiveness of the system of supply of troops (forces).

The location of military formations (units) engaged in hostilities in a permanent state of combat readiness will depend on the effectiveness of the system of restoration of damaged samples of weapons and military equipment.

Therefore, in this work on the basis of the analysis of the current state of functioning of the system of restoration of weapons and military equipment in the conditions of operation (combat operations) the problem is formulated and the set of principles of construction of the system of restoration of armaments and military equipment is substantiated.
Методичний підхід до обґрунтування показників вогневої потужності зенітного ракетного комплексу (системи)
Authors: Open’ko Pavlo , Lukyanchuk Vadym , Nikolaev Ivan , Dzeverin Igor , Drannyk Pavlo
Published: September 2020

Результати досліджень, що опубліковано в статті, будуть корисні для фахівців логістичного забезпечення, які займаються питаннями створення (модернізації) зразків озброєння та військової техніки. У статті викладається методичний підхід щодо порядку обґрунтування вимог до показників вогневої потужності перспективного зенітного ракетного комплексу (системи), який передбачає оцінку складових вогневої потужності – пошукових можливостей, вогневої продуктивності та вогневого ресурсу з урахуванням інтенсивності нальоту засобів повітряного нападу, дальності і умов застосування зенітного ракетного комплексу (системи) за кожним типом цілей. Наведений перелік показників вогневої потужності, а саме – середній час виявлення і розпізнавання цілі, інтенсивність розвідки цілей, щільність потоку пусків ракет (темп стрільби), час підготовки першого пуску, імовірність ураження цілі, середня витрата ракет на одну ціль. Показано, що показники вогневої потужності перспективного зенітного ракетного комплексу (системи) при заданому рівні захищеності мають визначатись за умови знищення визначеної групи повітряних цілей з ймовірністю, не нижче заданого рівня. Обґрунтування вимог до вогневої потужності перспективного зенітного ракетного комплексу (системи) доцільно здійснювати з використанням комплексу математичних моделей, що забезпечує можливість дослідження сценаріїв конфліктно-інформаційної взаємодії перспективного зенітного ракетного комплексу (системи) і повітряних цілей у вигляді імітаційного машинного експерименту. Показано, що за результатами моделювання повинні визначатись показники пошукових можливостей, вогневої продуктивності і вогневого ресурсу перспективного зенітного ракетного комплексу (системи), а також величина математичного очікування кількості уражених цілей при витраченні зенітних керованих ракет, встановлених на пускових установках.
Determination of Commercially Available Biogas Production Capacity and Effects on Methane Capture in Tekirdağ Province
Authors: KAYİŞOĞLU Birol , GÖNCÜ Simge
Published: September 2020

This research was carried out in farms which have 100 and more cows with commercial biogas production capacity, in 2019 in Tekirdağ. This is because it is stated that if the livestock enterprises have at least 100 animals, biogas production can be realized economically. The distribution and number of farms with this feature in districts were provided from Tekirdağ Food, Agriculture and Livestock Provincial Directorate. Biogas is generally used by converting it to heat and electrical energy. While it is used mostly for heating purposes in small farms, electricity and heat energy are provided in CHP units in large farms. Total methane production potential and energy value were calculated as 22466 Nm3day-1 and 81756.4 MWhyear-1, respectively. The highest methane production potential and energy value is in Muratlı district and the least is in Çerkezköy district. It was determined that 42512.48 MWhyear-1 useful heat energy and in CHP unit 28614.17 MWhyear-1 electricity energy and 19784.65 MWhyear-1additional heat energy could be obtained from methane produced by anaerobic fermentation. It is determined that 19067.56 tonsCO2eyear-1 of methane will be released if the manure is stored outdoors. It was determined that methane emission could be reduced by 1087.13 tons CO2eyear-1 if the nitrogen was used in fermentation residues instead of the chemical fertilizer. Total methane retention in the use of methane for heat purposes will be 31590.55 tons CO2eyear-1. Methane emissions will be reduced by 12522.99 tons CO2eyear-1 when used for heat purposes, than the conditions in which the manure is stored outdoors. When methane is used in the CHP unit to provide electricity and heat energy, total methane retention is calculated as 38467.6 tons CO2eyear-1, and the decrease in methane emission is calculated as 19400 tons CO2eyear-1. In animal husbandry enterprises that are located in Tekirdağ and are commercially producing, evaluation of manure without long-term storage by means of anaerobic digestion is important in terms of meeting of the energy requirement and reducing methane emission and the government should encourage enterprises in this regard.
PENERAPAN METODE BERMAIN JARI TANGAN DALAM MENGEMBANGKAN KEMAMPUAN KOGNITIF PADA ANAK KELAS A DI RAUDHATUL ATHFAL MA’ARIF 01 METRO
Authors: Dea Leli Fertiliana , Setiawan Agus
Published: September 2020

This study aims to determine whether the application of the method of finger play can develop cognitive abilities in class A children in Raudhatul Athfal Ma’arif 01 Metro. This study used a qualitative approach, with the type of Classroom Action Research (CAR). This study uses a design according to the Kemmis model and Taggart MC which consists of four stages, namely: 1. Planning, 2. Action, 3. Observation, and 4. Reflection ". The subjects of this study were class A children in Raudhatul Athfal Ma’arif 01 Metro 2018/2019 academic year as many as 15 children. The research instrument uses the method of documentation, observation and interviews. Data analysis techniques used quantitative descriptive statistics. The results of the first cycle, indicators of success in cognitive abilities are 60% increased to 80% in cycle II.
Political Science and Biology: Then, Now, and Next
Authors: Somit Albert , Peterson Steven
Published: September 2020

Biology and Politics (or Biopolitics) has been a part of the political science firmament since the 1960s. Over time, it has become less an odd outlier in the discipline and more a tolerated (and sometimes respected) part of the enterprise. After about 50 years of existence, this is a proper time to reflect on where biopolitics has been, where it is now, and where it might go as an academic endeavor. Indeed, some have said that the best step would for biopolitics to no longer be seen as a special, narrow part of political science—but a part of every field in the discipline, integrated into the larger world of the study of politics.
Förskollärares barnsyn kan motverka eller förstärka könsstereotyper
Authors: Westman Anna-Karin
Published: September 2020

Vuxnas syn på feminitet och maskulinitet påverkar hur de bemöter barn. I en studie undersökte forskare hur förskollärarstudenter resonerade om situationer där barn intresserade sig för naturvetenskap. Resultaten visar på två huvudsakliga synsätt: att barns intressen kan utvecklas oberoende av kön, respektive att könsstereotypa beteende är medfödda.
Management of Geographic Tongue in a Patient with Mango Alergy Accompanied with Fissure Tongue, Oral Candidiasis and Cheilitis
Authors: Hernawati Sri
Published: September 2020

The tongue is a solid organ formed by skeletal muscles that has an important function as the sense of taste, mastication, swallowing, and speaking. There are several physiological conditions on the tongue which can be pathological conditions e.g. Geographic tongue and Fissured tongue. This situation may occur due to trigger factors e.g. allergic reactions. Allergies of certain fruits e.g. mangoes are very rare. However, in some patients those cases may cause immediate or delayed hypersensitivity reactions. A 40-year-old male patient complained that his tongue felt sore after eating a lot of mango salad, after clinical examination the results showed clinical appearance were: 1) island-shaped atrophy, surrounded by white edges, pain; 2) fissure, multiple, redness, pain; 3) yellowish white plaque, can be scraped, no clear boundary, no pain in the dorsum of the tongue. In addition to the extraoral examination there were abnormalities in the upper and lower lips of the patient in the form of fissure, vertical, multiple, accompanied by desquamation. The final diagnosis the patient was geographic tongue with fissured tongue, oral candidiasis in the dorsum of the tongue, and cheilitis on the upper and lower lips. Therapy provided to patient was topical benzidamine HCl oral oral anti-inflammatory medicine, oral suspension topical nystatin antifungal, OM ointment, Becomzet multivitamin (Vitamin B complex, A, C, E, and Zinc) as multivitamin and tongue cleaner. Two weeks after treatment with benzydamine HCL which acts to inhibit TNFα and prostaglandin, administration of ointments that are analgesic and help the healing process (for geographic tongue and fissure tongue), and administration of nystatin for oral candidiasis, nystatin a macrolide polyene whose toxicity low and specific for candida albicans, accompanied by multivitamins that help the healing process, tongue geography, tongue fissure and oral candidiasis heal.

Keywords: fissure tongue; oral candidiasis; cheilitis; mango
La plataforma Schoology en el aprendizaje de la matemática en estudiantes secundarios
Authors: Avalos Monterrey Eliana Rosa , Vásquez León Shirley Mirella , Pereyra Romero Flor de María
Published: September 2020

El estudio de naturaleza aplicada, tuvo como objetivo demostrar en qué medida, aplicar la plataforma Schoology influyó en los estudiantes del ciclo VI de secundaria en su aprendizaje correspondiente al área de matemática, haciendo uso de estrategias dinámicas y creativas, que les permitan desarrollar competencias matemáticas, como respuesta a la problemática estudiantil. La metodología utilizada responde  a un enfoque cuantitativo, con un método hipotético deductivo, asimismo, se utilizó un diseño cuasi experimental, conformado por dos grupos  llamados; pre test y post test; para lo cual se tomó una muestra no probabilística e intencional que comprendió a estudiantes de secundaria en un numero de 60, aplicándoles un cuestionario, de acuerdo a la prueba de normalidad. Se determinó la utilización de una prueba para muestras independientes, conocida como la T de Student para contrastar  las hipótesis, antes y después de la utilización de estrategias dinámicas y creativas en la aplicación de la plataforma; llegando a la siguiente conclusión: El aplicar la plataforma Schoology influyó en forma significativa para el aprendizaje en las matemática en los estudiantes del VI ciclo de Secundaria, San Miguel, 2019, (T= 4,737: gl= 58; p ‹ 0,05).
Gamificación como técnica didáctica en el aprendizaje de las Ciencias Naturales
Authors: Mallitasig Sangucho Angélica Janeth , Freire Aillón Teresa Milena
Published: September 2020

Hacer de la educación una actividad lúdica que motive al estudiante a construir su propio aprendizaje es un reto para la comunidad educativa, sin embargo, la gamificación es una nueva técnica que en el contexto educativo mejora el aprendizaje significativo en cualquier campo del conocimiento. Por consiguiente, el presente trabajo de investigación demuestra los beneficios teóricos de la gamificación en un proceso real de aprendizaje, el objetivo es medir el logro de aprendizaje en Ciencias Naturales de los jóvenes de noveno año de la “Escuela de Educación Básica Naciones Unidas”; antes y después de la utilización de herramientas Kahoot y Plickers como parte de la gamificación, para lo cual se aplicó la Escala de Estrategias de Aprendizaje ACRA calificada en escala de Likert. Mediante análisis estadísticos se determinó que existe un considerable aumento de las estrategias de aprendizaje de los estudiantes en Ciencias Naturales, así al inicio la media global de la prueba fue de 2,3 puntos y al finalizar el programa de 6 semanas el puntaje global fue de 3,5 de una escala de 4; además mediante la prueba T-student se puede concluir que la gamificación si influye positivamente en el proceso de aprendizaje de los estudiantes de dicha institución educativa. Como conclusión, la gamificación es una técnica pedagógica innovadora que combina los elementos del juego para que el estudiante interioriza el conocimiento y viva el aprendizaje como una experiencia positiva y satisfactoria.
Evaluación del impacto de diversos factores macroeconómicos en el crecimiento económico del Ecuador, 1965-2018.
Authors: Ruso León Jorge Antonio , Contreras Chacón Edmundo Ricardo , Villamar Ortiz Digna Priscila
Published: September 2020

La medición del crecimiento económico, a través de su principal indicador, el Producto Interno Bruto, es fundamental para los responsables de la política económica de un país. Existen tres formas diferentes de calcular el Producto Interno Bruto, una de ellas es el método de gasto que incluye en su cálculo cinco importantes variables macroeconómicas. Esta investigación tiene como objetivo cuantificar la incidencia de cada una de esas variables en el crecimiento económico del Ecuador. Para ello, utilizando la información correspondiente a esas variables para el período 1965-2018, se estimó, mediante una regresión lineal múltiple por mínimos cuadrados ordinarios, la ecuación para el cálculo del Producto Interno Bruto por el método de gasto, una vez que ésta fue validada estadísticamente se analizaron los coeficientes estandarizados de cada variable macroeconómica involucrada en la misma para evaluar cuán determinante es para el Producto Interno Bruto del Ecuador. Se demostró que el consumo es la variable que mayor peso tiene para generar demanda agregada, seguida de las exportaciones, contrariamente la inversión se revela como la variable macroeconómica que menos incide en el crecimiento económico ecuatoriano. Como conclusiones fundamentales se determinó que el consumo es el principal determinante del crecimiento económico del Ecuador por lo que políticas que lo reduzcan provocan directamente una afectación sobre el crecimiento económico, asimismo, se halló que la inversión es el componente que menos impacta lo cual implica la necesidad de que se diseñen políticas que la incentiven.
Genome-Wide Association Mapping through 90K SNP Array for Quality and Yield Attributes in Bread Wheat against Water-Deficit Conditions
Authors: Muhu-Din Ahmed Hafiz Ghulam , Sajjad Muhammad , Zeng Yawen , Iqbal Muhammad , Habibullah Khan Sultan , Ullah Aziz , Nadeem Akhtar Malik
Published: September 2020

The decrease in water resources is a serious threat to food security world-wide. In this regard, a genome-wide association study (GWAS) was conducted to identify grain yield and quality-related genes/loci under normal and water-deficit conditions. Highly significant differences were exhibited among genotypes under both conditions for all studied traits. Water-deficit stress caused a reduction in grains yield and an increase in grains protein contents (GPC) and gluten contents (GLC). Population structure divided the 96 genotypes into four sub-populations. Out of 72 significant marker-trait associations (MTAs), 28 and 44 were observed under normal and water-deficit stress conditions, respectively. Pleiotropic loci (RAC875_s117925_244, BobWhite_c23828_341 and wsnp_CAP8_c334_304253) for yield and quality traits were identified on chromosomes 5A, 6B and 7B, respectively, under normal conditions. Under a water-deficit condition, the pleiotropic loci (Excalibur_c48047_90, Tdurum_contig100702_265 and BobWhite_c19429_95) for grain yield per plant (GYP), GPC and GLC were identified on chromosomes 3A, 4A and 7B, respectively. The pleiotropic loci (BS00063551_51 and RAC875_c28721_290) for GPC and GLC on chromosome 1B and 3A, respectively, were found under both conditions. Besides the validation of previously reported MTAs, some new MTAs were identified for flag leaf area (FLA), thousand grain weight (TGW), GYP, GPC and GLC under normal and water-deficit conditions. Twenty SNPs associated with the traits were mapped in the coding DNA sequence (CDS) of the respective candidate genes. The protein functions of the identified candidate genes were predicted and discussed. Isolation and characterization of the candidate genes, wherein, SNPs were mapped in CDS will result in discovering novel genes underpinning water-deficit tolerance in bread wheat.
Clinoptilolite Zeolite on Tropical Peat Soils Nutrient, Growth, Fruit Quality, and Yield of Carica papaya L. cv. Sekaki
Authors: Choo Liza Nuriati Lim Kim , Ahmed Osumanu Haruna , Talib Shaidatul Azdawiyah Abdul , Ghani Mohamad Zabawi Abdul , Sekot Shamsiah
Published: September 2020

Papaya cultivation on nutrient deficient acidic peat soils causes poor growth, yield, and fruit quality of this crop. Alkalinity and the high affinity of clinoptilolite zeolite (CZ) for macronutrients could improve pH, nutrient availability, and papaya productivity on peat soils. A one-year field experiment was conducted to determine the effects of CZ on: (i) soil ammonium, nitrate, P, and K, and (ii) growth, yield, and fruit quality of papaya grown on a peat soil. Treatments evaluated were: (i) different amounts of CZ (25%, 50%, 70%, and 100% of the existing recommended rate of CZ) + NPK fertilizer, and (ii) NPK fertilizer alone. The peat soils with CZ improved pH, ammonium, nitrate, P, and K availability because of the sorption of these nutrients within the structured framework of the CZ. Co-applying CZ (70% to 100%) and NPK fertilizers improved the NPK contents in papaya leaves and the growth, yield, and fruit quality of papaya because of the significant availability of ammonium, nitrate, P, and K in the peat soil for their optimum uptake by the papaya plants. Ability of CZ to buffer the soil pH reduced the need for liming. It is possible to use CZ to improve papaya productivity because CZ can regulate nutrient availability.
Isolation and Characterization of Plant Growth Promoting Endophytic Bacteria from Desert Plants and Their Application as Bioinoculants for Sustainable Agriculture
Authors: ALKahtani Muneera D. F. , Fouda Amr , Attia Kotb A. , Al-Otaibi Fahad , Eid Ahmed M. , Ewais Emad El-Din , Hijri Mohamed , St-Arnaud Marc , Hassan Saad El-Din , Khan Naeem , Hafez Yaser M. , Abdelaal Khaled A. A.
Published: September 2020

Desert plants are able to survive under harsh environmental stresses inherent to arid and semiarid regions due to their association with bacterial endophytes. However, the identity, functions, and the factors that influence the association of bacterial endophytes with desert plants are poorly known. These bacterial endophytes can be used as an untapped resource to favor plant growth and development in agro-ecosystems of arid regions. The present study is therefore focused on the isolation and identification of bacterial endophytes from two native medicinal plants (Fagonia mollis Delile and Achillea fragrantissima (Forssk) Sch. Bip.) growing spontaneously in the arid region of the South Sinai (Egypt), and characterization of their plant growth promoting (PGP) traits. Thirteen putative bacterial endophytes were isolated from the leaves of both plant species and characterized for their plant growth promoting abilities using molecular and biochemical approaches, as well as greenhouse trials. Selected endophytic bacterial strains were applied to maize plants (Zea mays L. var. Single cross Pioneer 30K08) to further evaluate their PGP abilities under greenhouse conditions. Isolated bacterial strains have variable plant growth promoting activities. Among these activities, isolated bacterial endophytes have the efficacy of phosphate solubilizing with clear zones ranging from 7.6 ± 0.3 to 9.6 ± 0.3 mm. Additionally, the obtained bacterial endophytes increased the productivity of indole acetic acid (IAA) in broth media from 10 to 60 µg·mL−1 with increasing tryptophan concentration from 1 to 5 mg·mL−1. Bacillus and Brevibacillus strains were frequently isolated from the leaves of both plant species, and had significant positive effects on plant growth and shoot phosphorus (P) and nitrogen (N) contents. Results suggest that these endophytes are good candidates as plant growth promoting inoculants to help reduce chemical input in conventional agricultural practices and increase nutrient uptake and stress resilience in plant species.
Trait-Based Root Phenotyping as a Necessary Tool for Crop Selection and Improvement
Authors: McGrail Rebecca , Van Sanford David , McNear David
Published: September 2020

Most of the effort of crop breeding has focused on the expression of aboveground traits with the goals of increasing yield and disease resistance, decreasing height in grains, and improvement of nutritional qualities. The role of roots in supporting these goals has been largely ignored. With the increasing need to produce more food, feed, fiber, and fuel on less land and with fewer inputs, the next advance in plant breeding must include greater consideration of roots. Root traits are an untapped source of phenotypic variation that will prove essential for breeders working to increase yields and the provisioning of ecosystem services. Roots are dynamic, and their structure and the composition of metabolites introduced to the rhizosphere change as the plant develops and in response to environmental, biotic, and edaphic factors. The assessment of physical qualities of root system architecture will allow breeding for desired root placement in the soil profile, such as deeper roots in no-till production systems plagued with drought or shallow roots systems for accessing nutrients. Combining the assessment of physical characteristics with chemical traits, including enzymes and organic acid production, will provide a better understanding of biogeochemical mechanisms by which roots acquire resources. Lastly, information on the structural and elemental composition of the roots will help better predict root decomposition, their contribution to soil organic carbon pools, and the subsequent benefits provided to the following crop. Breeding can no longer continue with a narrow focus on aboveground traits, and breeding for belowground traits cannot only focus on root system architecture. Incorporation of root biogeochemical traits into breeding will permit the creation of germplasm with the required traits to meet production needs in a variety of soil types and projected climate scenarios.
Pharmacokinetics of Repeated Oral Dosing with Coenzyme Q10 in Cavalier King Charles Spaniels with Myxomatous Mitral Valve Disease
Authors: Christiansen Liselotte B. , Morsing Malene K. , Reimann Maria Josefine , Martinussen Torben , Birlie Zita , Schou-Pedersen Anne Marie V. , Lykkesfeldt Jens , Olsen Lisbeth H.
Published: September 2020

Coenzyme Q10 (Q10) is a mitochondrial cofactor and an antioxidant with the potential to combat oxidative stress in heart failure. This study aims to determine the pharmacokinetics of repeated oral dosing of Q10 in Cavalier King Charles Spaniels (CKCS) with spontaneous myxomatous mitral valve disease (MMVD) and to evaluate echocardiographic parameters, circulating cardiac biomarkers, and quality of life (QoL) after treatment. The study is a randomized, placebo-controlled, single-blinded crossover study. Nineteen CKCS with MMVD were randomized to receive 100 mg Q10 (ubiquinone) bi-daily for three weeks, then placebo (or in reverse order). Clinical examination, blood sampling, echocardiography, and QoL assessment were performed before and after each treatment phase. Q10 plasma concentrations were determined in plasma using a validated high-performance liquid chromatography method using electrochemical detection (HPLC-ECD). Eighteen CKCS were included in the analyses. Total plasma concentration of Q10 increased significantly (p < 0.0001) from baseline (median, 0.92 µg/mL; interquartile range (IQR), 0.70–1.26) to after treatment (median, 3.51 µg/mL; IQR, 2.30–6.88). Thirteen dogs reached the threshold of a total plasma Q10 concentration of ≥2.0 µg/mL. The average half-life (T1/2) of Q10 was 2.95 days (IQR, 1.75–4.02). No significant differences were observed in clinical MMVD severity, and the owner perceived QoL between Q10 and placebo treatment. The solubilized Q10 formulation was well-tolerated in the dogs. Individual variation in plasma concentrations was observed following oral treatment. A long-term placebo-controlled trial is warranted in dogs with MMVD to determine long-term efficacy on the clinical severity of MMVD.
Oxidative Stress and Neuroinflammation as a Pivot in Drug Abuse. A Focus on the Therapeutic Potential of Antioxidant and Anti-Inflammatory Agents and Biomolecules
Authors: Berríos-Cárcamo Pablo , Quezada Mauricio , Quintanilla María Elena , Morales Paola , Ezquer Marcelo , Herrera-Marschitz Mario , Israel Yedy , Ezquer Fernando
Published: September 2020

Drug abuse is a major global health and economic problem. However, there are no pharmacological treatments to effectively reduce the compulsive use of most drugs of abuse. Despite exerting different mechanisms of action, all drugs of abuse promote the activation of the brain reward system, with lasting neurobiological consequences that potentiate subsequent consumption. Recent evidence shows that the brain displays marked oxidative stress and neuroinflammation following chronic drug consumption. Brain oxidative stress and neuroinflammation disrupt glutamate homeostasis by impairing synaptic and extra-synaptic glutamate transport, reducing GLT-1, and system Xc− activities respectively, which increases glutamatergic neurotransmission. This effect consolidates the relapse-promoting effect of drug-related cues, thus sustaining drug craving and subsequent drug consumption. Recently, promising results as experimental treatments to reduce drug consumption and relapse have been shown by (i) antioxidant and anti-inflammatory synthetic molecules whose effects reach the brain; (ii) natural biomolecules secreted by mesenchymal stem cells that excel in antioxidant and anti-inflammatory properties, delivered via non-invasive intranasal administration to animal models of drug abuse and (iii) potent anti-inflammatory microRNAs and anti-miRNAs which target the microglia and reduce neuroinflammation and drug craving. In this review, we address the neurobiological consequences of brain oxidative stress and neuroinflammation that follow the chronic consumption of most drugs of abuse, and the current and potential therapeutic effects of antioxidants and anti-inflammatory agents and biomolecules to reduce these drug-induced alterations and to prevent relapse.
A Fast-Response Calorimeter with Dynamic Corrections for Transient Heat Transfer Measurements
Authors: Zhang Shizhong , Wang Qiu , Li Jinping , Zhang Xiaoyuan , Chen Hong
Published: September 2020

Robust fast-response transient calorimeters with novel calorimeter elements have attracted the attention of researchers as new synthetic materials have been developed. This sensor uses diamonds as the calorimeter element, and a platinum film resistance is sputtered on the back to measure the temperature. The surface heat flux is obtained based on the calorimetric principle. The sensor has the advantages of high sensitivity and not being prone to erosion. However, non-ideal conditions, such as heat dissipation from the calorimeter element to the surroundings, can lead to measurement deviation and result in challenges for sensor miniaturization. In this study, a novel transient calorimeter (NTC) with two different sizes was developed using air or epoxy as the back-filling material. Numerical simulations were conducted to explain the complex heat exchange between the calorimeter element and its surroundings, which showed that it deviated from the assumption of an ideal calorimeter sensor. Accordingly, a dynamic correction method was proposed to compensate for the energy loss from the backside of the calorimeter element. The numerical results showed that the dynamic correction method significantly improved the measurement deviation, and the relative error was within 2.3% if the test time was smaller than 12 ms in the simulated cases. Detonation shock tunnel experiments confirmed the results of the dynamic correction method and demonstrated a practical method to obtain the dynamic correction coefficient. The accuracy and feasibility of the dynamic correction method were verified in a single detonation shock tunnel and under shock tube conditions. The NTC calorimeter exhibited good repeatability in all experiments.
Cooperative and Multimodal Capabilities Enhancement in the CERNTAURO Human–Robot Interface for Hazardous and Underwater Scenarios
Authors: Veiga Almagro Carlos , Lunghi Giacomo , Di Castro Mario , Centelles Beltran Diego , Marín Prades Raúl , Masi Alessandro , Sanz Pedro J.
Published: September 2020

The use of remote robotic systems for inspection and maintenance in hazardous environments is a priority for all tasks potentially dangerous for humans. However, currently available robotic systems lack that level of usability which would allow inexperienced operators to accomplish complex tasks. Moreover, the task’s complexity increases drastically when a single operator is required to control multiple remote agents (for example, when picking up and transporting big objects). In this paper, a system allowing an operator to prepare and configure cooperative behaviours for multiple remote agents is presented. The system is part of a human–robot interface that was designed at CERN, the European Center for Nuclear Research, to perform remote interventions in its particle accelerator complex, as part of the CERNTAURO project. In this paper, the modalities of interaction with the remote robots are presented in detail. The multimodal user interface enables the user to activate assisted cooperative behaviours according to a mission plan. The multi-robot interface has been validated at CERN in its Large Hadron Collider (LHC) mockup using a team of two mobile robotic platforms, each one equipped with a robotic manipulator. Moreover, great similarities were identified between the CERNTAURO and the TWINBOT projects, which aim to create usable robotic systems for underwater manipulations. Therefore, the cooperative behaviours were validated within a multi-robot pipe transport scenario in a simulated underwater environment, experimenting more advanced vision techniques. The cooperative teleoperation can be coupled with additional assisted tools such as vision-based tracking and grasping determination of metallic objects, and communication protocols design. The results show that the cooperative behaviours enable a single user to face a robotic intervention with more than one robot in a safer way.
Cooperation Based Proactive Caching in Multi-Tier Cellular Networks
Authors: Ahmad Fawad , Ahmad Ayaz , Hussain Irshad , Uthansakul Peerapong , Khan Suleman
Published: September 2020

The limited caching capacity of the local cache enabled Base station (BS) decreases the cache hit ratio (CHR) and user satisfaction ratio (USR). However, Cache enabled multi-tier cellular networks have been presented as a promising candidate for fifth generation networks to achieve higher CHR and USR through densification of networks. In addition to this, the cooperation among the BSs of various tiers for cached data transfer, intensify its significance many folds. Therefore, in this paper, we consider maximization of CHR and USR in a multi-tier cellular network. We formulate a CHR and USR problem for multi-tier cellular networks while putting major constraints on caching space of BSs of each tier. The unsupervised learning algorithms such as K-mean clustering and collaborative filtering have been used for clustering the similar BSs in each tier and estimating the content popularity respectively. A novel scheme such as cluster average popularity based collaborative filtering (CAP-CF) algorithm is employed to cache popular data and hence maximizing the CHR in each tier. Similarly, two novel methods such as intra-tier and cross-tier cooperation (ITCTC) and modified ITCTC algorithms have been employed in order to optimize the USR. Simulations results witness, that the proposed schemes yield significant performance in terms of average cache hit ratio and user satisfaction ratio compared to other conventional approaches.