bluuebunny/crossref_metadata_2025 huggingface dataset:
Transforming Colloidal Cs4PbBr6 Nanocrystals by Poly(maleic anhydride-alt-1-octadecene) into Stable CsPbBr3 Perovskite Emitters Through Intermediate Heterostructures
Authors: Baranov Dmitry , Caputo Gianvito , Goldoni Luca , Dang Zhiya , Scarfiello Riccardo , Trizio Luca De , Portone Alberto , Fabbri Filippo , Camposeo Andrea , Pisignano Dario , Manna Liberato
Published: February 2020

The preparation of strongly emissive CsPbBr3 perovskite nanocrystals with a robust surface passivation is a challenge in the field of lead halide perovskite nanomaterials. We report an approach to prepare polymer-capped CsPbBr3 perovskite nanocrystals by reacting oleylammonium/oleate-capped Cs4PbBr6 nanocrystals with poly(maleic anhydride-alt-1-octadecene) (PMAO). PMAO contains succinic anhydride units that are reactive towards the oleylamine species present on Cs4PbBr6 nanocrystals’ surface and produces polysuccinamic acid, which, in turn, triggers the Cs4PbBr6 to CsPbBr3 conversion. The transformation occurs through the formation of Cs4PbBr6-CsPbBr3 heterostructures as intermediates, which were captured because of the mild reactivity of PMAO and were investigated by high-resolution electron microscopy. The Cs4PbBr6-CsPbBr3 heterostructures demonstrate a dual emission at cryogenic temperature with an indication of the energy transfer from Cs4PbBr6 to CsPbBr3. The fully-transformed CsPbBr3 NCs have high photoluminescence quantum yield and enhanced colloidal stability, which we attribute to the adhesion of polysuccinamic acid to the NC surface through its multiple functional groups in place of oleate and alkylammonium ligands. The PMAO-induced transformation of Cs4PbBr6 NCs opens up a strategy for the chemical modification of metal halide NCs initially passivated with nucleophilic amines.
Mental health and wellbeing of Pacific students : Protocol of a prospective cohort study
Authors: Sopoaga Faafetai , Nada-Raja Shyamala , Leckie Tracie , Samaranayaka Ari
Published: February 2020

Introduction

Mental disorders are a significant health concern and an increasing burden for Pacific youth in New Zealand. Approximately 30,000 (30%) of Pacific youth aged 18-24 years are enrolled in tertiary studies with sparse information about their mental health and wellbeing. There is increasing recognition of the impact of stresses and emotional problems faced by students in tertiary institutions internationally. This study seeks to describe Pacific tertiary students’ mental health and wellbeing, their expectations and experiences. It seeks also to determine risk and protective factors, access and barriers to using health services and their impact on students’ academic progress.

Methods

All Pacific students enrolling for the first time and in their first year of study at the University of Otago in 2019 will be invited to participate and followed over 3 years. A mixed-method research approach will be used with a survey obtaining information from all eligible students. Of these, 30 students will be randomly selected to participate in four interviews over the study period. Research objectives will be addressed by using quantitative statistical methods to analyse cross-sectional and longitudinal self-reported data linked to administrative data.  The Talanoa methodology  and a thematic approach will inform qualitative data collection and analysis.   

Findings/Outcomes measure

The primary mental health measures are the Kessler 10 (distress), PHQ-9 (depression) and the GAD-7 (anxiety). The primary wellbeing measure utilises a validated Pacific Identity and Wellbeing (PIWBS-R) scale and the WHO-5 (subjective wellbeing). Secondary measures include alcohol use, students’ experience and academic progress.  Interviews will provide in-depth perspectives of the students’ journeys, and the relationship to their mental health and wellbeing including the impact on students’ academic progress.

Conclusions

This research seeks to better understand the factors that influence the mental health, wellbeing and academic success of Pacific students in tertiary institutions. The findings will be used to inform advocacy approaches and guide targeted support efforts.
СКОРРЕКТИРОВАННЫЕ ЧИСТЫЕ НАКОПЛЕНИЯ В АНАЛИЗЕ УСТОЙЧИВОСТИ РЕГИОНАЛЬНЫХ СОЦИАЛЬНО-ЭКОНОМИЧЕСКИХ СИСТЕМ
Authors: Марков Борис Евгеньевич
Published: February 2020

Актуальность проблемы исследования заключается в необходимости разработки методического подхода к оценке устойчивого развития экономик регионов, исходя из показателей скорректированных чистых накоплений (СЧН). Цель работы: разработать предложения для внесения изменений в состав корректировок, направленные на повышение релевантности индекса для оценки устойчивости, с учетом особого внимания регионам – экспортерам природных ресурсов. Методы. В ходе работы проведен анализ отдельных составных частей индекса СЧН и сформированного на его основе эколого-экономического индекса, оценка их основных свойств и признаков. В результате исследования на основании проанализированных фактов автором были предложены рекомендации о составе необходимых изменений в состав индекса, которые могут быть использованы органами государственной власти и местного самоуправления для разработки методов оценки устойчивого развития отдельных регионов, прежде всего, тех, экономика которых ориентирована на экспорт природных ресурсов. Автор пришел к выводам об уместности использования эколого-экономического индекса для оценки с внесением изменений в состав корректировок.
АНАЛИЗ И РЕЙТИНГ СОСТОЯНИЯ ОКРУЖАЮЩЕЙ СРЕДЫ ПО РЕГИОНАМ ЦФО РФ
Authors: Прокопьев Михаил Григорьевич , Витухин Антон Дмитриевич
Published: February 2020

Цель работы. Целью настоящего исследования является анализ существующих методических подходов к обоснованию рейтингов состояния окружающей среды и экологической безопасности как в РФ, так и за рубежом, обоснование и апробация методики расчета рейтинга регионов, основанной на официальной доступной информации, на примере Центрального федерального округа Российской Федерации. Методология проведения работы. Методологической основой исследования является поэтапное построение рейтинга на основе единой системы показателей с использованием объективной статистической информации. На первом этапе формируются матрицы исходных показателей по следующим направлениям оценки состояния окружающей среды: «Состояние водных ресурсов», «Состояние воздуха», «Загрязнения земель». Рейтинговые индикаторы по направлениям оценки состояния окружающей среды базируются на методе расстояний, который позволяет оценить степень отклонения конкретного показателя от лучшего по данному признаку значения показателя по всем регионам выборки. Интегральный рейтинговый индикатор получен как среднеарифметическое (среднегеометрическое) значение индексов по направлениям оценки состояния окружающей среды. Полученные результаты. Рассчитан рейтинг субъектов ЦФО по уровню состояния окружающей среды. В нижней части рейтинга сформировалась устойчивая группа субъектов: г. Москва, Московская, Липецкая, Тульская и Белгородская области. Данные субъекты имеют низкие рейтинги по всем трем направлениям оценки состояния окружающей среды. Лидерами рейтинга являются Тверская и Костромская области. Выводы. Предложенная методика расчета экологического рейтинга позволяет судить о состоянии окружающей среды регионов на основе единых объективных статистических показателей, проанализировать сложившуюся дифференциацию регионов в данной сфере. В этом принципиальное отличие настоящего рейтинга от рейтинга Общероссийской общественной организации «Зеленый патруль», который формируется на основе оперативной информации и характеризует не столько состояние окружающей среды, сколько отражает направление воздействия (положительное или отрицательное) тех или иных мероприятий, значимых событий и выявленных проблем в сфере экологии.
СТРУКТУРНЫЕ ЭЛЕМЕНТЫ ДЕЛОВОЙ СРЕДЫ И ИХ ВЛИЯНИЕ НА ФУНКЦИОНИРОВАНИЕ СУБЪЕКТОВ МАЛОГО бизнеса и предпринимательства
Authors: Арипов Ойбек Абдуллаевич
Published: February 2020

Предмет (цель) работы. В статье рассматриваются основные структурные элементы деловой среды. Так как в Узбекистане быстро развивается малый бизнес и частное предпринимательство. Метод или методология проведения работы. При изучении предмета использовались такие методы, как логическое мышление, научное мышление, системный подход, статистический и сравнительный анализ. Результаты. Проанализировано конкретное состояние деловой среды, а также разработаны предложения по улучшению деловой среды. Проведенный анализ показывает, что в Узбекистане формируется более благоприятная деловая среда. Сегодняшние обстоятельства указывают, что деловая среда в Узбекистане содействует экономическому развитию. Так как сложившейся компоненты деловой среды оказывают положительное влияние на рост субъектов малого бизнеса в стране. Но формирование и развитие деловой среды в Узбекистане характеризуются своеобразными особенностями. А также сравнительный анализ показывает, что в развитии малого бизнеса и частного предпринимательства в Узбекистане существует ряд нерешенных проблем. Не следует исключать, что рейтинг Узбекистана по улучшению бизнес-среды по сравнению с некоторыми странами СНГ отстает. Но сегодня совершенствуется правовая база для улучшения малого бизнеса и предпринимательства и дальнейшего улучшения бизнес-среды. Область применения результатов. Результаты проведенного исследования могут быть использованы при анализе улучшения деловой среды в разных странах, разработке конкретных подходов развитию малого бизнеса и частного предпринимательство в регионах. Выводы. Делается вывод о том, что деловая среда в странах СНГ развивается по разному уровню. В то же время целесообразно изучить опыт таких стран, как Грузия, Литва и Эстония. Кроме того, в Узбекистане принимаются специфические меры по улучшению деловой среды.
CТРАТЕГИРОВАНИЕ ЭКОНОМИЧЕСКОГО РАЗВИТИЯ РОССИИ В КОНТЕКСТЕ ОБЕСПЕЧЕНИЯ НАЦИОНАЛЬНОЙ БЕЗОПАСНОСТИ
Authors: Городецкий Андрей Евгеньевич , Зиядуллаев Наби Садкаримович
Published: February 2020

Предмет. В статье рассматриваются приоритеты экономического роста через призму исторических моделей экономического успеха, характерные черты опыта трансформации национальных стратегий развития. Анализируется ход исполнения майских (2012 и 2018 гг.) Указов Президента РФ и механизмы их успешной реализации. Впервые обосновываются «красные линии экономической безопасности» – критические зоны в экономике и управлении, пересечение границ которых чревато реальными угрозами и рисками с точки зрения фундаментальных вызовов национальной безопасности и стратегическому развитию. Цель работы. Целью настоящей статьи является исследование особенностей трансформации национальных стратегий развития; выявление проблем реализации стратегических целей и приоритетов развития в контексте обеспечения национальной безопасности. Методология исследования. В процессе исследования использованы методы эволюционно-институционального анализа, статистической и аналитической оценки. Результаты работы. На основе анализа результатов экономического развития национальных хозяйств ряда стран Европы, Ближнего и Среднего Востока, Юго-Восточной Азии и постсоциалистических государств Евразии обобщены трансформационные механизмы экономического развития ряда стран, сделаны выводы и определены уроки для России. Обоснована взаимосвязь стратегических задач и стратегических проектов с обеспечением национальной экономической безопасности. В рамках первоочередных проблем обеспечения национальной и экономической безопасности актуализируются вопросы о гарантиях и механизмах исполнения новых национальных стратегических задач и национальных стратегических проектов, в частности, майского 2018 г. Указа Президента РФ. Выводы. Предложены концептуальные подходы к формированию эффективных механизмов реализации стратегических направлений экономического развития в контексте обеспечения национальной безопасности. Сформулированы выводы о необходимости непосредственного увязывания механизмов реализации национальных стратегических приоритетов социально-экономического развития с обеспечением их экономической безопасности, систематизации соответствующих вызовов, угроз и рисков, определения подходов к их упреждению, отражению и нейтрализации. Область применения результатов. Результаты исследования могут быть использованы в правотворческой деятельности по совершенствованию механизмов стратегического развития национальной экономики.
ОПОРНЫЕ УНИВЕРСИТЕТЫ: РЕГИОНАЛЬНЫЕ ДРАЙВЕРЫ РАЗВИТИЯ
Authors: Петросянц Даниэл Викторович
Published: February 2020

Цель работы. Проанализировать современное состояние развития опорных университетов с точки зрения создания в них конкурентоспособных центров регионального развития. Методология исследования основана на общих и специальных методах научного познания: методах эмпирического исследования (наблюдение, сравнение, сбор и изучение данных), текущего и перспективного анализа и синтеза теоретического и практического материала, многофакторного системного анализа, социологии, статистического анализа и т. п. Результаты. В ходе исследования были выявлены особенности развития опорных университетов, проанализированы различные аспекты их деятельности. Произведено детальное картирование развития университетов СКФО по широкому спектру параметров и показателей. Автор отмечает отсутствие внятных параметров, применяемых при формировании КЦП в опорные университеты, слабую связь этих цифр с реальной экономикой. Область применения. Результаты настоящей работы могут иметь применение в деятельности Министерства науки и высшего образования РФ при планировании КЦП университетов, постановке задач университетам региона в части синхронизации с администрациями по выполнению национальных проектов, программ социально-экономического развития субъектов Федерации. Выводы. Развитие института опорных университетов должно следовать и соответствовать общемировым тенденциям развития института современного университета.
ЭВОЛЮЦИЯ ИЗУЧЕНИЯ ЦИКЛИЧНОСТИ ЭКОНОМИЧЕСКОГО РАЗВИТИЯ: ЭКОЛОГИЧЕСКИЕ ВЫЗОВЫ
Authors: Пепеляева Анна Владиславовна , Васильева Екатерина Елисеевна , Крутова Александра Валентиновна
Published: February 2020

Целью исследования является разработка общих принципов изучения цикличности экономического развития территорий с учетом определяющих его современных экологических вызовов. Объект исследования: циклическое развитие территориальной экономической системы. Предмет исследования: экологические параметры циклического развития. Задачи исследования: 1. Систематизировать существующие подходы к изучению циклических явлений в экономике. 2. Определить в них место и значимость экологических параметров экономического развития. 3. Сформировать базовые принципы для изучения циклической трансформации территориальной экономической системы с учетом современных экологических вызовов. Методы исследования: системный анализ и синтез, метод группировки. Результаты работы: на основе систематизации существующих подходов к формированию наиболее популярных концепций циклической трансформации социально-экономических систем сформированы базовые принципы для изучения экологической компоненты циклического развития территориальной экономической системы. Выдвинуто предположение о том, что динамика изменения экологических параметров в процессе циклической трансформации территориальной экономической системы характеризует фазовое состояние системы, а ее оценка может использоваться для повышения эффективности управления территориальным развитием. Область применения результатов определяется необходимостью учета экологических параметров при моделировании цикличности экономики.
Peningkatan Keterampilan Berpikir Kritis dan Hasil Belajar Siswa Kelas 4 SD melalui Model Pembelajaran Discovery Learning
Authors: Yulianti Rahayu Ratih Dwi , Mawardi Mawardi , Astuti Suhandi
Published: February 2020

Penelitian ini berangkat dari kondisi keterampilan berpikir kritis siswa kelas 4 SD N Karangduren 02 masih rendah dan berdampak pada hasil belajar yang rendah pula. Berdasarkan latar belakang tersebut tujuan dilakukannya penelitian ini ialah meningkatkan keterampilan bepikir kritis dan hasil belajar melalui Model Pembelajaran Discovery Learning. Jenis penelitian yang digunakan adalah PTK yang dilakukan dalam 2 siklus. Instrumen pengumpulan data diantaranya tes yang berupa soal tes untuk mengukur tingkat ketercapaian hasil belajar dan nontes berupa rubrik penilaian tugas untuk mengukur tingkat berpikir kritis peserta didik. Analisis data pada penelitian ini ialah analisis deskriptif komparatif. Tingkat bepikir kritis dan hasil belajar pada pra-siklus diantaranya berpikir kritis pada kategori sangat tinggi sebesar 7%, kategori tinggi sebesar 41%, dan kategori rendah sebesar 52%  sehingga berdampak pada hasil belajar dengan presentase 46% mencapai ketuntasan dan 64% belum mencapai ketuntasan. Setelah dilakukannya penelitian tahap siklus I keterampilan berpikir kritis peserta didik meningkat menjadi 22% berada pada kategori sangat tinggi, 63% pada kategori tinggi, 15% pada kategori rendah. Hasil belajar peserta didik 63% sudah mencapai ketuntasan dan 37% belum mencapai ketuntasan. Pada siklus II meningkat lebih signifikan yaitu 63% dari keseluruhan peserta didik tingkat berpikir kritis  berada pada kategori sangat tinggi dan 37% berada pada kategori tinggi, hasil belajar peserta didik juga terlihat 85% peserta didik mencapai ketuntasan dan 15% peserta didik belum mencapai ketuntasan.
Pengaruh Model Teams Games Tournament dan Student Team Achievement Division terhadap Hasil Belajar IPA di Sekolah Dasar
Authors: Baktini Liga Wulan , Rahayu Theresia Sri , Wasitohadi Wasitohadi
Published: February 2020

Abstrak : Penelitian ini bertujuan untuk menguji perbedaan pengaruh hasil belajar IPA dengan menggunakan model Teams Games Tournament (TGT) dan Student Achievement Division (STAD). Jenis penelitian yang digunakan dalam penelitian ini adalah Quasi Experiment Design. Instrumen pengumpulan data yang digunakan dalam penelitian ini yaitu teknik tes, observasi dan studi dokuken. Berdasarkan hasil uji-t diperoleh nilai t- test sebesar 0,865 dengan sig. (2- tailed) 0,391 > 0,05, maka H0 diterima karena nilai probabilitas > 0,05 sedangkan Ha ditolak. Ini menunjukkan bahwa tidak terdapat perbedaan pengaruh yang signifikan antara model pembelajaran TGT dan STAD pada hasil belajar IPA pada siswa kelas IV di Gugus Ki Hajar Dewantara, Kecamatan Tengaran, Kabupaten Semarang.
PROFIL PENALARAN SISWA SMP DALAM PEMECAHAN MASALAH MATEMATIKA TIMSS DITINJAU DARI PERBEDAAN GENDER
Authors: Sukriadi Sukriadi , Kurniawan Kurniawan
Published: February 2020

Penelitian ini bertujuan untuk mendeskripsikan profil penalaran siswa SMP kelas VIII gender laki-laki dan perempuan dalam pemecahan masalah matematika TIMSS di SMPN 5 Samarinda. Penelitian ini merupakan jenis penelitian eksploratif dengan pendekatan kualitatif. Penggunaan pendekatan kualitatif didasarkan atas pertimbangan karena penelitian ini berlatar alami dan instrumen utama dalam penelitian ini adalah peneliti sendiri. Analisis dilakukan secara mendalam pada siswa gender laki-laki dan perempuan dalam memecahkan masalah matematika yang diberikan. Tahapan analisis data dalam penelitian ini meliputi tahap klasifikasi data, reduksi data, penyajian data, dan interpretasi data. Hasil penelitian menunjukkan bahwa subjek gender laki-laki mampu memahami masalah dengan baik informasi yang diketahui dan kecukupan informasi dari masalah matematika TIMSS, serta dapat melakukan penyelesaian dengan baik dan mengungkapkan bahwa langkah yang dilakukan telah sesuai dengan rencana. Sedangkan penalaran subjek gender perempuan yaitu subjek telah mampu memahami masalah dengan menyebutkan informasi yang diketahui, namun belum mampu menganalisis masalah dengan tepat, sehingga pada tahap melaksanakan pemecahan masalah subjek gender perempuan menunjukkan hasil yang belum baik.
How nasopharyngeal pneumococcal carriage evolved during and after a PCV13-to-PCV10 vaccination programme switch in Belgium, 2016 to 2018
Authors: Wouters Ine , Desmet Stefanie , Van Heirstraeten Liesbet , Herzog Sereina A , Beutels Philippe , Verhaegen Jan , Goossens Herman , Van Damme Pierre , Malhotra-Kumar Surbhi , Theeten Heidi ,   NPcarriage Study Group
Published: February 2020

Background

The current carriage study was set up to reinforce surveillance during/after the PCV13-to-PCVC10 switch in Belgium.

Aim

This observational study monitored carriage of Streptococcus pneumoniae (Sp) serotypes, particularly those no longer covered (3, 6A, 19A), as well as Haemophilus influenzae (Hi), because PCV10 contains the non-typeable Hi protein D.

Methods

A total of 2,615 nasopharyngeal swabs from children (6–30 months old) attending day care were collected in three periods over 2016–2018. Children’s demographic and clinical characteristics and vaccination status were obtained through a questionnaire. Sp and Hi were identified by culture and PCR. Pneumococcal strains were tested for antimicrobial (non-)susceptibility by disc diffusion and serotyped by Quellung-reaction (Quellung-reaction and PCR for serotypes 3, 6A, 19A).

Results

The carriage prevalence of Sp (> 75%) remained stable over the successive periods but that of Hi increased (87.4%, 664 Hi-carriers/760 in 2016 vs 93.9%, 895/953 in 2017–2018). The proportion of non-PCV13 vaccine serotypes decreased (94.6%, 438 isolates/463 in 2016 vs 89.7%, 599/668 in 2017–2018) while that of PCV13-non-PCV10 vaccine serotypes (3 + 6A + 19A) increased (0.9%, 4 isolates/463 in 2016 vs 7.8%, 52/668 in 2017–2018), with serotype 19A most frequently identified (87.9%, 58/66 isolates). Non-susceptibility of pneumococci against any of the tested antibiotics was stable over the study period (> 44%).

Conclusions

During and after the PCV13-to-PCV10 vaccine switch, the proportion of non-PCV13 serotypes decreased, mainly due to a serotype 19A carriage prevalence increase. These results complement invasive pneumococcal disease surveillance data, providing further basis for pneumococcal vaccination programme policy making.
Validation of an Aptima-format Finnish new variant of Chlamydia trachomatis (FI-nvCT) surveillance assay, 2019
Authors: Weinbaum Barbara , Williams Analee , Hadad Ronza , Vinluan Bryan , Puolakkainen Mirja , Unemo Magnus , Getman Damon
Published: February 2020

The Finnish new variant of Chlamydia trachomatis (FI-nvCT) is escaping diagnostics in Finland, Norway and Sweden. We have developed and validated an Aptima-format nucleic acid amplification test (NAAT) designed specifically to detect the FI-nvCT. This NAAT has high sensitivity (100%) and specificity (100%) for the FI-nvCT strain, enabling further investigation of the geographic distribution, prevalence and transmission of this diagnostic-escape mutant in screening populations in Europe.
UPAYA PEMANFAATAN BENIH IKAN KERAPU CANTANG YANG MEMPUNYAI BENTUK ABNORMAL UNTUK USAHA BUDIDAYA
Authors: Ismi Suko
Published: February 2020

Benih kerapu yang abnormal biasanya mempunyai harga yang sangat murah dan bahkan tidak laku untuk dijualuntuk kerapu cantang karena mempunyai pertumbuhan yang cepat benih yang cacat masih bisa dimanfaatkanyaitu untuk benih pada produksi kerapu konsumsi yang pemasarannya dalam betuk fillet. Tujuan penelitian iniadalag memanfaatkan benih ikan kerapu cantang yang cacat untuk benih budidaya sehingga mempunyai nilaitambah dan dapat menjadi satu usaha yang menguntungkan. Benih yang dipakai pada penelitian ini adalah ikankerapu cantang yang cacat : insang, mulut dan ekor dengan ukuran panjang rata-rata 6,50 ± 0,46 cm dan berat6,21 ± 1,30 g, jumlah 9.000 ekor. Ikan dipelihara selama 120 hari pada 3 buah bak beton ukuran 2,0 x 3,0 x 1,2m yang diisi air laut dengan volume 5,0-6,0 m3 dengan kepadatan ikan masing-masing 3.000 ekor/bak, setiap 30hari kepadatan ikan dijarangkan hingga menjadi 9 bak dengan kepadatan antara 700-900 ekor/bak. Hasilpenelitian panjang rara-rata 19,91±0.37 cm dan berat 102,35 ± 2,75 g, kelangsungan hidup 82,30% dengan totalproduksi 740,7 kg, penjualan benih mengacu pada berat ikan dengan harga Rp.100.000/kg. Hasil analisismenunjukan usaha menghasilkan R/C ratio 1,68 salama satu siklus produksi, artinya usaha tersebutmenguntungkan.
HASIL TANGKAPAN IKAN KAKAP PUTIH (Latescalcarifer) PADA UKURAN MATA JARING INSANG YANG BERBEDA DI PERAIRAN PESISIR KOTA SURABAYA
Authors: Abdillah Ahmad Rifqi , Subagio Hari , Rosana Nurul
Published: February 2020

Nelayan pesisir Kota Surabaya menggunakan alat tangkap jaring insang dasar (bottom gillnet) dalammenangkap ikan kakap putih. Penelitian ini bertujuan mengetahui pengaruh ukuran mata jaring yang berbedapada jaring insang dasar. Penelitian ini di lakukan bulan Maret hingga Mei 2019 di perairan pesisir kotaSurabaya dengan metode observasi untuk mengetahui hasil tangkapan ikan kakap putih (Lates calcarifer) danpengaruh ukuran mata jaring yang berbeda. Pengambilan data dilakukan 15 kali sebagai ulangan dan 2perlakuan berupa ukuran mata jaring 6 inchi dan 7 inchi sehingga diperoleh 30 data. Hasil penelitianmenunjukan hasil tangkapan utama ikan kakap (Lates calcarifer) sebanyak 65% dan hasil tangkapansampingan sebanyak 35% diantaranya ikan laosan (Eleutheronema Tetradactylum), rajungan (Portanuspelagicus), dan dukang (Hexanematichthys). Jumlah hasil tangkapan pada mata jaring 6 inchi lebih besar daripada ukuran 7 inch. Namun berdasarkan anilisis uji t di simpulkan tidak ada pengaruh penggunaan ukuranmata jaring 6 inchi atau 7 inchi terhadap hasil tangkapan ikan kakap putih. Perbedaan jumlah hasil tangkapanikan kakap putih di antara kedua ukuran mata jaring tersebut kemungkinan di sebabkan oleh beberapa factorlingkungan yakni arus, suhu, dansalinitas.
Development and Verification of a Web Board Game Scale
Authors: Lee Choongmeong , Bae Sujin , Nam Jae Jun , Jin Jae Chan , Han Doug Hyun
Published: February 2020

Objective Our previous study suggested that monitoring online board gamers may be an efficient approach to curb illegal gambling. We aimed to invent and validate a behavioral scale for assessing the risk of problematic web-based board gaming.Methods The sample included 300 Korean adults, representing a response rate of 3.1%. All participants were asked to complete a set of questionnaires, which included questions on demographic variables, patterns of online board gaming, and the web-based board game scale score. Exploratory factor analysis was performed to determine whether the items on the new behavioral scale would indicate a risk of pathologic web-based board gaming behavior.Results The internal consistency of the 17-item scale was high (Cronbach’s α=0.89). The test-retest reliability of the 17-item scale in a randomly selected sample of 100 participants in 2 weeks was r=0.77 (p<0.001). The criterion-related validity based on a comparison of the total behavioral scale scores between the high-risk group and low-risk group was relatively high. The data obtained from the 300 participants were acceptable for a factor analysis. After removing 7 items from the 17-item scale, internal consistency (Cronbach’s α) of the 10-item scale increased to 0.936.Conclusion These results showed that the 10-item version of the scale appeared to be more valid than the 17-item version. We suggest that the 10-item web-based board game behavioral scale is a useful tool for assessing the risk of pathologic web-based board gaming.
Protective Effect of Sphaerococcus coronopifolius Crude Extract in Combination with Bacillus Calmette-Guerin on Ligature-Induced Depression in Female Wistar Rats
Authors: Fellah Fahima , Djenidi Rédha , Chebout Imen
Published: February 2020

Objective Immunomodulation is a therapeutic technique that modulates the balance of cytokines in the body. In this regard, our experiment was conducted to investigate the potential effect of S. coronopifolius crude extract in combination with low dose of Bacillus Calmette-Guerin (BCG) on depression-like behaviors in female Wistar rats.Methods Sciatic nerve injury was employed to induce depression and intradermal injection of 0.02 mL of BCG per rat was administered to lead an activation of innate immune system. Daily intra-peritoneal injections of 25 mg algae extract kg-1 body weight were performed for 14 continuous days. Forced Swimming (FS) and Open Field (OF) tests were conducted to assess despairing and spontaneous behaviors. At the end of the experiment, brain was removed to determine the activities of catalase (CAT) and glutathione-S-transferase (GST), whereas spleen and adrenals were used for the histopathological study.Results The combined treatment exhibited antidepressant-like activity in FST by reducing immobility time, without inducing any significant change in ambulatory behavior in OFT. The histological analyses of spleen and adrenal structure showed a conserved architecture.Conclusion The results suggested that algae extract produce an antidepressant-like effect in combination with low dose of BCG, which is possibly trigged by its anti-oxidant and anti-inflammatory properties.
Enrichment Preferences of Singly Housed Zebrafish (Danio rerio)
Authors: Krueger Lauren D , Thurston Sarah E , Kirk Joshua , Elsaeidi Fairouz , Freeman Zachary T , Goldman Daniel , Lofgren Jennifer L , Keller Jill M
Published: February 2020

Despite the increasing popularity of zebrafish (Danio rerio) as an animal model, the environmental enrichment preferences of this species have been largely unexplored. We sought to determine the preferences of mature female zebrafish that were singly housed with or without access
to one of 10 inanimate forms of enrichment. As a marker of preference, in-tank fish location was observed by video recording. All subjects showed a preference for the front of the tank when caretakers entered the room, demonstrating an effect of human presence on tank location. Among the 10
enrichment items tested, subjects showed the strongest preference for mirrored paper on the side of the tank when compared with the barren half of the tank. Fish also were observed interacting with PVC pipe, marbles, and tulle. Given the preference for enrichment imitating social interaction,
we conducted a second study to assess the value of visual exposure of conspecifics in adjacent tanks. The experimental zebrafish were then provided one of 3 conditions—a singly housed neighbor fish, group-housed neighbor fish, or no neighbor fish. All zebrafish housed next to neighboring
fish showed a preference to be on the side of the tank nearer to the other fish. Overall, our data indicate that singly housed zebrafish prefer enrichment items that resemble or promote social behaviors. Therefore items such as mirrored paper or housing next to conspecifics should be strongly
considered as enrichment strategies for singly housed zebrafish.
Soybean yield and performance in response to the industrial seed treatment with biostimulant fertilizer
Authors: Pereira Lucas Caiubi , Matera Thaisa Cavalieri , Braccini Alessandro Lucca , Sukukawa Andreia Kazumi , Volpato Marteli Danilo Cesar , Correia Larissa Vinis
Published: February 2020

This study aimed at evaluating, during storage, the yield components and germination of the soybean crop based on seeds industrially treated with mineral- biological fertilizer containing amino acids. To achieve this, the experiment was carried out by using a completely randomized experimental design with the treatments arranged in subdivided plots, with four replications. The plots included the industrial seed treatments (IST), while the storage periods (0 and 45 days) were allocated to the subplots. The following characteristics were assessed: germination, initial stand, number of pods per plant, number of seeds per pods, number of lateral branches per plant, thousand-seed mass and yield. Under the conditions tested, the storage period contributed to a reduction in the agronomic parameters herein assessed, especially considering the control. However, compared to the seeds submitted only to the standard IST and, especially in relation to the untreated seeds (control), the use of biostimulant fertilizer in the industrial treatment enabled an increase in the agronomic characteristics during storage.
Efecto de la temperatura y la precipitación durante el llenado de grano sobre la dormición y sensibilidad al agua en granos de cebada (Hordeum vulgare L.)
Authors: González Parodi Silvana , Viega Cazéres Luis María , Beretta Andres , Córdoba Mariano Augusto , Rossi Rodríguez Carlos Alberto
Published: February 2020

After harvesting, barley grains (Hordeum vulgare L.) can show dormancy and water sensitivity, which delays industrial use. Both effects depend on the barley genotype and environmental conditions during grain maturation. In order to analyze the effect of the average temperature and the total rainfall accumulated during and in the final third of the grain filling, on the dormancy and water sensitivity and the relationship between them, three cultivars of barley were sownin four dates in 2009 and two in 2011. Temperature and daily rainfall were recorded from anthesis to physiological maturity. The dormancy was evaluated as germination at 12 days post physiological maturity and the water sensitivity as germination in water excess conditions at 100 days post physiological maturity. The variables that presented a higher correlation with germination and water sensitivity were average temperature and accumulated rainfall during grain maturity. Environments with average high temperature during grain filling, reduced dormancy, but on water sensitivity decrease was cultivar dependent. The increase of rainfall during grain filling, decreased dormancy, but increased water sensitivity in all three cultivars.
Gestión de datos espacio-temporales de imágenes satelitales
Authors: Castillo Moine Matías Alejandro , Balzarini Mónica Graciela
Published: February 2020

The management of long time series data of Normalized Difference Vegetation Index (NDVI) over large territories demands efficient use of computational resources. This paper discusses and illustrates strategies for the construction and statistical processing of massive spatio-temporal databases from satellite images. The implementation of a data management protocol in the R software is detailed, with implementation of parallel computations. The results show that the concept divide-apply-combine was adequate to filter and classify long time series of NDVI territorially distributed at a regional scale.
Relación fuente-destino en cultivares de maní tipo runner (Arachis hypogaea L.) sembrados en Argentina
Authors: Morla Federico Daniel , Giayetto Oscar , Fernandez Elena Mercedes , Cerioni Guillermo Angel
Published: February 2020

Assimilate partitioning into reproductive structures is a relevant physiological feature in increasing peanut yield, and its analysis through the source-sink relationship is an important contribution to genetic improvement and crop management. The objective was to analyze the source-sink relationship of runner-type cultivars grown in Argentina. Two field experiments were performed, Exp1 consisted in the analysis of the cultivar Granoleico in three sowing dates during 2009-2010 and 2010-2011. In Exp2, six runner-type cultivars (Florunner, Florman, Manigran, Asem-485, Pepe-Asem and Granoleico) were sown during 2011-2012. The source-sink relationship was analyzed using two methodologies: total biomass assigned to each pod during pod filling period (g pod-1) in relation to its final weight, and analysis of the trade-off between pod number and pod weight at harvest. The lack of trade-off between pod number and weight showed that the peanut plant has conditions to fill a wide number of pods (20-57 pods plant-1) in the same way. Also, the average pod weight (1.05 g) was lower than the total plant biomass assigned to that pod during its formation (2.63 g). A marked limitation by sinks was determined, indicating the possibility of to increase the peanut yield by means of improvements in sinks size.
Development of a height estimation method based on the diameter at breast height of Prosopis alba Grisebach selected populations from a progeny trial in Santiago del Estero, Argentina
Authors: Frassoni Javier Eduardo , Joseau Marisa Jacqueline
Published: February 2020

The main objective of this work was to develop a height estimation method of Prosopis alba based on the diameter at breast height (DBH) of populations with superior characteristics selected through a progeny trial located in the INTA Experimental Agricultural Station, Province of Santiago del Estero, Argentina. The progeny trial was established in 2008 and consists of 3,671 individuals (202 families). The registered variables were DBH and total height (TH) of 123 individuals, taken at random from the three blocks that make up the trial. Linear regressions were performed to develop the model that best fits height estimation with all the sampled individuals (AI model) and, also using the data of 7 individuals - the three trees of greater diameter, the three of smaller diameter and an individual of intermediate diameter-, called the reduced height estimation model (RHEM model). AI model and RHEM model were satisfactory to estimate height of the trees based on their DBH in the trial of progenies in Santiago del Estero. However, the RHEM model offers an important saving of time and effort, simplifying the field activity.
Grid mapping of Vladimir Region flora, Russia: distribution of species reveals distribution of plant communities
Authors: Seregin A. P.
Published: February 2020

Grid maps of vegetation classes based upon distribution data of diagnostic species were compiled for Vladimir Region, Russia. Unexpectedly, most of the сlasses have clear spatial patterns within the Region, although either zonal or subzonal borders are absent here. Presence of plant communities of a certain class within the grid is confirmed by various numbers of diagnostic species for each class, ranging from 1 species for Lemnetea to 15 species for Alnetea glutinosae. Some classes have the same distribution as a dominant species (for example, Nardus stricta and Calluno-Ulicetea, Alnus glutinosa and Alnetea glutinosae). Distribution of diagnostic species clearly shows the spatial patterns of enlarged species pools that are characteristic for various habitats.
Mountain tundra of the south-eastern part of Czersky Mountain Range (classes Loiseleurio-Vaccinietea and Carici rupestris–Kobresietea)
Authors: Sinelnikova N. V.
Published: February 2020

Сlassification of mountain tundra of the south-eastern part of Czersky Range (Magadan region) has been carried out according to Braun-Blanquet approach. All communities represent 5 associations, 2 subassociations and 2 variants. New associations Cetrario nivalis–Rhododendretum redowskiani, Cetrario nivalis–Salicetum darpirensis, Cladonio stellaris–Vaccinietum uliginosi and Rhododendro parvifolii–Hedysaretum hedysaroidis, are included into the alliance Loiseleurio-Diapension (Br.-Bl., Siss. et Vlieg. 1939) Daniëls 1982, order Rhododendro-Vaccinietalia Br.-Bl. in Br.-Bl. et Jenny 1931 and class Loiseleurio-Vaccinietea Eggler ex Schubert 1960. Association Oxytropido ochotensis–Kobresietum myosuroidis ass.nov. is placed into the alliance Oxytropidion nigrescentis Ohba 1974, order Kobresio-Dryadetalia (Br.-Bl. 1948) Ohba 1974 and class Carici rupestris–Kobresietea Ohba 1974. Syntaxonomical position of Kobresia subalpine meadows is discussed. The des­cribed association presents the mountain tundra communities formed by dwarf-shrubs Rhododendron parvifolium, R. redowskianum (prostrate), Salixdarpirensis, Vaccinium uliginosum and mesophytic herb Hedysarum hedysaroides.Numerous lichens form the ground ­cover of these communities. The area of associations covers the alpine belt of Czersky and Kolymsky ranges at 1200–1400 m above s. l. Rare and endemic species, such as Poa kolymensis, P. tzvelevii, Oxytropis evenorum, O. ochotensis, Salix darpirensis, Sieversia pusilla, can be found there. The alpine belt area needs conservation and further floristic and ecological study.
(A review) Vegetation of the Czech Republic. 4. Forest and scrub vegetation / Ed. by Milan Chytrý. Praga: Academia, 2013. 551 p.
Authors: Golub V. B.
Published: February 2020

Published the last, 4th volume summary "Vegetation of the Czech Republic". The first volume was devoted to herbal and shrub vegetation (Vegetace..., 2007), the second — ruderal, and segetal vegetation of rocks and scree (Vegetace..., 2009), third — water, coastal and marsh (Vegetace..., 2011). In the fourth volume of an overview of natural and semi-natural communities forests and shrubs.
Comparison of Cambridge and Indonesian Secondary Mathematics Curricula: The Mapping of Learning Materials
Authors: Abidin Zainal
Published: February 2020

Several schools in Indonesia implement a Curriculum 2013 in conjunction with the Cambridgecurriculum on learning. In curriculum documents, there are several different things especially the learningmaterials. This study was analyzed the presentation of the teaching material in Curriculum 2013 and Cambridgecurriculum so that it can be taken into consideration in policy in planning education and learning programs.Qualitative descriptive analytical method applied in this study with the activities of collecting both thecurriculum document first, then analyzed it and then explains the results of the analysis before drawingconclusions. The results showed that there are some materials in Cambridge curriculum belonging to a lowerlevel of difficulty and depth compared to Curriculum 2013. There are differences in the presentation of thematerial in the Cambridge curriculum is presented on an ongoing basis in each class. On the contrary inCurriculum 2013, the presentation of the material is really deeper in two or one particular class only thanCambridge curriculum. In addition, overall in both the curriculum, most of the material were the same andespecially, statistics and probability materials were sustainable at each level.
Xây dựng chiến lược kinh doanh công ty cổ phần thiết bị y tế Mega giai đoạn 2019-2024
Authors: Giao Ha Nam Khanh , Phong Quan Vinh
Published: February 2020

Nghiên cứu được thực hiện nhằm đánh giá tác động của môi trường bên ngoài, môi trường bên trong đến việc kinh doanh thiết bị y tế của Công ty cổ phần Thiết bị Y tế Mega trong giai đoạn hiện tại và thời gian sắp tới. Trên cơ sở đó, xác định chiến lược kinh doanh của công ty, và đề xuất các giải pháp thực hiện chiến lược kinh doanh thiết bị y tế phù hợp với năng lực của Công ty và tình hình phát triển của thị trường thiết bị y tế trong giai đoạn 2019-2024. Kết quả cho thấy, để triển khai thành công các chiến lược này, Công ty cổ phần Thiết bị Y tế Mega cần có các giải pháp hỗ trợ về phát triển nguồn nhân lực, marketing, tài chính và xây dựng phát triển thương hiệu.
Analisis Deskriptif Soal Ujian Nasional dan Cambridge Checkpoint Pelajaran Matematika Tingkat Sekolah Menengah Pertama Tahun Ajaran 2014/2015 Berdasarkan Tipe Penyajian Soal dan Ruang Lingkup Materi
Authors: Abidin Zainal
Published: February 2020

National Examination and Cambridge Checkpoint are the instrument for evaluating the standard competence ofstudent which organized in Secondary Level. National Examination’s questions based on the National Curriculum ofIndonesia but Cambridge Checkpoint’s questions taken based on Cambridge Curriculum. The aims of this researchis analyzing the type of each question and distribution of each strands in the National Mathematics Examination 2015and Mathematics of Cambridge Checkpoint for Secondary Level 2015. This type of research is a descriptive studywith a qualitative approach. National Mathematics Examination 2015 has one paper only but Mathematics ofCambridge Checkpoint for Secondary Level 2015 has 2 papers for the test. It can be concluded that all question’stype of the National Mathematics Examination for Secondary Level 2015 are multiple choice questions. OnMathematics of Cambridge Checkpoint for Secondary Level 2015, there are various types of questions which consistof 11,43% short-answer question; 68,57% analysis question; 8,57% completing question; and 11,43% match questionfor paper 1, but 22,22% short-answer question; 58,33% analysis question; 11,11% completing question; 2,78% matchquestion; 2,78% multiple choice question; and 2,78% yes/no question for paper 2. Based on strands analyzing result,It can be determined that National Mathematics Examination for Secondary Level 2015 contain of 22,25% number;27,5 algebra; 40% geometry and measurement; 10% statistic and probability. On Mathematics of CambridgeCheckpoint for Secondary Level 2015, It can be explained that 45,72% number; 20% algebra; 17,14% geometry andmeasurement; and 17,14% statistic and probability for paper 1, and 33,33% number; 19,45% algebra; 25% geometryand measurement; and 22,22% statistic and probability for paper 2.
Satisfaction of tourists to Hoi An ancient town, Vietnam
Authors: Giao Ha Nam Khanh , Kiem Dinh , Le Thai Son  , Dung Truong Quoc
Published: February 2020

This research uses structural equation modelling (SEM) to test the correlation between service quality of the tourism destination and the satisfaction of the tourists who have visited Hội An ancient town. The research also uses the methods of Cronbach’s Alpha, exploratory factor analysis (EFA), confirmatory factor analysis (CFA) and SEM. The result shows that the tourist satisfaction has been affected by 3 factors: (1) Responsiveness; (2) Reliability; and (3) Empathy which were ranked by the importance. The research also raises some suggestions to the management and the tourist businesses at Hội An to enhance the tourists satisfaction.
Diversity neither in promises nor whispers only : gender and other factors from the OTRv4 project.
Authors: Akmut Camille
Published: February 2020

Commits : >1. (Three more participants were part of this project and hadeach 1 commit only.) Brief remarks on select other projects.
Differential contributions of implicit and explicit learning mechanisms to various contextual cues in dual adaptation
Authors: Ayala Maria Nadine , Henriques Denise
Published: February 2020

The ability to switch between different tasks accurately and efficiently is an invaluable feature to a flexible and adaptive human motor system. This can be examined in dual adaptation paradigms where the motor system is challenged to perform under randomly switching, opposing perturbations. Typically, dual adaptation doesn’t proceed unless each mapping is trained in association with a predictive cue. To investigate this, we first explored whether dual adaptation occurs under a variety of contextual cues including active follow-through movements, passive follow-through movements, active three-part lead-in movements, and static visual cues. In a final intervention, we provided our Instructed group with a compensatory strategy about the perturbations (30° CW/CCW rotations) and their relationships to each context (static visual cues). This allowed us to explore the extent by which dual learning is supported by both implicit and explicit mechanisms, regardless of whether or not they elicited dual adaptation across all the various cues. To this end, following perturbed training, participants from all experiments were asked to either use or ignore the strategy as they reached without visual feedback. This Process Dissociation Procedure teased apart the implicit and explicit contributions to dual adaptation. We found that active movement cues, but not passive ones, elicited dual adaptation. Expectedly, static visual cues didn’t elicit dual adaptation, but those in the Instruction group compensated by implementing aiming strategies. Critically, we found no implicit contributions in this Instruction group, but an effect of instruction, suggesting that explicit aiming strategies inhibit implicit mechanisms in dual adaptation. Thus, by implementing conscious strategies, dual adaptation can be easily facilitated even in cases where learning would not occur otherwise.
Making Sense of Kids' Technology Use
Authors: Mollborn Stefanie , Fomby Paula
Published: February 2020

Portable electronic devices are everywhere. Kids love them, and schools are sending them into homes. This accessibility challenges parents, who want to balance dangers like addiction, bullying, and strangers against benefits for social relationships and future careers. How are these pressures affecting kids, families, and society? Is this a new “moral panic?” What does the future hold?