Penerapan Model Pembelajaran Kooperatif Tipe Think Pair Share (Tps) Untuk Meningkatkan Hasil Belajar Matematika Siswa Kelas Iva SD Negeri 32 Pekanbaru

The research which was executed by using the application of Cooperative Learning typed Think Pair Share (TPS) in learning mathematics is aimed to handle the problem of the low learning mathematics score for the sixth grade student at Elementary School 32 Pekanbaru. This research is Class Action Research (CAR) which was executed collaboratively between researcher and homeroom teacher of the fifth a class. The research was executed in three cycles. The research data was obtained from the observations of the teacher\u27s activity and the student\u27s activity when an action was done and the result of the student\u27s evaluation in the end of each cycle. The result of the research refers to the enhancement of the student\u27s mathematics score in the fifth class of Elementary School 32 Pekanbaru after being done an action in learning by using Cooperative Model Typed Think Pair Share (TPS). This one can be seen from the score of the student\u27s evaluation. The result of learning before an action was categorized in low score is 62,36, where as in the evaluation of the first cycle is 80,90, the evaluation of the second cycle is 88,18. The percentage of the teacher\u27s activity in the first cycle is 72,92% in Good category, 91,67% in the second cycle in very good category. whereas the percentage of the student\u27s activity in the first cycle is 68,75% in Good category, the percentage in the second cycle is the last one is 87,5% in Very Good category. Based on the research and analyses, the conclusion is the application of Cooperative Learning model typed Think Pair Share (TPS) can increase the mathematics in the sixth grade student at Elementary School 32 Pekanbaru

Penerapan Model Contextual Teaching Learning (Ctl) untuk Meningkatkan Hasil Belajar IPA Siswa Kelas V Sdn 55 Kesumbo Ampai Kecamatan Mandau Kabupaten Bengkalis

The problem in this research was natural studies students achievement in five graderes (VA) SDN 55 Kesumbo Ampai stil low with average value 55,36(with KKM 65).The purpose of this research was to improve the students achievement of the five graderes(VA)SDN 55 Kesumbo Ampai ,with the implementation Contextual teaching and learning.This research was an classroom action research with two cycles in second semester 2014/2015.Before implementation Contextual teaching and learning average62,5%, after implementation contextual teaching and learning ,UH I was 66,61 that improve 35 % from before exam with average 55,36 .UH II was 75,54 that improve 52,86% .Teacher\u27s activities with the implemettation of contextual teaching and learning at firs meeting of firs 62,5% (good category),and second meeting was 68,75%(good category) at second cycle,student activities at first.Second meeting of second cycle was 93,75%.Implementation contextual teaching and learning improve natural studies students achievement of five graderes (VA)SDN 55 Kesumbo Ampai Kecamatan Mandau kabupaten Bengkalis

Pengaruh Pemanfaatan Perpustakaan terhadap Peningkatan Minat Baca Siswa di Sdn 136 Pekanbaru Tahun Peajaran 2014/2015

Of observations by the author in library SDN 136 Pekanbaru it can be seen that the facilities and infrastructure available in the library SDN 136 Pekanbaru full available, one of which is the provision of textbooks. Based on the answers to questionnaires given to students, that the library has a maximun utilization. It can be seen from all collections of books borrowed can assist students in learning activities, books borrowed, in the search and was taken by the students themselves as well as a comfortable reading room make students interested in reading book in the library SDN 136 Pekanbaru. High students wishes to obtaim reading material is increasing, the need for information is increasing and increasing learning achievement after the use of the various services available in the library SDN 136 Pekanbaru. Influence between the use of the library to increase students interest in reading simultaneously (Uji F). Based test simultaneously obtainable = 44,846 the contribution of 37,4%

Evaluation by a finite element method of the flexibility factor and fixity degree for the base plate connections commonly used

Using finite element approach, we have determined the flexibility factor and fixity degree of connections between a steel column and a reinforced concrete foundation. Two types of connections are studied. The first one consists of a base plate welded to the end of column and attached to the reinforced concrete foundation by two anchor bolts. These bolts are placed on the major axis of the I-shaped section used as column. In the second configuration, the connection comprises a base plate and four anchor bolts placed out side the flanges of the I-shaped section. Two types of loadings are used, first connections were subjected to shear force and a bending moment, in the second case, the connections were subjected to shear force, a bending moment and an axial compressive force. To take into account the real behavior of these connections, an approach treating of the contact- friction problem between the base plate and the concrete foundation is retained. The method of approach is based on a unilateral contact law in which a Coulomb friction is added. The numerical resolution is ensured by the refined Lagrangian method. The moments-rotations curves, the flexibility factor according to the distance of the top of base plate curves are drawn. The fixity degrees of the connections are determinate and their influence on the loads and deformations are evaluated.Із використанням скінченноелементного підходу визначено значення коефіцієнта гнучкості та степеня стійкості вузлів з ’єднання стальної балки із залізобетонною основою. Досліджено два типи з ’єднань: у першому стальна опорна пластина з привареною до неї вертикальною балкою кріпиться до залізобетонної основи двома анкерними болтами, які знаходяться на осі симетрії двотаврової балки, у другому - чотирма болтами. Навантаження прийнято двох типів: перше з ’єднання зазнавало дії перерізувальної сили і згинального моменту, друге - перерізувальної сили, згинального моменту та осьової сили стиску. Реальну поведінку цих з ’єднань описували за допомогою підходу, який враховує умови контакту та тертя між опорною плитою і залізобетонною основою. Підхід базується на однобічності залежності для контактної задачі з кулонівським тертям. Для підвищення точності числових розрахунків застосовано модифікований метод Лагранжа. Отримано діаграми в координатах момент-кутове переміщення та коефіцієнт гнуч- кості-відстань від вершини вертикальної балки до опорної плити. Визначено вплив степеня стійкості з’єднань на допустимі навантаження і деформації.С использованием конечноэлементного подхода определены значения коэффициента гибкости и степени устойчивости узлов соединения стальной балки с железобетонным основанием. Исследуются два типа соединений: в первом стальная опорная пластина с приваренной к ней вертикальной балкой крепится к железобетонному основанию двумя анкерными болтами, которые расположены на оси симметрии двутавровой балки, во втором - четырьмя болтами. Задавались два типа нагружения: первое соединение подвергалось действию перерезывающей силы и изгибающего момента, второе - перерезывающей силы, изгибающего момента и осевой силы сжатия. Для описания реального поведения этих соединений использовался подход, учитывающий условия контакта и трения между опорной балкой и железобетонным основанием. Подход основан на односторонней зависимости для контактной задачи с кулоновским трением. Для повышения точности численных расчетов используется модифицированный метод Лагранжа. Получены диаграммы в координатах момент-угловое перемещение и коэффициент гибкости-расстояние от вершины вертикальной балки до опорной плиты. Определено влияние степени устойчивости соединений на допустимые нагрузки и деформации

Finite Element Method for Evaluating Rising and Slip of Column–Base Plate for Usual Connections

Предложена конечноэлементная методика расчета деформирования и относительного проскальзывания креплений стальной колонны кжелезобетонному основанию. Рассмотрены два случая крепления: пластина приваривается к торцу колонны и крепится двумя или четырьмя анкерными болтами к железобетонному основанию. В конечноэлементной модели с использованием модифицированного метода Лагранжа учитывается растрескивание бетонного основания и эффекты трения. Деформирование бетонного основания описывается с помощью упругопластической модели сжатия материала. По результатам расчетов построены диаграммы перемещений элементов крепления.Запропоновано скінченноелементну методику розрахунку деформування і відносного проковзування кріплень стальної колони до залізобетонної основи. Розглянуто два випадки кріплення: пластина приварюється до торця колони і кріпиться двома або чотирма анкерними болтами до залізобетонної основи. У скінченноелементній моделі з використанням модифікованого методу Лагранжа враховується розтріскування бетонної основи й ефекти тертя. Деформування бетонної основи описується за допомогоюпружно-пластичної моделі стиску матеріалу. За результатами розрахунків побудовано діаграми переміщень елементів кріплення

Twelve-month observational study of children with cancer in 41 countries during the COVID-19 pandemic

Introduction Childhood cancer is a leading cause of death. It is unclear whether the COVID-19 pandemic has impacted childhood cancer mortality. In this study, we aimed to establish all-cause mortality rates for childhood cancers during the COVID-19 pandemic and determine the factors associated with mortality. Methods Prospective cohort study in 109 institutions in 41 countries. Inclusion criteria: children <18 years who were newly diagnosed with or undergoing active treatment for acute lymphoblastic leukaemia, non-Hodgkin's lymphoma, Hodgkin lymphoma, retinoblastoma, Wilms tumour, glioma, osteosarcoma, Ewing sarcoma, rhabdomyosarcoma, medulloblastoma and neuroblastoma. Of 2327 cases, 2118 patients were included in the study. The primary outcome measure was all-cause mortality at 30 days, 90 days and 12 months. Results All-cause mortality was 3.4% (n=71/2084) at 30-day follow-up, 5.7% (n=113/1969) at 90-day follow-up and 13.0% (n=206/1581) at 12-month follow-up. The median time from diagnosis to multidisciplinary team (MDT) plan was longest in low-income countries (7 days, IQR 3-11). Multivariable analysis revealed several factors associated with 12-month mortality, including low-income (OR 6.99 (95% CI 2.49 to 19.68); p<0.001), lower middle income (OR 3.32 (95% CI 1.96 to 5.61); p<0.001) and upper middle income (OR 3.49 (95% CI 2.02 to 6.03); p<0.001) country status and chemotherapy (OR 0.55 (95% CI 0.36 to 0.86); p=0.008) and immunotherapy (OR 0.27 (95% CI 0.08 to 0.91); p=0.035) within 30 days from MDT plan. Multivariable analysis revealed laboratory-confirmed SARS-CoV-2 infection (OR 5.33 (95% CI 1.19 to 23.84); p=0.029) was associated with 30-day mortality. Conclusions Children with cancer are more likely to die within 30 days if infected with SARS-CoV-2. However, timely treatment reduced odds of death. This report provides crucial information to balance the benefits of providing anticancer therapy against the risks of SARS-CoV-2 infection in children with cancer

Finite element method for the rising and the slip of column-plate base for usual connections

In the present paper, a finite element approach calculating the rising and the relative slip of steel base plate connections is proposed. Two types of connections are studied, the first consists on a base plate welded to the column end and attached to the reinforced concrete foundation by two anchor bolts. These bolts are placed on the major axis of the I shaped section used as column, one anchor bolt on each side of the web. In the second configuration, the connection includes a plate base and four anchor bolts placed out side the flanges of the I shaped section or hallow form. To take in account the real behaviour of this connection, a model by finite elements which considers count geometrical and material no linearties of the contact and cracking in the concrete foundation. To study the rising of the base plate, an approach treating problems of contact-friction between the base plate and the foundation is developed. This approach is based on a unilateral contact law in which a Coulomb friction is added. The numerical resolution is ensured by the increased Lagrangien method. For the behaviour of the concrete foundation, the developed model is based of a compressive elastoplastic model. The heights rising-rotations and the heights rising- slip displacements curves are plotted

Influence of Reaction pH towards the Physicochemical Characteristics of Phosphorylated Polyvinyl Alcohol-Aluminum Phosphate Nanocomposite

The present study deals with the formation of a phosphorylated polyvinyl alcohol (PPVA)-Aluminum Phosphate (AlPO4) nanocomposite, changing the pH solution under the two-step process involving the phosphorylation of polyvinyl alcohol (PVA) followed by the conjugation with AlPO4. The composite was formed by varying the pH of the solution in the range of 7–12 and the reflected changes in the product’s morphology, crystallinity, surface nature, thermal stability, etc. were recorded using FESEM, XRD, FTIR, UV-Vis spectroscopy, TGA, etc. From the analysis, it was found that the particles formed with two different sizes of the probed pH, and at pH 10 they were homogeneously distributed. In addition, the morphology of the PPVA-AlPO4 composite also seems to be altered with respect to the pH and this is due to the differences in the amount of H+ and OH− anions. Thus, from the overall analysis, it can be indicated that pH 10 needs to be maintained for the formation of a spherical shape and uniformly distributed PPVA-AlPO4 nanocomposite

Lattice Strain Analysis of a Mn-Doped CdSe QD System Using Crystallography Techniques

In this work, we report on the different sizes of manganese-doped cadmium selenide quantum dots (Mn-doped CdSe QDs) synthesized for 0 to 90 min using a reverse micelle organic solvent method and surfactant having a zinc blende structure, with physical size varying from 3 to 14 nm and crystallite size from 2.46 to 5.46 nm and with a narrow size distribution. At similar reaction times, Mn-doped CdSe QDs displayed the growth of larger QDs compared with the pure CdSe QDs. Due to the implementation of lattice strain owing to the inclusion of Mn atoms in the CdSe QD lattice, the lattice parameter was compressed as the QD size increased. Strain was induced by the particle size reduction, as observed from X-ray diffractometer (XRD) analysis. The analyses of the strain effect on the QD reduction are discussed relative to each of the XRD characteristics