bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH TEAM TEACHING TERHADAP HASIL BELAJAR PEMROGRAMAN WEB SISWA KELAS X SMK MALAKA JAKARTA
Authors: Arindy  , Moch. Sukardjo  , Aodah Diamah  
Published: February 2021

Abstrak - Tujuan penelitian adalah untuk mengetahui pengaruh penerapan team teaching pada materi pokok format teks halaman web terhadap hasil belajar siswa kelas X TKJ 1 SMK Malaka Jakarta.Penelitian yang dilakukan merupakan penelitian pra eksperimental dengan model one-group pre-test post-test design. Sampel penelitian diambil secara acak sebanyak 30 siswa. Perlakuan yang diberikan pada siswa yaitu siswa diajar menggunakan metode pembelajaran team teaching (tim pengajar). Sebelum diberi perlakuan, siswa diberikan pre-test untuk mengetahui kemampuan awal siswa, kemudian setelah diberi perlakuan siswa diberikan post-test untuk mengetahui sejauh mana peningkatan hasil belajar siswa. Instrumen pengumpulan data berupa tes, pada tes ini soal-soal diberikan dalam bentuk pilihan ganda.Instrumen pengumpulan data berupa tes, pada tes ini soal-soal diberikan dalam bentuk pilihan ganda. Dari hasil analisa data pada uji hipotesis didapat harga yaitu 25,15 dan untuk satu pihak yaitu 2,462, bila dibandingkan antara dan maka > atau 25,15 > 2,462.Kesimpulan yang dapat diambil adalah terdapat pengaruh terhadap hasil belajar siswa yang diajar menggunakan metode pembelajaran team teaching, khususnya untuk materi pokok format teks halaman web.
Kata Kunci : Metode, Pembelajaran, Pengaruh, Team Teaching, hasil belajar, SMK Malaka Jakarta.

Abstract - The purpose of this research is to know the influence of the implementation of team teaching on the subject matter of the text format of the web page to the learning result of the students of class X TKJ 1 SMK Malaka Jakarta. The research is an experimental pre experiment with one-group pre-test post-test design. The sample was taken randomly as many as 30 students. The treatment given to students is that students are taught using Teaching Teaching Method (Teaching Teams). Before being treated, students are given a pre-test to determine the students' initial ability, then after being given the students treatment is given a post-test to find out how far the improvement of student learning outcomes. Instrument data collection in the form of test, in this test the questions are given in the form of multiple choice. From the results of data analysis on the hypothesis test obtained price of is 25,15 and for one party is 2.462, when compared between and , then > or 25,15> 2,462.
The conclusion that can be taken is there is an influence on the learning outcomes of students who are taught using teaching team teaching methods, especially for the subject matter of text format web pages.
Keywords: Method, Learning, Influence, Team Teaching, learning outcomes, SMK Malaka Jakarta.
EFEKTIVITAS E-LEARNING BERBASIS MOODLE DI SMK KARYA GUNA KELAS XI TKJ II MATERI AJAR PRAKTIK JARINGAN KOMPUTER
Authors: Desi Andriani Sitanggang  , Bambang P. Adhi  , Diat Nurhidayat  
Published: February 2021

Penelitian ini dilakukan dengan tujuan untuk melihat sejauh mana peserta didik dan guru dalam menerima e-learning yang berbasis moodle pada SMK Karya Guna dalam proses pembelajaran kedepannya. Penelitian ini menggunakan pendekatan penelitian dan pengembangan (Research and Development) yang bertempat di SMK Karya Guna. Penelitian dilakukan sejak Agustus 2017 hingga Juli 2018. Penelitian ini dilakukan terhadap siswa kelas XI TKJ II yang telah mengikuti pelajaran Praktik Jaringan Komputer dan guru TKJ SMK Karya Guna. Tahapan dari penelitian ini adalah potensi dan masalah yang ada, rancangan produk, pembuatan produk, uji coba produk, revisi produk dan implementasi. Penelitian ini diujikan kepada dosen ahli media, dosen ahli e-learning, guru dan siswa. Hasil pengujian dari ahli media untuk versi 3 mendapatkan nilai presentase 88%, oleh ahli e-learning sebesar 85,71, oleh siswa dan guru (kelompok besar) sebesar 92,26% dan 90%. Berdasarkan hasil uji tersebut, dapat disimpulkan bahwa e-learning berbasis moodle versi ketiga sesuai dan dapat diterima dengan baik untuk diterapkan pada mata pelajaran Praktik Jaringan Komputer.
Bilayer Ventilated Labyrinthine Metasurfaces With High Sound Absorption and Tunable Bandwidth
Authors: Du Jiayuan , Luo Yuezhou , Zhao Xinyu , Sun Xiaodong , Song Yanan , Hu Xinhua 
Published: February 2021

Abstract
The recent advent of acoustic metamaterials offers unprecedented opportunities for sound controlling in various occasions, whereas it remains a challenge to attain broadband high sound absorption and free air flow simultaneously. Here, we demonstrated, both theoretically and experimentally, that this problem can be overcome by using a bilayer ventilated labyrinthine metasurface. By altering the spacing between two constituent single-layer metasurfaces and adopting asymmetric losses in them, near-perfect (98.6%) absorption is achieved at resonant frequency for sound waves incident from the front. The relative bandwidth of absorption peak can be tuned in a wide range (from 12% to 80%) byadjusting the open area ratio of the structure. For sound waves from the back, the bilayer metasurface still serves as a sound barrier with low transmission. Our results present a strategy to realize high sound absorption and free air flow simultaneously, and could find applications in building acoustics and noise remediation.
Global patterns of geo-ecological controls on the response of soil respiration to warming
Authors: Haaf David , Six Johan , Dötterl Sebastian 
Published: February 2021

Abstract
While soil respiration is known to be controlled by a large range of biotic and abiotic factors, its temperature sensitivity in global models is largely related to climate parameters. Here, we show that temperature sensitivity of soil respiration is primarily controlled by interacting soil properties and only secondarily by vegetation traits and plant growth conditions. Temperature was not identified as a primary driver for the response of soil respiration to warming. In contrast, the non-linearity and large spatial variability of identified controls stress the importance of the interplay among soil, vegetation and climate parameters in controlling warming responses. Global models might well predict current soil respiration, but not future rates because they neglect the controls exerted by soil development. Thus, to accurately predict the response of soil respiration to warming at the global scale, more observational studies across pedogenetically diverse soils are needed rather than focusing on the isolated effect of warming alone.
Phenylpropanoids from Liparis nervosa and their in vitro antioxidant and α-glucosidase inhibitory activities
Authors: liu liang , zou meijia , yin qimeng , zhang zhenyang , zhang xianwen 
Published: February 2021

Abstract
Eleven phenylpropanoids were isolated from the whole grass of Liparis nervosa, an orchidaceous medicinal plant. Their structures were elucidated as (+)-Syringaresinol (1), (-)-Syringaresinol-4-O-β-D-glucopyranoside (2), Sinapaldehyde (3), Coniferyl aldehyde (4), Syringin (5), Sinapaldehye glucoside (6), 2,3-dihydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone (7), C-Veratroylglycol (8), 7S, 7′S, 8R, 8′R-icariol A2 (9), Erigeside 2 (10), and Methylsyringin (11) by comparing the spectroscopic data and physicochemical constants from the isolated compounds with the data reported in the literature. Compounds 1 and 9 were found to have potent in vitro antioxidant activities in the DPPH and ABTS assays, and their IC50 values were lower than those of vitamin C. More importantly, compound 9 had a strong α-glucosidase inhibitory activity with an IC50 value of 43.76 ± 2.03 µM, which was much lower than that of acarbose (IC50 = 273.12 ± 11.84 µM), indicating that compound 9 has the potential for the development of hypoglycemic drugs. In conclusion, the present study suggests that phenylpropanoids may be the additional representative type of active constituents in L. nervosa, which provides a new line of evidence to understand this medicinal plant.
Description of Sandaracinobacter Hominis Sp. Nov., Isolated From Human Skin
Authors: Qu Ping-hua , Luo Hai-min , Feng Jun-hui , Dong Lei , Li Song , Ming Yu-zhen , Li Wen-jun , Lin Ying , chen cha 
Published: February 2021

Abstract
Strain SZY PN-1T, representing a novel Gram-negative, aerobic, non-motile, rod-shaped and yellow-pigmented bacterium, was isolated from a skin sample of a healthy Chinese people. Growth of SZY PN-1T optimally occurred at pH 7.0, at 30 ºC and tolerate up to 1.0 % (w/v) NaCl. According to the absorption spectrum, carotenoid was present in the cells. Comparative analysis of the 16S rRNA gene revealed that strain SZY PN-1T shared high similarities with Sandaracinobacter sibiricus RB16-17T (97.1 %) and Sandaracinobacter neustonicus JCM 30734T (96.6 %), respectively. Phylogenetic analysis of 16S rRNA gene sequences together with protein-concatamer tree showed that SZY PN-1T formed a separate branch within the genus Sandaracinobacter. The DNA G+C content of the strain SZY PN-1T was 65.0 % (genome). The polar lipid profile included phosphatidylethanolamine, phosphatidylglycerol, two sphingoglycolipids, diphosphatidylglycerol, five unidentified glycolipids and seven unidentified lipids. The predominant fatty acids (> 10.0 %) were identified as C18:1 ω7c and/or C18:1 ω6c, C17:1 ω6c, C16:1 ω7c and/or C16:1 ω6c. The major respiratory quinone was ubiquinone Q-10. Based on the phenotypic and genotypic features, we proposed Sandaracinobacter hominis sp. nov. with type strain SZY PN-1T (= KCTC 82150T = NBRC 114675T).
Communicating climate change findings from IPCC reports: Lessons from outreach events in India
Authors: Pathak Minal , Roy Joyashree , Patel Shaurya , Some Shreya , Vyas Purvi , Das Nandini , Shukla Priyadarshi 
Published: February 2021

Abstract
India has been collaboratively hosting public dissemination events to communicate climate change science and knowledge using Intergovernmental Panel on Climate Change (IPCC) reports since 2007. All three special reports from Sixth Assessment cycle have been presented in multiple outreach events in various states of India. The primary aim has been to satisfy the growing appetite among various social groups for reliable scientific understanding of climate change and the solution space. The study includes insights from 18 physical outreach events conducted in India. The format ranged from very large public events with mixed stakeholder presence in the audience with presence of national/subnational policy makers; workshops, meetings and seminars with implementing sectors and investors, financial institutions, NGOs and a third category with knowledge generators, researchers, teachers and students. The follow up mass media and social media coverage have been a positive spin off. The events provided platform for open discussion on bottom-up local good practices, very localised impacts and connection to climate systems and reasons for concern and action. Feedback received is rich and rewarding. Face to face outreach events have enormous co benefits and trust building scope as side talks, coffee time talks, small side meetings, casual clarifications all help in providing space to participants for dispelling doubts, build long term research collaborations and they become ambassadors and adopters of IPCC science. Overall, the events were hugely successful, however many more such events, especially in local languages are needed to ensure messages of the IPCC reach the wider stakeholders.
Formation of self-assembled hierarchical structure on Zn doped in CuO nanoparticle using a microwave-assisted chemical precipitation approach
Authors: E Bruno , M Haris , A Mohan , M. Senthilkumarb 
Published: February 2021

Abstract
In the present work, CuO and Cu1 − xZnxO were synthesized with the function of the Zn doping ratio by microwave-assisted chemical precipitation approach. The XRD pattern shows that the mono-phase CuO with a mono-clinical structure and no other secondary phase has been observed for the Cu1 − xZnxO with different Zn ratio and confirms CuO lattice does not get destroyed by the addition of Zn. The self-assembled hierarchical flower morphology was obtained for the higher doping ratio of Zn. The Energy Dispersive Analysis of X-ray spectrum confirms the presence of Zn in the CuO lattice and the stoichiometry obtained. The optical band gap was found to be 1.78 eV for CuO nanoparticles and the values are between 1.80 and 2.29 eV for Zn doped CuO. For higher Zn doped CuO, optical band splitting was observed due to flower-like morphology. The high recombination of an electron-hole was obtained for higher doping ratio nanoparticles. These properties are needed for Photocatalytic application.
Acute exposure to paraquat affects the phenotypic differentiation of substantia nigra microglia in rats
Authors: Zhang Wendi , Fan Xiaobei , Fan Zhuo , Wu Bailin , Wang Mengchao , Duan Wanyu , Song Bo 
Published: February 2021

Abstract
The toxicity of paraquat (PQ), a bipyridine cationic herbicide, to the lung and kidney has been widely recognized, but the acute toxic effects of PQ on the nervous system have received little attention. The aim of this study was to explore changes in the phenotypic differentiation of microglia in rats caused by acute PQ exposure. We found that acute PQ exposure induced pyknosis, edema and apoptosis in substantia nigra neurons. The results of immunohistochemistry and western blotting showed that the number of activated microglia increased, the number of microglia branches decreased and the length became shorter in the early stage of exposure to 25 mg/kg PQ. We then compared the mean fluorescence intensity of iNOS and ARG1. In the early stage of acute 25 mg/kg PQ exposure, the number of M1 phenotypes of microglia increased; in contrast, in the early stage of acute 45 mg/kg PQ exposure, the number of M2 phenotypes of microglia increased. On the 69th day, the expression of iNOS and ARG1 increased in the 25 mg/kg and 45 mg/kg PQ exposure groups. In sum, changes in microglia phenotypic differentiation were related to exposure dose and exposure time.
Study on the Initial Value Problem for Fractional-order Cubature Kalman Filters of Nonlinear Continuous-time Fractional-order Systems
Authors: Yang Chuang , Gao Zhe , Miao Yue , Kan Tao 
Published: February 2021

Abstract
To realize the state estimation of a nonlinear continuous-time fractional-order system, two types of fractional-order cubature Kalman filters (FOCKFs) designed to solve problem on the initial value influence. For the first type of cubature Kalman filter (CKF), the initial value of the estimated system are also regarded as the augmented state, the augmented state equation is constructed to obtain the CKF based on Grünwald-Letnikov difference. For the second type of CKF, the fractional-order hybrid extended-cubature Kalman filter (HECKF) is proposed to weaken the influence of initial value by the first-order Taylor expansion and the third-order spherical-radial rule. These two methods can effectively reduce the influence of initial value on the state estimation. Finally, the effectiveness of the proposed CKFs is verified by two simulation examples.
Effect of Epidemic Intermittent Fasting on Metabolic Syndrome: A Systematic Review and Meta-analysis of Randomized Controlled Trials
Authors: Yang Fan , Liu Can , Liu Xu , Pan Xiandu , Li Xinye , Tian Li , Sun Jiahao , Yang Shenjie , Zhao Ran , An Na , Yang Xinyu , Gao Yonghong , Xing Yanwei 
Published: February 2021

Abstract
Background and aims: Intermittent fasting (IF) has gained attention as a promising diet for weight loss and dysmetabolic diseases management. This systematic review aimed to investigate the effects of IF on metabolic syndrome (MetS). Methods: A systematic literature search was carried out using three electronic databases, namely PubMed, Embase, and the Cochrane Library, until October 2020. Randomized controlled trials that compared the IF intervention with a control group diet were included. Effect sizes were expressed as weighted mean difference (WMD) using a fixed-effects model and 95% confidence intervals (CI). Results: Forty-six studies were included. Compared to the ones within control groups, participants exposed to the IF intervention reduced their body weight (WMD, -1.78 kg; 95% CI, -2.21 to -1.35; p < 0.05), waist circumference (WMD, -1.19 cm; 95% CI, -1.8 to -0.57; p < 0.05), fat mass (WMD, -1.26 kg; 95% CI, -1.57 to -0.95; p < 0.05), body mass index (WMD, -0.58 kg/m2; 95% CI, -0.8 to -0.37; p < 0.05), systolic blood pressure (WMD, -2.14 mmHg; 95% CI: -3.54 to -0.73; p < 0.05), diastolic blood pressure (WMD: -1.38 mmHg, 95% CI, -2.35 to -0.41, p < 0.05), fasting blood glucose (WMD, -0.96 mg/dL; 95% CI, -1.89 to -0.03; p < 0.05), fasting insulin (WMD, -0.8 μU/mL; 95% CI, -1.15 to -0.44; p < 0.05), insulin resistance (WMD, -0.21; 95% CI, -0.36 to -0.05; p < 0.05), total cholesterol (WMD, -3.75 mg/dL; 95% CI, -6.64 to -0.85; p < 0.05), triglycerides (WMD, -7.54 mg/dL; 95% CI, -11.45 to -3.63; p < 0.05). No effects were observed for low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, or glycosylated hemoglobin. Conclusions: This meta-analysis supports IF’s role in the improvement of MetS, compared to a control group diet. Further research on IF interventions should take into account long-term and well-designed administration to draw definitive conclusions.
Population density modulates insect progenitive plasticity through the regulation of dopamine biosynthesis
Authors: Liu Kai , Yuan Longyu , Yue Lei , Chen Weiwen , Kang Kui , Lv Jun , Zhang Wenqing , Pang Rui 
Published: February 2021

Abstract
Insect fecundity is a quantitative phenotype strongly affected by genotypes and the environment. However, the interaction between genotypes and the environment factors in modulating the insect fecundity remains largely unknown. In this study, we investigated the density-dependent population dynamics in the brown planthopper (BPH), Nilaparvata lugens , by using two populations respectively carrying homozygous high-fecundity (HFG) and low-fecundity (LFG) genotypes. Under low population densities, the fecundity and population growth rate of the two genotypes showed increasing trends across generations, while the trends between HFG and LFG under high population densities were opposite. RNA-seq was applied to unveil the key factors for these density-dependent progenitive phenotypes. Combined with the temporal analysis and weighted gene co-expression network analysis, we identified two gene modules that simultaneously enriched in four pathways related to the neural system. Among these pathways, the gene Nlpale encoding a tyrosine hydroxylase was identified as the key gene. The RNA interference of this gene and manipulation of its downstream product dopamine could significantly impact the basic and density-dependent progenitive phenotypes of BPH. This study shows that the dopamine biosynthesis is the key regulatory factor for the determination of fecundity in response to density changes in different genotypes of BPH , which gives an insight into the interaction of a typical environmental factor and insect genotype during the process of population regulation.
The system for adaptive control of axial tool oscillations in vibratory drilling: description and experimental study
Authors: Ivanov Ilya , Voronov Sergey A. , Kiselev Igor A. 
Published: February 2021

Abstract

Reliable segmentation and evacuation of chips from the cutting zone are essential for effective deep hole drilling. Drilling with low-frequency axial vibrations ensures these useful effects because cutting edges periodically leave the cutting zone. Useful tool vibrations can be maintained by using a special self-vibratory drilling head. The drilling head has an elastic element and ensures the self-excitation of vibrations due to the regenerative effect. However, high damping in the cutting zone suppresses axial self-vibrations and renders such a drilling head inexpedient for the industry. In this study, a novel system of adaptive control of the vibration drilling process was developed. The control objective is to maintain a specified peak-to-peak (PTP) value of vibration displacements. Due to in-process adaptation of the feedback gain, the control system supplies additional energy if vibrations are not self-excited and removes energy if the PTP vibration displacements are greater than the specified value. To test the workability of the system, an experimental setup was made. In the setup, the actuator force acts on an elastically fixed workpiece. The dynamic properties of the setup are equivalent to those of the vibration drilling head. The algorithm of feedback gain adaptation was implemented with a microcontroller. A number of experiments for different drilling regimes revealed that the control system successfully maintains the specified PTP value of displacements. The developed control system can be implemented on a vibration drilling head because only an accelerometer is required for control and the required actuator force is under 100 N.
Sensor Based Leakage Detection in Vacuum Bagging
Authors: Haschenburger Anja , Menke Niklas , Stüve Jan 
Published: February 2021

Abstract
The majority of aircraft components are nowadays manufactured using autoclave processing. Essential for the quality of the component is the realization of an air tight vacuum bag on top of the component to be cured. Several ways of leakage detection methods are actually used in industrial processes. They will be dealt with in this paper. A special focus is put on a new approach using flow meters for monitoring the air flow during evacuation and curing. This approach has been successfully validated in different trials, which are presented and discussed. The main benefit of the method is that in case of a leakage, a defined limit is exceeded by the volumetric flow rate whose magnitude can be directly correlated to the leakage’s size and position. In addition the potential of this method for the localization of leakages has been investigated and is discussed.