bluuebunny/crossref_metadata_2025_split huggingface dataset:
VALIDITAS BUTIR SOAL PENILAIAN AKHIR SEMESTER (PAS) KELAS VIII UNTUK MATA PELAJARAN ILMU PENGETAHUAN ALAM
Authors: Damayanti Savira Amalia , Efendi Nur , Sartika Septi Budi 
Published: June 2022

This study aims to analyze the validity of the experts and constructs of the items in the Final Semester Assessment (PAS) based on the validity of the items. Descriptive quantitative research method, namely the study of documentation. The subjects in this study were teachers and students. The documentation used is the PAS question lattice document and the PAS answer document from the students. The data analysis technique used descriptive quantitative, namely analyzing the PAS item grid made by the teach-er and analyzing the students' PAS answers using the TAP 2.0 application. The results of this study, namely, based on the validity of experts / experts seen from the aspect of material, construction and lan-guage are in the good category. Based on construct validity on the aspect of difficulty level, discriminat-ing power, effectiveness of deception, reliability and validity of the Final Semester Assessment (PAS) questions at SMP Muhammadiyah 8 Tanggulangin included in the category of questions that can be used as many as 4 questions, namely in question numbers 4,12,18 and 25. There are 8 questions in the revised category, namely the number 1,2,3,5,6,11,19 and 13 questions cannot be used, namely the ques-tion number 7,8,9,10,13,14,15,16 ,17,20,22,23,24.Keywords: Expert validity, item analysis, TAP application program. ABSTRAKPenelitian ini memiliki tujuan untuk menguji validitas pakar/ahli dan dari butir soal pada Penilaian Akhir Semester (PAS) berdasarkan validitas butir soal. Metode penelitian kuantitatif deskriptif, yaitu studi dokumentasi. Subjek pada penelitian ini adalah guru dan siswa. Dokumentasi yang digunakan yaitu dokumen kisi-kisi soal PAS dan dokumen jawaban PAS dari siswa. Teknik analisis data menggunakan kuantitatif deskriptif, yaitu menganalisis kisi-kisi butir soal PAS yang dibuat oleh guru dan menganalisis jawaban PAS siswa menggunakan aplikasi TAP 2.0. Hasil penelitian ini yaitu, berdasarkan hasil uji kevalidan oleh pakar/ahli dilihat dari aspek materi, isi dan bahasa masuk dalam kategori baik. Berdasarkan hasil uji pada aspek tingkat kesukaran, daya pembeda, efektifitas pngecoh, reliabilitas dan validitas soal Penilaian Akhir Semester (PAS) di SMP Muhammadiyah 8 Tanggulangin masuk dalam kategori soal dapat digunakan sebanyak 4 soal yaitu pada nomor soal 4,12,18 dan 25. Soal dalam kategori direvisi sebanyak 8 soal yaitu pada nomor soal 1,2,3,5,6,11,19 dan tidak dapat digunakan sebanyak 13 soal yaitu pada nomor soal 7,8,9,10,13,14,15,16,17,20,22,23,24.Kata kunci: Analisis butir soal, program aplikasi TAP, validitas ahli.
MENGEMBANGKAN RASA PERCAYA DIRI MELALUI MODEL DIRECT INSTRUCTION, METODE ROLE PLAYING BERBASIS CERITA DAERAH
Authors: Nurleni Siti , Anggreani Chresty 
Published: June 2022

Penelitian ini bertujuan untuk mengembangkan rasa percaya diri anak melalui metode role playing berbasis cerita daerah. Penelitian ini menggunakan jenis penelitian tindakan kelas yang terdiri dari dua siklus. Subjek penelitian ini terdiri dari 6 orang anak. Alat pengumpulan data yang digunakan seperti lembar observasi, wawancara, dan dokumentasi. Teknik analisa data yang digunakan menggunakan teknis analisa deskriptif. Hasil penelitian menunjukan peningkatan rasa percaya diri anak secara klasikal pada siklus 1 sebesar 50% dengan kategori mulai berkembang, meningkat pada siklus 2 sebesar 83% dengan kategori berkembang sangat baik. Peningkatan rasa percaya diri anak pada siklus 1 ke siklus 2 sebesar 33%. Pelaksanaan penelitian ini sudah mencapai kreriteria yang telah ditetapkan yaitu ≥75%. Dengan demikian, dapat disimpulkan bahwa dengan menggunakan metode role playing berbasis cerita daerah dapat mengembangkan rasa percaya diri anak kelompok B TK Penerus Bangsa PGRI Banjarmasin.
SHIPPING OIL FUEL BY GROUP PELANGSIR AS A COMMUNITY LIVELIHOOD MUARA TEWEH
Authors: Rionaldy Edwin 
Published: June 2022

The rise of slashing as an alternative to profitable work is carried out by the middle to lower class people of Muara Teweh. Passing is done because of the lack of job opportunities so that the community is a source of livelihood. This work for some people in Muara Teweh is only used as a side job because the income from the main job is not enough to meet their daily needs, the purpose of this study is to describe the actions of the BBM slasher, to describe the function of the BBM slasher community group, to analyze the consequences received or experienced by the slasher with the presence of slimming activity. The method used in this research is a qualitative method. Data source selected by purposive sampling. The data collection was carried out by the technique of observation, interview and documentation. Technical data analysis using qualitative analysis with data reduction steps, data presentation and drawing conclusions, shunts The results of the study illustrate the prevalence of be used as a side job, take advantage of living conditions, provide a lot of profit and little capital, the function of the curator group is of two kinds, namely the function of the group for individuals as a means of establish social relations and group functions for the community as social control, the positive impact is for people who are far away facilitate the distribution of fuel to villages, create new job opportunities The negative impact is for the shunters themselves, such as competition between fellow pangsirs, conflicts among shunters and the general public who are currently experiencing queuing for fuel at gas stations, raiding smugglers' losses, paying fines, and confiscation of goods.
Estudio in vitro del efecto de tres solventes comerciales sobre conos de gutapercha utilizados para técnica en frío y termoplastificada
Authors: Saavedra Gonzales Paul Josep , Cabrera Iberico Miguel Angel 
Published: June 2022

El objetivo de esta investigación fue comparar la acción solvente del óleo de naranja, eucaliptol y óleo experimental de hierba luisa sobre conos de gutapercha para técnica en frío y técnica termoplastificada. Metodología: La muestra estuvo compuesta por 80 conos de gutapercha n.o 80 Endomedic y F3 ProTaper Universal. Los conos se dividieron en 4 grupos (n = 20) según el tipo de solvente y, a la vez, cada uno se dividió en dos subgrupos (n = 10) según el tiempo de exposición (5 min y 10 min). Los conos se sumergieron en el solvente respectivo durante 5 o 10 minutos. Luego, se lavaron con 5 ml de alcohol durante 5 minutos y se enjuagaron con agua. Finalmente, luego de secar a temperatura ambiente por una hora, la acción solvente se registró en gramos (g) de pérdida de peso. Los resultados fueron analizados y comparados mediante la prueba de Tukey (p < 0,05). Resultados: El cono Endomedic expuesto durante 5 min a eucaliptol obtuvo el promedio de peso más bajo (0,0625 ± 0,0009 g), seguido del óleo de hierba luisa (0,0629 ± 0,0003 g) y óleo de naranja (0,0629 ± 0,0010 g), aunque no se encontró diferencia significativa (p > 0,05) entre cada uno. Conclusión: El solvente experimental de hierba luisa, el eucaliptol y el óleo de naranja presentaron un efecto solvente similar sobre los conos de gutarpercha para técnica en frío y termoplastificada. A nivel clínico los tres solventes estudiados podrían usarse en el retratamiento endodóntico como soluciones alternativas de similar efecto solvente.
Análisis del sellado radicular utilizando azul de metileno en distintas técnicas de obturación endodóntica. Revisión de la literatura
Authors: Machaca Albino Betty , Villavicencio-Caparó Ebingen , Pacheco Ramírez Luis Armando , Miranda Miranda Carla 
Published: June 2022

Uno de los mayores inconvenientes en la obturación endodóntica es el problema del sellado radicular insuficiente, debido a la microfiltración de bacterias hacia el conducto. El objetivo de la investigación fue realizar una revisión narrativa de las características del empleo del azul de metileno como evaluador de microfiltraciones en estudios que compararon la calidad del sellado radicular con distintas técnicas de obturación endodóntica. El método de investigación empleado fue de revisión de la literatura. El azul de metileno fue utilizado en estudios experimentales in vitro, los cuales compararon técnicas de obturación como la condensación lateral, gutapercha inyectable en frío, termomecánica, entre otras. Las piezas dentarias selladas se sumergieron en un tinte de azul de metileno de 1% al 5% de concentración. Este procedimiento permitió reevaluar las muestras en distintos periodos de tiempo. En conclusión, para realizar pruebas de penetración de empastes endodónticos, el azul de metileno es una opción fácil de emplear además de confiable.
The effects of a three-day mountain bike cycling race on the autonomic nervous system (ANS) and heart rate variability in amateur cyclists: a prospective quantitative research design
Authors: Swart Anton 
Published: June 2022

Abstract
Background
Increased endurance exercise may cause an acute reduction in cardiac function, causing a physiological cascade. Heart rate variability (HRV) is a physiological measurement used to evaluate the autonomic nervous system (ANS) state. This study set out to determine the changes in the ANS by participating in a three-day mountain bike cycling event using HRV as an outcome measure.
Methods
Sixteen healthy participants (male and female) participating in a three-day mountain bike cycling event underwent five-minute resting electrocardiography (ECG) recordings in a supine position. In addition, heart rate variability measurements were recorded two days before the race (baseline testing), after each race day, and 24-hours post-event (recovery).
Results
Time-domain and frequency domain measures showed significant changes from baseline HRV parameters after each race day (p ≤ 0.05). In addition, our data revealed that the mean heart rate (HR) and R-R variability intervals did not return to baseline values after 24-hours of recovery. Thus, reflecting autonomic nervous system (ANS) dysfunction due to increased sympathetic activity and parasympathetic withdrawal.
Conclusions
The main strength of this study is using HRV as a measuring and screening tool to assess cardiac autonomic activity, whereby the state of the ANS before and after endurance events can be measured. Thus, physicians, athletes, and coaches can assess the stress of endurance events on the ANS and plan for correct recovery strategies. The reasoning is that if the ANS is in a state of dysfunction, susceptible amateur athletes might be at risk for a cardiovascular event.
Optimization of Handovers in Small Cell Networks using Soft Computing
Authors: Kumari Savita 
Published: June 2022

Abstract
A handover optimization technique based on strength of signal, user’s speed, and data type has been proposed in this paper. We have introduced a Particle Swarm Optimization (PSO) technique and Particle Swarm Optimization with Passive Congregation (PSOPC) technique to optimize the handovers of base stations. Simulation results elucidate that the proposed optimization technique precisely lessen the handovers.
Differences in bacterial taxa between treatment-naive MDD patients and controls may be related to a proinflammatory profile
Authors: Sørensen Suzette , Knudsen Julie , Bundgaard-Nielsen Caspar , Leutscher Peter , Hjerrild Simon , Nielsen René Ernst 
Published: June 2022

Abstract
Introduction:
Major depressive disorder (MDD) is characterized by depressed mood and anhedonia, but also physical symptoms such as changes in appetite and weight. The gut microbiota has recently been postulated to be involved in MDD through gut-brain axis signaling. Moreover, antidepressants contain antibacterial properties in the gastrointestinal tract. The aim of this study was to compare the gut microbiota and inflammatory profile of patients with MDD before and after initiation of pharmacological and/or cognitive antidepressant treatment in comparison with non-depressed individuals (nonMDD).
Methods
Study participants delivered fecal and blood samples at baseline and at follow-up after four and twelve weeks, respectively. Patients started treatment immediately after the delivery of the baseline samples. The gut microbiota was characterized by 16S rRNA gene sequencing targeting the hypervariable V4 region. Inflammation was assessed based on plasma levels of 54 immune markers using Meso Scale.
Results
In total, 27 patients and 32 nonMDD controls were included in the study. The gut microbiota in the baseline samples of MDD versus nonMDD participants did not differ regarding α- or β-diversity. However, there was a higher relative abundance of the genera Ruminococcus and Intestinibacter and a lower relative abundance of the genera Lactobacillus, Bilophila, Coprobacter, and Desulfovibrio in the MDD group compared to the nonMDD group. In the MDD group, the families Ruminococcaceae, Clostridiaceae and Peptostreptococcaceae were found depleted after twelve weeks follow-up compared to the baseline samples. In the MDD group, IL-7, IL-8 and IL-17b were elevated compared to the nonMDD group.
Conclusion
Intestinal bacteria Ruminococcus, Coprobacter and Lactobacillus were significantly different between antidepressant-naïve patients with MDD and nonMDD controls. Genera belonging to Ruminococcaceae also changed in relative abundance in patients with MDD during pharmacological and/or cognitive antidepressant treatment. The MDD group was found to have a pro-inflammatory profile compared to the nonMDD group.
Chamber roof deformation prediction and analysis of underground mining using experimental design methodologies
Authors: Zhang Zongguo , qiu xianyang , Shi Xiuzhi , Yu Zhi 
Published: June 2022

Abstract
The deformation prediction of the chamber roof is crucial in underground mining. Combined with Flac3D numerical simulation, the experimental design methodologies, including single-factor test (SFT), Plackett-Burman design (PBD), steepest ascent design (SAD), and response surface methodology (RSM), were used to evaluate the effect of multiple variables on the chamber roof deformation. Firstly, eight factors that affected the vertical displacement (Ds) of the chamber roof were selected, and the sensitive interval of every factor was obtained through SFT. Then, four factors that significantly affect the results were screened by PBD: cohesion (Co), stope length (Ls), stope width (Ws), and internal friction angle (fr). 29 groups of response surface schemes with 4 factors and 3 levels satisfying the Box-Behnken design (BBD) were simulated. Through the result analysis of variance (ANOVA) and sensitivity, the influence order of each factor on Ds can be determined: Ws >Ls >fr > Co>interaction between Co and fr > interaction between Ls and Ws. Finally, using the prediction model, the roof deformation of 0#N stope of a lead-zinc mine was predicted and the error was analyzed. The relative errors between the prediction value and the numerical simulation value, the measured value are 0.7% and 4.3%, respectively, which indicates that the prediction model is reasonable and has a certain reference value for mine safety.
A new algorithm of distance protection based on the change in phase angle of the voltage
Authors: Ostojić Mladen M. , Stojanović Zoran N 
Published: June 2022

Abstract
The paper presents a new algorithm of distance protection based on the change in phase angle of the voltage. As input signals, the algorithm uses measured voltages at the beginning of the line and auxiliary voltages. Auxiliary voltages were calculated using measured currents and voltages at the beginning of the line and known line parameters. The algorithm compares the instantaneous values of the measured and calculated auxiliary voltages and, based on the change in the phase angle of the voltage, detects a fault on the line. The testing of the presented algorithm was performed with signals obtained by computer simulations of line faults and recordings of faults taken from protective devices from the real network. The obtained results showed good performance of the presented algorithm.
Constructing and validating a Job Strain Index based on five nationwide Norway Surveys of Living Conditions in the Work Environment
Authors: Le Giang Huong , Hermansen Åsmund , Dahl Espen 
Published: June 2022

Abstract
Background: It has been claimed that Nordic register data are a “goldmine” for research. However, one limitation is the lack of information on working conditions. Job exposure matrices (JEMs) are one solution to this problem. Thus, the twin aim of this study was (i) to investigate the reliability of an occupation-based psychosocial JEM, i.e., a composite Job Strain Index (job strain or JSI abbreviated), and (ii) to examine the construct and criterion-related validity of this measure of job strain. Method: The study utilized five waves of the nationwide Norway Survey of Living Conditions in the Work Environment with a total sample of 43,977 individuals and register data with a total sample of 1,589,535 individuals. Job strain was composed of items belonging to the two dimensions of Karasek’s DC model, job demands and job control (1979). The reliability of the JSI and its dimensions and components were investigated by measuring the degree of agreement (Cohen’s kappa), sensitivity, specificity, and internal consistency (Cronbach’s alpha). Construct validity was assessed by confirmatory factor analysis, and criterion-related validity was measured by concurrent validity and predictive validity. The selected concurrent criteria were self-reported survey information on long-term sick absence, anxiety, depression, and sleeping difficulty. The predictive criteria were register information on receipt of disability benefits, mortality, and long-term sick leave. Results: Agreement between individual and occupation-based job strain and components was fair to poor. The sensitivity and specificity of occupation-based job strain and its components varied from acceptable to low. The consistency of the items comprising job demand and job control was clearly acceptable. Regarding concurrent validity, significant associations between (both individual and occupational) job strain, and long-term sick leave and sleeping difficulty were observed for both genders. Occupation-based job strain indicated an elevated risk for anxiety and depression among men, but not among women. As for predictive reliability, significant associations between occupation-based job strain and all three health outcomes were observed for both men and women. Conclusion: Our occupation-based JSI serves as a reliable and valid indicator of psychosocial job exposure that can be used in analyses of Norwegian register data where individual information on such conditions is missing.
Effects of long-term Tobramycin Inhalation Solution (TIS) once daily on exacerbation rate in patients with non-cystic fibrosis bronchiectasis
Authors: Terpstra L.C. , Altenburg J. , Bronsveld I. , de Kruif M.D , Berk Y. , Snijders D. , Rozemeijer W. , Heijerman H.G.M. , Boersma W.G. 
Published: June 2022

Abstract
Background: Use of long-term tobramycin inhalation solution (TIS) has been shown beneficial in cystic fibrosis (CF) and earlier findings also suggest a benefit in non-CF bronchiectasis. We investigated the efficacy and safety of maintenance TIS once daily (OD) in frequent exacerbating bronchiectasis patients chronically infected by different pathogens sensitive for tobramycin.Objective: The primary outcome was the frequency of exacerbations during the 12-month study period. Secondary outcomes were time to first exacerbation, change in lung function and quality of life (QoL), bacterial analysis and safety.Materials/patients: In this multicenter RCT patients aged ≥ 18-year-old were included with confirmed bronchiectasis and ≥ 2 exacerbations in the preceding year. Patients were assigned (1:1) to receive TIS or placebo OD for 1-year.Results: 58 patients were included of which 52 were analyzed in the mITT analysis. TIS reduced exacerbation frequency with a RR of 0.74 (0.49-1.14) (p=0.15). Within the TIS population a significant decrease in number of exacerbations was found (2; p=0.00), which was also seen in the placebo-treated patients (1.5; p=0.00). In the TIS-treated patients the QoL significantly improved (LRTI-VAS p=0.02 Leicester Cough p=0.02) without additional safety concerns. No significant differences were found for the other secondary outcomes.Conclusion: Although the predefined 50% reduction in number of exacerbations was not observed, long-term TIS OD is a safe and effective treatment modality in patients with bronchiectasis chronically infected by tobramycin sensitive pathogens. This could be a useful strategy in selected patients with bronchiectasis suffering from a high burden of disease.The BATTLE study was registered at Clinical trials.gov number: NCT02657473. Date: 13 aug 2016
A taxonomy of policy questions: Examining the style of policy inquires
Authors: Osman Magda , Cosstick Nick 
Published: June 2022

Abstract
To help advance exchanges between science and policy, a useful first step is to examine the questions which policy professionals pose to scientists. The style of a question indicates what the asker is motivated to know, and how they might use that knowledge. Therefore, the aggregate pattern of typical policy inquires can help scientists anticipate what types of information policy audiences desire. A dataset (n = 2972) of questions from policy professionals collected over 10 years (2011–2021)––by the Centre for Science and Policy at the University of Cambridge––was classified into one of seven classes. In the main, the most popular questions posed by policy professionals––within the public and private sectors––were those whose answers inform how to achieve specific outcomes––whether directly, or by providing a causal analysis which is instrumental to this process. Moreover, this seems to be a general aspect of the nature of policy professionals’ inquiries, given that it is preserved regardless of the policy issue considered (e.g., Artificial intelligence, Economy, or Health). Thus, maximizing the usefulness of the information that policy professionals receive when engaging with scientists requires informing how to achieve specific outcomes––directly, or by providing a useful causal analysis.
Study on optimization of transmission system of plastic centrifugal pump
Authors: Zhang Lili , Wang Youmin , Wen Qingzhao , Luo Wenbin 
Published: June 2022

Abstract
Because of the influence of the structural parameters of the pump shaft transmission system on the dynamic and static performance of the plastic centrifugal pump, according to the structural parameters of the centrifugal pump, the three-dimensional model of the impeller and volute chamber was drawn. The composition of radial force and axial force generated when the plastic centrifugal pump works were analyzed. The CFD calculation of the load of the plastic centrifugal pump was carried out. The flow field of the plastic centrifugal pump under ideal working conditions was simulated by ANSYS FLUENT. Combined with the application principle of singular function in mechanics, the mathematical model of the deflection of the pump shaft transmission system was constructed. And the key factors affecting the deflection of the pump shaft were analyzed. Taking the minimum deflection and the maximum critical speed of the first order as the objective function, the constraint conditions were determined by the geometric relationship, and the optimization model of the structural parameters of the pump transmission system was established. The NSGA-II multi-objective optimization method was used to solve the optimal structural parameters of the optimization model, and the optimization design of pump shaft span, cantilever, front and rear bearing clearance was completed. The optimal span cantilever ratio of the rotor model of the single-span cantilever structure was 1:0.75. The ZT-3 rotor test device was used as a platform to verify the effect of span and cantilever ratio on the dynamic performance of the rotor.