bluuebunny/crossref_metadata_2025_split huggingface dataset:
Work-Related Stress and Teaching Performance of Teachers in Selected School in the Philippines
Authors: SARABIA AURORA , COLLANTES LEILA M. 
Published: February 2022

This study determined the predictor of teaching performance among the components of work-related stress to 210 selected elementary and secondary public teachers in Angeles City. It described the participants’ socio-demographic characteristics, level of work-related stress, and teaching performance, and likewise compared the work-related stress of the participants. The research design used was a descriptive-correlational design with various statistical tools such as descriptive statistics, independent T-Test, and multiple linear regressions. The study revealed that selected elementary and secondary teachers of Angeles City had a moderate work-related stress with the subcomponent demand as highly contributory to the stress. Gender and position were positive predictors of teaching performance where female and teachers with higher teaching position tended to have a higher teaching performance. On the other hand, seminars attended relative to stress and demand which is a sub-component of work-related stress are the negative significant predictors of teaching performance. This implies that teachers who attended seminars related to stress management had higher teaching performance compared to those who did not. This result also established that the higher level of demand, which is a sub-component of stress, can result in lower teaching performance.
Application of the detailed balance model to thermoradiative cells based on a p-type two-dimensional indium selenide semiconductor
Authors: Hanna Muhammad Yusrul , Nugraha Ahmad Ridwan Tresna , Majidi Muhammad Aziz 
Published: February 2022

Thermoradiative (TR) cells are energy conversion devices that convert low-temperature waste heat to electricity. TR cells work on the same principles as photovoltaics, but they produce a reverse bias voltage due to higher cell temperature than the environment temperature. Depending on the energy gap of the material, temperature difference would generate electrical energy by electron-hole pair recombination. In this work, we propose a two-dimensional (2D) InSe for applications in the TR cells. The electronic properties of 2D InSe are obtained by using first-principles calculations. Then, the calculated energy gap is used to estimate output power density and efficiency according to the Shockley-Queisser framework through a detailed balance model adapted with the TR cells. Using a heat source at = 1000 K and the ambient temperature = 300 K, an ideal TR cell of 2D InSe at the maximum power point can achieve output power density and efficiency up to 0.061 W/m2 and 4.41%, respectively, with an energy gap of 1.43 eV. However, sub-bandgap and non-radiative losses will degenerate the cell's performance significantly.
Positive Psychology in Neurodiversity: An Evaluation of Character Strengths and Humour-based Intervention for Wellbeing and Depression in Autistic Adults
Authors: Nocon Alicja Sabina , PhD Amanda Roestorf, , Menéndez Luz María Gutiérrez 
Published: February 2022

Background
The positive psychology and neurodiversity movements both aim to promote
and improve wellbeing through strengths-based approaches. However,
little is known about how positive psychology can support the wellbeing
of autistic people. The present used character strengths profiles and
a humour-based positive psychology exercise as potential tools to
improve the life satisfaction and mental health of autistic adults. To
our knowledge, this is first study to use these methods as possible ways
of improving the wellbeing of autistic adults in the community in the
UK.

Method
Forty-seven autistic adults completed self-rated standardised
questionnaires about their character strengths, life satisfaction,
happiness and depressive symptoms. Additionally, 22 participants from
this group completed the three funny things exercise for one
week, and follow-up questionnaires about happiness and depressive
symptoms.

Results
Character strengths most frequently reported by autistic adults were
Honesty, Appreciation of Beauty and Excellence, Love of Learning,
Fairness and Kindness. Higher levels of life satisfaction were
associated with character strengths of Hope, Honesty, Gratitude,
Forgiveness and Zest (Vitality). Participants reported fewer
depressive symptoms and similar levels of happiness after completing the
three funny things exercise.

Conclusions
The most frequent character strengths were consistent with autistic
traits reported in the wider body of autism literature, such as intense
interests and strong attention to detail. The present study provides,
for the first time, evidence for strengths- and humour-based
interventions that can effectively be used in a community setting to
promote positive wellbeing outcomes in autistic adults.
Anti-Müllerian Hormone Levels as Predictor of In Vitro Fertilization Outcomes
Authors: Maidarti Mila , Garinasih Prini Diandara , Siregar Aprilia Asthasari , Pratama Gita , Harzif Achmad Kemal , Sumapraja Kanadi , Wiweko Budi 
Published: February 2022

A decrease in serum anti-müllerian hormone (AMH) concentration suggests the reduction of antral follicle number. AMH serum level was correlated with ovarian stimulation outcomes, oocyte quantity and quality, embryo quality and in vitro fertilization (IVF) outcomes. However, the use of AMH to predict pregnancy rates in IVF is still debatable. This study aimed to determine the role of AMH in predicting ovarian response and pregnancy rates in IVF programs. This was a retrospective cohort study involving patients who underwent a short protocol of ovarian stimulation for IVF at the Yasmin clinic, dr Cipto Mangunkusumo General Hospital. from March 2013 to March 2021. A total of 1,527 out of 3,880 IVF cycles were included. Poor ovarian response was determined as a collection of fewer than four oocytes following ovarian stimulation. The data was then analyzed using the Mann Whitney test if the data distribution was not normal or the unpaired t-test if the data distribution was normal. Median AMH levels were higher in the normal (2.5(0.01-32)) compared to poor responder (0.68(0.01-6.86)) group (p<0.05; Mann Whitney). Serum AMH level and age had predictive value for pregnancy rate (p<0.05; Mann Whitney).
Keywords: AMH, ovarian response, pregnancy rate, IVF.

Kadar Hormon Anti-Müllerian sebagai Prediktor Luaran Fertilisasi in Vitro
Abstrak
Penurunan konsentrasi serum hormon anti-müllerian (HAM) menunjukkan penurunan jumlah folikel antral. HAM serum berkorelasi dengan luaran stimulasi ovarium kuantitas dan kualitas oosit serta kualitas embrio dan luaran fertilisasi in vitro (FIV). Namun, penggunaan HAM untuk memprediksi angka kehamilan dengan stimulasi ovarium pada FIV masih diperdebatkan. Tujuan penelitian ini untuk mengetahui peran serum HAM dalam memprediksi respons ovarium dan laju kehamilan pada program FIV. Penelitian ini adalah studi kohort retrospektif yang melibatkan pasien yang menjalani protokol singkat stimulasi ovarium pada program FIV di klinik Yasmin rumah sakit dr Cipto Mangunkusumo.dari bulan Maret 2013 sampai Maret 2021. Sebanyak 1.527 dari 3880 siklus IVF dimasukkan ke dalam penelitian. Dikatakan perespon buruk apabila diperoleh kurang dari empat oosit setelah stimulasi ovarium. Data kemudian dianalisis dengan menggunakan uji Mann Whitney bila sebaran data tidak normal atau uji t tidak berpasangan bila sebaran data normal. Median kadar HAM lebih tinggi pada kelompok perespons baik (2.5 (0.01-32)) dibandingkan perespons buruk (0.68 (0.01-6.86)) (p<0,05; Mann Whitney). Kadar HAM serum dan usia memiliki nilai prediktif terhadap angka kehamilan (p<0,05; Mann Whitney).
Kata kunci: hormon anti-Müllerian, respons ovarium, angka kehamilan, FIV.
Penerapan Scientific Approach Dalam Group Investigation Untuk Meningkatkan Keterampilan Berpikir Kritis Siswa Sekolah Dasar
Authors: Sunaryati Titin , Rizqa Herianingtyas Nur Luthfi 
Published: February 2022

Penerapan scientific approach dalam group investigation untuk meningkatkan keterampilan berpikir kritis siswa kelas IV SD Ploso I. Tujuan penelitian ini yaitu untuk meningkatkan keterampilan berpikir kritis ssiwa melalui penerapan scientific approach dalam group investigation. Penelitian ini merupakan penelitian tindakna kelas menggunakan desain model Kemmis & Taggart. Subjek penelitian adalah siswa kelas IV berjumlah 35 siswa. Teknik pengumpulan data yang digunakan adalah observasi, tes, dan dokumentasi. Data yang terkumpul dianalisis dengan teknik deskriptif komparatif. Pembelajaran dilaksanakan dengan langkah-langkah: (1) Goals, (2) Motivation, (3) Planning Activities; (4) Materials; (5) Group Activities; (6) Closure; (7) Appraisal and Feedback; and (8) Reflection. Hasil penelitian menunjukan bahwa penerapan scientific approach dalam group investigation dapat meningkatkan keterampilan berpikir kritis siswa dalam pembelajaran IPA. Diketahui Presentase keterampilan berpikir kritis siswa mengalami peningkatan pada setiap pertemuannya. Pada siklus I skor rata – rata 23,4 dengan presentase 68,57% berada dalam kategori Cukup. Kemudian mengalami peningkatan pada siklus II yaitu mencapai 29,5 dengan presentase ketercapaian 85,71% dalam kategori Amat Baik. Pada siklus III terus mengalami peningkatan menjadi 32,5 atau 91,42% dalam kategori Amat Baik. Dari hasil tes tersebut diketahui bahwa keterampilan berpikir kritis siswa mengalami peningkatan dan telah mencapai target yang diinginkan yaitu ≥80%.
Penerapan Model Problem Based Learning (PBL) Berbantukan Program Adobe Flash Terhadap Kemampuan Siswa Memecahkan Masalah Materi Getaran Dan Gelombang
Authors: Riswanto Riswanto , Fatmawati Sri 
Published: February 2022

Penelitian ini bertujuan untuk mendeskripsikan kemampuan siswa dalam memecahkan masalah, hasil belajar siswa, dan aktivitas siswa setelah dilaksanakan model Problem Based Learning (PBL) berbantukan Program Adobe flash pada Materi Pokok getaran dan gelombang. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kuantitatif. Instrumen yang digunakan adalah tes kemampuan memecahkan masalah, tes hasil belajar kognitif siswa, lembar pengamatan aktivitas siswa. Populasi penelitian adalah kelas VIII semester 2 MTs Islamiyah Palangka Raya, sampel penelitian adalah kelas VIII-D berjumlah 21 orang. Berdasarkan analisis hasil tes kemampuan siswa dalam memecahkan masalah didapatkan nilai rata-rata pretest 18,42 dan nilai rata-rata posttest sebesar 53,79. Berdasarkan analisis gain dan N-gain menunjukkan bahwa kemampuan siswa dalam memecahkan masalah mengalami peningkatan setelah dilaksanakan model Problem Based Learning (PBL) berbantukan Program Adobe flash didapatkan nilai sebesar 0,43 dengan kategori sedang. Berdasarkan analisis tes hasil belajar kognitif siswa didapatkan nilai rata-rata pretest 39,12 dan nilai rata-rata posttest sebesar 78,57. Berdasarkan analisis menggunakan rumus ketuntasan belajar secara individual dan klasikal didapatkan ketuntasan siswa secara individual sebesar 76% tuntas dan 24% tidak tuntas dan secara klasikal dikatakan tuntas, berdasarkan analisis gain dan N-gain menunjukkan bahwa hasil belajar kognitif siswa mengalami peningkatan setelah di dilaksanakan model Problem Based Learning (PBL) berbantukan Program Adobe flash termasuk dalam kategori sedang dengan nilai sebesar 0,65. Aktivitas siswa pada pembelajaran fisika secara keseluruhan dengan model Problem Based Learning (PBL) berbantukan Program Adobe flash termasuk dalam kategori sangat baik dengan persentase nilai rata-rata sebesar 85,73 % .
Pengaruh Model Pembelajaran CIRC Berbantuan Audio Visual Terhadap Keaktifan dan Hasil Belajar Materi Sistem Pernafasan Pada Kelas VIII SMPN 8 Palangka Raya
Authors: Irbah Zahidah Naufal , Septiana Nurul , Ayatusa'adah Ayatusa'adah 
Published: February 2022

Tujuan penelitian adalah untuk mengetahui ada atau tidaknya pengaruh penggunaan model pembelajaran CIRC berbantuan media audio visual terhadap keaktifan dan hasil belajar serta untuk megetahui keterterapan model CIRC berbantuan media audio visual terhadap keaktifan serta hasil belajar di kelas VIII SMPN 8 Palangka Raya. Penelitian dilaksanakan menggunakan metode kuantitatif dengan design Nonequivalent Control Group design, karena rancangan ini melibatkan 2 kelompok yaitu: kelompok eksperimen serta kontrol. Pada kelompok eksperimen diberikan pretest terlebih dahulu, kemudian diberikan posttest pada akhir pertemuan. Pada kelas kontrol diberikan pretest terlebih dahulu, kemudian diberikan posttest pada akhir pertemuan. Sampel penelitian ini ialah 65 siswa. Teknik yang digunakan pada pengumpulan data berupa test dan juga angket. Teknik analisis data yang digunakan yaitu: analisis instrumen, perhitngan N-Gain, uji persyaratan analisiss data (uji normalitass dan uji homogeniitas serta uji hipotessis). Berdasarkan hasil perhitungan data, di dapatkan bahwa adanya pengaruh keaktifan peserta didik kelas VIII.7 dan VIII.8 SMPN 8 Palangka Raya melalui pembelajaran dengan model CIRC berbantuan media audio visual dengan skor rata yang di peroleh kelas eksperimen yaitu 86,99 dengan kategori tinggi dan skor rata yang diperoleh kelas kontrol yaitu 65,52 dengan kategori sedang. Terdapat pengaruh model CIRC berbantuan media audio visual terhadap hasil belajar dengan kategori pengujian yaitu nilai Sig. (2- tailed) < 0,05 yaitu0,000<0,05 maka H0 di tolak dan Ha di terima. Model pembelajaran CIRC berbantuan media audio visual bisa meningkatkan hasil belajar siswa boleh dilihat dari pengujian N-Gain di dapatkan hasil rata kelas ekspeimen 0.68 dengan kriteria sedang, untuk kelas kontrol 0,32 dengan kriteria rendah. Keterterapan model CIRC berbantuan media audio visual terhadap keaktifan dan hasil belajar di kelas VIII SMPN 8 Palangka Raya, termasuk kategori tinggi dimana skor rata-rata keaktifan 86,99 dan skor rata-rata hasil belajar pada posttest 84,54. Kata Kunci : keaktifan, hasil belajar, keterterapan
Pengaruh Rasa Ingin Tahu dan Percaya Diri Terhadap Kemampuan Literasi Sains Siswa Sekolah Menengah Atas Di Kota Tangerang Selatan
Authors: Noviyanto Tri Suwarno Handoko 
Published: February 2022

Rendahnya literasi sains siswa menjadi gambaran bahwa pemahaman sains masih tergolong rendah. Rasa ingin tahu dan percaya diri dianggap sejalan untuk mempengaruhi literasi sains. Tujuan penelitian ini untuk mengetahui: (1) pengaruh rasa ingin tahu dan percaya diri secara bersama-sama terhadap kemampuan literasi sains; (2) pengaruh rasa ingin tahu terhadap kemampuan literasi sains; dan (3) Pengaruh percaya diri terhadap kemampuan literasi sains. Metode yang digunakan adalah metode survey. Hasil penelitian ini menunjukkan bahwa: (1) terdapat pengaruh yang signifikan rasa ingin tahu dan percaya diri secara bersama-sama terhadap kemampuan literasi sains siswa SMA Negeri di Kota Tangerang Selatan. Hal ini dibuktikan dengan perolehan nilai Sig. = 0,045<0,05 dan nilai Fh = 3,210; (2) terdapat pengaruh yang signifikan rasa ingin tahu terhadap kemampuan literasi sains siswa SMA Negeri di Kota Tangerang Selatan. Hal ini dibuktikan dengan perolehan nilai Sig. = 0,027<0,05 dan nilai th = 2,252; dan (3) terdapat pengaruh yang signifikan rasa percaya diri terhadap kemampuan literasi sains siswa SMA Negeri di Kota Tangerang Selatan. Hal ini dibuktikan dengan perolehan nilai Sig. = 0,048<0,05 dan nilai th = -2,010. Dengan demikian dapat dibuktikan kemampuan literasi sains dapat dipengaruhi sikap rasa ingin tahu dan sikap percaya diri, baik secara parsial maupun bersama-sama.
Penerapan Metode Pembelajaran Bermain Peran pada Materi Sistem Pencernaan untuk Meningkatkan Aktivitas Dan Hasil Belajar Peserta Didik
Authors: Sulistiyohadi Arif 
Published: February 2022

Tujuan penelitian ini yaitu untuk mendeskripsikan pengaruh penerapan metode pembelajaran bermain peran terhadap aktivitas dan hasil belajar peserta didik MTsN 7 Ngawi. Penelitian ini merupakan penelitian tidakan kelas dengan parameter yang diamati yaitu persentase aktivitas belajar peserta didik dan tingkat ketuntasan yang mengindikasikan hasil belajar peserta didik. Penelitian dilaksanakan di MTsN 7 Ngawi pada peserta didik kelas VIII B sebagai subyek penelitian. Penelitian dilaksanakan dalam tiga siklus pembelajaran. Hasil belajar peserta didik diukur melalui pemberian tes formatif, sedangkan aktivitas belajar peserta didik dinilai menggunakan lembar obserbasi aktivitas siswa. Nilai hasil belajar dianalisi menggunakan rumus persentase ketuntasan peserta didik, sedangkan aktvitas peserta didik dianalisis secara deskriptif. Hasil penelitian ini menunjukkan bahwa persentase peserta didik aktif dalam pembelajaran mengalami peningkatan dari siklus I sampai siklus III secara berturut-turut yaitu 60.86%, 73,91%, dan 91,30%. Hasil belajar peserta didik juga mengalami peningkatan ditunjukkan dengan rata-rata nilai tes formatif yaitu 64,78, 78,26, dan 86,95. Penelitian ini disimpulkan bahwa penerapan metode pembelajaran siswa pada materi sistem pencernaan dapat meningkatkan aktivitas dan hasil belajar peserta didik
Monitoring Land Use/Cover Change Using Digital Classification Techniques: A Case Study of Sadhera Mines, Satna, Madhya Pradesh, India
Authors: Tiwari Awantika , Karwariya Sateesh Kumar , Tripathi Shashikant 
Published: February 2022

Land use land cover is an important part to understand present as well as past status of the earth’s surface. Land use and land cover are two different terminologies. Land use and land cover is dynamic in nature and provides a comprehensive perceptive of human activities with the environment. As land is becoming a scarce resource due to immense agricultural and demographic pressure, therefore the information on land use land cover and possibilities for their optimal use is essential for the selection, planning and implementation of land use schemes to meet the increasing demands for basic human needs and welfare. The study area is in the limelight due to continuous mining leading to large scale reduction in dense forest. The main objective of this study is to monitor change in landuse and land cover in sadhera and its surrounding mines of Katni district by using of remote sensing and geographic information system technique. The land use land cover change detection has been performed based on the analysis of the digital data of landsat TM (30 Meter) and landsat 8 (OLI)+ Pan (15 Meter) pertaining to 2009-10 and 2015-16. It has been observed that there has been a significant change in the land use pattern with an increase of 287.46 % in the mining area whereas the area under dense forest has decrease drastically by - 60.21 %. Hence, the information obtained from landuse landcover change detection map help to provide optimal solutions for the selection, planning, implementation and monitoring of mining areas.
Influence of MIG Welding Process Parameters on Tensile Properties of Mild Steel.
Authors: Swami Sanjay Ashok , Jadhav Sainand , Deshpande Abhijeet 
Published: February 2022

Metal Inert Gas welding (MIG) is a widely used welding method for mild steel (low carbon steel) in industry due to its high weld quality, good penetration and comparatively low investment. It is an arc welding process wherein coalescence is produced by heating the job with an electrical arc struck between a filler rod and the job. A Shielding gas (argon, carbon dioxide) is used to avoid atmospheric contamination of the molten weld pool. A filler material is added for joining the work piece by MIG welding. Many researchers investigated on different welding process parameters on mechanical & microstructural characteristics. Some researchers used the welding speed, welding current welding voltage, number of welding passes & work peace thickness for stainless steel, naval grade steel & aluminum. But the shielding gas flow rate & gas mixture also important factor which affects mechanical properties of mild steel. For this study, process parameters such as welding current, gas flow rate and gas combination used in the range 170-210A, 13-17 Lit/min & 0-100 % of CO2 respectively. The material used E-250 grade mild steel with 12 mm thickness. The effect of the welding parameter is investigated by designing the experiments using central composite matrix. Using the data generated by the experimentation, an empirical relation is obtained for tensile strength. The optimum value of tensile strength 356 N/mm2 is observed at 190A welding current, 15 Lit/min gas flow rate & 50% CO2+50% Argon gas combination.Index Terms—Co2 Welding, v-butt Welds, welding current, gas flow rate, Gas combination, Tensile strength.
Design, Fabrication and Performance Test of Ethanol Extractor From Cassava
Authors: Chikwado Ugwu Kenneth , Omoruyi A. 
Published: February 2022

ABSTRACTThe ethanol extractor was design, fabricated and its performance was evaluated. It comprises of two plastic containers (fermentation and separating tanks) each of which is 41.2 litters in capacity and a steam boiler of 10.6 liters in capacity which was mounted on an electric heater and the temperature was controlled by a thermostat. Aluminum pipe was used to connect the steam boiler by the top side in which gaseous ethanol flows to the water jacket of 15.3 liters in capacity to condense the ethanol to liquid which is collected at the bottom side of the water jacket. Thermometer was mounted on the steam boiler to read the temperature of the mixture inside the steam boiler. Continuous flow of water is ensured in the water jacket to enhance the rate of condensation. The performance test was carried out using four different feed rates of cassava starch at two different durations of extraction which include 500g, 1000g, 1500g and 2000g at 180minutes and 200minutes. Each one was replicated five times. The results showed that the quantity of alcoholic extracted depends on quantity of starch used. The high the quantity of cassava starch will lead to high durations of extraction that produced high volume of ethanol. The Analysis of Variance (ANOVA) for the effect of feed rates and time on the efficiency of the machine confirms that these factors are important parameters that significantly affect the performance and the volume of ethanol extracted by the machine.
Modification and Performance Evaluation of Date Palm Leaf and Leaf-end Pruning Machine
Authors: Mostofi Sarkari Mohammad Reza 
Published: February 2022

Modification of date palm leaf and leaf-end pruning machine was carried out according to the following aspects: Considering the conventional pruning method, Geometric dimension of the usual garden tool (sickle) or local named Acfea, Morphological form of date palm tree, Designed machine dimension.In this study, the main aims were focused on: Agronomical specifications, - machine net weight, - on farm operation, - application efficiency. To design and develop this machine, a lightweight Hydro-motor as well as proper size frame, handle, proper, hydraulic control valve and a disk-type cutting blade were used. The machine is able to pruning the leaves and leaves-end with depth of up to 10 cm. In general, two changes were considered for on farm application: as a part of date palm service machine and /or a self-operating machine.In the first phase, because of the lack of enough space for bucket of machine to reach the date palm trunk, pruning operation can be perform from a distance from 1 to 2 meter from the main tree trunk; therefore, the designed machine was equipped with a 3-meter length boom so it can be controlled from the lifting cabin. In the second phase, for the trees that are not higher than 4 meters, the machine can be used as a self-operating machine by ladder.The machine was equipped with a short and convenient handle, which will help the pruner to reach the tree trunk for pruning the leaves and leaves’ end.The prototype pruning machine was installed to the tractor MF-285 and site conditions to test and evaluate performs the machine technical and ergonomically parameters was successful. Field operation of tractor mounted leaf and leaf-end pruning machine was performed in Date Palm and Tropical Fruits Research Institute. 95% of the confidence interval of pruning leaf and leaf-end were achieved between 8 to 14 s and 10 to 19 s, respectively. The total pruning time was gained between 9.9 to 13.8 min for each tree.