bluuebunny/crossref_metadata_2025 huggingface dataset:
Genetik Algoritma Kullanılarak Gerilim Düşümlerinin Kestirimi
Authors: ÇOLAK Sümeyye , KARCI Hasarı , SONBAŞ COBB Buket
Published: May 2022

Bu çalışmada genetik algoritma kullanılarak elektrik dağıtım sistemlerinde buslarda meydana gelen gerilim düşümlerinin sayıları kestirilmeye çalışılmıştır. Geliştirilen metot, IEEE 24-Bus, IEEE 30-Bus ve IEEE 118-Bus sistemlerinde farklı eşik değerleri ve farklı popülasyon büyüklükleri için denenmiştir. Her faklı durum için 10 adet benzetim yapılarak ortalama hata değeri hesaplanmış ve sonuçlar tablolar halinde sunulmuştur. Elde edilen sonuçlara göre genetik algoritmanın gerilim düşümü sayısının kestirimindeki başarısının kabul edilebilir düzeyde olduğu, hata sayının genellikle 2’den küçük olduğu görülmüştür.
Three Roads to the Welfare State
Authors: Fanning Bryan
Published: May 2022

Bryan Fanning traces the development of European welfare states in this accessible analysis of social change from the Industrial Revolution onwards. The book explores evolutions through the lens of three traditions - social democracy, Christian democracy and liberalism - with insights into the people and beliefs that influenced each.
SOIL FERTILITY IN THE CENTRAL-SOUTHERN PART OF ROMANIA EXPRESSED BY SOIL REACTION AND NUTRIENT CONTENT: A CASE STUDY FROM THE RAUL ALB CATCHMENT, DAMBOVITA COUNTY
Authors: CIOCAN Florin , MANU Catalin , MATACHE Alexandru , PETRESCU Nicolae , MURATOREANU George
Published: May 2022

The field research took place between 2019 and 2020, in the upper river basin of the Raul Alb creek, located in the northwest of Dambovita County, the analysed land area being 4034 ha. Underlying the research of the complex erosion phenomena faced by the analysed territory was the soil survey, which consisted of sampling 46 soil profiles in the representative areas for the analysed territory. For the analysis of the soil fertility, chemical analyses were performed regarding the pH, humus content, reported to the soil texture in the topsoil and the supply of nutrients (nitrogen, phosphorus and potassium), also physical-mechanical analysis (soil texture), interpreted according to the “Methodology for the Development of Pedological Studies, Volumes I, II, III, 1987”. By centralising the obtained results, it found that 59.42% of the total analysed land surface had a weak alkaline pH, at least in the topsoil, due to the CaCO3 content. For the supply of humus, the most significant share is that of the extremely low-supplied soils with this element in the topsoil, i.e. 73.42% of the mapped area, and in terms of the nitrogen supply, 26.67% of the total surface of the river basin shows severe deficiencies in this element. The situation is worrying indeed in the case of the supply of soils with mobile phosphorus, with 3 280.27 ha of the mapped surface having very low or low contents of this element, making up 81.31%. However, for potassium, the soils from the upper sector of the Raul Alb catchment are mostly moderately and well supplied, with only 620.85 ha (15.39%) being extremely poorly supplied with this element.
Formación del profesorado de educación infantil en Andalucía. un estudio de género en matemáticas
Authors: Pedrosa-Jesús´´ Cristina , Gutiérrez-Rubio David , León-Mantero Carmen , Madrid María José
Published: May 2022

En los últimos años la igualdad efectiva entre hombres y mujeres se ha convertido en un objetivo del que toda la sociedad debe ser partícipe y eso incluye a la comunidad educativa. En este sentido, resulta relevante conocer si la formación de maestros se aborda o no desde la perspectiva de género. El objetivo de este trabajo es analizar desde esta perspectiva los planes de formación en matemáticas y educación matemática de los futuros maestros en Educación Infantil de las universidades andaluzas. Para ello se ha realizado una investigación exploratoria, basada en el análisis de contenido de los planes de igualdad de las universidades andaluzas y de las guías docentes de distintas asignaturas de matemáticas y educación matemática, utilizando entre otros el software ATLAS.ti. Los resultados muestran que, si bien se aprecia una preocupación por el profesorado por el uso de lenguaje inclusivo, no se identifica un criterio único a la hora de implementarlo. Con respecto al uso del masculino genérico, su uso es mayor en las guías de las asignaturas donde la totalidad del profesorado es femenino. Por otro lado, en la mayoría de las guías analizadas no se hallaron competencias ni contenidos centrados en la perspectiva de género.
Effect of welding current on the microstructure and corrosion of discrete arced weld droplets deposited on sugarcane roller shells
Authors: Buchanan Vernon Everett
Published: May 2022

This paper reports on the relationship between the arcing current and the microstructural and corrosion behavior of discrete weld droplet deposited on sugar mill roller shells made from grey cast iron during hardfacing in a typical sugarcane factory. Hardfaced droplet deposits were removed from three simulated roller shells, which were arced with different current, and subjected to porosity, microhardness and corrosion tests.  The results revealed that the percentage porosity, microhardness value and corrosion rate significantly depended on the welding current; the rate of corrosion generally increased with a decrease in porosity and an increase in microhardness.
Pilot study on the impact of an environmental public health contingency (COVID-19) on the stress and general health of workers from different organizations in the industrial sector located in the metropolitan area of Nuevo León
Authors: Núñez Nora Isela Macías , González Aurora Moyano , González Víctor Hugo Ibarra , Moreno José Armando Peña , Ramírez Álvaro Antonio Ascary Aguillón , Parga Martha Esthela Calderón
Published: May 2022

The different situations that arise in society, in relation to the health part, also affect workers to some extent, this is the case of the COVID -19 pandemic that has affected all organizations in some way, such as in its utilities, in reducing personnel, in adapting new forms of work, in case it requires it and in activating health protocols to prevent contagion in its workers, this health situation that is present worldwide has had a great effect impact on people from the psychological aspect, it is for this reason of interest to carry out this research, with the general objective "to determine the impact of environmental contingency in terms of stress and general health of workers in different business sectors located in the state of Nuevo León, Mexico”, for the beginning of this investigation, the analysis was carried out on the first 97 instruments answered, which were are the Perceived Stress Scale (10 items) and the Goldberg General Health Questionnaire, with the result that 57% of the sample perceive themselves as stressed and 43% state that they have perceived some symptom that has affected their general health, as far as At the hierarchical levels within the organization, it was found that 31% of the sample with an administrative position perceive themselves stressed by this pandemic situation, and 26% of the operational position perceive stress.
Placenta Praevia in a Tertiary Hospital in Southern Nigeria: A Six-Year Review of Prevalence, Trend, and Risk Factors
Authors:   Department of Obstetrics and Gynaecology, Rivers State University Teaching Hospital, Port Harcourt, Rivers State, Nigeria. & Department of Community Medicine, College of Medical Sciences, Rivers State University, Port Harcourt, Nigeria., Wekere Felix Chikaike Clement
Published: May 2022

Background: Placenta praevia is a major cause of antepartum haemorrhage. It is associated with high foeto-maternal morbidity and mortality. The study was aimed at reviewing cases of placenta praevia managed at the Rivers State University Teaching Hospital (RSUTH) over 6 years, to determine the prevalence, trend, and sociodemographic/obstetrics factors. Methods: A descriptive cross-sectional study of all recorded cases of placenta praevia managed at RSUTH from 1st January 2016 to 31st December 2021. Descriptive and inferential statistics were derived using IBM, Statistical Product and Service Solution (SPSS) version 25.0 Armonk, NY. Results: There were 14,195 deliveries and 137 cases of placenta praevia; giving the prevalence of 0.97% or 9.7 per 1000 or 1 in 103 deliveries The rate of placenta praevia per 1000 deliveries increased from 0.98 in 2016 to 3.03 in 2018 and then decreased to 1.54 in 2021. The mean (SD) age and gestational age of the participants were 32.5±4.9 (95% CI: 31.67, 33.34) years and 36.7 ±2.6 (95% CI: 36.34,37.10) weeks. The modal parity was para 1. The median blood loss was 600mls range 300-3,200 mls. The majority of the patients were booked 116 (84.7%), multiparas 65(47.4%) and had tertiary level education 56(40.9%). The most common risk factor identified was the history of a previous caesarean section 66(37.5%). Conclusion: The prevalence of placenta previa in RSUTH is 0.97%; with a declining pattern of occurrence. Placenta praevia occurs more among multiparous women with a history of previous caesarean sections. Knowledge of this will be helpful to clinicians in making diagnosis and management of cases.
EFFECTS OF FOOT REFLEXOLOGY ON POST-MENOPAUSAL HYPERTENSIVE WOMEN AMONG FABRIC PRODUCTION WORKERS IN SELECTED COMPANIES AT TRICHY
Authors: Paramasivam Ms. Sudha , rani Dr. Bimla Rani
Published: May 2022

Blood pressure is typically lower in pre-menopausal women than in men. However, after menopause, the prevalence of hypertension in women is higher than in men.
EFFECTIVENESS OF LIFE SKILLS EDUCATION AMONG ADOLESCENT GIRLS –A REVIEW
Authors: kumari Merlin , sharma sukhda
Published: May 2022

Today’s teenagers are the leaders of tomorrow. They are under immense pressure, societal as well as from their peers. Girls are especially vulnerable at this stage.
Insecticide selectivity to the predator Podisus nigrispinus (Heteroptera: Pentatomidae) used in eucalyptus culture
Authors:   , Silva Wiane Meloni
Published: May 2022

The control of defoliating caterpillars in forestry includes chemical and biological insect management. The predatory stink bug Podisus nigrispinus Dallas (Heteroptera: Pentatomidae) is a biological control agent, but some insecticides can affect this natural enemy, which needs risk assessment. Therefore, the selectivity of insecticides for use with non-target organisms in agricultural and forestry areas is essential for integrated pest management. The present work aimed to fill gaps about the effects of insecticides when used together with the predator P. nigrispinus. In chapter 1, the objective was to evaluate the side effects on survival, respiration, behavioral response, preference and consumption in third instar nymphs of P. nigrispinus when exposed to Bacillus thuringiensis (Bt), permethrin, tebufenozide and thiamethoxam in the laboratory. The insecticides permethrin and thiamethoxam were the most toxic to P. nigrispinus nymphs. The survival of nymphs of this predator was 93.3%, 66.7%, 56.6%, 0% and 0% in the control, treatments with tebufenozide, Bt, permethrin and thiamethoxam, respectively. Bt and the insecticides tebufenozide, permethrin and thiamethoxam reduced the respiratory rate of P. nigrispinus. Permethrin, tebufenozide and thiamethoxam affected the locomotion of this insect's nymphs. Prey treated with Bt, permethrin and thiamethoxam were less preferred by P. nigrispinus. Furthermore, the reduction in the consumption of prey, treated with neurotoxic insecticides, reduced the predatory potential of this natural enemy. Bt and tefubenozide had low toxicity for P. nigrispinus, but neurotoxic products had low compatibility with this natural enemy and, therefore, they are not recommended, with this predator, in the management of forest pests. In chapter 2 we investigated the survival, preference and consumption of prey and the histopathology of the midgut of adults of P. nigrispinus fed on prey treated with the lethal concentration (LC 50 ) of Bacillus thuringiensis (Bt), permethrin, tebufenozide and thiamethoxam. The insecticides Bt, permethrin and thiamethoxam reduced survival and prey consumption in P. nigrispinus fed on prey contaminated with these insecticides.However, the four insecticides tested, including tebufenozide, caused histological changes, such as irregular epithelial architecture, cytoplasmic vacuolization and release of cell fragments in the lumen of the midgut of P. nigrispinus. The sublethal effects of Bt, permethrin, tebufenozide and thiamethoxam on the natural enemy suggest that they should be better evaluated to be used in conjunction with P. nigrispinus for integrated pest management in forestry. Keywords: Biological control. Compatibility. Non target organism. Pesticides.
Tax Revenue Potential and Effort in Ethiopia: a Comparative Analysis of Stochastic Frontier Analysis vs Utility Maximisation Function as a New Measure of Tax Effort
Authors: Fisseha Fentaw Leykun
Published: May 2022

This article tests the new measure of tax efforts following Dalamagas et al (2019) who argued that in the context of the Arrow-Debreu economy, with fixed labour supply and no savings, disposable income is equal to private consumption, a utility function with two arguments, income, and government spending, is maximised concerning direct and indirect tax rates. The optimal level of tax revenue is derived from a utility maximisation process and is shown to be equal to the difference between income and consumption. As a robustness check, the results of the utility maximisation function were compared to the findings of the stochastic frontier model. Each model records very near results for tax effort, tax potential, and tax gaps. The empirical findings revealed that Ethiopia has a large tax gap and poor tax effort, which is primarily due to policy choices and enforcement procedures.
Determinants of Municipal Taxes Payment by Informal Micro and Small Business in Côte d’Ivoire
Authors: Traore Nohoua
Published: May 2022

This article analyses the determinants of municipal tax payments of informal micro- and small businesses in Côte d’Ivoire. The data used relates to 276 informal production units surveyed in the framework of the CAPEC/IDRC project. Using descriptive statistics and the estimation of a Probit model, the study highlights the variables that both negatively and positively inf luence tax payments. It emerged that the perception of the high level of taxes, the fact that the manager of the informal production unit is an Ivorian, the narrowness of the market, and the problems regarding premises negatively affected tax payments. Conversely, the business environment, the electronic payment of invoices, the simplification of procedures, the number of employees and the difficulties in accessing financing enhance the propensity of managers to pay taxes.
PENGARUH STRESS KERJA, LINGKUNGAN DAN PELATIHAN TERHADAP KINERJA KARYAWAN STUDI KASUS PT MARUKI INTERNATIONAL INDONESIA
Authors: Haslindah Andi , Andrie Andrie , Agustiadi Irwan
Published: May 2022

Sumber daya manusia (SDM) adalah elemen inti dari sebuah organisasi. Oleh karena itu, pengelolaan dan pengembangan sumber daya manusia sangat penting bagi organisasi Penelitian ini bertujuan untuk mengetahui apakah terdapat pengaruh stress kerja, lingkungan kerja dan pelatihan terhadap kinerja karyawan. Metode penelitian ini menggunakan metode kuantitatif dengan teknik pengumpulan data menyebarkan kuesioner lalu menganilisis data SMART PLS software versi 3.0. Hasil analisis data menunjukkan bahwa lingkungan kerja berpengaruh terhadap kinerja karyawan dengan nilai p values menunjukkan angka 0,000 dengan nilai signifikansi < 0,05. Sementara nilai t-statistik sebesar 16.199 > 1,96. Kemudian pelatihan juga berpengaruh terhadap kinerja karyawan dengan nilai p values menunjukkan angka 0,035 dengan nilai signifikansi < 0,05. Sementara nilai t-statistik sebesar 2,120 > 1,96. Sedangkan stress kerja tidak berpengaruh terhadap kinerja karyawan dengan nilai p values menunjukkan sebesar 0,232 dengan nilai signifikansi 0,05. Sementara nilai t-statistik sebesar 1.196 > 1,96. Adapun yang paling berpengaruh terhadap kinerja karyawan adalah lingkungan kerja dengan nilai 1,068. Sehingga dapat di simpulkan bahwa jika karyawan mengalami stress kerja atau tidak maka tidak akan mpengaruhi kinerja mereka, untuk memperoleh hasil kinerja baik maka dibutuhkan lingkungan kerja yang nyaman, aman, harmonis dan juga untuk meningkatkan kinerja dibutuhkan pelatihan untuk karyawan.
PENGARUH FRAKSI VOLUME KOMPOSIT SERAT SABUT KELAPA BERMATRIK POLIMER TERMOSETING POLYESTER TERHADAP KEKUATAN LENTUR
Authors: M Saripuddin , J Jamaluddin , Azis Darmadi , Haslinah Andi
Published: May 2022

Sabut kelapa merupakan bahan penguat alami dalam pengembangan komposit berpenguat serat alam. Dalam penelitian mengenai sabut kelapa sebagai penguat divariasikan dengan berbagai ukuran. Tujuan penelitian ini untuk mengetahui pengaruh variasi fraksi volume komposit serat sabut kelapa bermatrik resin polyester terhadap kekuatan lentur dan untuk mengetahui kekuatan maksimal  komposit serat sabut kelapa bermatrik polyester. Metode yang dingunakan adalah metode esperimen untuk membuat komposit serat sabut kelapa. Komposit serat sabut kelapa yang digunakan yaitu dengan variasi fraksi volume 25%, 30% dan 40%. Dibuat variasi ukuran penguat dari serat dan kemudian dibuat komposit dengan melakukan perendaman sabut kelapa menggunakan larutan alkali NaOH 5% selama 2 jam. Selanjutnya dilakukan uji spesimen. Hasil penelitian yang diperoleh menunjukkan bahwa komposit dengan fraksi volume 40% memiliki kekuatan bending maksimal sebesar 61,967 (Mpa) dan yang paling rendah adalah komposit dengan fraksi volume 25% memiliki kekuatan bending sebesar 36,575 (Mpa). Sehingga disimpulkan bahwa semakin kecil fraksi volume pada komposit maka akan semakin kecil kekuatan bending yang dihasilkan, kemudian semakin besar fraksi volume komposit maka semakin besar kekuatan bending yang dihasilkan.
ANALISIS SUPPLY CHAIN MANAGEMENT PADA PROSES PRODUKSI MENGGUNAKAN METODE AHP (STUDI KASUS PT. PP. LONDON SUMATRA INDONESIA TBK )
Authors: Haslindah Andi , Syarifuddin Rizal , Darmawan Syamsul , Khaerul Muh Aedil
Published: May 2022

Supply Chain Management merupakan suatu pendekatan yang digunakan secara efektif untuk mengintegrasikan pemasok, pabrik, gudang, serta tokoh-tokoh sehingga produk yang dibuat dapat di distribusikan dalam jumlah, posisi, serta waktu yang pas. Adapun tujuan dilakukannya penelitian ini yaitu ntuk mengetahui  pengadaaan bahan baku pada proses  produksi PT. PP. London Sumatra indoneisa tbk dan untuk mengetahui dampak penerapan metode AHP pada supply chain management PT. PP. London Sumatra indoneisa tbk. Pengumpulan data yang digunakan dalam penelitian ini yaitu observasi, wawancara kepada staff perusahaan, dan studi pustaka. Pengolahan data yang digunakan yaitu editing, pemberian kode (coding), dan tabulasi. Metode analisis data yang digunakan dalam penelitian ini menggunakan metode kualitatif. Hasil penelitian ini peneliti menemukan bahwa bahan baku diperoleh dari dua lahan sendiri yang dikelola oleh perusahaan tersebut dengan total karet berkisar 200,000 – 400,000 ton/bulan. Karet tersebut diproduksi di pabrik dengan kapasitas pabrik 5 ton setiap sekali produksi dalam 2 kali shift per hari. Adapun kesimpulan dari penelitian ini yaitu dapat meningkatkan keuntungan serta memaksimalkan nilai keseluruhan yang dihasilkan untuk memenuhi kebutuahan dan permintaan costumer serta meminimumkan biaya secara keseluruhan seperti biaya pemesanan, penyimpanan, dan transportasi.
PENGARUH KOMPETENSI, MOTIVASI, LINGKUNGAN KERJA TERHADAP KEPUASAN PEKERJA DAN KINERJA PEKERJA PROSES PANEN PADI KELOMPOK TANI KABUPATEN PINRANG
Authors: Haslindah Andi , Modding Basri , Alam Roslina , Zakaria Junaidin
Published: May 2022

Pekerja atau buruh merupakan bagian dari tenaga kerja  yaitu tenaga kerja yang bekerja di dalam hubungan kerja, dibawah perintah pemberi kerja. Tujuan Penelitian ini menguji dan menganalisis secara empiris Pengaruh Kompetensi, Motivasi, Lingkungan Kerja terhadap Kepuasan Kerja, Pengaruh Kompetensi, Motivasi Lingkungan Kerja terhadap Kinerja Pekerja melalui kepuasan kerja. Desain penelitian ini Pendekatan penelitian yang dilakukan yaitu pendekatan kualitatif deskriptif dan kuantitatif.  Jumlah Sampel 300 Pekerja. Metode analisis data yang digunakan dalam pengujian hipotesis adalah Structural Equation Modeling (SEM) AMOS. Hasil Penelitian bahwa kompetensi  tidak berpengaruh terhadap kinerja melalui kepuasan pekerja proses panen padi pada kelompok tani di Kabupaten Pinrang tidak dapat memberikan hasil yang optimal kepada kelompok tani yang disebabkan kurang efesien, kualitas hasil kerja masih rendah, ketarampilan, penempatan posisi kerja. Hal ini terjadi karena kepuasan  pekerja tidak adanya perbedaan upah yang diterima antara kompetensi yang dimiliki oleh pekerja, Motivasi  pekerja memberikan pengaruh terhadap kinerja melalui kepuasan pekerja dimana dihargainya kinerja bila mencapai target baik jumlah maupun kualitas kerja yang telah ditetapkan oleh kelompok tani, hal ini menunjukkan kepuasan pekerja merasa puas dengan penghargaan yang diberikan atas hasil kerja, dan Lingkungan kerja berpengaruh terhadap kinerja melalui kepuasan pekerja dapat dijadikan parameter kepuasan pekerja. Lingkungan kerja berpengaruh terhadap kinerja pekerja dimana hasil yang diperoleh pekerja sangat optimal tidak terpengaruh oleh kondisi alam sedangakan pengaruh lingkungan kerja non fisik dapat meningkatkan kinerja atau hasil  dengan kerjasama dan komunikasi yang baik.
The Impact of Islamic Capital Market Literacy, Financial Behavior, and Income on the Interest to Invest in Islamic Capital Markets among Generation Z
Authors: Arifin Zaenal , Rizaldy Muhamad Rizky
Published: May 2022

This study aims to determine the effect of Islamic capital market literacy, financial behavior, and income on the interest in investing in the Islamic capital market among generation Z. The research type and method used is quantitative research. The data used is primary data collected using an online questionnaire containing questions related to the variables, spread among Gunadarma University students as respondents. This study uses multiple linear regression analysis with a non-probability sampling technique assisted by statistical tools SPSS version 25. The results of this study indicate that partially Islamic capital market literacy variables (X1) and financial behavior (X2) have a significant effect on interest in investing in Islamic capital market. However, income (X3) has no partial effect on interest in investing. Meanwhile, simultaneously, the variables of Islamic capital market literacy, financial behavior, and income have an influence on interest in investing in the Islamic capital market. The results of this study emphasize the importance of increasing financial literacy to increase the involvement of Generation Z in the Islamic financial system, by intensifying socialization and education programs, in this case on the Islamic capital market.
Effects of peer tutoring and study questions–based instructional strategies on students’ achievement and attitude towards mathematics in Bayelsa State, Nigeria
Authors: Aduwa John , Kpangban Emperor , Agboghoroma T. E.
Published: May 2022

The purpose of the study was to examine the effects of peer tutoring and study questions - based instructional strategies on students’ achievement and attitude towards mathematics. The study was carried out on Bayelsa State public secondary schools mathematics students. Two research questions were raised and two corresponding null hypotheses that were tested at 0.05 level of significance guided the study. A pretest- posttest control group quasi-experimental design was employed. The study made use of two experimental groups and a control group. The purposive sampling technique was used to select 173 junior secondary class 3 (JS3) mathematics students from six mixed secondary schools. Mathematics Achievement Test (MAT) and Mathematics Students’ Attitude Questionnaire (MSAQ) were the two instruments used in the study. These instruments were validated using face validity, content validity and construct validity. All the research questions were answered with mean and standard deviation. Furthermore, all the null hypotheses were tested using analysis of covariance (ANCOVA) and Scheffe test statistics. One of the findings shows that peer tutoring and study questions - based instructional strategies were effective in the improvement of students’ achievement in mathematics. The findings indicated that peer tutoring and study questions - based instructional strategies have some relative positive impact on students’ attitude in mathematics. The researchers thus recommended that peer tutoring and study questions – based instructional strategies should be adopted by mathematics teachers as instructional strategies at the Junior Secondary School level in Bayelsa State.
Women educational differential fertility and development in Benue State: The case of Makurdi and Ihugh women
Authors: Demekaa Bridget , Demekaa Bridget
Published: May 2022

This study explored women education to fertility in the Ihugh (rural) and Makurdi (urban) settings in Benue State. The purpose of the study was to test whether women with substantial schooling do have lower fertility than those without schooling. The study revealed that there is fertility differential in rural and urban settings, and that schooling is an index of the differentials. The study presents its findings and puts forward some recommendations that can help the government to address the issue of women education, especially the girl-child education.
Manajemen Pembenihan Ikan Kerapu Bebek (Chromileptes Altivelis) Untuk Menghasilkan Benih Yang Optimal
Authors: Iskandar Andri , Mulya M. Arif , Rifqi Ahmad Tsaqifur , Putro Dwi Handoko , Rifaie Arif Rahman
Published: May 2022

Humpback grouper Chromileptes altivelis is a marine fish that lives in tropical waters, especially in Indonesia. This fish has a high economic value and is the most expensive type of grouper in Indonesia. It can be used as ornamental fish or raised for consumption. Hatchery activities were started from brood rearing to produce productive broodstock, proper broodstock selection, multivitamin administration, and good environmental management. Humpback grouper was spawned en masse with a male to female ratio of 1:2. Fecundity of 1 female humpback grouper >300,000 eggs with a rematuration period of 20-30 days. Spawning using natural techniques accompanied by environmental manipulation, fish spawn for seven days during the dark moon. The number of eggs obtained was 560,000-2,000,000 eggs, with fertilization rate was 30-60%, and the hatching rate was 65-88%. The eggs that hatch into larvae were stocked with a density of 15-25 L-1. The larvae were transferred to a seed container at a size of 2-3 cm with a maintenance period of 40-45 days. Feeding at satiation using pellets measuring 1.1-2.0 mm with a protein content of 52-54% and 9-12% fat. Seeds were harvested at the age of 60 days when they reached a size of 5-6 cm, the survival rate was 3-5%.
Karakteristik Working Area di Atas Kapal Mini Purse Seine di Pelabuhan Perikanan Pantai Larangan Kabupaten Tegal
Authors: Imron Mohammad , Alamul Huda Muhammad Dendy , Novita Yopi
Published: May 2022

Mini purse seiner are the dominant vessels were operating in Tegal Regency and the number of these vessels have been increasing. These vessels at Larangan fishing port consist of 44 vessels of <10 GT and 37 vessels of ≥10 GT. Working activities on vessels <10 GT requiring 10 crew members, while vessels of ≥10 GT needs 15-20 crew members. Work accidents above the deck of the vessels have a high accident rate and are closely related to the value of theworking area. This research was intended with the aim of identifying activities and working area needs on the vessel by identifying the area of the used working area and formulating the adequacy of the work area for fishing activities. The sampling technique using a accidental sampling method with total sample is two to vessels <10 GT and three to vessels ≥10 GT . The data processing using mathematical calculations. Data analysis used descriptive analysis metode. The results of this study showed that the value of working area of vessels when setting conditions still far from sufficient area value. This conditions occurred because all crew gather in the same area when setting steps was conducted. The area mentioned which is on the left side of the ship when lowering the fishing gear, this will certainly increase the risk of work accidents.
Когнитив тизимларнинг эпистемологик талқини
Authors: Султанова Гулноза
Published: May 2022

Ушбу мақолада фан ва фалсафада когнитив фанларнинг вужудга келиши, уларнинг эпистемологик таҳлили берил-ган. Когнитивликнинг эвристик жиҳатлари, инсон мияси ва интеллекти бўйича тадқиқотларнинг натижаси ўлароқ сунъий интеллект соҳасининг шаклланиши кибернетикада янги муаммоларни келтириб чиқарди. Шунингдек, мақолада когнитив тизимларнинг сунъий ва табиий шаклларга бўлиниши маълум бўлди. Когнитив тизим-ларнинг алгоритмик ва мантиқий моҳияти аниқланди.
Meningkatkan Hasil Pembelajaran IPA Siswa Kelas IV SD Negeri 26 Lubuklinggau Menggunakan Model Think Pair Share
Authors: Ekawati Juwita
Published: May 2022

Berdasarkan pengamatan di kelas IV SD Negeri 26 Lubuklinggau, banyak peserta didik yang mengalami kesulitan dalam belajar IPA. Hal ini berarti perlu adanya upaya-upaya dalam mengatasi kesulitan belajar IPA tersebut. Upaya-upaya tersebut telah banyak dilakukan, seperti memperhatikan penyebab kesulitan belajar tersebut, baik yang bersumber dari dalam peserta didik sendiri, seperti kurangnya minat peserta didik pada pembelajaran IPA. Penelitian ini merupakan penelitian tidakan (action research), karena penelitian dilakukan untuk memecahkan masalah pembelajaran di kelas. Didalam pelaksanaan ini mengacu kepada rancangan beberapa siklus I dan II meliputi perencanaan, pelaksanaan, observasi dan refleksi. Berdasarkan hasil perbaikan pembelajaran IPA yang telah dilaksanakan dapat ditarik simpulan penerapan model pembelajaran Think Pair Share untuk meningkatkan hasil belajar pembelajaran IPA Siswa Kelas IV SD Negeri 26 Lubuklinggau.  Keadaan sebelum perbaikan pembelajaran, jumlah siswa yang mencapai ketuntasan belajar atau memperoleh nilai ? 70 baru mencapai 6 orang (25,00%), pada siklus 1 yang mencapai ketuntasan belajar 13 orang (65,00%) dan pada siklus 2 tingkat ketuntasan mencapai 18 orang (90,00%). Maka pelaksanaan pembelajaran IPA ini sudah dapat dikatakan berhasil karena sudah memenuhi syarat ketuntasan minimal klasikal yaitu  85%  siswa yang mencapai nilai ? 70
Meningkatkan Hasil Belajar Pembelajaran IPA Kelas V SD Negeri 25 Lubuklinggau Melalui Model Structured Problem Solving
Authors: Ferriyani Tri
Published: May 2022

Berdasarkan pengamatan permasalahan belum tercapainya KKM yang ditetapkan ini pada umumnya disebabkan karena siswa yang masih belum memahami dan mengerti tentang materi yang diajarkan oleh guru, dimana guru hanya menggunakan model pembelajaran ceramah. Umumnya setelah guru menjelaskan materi dan meminta siswa untuk bertanya, siswa lebih memilih diam. Diam siswa dikarenakan takut dan malu untuk bertanya mengenai materi yang dijelaskan oleh guru. Penelitian ini merupakan penelitian tidakan (action research), karena penelitian dilakukan untuk memecahkan masalah pembelajaran di kelas. Didalam pelaksanaan ini mengacu kepada rancangan beberapa siklus I dan II meliputi perencanaan, pelaksanaan, observasi dan refleksi. Dari hasil perbaikan pembelajaran IPA yang telah dilaksanakan dapat ditarik simpulan penerapan model pembelajaran Structured Problem Solving untuk meningkatkan hasil belajar pembelajaran IPA Siswa Kelas V SD Negeri 25 Lubuklinggau.  Keadaan sebelum perbaikan pembelajaran, jumlah siswa yang mencapai ketuntasan belajar atau memperoleh nilai ? 70 baru mencapai 7 orang (28,00%), pada siklus 1 yang mencapai ketuntasan belajar 13 orang (52,00%) dan pada siklus 2 tingkat ketuntasan mencapai 22 orang (88,00%). Maka pelaksanaan pembelajaran IPA ini sudah dapat dikatakan berhasil karena sudah memenuhi syarat ketuntasan minimal klasikal yaitu  85%  siswa yang mencapai nilai 70.
CARACTERIZAÇÃO GEOMÉTRICA, TOPOGRÁFICA E HIDROGRÁFICA DA MICROBACIA RIO DO GATO, RONDÔNIA, BRASIL
Authors: Ferreira Gabriel Silva Leão , Santos Junior Nilson Reinaldo Fernandes dos , Carneiro Kalline de Almeida Alves , Cavalheiro Wanderson Cleiton Schmidt , Fulan João Anderson , Nagao Eduardo Ossamu , Hara Francisco Adilson dos Santos , De Paulo Richard Coelho , Vendruscolo Jhony
Published: May 2022

A análise das características da paisagem da microbacia é essencial para subsidiar o planejamento e a gestão adequada dos recursos naturais, e, consequentemente, para o desenvolvimento sustentável. Diante do exposto, objetivou-se com este trabalho disponibilizar informações sobre as características hidrogeomorfométricas da microbacia Rio do Gato, utilizando geotecnologias e equações. A microbacia tem área de 11,06 km2, formato alongado, altitude média de 343 m, relevos planos a montanhosos, predominância de região com baixa influência na propagação de incêndios (69,53% da área total) e regiões que variam de aptas a extremamente aptas à mecanização agrícola (69,62% da área total), rede de drenagem de 52,58 km, padrão de drenagem dendrítico, rios de até 4ª ordem, 151 nascentes, 13,65 nascente km-2 (alta), densidade de drenagem de 4,75 km km-2 (muito alta), coeficiente de manutenção de 210,3 m2 m-1 (baixo), índice de sinuosidade de 31,02% (canal principal divagante) e tempo de concentração de 2,09 h (baixo). Com base nas características da paisagem da microbacia Rio do Gato, conclui-se que a região tem potencial para o desenvolvimento de atividades agropecuárias, florestais e de piscicultura, porém, nos sistemas agropecuários é necessário a adoção de práticas conservacionistas, principalmente nos relevos ondulados a montanhosos. Recomendam-se estudos relacionados com a dinâmica espacial e temporal da cobertura do solo na microbacia, para entender o processo de uso e ocupação do solo na região e identificar as áreas prioritárias para a manutenção da vegetação nativa, visando a conservação dos recursos hídricos.
Zebrafish Embryotoxicity and Teratogenic Effects of Christia vespertilionis Leaf Extract
Authors: Irfan Norazhar Anis , Wan Ibrahim Wan Norhamidah , Saleh Hodin Nur Atikah , Mohd Faudzi Siti Munirah , Shaari Khozirah
Published: May 2022

Christia vespertilionis or butterfly wings is a traditional medicinal plant used to treat, among others, colds and bronchitis. The plant was also reported to be a remedy for cancer, with several products based on the plant becoming commercially available, raising some safety concerns on its consumption. The present study was carried out to assess the toxic and teratogenic effects of the plant on the embryonic development of zebrafish (Danio rerio) as the animal model. Zebrafish embryos were exposed to 50, 100, 200, 400, and 800 μg/mL of the methanolic leaf extract of C. vespertilionis, starting from 5 to 120 hours post-fertilization (hpf). The median lethal concentration (LC50) value of the extract was determined to be 419.84 μg/mL, which is within the safety limit stipulated by the Organisation for Economic Co-operation and Development (OECD) guideline. However, results from the teratogenicity evaluation revealed multiple signs of developmental defects in embryos exposed to 200 μg/mL and higher concentrations of the extract. The magnitude of the defects was observed to be concentration-dependent. Moreover, no hatching and spontaneous movement of tail coiling were observed at 400 and 800 μg/mL concentrations due to the delayed growth and early mortality, respectively. A significant reduction in heartbeat rate was also reported for the surviving embryos at the 400 μg/mL test concentration. The present study has provided preliminary results on the potentially toxic and teratogenic effects of the extract at high concentrations.
Effect of Azolla filiculoides Meal Inclusion in the Napier Silage Total Mixed Ration on the In vitro Cumulative Gas Production and Digestibility
Authors: Hamidan Mohammad Fitri Rimi , Mohd Nadzir Mohd Noor Hisham , Abu Bakar Muhammad Faisal , Shohaimi Shamarina , Bidin Habsah , Samat Noraini
Published: May 2022

This study was carried out to determine the nutritional value and digestibility of total mixed ration (TMR) Napier silage with different Azolla filiculoides meal inclusion percentages. Samples of Azolla were cultivated in the tank with the media from 1.0 g/L dilution of sheep manure. Inclusion of 0% (control), 6% (T1), 10% (T2), 16% (T3), and 23% (T4) A.filiculoides meal was used to replace the proportion of Napier silage and soybean meal according to treatments with four replicates. All treatments were analyzed to determine the nutritional composition, and in vitro gas production was recorded for 96 h. In contrast, in vitro dry matter digestibility (IVDMD), in vitro organic matter digestibility (IVOMD), and metabolizable energy (ME) of each TMR mixture were determined using the published equation. As a result, only T4 had shown a significant difference (p<0.05) in crude protein (CP) and ether extract (EE) compared to other treatments. Values of dry matter (DM), CP, and ash of the TMRs were not affected on T1, T2, T3, and control. Neutral detergent fiber (NDF) and acid detergent fiber (ADF) were increased significantly at T3 and T4 compared to other treatments even though higher (p<0.05) acid detergent lignin (ADL) as replacement of 5.0% Napier silage and 1.0% soybean meal had shown a competitive value in their nutritional compared to the common TMR for ruminants. Therefore, a fermentation process was suggested to degrade indigestible components of A. filiculoides to enhance the potential of this species as an alternative feed source for a ruminant.
Effect of Sandwich Compost Leachate on Allium tuberosum Seed Germination
Authors: Phooi Chooi Lin , AzmanAzura Elisa , Ismail Roslan , Shahruddin Shafeeqa
Published: May 2022

Food waste is a serious global issue, and one way to reduce the impact of food waste is by composting. Sandwich compost is a type of fermented food waste compost created with microbial fermentation; meanwhile, the composting leachate provides nutrients for plants. Studies have shown that seed germination may be enhanced when treated with sandwich compost leachate. Furthermore, few studies have been on sandwich compost leachate used for seed priming. The objective of this study was to determine the effect of varying leachate concentrations of food waste sandwich compost and priming durations on the performance of Chinese chive (Allium tuberosum) seed germination. Chinese chive (Allium tuberosum) was chosen as the test crop. It is widely used as a flavouring herb with high economic potential; however, its seed germination time is long and requires pre-treatment such as crushing and seed priming to speed up the germination process. The study used four replications and a complete randomisation design (CRD). The seeds were exposed to different percentages of sandwich compost leachate (0.0%, 0.2%, 0.4%, 0.6%, 0.8%, and 1.0%) and priming duration (4, 8, and 12 hours). A significant interaction between the bio-nutri-priming concentration and priming duration was demonstrated by measuring the standard error of germination rate () and corrected germination rate index (Scorrected). A longer bio-nutri-priming duration was key for a higher seed vigour index. The bio-nutri- priming concentration and priming duration, however, had no significant interaction. Longer bio-nutri-priming durations were recommended to obtain better germination performance of Chinese chive. The study showed that a twelve-hour bio-nutri-priming duration and a 0.6 % leachate concentration significantly enhanced the Chinese chive seed germination and helped break seed dormancy.
Assessment of Fungal and Mycotoxin contamination of Maize grains collected from Senatorial Zones of Benue State
Authors: Vange Onyeche , Umeh Ebele , Gberikon Grace , Ogbonna Innocent
Published: May 2022

Assessment of fungal and mycotoxin contamination of maize grains collected from Senatorial Zones of Benue State was carried out in this study. Maize samples were collected in sterile polythene bags, labelled according to the sample locations and taken to the laboratory for analysis. Isolation and identification of the fungi was carried out using dilution method and standard mycological procedures. Samples were plated on Potato Dextrose Agar (PDA) supplemented with 60ug ml-1 chloramphenicol as a bacteriostat and incubated at room temperature for mycological identification and biomass. Quantifications of aflatoxin in the maize samples was carried out using Specific ELISA kit. Results showed that there was a high level of fungal contamination found in maize grains in Benue State.  Many (40%) of Zone A maize grains had a high level (≥ 3.1 × 107 cfu/g) of fungal contamination, 40% of Zone B maize grains also had (≥ 3.1 × 107 cfu/g) of fungal contamination. While 26.7% of grains purchased from Zone C had (≥ 3.1 × 107 cfu/g) of fungal contamination. It was also observed that none (0%) of Zone A maize grains had aflatoxin level above 6.57ppb, while 10% of Zone B seeds produced aflatoxin levels above 6.57ppb and 25% of maize seeds from Zone C had aflatoxin levels above 6.57ppb. It was also observed that Zone B maize grains had the highest aflatoxin level of

9.50ppb, followed by Zone C with 9.20ppb, while Zone A had the lowest aflatoxin level of 5.10ppb. High aflatoxin levels above the 5.0ppb recommended by Standard Organization of Nigeria (SON) as tolerance limit for maize grains were observed in many of the locations studied. Therefore maize grains should be dried properly and stored in less humid environment to avoid fungal growth and aflatoxin production, so as to prevent public health issues among consumers.
Assessing Behavioural Problems among Adolescents to Develop an Informational Booklet for Parents in Delhi
Authors: Gigy Divya
Published: May 2022

A descriptive survey study was conducted to assess the common behavioural problems among adolescents with a view to develop an informational booklet for the parents on management of these problems in selected areas of Delhi. The ‘System Model’ adopted from WHO, SEARO technical publication was used as the conceptual framework. A quantitative approach with descriptive survey design was used. The sample consisted of 100 parents of adolescents (10-19 years) from nurses’ residential campus at Shrinivas Puri, New Delhi. Purposive sampling technique was used to collect the sample. A structured questionnaire to assess the behavioural problems among adolescent along with the subject data sheet to obtain information about the demographic profile of the adolescents and a standardised tool of Kuppuswami scale for socioeconomic status of the adolescents’ parents was also used. The study showed that the majority of the adolescents (88%) had a mild behavioural problem. Area-wise analysis revealed that the highest problems were in the area of physical activities. There was a significant relationship between the behavioural problems among adolescents and the gender of the adolescents. Informational booklet was prepared based on the problems identified and was disseminated to parents for the management of behavioural problems among adolescents. Mild behavioural problems were found among adolescents. There was significant relationship between the behavioural problems among adolescents and the gender of the adolescents and no association between behavioural problems and other selected factors like age, socio-economic status and birth order.
Effect of Planned Teaching Programme on Knowledge Regarding Cardia Rehabilitation among Staff Nurses
Authors: Degavi Girish , Bhupali Preeti R
Published: May 2022

With a view to improve cardiac rehabilitation, an evaluative study was undertaken to assess the impact of planned teaching programme on 40 staff nurses of a hospital in Belgaum (Karnataka). The findings indicated that there was significant improvement in knowledge of staff nurses along various parameters after administering planned teaching programme.
Identifying the Performance Obstacles among Nurse Leaders in Selected Medical College Hospitals of Ernakulam
Authors: Devi M Sindhu , K Jibin
Published: May 2022

The work environment of nurse leaders may have substantial impact on both nursing outcomes and patient safety. Performance obstacles hinder nurse leaders’ capacity to perform their jobs and are associated closely with their immediate work environment. The aim of the study was to identify the performance obstacles experienced by nurse leaders in their work environment that cover all elements of the work system model. An exploratory, descriptive design was utilised; the sample included all available nurse leaders (n=50). Data was collected by using a self-administered checklist on performance obstacles prepared. It was conducted in selected medical college hospitals at Ernakulum. Results indicated that nurse leaders experience a variety of performance obstacles that cover all elements of the work system model. The study found that 32 percent of participants face low range of obstacles, 38 percent face medium and 30 percent face high range of obstacles.
ВЛИЯНИЕ ПАРАМЕТРОВ ПОТОКА В КАМЕРЕ СГОРАНИЯ ГАЗОВЫХ ТУРБИН НА ЭМИССИЮ NOx. Часть 1
Authors: А. М. Достияров  , С. Б. Садыкова  , Н. Р. Картджанов
Published: May 2022

В статье проанализировано влияние параметров потока в камере сгорания на эмиссию NOx. Приводится описание механизмов образования оксидов азота, а также исследуется влияние температуры пламени в камере сгорания на уровень термических и мгновенных NOx. Результаты исследования показывают, что полное устранение образования термических NOx не обеспечивают нулевого уровня NOx, в этом случае остаточным NOx является мгновенные NOx. А также показано, что зависимость термических оксидов азота от температуры является экспоненциальной, а образование мгновенных оксидов азота от температуры имеет линейную зависимость при температуре пламени меньше 1950К. Статья может быть интересна исследователям и специалистам в области теплоэнергетики.
ИМИТАЦИОННАЯ МОДЕЛЬ СОЛНЕЧНОЙ РАДИАЦИИ В СРЕДЕ MATLAB SIMULINK
Authors: Б. А. Нурсеитов
Published: May 2022

Солнечная энергия является одной из чистых видов энергии которая имеется у человечества на данное время. Рациональное и эффективное применение ее на благо развития нашей цивилизации является основной задачей. Существующие теоретические методы для определения величины потока солнечной радиации разнообразны. Ядром для разработки имитационной модели в данной статье основана на методике, предложенной Liu, Jordan и ASHRAE. В результате сочетания этих методов получилась имитационная модель для прогнозирования солнечной радиации на поверхность проектируемых солнечных установок. В качестве средой для модели применена пакет расширения Simulink на основе Matlab. Шаблон модели также можно использовать на других платформах подобно Java или Python для дальнейшей реализации. Разработанная модель может быть использовано для экспериментирования в целях анализа, оценки и определения суммарного солнечного радиации по часам для ясных дней, поскольку именно в эти дни процессы, происходящие в солнечных установках, имеют наибольшую эффективность. Кроме того, данную модель можно использовать как звено для моделирования солнечных электростанции. Результаты моделирования солнечной радиации были проверены с базой данных Power Data Access Viewer NASA.
La gestión de territorios periurbanos y rurales: diálogos interdisciplinares en la indagación del desarrollo y las políticas participativas/comunitarias
Authors: Brac Marcela , Weiss María Laura , Pérez Winter Cecilia , Castilla Malena
Published: May 2022

El presente Dossier tiene el objetivo de promover y reunir investigaciones vinculadas al desarrollo, las políticas públicas participativas y las iniciativas comunitarias locales en diversos procesos de gestión de los territorios rurales en la República Argentina. En tal sentido, han sido incluidos estudios desde una perspectiva interdisciplinaria, que busca poner en diálogo enfoques y aportes de la antropología del desarrollo, la sociología y la geografía rurales, la historia agraria, principalmente.