bluuebunny/crossref_metadata_2025 huggingface dataset:
Contribution of Factors Affecting Crop Production in Bangladesh: An Empirical Analysis with Production Function Approach
Authors:   Dhaka School of Economics, Bangladesh, Faruq-Uz-Zaman Muhammad
Published: April 2021

Bangladesh has achieved a tremendous success in food production in last few decades amidst challenges of land degradation, land use changes and climate effect. In spite of the increasing trend of yields of crops, there still remain some challenges to meet the growing needs due to increase in population and loss of land to development activities. This study aims to identify the rate of contributions or economics of factors of crop production in Bangladesh. Cobb-Douglas production function has been applied in this study of crop production using a number of production factors within the broad terms land, labour and capital. Secondary data, representing factors of production, have been selected based on literature reviews so that they can be appropriate for this study. Data of crop production have been considered as dependent variables, whereas, land area coverage for agricultural production, labour employed in agriculture, agricultural household expenditure, fertilizer applied and irrigation coverage have been considered as independent variables. Land and labour is negatively correlated with crop production, whereas, fertilizer is positively correlated. Crop production which shows decreasing return to scale deserves the adoption of new technology and good agricultural management practices.
A questionnaire survey on customer satisfaction with services at branch offices in Higashihiroshima City, Hiroshima prefecture
Authors: Moteki Yasutoshi
Published: April 2021

This study distributed on-site surveys to examine customer satisfaction with the counter services provided at a local government branch office (Shisho) in Higashihiroshima City, Japan, with a particular focus on direct experiences at the physical service counters. We obtained a total of 240 responses over six weekdays during the survey period. The multiple-choice questionnaire items were divided into three groups, including A) hardware (e.g., physical aspects), B) software (staff responses), and C) services (e.g., administrative practices). Results were then subjected to both a principal component analysis and multiple regression analysis. Among all explanatory variables comprising groups A) through C), the regression analysis showed that group B) (i.e., software, particularly in relation to human factors) was the most important for the dependent variables, followed by C) and A), respectively (adjusted R2 value of .51; Model 2).
Research trends in local autonomy studies in Japan: text analyses of article titles in the Journal of Urban Management and Local Government Research
Authors: Moteki Yasutoshi
Published: April 2021

Research trends in studies of local governments in Japan have been analysed quantitatively using text-mining methods on approximately 35 years of article titles from the Journal of Urban Management and Local Government Research, from its first issue (1985) to the vol. 35, no. 1 (2020). Co-occurrence network analysis and correspondence analysis were conducted to determine the changes in research interests during the target period. Substantially more research on accounting, finance, management, and reform was seen in the target journal after 1980. The extracted words prefecture, city, case, evaluation, and analysis show the features of local government studies in Japan after the enactment of decentralization reforms in March 2000.
 The author interprets the first dimension of the configuration figures of correspondence analysis as an axis of accounting and time; the second dimension concerns financial accountability; and the third dimension concerns public enterprise. The publisher association of the journal has a large number of members who specialise in accounting and local finance, including certified public accountants and tax accountants, and the characteristics of such a membership structure are reflected in these results.
Design and simulation of an out-of-plane electrothermal microactuator
Authors: Pham Van Men Truong, Ngoc Bich Duong
Published: April 2021

Microactuators are one of the most important components in microelectromechanical systems (MEMS). Therefore, designing effective out-of-plane actuators has been in progress for the last decade. This paper presents a novel design of the microactuator with a double stepped beam structure for large out-of-plane deflection output applied to microvalves. The design and analysis of the out-of-plane microactuator are implemented by the finite element method. Silicon is selected as the material of the actuator and the beam motion is generated by the Joule heating effect. Compared to a single stepped beam design reported in the literature, the simulation results show that the proposed double-stepped beam structure can deliver a much larger out-of-plane deflection. Under an applied current of 15 mA, the maximum deflection of the double stepped beam is nearly seven times higher than that of the single stepped beam structure. In addition, the stress analysis indicates that the largest stress (1.46 GPa) induced in the beam is much smaller than the yield strength (7 GPa) of the selected silicon material.
An improved iris recognition system based on the fusion of the curvelet and DTCWT
Authors: Nguyen Nguyen Nam Phuc, Le Tien Hung, Nguyen Quoc Trung, Ha Huu Huy
Published: April 2021

In recent years, iris recognition has been emerged as one of the most popular biometric techniques because it guarantees high universality, distinctiveness, permanence, collectability, performance, acceptability, circumvention. In the paper we propose an improved system for iris recognition with high accuracy by fusing curvelet and dual tree complex wavelet transform. In our system, the main features are extracted from pre-processed/normalized iris images using both curvelet and Dual Tree Complex Wavelet Transform (DTCWT) tranforms. After performing different classifiers independently, all the results are fused to get final classification in the decision level to increase the accuracy of system. Finally, the random forest classifier and CATIA dataset are used to measure the performance of the proposed method. The experimental results show that the technique of the paper based on fusion of the curvelet and DTCWT is promising when compared with other existing similar techniques.
Emotional exhaustion: How does it relate to work engagement?
Authors: Pham The Nam Tran, Van Trang Tieu
Published: April 2021

People- to some extent- are largely or partly affected by emotions in life as well as in work. Emotion exhaustion definitely influences the quality of the job of the employees. Authors intend to examine the factors that can possibly affect emotional exhaustion and the relationship between emotional exhaustion and work engagement. The research was conducted with the assistance of Smart PLS software through quantitative method with data of from employees working in Hochiminh city. Results of the study showed that ethical leadership has negative relationship to emotional exhaustion while it is positive to that of challenge demand. In addition, there bears a negative relationship between emotional exhaustion and work engagement. In theory, previous researches were invigorated through the results of the study. In practice, ethical leadership should be appreciated, and challenge demand should be minimized to prevent the incurrence of emotion exhaustion- an effective navigator for low engagement at work.
Peranan serta tantangan profesional guru sebagai sebuah profesi
Authors: Rahman Monalisa
Published: April 2021

Profesi keguruan pada hakikatnya adalah suatu pernyataan terbuka yang menyatakan bahwaseseorang tersebut mengabdikan dirinya pada suatu jabatan karena orang itu merasaterpanggil untuk menjabat dan melaksanakan tugasnya sebagai pendidik. Guru yang taatterhadap kode etik akan mendorong mereka berperilaku sesuai dengan norma yang berlakuoleh etika profesi yang ditetapkan oleh organisasi atau perkumpulan profesinya selamamenjalankan tugas profesionalnya. Untuk menjaga harkat dan martabat profesi gurumemiliki peranan, hak dan kewajiban yang harus dijalankannya sebagai seorang pendidik.Kualitas pendidikan dan profesionalisme guru saling berkorelasi hingga keduanya tidakbisa terlepas terutama dalam proses pencapaian tujuan pendidikan. Satu yang memengaruhikualitas pendidikan yaitu profesionalisme guru sebab guru merupakan penentu darikeberhasilan dan kegagalan dari suatu proses pembelajaran hingga hal ini akan berpengaruhpada masa depan peserta didik. Adapun komponen yang terdapat dalam kompetensikeprofesionalan seorang guru adalah kompetensi pedagogik, kompetensi profesional,kompetensi sosial dan kompetensi kepribadian.
Konsep Profesionalisme Guru Dalam Pendidikan
Authors: Najmi Aulia
Published: April 2021

Profesi dapat diartikan sebagai suatu pekerjaan atau jabatan yang menuntut keahlian, yang didapat melalui pendidikan dan latihan tertentu, menurut persyaratan khusus memiliki tanggung jawab dan kode etik tertentu. Profesi guru adalah keahlian dan kewenangankhusus dalam bidang pendidikan, pengajaran dan pelatihan yang ditekuni untuk menjadi mata pencaharian untuk memenuhi kebutuhan hidup yang bersangkutan. Guru merupakan suatu profesi, yang berarti suatu jabatan yang memerlukan keahlian khusus sebagai guru dan tidak dapat dilakukan oleh sembarang orang diluar bidang pendidikan. guru adalah pendidik profesional dengan tugas utama mendidik, mengajar, membimbing, mengarahkan, melatih, menilai, dan mengevaluasi peserta didik pada pendidikan anak usia dini jalur pendidikan formal, pendidikan dasar, dan pendidikan menengah. Profesionalisme sangatdiperlukan dalam memajukan pendidikan di Indonesia tentu juga sebagai perilaku kerja yang mengutamakan kesempurnaan hasil dengan menjalankan mekanisme kerja yang benar, hal ini sangat diperlukan untuk menunjang pendidikan Indonesia guru yang benar Profesi guru dalam undang-undang No.14 tahun 2005 tentang guru dan dosen mengharuskan sebuah komponen pokok yang harus dimiliki seorang guru profesional, kompetensi tersebutadalah; kompetensi profesional, kompetensi pedagogik, kompetensi sosial, dan kompetensi kepribadian.
Kompetensi Profesionalisme Guru
Authors: Nurqomah Resty
Published: April 2021

Guru profesional senantiasa berupaya untuk meningkatkan kualitas dan senantiasa untuk mengupdate kompetensi yang dimilikinya. Guru dikatakan kompetensi di bidangnya apabila memiliki kemampuan secara pengetahuan, keterampilan dan sikap. Guru merupakan komponen utama dalam proses pembelajaran di sekolah yang menentukan keberhasilan peserta didiknya. (Barghava et al, 2011: 77) menyatakan bahwa faktor terpenting dalam pembelajaran adalah guru, di mana mengajar merupakan kebiasaan yang dilakukan seorang guru dalam menjalankan tugasnya sebagai seorang pendidik. Proses pembelajaran terjadi apabila interaksi antara guru dan peserta didik terlaksana dengan adanya perubahan tingkah laku berupa pengetahuan yang sifatnya baru, penguatan wawasan dan pengalaman. Guru merupakan seseorang yang seharusnya dihormati karena memiliki kepedulian yang sangat tinggi terhadap keberhasilan pembelajaran di sekolah. Selain itu, guru sangat berperan membantu perkembangan peserta didik untuk mewujudkan tujuan hidupnya secara optimal dengan memperhatikan peserta didik secara kelompok juga memperhatikan peserta didik secara individual.
Profesi Guru dalam Meningkatkan Mutu Pendidikan
Authors: Taqwim Titis Muthiana
Published: April 2021

Pada umumnya masyarakat awam memaknai kata profesionalisme bukan hanya digunakan untuk pekerjaan yang telah diakui sebagi suatu profesi, melainkan pada hampir setiap pekerjaan. Guru profesional tidak boleh terombang-ambing oleh selera masyarakat, karena tugas guru membantu dan membuat peserta didik belajar. Guru adalah jabatan profesional yang memilik tugas pokok yang amat menentukan dalam proses pertumbuhan dan perkembangan peserta didik.
Contribution of Factors Affecting Crop Production in Bangladesh: An Empirical Analysis with Production Function Approach
Authors: Faruq-Uz-Zaman Muhammad
Published: April 2021

Bangladesh has achieved a tremendous success in food production in last few decades amidst challenges of land degradation, land use changes and climate effect. In spite of the increasing trend of yields of crops, there still remain some challenges to meet the growing needs due to increase in population and loss of land to development activities. This study aims to identify the rate of contributions or economics of factors of crop production in Bangladesh. Cobb-Douglas production function has been applied in this study of crop production using a number of production factors within the broad terms land, labour and capital. Secondary data, representing factors of production, have been selected based on literature reviews so that they can be appropriate for this study. Data of crop production have been considered as dependent variables, whereas, land area coverage for agricultural production, labour employed in agriculture, agricultural household expenditure, fertilizer applied and irrigation coverage have been considered as independent variables. Land and labour is negatively correlated with crop production, whereas, fertilizer is positively correlated. Crop production which shows decreasing return to scale deserves the adoption of new technology and good agricultural management practices.
Profesionalisme Guru Dalam Pendidikan
Authors: Prasetyo Rudy
Published: April 2021

Profesi adalah suatu pekerjaan atau jabatan yang menuntut keahlian tertentu. Guru dapatdigolongkan ke dalam salah satu profesi, karena untuk menjadi seorang guru memerlukankeahlian khusus dan tidak dapat dilakukan oleh sembarang orang di luar bidang pendidikan.Dalam Undang-Undang No. 14 Tahun 2005, dikatakan peranan guru sebagai pendidikprofesional dengan tugas utama mendidik, mengajar, membimbing, mengarahkan, melatih,menilai, dan mengevaluasi peserta didik. Selain peranan tersebut guru juga memiliki hakdan kewajiban yang harus dilaksanakan, hak dan kewajiban tersebut juga telah tertera didalam UU No.14 Tahun 2005. Guru sebagai tenaga profesional, hanya dapat dilakukan olehseseorang yang mempunyai kualifikasi akademik, dan kompetensi yang sesuai denganpersyaratan untuk setiap jenis dan jenjang pendidikan tertentu. Guru sebagai tenagaprofesional juga mempunyai visi terwujudnya penyelenggaraan pembelajaran sesuaidengan prinsip profesionalisme untuk memenuhi hak yang sama bagi setiap warga negaradalam memperoleh pendidikan yang bermutu.
Composition of permutations in the symmetric group
Authors: Lobo Matheus Pereira
Published: April 2021

We calculate all compositions of permutations in the symmetric groups S2 and S3.
PERAN MBAH SURGI MURANG DJOYO DALAM PERUBAHAN MASYARAKAT ABANGAN MENJADI SANTRI DI DESA PASURUHAN LOR JATI KUDUS
Authors: Rahmawati Laila
Published: April 2021

Skripsi ini adalah hasil penelitian tentang Peran Mbah Surgi Murang Djoyo Dalam Merubah Masyarakat Abangan menjadi Santri Di Desa Pasuruhan Lor Jati Kudus.Penelitian ini betujuan untuk memperoleh ilmu dan wawasan tentang bagaimana masyarakat Desa Pasuruhan Lor pada zaman dahulu dan sekarang. Selain itu jugadapat melihat dan mempelajari faktor dari penyebab perubahan masyarakat Desa Pasuruhan Lor.Dalam penelitian ini menggunakan jenis penelitian lapangan (field research) dengan pendekatan kualitatif, sumber data yang digunakan dalam penelitian ini adalahsumber primernya berupa wawancara kepada para tokoh, kyai dan anggota masyarakat di Desa Pasuruhan Lor Jati Kudus dan sumber sekundernya berupa buku tentang Agama Jawa Abangan, Santri, Priyayi Dalam Kebudayaan Jawa oleh Clifford Geertz, sosial masyarakat, buku tentang aqidah Islam. Teknik pengumpulan data melalui interview atau wawancara, observasi, dokumentasi. Selanjutnya data yang diperoleh dianalisis dengan metode reduksi data dan display data yang bersifat merangkum hal-hal yang pokok kemudian diuraikan dengan singkat dalam bentuk naratif.Hasil penelitian menunjukkan bahwa Mbah Surgi Murang Djoyo merubah masyrakat Desa Pasuruhan Lor Jati Kudus dari abangan menjadi santri melalui pendekatankepercayaan masing-masing masyarakat. Kepecayaan yang telah dipahami oleh masing-masing masyarakat diolah Mbah Surgi Murang Djoyo dengan menyisipkan aqidah islam secara perlahan hingga dapat diterima oleh masing-masing masyarakat. Mbah Surgi Murang Djoyo berdakwah dengan cara mengikuti aktifitas keseharian masyarakat.
Profesi Seorang Guru
Authors: Mu'thia Farah
Published: April 2021

Profesi secara etimologi berasal dari kata “profession” yang berasal dari bahasa Latin “profesus” yang berarti mampu atau ahli dalam suatu bentuk pekerjaan. Profesi dapat diartikan sebagai suatu pekerjaan atau jabatan yang menuntut keahlian, yang didapat melalui pendidikan dan latihan tertentu, menurut persyaratan khusus memiliki tanggung jawab dan kode etik tertentu. Guru yang piawai dalam melaksanakan profesinya dapat disebut sebagai guru yang kompeten dan profesional. Hak dan kewajiban guru ini dituangkan dalam pasal UU No. 14 Tahun 2005 tentang guru dan dosen sehingga setiap guru mendapatkan perlindungan terhadap hak yang dimiliki dan kewajiban yang harus dilaksanakan. Kompetensi profesional merupakan kemampuan dasar yang harus dimiliki oleh guru. Di Indonesia penghargaan terhadap profesi guru belumlah sebaik kedua negara tersebut, akan tetapi sejak diterapkannya kebijakan sertifikat guru profesi guru mengalami kemajuan signifikan.
KONSEP DAN EKSISTENSI BIMBINGAN DAN KONSELING SEJALAN DENGAN SISTEM PENDIDIKAN ABAD 21
Authors: huang tiara alwafa nissa
Published: April 2021

Manusia adalah mahluk filosofis, artinya manusia mepunyai pengetahuan dan berpikir, manusia juga memiliki sifat yang unik, berbeda dengan mahluk lain dalam pekembanganya. Seiring dengan perkembangan IPTEK sistem pendidikan selalu mengalami pembaruan demi menyesuaikan diri. Di abad 21 pelaksanaan pendidikan menjadi tak bisa lepas dari teknologi. Eksistensi dan Kedudukan Bimbingan dan Konseling di Sekolah selalu sama, yaitu berguna untuk mengembangkan potensi pada diri individu sesuai dengan kemampuannya agar bisa menyesuaikan diri dengan lingkungan, baik lingkungan sekolah, lingkungan keluarga, dan lingkungan masyarakat. Layanan bimbingan dan konseling di abad 21 di upgrade demi membantu siswa dalam menghadapi permasalahan yang lebih kompleks. Artikel ini membahas konsep bimbingan dan konseling serta eksistensinya di dalam sistem pendidikan abad 21.
bimbingan konseling
Authors: dini iid rahma
Published: April 2021

Humanitarian development completely provides an image of the demands of human life and competence in humans. Just like in school, students do not only need study guidance but are equipped with moral and career guidance. The role of counseling in schools is very important to advance the achievement of educational goals.Besides that, services in schools regarding counseling need to be improved.To develop the potential of students and help solve the problems they face, there needs to be an organized, programmed and directed guidance and counseling service activity. In addition, expertise is required from the supervisor, and the availability of adequate funds and facilities. The main attention of schools, which is usually students with problems, is now focused on students who are normal, have no problems, the largest number and have the potential to be developed.Serving students in schools, especially those who help a lot, need to increase the number of professional guidance teachers who graduate from undergraduate guidance and counseling. This will maintain the image of the school and the image of guidance and counseling that has been tainted by many since it is done by non-teachers who do not work professionally.
PENGUASAAN SKILL GURU UNTUK PENDIDIKAN
Authors: HALISA HALDA NOR
Published: April 2021

Sebuah profesi tidak dapat dilakukan sembarang orang karena harus menempuh sebuah perguruan tinggi dan memiliki sebuah keahlian khusus, guru merupakan pekerjaan yang tergolong profesi karena untuk menjadi guru harus menempuh pendidikan tinggi, profesi guru sangatlah penting bagi sebuah bangsa karena guru merupakan profesi strategis bagi pemberdayaan dan pembelajaran suatu bangsa, guru juga merupakan pilar pembangunan bangsa dalam segala aspek kemampuan dan daya upaya guru untuk mempersiapkan sebuah pembelajaran. hak yang dimiliki seorang guru adalah memperoleh penghasilan di atas kebutuhan hidup minimum dan jaminan kesejahteraan sosial. Untuk memajukan pendidikan Indonesia maka dibutuhkannya profesionalisme guru karena profesionalisme guru berarti guru memiliki perilaku ketika bekerja mengutamakan adanya kesempurnaan hasil dalam menjalankan mekanisme kerja yang benar, dimana betul-betul mengajar peserta didik dengan baik, Komponen kompetensi yang harus dimiliki guru untuk dapat disebut sebagai guru professional adalah kompetensi pedagogik, kepribadian , sosial dan professional.
TUGAS DAN PERAN GURU PROFESIONALISME
Authors: Rahmatita Najmila
Published: April 2021

Guru ialah orang merencankan dan melaksanakan proses pembelajaraan, menilai serta mebimbing peserta didik untuk meraih cita cita dan meiliki budi pekerti. Profesi guru merupakan profesi yang dapat menentukan maa depan bangsa ini, guru tanpa mengusi bahan pelajaraan, strategi pembelajaarn mendorng siswa belajar untuk mencapai prestai yang tinggi. Guru yang profesional minimal memiliki komitmen kepada peserta didik dalam proses belajarnya, guru sering dijadikan tokoh teladan dan bahkan menjadi tokoh identifikasi diri. Dalam melaksanakan tugas profesinya secara baik. Profesi dapat diartikan sebagai suatu pekeijaan atau jabatan yang menuntut keahlian, yang didapat melalui pendidikan atau latihan tertentu. Pekerjaan yang bersifat profesional berbeda dengan perkerjaan lainnya karena suatu profesi memerlukan kemampuan dan keahlian khusus dalam melaksanakan prfesinya, profesi juga diartikan sebagai suatu jabatan atau perkejaan tertentu yang mensyaratkan pengetahuan dan keterampilan khusus yang diperoleh dari pendidikan akademis yang intensif. Jadi profesi guru adalah suatu perkerjaan jabatan yang menuntut keahlian tertentu artinya suatu pekerjaan atau jabatan yang disebut profesi tidak dapat dipegang sembarangan orang, tetapi memerlukan persiapaan khusus melalui pendidikan dan pelatihan secara khusus.
International Community Guidelines for Sharing and Reusing Quality Information of Individual Earth Science Datasets
Authors: Peng Ge , Lacagnina Carlo , Ivánová Ivana , Downs Robert R. , Ramapriyan Hampapuram , Ganske Anette , Jones Dave , Bastin Lucy , Wyborn Lesley , Bastrakova Irina , Wu Mingfang , Shie Chung-Lin , Moroni David F. , Larnicol Gilles , Wei Yaxing , Ritchey Nancy , Champion Sarah , Hou Chung-Yi , Habermann Ted , Berg-Cross Gary , Bugbee Kaylin , le Roux Jeanné
Published: April 2021

Under the auspices of the Earth Science Information Partners (ESIP) and with collaboration among members of the ESIP Information Quality Cluster (IQC), the Barcelona Supercomputing Center (BSC) Evaluation and Quality Control (EQC) team, and the Australia/New Zealand Data Quality Interest Group (AU/NZ DQIG), a community effort has been undertaken by international Earth Science domain experts. The objective of this effort is to develop global community guidelines with practical recommendations to promote the representation, sharing and reuse of quality information at the dataset level, leveraging the experiences and expertise of a team of interdisciplinary domain experts and community best practices. The community guidelines are inspired by the guiding principles of findability, accessibility, interoperability, and reusability (FAIR) and aim to help stakeholders such as science data centers, repositories, data producers and publishers, data managers and stewards, etc., i) to capture, describe, and represent quality information of their datasets in a way that is in line with the FAIR guiding principles; ii) to allow for the maximum discovery, trust, sharing, reuse and value of their datasets; and iii) to enable global access to and integration of dataset quality information. The vision of developing these guidelines is to promote the creation and use of freely and openly shared dataset quality information that is consistently described, readily available in community standardized formats, and capable of being integrated across commonly-used Earth science systems and tools for search and access with explicitly expressed usage licenses.
FUNGSI PENDEKATAN BIMBINGAN DAN KONSELING
Authors: Warsiati
Published: April 2021

Bimbingan dan konseling adalah pelayanan bantuan untuk peserta didik, baik secara perorangan maupun kelompok agar mandiri dan bisa berkembang secara optimal, dalam bimbingan pribadi, sosial, belajar maupun karier melalui berbagai jenis layanan dan kegiatan pendukung berdasarkan norma-norma yang berlaku.
The relationship between COVID-19-specific health risk beliefs and the motivation to quit smoking: a UK-based survey
Authors: Brown Chris Robert Harrison
Published: April 2021

Background: In some individuals who smoke the COVID-19 pandemic has triggered an increase in the motivation to quit smoking, due to the higher risk of severe COVID-19 infection. However, this change is not universal, and the motivation to quit appears dependent upon factors such as fear of COVID-19 and perceived risk from COVID-19. In the current investigation, both COVID-19 severity and infection probability beliefs were measured to isolate which beliefs correlated with the motivation to quit smoking. Methods: UK-based smokers (N = 243) completed an online survey between September and October 2020, in which they reported their current motivation to quit smoking, fear of COVID-19, and their beliefs about how severe COVID-19 infection would be and how probable COVID-19 infection was. Results: The only significant predictor of the motivation to quit smoking was the perceived probability of COVID-19 infection, β = .22, p < .001, 95CI[.10, .34]. This relationship remained when controlling for the general perceived probability and severity of other smoking-related health conditions, β = .20, p = .002, 95CI[.08,.32], suggesting a COVID-19-specific effect. Further, perceived probability of COVID-19 infection mediated the positive impact of fear of COVID-19 on motivation, β = .07, p = .006, 95CI[.03,.13]. Conclusions: The result places the perceived probability of COVID-19 infection as a central predictor of motivation to quit during the pandemic. Based on this evidence, messaging aiming to facilitate smoking cessation during the pandemic should focus on the highly contagious nature of the virus to increase the motivation to quit.
Resources and specificity of reclamation at the coal mining spoils
Authors: Gurkova Evgeniya A. , Androkhanov Vladimir A. , Lavrinenko Alexey T.
Published: April 2021

The article analyses Khakassia environmental conditions with the aim to estimate their resources and role in the efficient reclamation of coal mining spoils. The availability of potentially fertile soil substrate as a resource for large-scale reclamation was evaluated by the thickness of the quaternary clay and loamy bedrock layers, taking into account the amount of the substrate needed for reclamation. The availability of resources of the potentially fertile soil substrate was carried out by taking into account the thickness and soil bulk density of the humus horizon of the most fertile soils of the region, and considering the obtained estimayes within the framework of the methodical rules and normative regulations for optimal reclamation. The availability of hydrothermal resources was estimated by active temperature sums and hydrothermal coefficient. Overall the distribution of reclamation resources was found to be very uneven throughout the region. In the south of Khakassia with its large areas occupied by technogenic landscapes the reclamation resources were concluded to be in deficit, insufficient for carrying out the reclamation according with the optimal protocols. Such lack of resources is indirectly confirmed by prevailing areas occupied by self-revegetating coal mining spoils. The article also describes some successful reclamation examples where specific local environmental conditions were used in such a way as to decrease the effect of deficient resources, thus increasing the efficacy of the self-restoration of technogenic landscapes.
Soil invertebrates of the Russian forest-steppes (review of XX-XXI century publications and the revision of the results)
Authors: Mordkovich Vyacheslav H. , Lyubechanskii Ilya I.
Published: April 2021

The review describes the main stages of the formation and development of soil zoology as a science at the intersection of zoology, ecology and soil science, approximately over a century, i.e. from the beginning of the 1920s until now. The analysis of soil-zoological work carried out in the forest-steppe zone, the subject of which was the fauna and population of soil protozoa, worms, molluscs, microarthropods and larger arthropods, collectively referred to as mesofauna. The forest-steppe was chosen as the topic of the review because it is well-studied and because most of the work on this biome was published in Russian, and little is known abroad (which is not surprising, since more than 80% of the forest-steppe territory is located in Russia). The authors reviewed about 170 the most significant works inventorying soil fauna, analyzing its ecological structure and the functional role of its various components, as well as the studies of the anthropogenic impact on soil animal populations. The works are presented on a territorial basis: the west of the European part of the USSR (Russia), the Volga region and West Siberia. The high species richness and originality of the soil fauna in the forest-steppe, its high resistance to natural and anthropogenic influences were shown. At the end, the review indicates some promising directions for soil fauna research in the Russian forest-steppe.
THE EFFECTS OF ADDING DIFFERENT CARBON ON GROWTH AND SURVIVAL RATE OF TILAPIA FRY (Oreochromis niloticus)
Authors: Firmansyah Rodhi , Arsanti Arsanti , Panggabean Nabilah Hanun , Nasution Muhaimin Umri
Published: April 2021

The utilization of appropriate carbon sources will have a good impact on the application of biofloc technology in aquaculture. This study aims to determine the effect on adding the different carbon sources for growth and survival rate of tilapia fries (Oreochromis niloticus). The fries were kept by the densities 30 fries/tank. This study used a completely randomized design (CRD) with 4 treatments and 3 replications. The treatments were the addition of different carbon sources on the media biofloc : A (tapioca), B (molasses), C (wheat flour), and K (control). The results showed that the absolute rate of weight and length were found on the treatment of molasses (B) was 5.84 grams, 3.5 cm, and significantly different from the other treatments (P <0.05). While the highest survival rate is 83.33% at molasses (B). The mean temperature at 28.1 to 30.00 oC, the DO from 5.00 to 7.60 mg / L, and pH 5.00-7.20.
THE ANALYSIS OF OIL CONTENT IN SEDIMENT AND COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN BELAWAN WATERS OF MEDAN CITY, NORTH SUMATERA PROVINCE
Authors: Tanjung Doli Juna Setia , Amin Bintal , Nasution Syafruddin
Published: April 2021

This research was conducted in March 2019 to determine the oil content in sediment, it’s community structure of macrozoobenthos and it’s a relationship in Belawan Waters of Medan City, North Sumatera. Four sampling stations with five replications in each station were surveyed. The results showed that the average oil content in sediments exceeded the threshold had set by the National Academy of Science. Macrozoobenthos found consists of Ocypode quadrata, Scyla serrate, Rotun dicauda, Penaeus sp, Murex tribulus, and Nassarius olivaccus. The highest abundance was in Station 3 and the lowest was in Station 2. The diversity index in each station was generally very low. Dominance Index in Station 4 was medium, whilst the other stations were high. Evenness index showed in Station 3 and 4 were in high population, Station 1 was in medium population and Station 2 was in low population. Simple linear regression analyses between oil content in sediment with community structure of macrozoobenthos indicated negative correlation ( Y = 10,5-0,0001x , R2 = 0,0004 and r = 0,02 ) which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment.
THE RELATIONSHIP OF NITRATE AND PHOSPHATE WITH ABUNDANCE OF EPIPELIC IN THE WATERS OF SUNGAITOHOR VILLAGE, REGENCY OF MERANTI ISLANDS, RIAU PROVINCE
Authors: Beranda Ongki Okto , Amin Bintal , Siregar Sofyan Husein
Published: April 2021

The study was conducted in August-October 2019. Aims to determine theconcentration of nitrate, phosphate, uniformity index, diversity and index of dominancy,abundance of epipelic diatoms and know the relationship between nitrate,phosphate and epipelic abundance diatoms in the water area of Sungaitohor DesaMeranti of Riau Islands district. The method used in this research is a surveymethod consisting of 4 research stations. Location of observation and sampling is in the waters of Muara Sungaitohor Kabupaten Meranti Islands. Basedon the results of this study of nitrateconcentrations in the waters of Sungaitohor Bekisar village 0,068-0,092 mg/l, phosphate concentrations ranged0,097-0,220 mg/L. The Epipelic diatom found in the water area of Sungaitohorvillage amounted to 14 types. As for the abundance of type diatomsepipelics ranged from 27,531.72– 40,531.72 ind/cm2. From theCalculation of the community structure diatoms epipelic obtained diversityindex value (H ') which indicates a low index value of h ' has a value of2.7527 and is at a range of 1 ≤ H ' ≤ 3. The uniformity index (E) indicatesthat an epipelic spread is not balanced with an average value of 0.3643uniformity and is at a range of value ≤ 0.5. Meanwhile, the Dominance index (D)shows the value of 0.1704 where the value of the area in the waters ofSungaitohor village does not dominate. The relationship of abundance ofepipelic diatoms with the concentration of nitrate is positive and very weak,with a correlation coefficient of R = 0.0030. While the relationship ofAbundance diatomic epipelic relationship with phosphate concentrations isnegative and weak, with a correlation coefficient r = 0.262. Abundance ofdiatomic epipelics is directly proportional to the concentration of nitrate andinversely proportional to phosphate concentrations
CONDITION OF MANGROVE FORESTS IN DOMPAK URBAN VILLAGE BUKIT BESTARI SUB-DISTRICT RIAU ISLAND PROVINCE
Authors: Imanuel Andrean Nggara , Efriyeldi  , Nasution Syafruddin
Published: April 2021

This study was conducted in December 2019, which was located in Dompak Village, Bukit Bestari District, Tanjungpinang City, Riau Islands Province. The purpose of this study was to determine the species composition and condition of mangrove forests based on the value of density, canopy cover and the importance value index of mangroves. The survey method was used in this study, where the data collected was primary data. There are 10 types of mangroves including Avicennia lanata, Bruguiera gymnorrhiza, B. cylindrica, Rhizophora apiculata, R. stylosa, Nypa fruticans, Sonneratia alba, Xylocarpus granatum, Scyphiphora hydrophyllacea and Hibiscus tiliaceus. Mangrove density was in good condition with moderate to dense ​​ranging from 1344.44-1555.56 ind/ha. Canopy cover was in good condition ​​ranging from 61.49-68.47%. The highest importance value index was R. apiculata with a value of 140.32% and the lowest was B. cylindrica with a value of 4.29%.
ANALYSIS OF METAL Pb AND Cu CONTENT IN SEAGRASS (Sargassum sp) IN BAYUR BAYS OF WEST SUMATERA PROVINCE
Authors: Fitri Yuliza , Siregar Yusni Ikhwan , Amin Bintal
Published: April 2021

Located in Teluk Bayur bay the port is of the five biggest and busiest ports in Indonesia. High sea transportation activities and anthropogenic activities may lead to heavy metal pollution. The purpose of this study was to determine the concentration of Pb and Cu metals, in seagrass (Sargassum sp.) and to analyze the feasibility of consuming Sargassum sp. The method used in this study is a survey method, by analyzing heavy metal at Laboratory Pekerjaan Umum of Riau Province. The water quality temperatures 30-31oC, and salinity of 30-31 ppt, appeared curred velocity 0.06-0.08 m/sec, water transparency 100% with a depth of ± 1 m and pH 7. Pb concentrations the highest is 2.9367 μg/g at stations close to the port and the lowest is 2.2506 μg/g at stations close to tourist areas, and the concentration of Cu metal shows the highest 3.3850 μg/g at stations close to community settlements, and the lowest is 2.7772 μg/g near the port area of ​​Teluk Bayur. Based on the PTWI value, Sargassum sp. those originating from the waters of Teluk Bayur, West Sumatra, are still safe for consumption. Based on the Anova Pb and Cu tests in Sargassum sp. do not different (p> 0.05).
HUBUNGAN SKOR MODIFIED SEQUENTIAL ORGAN FAILURE ASSESSMENT (MSOFA) DENGAN KEJADIAN VENTILATOR ASSOCIATED PNEUMONIA (VAP) PADA PASIEN YANG TERPASANG VENTILATOR
Authors: Yuliana Hetty , Deli Hellena , Agrina Agrina
Published: April 2021

Kegagalan multi organ pada pasien dirawat di ICU dapat meningkatkan terjadinya Ventilator Associated Pneumonia (VAP). Tujuan penelitian ini untuk melihat hubungan skor Modified Sequential Organ Failure Assessment (MSOFA) dengan kejadian VAP pada pasien yang terpasang ventilator. Desain penelitian ini adalah retrospective  study. Jumlah sampel pada penelitian ini adalah 36 orang responden yang diambil dengan teknik purposive sampling yang memenuhi kriteria inklusi. Data pada penelitian ini diperoleh dari rekam medis pasien yang dirawat di ICU dari Januari sampai Agustus 2019 diruang rekam medis. Alat ukur yang digunakan lembar observasi untuk melihat karakteristik pasien, skor MSOFA pada hari pertama dan Clinical Pulmonary Infection Score (CPIS) pada hari ketiga. Hasil penelitian ini didapatkan mayoritas diagnosis medis responden bedah saraf (44,4%), rerata untuk umur responden 52 tahun, rerata lama hari rawat 7 hari dan rerata lama pemakaian ventilator 85 jam 15 menit. Hasil analisis bivariat didapatkan nilai r 0,453, p value 0,006 lebih kecil dari nilai alpha 0,05 (p value < α). Kesimpulan terdapat hubungan antara skor MSOFA dengan kejadian VAP dan berpola positif dimana semakin tinggi skor MSOFA maka akan semakin tinggi risiko terjadi VAP, pada pasien yang terpasang ventilator di ICU RSUD Arifin Achmad Provinsi Riau. Skor MSOFA dapat memprediksi kejadian VAP sehingga dapat memotivasi perawat untuk menggunakan skor MSOFA dalam mengobservasi kejadian VAP.
Wolman Disease with a Low Cholesterol Level: An Unusual Laboratory Finding
Authors: Kor-anantakul Phawin , Tim-Aroon Thipwimol , Jaruratanasirikul Somchit
Published: April 2021

Wolman disease is a very rare autosomal recessive genetic disorder. The patients have the typical clinical finding of hepatosplenomegaly but with an abnormal lipid profile of high levels of total cholesterol (TC), triglycerides, and low-density lipoprotein cholesterol (LDL-C), but a low level of high-density lipoprotein cholesterol (HDL-C). We report a 1-month-old boy with Wolman disease who had hepatosplenomegaly but with an atypical abnormal lipid profile of low TC level, and very low levels of both LDL-C and HDL-C. The genetic study revealed a compound heterozygous mutation of the LIPA gene, leading to the confirmed diagnosis of Wolman disease.
La Covid-19, un choc de carrière restructurant le sens du travail
Authors: de Becdelièvre Pauline , Grima François
Published: April 2021

Cette recherche s’appuie sur une enquête qualitative auprès de salariés confrontés à la crise de la Covid-19 pour étudier l’influence de ce choc de carrière sur le sens du travail. En identifiant quatre transformations majeures du sens du travail, les travaux montrent que cette crise fut un choc de carrière important, provoquant une véritable réflexion sur le sens du travail favorisée par des caractéristiques individuelles et contextuelles.
Çalışanların tükenmişlik algıları: Maslach modeli ve tükenmişlik dönemleri çerçevesinde bir analiz
Authors: ÖZKANAN Arzu
Published: April 2021

Tükenmişlik sendromu çalışanların en çok karşılaştıkları sorunlar arasında yer almaktadır. Bu çalışmada, çalışanların tükenmişlik algıları metafor analizi yöntemi ile incelenmiştir. Bu çalışma ile çalışanların tükenmişlik sendromunu nasıl algıladıkları tespit edilerek tükenmişlik sendromu ile baş edebilmeleri için öneriler geliştirmek amaçlanmaktadır. Bu araştırma, olgu bilim deseni ile dizayn edilmiş nitel bir çalışmadır. Araştırmanın örneklemi, Isparta ilinde faaliyet gösteren özel hastanelerde çalışan 119 idari çalışandan oluşmaktadır. Çalışmaya katılan çalışanlardan “Tükenmişlik.… gibidir. Çünkü…..” ifadesini tamamlamaları istenmiş ve elde edilen veriler içerik analizi tekniği ile analiz edilmiştir. Verilerden 28 metafor ile bu metaforların ortak özelliklerine göre oluşturulmuş 4 kategori elde edilmiştir. Elde edilen bulgularda çalışanların tükenmişliği “son” olarak gördükleri ve bu sebeple baş etmek yerine teslim oldukları ortaya çıkmıştır. Ayrıca Maslach Tükenmişlik Modeli kategorileri çerçevesinde metaforlar incelendiğinde duygusal tükenmenin yoğun olarak görüldüğü ve çalışanların enerji ve motivasyon eksiklikleri dikkati çekmektedir. Aynı zamanda tükenmişlik dönemlerine göre metaforlara bakıldığında çalışanların en fazla engellenme döneminde oldukları görülmüştür. Bu durum diğer bulguları doğrular nitelikte çalışanların sona geldikleri algısını yansıtmaktadır. Tüm bulgular ışığında çalışanların herhangi bir nedenle yaşadıkları tükenmişlik sendromu ile baş edebilmeleri için öncelikle son algısından uzaklaşmaları, bu sendromdan çıkış yolunun olduğunu ve yalnız olmadıklarını bilmeleri gerekmektedir. Bu noktada hem çalışanlara hem de örgütlere çeşitli görevler düşmektedir.
Nghiên cứu ảnh hưởng của vật liệu các lớp phân cách và lớp móng trên tới lực tiếp xúc tại đáy tấm bê tông xi măng mặt đường ô tô
Authors: Tùng Hoàng , Hoài Nguyễn Thanh , Ngân Nguyễn Thị , Phước Phạm Hồng , Tới Phạm Tiến , Dưỡng Bùi Văn
Published: April 2021

Lớp phân cách có ảnh hưởng trực tiếp tới lực tiếp xúc ở đáy tấm bê tông xi măng với lớp móng phía dưới của tấm bê tông xi măng mặt đường ô tô và do đó ảnh hưởng tới tính toán chiều dài tấm bê tông xi măng. Lực tiếp xúc này được đặc trưng bởi lực dính c và hệ số ma sát tanϕ giữa tấm và móng, phụ thuộc vào bản chất vật liệu lớp móng trên và lớp phân cách. Tuy nhiên, trong tiêu chuẩn Việt Nam cũng như trong thực tế thi công hiện hành, chưa có quy định cụ thể về việc lựa chọn vật liệu lớp phân cách và ảnh hưởng của nó tới các đặc trưng của lực tiếp xúc đáy tấm. Các nội dung trên sẽ được đề cập, phân tích chi tiết trong bài báo này.

Từ khóa:

mặt đường cứng; lực tiếp xúc; lớp phân cách; khe co; co ngót.
Kỹ thuật đồng nhất hóa cho vật liệu đa tinh thể dị hướng sử dụng phần tử biên tỉ lệ
Authors: Phương Nguyễn Hoàng , Cảnh Lê Văn , Phúc Hồ Lê Huy
Published: April 2021

Bài báo trình bày phương pháp đồng nhất hóa cho vật liệu đa tinh thể dị hướng bằng phần tử biên tỉ lệ. Phần tử đại diện (Representative Volume Element- RVE) được rời rạc hóa thành các miền đa giác với số cạnh bất kỳ. Phần tử biên tỉ lệ (Scale Boundary Element Method-SBEM) được sử dụng để xấp xỉ trường chuyển vị của bài toán vi mô. Biến dạng tại điểm vật liệu của cấp độ vĩ mô được chuyển thành điều kiện biên trên phần tử đại diện. Các hằng số đàn hồi hữu hiệu của vật liệu đa tinh thể được xác định thông qua kỹ thuật đồng nhất hóa phần tử đại diện RVE. Ví dụ số được thực hiện cho mẫu vật liệu đa tinh thể với hướng góc α thay đổi. Kỹ thuật làm mịn lưới trên biên phần tử được áp dụng nhằm đánh giá độ hội tụ của phương pháp. Kết quả được so sánh với phương pháp phần tử hữu hạn thông thường FEM và nghiệm cận được cung cấp từ các nghiên cứu giải tích.

Từ khóa:

phương pháp đa tỉ lệ; kỹ thuật đồng nhất hóa; vật liệu đa tinh thể; phần tử biên tỉ lệ.
Nghiên cứu chế tạo bê tông nhẹ sử dụng hạt Polystyrene phồng nở tái chế
Authors: Thắng Nguyễn Công , Tuấn Nguyễn Văn , Đức Hàn Ngọc , Quảng Nguyễn Văn , Anh Đỗ Thị Vân , Thắng Hoàng Văn , Thanh Đỗ Thị
Published: April 2021

Bê tông nhẹ cốt liệu rỗng đang được nghiên cứu và ứng dụng khá rộng rãi trong các công trình xây dựng hiện nay với các ưu điểm làm giảm nhẹ cho các kết cấu đồng thời tăng khả năng cách âm, cách nhiệt tăng hiệu quả năng lượng cho công trình xây dựng. Bài báo này sẽ đưa ra những kết quả ban đầu về việc sử dụng cốt liệu rỗng polystyrene tái chế trong chế tạo bê tông nhẹ. Các kết quả nghiên cứu về việc sử dụng cốt liệu rỗng polystyrene tái chế (rEPS) để chế tạo bê tông nhẹ với khối lượng thể tích đạt từ 1000 - 1500 kg/m­3 và cường độ nén từ 5,0 - 15 MPa. Kết quả nghiên cứu được thực hiện trên 08 cấp phối với các tỷ lệ N/CKD là 0,25 và 0,30; hàm lượng cốt liệu nhẹ sử dụng 25%, 30%, 40% và 50% theo thể tích của bê tông. Kết quả nghiên cứu cho thấy, khi hàm lượng cốt liệu nhẹ tăng thì khối lượng thể tích giảm. Tuy nhiên, độ hút nước mao quản và cường độ nén của bê tông có xu hướng giảm. Kết quả đánh giá hệ số dẫn nhiệt của bê tông theo công thức thực nghiệm của ACI213 R14 cho thấy hệ số dẫn nhiệt của bê tông giảm khi tăng hàm lượng cốt liệu nhẹ.

Từ khóa:

bê tông nhẹ; polystyrene tái chế; khối lượng thể tích; độ hút nước mao quản; cường độ nén, hệ số dẫn nhiệt.
Novel Method for Probabilistic Evaluation of the Post-Earthquake Functionality of a Bridge
Authors: Terzic Vesna , Pasco William
Published: April 2021

While modern overpass bridges are safe against collapse, their functionality will likely be compromised in case of design-level or beyond design-level earthquake, which may generate excessive residual displacements of the bridge deck. Presently, there is no validated, quantitative approach for estimating the operational level of the bridge after an earthquake due to the difficulty of accurately simulating residual displacements. This research develops a novel method for probabilistic evaluation of the post-earthquake functionality state of the bridge; the approach is founded on an explicit evaluation of bridge residual displacements and associated traffic capacity by considering realistic traffic load scenarios. This research proposes a high-fidelity finite-element model for bridge columns, developed and calibrated using existing experimental data from the shake table tests of a full-scale bridge column. This finite-element model of the bridge column is further expanded to enable evaluation of the axial load-carrying capacity of damaged columns, which is critical for an accurate evaluation of the traffic capacity of the bridge. Existing experimental data from the crushing tests on the columns with earthquake-induced damage support this phase of the finite-element model development. To properly evaluate the bridge's post-earthquake functionality state, realistic traffic loadings representative of different bridge conditions (e.g., immediate access, emergency traffic only, closed) are applied in the proposed model following an earthquake simulation. The traffic loadings in the finite-element model consider the distribution of the vehicles on the bridge causing the largest forces in the bridge columns.