bluuebunny/crossref_metadata_2025_split huggingface dataset:
Does the copepod community of the Ganges River estuary of India indicate ecological stress?
Authors: Bhattacharya Papiya , Karan Samya , Bhattacharya Bhaskar Deb , Paul Sourav 
Published: June 2021

Abstract

Copepods are considered as indicators of ecological stresses of estuaries. Spatial-temporal changes of diversity, abundance, and dominance of the copepod community of India's Ganges River estuary were hypothesised to result from abiotic fluctuations, seasonal change and the COVID-19 lockdown which possibly affected the habitat. This hypothesis was studied by sampling the estuary on different occasions between February 2019 and October 2020. Salinity and pH showed significant temporal variability but not significant spatial variability. Water temperature showed no significant spatial-temporal variability. Salinity showed significant negative relationships with diversity and abundance of the copepod community. After the COVID-19 lockdown (between unlock phase 1 to 5), nutrient status of the estuary did not show significant temporal variation. The copepod community mostly comprised calanoids except for the cyclopoids Oithona spp. Relative abundances of Pseudodiaptomus binghami, Eucalanus crassus and Labidocera euchaeta declined but Paracalanus indicus, Acrocalanus gibber, Acrocalanus gracilis, Acartia spinicauda, Acartia sewelli and Oithona brevicornis increased after COVID-19 lockdown. Bestiolina similis was the most abundant copepod and along with Acartiella tortaniformis, Acartia spinicauda, Paracalanus parvus and O. brevicornis co-dominated the community on various occasions. Spatial ordination of the copepod community was not significant either in the pre- or post-lockdown period. Diversity and total abundance of the copepod community were affected neither by seasonal change nor by temporal variability of water temperature and pH. Temporal variability of species richness was significant only in the post-lockdown period. Pre- vs. post-lockdown comparisons of diversity indices and total abundance of the copepod community were not significant. Overall, copepods were not much affected by abiotic and seasonal changes, and the COVID-19 lockdown. That indicates their flexibility to habitat variability and less suitability as indicators of chronic ecological stresses of excessively large river-estuaries.
Unveiling metabolic vulnerability and plasticity of human osteosarcoma stem and differentiated cells to improve cancer therapy
Authors: Sala Gerardo Della , Pacelli Consiglia , Agriesti Francesca , Laurenzana Ilaria , Tucci Francesco , Tamma Mirko , Capitanio Nazzareno , Piccoli Claudia 
Published: June 2021

Abstract
BackgroundDefining the metabolic phenotypes of cancer-initiating cells or cancer stem cells and of their differentiated counterparts might provide fundamental knowledge for improving or developing more effective therapies. In this context we extensively characterized the metabolic profiles of two osteosarcoma-derived cell lines, the 3AB-OS cancer stem cells and the parental MG-63 cells. MethodsTo this aim Seahorse methodology-based metabolic flux analysis under a variety of conditions complemented with real time monitoring of cell growth by impedentiometric technique and confocal imaging were carried out. ResultsThe results attained by selective substrate deprivation or metabolic pathway inhibition clearly show reliance of 3AB-OS on glycolysis and of MG-63 on glutamine oxidation. Treatment of the osteosarcoma cell lines with cisplatin resulted in additive inhibitory effects in MG-63 cells depleted of glutamine whereas it antagonized under selective withdrawal of glucose in 3AB-OS cells thereby manifesting a paradoxical pro-survival, cell-cycle arrest in S phase and antioxidant outcome. ConclusionsAll together the results of this study highlight that the efficacy of specific metabolite starvation combined with chemotherapeutic drugs depends on the cancer compartment and suggest cautions in using it as a generalizable curative strategy.
Longitudinal observation of antibody responses after SARS-CoV-2 infection at 14 months
Authors: Zaidi Asiya kamber , Dehgani-Mobaraki Puya , Yadav Nidhi , Floridi Alessandro 
Published: June 2021

Abstract
A better understanding regarding antibody responses against SARS-CoV-2 after natural infection could provide valuable insights into the future implementation of vaccination policies. In this study, we aimed to assess the dynamics of IgG antibody titers in recovered COVID-19 patients over 14 months after mild and moderately severe infection using two FDA-approved immunoassays against SARS-CoV-2 Nucleocapsid protein (NCP)and anti-spike-receptor binding domain (S-RBD) through sequential serological tests at different time points. The demographics and clinical profile, that might be associated with the magnitude and longevity of antibody response were also analyzed.
Our results suggest antibody persistency in 31 out of 32 (96.8%) subjects at 14 months post-infection. A significant positive association was observed between disease severity and anti-S-RBD IgG titers at 14 months. Patients who reported a loss of smell and taste during the clinical course of the disease also developed significantly better antibody titers. Patients who were seronegative for anti-NCP IgG (n=7) at 10 months, were found to be seropositive for anti-S-RBD IgG at 12,13 and 14 months emphasizing on higher false-negative rate for N protein-based antibody assays when compared with the anti-S-RBD assays.
This study calls for prioritizing vaccination for “naive” individuals (with no previous history of COVID-19 infection) and recovered but antibody-negative individuals instead of “vaccination for all”. This strategy would be helpful in low-resource settings and areas experiencing vaccine shortages by saving time, effort, and assets that could be sourced for the vulnerable populations.
Credibility of disability estimates from the 2011 population census in Poland
Authors: Gołata Elżbieta , Dehnel Grażyna 
Published: June 2021

AbstractThe problem of disability is perceived as one of the most serious social issues faced by the contemporary society. The number of people with disability is consistently rising for a variety of reasons, including the aging of the population. Data on disability are collected through numerous statistical surveys, among which censuses are the most wide-scale ones. In the period between the 2002 and 2011 censuses (the last two censuses conducted in Poland), a 14% decrease in the number of people with disabilities was observed. However, it should be emphasised that significant modifications were introduced to the methodology of the last census. Population census 2011 was the first census in Poland combing administrative data sources and the survey sampling method. The main objective of the study is to assess the quality of estimates relating to the number of disabled persons, obtained on the basis of the 2011 census data. It is a comparative study aimed at identifying the similarities and discrepancies between the estimates, and determining the size and source of these discrepancies. The analysis takes into account such aspects as the measurement methods, the definitions and criteria of disability, the voluntary nature of the question, and the quality of the information on disability obtained from various sources.
Developing calibration estimators for population mean using robust measures of dispersion under stratified random sampling
Authors: Audu Ahmed , Singh Rajesh , Khare Supriya 
Published: June 2021

Abstract
In this paper, two modified, design-based calibration ratio-type estimators are presented. The suggested estimators were developed under stratified random sampling using information on an auxiliary variable in the form of robust statistical measures, including Gini’s mean difference, Downton’s method and probability weighted moments. The properties (biases and MSEs) of the proposed estimators are studied up to the terms of first-order approximation by means of Taylor’s Series approximation. The theoretical results were supported by a simulation study conducted on four bivariate populations and generated using normal, chi-square, exponential and gamma populations. The results of the study indicate that the proposed calibration scheme is more precise than any of the others considered in this paper.
Keterampilan kolaborasi mahasiswa teknologi pendidikan dalam mata kuliah kewirausahaan berbasis proyek
Authors: Nadhiroh Putri Siti , Trilisiana Novi 
Published: June 2021

Penelitian ini bertujuan untuk mendeskripsikan, (1) Proses pembelajaran Mata Kuliah Kewirausahaan berbasis proyek pada mahasiswa Teknologi Pendidikan sebagai strategi pengembangan keterampilan kolaborasi; (2) Keterampilan kolaborasi mahasiswa Teknologi Pendidikan. Penelitian ini menggunakan metode kualitatif yang berjenis studi kasus. Teknik pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa kegiatan pembelajaran kewirausahaan sudah dilakukan dengan baik melalui 6 tahapan, yaitu penyajian masalah, perencanaan kerja, penjadwalan, pembuatan proyek, penilaian, dan evaluasi. Keterampilan kolaborasi mahasiswa menunjukkan hasil yang baik, (1) Mahasiswa sudah mampu berkomunikasi dengan baik; (2) Mahasiswa tertib dalam kehadiran; (3) Mampu memimpin anggotanya; (4) Mahasiswa memiliki kesadaran tinggi untuk menyelesaikan proyek; (5) Kerjasama dilakukan dengan baik; (6) Mahasiswa menggunakan sumber terpercaya; (7) Mahasiswa mampu menyesuaikan diri dengan perubahan; (8) Mampu mengontrol emosi; dan (9) Sembilan dari sebelas kelompok lolos terdanai PMW 2019. Namun ada beberapa temuan indikator yang belum maksimal: (1) Mahasiswa tidak membuat peraturan; (2) Kurang percaya diri; dan (3) Pengorganisasian kinerja tidak dilakukan secara rinci. This study aims to describe, (1) The learning process of project-based Entrepreneurship Courses in Educational Technology students as a strategy for developing collaboration skills; (2) Collaboration skills of Educational Technology students. This research uses a qualitative method that is a type of case study. Data collection techniques using observation, interviews, and documentation. The results showed that the entrepreneurial learning activities had been carried out well through 6 stages, namely problem presentation, work planning, scheduling, project making, assessment, and evaluation. Student collaboration skills show good results, (1) Students are able to communicate well; (2) Students are orderly in attendance; (3) Able to lead members; (4) Students have high awareness to complete the project; (5) Cooperation is done well; (6) Students use trusted sources; (7) Students are able to adjust to changes; (8) Able to control emotions; and (9) Nine out of eleven groups qualify for PMW 2019. However, there are some findings of indicators that have not been maximized: (1) Students do not make regulations; (2) Lack of confidence; and (3) Organizing performance is not carried out in detail.
Studi evaluasi program pendidikan dan pelatihan komputer di balai latihan kerja kabupaten bantul
Authors: Ernawati Yuli , Suyantiningsih Suyantiningsih 
Published: June 2021

AbstrakPenelitian ini bertujuan untuk mengevaluasi program pendidikan dan pelatihan komputer Tahun 2019 di Balai Latihan Kerja Kabupaten Bantul, ditinjau dari aspek context, input, process, dan product dengan menggunakan model evaluasi CIPP. Penelitian ini merupakan penelitian evaluatif menggunakan pendekatan kualitatif. Teknik pengumpulan data dilakukan dengan metode observasi, wawancara,dan studi dokumen. Teknik analisis data yang digunakan meliputi: reduksi data, penyajian data, dan penarikan kesimpulan. Triangulasi yang digunakan adalah triangulasi sumber dan metode. Hasil evaluasi yang dilakukan dengan menggunakan model CIPP menunjukkan bahwa program pendidikan dan pelatihan Komputer di Balai Latihan Kerja Kabupaten Bantul secara keseluruhan masih belum sesuai dengan standar pelaksanaan Pendidikan dan pelatihan, baik dari aspek context, input, process, maupun product. Namun demikian, derajat ketidaksesuaiannya untuk masing-masing aspek dalam perspektif model CIPP yang dipergunakan masing-masing berbeda.Abstract This study aims to evaluate the computer training and education program in 2019 at Balai Latihan Kerja Kabupaten Bantul, in terms of context, input, process, and product using the CIPP evaluation model. This research is an evaluative study using a qualitative approach. Data collection techniques carried out using the method of observation, interviews, and document studies. Data analysis techniques used include data reduction, data presentation, and drawing conclusions. Triangulation used is the source and method triangulation. The results of evaluations carried out using the CIPP model show that the computer education and training program at Balai Latihan Kerja Kabupaten Bantul is still not in accordance with the standards of implementing education and training as a whole, both in the context, input, process, and product aspects. However, the degree of discrepancy for each aspect in the perspective of the CIPP model used is different from one to another.
Evaluasi dan Retrofit Struktur Gedung Beton Bertulang Akibat Kebakaran
Authors: Hidayati Nurul , Priyosulistyo Henricus , Triwiyono Andreas 
Published: June 2021

ABSTRACT Several studies have been carried out related to the impact of fire on the strength of reinforced concrete material. It shows that there is a decrease in strength and a decrease in structural stiffness. The degree of damage is dependent on the temperature and duration of the fire. To ensure accessibility, the building needs to be evaluated whether the building can be re-functioned immediately. The results of site investigation are evaluated to determine the structure retrofit and reinforcement methods and cost-effectiveness compared to the cost of a new building. The office building structure under review is analytically evaluated based on SNI 1726:2019 and SNI 1727:2018. The results showed that 31% of columns and 32% of beams need to be strengthened. In addition, steel bracing and CFRP wrapping on the structural elements were applied. The cost of retrofitting required Rp2.998.488.781,07, which is lower than the cost of the new building structure, which costs Rp4.950.087.016,34. ABSTRAKBeberapa penelitian yang telah dilakukan terkait dampak kebakaran terhadap kekuatan material beton bertulang, memperlihatkan bahwa terdapat penurunan kekuatan dan kapasitas struktur. Tingkat penurunan tergantung antara lain pada suhu dan durasi kebakaran. Untuk meyakinkan tingkat fisibilitas, gedung tersebut perlu dievaluasi kemungkinan dapat atau tidaknya gedung itu difungsikan kembali. Hasil evaluasi tersebut dijadikan pertimbangan dalam menentukan metode perbaikan dan perkuatan yang efektif untuk kemudian dibandingkan dengan biaya pembangunan gedung baru. Struktur gedung kantor PLN Unit Cabang Distribusi Jakarta Raya ini akan dievaluasi dengan cara analitis berdasarkan SNI 1726:2019 dan SNI 1727:2018. Terdapat total 31% kolom dan 32% balok yang perlu diperkuat. Metode perkuatan yang digunakan adalah penambahan bracing baja dan CFRP. Material CFRP tersebut dililitkan pada elemen struktur. Biaya perkuatan yang diperlukan adalah Rp2.998.488.781,07, lebih rendah dibandingkan nilai struktur gedung, yaitu Rp4.950.087.016,34.
Balok Beton Bertulang yang Diperkuat dengan Carbon Fiber Reinforced Polymer Wrap saat Dibebani Beban Gravitasi
Authors: Hadi Brian Widyan , Priyosulistyo Henricus , Siswanto Muhammad Fauzie 
Published: June 2021

ABSTRACTInnovation is developed continuously to find an optimal method of strengthening structural components. There are many strengthening methods for reinforced concrete structures. Carbon Fiber Reinforced Polymer Wrap as a flexural strengthening material according to ACI 440.2R was chosen. The research includes gravity load (dead load and live load) as the initial load during test according to SNI 2847-2013 chapter 20. This research examines the strength of the intact beam, strengthened reinforced beam, and failure pattern, respectively, compared to the intact beam's result theoretically and experimentally. The failure test results show that the maximum loads of the experiment beam were similar to the theoretical analysis with a ratio of 0.98 to 1.33. The failure patterns are shear, flexure-shear, spalling and diagonal cracks, and debonding failures. CFRPW can increase the strength and stiffness of the beams. The increase of CFRP beams (BF A and BF B) is 35,27% and 46,24%, respectively. The increase of stiffness ratio of BF A and BF B is 3,48 and 6,62 compared to BK 1. ABSTRAKSebuah inovasi yang terus dikembangkan agar menemukan sebuah metode yang optimal dalam perkuatan komponen struktur balok. Perkuatan balok beton bertulang dapat dilakukan dalam beberapa metode. Carbon Fiber Reinforced Polymer Wrap dipilih sebagai bahan penguat lentur sesuai ACI 440.2R. Penelitian ini meliputi beban gravitasi (beban mati dan beban hidup) sebagai beban awal pada saat pengujian sesuai SNI 2847-2013 pasal 20. Penelitian ini mengkaji kekuatan balok murni, kekuatan balok yang telah diperkuat, pola keruntuhan dan perbandingan antara hasil teoritis dan eksperimental. Hasil pengujian ultimit menunjukkan bahwa balok uji serupa dengan analisis teoritis dengan perbandingan beban maksimum 0,98 dan 1,33. Pola kegagalan adalah retak geser, geser lentur, keretakan spalling dan diagonal serta kegagalan debounding. CFRPW dapat meningkatkan kekuatan dan kekakuan balok. Peningkatan kekuatan BF A 35,27% dan BF B 46,24% terhadap BK 1. Peningkatan rasio kekakuan balok BF A dan BF B bila dibandingkan dengan BK 1 adalah 3,48 dan 6,62.
PERANCANGAN PURWARUPA PEMBANGKIT TERMOELEKTRIK SEBAGAI MEDIA PEMBELAJARAN KONVERSI ENERGI
Authors: Pradana Adlan Bagus , Irawan Fajar , Wisnu Andreas , Saputra Burhan Dwi , Subakti Giri , Yusuf Muhammad , Yunita Thalia Roza 
Published: June 2021

ABSTRACT:Thermoelectric is a device which has the ability to efficiently convert heat energy into electrical energy. The voltage generated by this thermoelectric is low, so that it needs to be amplified in order to utilized. Strengthening is done using a DC Boost Converter. The resulting tool can be used as a medium for learning renewable energy conversion.ABSTRAK:Termoelektrik adalah komponen elektronika yang memiliki kemampuan mengubah energi panas menjadi energi listrik. Level tegangan yang dihasilkan oleh elemen termoelektrik ini bernilai rendah. Agar dapat dimanfaatkan, level tegangan ini perlu melalui proses penguatan terlebih dahulu. Penguatan dapat dilakukan dengan menggunakan DC Boost Converter. Dengan cara seperti ini, termoelektrik dapat dimanfaatkan sebagai pembangkit tenaga listrik. Pada penelitian ini dilakukan perancangan purwarupa pembangkit listrik berbasis termoelektrik yang dapat dipergunakan sebagai media pembelajaran konversi energi terbarukan.
Vocational Curriculum Implementation of the Three Years Program of Electronics Engineering
Authors: Sugiyanta Lipur , Sukardjo Moch , Khairudin M. , Mat Nashir Irdayanti 
Published: June 2021

This study analysed the implementation of the Indonesian Qualification Framework based vocational curriculum in the three years program of an electronics engineering, Faculty of Engineering, Universitas Negeri Jakarta. The analysis was focused on lecturers and students’ views. This evaluation used the model of Context, Input, Process, Product by involving 49 students in the 3rd semester, 6 lecturers, and administration staff. The findings showed that the implemented learning activities using the new curriculum paradigm are reliable. The context analysis indicated the correlation between lecturers’ competence and qualification and the goals of the study program. The input analysis showed that the lecturer's assignment was appropriate and correspond with lecturers’ subject and education background. The process analysis revealed that the learning process was in accordance with the lectures’ planning. In addition, the practicum activities were reportedly consistent with the academic calendar. The product analysis, in the form of courses distribution each semester, suggested that the needs for improvement to fit the new curriculum paradigm design.
Web-Based Learning Media Using Hypertext Markup Language as Course Materials
Authors: Manggopa Hiskia Kamang , Manoppo Christine Takarina Meitty , Togas Peggy Veronica , Mewengkang Alfrina , Batmetan Johan Reimon 
Published: June 2021

Recently, numerous web-based applications with attractive user interface, brand-new and advanced features, and friendly operation are rapidly developed and widely used, particularly in education context. This study aims to produce web-based learning media that are feasible for delivering materials of web programming subject. The course material of this subject is Hypertext Markup Language (HTML).This study is located at Manado State University, at the study program of information and communication technology. The method of this study employs the research and development model. The data were obtained by four questionnaires, including (1) the feasibility testing by the lecturer, (2) the media expert feasibility testing, (3) the materials expert feasibility testing, and (4) the students’ feasibility testing. Based on the experimental results, it can be stated that the developed web learning is considered useful. It can be concluded that the web-based learning media is feasible to be used and effectively improve the quality of learning.
Furniture Construction Skill Gap Analysis among Technical College Teachers in Zamfara and Katsina States
Authors: Mannir Maryam Sanni , Bala Mohammed Maik , Hassan Abdullahi Muhammad 
Published: June 2021

This study identified the practical skills possessed and skills required by furniture construction teachers in Zamfara and Katsina State, Nigeria. Three research questions that sort to determine the skills needs of furniture construction teachers were answered and one hypothesis was tested at 0.05 level of significance. A descriptive survey research design was adopted for the study. The population for the study was 42 teachers. A structured questionnaire was used to gather data from the 42 woodwork furniture construction teachers. The instrument had a reliability coefficient of 0.89 using Cronbach Alpa statistic. Mean and standard deviation was used to answer research questions and a t-test was used to test the hypothesis using the IBM SPSS version 20. The findings of the study revealed that the respondents require skills on the ability to hold a saw with fore-finger straight out on one side of the handle, the ability to follow the “FEWTEL” method in preparing a piece of wood require further training, setting sliding bevel when marking out dovetail joint and selection of the right adhesive according to the purpose and type of wood as well as amount of force the adhesive would be subjected to required skills. It was recommended that; government should provide opportunities for furniture construction teachers to go on further training on the modern furniture construction technology required. The identified skills required by teachers of furniture construction should form the basis for the up-skill workshop to be organized as in-house training.