bluuebunny/crossref_metadata_2025_split huggingface dataset:
Theoretical Analysis of Single-Stage and Multi-Stage Monod Model of Landfill Degradation Through Mathematical Modelling
Authors: Murali Kirthiga , Solayappan Balamurugan , James Visuvasam , Lakshmanan Rajendran , Abukhaled Marwan 
Published: January 2021

Background:
Preventing substantial environmental hazards caused by noxious gases and solutes
from sanitary landfills necessitates adequate regulations that require knowledge of the underlying
mechanisms involved and the effect of various strategies. Mathematical models have been used to understand
the development of landfill gas based on sequential biological growth and certain simple chemical
and physical processes.

Methods:
The single-stage and multi-stage Monod landfill degradation model is based on a coupled system
of rate equations containing a nonlinear term related to Michaelis- Menten kinetics of the enzymatic
reaction. In this communication, an approximate analytical solution of the nonlinear differential equations
is solved using a new approach of the homotopy perturbation method.

Results:
Substrate and biomass concentrations for the single-stage Monod landfill degradation model as
well as biomass, solid, aqueous, acetic, and gases for the multi-stage model are derived for all possible
values of parameters. Theoretical evaluations of the kinetic parameters such as the constant of Michaelis-
Menten, mass-specific growth rate, half-saturation, and the death rate are reported.

Conclusion:
The accuracy of the proposed analytical expressions is validated by direct comparison with
numerical simulations generated by MATLAB. A sensitivity analysis is presented to report the effect of
all parameters on the governing model and the time required to reach the steady-state. The obtained analytical
results are expected to contribute to a better understanding of the model and the effect of parameters
and hence a better designing of experiments.
A coadunation of biological and mathematical perspectives on the pandemic COVID-19: A Review
Authors: Qazi Sahar , Sheikh Kayenat , Faheem Mo , Khan Arshad , Raza Khalid 
Published: January 2021

Background:
Coronavirus disease 2019 (COVID-19) outbreak has created an emergency globally, and social
distancing and isolation is the only solution to prevent its spread. Several countries have announced full lockdown to tackle
this pandemic. The coronavirus family is inclusive of pathogens of both – animal species and humans, encapsulating the
isolated severe acute respiratory syndrome coronavirus (SARS-CoV). Researchers round the globe have been dexterously
working to decode this lethal virus. Many mathematical frameworks have also been depicted which have helped to understand
the dynamics of the COVID-19.

Methods:
This systematic review highlights the virus genomic composition, preliminary phylogenetic analysis, pathogenesis,
symptomatology, diagnosis, and prognosis along with mathematical models of disease transmission and dynamics.

Results:
Our preliminary phylogenetic analysis of the novel coronavirus sequence discerns that although shares its lineage
with SARS, BAT-CoV, Beta-BAT-SARS,however, this protein is highly dissimilar to its ancestors. The widely prominent
amino acid residues found in the protein are alanine (ALA), aspartic acid (ASP), phenylalanine (PHE), leucine (LEU), aspartic
acid (ASP), threonine (THR), valine (VAL), tyrosine (TYR) and asparagine (ASN) that are responsible for its replication
process.

Conclusion:
Research on coronaviruses continues towards developing a strong understanding of the rapidly evolving viral
replication and its transmission between individuals.
PENGEMBANGAN MODEL EVALUASI UNTUK MENINGKATKAN MUTU PENDIDIKAN TEKNIK ELEKTRO
Authors: Supriyadi, M.Pd Edy 
Published: January 2021

Kajian ini dimaksudkan untuk mengembangkan model atau sistem evaluasi yang tepat, dan sesuai untuk diterapkan guna meningkatkan mutu penyelenggaraan pendidikan di program studi Pendidikan Teknik Elektro. Metode pengkajian dilakukan melalui studi literatur, hasil-hasil penelitian yang relevan, dan peraturan perundangan yang berlaku. Pengkajian dilakukan menggunakan pendekatan sistem, terutama pada aspek Input, Proses, dan Output. Hasil pengkajian merekomendasikan kepada program studi Pendidikan Teknik Elektro untuk mengembangkan model evaluasi, terutama evaluasi/penilaian hasil belajar, evaluasi program, dan evaluasi diri. Model evaluasi mencakup: pembentukan/pemantapan tim evaluasi yang bisa dalam satu tim terpadu untuk ketiga jenis evaluasi tersebut, atau tim sendiri-sendiri (terpisah); penyusunan program evaluasi; pengembangan sistem informasi untuk tingkat program studi; sosialisasi kepada semua pihak terkait; penyusunan perangkat/instrumen; pelaksanaan evaluasi yang bersifat sistematis dan berkelanjutan; analisis dan pelaporan, serta pemanfaatan hasil evaluasi untuk meningkatkan mutu penyelenggaraan pendidikan..Kata kunci: Model Evaluasi Pendidikan Teknik elektro
EVALUASI SISTEM PENANGKAL PETIR EKSTERNAL DI GEDUNG REKTORAT UNIVERSITAS NEGERI YOGYAKARTA
Authors: Rohani Rohani 
Published: January 2021

Tujuan penelitian ini adalah untuk mengevaluasi sistem penangkal petir (SPP) eksternal yang telah terpasang dan untuk mengetahui efektifitas sistem penangkal petir konvensional dengan elektrostatis. Dalam penelitian ini metode evaluasi dilakukan dengan metode pengumpulan data dan analisa data. Metode pengumpulan data terdiri dari: 1) Observasi, 2) Pengukuran, 3) Studi pustaka, dan 4) Wawancara. Analisa data terdiri dari: 1) Kebutuhan, bangunan akan proteksi petir, 2) Menentukan radius proteksi, 3) Konduktor penyalur, dan 4) Terminasi bumi. Hasil evaluasi menunjukkan bahwa: 1) Berdasarkan gedung tertinggi gedung Rektorat UNY sangat memerlukan adanya sistem penangkal petir dengan tingkat proteksi petir level III, 2) Penggunaan penangkal petir konvensional dengan metode sudut proteksi masih membutuhkan peningkatan proteksi berupa penambahan batang penangkal petir sebanyak 27 batang, sedangkan penggunaan penangkal petir elektrostatis berdasarkan analisa perhitungan standar NFC 17-102 memiliki radius 100 m, namun sudah mampu melindungi keseluruhan gedung Rektorat UNY dan daerah sekitarnya, dan 3) Konduktor penyalur dan terminasi bumi baik penangkal petir konvensional maupun elektrostatis keseluruhan sudah memenuhi standar. Kata kunci: Penangkal Petir Eksternal, Penangkal Petir Elektrostatis, Penangkal Petir Konvensional
UPAYA PENINGKATAN KEMAMPUAN BERBAHASA INGGRIS MELALUI PROGRAM STUDY VISIT KE LUAR NEGERI
Authors: Muhfizaturrahmah Muhfizaturrahmah , Hermaniar Yulieda 
Published: January 2021

AbstractThis paper depicts the efforts done in order to improve undergraduate of Didactic of Electrical Engineering students’ English competence through series of activities on international study visit (SV) program. The study visit program was done in Germany in which students actively engage with activities conducted using English as international language in four main English competence standard: reading, listening, speaking and writing. This paper is a descriptive study which its data collecting method was done by observation and interview. Both photos and videos were taken as secondary data. The result of the study is presented under the discussion of participants’ responses toward the program as well as the program impact toward their learning attitudes. Keywords: English competence, study visit, didactic of electrical engineering AbstrakPenelitian ini merupakan tulisan mengenai upaya-upaya yang dilakukan sebagai langkah meningkatkan kemampuan berbahasa inggris mahasiswa program sarjana di Jurusan Pendidikan Teknik Elektro melalui serangkaian aktivitas pada program study visit (SV). Program ini dilaksanakan di Jerman dimana mahasiswa terlibat aktif menggunakan bahasa inggris yang meliputi aspek membaca, mendengar, berbicara dan menulis. Penelitian ini menggunakan pendekatan deskriptif dimana gambaran mengenai proses perancangan aktivitas program dan pelaksanaan kegiatan SV dijabarkan secara mendetail. Pengumpulan data dilakukan melalui pengamatan dan wawancara. Foto dan video juga diambil sebagai data sekunder. Hasil dari kajian ini disajikan dalam diskusi terkait respon peserta terhadap program dan pengaruh program terhadap perilaku belajar peserta. Kata kunci: kemampuan berbahasa inggris, study visit, pendidikan teknik elektro
Kelayakan E-modul Berbasis Android Untuk Mendukung Pembelajaran Aplikasi PLC Sebagai Pengendali Mesin Pengisi dan Penutup Botol Otomatis di SMK
Authors: Sukir Sukir 
Published: January 2021

Tujuan penelitian ini adalah untuk mengetahui unjuk kerja dan tingkat kelayakan e-modul berbasis android untuk mendukung pembelajaran aplikasi PLC sebagai pengendali mesin pengisi dan penutup botol otomatis pada Kompetensi Keahlian Teknik Instalasi Tenaga Listrik di SMK N1 Pundong, Bantul. Metode penelitian yang digunakan dalam penelitian ini adalah penelitian dan pengembangan yang mengacu pada model ADDIE menurut Branch. Hasil penelitian menunjukkan telah dihasilkan e-modul berbasis android untuk mendukung pembelajaran aplikasi PLC sebagai pengendali mesin pengisi dan penutup botol otomatis dengan nama Modul PLC TOI, dengan format file .apk, yang memiliki unjuk kerja yang baik dengan ditandai semua menu dapat berfungsi dengan baik. Selain itu produk e-modul tersebut memiliki kelayakan untuk diterapkan dalam pembelajaran pada kategori sangat layak, yang ditandai gabungan skor validasi ahli materi, ahli media dan penilaian siswa sebesar 84,46%.
PENERAPAN MODEL PEMBELAJARAN PROBLEM POSING UNTUK MENINGKATKAN PRESTASI BELAJAR SISWA
Authors: Rahayu Sri , Supriyadi Edy 
Published: January 2021

Penelitian ini bertujuan untuk mengetahui apakah penerapan metode pembelajaran problem posing dapat meningkatkan prestasi belajar kompetensi Mengaplikasikan Rangkaian Listrik siswa kelas X Teknik Otomasi Industri SMK N 2 Depok. Penelitian ini merupakan Penelitian Tindakan Kelas. Penelitian dilaksanakan dalam tiga siklus, siklus I tiga kali pertemuan, siklus II empat kali pertemuan, dan siklus III tiga kali pertemuan. Setiap siklus terdiri dari empat tahap yaitu perencanaan, tindakan, observasi, dan refleksi. Pengumpulan data menggunakan non tes (lembar observasi) untuk mengetahui komponen pendukung pembelajaran dan tes (instrumen pretest-posttest) untuk mengetahui peningkatan prestasi belajar siswa. Analisis data yang digunakan adalah mengumpulkan data, mereduksi data, memaparkan data, dan menyimpulkan data. Pada penelitian ini diketahui bahwa setelah diterapkan model pembelajaran Problem Posing tipe Post Solution Type, kompetensi siswa mengalami peningkatan ditinjau dari hasil pretest-posttest siswa. Siklus I memiliki persentase ketuntasan pretest 0% posttest 28,1%. Siklus II memiliki persentase ketuntasan pretest 0%, posttest 68,75%. Siklus III persentase ketuntasan pretest 0% posttest 75%. Pada observasi terjadi peningkatan dan penurunan pada setiap komponen di setiap siklus.
A Risk Prediction Model Based on Machine Learning for Cognitive Impairment Among Chinese Community-Dwelling Elderly People With Normal Cognition: Development and Validation Study
Authors: Hu Mingyue , Shu Xinhui , Yu Gang , Wu Xinyin , Välimäki Maritta , Feng Hui 
Published: January 2021

Background
Identifying cognitive impairment early enough could support timely intervention that may hinder or delay the trajectory of cognitive impairment, thus increasing the chances for successful cognitive aging.

Objective
We aimed to build a prediction model based on machine learning for cognitive impairment among Chinese community-dwelling elderly people with normal cognition.

Methods
A prospective cohort of 6718 older people from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) register, followed between 2008 and 2011, was used to develop and validate the prediction model. Participants were included if they were aged 60 years or above, were community-dwelling elderly people, and had a cognitive Mini-Mental State Examination (MMSE) score ≥18. They were excluded if they were diagnosed with a severe disease (eg, cancer and dementia) or were living in institutions. Cognitive impairment was identified using the Chinese version of the MMSE. Several machine learning algorithms (random forest, XGBoost, naïve Bayes, and logistic regression) were used to assess the 3-year risk of developing cognitive impairment. Optimal cutoffs and adjusted parameters were explored in validation data, and the model was further evaluated in test data. A nomogram was established to vividly present the prediction model.

Results
The mean age of the participants was 80.4 years (SD 10.3 years), and 50.85% (3416/6718) were female. During a 3-year follow-up, 991 (14.8%) participants were identified with cognitive impairment. Among 45 features, the following four features were finally selected to develop the model: age, instrumental activities of daily living, marital status, and baseline cognitive function. The concordance index of the model constructed by logistic regression was 0.814 (95% CI 0.781-0.846). Older people with normal cognitive functioning having a nomogram score of less than 170 were considered to have a low 3-year risk of cognitive impairment, and those with a score of 170 or greater were considered to have a high 3-year risk of cognitive impairment.

Conclusions
This simple and feasible cognitive impairment prediction model could identify community-dwelling elderly people at the greatest 3-year risk for cognitive impairment, which could help community nurses in the early identification of dementia.
Exome Chip Analyses and Genetic Risk for IgA Nephropathy among Han Chinese
Authors: Zhou Xu-jie , Tsoi Lam C. , Hu Yong , Patrick Matthew T. , He Kevin , Berthier Celine C. , Li Yanming , Wang Yan-na , Qi Yuan-yuan , Zhang Yue-miao , Gan Ting , Li Yang , Hou Ping , Liu Li-jun , Shi Su-fang , Lv Ji-cheng , Xu Hu-ji , Zhang Hong 
Published: January 2021

Background and objectives
IgA nephropathy is the most common form of primary GN worldwide. The evidence of geographic and ethnic differences, as well as familial aggregation of the disease, supports a strong genetic contribution to IgA nephropathy. Evidence for genetic factors in IgA nephropathy comes also from genome-wide association patient-control studies. However, few studies have systematically evaluated the contribution of coding variation in IgA nephropathy.

Design, setting, participants, & measurements
We performed a two-stage exome chip–based association study in 13,242 samples, including 3363 patients with IgA nephropathy and 9879 healthy controls of Han Chinese ancestry. Common variant functional annotation, gene-based low-frequency variants analysis, differential mRNA expression, and gene network integration were also explored.

Results
We identified three non-HLA gene regions (FBXL21, CCR6, and STAT3) and one HLA gene region (GABBR1) with suggestive significance (P

meta
<5×10−5) in single-variant associations. These novel non-HLA variants were annotated as expression-associated single-nucleotide polymorphisms and were located in enhancer regions enriched in histone marks H3K4me1 in primary B cells. Gene-based low-frequency variants analysis suggests CFB as another potential susceptibility gene. Further combined expression and network integration suggested that the five novel susceptibility genes, TGFBI, CCR6, STAT3, GABBR1, and CFB, were involved in IgA nephropathy.

Conclusions
Five novel gene regions with suggestive significance for IgA nephropathy were identified and shed new light for further mechanism investigation.
Canadian Journalism Programs’ Response to Local News Poverty: The Challenges of Doing More
Authors: Haney Sally , Paskey Janice 
Published: January 2021

Background This study is the first to examine Canadian postsecondary journalism programs as generators of local news. Motivated by growing local news poverty in Canada, the study investigated local news terrain from the vantage point of journalism faculty involved in program-based publications. Analysis Survey results from faculty based in 22 English language Canadian universities, colleges, and technical institutes revealed active local news publishing environments, some of which included collaborations with media and non-media partners. Conclusions and implications While survey and focus group data showed strong faculty interest in expanding local news contributions by Canadian journalism students, participants also identified the pragmatic, economic, and pedagogical challenges of doing more.
Methylcobalamine (Vitamin B12): Water Soluble Vitamin with Various Pharmacological Aspect
Authors: Yadav Roopesh Kumar , Mishra Sudhanshu , Jain Deepti 
Published: January 2021

Vitamin B12 is a water-soluble vitamin that plays a key role in the brain's proper functioning and nervous system, in blood flow, and in reducing weakness and tiredness. In their food, most people get adequate vitamin B12, but in some health conditions (e.g. inadequate sleep, stomach/intestinal disorders, inflammation, cancer), there could be a shortage. If left unchecked, severe Vitamin B12 deficiency results in anemia and nerve damage. Vitamin B12 deficiency is typically treated using parenteral and oral dosage formulations, but absorption and compliance problems are involved with these routes of administration. Most significantly, the function of this missing intrinsic factor has been shown to assist in vitamin B12 absorption and a deficiency known as pernicious anaemia. Vitamin B12 is only partially absorbed when delivered by mouth to patients with pernicious anemia, but hematologically re-absorbed in patients with pernicious anemia. Parenteral administration of the extrinsic element will treat pernicious anaemia satisfactorily. There are several roles and advantages of vitamin B 12 in the human body with therapeutic effects also.
Keywords: Water Soluble Vitamins, Methylcobalamine, Vitamin B12, Pernicious Anaemia.
Dampak Penyaluran Zakat Produktif Terhadap Pemberdayaan Ekonomi Mustahik (Kajian pada Lembaga Keuangan Mikro Syariah Baitul Mal Aceh)
Authors: Juliani Juliani 
Published: January 2021

The productive distribution of zakat is expected to empower mustahik to accelerate poverty reduction. Therefore, Baitul Mal Aceh has formed Productive Zakat Management Unit which was later developed into Sharia Microfinance Institution (LKMS). The institution aims to empower the economy of the poor through productive distribution of zakat in the form of interest-free financing (Qardhul Hasan). Hence, it is necessary to conduct a comprehensive study to discover to effect of the productive zakat on economic empowerment of mustahik. Specifically, the purpose of this study is to investigate: 1) the distribution of productive zakat (X), 2) economic empowerment of mustahik (Y), 3) the effect of productive zakat on economic empowerment of mustahik at LKMS Baitul Mal Aceh. This study performed regression equation method Y = a + bX. The data was collected by distributing questionnaires and there were 160 respondents chosen by using convention sampling technique. The results of study proved that LKMS Baitul Aceh has a good achievement in distributing productive zakat through utilization, target, and distribution. In term of economic empowerment of mustahik, the improvement is needed through training, business managing, and assisting. The distribution of productive zakat (X) have a significant effect on economic empowerment of mustahik (Y) as tscore (3.637) >ttable (1.97509) and F score (13.231) >F table (3.9). In addition, p value (Sig) of 0.0000 is below alpha 5% proofing that hypothesis H1 is accepted which means there is a significant effect of the distribution of productive zakat on economic empowerment of mustahik at LKMS Baitul Mal Aceh. The regression equation obtained for Y = a + bX is Y = 55.511 + 0.149Y. The equation implies that the changes of 0.149 for dependent variable (Y) result from 1 point changes in the independent variable (X).
FRACTION CIPHER: A WAY TO ENHANCE STUDENT ABILITY IN ADDITION AND SUBTRACTION FRACTION
Authors: Setambah Mohd Afifi Bahurudin , Jaafar Anis Norma , Saad Mohammad Ikhwan Mat , Yaakob Mohd Faiz Mohd 
Published: January 2021

Learning the concept of fractions can be one of the most difficult skills to master for primary school students. Fractions are also seen to affect other mathematical knowledge, such as algebra. Researchers have introduced an innovation called Fraction Cipher to help students learn fractions. Fraction Cipher is an innovation in the arena of education that involves learning the Malay language and Mathematics. Design research is used as the research method to solve this problem consisting of three phases: preliminary design, teaching experiment, and retrospective analysis. The instruments used are fraction cipher, fraction test, and observation checklist. The results of the pair's comparative study by controlling the type I error using the Bonferroni method show that the mean values of the mathematical achievement of the experimental group and the control group are significantly different. The results show that Fraction Cipher impacts students to understand and master the concept of fractional addition and fraction subtraction operations. This research also explains the "Sake-Beda" strategy to make it easier for students to solve fractional operation problems. Besides, this study also shows the change in students' attitudes from negative to more positive. Thus, students understand and are more motivated to learn the concept of fractions.
Primary and Preventive Care of Women
Authors: Henrich Janet B. 
Published: January 2021

Women’s health can be defined as diseases or conditions that are unique to women or that involve gender differences that are particularly important to women. This definition acknowledges the increasing scientific evidence supporting a focus on sex and gender and expands the concept of women’s health beyond the traditional focus on reproductive organs and their function. Over time, the definition has come to include an appreciation of wellness and prevention, the interdisciplinary and holistic nature of women’s health, the diversity of women and their health needs over the life span, and the central role of women as patients and as active participants in their health care. This broader interdisciplinary perspective has important implications for clinicians providing care to women. In addition to understanding basic female physiology and reproductive biology, clinicians need to appreciate the complex interaction between the environment and the biology and psychosocial development of women. When dealing with conditions that are not specific to women, clinicians need to be aware of those aspects of disease that are different in women or have important gender implications. The ability to apply this information requires that clinicians adopt attitudes and behavior that are culturally and gender sensitive. Figures visualize female life expectancy, age-adjusted death rates, female breast cancer incidence and death rates, trends in female cigarette smoking, and the U.S. Preventive Services Task Force guidelines for preventive primary care in women.
This review contains 5 figures, 6 tables and 56 references.