bluuebunny/crossref_metadata_2025 huggingface dataset:
PHÂN LẬP VÀ TUYỂN CHỌN XẠ KHUẨN CÓ KHẢ NĂNG SINH CÁC HỢP CHẤT CÓ HOẠT TÍNH CAO
Authors: NGUYỄN THỊ DIỆU HẠNH  , HỨA TRƯỜNG CHINH  , ĐẶNG BÍCH NGÂN  , NGUYỄN THỊ THANH THÚY  , NGUYỄN NGỌC ẨN  , PHẠM TẤN VIỆT
Published: March 2022

Xạ khuẩn có vai trò quan trọng trong việc sản xuất enzyme ngoại bào và các hợp chất chuyển hóa thứ cấp có hoạt tính sinh học cao. Việc tìm kiếm các chủng xạ khuẩn có hoạt tính sinh học nhằm ứng dụng vào các lĩnh vực khác nhau là cần thiết. Trong nghiên cứu này, từ 20 mẫu đất thu nhận ở 2 tỉnh Bến Tre và Long An, 40 chủng xạ khuẩn đã được phân lập và làm thuần. Hơn 50% các chủng xạ khuẩn khảo sát có khả năng sinh tổng hợp ít nhất 1 trong 4 loại enzyme ngoại bào như amylase, cellulase, protease và chitinase. Dịch nuôi cấy của 17 chủng xạ khuẩn thể hiện hoạt tính đối kháng với ít nhất 1 trong 4 chủng vi khuẩn kiểm định: Bacillus subtilis, Bacillus cereus, Escherichia coli và Staphylococcus aureus và 24 chủng xạ khuẩn có khả năng đối kháng ít nhất 1 trong 7 chủng nấm mốc kiểm định: Fusarium oxysporum, Fusarium equiseti, Neoscytalidium dimidiatum, Aspergillus sp., Aspergillus fumigatus, Colletotrichum siamense và Penicillium chermesinum. Hai chủng xạ khuẩn CNXK 3 và CNXK 72 đã được định danh và được xác định lần lượt thuộc chi Amycolaptosis và Streptomyces. Nghiên cứu này cho thấy tiềm năng ứng dụng xạ khuẩn có hoạt tính sinh học trong sản xuất enzyme công nghiệp, trong các chế phẩm đối kháng với vi khuẩn gây bệnh và kiểm soát nấm bệnh trên cây trồng, góp phần bảo vệ môi trường bền vững và sức khỏe con người.
SNSF Datastory - Using SNSF Data: A Sustainable Example
Authors: Jorstad Anne
Published: March 2022

The SNSF publishes a substantial amount of data about its research grants. This data is available to everyone, to discover trends in science, or dig deep into specific topics of interest, such as analysing sustainability research.
Effect of Unit Cell Height on the Ballistic Performance of the Body-Centered Lattice Structures
Authors: KAYA Oktay , HAFIZOĞLU Hakan , BABACAN Nazım
Published: March 2022

Lattice structures, produced by metal additive manufacturing technology, can be a potential alternative in armor applications, which are important parts of defense technologies due to their shock wave damping, energy absorption and light-weight properties. Despite the fact that the protection of metal lattice structures against explosives has been frequently investigated in the literature, their perforation performance is rarely studied. In this research, numerical ballistic penetration tests were carried out with Johnson-Cook strength and failure model parameters by using LS-DYNA software. AlSi10Mg alloy was chosen as a lattice material, which has high energy absorption ability. Both width and length were chosen as 4 mm for the body-centered lattice structure, while eight different cell height (3, 4, 5, 6, 7, 8, 9 and 15 mm) were used as unit cell parameters. The results show that the ballistic performance of lattice structures could be improved by optimizing the unit cell height for the body-centered lattice structures.
New Approaches on Urban Agriculture: A Case Study in Ataköy
Authors:   Institute of Science and Engineering Ozyegin University, Istanbul, Turkey, Duman Ezgi , Sat Beyza ,   Faculty of Architecture and Design, Ozyegin University, Istanbul, Turkey
Published: March 2022

In today's world, cities are developing and expanding rapidly. One of the critical factors of this growth is migration from rural areas to cities. As migration to the urban areas increases, the city needs to grow its resources to be sufficient. According to the 2019 statements made by TUIK (Türkiye İstatistik Kurumu), the city that received the most immigration in Turkey was Istanbul with a rate of 42.5%. Urban agriculture is enhancing the capacity of urban resilience. This study aims to examine the concept of urban agriculture in the context of sustainability and examine practical examples especially from Ataköy, Bakırköy in a comparable style. Idle industrial areas or vacant lots and urban agriculture potentials are examined based on the R-URBAN strategy through methodologies of literature review and feasibility and field studies that carried out in Ataköy. A scenario produced and an implementation model has been developed for Ataköy in the context of urban agriculture at the basis of R-URBAN strategy.
Processo formativo envolvendo professoras dos Anos Iniciais que ensinam Matemática e uma coordenadora pedagógica no contexto da pandemia da Covid-19
Authors: Utimura Grace Zaggia , Curi Edda
Published: March 2022

Este artigo apresenta a potencialidade de um processo formativo e suas reflexões, envolvendo quatro professoras dos Anos Iniciais e uma coordenadora pedagógica da Rede Estadual de Ensino de São Paulo, com base nas ações iniciadas em junho de 2021. Faz parte de uma pesquisa em nível de Pós-Doutoramento. Utilizamos a abordagem qualitativa, com análise documental permeada pelo estudo de dois volumes de materiais curriculares de Matemática da Rede produzidos para o momento pandêmico. Considera que a formação proporcionou contribuições para o conhecimento curricular docente e o ensino de Matemática. Identifica, ainda, a necessidade de um aprofundamento nas discussões em algumas escolas sobre os materiais de Matemática produzidos pela Rede. Além disso, foi apontado pelas participantes que o uso das ferramentas tecnológicas nas escolas e nas formações pós-pandemia é importante, desafiador e contribui na rotina entre o trabalho e as horas de estudo.
Simulation of Disturbance Observer-Based Bone Tissue Change Prediction Approach for Orthopedic Drills
Authors: TORUN Yunis
Published: March 2022

Orthopedic drills are currently used for various operations in surgical fields such as orthopedics, ear, nose, and throat surgery. The path that orthopedic drills travel through the tissue is controlled manually by surgeons, and manual control leads to the risk of damaging areas such as nerves and tissues. In our study, an innovative approach is presented against existing drill designs and breakthrough detection problems. In the proposed model, the change in the load torque and the change in friction force caused by the tissue change in the drilling path are considered as a disturbance effect, and a disturbance observer has been developed that allows these disturbances to be observed. Observation of the disturbance effects allows the perception of the hardness of tissue change during drilling since it gives the change of load torque changes and friction coefficient, which cannot be measured under normal operation. The performance of the proposed approach has been proven by simulation study.
Investigation of Nonlinear Wave Solutions for Fusion and Fission Phenomenas
Authors: AKTÜRK Tolga , ÇAKMAK Volkan
Published: March 2022

In this study, wave solutions of the (3+1) dimensional Jimbo-Miwa equation and two different phenomena of the solution, fusion and fission, are obtained using the modified exponential functionmethod. In order to get more possible solutions, two different cases are investigated due to the nature of the modified exponential function method. When the resulting solutions are analyzed, trigonometric, hyperbolic and rational functions are obtained. It was checked whether the solution functions found by the Wolfram Mathematica software provided the (3+1) dimensional potential Jimbo-Miwa equation. Two and three dimensional graphs, contour and density graphs of the solution function were get by determining the appropriate parameters.
METHODOLOGY FOR DESIGNING A TRACTION MOTOR FOR TRANSPORT
Authors:   STRIM LLC, STASENKO Igor S. , HERASIMENKO Nikita V. ,   STRIM LLC, SAVITSKI Viktor S. ,   STRIM LLC
Published: March 2022

The article is devoted to the design of an asynchronous traction motor intended for work as part of an electric drive of vehicles: electric vehicles, electric buses, trams, trolley buses. The object of the study is a medium-sized bus. The required traction characteristics of the electric motor are constructed, the nominal and limiting characteristics of the increased torque. The dynamic characteristics have been built for a bus with a mechanical transmission and a diesel engine, as well as for a bus with an electric motor. A method is proposed for designing an electric motor based on mathematical modelling of its operation in the software complexes ANSYS RMxprt and INFOLYTICA MAGNET. According to this technique, the main parameters of the electric motor are determined. The results of modelling are given, graphs of the criteria dependence on the electric motor parameters. Experimental studies of the electric motor have been carried out. The results of mathematical modelling are compared with experimental ones. It was found that the discrepancy between the results of experimental and theoretical studies is no more than 5 %.
INNOVATIVE DEVELOPMENTS OF THE NATIONAL ACADEMY OF SCIENCES OF BELARUS IN THE FIELD OF DRIVE MECHANICS. PART 2. LIFETIME MECHANICS OF MACHINES AND ARCHITECTONICS OF INFORMATION MODEL
Authors:   Joint Institute of Mechanical Engineering of the NAS of Belarus, PODDUBKO Sergey N. , ALGIN Vladimir B. ,   Joint Institute of Mechanical Engineering of the NAS of Belarus, ISHIN Nikolay N. ,   Joint Institute of Mechanical Engineering of the NAS of Belarus, SHIL’KO Sergey V. ,   V.A. Belyi Metal Polymer Research Institute of the NAS of Belarus
Published: March 2022

The article considers innovative developments in the field of drive mechanics of the Joint Institute of Mechanical Engineering of the NAS of Belarus in cooperation with the V.A. Belyi Metal-Polymer Research Institute of the NAS of Belarus and other organizations. The main attention is paid to the results noted in the TOP-10 competition of the NAS of Belarus, in which the creative team of specialists of the Joint Institute of Mechanical Engineering of the NAS of Belarus and the V.A. Belyi Metal Polymer Research Institute of the NAS of Belarus became the winner, as well as the monograph “Gears and transmissions in Belarus: design, technology, evaluation of properties”, which became a prize-winner in the All-Russian competition named after Ivan Fedorov with international participation in 2020 in the nomination for the best publication on research work. New results obtained by the authors in 2020–2021 on the subject under consideration are also presented. The article includes the provisions of the lifetime mechanics of machines developed at the Joint Institute of Mechanical Engineering of the NAS of Belarus, including the definition of strength as a lifetime; ideas about the reliability of technically complicated items; description of the developed drive diagnostics system; the concept of lifetime consumption in the aspect of assessing the individual condition of a multicomponent item, as well as issues of forecasting and managing the condition of a technically complicated item.
Review: Suspended Sediments and their interaction in Water Supply Chain Network
Authors: Damian Dibie, Chidubem , Sunday Egbiki
Published: March 2022

There have been several problems caused by sediments which have never been addressed before now in the water supply chain and have therefore been overlooked as not having sizable consequences; however, they actually do and these problems over a period have demanded the attention of sediment in urban water cycle to be given due scrutiny to understand the connection between sediments and the derivative problems in the water supply chain. This review article examines the problems associated with sediments along the water supply chain from the drainage basin, water bodies, treatment plants, water distribution system and end consumers. More so, this review article proposes policies that can be adopted to reduce the influx of sediment in the various stages of the water supply chain.
Hepatitis B, C and TTV virus infection in highly trained athletes
Authors: Melnikova LI , Kozhanova TV , Ilchenko LYu , Morozov IA , Soboleva NV , Nguyen Thi-Hanh , Kruglova IV , Gordeychuk IV
Published: March 2022

Biomedical support is aimed at provision of the athletes' training at various stages of the training and competition process. Withholding of access to this process due to health problems resulting from hepatitis virus infection is a demanding task. The study was aimed to assess the detection rate of the hepatitis B virus, hepatitis C virus and TT virus infection markers in highly trained athletes. A total of 384 blood serum samples were collected from 240 males and 144 females aged 14–49 (athletes engaged in playing sports, precision sports, technical sports, etc.) within the framework of the multicenter open-label cross-sectional clinical trial. All athletes answered a questionnaire, which included demographic information, characteristics of sports, information about the infection risk factors, information about the fact of past acute viral hepatitis and vaccination. Markers of infection with hepatitis B virus, hepatitis C virus and TTV were identified in blood serum by enzyme immunoassay. HbsAg was detected in two surveyed athletes. Anti-HBcore (surrogate marker of latent HBV infection) was detected in 7% of samples (27/384); 1% of athletes (4/384) had a positive hepatitis C virus total antibody test (anti-HCV). Аnti-HCV in combination with anti-HBcore was detected in one female athlete (14 years of age, tennis player). DNA of TTV, TTMDV and TTMV was detected in blood serum samples of 89.1%, 83.1% and 85.4% of athletes, respectively. High detection rate of the hepatitis virus markers was observed.
Road Accident Scenario: A Spatio-Temporal Analysis of Chhattisgarh State, India
Authors:   Research scholar, S.o.S. in Geography, Pt. Ravi Shankar Shukla University, Raipur, Chhattisgarh, Mondal Soumen
Published: March 2022

This paper has been carried out the road accident of district wise in Chhattisgarh State, India. The main analysis of this paper is spatio – temporal distribution of road accidents, death, and injured person by vehicles in the state according to month, diurnal, different types of vehicles, roads, and area wise. January is the most accidental, death, and injured month during the year 2018-2020. The diurnal variation of road accidents shown at evening to night time from 6-9 PM is the maximum. At the evening time the most of people have faced low visibility problems and the mainly in cold winter season. The paper has been Analysis of vehicles wise, the two-wheeler is the highest road accident then four-wheelers shows at because maximum people traveling from one place to another place through this vehicles. According to the road, wise, rural, and district roads have been maximum shows in various districts of the Chhattisgarh state. The rural area indicates more accidents as compared to the urban area because 76.76% of people live in the rural area. Road accidents are increasing day by day due to the high growth rate of the population with the rapid increase of registered motor vehicles but road density and road space have not increased. The district wise accident severity indexes have been shown the maximum cases in Kondagaon, Jashpur district, and the high accident risk district in Raipur. Raipur, Bilaspur, and Durg district shows the maximum road accident in the state. All over India faced COVID-19 pandemic situation from March 2020 and shows the minimum road accident and deaths but an injured person is increased. The government urgently takes appropriate action and needs to improve road safety for this worsening situation.
Teacher's Actions in the Development of Religious Deaf Students at SLBKuncup Mas Banyumas
Authors:   State Islamic University Prof. K.H Saifuddin Zuhri, Purwokerto, Indonesia, Affandi Rahman
Published: March 2022

This research aims to describe and analyze the actions of teachers in the development of the religiousness of visually impaired students in SLB Kuncup Mas Banyumas. This type of research is field research with a qualitative approach. The subjects of the study were blind classroom teachers, principals, parents or guardians of students, and blind students. The analysis techniques used are qualitative descriptive with stages of data reduction, data display, and conclusions. Data collection uses interview observation techniques and documentation. The results showed that teacher learning actions that support the development of student religiousness can be categorized into four important parts, namely teacher structuring, teacher soliciting, student responding, and teacher reacting. Teacher structuring is manifested by the behavior of praying and praising the greatness of Allah SWT. Teacher soliciting is manifested with teachers appearing very friendly and humanist. Student response is indicated by some students who carry out tasks given by teachers and some others delay assignments. And teacher reacting is shown by providing punishment that educates by communicating with parents or siblings, and putting forward praise for a conducive learning process.
On Syncretic and Polyfunctional Properties of Uzbek and English Participles
Authors:   PhD, Doctoral student of Andijan State University, Ganieva Dildora
Published: March 2022

This research aims at studying syncretic properties of participles, and exploring their polyfunctional realization. It is a comparative study of participles in Uzbek and English languages, that belong to different language families, the Altaic and the Indo-European correspondingly, and perhaps, therefore, the studied units in Uzbek are contextually oriented, and in English, they are inherently oriented. The research employs a qualitative method using comparative and componential analyses. The samples in the study are taken from written sources. The findings of the research proves that participles, as being non-finite forms of the verb and therefore considered syncretic units, perform various functions depending on the context they occur. This polyfunctional realization is characteristic to the both languages, although, several functions of participles in the one language are different from participles in the other language.
A Discussion on University Students’ Online Shopping Behaviors Amid the COVID-19 Pandemic
Authors: Chen Jui-Lung , Prommetta Siriwat
Published: March 2022

Abstract

With the convenience of the internet, consumers can easily purchase various goods, such as clothing, cosmetics, and general appliances, through various online channels (such as websites, shopping APPs, Facebook Shop, and Line Shopping). In addition, the payment methods are diverse, and consumers can choose online payment, cash on delivery, etc. to pay their shopping bills. This study aims to explore the shopping behaviors of students from Thailand Bangkok University amid the COVID-19 pandemic, examine the effect of COVID-19 on online shopping, and determine how to improve online stores, in order to meet customers’ needs and satisfaction. This study took 395 students from Thailand Bangkok University as the samples, adopted Smart PLS 3.0 to perform path analysis testing of the research model and used Bootstrap to verify the independent samples t-test. The results of this study are expected to be a reference for the operations of online shopping, as well as for researchers in future relevant studies.

JEL classification numbers: D12, M31.
Keywords: Online shopping behaviors, Customers’ needs and satisfaction, COVID-19.
Impactos da participação em programas de incentivo à docência na formação inicial e desenvolvimento profissional de professores de Educação Física atuantes na educação básica
Authors:   , Castro Caroline Marques de
Published: March 2022

Entendendo que o processo formativo carrega marcas de diferentes contextos e que a qualidade do trabalho docente se relaciona com esse processo, o objetivo do presente estudo foi analisar e compreender os impactos da participação em programas de incentivo à docência, na formação inicial e no desenvolvimento profissional de professores de Educação Física, a partir da análise das trajetórias pessoal e profissional dos mesmos. Foi adotada uma abordagem metodológica qualitativa do tipo descritiva. Os dados foram coletados a partir de entrevista semiestruturada e aplicação de questionário, tendo como participantes professores licenciados em Educação Física pela Universidade Federal de Viçosa – UFV, que participaram ou participam de programas de incentivo à docência, nas condições de bolsistas ou supervisores e que estejam atuando na Educação Básica. A análise dos dados foi realizada através do método de Análise de Conteúdo. A partir dos dados obtidos, identificou-se primeiramente a participação majoritária de mulheres, uma acentuada faixa temporal que distancia o processo formativo entre os professores e certa intensificação do trabalho docente. Observou-se também que as percepções dos participantes em relação à docência e à Educação Física modificaram-se ao longo do processo formativo, bem como influenciaram na escolha e permanência dos mesmos na carreira docente. Ficou evidente que a prática esportiva esteve presente nas aulas de Educação Física da maioria dos participantes e que houve a influência de terceiros na escolha pela docência em Educação Física. Verificou-se que as motivações tanto para o ingresso, quanto para seguir na carreira docente em Educação Física pouco valorizam a classe. Entretanto, notou- se forte interesse formativo dos participantes em se vincularem aos programas de incentivo à docência. Ademais, percebeu-se que as vivências nos programas influenciaram no processo de construção identitária dos professores, auxiliando no processo de reconstrução de novas percepções sobre a docência em Educação Física. Conclui-se que a participação nos programas de incentivo à docência impactou a formação inicial e o desenvolvimento profissional de professores de Educação Física, ao possibilitar que eles alterassem suas percepções pregressas em relação à docência em Educação Física, construindo uma percepção mais crítica e ampliada da classe a partir das vivências nos programas. Palavras-Chave: Formação de professores. Trajetórias. Docência. Educação Física.
The MOAN (Musculo-Osteo-Arthro-Neuropathic) syndrome
Authors: Sanjay Kalra  , Vijay Kumar  , Nitin Kapoor
Published: March 2022

We share the concept of a multisystemic syndrome which affects the muscle, bone, joints and nerves, in varying manners. The MOAN (musculo-osteo-arthro-neuropathic) syndrome highlights the close relationship between these four organ-systems, and their contribution to each other's health and disease. The mnemonic MOAN also underscores the discomfort and pain associated with the condition and encourages health professionals to address these patients in a holistic manner, rather than just addressing one of the components.

Keywords: Arthritis, Diabetes, Type 2 diabetes, Endocrinology, Geriatrics, Neuropathy, Osteoarthritis, Osteoporosis, Peripheral neuropathy, Sacropenia.
ARTICLES Panjang Vertebra dan Indeks Massa Tubuh sebagai Prediktor Hipotensi Pasca Anestesi Spinal untuk Seksio Sesarea
Authors:   Department of Anesthesiology and Intensive Care, Faculty of Medicine Universitas Gadjah Mada/Dr. Sardjito Hospital Yogyakarta, Indonesia, Aditya Wirawan, Angga , Uyun Yusmein , Fajar Apsari Ratih Kumala , Sudadi Sudadi , Mahmud Mahmud ,   Department of Anesthesiology and Intensive Care, Faculty of Medicine Universitas Gadjah Mada/Dr. Sardjito Hospital Yogyakarta, Indonesia
Published: March 2022

Latar Belakang: Hipotensi sering terjadi pada anestesi neuraksial yang dapat menyebabkan gangguan perfusi uteroplasenta, hipoksia fetus, asidosis, dan cedera neonatus. Hipotensi berat dapat menyebabkan penurunan kesadaran, aspirasi pulmonal, henti napas, hingga henti jantung. Panjang vertebra dan indeks massa tubuh dapat menjadi prediktor hipotensi pasca anestesi spinal pada seksio sesarea (SC) karena ada penelitian yang mendapatkan hubungan panjang vertebra dan indeks massa tubuh dengan ketinggian blok sensorik dan pemberian vasopressor. Tujuan: Untuk mengetahui peran panjang vertebra dan indeks massa tubuh sebagai prediktor kejadian hipotensi pasca anestesi spinal pada SC. Subjek dan Metode: Penelitian observasional prospektif dengan desain cross sectional pada 72 ibu hamil status fisik ASA 1 dan 2 yang akan dilakukan SC dengan anestesi spinal. Hipotensi didefinisikan sebagai penurunan tekanan darah sistolik >20% dari pengukuran awal setelah dilakukan anestesi spinal sampai menit ke 20. Hasil: Panjang vertebra tidak menunjukkan perbedaan yang bermakna secara statistik (p=0,076), sedangkan indeks massa tubuh menunjukkan perbedaan yang bermakna secara statistik (p=0,0001).
Community Empowerment in Efforts to Prevent and Transmission of HIV/ AIDS in Sidoarjo
Authors: Wardani Erika Martining , Nugroho Riezky Faisal
Published: March 2022

HIV / AIDS is a disease that continues to grow and become a global problem that is sweeping the world. The prevalence of HIV cases according to WHO (2015) shows, the number of people with HIV numbered 17,325 people and AIDS was recorded at 1,238 people. Therefore, people need to know about HIV / AIDS and its dangers so as to be able to prevent the transmission of the disease properly, it is necessary to provide appropriate health education to overcome these problems. This community service activity aims to increase public knowledge about HIV / AIDS and the prevention and transmission of HIV / AIDS. The level of public knowledge is measured by conducting a pre-test by filling out a questionnaire before being given health education and post-test after being given health education. The level of mother's knowledge can be measured by comparing the results of pre-test and post-test. Based on the pre-test results followed by 50 respondents. The statistical test results obtained p = 0.001, meaning that there is a significant difference between public knowledge before and after being given health education about the prevention and transmission of HIV / AIDS. The results of community service are expected to improve the health status in the Jemirahan Village community, Jabon District, Sidoarjo Regency, especially for the prevention and transmission of HIV / AIDS.
Cultivation of Pharmaceutical Ethics and Pharmaceutical Skills of Pharmaceutical Students Before Internship
Authors: Hu Li
Published: March 2022

Cultivating students' moral and practical skills is an important teaching content in pharmacy teaching. The internship stage is the last training stage for the basic practical skills of pharmaceutical students. Before the internship, students should understand the rules and regulations of the internship unit, make clear the contents and objectives of the internship, strengthen the basic skills training of four pharmacy majors, which are prescription preparation, drug analysis and inspection and drug maintenance, and develop good pharmaceutical ethics.
A Study of Time Series Forecasting Enrollments Using Fuzzy Interval Partitioning Method
Authors: Hanif Rabia , Mustafa Saima , Iqbal Shafqat , Piracha Sajawal
Published: March 2022

A time series is a sequence of elements with numerical data in sequential order and having regular intervals. Time series are used in statistics, enrollments, signal processing, econometrics, mathematical finance and weather forecasting, etc. It helpsus to forecast and predict the time series data in different domains. There are many methods to forecast the enrollments in literature which have large applications and are presented in the field of statistics and econometrics. One of the robust methods, we used in our research is moving average. It helps to forecast and predict the data whenever the fuzziness occurs in time series data, which is not appropriate in crisp time series forecasting. To get rid of this problem, the fuzzy interval partitioning method proved to be more appropriate to generate accurate results. This research will focus to overcomethe failure of the crisp method and to show the use of a fuzzy interval partitioning method. The fuzzy interval partitioning methodis different from another interval partition schemes because it specifies the linguistic values rather than numerical values. It is also used todeal with uncertain conditions. So, fuzzy interval partitioning improves data utilization and also calculate the higher predicted accuracy rate. Besides this research, we use a quantitative method and a fuzzy moving average with the interval partitioning method. Then we compare the efficiency of moving average model and moving average with fuzzy interval partitioning method for forecasting the enrollments.
 
Received: 15 January 2022 | Revised: 8 March 2022 | Accepted: 16 March 2022
 
Conflicts of Interest
The authors declare that they have no conflicts of interest to this work.
Stability of Fe(III) and Sn(IV) Metalloporphyrins Adsorbed on Cation-Exchanged Montmorillonite
Authors: Hassen Jasim , Silver Jack
Published: March 2022

The iron(III)tetraphenylporphyrin chloride Fe(III)TPPCl, iron(III)tetra-naphthylporphyrin Fe(III)TNPCl, μ-oxo-bis[tetraphenylporphyriniron(III)] [(Fe(III)TPP)2O], μ-oxo-bis[tetranaphthylporphyriniron(III)] [(Fe(III)TNP)2O], tin(IV)tetraphenylporphyrin chloride Sn(IV)TPPCl2 and tin(IV)tetra-naphthylporphyrin Sn(IV)TNPCl2 complexes were all found to be adsorbed onto the montmorillonite MMT clay without demetallation. The evidence from the visible absorption and diffuse reflectance spectra all showed that the species present on the montmorillonite are the metallated form. Also the evidence from Mossbauer spectroscopy confirm these findings. The only process that occurs is that the dimeric form of the iron complexes underwent transformation to the monomeric form. The clay-complex systems were characterized using visible absorption spectra, diffuse reflectance spectra, X-ray diffraction, Mossbauer spectra and Electron microscopy.

HIGHLIGHTS

Fe(III)TPPCl, Fe(III)TNPCl, Sn(IV)TPPCl2, and Sn(IV)TNPCl2 porphyrin complexes adsorbed onto the montmorillonite clay without demetallation

The dimeric forms of iron porphyrin complexes [(Fe(III)TPP)2O] and [(Fe(III)TNP)2O are converted to the monomeric form when adsorbed on montmorillonite clay

The weak acidity of montmorillonite clay does not have the ability to cause demetallation of the metallo complexes of porphyrin
Formação continuada de professores de matemática para o uso pedagógico de tablets e smartphones:
Authors: Luiz Learcino dos Santos , De Sá Ricardo Antunes
Published: March 2022

Apresentamos neste artigo um resumo de uma pesquisa de doutorado realizada no programa de pós-graduação da UFPR (Universidade Federal do Paraná) no período de 2015 a 2018. Nesta pesquisa realizamos uma pesquisa-ação com o intuito de analisar, avaliar e encontrar respostas à possíveis problemas de uma rede municipal de ensino que aderiu ao programa um tablet por aluno. Após avaliarmos que estes professores possuíam uma lacuna em sua formação para o uso de TMSF (tecnologias móveis sem fio – tablets e smartphones), empreendemos um curso de formação continuada com o objetivo de levar conhecimentos teóricos e práticos da teoria do mobile learning. Dentro da pesquisa proposta tivemos como uma hipótese que ao adquirir o conhecimento teórico e prático da teoria do mobile learnig, estes professores teriam sua ação pedagógica transformada para uma ação pedagógica inovadora. No texto deste artigo trazemos importantes teorias sobre a formação continuada de professores, a teoria do mobile learning e apresentamos nossa ideia de ação pedagógica inovadora. Terminamos o texto com um exemplo de um projeto de ensino de matemática criado por um dos professores cursista, onde usa tablets e smartphones em um ambiente de sala de aula invertida.
On the issue of caterpillar trains controllability evaluation at the design stage using a complex of natural-mathematical modeling
Authors: Evseev K. B. , Kositsyn B. B. , Kotiev G. O. , Stadukhin A. A.
Published: March 2022

Introduction(problemstatement and relevance).The insurance of the required safety level is getting more relevant in connection with the intensive implementation of remote control systems being developed for vehicles with varying degrees of motion autonomy. When transporting bulky and heavy loads off-road by remote-controlled tracked trains it is advisable to use the methods of full-scale mathematical modeling at the design stage to evaluate the operational properties of the remote-controlled tracked trains associated with undetermined actions of the driving operator.

The purposeof the study was to evaluate the controllability of caterpillar trains transporting goods off-road with the help of a natural-mathematical modeling complex.

Methodology and research methods.To assess the controllability of caterpillar trains, the mathematical model requirements for a complex of full-scale mathematical modeling were worked out, taking into account the mathematical model of caterpillar train motion. Using the method of natural-mathematical modeling, the controllability of a caterpillar train was evaluated when moving along a “snake” type trajectory.

Scientiﬁcnoveltyandresults.The methods presented in this paper and the developed mathematical model, suitable for a complex of natural-mathematical motion modeling, allow to determine the indicators of tracked trains operational properties associated with non-deterministic control actions of the driver operator and the disturbing effect of the road conditions. The novelty of the work lies in the developed mathematical model and the possibility of its application in the complex of natural-mathematical motion modeling for the study of operational properties and load modes of unmanned tracked trains. As a result of the study, the caterpillar trains controllability evaluation has been made when moving along a “snake” type trajectory as well as assessment of the caterpillar trains transmission load.

Practical signiﬁcance.The developed mathematical model allows determining the indicators of caterpillar trains operational properties at the design stage using a complex of natural-mathematical motion modeling. In addition, when performing virtual races, one can get data on the modes of transmission and select required characteristics.
Rewe bringt Lieferservice ins Ruhrgebiet
Authors: Tewes Werner
Published: March 2022

Rewe ist dabei, Lücken im E-Commerce-Netz zu schließen. Ganz oben auf der Agenda hat der Konzern die Expansion des Lieferservices im Ruhrgebiet stehen. Im Ballungsraum wartet allerdings mit Picnic harte Konkurrenz.
ANÁLISE DA VARIABILIDADE ESPAÇO-TEMPORAL DA PRECIPITAÇÃO NA BACIA DO RIO PARAÍBA USANDO IAC
Authors: Araújo Lincoln Eloi De , Silva Djane Fonseca da , Moraes Neto João Miguel De , Sousa Francisco de Assis Salviano de
Published: March 2022

A bacia hidrográfica do rio Paraíba é de grande importância para o setor agrícola e, consequentemente, para o desenvolvimento socioeconômico local e regional O objetivo deste trabalho foi o de analisar como a variabilidade climática influencia a precipitação local e qual a variabilidade espaço-temporal das chuvas na região. A metodologia utilizada foi o Índice de Anomalia de Chuvas (IAC), desenvolvida por Rooy em 1965. Foram encontradas semelhanças entre os padrões de chuva das sub-bacias rio Taperoá e Alto Paraíba e das sub-bacias do Médio e Baixo Paraíba. Um “ponto de inflexão” na distribuição da precipitação foi encontrado nas sub-bacias do Taperoá e Alto Paraíba, nelas foram observados anos secos consecutivos até a década de 1960. Já nas sub bacias do Médio e Baixo Paraíba foram verificadas semelhanças na alternância de anos secos e chuvosos ao longo da série de IAC.
Presentación
Authors: El Editor
Published: March 2022

No hay resúmenes disponibles.

ECA Estudios Centroamericanos, Vol. 44, No. 485, 1989: 165-166.
A Hybrid Framework for The Implementation of Business Intelligence Systems in Small Scale Enterprises
Authors: Chikohora Teressa Tjwakinna , Esiefarienrhe Bukohwo Michael
Published: March 2022

Small scale enterprises can improve their operations by implementing business intelligence systems. The business intelligence systems are complex and require expertise to ensure successful implementation, hence the need for small scale enterprises to determine their readiness before undertaking the project. To improve chances for successful implementation, this study proposed a framework to guide small scale enterprises on the requirements for business intelligence systems. The design steps defined by Edwards and Goodrich & Tamassia were followed to design the framework. The framework components were informed by the Diffusion of Innovation and Technology Organization and Environment theories, the Information Evaluation Model, and the critical success factors for BIS implementation. A small business may evaluate its resources against the framework components to determine whether to implement a business intelligence system. In future, the framework may be extended to include weights and other criteria to calculate a business’s status.
Tourism Infrastructure Development and Transformation of Vegetation Index in Dodola Island of Morotai Island Regency
Authors: Singgalen Yerik Afrianto
Published: March 2022

The development of tourism infrastructure without control can cause changes in the environmental vegetation index and harm a tourism destination. This study aims to analyze changes in the vegetation index on Dodola Island from 2013-2021 to develop tourism infrastructure. The approach used is remote sensing, namely the Normalized Difference Vegetation Index (NDVI) and Soil Adjusted Vegetation Index (SAVI) using Landsat 8 Operational Land Imager (OLI). NDVI is an index of the greenery or photosynthetic activity of vegetation. Vegetation actively carrying out photosynthesis will absorb most of the red waves of sunlight and reflect higher near-infrared waves. In addition, SAVI is a soil vegetation index adjusted for soil pixels' effect using a vegetation density function. The results of this study indicate a perfect correlation between the NDVI average value and the SAVI average value of 0.996 so that it can be used as data to analyze changes in the vegetation index value on Dodola Island from 2013-2021. The average NDVI value of Dodola Island in 2017 showed a significant decrease to 0.16 from 0.35 in 2016. Likewise, the average SAVI value of Dodola Island in 2017 showed a reduction of 0.12 from 0 .27 in 2016. Although in 2021, the average NDVI value will increase to 0.32 and the average SAVI value to 0.27, stakeholders need to form institutions and establish policies as a preventive measure for the decline in the vegetation index worse than in 2017. Based on the Decree of the State Minister of the Environment No. 201 of 2004 concerning the characteristics of the damage to mangrove forests, the condition of the mangrove area of ​​Dodola Island in 2017 is categorized as damaged and sparse, so that mangrove rehabilitation is necessary. Based on the results of this study, a community-based mangrove ecotourism approach is recommended as an alternative method of sustainable tourism development on Dodola Island.
Influence of the choice of insolation forcing on the results of a conceptual glacial cycle model
Authors: Leloup Gaëlle , Paillard Didier
Published: March 2022

Abstract. Over the Quaternary, ice volume variations are “paced” by astronomy. However, the precise way in which the astronomical parameters influence the glacial–interglacial cycles is not clear. The origin of the 100 kyr cycles over the last 1 million years and of the switch from 40 to 100 kyr cycles over the Mid-Pleistocene Transition (MPT) remain largely unexplained.
By representing the climate system as oscillating between two states, glaciation and deglaciation, switching once glaciation and deglaciation thresholds are crossed, the main features of the ice volume record can be reproduced (Parrenin and Paillard, 2012).
However, previous studies have only focused on the use of a single summer insolation as input.
Here, we use a simple conceptual model to test and discuss the influence of the use of different summer insolation forcings, having different contributions from precession and obliquity, on the model results.
We show that some features are robust. Specifically, to be able to reproduce the frequency shift over the MPT, while having all other model parameters fixed, the deglaciation threshold needs to increase over time, independently of the summer insolation used as input. The quality of the model–data agreement however depends on the chosen type of summer insolation and time period considered.
Spatially distributed modeling of nitrate fluxes at the catchment scale using a transit time distribution approach
Authors: Heidbüchel Ingo , Schütz Sabine , Yang Jie , Van Nguyen Tam , Ebeling Pia , Fleckenstein Jan
Published: March 2022

Predicting dynamic nitrate fluxes at the catchment scale is relevant to understand solute transport processes, assess eutrophication risks and improve water quality management. In order to simplify the complex biogeochemical processes without disregarding the spatial heterogeneity and changing flow paths, we combine physical modeling and a conceptual transit time approach. First, we use the physically-based, 3D, spatially distributed hydrologic model HydroGeoSphere (HGS) to extract transit time distributions (TTDs) of a conservative tracer for different parts of a catchment (partitioned by land use). We systematically combine different initial and boundary conditions analyzing apparent changes in shape and scale of the TTDs. Then we modify the resulting land use-specific TTDs according to the typical decay and retardation processes that are associated with nitrate. This includes retention of organic nitrogen, as well as attenuation by plant uptake and denitrification of inorganic nitrate. Finally, we superimpose and convolve the time series of nitrate-specific TTDs to compute the total nitrate outflux from the catchment.
Along-strike variations in the timing and magnitude of exhumation in the eastern Peruvian Andes
Authors: Falkowski Sarah , Ehlers Todd , McQuarrie Nadine , Buford Parks Victoria , Glover Chloë , Cárdenas José
Published: March 2022

The spatio-temporal history and control of uplift and incision of the eastern flank of the Central Andean Plateau margin is a point of controversial discussion. For example, ca. 4 Ma incision has been suggested for canyons in Bolivia and South Peru (>1250 km apart) and could be interpreted as either tectonically or climatically driven.

To evaluate the sensitivity of cooling ages to climatic and/or tectonic driven erosional exhumation, we build upon previous work and contribute new low-temperature thermochronometer data from three, up to 190-km-long transects from the eastern Andean Plateau to the Subandean Zone in southeastern Peru. The transects extend from the plateau down the San Gabán, Marcapata, and Tres Cruces valleys and include both valley bottom and interfluve samples. This is different from previous work and allows for an evaluation of age-elevation relationships along and across strike.

We present new thermochronometer dates from 46 apatite (U-Th)/He (age range ~1–41 Ma), 23 zircon (U-Th)/He (~4–284 Ma), 21 apatite fission-track (~3–63 Ma), and 11 zircon fission-track (~14–37 Ma) bedrock samples, as well as thermal models. All samples are interpreted in the context of sample elevation and neighboring structures.

We discuss the Miocene–Pliocene exhumation history of the Eastern Cordillera, including differences in the exhumation magnitude between the transects that are ca. 50–100 km away from each other. Based on age-elevation and age-distance relationships of the different thermochronometers and thermal models, we find that causes of exhumation and canyon incision cannot be as clearly identified and separated in time as previously suggested. However, plateau incision in the latest Miocene or later is consistent with climate enhanced incision and needed to explain the relationship between apatite (U-Th)/He and higher-temperature thermochronometer ages. Future work will integrate thermo-kinematic and erosion models to help gain further insight into the deformation history of the area.
Rapid, reproducible, and wrong? Exploring sequential data assimilation as a coping mechanism for model structural error in groundwater decision support modeling
Authors: Markovich Katherine , White Jeremy , Knowling Matthew
Published: March 2022

Model structural error, arising from the inevitable simplification and abstraction modelers must make of complex real-world system and processes, has been shown to produce biased predictions as a direct result of parameter compensation during data assimilation. The specter of structural error especially plagues groundwater decision support modeling, since the inverse methods underpinning calibration and uncertainty analysis favor a computationally efficient and numerically stable model, or in other words, a simpler model. This work explores sequential data assimilation (DA) as a potential coping mechanism for the structural error encountered by simpler models. Unlike traditional batch methods, sequential methods assimilate data in discrete time intervals or ‘cycles’, and simultaneously estimate model state along with model parameters in order to advance the model forward in time. We hypothesize that the estimable model states in sequential DA afford more flexible and appropriate receptacles for the noise introduced into observations from model structural error. Using a paired complex-simple model approach, we empirically evaluate the predictive outcomes of batch and sequential DA in two model error scenarios: first where error arises from coarser resolution in the simple model, and second where error arises from both coarser resolution and fixed pumping rates in the simple model. Overall, we find that both formulations perform well in both history matching and forecasting when employing a high-dimensional parameterization stance, that is, treating all properties and stresses as uncertain and adjustable during the inversion process. When uncertain parameters are removed from the inversion process, however, the data assimilation process is degraded in different ways for batch and sequential formulations. These results have implications for groundwater decision support modeling as they underscore the pitfalls of fixing parameters a priori, such as with pumping, and present a proof of concept for using adjustable model states to cope with model error in decision support modeling contexts.
Turbulence anisotropy observed by Parker Solar Probe
Authors: Zhao Lingling , Zank Gary , Adhikari Laxman , Nakanotani Masaru , Telloni Daniele , Hu Qiang , He Jiansen
Published: March 2022

Parker Solar Probe provides a unique opportunity to study anisotropic turbulence in the inner heliosphere. We summarize our recent investigations of solar wind turbulence observed by Parker Solar Probe during its first seven orbits ranging from 0.1 to 0.6 AU. First, we analyzed turbulence anisotropy based on the 2D + slab model and determined the power ratio between the 2D and slab components. We find that the fraction of the 2D component increases with radial distance. Second, we developed a method to identify small-scale magnetic flux ropes and Alfvenic structures based on the reduced magnetic helicity. Alfvenic structures are prevalent in both slow and fast solar wind in PSP's measurements, while the small flux ropes are quasi-2D structures and are relatively abundant near the heliospheric current sheet and slow solar wind. Finally, we analyzed intervals with solar wind velocity strictly parallel to the mean magnetic field. We find a Kolmogorov-like power spectrum with a power-law index of -5/3. Wave activities in both MHD and kinetic scales are also analyzed in these field-aligned intervals. Fast magnetosonic waves and ion-scale waves are identified.