bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation of parallelization options for the computational image formation algorithm in the synthetic aperture radar for oil spill detection
Authors: Shpenst V A
Published: February 2021

The article discusses the methods of parallelization of the computational image formation algorithm in radar stations designed to detect oil spills. The methods are based on parallel calculations. The methods for modeling the image formation process, the method for extracting information dependencies and the method for scaling and distributing subtasks were developed. The technique for analyzing the efficiency of the parallelization process and evaluating the algorithm stability was suggested, and the computational experiment was conducted. Its results were evaluated.
Use of gelling compositions to prevent salt deposition
Authors: Almukhametova E M , Kuzmina V V , Shadrina P N
Published: February 2021

The main source of salt release is water produced in conjunction with oil. Improving the efficiency of oil production is currently mainly achieved by preventing deposits of inorganic salts during well operation. Of the currently known methods of controlling scaling, the method of preventing deposits using gel-forming components is the most effecient. There are various compositions of gelling compositions to solve this problem. For example, mixtures based on hydrochloric acid, nepheline, high alumina cement, etc. However, these compositions also have some drawbacks. Due to the rapid neutralization of acid, the composition quickly loses its properties. In addition, difficulties may arise when dosing the chemical component and preparing the composition. The formation of the gel directly in the reservoir conditions allows you to create a zone (screen) with increased filtration resistance and exclude inter-reservoir flows, pulling bottom water and fight against scaling. In order for the oil production process to be the most effective, it is very important to choose the optimal option for preventing scaling, taking into account the features of the operation of wells in specific fields.
Downhole screw motor with integrated telemetry system
Authors: Davydov A Y , Yakhina I A
Published: February 2021

The experience of using downhole screw motors with an integrated telemetry system manufactured by Research and Production Company VNIIGIS-ZTK LLC, which allows solving urgent problems of horizontal well construction — precise determination of the opening time of a productive formation and operational control of the wellbore trajectory with the aim of conducting it along the most productive collector.
The relevance of flotation classification in a closed grinding cycle
Authors: Intogarova T I , Valieva O S , Morozov Y P
Published: February 2021

The article discusses a brief history of development of the flotation classification, reflects current trends in the development of flotation ore dressing, in foreign and domestic enrichment practice. Variants of implementation of the flotation classification, due to behavioral patterns, the degree of interaction are discussed. The relationship of flotation and gravitational processes in the flotation classification was identified and confirmed by theoretical and experimental studies. The directions of application of the flotation classification in a closed grinding cycle were considered. Variants of practical application of the flotation classification in a closed grinding cycle for sulfide ores and on tailings for various products of the grinding cycle, in the modes of froth flotation and separation were analyzed, the main advantages were identified. Ways to achieve optimal conditions for flotation classification were described. A new direction for the flotation classification using tapering chutes was identified. It is possible to obtain a conditional concentrate of flotation classification in a closed grinding cycle with the enrichment of the froth product in the tapering chutes. The flotation classification of tailings ensures the maximum extraction of flotation minerals into the froth with the tailings flotation classification being drained. A schematic diagram of flotation classification enrichment in a closed grinding cycle is presented, and the results of calculating final flotation classification parameters for sulphide copper ore dressing are presented. Flotation classifiers in a closed grinding cycle reduce energy costs and increase technological indicators of the enrichment of mineral and industrial raw materials.
Features of IR reflection spectra of β-Tl1-xCuxInS2 single crystals (0 ≤ X ≤ 0.015)
Authors: Matiyev A Kh , Uspazhiev R T , Gachaev A M , Sysoev I A , Khamkhoev B M , Matieva T Ah , Chapanov Kh S-G , Bagov A M
Published: February 2021

The method of long-wave spectroscopy made it possible to study the IR reflection spectra of layered single crystals β-Tl1-xCuxInS2 (0≤X≤0.015) in in the frequency range of 40-500 cm−1 and the temperature range of 84 ¸ 300 K. It was shown that partial substitution of thallium atoms with copper atoms leads to a decrease in the frequencies of the corresponding oscillations in the frequency range of 40-500 cm−1 and does not lead (at these concentrations) to local oscillations. It was found that solid solutions β-Tl1-xCuxInS2 (X=0 ÷ 0.015) exhibit the characteristic single-mode behavior. It was shown that partial substitution of thallium atoms with copper atoms in single crystals β-Tl1-xCuxInS2 (X = 0.005; 0.010; 0.015) weakens the ionic bond in Tl–S, as a result of which the frequencies of “internal” oscillations shift towards low temperatures.
Mossbauer effect in alloys of variable composition (Tb1-xYx)0.8Sm0.2Fe2
Authors: Umkhaeva Z S , Ilyushin A S , Aleroeva T A , Kiseleva T U , Tereshina I S , Pankratov N U
Published: February 2021

The paper presents the results of studying the Mossbauer effect on alloys of the multicomponent system (Tb1-XYX)0.8Sm0.2Fe2 (substitution parameter X = 0, 0.2, 0.4, 0.6, 0.8, 1). This system is based on the TbFe2 compound, which has a cubic crystal structure and the highest magnetostriction constants among rare-earth intermetallic compounds of the RFe2 type. Substitution of atoms magnetic terbium for weakly magnetic samarium (20%) and nonmagnetic yttrium leads to exchange interactions altering in the system which should affect the magnitude of hyperfine interactions on 57Fe nuclei in alloys of this system. The studies were carried out at room temperature. All parameters of the Mossbauer spectrum being isotropic and anisotropic hyperfine fields, quadrupole shift of the components of the spectrum hyperfine structure, and isomeric shift of the Mossbauer line have been determined. Their dependences on the concentration of yttrium have been established.
Geological and statistical modeling of oil recovery of carbonate formations
Authors: Mukhametshin V Sh , Tyncherov K T , Rakhimov N
Published: February 2021

For the conditions of fourteen groups of low productivity, complex features in the carbonate reservoirs of the Volga-Ural oil and gas province were constructed geological and statistical modeling that allows predicting the ultimate oil recovery factor for deposits similar to those studied when solving various development tasks. Based on the consideration of cause-and-effect relationships between geological and technological parameters, the physical interpretation of the obtained models is given. It is established that the variety of oil deposits in carbonate reservoirs according to the conditions of occurrence, geological-physical and physical-chemical properties of reservoirs and their saturating fluids requires a differentiated approach when modeling and using models of the oil recovery process.
Stoke’s theory in problem solution of cementing slurry sedimentation in horizontal sections
Authors: Kuleshova L S , Gabzalilova A Kh , Akhmetshina D I
Published: February 2021

The paper studies the application of Stokes theory in problem solution of cement slurry sedimentation in horizontal sections. As a rule, during the horizontal cementing of wells, due attention is paid to the composition of cement slurry. The final composition should ensure stable casing of the horizontal column - cement slurry - rock. A slight deviation in the fluid loss index can lead to a loss of contact between the cement stone and the rock. The study of the process of sedimentation of solution particles in horizontal sections is relevant. This paper assesses the application of Stokes theory in the solution of the above mentioned problem. The material described in this article will be useful during the study of this topic by students of Mining and Petroleum Faculty, the direction of drilling oil and gas wells, in order to improve the level of knowledge gained during the course of “Well casing” discipline.
On the efficiency of wastewater treatment from solid suspended particles at Tuimazaneft Oil and Gas Production Division (NGDU “Tuimazaneft”)
Authors: Mingulov Sh G , Mingulov I Sh
Published: February 2021

The article shows that the implementation of filters at the intake of submersible pumps along with the flushing deposits from filter elements by a reverse flow of liquid without lifting the pumping equipment is an effective means of cleaning products being extracted from the reservoir from suspended solids. The work notes a considerable experience of NGDU “Tuimazaneft” in the use of mesh filters in pressure maintenance systems. The results present the optimal parameters of the structures and sizes of filter elements, and a high technical and economic effect from their use.
Quality of Service EIGRP Routing Protocol on Campus Area Network
Authors: Antoni Musril Hari , Sri Artika Febria , Derta Sarwo , Darmawati Gusnita , Okra Riri
Published: February 2021

Quality of Service (QoS) is a method of measurement used to determine the capacity of a network to perform services. One of the QoS implementations is to manage the performance of routing protocol. The routing protocol is a method used to connect one router to another, to convey information correctly and to provide a guaranteed service. This study discusses the QoS of the Enhanced Interior Gateway Routing Protocol (EIGRP) applied to campus area network. EIGRP is a routing protocol which only available on Cisco routers and often refers to the proprietary protocol on Cisco. EIGRP can only be applied by Cisco routers and their fellow. Campus area network is an interconnection of computer networks within the campus area. Data exchange on campus network should be undertaken quickly and precisely to facilitate campus operations. The method used in this study was Network Development Life Cycle (NDLC) which consisted of several phases, namely analysis, design, simulation prototyping, implementation, monitoring, and management. The results of this study provided QoS with a throughput value of 77 bps, 0.53 percent of the packet loss value, 1.89 ms of latency, and 1.87 ms of jitter value. This indicates that the EIGRP routing protocol has a strong QoS value to be applied to campus area networks.
Use of the C4.5 Algorithm in Determining Scholarship Recipients
Authors: Novita Rina , Zakir Supratman , Nur Khomarudin Agus , Maiyana Efmi , Hasyim Hamimah
Published: February 2021

The importance of education is increasingly felt by the community. Various attempts were made by parents to continue education for their children. This is in line with the government’s efforts to equalize education. Currently, there are quite a lot of scholarships provided by the government in developing education. One of these scholarships is the Bidik Misi Scholarship. This scholarship is in great demand by prospective students because the period for giving is 4 years and is given every semester. Every year the number of applicants for this scholarship continues to grow. The process of selecting scholarship recipients is getting more complicated due to a large number of candidates for scholarship recipients. The purpose of this research is to develop a system that can assist in selecting prospective scholarship recipients. The method used is Research and Development (RnD) with 4D (Define, Design, Develop, and Disseminate). The system development takes advantage of data mining in classifying the pile of scholarship applicant data using the C4.5 algorithm. The result of the product test shows that the value of the test of vitality is 0.91 which means valid, the practicality test is 0.89 which means that it is practical and the value of the effectiveness test is 0.93 which means that it is effective. These results are shown by the research results obtained from 7 rules with an accuracy rate of 72.5%.
Virtual Multimedia Communication for Physical Distancing in Physical Education
Authors: Adi S , Aldapit Eki , Nova Andi , Dharmika Nugraha Pratama , Hutomo Bhakti Yopi , Bang Redy Utama Made
Published: February 2021

Education is a sector that needs to go on to operate countinously as a means of student’s activity and development in covid-19 pandemic. Multimedia is the best solution for managing PE class not to stop despite the social distancing issue. The aduance of technology in digitalization era isn’t an obstacle to on going learning activities. Advance multimedia facility could surely be able to answer the problem arising in the society related to physical activity carried out as a form of learning. The efectiveness of multimedia learning can be seen from its trancendency to attract student’s attention and interest as it combines the views, sound, and movement. So that learning takes place attractively and easily remembered by the students.
Development Learning Media Based Android for English Subjects
Authors: Kuswanto Joko , Yunarti Yelmi , Lastri Neti , Dapiokta Jum , Adesti Anita
Published: February 2021

This study aims to develop android-based learning media on the subjects of english class IX. The research method used is research development with stages of designing, production, evaluation. The results of this study indicate that the android-based learning media developed on the subjects of english class IX is feasible for use in learning by teachers and students. Based on different stages the trial was being done to experts: media experts 78,3, the design 78, and the matter 80. So the percentage of overall value on the validation experts have eligibility criteria good. To scale one-to-one 80, small group 80,05 and field test 80,5. In addition, students also commented that the android-based learning media are good, varied, interesting and fun. From the results of the data analysis, it can be concluded that the android-based learning media on the subjects of english Class IX are good and can be used in the learning process.
Analysis of Online Learning Activities During the COVID-19 Pandemic at Sulthan Thaha Saifuddin State Islamic University of Jambi
Authors: Buska Wahyudi , Munthalib S.M. , Nurhasnah  , Elwidah Minah , Prihartini Yogia
Published: February 2021

This study aims to obtain objective information about the online learning activities of students of the Islamic Civilization and Humanities Faculty of the Sulthan Thaha Saifuddin State Islamic University of Jambi as implementing the rector’s instructions to carry out the learning process at home during the COVID-19 emergency response period. The research method used is descriptive method with survey research. Data collection techniques used are in direct communication techniques with data collection tools through questionnaires using Google Form media. Respondents in this study amounted to 280 students from the Arabic Language and Literature Department, English Literatures, Library Science, and Islamic Civilization History of the Islamic Civilization and Humanities Faculty of the Sulthan Thaha Saifuddin State Islamic University of Jambi. The results obtained from this study indicate that online learning activities of students during the COVID-19 emergency response to home study policies were “quite good”. With the force majeure situation and with all the challenges and obstacles that are expected in the future can be used as an evaluation and experience in online learning both for students and lecturers.
A Utilization of Information Technology on Education in Indonesia (2017-2020): A Systematic Literature Review
Authors: Wahyu Widodo Arif , Solikhatun Ismi , Raharja Setya , Abdun Salam Ahmad , Sri Wartini Florentina
Published: February 2021

This research aims to demonstrate a theoretical review of information technology used on education in Indonesia in since 2017 to 2020 and review the areas that have been researched to give an overview of the potential subsequent studies. areas of study that have been researched to give an overview of the potential subsequent studies. This study used a qualitative methods of systematic literature review of Denyer and Tranfield models which is divided into 5 systematic steps. From the documents found, demonstrated that the utilization of information technology in the field of education in Indonesia throughout the year 2017-2020 has experienced a surge in innovation in the field of development of learning media and education governance facilities. These developments are mostly solutions to solve contextual problems in research approach, dominance of development and survey is inversely proportional to the case study method, action research phenomenology, and evaluation. In the research object, policy evaluation sector, learning evaluation, and quality assurance have not been lifted as a research object. These sectors have the potential to be objects in future research.
Optimization of Personal Website: Solution for Learning in The New Normal Era
Authors: Lubis Mukhlis , Depalina Siregar Syamsiah , Kasman  , Rukiah  , Afridah
Published: February 2021

The education sector is one of the sectors most affected by the spread of the Covid-19 pandemic. Lecturers must ensure that teaching and learning activities continue even though students are at home. Learning innovation in the era of the industrial revolution 4.0 is a solution that needs to be designed and implemented by lecturers by maximizing existing media such as websites. Optimizing the Lecturer Personal Website is a learning model solution that can be used to deal with the current New Normal Era, especially in the field of education. The learning model through lecturer personal websites aims to optimize the role and function of the website and get added value or benefits that students get from using the Web (E-Learning). This research was conducted at STAIN Mandailing Natal using qualitative descriptive methods. The research data were obtained through recorded interviews with 8 informants, classroom observation, documentation, and literature study. This study used the interactive model data analysis technique of Miles and Huberman. The results showed that the personal role of the lecturer website was as a facility to support the quality of Islamic Law learning at STAIN Mandailing Natal. It has function as means of accessing E-Learning that is easier, more cost-effective, attractive and interactive and serves as a discussion tool for students. Students are more enjoy and full spirit in the learning process because they are cover in getting information and learning materials needed in learning Islamic Law.
Utilization of Information Technology Media and Communication in Distance Learning During the Covid 19 Pandemic
Authors: Januar  , Rahmi Alfi , Andryadi  , Hadini  , Yudelnilastia
Published: February 2021

The Covid 19 pandemic has had an impact on various life settings. One of them is in educational institutions. The application of New Normal with its social distancing has made learning carried out remotely. The implementation of distance learning in schools needs an innovation through the use of Information and Communication Technology in learning. There are several Information and Communication Technology media that can be used in learning including computers and the internet. Teachers can design subject matter using computers. Then the material that has been designed is delivered to students via the internet network. Currently, there are many social media that support distance learning. SDIT Cahaya Hati has also conducted distance learning. Teachers need to prepare distance learning material in advance before it is delivered to students. This study aims to reveal the use of Information and Communication Technology by SDIT Cahaya Hati teachers in distance learning during the COVID-19 pandemic. The type of this research is qualitative with interview data collection techniques, and documentation. The results show that the Cahaya Hati SDIT teachers have organized distance learning using Information and Communication Technology media. SDIT Cahaya Hati teachers use computers to make learning materials in the form of power points and learning videos. This material is delivered to students using the internet network through a WhatsApp group. Every day the teacher evaluates the learning and once a week the assignment is handed over to the teacher at school
Development of Smart Play Wheel Learning Media to Improve Student Learning Outcomes in Islamic Elementary schools
Authors: Udin By Arifin Moch. Bahak , Nurdyansyah  , Rindaningsih Ida , Kalimah Siti
Published: February 2021

This research is motivated by a phenomenon that occurs in the learning outcomes of students of class 3 semester one at Islamic Primary School Nurul Huda Ngampelsari Sidoarjo. Learning outcomes show does not meet the minimum completeness criteria with a p-value of 75 in the material of faith in the angel lessons Aqeedah Morals. This research and development aim to produce learning media for the spinning of the smart wheel in learning the morality of Aqidah’s material religion in the angels of God. This type of research is a type of research and development. The development model used by researchers is the Borg and Gall development model with nine stages of learning design. The results of the development of smart spinning wheel learning media meet the criteria with the results of content expert validation reaching 100%. The validation results of the design experts reached 100%. The results of individual trials reached 100%. The results of small group trials were 83%. The results of a large group trial reached 94.67%, the results of t-test analysis with a significance level of 0.05 indicate the p-velocity value of the t-test statistic was 0.00 <0.05, it can be concluded that Ho was rejected and Ha was accepted. This shows that there is a significant effect on the pre-test and post-test mean values. The conclusion is the smart wheel learning media that was developed effectively in improving student learning outcomes for 3rd semester one students at Islamic Primary School Nurul Huda Ngampelsari Sidoarjo.
VCD Development of Innovative Character-Based Learning Models as Learning Media in Learning Strategy Courses
Authors: Rahayu S , Mertha I G , Hadi K A , Gunawan G , Hikmawati H
Published: February 2021

This research aims to develop VCD media on character-based innovative learning models. The type of this research is the study of R & D with Four-D). The analysis of the data used to develop the models of learning and development within the VCD pieces is using the sheet media expert assessment and experts’ and students’ responses. Based on the evaluation through questionnaires by material experts showed 87.0% for character-based PBL Learning plan and got 85.9% for Cooperative Learning Model type TS-TS, both including its category Neither instrument of Lesson Plan. Results of the validation study model VCD by a media expert with the details of the quantitative results are obtained to have an average percentage of 84.70% for VCD character-based PBL learning model and 88.2% for the type of cooperative learning model TS-TS. From these results, it can be concluded that the media VCD learning model being developed has fulfilled the good criterion. Meanwhile, based on student questionnaires obtained quantitative data has a percentage of 80.60% for VCD on character-based PBL learning model and 84.7% for the type of cooperative learning model TS-TS. Therefore, it can be concluded that the developed media is already categorized to be good.
The Website-based Information Literacy system and Application in Education Facing the Age of Industrial Revolution 4.0”
Authors: Istikomah  , Puji Astutik Anita , Jannah Miftahol
Published: February 2021

This article discusses about the importance of web-based information literacy systems in the era of the industrial revolution 4.0. This era was built on the integration of intellectual (artificial intelligence) with the physical world by opening unlimited space and opportunities for humans to access information and interact virtually fast and easily and very low cost. Therefore, the industrial revolution 4.0 is perceived as a new age that will open opportunities as well as challenges for human life, including for education. In facing this era, high intelligence is needed to explore educational resources and to apply technology that is relevant to the evolving virtual reality. This web-based education information literacy system is one solution to facilitate students in obtaining, designing and processing knowledge and skills needed in their future lives. Education managers must innovate and utilize this system by continuously updating the latest so that the outputs and outcomes of education will be ready to face the rapidly advancing technological developments. Education is not only maintaining and preserving the tradition (culture) of society about learning but it is carving and engineering the future of the young generation in the face of global world competition that continues to roll without any time and space limits.
How to Develop Scientific Literacy Enrichment Book on Earth Science Content Using Plomp Method?
Authors: Puspaningtyas A A
Published: February 2021

The purpose of this study is to produce a book on enriching scientific literacy in Earth Science context that is feasible and appropriate for junior high school students. The development of science literacy enrichment books uses the Plomp method which consists of problem analysis, prototype design and development, evaluation, and revision. In the process of developing the book an instrument is used in the form of a list of indicators which are a combination of material and competencies developed. The material developed includes Atmosphere, Hydrosphere and Lithosphere which includes discussions on environmental pollution, global warming, the water cycle, earthquakes, tsunamis, volcanoes and soil. Competencies developed include the competence to explain phenomena scientifically, interpret scientific data and evidence, and evaluate and design investigations. In the evaluation process the instruments used were questionnaires, readability test instruments and scientific literacy tests. The participating participants numbered 30 of grade 7 students from one of the junior high schools in Cilacap District. The results of the study showed that the developed scientific literacy enrichment book was feasible to use with a percentage of eligibility of 79,2%.
Information and communications technology (ICT) based of chemistry instructional learning design for students with multiple intelligence
Authors: Kurniawati Y , Wigati M R , Hasri S
Published: February 2021

ICT-Based for Chemistry Instructional Learning specifically designed for multiple intelligence students is one of the innovations that answer the needs of learning chemistry in the era of industrial technology 4.0. This research was conducted using a mixed method with exploratory design, with an experimental sample of class XI students with a minimum of 5 multiple intelligence. Validation by the expert was carried out to determine the initial quality of Chemistry Instructional Learning in the form of media created using Adobe Flash CS 6. The test, questionnaire and interview instruments were used to determine the practicality and response of students. The product in the form of Learning Media for students with Multiple Intelligence is the result of this study, with a validity value of 88.33%. The Practicality Test yields a value of 88.98 and student responses show that 95.2% of students are very interested in learning using ICT-based Chemistry Instructional Learning. This research shows that this media can be implemented to support student learning with multiple intelligence. However, further research is needed to find out the results of its implementation and effectiveness.
Using Information Technology; Efforts in Overcoming Student Learning Difficulties
Authors: Tumatul Ainin Dewi , Amaliyah Yuli , Rifa’i Moh. , Suhartatik  , Laila Nur , Fitriani Ana
Published: February 2021

This study aims to analyze the use of Information Technology in early language development in Madrasah Ibtidaiyah Negeri Model, Jambi and Madrasah Ibtidaiyah Az-Zainiyah II Karanganyar Paiton Probolinggo, East Java. This research uses a qualitative approach with a case study. The results showed that: efforts to overcome student learning difficulties in both madrasah were carried out through several media namely: PowerPoint media, audio in the form of CDs or cassettes and headphones, visual in the form of graphic media containing images, posters, caricatures and audiovisual form of television. Furthermore, the use of instructional media related to information technology, has the use and function of each, adjusting the material being studied or taught to students.
Improving History Literacy among Adolescences: Towards Hoax Prevention through KCBS (Kumpulan Cerita Buku Sejarah)
Authors: Novitasari S , Gunawan G , Nursaptini N , Sobri M , Nurmawanti I
Published: February 2021

Teenagers tend to find difficulties in filtering hoax due to a lack of literacy skills. They view that learning history through a book is boring. Instead, teenagers prefer to read information online. This study aims to improve history literacy among adolescences in order to prevent the spread out of hoax through KCBS (Kumpulan Buku Cerita Sejarah/the collection of historical narratives). The method used is qualitative with a descriptive approach. The result of this study is improved history literacy of the adolescences which enabling them to filter information gathered from blogs and websites as well as the use of Facebook as a source of information and the development of positive characters. One of many ways to improve history literacy is through literacy movement in which students are imperatively encouraged to read history books that are followed by summarizing a certain topic into the KCBS (Kumpulan Cerita Buku Sejarah). Rewriting historical narratives is hoped to improve the students’ literacy skills so that in the near future they will understand the danger of spreading out a hoax and will better respond to prevent the widespread.
Exploring sustainable transportation development in Penang: stakeholders’ perspectives of the Penang Transport Master Plan
Authors: Bagde A V , Blanes R , Isa S M
Published: February 2021

Transportation is associated with all aspects of the nation’s growth. Nowadays, sustainability is one of the primary goals of many urban transportation systems. Over the past, many innovative initiatives have been undertaken to achieve a safe, efficient, and sustainable transport system. Besides, natural environment, social wellbeing, and economic prosperity depend on sound transportation systems. In Malaysia, Penang is well-known as an industrial and medical hub. In recent years, the state has experienced rapid economic growth. However, without proper development planning for the transportation system and infrastructure, the growth for sustainable development will be jeopardised. Heavy congestions due to increasing car dependency lead to psychological stress for the travellers. There are limited studies on sustainable transportations in Penang. Therefore, this study will explore the current transportation system in Penang, including the Penang Transport Master Plan. To address the aim of the research, we adopt an inductive cross-organisational semi-structured interview to explore the current level of sustainability within Penang transportation system. From this case study, the initial findings indicate Penang is in dire need for a robust, sustainable transport system which can include rail transports and integration of different modes of transport. Moreover, the result also shows that the behaviour and attitude of Penangites towards public transportation needs to be changed. This study suggests a series of long term and short term solutions to enhance the performance of the transportation system in Penang. The balance alignment between the economic, social and environmental themes of sustainability will overcome the issues faced by the current transportation system in Penang.
Trends Analysis of Research on Principal Leadership and Teacher Quality Application using Tag Crowd
Authors: Ihwan  , Santoso Handoko , Juhri AM , Noor Marzuki
Published: February 2021

Starting from the assumption that the study of school leadership has been done is the main reason the study was conducted. This simple study to be a part of pre-research to be able to position the focus of full-research studies are planned. Several software tools are required YagHarzing’s Publish or Perish and Tagcrowd, and metadata retrieved from the database CrossRef research. The result is a data visualization research with variable Principal Leadership and Teacher Quality. The phenomenon that appears in data visualization studies describes new trends and loopholes that can be done.
Discovery Learning Model to Practice Students’ Science Process Skill in Elasticity and Hooke’s Law
Authors: Hikmawati H , Kosim K , Doyan A , Gunawan G , Kurniawan E
Published: February 2021

The science process skills of high school students in the West Lombok Regency are still relatively low. This is indicated by the report on the results of the 2017/2018 national exams on physics, chemistry, and biology subjects included in the low category. This study aims to describe the effectiveness of the discovery learning model to practice the science process skills of class XI students of SMA Negeri 1 Kediri on Elasticity and Hooke’s Law. This type of research is a quasi-experiment, with the basic pattern “The One Group Pretest-Posttest Design” and descriptive method. The instrument used in this study was the observation sheet implementation of the discovery learning model and the test results of the science process skills. The results showed that: (1) the percentage of implementation of discovery learning models increased, which means better quality of learning, and (2) the percentage of tests of students’ science process skills results in Elasticity and Hooke’s Law also increased.
Tropical African wildfire aerosols trigger teleconnections over mid-to-high latitudes of Northern Hemisphere in January
Authors: Yan Huiping , Zhu Zhiwei , Wang Bin , Zhang Kai , Luo Jingjia , Qian Yun , Jiang Yiquan
Published: February 2021

This study investigates the impacts of African wildfire aerosols (primary organic carbon, black carbon and sulfate) on the Northern Hemispheric in January. We found that wildfire aerosols emitted from equatorial Africa result in two mid-to-high latitudes atmospheric Rossby wave trains. One is from subtropical Atlantic propagating northeastward across Europe to Siberia, and the other one propagates eastward from Middle East across Asia to Pacific Northwest. The maximum positive geopotential height anomaly locates in Europe, concurrent with a greater-than-2 K land surface warming. These Rossby wave trains are excited by the atmospheric heating that caused by the wildfire aerosols in equatorial Africa and propagate into extratropics with the help of the westerly jet. Based on the diabatic heat budget analysis, the Rossby wave source is primarily from the solar absorption of black carbon of African wildfire. The present study emphasizes that wildfire aerosols, especial the absorbing aerosols, would have profound climate effects on remote regions and thus need more attentions.
On the anomalous development of the extremely intense positive Arctic Oscillation of the 2019–2020 winter
Authors: Juzbašić A , Kryjov V N , Ahn J B
Published: February 2021

Numerous extreme climate anomalies were recorded in the northern extratropics in January–March (JFM) 2020, significantly impacting human lives and ecosystems in the affected areas. Those anomalies were caused by an extreme positive Arctic Oscillation (AO) event, with the JFM 2020 AO index of 2.8 being the highest on the record. However, all well-established autumn precursors pointed towards the following wintertime AO phase being negative. Indeed, a negative AO phase was developing until late December when a sudden shift to the strong positive AO event occurred in the troposphere. The geopotential anomalies associated with positive AO spread into the lower stratosphere, and were steadily enhancing throughout JFM resulting in an extreme positive AO event. We show that the strong positive AO event was a result of the destructive interference of the anomalous planetary waves with climatological ones, which led to wave flattening and enhancement of the polar vortex.
Challenges and opportunities in precision irrigation decision-support systems for center pivots
Authors: Zhang Jingwen , Guan Kaiyu , Peng Bin , Jiang Chongya , Zhou Wang , Yang Yi , Pan Ming , Franz Trenton E , Heeren Derek M , Rudnick Daran R , Abimbola Olufemi , Kimm Hyungsuk , Caylor Kelly , Good Stephen , Khanna Madhu , Gates John , Cai Yaping
Published: February 2021

Irrigation is critical to sustain agricultural productivity in dry or semi-dry environments, and center pivots, due to their versatility and ruggedness, are the most widely used irrigation systems. To effectively use center pivot irrigation systems, producers require tools to support their decision-making on when and how much water to irrigate. However, currently producers make these decisions primarily based on experience and/or limited information of weather. Ineffective use of irrigation systems can lead to overuse of water resources, compromise crop productivity, and directly reduce producers’ economic return as well as bring negative impacts on environmental sustainability. In this paper, we surveyed existing precision irrigation research and tools from peer-reviewed literature, land-grant university extension and industry products, and U.S. patents. We focused on four challenge areas related to precision irrigation decision-support systems: (a) data availability and scalability, (b) quantification of plant water stress, (c) model uncertainties and constraints, and (d) producers’ participation and motivation. We then identified opportunities to address the above four challenge areas: (a) increase the use of high spatial-temporal-resolution satellite fusion products and inexpensive sensor networks to scale up the adoption of precision irrigation decision-support systems; (b) use mechanistic quantification of ‘plant water stress’ as triggers to improve irrigation decision, by explicitly considering the interaction between soil water supply, atmospheric water demand, and plant physiological regulation; (c) constrain the process-based and statistical/machine learning models at each individual field using data-model fusion methods for scalable solutions; and (d) develop easy-to-use tools with flexibility, and increase governments’ financial incentives and support. We conclude this review by laying out our vision for precision irrigation decision-support systems for center pivots that can achieve scalable, economical, reliable, and easy-to-use irrigation management for producers.
The hidden symmetry of the asymmetric quantum Rabi model
Authors: Mangazeev Vladimir V , Batchelor Murray T , Bazhanov Vladimir V
Published: February 2021

The asymmetric quantum Rabi model (AQRM) exhibits level crossings in the eigenspectrum for the values

ϵ
∈

1

2

Z

of the bias parameter ϵ. Such level crossings are expected to be associated with some hidden symmetry of the model. The origin of this hidden symmetry is established by finding the operators which commute with the AQRM Hamiltonian at these special values. The construction is given explicitly for the first several cases

ϵ
=
0
,

1

2

,
1

and can be applied to other related light–matter interaction models for which similar level crossings have been observed in the presence of a bias term.
Study of the quality and safety of microbiological bioformulations for plant protection and growth stimulation
Authors: Savinkova O V , Syromyatnikov M Y , Sablina I I , Popov V N
Published: February 2021

Bioformulations containing microorganisms that have various useful properties for plants are widely used as an alternative to chemical pesticides. Methods for evaluating the quality of such biological products have not yet been standardized. Composition of bioformulations used for protecting plants and stimulating plant growth was studied with molecular methods. Toxicity of bioformulations was evaluated on laboratory populations of bumblebees (Bombus terrestris L.). The number of bacteria in the two bioformulations was significantly less than the manufacturer’s stated. The declared composition of microorganisms in 33% of bioformulations did not fully or partially correspond to the identified composition. Klebsiella sp. and Citrobacter sp. bacteria were found among non-target bacteria. It is known that some species of these bacteria genera are opportunistic for humans. Not one of the studied bioformulations did not cause the death of bumblebees. However, it was found that 5 bioformulations out of 18 reduced the flight activity of bumblebees, which indicates their toxic effect. The data obtained by us shows that it is necessary to develop standardized methods for assessing the quality and safety of microbiological bioformulations that are available for public sale.
Research of bakery properties of varieties of selection rye
Authors: Bukhovets V A , Davydova L V , Korotkova L A , Tochilkin A S , Saidullayeva Y T
Published: February 2021

The Strategy for Improving the Quality of Food Products in the Russian Federation until 2030, approved by Government Order No. 1364-r of 29 June 2016, is aimed at ensuring full nutrition, preventing diseases, increasing the duration and quality of life of the population, stimulating the development of production and circulation of food products on the market of proper quality. One of the tasks facing the bakery industry is the need to restore the production of rye bread and varieties from a mixture of rye and wheat flour everywhere. Rye bread baking can be carried out not only in the conditions of large enterprises, but also in the conditions of low-capacity enterprises. The main task of rye selection is to improve existing varieties, that is, to create varieties with higher flour-baking qualities. The variety “Memory Bambisheva” refers to a steppe ecological group, Botanical varieties “Vulgare”. During the competitive test the average yield in the Saratov region amounted to 3.5-3.7 tons per hectare. The variety has a high winter hardiness, drought resistance to asphyxiation, morbid affection, and a good lodging resistance [1]. Studies of bakery properties of rye varieties “Saratov 7” and “Memory Bambisheva” are given, grade features of rye are noted, comparative assessment by technological indicators is carried out, technology of rye-wheat bread production is proposed. The obtained indicators show the expediency of introducing flour from white grain rye “Memory Bambisheva” into the raw material base of bakery products.
Quality of camelina oil cultivated in Black Sea region
Authors: Turina E L , Pashtetsky V S , Efimenko S G , Prakhova T Ya , Kornev A Yu , Liksutina A P
Published: February 2021

Camelina is an oil-bearing crop that is increasingly gaining popularity in the world due to its high oil content and wide applicability. Since 2019, this crop has been cultivated in Black Sea region on an industrial scale. The study of the quality of Camelina oil showed the dependence of seed oil content on the Selyaninov’s hydrothermal coefficient (HTC). The highest oil content–44.02%–was observed in the most favorable year in terms of water availability (HTC=1.11), while the lowest–33.9%–in dry year (HTC=0.23). The comparison of fatty acid composition of Camelina oilseeds showed that the oleic acid content in varieties ranges from 14.46 to 16.57%, erucidic–from 3.07 to 3.25%, linolic–from 17.89 to 19.66%, linolenoic–from 33.02 to 37.06%. The consumer properties of Camelina oil include a relatively high total tocopherol content. In terms of its composition and properties the oil of Camelina seeds grown in Black Sea region is suitable for the synthesis of biodiesel fuel. Thus, in Black Sea region Camelina is a unique natural-biological resource that makes it possible to use oil in various areas of the national economy.
Influence of feeding by nitrogen mineral and integrated organomineral fertilizers on the yield and quality of hard wheat
Authors: Pashtetskiy V S , Izotov A M , Izmailova D S
Published: February 2021

The problem of nutrition of the world’s population has become even more acute and complex, due to the increase in the population. In solving this problem, a special role belongs to cereals and winter durum wheat in particular. The soil and climate conditions of the Crimea are quite favourable for growing this crop. The purpose of the research is to study the mutual influence of fertilizing with nitrogen fertilizers in the form of ammonium nitrate and complex organomineral fertilizers on the yield and quality of durum wheat. Field experiments were conducted in 2016-2018 in the Foothill-steppe zone of Crimea. It was found that the highest yield of winter durum wheat (52.3 C / ha) with a gluten content of 28.70% and protein of 15.56% is formed when n 60+60 is applied. The most effective complex organomineral fertilizers are Aminokat, Microkart, Atlante, foliar treatment of which contributes to the production of grain yield of 38.65-39.85 C / ha with high-quality indicators: gluten content-22.85-25.12%, protein content-12.52-13.20%.
Modeling of multicomponent flour mixtures for bakery products using software
Authors: Berezina N A , Artemov A V , Nikitin I A , Khmeleva E V , Kozlova V A , Makarova N A
Published: February 2021

Rational proportion of food constituents in recipes of rye-wheat bakery products taking into account the basic principles of food combinatorics while simultaneously obtaining the final product with high consumer properties is a relevant objective. Modern tools for implementation of this task is computer-aided modeling using mathematical apparatus that involves information technologies application to automate the process. The article presents an integrated approach to optimization of the multicomponent mixture composition for rye-wheat bakery products taking into account the chemical composition and technological properties of food constituents of the mixture. Applying of the automated calculation module made it possible to obtain multicomponent flour mixtures with balanced composition where proteins, fats and carbohydrates ratio is 1.0:0.8:3.9-4.8, calcium, phosphorus and magnesium ratio is 1:0.5-0.6:1.2-1.5 due to the use of food and technological potential of unconventional raw materials for baking. At the same time, the protein content in rye-wheat bakery products made from multicomponent mixtures is by 1.7-2.3 % higher than that of the analog, lipids content–by 1.5-3.5 % higher, the amount of digestible carbohydrates decreased by 7.5–9.5%, the amount of fiber increased 5.0-8.5 times, the amount of calcium increased 5.0-6.6 times, the amount of phosphorus increased 1.3-1.6 times, and the amount of magnesium increased 1.4-1.8 times.