bluuebunny/crossref_metadata_2025 huggingface dataset:
HUBUNGAN TINGKAT PENGETAHUAN DAN KOMUNIKASI KELUARGA DENGAN INTERAKSI SOSIAL PADA REMAJA
Authors:   STIKes Nan Tongga Lubuk Alung, Yolanda Mona , Agustia Rani ,   STIKes Nan Tongga Lubuk Alung
Published: February 2021

Remaja (adolescence) menurut Hurlock didefinisikan sebagai masa peralihan dari masa kanak – kanak ke masa dewasa, rentangan usia antara 13 tahun sampai 21 tahun. Laporan “United Nations Congress on the Prevention of Crime and the Treatment of Offenders” bertemu di london menyatakan meningkatnya jumlah juvenile delinquency (kejahatan anak remaja) dunia, dalam kualitas kejahatan dan peningkatan dalam kegarangan serta kebingisannya yang lebih banyak dilakukan dalam aksi kelompok daripada tindakan kejahatan individ. Penelitian ini bertujuan untuk mengetahui hubungan pengetahuan dan komunikasi keluarga dengan interaksi social remaja kelas I dan II di SMPN 2 Lubuk Alung. Jenis penelitian deskriptif analitik menggunakan desaincross sectional study. Waktu penelitian dari Mei – Juni 2019 di SMPN 2 LubukAlung. Jumlah populasi yaitu 134 dalam tahun 2018. Sampel sebanyak73 responden. Hasil penelitian didapatkan bahwa 54,8% orang remaja berpengetahuan rendah, 50,7% orang remaja memiliki komunikasi keluarga yang kurang baik dalam berinteraksi sosial. Hasil uji statistik uji chi-square diketahui bahwa terdapat hubungan antara pengetahuan (p value 0,000) dan komunikasi keluarga dengan interaksi sosial (p value 0,000) di SMPN 2 LubukAlung. Disarankan bagi siswa/siswi agar lebih meningkatkan komunikasi dengan keluarga dan cara berinteraksi dengan baik.
Uji Aktivitas Antibakteri Kombucha Rosela (Hibiscus Sabdariffa L.) Terhadap Bakteri Escherichia Coli dan Staphylococcus Aureus
Authors:   STIKES Rumah Sakit Anwar Medika, Chofidah Adinda Ismu , Danu M.Dwi ,   STIKES Rumah Sakit Anwar Medika, Rosyidah iif H ,   STIKES Rumah Sakit Anwar Medika
Published: February 2021

Rosela merupakan salah satu tanaman obat keluarga yang sering digunakan sebagai obat tradisional untuk menghambat pertumbuhan bakteri. Rosela memiliki potensi untuk dijadikan minuman teh kombucha. Tujuan penelitian ini yaitu untuk mengetahui aktivitas antibakteri kombucha rosela (Hibiscus sabdariffa L) terhadap Escherichia coli dan Staphylococcus aureus. Kombucha rosela dibuat dengan cara memfermentasikan ekstrak rosela, starter dan gula selama 7 hari dengan variasi konsentrasi ekstrak 20, 30 dan 40 gram. Selanjutnya dilakukan uji aktivitas antibakteri dengan metode disk diffusion (tes Kirby & Bauer) . Hasil uji aktivitas antibakteri menunjukkan bahwa kombucha rosela pada konsentrasi 20, 30 dan 40 gram dapat menghambat dan membunuh bakteri dengan baik, namun paling optimum menghambat bakteri adalah kombucha dengan konsentrasi rosela 40 gram menghasilkan zona hambat 6,5 mm terhadap bakteri E.coli yang dikategorikan dengan daya aktivitas antibakteri sedang. Sedangkan kombuca rosella memiliki daya hambat kurang dari 5 mm (daya hambat lemah) terhadap bakteri S.aureus.
ANALISIS FAKTOR KEPUASAN KERJA DAN PENGARUHNYA TERHADAP TURNOVER INTENTION KARYAWAN
Authors: Hadini Sri , Setiawan Ivan
Published: February 2021

Turnover karyawan merupakan masalah yang sering dihadapi oleh organisasi bisnis, khususnya sektor privat. Turnover dapat berupa pengunduran diri, perpindahan keluar unit organisasi, pemberhentian, atau kematian anggota. Turnover berlebih merupakan hal yang tidak dikehendaki oleh perusahaan, karena dapat merugikan perusahaan dilihat dari segi biaya, sumber daya maupun motivasi karyawan yang bertahan pada perusahaan. Dilihat dari perspektif psikologi, turnover dapat dipahami sebagai suatu sikap yang dapat diukur dan diproksi oleh turnover intention, yaitu kecenderungan atau niat karyawan untuk berhenti bekerja dari pekerjaannnya.

Penelitian ini mencoba memahami turnover intention berdasarkan aspek sikap lain yaitu kepuasan kerja. Secara umum, kepuasan kerja tersusun atas dimensi-dimensi gaji, kondisi pekerjaan, promosi, supervisi, dan rekan kerja. Lebih dari 40 tahun dimensi-dimensi tersebut dipahami, diukur, dan umumnya diterima oleh peneliti. Beberapa variasi terjadi melalui penambahan dimensi. Persoalan mendasar yang layak apakah kelima dimensi tersebut masih relevan mengingat perjalanan waktu dan perbedaan kondisi subjek maupun lingkungan yang diteliti.

Penelitian ini mengkaji ulang keberadaan lima dimensi kepuasan kerja dengan menggunakan teknik analisis faktor serta menghubungkannya dengan keluaran penting organisasi yaitu turnover intention.

Subjek adalah 60 responden yang bekerja pada industri food and beverage. Hasil penelitian menunjukkan bahwa dimensi kepuasan kerja tersusun atas enam dimensi yaitu gaji, supervisi, promosi, lingkungan non-fisik, kondisi pekerjaan, dan rekan kerja. Pengujian hipotesis menunjukkan bahwa dimensi gaji dan supervisi berpengaruh negatif terhadap turnover intention. Dimensi-dimensi lainnya mencakup promosi, lingkungan non-fisik, kondisi pekerjaan, dan rekan kerja tidak berpengaruh signifikan terhadap turnover intention.
The Role of Forensic Accounting Techniques in Reducing Cloud Based Accounting Risks in the Jordanian Five Stars Hotels
Authors: Hashem Firas
Published: February 2021

The current study investigated the role of forensic accounting techniques in reducing Cloud Based Accounting risks in the Jordanian five stars hotels. The study population consisted of all accountants in Jordanian five stars hotels. Five stars hotels accountants located in Amman the capital were selected subjects. The total is (170) accountants. A random sample amounting 118 accountants were selected. 118 questionnaires were distributed and 96ones were collected. The study concluded that: There is a significant role of Forensic Accounting Techniques ((FPDDS), (FAIIS), (LMAS), (CARDR)) in reducing Cloud Based Accounting risks in the Jordanian five stars hotels. Despite the fact that nature of computer crime is increasing daily, so there is a need for different types of efforts, to be made on all levels of cloud investigations. And in the same time all legislations and codification related to computer crimes must be updated and reviewed from time to time to keep up with emerging technology.
PLACENTAL DYSFUNCTION IN PREGNANT WOMEN WITH DIABETES. MODERN APPROACHES TO CHILDBIRTH
Authors: Tertyshnyk D. Yu. , Borzenko Iryna Borysivna , Liashchenko O. A. , Ovcharenko O. B. , Medviedieva M. O.
Published: February 2021

Diabetes mellitus is a common chronic disease in the women of reproductive age. Pregnant women with this disease often have placental dysfunction, which manifests itself in fetal growth retardation, dehydration and requires delivery by a cesarean section. To evaluate the effect of antiprogesterone use on cervical maturation and optimization of delivery in pregnant women with placental dysfunction resulted from diabetes, 120 women were examined according to generally accepted norms. Ultrasound examination with Doppler velocimetry of the fetoplacental complex vessels and measurement of the uterus neck, hormonal examination to determine the level of hormones (progesterone, oxytocin, prostaglandin E2) by enzyme−linked immunosorbent assay, endothelial dysfunction factors (VEGF, endothelin, еNOS), assessment of uterus neck according to Bishops' score and the course of childbirth by cardiotocography and partogram, the newborn condition on the Apgar scores, newborn weight, glycometric condition of the mother. Preparation of pregnant women for childbirth was carried out by intracervical injection of prostaglandins of group E2 (dinoprostone); Foley catheter; antiprogesterone drug (mifepristone). The research has found that diabetes complicates the course of pregnancy with placental dysfunction in almost every second pregnant woman due to endothelial dysfunction, especially in the fetoplacental complex, which can be determined at an earlier stage of pregnancy by studying endothelial factors. The need for initiating the premature birth in pregnant women with diabetes is stipulated by the impairments in mother and fetus (placental dysfunction, diabetic fetopathy, distress), which requires preparation of the cervix for the labor induction. The most effective pre−induction of pregnant women with diabetes was the pathogenetic method of intracervical administration of antiprogesterone, which did not have a negative effect on the body of mother and child. Key words: diabetes mellitus, placental dysfunction, pregnant women, antiprogesterone.
Prosthodontics in COVID-19 era: The Right Prospective
Authors: Patil Snigdha , Yeshwante Babita , Kotewar Shivani , Kothari Nitin
Published: February 2021

Since its emergence in December 2019, corona virus disease 2019 (COVID-19) has impacted severalcountries, affecting more than 90 thousand patients and making it a global public threat. The routes oftransmission are direct contact, and droplet and possible aerosol transmissions. Due to the unique natureof dentistry, most dental procedures generate significant amounts of droplets and aerosols, posing potentialrisks of infection transmission. Understanding the significance of aerosol transmission and its implicationsin dentistry can facilitate the identification and correction of negligence in daily dental practice.
Conceptual Framework on Effects of Music in Polycystic Ovary Syndrome of A Case
Authors: Urmita Chakraborty
Published: February 2021

Music is a source of pleasure and creativity. In the present work an attempt to relate musical experiences

with sexual suggestiveness has made in the clinical population (PCOS). The subject’s personality along case

history has been assessed. It is a single case research design (n=1, a female unmarried case of 32 years). 11

songs (including a background music) were judged by the subject to determine the level of suggestiveness.

The songs were evaluated by the researchers (one male and one female) to know suitability of the parameters

fixed in this study. Inductive analysis for creative synthesis was maintained to discover patterns in sexual

behavior of the subject. Results were analyzed and discussed. Importance of mirror neurons and masturbatory

guilt has been stated. Subject’s behavioral changes were analyzed by researchers through online media

(interface). Non pharmacological application has been emphasized to heal the patient with PCOS, a medical

condition. This is a six month long pilot study. A patient oriented affordable management plan has remained

the focus of the study.
Health Status of Assam: A District Level Analysis
Authors: Ajijur Rahman
Published: February 2021

Health is an important indicator of HDI which is specially designed to assess the economic developmentof countries. Access to quality health service at an affordable cost for the common masses is the primerequirement for the overall development of the country. Quality human resource is associated with the qualityhealth and educational services available in the country. Every country spends a percentage of their GDP forhealth and education sector. Every state government too adopts some scheme and programmes in the healthsector. The government of Assam has been adopting many schemes in the health sector since independence.In order to understand the health status of Assam, it is imperative to examine the different health facilitiesavailable in the health sector of Assam. In this paper attempt has been made to examine the health statusof Assam in general and tried to explore the district-wise analysis of health status. By considering sevenindicators, with the help of performing index specially developed to assess the performance level of thedifferent districts. The districts have been classified as Poor, Medium and Good performing districts basedon the index value
Factors in Codeswitching in a Japanese University Context
Authors: Shibata Naoya
Published: February 2021

In order to develop communication skills in English as a foreign language (EFL), learners and instructors are generally expected to use English as the main language and avoid speaking Japanese in English classes in principle (MEXT, 2014). In tertiary educational contexts, as many English classes are taught by teachers from other countries, the main language used in the class is likely to be English. However, codeswitching frequently occurs in bilingual and multilingual contexts (Jenkins, 2015). Therefore, codeswitching can be found even in classes with ostensibly English-only instruction. Possible factors need to be explored because it is essential to understand the sociocultural factors within the foreign language classroom that underline codeswitching and this will aid educators in realising the positive use of the first language in specific situations. This paper uses a descriptive case study involving 20 first-year university students in order to explore the factors underlying codeswitching in two 90-minute ‘English-only instruction’ classes, by analysing class observations and voice-recorded classroom data. Results illustrated that both students and the instructor changed their codes for particular purposes. Therefore, codeswitching can have an effective role in having longer conversations between students and disciplining students in English classes.
中等教育と高等教育を含め、英語のみで行う授業の概念の普及により、学習者と指導者は原則英語を主要な言語として用い、日本語の使用を避ける必要があると考えられている。しかしながら、コードスイッチングは第二言語環境もしくは多言語環境下で頻繁に起きるものである(Jenkins,2015)。従って英語のみで行う授業内でおいてもコードスイッチングは見られ、その要因を調査する必要がある。本研究では主に大学での授業見学と録音資料を用いて 2 回の 90 分授業内に起きるコードスイッチングの要因を調査した。結果として、学習者たちと指導者の両方が特定の目的をもってコードスイッチングを使用した。以上のことからコードスイッチングは学生間の会話を長くすることと授業内において学生たちを指導する際に効果的な役割を担っていることが分かった。
Bioresources of the Arctic seas: current state, effect of climate and anthropogenic changes.
Authors:   Murmansk Marine Biological InstituteRAS, Makarov M.V. , Matishov G.G. ,   Murmansk Marine Biological InstituteRAS, Moiseev D.V. ,   Murmansk Marine Biological InstituteRAS, Malavenda S.V. ,   Murmansk Marine Biological InstituteRAS, Dvoretskiy A.G. ,   Murmansk Marine Biological InstituteRAS, Druzhkova E.I. ,   Murmansk Marine Biological InstituteRAS, Ezhov A.V. ,   Murmansk Marine Biological InstituteRAS, Ilyin G.V. ,   Murmansk Marine Biological InstituteRAS, Karamushko O.V. ,   Murmansk Marine Biological InstituteRAS, Berdnikov S.V. ,   South Scientific Center of the Russian Academy of Sciences
Published: February 2021

Article present the main results of the investigations deal withthe program of the Presidium Russian Academy of Science “Bioresourcesof the Arctic seas of Russia: current state, the effectof natural changes and anthropogenic impacts, scientific foundations and perspectives for use”and linked researches.
HISTORY OF STUDYING THE WEIGHED SEDIMENTARY SEDIMENT AND SEDIMENT FLOWS (MURMAN AND KAREL COAST),AT THE MURMAN MARINE BIOLOGICAL INSTITUTE
Authors:   Murmansk Marine Biological Institute RAS, Mityaev M.V. , Gerasimova V.V. ,   Murmansk Marine Biological Institute RAS
Published: February 2021

The work reflects the results of many years of research on modern lithodynamics on the coasts of the Barents and White Seas,employees of the Murmansk Marine Biological Institute.
MAIN AREAS AND RESULTS OF THE BENTHOS RESEARCH IN THE BARENTS SEA BY THE MURMANSK MARINE BIOLOGICAL INSTITUTE IN 2015–2019
Authors:   Murmansk Marine Biological Institute RAS, Pavlova L.V.
Published: February 2021

The results of five-year studies (2015–2019) of the laboratory of zoobenthos MMBI RAS on the impact of environmental factors, climate change and pollution on the species diversity, structure and abundance of bottom fauna in the Barents Sea were considered. The abundance and diversity of bottom communities and taxocenoses were higher in the most warm Atlantic water masses. The warming of the Arctic contributes to increased diversity of the Barents Sea benthos, increased biological invasion in the northern seas, and maintenance of diversity in the polluted ecosystem of the Kola Bay. The technology of biomonitoring of climate change using littoral populations of invertebrates is proposed.
RED KING CRAB IN THE COASTAL BARENTS SEA: A REVIEW OF MMBI STUDIES
Authors:   Murmansk Marine Biological Institute RAS, Dvoretsky A.G.
Published: February 2021

In 1960th, red king crab was intentionally introduced into the Barents Sea. This species has formed a new self-sustaining population. In Russian waters, the commercial fishery of red king crab was started in 2004. Non-indigenous status and high commercial value of the crab have led to growing interest in the study of its biology and ecology. Red king crab has been intensively studied by specialists of Murmansk Marine Biological Institute to evaluate the role of this crab in local benthic communities and provide a theoretic basis and important applications for fishery science. New data on the population dynamics, symbiotic relationships, feeding and reproduction of red king crab have been obtained from long-term studies in coastal waters of the Barents Sea. Significant results of these studies are presented in this review.
THE STATUS OF SEA BIRD POPULATIONS AND FACTORS DETERMINING THEIR DEVELOPMENT IN THE BARENTS SEA
Authors:   Murmansk Marine Biological Institute RAS, Krasnov Yu.V. , Ezhov A.V. ,   Murmansk Marine Biological Institute RAS
Published: February 2021

In 2013–2019, observations on Arctic archipelagoes Novaya Zemlya and Franz-Josef Land were made. A series of multiannual monitoring of seabird colonies on the Murman coast (Kola Peninsula) were continued. The results show that large-scale negative effects on seabird populations mostly occur in areas of Atlantic water masses in the southwestern Barents Sea. On the coasts and islands ofMurman, considerable fluctuations of the number of kittiwakes and guillemots imposed on the general decreasing trend were noted. Within the Arctic water masses at Franz-Josef Land and Novaya Zemlya, the conditions of the colonies were more favorable. Geolocation data loggers helped to establish wintering and pre-breeding areas of kittiwakes and guillemots in the Barents Sea. Degradation of the seabird colonies is explained by oceanographic changes in the southern Barents Sea, along with the influence of integrative drivers such as food stock, i. e., presence and availability of capelin, and thermal conditions of the water masses determining its distribution in coastal waters.
RESULTSOFPARASYTOLOGICALRESEARCHESOFMMBIIN2015–2019
Authors:   Murmansk Marine Biological Institute RAS, Kuklin V.V. , Kuklina M.M. ,   Murmansk Marine Biological Institute RAS
Published: February 2021

The most important results of research on seabirds parasitology conducted at the Murmansk Marine Biological Institute in 2015–2019 are presented. Causal relationships between the distribution of hosts and the spread of helminths are determined. Similarities and differences of parasitic systems in different geographical areas are established. A more complete understanding of the parasitic-host relationship between seabirds and their helminths is obtained. Direct and indirect impact of helminths on hosts at the physiological and biochemical levels are described.
DEVELOPMENT AND USE OF VULNERABILITY MAPS FOR SEA COASTAL ZONES FROM OIL: PROBLEMS, SOLUTIONS, PROSPECTS
Authors:   Murmansk Marine Biological Institute RAS, Shavykin A.A. , Karnatov A.N. ,   Murmansk Marine Biological Institute RAS
Published: February 2021

Sea-coastal vulnerability maps to oil included in oil spill response plans minimize damage from spills and response operations themselves. Russian and foreign existing methods for constructing maps are not completely correct, since they are based on calculations using ordinal values, which is unacceptable. There are some problems in case of refusal from ranks: selection of uniform units for measuring density of biota distribution; assessment of vulnerability coefficients for biota living in the water column or on its surface. Possible solutions of these and other problems are given. The adoption of a unified Russian method of vulnerability mapping is discussed.
Bacterioplankton`s structural characteristics of the Kola and Motovskiy bays in October 2017.
Authors:   Murmansk Marine Biological Institute RAS, Vashchenko A.V. , Maksimovskaya T.M. ,   Murmansk Marine Biological Institute RAS
Published: February 2021

The work contains the results of autumn bacterioplankton studies in the coast of the Barents Sea on the example of the Kola and Motovskiybays. Hydrobiological conditions are described. New data on the abundance, biomass, and size and morphological composition of bacterial cells are presented. The distribution of quantitative parameters in the water column was studied. The trophic status of the water areas of the bays was determined.
Distribution and seasonal dynamics of bacterioplankton along the westernborder of the Barents Sea.
Authors:   Murmansk Marine Biological Institute RAS, Venger M.P.
Published: February 2021

The structural characteristics of bacterioplankton were studied in the waters of the Cape`s Nordkap (cut I) and Zuydkap (cut II) of Mezhvezhiy island. Its abundance and biomass in the upper part of the photic layer of coastal and Atlantic waters in cut I was comparable and increased from the late spring to the summer season. Moreover, in cuts I and II, the values of summer maximum corresponded to the zone of the Polar Front and adjacent Arctic waters. By the beginning of the winter season, the level of development of communities in waters of different genesis decreased everywhere, but still did not reach the minimum, observed insummer in layers deeper than 200 m. The structure of bacterioplankton was determined by single cells of the smallest size, mainly of a cocci-form. The arrival of rod-shaped bacteria (contribution to the total biomass could reach 50%) was recorded in the summer period.
Study on changes in morphometric parameters of gray seal (Halichoerus grypus) under parturition and milk-rearing of pups.
Authors:   Murmansk Marine Biological Institute RAS, Zavoloka P.A.
Published: February 2021

In the study, morphometric indicators of female grey seals were measured to detect changes in their size characteristics during various physiological phases of ontogenesis, including molting, pregnancy, pup and feeding in conditions close to natural. It was found that the pup itself slightly affected the growth of a Mature female seal, while feeding was the most energy-consuming, causing further deviations in the weight gain.
Vulnerability coefficients of marine mammals to oil on Kola Bay example.
Authors:   Murmansk Marine Biological Institute RAS, Karnatov A.N.
Published: February 2021

Vulnerability coefficients of marine mammals to oil were calculated for the Kola Bay based on the potential impacts, sensitivity and recoverability. For the sensitivity, a film thickness of 5 mm was assumed, at which negative effects from the inhalation of hydrocarbons can appear, and 0.1 mm as inactive film thickness on the marine mammals. The values of probability impact of oil on pinnipeds –1 % and cetaceans –0.1 % were adopted according to the time which animal spend diving and during the surface. Given the number of marine mammals in the Barents Sea and the Kola Bay, the recovery time for marine mammals in bay is accepted as 1 year.
Sedimentation in the Sturfjord straight (Svalbard) under climate change.
Authors:   Murmansk Marine Biological Institute RAS, Meshcheryakov N.I.
Published: February 2021

Study of the processes of modern sedimentation in the Sturfjord strait, a vast area of discharge of glacier runoff from the Svalbard archipelago, were carried out.The granulometric composition of bottom sediments was studied, on the basis of which conclusions were drawn about changes in sedimentation conditions in the strait.It is shown that sedimentary material enters the strait due to fluvioglacial flows. The role of ice transport is weakened. Since the middle of the last century, the type of sediment in the sedimentation basin has changed.
Fish diversity of the Tazovskaya Bay during summer of 2019.
Authors:   Murmansk Marine Biological Institute RAS, Chaus S.A.
Published: February 2021

Species composition of fish in the central area of the Tazovskaya Bay of the Kara Sea during summer of 2019 was considered. At whole 11 species of fish were found, most of which are from the family Coregonidae. Obtained information about abundance and biomass were compared with data of the previous years.
Earth-termination system for onshore wind Turbines.
Authors:   Northern Energetics Research Centre, Belova Liubov A.
Published: February 2021

The earth-termination system for towers of ground-based wind turbines in addition to protective and functional grounding provides lightning protection grounding, which is especially important since the wind turbine is susceptible to lightning strikes. If insufficient protective measures are taken, the risk of damage to a wind turbine due to a lightning strike increases. Therefore, a well-thought-out built-in grounding system for wind turbine towers is needed, which would function as necessary and guarantee long-term mechanical strength and corrosion resistance. The configuration of grounding systems for wind turbines is discussed in IEC 61400-24, which deals with the topic of lightning protection for wind turbines, including detailed information on the choice of lightning protection measures and surge protection. It is advisable to create a lightning protection concept at the initial stage of planning a wind turbine in order to avoid later costly repairs and retrofitting.
The role of the Kola nuclear power plant in Murmansk region energy.
Authors:   Northern Energetics Research Centre, Kuznetsov Nikolai M. , Minin Valerii A. ,   Northern Energetics Research Centre
Published: February 2021

The determining value of the Kola NPP in the structure of the Kola electric power system is shown. The mutually complementary operation of the 1,760 MW KAES with seventeen hydroelectric power stations with a capacity of about 1,600 MW and two 240 MW thermal power plants makes the region's power supply system unique, producing the cheapest electricity in the North-West of Russia. The issues related to the further extension of the operating life of the existing nuclear power plant and the construction of theKola NPP-2 in the future are considered.
Methods of group classification based on the theory of multisets in the problem of localizing zones with different levels of seismic activity during mining.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Zuenko A.A. , Fridman O.V. ,   Institute for Informatics and Mathematical Modelling KSC RAS, Zhuravleva O.G. ,   Mining Institute KSC RAS, Zhukova S.A. ,   Mining Institute KSC RAS
Published: February 2021

The work is dedicated to assessing the applicability of supervised group classification methods developed on the basis of multiset theory for solving the problem of identifying zones with different degrees of seismic activity (using the example of one of the sections of the highly stressed rock massif of the Kukisvumchorr apatite-nepheline deposit). The initial objects for classification procedures are spatial cells into which the fieldis divided. Each spatial cell is described by a certain set of factors that, according to experts, have an impact on the occurrence of seismic events in a given cell. An original representation of spatial cells (their groups) as a set of multisets is proposed. Studies have been carried out aimed at identifying the influence of various options for presenting the initial data on the result of classification procedures. Representation of objects described by quantitative and / or qualitative features and existing in several versions (copies) in the form of multisets makes it possible not to transform qualitative features into numerical ones when performing clustering procedures and use methods of group classification of objects. Generalized decision rules of group classification for assigning objects (spatial cells) to four classes of seismic hazard are obtained. In contrast to the currently widely used technologies based on the neural network approach, in this work, the training result is not a “black box” in the form of a trained neural network, but a set of rules that can be easily interpreted, which increases the confidence of end users in decision-making procedures.
Training and application ofneural network language model for ontology population.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Lomov P.A. , Malozemova M.L. ,   Institute for Informatics and Mathematical Modelling KSC RAS
Published: February 2021

The article considers one of the subtasks of ontology learning -the ontology population, which implies the extension of existing ontology by new instances without changing the ontology structure. A brief overview ofexisting ontology learning approaches and their software implementations is presented. A highly automated technology for ontology population based on training and application of the neural network language model to identify and extract potential instancesof ontology classes from domain texts is proposed. The main stages of its application, as well as the results of its experimental evaluation and the main directions of its further improvement are considered.
Overview of transport and logistics simulation models of the AnyLogic cloud platform.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Neupokoeva E.O. , Bystrov V.V. ,   Institute for Informatics and Mathematical Modelling KSC RAS, Malygina S.N. ,   Institute for Informatics and Mathematical Modelling KSC RAS
Published: February 2021

The article is devoted to the analysis of existing simulation models in the field of transport logistics. The overview presented in this paper includes a brief description of some models that are publicly available on the AnyLogic Cloud platform. For each model considered, its advantages and disadvantages are given, and the possibilities of using their components for the development of an original multi-model complex of the transport and logistics system of the Arctic region are noted.
Neural network models in the problems of semantic analysis of natural language texts.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Shishaev M.G.
Published: February 2021

The paper deals with the problem of text analysis focused on the formation of a semantic model of the subject area. A two-stage structure of the problem of semantic analysis is proposed, and the typology of text models used to determine features and form a target model is considered. Examples of the application of the neural network approach to various problems of the analysis of natural language texts are given.
Use of specialized computational devices on the node of the desktop grid system for the solve of combinatorial problems.
Authors:   Institute for Systems Analysis RAS, Albertian A.M. , Kurochkin I.I. ,   Institute for Information Transmission Problems RAS
Published: February 2021

The paper discusses the use of specialized Intel Xeon Phi devices in a desktop grid system. As an example of the successful use of specialized devices, the combinatorial problem of finding diagonal Latin squares is given. Features of implementation of the computing application are discussed. The results of work of a computer application in multithreaded modes on different processors andspecialized devices are given.
Rate of a gain of gross national product as regress from internal and external factors.
Authors:   FRC Computer Science and Control RAS, Dubovsky S.V.
Published: February 2021

The internal and external factors influencing the economic growth of the countries, in particular, Russia, are analyzed. A macro model is proposed in the form of a regression, where on the left the GDP growth rate, and on the right the regressors –the main control effects: the employment growth rate, the product of the share of gross savings in GDP on the number of employed specialists in R & D, the growth rate of oil prices on the world market. Computational experiments are carried out to estimate regression parameters on the statistics of Russia. The contributions of various factors to the economic growth rate are estimated. Conclusions are given.
Application of n-tuple algebra for modeling and analysis of uncertainties in knowledge.
Authors:   Institute for Problems in Mechanical Engineering RAS, Kulik B.A. , Fridman A.Ya. ,   IInstitute for Informatics and Mathematical Modelling KSC RAS
Published: February 2021

To model and analyze uncertainties in artificial intelligence, non-classical, in particular, non-monotonic and modal logics are often used, since classical logic is believed to poorly fit for such an analysis. This paper proposes some opportunities to apply a unified approach to analysis of various types of uncertainty based on n-tuple algebra earlier developed by the authors.
The role of situational centers in regional security management under digital economy.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Masloboev A.V. , Putilov V.A. ,   Institute for Informatics and Mathematical Modelling KSC RAS
Published: February 2021

The role of situational centers in the regional security management under digital economy is considered.Situational center evolution and legal regulations in Russia are represented. Goals and objectives of situational center application forpublic and regional administration are defined. Development problems and lines of the distributed situational center system are discussed. Situational center concept description of Murmansk region is given and its upgrading necessityis justified.
Structure of integrated conceptual spaces in interdisciplinary projects.
Authors:   Institute for Informatics and Mathematical Modelling KSC RAS, Oleynik A.G. , Fridman A.Ya. ,   Institute for Informatics and Mathematical Modelling KSC RAS
Published: February 2021

Basic principles to develop technologies and methods of intelligent situational analysis for information and analytical support of the system (network) of cognitive situational centers of the Arctic zone of the Russian Federation based on modeling situations in generalized conceptual spaces have been developed. As anexample, the component composition of the complex conceptual space of the regional socio-economic system includes “subject” conceptual spaces of freshwater ecosystems in the western part of the Arctic zone of the Russian Federation and the lower atmosphere of the Earth at high latitudes. An approach to the formation of a complex conceptual space based on "subject" conceptual spaces and capable of providing a classification of situations in industrial and natural complexes from an interdisciplinary point ofview is proposed.
Search for a saddle point of a convex-concave stochastic game by the adaptive method of mirror descent.
Authors:   Moscow Institute of Control Sciences RAS, Nazin A.V.
Published: February 2021

A stochastic game problem of 2 persons with a zero sum is considered, leading to the search for a saddle point of the game function based on the gradient approach. We study mirror descent algorithms, both adaptive and non-adaptive. The main results are proved. An illustrative example is discussed.
Macro-systems and megaprojects: similarities and differences.
Authors:   Moscow FRC Computer Science and Control RAS, Orlova E.R.
Published: February 2021

In the article similarities and differences of such concepts as macro-system and mega-project are analyzed. A conclusion is made that megaprojects can be regarded as a variety of macro-systems, i.e. systems that consist of a multitude of interconnected sub-systems and it is often possible to evaluate macro-systems' functioning by the same criteria as in case of mega-projects, i.e. social efficiency.
Kustomisasi Simbol Peta Laut Indonesia pada Perangkat Lunak Caris PCC 2.15
Authors: Tasina Tasina , Ibrahim Ahmad Lufti , Putra Eko Bayu Dharma
Published: February 2021

Kustomisasi simbol peta laut bertujuan untuk membuat desain layout peta, memahami bahasa pemrograman untuk mengubah dan memodifikasi desain layout peta, membuat dan memodifikasi kode-kode bahasa eXtensible Markup Language (XML) yang terdapat pada sistem perangkat lunak CARIS PCC 2.15, dan mengatur atau menyesuaikan tampilan simbol titik, garis, area dan teks pada CARIS PCC 2.15. Penyesuaian simbol menggunakan metode annotationrules, yang mana dapat mengintegrasikan antar file-file yang terdapat pada sistem perangkat lunak CARIS PCC 2.15. Metode annotationrules dilaksanakan berurutan dengan mengatur file-file yang telah tersedia sehingga menjadi satu aliran yang dapat mengeksekusi bahasa pemograman XML pada file tersebut. Penambahan dan pembuatan script pada file berformat .XML dapat mengoptimalkan sistem perangkat lunak CARIS PCC 2.15 untuk pembuatan peta laut Indonesia yang lebih efektif dan efisien sesuai dengan kaedah kartografi. Hasil dari kustomisasi adalah pembuatan desain layout, yang meliputi pengaturan pola warna, pengaturan singkatan keterangan simbol dalam beberapa bahasa yakni bahasa Inggris, bahasa Indonesia dan dual bahasa. Kemudian mengatur dan menyesuaikan simbol titik, pembuatan dan penyesuaian simbol garis, pembuatan dan penyesuaian simbol area dan pengaturan teks dengan menggunakan dual bahasa sesuai dengan kebutuhan Dispeta Pushidrosal yang berstandar IHO S-4 dan Peta No. 1.
Comorbidities and Negative Prognostic Factors in Lebanese Patients Presenting with Acute Decompensated Heart Failure with Preserved Ejection Fraction: A Multicenter Retrospective Study
Authors: El Khoury Joseph , Bachnak Ronza , El Assaad Hiba , Damaj Nahed , Terro Jad
Published: February 2021

Background: Congestive heart failure is responsible for repeated hospital admissions. It is classified into three types: (1) Heart Failure with reduced ejection fraction, (2) Heart failure with mid-range ejection fraction, and (3) Heart failure with preserved ejection fraction (HFpEF). It is essential to describe the risk factors of HFpEF patients' profiles as targeting them is crucial for management. Aim: Our retrospective study aims to identify the clinical and echocardiographic characteristics associated with HFpEF and its mortality among hospitalized patients with acute decompensated heart failure. Methods: 390 patients of all age groups presenting with acute heart failure decompensation at Mount Lebanon Hospital (MLH) and Middle East Institute of Health (MEIH, Bsalim) were recruited retrospectively between January 2014 and December 2016. We included 133 cases of HFpEF and collected data on each case including: baseline characteristics and comorbidities, electrocardiograms, laboratory studies, and echocardiographic parameters. Results: The 133 Lebanese patients having HFpEF were elderly (76 ± 10 years), with predominantly female gender (56%). Hypertension (87.96%) and diabetes (53.38%) were the most frequently reported comorbidities. The overall in-hospital mortality was 4.5%. Data was compared between living and deceased patients and the frequency of valvular heart disease (p=0.005) and chronic kidney disease (p=0.018) was significantly higher among deceased patients. Right ventricular (RV) dilation on echocardiography was significantly correlated with mortality. Elevated troponin, increased creatinine, hypochloremia, hyponatremia, and anemia were all lab markers associated with increased mortality (p<0.05). Conclusion: Patients with HFpEF represent 43.5% of all decompensated HF cases, with chronic kidney disease, valvular heart diseases, anemia and troponinemia, being the predominant risk factors for adverse clinical outcomes. HFpEF remains an enormous burden on cardiologists for appropriate evaluation, triage, and management.
The Decline and Fall of the Youngest Planetary Nebula
Authors: Balick Bruce , Guerrero Martín A. , Ramos-Larios Gerardo
Published: February 2021

The Stingray Nebula, a.k.a. Hen3-1357, appeared for the first time in 1990 when bright nebular lines and radio emission that had not been observed before were unexpectedly discovered. In the ensuing years, the nebula faded precipitously. We report changes in shape and large decreases in its nebular emission-line fluxes based on well-calibrated images obtained by the Hubble Space Telescope in 1996 and 2016. Hen3-1357 is now a “recombination nebula.”
Swift Multiwavelength Follow-up of LVC S200224ca and the Implications for Binary Black Hole Mergers
Authors: Klingler N. J. , Lien A. , Oates S. R. , Kennea J. A. , Evans P. A. , Tohuvavohu A. , Zhang B. , Page K. L. , Cenko S. B. , Barthelmy S. D. , Beardmore A. P. , Bernardini M. G. , Breeveld A. A. , Brown P. J. , Burrows D. N. , Campana S. , Cusumano G. , D’Aì A. , D’Avanzo P. , D’Elia V. , Pasquale M. de , Emery S. W. K. , Garcia J. , Giommi P. , Gronwall C. , Hartmann D. H. , Krimm H. A. , Kuin N. P. M. , Malesani D. B. , Marshall F. E. , Melandri A. , Nousek J. A. , O’Brien P. T. , Osborne J. P. , Palmer D. M. , Page M. J. , Perri M. , Racusin J. L. , Sakamoto T. , Sbarufatti B. , Schlieder J. E. , Siegel M. H. , Tagliaferri G. , Troja E.
Published: February 2021

On 2020 February 24, during their third observing run (“O3”), the Laser Interferometer Gravitational-wave Observatory and Virgo Collaboration detected S200224ca: a candidate gravitational wave (GW) event produced by a binary black hole (BBH) merger. This event was one of the best-localized compact binary coalescences detected in O3 (with 50%/90% error regions of 13/72 deg2), and so the Neil Gehrels Swift Observatory performed rapid near-UV/X-ray follow-up observations. Swift-XRT and UVOT covered approximately 79.2% and 62.4% (respectively) of the GW error region, making S200224ca the BBH event most thoroughly followed-up in near-UV (u-band) and X-ray to date. No likely EM counterparts to the GW event were found by the Swift BAT, XRT, or UVOT, nor by other observatories. Here, we report on the results of our searches for an EM counterpart, both in the BAT data near the time of the merger, and in follow-up UVOT/XRT observations. We also discuss the upper limits we can place on EM radiation from S200224ca, as well as the implications these limits have on the physics of BBH mergers. Namely, we place a shallow upper limit on the dimensionless BH charge,

, and an upper limit on the isotropic-equivalent energy of a blast wave E < 4.1 × 1051 erg (assuming typical GRB parameters).
Reconnection-driven Particle Acceleration in Relativistic Shear Flows
Authors: Sironi Lorenzo , Rowan Michael E. , Narayan Ramesh
Published: February 2021

Particle energization in shear flows is invoked to explain nonthermal emission from the boundaries of relativistic astrophysical jets. Yet the physics of particle injection, i.e., the mechanism that allows thermal particles to participate in shear-driven acceleration, remains unknown. With particle-in-cell simulations, we study the development of Kelvin–Helmholtz (KH) instabilities seeded by the velocity shear between a relativistic magnetically dominated electron–positron jet and a weakly magnetized electron–ion ambient plasma. We show that, in their nonlinear stages, KH vortices generate kinetic-scale reconnection layers, which efficiently energize the jet particles, thus providing a first-principles mechanism for particle injection into shear-driven acceleration. Our work lends support to spine-sheath models of jet emission—with a fast core/spine surrounded by a slower sheath—and can explain the origin of radio-emitting electrons at the boundaries of relativistic jets.
Extending the Frequency Reach of Pulsar Timing Array-based Gravitational Wave Search without High-cadence Observations
Authors: Wang Yan , Mohanty Soumya D. , Cao Zhoujian
Published: February 2021

Gravitational wave (GW) searches using pulsar timing arrays (PTAs) are assumed to be limited by the typical average observational cadence of 1/(2 weeks) for a single pulsar to GW frequencies ≲4 × 10−7 Hz. We show that this assumption is incorrect and that a PTA can detect signals with much higher frequencies, which are preserved in the data due to aliasing, by exploiting asynchronous observations from multiple pulsars. This allows an observation strategy that is scalable to future large-scale PTAs containing O(103) pulsars, enabled by the Five-hundred meter Aperture Spherical Telescope and the Square Kilometer Array, without requiring a higher per-pulsar observation cadence. We show that higher frequency GW observations, reaching up to 4 × 10−4 Hz with an Square Kilometer Array-era PTA, have significant astrophysical implications, such as (i) a three orders of magnitude better constraint than current high-cadence observations on GW strain in the [10, 400] μHz band, and (ii) sensitive tests of the no-hair theorem in the mass range of supermassive black hole binaries using their inspiral, merger, and ringdown signals.
Practical Emergency Ultrasound Flashcards with Augmented Reality in Teaching Point-of-Care Ultrasound in ER
Authors: Ienghong Kamonwon , Kotruchin Praew , Tangpaisarn Thanat , Apiratwarakul Korakot
Published: February 2021

BACKGROUND: The use of point-of-care ultrasound (POCUS) has recently proposed the integration of ultrasound into undergraduate medical education. However, the evidence of learning tool for this integration has not been well studied.
AIM: The aim of this study was to compare the levels of knowledge improvement of the 6th year medical students before and after receiving the POCUS training in two ways: By employing the traditional methods and by utilizing the new learning tool.
METHODS: The practical ultrasound flashcards were developed by a Thai physician. In the study, the 6th year medical students were enrolled and randomized to become members of either the flashcard group or the control group. Participants in both groups attended a 4-week ultrasound training course. Before and after the training course, all students were evaluated using the multiple-choice questions. In addition, the subjects’ attitudes and perceptions about the flashcards were evaluated using a questionnaire.
RESULTS: A total of 46 students participated in this study and were randomly assigned to either the flashcard group (n = 23) or the control group (n = 23). It was discovered that the students in the flashcard group had performed better on the POCUS knowledge post-test than those in the control group had. Most students had been satisfied with the flashcards (mean 5 Likert scores = 4.48). However, the students had rated their confidence score to perform POCUS at 3.96 out of 5.0.
CONCLUSIONS: Medical students who used the ultrasound flashcards to learn POCUS had resulted in better knowledge scores rather than the others who attended the standard ultrasound training course only. However, it was not possible to evaluate the practical skills and the clinical decision-making processes in this study.
Scalenus Syndrome: A Literature Review
Authors: Golden Nyoman , Shahab Ali , Mahadewa Tjokorda Gde Bagus , Mardhika Putu Eka , Awyono Steven , Putra Made Bhuwana , Tombeng Marthinson
Published: February 2021

Scalenus syndrome is often diagnosed as thoracic outlet syndrome (TOS). We performed literature searching reporting scalenus syndrome and we narratively describe the finding in this review. Scalenus syndrome is a unique clinical entity and commonly occurred. This syndrome can be classified into neurogenic TOS (nTOS) on the interscalene triangle, which also related to myofascial pain syndrome. There are three factors that contribute to scalenus syndrome, which are congenital anomaly, trauma, traumatic myositis, and hypertrophy of scalenus anterior muscle. The symptoms of scalenus syndrome can be divided into two types, which are neurologic and vascular symptoms. The neurologic manifestation can originate from the somatic and sympathetic nervous system. There is microscopic evidence of inflammation, hypertrophy, degeneration, and fibrosis of scalenus anterior muscle in scalenus syndrome cases. Scalenus syndrome can be treated surgically or conservatively. Non-surgical or conservative treatment can be applied to mild scalenus syndrome, especially nTOS, in the initial phase. Surgical management should be performed in persistent symptoms of nTOS or involving subclavian artery manifesting as arterial TOS (aTOS). Scalenus syndrome has quite similar clinical manifestation as nTOS and aTOS. However, this clinical syndrome should be considered as different entity because of different pathophysiology compared to TOS. Scalenus syndrome is caused by dynamic pathology of anterior scalenus muscle.