bluuebunny/crossref_metadata_2025 huggingface dataset:
ACTUALIDAD DE LA ANEMIA INFANTIL EN LA REGIÓN ICA
Authors: HUAMÁN-NAVARRO ALEX
Published: March 2020

La anemia es considerada a nivel mundial como un problema de salud pública, las mujeres en la edad fértil, las embarazadas y los niños menores de 5 años son un grupo especial con mayor riesgo de desarrollarla (1). En el Perú, actualmente, la anemia infantil afecta al 43,6% de los niños y niñas menores de 36 meses de edad, lo que significa que cerca de 743 mil niños menores de 3 años padecen esta afección (2).

En el departamento de Ica, el 43,1% de niños y niñas entre 6 y 35 meses de edad tienen anemia (3), que, si bien es cierto este se encuentra mínimamente por debajo del promedio nacional, no excluye que no siga siendo un problema de salud pública para la región. Según el último reporte del Sistema de Información de Indicadores de Estado Nutricional (SIEN), en lo que va del año, la provincia de Chincha es la que refleja un mayor porcentaje de anemia en niños menores de 5 años (33,86%), y la que menos expresa anemia en ese rango de edad es Pisco (12,28%)(4).
Modeling Method for Leveraging Data Quality in Healthcare Big Data
Authors:   Assistant Professor, Department of Master of Computer Applications, Bangalore Institute of Technology, Bengaluru, India., K.* Madhu H. , Ramesh Dr. D. ,   Professor and HOD, Sri Siddaratha Academy of Higher Eduction, Tumkur, India.
Published: March 2020

An accurate diagnosis of the healthcare-based Big Data will always demand a significant level of quality in its input data itself, which is a serious level of concern in the area of healthcare analytics. Review of existing approaches shows that there has been various learning-based approaches being used for disease diagnosis which often ignores various issues viz. data aggregation, presence of error prone data, accuracy etc. Therefore, this paper presents a novel framework which offers cost effective modeling of the aggregation process of healthcare-big data followed by facilitating solution towards identifying and rectifying all the positions within a database system where there are presence of an error. The proposed system offer a mechanism where the error-prone data has been identified and substituted with data of better quality in order to offer better analytical outcomes. The study offers a strong baseline in order to leverage the data quality in healthcare big data.
Performance and Efficiency Features of Bin Model Solar Instant Water Heater using Copper Plate Collector
Authors:   Department of Physics, Arignar Anna Government Arts College, Namakkal-India., Vikramprasad* K. , Sethupathi N. ,   Department of Physics, Arignar Anna Government Arts College, Namakkal-India., Maadeswaran P. ,   Department of Energy Studies, Periyar University, Salem, India., Mahalingam P. ,   Department of Chemistry, Arignar Anna Government Arts College, Namakkal-India.
Published: March 2020

The bin model solar instant water heater has been designed, fabricated and its performance has been evaluated in the Namakkal climatic conditions. Solar water heater is a required one, but it is expensive for rural people. In that case; the bin model solar instant water heater is a modern, simple and low cost system. This bin model solar instant water heater is fabricated without high cost components and the setup does not need the storage tank. This article presents and encompasses the technological developments of our setup. The performance and efficiency of bin model solar instant water heater is determined when using copper is an absorber part. The bin model solar instant water heater’s performance, efficiency, copper plate temperature, loss ratio, mass flow was calculated and presented. This bin model solar instant water heater is ecofriendly, it used for both domestic and industrial sectors.
Driving License Corroborator using Internet of Things and Data Mining Techniques
Authors:   Department of CSE, Sri Krishna College of Technology, Coimbatore, India, Selvy* Dr.P.Tamije , Balaji A.Ajay ,   Department of CSE, Sri Krishna College of Technology, Coimbatore, India, Selvam K.Angu ,   Department of CSE, Sri Krishna College of Technology, Coimbatore, India,, Arun R. ,   Department of CSE, Sri Krishna College of Technology, Coimbatore, India
Published: March 2020

Internet of Things (IoT) permits gadgets to be perceived and controlled remotely across existing community infrastructure, creating possibilities for introducing direct integration between the physical, global structures ensuring in progressed efficiency, accuracy. In step with recent statistics from the Ministry of Road Transport and Highways, 10,622 persons (past one year) below the age of eighteen lost their lives due to road crashes in Highways (India), accounting for 29 deaths every day. To disannul the shortcomings, License corroborator, the planned model assures the age of chauffeur (Driver) is above eighteen with positive authorization steps.
Embryotoxic and teratogenic effects of ‘Vitosept’ on white rats
Authors: Soltys M. P. , Rudyk H. V. , Gunchak V. M. , Gutyi B. V.
Published: March 2020

The effect of ‘Vitosept’ drug, based on sodium hypochlorite solution with high purity, obtained in a specially developed membraneless flow electrolyzer, on the embryotoxic and teratogenic properties in rats was investigated. To determine the embryotoxic effect of ‘Vitosept’ on the development of white rats offspring of the 1st generation, control and three experimental groups (G1, G2, G3) were formed from pregnant females. The females of the control group with a blunt probe were injected daily for 30 days with 5 ml of isotonic sodium chloride solution, and experimental ones with 5 ml of ‘Vitosept’ drug with different concentration of high purity sodium hypochlorite: Group I (G1) — 50 mg/l; Group II (G2) — 100 mg/l; Group III (G3) — 500 mg/l. The animals were observed. During the observation the condition and behavior of the females, the dynamics of body weight change, duration of pregnancy, and the course of birth were monitored. The results of the experiment were recorded after the slaughter of pregnant females (20th day of pregnancy) and in the postnatal period of development of the offspring. Studies have shown that the use of different concentrations of the drug ‘Vitosept’ in rats for 30 days before and during pregnancy has no embryotoxic and teratogenic effects. According to the indicators of the total, pre- and postimplantation lethality of embryos, there were no reliable changes in the structure and morphometry of internal organs and tissues in 20-day-old fetuses, and their development corresponded to the terms of pregnancy. There was no significant difference between the fertility of female rats in the test and control groups. The average number of fetuses per female was within 9 animals. The rats obtained from the females of the experimental groups were viable and did not lag behind in growth and development compared with the control animals, which generally characterizes the studied drug ‘Vitosept’ as non-toxic, lacking embryotoxic and teratogenic action
Diamond fraud analysis in detecting financial statement fraud
Authors: Diansari Rani Eka , Wijaya Arum Tri
Published: March 2020

This study aims to analyze the influence of variable pressure proxied by financial stability, personal financial need, financial targets, external pressure, the opportunity proxied by nature of the industry, ineffective monitoring, rationalization, and capability of the financial statement fraud. The sample used 72 manufactured company listing on the Indonesia Stock Exchange during the 2014-2017 period. Multiple linear regression test is used to test the influence of the independent variable on the dependent variable. The result showed that financial stability, the ratio of the change in total assets, and external pressure, as measured by leverage, showed an influence on financial statement fraud while the personal financial need, financial targets, nature of industry, ineffective monitoring, rationalization, and capability does not influence financial statement fraud.
A STUDY ON REHABILITATION AND
RESETTLEMENT PACKAGE OF POLAVARAM
PROJECT
Authors: Doradla Manovikas
Published: March 2020

This paper investigates the reasons of the failure for resettlement programmes in preventing the impoverishment of
people displaced by development projects. It is also concerned with the contribution that economics can make to the
improvement of resettlement theory and practice, in particular through political economy and choice experiment
methodologies.The investigation is carried out through a case study of the Polavaram dam in Andhra Pradesh,which will
lead to the submersion of 177 villages and the displacement of 200,000 people. The research originates from the
acknowledgement that the failure of resettlement programmes is determined at, and reflected through,the theoretical,
methodological and practical levels.
A LARGE MALIGNANT PERIPHERAL NERVE
SHEATH (MPNST) OF RADIAL NERVE- A RARE
CASE REPORT.
Authors: Thangjam Dhanabir , Singh L. Chittaranjan , Kamei Ramthaipou , Sinam Nehar , Amitkumar M.
Published: March 2020

Malignant peripheral nerve sheath tumour (MPNST) are rare, aggressive sarcomatous tumours of peripheral nerve
sheaths which can arise from preexisting neurofibroma or de novo.Sporadic origin accounts for nearly half of all MPNST
cases,while other cases occur in association with neurofibromatosis type 1 (NF1).The most common site is nerve trunks
of extremities like sciatic nerve. On literature search only four case reports of MPNST of radial nerve are published till
date.We report a case of 50 years old lady presenting with a large,firm,ovoid swelling measuring 7 cm x 8 cm over her
right arm with symptoms of neuropathy.The fine needle aspiration cytology report was a benign neurogenenic tumour.
MRI reported as a radial nerve sheath tumour. Core biopsy shows features of neurofibroma(NF).She was subjected to
treatment as a benign pathology but the final histopathological report was a low grade - malignant peripheral nerve
sheath tumour.
A Force–Voltage Responsivity Stabilization Method for Piezoelectric Touch Panels in the Internet of Things
Authors: Gao Shuo , Shao Mingqi , Guo Rong , Nathan Arokia
Published: March 2020

Piezoelectric force touch panels are extensively utilized as human-machine interfaces for 3-dimensional touch sensing in internet of things (IoT) applications. However, the unstable force voltage responsivity issue induced by different touch orientations limits the successful use of piezoelectric touch panels. In this article, a piezoelectric touch panel, which is sensitive to both capacitive and force stimulation, is assembled; and a touch orientation classification technique is developed to calibrate the detected force amplitude by training a machine learning model with finger induced capacitive information. Finally, a high stable force voltage responsivity of 87.5% is achieved experimentally.
Deep convolutional neural network based image spam classification
Authors: Srinivasan Sriram , R vinayakumar , V Sowmya , Krichen Moez , Noureddine Dhouha Ben , A Shashank , KP Soman
Published: March 2020

With the tremendous growth of the internet, cyberspace is facing several threats from the attackers. Threats like spam emails account for 55\% of total emails according to the Symantec monthly threat report. Over time, the attackers moved on to image spam to evade the text-based spam filters. To deal with this, the researchers have several machine learning and deep learning approaches that use various features like metadata, color, shape, texture features. But the Deep Convolutional Neural Network (DCNN) and transfer learning-based pre-trained CNN models are not explored much for Image spam classification. Therefore, in this work, 2 DCNN models along with few pre-trained ImageNet architectures like VGG19, Xception are trained on 3 different datasets. The effect of employing a Cost-sensitive learning approach to handle data imbalance is also studied. Some of the proposed models in this work achieves an accuracy up to 99\% with zero false positive rate in best case.
HUBUNGAN KEBIJAKAN PENERAPAN KAWASAN TANPA ROKOK DENGAN FREKUENSI MEROKOK PADA MAHASISWA DI YAYASAN IBNU SINA BATAM
Authors: Martha Elsusi , Kafit Muhammad
Published: March 2020

Tingginya frekuensi merokok masih menjadi salah satu masalah kesehatan masyarakat di Kota Batam. Di Yayasan Ibnu Sina Batam  baru menerapkan Kawasan Tanpa Rokok (KTR). Strategi untuk menekan tingginya frekuensi merokok atau pengendalian salah satu penyakit tidak menular dengan menerapkan kebijakan KTR. Tujuan penelitian ini adalah mengetahui hubungan kebijakan penerapan Kawasan Tanpa Rokok dengan frekuensi merokok pada mahasiswa Sekolah Tinggi di Yayasan Ibnu Sina Batam. Jenis penelitian ini analitik dengan rancangan penelitian cross sectional. Jumlah sampel pada penelitian ini adalah 100 responden yang diperoleh dengan metode proporsi sampling. Penelitian ini menunjukkan  ada hubungan antara fungsi tenaga pemantau KTR terhadap frekuensi merokok mahasiswa (p=0,000), ada hubungan antara kebijakan tertulis terhadap frekuensi merokok mahasiswa (p=0,027) dan ada hubungan antara media promosi terhadap frekuensi merokok mahasiswa (p=0,027). Berdasarkan hasil penelitian dan pembahasan terdapat hubungan antara fungsi tenaga pemantau KTR dengan frekuensi merokok, terdapat hubungan antara kebijakan tertulis dengan frekuensi merokok dan terdapat hubungan antara media promosi KTR dengan frekuensi  merokok pada Mahasiswa Sekolah Tinggi di Yayasan Ibnu Sina Batam.
HUBUNGAN GAYA HIDUP DENGAN KEJADIAN HIPERTENSI PADA LANSIA DI WILAYAH KERJA PUSKESMAS MEO-MEO KOTA BAU BAU
Authors: Taufiq La Ode Muhammad , Diliyanti Sri , Taswin  , Muriman Yusman
Published: March 2020

Hipertensi adalah peningkatan tekanan darah sistolik lebih dari 140 mmHg dan tekanan darah diastolik lebih dari 90 mmHg pada dua kali pengukuran dengan selang waktu lima menit dalam keadaan cukup istirahat/tenang. Tujuan penelitian ini untuk mengetahui hubungan antara pola makan, kebiasaan mengkonsumsi kafein, perlikau merokok,dan kebiasaan berolah raga dengan kejadian hipertensi pada lansia di wilayah kerja Puskesmas Meo-Meo. Jenis penelitian yang di gunakan adalah kuantitatif dengan desain penelitian survei analitik dengan metode cross-sectional study, tehnik pengambilan sampel dilakukan secara acak sederhana (simple random sampling).  Jumlah populasi dalam penelitian ini adalah seluruh Lansia yang ada di wilayah kerja puskesmas Meo-Meo dan sampel sebesar 130 orang. Analisis data menggunakan uji Chi-square. Berdasarkan hasil penelitian diperoleh Pola makan dengan  nilai p value =0,04 < 0,05, kebiasaan mengkonsumsi kafein dengan nilai p value = 0,932> 0,05, perilaku merokok dengan nilai p value= 0.667 > 0,05, dan kebiasaan berolahraga dengan nilai p value =0.038 < 0.05. Kesimpulan dari penelitian ini menunjukkan bahwa ada hubungan antara pola makan, kebiasaan berolahraga dengan kejadian hipertensi pada lansia di wilayah kerja puskesmas meo-meo dan tidak ada hubungan antara kebiasaan mengkonsumsi kafein, perilaku merokok dengan kejadian hipertensi pada lansia di wilayah kerja puskesmas meo-meo.
ANALISIS TINGKAT KEPUASAN PELANGGAN TERHADAP PELAYANAN ONLINE SHOP GIC
Authors: Hermansyah  , Veza Okta , Hernuning Nunik
Published: March 2020

Dalam meningkatkan kualitas pelayanan jasa harus diarahkan dan memperbaiki keterampilan dan kecakapan karyawan dalam menjalankan pekerjaannya. Banyaknya keluhan yang muncul sejak se-tahun terakhir dari para pelanggan mengindikasikan adanya kesalahan dalam pelayanan, padahal toko online ini memiliki banyak pelanggan dan sebagai salah satu distributor terbesar yang ada di Batam . Dengan melihat permasalahan yang ada, maka penelitian ini diarahkan untuk bagaimana meningkatkan kepuasan pelanggan, menggunakan lima dimensi dari service quality (Bukti Fisik, Kehandalan, Daya Tanggap, Jaminan dan Perhatian). Tujuan dari penggunaan dimensi Servqual dalam pengukuran kesenjangan gap  adalah untuk melakukan program perbaikan dalam tata cara memberikan pelayanan yang berorientasi terhadap kepuasan pelanggan. Teknik pengumpulan data menggunakan kuisoner yang diberikan kepada 80 responden dengan skala likert 1-5, setelah itu dilakukan uji validasi, reabilitas dengan menggunakan SPSS versi 20. Hasil dari penelitian ini meliputi lima dimensi service quality, sehingga diperoleh rata-rata gap di tiap dimensi : Bukti Fisik (Tangible) sebesar (-4,78), Kehandalan (Reability) sebesar (-7,78), Daya Tanggap (Responsive) sebesar (-12,78), Jaminan (Assurance) sebesar (-16,22), dan Perhatian (Empathy) sebesar (-4,89).  Dengan demikian, secara keseluruhan responden masih mempersepsikan kualitas pelayanan dari toko online ini sangatlah negatif.
Pelvis fracture: up to date
Authors: García-Chamorro Marta
Published: March 2020

Pelvic fractures are very frequent in the emergency department. Its diagnosis and its treatment sometimes can be difficult, specially in the junior orthopaedic surgeons. This up to date has the aim of making easier to understand how do the behave and how to treat them
Subacute osteomyelitis in index by human bite: a case report
Authors: López-Ortiz-Tallo Juan Carlos , Ferández-Sabaté Elena
Published: March 2020

Contiguous infections and systemic dissemination of pathogens are the most frequent causes of
osteomyelitis, being the S aureus the major causal agent in both cases. Osteomyelitis secondary to human
bite is a rare and severe complication of this wound mechanism. This lesions is difficult to diagnose in the
emergency department, both for its infrequently as the lack of information about the origin of the lesion on
the part of the patient, for fear of the medical-legal consequences. In addition, due to the variety of
aerobic and anaerobic pathogens, constitute a true therapeutic challenge. We present the case of an
osteomyelitis secondary to human bite, which presents all of the clinical and radiographic signs that should
make us suspect this pathology and begin the management quickly, as it represents the main prognostic
factor. The wound by human bite should be suspected and treated properly in the emergency epartment,
since the first 24 hours are crucial for the later forecast. The cooperation between specialists reduces the
risk of complications, being the emergency department the most important factor to its diagnosis
EXPERIENCE IN THE STUDY OF THE DURATION OF THE INFLUENCE OF OIL POLLUTION ON THE CHARACTERISTIC OF BIOELECTRIC RESISTANCE OF BIRCH (BETULA PENDULA ROTH)
Authors: Kurilo Yu. A. , Donets E. V. , Grigoriev A. I.
Published: March 2020

The study of bioelectric resistance (impedance) of woody plants by electrometric method under the influence of adverse factors, including oil sludge, is one of the adequate methodological approaches to assessing the state of forest biogeocenoses. The aim of the study is to study the peculiarities of the influ-ence of oil sludge pollution of soils on the duration of changes in the bioelectric resistance of the precam-bial tissue complex of birch trunks. The object of the study is the trees of the hanging birch (Betula pendu-la Roth.) growing in the basin of buffer ponds of JSC «Gazpromneft - ONPZ» (Omsk). The research area is the Central forest-steppe of the South of Western Siberia. The results of the studies were processed by standard methods of variational statistics, correla-tion, regression and variance one-factor analysis using the package Statistica 10. Comparisons of experience variants were carried out according to student and Fisher criteria. The dependence of elec-trical resistance of birch trunk PCT (precompiling complex tissues) on the level of oil sludge pollution of soils was studied. A recommendation for rapid assessment of the condition of birch trees in the con-ditions of oil sludge pollution by electrometric meth-od was developed. According to the results of our long-term studies, it can be noted that the duration of a significant negative impact of oil sludge on the electrical resistance precompiling complex tissues of birch trees in the forest-steppe zone of Western Sibe-ria is manifested within six years, and in the seventh year these differences are not reliable and already in the ninth year-these differences disappear (τfact > τ0.5). The results obtained can be used in screening studies of forest biogeocenoses and in the planning and or-ganization of bioreculture activities on the territory of sanitary protection zones of oil refineries and in areas of oil production and oil transportation.
Influence of Microcrack Healing Techniques on Tensile Strength of Asphalt
Authors: Sarsam Saad Issa
Published: March 2020

Asphalt concrete pavement practices repeated loading and environmental impacts and suffers distresses. Microcracks usually occurs at early stage of pavement life while the pavement can heal itself under controlled conditions. Microcrack healing process can be controlled and accelerated using various techniques. In this investigation, iron filling was implemented as partial substitute of sand to support the healing process while both induction and external heating techniques were adopted to control the healing using microwave and oven. Asphalt concrete specimens have been prepared with different percentages of iron filling and the corresponding required asphalt content. Specimens were subjected to repeated indirect tensile stresses for 600 and 1200 load repetitions. Specimens were allowed to heal using microwave and oven heating techniques. Specimens were subjected to another cycle of stress repetitions and the variation in the indirect tensile strength was detected before and after healing. The healing performance of the asphalt mixture specimens at different healing conditions was investigated by observing and testing the recovery of indirect tensile strength after healing. It was concluded that implementation of iron filling and induction heating by microwave can improve the healing and tensile properties of asphalt concrete as compared to the oven heating technique.
Расчёты усталостной прочности судовых корпусных конструкций
Authors: Kazanov G.T. , Nagaeva M.V.
Published: March 2020

Анализ проблем обеспечения надежности, живучести корпусов кораблей и судов, показывает, что дополнительные возможности для повышения точности и достоверности оценок ресурса конструкций на стадиях проектирования и эксплуатации открывает системное наблюдение за состоянием структуры материалов. Информация, получаемая путем обследования материала конструкций на стадиях изготовления, вместе с оперативными данными о состоянии кораблей и судов в эксплуатации позволяет прогнозировать их индивидуальный ресурс. Массовое увеличение количества высоконагруженных, а, следовательно, материалоёмких конструкций, поставило проблемы технической диагностики в ряд первоочередных. Наиболее остро разработка методов диагностики и прогнозирования остаточного ресурса стоит для судов, отработавших свой проектный эксплуатационный период. Одновременная замена такой огромной массы выработавших свой срок крупногабаритных конструкций нереальна даже для экономически развитых стран. Поэтому целесообразно ремонтировать подкреплением или восстановлением изношенные конструкции, которые получили в процессе эксплуатации определённую структурную поврежденность конструкционных материалов. Объективность информации о состоянии материала различных элементов конструкции зависит от точности получения и измерения интересующих величин. В статье рассматриваются варианты расчётов усталостной прочности, дополняющие и развивающие методологию прочностных расчётов судовых корпусных конструкций.

Analysis of the problems of ensuring the reliability and stability of ships and ships housings shows that the system monitoring of the state of the structure of materials opens up additional possibilities for improving the accuracy and reliability of estimates of the resource of structures at the stages of design and operation. Information obtained by examining the material of structures at the stages of manufacture, together with operational data on the state of ships and ships in operation, makes it possible to predict their individual life. The mass increase in the number of highly loaded, and therefore material-intensive structures, has put the problems of technical diagnostics in a number of priority. The most acute development of methods of diagnostics and forecasting of residual life is for ships that have worked out their design operating period. The simultaneous replacement of such a huge mass of long-term large structures is unrealistic even for economically developed countries. Therefore, it is advisable to repair worn structures by reinforcement or restoration, which received certain structural damage of structural materials during operation. The objectivity of information on the state of material of various structural elements depends on the accuracy of obtaining and measuring the quantities of interest. The article discusses the variants of fatigue strength calculations, complementing and developing the methodology of calculations of ship hull structures.
Оценка спектральной оптической толщины пламени в камере сгорания судового дизеля
Authors: Rudnev B.I. , Povalikhina O.V.
Published: March 2020

Использование математических моделей, в основу которых положен зональный метод расчета теплообмена излучением, применительно к камере сгорания судового дизеля, требует предварительного определения ряда энергетических характеристик. Важнейшей из них является спектральная оптическая толщина племени. Целью данной статьи является разработка расчетного метода для оценки спектральной оптической толщины пламени в камере сгорания судового дизеля 6 ЧН 24/36. Показано, что величина спектральной оптической толщины пламени зависит от трех основных параметров: коэффициента ослабления излучения, концентрации частиц сажи и их оптических характеристик (среднего диаметра и параметра дифракции). Представлены распределение частиц сажи по размерам и значения спектральной оптической толщины пламени в функции угла поворота коленчатого вала для судового дизеля 6 ЧН 24/36 при испытании его по нагрузочной характеристике. Приведены основные подходы, позволяющие определить интегральную степень черноты пламени в камере сгорания с использованием полученных расчетных данных по его спектральной оптической толщине.

Application of mathematical models in the base of them a zonal method of calculation of radiative transfer is included in additional to marine diesel combustion chamber, it is required first determination the number of power data. Spectral optical thickness of flame is very important. Development of method calculation for the estimation of spectral optical thickness of flame in marine diesel 6 ChN 24/36 combustion chamber is the purpose of this paper. A value of spectral optical thickness of flame depends from three basic data: coefficient of attenuation radiation, concentration of soot particles and its optical data (mean diameter and parameter of diffraction) is given. Distribution of soot particles according to sizes and values of spectral optical thickness of flame in function of crank angle degree for marine diesel 6 ChN 24/36 in its power data is shown. Basic methods per missing to determine integral degree of flame blackness in combustion chamber with application of calculation data on its spectral optical thickness is determined.
Способы компенсации высших гармоник напряжения в судовых электроэнергетических системах
Authors: Kornev A.S. , Kuznetsov V.I. , Pan H. , Senkov A.P.
Published: March 2020

В статье выполнен анализ способов компенсации высших гармоник в судовой сети единой электроэнергетической системы (ЕЭЭС), в составе которой, основным потребителей электроэнергии является система электродвижения (СЭД). Рассмотрены три схемы компенсации высших гармоник, создаваемых неуправляемыми выпрямителями, входящими в состав преобразователей частоты (ПЧ). Проведено компьютерное моделирование фрагмента структуры ЕЭЭС, запатентованной фирмой Siemens , схемы 18-пульсного выпрямителя, а также схемы с двумя 12-пульсными выпрямителями. Результаты моделирования показали, что в структуре ЕЭЭС фирмы Siemens , пропульсивный трансформатор обеспечивает компенсацию только части высших гармоник, из-за чего, искажения формы напряжения в судовой сети могут быть значительными. Схема, содержащая два 12-пульсных выпрямителя, а также трехфазный трансформатор с четырьмя трехфазными обмотками, имеющими сдвиг фаз на 15 электрических градусов, показала наилучшие показатели по качеству тока, обеспечивая эффективную компенсацию 5, 7, 11, 13 гармонических составляющих тока. Предложенная схема с двумя 12-пульсными выпрямителями позволяет в составе ПЧ применить трехуровневые автономные инверторы напряжения, характеризующиеся высоким качеством тока в обмотках гребного электродвигателя.

The article analyzes the methods for compensating for higher harmonics in the ship network of the unified electric power system (UEPS), in which the main electric power consumers are electric propulsion systems (EPS). Three compensation schemes for higher harmonics created by uncontrolled rectifiers that are part of frequency converters are considered. Computer simulation of a fragment of the UEPS structure patented by Siemens, an 18-pulse rectifier circuit, and also circuits with two 12-pulse rectifiers were carried out. The simulation results showed that in the Siemens UEPS structure, a propulsive transformer provides compensation for only a part of the higher harmonics, due to which, voltage waveform distortions in the ship network can be significant. The circuit, containing two 12-pulse rectifiers, as well as a three-phase transformer with four three-phase windings having a phase shift of 15 electrical degrees, showed the best current quality indicators, providing effective compensation for 5, 7, 11, 13 harmonic components of the current. The proposed circuit with two 12-pulse rectifiers allows the use of three-level autonomous voltage inverters, which are characterized by high quality current in the windings of the propeller motor, as part of the frequency converter.
Концепция цифровой платформы региональной системы персонального питания
Authors: Maitakov F.G. , Yafasov A.Ya.
Published: March 2020

Разработана концепция цифровой платформы региональной системы персонального питания на основе морского и местного сельскохозяйственного сырья, включающая математическую модель, архитектуру и методические подходы. Рассмотрена технология обработки массивов данных об индивидуальном и групповом пищевом статусе, клиентской базе, новых и классических продуктах, системах доставки продукции потребителю. Создание сетевой платформенной экосистемы персонального питания позволяет многократно снизить транзакционные издержки и обеспечить ценовую политику персонализированных продуктов питания в пределах цен массовой продукции. Реализация концепции построена на последовательном переходе от прототипа платформы для обработки информации по мере развития методологии и разработки подсистем к инфраструктурной платформе в виде IT-сервиса, а затем к конкретной конфигурации рабочей платформы, обеспечивающей online-взаимодействие всех участников, включая клиентов, между собой, с программными сервисами, техническими устройствами и консультантами платформы. Научная новизна работы заключается в новой технологии сбора, хранения и обработки Big Data, алгоритмике и технологии взаимодействия пользователей, технических устройств и программных сервисов, снимающих противоречия между описанием объекта-организации в рамках различных подходов и отсутствием объединяющего способа описания через понятия сущность , свойство , отношение .

The concept of a digital platform for a regional personal nutrition system based on marine and local agricultural raw materials was developed, including a mathematical model, architecture and methodological approaches. The technology of processing data arrays on individual and group nutritional status, customer base, new and classic products, and product delivery systems to the consumer is considered. The creation of a network platform ecosystem of personalized food allows many times to reduce transaction costs and ensure the pricing policy of personalized food within the limits of mass production prices. The implementation of the concept is based on a sequential transition from a prototype platform for information processing as the methodology and subsystems develop to an infrastructure platform in the form of an IT service, and then to a specific configuration of a working platform that provides online interaction between all participants, including customers, among themselves, with software services, technical devices and platform consultants. The scientific novelty of the work lies in a new technology for collecting, storing and processing Big Data, algorithms and technology for user interaction, technical devices and software services that remove the contradictions between the description of an object - an organization within the framework of various approaches and the lack of a unifying way of describing through the concepts of entity, property, relation.
Функционирование бортовой интеллектуальной системы на основе комплекса управляемого дистанционного эксперимента
Authors: Nechaev Yu.I. , Petrov O.N.
Published: March 2020

Рассматривается повышение эффективности функционирования бортовой интеллектуальной системы (ИС) при использовании комплекса управляемого дистанционного эксперимента (УДЭ). Такая технология интеллектуальной поддержки обеспечивают анализ и прогноз развития экстремальных ситуаций на основе данных физического моделирования и динамической модели современной теории катастроф (СТК), интегрирующей интеллектуальных технологии и высокопроизводительные вычисления. Особенности построения комплекса УДЭ связаны с развитием новых подходов к интеграции знаний сложных систем в эволюционирующей нестационарной среде. Программный комплекс УДЭ представляет собой активную динамическую систему (АДС), обеспечивающую оперативный контроль динамики судна на основе взаимодействия динамической базы знаний бортовой ИС и комплекса УДЭ в режиме экстренных вычислений (Urgent Computing UC) 1 8. Динамика взаимодействия имитируется с помощью системы управления, реализующей физические эффекты в процессе развития аварийной ситуации. Приведены примеры реализации разработанной стратегии при контроле экстремальных ситуаций в бортовых ИС новых поколений.

An increase in the functioning efficiency of an onboard intellectual system (IS) when using a complex of controlled remote experiment (CRE) is considered. Such intellectual support technology provides analysis and forecast of the development of extreme situations on the basis of physical modeling data and a dynamic model of modern catastrophe theory (MCT), integrating intellectual technologies and high-performance computing. The features of constructing the CRE complex are associated with the development of new approaches to the integration of knowledge of complex systems in an evolving non-stationary environment. The CRE software package is an active dynamic system (ADS) that provides operational control of the vessels dynamics based on the interaction of the onboard intellectual system dynamic knowledge base and the CRE complex in urgent computing mode (Urgent Computing - UC) 1 - 8. The dynamics of interaction is simulated using a control system that implements physical effects in the process of emergency situation evolution. Examples of the implementation of the developed strategy for the control of extreme situations in the onboard intellectual systems of new generations are given.
Амфибийные вездеходы на воздухоопорных гусеницах для освоения арктических шельфовых побережий
Authors: Azovtsev A.I. , Ogai S.A. , Voyloshnikov M.V. , Petrov V.A. , Moskalenko O.V.
Published: March 2020

Амфибийные вездеходы на воздухоопорных гусеницах оказывают минимальное воздействие на поверхность грунта в арктической тундре, что является большим преимуществом этого типа транспортных средств, относя к их числу вездеходы грузоподъемностью до 150 т. Воздухоопорная гусеница конструктивно является промышленной конвейерной лентой, снабженной с наружной стороны надутыми пневматическими плицами большого диаметра. Воздушная подушка используется взамен металлической подвески. Большая площадь контакта пневматических плиц с поверхностью обеспечивает проходимость вездехода по слабому грунту, снегу или болоту в летнее время без повреждения тундрового дерна. Вездеходы на воздухоопорных гусеницах могут преодолевать уклон в 20 градусов, а также преодолевать береговой уклон. При форсировании пологих склонов вездеходы на воздухоопорных гусеницах в полтора два раза более эффективны, чем традиционные амфибии на воздушной подушке. Применение универсальных амфибийных транспортных средств на воздухоопорных гусеницах (ТСВГ) необходимо для освоения береговых территорий арктического шельфа.

Amphibious all-terrain vehicle with the air-cushion caterpillars have minimal impact on the surface of ground in the arctic tundra, and this is a great advantage of this type of vehicles, referring to them the 150 t load capacity as well. The air-cushion caterpillar is manufactured conveyer track with the inflated pneumatic supports of large diameter on the outer side of the track. The aircushion is applied instead of the mechanical suspension rolls. The large area of pneumatic supports contact provides the passability of the vehicle in the weak ground, or snow or the marshland without the damaging of tundra turf in summer. The vehicles with the air-cushion caterpillars can go on the 20 degree slope as well as on the coast slope. For the overcoming of small slopes the vehicles with the air-cushion caterpillars are of 1.5 to 2 times more effective than that of the usual aircushion boats. The use of universal amphibious all-terrain vehicles with the air-cushion caterpillars (VACC) is of the demand for Arctic offshore coastal territories development.
Сравнение требований российского морского регистра судоходства и финско-шведских правил к ледовым классам
Authors: Surov O.E. , Kitaev M.V. , Kalenchuk S.V. , Mamontov A.I.
Published: March 2020

Освоение ресурсов Арктики приводит к конкуренции в области проектирования и постройки судов ледовых классов, а также к необходимости совершенствования и корректировки требований ведущих классификационных обществ. До недавнего времени ведущие классификационные общества имели собственные требования к ледовым классам. В настоящее время ведущие иностранные классификационные общества включили в свои правила Балтийские ледовые классы, соответствующие требованиям Финско-Шведских Правил для судов ледового класса и Полярные ледовые классы, соответствующие Унифицированным требованиям международной ассоциации классификационных обществ. Собственную ледовую классификацию судов, ориентированную на ледовые условия канадской Арктики сохранило только Американское бюро судоходства. Исходя из сложившихся тенденций, имеет смысл сравнивать требования правил Российского морского регистра судоходства к ледовым классам, не с требованиями правил конкретных иностранных классификационных обществ, а непосредственно с требованиями Финско-Шведских Правил и Унифицированными требованиями международной ассоциации классификационных обществ. Принимая во внимание тот факт, что подавляющее большинство вводящихся в строй судов с ледовым классом имеют балтийские классы, то на данном этапе исследования целесообразно выполнить сопоставление требований к ледовым классам Правил Российского морского регистра судоходства и Финско-Шведских Правил.

The development of Arctic resources leads to competition in shipbuilding industry and ice class vessels design, as well as to development and updating the requirements of classification societies. Until recently the classification societies had their own requirements for ice classes. Nowadays the leading foreign classification societies have included in their rules the Baltic ice classes that correspond to the requirements of the Finnish-Swedish Rules for ice class ships and the Polar ice classes that correspond to the unified requirements of the International Association of Classification Societies. Nonetheless the American Bureau of Shipping retained its own ice classification of ships, oriented to the ice conditions of the Canadian Arctic. Based on the global trends it is obvious to compare the Russian register of shipping rules with the requirements of the Finnish-Swedish Ice class rules and Unified Requirements for polar ships. The most of modern ice class vessels have the Baltic Finnish-Swedish Ice classes than reasonable to compare the requirements of Russian register of shipping rules with the requirements of the Finnish-Swedish Ice class rules.
Обеспечение электромагнитной совместимости систем интеллектуального управления при появлении помех в судовых кабельных трассах
Authors: Agafonov A.M. , Worshevsky A.A. , Vorshevskii P.A. , Grishakov E.S. , Kornev A.S.
Published: March 2020

Системы интеллектуального управления базируются на использовании цифровой техники и по своему принципу действия восприимчивы к внешним помехам. Изменения напряжения и тока в кабелях, электромагнитные поля могут привести к появлению в цепях передачи информации и питания систем напряжений, похожих на полезные сигналы, что приведет к сбоям в работе систем. Технология электромагнитной совместимости (ЭМС) призвана устранить взаимные влияния оборудования и обеспечить его нормальную работу в условиях действия помех. Кабельные трассы являются особенно значимым фактором для обеспечения ЭМС на судах. Помехи распространяются в кабелям от источников к чувствительному электронному оборудованию (ЭО). Метод распространяющихся волн дает возможность рассчитать изменения помех при распространении по кабелям. Силовые и информационные кабели могут прокладываться в одной трассе, что приводит к их электромагнитной связи. Рассмотренные модели оценивают наведенные напряжения в информационных кабелях при появлении помех в силовых кабелях. Параметры электромагнитной связи кабелей могут быть определены расчетным путем и экспериментально на основе предлагаемой методики. Приведенные рекомендации по снижение уровня излучаемых помех от кабельных трасс, снижению наведенных напряжений и выполнению экранирования призваны помочь разработчикам ЭО и систем в обеспечении ЭМС.

Intellectual control systems are based on digital technique. Digital electronic equipment (EE) is the receptor of electromagnetic interference due to its function principle. EE malfunction can be caused by induced voltages in input/output and power supply circuits. Voltage and current changes in cables leads to electromagnetic noise and induced voltages. Protection technique for power, input/output, case and grounding ports can be used in equipment and ship systems design. Electromagnetic compatibility technique must eliminate mutual influence of EE and give normal function of EE in real electromagnetic environment. Cable run is important factor for EMC obtaining in ships. Noise voltage propagates in cable from noise source to sensitive EE. Voltage parameters can be calculated with travelling wave technique. There are power and information cables in shipboard cable run. Electromagnetic coupling of cables leads to voltages in one cable induced by voltages and current in other cable. Coupling models give possibility to calculate induced voltages. Parameters of coupling can be determined with calculation on the base of detailed information about cable run or with proposed experiment procedure. Proposed recommendations about cable emission decreasing, cables decoupling and shielding can be useful for EMC obtaining.
Стенд для измерения крутящего момента маломощных энергоагрегатов
Authors: Samsonov A.I. , Sobolenko A.N.
Published: March 2020

Предлагается тормоз с постоянными магнитами, при помощи которых можно исследовать маломощные высокоскоростные энергоагрегаты мощностью до 1 кВт. Принцип действия стенда основан на использовании силы торможения, вызванной вихревыми токами Фуко. Количество энергии, создаваемой токами Фуко и вызывающими силу торможения, прямо пропорционально квадрату частоты изменения магнитного поля. Нашем случае это частота вращения диска тормоза. Приведена принципиальная схема устройства стенда с магнитным тормозом у которых ось вращения не совпадала с осью вращения вала турбомашины. Проанализирован принцип его действия. Объяснен его недостаток. Предложена новая схема стенда, у которого ось вращения совпадает с осью вращения вала турбомашины. Показано, что в этом случае возможно точное количественное определение величины крутящего момента испытываемого энергоагрегата. Предложенный стенд для измерения крутящего момента рекомендуется использовать для крутящего момента при испытаниях микротурбин, маломощных двигателей беспилотных летательных аппаратов, триммеров и газонокосилок, электромоторов небольшой мощности.

A brake with permanent magnets is proposed, with the help of which it is possible to study small-scale high-speed power units with a capacity of up to 1 kW. The principle of operation of the stand is based on the use of braking force caused by eddy currents Fouco. The amount of energy generated by Fouco currents and causing the braking force is directly proportional to the square of the frequency of the magnetic field. In our case, it is the speed of the brake disk. The schematic diagram of the device stand with a magnetic brake in which the axis of rotation does not coincide with the axis of rotation of the shaft of the turbomachine. The principle of its operation is analyzed. Explained by the lack of it. A new scheme of the stand, in which the axis of rotation coincides with the axis of rotation of the turbomachine shaft, is proposed. It is shown that in this case it is possible to accurately quantify the torque of the test power unit. The proposed stand for torque measurement is recommended for torque testing of microturbines, low-power engines of unmanned aerial vehicles, trimmers and lawn mowers, low-power electric motors.
Vācbaltiešu un latviešu attiecību attēlojums Rūdolfa Blaumaņa daiļradē
Authors: Daija Pauls
Published: March 2020

The article explores the relationship between Baltic Germans and Latvians in the works of Rūdolfs Blaumanis by turning attention towards the interpretation of this topic within the context of the social history of literature. An insight into previous evaluations by literary historians has been provided. In the first part of the article, two works with central Baltic German characters – novella “Andriksons” (1899) and play “Ugunī” (In the Fire, 1906, written in 1904) – have been analyzed. In these works, German landowners have been depicted demonstrating the social and national conflicts of the age in their relationship with subordinated Latvians. The characters of landowners are ambiguous and indecisive, and they are distanced from everyday reality and living in the past. Their communication with Latvians is characterized by complications and obstacles. Hence, these characters can be viewed as a wider generalization about the crisis of the Baltic German community by the turn of the 20th century. In the second part of the article, episodic characters of Baltic Germans in prose fiction have been explored along with the overview of satirical poetry by Blaumanis in which the relationship between Baltic Germans and Latvians mostly in the period after the revolution of 1905 has been addressed. It has been concluded in the article that in the representations of the relationship between Baltic Germans and Latvians, Blaumanis depicts the instability of the transition period and avoids disclosing his own views. This corresponds to his concept of the depiction of social problems in literary works. Satirical poetry, which is less neutral but also less literary successful, remains an exception. Baltic German characters in works of Blaumanis are mostly episodic, and besides neutral background characters and politically charged characters in satirical poetry, the most interesting both literary and historically are the characters in which the contradictions of the period have been represented.