bluuebunny/crossref_metadata_2025 huggingface dataset:
Alles im Blick
Authors: Metz Yannic
Published: April 2021

Der deutsche Markt für Heizenergie in Gebäuden ist einer der größten CO2-Verursacher und Kostentreiber, vor allem in Nichtwohngebäuden – denn nach wie vor sind 60 % der Gebäude auf einem energietechnischen Stand von 1980. Aber gerade am Arbeitsplatz beschäftigen sich nur die wenigsten mit dem Thema Heizen. Helfen würde es, das Raumklima in die Hände des Facility-Managements zu legen und die Steuerung zu automatisieren. Hier liegt viel Potenzial für Energieeinsparungen.
Zeitgewinn bei Routineaufgaben
Authors: Ebert Gunther
Published: April 2021

Die Energiewende lässt sich nur mit ausreichend qualifizierten Fachkräften bewältigen. Im „War for Talents“ ist der Human-Resources (HR)-Bereich gefordert, geeignetes Personal zu gewinnen und langfristig zu binden. Doch vielerorts fehlt es an Zeit für diese wichtige Aufgabe. Das Verbesserungspotenzial bei administrativen Tätigkeiten in der HR-Abteilung übersehen viele. Es ist höchste Zeit, das zu ändern.
„Das Produkt Strom aus der Anonymität holen“
Authors: Rieckhoff Andreas
Published: April 2021

Über die enyway GmbH war seit ihrer Gründung im September 2017 in den Medien viel zu lesen. Interesse erzeugt, wie das Hamburger Start-up mit neuen Ideen versucht, die Energiewende zu beschleunigen. Startprojekt war eine Plattform, auf der Endkunden Strom aus Wind-, Sonnen- und Wasserkraft direkt vom Erzeuger kaufen können 1). 2019 sorgte das Produkt „Change“ dafür, dass auch Mieter in die Stromerzeugerrolle schlüpfen können. Bei einem Solarkraftwerk in Sachen-Anhalt konnte jeder Anteile in der Größe eines Pizza-Kartons, einer Tischtennisplatte oder eines Trampolins erwerben und den erzeugten Strom selbst nutzen. BWK sprach mit Andreas Rieckhoff, einem von drei Geschäftsführern bei enyway, über die bislang gemachten Erfahrungen.
Pumpturbine für alle Lastbereiche ohne Drehrichtungsumkehr
Authors: Westphal Leonhard , Popp Matthias
Published: April 2021

Gerade bei Pumpspeicherkraftwerken bietet sich die Möglichkeit, die Wechselhaftigkeit des zunehmenden, unstetigen regenerativen Energieangebots besser auszugleichen. Genau für diesen Einsatzbereich haben Wissenschaftler der Technischen Hochschule Nürnberg eine innovative Strömungsmaschine entwickelt.
Evaluación de la actividad de carnívoros en un entierro secundario individual en la Bahía San Antonio, Provincia de Rio Negro
Authors: Guichón Fernández Rocío , Borella Florencia , García Guraieb Solana
Published: April 2021

La acción de los carnívoros sobre restos humanos presenta escasos antecedentes en las investigaciones bioarqueológicas patagónicas.  La incidencia de este agente ha sido abordada principalmente en estudios forenses que han generado una robusta metodología aplicable a casos arqueológicos. Se presenta aquí el análisis de un individuo adulto incompleto con modificaciones generada por carnívoros, hallado en el sitio Centro Minero-Criadero de Ostras (costa norte del Golfo San Matías, Río Negro), con cronología del Holoceno tardío final. Se trata de un individuo representado  por 25 elementos, en buen estado de preservación y algunos con notables evidencias del accionar carnívoro. Dadas las características de su disposición, un estudio previo presentó una interpretación preliminar de su formación que sugería que la acción de este agente había actuado sobre el paquete funerario con remanentes de tejido blando. Combinando los modelos forenses y los estudios tafonómicos del tipo y localización del daño provocado por carnívoros, se plantea aquí una interpretación  alternativa que sugiere que el paquete secundario se habría conformado con los remanentes óseos modificados previamente por cánidos. Estos resultados favorecen al conocimiento de la diversidad de prácticas mortuorias en la costa del Golfo San Matías y del accionar  de carnívoros en el registro bioarqueológico en ambientes de dunas litorales.
Ketahanan sistem struktur bangunan terhadap angin studi kasus : Mbaru Niang di Desa Wae Rebo, Kabupaten Manggarai, NTT
Authors: Pradipto Eugenius , Tristanto Kartika
Published: April 2021

Wae Rebo merupakan salah satu desa di Kabupaten Manggarai yang berada di ketinggian 1200 mdpl. Desa ini memiliki bangunan tradisional berbentuk kerucut dengan ketinggian lima belas meter yang dinamakan mbaru niang. Letaknya yang berada di ketinggian akan berpengaruh pada bangunan terhadap angin dimana semakin tinggi suatu tempat maka semakin besar kecepatan anginnya. Namun hingga saat ini mbaru niang masih berdiri dengan fungsi yang sama sebagai tempat tinggal sejak puluhan tahun. Keterbatasan teknologi saat itu membuat masyarakat Wae Rebo menggunakkan teknologi yang sederhana dalam membangun mbaru niang. Hal ini menjadikan bahasan yang menarik untuk diteliti, dimana tujuan penelitian ini adalah untuk mengetahui bagaimana ketahanan sistem struktur rumah tradisional mbaru niang yang dibangun oleh masyarakat Wae Rebo terhadap angin. Dan kondisi tersebut menjadikan masalah terhadap konstruksi bangunan yang berada di ketinggian. Metode yang digunakan pada penelitian ini bersifat kualitatif rasionalistik dengan memperoleh data studi literatur dari berbagai jurnal, selain itu juga peneliti melakukan wawancara guna mencocokan data. Hasil dari penelitian ini ditemukan penggunaan sistem struktur bangunan di mbaru niang terhadap angin dapat dikatakan tepat guna, dimana bangunan ini juga memiliki struktur yang terpisah didalamnya. Serta adanya sistem struktur sendi dan jepit sehingga dapat meminimalkan goyangan dari terpaan angin, sistem tersebut diperkuat lagi dengan dengan teknik kunci dari sistem ikat yang membuat setiap sambungan lebih fleksibel.
Perlindungan Hak Asasi Manusia oleh Pemerintah pada Masa Pandemi COVID-19
Authors: Irawan Anang Dony , Samudra Kaharudin Putra , Pratama Aldiansah
Published: April 2021

Perlindungan Hak Azazi Manusia (HAM) adalah tindakan atau upaya untuk melindungi masyarakat dari perbuatan sewenang-wenang oleh penguasa yang tidak sesuai dengan aturan hukum, untuk mewujudkan ketertiban dan ketentraman sehingga memungkinkan manusia untuk menikmati martabatnya sebagai manusia. Hubungan hukum selalu menimbulkan hak dan kewajiban yang timbal balik, hak dari pihak yang satu menjadi kewajiban pihak yang lain dan sebaliknya. Sebagai subyek hukum yang telah menjalankan tugas pelayanannya dalam koridor hukum yang benar, pada hakikatnya masyarakat berhak mendapatkan perlindungan hukum dari kaidah?kaidah hukum positif yang berlaku. Pasal 28D ayat (1) UUD 1945 menyebutkan bahwa setiap orang berhak atas pengakuan, jaminan, perlindungan, dan kepastian hukum yang adil serta perlakuan yang sama dihadapan hukum. Pasal 27 ayat (1) UU No. 36/2009 tentang Kesehatan menyebutkan bahwa tenaga kesehatan berhak mendapatkan imbalan dan pelindungan hukum dalam melaksanakan tugas sesuai dengan profesinya. Ketidakjelasan prediksi dari para ahli mengenai berakhirnya pandemi Covid-19 menyebabkan pasar ekonomi mengalami banyak spekulasi dan ketidakstabilan. Covid-19 menyebabkan terhentinya transaksi jual beli yang secara konvensional merupakan salah satu hal yang paling esensial dari aktivitas ekonomi sebagai akibat adanya kebijakan PSBB maupun karantina. Selama pandemi Covid-19 masih menyebar maka dapat dipastikan mayoritas transaksi ekonomi akan terhenti atau setidak-tidaknya mengalami gangguan.
Pendekatan Kewarganegaraan Indonesia
Authors: Manik Toba Sastrawan , Samsuri Samsuri
Published: April 2021

Dalam diskursus kontemporer, aliran pendekatan kewarganegaraan terdiri atas Liberal, Republikan, dan Komunitarian. Tujuan dari kajian ini ialah untuk mengkaji dan menjelaskan pendekatan kewarganegaraan yang digunakan di Indonesia. Metode penelitian yang digunakan adalah penelitian kualitatif menggunakan teknik pengumpulan data studi pustaka (library research). Sumber-sumber dalam penelitian ini ialah seperti buku, artikel hasil penelitian, dan dokumen-dokumen seperti UUD, Peraturan Pemerintah, dan Panduan-Panduan yang berkaitan dengan Pendidikan Pancasila dan Kewarganegaraan. Data diolah dan dianalisis secara indukatif. Hasil dari temuan kajian ini ialah Pendekatan Kewarganegaraan Indonesia berbeda dengan pendekatan kewarganegaraan kontemporer. Pendekatan Kewarganegaraan Indonesia ialah pendekatan Pancasila yang merupakan sintesa dari ketiga aliran kontemporer. Ruang-ruang individu dan publik dilindungi dan dikembangkan oleh negara. Lebih dari itu, budaya masyarakat atau kearifan yang turut membentuk kehidupan masyarakat dilindungi dan dikembangkan oleh negara sebagaimana termaktub dalam UUDNRI Tahun 1945
First description of the male of Tsherepanovia globosa Korotyaev, 1992 (Coleoptera, Curculionidae) with new taxonomic data
Authors: Legalov Andrei A.
Published: April 2021

A male of Tsherepanovia globosa Korotyaev, 1992 is described and illustrated. Tsherepanovia Korotyaev, 1992, placem. nov. is transferred from the subfamily Erirhininae to the subfamily Curculioninae. Key for the genera of the tribe Ellescini is given.
Принципы обратной моноимпульсной радилокации в задачах построения помехоустойчивых и живучих систем самонаведения
Authors: Григорян Д. С. , Лайко Е. А. , Бушуев А. Ф. , Торбин С.  А.
Published: April 2021

Рассмотрены принципы построения обратных моноимпульсных систем, обеспечивающих повышенную помехоустойчивость за счёт излучения суммарным и разностными каналами, а приёма одним суммарным каналом. Показано, что обратная схема построения моноимпульсного пеленгатора даёт возможность формировать приёмный суммарный канал в виде весовой суммы нескольких отдельных каналов, что обеспечивает подавление помех в главном максимуме диаграммы направленности его антенны. С другой стороны, приём одним каналом даёт возможность выделения пеленга цели относительно излучающего элемента пассивными радиолокационными средствами, не совмещенными с передатчиком.
Применение пространственно-разнесённых радиолокационных станций для решения задачи селекции
Authors: Сергунов К.  Ю.
Published: April 2021

Рассматриваются решения вопросов селекции с использованием информации от многопозиционных радиолокационных систем в автономном режиме для обеспечения рубежа принятия классификационного решения на участке с сильно разрежённой атмосферой. Описываются основные и дополнительные признаки селекции, математический аппарат принятия решения и модель системы объединения данных. Проводится анализ целесообразности использования информации от многопозиционных радиолокационных систем в автономном режиме.
Quasi-resonant inverter power pulsed radar system
Authors: Dolov V. N. , Strelkov V. F. , Vanyaev V. V. , Kochnev A. A.
Published: April 2021

Presented by quasi-resonant converter of a pulse of microwave power transmission device lamp radar with pulse output voltage regulation. The features of his work are given a mathematical model, the external characteristics and some simulation results in open-loop and closed-loop output voltage system.
Analysis of the impact of structural and gas-dynamic parameters of missiles on shock-wave processes in silos
Authors: Peshkov R. A. , Sidelnikov R. V.
Published: April 2021

The analysis capabilities of software ANSYS FLUENT and verification algorithm research, used to solve the problems of disclosure under rocket container space under the influence of the value of the loading of the launch canister and missiles of various factors: the speed of the rocket from the container, the different approaches to solving problems with moving boundaries, the length of the container.
Prospects for reconstruction as a basic antenna measurements method of acceptance tests
Authors: Isakov M. A. , Lysynsky V. P.
Published: April 2021

Considered an automated measuring and computing complex for antenna measurements MMAP 0.15 - 12.0 083 B3 generated by the Branch No 1 "Almaz - Antey" Corp. Given its technical and metrological characteristics, analyzed the advantages and disadvantages. Discussed the prospects for near-field measurements as the primary method for carrying out acceptance testing of antenna systems, radio-electronic means of aerospace defense.
Remote measurement of electric charges of air objects
Authors: Lastavetski A. E. , Klepka S. P. , Riabokon M. S.
Published: April 2021

The method of remote measurement of the electric field of the air facility and calculation of the electric field sensor signals of various designs in view of conductive paths. The above algorithm for estimating the parameters of the trajectory of the air facility and calculating its electrical charge in a three-position system, passive electrostatic locations.
Doppler phase compensator clutter feedforward
Authors: Popov D. I.
Published: April 2021

The method of maximum likelihood estimation algorithms synthesized phase Doppler clutter. The principles of construction and structural scheme of automatic compensator phase Doppler clutter feed-forward. A comparative analysis of the accuracy of the compensation offered automatic compensator.
Power antenna radar with variable speed
Authors: Strelkov V. F. , Andryushin M. V. , Vanyev V. V.
Published: April 2021

A mathematical model of the "mains - regulated electric drive" radar antenna us with a synchronous motor with permanent magnets. Peculiarities of work at a controlled electric variable speed electric motor shaft. A method and control system with motorized adjustable mechanical and electronic scanning of the antenna, improving performance characteristics of radar stations.
Ratio improved adaptive systems moving target autoregressive type
Authors: Bartenev V. G. , Bartenev M. V. , Bityukov V. K.
Published: April 2021

The comparative analysis of the effectiveness of methods for implementing adaptive systems moving target based on autoregression approach. AR model correlated noise can effectively deal with clutter, without resorting to the algorithm based on the correlation matrix inversion. Considered several methods of weight factor of adaptive systems moving target, which is used as the coefficients of the autoregression. One of the main parameters that determine the effectiveness of the systems being compared, is the improvement factor, which was used in this study.
Technique for designing antenna systems with complex-shaped reflectors
Authors: Vorobyev M. S. , Kudrin L. P. , Salikhov R. R. , Khashimov A. B.
Published: April 2021

The study presents a method of defining a mathematical model for dipole antennas with reflector. We employ functional matrix operators to provide a compact formulation of the radiation field computation problem for such antenna systems. We use an asymptotic correspondence between three-dimensional and two-dimensional problem solutions to design an antenna system for distance measuring equipment. Consequently, we propose a numerical technique for investigating the mathematical model; we use a non-linear objective function for optimising the excitation function of the antenna system.
Beamforming arrangement for a monopulse frequency scanning antenna array
Authors: Suchkov A. V.
Published: April 2021

In the research we develop a waveguide beamforming arrangement for a monopulse frequency scanning antenna array. We study specifics of the sigma delta arrangement suggested and show the ways of eliminating its characteristic limitations. We consider some issues of structural and technological implementations. As a result, we propose the techniques for numerical analysis and parameter optimisation of the electrodynamic arrangement model.
On cancellation of correlated interference
Authors: Litvin M. V.
Published: April 2021

The article considers a problem of receiving the pulse signal mixed additively with correlated interference. It shows that a whitening transformation may be implemented via a non-linear device performing interference selection and subsequent cancellation. Reception quality is evaluated.
Optimization parameters of broadband tripler diodes of 75...110 GHz frequency
Authors: Berezin V. V. , Schitov A. M.
Published: April 2021

We optimized the parameters of the broadband tripler diodes of 75...110 GHz frequency according to the proposed method of calculation and design in order to increase the conversion efficiency
Constraining a shaped charge jet cavity in a barrier with boundary shields
Authors: Golovatenko V. D. , Golovatenko A. V.
Published: April 2021

We suggest and validate empirically an acoustic method for decelerating and halting the movement of a shaped charge jet in a barrier by means of implementing an acoustic slit in the body of the barrier, the slit being located on the opposite side of the barrier relatively to the mounted linear charge with a profiled liner. We determine the pressure range created by a linear shaped charge with a profiled liner, and provide an estimation of the hydrodynamic wave length for the penetration process.
Self-development problems of a work team leader
Authors: Bolshakov D. Yu. , Eroshin S. E. , Novikov Ya. V.
Published: April 2021

We analyse the positive and negative features of emotional intelligence characterising leaders of industrial and scientific teams who hold executive positions. We suggest a method for developing positive features and correcting negative ones so as to increase the intellectual capacity of a team leader.
Onboard scanning system for photodetector with time delay and charge accumulation
Authors: Vecherkovskiy A. F. , Egorov P. E. , Miloradov A. B. , Filatov A. B.
Published: April 2021

The study describes scanning space-based assets which, by means of a flat scanning mirror and an optical system, provides the transformation of the object space into a temporal sequence of electronic signals of a photodetector with a time delay and charge accumulation. High accuracy of photodetector elements polling and scanning of the object space is due to the movement of the scanning mirror according to the indications of a non-contact interferometric angle sensor. The reciprocating rotary scanning by a flat mirror is kinetically compensated by the opposite motion of the flywheel, which minimizes residual perturbations on the space platform. To reduce the impulse energy consumption and the time of reversal between the scanning mirror and the compensating flywheel, magnetic reversal energy recuperators are used.
Prospects for using high-temperature ceramic and glass-ceramic materials and antioxidant coatings in aeronautical engineering
Authors: Graschenkov D. V. , Vaganova M. L. , Lebedeva Yu. E. , Sorokin O. Yu. , Chaynikova A. S.
Published: April 2021

The study focuses on the prospects and advantages of high-temperature ceramic, glass-ceramic materials and oxidation-resistant coatings use for fabrication of high-speed aircraft structures. The paper describes achievements of Federal State Unitary Enterprise “All-Russian Research Institute of Aircraft Materials” in the field of ceramic materials development via hybrid method of spark plasma sintering, sol-gel method and thermochemical synthesis. Moreover, the article shows the research results concerning the development of oxidation-resistant coatings for C/SiC and C/C materials.
Electromagnetic modelling of a dual-mode multi-frequency feed horn of a reflector antenna with compensation for radiation pattern side lobes
Authors: Rostokin I. N. , Fedoseeva E. V. , Rostokina E. A.
Published: April 2021

The article deals with constructing an antenna system for a passive multi-frequency radiometry system featuring compensation for radiation pattern side lobes. We supply results of experimentally investigating directional properties of a dual-mode multi-frequency feed horn. We also provide results of electromagnetic modelling of signal transmission characteristics in the multi-frequency feed horn that we present
Iterative inversion algorithm for an interference correlation matrix
Authors: Yastrebov A. V.
Published: April 2021

The article considers efficiency of a multi-channel interference canceller as a function of the number of compensation channels used for a fixed number of jammers. The author suggests an iterative inversion algorithm for an interference correlation matrix, making it possible to achieve zero loss at a certain stage and decrease the computational complexity of determining weight factors for compensation channels
Prospects of combined antenna systems in onboard electronic protection systems of aircraft
Authors: Zhukov A. N. , Zhukov R. V. , Rozhkov S. S.
Published: April 2021

The study compares two designs of antenna units in terms of reducing the coupling ratio between the transmitting and receiving antennas. The first design is the original transceiver antenna unit of an electronic countermeasure aircraft, which contains two transmitter antennas close to each other in a shared compartment and a receiver antenna in a separate compartment behind a solid screen with bevelled edges. The second design is an upgraded antenna unit of a compact electronic countermeasure station, in which each antenna is located in its own compartment formed by a cross-shaped divider; additional measures have also been taken to improve the modulus of the coupling ratio between antennas. Both antenna unit designs use the same broadband Vivaldi antennas.
On computing dynamic loads on flight control surfaces subjected to impact
Authors: Samokhina E. A. , Samokhin P. A.
Published: April 2021

Predicting structure properties at the initial design stage is especially important for products that will undergo vibration and impact when used. The paper presents a technique for computing dynamic loads on an aircraft rudder arm when it strikes an arrester as it unfolds in flight. We used a finite element software package to analyse the natural vibrations of the structure.
Computing filtering capacitance for a transimpedance amplifier
Authors: Trifonov A. V.
Published: April 2021

The study describes a new approach to determining the capacitance of a filtering capacitor in a transimpedance amplifier. We present a model equation for computing this filtering capacitance.
Study of erosion resistance of graphite MPG-7
Authors: Belozerov L. S. , Kazin A. A.
Published: April 2021

The study focuses on the erosion resistance of graphite samples with an electrospark coating. To compare the experimental results, we chose titanium, tantalum, tungsten, stellite as a hardening coating. For erosion, we used an installation to obtain high-enthalpy gas flows, the installation combining a plasma gun and an aerodynamic device, by means of the latter a gas flow is formed.
Software package for calculating the reflectance profile of axisymmetrically-shaped targets in resonant and high frequency wavelength ranges
Authors: Shustikov V. Y.
Published: April 2021

To develop software for solving the problem of electromagnetic wave diffraction at an object and calculate its scattering cross section, it is proposed to apply one of the most accurate, stable and common methods today - the integral equation method, confining its use to considering the targets with an axisymmetric surface shape, which often happens in practice. The study deals with a wide range of practical issues related to the application of the integral equation method for solids of revolution, with the main attention being paid to the conditions necessary for obtaining results with known-high accuracy. We present the software in which the proposed method is implemented, and give the results of calculations.
Target travel compensation on long-term accumulation of radar signals
Authors: Nikolaev A. P. , Krivonozhko I. S. , Sobkina N. Y.
Published: April 2021

The study describes four target travel compensation algorithms on long-term accumulation of radar signals reflected from high-speed targets. The efficiency of the algorithms is determined and the algorithms are compared by computational costs
Simulation of the vibration load impact on the powder charge consisting of granulated powder elements
Authors: Khmelnikov E. A. , Zavodova T. E. , Smagin K. V. , Dubinina S. F.
Published: April 2021

The paper focuses on the vibration load impact on the formed powder charge consisting of granulated powder elements. The purpose of the study is to develop a model that takes into account the compaction of the powder charge and mixing of the powder elements under the action of vibration loads
Mathematical simulation of the dependence of aircraft radiation power on the observation angle
Authors: Steshenko K. N. , Nikeev D. D. , Kolomyschev A. Y. , Gavrilov E. V.
Published: April 2021

The software model environment developed allows us to estimate the power characteristics of aircraft radiation at different observation angles. The method of implementation of this environment makes it possible to get results with an accuracy sufficient to determine the characteristics of the indicatrices of the aircraft under study. The high level of versatility of the model environment enables us to make calculations for any aircraft with different flight conditions in several spectral ranges
Explosive generators of high-speed preformed fragment flows
Authors: Zaplohova K. A. , Isaev G. S. , Kurepin A. E. , Sidorova E. V.
Published: April 2021

When assessing the effectiveness of ammunition designed to destroy various aerodynamic and ballistic targets, as the initial data on the vulnerability of the destruction objective, we use indicators obtained during experimental studies of the processes of fragments and fragment flow collision with various fragments of the target design. The results depend not only on the speed and mass of individual fragments, but also on their shape and location in the flow. The paper gives the results of the testing of an explosive thrower which provides the creation of a high-speed, i.e. ~5 km/s, flow of fragments of a given shape. Findings of research show satisfactory agreement between the results of calculations carried out in two- and three-dimensional statements with experimental data on high-speed throwing of a group of compact, parallelepiped, steel preformed fragments weighing 20 g each
Mathematical simulation of aircraft engine jet exhausts radiation
Authors: Guseva A. A. , Grigor’Ev I. S.
Published: April 2021

The paper deals with the problems of mathematical simulation of aircraft engine jet exhausts radiation, the simulation being carried out by means of shader subroutines for the concurrent computation of the radiative transfer equation on the video card resources. The combination of an analytical model of an isobaric jet and ray tracing of computation of the radiative transfer equation allows us to develop a flexible model of aircraft jet radiation, the model taking into account the main parameters of streams in the jet and in the co-current flow, the spectral lines of the radiating components, and provides real-time computation. For the graphic implementation of the model, the OpenGL standard is used
Thick-layered heat-protection coatings of the composition “ZrO2-Y2O3-ceramic fiber” for structural alloys protection
Authors: Zakirov I. F. , Nikulin A. D. , Obabkov N. V.
Published: April 2021

The paper introduces a technology for producing heat-protection ceramic coatings ZrO2-Y2O3, including the reinforcement of ceramics with ceramic fiber and metal substrates using nickel-chromium spirals. The microstructure, strength and heat resistance of the coating have been studied
Il-76TD air crash. Aircraft loading evaluation
Authors: Zhabunina O. Y. , Nikulshin M. V. , Putilin O. S.
Published: April 2021

The purpose of the paper was to study the accidental collision of the Il-76TD aircraft flying at speeds of up to240 m/s with an obstacle, and the condition of dangerous goods being transported. According to the results of calculations, comparisons with the available analytical solutions and data on real accidents, we developed a prediction model of the IL-76TD aircraft, the model reflecting the aircraft mass-dimensional and power characteristics. Furthermore, we estimated the parameters of the load pulse acting on the transported cargo and the impact of the obstacle material on them. The resulting load pulse parameters are the basis for the development of packaging, the design of which should ensure compliance with regulatory safety requirements for the transport of dangerous goods
On range super - resolution in a radar with many carriers. Simulation and experiment
Authors: Nagornykh I. L. , Bazhenov N. D.
Published: April 2021

The paper focuses on radar operation and the results of its simulation. The probing signal of the radar is a set of 16 orthogonal carriers. To determine the range in such radar, the MUSIC algorithm was applied, which relates to super - resolution methods. Findings of research show that the MUSIC algorithm makes it possible to increase the radar range resolution in the signal - to-noise 0-20 dB ratio by 4-8 times as compared with the traditional method based on the Fourier transform. The developed models were experimentally verified
Determination of geometric accuracy and surface roughness of small parts of circular and square sections, obtained depending on the printer location in the working space using selective laser melting technology from steel grade 12KH18N10T
Authors: Gorbatov I. V. , Orlov Y. A. , Antiufeev V. A. , Telgerekova T. V. , Orlova N. Y.
Published: April 2021

The introduction of additive technologies for the manufacture of parts will significantly improve the efficiency and mobility of production. The technology of selective laser melting has the greatest accuracy in the manufacture of metal and alloyed parts. There are a number of publications on the physical and mechanical properties of such products, which often exceed the properties of materials obtained by traditional technology, but there is no data on the geometric accuracy of manufacturing. This paper provides explicit data on geometric accuracy, depending on various factors.
Mathematical description of motion of a kinetic lateral control interceptor and assessment of its maneuvering potential
Authors: Nenartovich N. E. , Gorevich B. N.
Published: April 2021

The purpose of the study was to consider the motion features of kinetic lateral control interceptors and obtain dynamic equations which describe their motion in a flat rectangular coordinate system by resolving the acting forces with respect to the interceptor velocity vector. We took into consideration the nonuniformity of the interceptor motion and obtained formulas for evaluating indicators of its maneuvering potential. As an example, we assessed the capabilities of the THAAD interceptor missile (USA) in regards to the choice of missed interception
A method for measuring angular bearing errors in the “antenna - radome” system in the phased-array beam scanning region
Authors: Makushkin I. E. , Dorofeev A. E. , Gribanov A. N. , Gavrilova S. E. , Sinani A. I.
Published: April 2021

The paper introduces a method for measuring angular bearing errors in an antenna-radome system in a two-dimensional angular region of scanning of electronically steerable antenna, i.e. phased array antenna, active phased array antenna. The measurements were based on an antenna measuring collimator system - “compact testing ground”. The mathematical expressions used in processing the obtained data are given. To make a matrix of angular bearing errors, measurements are carried out at different angles of the heel of the antenna - radome system when the phased array antenna beam is deflected in oblique planes. To perfect the method at the initial stage, we used a quick-release model of the radome, which has the ability to introduce angular bearing errors
Secondary radar azimuth accuracy with increased surveillance speed
Authors: Topilin A. A.
Published: April 2021

The study introduces the dependence of the secondary radar aircraft azimuth accuracy on the space surveillance speed and the signal-to-noise ratio for various algorithms of the primary processing of radar data under the influence of normal Gaussian and Rice processes. The results obtained are practically applicable when upgrading software which implements the processing of radar data in existing radars
Analysis of experience in assessing the extent of full-scale testing of anti-aircraft missile products during development and modernization
Authors: Doronin V. V.
Published: April 2021

The paper focuses on the approach to assessing the number of launches of anti-aircraft missile products at various stages of full-scale tests required for the implementation of development work. We analyzed the approach to determining the extent of flight tests using the practical experience of the “MKB” Fakel” of 1960s. Furthermore, we proposed a method for estimating the cost of the experimental stage of development work
Mathematical modeling of noninvolute gearing
Authors: Timofeev B. P. , Kovalevich A. V.
Published: April 2021

The paper focuses on non-mating gears with linear contact, their teeth being a combination of planes and cylinders or only cylinders. To optimize the kinematic characteristics, it is proposed to use a new layout - multi-row gearing.
Methodological basis of statistical analysis of foreign trade
Authors: Dumanska Ilona , Matviiets Olha
Published: April 2021

The article is devoted to the study of methodological bases and information-analytical aspects of foreign trade statistics. The subject and main tasks of foreign trade statistics are determined. The general principles of formation of the official statistical methodology are considered. Methods of research of structure and dynamics of foreign trade are systematized. As a result, there are two main groups: non-formalized methods (qualitative) and formalized methods (quantitative). A system of indicators used for analytical characterization of foreign trade is proposed. The proposed system is the most informative for assessing foreign trade in order to form management decisions to solve the identified problems and increase the relevant performance indicators.
Mars’ Formation Can Constrain the Primordial Orbits of the Gas Giants
Authors: Woo Jason Man Yin , Stadel Joachim , Grimm Simon , Brasser Ramon
Published: April 2021

Recent high-precision meteoritic data infers that Mars finished its accretion rapidly within 10 Myr of the beginning of the Solar System and had an accretion zone that did not entirely overlap with the Earth’s. Here we present a detailed study of the accretion zone of planetary embryos from high-resolution simulations of planetesimals in a disk. We found that all simulations with Jupiter and Saturn on their current eccentric orbits (EJS) result in a similar accretion zone between fast-forming Mars and Earth-region embryos. Assuming more circular orbits for Jupiter and Saturn (CJS), on the other hand, has a significantly higher chance of forming Mars with an accretion zone not entirely dominated by Earth and Venus-region embryos; however, CJS in general forms Mars slower than in EJS. By further quantifying the degree of overlap between accretion zones of embryos in different regions with the average overlap coefficient (OVL), we found that the OVL of CJS shows a better match with the OVL from a chondritic isotopic mixing model of Earth and Mars, which indicates that the giant planets are likely to have resided on more circular orbits during gas disk dissipation than they do today, matching their suggested pre-instability orbits. More samples, including those from Mercury and Venus, could potentially confirm this hypothesis.
La Didactique professionnelle : origines, fondements, perspectives
Authors: Pastré Pierre
Published: April 2021

Ce texte présente un bilan des travaux réalisés en didactique professionnelle depuis ses origines jusqu’à aujourd’hui. Il ouvre également quelques perspectives pour l’avenir. Trois thèmes permettent de le résumer : l’analyse de l’activité, l’analyse des apprentissages, l’analyse des processus de formation. Seuls les deux premiers thèmes sont abordés dans cet article, le troisième ayant été beaucoup pratiqué par l’auteur, mais peu théorisé. Pour l’analyse de l’activité comme pour l’analyse des apprentissages, on aborde successivement les origines, les fondements et les ouvertures liés à chacun des deux thèmes. Un mouvement y apparaît : la didactique professionnelle s’est beaucoup centrée à ses débuts sur l’analyse du travail en vue de la formation. Et puis, peu à peu, elle s’est intéressée de plus en plus fortement à l’analyse des processus d’apprentissage, en notant qu’il n’y a pas d’activité sans apprentissage, au moins tacite, et qu’apprendre une activité est aussi une activité à part entière.
Junior Faculty Scholarly Personal Narrative
Authors: Wooten Cynthia B.
Published: April 2021

In this scholarly personal narrative (SPN), an assistant professor engages in a critical reflection of her journey towards tenure and promotion. The author parallels her journey to include the work done daily with preservice education students, as she works to prepare them for careers in teaching. According to the author, the intersectionality of the work done, and the expectations had for students are inseparable when conceptualizing and discussing the journey towards tenure and promotion. It is this intersectionality that has shaped the professor and a contributing factor to her success.
Navigating Teaching Evaluations
Authors: Rausch Meredith A. , Gallo Laura L.
Published: April 2021

The number of articles mentioning student evaluations of teaching is in the thousands, with research pointing to the positive and negative aspects of these evaluative measures. The use of the collected data from both students and peers may be used for merit raises, awards, yearly performance reviews, and the promotion and tenure process. Therefore, a new faculty must demonstrate effective teaching and their incorporation of student feedback in order to meet their institutional requirements. This chapter explores the basics of student evaluations of teaching, peer in-class observations, formative and summative purposes, and ways to utilize and cope with student and peer feedback regarding your teaching.
Turkish Academicians' Doctoral Processes
Authors: Turan Selahattin , Özkan Yeşim Özer , Özkan Metin
Published: April 2021

The purpose of this chapter is to examine the doctoral adventure of academicians working in Turkish higher education institutions within the framework of boundaryless career theory. Qualitative method was used to collect in-depth information. A two-stage process was followed in determining the participants of the study. Firstly, academicians who have completed their doctoral studies abroad will differentiate in social and human capital care, the ones who completed their doctorate in Turkey. Secondly, as the foundation of the independent identity of academicians, which is the most fundamental basis of boundaryless career theory, may change according to the institutionalization level of the universities. Participants were selected from a university with high-level institutionalization and a university with low-level institutionalization. The topics that stand out in the research can be listed as enjoyable aspects and difficulties of being an academician, competence of academics, relationship between advisor and academic career, meaning of the doctorate thesis, academic resistance.
Graduating From the School of Noranology
Authors: Frizzell Melanie M. , Brownlee Yolanda , Moffett Noran L.
Published: April 2021

The chapter sought to provide a summative reflection from the co-authors based upon narrative research. Two of the co-author designed questions for her mentor based upon Standard 6 of the ELCC Standards as related to the co-author's current careers and how the mentor mentee relationship assisted in formulating those careers. The mentor trained and mentored the co-authors using transformational leadership as the guiding principle for preparing the co-authors to become transformational educational leaders in their field.
Banking and Financial Services Industry in the Wake of Industrial Revolution 4.0
Authors: Bhandari Vibha
Published: April 2021

The banking and financial services industry today stands at the crossroads between the traditional methods of business and the evolving modern methods of banking and providing financial services. Technological advancement in the field of finance has led to a whole new form of doing business which is a radical departure from the conventional methods of doing business. The players in the field of banking and finance are facing challenges and competition from entities which never existed in the traditional sphere. The banking and financial industry is not only facing stiff competition from these new age players; it is also facing challenges to find fresh talent who can tide off this industry. This chapter in its existing form shall present an overview of the banking and financial industry of today in the wake of Industrial Revolution 4.0 and identify some associated challenges.
Integrated Model of Actual Online Shopping Use Behaviour
Authors: Yakasai Abubakar Mukhtar , Almunawar Mohammad Nabil , Anshari Mohammad
Published: April 2021

This chapter discusses and proposes an integrated model of actual online shopping use behaviour, with a moderating role of personal traits (openness to experience and agreeableness). Building on the TAM model, the proposed framework harnesses its factors from supported theories, namely social cognitive theory, source credibility theory, risk theory, and OCEAN model. A literature review approach is employed in which the author uses previous relevant studies to establish the relationship among the variables. Apart from direct relationships, the chapter conceptualises mediating role of Intention on the relationship between a set of predictors (internet self-efficacy, perceived channel credibility, financial and security risk) and actual online shopping usage behaviour. At the same time, the chapter explores the moderating role of openness to experience and agreeableness on the relationship between the TAM's belief constructs and intention. Finally, the chapter concludes with highlights on the framework's contributions, limitations, and plan for future empirical investigation.
The Effect of Blockchain Technology in the Initial Stages of Auditor Investigation in the Halal Supply Chain
Authors: Novianti Desi - , Arkeman Yandra , Almunawar Mohammad Nabil , Haditjaroko Liesbetini , Ismayana Andes
Published: April 2021

Each country in Asia will apply a halal assurance system (HAS) to get a halal certificate and logo. The problem with HAS in Asia is that every country has its own halal standard rules. This problem raises a trade dispute because imported products cannot enter another state market due to different halal standards. So, we need the same halal standards for every country in Asia, one of which requires transparency in each country's HAS. However, the HAS documentation process currently has several shortcomings, such as document fraud and transparency during internal and external audits. This chapter aims to discuss blockchain technology's development in solving internal audit problems to improve its performance, and blockchain technology can improve efficiency, transparency, and traceability of original documents, thereby enhancing the overall halal certification process. And it is hoped that this research will be taken into consideration for those who will make the same halal standards for every country in Asia.
Factors Influencing the Adoption and Use of E-Commerce Amongst Small Enterprises in Brunei
Authors: Hamidi Hafizah , Ariff Syamimi
Published: April 2021

The use of information communication technology (ICT) in the industry is undoubtedly growing fast all over the world. Nevertheless, many of the small enterprises, particularly in the food and beverages (F&B) industry in Brunei, are still not adapting as rapidly as anticipated. Thus, this study aims to identify and explore the key factors influencing Brunei's small enterprises to adopt e-commerce in their business based on Venkatesh and Davis technology acceptance model (TAM) framework. In attaining this purpose, in-depth interviews have been conducted with six local small enterprises. It can be concluded that there are four main factors contributing to the influence to the adoption and use of e-commerce amongst Bruneian's small enterprises, which are perceived usefulness, perceived ease-of-use, costs, and social influence.
An audit on perception of foreign medical students on the elective training programme, Department of Surgery, Faculty of Medicine, University of Ruhuna
Authors: Abeywickrema R. P. , Kumarasingha J. P. M. , Seneviratne R. W. , De Silva P. V.
Published: April 2021

Introduction: An elective clinical appointment abroad is a regular component in many foreign medical undergraduate curriculums. Department of Surgery, Faculty of Medicine, University of Ruhuna has a structured and comprehensive academic programme for them. Methods: An audit was performed to assess student perception on different aspects of the training via a selfadministered feedback form. All the elective students who completed their training during three months from 1st January 2019 were recruited. All data were entered to a database and statistical analysis was performed using SPSS version 25. The chi-square test was used to compare the groups and p < 0.05 was taken as statistically significant. Results: One hundred one (101) students completed the elective student feedback form (non-response rate - 4%). The large majority (77%) were in the 6th or final year of their medical training. 55% were enrolled to spend 8 weeks in surgery. Elective students have shown a high level of satisfaction regarding the elective training provided at our unit. Most satisfactory areas include pre-arrival registration (80%), introduction by the coordinator in surgery (92%) and different clinical activities such as elective ward rounds and clinics of the unit (>75% for every component). On-site registration (34%), guided tour by a departmental representative (54%) and the opportunity to assist in operations (50%) faired less favourably. Plastic surgery (30%), neurosurgery (21%) and paediatric surgery (20%) were preferred by those who opted to do specialty surgical appointments in addition to general surgery. Nearly all (96%) were happy to recommend this training to someone else. Conclusion: This study has enabled us to appraise the elective student programme for foreign students and for us to make suitable changes. A centre to coordinate elective students and offer of more hands-on surgical activities appears is justified.
Suicidal ideation and psychological wellbeing of adolescents in Galle education division
Authors: Lokanwaththa C. S. , Ponnamperuma T. T.
Published: April 2021

Introduction: Suicide is a global health problem affecting individuals of all ages. Sri Lanka shows a high suicide rate with a considerable number reporting from young age group. As suicidal ideation are present in victims before committing suicide Therefore, this study was designed to assess suicidal ideation among adolescents in Galle, Sri Lanka. Besides, the study assessed the general psychological wellbeing and factors associated with it in youth. Methods: School-based screening was conducted in a conveniently selected sample of students from six national schools in the Galle educational division. Questionnaires assessed lifetime suicidal ideation, attempts, and present psychological well-being (General Health Questionnaire GHQ30 ). Results: There were 1479 participants, age 16-19 years with 52% females. The lifetime prevalence of suicidal ideation in the sample was 22% with 11% having active ideation. Previous suicidal attempts were 4%. Compared to participants with no suicidal ideation, individuals with passive and active ideations had poor psychological well-being (F=152.86, p < 0.001). In logistic regression, the GHQ score predicted suicidal ideation [OR = 1.17, p < 0.001]. Further, present psychological wellbeing was associated with age, gender, socioeconomic status, happiness at school, and happiness at home, explaining 18.6% variances in the regression model. Conclusion and Recommendations: There is a considerably higher number of adolescents having suicidal ideation, and therefore, it is crucial to screen and identify these adolescents for help. Proper sustainable programs need to be implemented for this purpose and attention should be paid to improve the socioeconomic status, happiness at school, and happiness at home. Further research is recommended to obtain more in-depth information on suicidal ideations.