bluuebunny/crossref_metadata_2025 huggingface dataset:
Studentu veselīga dzīvesveida paradumi emocionālai labjūtei
Authors: Vecenāne Helēna
Published: April 2021

In the academic years of 2018/2019 and 2019/2020, a total of 122 full-time and part-time students were interviewed from study programmes ‘Teacher’ (LiepU) and ‘Sports Health’ (RSU Liepāja Branch). The research data shows that students should improve their healthy lifestyle habits in the following healthy lifestyle components: physical activity, eating habits and stress management, as 5.1 % of respondents have insufficient physical activity, which is a risk factor for chronic diseases, 37.7 % of students do not control the use of salt and sugar and 28.7 % of students are not using healthy methods to overcome stress. Evaluating students' emotional wellness it can be concluded that 40 % of students are able to maintain their emotional wellness at sufficiently good level, 51 % of students at satisfactory level, but 9 % at unsatisfactory level. Moderately close correlations are found between the following characteristic parameters of a healthy lifestyle component: physical activity, eating habits, stress management. There is a weak correlation between the indicators of emotional wellness and all healthy lifestyle components described in this study, except for the components that characterize the stress management.
Heikki Aittokoski: Onnellisten saari. Matka täydelliseen yhteiskuntaan
Authors: Kettunen Pekka
Published: April 2021

Heikki Aittokoski, Onnellisten saari. Matka täydelliseen yhteiskuntaan

Helsinki: Sanoma, 2020, 358 s.
Kaksisuuntainen katu
Authors: Värttö Mikko , Jäske Maija , Herne Kaisa , Grönlund Kimmo
Published: April 2021

Demokratiatutkijat pohtivat parhaillaan, miten puntaroivat kansalaiskeskustelut voitaisiin kytkeä perinteiseen edustukselliseen päätöksentekoon. Tutkimuskirjallisuudessa on esitetty, että poliitikkojen osallistuminen puntaroiviin kansalaiskeskusteluihin voisi vahvistaa puntaroivien kansalaiskeskustelujen kytköstä demokraattiseen päätöksentekoon. Tutkimme Turussa järjestetyn puntaroivan kansalaispaneelin avulla, miten poliitikkojen ja kansalaisten yhteinen keskustelu onnistuu ja miten poliitikot sen kokevat. Poliitikkojen osallistumisen on väitetty muun muassa vahvistavan poliitikkojen sitoutumista kansalaiskeskustelujen pohjalta tuotettuihin suosituksiin sekä lisäävän heidän intressiään edistää suosituksia päätöksenteossa. Toistaiseksi politiikkojen osallistumista puntaroiviin kansalaiskeskusteluihin on kuitenkin tutkittu hyvin vähän.

Lisätäksemme tietoa keinoista vahvistaa kytköksiä puntaroivien kansalaiskeskustelujen ja vaalidemokratian instituutioiden välillä tutkimme, kuinka kaupunginvaltuutettujen osallistuminen vaikutti Turku keskustelee -kansalaispaneelin työskentelyyn. Lisäksi tutkimme, kuinka valtuutetut kokivat osallistumisensa paneeliin sekä miten he suhtautuvat kuntalaisten suoraan poliittiseen osallistumiseen. Kansalaispaneeli järjestettiin toukokuussa 2020 ja siihen osallistui 171 kuntalaista sekä 21 valtuutettua. Paneelin aiheena oli kaupungin keskustan liikennejärjestelyt, ja paneelin jälkeen osallistujat äänestivät kolmen erilaisen skenaarion välillä.

Tutkimusta varten haastattelimme 11 paneeliin osallistunutta valtuutettua sekä teimme kyselyn, johon vastasi 17 valtuutettua ja 171 kuntalaista. Tutkimuksemme osoittaa, että valtuutettujen osallistuminen ei vaikuttanut kielteisesti puntaroivaan keskusteluun kansalaispaneelissa. Keskustelun aikana valtuutetut saivat lisää tietoa kuntalaisten toiveista ja tarpeista. Lisäksi keskustelu vahvisti valtuutettujen käsitystä kuntalaisten asiantuntijuudesta sekä kyvystä osallistua päätöksentekoon ja muodostaa valistuneita mielipiteitä. Valtuutetut myös suhtautuivat myönteisesti ajatukseen puntaroivien kansalaispaneelien käytöstä valtuustotyön tukena jatkossakin.
Rational cross-sectional design and behavioural analysis of the low-sag stressed ribbon pedestrian bridges/Rationale Querschnittsbemessung und Verhaltensanalyse der Fußgänger-Spannbandbrücken mit geringem Durchhang
Authors: Kleinas Vilius
Published: April 2021

Stress ribbon bridges represent one of the simplest and the most efficient modern bridge constructions used in modern lightweight pedestrian bridges. The article presents an analysis of the stress ribbon bridge behaviour by applying different values of constant loads, assessing the possibilities of using steels and composite materials. The article presents the methodology for the rational cross-section and shape design of the low-sag stressed ribbon structure, based on the rigidity conditions. The article discusses the structure‘s behaviour in asymmetric loads and provides recommendations for Design.
Digitalisierung in der Unternehmerpraxis
Authors: Klumpp Matthias , Loske Dominic
Published: April 2021

Effizienz messbar machen | Bei der Diskussion rund um die digitale Transformation sprechen Wissenschaftler und Praktiker häufig von neuen und in ihrem Ausmaß unbekannten Entwicklungs- und Anwendungspotenzialen. Gegenwärtig ist jedoch wenig darüber bekannt, wie diese Veränderungen die Arbeitssysteme logistischer Tätigkeiten tatsächlich verändern werden oder ob die Digitalisierungsschritte echte Effizienzgewinne hervorbringen. Die vorgestellte Analysemethode ermöglicht es Unternehmen, Effizienzverläufe bei Digitalisierungsmaßnahmen zu ermitteln und beispielsweise Handlungsoptionen, wie einen Qualifikationsbedarf von Mitarbeitern, abzuleiten.
10 Schlüsselfaktoren für erfolgreiche FTS-Projekte
Authors: Ullrich Günter
Published: April 2021

Orientierungshilfe | Fahrerlose Transportsysteme (FTS) sind zentraler Bestandteil moderner Intralogistik-Lösungen. Der Grund liegt darin, dass durch das FTS sowohl der Materialfluss als auch der Datenfluss an zentraler Stelle optimiert werden. Das FTS passt in unsere Zeit, die von Industrie 4.0 und Big Data geprägt ist. Die Automatisierung mit FTS lohnt sich bei einem Dreischichtbetrieb meist mit einem ROI von unter zwei Jahren.
Mit modernem Flottenmanagement den Kraftstoffverbrauch senken
Authors: Holz Stephan
Published: April 2021

Effizienzsteigerung | Fuhrparkmanager können mit intelligenter Software ihre Klimabilanz positiv beeinflussen und Kosten sparen. Flottenmanagement-Software kann helfen, den Kraftstoffverbrauch nachweislich zu reduzieren und die Leerlaufzeiten der Fahrzeuge zu senken. Das Ergebnis: Weniger schädliche Abgase gelangen in die Luft.
Servicerobotik macht mobil
Authors: Schön Manuel
Published: April 2021

Schnittstellen | Die zunehmende Automatisierung eröffnet für die intelligente Fabrik der Zukunft und somit für die Intralogistik neue Möglichkeiten: Als Assistenten des Menschen werden Roboter eine zentrale Rolle spielen, logistische Abläufe können durch die Kombination von Robotern mit Fahrerlosen Transportsystemen neue Formen annehmen. Gleichzeitig wachsen jedoch die Anforderungen an die Sicherheit.
Gezielte Planung mit cloudgestütztem Asset Tracker
Authors: Ruff Caius
Published: April 2021

Produktionslogistik | In vielen Produktionsanlagen gibt es Produktionsmittel, die besonders starker Abnutzung ausgesetzt sind – wie etwa Racks für die Galvanik oder Holzformen für den Betonguss. Neoception hat eine cloudgestützte Lösung entwickelt, um wartungsintensive Assets individuell zu verfolgen. So können Wartung und Austausch der Komponenten punktgenau nach dem tatsächlichen Bedarf durchgeführt werden, auch ohne aufwendige Inspektionen. Der Asset Tracker verschafft einen Überblick über den Prozess und erlaubt die Verwaltung der Daten per Fernzugriff.
„Sieaero“ revolutioniert die Freileitungsinspektion
Authors: Wernlein Michael
Published: April 2021

INSTANDHALTUNG | Siemens hat auf der European Utility Week in Wien, Österreich, unter der Bezeichnung Sieaero ein neues Konzept zur Freileitungsinspektion vorgestellt. Es verbessert mit unbemannten Luftfahrzeugen, künstlicher Intelligenz und digitalen Zwillingen den Service von Übertragungsleitungen. Flugdurchführung und Datenanalyse sind in wenigen Tagen statt in Wochen oder Monaten möglich und reduzieren die erheblichen Kosten bisheriger Hubschraubereinsätze.
„Marktdynamik verändert die Rolle der Hersteller“
Authors: de Vries Ton
Published: April 2021

PARTNERSCHAFTEN | Zusammen kommt man weiter als allein. Diese Erkenntnis machen sich vermehrt auch Global Tech Player zunutze, indem sie Partnerschaften suchen. Bentley Systems beispielsweise, international tätiger Anbieter von Softwarelösungen für Infrastrukturmanagement, kooperiert unter anderem mit Siemens, Microsoft und Topcon. BWK sprach mit Ton de Vries, Senior Director Business Development bei Bentley Systems, über die Gründe. Für den Niederländer sind Kooperationen eine zwangsläufige Folge der veränderten Anforderungen des Energiemarkts.
Ladekonzept für Deutschlands größte E-Tankstelle
Authors: Temme Thorsten
Published: April 2021

E-MOBILITY | Nachhaltigkeit konsequent umgesetzt – so entstand am Hauptsitz der Bechtle AG in Neckarsulm Deutschlands größte E-Tankstelle. Die Herausforderung dabei: 50 Ladepunkte in ein Parkhaus mit seinen spezifischen baulichen Gegebenheiten zu integrieren und mit der Photovoltaik (PV)-Anlage auf dem Dach zu versorgen. Die Wahl fiel auf das wartungsfreundliche Ladesystem „Zorro“ der RTB GmbH & Co. KG. Der Spezialist für Parkhaustechnik aus Bad Lippspringe setzt dabei auf Komponenten von Phoenix Contact.
Ganzheitlicher Ansatz erzielt Rekorde im Kraftwerksbau
Authors: Witzsch Martin
Published: April 2021

GUD-KRAFTWERKE | Drei Kraftwerke nebst Netzanbindung haben in Ägypten den Betrieb aufgenommen. Das Megaprojekt, der größte Einzelauftrag in der Firmengeschichte von Siemens, ist abgeschlossen. Tatsächlich abgeschlossen? Eigentlich beginnt das Projekt erst richtig. Neben der beispiellosen Verbesserung der Energieversorgung versprechen die begleitenden Vereinbarungen über Know-how-Transfer und Qualifizierungen langfristig Verbesserungen der Lebens- und Arbeitsbedingungen jenseits der Energieversorgung. Der Beitrag wirft einen Blick hinter die Kulissen.
Alle Netzszenarien im Griff
Authors: Sybel Till
Published: April 2021

STROMNETZE | Die fortschreitende Digitalisierung der Energiebranche bietet den Versorgern neue Wege der Instandhaltung und Bewirtschaftung von Netzkomponenten. Wie die Investitionen beim Ausbau des Netzes auf allen Ebenen durch den Einsatz intelligenter Betriebsmittel möglichst clever zu steuern sind, schildert Till Sybel, Geschäftsführer Vertrieb und Marketing, Technik und Innovation, der A. Eberle GmbH & Co. KG aus Nürnberg.
Funktionierende Blockchain aus der Schweiz
Authors: Würmli Marcel
Published: April 2021

BLOCKCHAIN | Die Negativschlagzeilen der letzten Wochen und Monate hallen und wirken nach. Marcel Würmli, Geschäftsführer der EnerBit GmbH aus dem schweizerischen Feusisberg, hat mit Skepsis zu kämpfen, wenn er seine Blockchain-Lösung heute Energieversorgern vorstellt. Dabei sind Vorurteile unberechtigt, denn bei ihm geht es natürlich nicht um Krypto-Währungen oder energiefressendes Mining, sondern um vorteilhaftes Management dezentraler Energieversorgungsprozesse. Im BWK-Gespräch erläutert Würmli Produktdetails und begründet, warum er optimistisch bleibt.
Einfach einen Mehrwert für alle schaffen
Authors: Pollmann Werner
Published: April 2021

SMART CITIES | Müssen Städte neu erfunden werden, da sie heute mit anderen Anforderungen konfrontiert sind, die sich aus der Digitalisierung und den daraus resultierenden Geschäftsmodellen ergeben? Diese Frage ist nicht nur von großen Städten zu beantworten, sondern auch von Kommunen, die um die 100 000 Einwohner haben. Mit der flexiblen „PLCnext Technology“ als Plattform für eine grenzenlose Automatisierung lassen sich die Ansprüche von Städten jeder Größenordnung umsetzen.
Energie aus dem Salz
Authors: Bauer Thomas
Published: April 2021

ENERGIESPEICHER | Für eine zukünftige klimaneutrale Energieversorgung mit volatilen erneuerbaren Quellen werden Energiespeicher benötigt. Im Niedertemperaturbereich dominieren Warmwasserspeicher den Gebäudewärmemarkt. Die Anwendungsfelder von Hochtemperatur-Wärmespeichern liegen hingegen im Bereich der energieintensiven Industrieprozesse und der Kraftwerkstechnik. Für diese Anwendungen untersucht das DLR in der „Testanlage für Wärmespeicherung in Salzschmelzen (Tesis, Test Facility for Thermal Energy Storage in Molten Salt)“ innovative Hochtemperatur-Wärmespeicher.
Mineralöl
Authors: Schult-Bornemann Karl-Heinz
Published: April 2021

Die politischen Einwirkungen auf den Ölpreis nähern sich dem Gewicht der Fundamentaldaten an – zumindest bei den kurzfristigen Ausschlägen. Die Förderpolitik der Opec und kooperierender Staaten – neuerdings „Opec +“ statt „Opec & Friends“ genannt – wurde oft unterlaufen durch Maßnahmen der US-Regierung. Dazu zählt die Verhängung von Sanktionen gegen den Iran im Zuge der Aufkündigung des (multilateralen) Atomvertrages, die auch die Ölexporte betrafen. Die deutliche Parteinahme Trumps für Saudi-Arabien, die im Vorjahr genauer beschrieben wurde [1], hat sich also noch gesteigert. Ob diese Hinwendung angesichts der Vorwürfe gegen den Kronprinzen Mohammed bin Salman im Zusammenhang mit der Ermordung des saudischen Journalisten Kashoggi weiter bestehen bleibt, ist offen. Deutschland hat einige Rüstungslieferungen an Saudi-Arabien gestoppt, das Land bleibt aber der größte ausländische Kunde der US-Rüstungsindustrie.
Wie das Internet der Dinge die Energiewende voranbringt
Authors: D’Amicis Giuseppe
Published: April 2021

SMART GRIDS | Intelligente Netze sollen helfen, die Energieversorgung zu dezentralisieren. Dies ist entscheidend, damit Strom aus regenerativen Quellen erzeugt und verteilt werden kann – eine Voraussetzung für das Gelingen der Energiewende. Hier kommen IT-Infrastrukturen zum Einsatz, mit denen sich Energieströme kostengünstig steuern und überwachen lassen. Mithilfe des Internet der Dinge (Internet of Things, IoT) können Messwerte und Statusinformationen erfasst und übertragen werden, vor allem über Low-Power-Netzwerke (LPWAN).
„Uns steht weiterhin große Dynamik ins Haus“
Authors: Hartlieb Christian
Published: April 2021

SOFTWARE | 25 Jahre sind für eine Software ein hohes Alter. Die Energiebranchenlösung XAP von Somentec ist über all die Jahre für den Markt attraktiv geblieben und zählt zu den Softwarestandards für Versorger. Christian Hartlieb, Mitgründer und Geschäftsführer der Somentec Software GmbH aus Langen, war von Beginn an Architekt der Entwicklung und Regisseur kontinuierlichen Systemwandels. Anlässlich des kürzlich begangenen Firmenjubiläums bat BWK ihn zur Rückschau und Analyse.
Schlüsselelement für eine umfassende Energiewende
Authors: Hebling Christopher
Published: April 2021

Sektorenkopplung | Der Umbau der Energiesysteme ist in vollem Gange – hierzulande und weltweit. Immer mehr fossile Kraftwerke werden abgeschaltet, Windenergie- und Photovoltaikanlagen sind auf dem Vormarsch. Der wachsende Anteil des erneuerbaren Stroms muss jedoch in Einklang mit dem Bedarf gebracht werden. Künftig wird daher eine Stärkung der vierten Säule des Energiesystems nötig: Neben Erzeugung, Transport und Verbrauch treten Speichertechnologien. Große Vorteile bietet hier der chemische Energieträger Wasserstoff – er ist flexibel herstell- und einsetzbar und kann große Anteile erneuerbarer Energien auch in die Sektoren Mobilität, Wärme und Industrie bringen. Ein aktueller Blick auf Technologie, Potenziale und die rasante internationale Entwicklung.
Zwei Zugpferde sind zu wenig
Authors: Koenemann Detlef
Published: April 2021

OFFSHORE-WINDKRAFT | Der Ausbau der Offshore-Windenergie in Europa geht langsamer voran als erwartet. In der Ostsee, aber auch vor den französischen Küsten besteht noch ein erheblicher Nachholbedarf.
Contribución a las cronologías absolutas en el Bajo de los Saladillos (Cuenca del Paraná Medio, prov. de Santa Fe)
Authors: Del Papa Mariano Carlos , Sardi Marina , Giobergia Carolina , Cocco Gabriel
Published: April 2021

Las investigaciones arqueológicas, correspondientes al Bajo de Los Saladillos, incluido el sistema lagunar Capón-Leyes-Setúbal (cuenca del río Paraná medio) provincia de Santa Fe, ha sido foco de interés arqueológico desde la segunda mitad del siglo XX. Estas investigaciones han demostrado la existencia de ocupaciones humanas desde el Holoceno tardío inicial (2000 años AP) hasta el Holoceno tardío final (500 AP). En este trabajo se presentan los resultados obtenidos de tres fechados radiocarbónicos realizados en restos óseos humanos, provenientes de los sitios arqueológicos Isla Barranquita II (IB II), Isla Cementerio (IC), El Capón I (EC I), que se encuentran localizados en el sector meridional del Bajo de Los Saladillos y el sistema lagunar Capón-Leyes-Setúbal. Estos resultados aportan los primeros fechados radiocarbónicos para el sector meridional de esta área de estudio y establece un nuevo piso cronológico de las ocupaciones humanas, contribuyendo con mayores elementos para la discusión sobre la dinámica poblacional de las sociedades cazadoras-recolectoras y pescadoras durante el Holoceno tardío.
Технология моделецентричного управления образовательным контентом в системах массового обучения
Authors: Щеглов Д. К. , Пиликов Н. А. , Выпрынцева О. С.
Published: April 2021

Предлагается программная технология управления образовательным контентом, которая позволяет создать эффективную систему подготовки специалистов и одновременно отвечает требованиям современного промышленного предприятия к повышению квалификации работников.
Antenna system for the reception of telemetry data with mobile unit
Authors: Vostrov D. O. , Balykin K. S. , Gorev A. V.
Published: April 2021

The system of reception of telemetry data via radio to the mobile unit. The system operates in an unlicensed frequency band ISN internationally at the frequency 869 MHz.
Admission information system installed on the aircraft IL-114LL
Authors: Vostrov D. O. , Balykin K. S. , Gorev A. V. , Gerasimov E. A. , Vorontsov A. V. , Bochkarev Yu. V.
Published: April 2021

The system of data reception on board a flying laboratory IL-114LL and command broadcast by radio. The system is designed in the form of a candy bar and provides management and control of the antenna pattern in the horizontal plane.
Methods of measuring the parameters and fault diagnosis phased antenna array in the near field without the use of mechanical positioners
Authors: Nenartovich N. E. , Balagurovsky V. A. , Manichev A. O.
Published: April 2021

The problem of measuring the parameters of phased antenna arrays without mechanical displacements of the test and / or the auxiliary antenna. Examples demonstrating the high efficiency and practical importance of this approach to measurement.
Methods for restoring the amplitude-phase distribution in the aperture in the spherical near-field scanning
Authors: Shubnikov V. V.
Published: April 2021

The methods of restoration of amplitude-phase distribution in the antenna aperture by a transition to a plane wave on the basis of the asymptotic behavior of the Hankel functions at infinity and by direct calculation of the intensity of the components of the vector in a spherical coordinate system and transfer to a Cartesian plane on a uniform grid. Powered by comparing them to the data computing and natural experiments.
Interference from the sea surface near the electrostatic system location
Authors: Lastavetski A. E.
Published: April 2021

The solution of the problem of the spatial structure of the secondary electric field due to rough sea surface in the field of third-party sources. It is shown that the energy spectrum of two-dimensional components of the electric field is determined as a result of the two-dimensional spatial filter filters the energy spectrum of sea surface height. Shows the frequency characteristics of the spatial filter and temporal power spectra of the components of the electric field when driving electrostatic locator over the sea surface.
Electrodynamic target selection techniques
Authors: Yatsyshen V. V. , Gordeev A. Yu.
Published: April 2021

We examine a new electrodynamic approach to target selection. The study shows that in the case of p-polarisation, a topological portrait of two types of angle reflectors is in a certain sense inverted in relation to that of the s-polarisation case, and consequently, evident polarisation dependence of angle reflector topological portraits may be traced.
Research aimed at expanding the range of permissible application modes of aircraft equipment
Authors: Zamyshlyaev A. A. , Shmygin A. N. , Donovskiy D. E.
Published: April 2021

The article shows a cycle of design-theoretical and laboratory work, which provided opportunities to significantly expand the application mode of aviation equipment without additional flight tests. The work was carried out in four stages: determination of impact air pressure and static pressure receiving coefficients, development of computer programs, laboratory bench-test at the air pressure receiving system (APRS) and APRS parameters computational determination in the whole range of application modes.
Mathematical simulation of rocket engine with a composite sectional charge
Authors: Madi V. V.
Published: April 2021

Due to the need to improve the appearance of the solid-propellant rocket engine, we stated the task of developing the methods allowing us to calculate internal ballistics performance of a composite sectional charge of solid propellant. These methods were implemented on a computer in the mathematical package MathCAD Prime 3.0, it has accuracy that is sufficient for technical evaluation of the rocket engine using solid propellant with the sectional charge.
Method of landing UAV of helicopter type using an infrared camera
Authors: Ivannikov K. V. , Gavrilov A. V. , Boev A. S. , Shoshin I. S.
Published: April 2021

The paper proposes using an infrared camera to detect the figure of a set of infrared emitters – guidance on the landing field. We developed an infrared guidance recognition algorithm and did its bench-test. Moreover, we made a program complex for modeling the landing field recognition during the landing of unmanned aerial vehicle (UAV) of helicopter type.
Optimum regular local spline interpolation of signals
Authors: Isakov V. N.
Published: April 2021

The study deals with an optimum approach to regular local signal interpolation by means of generalised splines. For the special case of local regular polynomial spline interpolation we derive quasi-optimal interpolation bases and provide corresponding recommendations dealing with selecting interpolation order and order of smoothness.
Modeling of coherent vortex structures and self-induced pressure oscillations in the combustion chamber of solid propellant
Authors: Glebov G. A. , Vysotskaya S. A.
Published: April 2021

The study focuses on numerical analysis of the flow structure in the rocket engine chamber of solid propellant with a recessed nozzle when self-induced pressure oscillations occur. Findings of the research show that the flow structure essentially depends on the shape of the flow part of the combustion chamber and is characterized by the formation of intense toroidal vortices. We propose a method for estimating the probability of occurrence of such vortices and their effect on the intensity of pressure pulsations in the combustion chamber.
Employing the Perona - Malik anisotropic filter for the problem of landing site detection
Authors: Shoshin I. S.
Published: April 2021

The article deals with implementing a Perona - Malik anisotropic smoothing filter on a GPU . The filter features a built-in edge detector and because of this is able to preserve meaningful contours during smoothing, but its computational complexity prevents using it in real-time mode. We used the scheme suggested as an element of a landing guide detection algorithm operating on a discrete digital image. The modified filter demonstrated high performance and processing quality during simulating an optical landing system for a copter-type unmanned aerial vehicle
The theory of discrete signals determined at finite intervals and its application for aerospace image processing
Authors: Svetlov G. V. , Sumenkov N. A. , Kostrov B. V. , Fokina N. S.
Published: April 2021

The purpose of the work was to generalize the well-known and proved by the authors ideas allowing us to expand the methods of applying orthogonal transformations in the field of aerospace image processing. A theoretical and methodological basis for application of Vilenkin - Krestenson's function systems has been built in a non-trigonometric, minimally possible form. According to the provisions and findings resulting from the theory of discrete signals at finite intervals, we offer the most viable option for constructing the basis functions system from the entire variety of Vilenkin - Krestenson's functions for which the signal shift is defined as the bitwise addition of numbers by a certain modulus. The theoretical and methodological provisions obtained are supported by the development of the algorithms for filtering and correlation analysis of aerospace images
Multi-channel integration of radiolocation signals reflected from accelerating high-speed targets
Authors: Porsev V. I. , Nikolaev A. P. , Krivonozhko I. S.
Published: April 2021

The paper determines the parameters of a coherent pulse-burst integrator with multi-channel capabilities interms of velocity and acceleration. We indicate the singularities of the pulse burst ambiguity function in the velocity-acceleration plane. We present algorithms for estimating velocity and acceleration. We propose a system for multi-channel matched filtering of an unmodulated coherent pulse burst with preliminary non-coherent integration, using which significantly reduces computational expenses. We determine the conditions that lead to the system exhibiting no threshold signal loss.
Professional experience of young scientists of Joint-Stock Company “Almaz – Antey” Air and Space Defence Corporation in selecting talented pupils at All-Russian Career Guidance Forum “ProeKTOriA”
Authors: Kovalenko A. F. , Konovalchik A. P. , Shcheglov D. K. , Fedorov D. A. , Bashkatova Yu. A.
Published: April 2021

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The method of exact solution of the problem of short-range guidance with two turns
Authors: Felikson A. E.
Published: April 2021

The task of determining the guidance parameters by the “two-turn maneuver” method is related to numerical solution of an equation defining the trajectory of the fighter-interceptor. We propose an easy-to-implement in software approach which is based on the exact solution of the problem at each step of the iterative process constructed by one of the parameters
25th Anniversary of the Federal System of Air Space Reconnaissance and Control of the Russian Federation: Evolvement and Development Stages
Authors: Bendersky G. P.
Published: April 2021

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Electrodynamic computations using ANSYS Electronics Desktop software controlled by a program developed in the MATLAB environment
Authors: Kuznetsov I. A. , Gribanov A. N. , Kurushin A. A. , Moseychuk G. F. , Sinani A. I.
Published: April 2021

The paper considers methods of controlling the process of electrodynamic structure simulation in the ANSYS Electronics Desktop software (previously known as ANSYS HFSS). The MATLAB software was leading the computation. In order to transmit data to the ANSYS Electronics Desktop software we employed the Microsoft Component Object Model technology, which makes it possible to combine software components into executables. We used simulation of a planar aperture phased antenna array to show the possibilities and limitations in controlling the ANSYS HFSS software subsequently outputting data to a text file and importing the latter into MATLAB for further computation. We present simulation results for a phased antenna array generated by the ANSYS Electronics Desktop software according to the array model compiled in MATLAB
The use of pseudonoise phase modulation broadband signals in radar surveys
Authors: Lozovskiy I. F.
Published: April 2021

The paper focuses on the problems of the use of pseudonoise phase modulation broadband signals in the radar survey. The average correlation characteristics of these signals in the Doppler frequency range and the structure of the processing system, including a multi-channel frequency matched filter, are determined. Methods of protecting the signal detection systems from the effects of narrow-band impulse and passive interference are proposed
Angular superresolution of signals using virtual antenna arrays
Authors: Porsev V. I. , Gelesev A. I. , Krasko A. G.
Published: April 2021

We analysed existing publications concerning virtual antenna arrays and determined the limitations of using them in radar systems for the case of prior uncertainty regarding angular positions of signal sources. The paper shows that it is possible to increase angular coordinate resolution for the case of prior uncertainty regarding angular positions of signal sources by employing a virtual antenna array at typical signal-to-noise ratios used in radar signal processing. We provide results of simulating the signals numerically, which confirm our analytical calculations.
Structural analysis of inclusions detected by x-ray inspection of preforms and parts from fine-grained graphite MPG-7
Authors: Vershinin A. V. , Belyakova E. G. , Vershinina M. V. , Polyakov E. V. , Bamburov V. G. , Baklanova I. V. , Vovkotrub E. G. , Yazovskikh K. A.
Published: April 2021

By X-ray diffraction analysis and Raman spectroscopy, we studied samples of fine-grained graphite MPG-7 with detected chemical and structural defects. We determined the effect of structural and chemical defects on the micro- and macrostructure of graphite and estimated its crystallinity depending on the type of defects detected.
A INTERDISCIPLINARIDADE DO ENSINO MÉDIO À UNIVERSIDADE
Authors: César Dias Lopes Gabriel
Published: April 2021

Este artigo discute o conceito de interdisciplinaridade, buscando sua historicização e seu contexto contemporaneamente. A  interdisciplinaridade enquanto movimento surgiu na Europa, principalmente na França e na Itália, em meados da década de 1960,  com o insurgimento dos movimentos estudantis reivindicando um novo estatuto de Universidade e de escola. O principal objetivo  destes era se opor a todo o conhecimento que privilegiasse o capitalismo epistemológico de certas ciências, criticar o currículo homogeneizador que privilegiava certas áreas do conhecimento em detrimento  daquelas que dariam ao aluno uma formação mais  humanista e filosófica. Usando uma pesquisa bibliográfica e descritiva e qualitativa que contemplo as grandes autoridades no  assunto  videncia-se aqui que o ensino disciplinar e desvinculado do contexto do  aluno não tem mais espaço na educação  contemporânea.
Methods of assessing the impact of dollarization on economic development
Authors: Chukurna Оlena
Published: April 2021

The article considers the transformation of the money function as a consequence of the impact of dollarization on the economic development of countries in the global context. The economic substantiation of the process of dollarization of the economy, which is connected with the function of money, is proved. The influence of dollarization on the macro – and macro levels of the economy is substantiated. Approaches to methods of estimating dollarization on the economic development of the country in the context of globalization are proposed.

The article defines the degree of dependence of the machine-building industry of Ukraine on the processes of dollarization of the world economy through the use of the effect of transferring the dynamics of changes in exchange rates to the price dynamics in the machine-building industry. Using the ARIMA model, the effect of transferring the exchange rate to prices for mechanical engineering products is proved. The expediency of using the ARIMA forecasting model to predict the further spread of the effect of the change in exchange rates on prices.

An approach is proposed to determine the sensitivity of domestic prices for the products of engineering enterprises to changes in the exchange rate through modified elasticity coefficients. It was determined factors affecting the size of the effect of transfer of the exchange rate on domestic prices for the products of machine-building enterprises.
On the Observational Difference between the Accretion Disk–Corona Connections among Super- and Sub-Eddington Accreting Active Galactic Nuclei
Authors: Liu Hezhen , Luo B. , Brandt W. N. , Brotherton Michael S. , Gallagher S. C. , Ni Q. , Shemmer Ohad , Timlin J. D.
Published: April 2021

We present a systematic X-ray and multiwavelength study of a sample of 47 active galactic nuclei (AGNs) with reverberation mapping measurements. This sample includes 21 super-Eddington accreting AGNs and 26 sub-Eddington accreting AGNs. Using high-state observations with simultaneous X-ray and UV/optical measurements, we investigate whether super-Eddington accreting AGNs exhibit different accretion disk–corona connections compared to sub-Eddington accreting AGNs. We find tight correlations between the X-ray-to-UV/optical spectral slope parameter (α
OX) and the monochromatic luminosity at 2500 Å (L
2500Å) for both the super- and sub-Eddington subsamples. The best-fit α
OX–L
2500Å relations are consistent overall, indicating that super-Eddington accreting AGNs are not particularly X-ray weak in general compared to sub-Eddington accreting AGNs. We find dependences of α
OX on both the Eddington ratio (L
Bol/L
Edd) and black hole mass (M
BH) parameters for our full sample. A multivariate linear regression analysis yields

, with a scatter similar to that of the α
OX–L
2500Å relation. The hard (rest-frame >2 keV) X-ray photon index (Γ) is strongly correlated with L
Bol/L
Edd for the full sample and the super-Eddington subsample, but these two parameters are not significantly correlated for the sub-Eddington subsample. A fraction of super-Eddington accreting AGNs show strong X-ray variability, probably due to small-scale gas absorption, and we highlight the importance of employing high-state (intrinsic) X-ray radiation to study the accretion disk–corona connections in AGNs.
Conjoint analysis to understand preferences of contraceptives among women of reproductive age in Ukraine
Authors: Mahanova Tamara , Tkachenko Natalia
Published: April 2021

This article describes the results of marketing research using conjoint analysis that was conducted to establish the preferences of contraceptives among women of reproductive age in Ukraine to further use the results for effective marketing decisions making in the pharmaceutical industry.

It was established that the women`s choice differs significantly depending on their main socioeconomic characteristics: age, income level, and level of education. Priority contraceptives from hormonal, non-hormonal contraceptives, as well as contraceptive medical devices for different age groups of women, was identified. Alfred Marshall’s main economic law was confirmed and the existence of price elasticity according to preferences was established.

The results obtained on women’s preferences for certain types of contraceptives will improve the level of compliance, women’s pharmaceutical safety and promote a balance between women’s needs and the capabilities of the contraception supply system.
Tuberculosis in Biologic-naïve Patients With Rheumatoid Arthritis: Risk Factors and Tuberculosis Characteristics
Authors: Sundbaum Johanna Karlsson , Arkema Elizabeth V. , Bruchfeld Judith , Jonsson Jerker , Askling Johan , Baecklund Eva
Published: April 2021

Objective

To investigate risk factors and characteristics of active tuberculosis (TB) in biologic-naïve patients with rheumatoid arthritis (RA).

Methods

We conducted a population-based case-control study using the Swedish Rheumatology Quality Register, the National Patient Register, and the Tuberculosis Register to identify RA patients with active TB and matched RA controls without TB between 2001–2014. Clinical data were obtained from medical records. TB risk was estimated as adjusted OR (aOR) with 95% CI using univariate and multivariable logistic regression analyses.

Results

After validation of diagnoses, the study included 31 RA patients with TB and 122 matched RA controls. All except 3 cases had reactivation of latent TB. Pulmonary TB was most prevalent (84%). Ever use of methotrexate was not associated with increased TB risk (aOR 0.8, 95% CI 0.3–2.0), whereas ever treatment with leflunomide (aOR 6.0, 95% CI 1.5–24.7), azathioprine (aOR 3.8, 95% CI 1.1–13.8), and prednisolone (PSL; aOR 2.4, 95% CI 1.0–6.0) was. There were no significant differences between maximum dose of PSL, treatment duration with PSL before TB, or cumulative dose of PSL the year before TB diagnosis between cases and controls. Obstructive pulmonary disease was associated with an increased TB risk (aOR 3.9, 95% CI 1.5–10.7).

Conclusion

Several RA-associated factors may contribute to increased TB risk in biologic-naïve patients with RA, making the risk of TB activation difficult to predict in the individual patient. To further decrease TB in patients with RA, the results suggest that screening for latent TB should also be considered in biologic-naïve patients.
GRAPPA Trainee Symposium 2020: A Summary of Oral and Poster Presentations
Authors: Richlin Christopher T. , Armstrong April , Johnsson Hanna , Mulder Michelle L.M.
Published: April 2021

The Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) held a trainee symposium at its 2020 virtual meeting. Dermatology and rheumatology trainees presented their work on psoriasis and psoriatic arthritis. This report briefly reviews the 5 oral presentations and 25 posters presented at the event.
Regard sur la didactique professionnelle
Authors: Astier Philippe
Published: April 2021

Pour les formateurs, la didactique professionnelle se présente comme une ressource pousvant orienter leurs pratiques et enrichir leurs réflexions. Elle est abordée ici sous trois aspects complémentaires : comme une démarche reliant la compréhension du travail à l’apprentissage, comme un champ conceptuel permettant d’appréhender et d’analyser la dimension cognitive « au fond de l’action » selon l’expression de G. Vergnaud et comme une contribution à une théorie du sujet en développement et en relation.
Les activités de guidage des formateurs au cours d’un audit destiné à des conducteurs expérimentés et âgés
Authors: Vidal-Gomel Christine , Boccara Vincent , Rogalski Janine , Delhomme Patricia
Published: April 2021

Cette étude porte sur l’activité de guidage de quatre formateurs au cours d’un trajet-test effectué par des conducteurs âgés. L’analyse des interventions des formateurs met en évidence deux types de guidage (différents en termes de forme, de contenu et de moment de l’intervention) et deux schèmes d’intervention au cours du trajet. Nous discutons ces résultats, d’une part, en nous interrogeant sur l’utilisation des interventions des formateurs pour identifier les difficultés des formés et, d’autre part, en nous intéressant à la fois aux caractéristiques des types de guidage et aux caractéristiques spécifiques des conducteurs âgés dans un objectif d’amélioration des formations observées.
Performance et conceptualisation : quelle place dans l’evaluation des competences professionnelles ?
Authors: Chenu Florent
Published: April 2021

L’article présente les premiers résultats d’une recherche menée sur l’évaluation des compétences professionnelles 1 . Plus précisément, ces travaux s’inspirent d’un texte de Mayen (2003) dans lequel il propose de prendre en compte des indicateurs basés sur la conceptualisation de l’action pour évaluer des compétences professionnelles. Le but de l’expérimentation est d’examiner quels liens existent entre performance et conceptualisation (explicitée) dans l’utilisation professionnelle d’un traitement de texte. Un dispositif a permis de rencontrer individuellement 32 personnes inscrites en formation professionnelle dans le domaine de la bureautique. Ces rencontres ont consisté en la réalisation de tâches de type professionnel, en la participation à un entretien d’explicitation à propos des raisonnements mis en oeuvre dans le cadre ces tâches et en l’administration d’un test mesurant de manière décontextualisée la maîtrise des commandes et outils du traitement de texte utiles voire nécessaires pour agir efficacement par rapport à ces tâches. Les premiers résultats sont les suivants : Les raisonnements repérés chez les personnes en formation ne semblent pas s’organiser comme d’autres travaux en didactique professionnelle décrivent qu’ils s’organisent chez des professionnels d’autres domaines. En effet, bien que le contenu des explicitations des sujets puisse être rapproché de « propositions tenues pour vraies sur le réel » (Vergnaud, 2002, p.20), on est loin de découvrir un système construit autour de concepts centraux organisant l’activité du sujet de manière globale. Ce n’est pas une esquisse de modèle opératif (Pastré, 2007, 2008a, 2008b) qui apparaît mais plutôt un éventail large de raisonnements, de principes, de règles relativement indépendants les uns des autres, pour décrire ou/et justifier des actions et des manipulations limitées. Des catégories peuvent être établies pour caractériser les modes de raisonnements véhiculés relevés dans les explicitations des sujets rencontrés, notamment par rapport à leur degré de rationalité. Ce texte présente un premier contour de ces catégories.
Gut microbial differences in breast and prostate cancer cases from two randomised controlled trials compared to matched cancer-free controls
Authors: Smith K.S. , Frugé A.D. , van der Pol W. , Caston N.E. , Morrow C.D. , Demark-Wahnefried W. , Carson T.L.
Published: April 2021

Implicated in several chronic diseases, the gastrointestinal microbiome is hypothesised to influence carcinogenesis. We compared faecal microbiota of newly diagnosed treatment-naïve overweight and obese cancer patients and matched controls. Cases were enrolled in presurgical weight-loss trials for breast (NCT02224807) and prostate (NCT01886677) cancers and had a body mass index (BMI) ≥25 kg/m2. Cancer-free controls were matched 1:1 by age (±5 years), race, gender, and BMI (±5 kg/m2). All participants provided faecal samples; isolated bacterial DNA were PCR amplified at the V4 region of the 16S rRNA gene and analysed using the QIIME pipeline. Tests compared cases versus controls, then separately by gender. Microbial alpha-diversity and beta-diversity were assessed, and relative abundance of Operational Taxonomic Units (OTU’s) were compared at the genus level, with false discovery rate (FDR) correction. 22 overweight and obese cancer patients were matched with 22 cancer-free controls, with an average BMI of 30.5±4.3 kg/m2, age 54.4±5.3 years, and 54.5% were black. Fourteen matches were made between breast cancer cases and healthy female controls, and 8 matches were made with prostate cancer cases and healthy male controls. Comparison of all cases and controls revealed no differences in alpha diversity, though prostate cancer patients had higher Chao1 (P=0.006) and Observed Species (P=0.036) than cancer-free males. Beta-diversity metrics were significantly different between cases and controls (P<0.03 for all tests in whole sample and in men), though only unweighted Unifrac was different in women (P=0.005). Kruskal Wallis tests indicated significant differences among 16 genera in all matches, 9 in female, and 51 in male. This study suggests the faecal microbiota of treatment-naive breast and prostate cancer patients differs from controls, though larger samples are needed to substantiate these findings. Trial registration: NIH Clinical Trials, NCT01886677, NCT02224807, registered 26 June 2013, 25 Aug 2014 (respectively) – retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT01886677; https://clinicaltrials.gov/ct2/show/NCT02224807
Metabarcoding analysis of gut microbiota of healthy individuals reveals impact of probiotic and maltodextrin consumption
Authors: Calgaro M. , Pandolfo M. , Salvetti E. , Marotta A. , Larini I. , Pane M. , Amoruso A. , Del Casale A. , Vitulo N. , Fiorio M. , Felis G.E.
Published: April 2021

In a previously published double-blind, placebo-controlled study, we showed that probiotics intake exerted a positive effect on sleep quality and a general improvement across time in different aspects of the profile of mood state, like sadness, anger, and fatigue in 33 healthy individuals. The present work investigates the impact of the probiotic product, constituted of Limosilactobacillus fermentum LF16, Lacticaseibacillus rhamnosus LR06, Lactiplantibacillus plantarum LP01 (all former members of Lactobacillus genus), and Bifidobacterium longum 04, on the gut microbiota composition of the same cohort through a metabarcoding analysis. Both the placebo and probiotic treatments had a significant impact on the microbiota composition. Statistical analysis showed that the microbiota of the individuals could be clustered into three groups, or bacteriotypes, at the baseline, and, inherently, bacterial compositions were linked to different responses to probiotic and placebo intakes. Interestingly, L. rhamnosus and L. fermentum were retrieved in the probiotic-treated cohort, while a bifidogenic effect of maltodextrin, used as placebo, was observed. The present study shed light on the importance of defining bacteriotypes to assess the impact of interventions on the gut microbiota and allowed to reveal microbial components which could be related to positive effects (i.e. sleep quality improvement) to be verified in further studies.
Embracing Ensemble Species Distribution Models to Inform At-Risk Species Status Assessments
Authors: Ramirez-Reyes Carlos , Nazeri Mona , Street Garrett , Jones-Farrand D. Todd , Vilella Francisco J. , Evans Kristine O.
Published: April 2021

Conservation planning depends on reliable information regarding the geographic distribution of species. However, our knowledge of species' distributions is often incomplete, especially when species are cryptic, difficult to survey, or rare. The use of species distribution models has increased in recent years and proven a valuable tool to evaluate habitat suitability for species. However, practitioners have yet to fully adopt the potential of species distribution models to inform conservation efforts for information-limited species. Here, we describe a species distribution modeling approach for at-risk species that could better inform U.S. Fish and Wildlife Service's species status assessments and help facilitate conservation decisions. We applied four modeling techniques (generalized additive, maximum entropy, generalized boosted, and weighted ensemble) to occurrence data for four at-risk species proposed for listing under the U.S. Endangered Species Act (Papaipema eryngii, Macbridea caroliniana, Scutellaria ocmulgee, and Balduina atropurpurea) in the Southeastern United States. The use of ensemble models reduced uncertainty caused by differences among modeling techniques, with a consequent improvement of predictive accuracy of fitted models. Incorporating an ensemble modeling approach into species status assessments and similar frameworks is likely to benefit survey efforts, inform recovery activities, and provide more robust status assessments for at-risk species. We emphasize that co-producing species distribution models in close collaboration with species experts has the potential to provide better calibration data and model refinements, which could ultimately improve reliance and use of model outputs.
Evolving, Transforming, and Making Meaning in the Doctoral Journey
Authors: Arnold Harriett B.
Published: April 2021

Utilizing theoretical foundations from culture, spirituality, and emotions in education, this chapter will uniquely and collectively aim to go beyond a single pedagogy to encompass a broad and diverse territory. It will explore more deeply and systematically the significance of understanding the complexity of the phenomena of discovering pedagogical influences on the doctoral process, as well as cognitive and emotional outcomes within and outside of the classroom. What are the roles of meaning and purpose in the doctoral program process? How important is future work and professionalism associated with career placement? Are there connections to professionalism and individual doctoral research? These questions will be explored in this chapter.