bluuebunny/crossref_metadata_2025_split huggingface dataset:
A case report of dermatomyositis with the missed diagnosis of non-small cell lung cancer and concurrence of pulmonary tuberculosis
Authors: Yin Yuting , Chi Jing , Bai Yang 
Published: March 2022

Abstract
A 42-year-old man with four months of retrosternal pain and two months of skin rashes and proximal muscle weakness was diagnosed with dermatomyositis (DM) based on muscle enzyme analysis and needle electromyography. Chest computed tomography (CT) showed scattered inflammation nodules in both lungs’ upper lobes with negative sputum smear for lung cancer and pulmonary tuberculosis (TB). A good clinical response to oral prednisone was obtained, except for the retrosternal pain in the preceding two months. Urgent CT pulmonary angiography ruled out pulmonary thromboembolism but revealed squamous cell lung cancer with metastases in the sternum and mediastinal lymph nodes. In retrospect, we found osteolytic destruction consistent with sternal metastasis on CT taken at the initial treatment of DM, which was missed by radiologists. Simultaneously, the man was diagnosed with pulmonary TB based on rapid mycobacterial TB detection. This case report indicates the radiologic errors and highlights the importance of a thorough search for underlying lung cancer and pulmonary TB in patients with DM, especially in countries with a high TB burden.
Bewertung der Rissausbreitung an Federstellen in Zungenschienen
Authors: Budnitzki Grigori , Edel Karl-Otto , Schumann Lars 
Published: March 2022

Abstract
Im Bereich des Querschnittsübergangs der Federstelle bilden sich unter ungünstigen Umständen im Fuß von Zungenschienen Ermüdungsrisse, die letztlich den Bruch der Schiene verursachen können. Zur Qualifizierung der Bewertungskriterien, d.h. des Prüfzyklusses der zerstörungsfreien Prüfung der Zungenschienen, wird die bruchmechanische Analyse als Monte-Carlo-Simulation gestaltet. Aus dem ungünstigsten Risswachstumsverhalten wird für die zerstörungsfrei ermittelte Rissgröße der erforderliche Prüfzyklus in Abhängigkeit von der Betriebsbelastung abgeleitet.
Automatisierung zerstörungsfreier Prüfverfahren für das Bauwesen
Authors: Taffe Alexander , Gardei André , Krause Martin , Maierhofer Christiane , Wiggenhauser Herbert 
Published: March 2022

Abstract
In der BAM wurde als Gemeinschaftsvorhaben der Fachgruppe „Zerstörungsfreie Schadensdiagnose und Umweltmessverfahren“ ein rechnergesteuerter Messabtaster für Bauwerksteile (Baustellenscanner) entwickelt. Es handelt sich um ein auf Schienen verfahrbares modulares System mit einem multifunktionalen Messkopf für mehrere zerstörungsfreie Prüfverfahren. Mit dem Baustellenscanner können Objekte wie Brücken oder Fundamentplatten schneller und genauer als bisher bei gleichzeitig reduziertem Personalaufwand untersucht werden.
Endformnahe Mikrobauteile durch superplastische Umformung von metallischem Massivglas
Authors: Macht Michael-Peter , Zumkley Thomas , Suzuki Shinsuke , Mechler Stefan 
Published: March 2022

Kurzfassung
Das metallische Massivglas Zr46.8Ti8.2Cu7.5Ni10Be27.5 (V4) ist aufgrund seiner guten Festigkeitseigenschaften und seiner glatten Oberfläche ein geeignetes Material für mechanisch beanspruchte Mikrobauteile. Die große Stabilität dieses Glases gegen Kristallisation erlaubt die endformnahe Herstellung von Mikrobauteilen durch superplastische Formgebung unter geringen Drucken bei Temperaturen oberhalb des Glasübergangs. Durch Pressen des V4-Glases mit einem Druck von 5 MPa bei 653 K in tiefgeätzte Si-Formen bzw. in nach dem UV-LIGA-Verfahren hergestellte NiCo-Pressformen können Mikrobauteile von bis zu 500 μm Dicke, mit Detailabmessungen von weniger als 50 μm, mit hoher Präzision und Oberflächengüte hergestellt werden.
The Effect of the Process Temperature on the Bondability in Diffusion Bonding of Ferritic (AISI 430) with Martensitic (AISI 420) Stainless Steels
Authors: Kolukisa Sedat , Taskin Mustafa , Ozan Sermin 
Published: March 2022

Abstract
The effect of process temperature on the bondability of ferritic (AISI-430) and martensitic (AISI-420) stainless steels was studied. Diffusion bonding was investigated experimentally under a protective atmosphere at various temperatures and a defined constant pressure. Microstructure examinations were carried out by the help of SEM and EDS. Hardness values were measured by HV scale under a load of 150 g. A mutual migration of Cr and C atoms was observed, causing a relatively hard microstructure along the interface. Best mechanical and metallurgical properties were observed for the specimen bonded at 1100°C process temperature at 12 MPa, for 20 min.
Experimental study on surface wrapping strengthening of EPS particles and its concrete performance
Authors: Ji Yuan , Weilong Li , Linbing Wang , Jianjun Wang , Hailu Yang , Wenhua Zhang , Zhenzhen Xiong 
Published: March 2022

Abstract
Expanded polystyrene (EPS) concrete is a low-carbon green building material, which has the properties of thermal insulation, but its strength is not high at present. To improve the strength of EPS concrete, EPS particles were wrapped on the surface by magnesium phosphate cement, ultra-high performance concrete, and waterborne polyurethane, they were used to make concrete after aging, and then the strength and microproperties of concrete were tested. The test results show that the wrapping material form a shell structure on the surface of EPS particles; the hydrophilic property of the wrapped EPS particles and the uniformity of the concrete have been significantly improved; the contact between the wrapped EPS particles and the cement base has become more closer; the cube compressive strength of concrete is increased by 80–110%, the flexural strength of concrete is increased by 40–90%. The research results of this study are of great significance for EPS concrete used as structural material and fabricated lightweight wallboard.
The Name »Berechiah« in Sach 1
Authors: Leuchter Mark 
Published: March 2022

Abstract
The name »Berechiah« in Sach 1,1.7 is often regarded as the name of the father of the prophet Zechariah and part of the prophet’s patronymic information. However, it is more likely a reference to Baruch b. Neriah, the scribe symbolically associated with formation of much material in the book of Jeremiah. The present study considers the role that Baruch played in the lore associated with Jeremiah cultivated during the exilic period, and the status of Baruch as a patron saint of scribalism among the Yehudite literati of the Persian period. This, in turn, affected the redaction of reception of the developing book of Zechariah, where the name and memory of Baruch could lend authority to the work and those who shaped it.
Das Alter des masoretischen Sonderguts im Jeremiabuch (Teil 2)
Authors: Stipp Hermann-Josef 
Published: March 2022

Zusammenfassung
Nach der überwiegend negativ verlaufenen Prüfung älterer Datierungsvorschläge für das masoretische Sondergut des Jeremiabuches im 1. Teil des Aufsatzes versucht der 2. Teil, belastbare Datierungskriterien zu erschließen. Das Alter der jüngsten noch in die alexandrinische Ausgabe des Buches eingegangenen Einheiten, die mit der Reorganisation des Buchaufbaus verbundene Umdeutung des Elamorakels 49,34–39 sowie prägende Eigenarten des masoretischen Sonderguts (konzeptionelle Abstinenz, Homogenisierung auch über die Buchgrenzen hinaus, Fehlerkonservierung, das Überleben bestimmter idiolektaler Elemente) deuten auf das 3. Jahrhundert als den Entstehungszeitraum der meisten masoretischen Sonderlesarten. Im Hinblick auf aktuelle Debatten um linguistische Datierungsmethoden gibt das Ergebnis Anlass, die Treffsicherheit solcher Verfahren eher gering einzuschätzen.
Investitionsgüterhersteller nutzen Standards im internationalen Dienstleistungsmanagement
Authors: Spath Dieter , Mörschel Inka C. , Zähringer Daniel 
Published: March 2022

AbstractAusgehend von dem internationalen Umfeld, in dem die Investitionsgüterindustrie agiert, und dem dort vorherrschenden Wachstumspotenzial mit Dienstleistungen, hat das Institut für Arbeitswissenschaft und Technologiemanagement (IAT) in Kooperation mit dem Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO eine Studie durchgeführt. Dabei wurde die Rolle von Standards bei der Internationalisierung von Dienstleistungen untersucht. Das Ergebnis sind Beispiele für Anwendungsgebiete, Nutzen und Handlungsempfehlungen.
Risikobeherrschung in Beschaffungsnetzwerken
Authors: Specht Dieter , Mieke Christian , Behrens Stefan 
Published: March 2022

Abstract
In der Beschaffung ist ein Unternehmen unterschiedlichen Risiken ausgesetzt. Zu nennen sind beispielsweise Bedarfsdeckungsrisiken, Lieferrisiken, Transportrisiken und Lagerrisiken. Der Zusammenschluss in Netzwerken soll einerseits einer Verringerung der genannten Risiken dienen, andererseits kommen jedoch in Netzwerken grundsätzlich neue Risiken zum Tragen, wie zum Beispiel das Risiko des unkontrollierten Know-how-Verlustes oder opportunistische Verhaltensweisen. Insbesondere bei der Beschaffung von Hochtechnologieprodukten sind Netzwerke für KMU hilfreich, um in schnell wechselnden Beschaffungskontexten im Wettbewerb bestehen zu können. Die genannten Netzwerkrisiken sind von besonderer Bedeutung, da durch die anforderungsgerechte Beschaffung von Technologieprodukten oft ein signifikanter Wettbewerbsvorteil zu erzielen ist.
Gleichmäßiger Fluss auch bei schwankender Nachfrage
Authors: Wiegand Bodo 
Published: March 2022

Abstract
Um die Bedarfe des Marktes erfüllen und dabei auch wirtschaftlich arbeiten zu können, ist ein kontinuierlicher Materialfluss notwendig, der mit einem Minimum an Steuerungsaufwand und Beständen auskommt. Idealerweise werden dazu Kapazitäten, Bestände und Abläufe in einem Produktionssystem so organisiert, dass auch bei schwankendem Bedarf auf der Kundenseite ein gleichmäßiger Materialfluss nach dem Pull-Prinzip erreicht wird. Für verschiedene Produkte gilt es dabei, die Produktionsvolumina zu glätten und die Wertströme sinnvoll zu kombinieren. Dazu bietet Lean Management die entsprechenden Methoden.
Produktdatenmanagement im Maschinen- und Anlagenbau
Authors: Ulrich Thomas 
Published: March 2022

Abstract
Um signifikante Kosten- und Zeitvorteile im Maschinen- und Anlagenbau zu aktivieren, ist heutzutage die Integration aller Projekt-, Produkt- und Prozess-Informationen von höchster Wichtigkeit. Dynamischer technischer Fortschritt, großer Konkurrenzdruck und individuelle Kundenanforderungen stellen produzierende Unternehmen vor erhebliche Herausforderungen. Es gilt, unter Zeitdruck zu entwickeln, zu bauen und zu installieren und zusätzlich ein gutes Servicegeschäft anzubieten. Ein effizientes maschinen- und anlagenbauspezifisches Projektdatenmanagement ist bei der Fülle von Aufgaben und Informationen notwendig, um in jeder Phase der Projektabwicklung einen einfachen Zugriff auf alle aktuell gültigen Projektdaten und Informationen zu gewährleisten. Dabei weist der Maschinen- und Anlagenbau besondere Merkmale auf, die es nicht zulassen, klassische PDM- bzw. PLM-Ansätze als markt- und zukunftsorientierte Abwicklungsstrategien zu übernehmen. Zur Realisierung eines geeigneten Projektdatenmanagements werden in diesem Fachartikel zwei Schritte vorgeschlagen und beispielhaft skizziert.
Devising technologies for harvesting hemp with belt threshers
Authors: Sheichenko Viktor , Shevchuk Vitaliy , Dudnikov Igor , Koropchenko Serhii , Dnes Viktor , Skoriak Yuliia , Skibchyk Volodymyr 
Published: March 2022

This paper reports the system of devised technologies for harvesting hemp with belt hemp threshers. It is proposed to form a roll of mowed hemp stems on a belt and tramp it to the field edge for further processing of stems. That makes it possible to significantly improve the efficiency of mechanized processes when harvesting and processing the entire biological harvest of hemp. Thus, the level of handling hemp production systems has been increased. At the same time, the management of the process of roll formation of hemp stems has been improved.
The technology of hemp harvesting has been improved with the possibility of obtaining raw materials for long fiber and therapeutic preparations. Two-phase harvesting (for seeds and fiber) has been proposed to be implemented by using belt hemp threshers included in the stationary (semi-stationary) complexes.
The possibility of preparing the combed hemp retted stalks by spreading them on materials of various types has been systematically substantiated.
The influence of the thickness of a layer of hemp stalks spread out for the preparation of retted stalks on the timing of their preparation and fiber quality indicators has been investigated.
It was established that in terms of the quality indicators of the produced fiber, the retted stalks from all experiments are properly aged while the efficiency of their processing for medium- and large-stalk fraction is high.
The fibers produced in all experiments were characterized by purity, as well as high indicators of breaking load and handful length.
As regards the linear density, the fibers’ values in all experimental variants exceeded the normative ones by 1.65‒2.64 times, which rendered them non-standard.
An increase in the values of quality indicators has been established with the corresponding change, from 1 to 3 kilograms per meter, in the thickness of the layer of combed hemp stalks. The breaking load, under such conditions, increased by 16.6 %; the linear density, by 20 %; the content of shives, by 60 %; the «paw» content, by 12.5 %, the content of bast strands, by 10.8 %.
Method for reducing longitudinal spherical aberration of intraocular lenses
Authors: Polishchuk Oleksandr , Kozyar Vasiliy , Zhaboiedov Dmytro 
Published: March 2022

It has been established that of all types of aberrations following the implantation of intraocular lenses, the most significant is spherical, inherent in the spherical optics in various aspects. This paper proposes a method for reducing the longitudinal spherical aberration of intraocular lenses by applying an additional optical layer onto their surface. To reduce spherical aberration, the thickness of a layer of polytetrafluoroethylene (Teflon) was simulated in the programming environment Zemax 13 (USA). Calculations that were performed included refractive indices of the environment and the material of the optics. It was established that in order to reduce the value of the longitudinal spherical aberration of an intraocular lens made of hydrophobic acrylic, the thickness of aTeflon layer should be about 100 nm.
The results of spraying indicate an improvement in the optical characteristics of the lens by reducing longitudinal spherical aberration. When examining different areas of lenses with spraying, it was established that there is no spherical aberration in the lens area. In the 4 mm zone, the spherical aberration indicator decreased by 4 times compared to the original lens. In the region with a diameter of 6 mm, spherical aberration decreased by 0.2. Applying a layer of Teflon reduced Fresnel reflection by 4 times, which improves the sensitivity and contrast of vision. The hydrophobic properties of Teflon provide the anti-adhesive state of the lens, which is a counteraction to the development of secondary cataracts. The SolidWorks 19 software (France) was used to design a model of the lens "NVision Optics" whose aberrations were eliminated as much as possible
Developing the algorithm and software for access token protection using request signing with temporary secret
Authors: Bukovetskyi Vasyl , Rizak Vasyl 
Published: March 2022

This paper proposes a method for protecting the access tokens in client-server data exchange without saving the state based on the formation of the signature of the request using a temporary secret. The devised method allows one not to transfer access tokens with each request, which would make it possible for the attacker to authenticate as a valid user when compromising the connection, for example, when using a «person in the middle» attack.
Two variants of the method have been proposed and substantiated – simplified and improved, the scope of which depends on the needs for protection and technical capabilities of their implementation. The robustness of both variants is ensured by the practical inability to select the initial input data of the hash function used to form the signature. The improved version also makes it possible to protect access tokens at the stage of receiving them and provides protection against the attack of the recurrence of the request. Initial user authentication protection is achieved by using the Diffie-Hellman protocol to exchange a secret and access token. Using query IDs and time labels prevents the query from being reused.
Advanced security for access tokens is important because having an attacker’s access token gives the attacker full control over the user account. The use of SSL/TLS may not produce the desired level of protection for such important data.
It was established that the use of the proposed method does not add significant time costs. The SHA-256 hash function example shows that the relationship between message size and extra time to send and receive a message is linear. When using the proposed method in the browser, the absolute value of additional time spent for messages from 100 bytes to 2,048 KB ranges from 0.4 ms to 142 ms. Given this, the proposed method could be used without significant impact on the experience of use.
Development of a method for training artificial neural networks for intelligent decision support systems
Authors: Mahdi Qasim Abbood , Shyshatskyi Andrii , Symonenko Oleksandr , Protas Nadiia , Trotsko Oleksandr , Kyvliuk Volodymyr , Shulhin Artem , Steshenko Petro , Ostapchuk Eduard , Holenkovska Tetiana 
Published: March 2022

We developed a method of training artificial neural networks for intelligent decision support systems. A distinctive feature of the proposed method consists in training not only the synaptic weights of an artificial neural network, but also the type and parameters of the membership function. In case of impossibility to ensure a given quality of functioning of artificial neural networks by training the parameters of an artificial neural network, the architecture of artificial neural networks is trained. The choice of architecture, type and parameters of the membership function is based on the computing resources of the device and taking into account the type and amount of information coming to the input of the artificial neural network. Another distinctive feature of the developed method is that no preliminary calculation data are required to calculate the input data. The development of the proposed method is due to the need for training artificial neural networks for intelligent decision support systems, in order to process more information, while making unambiguous decisions. According to the results of the study, this training method provides on average 10–18 % higher efficiency of training artificial neural networks and does not accumulate training errors. This method will allow training artificial neural networks by training the parameters and architecture, determining effective measures to improve the efficiency of artificial neural networks. This method will allow reducing the use of computing resources of decision support systems, developing measures to improve the efficiency of training artificial neural networks, increasing the efficiency of information processing in artificial neural networks.
Development of pipelined polynomial multiplier modulo irreducible polynomials for cryptosystems
Authors: Tynymbayev Sakhybay , Ibraimov Margulan , Namazbayev Timur , Gnatyuk Sergiy 
Published: March 2022

In this paper, we consider a schematic solution of the pipeline multiplier modulo, where multiplication begins with the analysis of the lowest order of the polynomial multiplier, which can serve as an operating unit for high-speed encryption and decryption of data by hardware implementation of cryptosystems based on a non-positional polynomial notation. The functional diagram of the pipeline and the structure of its logical blocks, as well as an example of performing the operation of multiplying polynomials modulo, are given. The correct functioning of the developed circuit was checked by modeling in the Vivado Design Suite computer-aided design for the implementation of the multiplication device on the development/evaluation kit Artix-7 based on the Spartan 6 field-programmable gate array series by Xilinx. The effectiveness of the proposed hardware pipeline multiplier in modulo is confirmed by the Verilog Testbench timing diagram implemented for the evaluation kit Artix-7 field-programmable gate array. In addition, the developed pipelined modulo multiplier takes no more than 0.02 % of the resources of the used field-programmable gate array for a given length of input data. Compared to the matrix multiplication method, a pipelined modulo multiplier can handle a large data stream without waiting for the result of the previous multiplication step. The modulo pipelined multiplier depth depends on the bit width of the input data. The developed pipeline device can be used in digital computing devices operating in a polynomial system of residue classes, as well as for high-speed data encryption in blocks of cipher processors operating on the basis of a non-positional polynomial number system.
Devising a procedure to determine the level of informational space security in social networks considering interrelations among users
Authors: Akhramovych Volodymyr , Shuklin German , Pepa Yuriy , Muzhanova Tetiana , Zozulia Serhii 
Published: March 2022

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Linear and dynamic models of the system of information security in social networks, taking into consideration the relationships between users, were studied and the resistance of the security system was analyzed.
There is a practical interest in studying dependence of the behavior of the system of social network security on the parameters of users’ interaction. Dynamic systems of information security in social networks in the mathematical sense of this term were considered. A dynamic system refers to any object or process, for which the concept of state as a totality of certain magnitudes at a given time is unambiguously defined and the law that describes a change (evolution) of the initial state over time was assigned.
The network of social interactions consists of a totality of social users and a totality of the relations between them. Individuals, social groups, organizations, cities, countries can act as users. Relations imply not only communication interactions between users but also relations of the exchange of various resources and activities, including conflict relations.
As a result of research, it was found that the security systems of a social network are nonlinear. Theoretical study of the dynamic behavior of an actual object requires the creation of its mathematical model. The procedure for developing a model is to compile mathematical equations based on physical laws. These laws are stated in the language of differential equations.
Phase portraits of the data security system in the MATLAB/Multisim program, which indicate the stability of a security system in the working range of parameters even at the maximum value of the impacts, were determined.
Thus, the influence of users’ interaction parameters on the parameters of the system of social network security was explored. Such study is useful and important in terms of information security in the network, since the parameters of users’ interaction significantly affect, up to 100 %, the security indicator.