bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ensuring the safety of geotechnical objects based on forecasting the parameters of the water regime of rivers using SARIMA models
Authors: Tarakanov D A , Elizaryev A N , Nyrytdinov A A , Elizareva E N , Khasanov I A , Mikhailov S A , Nutfullina E I 
Published: August 2022

Abstract
Every year there are many floods in the world, which have a significant impact on the sustainable social and economic development of the population. At the same time, geotechnical objects located within river catchment basins experience the greatest damage due to floods. To ensure the safety of geotechnical objects, including during high water and flood or low water, it is necessary to predict the extreme values of the parameters of the water regime of rivers. The purpose of this project is to determine the SARIMA model, which makes it possible to most reliably predict the values of the water regime parameters of the Belaya River of the Republic of Bashkortostan. The monthly values of the water flow of the Belaya River in the alignment of the city of Ufa for the period from 1950 to 2018 (828 values) were used as initial data. Based on the comparative analysis of SARIMA models according to the Akaike information criterion (AIC), the SARIMA model (1,0,1) (2,1,0)12 was determined. Also, the forecast values correspond to satisfactory accuracy, which is caused by high fluctuations in the values of the parameters of the water regime during high water or floods. The results of the forecast make it possible to assess the risks for geotechnical objects located within the catchment area of the river, and to scientifically approach the choice of preventive measures.
Effective use of motor oil resources of the tractor of the company “Claas” in the conditions of Uzbekistan
Authors: Ganiboyeva E , Norov B Kh , Suyunov S , Khudaev I 
Published: August 2022

Annotation
The article describes in detail the reliable operation of modern high-performance and complex “CLAAS” techniques, the correct selection of lubricants and compliance with the optimal operating procedure, as well as the results of the analysis of friction elements of motor oils. It is necessary to compare the quality indicators determined on the basis of research and the concentration of friction elements in the oil with standard values. In order to determine the recommended engine oil change intervals in the engines of CLAAS tractors, it is necessary to determine their quality indicators and the concentration of friction elements in the oil. In order to maintain the performance of the oil, it is recommended to add additives during operation. Study of wear conditions of oils used in internal combustion engines. Determination and justification of the limit working life of oils used in internal combustion engines. Study and justification of properties of interchangeable oils used in internal combustion engines. It is necessary to develop scientific justification and recommendations for increasing the service life of the oils used in internal combustion engines.
Finite element analysis of closed-cell aluminum foam approximated with Weaire-Phelan unit cell structure
Authors: File M , Cseke R , Huri D , Balogh G , Mankovits T 
Published: August 2022

Abstract
The finite element modelling of metal foam structures have proven to be a difficult task. Many different modelling approaches exist, both for creating the CAD model and for performing the finite element simulations. This article details the CAD and finite element modelling of an existing aluminum foam. To model the cell structure, the Weaire-Phelan unit cell was used. The different parameters of the unit cell were adjusted to fit the parameters of the existing foam. The physical properties of the finished model were then compared to the original specimen to validate its accuracy. After the comparison, it was determined, that the Weaire-Phelan unit cell can be used to model the physical properties of the structure. The validated and simplified model was then used to perform a finite element analysis under compressive loading. The results were compared to the compression test results of the existing aluminum foam. By comparing the results and calculating the relative errors, it was determined that both the physical and the mechanical properties of metal foam structures can be modelled using this exact method with significant accuracy.
Investigation of aluminium clinched joints by FEA
Authors: Jónás Sz. , Tisza M. , Kovács P. Z. 
Published: August 2022

Abstract
The aim of the present paper is to compare the results of clinch joining simulations of two finite element software. The comparison is taken in between the resultant force-displacement curves, and in between the most important geometrical parameters of the joints, as the undercut (C) and neck thickness (tN). The joining process was performed between two AA6082 sheets in two different heat treatment conditions by a TOX clinching tool. For the simulations the flow curves of material have determined by the so-called Watts-Ford compression test for both conditions. The applied FE software packages were the MSC.Marc&Mentat 2019 and the DEFORM2D 10.2.
Impact of plasma treatment on solderability of printed circuit boards
Authors: Kocsis E. , Lukács A. , Szalai I. 
Published: August 2022

Abstract
Flux is essential in the process of soldering. White flux residues are not only an aesthetic issue, but the inactivated components can cause severe problems. With miniaturization of products in the electronics industry, the short circuits caused by ion migration are more likely to occur during the lifetime of the product. Plasma treatment has been proved to be effective in improving the wettability in case of metal and polymer surfaces. The aim of this study is to investigate the possibility of promoting wettability of pads on printed circuit boards by plasma treatment. PCBs with three different types of surface finishes were investigated before and after plasma treatment. Wettability and solderability were examined by contact angle measurement and wetting balance tester. This method has the potential to reduce the usage of flux during soldering as an alternative surface treatment to create oxide-free metal surfaces.
Analysis of inhomogeneous deformation occurring during post-necking phase of tensile test
Authors: Harangozó D , Kozma I , Czinege I , Szalai Sz 
Published: August 2022

Abstract
The aluminium-magnesium sheets used in vehicle body building are suitable for structural elements and internal panels based on their excellent strength and corrosion resistance. Due to their importance, particular attention should be paid to their strength and formability characteristics, including their behaviour during the tensile test at the stage of diffuse and local necking. With the help of the digital image correlation and 3D imaging techniques, the local deformations can be measured and the following characteristics can be calculated from them, namely the onset of diffuse and local necking, the change in geometry before fracture and the extrapolation of the flow curve from the measured axial stresses and the true cross-sectional area. AlMg3 sheets are used to measure the listed characteristics during tensile test.
Analysis of wear surfaces on parts of revisionally removed implants
Authors: Nemes-Károly I , Kocsis Gy , Szebényi G 
Published: August 2022

Abstract
Nowadays, with increasing average age - and thus an increase in active years - and the heightened pace of life in our cruel, fast-paced world, our bodies are subjected to extreme stress for ever-longer periods. Unfortunately, this lifestyle does not go away without a trace - it can cause damage to everything from our skeletal system to our nervous system, and our joints are no exception - which is why arthroplasty procedures are becoming increasingly popular. Arthroplasty is one of the most successful surgical procedures, which seeks to re-condition, replace - in some cases remove - the joint surfaces to improve the function of the system or at least preserve its current status. The most common form of arthroplasty is the implantation of joint endoprostheses. These devices have a finite lifespan, like all engineering structures, so their replacement at certain intervals, by means of revision surgery, is essential. The prostheses removed in this way carry a wealth of essential information about their design, their manufacturer and even their user and implantor, which can be incorporated into the design of the next generation of systems using reverse engineering, thus moving closer to the development of the "gold standard" implant. The topic of our article is the analysis and exploration of the failure processes of hip, knee, and shoulder implants removed by revision. We will build a model that adequately represents the wear and tear processes of different types of prostheses, with the help of which the wear and tear processes can be determined and predicted, and the strengths and weaknesses of the constructs can be determined. We consider it essential to distinguish between the different types of damage since, without a comprehensive knowledge of their extent, it is impossible to prevent them effectively. Systems grouped according to implant type and implant modality were examined using 3-dimensional imaging. We determined the degradation of the polymer components caused by use, observing to distinguish between damage caused by revision surgery and damage caused by transportation and storage. During our measurements, particular care was taken to identify the exact extent of creep and wear in order to make the best possible recommendations for modifications to existing systems.
Development of drawn polypropylene-based blends and composites
Authors: Varga L J , Bárány T 
Published: August 2022

Abstract
We developed highly oriented polypropylene tapes with solid-state drawing, and studied the effect of additives—two grades of talc, low-density polyethylene (LDPE), and an amorphous poly-alpha-olefin (APAO). The PP compounds were prepared in a co-rotating twin-screw extruder, and sheet films were extruded. The specimens cut out from the sheet films were drawn in a tensile testing machine, and the drawing temperature of 130 °C was maintained by the heating chamber of the tensile testing machine. A draw ratio of λ=10 was set. We investigated the work of drawing and prepared DSC and tensile tests. Both types of talc acted as strong nucleating agents and increased the tensile strength and modulus of the tapes. APAO reduced the crystalline melting enthalpy only to a small extent. Both APAO and LDPE reduced the tensile strength and modulus and increased the strain at break of the tapes.
Automated determination of the optimal manufacturing direction of polymer composite shell structures
Authors: Takacs L. , Szabó F. 
Published: August 2022

Abstract
There is a promising potential in polymer composites in the automotive industry; therefore, design methods aimed at cost and weight efficiency have become increasingly important. The tool cost is a considerable amount of the total cost, which is affected by the direction of the manufacturing planes. In this paper, a method is introduced to automatically determine the optimal manufacturing direction of an arbitrary shell structure. The method is implemented in Python environment. A meshed surface model is read as input, and the geometrical complexity factors are calculated from all directions in the space in a discretized way. A new 3D branch diagram is shown with which the calculated values can be visualized and evaluated. After that, an undercut factor is introduced and calculated, and it is demonstrated that the minimum of the product of these measures can give the optimal manufacturing direction in a fully automatized way. The paper presents a study about a train seat to show the industrial applicability of the method by evaluating the effect of the manufacturing directions and geometrical complexities at different partitioning of the composite shell on material cost.
Investigation of segregation in the runner system during injection moulding
Authors: Fris D. R. , Szabó F. 
Published: August 2022

Abstract
The goal of this study is to investigate segregation in the runner system during injection moulding. Segregation is a phenomenon which occurs during the injection moulding of filled or reinforced polymer systems. The effects of segregation can be so severe that the process can lead to waste products. Even though segregation is an important problem, so far it has been little researched. However, it would be very beneficial if segregation during injection moulding could be predicted through simulation software. In order to achieve that, we must first understand what causes segregation. We injection moulded several specimens using polypropylene, a transparent polymer, and used 10.8 V% ceramic beads as filler with different injection moulding parameters. We investigated the effect of melt temperature and injection rate, which were set to 180, 220, 260 °C and 5, 20, 80 cm3/s. We observed segregation with an optical microscope and used a furnace to burn the PP and measured the weight of the leftover beads in order to determine the bead content in various regions.
Controlled morphological synthesis of temperature-dependent CuO nanostructures and their effect on photocatalytic performance
Authors: Zhou Diwen , Pu Xianjuan , Jiao Zheng , Li Weitao 
Published: August 2022

Abstract
With the development of the times, more and more pollutants such as dyes produced by industry have inevitably caused harm to human health. Dyes are complex and stable in structure, and traditional methods of physically and chemically processing dyes have been proven to be inefficient. The heterogeneous photocatalytic technology has been widely regarded as one of the most promising processes for the treatment of harmful organic wastewater. In this paper, copper oxide (CuO) nanomaterials were synthesized via a hydrothermal method and it was found that the stirring temperature can regulate its morphology and structure, which in turn affects the optical, electrical and catalytic properties of the final product. By controlling the stirring temperature, CuO nanomaterials in the range of ∼30–500 nm were obtained. The as-prepared composites were characterized using x-ray diffraction, transmission electron microscope, scanning electron microscopy, and ultraviolet-visible spectroscopy techniques, among others. After a possible mechanism was proposed according to the above data, the photocatalytic performance of the CuO nanomaterials was evaluated by measuring the decomposition rate of rhodamine B (RhB) solutions. The results indicated that the CuO obtained at 100 °C exhibited excellent photocatalytic activity in comparison to other samples, with around 93% degradation of the RhB solution after 80 min. Finally, the recycling performance of the CuO nanomaterials was also tested and found to be extremely stable, with a high degradation level of 78% maintained after five cycles. In conclusion, the CuO nanomaterials are efficient catalysts for the complete degradation of RhB.
Global dynamical analysis of an electronic spin–orbit coupling system
Authors: Zou Ming , Ma Da-Zhu 
Published: August 2022

Abstract
By means of a canonical generalized momentum and a canonical conjugate spin variable, a complete canonical Hamiltonian formalism is designed to describe a coulomb field with electronic spin–orbit coupling in a semi-classical and non-relativistic way. After this operation, unlike the existing Lagrange formulation, the concepts of hidden momentum, hidden angular momentum and spin kinetic energy are not used in the canonical formalism. Besides, it is easy to find that there are four first integrals involving the conserved total energy and the conserved total angular momentum vector in an 8-dimensional phase space of the system. In this sense, the global dynamics is typically integrable, regular and non-chaotic, and each orbit in the phase space is a quasi-periodic 4-dimensional Kolmogorov-Arnold-Moser(KAM) torus.
Life cycle assessment of expanded polystyrene shipping boxes at a public research institution: insights for infrastructure at the end of life
*
Authors: Lindstrom Timothy , Hicks Andrea L 
Published: August 2022

Abstract
Expanded polystyrene (EPS) is a synthetic plastic used in various industrial and commercial applications. EPS is popular for its unique physical properties, specifically insulating capabilities and low density. These properties become problematic at the end of its useful life as EPS cannot be recycled with other conventional plastics. Though possible, recycling EPS often is practically or economically prohibitive and the material typically is consigned to landfill after a single use. This study investigates the EPS handling system and several disposal alternatives using the methodology of life cycle assessment. The results are applied to evaluate the environmental impacts and economic tradeoffs of a recycling program for EPS shipping boxes at the University of Wisconsin-Madison. The approach in this study pertains to infrastructure sustainability through exploring the challenges and lack of existing infrastructure for managing EPS. The four disposal scenarios under consideration in this study are (1) consignment to a sanitary landfill, (2) a closed-loop reuse arrangement with a biotechnology company, (3) a conventional open-loop recycling arrangement with a specialty recycler, and (4) a novel open-loop recycling arrangement with an on-campus lab. While a closed-loop reuse system for EPS was most environmentally desirable, the study results indicate that conventional recycling of EPS is the only disposal scenario that generates net environmental benefits while also being logistically feasible. Thus, the study results contribute to the body of knowledge related to post-consumer EPS management and can inform decision-making at comparable institutions that generate large quantities of EPS waste.
Principles for Leading, Learning, and Synthesizing in Inter- and Transdisciplinary Research
Authors: Hoffmann Sabine , Weber Christine , Mitchell Cynthia 
Published: August 2022

abstract
Synthesizing heterogeneous findings from different scientific disciplines, thematic fields, and professional sectors is considered to be a critical component of inter- and transdisciplinary research endeavors. However, little is known about the complex interplay between synthesizing heterogeneous findings, leading creative synthesis, and learning about leading and synthesizing. In the present article, we therefore focus on the key interactions between leading and synthesizing, between synthesizing and learning, and between learning and leading in inter- and transdisciplinary contexts and compile a set of 21 principles that guide the interactions between these components. We use these principles to reflect ex post on the benefits and challenges we encountered in developing a nationwide monitoring program for river restoration in Switzerland and draw lessons learned for future inter- and transdisciplinary research endeavors. We conclude that learning and synthesizing do not happen on their own but need to be designed as intentional and purposeful processes.
Development of a Validated UPLC–MS/MS Method for Simultaneous Estimation of Neratinib and Curcumin in Human Plasma: Application to Greenness Assessment and Routine Quantification
Authors: Alabbas Alhumaidi B , Alqahtani Safar M , Panda Sagar Suman , Alrobaian Majed , Altharawi Ali , Almalki Waleed H , Barkat Md Abul , Rub Rehan A , Rahman Mahfoozur , Mir Najib Ullah Shehla Nasar , Beg Sarwar 
Published: August 2022

Abstract
A validated ultraperformance liquid chromatography-tandem mass spectrometry (UPLC–MS/MS) method was developed for the first-ever simultaneous analysis of neratinib, curcumin and internal standard (imatinib) using acetonitrile as the liquid–liquid extraction medium. On a BEH C18 (100 mm × 2.1 mm, 1.7 μm) column, the analytes were separated isocratically using acetonitrile (0.1% formic acid):0.002M ammonium acetate. The flow rate was set at 0.5 mL.min−1. The authors utilized multiple reaction monitoring-based transitions for the precursor-to-product ion with m/z 557.099 → 111.928 for neratinib, m/z 369.231 → 176.969 curcumin and m/z 494.526 → 394.141 for imatinib during the study. Validation of the method as per United States Food and Drug Administration requirements for linearity (5–40 ng mL−1), accuracy and precision, stability, matrix effect, etc. were investigated and were observed to be acceptable. Afterward, we evaluated the method for establishing its greenness profile by using two greenness assessment tools and found it green. Overall, a reliable green UPLC–MS/MS method was devised and used to estimate neratinib and curcumin in human plasma simultaneously.
Ensemble Framework Combining Family Information for Android Malware Detection
Authors: Li Yao , Xiong Zhi , Zhang Tao , Zhang Qinkun , Fan Ming , Xue Lei 
Published: August 2022

Abstract
Each malware application belongs to a specific malware family, and each family has unique characteristics. However, existing Android malware detection schemes do not pay attention to the use of malware family information. If the family information is exploited well, it could improve the accuracy of malware detection. In this paper, we propose a general Ensemble framework combining Family Information for Android Malware Detector, called EFIMDetector. First, eight categories of features are extracted from Android application packages. Then, we define the malware family with a large sample size as a prosperous family and construct a classifier for each prosperous family as a conspicuousness evaluator for the family characteristics. These conspicuousness evaluators are combined with a general classifier (which can be a base or ensemble classifier in itself), called the final classifier, to form a two-layer ensemble framework. For the samples of prosperous families with conspicuous family characteristics, the conspicuousness evaluators directly provide detection results. For other samples (including the samples of prosperous families with nonconspicuous family characteristics and the samples of nonprosperous families), the final classifier is responsible for detection. Seven common base classifiers and three common ensemble classifiers are used to detect malware in the experiment. The results show that the proposed ensemble framework can effectively improve the detection accuracy of these classifiers.
Development of a Health Behavior Screening Tool for Deaf College Students
Authors: Spear Suzanne E , Garrow William , Fleischer Flavia S , Mangat Jaskiran , Risberg Mia 
Published: August 2022

Abstract
Young adults who are Deaf or Hard-of-Hearing (D/HH) face behavioral health risks similar to hearing adults. Despite the emphasis on health behavior screening in health care settings, a brief screening tool in American Sign Language (ASL) does not exist. This manuscript describes the development and pilot testing of an online survey in ASL called the Deaf Health Behavior Report. The Deaf Health Behavior Report includes standardized questions for general health, health behaviors, and psychosocial topics. We invited all D/HH students at a university in Southern California to complete the Deaf Health Behavior Report. A total of 31 D/HH students completed the survey. The most prevalent health risks were related to nutrition, stress, and binge drinking. The Deaf Health Behavior Report is a useful tool for health promotion efforts on college campuses and in general health settings.