bluuebunny/crossref_metadata_2025_split huggingface dataset:
On monotone likelihood ratio of stationary probabilities in bonus-malus systems
Authors: Ágoston Kolos Csaba , Gyetvai Márton 
Published: November 2022

Abstract
Bonus-malus system is an often used risk management tool in the insurance industry, and it is usually modeled with Markov chains. Under mild conditions it can be stated that the bonus-malus system converges to a unique stationary distribution in the long run. The maximum likelihood ratio property is a well-known statistical concept and we define it for the stationary distribution of a bonus-malus system. For two special cases we could justify it algebraically. For other cases we describe a numerical method with which we can test this property in any case. With the help of the described method, we checked this property for cases that appear in actuarial practice.
Computability of sets in Euclidean space
Authors: Potgieter Petrus H 
Published: November 2022

Abstract
We consider several concepts of computability (recursiveness) for sets in Euclidean space. A list of four ideal properties for such sets is proposed and it is shown in a very elementary way that no notion can satisfy all four desiderata. Most notions introduced here are essentially based on separability of ℝ
n
and this is natural when thinking about operations on an actual digital computer where, in fact, rational numbers are the basis of everything. We enumerate some properties of some naïve but practical notions of recursive sets and contrast these with others, including the widely used and accepted notion of computable set developed by Weihrauch, Brattka and others which is based on the “Polish school” notion of a computable real function. We also offer a conjecture about the Mandelbrot set.
Solution of the real and complex eigenvalue problems in the ABS class
Authors: Abaffy József 
Published: November 2022

Abstract
The class of ABS methods was originally developed for solving systems of linear equations in a finite number of iterations. Later it was shown that methods for solving nonlinear systems of equations, linear programming algorithms, quadratic programming, etc. are also members of the ABS class. In this paper, we show that QR factorization can also be derived from three ABS subclasses, which is an essential step in methods solving eigenvalue problems. Another possibility to use the ABS class in the eigenvalue problems is to transform a matrix to Hessenberg form which is an important initial step when solving eigenvalue problems by QR-type methods. Here we study versions of the plain QR-method which are based on the QR factorization computed by the ABS methods and compare them with the MATLAB eig () function. We also compare the ABS Hessenberg method to the MATLAB hess() function. The preliminary results show the competitiveness of 3 ABS eigenvalue solving methods with the MATLAB eig () function.
Production-inventory strategies for a linear reverse logistics system
Authors: Dobos Imre 
Published: November 2022

Abstract
The paper investigates an one-product reverse logistics system. The aim is to analyze the functioning of such a system with continuous time and linear cost structure. The costs consist of linear holding costs for both warehouse, and the linear remanufacturing, manufacturing, and disposal costs. The demand and return rates are known deterministic parameters. The problem is solved with the Pontyagin’s maximum principle. Solving the control problem, it is corrected an earlier paper [1].
Applying Cocoso, Mabac, Mairca, Eamr, Topsis and Weight Determination Methods for Multi-Criteria Decision Making in Hole Turning Process
Authors: Do Duc Trung , Nguyen Nhu-Tung 
Published: November 2022

Abstract
The ranking of solutions to determine the best one among many solutions is always the setting goal for all activities of all fields in general and in the turning process in particular. When a solution is evaluated by multiple criteria, this is known as “Multi-Criteria Decision Making - MCDM”. Many MCDM methods were proposed by scientists, however, the ranked results of the solutions are not the same. In addition, the ranked results of the solutions also depend on the weighting methods of the criteria. In this study, the ranking of the solutions in the hole turning process was performed by different MCDM methods and with different weighting methods. Five MCDM methods were mentioned in this study including COCOSO, MABAC, MAIRCA, EAMR, and TOPSIS. In this study, five weighting methods were also used including MEREC weight, EQUAl weight, ROC weight, RS weight, and FUCOM weight. The combination of MCDM and weighting methods creates twenty-five ranking results of the solutions. It is interesting to note that all twenty-five ranking results determine the same best solution. The stability in ranking the solutions by MCDM methods was also discussed in this study. From the obtained results, several recommendations were drawn. Some issues that have not been solved in this study and need to be done in near future are also mentioned in the last section of this study.
A Review on Hybrid Electrical Vehicles
Authors: Talari Krishnaiah , Jatrothu Venkatesu Naik 
Published: November 2022

Abstract
Conservation of energy and reduction in emissions emerge as significantly cautious for automobiles because of severe current emissions and energy situation. Many of experts have opinion that, majority of cars fitted with internal combustion engines are the major contributors of unhealthy emissions to the atmosphere which causes global warming and increase air quality index in urban areas. Internal combustion engines are accountable for the major pollution issues. As the energy calamity and atmospheric pollution are becoming remarkable in day to day life, hybrid electric vehicles (HEV’s) necessity for the world is in accelerated pace.
Determination of Measurement Parameters for Vibration Analysis by Bus
Authors: Szalai Péter , Hajdu Flóra , Horváth Péter , Papp Csenge , Apagyi Antal , Brinissat Marame , Kuti Rajmund 
Published: November 2022

Abstract
From the point of view of field examinations, especially in the case of measurements done by instruments, it is crucially important to determine measurement conditions. Accurate identification of parameters enables accurate and certified measurement results to be achieved. In our work, we represent the determination of measurement conditions for harmful vibrations occurring during urban road transport of an Ikarus 55 type long-haul bus. This is a favourable basis for further vibration analysis regarding other buses.
Effect of Heat Treatment in Oxygen-Containing Medium on Fatigue Life of Zirconium Alloy
Authors: Trush Vasyl , Maruschak Pavlo , Student Mykhailo , Lavrys Serhii , Luk’yanenko Aleksandr 
Published: November 2022

Abstract
The effect of heat treatment in oxygen-containing medium on fatigue properties of zirconium alloy samples was shown. This gas treatment improved fatigue life in pure bending and cyclic tensile testing. An increase in fatigue life was explained by the formation of a hardened near-surface layer. According to the data of fractographic studies of destroyed samples, it was found that treatment in an oxygen-containing medium contributes to the formation of a structure with a higher energy intensity of destruction.
A Novel Semi-Analytical Approach to the Assessment of the Equivalent Stiffness of a Beam
Authors: Zámečníková Tereza , Mareš Tomáš , Kulíšek Viktor , Padovec Zdeněk , Malá Anna , Kropík Bohumil 
Published: November 2022

Abstract
This paper introduces several new approaches to stiffness calculation of the composite beam with a circular cross-section. The paper poses the problem of calculating the stiffness of the fibre-reinforced winded beam and introduces a new way of stiffness calculation. The novel semi-analytical calculation represents an approach that is less time consuming than conventional calculation methods or FEA methods. The expected application of the new method of calculation is in preliminary design and design calculations.
Exploring the Position of Modern Technologies in Activating the Remote Audit Approach in Light of the Corona Pandemic - a Big 4 Case Study –
Authors: Tebergaoui Nabila Nehla , Djaouahdou Reda , Benhaoues Karima , Tăbîrcă Alina Iuliana 
Published: November 2022

Abstract
The extraordinary events of the COVID-19 pandemic have led Big 4 Audit Firms, like many other global companies, to a place where everything is different. Overnight, all practitioners worldwide have been forced to work in an entirely new environment that requires them to scramble for survival. However, the same destructive forces and the challenges of maintaining business continuity, as well as the widespread working home methods and providing remote services, have offered enormous opportunities and potentials for audit firms [in particular, Big 4 audit firms] to develop their digital innovations and increase reliance on modern technologies. Therefore, the main objective of our research lies in exploring the position of modern technologies (particularly in Big 4 audit firms) in activating the remote auditing approach considering the COVID-19 pandemic. So, in achieving the objectives of the research, we relied on the documentary descriptive approach, through which we reached several results, most notably that Modern technologies have contributed to drawing the line between what is possible in the external audit profession and what can only be imagined, by expanding the circle of possibilities and enabling auditors to practice their jobs anywhere, anytime and in real-time with the auditee, which translates into activating the remote auditing approach.
Leadership Influence on Work Satisfaction Level in COVID-19 times in Romanian SMES
Authors: Sanda Cristina Maria , Stegăroiu Ion , Sanda Grigorie 
Published: November 2022

Abstract
Choosing the right leadership style is a constant concern in business management because it can directly influence its financial results. Through this paper, we wanted to check to what extent the leadership style can influence the level of satisfaction of the employee, his desire to change jobs, and to what extent it accentuates or improves the effects generated by the COVID-19 pandemic (anxiety, work from home, the economic crisis generated]. We also wanted to check to what extent a high degree of job satisfaction can negatively influence the employee’s desire to look for a new job. In the empirical research, we used the MLQ questionnaire to determine the management style, and we used the Likert scale for other variables.
The Management of the Corruption Phenomenon and its Approaches
Authors: Ghibanu Ionuț Adrian , Ștefan Maria Cristina , Andreiana Violeta Andreea , Stoica Georgiana 
Published: November 2022

Abstract
Corruption is one of the plagues of the modern world that is characteristic especially of the economic, administrative, and political areas. The history of civilization shows us that this phenomenon has existed in the world since the beginning. Still, depending on the era and the measures taken against it, it was more or less developed. From an economic perspective, it is considered to be particularly harmful because it constitutes an obstacle to the healthy, prosperous, and fair development of a nation. In our era, the phenomenon of globalization has acquired very strong valences, unfortunately, and corruption has acquired an impressive development, ripping the fruits of global deepening, especially now that we are also talking about corruption manifested across borders when it affects or is promoted by multinational companies. Of course, the phenomenon of corruption cannot be completely eradicated and there is no country in the world that can boast of such a performance, but firm measures are needed to limit and stop it.
Romania has been dealing with this phenomenon for a long time, and the legislative measures, the political will and the pressures of the European institutions should aim, in the medium term, to reduce it. The present article evokes the terminological aspects of the phenomenon of corruption, analyzing its causes and possible solutions, but also a perspective of mathematical modeling of its progression.
The study’s novelty is given by the deepening of the corruption phenomenon in light of the opportunities offered by the new paradigm of the globalization phenomenon.
Analisis Aspek Teknis Dan Finansial Alat Tangkap Rawai Di Pelabuhan Pulau Baai Kota Bengkulu
Authors: Ginting Pilihenta , Zamdial Zamdial , Muqsit Ali 
Published: November 2022

ABSTRAKPenelitian ini bertujuan untuk menghitung dan menganalisis kelayakan usaha penangkapan ikan yang menggunakan Pancing Rawai di Kampung Nelayan Sejahtera Kota Bengkulu. Penelitian ini diharapkan dapat menjadi acuan dan penambahan informasi bagi pihak pihak yang berkepentingan yang mengembangkan usaha penangkapan ikan dengan menggunakan Pancing Rawai di Kampung Nelayan Sejahtera Kota Bengkulu. Penelitian ini berlangsung selama 1 bulan terhitung sejak bulan Juli sampai Agustus 2021.Metode penelitian ini menggunakan metode observasi dan wawancara. Dari analisis aspek teknis yang dilakukan pada 10 responden diperoleh hasil wawancara bahwa ukuran kapal Pancing Rawai adalah 4,05 GT, ukuran Mata pancing mengunakan nomor 7, mesin kapal yang digunakan Yanmar 26 PK, daerah penangkapan ikan 17-20 mil dari Kota Bengkulu. Jenis ikan hasil tangkapan yaitu ikan Kerapu (Epinephelus sp), ikan Kakap Merah (Lutjanus malabaricus), ikan Jenihin (Lutjanus analis) dan ikan Manyung (Arius thalassinus). Operasi penangkapan ikan ada tiga proses yaitu persiapan, penurunan dan penarikan, proses penanganan ikan yang dilakukan biasanya dilakukan oleh nelayan Pancing Rawai Kota Bengkulu, pemasaran hasil tangkapan yang digunakan oleh nelayan di Kampung Nelayan Sejahtera Kota Bengkulu dilakukan secara langsung oleh pedagang pengepul dan bakul motor. Dari hasil penelitian analissi aspek ekonomi didapatkan nilai kriteria invenstasi alat tangkap Pancing Rawai di Kampung Nelayan Sejahtera didapat hasil nilai Net B/C Ratio = 1,00, NPV = Rp 37.611.00, IRR = 70% dan PP = 4,16 tahun (4 tahun 1 bulan 6 hari) menggunakan diskon factor 7%. Hasil analisis aspek teknis dan finansial alat tangkap Pancing Rawai Kampung Nelayan Sejahtera Kota Bengkulu dinyatakan layak.
Analisis Kualitas Air Di Pelabuhan Perikanan Samudera (PPS) Kutaraja Yang Berwawasan Lingkungan
Authors: Handayani Putri , Rizwan Rizwan , Kandi Oni 
Published: November 2022

Kualitas air dipengaruhi oleh tingginya aktivitas yang terjadi dikawasan pelabuhan perikanan dapat mengakibatkan pencemaran suatu lingkungan yang ditandai dengan penurunan kualitas air. Pencemaran air disebabkan oleh masuknya atau dimasukkannya mahkluk hidup, zat, energi, dan komponen lain ke dalam air oleh kegiatan manusia, sehingga kualitas air menurun sampai tingkat tertentu yang menyebabkan air tidak dapat berfungsi sesuai dengan peruntukannya. Tingkat pencemaran perairan Pelabuhan Perikanan dapat dilihat dari parameter fisika dan kimia yang meliputi, suhu, salinitas, pH (derajat keasaman) dan oksigen terlarut (DO). Tujuan dari penelitian ini adalah untuk mengetahui kualitas air di kolam Pelabuhan Perikanan Samudera (PPS) Kutaraja untuk mewujudkan Pelabuhan Perikanan yang berwawasan lingkungan. Penelitian ini dilaksanakan pada bulan Februari 2021. Metode yang digunakan dalam penelitian ini adalah metode deskriptif kuantitatif. Metode deskriptif kuantitatif adalah mendeskripsikan atau menjelaskan peristiwa atau kejadian yang terjadi pada saat sekarang dalam bentuk angka-angka yang bermakna. Berdasarkan hasil penelitian dengan metode indeks pencemaran, kondisi perairan di Pelabuhan Perikanan Samudera Kutaraja termasuk ke dalam kategori 1,0Pij5,0 yang berarti perairan Pelabuhan Perikanan dalam kategori tercemar ringan, dimana kriteria indeks pencemaran perairan mengacu berdasarkan Keputusan Menteri Negara Lingkungan Hidup Nomor 115 Tahun 2003 tentang penetapan status mutu air. Kondisi lingkungan Pelabuhan Perikanan Samudera (PPS) Kutaraja kurang stabil sehingga Pelabuhan Perikanan Samudera (PPS) Kutarja belum memenuhi syarat sebagai Pelabuhan Perikanan yang berwawasan lingkungan dikaji dari kualitas air
Vendian of the Middle Urals: A review of some investigations in the beginning of the 21st century
Authors: Maslov A. V. 
Published: November 2022

Research subject. The research objects included a book section on the Vendian stratigraphy of the Yazvinsko-Kosva sub-zone of the Kvarkush-Kamenogorsk meganticlinorium, written for the Explanatory note to sheet O-40 – Perm of the State Geological Map 1000/3 of the Russian Federation, as well as the results obtained in the course of various thematic (stratigraphic, paleontological, litho- and isotope-geochemical, etc.) studies of the Vendian sedimentary sequences of the indicated territory.Materials and methods. The materials were facts, ideas and arguments in favor of certain conclusions and ideas of various authors. were analyzed. The methods included the comparison and analysis of facts, conclusions and ideas of predecessors.Results. It is suggested that the ideas about the architecture of the Vendian deposits of the western slope of the Middle Urals, dating back to the pioneering works of B.D. Ablizin and his colleagues, had almost reached perfection. At the same tim, the attribution of diﬀerent formations to the regional stages of the Vendian of the East European Platform is still interpreted diﬀerently. Studies into the Vendian macrofauna on the western slope of the Middle Urals have also made signiﬁcant progress in the ﬁrst two decades of the 21st century, which, however, cannot be said about the studies of microfauna. The dating of detrital zircons from tillite-like conglomerates and sandstones of the Serebryanka and Sylvitsa groups should undoubtedly be continued. For the Vendian of the western slope of the Middle Urals, the dating of zircons from volcanic tuﬀs/ashes, as well as the search for correlations of already dated various igneous bodies with sedimentary sequences, is still relevant. This search is complicated by mountain taiga conditions. The prospects for studying the chemical composition of heavy fraction minerals, and reconstructing the composition and evolution of clastic sources for sedimentary sequences of the Serebryanka and Sylvitsa groups, seem almost boundless.Conclusions. The conducted analysis of works published in the ﬁrst years of the 21st century on various aspects of the geo logy of the Vendian sedimentary sequences of the Middle Urals made it possible to identify their strengths and weaknesses and to outline directions for further research.
Au-Pd mineralization and ore-forming ﬂuids of the Bleïda Far West deposit (Anti-Atlas, Morocco)
Authors: Kalinin Yu. A. , Borovikov A. A. , Maacha L. , Zuhair M. , Palyanova G. A. , Zhitova L. M. 
Published: November 2022

Research subject. Au-Pd mineralization of the Bleïda Far West deposit, represented by an unusual association of palladium gold, minerals of the Pd-Bi-Se system, as well as silvery gold and minerals of the Pd-Bi-Te system. The deposit is localized in the Neoproterozoic volcanic rocks of the central Anti-Atlas (Morocco).Methods. A chemical analysis of minerals was carried out at the Center for Collective Use of Multielement and Isotopic Studies of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk, Russia) using the electron probe microanalysis (EPMA) method. Fluid inclusions were studied using cryometry and homogenization using a THMSG-600 microthermochamber. The composition of the gas phase and the determination of the solid phases of the inclusions were carried out by Raman spectroscopy. The qualitative chemical composition of ﬂuid inclusion salts was determined by the EPMA method.Results and conclusions. It is suggested that palladium gold and minerals of the Pd-Bi-Se system were formed under the conditions close to those during the formation of Au-Pd inﬁltration deposits in Brazil, while silvery gold and minerals of the Pd-Bi-Te system could be formed under the conditions similar, but not identical, to the formation conditions of Au-Pd low-temperature mineralization in porphyry deposits. According to the study of ﬂuid inclusions in quartz and calcite, Au-Pd mineralization was formed at temperatures from 384 to 75°C with the participation of homogeneous or heterophasic CaCl2-NaCl highly saline hydrothermal solutions at a depth of 2.8–2.7 km. Minerals of the Pd-Bi-Se system, previously unknown in Bleïda Far West ores, were found in association with native gold: osterboshite (Pd, Cu)7Se5, paladsite (Pd17Se15), (Au,Ag)Se, padmaite PdBiSe, native Se, as well as a number of unidentiﬁed phases – Pd2BiSe, Pd3BiSe, Pd4BiSe and Pd5BiSe.
Paleosols in the Kashira deposits in the south of the East European Craton (Republic of Bashkortostan): characteristics, paleoecological and stratigraphic signiﬁcance
Authors: Mirnov R. V. , Alekseeva T. V. 
Published: November 2022

Research subject. Paleosols discovered in the Kashira sequence of the Pennsylvanian in the southeastern part of the East European platform. Aim. To study the structure and composition of the paleosols.Materials and methods. Core material from wells was studied by X-ray analysis, scanning electron microscopy and a detailed description of the core and thin sections.Results. Four types of paleosols were identiﬁed, three of which are developed on a dolomite substrate. The dolomites are characterized by the following features: microcrystalline structure with a crystal size of 5–10 microns; predominantly euhedral form of crystals, high intercrystalline porosity (up to 38%), inclusions of in situ halite, gypsum and anhydrite, ubiquitous ﬁlaments of sepiolite. In paleosols based on a limestone substrate, beta-calcretes with Microcodium were found. The study of fossil roots (rhizoliths) revealed the correlation between their types and substrate composition. Thus, petriﬁed rhizoliths and root casts ﬁlled with sedimentary rock and developed clay cutans were found on a dolomite substrate, while calcite tubules around root channels were developed on a limestone substrate. The latter show the presence of abundant Microcodium formations.Conclusions. The revealed morphological and compositional features of the paleosols under study, such as the presence of in situ halite and sulfates (anhydrite and gypsum), sepiolite, and beta calcretes, point to the semiarid climate during the Kashira age on the area under study.
ANALISIS MINAT BELAJAR SISWA KELAS X PROGRAM LINTAS MINAT PADA MATA PELAJARAN BIOLOGI DENGAN MENGGUNAKAN GOOGLE MEET
Authors: Salsabila Aulia Maghfirotul , Rusyana Adun , Sopyan Taupik 
Published: November 2022

Selama pandemi Covid-19 pembelajaran yang berlangsung, baik guru dan siswa sama-sama belajar beradaptasi dengan cara pembelajaran daring. Akan tetapi tidak sedikit siswa yang mengalami kejenuhan, akibatnya minat belajar siswa menurun dan tidak mengikuti pembelajaran dengan baik. Guru berinovasi dalam model pembelajaran selama daring dengan menggunakan media e-learning yaitu google meet. Tujuan penelitian ini adalah mengetahui pengaruh minat belajar siswa kelas x program lintas minat pada mata pelajaran biologi dengan menggunakan google meet. Waktu penelitian minggu keempat bulan Mei 2022. Populasi penelitian ini adalah kelas X IPS di SMA N 1 Singaparna. Sampel yang digunakan kelas X IPS 4 sebanyak 31 orang. Teknik pengambilan sampel menggunakan teknik purposive sampling. Penelitian ini menggunakan metode deskriptif kuantitatif. Instrumen yang digunakan angket dan wawancara. Data yang diperoleh dengan angket dideskripsikan, sedangkan hasil wawancara untuk mendukung data kuantitatif setelah dideskripsikan. Hasil penelitian menunjukan 67,16% tergolong kriteria yang tinggi. Sehingga terdapat pengaruh pada minat belajar siswa kelas x program lintas minat pada mata pelajaran biologi dengan menggunakan google meet. Kata Kunci: E-Learning, Minat Belajar