bluuebunny/crossref_metadata_2025 huggingface dataset:
geopolítica e o colonialismo aplicado ao arquipélago Malvinas 40 anos após o conflito de 1982
Authors: Do Nascimento Carvalho Rogerio , Coggiola Osvaldo Luis Angel
Published: January 2023

O presente artigo visa estabelecer uma reflexão do aniversário de quarenta anos do conflito das Malvinas (1982) e as repercussões sobre a destinação dos recursos econômicos do arquipélago Malvinas, território ultramar do Reino Unido, localizado no Atlântico Sul. O interesse do Reino Unido na região se verifica pela posição estratégica que projeta poder sobre terra no continente gelado e, ainda, a possibilidade de extração de petróleo, nódulos polimetálicos e gás, além do acesso a cardumes, o que concorre com recentes movimentos de militarização em torno da segurança do arquipélago. A arquitetura colonial imposta pelo Reino Unido através da aplicação de geopolítica singular que impede a integração com a América Latina tem relevância no campo das relações internacionais, visto estar integrada na reconfiguração da ordem mundial.
Geopolítica y orden global
Authors: Legrá Elaine Valton
Published: January 2023

A partir de las tendencias y cambios basados en la rápida globalización de los mercados, la crisis sistémica del capitalismo, el capital transnacionalizado y los efectos de una economía digital sustentada en el valor del conocimiento, la tecnología y la innovación, el trabajo aborda los impactos de la tecnología en la geopolítica del siglo XXI. En la actual coyuntura internacional, la geopolítica debe ser comprendida de forma mucho más abarcadora, que promueve el desarrollo y expansión de grandes empresas transnacionales de gran poder tecnológico, militar, económico, financiero y político, que imponen su supremacía y poder global frente a otros países. Entonces, irrumpe una nueva dimensión de la geopolítica, el poder tecnológico, que será un factor de dominio que redelineará el sistema de relaciones internacionales del siglo XXI. Las nuevas tecnologías están siendo monopolizadas por los centros de poder mundial para alcanzar sus objetivos de hegemonía y dominación global, lo que impacta en la estructura económica y en la política configurando el orden global, lo cual representa un gran desafío para los países en desarrollo, y en particular para América Latina y el Caribe. En ese sentido se esbozan enfoques de políticas públicas que favorezcan alianzas con otros países y regiones para impulsar la cooperación y la integración regional sobre bases justas de desarrollo sostenible y equidad socioeconómica.
Preoperative Prognostic Nutritional Index and Nomogram for Predicting the Risk of Postoperative Complications in Patients With Crohn's Disease
Authors: Zhang Chen , Zhang Tianyu , Shen Ziyun , Zhong Jie , Wang Zhengting
Published: January 2023

INTRODUCTION:

Patients with Crohn's disease (CD) are at a high risk of having postoperative complications. Preoperative prognostic nutritional index (PNI) has been extensively studied for postoperative complications in malignancies but seldom for CD.

METHODS:

Patients who underwent CD-related bowel surgery for the first time in our hospital were retrospectively enrolled from January 2013 to October 2019. Differences in clinical features in low-PNI (≤34) and high-PNI (>34) groups were compared. A prognostic nomogram was then established to explore the risk factors and their assignments of postoperative complications.

RESULTS:

A total of 124 patients who underwent CD-related bowel surgery in our hospital from January 2013 to October 2019 were enrolled. Of these patients, 39 (31.5%) were categorized in the low-PNI group. The serum albumin levels (23.4 ± 4.8 vs 35.8 ± 5.2 g/L, P < 0.001), hemoglobin levels (98.0 ± 24.1 vs 115.8 ± 22.2 g/L, P < 0.001), and white blood cell counts (8.3 ± 5.4 × 109 vs 6.3 ± 3.0 × 109, P = 0.009) of the patients in the low-PNI group were lower than those in the high-PNI group. Postoperative complications were observed in 35 cases of the total cohort, 20 of 39 (51.3%) in the low-PNI group, and 15 of 85 (17.6%) in the high-PNI group (P < 0.001). A prognostic nomogram was built through least absolute shrinkage and selection operator regression. The nomogram revealed a significant difference in the length of postoperative stay between patients with high-risk postoperative complications and those with low-risk postoperative complications (17.07 ± 24.73 vs 10.36 ± 4.51, P = 0.02).

DISCUSSION:

PNI is closely associated with postoperative complications in patients with CD. Its inclusion in a prognostic nomogram provides a convenient mechanism to predict postoperative complications in patients with CD undergoing surgery.
The Effect of Financial and Non-financial Supports on the Productivity of MSEs in Indonesia
Authors: Widodo Cahyo Aji , Mahi Benedictus Raksaka
Published: January 2023

Micro and Small Enterprises (MSEs) contribute significantly to the economy and job creation. The majority of MSEs use simple or traditional technology in the production process. Several common obstacles cause low MSEs productivity, such as low-quality human resources, lack of knowledge, and difficulty in finance access. Various support programs have been implemented to help MSEs increase productivity. This research was conducted to provide empirical evidence of the effect of financial and non-financial support on the labor productivity of MSEs using data at the micro level. By using multiple linear regression for the cross-sectional data, this study concludes that groups of business units receiving financial support, non-financial support, and both forms of support at the same time have productivity of respectively 28.12 percent, 16.04 percent, and 6.36 percent, higher than those receiving no support at all. The results of this study also show that non-financial support has a higher impact on business units with larger sizes and business units with more prolonged operations. Due to their positive effect on productivity, assistance support programs must be extended to more business units. The implication of this research for business is that to provide optimal benefits, support programs should be tailored to the needs of each business unit.
THE INFLUENCE OF THE DIMENSIONAL PARAMETERS OF THE MICROCUTTERS ON THE QUALITY OF PROCESSING OF SMALL PARTS ON CNC TURNING ROD MACHINES
Authors: Maslov A. R. , Smolkin E. M.
Published: January 2023

Based on the study of the parameters of vibroacoustic signals, the size of the microcutters was optimized. The influence of the parameters of microcutters on the roughness of the holes of small-sized parts processed on lathe bar machines has been determined. The dependencies of the roughness parameters of the treated holes on the sortie the cutter insert in the assembly of the boring tool in a wide range of feeds are obtained. A value for ensuring that the requirements of the roughness of the holes of small-sized parts has been determined.
FILTERING OF SIGNALS WITH UNKNOWN INTERFERENCE POWER AND RANDOM JUMPING PERTURBATION
Authors: Bukhalev V. A. , Skrynnikov A. A. , Boldinov V. A.
Published: January 2023

A linear stochastic dynamic system under the influence of random disturbances and interference is considered. The perturbation is a sequence of uncorrelated random variables with a distribution in the range [–1, 1]. This sequence is modeled by a random binary signal with values 1 and 0 and is described by a Markov chain with known probabilities of transitions from one state to another. The modulated signal is fed to the input of the linear control unit. The output signal of the control object is measured with an error, which is a sequence of uncorrelated random variables with an unknown distribution in the range [–1, 1].The problem under consideration differs from the optimal linear filtration problems based on the application of the Kalman filter and its modifications. Its novelty consists in the following: 1) the input signal is a random jumping process – uncorrelated noise modulated by a random binary signal; 2) the variances of random processes – the input signal and the interference characterizing their power are unknown. А posteriori mathematical expectation and the a posteriori variance of the filtering error are determined by the methods of Bayesian estimation and the theory of systems with a random jump structure. The optimal estimation algorithm is described by a system of recurrent equations. It consists of five interconnected blocks: 1) a meter of mathematical expectation and dispersion of an additive mixture of an output signal with interference; 2) an indicator of a random structure; 3) a classifier of a random structure; 4) a dispersiometer; 5) a filter.
IMPROVEMENT OF MATHEMATICAL MODELS OF FIBER-OPTIC LINEAR PATH
Authors: Kuzin P. I. , Boyko A. P. , Oberderfer V. N. , Kuzina E. I. , Bukharin A. V.
Published: January 2023

The article describes the main problem of making a decision about the possibility and effectiveness of the use of fiber-optic communication facilities on communication lines with random parameters. As an example, fiber-optic communication lines of a trusted operator or an adversary are considered. The main reason is indicated, which is the lack of methods that allow predicting the possibility and expediency of using specific fiber-optic communication facilities in given environmental conditions. The necessity of developing and applying a probabilistic mathematical model of a fiber-optic linear path is explained as the basis of the methodology for evaluating the effectiveness of the use of fiber-optic communication means. An analysis of existing mathematical models is given and their shortcomings and imperfections are indicated. A probabilistic mathematical model of the fiber-optic linear path has been developed, which allows calculating the numerical characteristics of the quality indicators of the fiber-optic linear path: Optical Signal-to-Noise-Ratio (OSNR) and Bit Error Ratio (BER), based on the known technical data of the communication means used. The mathematical expectation of a random variable is used as a numerical characteristic, as an idealized average of OSNR and BER. Based on the mathematical expectation, other numerical characteristics are calculated, which are also used when making a decision as a risk measure, and allow us to judge its magnitude and significance. The developed probabilistic mathematical model is proposed as the basis of the efficiency assessment methodology for evaluating the effectiveness of work on communications.
PLANNING OF GROUP ACTIONS OF UNMANNED AERIAL VEHICLES IN A DISTRIBUTED INTELLIGENT CONTROL SYSTEM
Authors: Evdokimenkov V. N. , Hohlov S. V.
Published: January 2023

The actual progress achieved in the field of unmanned flying vehicles makes it possible to use Unmanned Aerial Vehicles (UAVs) to solve various tasks in the civil and defense areas. As a result, UAV groups require scheduling of their actions at various stages of their mission. In their previous publications the authors suggested the architecture of a distributed intellectual control system for the implementation of UAVs collective actions. It was demonstrated, that one of the most important functions of such an intellectual control system is the so called pre-flight scheduling of UAVs actions within a group. The article discusses the approaches to the implementation of algorithms that ensure the pre-flight scheduling of UAVs actions in the frames of a distributed intellectual control system, summarizing the current state of research in this area as well as the authors’ own results. The most important task to be solved at the stage of a UAV group’s actions pre-flight scheduling is to determine the types of UAVs involved in the implementation of the target task. An approximate solution to this problem is proposed, basing on the use of analytical probabilistic models to evaluate the group actions efficiency. The use of such models makes it possible to determine the optimal number of UAVs in the group, to justify the requirements for their survivability, the characteristics of both on-board optoelectronic means and weapons. Algorithms for scheduling the UAV group actions are described, which are based on both mathematical models and formalized criteria for evaluation of the collective actions efficiency. In this case, the planning task, as a rule, can be reduced to the problem of integer linear or nonlinear programming. The possibility of using artificial intelligence technologies for the purposes of the UAV group actions scheduling is discussed. Special attention is paid to the problem of planning the UAV group actions within the framework of a decentralized strategy of flock management.
FPGA-BASED DATA COMMUNICATION SYSTEM IN DIGITAL SIGNAL PROCESSING DEVICES WITH PHASED ANTENNA ARRAYS
Authors: Levin I. I. , Semernikov E. A. , Buriakov D. S.
Published: January 2023

The paper represents some engineering solutions which provide coherence and coherent data transmission in radar and communication systems with phased array with computing components designed on the principles of FPGA-based reconfigurable computer systems. We developed the coherent gathering methods of digitized data from the phased array antenna elements, and data transmission among the distributed components that perform coherent digital signal processing. To provide coherent data processing and transmission, we use the signal of clock reference signal and the CPU-time, centrally generated and transmitted into all nodes with the same delay. Generation of all control signals in the processing nodes are based on these two signals. For data transmission, we suggest to use high-speed optical links, which are the most reliable in environmental conditions. To transmit the digitized data from phased array antenna elements, we suggested using packet data transmission with data integrity control and time-linked digitized data. Also, we applied a mechanism to monitor the delay mismatch of packets transmitted via different links and to synchronize them in data receivers. The most probable emergency situations for the data transmission system are considered and methods of parrying and minimizing the impact of transmission errors on the formation of the result are proposed. The developed engineering solutions were tested on a real FPGA-based beam-forming device with simulation of emergency situations. Many hours of tests and runs showed that all emergency situations were successfully solved by the data communication system.
COMPOSITE GEOMETRICALLY SMOOTH CUBIC HERMITE CURVES IN SPACE AND ON THE PLANE
Authors: Korotkii V. A.
Published: January 2023

The article considers constructive algorithms for creating compound curves using parametric cubic equations. The possibilities of modern computer technology and systems of computer mathematics make it possible to implement algorithms of graph analytics using fractional rational parametric equations of the fifth, seventh and higher orders. The article considers a constructive algorithm for creating a compound cubic curve passing through given points with direction vectors specified in these points. Direction vectors can be used for monitoring the shape of a constructed curve. At the junction points of the cubic curve segments, second order geometric flatness is ensured, due to the equicontinuity of the camber and curvature. The required curve is made sequentially by attaching a new segment to the previous segment. Each segment must comply with the same group of geometric conditions: frequency at boundary points, contact with direction vectors, fixed curvature at one or both boundary points. The article proposes a constructive algorithm for constructing a three-dimensional or flat cubic Hermite segment that satisfies this group of conditions. The problem of constructing a compound geometrically smooth curve boils down to sequential construction of cubic segments using the proposed algorithm. The method proposed in the article for constructing a smooth compound curve allows: to shape a spatial curve with a given curvature at the starting point; to construct a plane curve with given radii of curvature at the nodes (in particular, with zero curvature at the nodal points); insert a cubic segment into a break in a curved line; find a smooth (without a break in a curve) conjugation of curvilinear and rectilinear sections of the constructed line. A distinctive feature of the algorithm is the significant use of reference tools and design capabilities of three-dimensional computer graphics. All necessary actions are performed using a desktop calculator and any software product that supports three-dimensional graphics (Compass-3D, AutoCAD, etc.). Five transparent examples of constructing flat and spatial composite cubic curves of the second order of smoothness are considered.
ALGORITHM AND PROGRAM FOR OPTIMAL PLANNING OF TRAINING OF HEADS OF INTERNAL AFFAIRS BODIES BASED ON A MULTITHREADED MODEL
Authors: Kholostov K. M. , Lemekh R. M.
Published: January 2023

An algorithm for optimizing the process of planning the educational process of training heads of internal affairs bodies is considered, and the implementation of this algorithm in C# in the Microsoft Visual Studio 2019 software environment. The algorithm is based on the use of a multi-threaded network model for optimal balancing of the educational process according to the types of management activities being mastered. The main goal of the algorithm and program development is to increase the effectiveness of the training of managers by observing the uniformity and complexity of the formation of their professionally significant qualities. Balancing the curriculum, in addition to the main goal, allows us to solve the problem of identifying the reserves of study time formed by exceeding the used study time to the actual required costs, by jointly analyzing the use of study time to form (consolidate) professionally significant qualities of a leader across the entire set of academic disciplines (modules) in training programs. Reducing the training time spent on the professional training of managers, which can be achieved by optimizing curricula, allows you to reduce not only the duration of training, but also the material costs associated with the remuneration of teachers and auxiliary training personnel, as well as reduce the wear and tear of the educational material base. When implementing the algorithm, mathematical programming methods are used, as well as a network multithreaded model reflecting the process of formation and consolidation of professionally significant qualities of a manager in the whole set during the implementation of basic educational programs and programs of additional professional training. The results of a computational experiment using the developed program showed two types of collisions that arise during the planning of the educational process and allowed us to draw conclusions about possible ways to overcome them.
CONJUGATION OF CURVED LINES IN THE POINT CALCULUS
Authors: Konopatskiy E. V. , Bezditnyi A. A.
Published: January 2023

The paper implements a general approach to conjugate curves in the point calculus, which includes geometric algorithms for conjugating curves and their analytical description in the form of point equations. This is the mathematical basis for building high-performance computer-aided design systems and providing them with the necessary geometric modeling tools. Geometric algorithms for conjugating planar and spatial curves in general form involving, respectively, two or three free functions continuous and deferential within the parameter variation interval are considered. A point definition of tangents for planar and spatial curves is presented, which consists in differentiating the equation of the original curve by the current parameter followed by a parallel transfer of the resulting segment to the tangent point. Directly conjugation is provided by means of arcs of the first order of smoothness. Several examples of the definition of the arcs of the outline in the point calculus and recommendations on their use for the conjugation of curves are presented. The point equations given in the article and the computational algorithms based on them are valid not only for conjugation of curves, but also for straight lines, proceeding from the fact that a straight line is a special case of a zero-curvature curve that does not require a tangent to be constructed. The prospect of further research is for the conjugation of surface bays, in which two tangents to the original surface bays will form surface bays with cross-sections in the form of arcs of the outline of the chosen shape.
SIMULATION OF HYPERSURFACES BASED ON THE DATABASE OF KINEMATIC PARAMETERS OF THE ANDROID ROBOT MECHANISM
Authors: Pritykin F. N.
Published: January 2023

The paper proposes a method that allows the modernization of the methodology for constructing manipulator movements according to the velocity vector, which makes it possible to exclude the occurrence of deadlocks in the process of computer simulation of movements. The developed algorithm is based on the use of a database characterizing the values of kinematic parameters that set the permissible instantaneous states of the manipulator mechanism at its various positions. A graphical representation of the hypersurface reflecting the relationship of these kinematic parameters from the values of generalized coordinates is performed. Based on this a method for determining kinematic parameters in the synthesis of movements of manipulator mechanisms in organized environments is proposed, which reduces the calculation time of intermediate configurations on a given trajectory of the output link and partially eliminates the occurrence of deadlocks. The results of the computer simulation of the movement of the arm and torso of the android robot on the criterion of minimization of the volume of movement, as well as movement taking into account the position of the forbidden zone with the overcoming of the deadlock situation are presented. The conducted studies can be used in the development of information and control complexes of mobile objects, in particular in the development of intelligent control systems for autonomously functioning robots in organized environments.
NETWORK ANOMALY DETECTION BASED ON WEIGHTED AGGREGATION TAKING INTO ACCOUNT NODAL PARAMETERS
Authors: Sakulin S. A. , Alfimtsev A. N. , Lomanov A. A. , Dobkacz L. Ya. , Nedashkovskii V. M.
Published: January 2023

The bulk move of employees to a remote mode of work, as well as the intensified information confrontation, led to the emergence and aggravation of many problems related to security in corporate networks. Cases of attacks on local area networks, in particular, using phishing and social engineering techniques, distribution of malicious code, and DDoS attacks, have become more frequent. To ensure the security of corporate networks, layered protection systems, including intrusion detection systems, firewalls, antivirus protection tools, various system analyzers etc., are increasingly being used. The use of several types of information protection tools not only reduces the load on individual tools, but also facilitates ability to identify actual attacks on the protected system. This article proposes a hybrid approach to anomaly detection, taking into account the parameters of the end nodes of the network. Enriching with values of these parameters makes it possible to detect low-intensity distributed attacks, thereby increasing the accuracy of the defense system. The transformation of parameters of network end nodes to the format of network session parameters is implemented using regrouping and dimensionality reduction. Ensembles of classifiers which inputs receive the session parameters and the parameters of the network nodes respectively, provide determining anomalies. Ensembles are based on logistic regression, stochastic gradient descent and decision trees. Combining of the classification results is accomplished through the weighted aggregation with anxiety threshold as a weighting factor. An experimental evaluation of the developed approach showed its advantages in comparison with the detection of anomalies without taking into account the parameters of the nodes.
EMPIRICAL EVALUATION OF MACHINE LEARNING METHODS IN ONLINE AUTHENTICATION PROBLEMS
Authors: Ujmin A. G.
Published: January 2023

In the article the concept of empirical evaluation of machine learning in solving problems of online authentication and systems for detecting violations in user behavior, also tested as a part of the WorldSkills championships of corporate champions, is described. The article discusses the methods of differentiated machine learning, including the decision tree classifier, the k-nearest neighbours method, the algorithm of random forests and ultraprecise neural networks. In the work the possibility of online authentication of championship or exam users and the applicability of anomaly recognition technologies with constant confirmation of the user’s identity as part of the work on the example of the “System and Network Administration” competency is considered. The study confirmed the hypothesis that using the considered approaches to distinguish between a legitimate and an illegal user. Based on the data collected, the effectiveness of continuous authentication and anomaly detection was evaluated using different machine learning and difference of convex algorithms.The results of the study allow us to judge the possibility of implementing a solution for continuous online authentication and an anomaly detection system for permanent identity confirmation. After conducting anomaly detection tests in the production environment it is possible to guarantee online authentication anomaly detection within the constant confirmation of the user’s identity close to 100 %.
VERIFICATION OF AUTOMATONS BY MODEL CHECKING METHOD
Authors: Yurtaev A. G. , Stepanov M. F. , Petrov D. Yu. , Fedorov V. A.
Published: January 2023

The article analyzes software verification of control systems based on finite state machines, presents a classification of software correctness checks, advantages and disadvantages of various approaches to software verification, and, as a result, justifies the use of static verification methods, namely the model checking method. To solve applied problems, it is proposed to use the NuSMV software verifier. A brief overview of NuSMV verifier is given. The route of verification of software written in automaton style by the method of model checking is described. Each stage is described in the example of two interacting automata method. The construction of the model is described from a verbal description of its transformation into a finite state machine model with intermediate states and the transformation of the automaton into a formal finite state machine model in the SMV language, which is the input data for the NuSMV verifier. A description of the requirements for the model is presented, ranging from a verbal description of the requirements to the formalization of requirements in language of the temporal logic CTL. Based on the obtained model in SMV language and the obtained formalization of the requirements in CTL temporal logic language, NuSMV verifier checks the feasibility of the obtained requirements on the obtained model of the automata system. An analysis of the results of verification according to the specified requirements is given. For verification, an error was introduced into the model, leading to a negative result of the feasibility of the specified requirements. The verifier indicated the presence of an error and the path leading to it. Based on the results of the analysis of the results, a conclusion is made about the need to use this verification method in tasks of responsible applications. Further steps for the development and implementation of this method are described.
STEGANOGRAPHIC EMBEDDING OF DATA IN HTML DOCUMENT CODE
Authors: Belim S. V. , Munko S. N.
Published: January 2023

A two-key scheme for concealed embedding of data in open source HTML pages is proposed. The first key is used to encrypt the embedded message. The second key is required to encode the hidden message. The body structure of a web page is a tag tree. The embedding algorithm uses class tags. Empty classes do not affect the display of a web page in a browser. Hidden data is encoded by adding new vertices to the tag tree. New vertices are added to the leaf vertices of the page that serves as the container. There are leaf vertices that exclude the addition of empty classes to them. Each tag encodes eight bits of hidden information. The embed key is used to form class names that include new tags. Class names are disguised as the framework used on the web page. Names are generated using a hash function and an embedding key. The message extraction algorithm is based on knowledge of embedding and encryption keys by the receiving subscriber. The algorithm for extracting data boils down to searching for tags by their names and then decoding them. The developed algorithm can be used for transmitting hidden messages on the Internet. The proposed algorithm is open. Resistance is ensured by the secrecy of encryption and embedding keys. Direct enumeration is necessary to hack the system if the tag embedding key is unknown. The algorithm for forming class names does not violate the statistical patterns of the legal class names set. Resistance is provided by the key retention policy. The average throughput of the algorithm is 0,003 bits per byte.
Proveana – Eine Datenbank für die Provenienzforschung am Deutschen Zentrum Kulturgutverluste
Authors: Werner Sabrina
Published: January 2023

The Proveana database for provenance research is a new service of the German Lost Art Foundation in Magdeburg. Complementing the Lost Art database for the documentation of cultural assets which were displaced or relocated as a result of the events of World War II, the centre has released the new database in 2020 to support provenance research through documenting historical information from four different provenance research areas on cultural assets seized due to national socialist persecution (Nazi-looted art), cultural assets displaced during wartime (war booty), cultural assets seized in the Soviet-occupied zone and the GDR, as well as cultural assets and collections from colonial contexts, thereby making it more transparent and contributing to the solution of unresolved cases.
Strukturdatenerfassung in den Zentralen Fachbibliotheken – Nutzerbedürfnisse und Effizienz
Authors: Blortz Ulrich Ch. , Purkert Andreas , Wehrhahn Dawn , Zarnitz Monika
Published: January 2023

Bei der Retrodigitalisierung ist zu klären, welche Tiefe der Strukturdatenerschließung bereitgestellt wird. Die muss sich an den Nutzerbedürfnissen orientieren, aber auch der Ressourceneinsatz ist zu betrachten. Die Zentralen Fachbibliotheken sind für sehr unterschiedliche Fächer zuständig. Ein Blick auf die Unterschiede bei der Strukturdatenerfassung in den einzelnen Häusern stellt dar, wie unterschiedliche Konzepte aussehen können. Eine Umfrage der ZBW zeigt, was deren Zielgruppe unter der Fragestellung, ob Strukturdaten erfasst und dafür weniger Digitalisate erstellt werden sollten oder umgekehrt, als Wunsch geäußert hat.
Extend the context! Measuring explicit and implicit populism on three different textual levels
Authors: Tóth Tamás , Goyanes Manuel , Demeter Márton
Published: January 2023

This paper focuses on a methodological question regarding a content analysis tool in populism studies, namely the explicit and implicit populism approach. The study argues that scholars adopting this approach need to conduct content analysis simultaneously on different coding unit lengths, because the ratio of explicit and implicit messages varies significantly between units such as single sentences and paragraphs. While an explicit populist message consists of at least one articulated dichotomy between the “good” people and the “harmful” others, implicit populism implies that only one of the core features of the populist style is present: either people-centrism or antagonism. Due to the often fractured and occasionally dichotomous nature of populist styles, this research revolves around the idea that the explicit and implicit populist content analysis method should be performed on coding units of different lengths, as these units can yield significantly different results in the detection of populist styles. Hybrid content and statistical analyses were operationalized to scrutinize to what extent explicit, implicit, or non-populist styles change in three coding unit types with diverging lengths. The outcome supports the following suggestion: Explicit and implicit populism demand scrutiny simultaneously on one narrow and one extended textual unit.
A generalization of practical stability of nonlinear impulsive systems
Authors: Ghanmi Boulbaba
Published: January 2023

In this paper, we introduce a new type of stability for nonlinear impulsive systems of differential equations, namely practical h-stability. By using
the Lyapunov stability theory, some sufficient conditions which guarantee practical h-stability are established. Our original results generalize well-known fundamental stability results, practical stability, practical exponential stability and practical asymptotic stability for nonlinear time-varying impulsive systems. Then two classes of nonlinear impulsive systems, namely perturbed and cascaded impulsive systems, are discussed. Furthermore, the problem of practical h-stabilization for certain classes of nonlinear impulsive systems is considered. Finally, two numerical examples are given to show the effectiveness of our theoretical results.
The Addition Theorem for two-step nilpotent torsion groups
Authors: Shlossberg Menachem
Published: January 2023

The Addition Theorem for the algebraic entropy of group endomorphisms of torsion abelian groups was proved in [D. Dikranjan, B. Goldsmith, L. Salce and P. Zanardo, Algebraic entropy for abelian groups, Trans. Amer. Math. Soc.
361 (2009), 7, 3401–3434].
Later, this result was extended to all abelian groups [D. Dikranjan and A. Giordano Bruno, Entropy on abelian groups, Adv. Math.
298 (2016), 612–653] and, recently, to all torsion finitely quasihamiltonian groups [A. Giordano Bruno and F. Salizzoni, Additivity of the algebraic entropy for locally finite groups with permutable finite subgroups, J. Group Theory
23 (2020), 5, 831–846].
In contrast, when it comes to metabelian groups, the additivity of the algebraic entropy fails [A. Giordano Bruno and P. Spiga, Some properties of the growth and of the algebraic entropy of group endomorphisms, J. Group Theory
20 (2017), 4, 763–774].
Continuing the research within the class of locally finite groups, we prove that the Addition Theorem holds for two-step nilpotent torsion groups.
Finite groups with an affine map of large order
Authors: Bors Alexander
Published: January 2023

Let 𝐺 be a group. A functionG→GG\to Gof the formx↦xα⁢gx\mapsto x^{\alpha}gfor a fixed automorphism 𝛼 of 𝐺 and a fixedg∈Gg\in Gis called anaffine map of 𝐺. The affine maps of 𝐺 form a group, called the holomorph of 𝐺. In this paper, we study finite groups 𝐺 with an affine map of large order. More precisely, we show that if 𝐺 admits an affine map of order larger than12⁢|G|\frac{1}{2}\lvert G\rvert, then 𝐺 is solvable of derived length at most 3. We also show that, more generally, for eachρ∈(0,1]\rho\in(0,1], if 𝐺 admits an affine map of order at leastρ⁢|G|\rho\lvert G\rvert, then the largest solvable normal subgroup of 𝐺 has derived length at most4⁢⌊log2⁡(ρ−1)⌋+34\lfloor\log_{2}(\rho^{-1})\rfloor+3.
Natural convection of a viscoelastic Cattaneo–Christov fluid bounded by thick walls with finite thermal conductivity
Authors: Dávalos-Orozco Luis Antonio , Ruiz Díaz Jose Antonio
Published: January 2023

The linear natural convection of a Maxwell viscoelastic fluid with Cattaneo–Christov heat flux constitutive equation, between two thick walls with finite thermal conductivity is investigated. The viscoelastic fluid and the heat flux have different relaxation times. The main interest is on the curves of criticality for different thicknesses ratio D and thermal conductivities ratio X. In the middle range of log X the curves of criticality stabilize depending on the other parameters of the problem. It is revealed that for some Prandtl numbers the curves of criticality remain higher for small X and lower for large X. However, increasing the Prandtl number this behavior is reversed. It is shown that this has important consequences in the order of the criticality curves when the heat flux relaxation time is increased. Depending on the Prandtl number, an increase of this relaxation time may decrease (destabilize) the curves of criticality until a minimum is reached, after which the curves start to increase (stabilize) again. For two different magnitudes of the viscoelastic relaxation time, the critical Rayleigh number, wavenumber and frequency of oscillation are plotted against log X for different magnitudes of D and the heat flux relaxation time.
Spatial resolution of airborne gravity estimates in Kalman filtering
Authors: Jensen Tim Enzlberger
Published: January 2023

Airborne gravimetry is an efficient and reliable method to obtain information on the gravity field, fundamental to gravity field modelling, geoid determination, and flood risk mapping. In evaluation and utilization of gravity estimates, two measures are of fundamental importance, namely the accuracy and spatial resolution. These measures are related to one another through the filtering required to suppress observational noise. As strapdown inertial measurement units (IMUs) are increasingly deployed for airborne gravity surveys, the Kalman filter estimation method is routinely used for gravity determination. Since filtering is not applied directly to the observations in Kalman filtering, it is not straightforward to associate the derived gravity estimates with a measure of spatial resolution. This investigation presents a method for deriving spatial resolution by evaluating the transfer function formed after applying a delta function to the observed accelerations. The method is applied to Kalman-filter-derived gravity estimates from an airborne strapdown IMU system, yielding a full-wavelength spatial resolution of 5.5 km at an accuracy of 0.6 mGal. These results are consistent with a comparison with upward continued terrestrial gravity observations.
Methodology for nonparametric bias reduction in kernel regression estimation
Authors: Slaoui Yousri
Published: January 2023

In this paper, we propose and investigate two new kernel regression estimators based on a bias reduction transformation technique. We study the properties of these estimators and compare them with Nadaraya–Watson’s regression estimator and Slaoui’s (2016) regression estimator. It turns out that, with an adequate choice of the parameters of the two proposed estimators, the rate of convergence of two estimators will be faster than the two classical estimators, and the asymptotic MISE (mean integrated squared error) will be smaller than the two classical estimators. We corroborate these theoretical results through simulations and a real Malaria dataset.
Fabrication of quantum dot and ring arrays by direct laser interference patterning for nanophotonics
Authors: Wang Yun-Ran , Han Im Sik , Hopkinson Mark
Published: January 2023

Epitaxially grown semiconductor quantum dots (QDs) and quantum rings (QRs) have been demonstrated to be excellent sources of single photons and entangled photon pairs enabling applications within quantum photonics. The emerging field of QD-based nanophotonics requires the deterministic integration of single or multiple QD structures into photonic architectures. However, the natural inhomogeneity and spatial randomness of self-assembled QDs limit their potential, and the reliable formation of homogeneous and ordered QDs during epitaxy still presents a challenge. Here, we demonstrate the fabrication of regular arrays of single III–V QDs and QRs using molecular beam epitaxy assisted by in situ direct laser interference patterning. Both droplet epitaxy (DE) GaAs/AlGaAs QDs and QRs and Stranski–Krastanov (SK) InAs/GaAs QDs are presented. The resulting QD structures exhibit high uniformity and good optical quality, in which a record-narrow photoluminescence linewidth of ∼17 meV from patterned GaAs QD arrays is achieved. Such QD and QR arrays fabricated through this novel optical technique constitute a next-generation platform for functional nanophotonic devices and act as useful building blocks for the future quantum revolution.
Research on optimization of crane fault predictive control system based on data mining
Authors: Yanbin Xu , Jianhua Zhang , Wang Xiongwei , Shabaz Mohammad , Ahmad Mohd Wazih , Ray Samrat
Published: January 2023

To ensure the safe functioning of lifting equipment, a data mining-based optimization study of a crane failure predictive control system is provided. To diagnose lifting machinery faults, the system employs decision tree categorization. Using association rules, a correlation study of hoisting machinery defect and failure was performed. When the minimal confidence and support degree are entered, a total of 244 instances of 18 frequent itemset A9 (safety protection device) may be obtained, indicating that lifting machinery does not perform well in this category. A6 (main parts) and A9 appeared a total of 98 times, with support and confidence of 29.4 and 35.6, respectively, indicating that the main parts can detect that the safety protection device is also having problems. A7 (electrical control system) and A9 appeared a total of 67 times, with support and confidence of 20.1 and 27.3, respectively, indicating that the electrical control system can detect that the safety protection device is also having problems; the correlation between them was also quite large. The system’s feasibility and efficacy shows that it has some application value.
The Time of the Last Hunters: Chronocultural Aspects of Early Holocene Societies in the Western Mediterranean
Authors: Perrin Thomas
Published: January 2023

In the Western Mediterranean Basin, the last hunter-gatherer societies fall within a chronological range between the 9th and 5th millennia cal. BCE, that is, between the cold oscillation of the Younger Dryas and the Holocene climatic optimum, before disappearing under the expansion of the first Neolithic societies. The variability in cultural expressions is very high, as shown by the variability in the lithic industries, a technical field which, from a historiographical point of view, is the preferred approach of archaeologists to address these issues. However, convergences in technical choices or typological features show the existence of major currents of diffusion and exchange between many of these Mesolithic groups. But the discussion of these cultural dynamics requires knowing precisely the absolute chronology of these groups and the detailed characteristics of their material productions. The aim of this article is so to re-examine the chronocultural organization of the Mesolithic of the Western Mediterranean, especially the first part of it, roughly from the middle of the 10th millennium cal. BCE to the middle of the 6th, on the basis of a critical revision of the absolute dates.
Párhuzamok jogi kultúránk zsidó-keresztény és római jogi gyökerei között
Authors: Herger Csabáné
Published: January 2023

On 3 June 2022, the Faculty of Law of the University of Pécs hosted an interdisciplinary conference, where linguists, ancient historians, Roman jurists, rabbinical jurists, canon lawyers, legal philosophers and legal historians discussed the question, the influence of the Old and New Testament legal orders on the European legal culture, and the extent to which there is a parallel between the biblical and Roman legal roots of our legal culture. This volume contains 15 papers whose authors have contributed to this multifaceted discussion of this vast subject in the framework of the research project ’The Legal Relevance of the Vetus et Novum Testamentum. Parallels between the Jewish-Christian and Roman Law Roots of our Legal Culture’ of the Dezső Márkus Research Group for Comparative Legal History. In this introductory paper, the research questions and methodology are presented by the project leader.
„Hoc quidem iuris est” (Coll. 5.2.1.)
Authors: Grüll Tibor
Published: January 2023

The Collatio Legum Mosaicarum et Romanarum, or “Collation of the Laws of Moses and the Romans”, is one of the most perplexing works of late antiquity: a law book compiled in the fourth or fifth century – the date of the work is still a matter of controversy – by an anonymous editor who wanted to show the similarity between laws of Moses and the Roman laws. Citing first laws from the Pentateuchus – especially from the books of Exodus, Leviticus, and Deuteronomy which he believed were written by Moses – the anonymous Collator then compared corresponding passages from Roman jurists and from Roman laws to form discussions on sixteen topics such as homicide, adultery, homosexuality, incest, and cruelty towards slaves. While earlier scholars wrestled with dating the Collatio, the religious identity of the Collator, and the purpose of the work, this paper suggests that the Collator may have been a Jew writing in Rome in an attempt to draw pagan lawyers to seeing the connections between the highly esteemed and very ancient laws of Moses, the famous legislator of the Jews whom he called as a priest, and the laws of classical Roman jurists, such as Paulus, Ulpianus, Modestinus, and Papinianus.
„A derék asszony dicsérete"
Authors: Hack Márta
Published: January 2023

As part of the Old Testament and ancient Hebrew wisdom literature, the Proverbs of Solomon describes an ideal for women. In the Old Testament, the image of women is not pejorative, even though from the Fall of mankind, a woman is under the authority of a man. The status of girls and married women in a patriarchal family had somewhat changed for the better under the Law of Moses; although divorce and polygamy were legal, monogamous marriage received indirect protection. The Law also protected women and widows in cases of defamation and, in matters of inheritance as well. This study closes with the analysis of the poetic work of Proverbs 31:10-31, describing an outstanding woman, who is a faithful wife, wise teacher of her children, diligent housekeeper and a talented businesswoman. Her noble character serves as an example and shapes the ideals of women through the ages.
Néhány katolikus szemléletű megfontolás az ószövetségi ‘berit’ sajátos relacionális jellegéről
Authors: Frivaldszky János
Published: January 2023

In Deuteronomy, this form of 'covenant' appears as dominant: "you shall be my people". This formula therefore establishes that Israel is God's people. It is a gift by which the Lord has chosen Israel from among many peoples. Thus the chosen people become God's property (segullah), an inheritance. The formal act of the covenant is given meaning and significance insofar as it establishes the life of the covenant relationship and provides its framework, but the emphasis here is on the covenant relationship itself, its inner life.
A jogállamiság fogalmának eszmetörténeti vázlata
Authors: Tóth J. Zoltán
Published: January 2023

The present paper aims to briefly review the history of the concept of the rule of law. It gives an account of its three pillars, namely the English rule of law, the French constitutionalism and the German Rechtsstaat, their historically changing meanings and the evolution of the principles they protect. It highlights the political changes in the use of these concepts after the World War II, in an attempt to prevent the Nazi atrocities from recurring, and shows how the rule of law, the Rechtsstaat and the prééminence du droit have been given substance at the end of the 20th and beginning of the 21st century.