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Investigations among family businesses operating in the settlement of the Transdanubia region

Csilla Polster Konczosné Szombathelyi Márta

Publication Name: Civil Szemle

Publication Date: 2021-01-01

Volume: 18

Issue: 2

Page Range: 21-34

Description:

This paper presents the role of family businesses in strengthening social capital. Its aim is to examine the impact of these enterprises on local society and their role in local society. In this paper, after the interpretation of family businesses, social capital, embedding, and local society, the impact of the examined family businesses on local society is presented. The method of this study was in-depth interviews conducted among the owners of 207 family businesses in Transdanubia counties: 128 in villages and small towns, and 79 in medium-sized and large cities were conducted. In the framework of the interviews, therelations of family businesses at the local level, their relations with social organizations, their identity and attachments, and their embeddedness were explored. The main results of the in-depth interviews are that in three of the five indicators examined, in the smaller settlements the embedded family companies have a stronger embeddedness and con-nection with the local society, in one case it is equally high. However, family businesses in larger settlements also have a very significant impact on local society, in terms of trust, reputation, family values, community relations and collaborations, social networking, and local identity

Open Access: Yes

DOI: DOI not available

Serratia fajok jellemzése, valamint Serratia marcescens kvalitatív kimutatása nyers és pasztőrözött tejből polimeráz láncreakción alapuló vizsgálati módszerrel

E. Korcz Z. Kerényi László Varga

Publication Name: Elelmiszervizsgalati Kozlemenyek

Publication Date: 2021-01-01

Volume: 67

Issue: 2

Page Range: 3441-3452

Description:

No description provided

Open Access: Yes

DOI: 10.52091/EVIK-2021/2-4-HUN

Checking the accuracy of siitperf

Gábor Lencse

Publication Name: Infocommunications Journal

Publication Date: 2021-01-01

Volume: 13

Issue: 2

Page Range: 2-9

Description:

Siitperf is the world’s first free software RFC 8219 compliant SIIT (Stateless IP/ICMP Translation, also called as Stateless NAT64) tester, which implements throughput, frame loss rate, latency and packet delay variation tests. In this paper, we show that the reliability of its results mainly depends on the accuracy of the timing of its frame sender algorithm. We also investigate the effect of Ethernet flow control on the measurement results. Siitperf is calibrated by the comparison of its results with that of a commercial network performance tester, when both of them are used for determining the throughput of the IPv4 routing of the Linux kernel.

Open Access: Yes

DOI: 10.36244/ICJ.2021.2.1

Holistic Approach to Smart Factory

Cristina Rosaria Monsone

Publication Name: IFIP Advances in Information and Communication Technology

Publication Date: 2021-01-01

Volume: 614

Issue: Unknown

Page Range: 160-176

Description:

This article presents the key elements of the digitalization of a system, industrial and non, providing a new holistic formulation for Industry 4.0, I4.0, and a concept base of a new API system in the field of Digital Twin for industrial integrated smart solutions based on Internet of Think, IoT, devices. The general approach is also considered for “traditional” industries which come to be I4.0 and as a suitable element for virtual training and decision-making system for industrial e non -industrial customers in a vision of future application in a Virtual reality, VR, environment. In particular, this research defines a formula - CMon - representative of the digitalization of any system and the realization of an API, DTNet, able to create in real- time a Digital Twin, DT, of a single object from a video, realized through any device, using Deep Learning Techniques and then integrate it in a VR environment for a more accurate predictive analysis.

Open Access: Yes

DOI: 10.1007/978-3-030-80847-1_11

Human–robot collision predictor for flexible assembly

Imre Paniti Péter Kovács Dávid Szűr János Nacsa

Publication Name: Acta Imeko

Publication Date: 2021-01-01

Volume: 10

Issue: 3

Page Range: 72-80

Description:

The performance of human–robot collaboration can be improved in some assembly tasks when a robot emulates the effective coordination behaviours observed in human teams. However, this close collaboration could cause collisions, resulting in delays in the initial scheduling. Besides the commonly used acoustic or visual signals, vibrations from a mobile device can be used to communicate the intention of a collaborative robot (cobot). In this paper, the communication time of a virtual reality and depth camera-based system is presented in which vibration signals are used to alert the user of a probable collision with a UR5 cobot. Preliminary tests are carried out on human reaction time and network communication time measurements to achieve an initial picture of the collision predictor system’s performance. Experimental tests are also presented in an assembly task with a three-finger gripper that functions as a flexible assembly device.

Open Access: Yes

DOI: 10.21014/ACTA_IMEKO.V10I3.1072

INTERNATIONAL TRADE LAW AND EMERGING TECHNOLOGIES – A CONCEPTUAL FRAMEWORK /

Balázs Horváthy

Publication Name: Bratislava Law Review

Publication Date: 2020-12-31

Volume: 4

Issue: 2

Page Range: 9-20

Description:

The paper aims to establish a conceptual framework for a relation between technological development and the international trade law. Uncovering the complex interaction between these two areas of the social reality is important today, when we are witnessing an intense period of technological revolution, which transforms not only the trade, but also the whole economy, and at the same time, it also creates challenges to the international trade law. The paper sheds light on the background of these processes and offers an introductory analysis with the aim of mapping the topic and the relevant literature. For this reason, the paper examines the roots of this context, and tries to respond the questions, what are the main challenges this revolution poses to international trade law, and how this area of law can rely upon its infrastructure to respond these challenges.

Open Access: Yes

DOI: 10.46282/blr.2020.4.2.201

Investigation of the effect of formwork shape on packing density of aggregates

Kitti Karolyfi Dániel Harrach F. Papp

Publication Name: Pollack Periodica

Publication Date: 2020-12-31

Volume: 15

Issue: 3

Page Range: 125-134

Description:

Packing density of aggregate influences greatly the properties of concrete. Maximization of packing density increases the flowing ability and segregation resistance of the fresh concrete and the compressive strength of the hardened concrete. The determination of maximum density is difficult experimentally; therefore several models have been developed for that purpose. However, these models do not take the size of the formwork into account. In this study, 20 different formwork shapes were examined with defined aggregate fractions. Results show that increasing the formwork size increases the packing density of aggregate, and the growth depends on the formwork size and compaction method.

Open Access: Yes

DOI: 10.1556/606.2020.15.3.12

Vaporization Dynamics of a Dissipative Quantum Liquid

Ádám Bácsi Balázs Dóra Balázs Dóra Cǎtǎlin Paşcu Moca Gergely Zarand

Publication Name: Physical Review Letters

Publication Date: 2020-12-30

Volume: 125

Issue: 26

Page Range: Unknown

Description:

We investigate the stability of a Luttinger liquid, upon suddenly coupling it to a dissipative environment. Within the Lindblad equation, the environment couples to local currents and heats the quantum liquid up to infinite temperatures. The single particle density matrix reveals the fractionalization of fermionic excitations in the spatial correlations by retaining the initial noninteger power law exponents, accompanied by an exponential decay in time with an interaction dependent rate. The spectrum of the time evolved density matrix is gapped, which collapses gradually as -ln(t). The von Neumann entropy crosses over from the early time -tln(t) behavior to ln(t) growth for late times. The early time dynamics is captured numerically by performing simulations on spinless interacting fermions, using several numerically exact methods. Our results could be tested experimentally in bosonic Luttinger liquids.

Open Access: Yes

DOI: 10.1103/PhysRevLett.125.266803

Intelligent total transportation management system for future smart cities

Daniel Rohacs Anita Boros Dinh Dung Nguyen József Rohács

Publication Name: Applied Sciences Switzerland

Publication Date: 2020-12-02

Volume: 10

Issue: 24

Page Range: 1-31

Description:

Smart mobility and transportation, in general, are significant elements of smart cities, which account for more than 25% of the total energy consumption related to smart cities. Smart transportation has seven essential sections: leisure, private, public, business, freight, product distribution, and special transport. From the management point of view, transportation can be classified as passive or non-cooperating, semi-active or simple cooperating, active or cooperating, contract-based, and priority transportation. This approach can be applied to public transport and even to passengers of public transport. The transportation system can be widely observed, analyzed, and managed using an extensive distribution network of sensors and actuators integrated into an Internet of Things (IoT) system. The paper briefly discusses the benefits that the IoT can offer for smart city transportation management. It deals with the use of a hierarchical approach to total transportation management, namely, defines the concept, methodology, and required sub-model developments, which describes the total system optimization problems; gives the possible system and methodology of the total transportation management; and demonstrates the required sub-model developments by examples of car-following models, formation motion, obstacle avoidances, and the total management system implementation. It also introduces a preliminary evaluation of the proposed concept relative to the existing systems.

Open Access: Yes

DOI: 10.3390/app10248933