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Publications - 6289

The multidimensional effects of host country sustainable development on China’s outward foreign direct investment: evidence from Belt and Road countries

Gengcan Zhu Irum Shahzadi Zijie Wang Bin Gong Chenrui Zhu

Publication Name: International Journal of Low Carbon Technologies

Publication Date: 2025-01-01

Volume: 20

Issue: Unknown

Page Range: 2103-2116

Description:

This paper explores the effect of sustainable development levels in countries participating in the Belt and Road Initiative (BRI) on China’s Outward Foreign Direct Investment (OFDI). Through a systematic empirical analysis at both national and enterprise levels, the study examines how the sustainability of BRI countries influences China’s investment decisions. At the national level, the analysis reveals that higher levels of sustainable development in BRI countries positively impact China’s OFDI, with this relationship exhibiting a nonlinear pattern: low and high levels of sustainable development inhibit and promote OFDI, respectively. Additionally, natural resource availability plays a significant role in generating spatial spillover effects. Further examination at the enterprise level shows that the positive relationship between sustainable development and OFDI was particularly evident from 2013 to 2019; however, the onset of the COVID-19 pandemic in 2020 disrupted this trend. The heterogeneity analysis shows that state-owned enterprises tend to invest in countries with higher sustainable development levels, while industries like power, heat production, and wholesale retail are less sensitive to these levels. Additionally, host country participation in the Belt and Road Summit increases enterprises’ tolerance for variations in sustainable development, while leverage ratio and asset liquidity further influence OFDI. This study provides theoretical insights into the selection of BRI countries for OFDI and offers policy recommendations for enhancing the sustainability and risk management of China’s foreign investments.

Open Access: Yes

DOI: 10.1093/ijlct/ctaf140

Analysis and design of electrical circuits by ANA method

Miklós Kuczmann Éva Katona

Publication Name: Przeglad Elektrotechniczny

Publication Date: 2009-12-01

Volume: 85

Issue: 12

Page Range: 69-72

Description:

The paper presents a software, which includes the functions available in the other networks and systems, but it gives a user friendly interface. The program, called ANA (Advanced Network Analysis) is to give an easy use for students, engineers and researchers as well.

Open Access: Yes

DOI: DOI not available

A simultaneous solution for general linear equations with subspace decomposition

N. Varjasi G. Y. Molnarka

Publication Name: Civil Comp Proceedings

Publication Date: 2011-01-01

Volume: 95

Issue: Unknown

Page Range: Unknown

Description:

For solving linear systems of equations there are several known algorithms. For large linear systems with a sparse matrix iteration algorithms are recommended. But in the case of general n x m matrices the classic iterative algorithms are not applicable with a few exceptions. For example in some cases the Lanczos type algorithms are adequate. The algorithm presented here based is on the minimization of residual solution with subspace decomposition. Therefore this algorithm seems to be applicable for the construction of parallel algorithms. In this paper we describe a sequential version of proposed algorithm first and give its theoretical analysis. The algorithm has some genetic characteristics. After this we will formulate a parallel version of algorithm with subspace decomposition in order to study the details of convergence and the speed up effect of the parallel algorithms. The numerical test results of these algorithms including the speed-up effects of the parallel execution will be shown. The comparison of the classical method and the new approach will also be presented considering the running speed and efficiency too. The computer tests have been carried out with parallel and cluster computing methods as well. © Civil-Comp Press, 2011.

Open Access: Yes

DOI: DOI not available

Perceived usefulness of yoga to maintain well-being and in relation to COVID-19 cases among Hungarian yoga practitioners

Henriett Nagy Sándor Rózsa Miklós Bánhidi Gusztáv J. Tornóczky

Publication Name: Journal of Sports Medicine and Physical Fitness

Publication Date: 2022-11-01

Volume: 62

Issue: 11

Page Range: 1541-1551

Description:

BACKGROUND: The present COVID-19 epidemic has had a considerable impact on the mental health of individuals worldwide. Research projects suggests potential benefits of yoga practice for prevention, or as medical supplementation in relation to the present pandemic. This study investigated the association between yoga and health status, and how the frequency of yoga practice affected the mental well-being (MWB) of the respondents. METHODS: Hungarian yoga practitioners (N.=379) aged 20 to 75 years (93.4% female) were asked about their personal health, perceived usefulness of yoga practice for COVID-19 cases and their MWB. Data were collected between April 17 and May 17, 2021. The measurement tool used was an online questionnaire including sociodemographic data, characteristics of yoga practice, COVID-19 and health related questions, and WHO Well-being Index (WBI-5). Associations were examined through ANOVA and X2 tests. RESULTS: There was a significant difference among the yoga practice groups by weekly frequency (once a week, 2-3 times a week, 4-5 times a week, daily) on the total mean score of well-being (WBI-5), F (3, 373) =12.97, P<0.001, ηp 2=0.094. The daily practice of yoga showed the highest MWB. CONCLUSIONS: According to our findings, it can be stated that regular yoga practice is associated with higher level of MWB which can be successful in dealing with COVID-19 issues such as stress and depression.

Open Access: Yes

DOI: 10.23736/S0022-4707.22.13341-4

Evaluation of dummy-head HRTFs in the horizontal plane based on the peak-valley structure in one-degree spatial resolution

György Wersényi

Publication Name: Institute of Noise Control Engineering of the Usa 35th International Congress and Exposition on Noise Control Engineering Inter Noise 2006

Publication Date: 2006-12-01

Volume: 7

Issue: Unknown

Page Range: 4487-4495

Description:

Dummy-heads are often used for standardized measurements where modeling of the human head and torso is relevant. Monaural Head-Related Transfer Functions of a Brüel & Kjaer dummy were measured in the horizontal plane in one-degree spatial resolution. Evaluation is made by plotting the peak-valley structure in frequency. Special frequency and spatial domains can be determined based on the variations of the HRTFs that are relevant to understand physical properties of the dummy -head in measurements and processes of human directional hearing. Symmetries and similarities of measured HRTFs help to scrutinize the perception of directional information in the monaural and binaural evaluation, the "noisy domain" in frequency and space where shadowing of the head occur as well as the filtering effect of the pinna.

Open Access: Yes

DOI: DOI not available

Effect of Thymus vulgaris L. essential oil and thymol on the microbiological properties of meat and meat products: A review

E. Lakatos V. Kapcsándi Babett Greff Miklós Posgay

Publication Name: Heliyon

Publication Date: 2022-10-01

Volume: 8

Issue: 10

Page Range: Unknown

Description:

Since foodborne diseases are often considered as one of the biggest public health threats worldwide, effective preservation strategies are needed to inhibit the growth of undesirable microorganisms in food commodities. Up to now, several techniques have been adopted for the production of safe and high-quality products. Although the traditional methods can improve the reliability, safety, and shelf-life of food, some of them cannot be applied without rising health concerns. Thereby, the addition of various phytochemicals has gained much attention during the last decades, especially for meat products that may be contaminated with pathogenic and spoilage organisms. Thyme (Thymus vulgaris L.), as an important medicinal and culinary herb, is a promising source of bioactive compounds that have a great impact on the microbiological stability of meat by suppressing the undesirable microflora. However, the use of these antimicrobials is still facing difficulties due to their aromatic properties and variable efficacy against targeted species. In this paper, we provide an overview on the potential effects of thyme essential oil (EO) and thymol as bio-preservative agents in meat products. Furthermore, this paper provides insights into the limitations and current challenges of the addition of EOs and their constituents to meat commodities and suggests viable solutions that can improve the applicability of these phytochemicals.

Open Access: Yes

DOI: 10.1016/j.heliyon.2022.e10812

Decision support system for evaluating existing apartment buildings based on fuzzy signatures

Gergely Molnarka László T. Kóczy

Publication Name: International Journal of Computers Communications and Control

Publication Date: 2011-01-01

Volume: 6

Issue: 3

Page Range: 442-457

Description:

In historical district at European cities it is a major problem how to take decision on renovating or replacing existing buildings. This problem is imminent in Budapest (Hungary) in many traditional districts such as the Ferencváros district where we selected a compound area for further examination. By financial aid for the renovation of these buildings which awarded by Municipal Assembly of this district in question there is much uncertainty and confusion concerning how to decide whether or not and how to reconstruct a building where new private owners apply for support. In this paper we propose a formal evaluation method based on fuzzy signature rule bases (the formal being a special case of L-fuzzy object). Using the available expert knowledge we propose a fuzzy signature model including relevance weights and weighted aggregations for each node and parent node, respectively, so that as a result a single membership value may be calculated for each building in question. Linguistic labels for decision (such as worthless, average, highly valuable, etc.) are generated from the values thus obtained. Such linguistic calculations might be of help for the Municipal Assembly awarding financial support. A complete example wit 26 buildings is presented. © 2006-2011 by CCC Publications.

Open Access: Yes

DOI: 10.15837/ijccc.2011.3.2129

Algorithmic Management in Traditional Workplaces: The Case of High vs. Low Involvement Working Practices: The Context of the Non-Inclusive Industrial Relations System in Hungary

Laszlo Imre Komlosi Miklós Illéssy József Pap Éva Farkas Csaba Makó

Publication Name: Journal of Labor and Society

Publication Date: 2025-01-01

Volume: 28

Issue: 3

Page Range: 394-422

Description:

Algorithmic management (am) has become a key research focus in the sociology of work, especially concerning platform work. However, am tools are also impacting traditional workplaces. This study investigates three main questions: the impact of ai on high vs. low-skilled jobs, its effect on employee's role, and the formation of collective voices around am, including non-traditional labour relations actors. The context is the Hungarian industrial relations system, known for low union membership and company-level bargaining. The study compares two cases: a medium-sized company in high-value-added business services and a Hungarian subsidiary of a multinational employing warehouse workers. Contrary to literature suggesting am reduces employee autonomy, the study finds its impact complex, decreasing employee's roles some areas while increasing it in others. Notably, transparency and wage predictability improved. The study also highlights the importance of considering new actors, such as clients and external consultants, in am analysis. Keywords

Open Access: Yes

DOI: 10.1163/24714607-bja10182

An Iterative Approach for the Solution of the Constrained OWA Aggregation Problem with Two Comonotone Constraints

Lucian Coroianu Robert Fuller

Publication Name: Information Switzerland

Publication Date: 2022-10-01

Volume: 13

Issue: 10

Page Range: Unknown

Description:

In this paper, first, we extend the analytical expression of the optimal solution of the constrained OWA aggregation problem with two comonotone constraints by also including the case when the OWA weights are arbitrary non-negative numbers. Then, we indicate an iterative algorithm that precisely indicates whether a constraint in an auxiliary problem is either biding or strictly redundant. Actually, the biding constraint (or two biding constraints, as this case also may occur) are essential in expressing the solution of the initial constrained OWA aggregation problem.

Open Access: Yes

DOI: 10.3390/info13100443