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Found 6423 publications

Design and implementation of a software tester for benchmarking stateful NATxy gateways: Theory and practice of extending siitperf for stateful tests

G. Lencse

Publication Name: Computer Communications

Publication Date: 2022-08-01

Volume: 192

Issue: Unknown

Page Range: 75-88

Description:

Our siitperf is the world's first RFC 8219 compliant free software SIIT (Stateless IP/ICMP Translation, also called stateless NAT64) benchmarking tool. It was written in C++ using DPDK (Intel Data Plane Development Kit). Our current effort aims to design and implement a test program for stateful NATxy gateways, including both stateful NAT64 and stateful NAT44 (also called NAPT: Network Address and Port Translation). Due to the object-oriented design of siitperf, it is feasible to extend it for stateful tests, while keeping its original design and features. In this paper, we introduce the problem of benchmarking stateful NATxy gateways and propose various solutions. We disclose the design and the most important implementation decisions of the stateful extension of siitperf. We prove the viability of our design and implementation by a functional NAT64 test and performing the maximum connection establishment rate, throughput, and frame loss rate measurements of the Jool stateful NAT64 implementation. We also carry out an initial performance estimation of the stateful extension of siitperf. Our tester is distributed as free software under the GPLv3 license for the benefit of the research, benchmarking and networking communities.

Open Access: Yes

DOI: 10.1016/j.comcom.2022.05.028

Balanced diet and daily calorie consumption: Consumer attitude during the COVID-19 pandemic from an emerging economy

Laszlo Vasa Ashutosh Kolte Yogesh Mahajan

Publication Name: Plos One

Publication Date: 2022-08-01

Volume: 17

Issue: 8 August

Page Range: Unknown

Description:

This article tries to explore consumer attitudes regarding a balanced diet and daily calorie intake monitoring during the COVID-19 pandemic in India. It has become vital to boost people’s immunity because of reoccurring diseases such as COVID-19, Ebola, and other chronic diseases such as diabetes, thyroid disease, etc. Healthy diets are important for supporting immune systems and keeping track of daily calorie consumption is an accompaniment to this. The research on attitudes toward a balanced diet is reviewed in this empirical study. Researchers employed a tri-component attitude model to assess consumer attitudes about a balanced diet and to track daily calorie consumption. A sample of 400 respondents was surveyed and data were collected with a structured questionnaire. The data were analysed using the structural equation modelling technique. The majority of respondents were found to lack declarative knowledge of both a balanced diet and daily calorie consumption. The effects of the COVID-19 pandemic on consumer attitudes about a healthy diet and daily calorie intake were effectively evaluated using beliefs, affection, and intentions. The repercussions for the government and business community were discussed. This study also evaluates the usefulness of the tri-component attitude model in the Indian context.

Open Access: Yes

DOI: 10.1371/journal.pone.0270843

A diagnostic system created for evaluation and maintenance of building constructions

Attila Koppány

Publication Name: Web Based Engineering Education Critical Design and Effective Tools

Publication Date: 2010-12-01

Volume: Unknown

Issue: Unknown

Page Range: 199-206

Description:

The successful diagnostic activity has an important role in the changes of the repair costs and the efficient elimination of the damages. The aim of the general building diagnostics is to determine the various visible or instrumentally observable alterations, to qualify the constructions from the suitability and personal safety (accidence) points of view. Our diagnostic system is primarily based on a visual examination on the spot, its method is suitable for the examination of almost all important structures and structure changes of the buildings. During the operation of the diagnostic system a large number of data-valuable for the professional practice-was collected and will be collected also in the future, the analysis of which data set is specially suitable for revaluing construction and the practical application of the experiences later during the building maintenance and reconstruction work. For using the system a so-called "morphological box" has been created, that contains the hierarchic system of constructions, which is connected with the construction components' thesaurus appointed by the correct structure codes of these constructions' place in the hierarchy. The thesaurus was not only necessary because of the easy surveillance of the system, but to exclude the usage of structure-name synonyms in the interest of unified handling. The analysis of which data set is specially suitable for revaluing earlier built constructions and can help to create knowledge based new constructions for the future. © 2010, IGI Global.

Open Access: Yes

DOI: 10.4018/978-1-61520-659-9.ch015

Population genetic features of calving interval of the Limousin beef cattle breed in Hungary

Szabolcs Bene Eszter Szabó Márton Szűcs Judit Márton Ferenc Szabó Péter J. Polgár

Publication Name: Acta Veterinaria Hungarica

Publication Date: 2022-07-06

Volume: 70

Issue: 2

Page Range: 113-120

Description:

Variance, covariance components, heritability, breeding values (BV) and genetic trends in calving interval (CI) of the Limousin population in Hungary were evaluated. A total of 3,008 CI data of 779 cows from three herds in 1996-2016 were processed. For influencing effects GLM method, for population genetic parameters and BV estimation BLUP animal model, for trend analyses linear regression was applied. The average CI obtained was 378.8 ± 3.1 days. The variance distribution components of the phenotype were as follow: age of cow at calving 34.30%, season of calving 26.09%, year of calving 23.00%, sire 7.45%, herd 3.23%, sex of calf 0.33% and type of calving 0.30%. The heritability of CI proved to be low (h2 d = 0.04 ± 0.02 and 0.03 ± 0.02; h2 m = 0.01 ± 0.02). The repeatability was low (R = 0.03 ± 0.02). Based on the phenotypic trend calculation, the CI of cows decreased by an average of 0.60 days per year (R 2 = 0.19; P < 0.05). In case of genetic trend calculation, the average BV of sires in CI increased 0.07 and 0.17 days per year (R 2 = 0.23 and 0.27; P < 0.05).

Open Access: Yes

DOI: 10.1556/004.2022.00008

Hierarchical Diagnostics and Risk Assessment for Energy Supply in Military Vehicles

Péter Földesi Szabolcs Kocsis Szurke Dániel Csikor Ferenc Szauter Laszlo T. Koczy

Publication Name: Energies

Publication Date: 2022-07-01

Volume: 15

Issue: 13

Page Range: Unknown

Description:

Hybrid vehicles are gaining increasing global prominence, especially in the military, where unexpected breakdowns or even power deficits are not only associated with greater expense but can also cost the lives of military personnel. In some cases, it is extremely important that all battery cells and modules deliver the specified amount of capacity. Therefore, it is recommended to introduce a new measurement line of rapid diagnostics before deployment, in addition to the usual procedures. Using the results of rapid testing, we recommend the introduction of a hierarchical three-step diagnostics and assessment procedure. In this procedure, the key factor is the building up of a hierarchical tree-structured fuzzy signature that expresses the partial interdependence or redundancy of the uncertain descriptors obtained from the rapid tests. The fuzzy signature structure has two main important components: the tree structure itself, and the aggregations assigned to the internal nodes. The fuzzy signatures that are thus determined synthesize the results from the regular maintenance data, as well as the effects of the previous operating conditions and the actual state of the battery under examination; a signature that is established this way can be evaluated by “executing the instructions” coded into the aggregations. Based on the single fuzzy membership degree calculated for the root of the signature, an overall decision can be made concerning the general condition of the batteries.

Open Access: Yes

DOI: 10.3390/en15134791

Welcome

Péter Földesi Anna Esposito Tamas Mihalydeak Peter Baranyi

Publication Name: 8th IEEE International Conference on Cognitive Infocommunications Coginfocom 2017 Proceedings

Publication Date: 2017-07-02

Volume: 2018-January

Issue: Unknown

Page Range: 3

Description:

No description provided

Open Access: Yes

DOI: 10.1109/CogInfoCom.2017.8268299

Optimizing Video Resolution for Machine Learning-Based Traffic Monitoring Systems: A Performance Analysis

Ferenc Erdos Enas Elshebli

Publication Name: International Conference on Engineering and Emerging Technologies Iceet

Publication Date: 2024-01-01

Volume: Unknown

Issue: 2024

Page Range: Unknown

Description:

This study explores the impact of video resolution on the performance of machine learning-based traffic monitoring systems. Using a combination of empirical analysis and theoretical modeling, we assess how different resolutions affect detection accuracy, resource consumption, and computational efficiency. While other factors such as noise level, or compression artifacts also influence performance, resolution was chosen as a primary variable due to its critical role in balancing detail capture and computational cost. Higher resolutions can enhance object detection accuracy but also significantly increase data processing demands, making resolution a key trade-off in designing efficient surveillance systems. Findings of this study show significant insights into these trade-offs, guiding transportation authorities and system developers in making informed decisions to design scalable traffic monitoring solutions that meet the demands of modern urban environments.

Open Access: Yes

DOI: 10.1109/ICEET65156.2024.10913642

Hungary

Klara Kerezsi Katalin Parti Csaba Gyory Orsolya Bolyky Eszter Sarik

Publication Name: Juvenile Delinquency in Europe and Beyond Results of the Second International Self Report Delinquency Study

Publication Date: 2010-12-01

Volume: Unknown

Issue: Unknown

Page Range: 311-325

Description:

Hungary is situated in Eastern Europe, in the rolling plains of the Carpathian Basin. It covers an area of 93,000 km2, which is roughly equivalent to 1% of Europe's territory. There are 3,145 settlements, 289 of which are urban; their number increased by 123 in the last 15 years, and tripled over the past 25 years. Two-thirds of the country's inhabitants live in urban settlements. Hungary has been an EU member state since 2004. The population of Hungary was 10,077,000 on 1 January 2006 (male: 4.7 million; female: 5.3 million) (HCSO, p. 9). Hungary's population is aging; the total number of people in age cohorts above 60 exceeds the total number of 1-year old to14-year-olds by about half a million. On 1 April 2005, at the time of the micro census, the number of households was more than 4 million, 139 thousand higher compared to that in 2001. The total number of marriages is decreasing, consistently below the number registered in 2000. Slight increases may occur: in 2005, 44,100 couples got married, 0.7% more than the year before. Decrease remains the dominant trend, though. There was no significant change in the divorce rate: 24,700 marriages were dissolved in 2005, about the same as the year before. Since people get married later in life, divorces happen at a later age, too (HCSO, p. 9) © 2010 Springer-Verlag New York.

Open Access: Yes

DOI: 10.1007/978-0-387-95982-5_22

Correlation between the mechanical and the geometrical state of railway vehicle carriages

Lajos Borbás László Bozóky Vince Nagy

Publication Name: Proceedings of the Mini Conference on Vehicle System Dynamics Identification and Anomalies

Publication Date: 2002-12-01

Volume: Unknown

Issue: Unknown

Page Range: 261-269

Description:

The railway vehicle's carriage body must be mechanically repaired if cracks appear in its structure. In such cases all factors concerning the mechanical state of the carriage body should be examined, such as connection between the carriages, adjustment of the wheel forces, the different running states and running on straight and curved track. The aim of this study is to provide the mechanical stress values summarising the simultaneous effects of all these factors.

Open Access: Yes

DOI: DOI not available