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Found 6289 publications

Decoupling – shifts in ecological footprint intensity of nations in the last decade

Cecília Szigeti Daniel Robert Szabo Gergely Toth

Publication Name: Ecological Indicators

Publication Date: 2017-01-01

Volume: 72

Issue: Unknown

Page Range: 111-117

Description:

The ecological price of economic growth is a heavily debated issue, where ideologies often neglect factual information. In this paper, through the relationship of the ecological footprint and GDP, we examine the tendencies of eco-efficiency in the first decade of the 21st century. We conclude that the average ecological footprint intensity of countries have improved significantly in the given period. In 2009, 50 percent less area was needed to produce a unit of GDP. Many countries could reach the so-called strong decoupling − these countries could increase GDP while decreasing the ecological footprint in absolute terms. We also repeated the analysis of a scientific article published in 2004. We managed to update data and identify ecologically positive tendencies. In ten years, the average of the world's ecological footprint intensity has significantly improved, it halved all in all. We found that 90 percent of the countries started to move to the direction of sustainable development. Among the studied 131 countries, 40 experienced strong decoupling (absolute decrease of resource use), in 77 countries weak decoupling occurred (relative decrease of resource use), and there were only 14 countries, where no decoupling could be observed (relative increase of resource use).

Open Access: Yes

DOI: 10.1016/j.ecolind.2016.07.034

Improving HPLC Analysis of Vitamin A and E: Use of Statistical Experimental Design

Lorinc Garai

Publication Name: Procedia Computer Science

Publication Date: 2017-01-01

Volume: 108

Issue: Unknown

Page Range: 1500-1511

Description:

Analyses of vitamin supplements A and E in food samples are performed mostly with high performance liquid chromatography (HPLC). In majority of cases, sample preparation preceding HPLC implies saponification, a step critical to heat sensitivity of analytes. The method of saponification is clearly defined by ISO standards, however, two important factors, temperature and time of saponification are only given in value ranges instead of exact settings. Resolving this deficiency with the promise of eliminating time and cost consuming experimental probes, statistical experimental design (SED) is introduced to find optimum settings of temperature and time for the best recovery of vitamin supplements in food samples. Finding the optimum settings in SED was supported with Statsoft Statistica 13 For illustrating SED, margarine samples supplemented with vitamin A and E were applied.

Open Access: Yes

DOI: 10.1016/j.procs.2017.05.177

Dynamical system algorithm specification analysis and stabilization

János Botzheim Zhaojie Ju Honghai Liu Cristina Valle Charles C. Phiri Honghai Liu

Publication Name: Lecture Notes in Computer Science Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics

Publication Date: 2017-01-01

Volume: 10462 LNAI

Issue: Unknown

Page Range: 560-569

Description:

This paper investigates approaches to deliberately designing systems whose controllability can be quantified. Preliminary findings of ongoing research are presented on complex dynamical system control algorithms. The specification analysis and quality of the pressure control algorithm applied to a Topical Negative Pressure Wound Therapy device are conducted, with further discussion on self-regulation mechanism and characterization of both the partially observable and partially controllable workspace represented by the negative pressure chamber. Statistical methods are employed to understand the device physics and fuzzy logic and bacterial memetic algorithm are utilised to explore and optimize the existing algorithms and also extract the rule base.

Open Access: Yes

DOI: 10.1007/978-3-319-65289-4_53

Evaluation of training to improve auditory memory Capabilities on a mobile device based on a serious game application

No authors available

Publication Name: 142nd Audio Engineering Society International Convention 2017, AES 2017

Publication Date: 2017-01-01

Volume:

Issue:

Page Range: Unknown

Description:

Capabilities of the auditory memory system were tested in a serious game application developed for the Android mobile platform. Participants played the well-known game of finding pairs by flipping and remembering objects on cards arranged in a matrix structure. Visual objects were replaced by iconic auditory events (auditory icons, earcons). Total time and different error rates were recorded and the effect of training was also evaluated. Results indicate that training contributes to a better performance and human voice samples are the easiest to remember.

Open Access: No

DOI: DOI not available

Comparison of HRTFs from a dummy-head equipped with hair, cap and glasses in a virtual audio listening task over equalized headphones

No authors available

Publication Name: 142nd Audio Engineering Society International Convention 2017, AES 2017

Publication Date: 2017-01-01

Volume:

Issue:

Page Range: Unknown

Description:

Head-Related Transfer Functions (HRTFs) are frequently used in virtual audio scene rendering in order to simulate sound sources at different spatial locations. The use of dummy-head HRTFs (also referred as generic sets) is often criticized because of poor localization performance, leading to e.g. lower spatial resolution, in-thehead localization, front-back reversals etc. This paper presents results of horizontal plane localization obtained by digital filter representations of dummy-head HRTFs that were recorded normally, and using additional cap, glasses and hair on the head. Results of untrained subjects over equalized reference headphones showed no significant difference among the HRTF sets despite of large magnitude differences. This method for customization of generic HRTFs fails if improvement in localization is needed.

Open Access: No

DOI: DOI not available

The effect of wavelet analyis on entropy based fuzzy classification of colonoscopy images

Brigita Sziová L. T. Kóczy Szilvia Nagy

Publication Name: Iwaciii 2017 5th International Workshop on Advanced Computational Intelligence and Intelligent Informatics

Publication Date: 2017-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

Colorectal polyp detection is important in preventing cancer. Structural entropy can detect different structures of distributions, such as image pixel brightness. Wavelet analysis can help in separating large-scale and fine resolution behaviour. In the method presented in this paper, the colonoscopy images are separated into segments, and a classification scheme is built in order to determine, whether there is a polyp part in the image segment or not. Without wavelet analysis edge density and structural entropy can be a basis of fuzzy classification for the polyp content of only good quality colonoscopy images, and still has about 10 percent false classification. In this contribution the effect of wavelet analysis on the classification scheme is studied.

Open Access: Yes

DOI: DOI not available

Failure analysis of aluminum - Ceramic composites

Imre Fekete Ibolya Zsoldos István Kozma

Publication Name: Materials Science Forum

Publication Date: 2017-01-01

Volume: 885

Issue: Unknown

Page Range: 286-291

Description:

The increasingly widespread use of syntactic metal foams is due to their excellent energy absorbing characteristics. Several research groups deal with developing methods that can further improve this characteristic. Several literature analyses have been devoted to the effects of materials selection, cell size and wall thickness of the reinforcing element on the compression strength. In this work an in situ test necessary for the modeling of the failure process introduced. The aluminumceramic composite foams were cyclically upset. The geometry of the test specimen was reconstructed at a certain point of the compression test by μCT technology and digital image analysis. The failure process was characterized by volume change, by the number of broken shells and by the formation of shear plane as a function of the deformation.

Open Access: Yes

DOI: 10.4028/www.scientific.net/MSF.885.286

Diagnostic measurement for the effective performance of motor vehicles with free acceleration

No authors available

Publication Name: 15th IMEKO TC10 Workshop on Technical Diagnostics 2017 - "Technical Diagnostics in Cyber-Physical Era"

Publication Date: 2017-01-01

Volume:

Issue:

Page Range: 188-193

Description:

Diagnostics means instrumental measurement without dismantling. So measuring the engines on rolling roads is not incorporated in this concept, as this measurement is accomplished on engines taken out from vehicles. During service, it is often necessary to measure the performance of the engines, or to judge the performance projection of some corrections. The new method discussed in this article provides a solution to this problem.

Open Access: No

DOI: DOI not available

Cultural ambitions of cities in central and Eastern Europe in the light of two cities' - Tallin and Maribor - case studies

Szabolcs Morvay

Publication Name: Deturope

Publication Date: 2017-01-01

Volume: 9

Issue: 3

Page Range: 162-176

Description:

The cities of Central and Eastern Europe have recognized those trends, which are already visible in the Western Europe on cultural sphere. The Western European cities generate development of society and economy based on culture. These trends came up with the age of knowledge-based economy. The cultural economy and the creative economy are spreading more and more in the Western Europe. The progress is helped by the European Union through several cultural project. For example the European Capital of Culture program. Participation in this process has become a strategic weapon for cities seeking to attract cultural visitors. Nowadays, the event has certainly developed beyond its cultural origins. It is becoming a part of urban economic and cultural revitalization. Since 2007 Central and Eastern European cities also can be the title holder of the European Capital of Culture. The first city was Sibiu in Romania in Central and Eastern Europe. I examine the impacts of the European Capital of Culture program on the local economy and society in the cities in Central and Eastern Europe.

Open Access: Yes

DOI: 10.32725/det.2017.027