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Volume 4, Year 2013, Issue 4, October-December

Volume 4, Year 2013, Issue 4, October-December

Towards Finding Scholarly Articles in Internet Using Hadoop MapReduce with Oozie Workflow
Author:
Jakub Jurkiewicz, Aleksander Nowiński
Downloads:
47 x
 

Abstract: An article focuses on the new methods for automatic processing and analysis of the scientific papers. It covers the very first part of this task – discovery and harvesting of scientific publications from the internet. Article is focused on discovery and analysis of the html documents to identify publication resources. Usage of data from Common Crawl project allows operating on large subset of the web pages without a need to perform an expensive crawl of the WWW. We present methods for automatic identification of pages describing scholarly documents in WWW network using html meta headers. Presented set of rules applied to the data achieves reasonable quality. A system based on these tools is also presented. It allows easy operating and transferring output to the COntent ANalysis SYStem(CoAnSys) - a processing and analysis system developed in ICM. For achieving this goal set of MapReduce tasks running with Hadoop And Ozzie has been used. The quality and efficiency of described rules are discussed. Finally future challenges for our system are presented.

Keywords: Hadoop, web mining, scientific content finding, web page classification

Area: Electronics, Telecommunications and Informatics

BibTeX:

@article{Jurkiewicz2013,
  author = {Jakub Jurkiewicz and Aleksander Nowiński},
  title = {Towards Finding Scholarly Articles in Internet Using Hadoop MapReduce with Oozie Workflow},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {3--6},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/161-towards-finding-scholarly-articles-in-internet-using-hadoop-mapreduce-with-oozie-workflow}
}

 

Biometric watermarking for security enhancement in digital images
Author:
Wioletta Wójtowicz
Downloads:
32 x
 

Abstract: In this paper some preliminary investigation on combination of watermarking technique with biometric data to increase security of digital images in case of medical images is proposed. Performance of watermarking algorithm, based on discrete wavelet transform (DWT) decomposition, that incorporates biometric watermark is elaborated. The frequency domain were chosen as it is proven, that this domain provides better robustness against attacks and leads to less perceptibility of an embedded watermark. To assure confidentiality of patient data their hand geometry features are embedded instead of patient’s name. Proposed system is evaluated by measuring the similarity between embedded and extracted biometric codes.

Keywords: images security, watermarking technique, discrete wavelet transform (DWT), biometrics, principal component analysis (PCA)

Area: Electronics, Telecommunications and Informatics

BibTeX:

@article{Wojtowicz2013,
  author = {Wioletta Wójtowicz},
  title = {Biometric watermarking for security enhancement in digital images},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {7--11},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/162-biometric-watermarking-for-security-enhancement-in-digital-images}
}
Printouts' Quality Depending on Too Small Pressure of a Blanket Cylinder Against an Impression Cylinder and a Plate Cylinder in Offset Machine
Author:
Agnieszka Jurkiewicz, Yuriy Pyryev, Jan Kowalczyk
Downloads:
28 x
 

Abstract: It has been written in many books that correct setting of clamp in a printing offset machine has impact on wear of consumables and machine elements, and quality of printouts. However there has been no clear recipe to do that. In our article we present research on effect of too small pressure between a blanket cylinder against a plate cylinder and an impression cylinder. The challenge was to find method for gaining results of printing with different clamp but with the same printing conditions. During printing, especially when the printing machine stops and starts, a balance between ink and dampening solution is changing. To obtain the same printing conditions with different clamp on the blanket cylinder under blanket, there were fixed underlay sheets with the same thickness and width but different length. To reduce influence of variable thickness of glue the underlay sheets was glued to each other only on the one edge. We printed on two kind of papers: coated and uncoated. The amount of ink transported on paper was adjusted by changing rotation of the ink fountain roller. The spectrophotometer was used to measure optical density. The tone value increase was computed with Murray-Davies equation. While the tone value increase and optical density are very important printout  parameters, our research shows how change of pressure changes printing quality. Our results also help to understand behavior of ink under pressure. Depending on paper and clamp ink could penetrate into the paper or spreads on the paper surface.

Keywords: contact problem, offset printing, blanket cylinder, rubber blanket

Area: Mechanics, Automation and Robotics

BibTeX:

@article{Jurkiewicz2013a,
  author = {Agnieszka Jurkiewicz and Yuriy Pyryev and Jan Kowalczyk},
  title = {Printouts' Quality Depending on Too Small Pressure of a Blanket Cylinder Against an Impression Cylinder and a Plate Cylinder in Offset Machine},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {12--17},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/163-printouts-quality-depending-on-too-small-pressure-of-a-blanket-cylinder-against-an-impression-cylinder-and-a-plate-cylinder-in-offset-machine}
}
Effect of Chemical Composition on the Scraper Conveyor Parts Hardness and Wear Resistance
Author:
D. Glushkova
Downloads:
21 x
 

Abstract: In this paper Tthe optimal chemical composition of steel that provides high hardness and wear resistance of scraper conveyor parts is offeredhas been presented

Keywords: scraper conveyor parts, friction, corrosion, fatigue, mining equipment, interacting surfaces, plastic deformation, pulling unit, durability, alloying.

Area: Nanotechnologies and Materials

BibTeX:

@article{Glushkov2013,
  author = {D. Glushkova},
  title = {Effect of Chemical Composition on the Scraper Conveyor Parts Hardness and Wear Resistance},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {18--20},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/164-effect-of-chemical-composition-on-the-scraper-conveyor-parts-hardness-and-wear-resistance}
}
Spiral-coil countercurrent chromatographic separation of betanin and betanidin ethyl-esters monitored by continuous ESI-MS/MS injection and LC-ESI-MS/MS
Author:
Dorota Tuwalska, Dominika Szot, Sławomir Wybraniec, Peter Winterhalter, Gerold Jerz
Downloads:
19 x
 

Abstract: Betalains present in Beta vulgaris L. (Chenopodiaceae) have a high potential as natural pigments for food applications. They have been used as a substitute of synthetic dyes in processing of gelatine, strawberry yogurts, ice creams, fruits cocktails, candies and biscuits. The stability of betalains is strongly influenced by numerous factors – sugar content, and impact of light, oxygen, water activity, pH and temperature. A mixture of betacyanin mono-, di- and tri-ethyl-esters was separated by a large-volume spiral-coil countercurrent chromatography (spCCC) prototype which yielded fractions continuously off-line injected to an  ESI-MS/MS device. This method yielded a reconstituted pigment profile and finally enabled the MS-target-guided isolation procedure for the whole spCCC-experiment. The individual fractions were analyzed by LC/ESI-MS/MS. Betanin and betanidin mono-, di- and tri-ethyl-esters as well as other decarboxylated derivatives were detected in the chromatograms. The ethyl-esters of betanin were only partially fractionated, but clearly fractionated from the ethyl-esters of betanidin which will be of great value for biological evaluations.

Keywords: spiral-coil countercurrent chromatography (spCCC), betacyanin ethyl-esters, betalains, betacyanins, betanin, betanidin

Area: Chemistry and Pharmacy

BibTeX:

@article{Tuwalska2013,
  author = {Dorota Tuwalska and Dominika Szot nad Sławomir Wybraniec and Peter Winterhalter and Gerold Jerz},
  title = {Spiral-coil countercurrent chromatographic separation of betanin and betanidin ethyl-esters monitored by continuous ESI-MS/MS injection and LC-ESI-MS/MS},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {21--25},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/165-spiral-coil-countercurrent-chromatographic-separation-of-betanin-and-betanidin-ethyl-esters-monitored-by-continuous-esi-ms-ms-injection-and-lc-esi-ms-ms}
}
Selected aspects of using terrestrial laser scanning technology as the source of additional data for building information modeling
Author:
Maria Kołakowska, Ewa Świerczyńska
Downloads:
24 x
 

Abstract: Building Information Modeling is the concept of a digital presentation of the physical and functional properties of an object. This paper presents proposal of use of terrestrial laser scanning technology to complement and verify created three-dimensional models of objects. The issue of the article focuses on the technical aspects of data collection from terrestrial laser scanning and its use in the information system of the building. During the field work authors carried out an experimental measurements of office space by phase laser scanner Z+F Imager 5006h. These data were treated as experimental material to test common methods of calculating the transformation parameters of three-dimensional systems, which are used in the calibration of individual scans and fitting them into the given coordinate system. This step is have a significant effect on the accuracy of the spatial model. The measurement experiment confirmed the need for calibration point clouds based on the largest possible number of tie and enabled to propose an inventory technology of long and slender buildings. It uses the connection between terrestrial laser scanning and conventional tacheometric measurements. This solution will reduce errors transferred to another position in the construction of the traverse. The article also deals with problems related to inventory of architectural and construction aspects of buildings and vectorization integrated point cloud in order to develop plans for the buildings or the measurement of specific surface areas. Creation of the models, on the basis of spatial point cloud built from the line of discontinuity is difficult due to: the impact of calibration errors, causing the displacement between cans and blur single scan points belonging to the same surface. Based on the performed studies it was found that the most important advantage of terrestrial laser scanning is possibility to collect in a short time a large number of points representing the actual state of the object, not the design intent. Using laser scanning we can significantly reduce the time spent directly at site, and perform measurement in dark areas. This technology also has a particular application for creating BIM for the modern buildings with complex geometric form, for which the accuracy and timeliness of the created model can be crucial for cost, speed and ease of execution of  individual works. In this paper authors will attempt to assess the effectiveness of the application of the presented technology for building information modeling.

Key words: terrestrial laser scanning, Building Information Modeling

Area: Civil Engineering, Urban Planning and Architecture

BibTeX:

@article{Kolakowska2013,
  author = {Maria Kołakowska and Ewa Świerczyńska},
  title = {Selected aspects of using terrestrial laser scanning technology as the source of additional data for building information modeling},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {26--32},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/166-selected-aspects-of-using-terrestrial-laser-scanning-technology-as-the-source-of-additional-data-for-building-information-modeling}
}
A participatory approach to public space design as informative for place-making
Author:
Wessel Strydom, Karen Puren
Downloads:
27 x
 

Abstract: Place-making is an empowering process that takes community involvement as point of departure. In South Africa, the planning and design of urban space was previously based on top-down, bureaucratic planning practices that excluded communities from decisionmaking about their neighbourhoods. Together with this, Apartheid policy enforced separate development based on racial grounds, which resulted in communities being relocated to characterless landscapes with limited open spaces. Open spaces are important in low-income high density residential environments as they are prominent public places that form the heart of communities’ social lives. This article reports on the first phase of an on-going research project initiated by Urban and Regional planning at the North-West University, South Africa, that seeks to empower communities to transform local open spaces to vibrant public places. This particular study’s aim was to explore how community involvement can inform the process of place-making. The research was conducted in Ikageng, Potchefstroom, South Africa where the community identified a lack of quality open spaces as a major concern. A qualitative participatory research approach was followed, which included on-site focus group discussions with participants living around an existing open space. Community participation informed place-making in at least two ways: by creating an understanding of the sociospatial dimensions that underlie space and by formulating suggested intervention strategies to address the needs and desires of the community. Suggested interventions include (i) physical interventions (upgrade and beautification of the space), (ii) social  interventions (ongoing community involvement) and (iii) economic interventions (creating employment opportunities).

Keywords: open spaces, place-making, public places, participatory approach

Area: Civil Engineering, Urban Planning and Architecture

BibTeX:

@article{Strydom2013,
  author = {Wessel Strydom and Karen Puren},
  title = {A participatory approach to public space design as informative for place-making},
  journal = {Challenges of Modern Technology},
  year = {2013},
  volume = {4},
  number = {4},
  pages = {33--40},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/167-a-participatory-approach-to-public-space-design-as-informative-for-place-making}
}
 
 
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