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Volume 3, Year 2012, Issue 3, July-September

Volume 3, Year 2012, Issue 3, July-September

Computer Assisted Proofs in Dissipative Partial Differential Equations
Author:
Jacek Cyranka
Downloads:
9 x
 

 

Abstract: The goal of this paper is to present a brief survey of our research that has focused on studying the dynamics of dissipative partial diff erential equations by performing computer as sisted proofs. We provide a description of the main ideas behind the computer assisted proofs that we have performed, along with related topics. Th e emphasis is given to the case of the vis cous Burgers equation with constant forcing, for which the existence of globally attracting fixed points has been established. To achieve this goal, we used a combination of analytical results with computer assistance.

Keywords: rigorous numerics, Lohner algorithm, viscous Burgers equation, dissipative partial diff erential equation, interval arithmetic

Area: Applied Mathematics

BibTeX:

@article{Cyrank2012,
  author = {Jacek Cyranka},
  title = {Computer Assisted Proofs in Dissipative Partial Differential Equations},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {3--6},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/95-computer-assisted-proofs-in-dissipative-partial-differential-equations}
}
Procedural Content Generation in Game Development Process
Author:
Grzegorz Jaśkiewicz
Downloads:
13 x
 

 

Abstract: This article describes procedural content generation algorithms used by an independent video game developer in a level design process for the logical game Keri Tap. Genetic algorithms were used as the computational core of the level generation routines. Th e research that was carried out in order to defi ne good algorithm setup has been described. Main idea of this article is to show that PCG [14] methods can be used by small independent video game developers to gain measurable benefits.

Keywords: Procedural content generation, Game development, Video games, Genetic algorithms, Level design

Area: Applied Mathematics

BibTeX:

@article{Jaskiewicz2012,
  author = {Grzegorz Jaśkiewicz},
  title = {Procedural Content Generation in Game Development Process},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {7--10},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/96-procedural-content-generation-in-game-development-process}
}
On asymptotic stability of a linear difference equation depending on parameters
Author:
Michał Przyłuski
Downloads:
8 x
 

 

Abstract: The paper focuses on a linear diff erence equation depending on parameters. Th e equation is related to Good win’s theory of extrapolative expectations. Th e stability region of the equation is investigated. Conditions for asymptotic stability are formulated and presented as an optimisation problem, which is further analysed. Despite employing state-of-the-art solvers, numerical results have turned out to be too ambiguous to provide the basis for definite conclusions about the investigated stability region.

Keywords: difference equation, asymptotic stability, optimisation

Area: Applied Mathematics

BibTeX:

@article{Przyluski2012,
  author = {Michał Przyłuski},
  title = {On asymptotic stability of a linear difference equation depending on parameters},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {11--14},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/97-on-asymptotic-stability-of-a-linear-difference-equation-depending-on-parameters}
}
Strength and optical properties of papers subjected to artificial light ageing
Author:
Marta Gajadhur, Romualda Skrzydelska
Downloads:
6 x
 

 

Abstract: The paper presents strength and optical properties of selected paper printing bases put to operational use such as artifi cial light ageing. Th e process infl uences signifi cantly the quality of printing products. Th e aim of the experiments performed was to reveal the changes occurring in paper during diff erent stages of its operational use. The results obtained enabled to compare the strength and optical properties of the tested bases exposed to light with those found for the paper referred to as “long-lived paper”.

Keywords: artificial light ageing, light fastness, colour coordinates, paper printing bases, long-lived paper

Area: Nanotechnologies and Materials

BibTeX:

@article{Gajadhur2012,
  author = {Marta Gajadhur and Romualda Skrzydelska},
  title = {Strength and optical properties of papers subjected to artificial light ageing},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {15--18},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/98-strength-and-optical-properties-of-papers-subjected-to-artificial-light-ageing}
}
Technique of a choice the optimal combination of Renewable Energy Sources in the Power Supply System taking into account the random nature of changes in weather conditions
Author:
Andrey Shalukho, Elena Sosnina
Downloads:
2 x
 

 

Abstract: In the following paper questions how to increase an effi ciency of renewable energy sources in power supply systems are considered. Th e new additional criterion in choosing a combination of renewable energy sources is off ered — the operational risk of consumer’s electricity (ORCE), which takes into account the random nature of changes in weather conditions. Design procedure ORCE based on application of the portfolio analysis theory is developed.

Keywords: renewable energy sources, operational risk of consumer’s electricity, portfolio analysis theory, renewable energy source portfolio

Area: Power Engineering

BibTeX:

@article{Shalukho2012,
  author = {Andrey Shalukho and Elena Sosnina},
  title = {Technique of a choice the optimal combination of Renewable Energy Sources in the Power Supply System taking into account the random nature of changes in weather conditions},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {19--22},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/99-technique-of-a-choice-the-optimal-combination-of-renewable-energy-sources-in-the-power-supply-system-taking-into-account-the-random-nature-of-changes-in-weather-conditions}
}
Two Methods of Analysis for Huntington’s ‘Clash of Civilizations’
Author:
Alexis Pasichny
Downloads:
4 x
 

 

Agstract: The paper presents two methods for civilizations’ identifi cation developed for analysis of Samuel Huntington’s concept about the ‘clash of civilizations’ with the help of mathematical methods. General origin and formalization of the problem, theoretical structure of the methods, and the approach for further interconnection of the results with global confl ict dynamics are given

Keywords: ‘clash of civilizations’, hypotheses test, world model, expert survey, culture, conflict

Area: Social Sciences in Technology

BibTeX:

@article{Pasichny2012,
  author = {Alexis Pasichny},
  title = {Two Methods of Analysis for Huntington’s ‘Clash of Civilizations’},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {23--25},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/100-two-methods-of-analysis-for-huntington-s-clash-of-civilizations}
}
Economic-mathematical methods for evaluating the performance of corporate social responsibility
Author:
Natalya Simchenko
Downloads:
2 x
 

 

Abstract: The aim of this paper is to examine the applying of economic-mathematical methods for evaluating the performance of corporate social responsibility in Ukraine. We identifi ed a set of quantitative and qualitative indicators which can estimate the state of socially oriented business management. Th e results of the integral indicators calculating of socially oriented management allowed defi ning the coeffi cients which show the level of company’s reputation. Th e applying of fuzzy sets theory, methods of cointegration analysis, correlation analysis and multiple regression allowed evaluating the performance of corporate social responsibility. Th e most important activities which impact on the performance of corporate social responsibility are good business practice in relation to suppliers and other business partners, competency management system, charity, sponsorship activities and regional employment rate.

Keywords: corporate social responsibility, company’s reputation, fuzzy sets theory, methods of cointegration analysis

Area: Social Sciences in Technology

BibTeX:

@article{Simchenko2012,
  author = {Natalya Simchenko},
  title = {Economic-mathematical methods for evaluating the performance of corporate social responsibility},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {26--32},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/101-economic-mathematical-methods-for-evaluating-the-performance-of-corporate-social-responsibility}
}
Parametric study simulation of axially loaded bored pile using finite element Code — Plaxis Software on subsurface soils Khartoum area-Sudan
Author:
Abdelazim Makki Ibrahim, Slamet Widodo, Shen Hong
Downloads:
35 x
 

 

Abstract: The diversity and complexity of subsurface soil in studied area consisting of alluvial deposits cause many diffi culties for foundation engineering. Th erefore, a solution is needed for foundation in this problematic soil. In Sudan, raft foundation represents the basic and most widespread shallow foundation method for engineering structure except for bridges where the pile foundation is used. In recent years, after the discovery of petroleum in Sudan, a major advance in piling technology is needed due to intensive building of large numbers of precast high-rise tower. Th is paper used Plaxis software to understand the behavior of axially loaded bored pile using diff erent loads, lengths and diameters of piles. In this paper a comprehensive analytical study using fi nite element analysis is presented and parametric study of pile under vertical load is performed. Th e analytical and quantitative analysis in this study shows useful understanding of the behavior of bored pile.

Keywords: bored pile, fi nite code, plaxis software

Area: Town and Urban Planning Architecture and Building Engineering

BibTeX:

@article{Ibrahim2012,
  author = {Abdelazim Makki Ibrahim and Slamet Widodo and Shen Hong},
  title = {Parametric study simulation of axially loaded ored pile using finite element ode—Plaxis Software on subsurface soils Khartoum area-Sudan},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {33--38},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/102-parametric-study-simulation-of-axially-loaded-bored-pile-using-finite-element-code-plaxis-software-on-subsurface-soils-khartoum-area-sudan}
}
“We love this place”: place attachment and community engagement in urban conservation planning
Author:
Tarina Jordaan, Karen Puren
Downloads:
11 x
 

 

Abstract: Conservation planning becomes signifi cant as globalisation and rapid urbanisation challenge the preservation of historical urban sites. As an integral part of communities’ place identities, the destruction of built heritage for development challenges local identities. Protecting built environment heritages can preserve local identity. Also, a paradigm shift in conservation planning supports including local perspectives and knowledge systems for sustainable urban conservation planning and democratic participation processes.Community engagement in urban conservation planning off ers town planners insight into emotional values that communities attach to built heritages for incorporation in physical planning proposals. Emotional attachments are traditionally not considered as valid constructs in public participation. However, place attachments can propel communities to constructively participate in development processes if such developments strengthen their place identity, or prompt obstruction if communities perceive developments as threats to place identity. Th is research aims to explore communities’ place attachment through community engagement to inform urban conservation planning proposals. An action research  approach was followed to explore place attachments associated with built heritage resources in two South African communities, Khuma and Stilfontein. Th e research indicates that specifi cally socio-economic, natural, and aesthetic place attachments assisted the communities to envision urban conservation proposals for future built environments for Khuma and Stilfontein that will be cherished. Th ese proposals were unique for each community due to diff erent underlying place attachments. The implication of this research is that urban conservation should acknowledge communities’ place attachments, as they can optimise the fi t between communities and urban conservation efforts.

Keywords: place attachment, community engagement, public participation, urban and regional planning, built environment heritage

Area: Town and Urban Planning Architecture and Building Engineering

BibTeX:

@article{Jordaan2012,
  author = {Tarina Jordaan and Karen Puren},
  title = {“We love this place”: place attachment and community engagement in urban conservation planning},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {39--45},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/103-we-love-this-place-place-attachment-and-community-engagement-in-urban-conservation-planning}
}
Analysis of different equations of undrained shear strength estimations using Atterberg Limits on Pontianak Soft Clay
Author:
Slamet Widodo, Abdelazim Ibrahim, Shen Hong
Downloads:
13 x
 

 

Abstract: Many researchers have done study to estimate the value of undrained shear strength for fi ne grained soils like clay or silt. Determining of undrained shear strength and compressibility  arameters in laboratory are really tedious and time consuming. Th erefore, a correlation between undrained shear strength and Atterberg limits is useful for restraint of testing number and costs. Central tendency parameters such as an average, deviation standard and coeffi cient of variation are performed to analyze the data of soft clay in Pontianak, Indonesia. Based on analysis that undrained shear strength coincides with 50 percentile of distribution data meanwhile undrained compressive strength is around twice of cohesion for testing using unconfi ned pressure. Th is relationship is the most familiar equation. Moreover, undrained shear strength using mean value is more realistic for correlation between undrained shear strength and Atterberg limits on some equations from previous findings.

Keywords: undrained shear strength, Atterberg limit, cohesion, soft clay

Area: Town and Urban Planning Architecture and Building Engineering

BibTeX:

@article{Widodo2012,
  author = {Slamet Widodo and Abdelazim Ibrahim and Shen Hong},
  title = {Analysis of different equations of undrained shear strength estimations using Atterberg Limits on Pontianak Soft Clay},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {46--50},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/104-analysis-of-different-equations-of-undrained-shear-strength-estimations-using-atterberg-limits-on-pontianak-soft-clay}
}
Architecture of places of remembrance as a form of structuring collective experience based on the example of Polish contemporary places of remembrance
Author:
Anna Maria Wierzbicka
Downloads:
8 x
 

 

Abstract: The aim of this presentation is to demonstrate issues concerning places of remembrance, paying special attention to the elements which create meaning and structure collective  experience. Th e analysis will be conducted not only on the level of architectural materials but the current knowledge about psychology of perception (narrative perception) will also be included. Another aim of the presentation is to assess Polish current architectural projects against the background of international accomplishments. Projects implemented by students from Warsaw University of Technology Faculty of Religious and Monumental Architecture under the management of professor Konrad Kucza-Kuczyński will be presented. The  resentation is intended for young scientists of diff erent branches, not only those of architecture and construction. The presentation constitutes part of post-doctoral paper written under Dean’s Grant at the Faculty of Architecture at Warsaw University of Technology in 2011

Area: Town and Urban Planning Architecture and Building Engineering

BibTeX:

@article{Wierzbick2012,
  author = {Anna Mria Wierzbicka},
  title = {Architecture of places of remembrance as a form of structuring collective experience based on the example of Polish contemporary places of remembrance},
  journal = {Challenges of Modern Technology},
  year = {2012},
  volume = {3},
  number = {3},
  pages = {51--55},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/105-architecture-of-places-of-remembrance-as-a-form-of-structuring-collective-experience-based-on-the-example-of-polish-contemporary-places-of-remembrance}
}
 
 
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