Data mining in topology education: Rough set data analysis
August 2010
This study explores rough sets, which provide mathematical description for uncertain concepts that can not be defined clearly by traditional logic. The study further examines data mining, which helps to discover meaningful information from large data sets by incorporating it with rough set theory. An investigation in topology instruction was undertaken to exemplify the usability of rough set theory in qualitative data...
Characterizations of a helix in the pseudo - Galilean space
August 2010
In this manuscript, we obtained some characterizations for a helix in the pseudo-Galilean space Key words: Pseudo-Galilean space, helix, position vector.
Preparation, characterization and microbiological studies of Cr+3, Mn+2, Co+2, Ni+2, Cu+2, Zn+2 and Cd+2 chelates of schiffs base derived from vanillin and anthranilic acid
August 2010
New chelates of schiffs base derived from vanillin and anthranilic acid with d-block elements such as Cr+3, Mn+2, Co+2, Ni+2, Cu+2, Zn+2 and Cd+2 have been synthesized and investigated. Their structures were determined on the basis of the elemental analysis, infrared spectroscopy, electronic spectroscopy, thermo gravimetric analyses and electron spin resonance spectroscopy. Molar conductivity measured revealed...
Theoretical investigation of dielectric effects on nanostructure of β - amyloid peptide
August 2010
One group of diseases, known as amyloidoses, which includes Alzheimer’s and the transmissible spongiform encephalopathies, involves deposition of aggregated proteins in a variety of tissues. These diseases are particularly intriguing because evidence is accumulating that the formation of the highly organized amyloid aggregates is a generic property of polypeptides, and not simply a feature of the few proteins...
Application of remote sensing techniques in hydrogeological mapping of parts of Bosso Area, Minna, North-Central Nigeria
August 2010
The study focuses on the hydrogeological mapping of Bosso area of Minna, Niger State using remote sensing techniques whilst considering integration of geophysical and hydrogeological investigation in a synergistic approach. Landsat enhanced thematic mapper band 4 and 7 were used for the study. The satellite imagery that was acquired from Global Land Cover Facility website was rectified and geo-referenced using various...
Texture entropy algorithm for automatic detection of oil spill from RADARSAT-1 SAR data
August 2010
This work presents a method based on the utilisation of texture algorithms for the discrimination of oil spill areas from the surrounding features, e.g. sea surface and look-alikes, using RADARSAT-1 SAR Wide beam mode (W1), Standard beam mode (S2) and Standard beam mode (S1) data acquisition under different wind speeds. The results show that entropy texture algorithm is able to discriminate between oil spills and...
Spectral and statistical analysis of blood samples of sheep vaccinated with anthrax spore vaccine
August 2010
The application of spectroscopy for the study of biomedical compounds has increased tremendously in recent years. Blood is the chief circulatory medium in human and in animal body which can be subjected to non-invasive technique for testing. Pre and post vaccinated blood samples of sheep vaccinated with anthrax spore vaccine was studied using spectrometer. The internal standards among the application peaks were...
Radiation doses due to natural radioactivity in Wadi Bin Hammad, Al-Karak, Jordan
August 2010
This paper aims to introduce original data from measurements conducted in Wadi Bin Hammad, region, Jordan. These data highlight the new result of high-radiation dose equivalents found in part of the region, and also recommend further studies. The exposure rates due to terrestrial gamma radiation were measured in cold and hot water in Wadi Bin Hammad cold and hot water springs. The radiation levels were measured using a...
The solution of the real scalar field in SdS and RNdS spaces
August 2010
In this letter, several works about the solutions of the real scalar field in SdS and RNdS are compared. Some previous works gave out that the wave amplitude near the potential peak is harmonic versus the radius, some gave out the wave amplitude near the potential peak increases, and others showed contrary results. By a simple mathematical calculation, here we unite the aforementioned results and denote that the wave...
Sand water storage systems using coefficient of uniformity as surrogate for optimal design : A laboratory study
August 2010
Uneven surfaces of sand particles provide ideal opportunities, under arid conditions, for runoff to be stored in the voids of sandy riverbed of ephemeral river. Series of laboratory experiments were performed to study major controlling parameters of sedimentation in sand water storage in order to optimize storage potential. Analysis was based on coefficient of uniformity of grain size distributions of deposited...
Comparison of mechanical and bond properties of oil palm kernel shell concrete with normal weight concrete
August 2010
The comparison of the fresh, mechanical and bond properties of grade 30 lightweight concrete, namely oil palm kernel shell concrete (OPKSC) with normal weight concrete (NWC) of similar strength is presented in this paper. Oil palm kernel shell (OPKS), an industrial waste has been used as lightweight aggregates (LWA) in the OPKSC. In addition, mineral admixtures, 10% of silica fume and 5% fly ash have been used. The...
A comparison of horizontal roughing filters and vertical roughing filters in wastewater treatment using gravel as a filter media
August 2010
Roughing filtration can be considered as a major pretreatment process for waste water, since the process efficiently separate fine solid particles over prolonged periods without addition of chemicals. Roughing filters mainly act as physical filters and reduce the solid mass. However, the large filter surface area available for sedimentation and relatively small filtration rates also supports adsorption as well as...
Presence enabled conditional call setup model for IP multimedia subsystem
August 2010
IP multimedia subsystem (IMS) provides the architectural framework for next generation networks. Presence is considered as the most important service of IMS. Currently, a user needs to subscribe for the presence service of the receiver before deciding whether to call that particular receiver or not. This mechanism increases the network traffic and may result in more delay in call setup. To handle this problem, we...
Mesogenic azomethine esters with different end groups: Synthesis and thermotropic properties
August 2010
Series of elongated azomethine esters containing two aromatic rings with stearoyl moiety as one of the terminal carbon chain and various substituents X (where X = H, F, Cl, Br, OCH3, CH3 and C2H5) at the other end of molecule have been isolated and their structures were proposed via physical measurement. The mesomorphic properties of these compounds were investigated via differential scanning calorimetry and...
Synthesis and characterization of organotin(IV) complexes derived of 4-(diethylamino) benzoic acid: In vitro antibacterial screening activity
August 2010
Four organotin(IV) carboxylate complexes derivative of 4-(diethylamino)benzoic acid have been successfully synthesized and characterized quantitatively and qualitatively. The complexes obtained are screened for their in vitro antibacterial screening activity. Monomeric {4-[N(C2H5)2]C6H4COO}2(R)2Sn (R = methyl 1, butyl 2), [{4-[N(C2H5)2]C6H4COO(C4H9)2Sn}2O]2 dimer 3 and...
Equilibrium studies for the removal of basic dye by sunflower seed husk (Helianthus annuus)
August 2010
The sorption characteristics of sunflower (Helianthus annuus) seed husk (SSH) to remove Methylene Blue (MB) from aqueous solution under batch conditions have been investigated. Sorption of MB was found to be pH, concentration and agitation dependent. The kinetics of sorption was rapid with 80% sorption taking place within the first 60 min regardless of its initial concentration. The fast attainment of equilibrium...
A one-way dissection of high-order compact scheme for the solution of 2D Poisson equation
August 2010
We present a one-way dissection formulation of high-order compact scheme for the solution of 2D Poisson equation. One-way dissection is a type of matrix reordering, divide and conquers procedure. Efficient and concise compact schemes of 4th and 6th orders are derived using the truncation errors of the Taylors’ series expansion of the governing equation. The system is split into sub-domains and each sub-domain is...
Construction of the Frenet-Serret frame of a curve in 4D Galilean space and some applications
August 2010
In this work, first, we construct Frenet-Serret frame of a curve in the Galilean 4-space. As a result of this, we obtain the mentioned curve’s Frenet-Serret equations. Then, we prove that tangent vector of a curve in Galilean 4-space satisfies a vector differential equation of fourth order. Additionally, some characterizations of Galilean spherical curves and an example of the main results are...
Improving multiplication and reminder using implementation based on word and index
August 2010
Asynchronous cryptography is one of the most widely used cryptographic algorithms. Much research has been done to find other applications of this cryptography method. Modular exponentiation is one of the primitive operations in these algorithms. Since we need to perform multiplication, square and modular division, most aspects of these studies were based on optimizing each of these algorithms. Since access to faster...
Linking the balanced scorecard (BSC) to business management performance: A preliminary concept of fit theory for navigation science and management
August 2010
Natural oceanic phenomenon, such as internal waves and ocean currents, produce rapid environmental changes which can disrupt ocean-going mass transportation and shipping. The purpose of this study is to examine the relationship between ocean-induced environmental uncertainties and navigational business performance. A number of technical models, both numerical, regression and phenomenological, have already been...
Characterization of groundwater chemistry in the coastal plain-sand aquifer of Owerri using factor analysis
August 2010
Groundwater is a valuable natural resource for various human activities. Factor analysis was applied to the hydrochemical data from the coastal plain-sand (Benin Formation) aquifers of Owerri in order to extract the principal factors responsible for the different hydrochemical facies. By using Kaiser Normalization, the principal factors were extracted from the data. The analysis reveals five sources of solutes. The...
Calculation and analysis of pore vapor pressure of concrete exposed to fire
August 2010
The present work involves calculation and analysis of pore vapor pressure in high strength concrete (HSC) exposed to fire. In order to study the spalling of high strength concrete exposed to fire, a mathematical model of the coupled actions of hydro-thermal effects is established. The temperature field and the pressure field are calculated at a given temperature. Then, the pore vapor pressure is calculated and analyzed...
Observation of the students’ “earthquake†perceptions by means of phenomenographic analysis (primary education 7th grade – Turkey)
August 2010
The purpose of this research is to define and explain how 7th grade students’ in Turkey perceive “earthquake” concept using phenomenographic research methods. The research group of the study is comprised of 553 7th grade students in four cities (Ankara, Adana, Antalya and Karabük) in Turkey. The data of the research was gathered by students’ completing “I...
SMEs; Virtual research and development (R&D) teams and new product development: A literature review
July 2010
Small and medium-sized enterprises (SMEs) are indeed the engines of global economic growth. Their continued growth is a major subject for the economy and employment of any country. Towards that end, virtual research and development (R&D) could be a viable option to sustain and ease the operations of SMEs. However, literature shows there has not been a great deal of research into the diverse characteristic of virtual...
Direct solution of Riccati equation arising in inventory production control in a Stochastic manufacturing system
July 2010
We studied the production inventory problem in a manufacturing system with degenerate Stochastic demand. We derived the dynamics of inventory-demand ratio that evolves according to Stochastic neoclassical differential equation through Ito’s Lemma. We established the Riccati based solution of the Hamilton-Jacobi-Bellman (HJB) equation associated with this problem. Key words: Inventory production...
A new derivative-free method for solving nonlinear equations
July 2010
This paper presents a new method for solving nonlinear equations. The method is free of derivatives and easy to implement. Although its convergence is linear, numerical experiments conducted indicate that its performance compares well not only with Newton-based methods of higher order but with other derivative-free methods as well. Key words: Derivative-free iterative method, nonlinear equations.
Spatial transformations of diffusion tensor magnetic resonance imaging using certain geometric operations
July 2010
The general classes of medical image processing and analysis procedures carried out over scalar images (viz. registration and visualization of X-ray, CT-scan, filtering, image segmentation, ultrasound, diffusion weighted MRI and others) need to be enlarged to diffusion tensor magnetic resonance imaging (DT-MRI) tensor fields in order to bring together qualitative and quantitative information, potentially advancing...
Locally baseline detection for online Arabic script based languages character recognition
July 2010
Baseline detection is one of the most important step in character recognition and has direct influence on recognition result. Due to the complexity of the Urdu scripts based languages, handwritten character recognition is a very difficult task as compared to other languages. Baseline detection is one of the main issue and basic step of mostly preprocessing operations that is, normalization, skewness, secondary strokes...
Gamma-irradiation induced property modification of polypropylene
July 2010
The effects of γ-irradiation on the physico-chemical stability and mechanical properties of commercial polypropylene (PP) have been investigated using X-ray diffraction analysis, Raman spectroscopy, ultraviolent visible spectroscopy and tensile test. The γ-irradiation of polypropylene led to remarkable changes in the physico-chemical properties of the material due to chain scission, oxygen effects and...
The effect of zeolit rate on the thermo-mechanical properties of concrete
July 2010
Zeolite (clinoptilolite) is mainly natural volcanic porous tuff and it has strong absorption ability, large specific surface area and lightness. The concrete has been produced using in the rate of 0, 5, 10 and 15% zeolite as an aggregate in the concrete. In the mixing, water to cement ratio was kept at 0.50. The thermo-mechanical properties of the concrete have been measured. It has been found that thermal conductivity...
Lattice dynamic study of potassium bromide using theoretical approach
July 2010
A unified description of a series of Phonon properties of potassium bromide by means of Van der Waals three-body force shell model [VTBFSM]. This model includes Van der Waals Interactions (VWI) and three-body interactions (TBI) in the framework of both ion polarizable rigid shell model (RSM). In fact the present model [VTBFSM] has revealed much better descriptions of IR/Raman spectra and anhormonic properties and...
Theoretical investigations for electronic structures and photodissociation of bromine molecule
July 2010
We have theoretically studied the nonadiabatic transitions among the lower states with W = 1u symmetry {1u (Lindeman and Wiesenfeld, 1979) to 1u (Alexander et al., 2000)} in the photodissociation of Br2 using the complete active space self-consistent field (CASSCF) computations and the time-independent Schrodinger equations. The CASSCF wave function is formed from a complete distribution of a number...
Lattice Boltzmann simulation of the two-dimensional Poiseuille-Rayleigh-Benard flows instability
July 2010
A numerical method based on the lattice Boltzmann equation (LBE) is developed in two dimensions to solve the equations of conservation of energy and momentum of a Poiseuille-Rayleigh-Benard (PRB) mixed-flow. The configuration considered in this work is a channel heated from below, cooled from the top and crossed by a fluid (Pr = 1). The study is conducted for a range of Rayleigh numbers (0 < Ra < 5000) and...
Selection of walnut types with high fruit bearing and quality in Sanliurfa population
July 2010
This study was conducted to determine walnut types with high fruit bearing and fruit quality within seedling population in Siverek and Hilvan districts of Sanliurfa province and their villages in Turkey during years 2005 and 2006. No studies have been made about walnut trees in these areas up to now. Therefore, this research is very important with respect to be first study about the walnut types in these locations....
Heavy metals in water springs of the Yarmouk Basin, North Jordan and their potentiality in health risk assessment
July 2010
The objective of this study is to determine the seasonal water quality variations of the major springs of the Yarmouk Basin of North Jordan. A total of 36 water samples were collected in October 2006 (dry season) and in May 2007 (wet season) and analyzed for temperature, electrical conductivity, total dissolved solids, pH, Pb, Cd, Zn, Cu, Mn and Fe. The pH was found near alkaline ranging from 7.01 - 7.87 and 6.8 - 8.04...
Chemical and radiological risk assessment of uranium in borehole and well waters in the Odeda Area, Ogun State, Nigeria
July 2010
The activity concentrations of uranium in well and borehole water samples in the Odeda area were measured using gamma ray spectroscopic system. The results obtained were used to calculate human radiological risk over lifetime consumption by the population in the area. The activity concentrations of uranium in all the water supplies for drinking and domestic purposes were found to range from 0.51 ± 0.02 to...
Microwave radiation exposures affect the ldl, hdl, tcl and trg status in rats
July 2010
Effects of Microwave (MW) radiation exposures on LDL, HDL, TCL and TGR have been studied as a means for assessment of health impacts. Exposures caused increase in LDL (354.2%), reduction in HDL (18.6%), increase in TCL (68.4%) and decrease in TGR (31.4%) within the first 24 h. The modifying roles of administered anti-oxidants were evaluated. Vitamins C and E reduced the effects of MW exposures on LDL by 35.4 and 37.7%...
Relationship between global solar radiation and sunshine duration for Northwest China
July 2010
The monthly mean daily data of global solar radiation and sunshine hours for a period of 40 years (1961 - 2000) at 15 stations in Northwest China have been used to study their long-term, seasonal, and inter-annual variations. The variation of clearness index (KT), relative sunshine (RS) and the correlations have been analyzed. The results show that there are significant declining trends of both clearness index (~...
Compressional and shear-wave velocity measurements in unconsolidated top-soil and comparison of the results
July 2010
Seismic compressional, P- and shear, S-wave measurements were done on the unconsolidated top-soil with depth of 1 m at the different locations of the study area. In case of working with metallic P-wave source, the effect of the air-filled zone and disturbance of the air-wave are received by geophones located near the source (short offset). It is possible to reduce the effect of the disturbance of air-wave and to obtain...
Spectral analysis of solar variability and their possible role on global warming
July 2010
In this study, the effect of solar variability on global warming has been studied. This enables us to understand the existence of solar variability effects on temperature. Monthly, four components that may be closely associated with the climate have been studied, which are geomagnetic activity index aa, solar sunspot number Rz from 1868 - 2008, global surface temperature (GST) from 1880 - 2008 and total solar irradiance...
The stability of mesons near event horizon of black hole
July 2010
In this paper we assert that mesons remain stable near the black hole. Because there is not any effect of quarks inside the black hole on density matrix of individual quarks within the meson. Next we calculate the total cross section for mesons produced from one black hole. We conclude that the more the mass of the quark within the hadrons, the lower is the cross section. Finally we calculate the resulting information...
On the accuracy of hiding information metrics: Counterfeit protection for education and important certificates
July 2010
There are two techniques used to hide information - one is steganography while the other is digital watermarking. The objective of this paper is to investigate the functionality and reliability of using the current metrics, which are used to measure the distortion caused by secret data embedding. These metrics are used to measure the quality of the steganographic or watermarked objects. The signal-to-noise...
An application of a noise maps for construction and road traffic noise in Korea
July 2010
Noise has become a serious social concern due to the rapid urbanization brought on by rapid industrial development and economic growth. This study is on the construction noise caused by construction of a building and the road traffic noise resulting from increased traffic volume. A noise map was used to control these sources of noise. Also, this paper examines the influence on nearby areas of the increased road traffic...
On the approximate analysis of nonlinear behavior of structure under harmonic loading
July 2010
In this work, attempted has been made to analyze the nonlinear behavior of structures analytically. Despite the increasing expenses of building structures to maintain their linear behavior, nonlinearity has been inevitable and therefore, nonlinear analysis has been of great importance to the scientists in the field. Studying on nonlinear dynamics highlights the fact that essentially all dynamic systems encountered in...
Beneficial effect of curcumin isolated from Curcuma longa on exercise-induced hepatocyte apoptosis of rat
July 2010
The aim of this study was to determine the effect of curcumin isolated fromCurcuma longa on exercise-induced hepatocyte apoptosis. 24 male Wistar rats were used for the study. The experiment was a 14-day exhaustive exercise. We determined the protein expression of bax and bcl-2 in the hepatic tissues. The results demonstrated that bax and bcl-2 co-regulated the exercise-induced hepatocyte apoptosis. Bax promotes...
An experimental study on preparing photogrammetric rolove plans of antique theatres
July 2010
This study was conducted in Knidos antique theater which is located in town of MuÄŸla, Datça, from 2005 to 2007. In this study, Knidos is documented with photogrammetric method and a rolove of the antique theater is prepared. This work will provide sensitivity for possble future restoration activities. The data will be used for protection, restoration and documentation activities of these activities which may...
A research relating to innovation activities on enterprises using advanced manufacturing technologies
July 2010
This study is aimed at determining and evaluating the usage levels of advanced manufacturing technologies (AMTs) and their applications relating to innovation activities. In addition to this, determination of innovation types and causes are also considered. In the study, the screening method has been used and the study group is consisted of 265 small and medium scale enterprises using advanced manufacturing...
Combined pinch and exergy analysis for energy efficiency optimization in a steam power plant
July 2010
In this paper, the simulation of a 325 MW steam power plant was performed in a Cycle-Tempo 5.0 simulator and operational parameters of the Rankine cycle were optimized using the Exergy concept combined with a Pinch-based approach. The Combined Pinch and Exergy Analysis (CPEA) first considers the representation of the hot and cold Composite Curves of the Rankine cycle and defines the energy and Exergy requirements. The...
Generation of representative solar radiation data for Aegean Region of Turkey
July 2010
Typical solar radiation data is needed in calculation and assessment of many solar energy applications. In this study, typical solar radiation years for seven provinces located in Aegean Region of Turkey were generated from the daily global solar radiation data measured during at least for 15 years, using the Finkelstein-Schafer statistical method. The typical daily global solar radiation data for the locations...
A study on the opinions of the students attending the Faculty of Technical Education regarding industrial internship
July 2010
The purpose of this study is to determine the opinions of the students regarding industrial internship throughout their university education. The study has been devised as a survey. Sampling has been done among randomly chosen 254 students studying in the machine drawing and construction program at the Faculty of Technical Education (FTE) of five universities. The data collected via questionnaires have been fed into the...
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