Academic Research Publishing Agency Press
International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366

Volume 17, Issue 1(November, 2013)

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1. DATA MINING IN RADIATION PORTAL MONITORING
by Tom Burr, Michael S. Hamada, Kary Myers, Nicholas Hengartner & Richard Picard
Abstract

Currently deployed passive gamma and neutron detectors screen for illicit nuclear material. Archived data can help evaluate special nuclear material detection probabilities and investigate several related issues, including (1) nuisance gamma alarms arising from naturally occurring radiation, (2) the impact of drifting neutron and gamma background rates, and (3) radioisotope identification performance. This paper illustrates roles for data mining to investigate issue (1) and briefly reviews data mining to investigate issues (2) and (3).

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

2. EXPERIMENTAL AND NUMERICAL ANALYSIS OF VICKERS HARDNESS TESTING

by Evando E. Medeiros & Avelino M.S. Dias

Abstract

Indentation Tests have been largely used for determination of superficial hardness. Due to its great applicability, new methodologies are being developed in order to determine mechanical properties such as Young Modulus (E) and fracture toughness (KIC) for brittle materials. However, the Vickers indentation has several limitations and complications as methodology for characterization of these material properties. Thus, the use of a numerical technique able to determine fields of stress and strain during the indentation cycle may give a more reliable interpretation of this kind of test. Hence, this work aims to study the mechanical behaviour of a specimen of tungsten carbide cobalt (WC-Co) during a Vickers indentation test, based on FE calculations with the commercial solver MSC Marc. In a future development of this work, it will be developed numerical models to simulate the mechanisms of crack onset and their propagation during the tests.

Source: International Journal of Research and Reviews in Applied Sciences 
November 2013 -- Vol. 17 Issue 1 -- 2013

3. CALCULATION OF POWER TRANSFORMERS EQUIVALENT CIRCUIT PARAMETERS USING NUMERICAL FIELD SOLUTIONS
by Antônio Flavio Licarião Nogueira
Abstract

Numerical field solutions may be used to determine the electrical equivalent circuit parameters of transformers. The lumped elements of the equivalent circuit correspond to the various physical phenomena in the transformer. The study introduces the sequence of operations necessary to evaluate the parameters of the conventional T-shaped transformer equivalent circuit by means of the numerically simulated open- and short-circuit tests.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

4. THE STABILITY OF THE PIPELINE LAID ON A PORO-ELASTIC SEABED
by Ren Yanrong
Abstract

The dynamic response of buried submarine pipeline subjected to wave must be take into account in the design. In this paper the two-dimensional finite element model has been established, the poro-elastic model has been adopted, the deformation and force condition of pipeline have been calculated under the load gravity and the combined load of weight and harmonic wave force respectively. The key issue is to simulate the interaction among flow, pipe and soil. The factors such as seabed thickness, water depth, pipe’s diameter, elastic modulus, wave period and permeability coeffient have been considered. The numerical results show that pipe’s weights, horizontal load, pipe’s diameter, water depth, elastic modulus have an important effect, but seabed thickness, wave period have little effect. The research results can provide scientific gist for the pipeline’s design.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

5. SLIDING MODE CONTROL FOR A CLASS OF QUASI-LINEAR PARABOLIC PARTIAL DIFFERENTIAL EQUATION SYSTEMS WITH TIME-WARYING DELAY
by Hailong Xing
Abstract

The sliding mode control (SMC) problem for a class of quasi-linear parabolic partial differential equation (PDE) systems with time-varying delay is considered. Firstly, the stability problem for the reduced order sliding dynamical equations is investigated and a sufficient condition for the stability of sliding motion is given. Then the SMC law, which forces the system state from any initial state to reach the sliding manifold within finite time, is designed. At last a simulation example is presented to illustrate effectiveness of the proposed method.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

6. DARBOUX TRANSFORMATION AND EXPLICIT SOLUTIONS FOR TWO NEW DIFFERENTIAL-INTEGRAL EQUATIONS
by Guoliang He & Ting Su
Abstract

A Darboux transformation for two new differential-integral equations in the Manakov hierarchy is given by using the gauge transformation between the corresponding matrix spectral problems. As an application of the Darboux transformation, soliton solutions of the two equations are obtained.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

7. BLOW-UP FOR SOLUTIONS TO A KIND OF QUASI-LINEAR SYSTEMS
by Shikuan Mao & Yongqin Liu
Abstract

The focus of this paper is on the geometric mechanism for blow-up of solutions to Cauchy problem for a kind of quasi-linear systems. We demonstrate that blow-up is closely related to the eigenvalues of matrix by using Cramer criterion and characteristics method.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

8. ESTIMATES FOR EIGENVALUES OF THE SCHRÖDINGER OPERATOR ON DOMAINS IN COMPLETE NONCOMPACT RIEMANNIAN MANIFOLDS
by Li Yanli & Du Feng
Abstract

In this paper, we consider the eigenvalue problem of the Schrödinger operator, and obtain some universal inequalities for eigenvalues of the Schrödinger operator in complete simple connected noncompact Riemmannian manifolds admitting special functions which include hyperbolic space.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

9. CATEGORIZATION OF COUNTRIES COMPETITIVENESS FOR GOLD MINING INVESTMENTS WORLDWIDE
by Karim Rajabu Baruti & Antipas Safari Massawe
Abstract

There is no other study which established the cash-cost and country-benefit based categories of countries competitiveness for gold mining investments worldwide. These categories help in the justification of investment targets and country regimes for gold mining in the variable mine characteristics and country regimes of gold mining globally. This study developed four such categories (I, II, III and IV) using mathematical models of cash-cost and country-benefit fit on the variable mine characteristics and country regimes of gold mining worldwide. Development involved the assessment of cash-costs and country-benefits of the mine characteristics of Tanzanian gold mines fit on the country regimes of gold mining in the 18 topmost gold producing countries in the world in 2008. Comparison of the country regimes characterizing each of the four developed categories enabled to establish the country regimes of gold mining enabling delivery of the desired cash-cost and country-benefit based categories of countries competitiveness in the selection of investment targets and justification of country regimes for gold mining globally.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

10. INVESTIGATING THE HYDRODYNAMIC BEHAVIOR OF INNOVATIVE ARCHIMEDEAN HYDROPOWER TURBINES
by Alkistis Stergiopoulou & Efrosini Kalkani
Abstract

 

The present paper presents the preliminary investigation of the hydrodynamic behavior of Archimedean hydropower turbines, with inclined and horizontal axis, for the exploitation of the low-head hydraulic energy and the kinetic energy of natural and artificial watercourses, including coastal and tidal currents. By using the similarity theory, some experimental cochlear rotors have been developed and some approaches have been made for a series of cochlear small hydropower plants covering small heads, including conditions with zero heads for the particular cases of the coastal and tidal currents of Cephalonia and Euripus Strait

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

11. OPTIMIZED GSCs IN FUNCTION POINT ANALYSIS – A MODIFIED APPROACH
by Jagrit S Srivastava & Gurmit Singh
Abstract

In function point analysis for software cost estimation, fourteen “General Systems Characteristics” (GSCs) are used to calculate a “Value Adjustment Factor” (VAF), with which unadjusted functions point count is adjusted. Although the GSCs and VAF have been criticized on both theoretical and practical grounds, they are used by many function point specialists. This paper extends earlier rationalisation done by C.J. Lokan [1] on GSCs and proposed modified GSCs and formula to calculate Value Adjustment Factor VAF. We conclude that recording non functional requirement by using four new GSCs factor and using modified VAF formula ensure increase in function point count to extent of 20% which in turn will improve productivity. Further empirical research would also be valuable. In particular, it would be worthwhile to repeat the factor analysis on different data sets, to obtain a better understanding of the underlying factors.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

12. DEVELOPING SMALL HYDROPOWER POTENTIALS FOR RURAL ELECTRIFICATION
by Adejumobi I.A., Adebisi O.I. & Oyejide S.A.
Abstract

Electrical energy is an integral component of the overall development of any nation. About sixty – five percent (65%) of the Nigerian rural populace do not have access to electricity. This work therefore presents the surveyed and analyzed potential hydropower sites for rural electrification scheme in Nigeria using the available hydrological data. The fundamental energy equations that determine the theoretical power output, turbine and generator capacities for small hydropower schemes were presented, considering the hydrological head (H) in metres (m), discharge (Q) in cubic metres per second (m3/s) as collected from selected streams, rivers and dams at different parts of the country. The average energy consumption patterns for rural communities in the selected sites were also presented. The results from the analysis showed that theoretical electrical power ranging from 5.13 kW to 5,000 kW which is enough to cater for average rural community loads is realizable in Nigeria if the identified small hydropower sites are developed.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

13. THE IMPACT OF FDI ON ENVIRONMENTAL RESOURCES IN SELECTED COUNTRIES (NON- OECD)
by Mohammad Sadegh Avazalipour, Fatemeh Zandi, Reza Saberi, Nader Hakimipour & Marjan Damankeshideh
Abstract

Recently, concerns on the role of Foreign Direct Investment (FDI) in environmental pollution besides other factors and resources of investment have been greatly considered by lots investigators. Existence of foreign direct investment or multi-national enterprises may show positive marginal spillover effects on technologic characteristics of national enterprises. The national enterprises may tend to enjoy from technologic activities of multi-national enterprises or their technical knowledge for coping environmental problems as well. As long as products of these technologies replace with product of traditional resources, it can be expected that residual loading will also reduce. Therefore, foreign direct investment will probably leave important positive effects on decrease of residual loading and environmental pollution. The main purpose of this research is to find the relationship between FDI and the quality of environments. To do so, firstly some countries are selected from Non-OECD countries, then by using panel data method for period 1996-2007 the relationship between FDI and chemical pollution of water was investigated. The results show that increasing inflow of FDI in Non-OECD countries, increasing FDI causes the amount of water pollution. In other words, Foreign Direct Investment causes environmental disturbances in Non-OECD countries. (selected countries). This study shows that among these countries the ratio of water chemical pollution to gross domestic income (WCP/GNI) in Latvia is 0.0015 which is smaller than other countries.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

14. CALCULATION OF MOMENTUM DISTRIBUTIONS OF 7Be FRAGMENT FROM 8B + 12C REACTION USING THE GLAUBER THEORY
by Idris D. Adamu
Abstract

The momentum distributions of 7Be core fragment from 8B + 12C reaction system are computed in the framework of the Glauber Theory using the CSC_GM code. The contribution of each component of the angular momentum (for ml = 0, ±1) for the p-orbital to the longitudinal angular momentum distribution is also shown. The CSC_GM code used in the computations originated from the CPC Program Library, Queen’s University of Belfast, N. Ireland. The CSC_GM code is a Fortran 90 program that was originally run on UNIX operating system. The code was modified and run on Windows xp. The projectile nucleus is assumed to have the structure of a core plus valence nucleon. The input data needed for the calculations are the core and target densities and the nucleon-nucleon profile function. Results are found to agree with the experimental data, especially at high incident energies.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

15. EFFECT OF TARGET TO SUBSTRATE DISTANCE ON THE PROPERTIES OF RF MAGNETRON SPUTTERED ZnO THIN FILMS
by Roger Ondo Ndong, Hugues Martial Omanda,Patrice Soulounganga, Alain Giani, Brice Sorli & Alain Foucaran
Abstract

We have grown ZnO thin films on silicon substrate by r.f magnetron sputtering using metallic zinc target and investigated the target to substrate distance dependence of their stress and structural properties using X-ray diffraction (XRD). We have confirmed that high-quality ZnO films can be grown in the target to substrate distance (d) range from distance 3 to 9 cm. As the target to substrate distance (d) varied, the microstructure of ZnO films was also varied by the stress with a litle change in crystal orientation. It was found that the compressive stress of ZnO films originated from the small thermalisation of the films.

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013

16. CO-INTEGRATION AND ECONOMETRIC MODEL
by Nader Hakimipour, Mohammad Sadegh Avazalipour, Sharareh Rakhshan & Morteza Mahmoodi
Abstract

Most of the time the time series of macroeconomic variables are related to Non-Stationary. Non-Stationary variable causes several problems in estimating relationships between economic variables and using regression technique. One of these problems is the consensus on macroeconomic theory that should exist a stable long-run relationship between the levels of certain economic variables. In this regard, in case of failure to use proper econometric methods to investigate and estimate the relationship between the variables, it is possible that the irrelevant variables which have only similar time trend are identified to have meaningful relationship, or it is possible that the variables are relevant and the economic theory supports this relationship. However, existence of the time trend results in incorrect assessment of the intensity of the relationship or its direction. In terms of econometrics, both these two relationships are called spurious regression. Certain Co-integration discussions have been to remove this problem, whose basis is the discussion of stationary or non- stationary of time series. In this article, a general and brief view is focused on the set of discussions relevant to the convergence and it has been tried that the aforementioned discussion is more expressed for the scholars in this field in a clear and applicable manner. In this regard, first of all the concept of uniform co-integration in the short term and long term relationships is focused and after that the co-integration vectors and their general features are specified. Eventually, by introducing the Error Correction Model (ECM) and Johansson Test which assesses the long term an stable relationship among the variables by which the discussion on co-integration are completed. 

Source: International Journal of Research and Reviews in Applied Sciences
November 2013 -- Vol. 17 Issue 1 -- 2013


ERRATUM:
COMMON FIXED POINT THEOREM FOR SUB COMPATIBLE AND SUB SEQUENTIALLY CONTINUOUS MAPS IN FUZZY METRIC SPACE USING IMPLICT RELATION
by Saurabh Manro













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