Paper Type	::	Research Paper
Title	::	Performance Evaluation of Selected Search Engines
Country	::	Nigeria
Authors	::	Ajayi, Olusola Olajide, ||, Elegbeleye, Damilola Matthew
Page No.	::	01-12
	::	10.9790/3021-04210112
	::	0.4/3021-04210112
		3021-0402-0112

Search Engines have become an integral part of daily internet usage. The search engine is the first stop for web users when they are looking for a product. Information retrieval may be viewed as a problem of classifying items into one of two classes corresponding to interesting and uninteresting items respectively. A natural performance metric in this context is classification accuracy, defined as the fraction of the system's interesting/uninteresting predictions that agree with the user's assessments. On the other hand, the field of information retrieval has two classical performance evaluation metrics: precision, the fraction of the items retrieved by the system that are interesting to the user, and recall, the fraction of the items of interest to the user that are retrieved by the system. Measuring the information retrieval effectiveness of World Wide Web search engines is costly because of human relevance judgments involved. However, both for business enterprises and people it is important to know the most effective Web search engines, since such search engines help their users find higher number of relevant Web pages with less effort. Furthermore, this information can be used for several practical purposes. This study evaluates the performance of three Web search engines. A set of measurements is proposed for evaluating Web search engine performance.

[1] Bar-Ilan, J. (1999). Search engine results over time - a case study on search engine stability. Cyber-metrics, 2/3(1), Retrieved 15/12/2002 (http://www.cindoc.csic.es/cybermetrics/articles/v2i1p1.html).
[2] Bar-Ilan, J. (2000). Evaluating the stability of the search tools Hot-Bot and Snap: A case study. Online Information Review, 24(6), 439–449.
[3] Bar-Ilan, J. (2002). Methods for measuring search engine performance over time. Journal of the American
[4] Society for Information Science and Technology, 53(4), 308–319.
Blair, D. C. (2002). Some thoughts on the reported results of TREC. Information Processing & Management, 38(3), 445– 451.
[5] Brin, S. & Page, L. (1998). The anatomy of a large scale hypertextual Web search engine. Computer Networks and ISDN Systems, 30(1–7), 107–117.

Paper Type	::	Research Paper
Title	::	Application of Data Masking in Achieving Information Privacy
Country	::	Nigeria
Authors	::	Ajayi, Olusola Olajide, ||, Adebiyi, Temidayo Olarewaju
Page No.	::	13-21
	::	10.9790/3021-04211321
	::	0.4/3021-04211321
		3021-0402-0121

Application of data masking in achieving information privacy is implemented in order to enhance privacy of sensitive data. Data privacy is something that is appreciated by all people in different works of life, not only for self-pride but also for security. Think of a medical institution and his patient: the medical client will appreciate the secrecy of his medical data by the medical personnel; in the case of a bank and his client: the client will appreciate the privacy of his account information; just to mention but few cases. The challenge in data privacy is to share data while protecting personally identifiable information. This research work gives detailed analytical information on application of data masking in achieving information privacy. It covers issues on how data in production environment are being masked to avoid exposure of sensitive of sensitive data to an unauthorized user. The information used for this study was extracted from relevant textbooks, journals and internet. A customer-based application was developed to illustrate this subject. Java (using netbeans as the IDE) and MySQL were used as the programming language and back-end database respectively in the development of the said application.

[1] Becket, B, (1998), introduction to cryptography. London Blackwell Scientific Publication.
[2] Behrouz, A, and Frozen, P. (2004) Data communication and Networking. New York Nash vice, T. N: Vanderbilt
[3] University Press.
[4] Camouflage data masking specialist, latest edition.
[5] Data masking best practices, latest edition.

Paper Type	::	Research Paper
Title	::	Project cost monitoring and control: A case of cost/time variance and earned value analysis
Country	::	Nigeria
Authors	::	Mee-Edoiye M. Andawei
Page No.	::	22-25
	::	10.9790/3021-04212225
	::	0.4/3021-04212225
		3021-0402-0125

Projects are conceptualized, planned, executed and or terminated. This cycle which has a normal effort distribution agreeably obeys amongst other factors the environment within which it operates. While it is the intention of project planners to deliver the end-product within pre-determined time, cost and quality considerations, actual project performance has in most cases different from the original project management plan. This situation which is mostly noticed in the construction sector has put project managers on their toes. The paper therefore encourages the use of variance and earned value analysis to ensure cost and time compliance of all project activities. The comprehensive status framework provided by the variance and earned value analysis in this paper will assist in the more accurate assessment of project status and thereby minimizing possible project schedule and budgetary slips.

 

Keywords: - Cost Variance, Time Variance, Earned Value

[1] M.M Andawei, Quantity Surveying in environmental management: the role of cost management and contract procedure in ensuring environmental friendliness and sensitivity in project formulation and execution, Paper presented at 2-day workshop/training program on Drawless Project-BESMM 2 organized by Nigerian Institute of Quantity Surveyors, Lagos, 2005.
[2] P. Chandra, Project: Planning, Analysis, Financing, Implementation, (New Delhi, McGraw-Hill, 2000)
[3] F.H Griffis et al, Construction Planning for Engineers (New York, McGraw-Hill Higher Education, 2000)
[4] Harris Frank and McCaffer Ronald, Modern construction management (London; Collins professional Technical Books. 1985)
[5] Dennis Lock, Project management. (London. Gower Publishing Limited.1996)

Paper Type	::	Research Paper
Title	::	A Survey on mitigations in Secured Cloud Environments
Country	::	India
Authors	::	Mohammed Younus ||, Fahmida Begum ||, Ahmad A.Alhamed
Page No.	::	26-31
	::	10.9790/3021-04212631
	::	0.4/3021-04212631
		3021-0402-0131

Cloud computing now remains as a hot research topic in IT industry because of its mannerism that provides us to make use of various computing resources. Cloud computing mechanism has been proven as an On-Demand paradigm. To create trustiness and belief on cloud to a customers or organizations we need to consider various security aspects. The concept of cloud computing creates new challenges for security, because sensitive data may no longer reside on dedicated hardware. Assuring the security of a software system in terms of testing nowadays still is a quite tricky task to conduct. If considering today's emerging trend in the adoption of cloud computing, This paper mainly focuses on the TaaS in cloud platform and also explains importance of security in cloud platform and also provides few methods to overcome limitations in security aspects of the cloud.

 

Key words: - cloud computing, security and privacy, information Technology, security concerns in cloud.

[1] http://www.futurecloudcomputing.net/survey
[2] http://cloudcomputing.sys-con.com/node/1744132
[3] http://www.computerweekly.com/news/2240089111/Top-five-cloud-computing-security-issues
[4] Wayne Jansen, Timothy Grance The NIST Guidelines on Security and Privacy in Public Cloud Computing
[5] http://www.wwpi.com

Paper Type	::	Research Paper
Title	::	A comparison study between time series model and ARIMA model for sales forecasting of distributor in plastic industry
Country	::	Thailand
Authors	::	Patimaporn Udom ||, Naragain Phumchusri
Page No.	::	32-38
	::	10.9790/3021-04213238
	::	0.4/3021-04213238
		3021-0402-0138

The number of distributors in plastic industry is increasing every year. Therefore, they got a problem about competitive cost more than in the past. One of the ways to solve this problem is management by inventory. Before they improve inventory, the forecasting is important for this process. In the past, they were looking for conventional time series for forecasting sales volume before manages inventory. This study would like to compare the application of three forecasting methods on the amount of the sales volume for plastic distributor, the ARIMA time series method,Moving average method and Holt's and Winter exponential method. After applying five data sets of raw material from plastic distributor by four forecasting methods, the ARIMA model shows better results than other models when compare with other methods by using MAPE (Mean Absolute Percentage Error).

 

Keywords: - Forecasting, ARIMA, Inventory,Naive.

[1] S. Samuthananon, "Inventory management system development in spare-part business", Engieering management, Chulalongkorn University, 2007.
[2] M.Z. Babai, M.M. Ali and J.E. Boylan, "Forecasting and inventory performance in a two-stage supply chain with ARIMA (0,1,1) demand: Theory and empirical analysis," International Journal of Production Economics, 2011.
[3] J. W. Taylor, "A comparison of Univariate Time Series Mesthods for Forecasting Intraday Arrivals at a Call Center," Management Science, vol. 54, pp. 253–265, 2008.
[4] L. Bianchi, J. Jarrett and R. Choudary Hanumara, "Improving forecasting for telemarketing centers by ARIMA modeling with intervention," International Journal of Forecasting 14, pp. 497–504, 1998.
[5] W. A. NG, "A simple classifier for multiple criteria ABC analysis," European Journal of Operational Research, vol177, pp. 344–353, 2007.

Paper Type	::	Research Paper
Title	::	Saving Space from Buildings by Nanotechnology
Country	::	India
Authors	::	Dr. Dalvinder Singh Grewal
Page No.	::	39-48
	::	10.9790/3021-04213948
	::	0.4/3021-04213948
		3021-0402-0148

The population goes on increasing algebraically increasing the need for space and housing. Since it will continue to grow for ever (till the end of the universe) there will always be the need for more spacing for buildings. The haphazard growth building and now multi-storey buildings has created more risks than safety and comfort. We have no alternative than to provide least space occupying buildings if we have to spare space for natural growth with new materials. Best new materials for buildings are nano-carbon coated hardened plastics or clays. Clays are at present used as construction materials, clay particle based composites-containing plastics. Coating & surfaces are used in catalytically active and chemically functional surfaces. Self cleaning windows are coated in highly activated titanium dioxide as water repellent and anti-bacterial. Breathable, waterproof, scratch & stain resisting hard coatings are used in polymers, in-organics and fabrics. These materials will occupy negligible space and can be safely tried out as new building matrials.

Gone are the days when the greenery spread all around the world. Concrete jungles of buildings are now dominating the green grassy lands. Cities are spreading their jaws to eat away farm lands; greenery is vanishing fast. As the population goes on increasing algebraically the need for space and housing too grows accordingly. It will continue to grow for ever till the end of the universe provided something is done to check the growing population. The haphazard growth of multi-storey buildings has created more risks than safety and comfort. We have no alternative than to provide least space occupying buildings if we have to spare space for natural growth.

Paper Type	::	Research Paper
Title	::	Effects of Temperature and Catalyst Mass on the Mechanical Properties of Urea Formaldehyde Resinated Cotton Fabrics
Country	::	Nigeria
Authors	::	Ezeribe A.I. ||, K.A.Bello ||, Adamu H. M. ||, boryo D. E. A. ||, Omar, Pan
Page No.	::	49-55
	::	10.9790/3021-04214955
	::	0.4/3021-04214955
		3021-0402-0155

The dipole forces which facilitate reaction are temperature dependent. Allowing fabrics to over cure degrades the cotton due to excessive heat and distort the attractive force between polar groups of resin – cotton network. Effects of temperature and catalyst mass on the breaking load (BL) and dry crease recovery angle (DRCA) of mono urea formaldehyde resin (MUFR) through Tetra urea formaldehyde resins (TUFR) resinated fabrics were carried out on chemically treated cotton fabrics, and was cured at 40oC to 170oC. The result obtained reveal the combined effects of temperature and catalyst mass on the monomethylol urea resinated fabric samples cured at 120oC(MUFR 120) gave a BL of 7.84kgf at 120oC and 7.40kgf at 100oC along the warp direction, between 0.75g to 1.0g of catalyst. Dimethylol urea resinated cotton fabrics samples cured at 150oC (DURF150) gave a BL of 10.01 kgf, this is followed by DSUFR 120 sample cured at 120oC which gave a BL of 8.21kgf. In fig. 27, trimethylol urea resinated samples cured at 80oC ( TRUFR 80oC) gave the highest BL of 11.32kgf between 0.75g to 1.0g of catalyst. Further increase in curing temperature and mass of catalyst was counterproductive and reduced the tensile strength of samples by 8.0% ; 48% and 38% in DUFR, TRUFR and TUFR samples respectively in the warp axis. The trend replicated itself in weft axis, which gave the maximum BL of 10.01kgf at 150oC but failed around 9.26kgf at 170oC representing a loss in tensile strength of 8% in the weft axis. The DCRA increased with temperature and catalyst mass but reduced as catalyst mass exceed 1.0g. Resins prepared with 0.75g to1.00g of catalyst and it resinated fabrics cured between 150oC to155oC would improve the DCRA and BL of cotton fabrics.

 

Keywords: - Breaking Load (BL),Dry Crease Recovery Angle(DCRA) Stensile strength, Combined Effect of Catalyst Mass,

[1] Ajayi, J.O., Bello, K.A. and Boyede, F.F. (2001). Effect of Liquid Ammonia Pre-treatment, on the Crease Recovery Properties of Resinated Cellulose Fabrics. Journal of Chemical Society, Nigeria 26(1):120-123.
[2] Ajayi, J.O. (2002). The Texi-Colour of a Dream Coat. Paper Presented at the 23rd Series of University Inaugural Lecture of Abubakar Tafawa Balewa University, Bauchi.
[3] Ajayi, J.O. and Bello, K.A. (2005). Colour and Textile Chemistry. 1st Ed., pp.5-11.
[4] American Society for Testing and Materials (1994). ASTM D 1424-83. Standard Test Method Tear Resistance of Woven Fabrics by Falling-
[5] Pendulum (Elemdrof) Apparatus, (7.01), Philadelphia, PA: ASTM.

Paper Type	::	Research Paper
Title	::	Optimum usage of Using Metakaolin and Quarry Dust in High Performance Concrete
Country	::	India
Authors	::	G.R.Vijay shankar ||, Dr.D.Suji
Page No.	::	56-59
	::	10.9790/3021-04215659
	::	0.4/3021-04215659
		3021-0402-0159

Today's environmental problems are more and more important. The industrial area produces lots of waste materials .One of the most useful ways to solve these problems is the consumption of these waste materials in concrete. The quarry dust is an economic and waste material of rock and alternative to the river sand. Conventional concrete is the most extensively used construction material world wide, both in moderately and strongly aggressive environments. High performance concrete (HPC) appears to be a better choice for stronger and durable structures. These needs have made the engineers look for an appropriate technology for improving the performance of concrete. In this paper describes the studies made to ascertain the properties of HPC M40 grade concrete by using Metakaolin as partial cement replacement and Quarry dust as partial fine aggregate replacement to determine the compressive and tensile strength experimentally.

 

Keywords: - Quarry dust, metakaolin, super plasticizers, M40 concrete, strength, results.

[1] Murat M. Hydration reaction and hardening of calcined clays and related minerals: II. Influence of mineralogical properties of the raw-kaolinite on the reactivity of metakaolinite. Cement Concrete Res 1983;13:511–8
[2] Kou, S.C. and C.S. Poon, ―Properties of concrete prepared with crushed fine stone, furnace bottom ash and fine recycled aggregate as fine aggregates‖, Construction and Building Materials, vol. 23, pp. 2877– 2886, 2009.
[3] Celik, T. and K. Marar, ―Effects of crushed stone dust on some properties of concrete‖, Cement and Concrete Research, vol. 26, pp. 1121-1130, July 1996.
[4] Wild, S., J.M. Khatib, and A. Jones, ―Relative strength, pozzolanic activity and cement hydration in super plasticized metakaolin concrete‖, Cement and Concrete Research, vol. 26, pp. 1537-1544, Oct. 1996.
[5] Curcio, F., B.A. DeAngelis, and S. Pagliolico, ―Metakaolin as a pozzolanic micro filler for high performance mortars‖, Cement and Concrete Research, vol. 28, pp. 803–809, June 1998.