iosr-Jm   Volume-14 ~ Issue-6 ~ Nov-Dec 2018

Abstract: This Work is the result a study that aims to optimize reliability in the cutting area in the context of a re-locating.The works presented in this paper joins within the project of reliability optimization in the cutting area; they focus on the detailed internal and external problems of this area, where we have proposed solutions to improve the availability of equipment, by using the PRCM approach, integrated into the general work methodology DMAIC. In fact, with a large number of failures, industrial companies must produce and improve their production and ensure the operational maintenance of their equipment with an optimal maintenance cost, thus practical solutions are essentials. Therefore, our efforts in this project focus on the analysis of current down time and optimize it by using the basic concepts of PRCM to be framed by the steps of the DMAIC methodology of work in order to achieve the objectives set by the maintenance department.

Key Word: Reliability Optimization, DMAIC, down time, Equipment availability, optimal maintenance cost, PRCM,

[1] Jeroen de Mast, Joran Lokkerbol, An analysis of the Six Sigma DMAIC method from the perspective of problem-solving, International Journal of Production Economics, Volume 139, Issue 2, October 2012, Pages 604-614, ISSN 0925-5273.
[2] Manik Madhikermi, Sylvain Kubler, Jérémy Robert, Andrea Buda, Kary Främling, Data quality assessment of maintenance reporting procedures, Expert Systems with Applications, Volume 63, 30 November 2016, Pages 145-164, ISSN 0957-4174.
[3] Duane Kritzinger, 5 - Failure Modes and Effects Analysis, In Aircraft System Safety, Woodhead Publishing, 2017, Pages 101-132, ISBN 9780081008898.
[4] Yan Liu, Han Koo Jeong, Matthew Collette, Efficient optimization of reliability-constrained structural design problems including interval uncertainty, Computers & Structures, Volume 177, December 2016, Pages 1-11, ISSN 0045-7949.
[5] Dinh Tuan Nguyen, Yann Dijoux, Mitra Fouladirad, Analytical properties of an imperfect repair model and application in preventive maintenance scheduling, European Journal of Operational Research, Volume 256, Issue 2, 16 January 2017, Pages 439-453, ISSN 0377-2217

Abstract: As revealed in various researches, mathematics anxiety implies psychologically a feeling of nervousness or a negative mind-set towards solving mathematical problems, which impacts on students‟ learning practices and outcomes. In looking more closely at why a remarkable number of students may be struggling for improvement in mathematics in comparison to other subjects, it is timely to consider, the mathematics anxiety factor. This study intends to investigate how students‟ anxiety towards this subject affects in their performance. How their anxiety lead them towards inappropriate learning mathematics and consequently poor performance in secondary level students and how to assist in mitigating math anxiety. The study adopted a descriptive survey design and data was largely descriptive by nature. Data were collected using "Math-Anxiety Inventory" for the students.............

[1]. Richardson, F.C., & Suinn, R.M.: 1972, 'The Mathematics Anxiety Rating Scale: Psychometric Data', Journal of Counseling Psychology 19, 551-554.
[2]. D'Ailly, H,. & Bergering, A. J. (1992). Mathematics anxiety and mathematics avoidance behaviour: a validation study of two factor. Educational and Psychological Measurement, 52(2), 369-378.
[3]. Whyte, J. M. (2009). Maths anxiety: The what, where, and how. Unpublished Masterate research report. Palmerston North: Massey University.
[4]. Jain, S., & Dowson, M. (2009). Mathematics anxiety as a function of multidimensional selfregulation and self-efficacy. Contemporary Educational Psychology, 34(3), 240-249.
[5]. Zohar, D. (1998) An Additive Model of Test Anxiety: Role of Exam-Specific Expectations. Journal of Educational Psychology, 90(2), 330-340.

Abstract: In this paper we have discussed about the circular motion and its applications. The basic concept of dynamics and derivation of circular motion is derived. The application problem such as satellite in a circular orbit, moving car are solved by using derivation of circular motion.

Keywords: centripetal force, centrifugal force, clothoid, conical pendulum, uniform magnetic field,

[1]. Gowri.P,Abhinandana.R, Madhu Gokul.B, Saranya.B, Mrithula.R‖ A Case Study on Path of Projectile Motion and ItsApplication‖, International Journal of Engineering Science Invention Research andDevelopment, vol-4, issue-4,dec-2017.
[2]. Gowri.P,Deepika. Dand Krithika.S,―A Case Study on Simple Harmonic Motionand Its Applications‖, International Journal ofLatest Engineering and Management Research (IJLEMR)
[3]. Gowri.P,Asst. Prof, Department of Mathematics, Sri Krishna Arts and Science College, Coimbatore, Tamil Nadu,India. Glory Bebina.E, IIIBsc Mathematics, Sri Krishna Arts and Science College, Coimbatore, Tamil Nadu, India,―A CaseStudyon Elastic Oscillationsandits Applications in Bungee Jumping by Differential Equation", International Journal of Trend in Scientific Research and Development(IJTSRD).
[4]. Gowri.P1,Priyadharshini.S2,Maheswari.T3,1Asst.Prof. Sri Krishna Arts and Science College,2,3Sri Krishna Arts and Science College, ―A Case Study onRudgeKutta4thOrder Differential Equations and Its Application‖, Imperial Journal of Interdisciplinary Research(IJIR).

Abstract: Let G be a finite, non-trivial, simple and undirected graph with vertex set V and an edge set E of order n and size m. For an one-one assignment f : V(G)→{1, 2, …. n} , A Quotient labeling f* :𝐸(𝐺)→ {1, 2, ..... , n} is defined by f*(uv)= 𝑓(𝑢)𝑓(𝑣) where f(u) > f(v), then the edge labels need not be distinct. The maximum value of f*(E(G)) is known as ql(f*), the q-labeling number. The quotient labeling number QL(G) is the minimum value among ql(f*).In this paper the quotient labeling number of quadrilateral snake, double quadrilateral snake, alternate triangular snake, alternate double triangular snake graph, subdivision of triangular and quadrilateral snake graphs along the main path and subdivision graph of triangular and quadrilateral snake graphs are found.

[1]. Gallian J.A., Dynamic Survey of Graph Labeling, Electronic Journal of Combinatorics 18, DS6 (2015).
[2]. Sumathi P. and Rathi A., Some results on quotient labeling of special graphs, Global Journal of Pure and Applied Mathematics. 2017; 13(1):176-178.
[3]. Sumathi P., Rathi A. and Mahalakshmi A., Some more results on quotient labeling of special graphs, International Journal of Pure and Applied Mathematics. 2017; 115(9): 259-268.
[4]. Sumathi P., Rathi A. and Mahalakshmi A., Quotient labeling of Corona of Ladder Graphs, International Journal of Innovative Research in Applied Sciences and Engineering (IJIRASE). 2017; 1(3): 80 -85.
[5]. Sumathi P., Rathi A. and Mahalakshmi A., Quotient labeling of Standard Graphs, International Journal of Innovative Research in Pure and Engineering Mathematics (IJIRPEM), 2017; 1(1) : 1 -8...

Abstract: Applying quantitative research, this paper analyzes the impact of government subsidy on Thai natural rubber export. The result shows that the increase of Thai government subsidy to rubber farmers in September 2013 did not have significant impact on promoting rubber export. In the econometric model established in this paper, government subsidy policy factor is not statistically significant suggesting that the policy does not achieve desired outcome of increasing rubber export. Thai rubber export could be affected by other factors including international rubber prices, Thai rubber production and the behavior of competitors.

Key Word: Natural Rubber Export, Industrial Subsidy Policy

[1]. Arifin, B., ―Policy Reforms for Rubber-Industry Investment‖，《International Rubber Conference and Exhibition 2004》, 2004
[2]. Berman, Nicolas, Philippe Martin, and Thierry Mayer.,―How Do Different Exporters React to Exchange Rate Changes?‖, 《Quarterly Journal of Economics》，2012（127）：437-492
[3]. Dekle, Robert, HyeokJeong, and HeajinRyoo，―Firm Level Heterogeneity and Aggregate Disconnect Puzzle between Exchange Rates and Exports‖, Working Paper, University of Southern California. 2008
[4]. Huchet-Bourdon, M. and B. Mahmani-Oskooee.,―Exchange Rate Uncertainty And Trade Flows Between the United States and China; The Agricultural Versus the Nonagricultural Sector.‖，《The Chinese Economy》,2013（46）：29–53
[5]. Li H, Ma H, XuY.，―How do exchange rate movements affect Chinese exports? —A firm-level investigation‖，《Journal of International Economics》, 2015（97）:148-161..

Abstract: Utilization of advancement or numerical programming approaches in the upstream division of the oil business, particularly to issues in the territory of (1) Generation frameworks plan and tasks, (2) lift gas and generation rate portion and (3) store advancement, arranging, administration and streamlining. Early applications have received Linear Programming (LP) close by heuristics-based strategies, however the ongoing progressing blast in figuring force and advances in enhancement.

Key Word: Operations Research, oil, gas

[1]. Kosmidis, V.D., Perkins, J.D. and Pistikopoulos, E.N. (2004) 'Optimization of well oil rate allocations in petroleum fields', Industrial and Engineering Chemistry Research, Vol. 43, pp.3513–3527. [2]. Mattax, C.C. (1990) Reservoir Simulation, SPE Monograph Volume 17, Henry L. Doherty Series, Richardson, TX: Society of Petroleum Engineers (SPE).
[3]. Stoisits, R.F., Batesole, E.C., Champion, J.H. and Park, D.H. (1992) 'Application of nonlinear adaptive modeling for rigorous representation of production facilities in reservoir simulation', Paper SPE 24898 Presented at the 67th Annual Technical Conference and Exhibition of the Society of Petroleum Engineers Held in Washington DC, USA, 4–7 October 1992.
[4]. Kosmidis, V.D., Perkins, J.D. and Pistikopoulos, E.N. (2004) 'Optimization of well oil rate allocations in petroleum fields', Industrial and Engineering Chemistry Research, Vol. 43, pp.3513–3527.
[5]. Wang, P. and Litvak, M. (2004) 'Gas lift optimization for long-term reservoir simulations', SPE Paper 90506 Presented at the SPE Annual Technical Conference and Exhibition in Houston, TX, USA, 26–29 September 2004..