Heterogeneous Network (HetNet) is a mixed of small based station such as femto, pico and micro cell within an existing coverage area of macro cell. It has been proposed by the 3rd Generation Partnership Project (3GPP) to provide for the high demand of data by customers. However, one major challenge of HetNet is interference which could lead to low data rate if not mitigated. In this paper we present a review of existing interference mitigation techniques in Long Term Evolution release 10 (LTE rel. 10), and conclude by proposing a new technique to mitigate interference in a femto-macro HetNet.
- Page(s): 01-08
- Date of Publication: 18 December 2019
- O.E. Haruna Centre for Satellite Technology Development (National Space Research and Development Agency), Abuja, Nigeria
- S.Magaji Computer Engineering Department, Ahmadu Bello University, Zaria, Nigeria
- I. Mafiana Centre for Satellite Technology Development (National Space Research and Development Agency), Abuja, Nigeria
- J.O. Ayankale Centre for Satellite Technology Development (National Space Research and Development Agency), Abuja, Nigeria
- I. Azenabor Centre for Satellite Technology Development (National Space Research and Development Agency), Abuja, Nigeria
References
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A Survey on Power Control Techniques in Femtocell Networks. Journal of Communications, 8(12), 845-854. [34]. Saquib, N., Hossain, E., Le, L. B., & Kim, D. I. (2012). Interference management in OFDMA femtocell networks: issues and approaches. IEEE Wireless Communications, 19(3), 86-95. [35]. Scheme, B. T. (2009). LTE: the evolution of mobile broadband. IEEE Communications magazine, 45. [36]. Wang, Y., & Pedersen, K. I. (2011). Time and power domain interference management for LTE networks with macro-cells and HeNBs. Paper presented at the IEEE Vehicular Technology Conference (VTC Fall), 2011, 1-6. [37]. Yeh, S.-p., Talwar, S., Himayat, N., & Johnsson, K. (2010). Power control based interference mitigation in multi-tier networks. Paper presented at the IEEE GLOBECOM Workshops (GC Wkshps), 2010, 701-705. [38]. Zeng, M., Chen, X., Zhang, X., Sang, L., & Yang, D. (2013). A Novel Dynamic Interference Coordination Scheme in Macrocell-Picocell Heterogeneous Networks. 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Y., Sani, S. M., Usman, A. D., Abdulkareem, H. A., & Muhammad, Z. Z. (2019). Performance Evaluation of Reduced-Power ABS and Zero-Power ABS Time Domain Interference Mitigation Technique in Femto-Macro Heterogeneous Network. ATBU Journal of Science, Technology and Education, 7(3), 32-41.
O.E. Haruna, S.Magaji, I. Mafiana, J.O. Ayankale, I. Azenabor "A Review on Interference Mitigation Scheme in Long Term Evolution Advanced (LTE-A) Heterogeneous Network (HetNet)" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.01-08 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/01-08.pdf
In this paper an advanced condition monitoring technique called ODS or Operating Deflection Shapes is made use of to find out the vibration problems associated with the structures, on or to which a rotating machinery is connected, in an oil refinery. The vibration readings are taken before and after structural modifications such as increasing the stiffness. The operating shapes are visualized using ODS software MeScope VES-4.0 Series, which gives a clear picture of the areas of the structure which are weak and need to be stiffened. Also ODS gives information about the modal parameters such as modal frequencies, damping ratios and mode shapes which help in eliminating resonance in the structure by suitably modifying the structure to avoid catastrophic failure of the vibrating parts in a rotating machinery.
- Page(s): 09-15
- Date of Publication: 18 December 2019
- Austine D. D’SouzaAssistant Professor, Department of Mechanical Engineering, NMAMIT, Nitte, Udupi-574 110, India
- K. Subrahmanya BhatH.O.D., Department of Mechanical Engineering, NMAMIT, Nitte, Udupi-574 110, India
- Deepak Prabhakar PMechanical Department, Mangalore Refinery and Petrochemicals Limited., Mangalore-575 030, India
- Arun KulkarniMechanical Department, Mangalore Refinery and Petrochemicals Limited., Mangalore-575 030, India
References
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Austine D. D’Souza, K. Subrahmanya Bhat, Deepak Prabhakar P, Arun Kulkarni "Condition Monitoring Studies on Machinery Structures in an Oil Refinery using ODS " International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.09-15 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/09-15.pdf
In automotive industry, Brake squeal is major problem and lot of research has been carried out to minimise this problem. The brake noise is considered as discomfort to discomfort by the passenger and is a failure state in the eye of the manufacturer. The audible noise generated can be related to physical vibrations occurring in the system which is termed as stick-slip effect. Thus understanding this class of vibration, which is generally friction induced by having the friction coefficient varying with relative speed, is necessary to eliminate brake noise.
- Page(s): 16-22
- Date of Publication: 24 December 2019
- Vijay J DhembareAssistant Professor, Department of Production Engineering, D Y Patil College of Engineering, Akurdi, Pune, Maharashtra, India
- Sanket V BhosaleAssistant Professor, Department of Production Engineering, D Y Patil College of Engineering, Akurdi, Pune, Maharashtra, India
- Jaydeeep M KhadeAssistant Professor, Department of Production Engineering, D Y Patil College of Engineering, Akurdi, Pune, Maharashtra, India
- Bhagyashri PatilAssistant Professor, Department of Electronics Engg, AISSMS COE Pune, Maharashtra, India
References
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Jordan, “Reduction of Squeal Noise from Disc Brake Systems Using Constrained Layer Damping” [8]. Igor Iroz, Peter Eberhard, “Simulation of friction-induced vibrations using elastic multibody models”,2015 [9]. Amr M. M. Rabia, Nouby M. Ghazaly, M. M. M. Salem, Ali M. Abd-El-Tawwab,“ An Experimental Study of Automotive Disc Brake Vibrations’ The International Journal of Engineering And Science (IJES) ,Volume 2,2013, ISSN: 2319 – 1813 ISBN: 2319 – 1805 [10]. K. Shin, m. J. Brennan, J.-E. OH, c. J. Harris, “Analysis of disc brake noise using a two-degree-of-freedom model”, Journal of Sound and vibration (2002) 254(5), 837}848 [11]. Shahabaj Bagwan and Prof.S.V.Shelge, “Review on Study and Analysis of Disc Brake to Reduce Disc Brake Squeal”, International Journal of Innovative Science, Engineering & Technology, Vol. 2 Issue 4, April 2015. [12]. 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Lim, “Suppression of brake squeal noise applying finite element brake pad model enhanced by spectral-based assurance criteria”, Applied Acoustics,2008 ,69, pp.196–214 [18]. D.W.Wang, J.L.Mo, H.Ouyang, G.X.Chen, M.H.Zhu, Z.R.Zhou, “Experimental and numerical studies of friction-induced vibration and noise and the effects of groove-textured surfaces”, Mechanical Systems and Signal Processing,2014,46, pp.191–208 [19]. Toru Matsushima, Kazuhiro Izui, Shinji Nishiwaki “Conceptual design method for reducing brake squeal in disk brake systems considering unpredictable usage factors”, Journal of Mechanical Design, JUNE 2012, Vol. 134 [20]. S. Oberst, J.C.S. Lai, S. Marburg, “Guidelines for numerical vibration and acoustic analysis of disc brake squeal using simple models of brake systems”, Journal of Sound and Vibration,2013,332,pp. 2284–2299 [21]. J.L. Moa, Z.G.Wanga, G.X.Chen, T.M.Shao, M.H.Zhu, Z.R.Zhou, “The effect of groove-textured surface on friction and wear and friction-induced vibration and noise”, Wear,2013,301, 671–681. [22]. Gottfried Spelsberg-Korspeter, “Eigenvalue optimization against brake squeal: symmetry, mathematical background and experiments”, Journal of Sound and Vibration 2012,331, pp. 4259–4268 [23]. Choe-Yung Teoh, Zaidi Mohd Ripin, Muhammad Najib Abdul Hamid, “Analysis of friction excited vibration of drum brake squeal”, International Journal of Mechanical Sciences,2013,67, pp.59–69 [24]. P. Liu, H. Zheng, C. Cai, Y.Y. Wang, C. Lu, K.H. Ang, G.R. Liu “Analysis of disc brake squeal using the complex eigenvalue method”, Applied Acoustics,2007,68, pp.603–615 [25]. A. Akay, O.Giannini, F.Massi, A.Sestieri, “Disc brake squeal characterization through simplified test rigs”, Mechanical Systems and Signal Processing,2009,23, pp. 2590–2607 [26]. Hugo Festjens, Chevallier Gael , Renaud Franck, Dion Jean-Luc, Lemaire Remy, “Effectiveness of multilayer viscoelastic insulators to prevent occurrences of brake squeal: a numerical study”, Applied Acoustics,2012,73, pp. 1121–1128 [27]. Eskil Lindberg, Nils-Erik Hörlin, Peter Göransson, “An experimental study of interior vehicle roughness noise from disc brake systems”, Applied Acoustics 74 (2013) 396–406. [28]. P. Liu, H. Zheng, C. Cai, Y.Y. Wang, C. Lu, K.H. Ang, G.R. Liu, “ Analysis of disc brake squeal using the complex eigenvalue method”, Applied Acoustics 68 (2007) 603–615. [29]. Mario Triches Ju nior, Samir N.Y. Gerges, Roberto Jordan,” Analysis of brake squeal noise using the finite element method: A parametric study”, Applied Acoustics 69 (2008) 147–162. [30]. S. Oberst, J.C.S. Lai,” Squeal noise in simple numerical brake models”, Journal of Sound and Vibration352(2015)129–141. [31]. Manish Paliwal, Ajay Mahajan, Jarlen Don, Tsuchin Chu, Peter Filip,” Noise and vibration analysis of a disc–brake system using a stick–slip friction model involving coupling stiffness”, Journal of Sound and Vibration 282 (2005) 1273–1284. [32]. Jaeyoung Kang, Charles M. Krousgrill,Farshid Sadeghi,” Dynamic instability of a thin circular plate with friction interface and its application to disc brake squeal”, Journal of Sound and Vibration 316 (2008) 164–179. [33]. B. Ryzhik,” Friction-induced vibrations of squeal type due to transverse contraction in a flexible disk”, Journal of Sound and Vibration 326 (2009) 623–632. [34]. Daniel Hochlenert,Gottfried Spelsberg-Korspeter, Peter Hagedorn, “A note on safety-relevant vibrations induced by brake squeal”, Journal of Sound and Vibration 329 (2010) 3867–3872. [35]. Valery Pilipchuk, Paweł Olejnik, Jan Awrejcewicz,” Transient friction-induced vibrations in a 2-DOF model of brakes”, Journal of Soundand Vibration344(2015)297–312. [36]. Jaeyoung Kang ,”Squeal analysis of gyroscopic disc brake system based on finite element method”, International Journal of Mechanical Sciences 51 (2009) 284–294. [37]. Sung Soo Kim, Hee Jung Hwang, Min Wook Shin, Ho Jang,” Friction and vibration of automotive brake pads containing different abrasive Particles”, Wear 271 (2011) 1194– 1202. [38]. A. Akay, O. Giannini, F. Massi, A. Sestieri,” Disc brake squeal characterization through simplified test rigs”, Mechanical Systems and Signal Processing 23 (2009) 2590–2607. [39]. Hui Lü, Dejie Yu,”Optimization design of a disc brake system with hybrid uncertainties”, Advances in Engineering Software 98 (2016) 112–122. [40]. S.W. Yoon, M.W. Shin, W.G. Lee, H. Jang,” Effect of surface contact conditions on the stick–slip behavior of brake friction material”, Wear 294–295 (2012) 305–312.
Vijay J Dhembare, Sanket V Bhosale, Jaydeeep M Khade, Bhagyashri Patil "Disc Brake Squeal-A Review" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.16-22 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/16-22.pdf
One of the major causes of power losses in the Photovoltaic module is mismatch effect. Mismatch losses are a serious problem in PV modules and arrays under some conditions because the output of the entire PV under worst case conditions is determined by the solar cell with the lowest output. This paper presents study on the effect of mismatch on the conversion efficiency of solar module connected in series and parallel. Some techniques of shadowing from a single cell to three cells and six cells both in series and parallel were employed. It was found that there is power lose in series than in parallel combination as a result of shadowing some cells on the module. The power loss in series combination was found to be between 21 to 73%; while in parallel combination power loss ranges from 33 to 52%. The overall voltage in series combination has lowered from 32-10V while the current in the same series combination remains 3.2A.But in parallel combination, the current decreases from 6.1 – 3.1 A and a slight decrease change in the voltage from 22 – 20V all to the non-shaded to the shadowing of one to six cells in the module. The study observed that the percentage loss in series combination is found to be more than that in parallel combination. The total power generated by the mismatching modules is less than the power produced by one module.
- Page(s): 23-27
- Date of Publication: 25 December 2019
- Mohammad, A.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
- Shuaibu, I. M.Department of Pure and Applied Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria
- Bello, I.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
- Mohammad, A. G.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
- Abdulllahi, M.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
- Nasiru, I.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
- Tanimu, A. T.Bioresources Development Centre, National Biotechnology Development Agency, Katsina, Nigeria
References
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Mohammad, A., Shuaibu, I. M., Bello, I., Mohammad, A. G., Abdulllahi, M., Nasiru, I., Tanimu, A. T. "Effect of Mismatch on the Conversion Efficiency of Solar Modules" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.23-27 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/23-27.pdf
Titanium dioxide nanopowder doped with aluminum (TiO2/Al) is prepared by optimized sol-gel method. The specimens are annealed at 5000C and 7000C for 1 hour in air. X-ray diffraction pattern (XRD) exhibits pure anatase phase along with Al peaks in the case of TiO2/Al specimen annealed at 5000C whereas TiO2/Al specimen annealed at 7000C shows Al peaks with mixed (anatase/rutile) phase. The crystallite size of TiO2/Al specimens annealed at 5000C and 7000C are 25±5 nm and 45± 5 nm respectively. The optical band gap of Al doped TiO2 specimens are reduced to 2.60 eV for 5000C and 2.37 eV for 7000C as compared to their undoped TiO2 specimens 3.0 eV and 2.75 eV respectively. Scanning electron microscopy (SEM) and Raman spectroscopy is used to understand the morphology and bonds present in TiO2/Al specimens. Therefore doping of Al in TiO2 reduces energy band gap value which increases its possible applications in the field of solar energy and gas sensing.
- Page(s): 28-31
- Date of Publication: 25 December 2019
- Shubhra MathurDepartment of Physics, JaganNath Gupta Institute of Engineering & Technology, Sitapura Industrial Area, Tonk Road, Jaipur, Rajasthan, 302022, India
- Rohit JainDepartment of Physics, JaganNath Gupta Institute of Engineering & Technology, Sitapura Industrial Area, Tonk Road, Jaipur, Rajasthan, 302022, India
References
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Anpo,” Fe3+-TiO2 Photocatalysts prepared by combining sol-gel method with hydrothermal treatment and their characterization”, J. Photochem. Photobiol. A, vol 180, pp. 196-204, 2006. [15]. S. N. Aqilah Sulaiman, M. Z. Noh, N. N. Adnan, N. Bidin and S. N. Ab Razak,” Effects of photocatalytic activity of metal and non-metal doped TiO2 for Hydrogen production enhancement - A Review” Journal of Physics: Conference Series, vol 1027, pp. 1-12, 2018. [16]. F. Bensouici, M. Bououdina, A. A. Dakdhel, T. Souier, R. Tala-Ighil, M. Toubane, A. Iratni, S. Lia and W. Cai,” Al doping effect on the morphological, structural and photocatalytic properties of TiO2 thin layers”, Thin Solid Films, vol 616, pp. 655-661, 2016. [17]. M. Khairy and W. Zakaria, “Effect of metal doping of TiO2 nanoparticles on their photocatlytic activities toward removal of organic dyes”. Egyption Journal of Petroleum, vol 23, pp. 419-426, 2014. [18]. R. Kaur, P. Singla and K. Singh,” Transition metals (Mn. Ni. Co) doping in TiO2 nanoparticles and their effect on degradation of diethyl phthalate”. International Journal of Environmental Science and Technology, vol 15, pp. 2359-2368, 2018. [19]. S. B. Eadi, S. Kim, S. W. Jeong and H. W. Jeong,” Novel preparation of Fe doped TiO2 nanoparticles and their applications for gas sensor and photocatalytic degradation”, Advances in Materials, Science and Engineering, vol 2017, pp. 1-6, 2017. [20]. Purwaningsih Hariyati, Susanti Diah, Fajarin Rindang and Rochiem Rochman, “Sol- gel synthesis of titanium dioxide doping aluminium as sensor gas material”, Proceedings of the 3rd Applied Science for Technology Innovation, ASTECHNOVA 2014, International Energy Conference, Yogyakarta, Indonesia, 2014, pp. 31-38. [21]. K. Vijayalakshmi and V. Rajendran, “Synthesis and characterization of nano-TiO2 via different methods”, Archives of Applied Science Research vol 4,pp. 1183-1190, 2012. [22]. S. G. Pawar, M. A. Chougule, P. R. Godse, D. M. Jundale, S. A. Pawar, B. T. Raut and V. B. Patil, “Effect of annealing on structure, morphology, electrical and optical properties of nanocrystalline TiO2 thin films”, J. Nano Electron. Phys. vol 3, pp. 185-192, 2011. http://essuir.sumdu.edu.ua/handle/123456789/9672 [23]. M. Vamsi Krishna and Xavior M Anthony, “Experiment and statistical analysis of end milling parameters for Al/SiC using response surface methodology”, International Journal of Engineering and Technology, vol 7, pp. 2274-2285, 2015. [24]. A. K. Tripathi, M. K. Singh, M. C. Mathpal, S. K. Mishra and A. Agarwal, “Study of structural transformation in TiO2 nanoparticles and its optical properties”, Journal of Alloys and Compounds, vol 549 pp. 114-120,2013 http://dx.doi.org/10.1016/j.jallcom.2012.09.012 [25]. C. Weiwei, Y. Hui and G. Xingzhong, “A facile synthesis of nanocrystalline spherical TiO2 particles and its photoluminescent properties”, Procedia Engineering, vol 94, pp. 71-75, 2014 https://doi.org/10.1016/j.proeng.2013.11.042 [26]. S. Bakardjieva, J. Subrt, V. Stengl, M. J. Dianez and M. J. Sayagues, “Photoactivity of anatase–rutile TiO2 nanocrystalline mixtures obtained by heat treatment of homogeneously precipitated anatase”, Applied Catalysis B: Environmental, vol 58, pp. 193-202, 2005 http://dx.doi.org/10.1016/j.apcatb.2004.06.019 [27]. Vyacheslav Syzrantsev, Evgenii Paukshtis, Tatyana Larina, Yuriy Chesalov, Sergey Bardakhanov and Andrey Nomoev, “Features of surface structure of alumina and titanium dioxide nanoparticles produced using different synthesis methods”, Journal of Nanomaterials, vol 2018, pp. 1-10, 2018. [28]. K. R. Nemade, R. V. Barde and S. A. Waghuley, “Liquefied petroleum gas sensing by Al- doped TiO2 nanoparticles synthesized by chemical and solid-state diffusion routes”, Journal of Taibah University for Science, vol 10, pp. 345-351, 2016. [29]. K. R. Nemade and S. A. Waghuley, “Low temperature synthesis of semiconducting α-Al2O3 quantum dots”, Ceram. Int.,vol 40, pp. 6109-6113, 2014. [30]. Y. J. Choi, Z. Seeley, A. Bandyopadhyay, S. Bose and S. A. Akbar, “Aluminium doped TiO2 nanopowders for gas sensors”. Sensors and Actuators B: Chemical, vol 124, pp 111-117, 2007. [31]. C. Dighavakar, A. Patil, S. Patil and R. Borse, “ Al doped TiO2 thick film resistor as H2S gas sensor” Sensors and Transducers, vol 9, pp. 39-47, 2010. [32]. F. Huang, Y. B. Cheng and R. A. Caruso “ Al-doped TiO2 photoanode for Dye- sensitized solar cells” Aust. J. Chem, vol 64, pp. 1-4, 2011. [33]. B. Roose, S. Phatak and U. Steiner, “Doping of TiO2 for sensitized solar cells”, Chem. Soc. Rev, vol 44, pp. 8326-8349, 2015.
Shubhra Mathur, Rohit Jain, "Fabrication of Al doped TiO2 Nanopowder by Sol Gel Method for Gas Sensing and Solar Applications" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.28-31 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/28-31.pdf
India in the last two decades has seen ambitious women strive for empowerment competing at par with men in careers. The advent of the IT era has opened up vast job opportunities for women. Corporate organizations and Government have also recognised their pursuit and laid emphasis on gender equality, in terms of opportunities, career growth and education. However working women are faced with a unique set of challenges due to their gender and perceived pre-dominant role of a home maker. This creates an inevitable challenge for women to sustain a suitable balance between work-life and family-life. This paper aims to create a framework that consists of the key factors (primary challenges) from work-life and family-life that impact work-life balance of professional women working in the IT industry. As an exploratory study, 33 working female professionals working in the IT industry in India across various cities were interviewed to understand these diverse challenges. The factors that emerged in the study were analysed in multiple dimensions like personal, professional, social and government sphere of influence to get a comprehensive depiction of the framework. Five fundamental challenges that impact the work-life balance of a professional woman working in the IT industry emerged which include: Work-load; Gender discrimination; Support systems; Health issues; and Compromises. Details of the study are presented in the paper.
- Page(s): 32-37
- Date of Publication: 28 December 2019
- Chhavi GuptaResearch Scholar, Research Centre -Department of IEM, RV College of Engineering, Mysore Road, Bangalore, India
- Rajeswara Rao KVSAssociate Professor, Department of IEM, RV College of Engineering, Mysore Road, Bangalore, India
References
[1]. Ahuja, M. K. (2002). Women in the information technology profession: A literature review, synthesis and research agenda. European Journal of Information Systems, 11(1), 20-34. [2]. Aryee, S., Srinivas, E. S., & Tan, H. H. (2005). Rhythms of life: antecedents and outcomes of work-family balance in employed parents. Journal of applied psychology, 90(1), 132. [3]. Bhatnagar, D., & Rajadhyaksha, U. (2001). Attitudes towards work and family roles and their implications for career growth of women: A report from India. Sex Roles, 45(7-8), 549-565. [4]. Boyar, S. L., Maertz Jr, C. P., Mosley Jr, D. C., & Carr, J. C. (2008). The impact of work/family demand on work-family conflict. Journal of Managerial Psychology, 23(3), 215-235. [5]. Carlson, D. S., Kacmar, K. M., & Williams, L. J. (2000). Construction and initial validation of a multidimensional measure of work–family conflict. Journal of Vocational behavior, 56(2), 249-276. [6]. Clark, S. C. (2000). Work/family border theory: A new theory of work/family balance. Human relations, 53(6), 747-770. [7]. Davidson, M. J., & Burke, R. J. (Eds.). (2011). Women in management worldwide (Vol. 2). Aldershot: Gower. [8]. Doble, N., & Supriya, M. V. (2010). Gender Differences in the Perception of Work-Life Balance. Managing Global Transitions: International Research Journal, 8(4). [9]. Fisher-McAuley, G., Stanton, J., Jolton, J., & Gavin, J. (2003, April). Modelling the relationship between work life balance and organisational outcomes. In Annual Conference of the Society for Industrial-Organisational Psychology. Orlando (pp. 1-26). [10]. Frone, M. (2003). Work-family balance. In J.C. Quick & L.E. Tetrick (Eds.), Handbook of occupational health psychology (pp. 143162). Washington DC: American Psychological Association. [11]. Goulding, C. (2005). Grounded theory, ethnography and phenomenology: A comparative analysis of three qualitative strategies for marketing research. European journal of Marketing, 39(3/4), 294-308. [12]. Greenhaus, J. H., & Beutell, N. J. (1985). Sources of conflict between work and family roles. Academy of management review, 10(1), 76-88. [13]. Harrington, J. M. (2001). Health effects of shift work and extended hours of work. Occupational and Environmental medicine, 58(1), 68-72. [14]. Hayman, J. (2005). Psychometric assessment of an instrument designed to measure work life balance. Research and Practice in Human Resource Management, 13(1), 85-91. [15]. Kelkar, G., & Nathan, D. (2002). Gender relations and technological change in Asia. Current Sociology, 50(3), 427-441. [16]. Kofodimos, J. R. (1993). Balancing act: How managers can integrate successful careers and fulfilling personal lives. Jossey-Bass. [17]. Kossek, E. E., Colquitt, J. A., & Noe, R. A. (2001). Caregiving decisions, well-being, and performance: The effects of place and provider as a function of dependent type and work-family climates. Academy of management Journal, 44(1), 29-44. [18]. Patel, R., & Parmentier, M. J. C. (2005). The persistence of traditional gender roles in the information technology sector: A study of female engineers in India. Information Technologies & International Development, 2(3), pp-29. [19]. Raghuram, P., Herman, C., Ruiz-Ben, E., & Sondhi, G. (2017). WOMEN AND IT SCORECARD-INDIA. [20]. Shahtalebi, S., & Yarmohammadian, M. H. (2012). Barriers to women managers climb the peaks of success. Procedia-Social and Behavioral Sciences, 46, 3088-3092. [21]. Strauss, A. L., & Corbin, J. M. (1998). Basics of qualitative research: Techniques and procedures for developing grounded theory (2nd. ed.). Newbury Park, CA: Sage Publications. [22]. Sturges, J., & Guest, D. (2004). Working to live or living to work? Work/life balance early in the career. Human Resource Management Journal, 14(4), 5-20. [23]. Valk, R., & Srinivasan, V. (2011). Work–family balance of Indian women software professionals: A qualitative study. IIMB Management Review, 23(1), 39-50.
Chhavi Gupta, Rajeswara Rao KVS "A Conceptual Framework & Analysis of Work-life Balance Challenges of Women Professionals in the IT Industry" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.32-37 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/32-37.pdf
The sandy soils generally are soft and low strength and these properties of the cause to differential settlements, less shear strength and high compressibility in the soils. It is difficult to find natural soil that provided high strength and high durability in practice. Hence it is necessary to improve the engineering properties of soil. Modification techniques are applied to increase the physical and mechanical properties of the soils to the desired level. In this study, sandy soil was modified by using mixtures of waste materials such as PET fiber and marble dust. For the modification of sandy soil, PET fiber content was selected as 0.1%, 0.2% and 0.3% of the total weight of sandy soil samples. The contents of marble dust were 5%, 10% and 15% of the total weight of sandy soil samples. The modified sandy soil samples were subjected to the unconfined compression test and freeze-thaw test under laboratory conditions to investigate the freeze-thaw behaviors of modified sandy soil samples. The results show that the modified sandy soil samples with the mixtures of wastes have high resistance to the freeze-thaw cycles when compare with the unmodified sandy soil samples. Consequently, it is concluded that the mixtures of wastes such as PET and marble dust can be successfully used for the modification of sandy soils in the geotechnical applications.
- Page(s): 38-42
- Date of Publication: 04 January 2020
- Necmi YarbaşıAtaturk University, Oltu Earth Sciences Faculty, Geological Engineering Department, 25400 Erzurum, Turkey
- Ekrem KalkanAtaturk University, Oltu Earth Sciences Faculty, Geological Engineering Department, 25400 Erzurum, Turkey
References
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Engineering Properties of Silty Soil Stabilized with Lime and Rice Husk Ash and Reinforced with Waste Plastic Fiber. J. Mater. Civ. Eng. 25:1260-1270. [24] Prabakar, J., Sridhar, R.S., 2002. Effect of Random Inclusion of Sisal Fibre On Strength Behavior of Soil. Construction and Building Materials, 16, 123-131. [25] Prabakar, J., Dendorkar, N., Morchhale, R.K., 2003. Influence of fly ash on strength behavior of typical soils. Construction and Building Materials 18, 263-267. [26] Puppala, A.J., Musenda, C., 2002. Effects of fiber reinforcement on strength and volume change in expansive soils. Transportation Research Record 134-140 (Paper No: 00-0716). [27] Rahmannejad, M., Toufigh, V., 2018. Influence of Curing Time and Water Content on Unconfined Compressive Strength of Sand Stabilized Using Epoxy Resin. International Journal of Engineering 31 (8), 1187-1195. [28] Ranjan, G., Vasan, R.M., Charan, H.D., 1994. Behaviour of Plastic fibre-Reinforced Sand. Geotextiles and Geomembranes 13 (8), 555-565. [29] Senol, A., Edil, T.B., Benson, C.H., 2006. Soft subgrades’ stabilization by using various fly ashes. Resources Conservation and Recycling 46 (4), 365-376. [30] Sezer, A., Inan, G., Yilmaz, H.R., Ramyar, K., 2006. Utilization of a very high lime fly ash for improvement of Izmir clay. Building and Environment 41, 150-155. [31] Sherwood, P., 1993. Soil stabilization with cement and lime. State of the art review. London: Transport research laboratory, HMSO. [32] Shooshpasha, I., Shirvani, R.A., 2015. Effect of cement stabilization on geotechnical properties of sandy soils. Geomechanics and Engineering 8 (1), 17-31. [33] Viklander, P., 1997. Compaction and thaw deformation of frozen soil, permeability and structural effects due to freezing and thawing. PhD Thesis, Luea University of Technology, Luea, Sweden. [34] Viklander, P., Eigenbrod, D., 2000. Stone movements and permeability changes in till caused by freezing and thawing. Cold Regions Science and Technology 31, 151-162. [35] Yarbaşı, N., Kalkan, E., 2019a. The Stabilization of Sandy Soils by Using the Plastic Bottle Waste. International Journal of Advance Engineering and Research Development 6 (11), 140-144. [36] Yarbaşı, N., Kalkan, E., 2019b. Use of Waste Material (Oltu Stone Waste) for Soil Stabilization. International Journal of Latest Technology in Engineering, Management & Applied Science 8 (11), 102-107. [37] Yetimoglu, T., Salbas, O., 2003. A study on shear strength of sands reinforced with randomly distributed discrete fibers. Geotextiles and Geomembranes 21, 103-110. [38] Zaimoglu, A.S., 2010. Freezing-Thawing Behavior of Fine-Grained Soils Reinforced with Polypropylene Fibers. Cold Regions Science and Technology 60, 63-65.
Necmi Yarbaşı, Ekrem Kalkan "Freeze-Thaw Behaviors of Sandy Soils Modified by Mixtures of PET Fiber and Marble Dust" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.38-42 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/38-42.pdf
The objective of this study is to analyze the influence of employee Relations Management (ERM) on Employee Performance (EP). To accomplish this objective 120 samples were selected randomly from the whole population (staff of Dangote Plc in Ibese Ilaro). A simple linear regression was conducted to examine how well ERM predict level of EP. The result of the test shows that there exist a strong positive relationship between ERM and EP (r=.802, p<.01); ERM has a strong positive power on EP (R2=.642) which means 64% of variance in EP was predicted from ERM; a unit change in ERM will result in 0.97 increase in EP. The regression equation for predicting EP from ERM was Y=20.1867 + 965 (X). Some diagnostics outcome of the research was not spurious. The bootstrapped 95% confidence interval for the slope to predict EP for ERM range from -2.11 - 1.712 which signifies that the model was free from outliers, the PP plot and Durbin Watson value 2.286 did not exceed (-1<>3) and that implies the observation were independent. Based on the outcome of the test it was recommended that organization should endeavor to adopt good ERM practice as a technique for enhancing productivity.
- Page(s): 43-47
- Date of Publication: 06 January 2020
- A.O. OgunsanwoDepartment of Business Administration and Management, Federal Polytechnic, Ilaro, Ogun State, Nigeria
- G.A. KazeemDepartment of Business Administration and Management, Federal Polytechnic, Ilaro, Ogun State, Nigeria
References
[1]. Abushawish, N. (2013). Antecedents and Consequences of Organizational Trust Applied Study on UNRWA Employees in Gaza Field Office. [2]. Adofu, I.& Akoji, O. . (2013). Alleviating Poverty Through The Use Of Entrepreneurship Skill Acquisition In Kogi State,Nigeria. International Open Journal of Economies, 1(2), 14-23. [3]. Ansong,F., Akuoko, K.O &Dwumah, P. (2012). Employment Involvement in Decision Making and Worker Performance in selected organizations in ashanti Region of Ghana. International Journal of Multidisciplinary management Studies, 2(6), 11-23. [4]. Bajaj, R., Sinha, S. & Tiwari, V. (2013). Crucial Factors of Human Resource Management for Good Employee Relations:A Case Study. ). International Journal of Mining, Metallurgy & Mechanical Engineering,, 1(2), 90-92. [5]. Bajaj. (2013). suggestions to implement Human Relations and its Dterminants in Public Sectors. American Journal of Engineerng research, 02(12), 91-97. [6]. Chandra, G. (2009). Human Resource Management in WIHG. Master Thesis. [7]. Chinomona, R. & Sandada, M. (2013). Shared Goal, Communication and Absence of Damaging Conflicts as Antecedents of Employee Relationship Strength at Institutions of Higher Learning in South Africa. Mediterranean Journal of Social Sciences, 4(3), 137-145. [8]. Gillenson, M., Stafford, T. & Yang, Y. (2011). Satisfaction with Employee Relationship Management Systems: The Impact of Usefulness on Systems Quality Perceptions. European Journal of Information Systems, 20, 221–236. [9]. Holtzhausen, L. & Fourie, L. (2011). Employees’ perceptions of institutional values and employer- employee relationships at the North-West University. Journal of Public Affairs, 11(4), 243–254. [10]. Jing, Z. (2013). Research on Employee Relationship Management of SMEs in china. fifth international conference, 1-7. [11]. Mohd Shariff, M. N., Peou, C., & Ali, J. (2010). Moderating Effect of Government Policy on Entrepreneurship and Growth Performance of Small-Medium Enterprises in Cambodia. International Journal of Business and Management Science, 3(1), 57. [12]. Mshenga, P. M., & Richardson, R. B. (2012). Micro and small enterprise participation in tourism in coastal Kenya. Journal of Small Business Economics , 1-15. [13]. Ngari, J. M., & Agusioma, N. L. (2013). Influence of Employee Relations On Organization Performance of Private University In Kenya. International Journal of Innovative Research and Studies, 2(8), 183-210. [14]. Pradeep, D. D. & Prabhu, N. (2011). The Relationship between Effective Leadership and Employee Performance. International Conference on Advancements in Information Technology , 198-207. [15]. Sarmad, M., Shahzad, K., Abbas, M. & Khan, M. A. (2011). . Impact of Emotional Intelligence on employee’s performance in telecom sector of Pakistan. African Journal of Business Management, 5(4), 1225-1231. [16]. Tansel, A., & Gazioglu, S. (2013). Management Employee Relations, Firm Size and Job Satisfaction. International Journal of Manpower, 35(8), 1260-1275. [17]. Vineet , T., Sinha, S. & Bajaj, R. (2013). Employee Relationship Management: an effective means to develop Public Sectors. Journal Search and Research, 4(3), 21-27. [18]. Wargborn, C. (2008). Managing Motivation In Organizations - Why Employee Relationship Management Matters. . Saar0062ruecken: VDM. [19]. Yongcai, Y. (2010). Employee Relationship Management of Small and Medium-sized Enterprises. . International Conference on E-Business and E-Government. IEEE.
A.O. Ogunsanwo, G.A. Kazeem "Employee Relations Management and Employee Performance (A Study of Dangote Cement, PLC, IBESE)" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.43-47 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/43-47.pdf
The availability of variant critical velocity predicting models with their associated coefficients with each claiming superiority, it become difficult in choosing the most appropriate models for predicting liquid loading in gas wells. Whereas most of these models are identical in their constituent variables, their coefficients are quite different and so their predicting capabilities. Therefore, it becomes imperative that the impact of these coefficients in accurately predicting the critical velocity in gas wells be investigated. Five critical velocity models were investigated using a field data and their coefficients adjusted below and above 20% while monitoring how close their predictions are to the observed values. It was observed that Turner et al. and adjusted Turner et al. models, did not cause any appreciable change in loading prediction accuracy beyond 20% rather the liquid loading prediction accuracies for these models remains invariant at 35.71%. For Ruiquing and Huiqun’s model, the prediction accuracy initially remains invariant between 28.57% and 60% increments but thereafter started decreasing. Li et al. model experienced a steady increase in prediction accuracy across the range of percentage increase whereas Coleman et al. model initially decreased mixed results. Its prediction accuracy initially decreased up to 40% model coefficient increment; and started increasing to 60% and stabilizes thereafter. This clearly shows that there exist an optimum range of conditions under which each model’s application is optimum below or above which the accuracy of the predictions becomes unreliable. It is also pertinent to note that accuracy of these models would strongly be dependent on the reliability of observed data. Therefore, it is important to constantly investigate the critical velocity of each well over time since properties of wells changes and such investigations must be based on well specific cases rather field.
- Page(s): 48-53
- Date of Publication: 06 January 2020
- Wolu Gloria OromaDepartment of Petroleum and Gas Engineering, University of Port Harcourt, Port Harcourt, Nigeria
- Amieibibama JosephDepartment of Petroleum and Gas Engineering, University of Port Harcourt, Port Harcourt, Nigeria
- Dulu AppahDepartment of Petroleum and Gas Engineering, University of Port Harcourt, Port Harcourt, Nigeria
References
[1]. Aboutaleb G. J. G. and Vahid K. (2015). Prediction of Gas Critical Flow Rate for Continuous Lifting of Liquids from Gas Wells Using Comparative Neural Fuzzy Inference System. Journal of Applied Environmental and Biological Sciences, Volume 5(8S), pp. 196-202. [2]. Ardhi H.L. (2016). Modelling Two Phase Pipe Flow in Liquid Loading Gas Wells Using the Concept of Characteristic Velocity, Ph. D Thesis submitted to Texas A & M University. [3]. Bello K. O. and Idigbe K. I. (2015). Development of a New Drag Coefficient Gas Multiphase Fluid Systems. Nigerian Journal of Technology, Volume 34 (2), pp. 280 – 285. http://dx.doi.org/10.4314/njt.v34i2.10. [4]. Bolujo E.O, Fadairo A.S, Ako C.T, Orodu D.O, Omodara O.J and Emetere M.E. (2017): A New Model for Predicting Liquid Loading in Multiphase Gas Wells, International Journal of Applied Engineering Research, 12 (14), 4578-4586 [5]. Bouw E.K. (2017): Analysis of End of Field Life Techniques and predicting Liquid Loading using Artificial Neural Networks, a Masters Dissertation Submitted to Department of Petroleum Engineering, Delft University of Technology. [6]. Cheng, N. (2009). Comparison of Formulas for Drag Coefficient and Settling Velocity of Spherical Particles. Powder Technology, Volume189, pp. 395-398. [7]. Coleman, S.B., Clay, H.B., McCurdy, D.G., Norris III, H.L., (1991a). A new look at predicting gas-well load-up. J. Petroleum Technol., 43 (3), 329-333. [8]. Coleman, S.B., Clay, H.B., McCurdy, D.G., Norris III, H.L., (1991b). Understanding gaswell load-up behavior. J. Petroleum Technol., 43 (3), 334-338. [9]. Dousi, N., Veeken, C. A. M., and Currie, P. K. (2006). Numerical and Analytical Modeling of the Gas-Well Liquid-Loading Process. (English). SPE Production & Operations, Volume 21 (4), pp. 475-482. SPE-95282-PA. http://dx.doi.org/10.2118/95282-pa. [10]. Dukler, A. E. (1960). Fluid Mechanics and Heat Transfer in Vertical Falling-Film Systems. Chem. Eng. Prog. Symp. Ser., Volume 56 (30), pp. 1-10. [11]. Fruhwirth, R.K. and Hofstätter, H. (2015): Modelling of Wellbore Heat Transfer for Optimising Oil & Gas Production. Powerpoint presentation [12]. Ghadam, A. G. and Kamali, V. (2015). Prediction of Gas Critical Flow Rate for Continuous Lifting of Liquids from Gas Wells Using Comparative Neural Fuzzy Inference System. Journal of Applied Environmental and Biological Sciences, Volume 5(8S), pp. 196-202. [13]. Hewitt, G. F. (2012). Churn and Wispy Annular Flow Regimes in Vertical Gas–Liquid Flows. Energy & Fuels, Volume 26 (7), pp. 4067-4077. http://dx.doi.org/10.1021/ef3002422. [14]. Khamehchi E., Khishvand M., and Abdolhosseini H. (2016): A case study to optimum selection of deliquificati on method for gas condensate well design: South Pars gas field, Ain Shams Engineering Journal, 7, 847–853 [15]. Li, M., Li, S.L., Sun, L.T., (2002). New view on continuous-removal liquids fromgaswells. SPE Prod. Facil., 17 (1), 42-46. [16]. Ruiquing Ming and Huiqun He (2017). A New Approach for Accurate Prediction of Liquid Loading ofDirectional Gas Wells in Transition Flow or Turbulent Flow. Hindawi Journal of Chemistry, Volume 2017, article ID 4969765, 9 pages, https://doi.org/10.1155/2017/4969765. [17]. Turner, R.G., Hubbard, M.G., Dukler, A.E., (1969). Analysis and prediction ofminimumflow rate for the continuous removal of liquids from gas wells. J.Petroleum Technol., 21 (11), 1475-1482. [18]. Wang Yi-Wei and Zhang Shi-Cheng (2010): A New Calculation Method for Gas-Well Liquid LoadingCapacity, Journal of Hydrodynamics, Volume 22(6), 823-826.DOI: 10.1016/S1001-6058(09)60122-0
Wolu Gloria Oroma, Amieibibama Joseph, Dulu Appah "Effects of Model Coefficient Adjustments on Liquid Loading Prediction Accuracy of Critical Velocity Models " International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.48-53 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/48-53.pdf
This paper determines the propagation delay and on chip power consumed by each basic and universal gates and basic arithmetic functions designed using existing reversible gates through VHDL. Hence a designer can choose the best reversible gates to use for any logic circuit design. The paper does a look up table analysis of truth tables of the reversible gates to find the occurrence of the AND OR, NAND, NOR and basic arithmetic functions, useful to build complex combinational digital logic circuits.
- Page(s): 54-63
- Date of Publication: 06 January 2020
- Soham BhattacharyaElectronics and Communication Engineering Department, Heritage Institute of Technology, Kolkata, India
- Anindya SenElectronics and Communication Engineering Department, Heritage Institute of Technology, Kolkata, India
References
[1] WIKIPEDIA on “Dark Silicon”. [2] R. Landauer in “Irreversibility and Heat Generation in the Computing Process”. IBM J. Research and Development,5(3): pp. 183-191, 1961. [3] R. Keyes, R. Landauer in “Minimal energy dissipation in logic”, IBM J. Res. Dev. 14(1970) 152–157. [4] Charles H. Bennett , in "Logical Reversibility of computation", IBM Journal of Research and Development, vol. 17, no. 6, pp. 525-532, 1973. [5] W.D. Pan, M. Nalasani “Reversible logic”, IEEE Potentials ( Volume: 24 , Issue: 1 , Feb.-March 2005 ). [6] B. Davari ; R.H. Dennard ; G.G. Shahidi in “CMOS scaling for high performance and low power-the next ten years.” [7] P. Gupta; A. Agrawal; N.K. Jha in “An Algorithm for Synthesis of Reversible Logic Circuits”. [8] T.Toffoli, Automata, Languages and Programming. Springer Verlag, 1980, ch. title: Reversible Computing, pp. 632–644. [9] B.Hema Latha in “Necessities of Low Power VLSI Design Strategies and its involvement with new Technologies”. [10] Mayank Kumar Singh and Rangaswamy Nakkeeran in “Design of novel reversible logic gate with enhanced traits”. [11] D.P. Vasudevan ; P.K. Lala ; Jia Di ; J.P. Parkerson in “Reversible-logic design with online testability”. [12] M. Mohammadi and M. Eshghi, “On figures of merit in reversible and quantum logic designs,” Quantum Information Processing, vol. 8,no. 4, pp. 297–318, Aug. 2009. [13] D. Maslov and G. W. Dueck, “Improved quantum cost for n-bit toffoli gates” IEE Electronics Letters, vol. 39, no. 25, pp. 1790–1791, Dec.2003. [14] M. A. Nielsen and I. L. Chuang, in “Quantum Computation and Quantum Information”, New York: Cambridge Univ. Press (2000) [15] V.Vendral, A. Barenco, and A.Ekert,in “Quantum networks for elementary arithmetic operations”, Phys. Rev. A, vol. 54, no. 1, pp. 147-153, Jul1996. [16] E. Fredkin and T. Toffoli in "Conservative Logic". International Theoretical Physics Vo121, pp.219-253, 1982. [17] R. Feynman in “Quantum Mechanical Computers”, Optic News, Vol 11, pp 11-20 1985. [18] A. Peres in “Reversible logic and quantum computers”, Phys.Rev. A 32 (1985) 3266-3276. [19] Shams, M., M. Haghparast and K. Navi in “Novel reversible multiplier circuit in nanotechnology”, World Appl.Sci. J.,3(5): 806-810. [20] Dmitri Maslov, Gerhard W. Dueck, and D. Michael Miller in “Synthesis of Fredkin–Toffoli Reversible Networks” in IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, VOL. 13, NO. 6, JUNE 2005. [21] G. W. Dueck, D. Maslov, and D. M. Miller, “Transformation-based synthesis of networks of Toffoli/Fredkin gates,” in Proc. IEEE Canadian Conf. Electrical and Computer Engineering, May 2003, pp. 211–214. [22] Himanshu Thapliyal and M.B. Srinivas in “A Novel Reversible TSG gate and Its Application for Designing Reversible Carry Look-Ahead and Other Adder Architectures” Center for VLSI and Embedded System Technologies, IIIT,Hyderabad, India, Asia-Pacific Conference on Advances in Computer Systems Architecture. [23] WIKIPEDIA on “Reversible Computation”.
Soham Bhattacharya, Anindya Sen "Power and Delay Analysis of Logic Circuits Using Reversible Gates" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.54-63 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/54-63.pdf
From the view of greenhouse effect and usage of inefficient Internal Combustion engines, antransformation to the electric vehicles for the mode of transportation is required. A main drawback in the electric vehicles is the draining of the battery and the battery charging station. A different types of charging system is studied, by implementing in the automobiles the internal combustion engines will be replaceable.
- Page(s): 64-65
- Date of Publication: 08 January 2020
- Madhusudhan M Department of ECE, Dr. AIT, Bengaluru, Karnataka, India
- Mohankumar V Department of ECE, Dr. AIT, Bengaluru, Karnataka, India
References
[1]. R. vaka. R.K. keshri, “rieview on contactless power transfer for electric charging”. Energies, vol. 10, no. 5.p.636, may 2017. [2]. Vaka Ravikiran, Ritesh Kumar, “Efficient wireless charging of Batteries with Controlled Temperature and asymmetrical coil coupling”. IEEETrans. pp.978-1-5386-9316. 2018 [3]. Seungmim Jeong, Young Jae Jang “ charging automation for Electric vehicles ”. IEEETrans. Pp1545-5955. 2018 [4]. Muhammad sifatual Alam Chowdhury, Al Mahmudur Rahman “ modelling and simulation of power system of battery, solar and fuel cell powered Hybrid electric Vehicles ”. IEEETrans. Pp978-1-5090-2906-08. 2016 [5]. Sushruthsadagopan, sudeepbanerji, priyankavedula, mohammedshabin“ A solar power systems for electric vehicles with maximum power point tracking for novel energy sharing ”. IEEETrans. Pp:978-1-4673-8922-8,.2016
Madhusudhan M, Mohankumar V "An Overview of Charging System in Electric Car" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.64-65 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/64-65.pdf
For the successful drilling of oil and gas drilling, the drilling fluids are essential materials. In the drilling applications, the most commonly used drilling fluids are water based fluids. Water-based fluids are the first fluids of choice for drilling applications because of their cost effective, environmental friendly and non-hazardous nature. However, these fluids are ineffective when dealing with water-sensitive shale that can lead to shale hydration, consequently wellbore instability is compromised. The geological occurrences which is water-sensitive may require oil-based and synthetic-based fluids. A proper formulation of oil-based drilling fluid can prevent water movement from the fluid into the shale occurrence. Despite its effectiveness, oil-based drilling fluid can give negative impact to environment when the pollutant is discharged and subsequently dispersed to the sea. The ester-based drilling fluids take attention as alternative fluids in the drilling applications of water-sensitive geological occurrences such as shale formations. They are a new class of materials used to provide safe and cost-effective technology for drilling oil and gas wells. Their enhanced drilling performance decreases drilling time and provides advantaged safety, human health, and, in some cases, environmental performance above diesel oil fluids.
- Page(s): 66-71
- Date of Publication: 09 January 2020
- Ahmed Wedam AhmedAGH-University of Science and Technology, Faculty of Mining Survey and Environmental Engineering, Department of Mining Areas Protection, Geoinformatic and Mining Surveying, Cracow, Poland
- Ekrem KalkanAtaturk University, Oltu Earth Sciences Faculty, Geological Engineering Department, Erzurum, Turkey
References
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Composition and properties of drilling and completion fluids. Gulf Professional Publishing. [20] Cobby, G.L., Craddock, R.J., 1999. Western Australian Government Decision-Making Criteria Involved in The Regulation of Drilling Fluids Offshore. The APPEA Journal 39, 600-605. [21] Dhiman, S.A., 2012. Rheological Properties & Corrosion Characteristics of Drilling Mud Additives. M.Sc, Dalhouse University. [22] El Fakharany, T., Geliel, A.A., Salhin, H., 2017b. Formulating Environmentally Friendly Oil- Base Mud using Soybean Oil. International Advanced Research Journal in Science, Engineering and Technology 4 (7), 57-61. [23] El Fakharany, T., Khaled, R., Mahmoud, A., 2017a. Formulating Environmentally Friendly Oil- Base Mud using Jatropha Oil. IARJSET, Vol. 4, Issue 1, January 2017 [24] Finger, J., Blankenship, D., 2010. Handbook of best practices for geothermal. Sandia National Laboratories, report SAND2010-6048, 84 pp. [25] Fink, J.K., 2012. 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[36] Mohamed, A., Basfar, S., Elkatatny, S., Al-Majed, A., 2019. Prevention of Barite Sag in Oil-Based Drilling Fluids Using a Mixture of Barite and Ilmenite as Weighting Material. Sustainability 11, 5617 (1-14). [37] Mohamed, A.K., Elkatatny, S.A., Mahmoud, M.A., Shawabkeh, R.A., Al-Majed, A.A., 2017. The Evaluation of Micronized Barite as a Weighting Material for Completing HPHT Wells. In Proceedings of the SPE Middle East Oil & Gas Show and Conference, Manama, Bahrain, 6-9 March 2017, Paper SPE-183768-MS. [38] Mokhtari, M., Ozbayoglu, M.E., 2010. Laboratory investigation on gelation behavior of xanthan crosslinked with borate intended to combat lost circulation. In: SPE production and operations conference Exhibition, Tunis, Tunisia. Society of Petroleum Engineers. [39] Moloney, N., 1995. Archaeology. Oxford University Press, p.146. [40] Mukherjee, S., 2013. The Science of Clays, Applications in Industry, Engineering and Environment. 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Ahmed Wedam Ahmed, Ekrem Kalkan "Drilling Fluids; Types, Formation Choice and Environmental Impact" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.66-71 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/66-71.pdf
For the geologists investigating the planet’s structure, composition and changes over time, it’s not always practical to visit a location for field observation. The application of remote sensing in geology means scientists can use electromagnetic radiation to collect detailed information from all over the world. One of the most promising systems for use by earth scientists for applications of the Earth Sciences is the GIS. It, known as a computer based system for mapping and analyzing spatial data, is a tool for working with geographic information. In this study, the GIS has been used to investigate the geological characteristics of Sanliurfa, SE Turkey and its surrounding. By using the GIS, the boundaries of formations belonging to different groups and old and new formations within the current sediments were obtained and the geological map of the region was prepared within the scope of the study. Geological units of the study area consist of Kampanian-Early Marasthihtien age Bozova formation, Eosene-Oligocene Gaziantep formation, Early Miosene age Fırat formation, Late Miosene-Early Pilyosene age Siverek Group, Pilyo-Quaternary deposits and alluvium sediments.
- Page(s): 72-76
- Date of Publication: 09 January 2020
- Ahmet Ekmen Ataturk University, Oltu Earth Sciences Faculty, Geological Engineering Department, Erzurum, Turkey
- Ekrem Kalkan Ataturk University, Oltu Earth Sciences Faculty, Geological Engineering Department, Erzurum, Turkey
References
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Ahmet Ekmen, Ekrem Kalkan "Investigation of Geological Characteristics of Şanliurfa, SE Turkey by Using GIS" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.72-76 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/72-76.pdf
- Quality is usually one of the major specifications of any given software project. Of the eighteen key process areas (KPA’s) spread across the five maturity levels of the Software Engineering Institute Capability Maturity Model Integration (SEI CMMI), Software Quality Assurance (SQA) and Software Quality Management (SQM) are the two key process areas that respectively look into the assurance and management of software quality. While SQMinvolves defining quality goals for the software products, establishing plans to achieve these goals, monitoring and adjusting the software plans to satisfy the needs and desires of the customer and end user, the purpose of SQA is to provide management with appropriate visibility into the process being used by the software project and of the products being built,. This paper discusses SQA and SQM practices in the Nigerian software industry. Issues discussed include the level and extent of implementation of the SQA and SQM KPA’s in the Nigerian software industry. The study revealed a relatively low level of performance of these KPA’s and suggested measures for improvement.
- Page(s):77-83
- Date of Publication: 10 January 2020
- Moses Kehinde Aregbesola Department of Mathematical and Computing Sciences, Kola Daisi University, Ibadan, Nigeria
- Ugochukwu Onwudebelu Department of Mathematical and Computing Sciences, Kola Daisi University, Ibadan, Nigeria
References
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Moses Kehinde Aregbesola and Ugochukwu Onwudebelu "Experimental Evaluation of Software Quality Management and Assurance in the Nigerian Software Industry" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.77-83 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/77-83.pdf
There is an alarming rate of data leakage in most social networks and not every social media user takes data security seriously. A major challenge faced by most Social Media users is the problem of data leakage. There are basically two major data leakage problems, they include Malicious Data Leakage (MDL) and Inadvertent Data Leakage (IDL) respectively. Despite the various improvements of data security by different encryption algorithms, there are still open problems and occurrences of data leakages on Social Media. In this work, we developed an improved Ant Bee Colony (ABC) algorithm for Data Leakage Detector for Social Media Users. We adopted Rapid Application Development Methodology (RAD) in this approach. We implemented with Hypertext Preprocessor (PHP) programming language using Ant Bee Colony Algorithm and MySQL Relational Database Management System as backend. We compared the existing system and proposed system of the Ant Bee Colony. The results obtained show that the performance accuracy is more efficient.
- Page(s): 84-88
- Date of Publication: 13 January 2020
- Blessing C. OkoroDepartment of Information Technology, National Open University of Nigeria, Nigeria
- Friday E. OnuoduDepartment of Computer Science, University of Port Harcourt, Nigeria
References
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Blessing C. Okoro, Friday E. Onuodu "Data Leakage Detector for Social Media Users Using an Improved Ant Bee Colony (ABC) Algorithm" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.84-88 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/84-88.pdf
Microstrip patch antennas (MPA) have become more popular in portable wireless communication systems. These antennas are light in weight, low profile, and support wideband and low in the cost of fabrication. Wireless communication deals with antenna performances, which has led to several researches on dual band and wideband antennas in which these antennas are embedded into an RF printed circuit board, so they cannot be seen from the device point of view.The L-network method was used for impedance matchingby introducing a separate network that can match the desired resistance known as the characteristic impedance and by perturbing the rectangular patch increases current path length giving rise to second order mode. The Electromagnetic full wave simulator software Antenna Design System (ADS) is used to simulate the patch antenna with parameters to be observed such as the return loss and voltage standing wave ratio (VSWR).
- Page(s):89-95
- Date of Publication: 15 January 2020
- Fubara Edmund Alfred-Abam College of Engineering, Department of Electrical & Electronics Engineering BELLS University of Technology Nigeria, Km 8, Idiroko Road, Ota, Ogun State, Nigeria
- Raifu Isola Salawu College of Engineering, Department of Electrical & Electronics Engineering BELLS University of Technology Nigeria, Km 8, Idiroko Road, Ota, Ogun State, Nigeria
References
[1]. Shera P. Singh, Ashish Singh, Deepak Upadhyay, Sunilkumar Pal, Mahesh Munde.2016. Design and Fabrication of Microstrip Antenna at 2.4 GHz for WLAN application using HFSS, IOSR Journal of Electronics and Communication Engineering: 2278-8735. [2]. Aishwarya Sudarsan, Apeksha Prabhu. 2017. Design and Development of Microstrip Patch Antenna. International Journals of Antennas, Vol.3, No.1/2/3. [3]. Constantine A. Balanis. 2005. Antenna Theory, Analysis and Design. Third Edition, John Wiley & Sons, Inc. pp 811-813. [4]. IEEE Transactions on Antennas and Propagation, Vols. AP-17, No. 3, May 1969; Vol. AP-22, No. 1, January 1974; and Vol. AP-31, No. 6, Part II, November 1983. [5]. Constantine A. Balance, Antenna Theory Analysis and Design, third edition, 2005. John Wiley & Sons Ltd. [6]. Sonia Sharma, C.C Tripathi and Rahul Rishi, Impedance Matching Technique for Microstrip Patch Antenna. International Journal of Science and Technology, 2017. [7]. Thomas A. Milligan, Modern Antenna Design, second edition, 2005. John Wiley & Sons, Inc. [8]. Yi Huang, Kevin Boyle, Antennas from Theory to Practice, 1st edition, 2008. John Wiley & Sons Ltd. [9]. Garima, Amanpreet Kaur and Rajesh Khanna, Dual- and Triple- Band U-Slot Microstrip Patch Antenna for WLAN Applications", International Journal of Advanced Research in Computer and Communication Engineering, Vol. 2, No. 5, 2013. [10]. I.V.S Rama Sastry, Dr. K. Jaya Sankar. 2014. Proximity Coupled Rectangular Microstrip Antenna with X slot for WLAN Application. Global Journal of Researches in Engineering: For Electrical and Electronics engineering, vol.14: 2249-4596. [11]. Rajan Tiwari, Surya Paratap, Rahul Yadav, Parvesh Kumar and Virendra Kumar Rao, "Dual Band T Slot Rectangular Microstrip Antenna", International Journal of Emerging Technology and Advanced Engineering, Vol. 4, No. 5, 2014. [12]. C.A. Balanis, Antenna Theory: Analysis and Design, John Wiley & sons, Hoboken, NJ, USA 3rd edition 2005. [13]. Thomas A. Milligan. 2005. Modern Antenna Design, Second Edition, John Wiley & Sons, Inc. p 222.
Fubara Edmund Alfred-Abam, Raifu Isola Salawu "Optimization of the Dual Band Microstrip Patch AntennaVia Perturbation and L-network Matching for WLAN Application" International Journal of Latest Technology in Engineering, Management & Applied Science-IJLTEMAS vol.8 issue 12, December 2019, pp.89-95 URL: www.ijltemas.in/DigitalLibrary/Vol.8Issue12/89-95.pdf