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EFFECT OF SECOND SOUND ON THE ONSET OF RAYLEIGH-B??NARD-MARANGONI MAGNETO CONVECTION
The effects resulting from the substitution of the classical Fourier law by the non-classical Maxwell-Cattaneo law in Rayleigh-B??nard-Marangoni convection in an electrically conducting Newtonian fluid are studied using the Galerkin technique. In the case of Rayleigh??B??nard convection, the eigenvalue is obtained for free-free, rigid-free and rigid-rigid velocity boundary combinations with isothermal and adiabatic boundaries. In the case of Marangoni and Rayleigh-B??nard-Marangoni convection the eigenvalues are obtained for an upper free / adiabatic and a lower rigid / isothermal boundaries. A linear stability analysis is performed. The influence of various parameters on the onset of convection has been analyzed. The classical approach predicts an infinite speed for the propagation of heat. The present non-classical theory involves a wave type heat transport (SECOND SOUND) and does not suffer from the physically unacceptable drawback of infinite heat propagation speed. It is found that the results are noteworthy at short times and the critical eigenvalues are less than the classical ones. -
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Effect of social performance on sustainability of microfinance institutions
Microfinance is one of the sustainable business models with a double bottom line of financial and social relevance in the turf of development. Microfinance was recognized as a development tool that enhanced income and the standard of living of the marginalized through a sustainable business model. newlineThe concept of social performance,financial performance in microfinance institutions, and the trend of commercialization resulted in understanding the effect of social performance on the sustainability of microfinance institutions. newlineThe effect of social performance on the sustainability of microfinance institutions was quantified using CERISE (Committee of Exchanges of Reflection and Information on Systems of Savings Credit) and Social Performance Indicator (SPI) tool. Financial performance of the microfinance institutions were analyzed from 6 years audited financials of the microfinance institutions (Financial years 2009 2010 to 2014 2015),and various ratios were calculated from the audited financials and gathered information. newlineRBI-NBFC-MFIs directions resulted in reductions in the portfolio yield, portfolio risk, personal expenses, administration and other expenses. Portfolio yield was 31.12% in the financial year 2010 2011, which reduced to 22.45% in the financial year 2013 2014. Portfolio risk was 2.11% in the financial year 2010 2011, which reduced to 0.24% in the financial year 2014 2015. Personal expense was 10.46% in the financial year 2010 2011, which reduced to 5.46% in the financial year 2014 2015. Administration and other expense was 2.95 in the year 2014 15. Even though there was reduction in the portfolio yield, after implementing RBI-NBFC-MFI directions all the NBFC-MFIs of the study were sustainable. newlineThe scores of social performance of NBFC-MFIs depict that NBFC-MFIs adopted social performance initiatives in the business operations and that there are areas for improvement. -
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Effect of temperature modulation on Rayleigh-Benard convection in a rotating layer of a ferromagnetic fluid
The stability of a rotating horizontal layer of ferromagnetic fluid heated from below is examined when, in addition to a steady temperature difference between the walls of the layer, a time-dependent sinusoidal perturbation is applied to the wall temperatures. Only infinitesimal disturbances are considered. The effects of the oscillating temperature field are treated by a perturbation expansion in powers of the amplitude of the applied field. The onset criterion is derived when the condition for the principle of exchange of stabilities is valid. The shift in the critical Rayleigh number is calculated as a function of the frequency of modulation, magnetic parameters, Taylor number and Prandtl number. The effect of various parameters is found to be significant for moderate values of the frequency of modulation. It is shown that, when the thermal excitation is symmetric, supercritical motion is more pronounced for low Prandtl number ferro fluids. Further, for the case in which only the bottom wall temperature is modulated, the effect of rotation is to stabilize the system at low frequencies and the opposite is true for moderately large frequencies. The problem throws light on external means of controlling convection in ferromagnetic fluid applications. -
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Effect of Various Double-Frequency Modulations on Rayleigh-Benard Convection
Rayleigh-Bard convection in Newtonian fluid under different types of modulations are studied in this thesis by replacing the single frequency modulations with two frequency modulations with different amplitude and frequency. Linear and non-linear analysis of Rayleigh-Benard convection is considered under two-frequency gravity, rotation, temperature, magnetic field and internal heat generation modulation. The sixteen combinations of sinusoidal (trigonometric sine) and non-sinusoidal (square, triangular, sawtooth) wave forms of different modulations are considered to study the impact of modulations on the onset of convection and heat transport. The expressions for unmodulated Rayleigh number and correction Rayleigh number in the linear case are obtained from linearized Lorentz model using Venezian approach. To study the impact of different types of modulations and wave forms on the heat transport, the expression for the Nusselt number is obtained by solving the non-linear Lorentz model numerically. From the study it is found that the two-frequency modulations make the system more stable compare to no-modulation and single-frequency modulations. The mixing angle of the two frequency plays major role in deciding the stability of the system. The results pertaining to no-modulation and single frequency are obtained as the limiting cases. Onset of Rayleigh-Bard Convection and Heat Transfer under Two-frequency newlineRotation Modulation The study investigates the effect of sixteen sinusoidal (sine) and non-sinusoidal combinations (square, triangular, sawtooth) of time-periodic Coriolis force (rotation modulation) on Rayleigh-Bard convection (RBC) in a Newtonian liquid. The consideration captures the potential effects of two-frequency rotation modulation on stability, newlinespecifically the onset of convection and the amount of heat transfer in the system simultaneously. -
Effective Testing: A case study approach for improving test efficiency
The study presented in this thesis investigates the methods for improving the software test efficiency. Test efficiency measures the cost-effectiveness of a test organisation and it is measured by dividing the number of defects found in a test by the effort needed to perform the test. A review of the literature suggests that software test efficiency improvement depends on direct and indirect success factors like test process, test management, test tools, test object delimitation, test case determination, test infrastructure, configuration management, release management etc. This thesis was a case study approach for improving the test efficiency of an existing test setup in a database environment. Most of the thesis work followed an action based research approach by giving importance to the test setup. Work started with an analysis of the initial test environment, identified the issues and improvement areas in existing test setup and given an implementation proposal for the identified problems. Based on the proposal, team implemented the solutions, which lead to a test environment containing number of actions like automation using standard framework, risk based testing, parallel execution, modularization, avoiding code redundancy and proper test management. The results of the case study suggest that the software products that has multiple releases should seriously consider the test improvement factors like regression environment, risk based testing, light weight test automation etc., in the initial stages of the testing. This will lead to cost savings, quality, flexibility and higher productivity. The investigation further identifies the issues in test management and introduced new method called test point method for proper test execution tracking. Based on the implementation results and their discussions, this study presents a new approach and practical guidelines for improving test efficiency of a software test project. IBM has recognised this case study by giving eminence and excellence award for saving one person year of testing effort in their indexing tool test environment. -
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Effectiveness of adjuvant psychological therapy on alexithymia fatigue and affective dimensions among women with breast cancer
Psychological aspects in women with breast cancer are many. Among them are those related to what patients go through at different phases of treatment such as newlinediagnosis, pre and post-surgery, chemotherapy and radiotherapy. Women with breast cancer experience psychological repercussions which are specific to them. Some of them are poor body image, self-depreciation, weight changes and hair loss can be distressing to women with breast cancer. newlineThe underlying cause could be a deficit in emotional processing and affect regulation. This could lead to an inability in verbalising and identifying feelings newlinewhich is known as alexithymia. Closely related is the concept of fatigue which is newlinesubjective and tiredness which could last beyond treatments related to cancer. An newlineoverriding concept which could explain and understand these concepts is affect and newlinemood. Towards this end the objective of the study was to examine the efficacy of adjuvant psychological therapy in breast cancer in terms of alexithymia, fatigue, newlinedepression, anxiety, stress and positive and negative affect. newlineThe study also explored if there was an association among alexithymia, fatigue, depression, anxiety, stress and negative affect. The study consisted of 20 patients in the intervention and control groups each. newlineThey were administered the following scales namely, Toronto Alexithymia Scale (TAS-20), Checklist of Individual Strength, Positive and Negative Affect Scale and Depression, Anxiety and Stress Scale. Towards the end of the sessions, they were administered Revised Sessions Reactions Scale. Adjuvant Psychological Therapy is a therapy tailor made for those with cancer which includes both cognitive and behavioral techniques. The results indicated that among the subscales and total alexithymia scores, newlinethere were statistically significant differences across three time-frames in the newlineintervention group. -
Effectiveness of anti-smoking PSAa: A comparative study /
The purpose of the study is to find out whether anti-smoking Public Service Advertisements are well strategized attempts to create and spread awareness about a public issue that could affect deeply seated public attitudes and behaviour. The study also highlights the ways in which anti-smoking PSAs are produced in different parts of the world and how it has brought changes in the public behaviour. -
Effectiveness of Awareness Program in Raising Teachers Awareness about Learning Disabilities
??Learning Disabilities is a term associated with difficulties in reading, writing, doing Maths and motor coordination. Awareness about learning disabilities is required for early identification and further remediation. A learning disability in a child can be identified as early as in toddler stage. Teachers are the first ones , usually to suspect a learning disability in a child. For appropriate observation and referrals for further assessment , a teacher should be aware of the various characteristics of learning disabilities which differs from individual to individual. Literature says that there is need of raising the awareness of teachers about learning disabilities and its various etiological factors. Awareness program could help in enhancing the knowledge of teachers in this regard. The current study was organised with an aim of conducting an awareness program to raise teachers knowledge about learning disabilities. 20 teachers, teaching in a Government school in Thiruvananthapuram, Kerala was selected for the study. A pre experimental study pre post without control was designed. The intervention package was framed with comprehensive information about the concept, characteristics, kinds, signs, symptoms, strategies and guidelines for early identification. The awareness of the teachers prior to and post intervention was assessed using a semi structured questionnaire. The effectiveness of the awareness program was gauged using statistical analysis. The findings of the study proved that the knowledge of the teachers about learning disabilities has significantly increased post intervention. The knowledge level was shifted from moderate level, prior to intervention to high level post intervention. The feedback from the teachers ascertained that the program was very useful and interesting. Awareness programs of similar kind are recommended in a broader spectrum. -
EFFECTIVENESS OF BILLBOARD ADVERTISING IN REAL-ESTATE AND AUTOMOBILE ADVERTISING
Advertising is one of the important types of communication in todays world and it has become an indispensable for both the consumer and the producer of it. Advertising plays an important role in the integrated marketing communication. In todays information age it is necessary for an organization or institution make the public aware of their goods and services and advertising acts as tool to serve this purpose. There are various types of advertising such as Out-door Advertising, In-door advertising, Non-product advertising, Radio advertising, Television advertising, National advertising, International advertising, Retail advertising, classified advertising and local advertising to name a few. Outdoor advertising is less touched subject within the field of advertising. Though there have been some research on the creative execution, improving attention to the billboards there is not much attention given to examine the effectiveness of billboard advertising. Billboards as a medium of advertising have been used by the advertisers in various parts of India. It is normally situated along the traffic prone roads, main streets, commercial centres, on flyovers and on highways. The purpose of it is to make people (pedestrians, drivers, and passengers) aware of the products and services which are available in the market and which intern leads to the buying and selling between consumer and manufacturer. In todays world the outdoor advertising, especially billboard advertisements are used extensively by the Real-estate and Automobile advertisers. It is important to know are people noticing these billboard advertisements and how it is influencing the people in their purchase decision making process of these Goods being advertised. It is also important to know why do Real-estate and Automobile advertisers prefer advertising on billboards rather than other media such as television, Radio and Print. -
Effectiveness of Classroom Interaction on English Language Production in Tamil Medium Schools in Coimbatore
The research study emphasized the importance of classroom interaction (CI) in English language classes for language learning among second language learners of English based on the interaction approach to language learning. The present study attempted to address the problem of students entering the tertiary level of education with dissimilar levels of English language proficiency due to the inequity in English language education among various types of schools in India. newlineThe main purpose of the study was to facilitate classroom interaction (CI) for newlineEnglish language learning in the context through the development of an Interactive Hour module and thereby providing opportunities for disadvantaged learners to be exposed to a graded target language and enabling them to produce the target language inside classroom spaces with corrective feedback on language use. The research was carried out in two phases using mixed methods research design in government-aided Tamil medium schools in the district of Coimbatore, newlineTamil Nadu, India. Phase I of the study, which was majorly qualitative in nature, was conducted to establish the need for the study in the context. It was aimed to Systematically present the actual teaching and learning scenario of English language classrooms in government-aided schools in Tamil Nadu in comparison to what is mentioned newlinein the national and state education policy notes and official documents related to newlineEnglish language teaching. The major objectives of phase I of the study were to newlineunderstand the pedagogic goals of English language teachers and their classroom newlineinteractional awareness and to observe and evaluate the nature and extent of classroom interaction in English language classes in the context of language policy and planning. -
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Effectiveness of emotion recognition training on social and emotional skills in young children with autism spectrum disorder
The rising prevalence of Autism Spectrum Disorders necessitates the determination of novel intervention methods for its management. Since deficits in social skills are one of the most prominent features in ASD, efficient interventions for improving social skills become necessary. Several studies suggest a strong relationship between emotional skills and the acquisition of social skills. Objectives: The objective of this study was to find out the effectiveness of emotion recognition training on the social and emotional skills of children with ASD by obtaining quantitative results from the participants after emotion recognition training and then following up in-depth through
a qualitative thematic analysis after interview with selected parents of the participants. Method: In the quantitative phase, a sample of ten children within three to six years of age who are diagnosed with ASD were selected for the study. The emotion recognition training followed the modified and adapted version of the hands-on activities from the ‘Let’s Face It’ curriculum which was validated after a pilot study. Each child was given 20 to 30 sessions of training. The participants were assessed for their social skills using VABS-3 and emotional skills were assessed using CDDC, before, during, and after the training. The qualitative phase involved an interview with the parent using a semi-structured guide. Results: The quantitative and qualitative results indicated that there is a significant difference in the social skills and emotional skills of the children after the training. The results also showed a sufficient generalization of the skills achieved. Incidental finding revealed reduction of problem behaviours. Conclusions: The study clearly shows that emotion recognition training is effective in improving social and emotional skills in children with ASD. -
Effectiveness of emotion recognition tranining on socail and emotional skills in young children with autism spectrum disorder
The rising prevalence of Autism Spectrum Disorders necessitates the determination of newlinenovel intervention methods for its management. Since deficits in social skills are one of the most prominent features in ASD, efficient interventions for improving social skills become necessary. Several studies suggest a strong relationship between newlineemotional skills and the acquisition of social skills. Objectives: The objective of this study was to find out the effectiveness of emotion recognition training on the social newlineand emotional skills of children with ASD by obtaining quantitative results from the newlineparticipants after emotion recognition training and then following up in-depth through a qualitative thematic analysis after interview with selected parents of the participants. Method: In the quantitative phase, a sample of ten children within three to six years of age who are diagnosed with ASD were selected for the study. The emotion newlinerecognition training followed the modified and adapted version of the hands-on newlineactivities from the Let s Face It curriculum which was validated after a pilot study. Each child was given 20 to 30 sessions of training. The participants were assessed for their social skills using VABS-3 and emotional skills were assessed using CDDC, newlinebefore, during, and after the training. The qualitative phase involved an interview with newlinethe parent using a semi-structured guide. Results: The quantitative and qualitative newlineresults indicated that there is a significant difference in the social skills and emotional newlineskills of the children after the training. The results also showed a sufficient newlinegeneralization of the skills achieved. Incidental finding revealed reduction of problem behaviours. Conclusions: The study clearly shows that emotion recognition training is effective in improving social and emotional skills in children with ASD.