Browse Items (667 total)
Sort by:
-
Development of Family Intervention for Management of Psychogenic Seizures : A Qualitative Study
Background: In the somatoform and dissociative spectrum, family functioning has been poorly researched based on the search in PubMed, Google Scholar, Science Direct, PROQUEST, EBSCO and Cochrane Reviews. In Psychogenic Non-Epileptic Seizures (PNES) primarily, family functioning has been understood as a comparison between Epileptic Seizures (ES) and PNES. However, an attempt to study different aspects of family functioning and its ability to influence the newlinemanifestation of the disorder is yet to be made. Methods: This study attempted to understand different family functions qualitatively by interviewing both the patients and family members of these patients. Nine patients and seven families of these patients participated in the study. Braun and Clarke s thematic model was used. Latent thematic analysis was used to analyse the data. Based on the analysis, major and sub-themes were used to develop family intervention and a family psychoeducational model. Both were developed with the help of the GUIDED Checklist to report health interventions; the TIDieR format and Delphi newlinetechnique was used to collect the expert opinion of the developed intervention. newlineResults: Two sets of results and analyses were compiled with qualitative data, that is, for patients and families. Major themes and sub-themes were developed for both, including family interaction, attachment, poor communication, structural-systemic aspects, distressful family aspects, negative newlineexpressed emotions, cultural aspects, nature of the illness, family s views of the illness and coping mechanisms. These themes indicated the importance of family functioning and its impact on the manifestation of the disorder. newlineConclusion: The researcher concludes that family dysfunction can impact the manifestation of the disorder. Hence, an additional family intervention or psychoeducation is essential for holistic newlinetreatment. -
Role of Green Human Resource Management Practices on Sustainable Performance of the Service Sector Organizations
The prominence revolution took place in the 1980s, and then the Green HRM practises movement blew over the sustainable development literature in the 1990s. This represents an excellent practice because it newlineincorporates sustainable development principles into the operational processes newlineof the human resources department. According to Mishra (2017), Green HRM is a tactical instrument for arranging human resource competences and promoting ideas that motivate businesses to embrace sustainable strategies. newlineThe term human resource management (HRM) is used to describe a set of practices, procedures, and methods that are focused on managing and optimizing the performance of personnel within a business, thereby providing the organization with a competitive advantage. Despite the fact that green human resource management has grown to be a major source of concern, India has only relatively handful of first-hand studies done in this area. While conventional HRM concentrates on functions to provide an organisation a competitive edge, green HRM places an emphasis on the capture and retention of green efforts to meet corporate objectives. newlineGreen HRM in India is plagued by a variety of issues. The study has chosen a few traits from the research at hand that may be utilised to create Green HRM practices for sustainable development. It stands to reason for contemporary businesses to take environmental responsibility seriously (Jackson, Renwick, Jabbour and Camen, 2011). Numerous studies show that environmental newlineinitiatives increase production and provide companies a competitive edge (Bombiak and Marciniuk-Kluska, 2018). Although organizational solutions quotmoved beyond pollution control and the mitigation of environmental degradationquot, Saeed, Jun, Nubuor, Priyankara and Jayasuriya (2018) have highlighted its significance in the New Millennium Era. -
Topologies Emanating From Graphs
A topology on a set is a collection of its subsets, including the set itself and the empty set, which is closed under union and fnite intersections. This dissertation introduces the notions such as graph topology, spanning graph topology, generalised graph topology, and generalised spanning graph topology by considering subgraphs and spanning subgraphs of a graph. Analogous to the set-theoretic notion, a graph topology is a collection of subgraphs of a given graph, including the null graph K0 and the graph itself, that is closed under newlineany union and any intersection. At the same time, a spanning graph topology of a graph is a collection of spanning subgraphs, including the spanning empty graph Nn, where n is the order of the graph and the graph G, which is closed under any union and any intersection. The topological concepts such as open sets, closed sets, base, subbase, neighbourhood, interior, subspace, and connectedness of spaces are extended to graph topology and spanning graph topology. In order to study the closed graphs in the above-mentioned graph topologies, two new graph complements are introduced in these graph topologies, such as decomposition and neighbourhood complements, to defne decomposition closed newlineand neighbourhood closed graphs. The decomposition complement is defned with respect to the edge set and the neighbourhood complement with respect to the vertex set. Since all the members of a spanning graph topology have the same vertex set, the neighbourhood closed graphs are described in terms of the edge set. The notion and characteristics of subspaces of both these graph topologies are defned, and the properties of closed graphs in these subspaces are also studied. Connectedness in topology holds a prominent role and applications in various felds of mathematics. The idea of connectedness is extended newlineto these graph topologies, and the same is characterised in the context of graph newlinetopology. -
Green Synthesis of Nanoparticles Leading to the Biocontrol of Aedes Aegypti
Mosquitoes are the potential vectors of many diseases such as malaria, dengue, brain newlinefever, etc. There is a need to check the proliferation of the population of vector newlinemosquitoes to reduce vector-borne diseases by appropriate control methods. Nanotechnology, a promising field of research, opens up in the present decade and is expected to give major impulses to technical innovations. Over the past few decades, nanoparticles of noble metals such as silver exhibited significantly distinct physical, chemical and biological properties. Presently, there is a need for increased efforts to develop newer and more effective methods to control mosquito vectors. Due to different technical and operational reasons, the existing chemical and biological methods are not as effective as in the earlier period. Therefore, this study is designed to extract silver newlinenanoparticles from plant, fungal and bacterial species and assess their impact on the third and fourth-instar mosquito larvae and the adult mosquito (Aedes spp). The study has formulated a gel material that is composed of nanomaterials that exhibited promising properties to develop a nano gel product. The study is designed in a way to have an impact on the control of mosquito larvae using biologically synthesized nanoparticle formulations. Green synthesis is expected to show a higher yield of nano products that can be formulated in various forms to standardize the biocontrol of mosquito species. Bioinformatic studies revealed the good binding potential of the extracted bio compounds against the juvenile hormone binding proteins in A. aegypti. The study deduced meaningful outcomes that can benefit the environment by controlling the mosquito population and thereby reducing disease transmission in many developing countries. -
Topological Indices Based on Distance Labeling
This thesis explores the prospect of combining two prime branches of graph theory, newlineviz., topological indices and graph labeling, specifcally radio labeling. The majority newlineof the work includes the topological radio indices of graphs and their properties. Topological indices are numerical values associated with graphs and invariant with graph isomorphisms. Apart from Topological Radio Indices, it provides some additions to the eccentricity-based topological indices. newlineRadio labeling or radio coloring, c, is assigned to a graph G such that the label difference between any two vertices must be greater than diam(G)+ 1 and#8722; d(u,v). Optimum radio labeling is the foundation for defning Topological radio indices. Labeling whose span is the radio number of the graph and which leads to the minimum value of the index newlineis considered the optimum radio labeling. The topological radio indices and coindices newlineare defned and are found out for some special classes of graphs, including gear graphs, newlinewheel graphs, and star graphs. The bounds for the frst, second and third Zagreb radio indices have been established and characterized for the classes of graphs for which the bound is sharp. Furthermore, newlinespecifc relationships between Zagreb radio indices and coindices are established concerning different parameters of the graph. newlineThe idea of consecutive radio labeling is explicitly studied. We have characterized the newlinegraphs with diameter 2 admitting consecutive radio labeling. We have studied the properties of graphs admitting consecutive radio labeling and stated the necessary and suffcient conditions for a graph to follow consecutive radio labeling. The study extended to eccentricity-based topological indices, viz., the forgotten eccentricity indices. The maximum d(u,v) for all v in V(G) is the eccentricity of the vertex u in G. This work also investigates eccentricity-based coindices and some of their properties. newlineApart from this, some uniquely radio colorable graphs are examined and characterized. -
Perceived Morbidity, Health Seeking Behaviour and Healthcare Utilisation among Inter-State Women Migrant Workers in Kerala
Internal migrants in India are estimated to be 37% of the total population with Kerala estimated to host over 25 lakhs of internal migrants. Migration, both internal and international can influence a country or region s socio-economic development. The interrelation between health and migration is highlighted in the Sustainable Development Goals where health is determined as an indicator of people-centred, rights-based, inclusive, and equitable development . Though migrants as such are a vulnerable population, the gender experience of migration differs, as women migrants often face triple discrimination of being a woman, unprotected worker and a migrant making them the most vulnerable within the migrant community. They are often overlooked while formulating schemes and policies depriving them of health and social security benefits. The present newlinestudy aims to understand the perceived morbidity, health seeking behaviours and healthcare utilization among Interstate Women Migrant Workers in Kerala. The sequential exploratory research design was employed to newlinecollect data from workers in the seafood processing and textile manufacturing sectors. The qualitative phase had two focus group discussions with 8 participants each and four in-depth interviews while the quantitative newlinephase had cross-sectional surveys with 300 respondents. The focus group discussion and in-depth interview paved the way for understanding the issues and concerns of the respondents regarding their health seeking newlinebehaviours and healthcare utilization as well as hinting at their attitude towards health in general. Themes were able to provide insight into the factors underlying healthcare utilization as well as provided suggestions from the respondents which could have policy implications. The quantitative data was elaborate and was able to address the various dimensions of health seeking and determine the factors influencing healthcare utilization among interstate women migrants in Kerala. -
Prevention of Child Sexual Abuse : A Protection Motivation Theory-Based Intervention for Mothers of Preadolescents
Child sexual abuse (CSA) is a growing concern in the world. Prevention of CSA in India is challenging due to deep rooted traditional values and beliefs. Sex and related matters newlineare difficult topics for parents to discuss. Lack of parental awareness leads to increased newlinerisk for CSA. Maternal care is the most influential aspect of child rearing and they need information and skills to educate children on sexual abuse. The literature review was based on Bloom s taxonomy for academic writing. The need for systematic and evidencebased approach in primary prevention was identified. The aim of this study was to test the efficacy of Protection Motivation Theory (PMT)-based psycho education program in enhancing mothers knowledge, attitude and sense of parental competence among mothers. An interactive mixed-method design embedding quantitative and qualitative methods selected 72 mothers as participants from Kannur, Kerala. Mothers aged between 30-40 years who had preadolescent children (8-12 years) were assigned to control and experimental group. A facilitator s psycho education manual was developed embedding PMT constructs for the intervention. The quantitative results indicated significant differences between the groups for CSA knowledge and attitude. The impact of the intervention was moderate to high. The qualitative results indicated the benefits of intervention. Mothers have overcome communication blocks, misconceptions regarding CSA education are cleared, are aware of risks and warning signs and are confident to deal with CSA disclosure. The involvement of mothers in the prevention program was found to be effective in this study. The findings of this study have important implications for developing theory- based interventions for CSA prevention. The application of systematic evidence-based interventions promotes active engagement of participants for applying the learnt skills effectively. The culturally sensitive issues like CSA needs more contextual understanding of the problems to find effective solutions. -
Dynamics of Newtonian Fluids and Nanofluids in Various Geometries
In this thesis, the boundary-layer flows of Newtonian fluids in different geometries newlineprimarily, a horizontal surface and a vertical surface. To account for the imperfections arising in realistic scenarios, we have considered a horizontal surface with undulations and a vertical surface with a non-uniform temperature distribution. Additionally, it is wellknown that to meet the cooling rate requirements in the industry, the thermal performance of ordinary heat transfer fluids is not suitable. The concept of insertion of nanometresized metallic particles in the fluid leads to an increase in the thermal conductivity of the newlineordinary base liquids. Therefore, to fully comprehend the affect of these nanoparticles on the onset of convection and fluid motions and to assess how the enhanced thermophysical newlineproperties may affect the heat transfer is another key objective of this research. newlineA Comparative Study of Thermo-convective Flows of a Newtonian Fluid over Three newlineHorizontal Undulated Surfaces in a Porous Medium In the first problem of this thesis, elaborated in Chapter 5, a comparison has been presented between the results of three thermoconvective flows of a Newtonian fluid over uniformly heated, undulated horizontal surfaces in a porous medium against the background of the results of a flat plate. The undulations are assumed to have sinusoidal, sawtooth, and triangular waveforms. At large surface amplitudes, secondary flow is observed in the cases newlineof sinusoidal and triangular waveforms, but not in the cases of a sawtooth surface and a newlineflat plate. The variation of the mean Nusselt number and mean skin friction with surface newlineamplitude and the Rayleigh number indicate that heat transfer and viscous friction at the boundary increase with individual and collective increases in the values of the amplitude and the Rayleigh number. The heat transfer and skin friction by the flat surface are much less than that of all three undulated surfaces. -
Heat and Mass Transfer Analysis of Newtonian and Non-Newtonian Nanofluids in The Presence of Motile Microorganisms
This dissertation deals with the analysis of heat and mass transfer in Newtonian and newlinenon-Newtonian nanoand#64258;uid in the presence of motile microorganisms. The major application of the and#64258;uids in heat and mass transfer process is its capability to conduct heat. Hence, the and#64258;uids act as a source that conducts heat and cools down the temperature of the appliance. Whereas, the capacity of heat conductance is low in case of regular and#64258;uids, hence the concept of nanoand#64258;uids was introduced whose thermal conductivity is more when compared to regular and#64258;uids. The high thermal conductivity of nanoparticles helps in conducting more heat and the property of and#64258;uid to and#64258;ow helps the nanoparticles to and#64258;ow all over the desired surface and conduct heat. During the process of nanoand#64258;uid and#64258;ow, the nanoparticles undergo random motion that is termed as Brownian motion and they also experience the thermophoretic force that causes the nanoparticles to move from hotter region to colder region. Further, the presence of nanoparticles would either result in sedimentation or formation a layer of nanoparticles over the surface. This layer of nanoparticles adhered to the surface creates corrosion. Hence, it is important to prevent the nanoparticles from forming its layer over the surface and also the sedimentation of nanoparticles must be avoided to have no blockages in the system. Hence in this regards, self propelled microorganisms newlineare allowed to swim in the nanoand#64258;uid which in turn constitutes bioconvection. Considering these assumptions, problems in this dissertation are modelled such that it deals with the analysis of bioconvection caused due to the swimming of microorganisms in the and#64258;ow newlineof nanoand#64258;uid. The mathematical models of the and#64258;ow, heat and mass transfer of Newtonian and non Newtonian nanoand#64258;uids are designed using the partial differential equations with various assumptions to achieve realistic results. -
Financial Capability and Decision Making Effects on Financial Wellbeing of Women in Community Based Organisations
Financial Social Work (FSW) is a multi-disciplinary interactive approach that deals with financially vulnerable populations financial issues/solutions. FSW deals with individual, family and community wellbeing by increasing access to good financial services, asset-building opportunities, financial education and guidance. The two concepts newlineunderlying FSW are financial capability and financial wellbeing. Financial capability is increasingly becoming a priority for policymakers, social workers, academicians and organisations of economic and social newlinesignificance. In India, limited studies are available for measuring the financial capability of Indian citizens. While literature suggests various studies on financial capability and financial wellbeing, the focus on their combined effect has been limited. The feminisation of poverty is an newlineessential topic when discussing the capability and wellbeing of women. This refers to the increasing tendency for those in poverty to be women and children due to the reasons such as economic conditions, demographic composition and government policy. Hence, it is relevant to consider newlinewomen as the focus point of the study. The present study measures women s financial capability and examines how demographic factors influence the same. The study also explores the impact of financial capability on the decision making ability and financial wellbeing of women associated with Community Based Organisations (CBOs). It further newlineexamines whether the decision making ability mediates between financial capability and financial wellbeing. Primary data was collected from the respondents through a structured questionnaire to identify and establish these aspects. In total, 1000 women who were associated with the CBOKudumbashree in the state of Kerala, India, identified through the multistage sampling technique, participated in the survey-based study. -
Discrimination and Coping of Old Settlers in Sikkim
The study was conducted to explore the existence and manifestation of discrimination in Sikkim. In the Indian context, race-based discrimination has been extensively studied from the point of view of the northeasterners residing in mainland India. An important reason for this is the differences in race, culture, language, and minority status of the northeasterners in mainland India. However, within the northeastern states all of the above mentioned aspects are reversed newlineand the minority is the mainland Indian community, race-based discrimination has not been studied. Sikkim was considered as the region for study as it is part of the sister states of the northeastern region and the Rajya Sabha Committee on Petitions has acknowledged that discrimination has been practiced in the state. An exploratory sequential mixed design was adopted for the newlinestudy. Eleven telephonic semi-structured interviews were conducted for the qualitative phase with members of the old settlers of Sikkim. A survey was conducted for the quantitative phase. Thematic analysis revealed two global theme, five organizing themes and 44 basic themes. Survey method revealed that 51% of old settlers felt discriminated daily in Sikkim. The results newlinerevealed that race based discrimination does exist in Sikkim with it being purported at newlineinstitutional and interpersonal levels. -
Facile Fabrication of Nano carbon Derivatives for Optical and Electro chemical Applications
From synthesis of novel materials to their end-use applications, the prime objective of the material science community is to address the burgeoning social issues across the world. Noxious emissions from fossil fuel combustion, increased incidence of skin cancer, drug misuse, and ever-increasing demand for energy are some of the global concerns that require urgent consideration. This drives a relentless quest for a multifunctional material with broad applicability that can directly and constructively impact the quality of life, environment, and economic progress. However, materials of this kind should embrace versatile characteristics, improved competency, plausibility, and lower cost. In light of this, the current doctoral research emphasizes the development of trailblazing graphene-based materials with manifold usages derived from a naturally abundant carbonaceous fossil fuel coke to discover scientific solutions to the aforesaid trials and tribulations. Fossil fuel coal, mainly used for energy purposes, is often discouraged from industrial and domestic consumption due to its contribution to global warming. Despite the fact that coal is a non-renewable resource and a source of greenhouse gas emissions, it is one of the world's bountiful carbon resources. Therefore, it can be exploited as a potent substitute for conventional graphite, enabling the extraction of value-added graphene derivatives along with the sustainable utilization of coal. However, the purity of the precursor is a vital criterion to guarantee the quality and supply of graphene materials. In this doctoral work, coal-coke with 99% carbon content was used for the production of high-quality oxidized multilayer graphene derivatives by employing an environmentally-benign synthesis technique. The obtained graphene structure exhibited a multi-emissive fluorescence property having emissions ranging from blue to green-yellow. In addition, it also possessed remarkable electrochemical performance, good rate capability, and durability, signifying its expediency in energy storage devices. In an attempt to further enhance the scope of as-synthesized coke-based graphene derivatives, heteroatoms such as nitrogen and phosphorus were introduced into the graphene lattice via substitutional doping. It was perceived that nitrogen doping impressively amended the photophysical properties, especially in terms of quantum yield and fluorescence lifetime. Therefore, the as-synthesized nitrogen-doped multilayer graphene derivative was used as a fluorescent biomarker for imaging melanoma skin cancer cells with the purpose of early detection. Wherein co-doping of nitrogen and phosphorus endorsed excellent electrochemical characteristics and sensing performance, owing to the synergistic effect from heteroatoms and the imparted structural corrugations. Thus, by utilizing the as-synthesized nitrogen, phosphorus co- doped heteroatom derivative, oxytocin, a high-risk abused drug, was electrochemically detected in an nM range and validated the possibility of real-time surveillance over its mishandling in edibles and biological models. The coke-based graphene derivatives were further refashioned to obtain optimum textural and surface chemistry characteristics beneficial for energy storage characteristics. Accordingly, simultaneous heteroatom-doping and activation of graphene derivative were achieved. The obtained sample had a high surface area, hierarchical porous structure, increased defect densities, and co-active heteroatom enriched graphene network, suggesting its potential as an electrode material for supercapacitor applications. It was observed that the as-synthesized simultaneously heteroatom-doped and activated samples demonstrated high capacitance value, appreciable cyclic stability, and lower charge-transfer resistance. Henceforth, such enhanced supercapacitive performance points toward the cradle-to-gate transformation of fossil fuel, i.e., the conversion of sluggish black coal to green energy. -
Synthesis of Carbon Containing Composites for Energy and Environmental Applications
The population has grown rapidly, resulting in increased energy consumption and environmental issues. Researchers are developing new materials with unique physical and chemical properties to tackle these challenges. This has led to a focus on exploring novel approaches to synthesize micro and nanomaterials for use in the energy and environmental sectors. In this study, carbon-containing catalysts were developed as photocatalysts, electrocatalysts for water splitting reactions, and electrode materials for supercapacitor application. To evaluate the physicochemical characteristics of these materials, various characterization methods were employed, including X-ray diffraction, newlineScanning Electron Microscopy, Energy Dispersive X-ray Spectrometry, X-Ray Photoelectron Spectroscopy, High-resolution Transmission electron microscopy, Fourier Transform Infrared Spectroscopy, Differential reflectance spectroscopy, Dynamic light scattering, and Thermogravimetric analysis. The electrochemical and photocatalytic studies of the prepared materials were carried out by optimizing the different parameters. The four chapters include newlineCr2AlC MAX Phase as the catalyst used for photocatalysis, bismuth ferrite/Cr2CTx MXene, cobalt ferrite/Cr2CTx MXene composites for supercapacitor and electrocatalytic water splitting, bismuth ferrite/graphitic carbon nitride/N-doped graphene quantum dots for supercapacitor application, and Cobalt ferrite/graphitic carbon nitride/N-doped graphene quantum dots for supercapacitor and newlineelectrocatalytic water splitting application. -
Selective Oxidation of Hetrocyclic Alcohols Using Carbon Based Modified Electrodes
Electro-organic synthesis has achieved great significance over the conventional synthesis routes due to its diverse features which includes the in-situ generation of reagents, replacement of harmful redox reagents, rapid response, and low energy consumption. The choice of reactants (heterocyclic alcohols) for the electrochemical oxidation is solely based on the applications of its corresponding aldehydes. Furthermore, 2-thiophene methanol, piperonyl alcohol, 5-methyl furfuryl alcohol and Tetrahydro furfuryl alcohol have been chosen as reactants of interest as their corresponding aldehydes 2-thiophene carboxaldehyde, piperonal, 5-methyl furfural and Tetrahydro furfural possess various synthetic applications such as production of newlinedyestuffs, perfumes, veterinary products, agrochemicals and pharmaceutical drugs. newlineCarbon based electrodes provide a versatile platform for catalysis reactions. newlineElectrocatalysts for the selective oxidation of heterocyclic alcohols are designed on newlineemploying diverse modifications on the carbon fiber paper (CFP) electrode. Such newlinemodifications have attracted researchers due to their exceptional selectivity, stability, newlineelectrical conductivity and lower charge transfer resistance. The modifications newlineemployed in the current study include immobilized laccase-based materials and newlinegraphitic carbon nitride-based composites. newlineThe physico-chemical properties of the fabricated electrodes were studied using newlinedifferent characterization techniques like Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray Spectrometry (EDS), X-Ray Photoelectron spectroscopy (XPS), Optical Profilometry (OP) and Fourier Transform Infrared Spectroscopy (FTIR). Electrochemical investigations were performed using Cyclic Voltammetry (CV), Chronoamperometry (CA) and Electrochemical Impedance Spectroscopy (EIS). Optimization of experimental conditions such as effect of pH and scan rate to understand the reaction mechanism were studied in detail. -
Investigations on the Design, Performance and Effect of Feed Mechanisms, Defected Ground Structures and Materials for Optimized Microstrip Antenna Array
Microstrip antenna exhibiting low-profle features such as and#64258;exible, lightweight and newlinelow production cost attracts majority of communication industries working the lower newlinepart of the microwave spectrum ranging from 1 GHz to 6 GHz. Also, the microwave integrated circuit technology enables the integration of feed systems and other microwave integrated circuits on the same substrate where the antenna is printed. However, single antenna topologies feature a number of drawbacks, including low gain, poor directivity, narrow bandwidth and limited coverage being low in profle. In the perspective of miniaturization, developments in wireless communication have had a signifcant impact on antenna or array design based on the gain, bandwidth and directivity requirements for specifc wireless applications. As a result, usage of single antenna is not considered appropriate for diversity reception, long-distance communication, signal-to-interference as well as signal-to-noise ratio maximization, and direction of arrival determination, interference rejection, and high power applications. A high-gain broadband antenna or array may be the good choice for outdoor line-of-sight access points to increase signal strength and coverage range. To meet these requirements the antenna designers either can use conventional antennas or rely on miniaturized antennas. When antenna arrays are built using such small antennas to enhance the above said parameters, suitable and compact feed networks are required to ft within the given space of the overall transmitter-receiver geometry. This research work addresses the challenges faced by antenna researchers in newlineminiaturization, maintenance of gain-bandwidth and high-directivity narrow-beam newlineradiation of microstrip antenna arrays, through an investigation made on the design, new mathematical modelling of feed mechanisms for arrays, their inand#64258;uence on 1D and 2D uniform and non-uniform arrays, and the performance enhancement by amalgamating proposed arrays with defected ground structures and metasurfaces. -
A Study on Upper Domatic Number and Its Variants in Graphs
For a graph G = (V, E), a vertex partition and#8673; = {V1, V2, . . . , Vk} is an upper domatic partition if Vi dominates Vj or Vj dominates Vi or both, for every Vi, Vj 2 and#8673;, whenever i 6= j. The upper domatic number D(G) is the maximum order of an upper domatic partition of G. This thesis consists of studies on upper domatic number and its variants in graphs. The bounds of D(G) in terms of order, size, !(G) and #(G) are established. The class of graphs with equal upper domatic newlinenumber and clique number is characterised. The relation between upper domatic number and minimum degree of the graph is explored. The case when the upper domatic number and domatic number are equal is investigated and the graphs for which D(G) and the domatic number d(G) coincide are characterised. Apart from the relation between the D(G) and other graph parameters, the upper domatic number of some special classes of graphs including unicyclic graphs, complement of cycles and powers of graphs is determined. Transitivity, Tr(G), a variant of upper domatic number is defined as the maximum number of sets in a vertex partition {V1, V2, . . . , Vk} such that Vi dominates Vj where 1 i lt j k. The results from the study on this concept include characterisation of graphs with transitivity at least k, exact values of transitivity of few classes of graphs, few upper bounds of transitivity of graphs, the transitivity of trees and an algorithm to determine the same. Along with this, the concept of total upper domatic number is introduced as a new variant of upper domatic number. The total upper domatic number is the maximum order of a total upper domatic partition of G which is an upper domatic partition such that the graph induced by each partite set does not contain any vertex of degree zero. Basic properties and bounds of upper domatic number in terms of order and maximum degree are discussed. Further, the total upper domatic number of some special classes of graphs is determined. -
The Impact of Workforce Diversity on Organizational Climate in the Banking Industry
Liberalization, privatization, and globalization have paved the way to open the economy and integrate new philosophies and ideologies into the organization. The banking organization and other MNCs had opted for the ethos of enhancing the diversity of working professionals with the adoption of LPG. The novel approach to workforce diversity and organizational climate in the banking industry is considered in this study. The relevance of workforce diversity and the formation of an organizational climate are emphasized in this research work. The study's goal was reached through a series of steps, such as reviewing relevant literature and creating an appropriate theoretical framework. These steps laid the groundwork for creating and finalising research tools, which were done with the help of experts in the field. The creation of instruments for evaluating diversity and organizational climate was the final phase in this process. The study was carried out by using stratified sampling method with the participation of 778 bank employees from public and private banks located in the geographical area of Bangalore. The study's outcome states that There is no significant relationship between workforce diversity and organizational climate in the banking industry is rejected; this can be interpreted as the better organizational climate is highly correlated with the employees attitude towards organizational diversity. It indicated the importance of inculcating diversity and a favourable attitude towards diversity in the banking sector for the smooth conduction of work. "There is a significant relationship between workforce diversity and organizational climate in the banking industry". "Workforce diversity significantly influences the variation in the Organizational Climate". "Employee's belief differs significantly based on demographic profile, job profile, and organizational profile on workforce diversity in the banking industry" findings show only a few categories in the hypothesis. The gender of the reporting authority and the classification of the bank offers the difference in employees belief about gender diversity. "Employee's attitude differs significantly based on demographic profile, job profile, and organizational profile on workforce diversity in the banking industry" only a few demographic categories (marital status, gender of the reporting authority, and classification of bank) have a difference. Employee perception differs based on demographic profile, job profile, and organizational profile on workforce diversity in the banking industry. The study found that gender, gender of reporting authority, classification of the bank, monthly salary, and employee work experience show the difference in employees' perception towards workforce diversity. Employee culture differs based on demographic profile, job profile, and organizational profile on workforce diversity in the banking industry; the gender of the authority and classification of the bank show the difference in employees' culture. "Employee's organizational climate differs significantly based on a demographic variable, job profile, and organizational profile on workforce diversity in the banking industry, age, gender, gender of the reporting authority, and classification of the bank show the difference in organizational climate. The study found a positive correlation between the variable and the independent variables are the constant and strong predictors of the dependent variable. Employees' attitude towards workforce diversity is assessed based on demographics, job, and organisational profiles. Workforce diversity is appraised by evaluating different components of it, such as employees' beliefs, attitudes, perceptions, and culture. The results show that employees with same-gender reporting authority have a positive attitude towards workforce diversity and experience a positive organizational diversity climate. The public bank employees have a positive attitude towards workforce diversity and experience a positive organizational diversity climate. Employees' attitudes differ based on their marital status also. Employees' perception differs based on their work experience in the same bank and the monthly salary; those with 11 to 15 years of experience tend to have a positive perception. Age, gender, gender of the reporting authority, and the bank's classification are considered contributing factors to the organizational climate. The current study found the gender of reporting authority shows a difference in perception of gender diversity and organizational climate; the employees who have same-gender reporting authority tend to experience a positive organizational climate and a positive attitude towards workforce diversity. Classification of the bank also shows a difference where public bank employees experience a positive organizational climate and a positive attitude towards workforce diversity. Six hypotheses were tested, and a model for the banking industry in Bangalore was developed based on the results of these hypotheses testing. Theoretical models support all hypotheses. Fit indices show that all CB-CFA and CB-SEM models are a good fit. -
Sensitivity Analysis of Heat Transport in Nanofluids with Marangoni Convection
Crystal growth, soap flm stabilization, coating processes, and growth of silicon newlinewafers involve Marangoni convective and#64258;ows. In microgravity situations, Marangoni effect is more prominent than gravity-induced buoyancy forces. In such situations, the convective and#64258;ows in the and#64258;uids will be driven by surface tension gradients. Moreover, the control of heat transport in the hydromagnetic semiconductor crystals involves Marangoni convection. Therefore, the heat transport rate in Marangoni convective and#64258;ow of nanoand#64258;uids is optimized in this research work. The thermal, thermo-solutal, mixed thermo-solutal Marangoni convection problems are explored in the presence of an external magnetic feld. The thermal phenomenon is scrutinized by including thermal radiation. Diand#64256;erent external eand#64256;ects are included in the problems and a detailed parametric analysis is carried out by using graphical visualizations. The newlinegoverning equations are constructed by utilizing the conservation equations of mass, newlinemomentum, energy and concentration. Realistic nanoand#64258;uid models are chosen which are validated with experimental data. Finite-diand#64256;erence-based and Runge-Kuttabased solving methodologies are adopted. The optimization of the heat (and mass) transport is carried out using the Response Surface Methodology (RSM). The facecentered central composite design is used for optimization. The quadratic empirical models obtained are further explored by estimating the sensitivity. The problem studied in each chapter is given below: Thermal Marangoni and#64258;ow of a nanoand#64258;uid with nanoparticle aggregation newlineA study of magnetohydrodynamic thermal Marangoni convection of ethylene glycol (EG) based titania (TiO2) nanoand#64258;uid is carried out by considering the eand#64256;ect of nanoparticle aggregation. The heat transport phenomenon is scrutinized with thermal radiation. The eand#64256;ective thermal conductivity and viscosity with aggregation are modeled by using the Maxwell-Bruggeman and Krieger-Dougherty models. -
A Study on Restrained Geodetic Domination in Graphs
In a graph G = (V, E), the shortest path between any two vertices u and v in G is u and#8722; v geodesic. This distance concept leads to the introduction of geodetic set and geodetic number which has wide applications in location theory and convexity theory. A vertex subset S of a graph G is said to be a geodetic set, if all vertex in G is in u and#8722; v geodesic for some pair of vertices u and v in S. The minimum cardinality of such a set is the geodetic number and is denoted as g(G). A vertex subset M of a graph G is said to be a dominating set of G if for all vertex v and#8712; V (G), either v and#8712; M or v is adjacent to a vertex in M. The minimum cardinality of such a set is the domination number and is denoted by and#947;(G). In general, the geodetic set and newlinethe dominating set of a graph need not be the same. This led to the study of the geodetic dominating set. If a geodetic set S is a dominating set of a graph G, then S is called a geodetic dominating set. The minimum cardinality of such a set is the geodetic domination number, which is represented by and#947;g(G). There are several studies done on the geodetic and domination concepts so far. In the present study, we have explored the concept of restrained geodetic domination and its structural properties in graphs particularly in product graphs and derived graphs. A vertex subset S of a graph G = (V, E) is called a restrained geodetic dominating set if S is a geodetic dominating set of G and lt V and#8722; S gt has no isolated vertex. The minimum cardinality of such a set is called restrained geodetic domination number, which is denoted by and#947;gr(G). We have studied this concept for diand#64256;erent classes of graphs and concerning the graph operations such as Cartesian product, corona product, and join of graphs. Further, the study is extended to restrained geodetic domination in derived graphs such as edge subdivision graph, line graph and power of a graph. Also, investigated the properties of graphs with the restrained geodetic domination number equal to the order of the graph. -
Moral Identity, Moral Emotions and Maladaptive Personality Traits Among Adolescents in South Korea by Doo Jong Kim
The rule of survival of the fittest often thwarted the leap towards holistic development. How does morality associate with personality in adolescent development? Drawing on the theories of Augusto Blasi and Gordon Allport, the present study took a morality-personality integrative approach to adolescent development and viewed moral identity centrality as an agentic drive for their holistic growth. It aimed to determine whether moral identity centrality, other-praising moral emotion, and personality dysfunction of maladaptive personality traits are coherent in predicting antisocial behaviour in a sample of 436 Korean adolescents (M = 15.71 years, SD = .70; female 48.4%). The present study set up three hypotheses in the structural relationship of research variables (i.e., moral identity centrality, other-praising moral emotion, personality dysfunction of maladaptive personality traits and antisocial behaviour). Hypothesis 1: Personality dysfunction of multiple maladaptive personality traits predicts antisocial behaviour. Hypothesis 2: Other-praising moral emotion and personality dysfunction mediate moral identity centrality and antisocial behaviour. Hypothesis 3: Sex does not make notable differences in the structural relationship of research variables. The study analyzed the data mainly through structural equation modelling (SEM). As a result, all hypotheses were accepted. First, four multiple maladaptive traits, i.e., negative affectivity, antagonism, disinhibition, and psychoticism, significantly predicted adolescents antisocial behaviour (and#946; = .791, p lt .001) (Hypothesis 1). Second, the modified structural model showed a serial multiple mediation effect of other-praising moral emotion and personality dysfunction between moral identity centrality and antisocial behaviour (Hypothesis 2). Third, multi-group analyses showed apparent coherence among research variables regardless of sex (Hypothesis 3).