Institutional Repository

Scholar@UOC is the primary academic repository of the University of Calicut.

This repository is aimed to collect, preserve and distribute the research output of the members of our University. This is an open access system hosted and managed by the University Library.

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Recent Submissions

Taxonomy and molecular phylogeny of long jawed spiders (araneae: tetragnathidae) in Kerala.
(Christ College (Autonomous), University of Calicut., 2026) Anju K. Baby; Usha Bhagirathan
The family Tetragnathidae, commonly known as long jawed spiders, is distributed in the tropical and subtropical areas of the world. The present study is the first to systematically investigate the taxonomy and molecular phylogeny of tetragnathids in Kerala with the purpose of delimiting species boundaries and understanding interrelationships between them. The study documented a total of 27 tetragnathids under eight genera from the state of Kerala, which constitutes 48% of the Indian tetragnathid fauna. A new six-eyed Dolichognatha species, D. chimminiensis sp. nov., described during the study represents the third of the genus from India. Tetragnatha cochinensis, T. viridorufa, Tylorida flava, and Atelidea sp. were recorded as endemic to India. This is the first to record T. lauta, T. squamata, T. serra, T. jaculator and a silvery spider, Leucauge rubromaculata from India. Males of L. fastigata and Tylorida flava were recorded for the first time in India and this is the first to describe the latter species with an exhaustive account of its body morphology and genitalic characters. Furthermore, T. chamberlini was proposed as the junior synonym of T. javana and T. andamanensis was synonymized with T. hasselti. Since the taxonomic accounts of many of the tetragnathids were inadequate, T. cohinensis, T. geniculata, and T. serra were rigorously redescribed and the former species was revised after a century. The barcode data generated during the current study were satisfactorily concordant with the traditional morphological characters. The concatenated nucleotide sequences of CO1 and 18S fairly resolved the evolutionary relationship between tetragnathids by employing Neighbour Joining (NJ), Maximum Parsimony (MP), Maximum Likelihood (ML), and Bayesian Inference (BI) approaches. The monophyly of the family Tetragnathidae was evident with the clustering of four subfamilies, such as Tetragnathinae, Leucauginae, Metainae, and Nanometinae.
Studies on nanofluids convection flows and diverse applications
(St. Thomas College - Autonomous, 2025) Rose Paul; Julie Andrews
A substance that has the ability to flow is referred to as a fluid. Fluids are broadly classified into two types: liquids and gases. The branch of physics that deals with the behavior of fluids at rest is known as fluid statics. The combined study of fluid statics and the behavior of fluids in motion, known as fluid dynamics, is termed fluid mechanics. Nano fluid is a colloidal mixture in which a base fluid (water, oil, ethylene glycol, etc.) is mixed with nanometre-sized particles (metals, carbides, oxides or carbon nanotubes). Nano fluids tend to upgrade and stabilize the thermal properties of the fluid which marked a revolution in the field of fluid dynamics. The description of a system using mathematical concepts and language is known as mathematical model and the process of developing a mathematical model is known as mathematical modelling. Mathematical models and its use in natural sciences, engineering disciplines and social sciences. A mathematical model helps to explain a system and to study the effects of different components and also to make predictions about its behaviour. The thesis entitled Studies on nanofluids: convection flows and diverse applications has been arranged into 7 chapters. Chapter 1 introduces the basic concepts, preliminaries and definitions to the reader. Chapter 2 explains The Impact of Volume Fraction and Nanoparticles in the Flow of Nanofluids Along the Boundary Layer Over a Flat Plate. Chapter 3 explains Impact of Volume Fraction on Boundary Layer Flow of Nanofluids Over a Moving Plate. Chapter 4 explains Effect of Mixed Convection, Plate Inclination, and Nanoparticle Volume Fraction on Nanofluid Boundary Layer Flow. Chapter 5 contains Application of Nanofluids. Chapter 6 and 7 present the concluding remarks of the thesis and proposals for future work.
Environment livelihood patterns and social change the case of coastal malabar 1800 1990
(Department of History, University of Calicut, 2025) Anjumon, P.; Madhavan, K.S.
The present study aims to investigate the socio-cultural history of traditional fishermen and coastal people of Kerala. The period of the study is AD 1800-1990. Fishing was an important occupation during the ancient period. The research on fishing in India began in the early AD 1800. During this same period, Malabar transitioned from the Bombay presidency to become part of the Madras presidency. The Madras presidency has established numerous departments for administrative ease, each focusing on distinct areas. Some of such departments are the Marine Department and Fisheries Department. According to reports and figures published by the Madras fisheries department, it can be understood that the fishing sector yields substantial income for the government. During the colonial and postindependence periods, the fishing sector underwent various stages of mechanisation. The government was forced to enforce certain limitations on the fishing sector during 1989 to 1990 due to the mechanisation implemented in the fishing industry. The research aims to find out the changes in the coastal environment of Malabar and the changes in the lifestyles of the coastal people involved in the period of 1800-1990. The introduction outlines the objectives, research questions, methodology, review of literature and chapterization. The first chapter, entitled “History and Culture of the Kerala Coast”, recorded important features of the coastal environment and the formation of coastal settlements. The second chapter, "Fishing Villages in South Malabar," discusses the different fishing villages of South Malabar, especially Kozhikode and Malappuram districts. The third chapter, “Fishing Communities of the Malabar Coast”, studied the customs and ritual practices of the different religions of the Malabar coast, like Hindu, Muslim, and Christian. The fourth chapter, “Traditional Knowledge of Coastal Peoples in Malabar”, explores the traditional knowledge of coastal peoples, and songs of the coastal areas that have been transmitted orally are also included in this chapter. The final chapter, "Modernisation and Transformation of the Malabar Coast," documents the impacts of modernity on the coastal environment and its inhabitants. The conclusion outlines the study's findings. While the fisheries sector generates substantial income for Kerala, the fishing community working behind it has become a marginalised group without any social or economic advancement. Similarly, the mechanisation in the fishing sector has allowed monopolists to enter the market, resulting in traditional fishermen losing access to their fishing grounds. The government plans several schemes with the aim of socially uplifting fishermen. However, the socio-economic status of fishermen can be improved only if the officials ensure that the said schemes are made available to the fishermen in a timely manner.
Human intervention and change of landscape History and ecology in the high range of Kannur since 1920
(Govt. Arts & Science College, Kozhikode, 2026) Rajan P.P.; Sudheerkumar P.
The research examines the impact of human intervention in the high range of Kannur since 1920. The area of study is the Western Ghats portion falling in the Kannur district, i.e., the Eastern part of the district. Till the early decades of 20th century the high range region was relatively unoccupied or less occupied. A s a result area was known for its rich vegetation and biodiversity. The inhabitants in the high range during the period were native people who were following traditional agricultural practices which can be corroborated with the colonial records available during the period. Present research tries to explore how the 20th century migration and the subsequent human interventions on the nature reshaped the landscape of the high range of Kannur. Coupled with this, the change in the traditional mode of cultivation and crops and the transition of rural economy are also looked into. Population in the high range of Kannur in the early years of 20th century was very small. Hence, human intervention in the region was not much visible. Descriptive memoirs of various amsams in the east of the district give ample evidences regarding the existence of low population and the availability of unoccupied land in the high range. They engaged in traditional mode of cultivation known as punam and cultivated crops like paddy, pulses and spices like turmeric and plantain. Ever since the migration of peasant migrants from Travancore to North Malabar started, the scenario in the region began to change. Migration of the peasants into the hinterlands of Kannur takes place in the late 1920s. Followed by this there was a large scale increase in population in the high range which may be observed through the census reports in the succeeding decades. Naturally, human intervention in the high range began to be more intense. More forest areas began to be cleared and brought under cultivation. Along with this the migrant people introduced here new crops like tapioca, rubber and cocoa which required new agrarian knowledge. Introduction of new crops by the migrant people eventually brought about the disappearance of the traditional agrarian practices and crops from the high range. What actually intensified the human intervention in the high range was the demographic transition in the region. The pattern of demography continued changing until about the end of 1970s. By this time the entire high range area had turned into rubber plantations and tapioca orchards.People living in the high range, since the introduction of new crops , began to be attracted towards it and started practicing the new agrarian system introduced by the migrant people.The new crops had some positive impacts as far as the people are concerned. Firstly, tapioca was met as a source to meet poverty. Rural areas especially the high range had been reeling under poverty until about the end of 1980s. At the same time, rubber could ensure a regular income after a few years. Due to these factors, high range people started shifting their traditional agrarian practices to the new system. But, in the newly introduced practice, landscape got reshaped, especially with the expansion of rubber cultivation. When the settlement process came to cease by late 1970s, the indigenous agrarian systems, knowledge and traditional crops all had disappeared from the high range. Demographically ,the region witnessed substantial changes. Number of house holds and the nature of construction underwent drastic changes. From earlier cucca buildings, they expanded into puccabuildings by 1990. From this period onwards human intervention in the high range reached next level by exploiting natural resources unwisely. Mining of various dimensions comprising land mining, granite and laterite mining plays a pivotal role in reshaping the landscape of the high range of Kannur. Expansion of road network intensified by the democratic decentralisation, urbanisation etc. have key roles in changing the ecology and landscape of the high range.
Mapping female melancholy A study of select novels of Jonathan Franzen and Jeffrey Eugenides
(Vimala College (Autnomous), Thrissur, University of Calicut., 2026) Annliya Shaijan; Bindu Ann Philip
The human mindis an intriguing phenomenon. The study on the functioning of thehuman mind is complex as it is individualised in cach person. Human emotions are universalas people regardless of their age, gender, sex, class, religion, race and creed, experiencesimilar feelings. The concept of melancholy, from its initial connotations, has evolved andaltered over the centuries.Melancholy is a timeless emotion blending extreme sorrow,nostalgia and introspection. The focalpoint of the study is the postmodern interpretation ofmelancholy inwomen withinthe selected context. The thesis attempts to map themelancholic temperaments in women from a literary perspective and not from a medicaloutlook. The thesis attempts to study the psychoanalytic feminist analysis of postmodernmelancholyin women within the selected works of Jonathan Franzen and Jeffrey Eugenidesdelineating hysterical realism. The thesis also aims to distinguish melancholy from traumaand depression. Differentiating the postmodern interpretations of melancholy from the earliernotions of other theorists, an attempt will be made to mould the female mind within theselected context. The objective also aims to delve into the possible circumstances thatconstruct the female mind to be melancholic. This thesis tries to fill the research gap createdinthe study of melancholy in women by tracing the expressions in contemporary Americansociety through the chosen novels. The primary texts chosen to study the undertones ofpostmodern female melancholy are The Corrections (2001), Freedom (2010) and Puriy(2015) by Jonathan Franzen and The Virgin Suicides (1993)and The Marriage Plot (2011) byJeffrey Eugenides. Despite the criticism of conceptualising women through the male lens, theselected tales accidentally or deliberately expose the nuanced melancholic realms of women.The thesis is conceptualised in alignment with the notion that the author loses gender as thesetexts plunge into the depths of the female psyche. The thesis neglects the gender of theauthors in the interpretations and analysis of the selected texts. This study intentionallyemphasises on the privileged class of women such as the white, learned and financially stableAmerican women. It is done in pursuit to delineate female melancholy as a multifaceted,inevitable and a subjective occurrence that eclipses the characteristic traits. The study will bebased mainlyon the theory of psychoanalytic feminism overlapping the importantpostulations in psychoanalysis subjected to the central aspects of the thesis. It also integratesthe various aspects of postmodernism and hysterical realism. The thesis statement of thestudy is that the female melancholy is an inevitable, multifaceted and a subjective emotionalstate of the mindthat functions as a refined contrast to the clinical mentaldisorders in thepostmodem times. It proposes a nuanced comprehension of the affective terrains of womenmarked by unaddressed loss, disenchantment, fragmentation and upheavals. The postmodernmelancholy in women is contextual; it presents a compulsive narration of desire andunresolved grief. The thesis eventually reconstructs the historical perspectives on femalemelancholy in the postmodern times. It analyses postmodern female melancholy as a centraland coercive facet of the selected novels. The postmodern interpretation of melancholyunfolds as a powerful expression of identity, sorrow and defiance in women.