Pamy, Sebastian; Dr.Johnson, T P(Cochin University of Science and Technology, June 16, 2014)
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Abstract:
This thesis comprises five chapters including the introductory chapter. This includes a brief introduction and basic definitions of fuzzy set theory and its applications, semigroup action on sets, finite semigroup theory, its application in automata theory along with references which are used in this thesis. In the second chapter we defined an S-fuzzy subset of X with the extension of the notion of semigroup action of S on X to semigroup action of S on to a fuzzy subset of X using Zadeh's maximal extension principal and proved some results based on this. We also defined an S-fuzzy morphism between two S-fuzzy subsets of X and they together form a category S FSETX. Some general properties and special objects in this category are studied and finally proved that S SET and S FSET are
categorically equivalent. Further we tried to generalize this concept to the action of a fuzzy semigroup on fuzzy subsets. As an application, using the above idea, we convert a _nite state automaton to a finite fuzzy state automaton. A classical automata determine whether a word is accepted by the automaton where as a _nite fuzzy state automaton determine the degree of acceptance of the word by the automaton. 1.5. Summary of the Thesis 17 In the third chapter we de_ne regular and inverse fuzzy automata, its construction, and prove that the corresponding transition monoids are regular and inverse monoids respectively. The languages accepted by an inverse fuzzy automata is an inverse fuzzy language and we give a characterization of an inverse fuzzy language. We study some of its algebraic properties and prove that the collection IFL on an alphabet does not form a variety since it is not closed under inverse homomorphic images. We also prove some results based on the fact that a semigroup is inverse if and only if idempotents commute and every L-class or R-class contains a unique idempotent. Fourth chapter includes a study of the structure of the automorphism group of a deterministic faithful inverse fuzzy automaton and prove that it is equal to a subgroup of the inverse monoid of all one-one partial fuzzy transformations on the state set. In the fifth chapter we define min-weighted and max-weighted power
automata study some of its algebraic properties and prove that a fuzzy automaton and the fuzzy power automata associated with it have the same transition monoids.
The thesis ends with a conclusion of the work done and the scope of further study.
Sam, Thomas; Dr.Bhasi, M(Cochin University of Science and Technology, July , 2008)
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Abstract:
This research was undertaken with an objective of studying software development project risk, risk management, project outcomes and their inter-relationship in the Indian context. Validated instruments were used to measure risk, risk management and project outcome in software development projects undertaken in India. A second order factor model was developed for risk with five first order factors. Risk management was also identified as a second order construct with four first order factors. These structures were validated using confirmatory factor analysis. Variation in risk across categories of select organization / project characteristics was studied through a series of one way ANOVA tests. Regression model was developed for each of the risk factors by linking it to risk management factors and project /organization characteristics. Similarly regression models were developed for the project outcome measures linking them to risk factors. Integrated models linking risk factors, risk management factors and project outcome measures were tested through structural equation modeling. Quality of the software developed was seen to have a positive relationship with risk management and negative relationship with risk. The other outcome variables, namely time overrun and cost over run, had strong positive relationship with risk. Risk management did not have direct effect on overrun variables. Risk was seen to be acting as an intervening variable between risk management and overrun variables.
Description:
School of Management Studies, Cochin University of Science and Technology
Dhanalakshmi,T; Dr.Sankaranarayanan, K C(Cochin University of Science & Technology, April , 2011)
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Abstract:
This thesis analyzed waste generation and waster disposal problems in municipalities and Cochin Corporation in Ernakulam district.Then the potential of resource recovery and recycling from biodegradable and non bio-degradable waste is established.The study further focused on the need for segregation of waste at the source as biodegradable and non biodegradable solid waste.The potential of resource recovery is explained in detail through the case study.The thesis also highlights the economically viable and environmental friendly methods o f treatment of waste.But the problem is that concerted and earnest attempts are lacking in making use of such methods.In spite of the health problems faced,people living near the dump sites are forced to stay there either because of their weak economic background or family ties.The study did not calculate the economic cost of health problems arising out of unscientific and irresponsible methods of waste disposal.
Description:
Dept.of Applied Economics,Cochin University of Science and Technology
Achamma, Kurian; Sajan, D George; Nampoori, V P N; Vallabhan, C P G(Elsevier, 2005)
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Abstract:
A sensitive method based on the principle of photothermal phenomena to study the energy transfer processes in organic dye mixtures is presented. A dual beam thermal lens method can be very effectively used as an alternate technique to determine the molecular distance between donor and acceptor in fluorescein–rhodamine B mixture using optical parametric oscillator.
Elizabeth, George; Dr. Zakkariya, K.A(March 20, 2013)
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Abstract:
This study focuses on psychological empowerment of employees in
banking sector because of the reasons stated below:
Firstly, very little research has been conducted in understanding
empowerment as a psychological construct. Majority of the studies have been
conducted on the various empowerment practices in the organizations.
Secondly, there is no empirical evidence that the empowerment practice
will create a subjective feeling of empowerment within the individual.
Employee empowerment will be effective only if the employees actually
experience the empowerment. Even if the organizations have the empowerment
practices like providing power and open communication it is not necessary that
the employee is empowered. Empowerment describes only the condition of
work environment. It does not describe employees’ response to these
conditions. These responses form the basis for psychological empowerment
Elizabeth, George; Dr. Zakkariya, K.A.(Cochin University Of Science And Technology, March 20, 2013)
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Abstract:
The present research is carried out to understand how psychological
empowerment, job satisfaction and job related stress are related.In banking sector, employees are less satisfied and less motivated than
employees in other lines of work (Kelley, 1990; Bajpai, Naval and Deepak,
2004). The banking industry also suffers from high employee turnover rate
(Branham, 2005; Nelson, 2007) and high level of stress (Chen and Lien, 2008).
There are no adequate studies linking psychological empowerment and job
satisfaction, stress, turnover etc. among employees of banking sector. Lack of
psychological empowerment could be a reason for these problems faced by
banking sector. Further majority of studies in psychological empowerment are
carried out in manufacturing sector and studies in service sector are
concentrated on hotel industry and hospitals. Empowerment takes different
forms in different contexts (Zimmerman, 1995).
In the light of above discussion, the present research is directed to explore
the dimensions of psychological empowerment of employees in banking sector and
to find out whether high psychological empowerment can increase job satisfaction
and reduce job related stress among employees in banking sector
Description:
Department of Applied Economics
Cochin University of Science and Technology
Santhosh Kumar, T G; Dr.Benny Mathews, Abraham(Cochin University of Science & Technology, November , 2010)
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Abstract:
The constructional activities in the coastal belt of our country often demand deep foundations because of the poor engineering properties and the related problems arising from weak soil at shallow depths.The soil profile in coastal area often consists of very loose sandy soils extending to a depth of 3 to 4 m from the ground level underlain by clayey soils of medium consistency.The very low shearing resistance of the foundation bed causes local as well as punching shear failure.Hence structures built on these soils may suffer from excessive settlements.This type of soil profile is very common in coastal areas of Kerala,especially in Cochin. Further,the high water table and limited depth of the top sandy layer in these areas restrict the depth of foundation thereby further reducing the safe bearing capacity.
Description:
Division of Civil Engineering,Cochin University of Science and Technology
Ashly, P C; Dr.Mohanan, P V(Cochin University of Science and Technology, April , 2009)
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Abstract:
This work was focused to study the immobilization of enzymes on polymers. A
large range of polymer matrices have been employed as supports for enzyme
immobilization. Here polyaniline (PAN!) and poly(0~toluidine) (POT) were used as
supports. PANI and POT provides an excellent support for enzyme immobilization by
virtue of its facile synthesis, superior chemical and physical stabilities, and large retention
capacity. We selected industrially important starch hydrolyzing enzymes a-amylase and
glucoamylase for the study. In this work the selected enzymes were immobilized via
adsorption and covalent bonding methods.To optimize the catalytic efficiency and stability of the resulting biocatalysts, the
attempt was made to understand the immobilization effects on enzymatic properties. The
effect of pH of the immobilization medium, time of immobilization on the immobilization
efficiency was observed. The starch hydrolyzing activity of free 0:-amylase and
glucoamylase were compared with immobilized forms. Immobilization on solid supports changes the microenvironment of the enzyme there by influences the pH and temperature
relationship on the enzymatic activity. Hence these parameters also optimized. The
reusability and storage stability of immobilized enzymes an important aspect from an
application standpoint, especially in industrial applications. Taking in to consideration of
this, the reusability and the long tenn storage stability of the immobilized enzyme
investigated.
Description:
Department of Applied Chemistry, Cochin
University of Science and Technology
Binu,M A; Dr.Ramachandra, Poduval P(Cochin University of Science and Technology, August 27, 1997)
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Abstract:
Organisational commitment of various groups of professionals
seems to be moderated by the differences of the groups as well as of
the socialisation experiences Demographic variable ‘age’ and the
semi-structural variable ‘experience’ cause a difference in the level
of commitment. Similarly, the professional and organisational
differences moderate the level of commitment. From the point of
view of the organisations, the socialisation experiences if differ can
be used as tool to process and enhance the level of commitment of
professionals of various groups.The ‘Socialisation effect’ does not depend on the professional or demographic differences. Socialisation level is moderated only by the
organisational specialities. It is purely an organisational variable.
However, the difference in the socialisation levels as found among
the professionals can cause a significant difference in the levels of
organisational commitment of professionals
Description:
School Of Management
Studies , Cochin University Of Science And Technology.
Anniamma, Chacko; Dr.Babu,Jose T; Dr.Benny Mathews, Abraham(Cochin University of Science and Technology, June 27, 1998)
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Abstract:
There are numerous parameters affecting the compressibility characteristics of soft
clays. A few of them such as load increment ratio, type of drainage and thickness of
sample were taken up for detailed investigation. However, the main thrust in the
present investigations was to develop an insight into the benefits of preloading
technique, envolve procedures and establish design charts for preparation of a
precompression programme which will substantially reduce the consolidation
settlements of the extremely soft deposits of Cochin marine clays.
Description:
School of Engineering,
Cochin University of Science & Technology