Channel Estimation for MIMO MC-CDMA Systems

The concepts of MIMO MC-CDMA are not new but the new technologies to improve their functioning are an emerging area of research. In general, most mobile communication systems transmit bits of information in the radio space to the receiver. The radio channels in mobile radio systems are usually multipath fading channels, which cause inter-symbol interference (ISI) in the received signal. To remove ISI from the signal, there is a need of strong equalizer. In this thesis we have focused on simulating the MIMO MC-CDMA systems in MATLAB and designed the channel estimation for them

Humanity in Purananooru

The Purananooru Thokai is unrivaled among the Tamil treasures compiled and preserved by ancient Tamil scholars. It describes the system of rule of the kings of the Sangam age. It makes us aware of the history and culture of the ancient Tamils. The Purananuru helps us to realize the glories of public life. A closer look helps us to understand the position of the Tamils of the time in the fields of political education, ethics, science, literature, music, and fine arts. The Purananooru beautifully highlights the excellence of the Tamils of that time in qualities such as love, grace, friendship, valour, honour, and charitableness. This book highlights the greatness of Kadayezhu Vallals, poets, crowned kings, leaders of small lands, petty chiefs, poets, brave people, etc. Many songs refer to eighteen Chera kings, thirteen Chola kings, and twelve Pandya kings. The Purananooru mentions the good social life of the Tamils, political awakening, hospitality, high morality, firm principles, wearing mangal sutra, installing the middle stone, fasting during widowhood, the shortening of the meal, the burial of the dead in the thali (pot), and the climbing of the funeral pyre of the husband

A case study of Whangaparaoa College: a transformative learning organisation in the making?

The concept of a learning organisation is relatively new to schools and educational institutions in New Zealand. Understanding educational institutions as learning organisations can enable institutions to meet the demands of an ever changing context. In this way, educational institutions can strategically develop as transformative learning organisations that are dynamic and responsive. This research sought to explore the extent to which a particular school exhibits the characteristics of a learning organisation in its organisational development. The case study was situated in a New Zealand secondary school in relation to its transition from an intermediate school into a full-fledged secondary school. More specially, to what extent is Whangaparaoa College a transformative learning organisation in the making? The findings presented in this thesis highlight the characteristics of a learning organisation as exhibited by this particular school. While some characteristics relate directly to the five disciplines of learning organisations (Senge, 1990), this research has identified other characteristics that enable a unique way of considering a school as a learning organisation. The most notable attribute of this case study is the breadth of innovative thinking and practice that was voiced by the participants. The innovative nature of the school is expressed in the positional titles; infrastructure and the ICT influenced pedagogy. Developmental challenges are also construed as learning opportunities. Critically important to this schools development as a learning organisation is the role of professional development for staff as this enhances the formation of a learning community. This research opens a range of possibilities for future research which might investigate the characteristics of a learning organisation in different educational contexts

The Creative Cell of Gender Tapata nilai

The songs of the association are a documentary that reveals the life of Tamils. This description illustrates the crisis of woman's place in ritualistic life two thousand years ago. The Tamil community classifies a woman who has lost her husband into three stages. These days, the community has subtly defined the functioning of the women of the association. The community has urged women to continue to adopt the strict Kaim-ink that women who have lost their husbands must adhere to. Itchier explores the nature of the feminine creation of their thinking. It also clarifies how the masculine record is recorded and the difference between the creators in gender based texting and the disappearance of the mother

Efficacy of Topical Ivermectin in comparison to other scabicidal agents

INTRODUCTION: Scabies is a common, intensely pruritic dermatoses caused by the mite Sarcoptes scabiei var hominis. It is highly contagious and transmitted by close skin to skin contact. Scabies remains a major health problem in terms of its contagious nature and the secondary infections which occurs as a result of this disease. AIMS AND OBJECTIVES: Aim of the study was to compare the efficacy of topical ivermectin and other scabicidal agents and to assess the improvement in severity of pruritus and severity of lesions with treatment. MATERIALS AND METHODS: Around 90 scabies patients were selected from the patients attending out patient clinic in dermatology department. After obtaining informed written consent, detailed history and thorough clinical examination of the patients was done. The patients were randomly allotted to one of the three treatment groups- GBHC, Permethrin and Ivermectin group. The treatment response was analysed in all the treatment groups based on reduction in the Severity of pruritus score and Severity of Lesions score. The response was then graded as good, moderate and poor. RESULTS: Mean age of the study population was 27.66 years. Forty seven patients were males (52.2%) and forty three patients were females (47.8%). In Ivermectin group, 86.6% (26 out of 30) patients had good response to treatment whereas in Permethrin group, 36.7% (11 out of 30) patients had good response to treatment. In GBHC group, only 10% (3 out of 30) patients had good response to treatment. Ivermectin compared favourably to the other two drugs with nearly more than three fourths of the patients having significant improvement at an earlier stage while permethrin group had better response after twice application of the medicine when compared to GBHC group. CONCLUSION: From this study, it can be concluded that topical Ivermectin can be considered as first line of treatment modality for scabiesamong other available agents as it causes earlier and maximum response. This study emphasizes the need for finding out newer effective drugs for treating scabies