FEC decoder design optimization for mobile satellite communications

A new telecommunications service for location determination via satellite is being proposed for the continental USA and Europe, which provides users with the capability to find the location of, and communicate from, a moving vehicle to a central hub and vice versa. This communications system is expected to operate in an extremely noisy channel in the presence of fading. In order to achieve high levels of data integrity, it is essential to employ forward error correcting (FEC) encoding and decoding techniques in such mobile satellite systems. A constraint length k = 7 FEC decoder has been implemented in a single chip for such systems. The single chip implementation of the maximum likelihood decoder helps to minimize the cost, size, and power consumption, and improves the bit error rate (BER) performance of the mobile earth terminal (MET)

Three dimensional asset documentation using terrestrial laser scanner technology

Asset documentation is a detailed record or inventory of the properties located within a room or a building. It is important to record the assets in case of property loss happen inside the premise especially when that premise caught fire, earthquake, robbery and others. The instrument used in this study is Faro Laser Scanner Photon 120/20. The object of the study is the computer room of Photogrammetry Lab, Faculty of Geoinformation and Real Estate. The final output of this study is the 3D model of the assets available inside the building. Before 3D model can be formed, the scanned data which is in the form of point cloud generated from the laser scanner have to be registered and georeferenced in order to combine the scans. The combine scans is the representation of the whole area of work surveyed from every scan points. These processes use Faro Scene, software that comes together with the laser scanner. By introducing this method, large scale asset documentation such as for factories and schools would be very beneficial rather than conventional method. The next process is to model the point cloud using AutoCAD 2011. Every item available on the room such as desks, chairs, cubicles, computers, whiteboard, projectors and cupboard are modeled and each of these items was inserted with attributes so that we can know the information of each item

A Study on the Socioeconomics of Imperata Grassland Managers at Dargakona Village, Barak Valley, Assam, Northeast India

Socioeconomic profile of farmers has great implications in present days for providing insight into demography, education, income and management of bio-resources. The small scale farmers of rural regions have indeed conserved the indigenous and traditional facts since past generations that eventually redefined as traditional ecological knowledge. Hence, keeping in view, the socioeconomic structure of the villages in Barak Valley region, the grassland managers of agricultural communities could be recognized as a great storehouse of traditional knowledge that play a vital role towards various land recuperation processes. The study was carried out at Dargakona village, Barak Valley, Assam, northeast India with an objective to identify factors that regulate the socioeconomic characteristics of rice farmers and measures to be adopted for improvement of their status. Data were collected from 48 households that were randomly sampled through questionnaire survey and structured interview schedule. The dominant inhabitants of the village were Deshawali (56.30%), Bardhamani (36.70%) and Koibarta (7%) in order of their proportionate share of the population. The average family size indicated almost identical size among the population below 14 years as well as above 30 years of age. Education status expressed low rate of literacy with 41% had no experience of school learning. Roofing pattern of houses indicated maximum use of thatch grass as raw material. The age of the grasslands varied from 10 years to more than 40 years. The rice farmers classified four soil types i.e. ‘lal’, ‘balu’, ‘athail’ and ‘citta’. Majority (50%) of the respondents were found with marginal land holdings of one bigha or less. About 23% of the farm natives briefed that the yield of their grasslands amounts to 1000 gollas (a local unit for cash transaction) of dried leaves per annum. Although much of the farmers are in favor of grassland management but still there are people who wants replacement with plantation of economically important species. The Imperata grasslands are generally managed for both subsistence and income generation. The study concluded that there is an urgent need of Government, NGO and other stakeholders to intervene and study the issues and challenges of the small scale farmers. Thereafter, proper policies may be formulated in restoration of the degraded grasslands and improving the socioeconomic status of the village communities residing in Barak Valley, Assam, northeast India

Impact of garment industries on road safety in metropolitan Dhaka

There are about 4,000 garment industries in Bangladesh, most of them are clustered in and around the capital city. Together they account for 75 percent of the country's export earnings and employ around 1.8 million people which is almost one half of the total industrial workforce of the country. Though it is the most important economy sector of Bangladesh, unplanned and haphazardly built garment factories are also inducing many social, housing and most importantly urban transportation problems which are a great cause of concern. This study investigates the impact of garment industries on transportation, in particular road safety issues of garment workers. Data is collected to identify the locational problems of garment factories, spatial distribution of worker residences, and their travel pattern as well as to assess their walking and road crossing problems. Finally, recommendations are put forward to tackle transport problems arising from these unplanned establishments of export oriented garments industries in Dhaka Metropolitan City

M3: An Open Model for Measuring Code Artifacts

This document details design considerations of M3: a meta model for source code artifact

W.B. Yeats\u27s Construction of India

William Butler Yeats’s literary career consists of varied passions and interests. He had a life-long interest in the occult mysticism of the East and the West, and Indian philosophy and spiritual tradition cover a considerable space in Yeats’s mysticism. From 1880s to the end of his life, Yeats cherished a profound interest in the spiritual India which was periodically reinforced by his encounters with three Indian personalities: Mohini Mohun Chatteijee in 1886, Rabindranath Tagore in 1912, and Shri Purohit Swami in 1931. Each of these three Indians left a profound impression on his mind and influenced him substantially. Yeats also wrote about them in memoirs, autobiographical reminiscences, and in a substantial number of letters. He also wrote introductions for Tagore’s Gitanjali (1912), Purohit Swami’s An Indian Monk (1932), and the latter’s translation of his Master, Bhagwan Shri Hamsa’s autobiography The Holy Mountain (1934). These introductory essays by Yeats as well as his autobiographical reflections, letters, and occasional poems like “Mohini Chatterjee” and “Meru” are significant documents that help us understand Yeats’s cultural-political construction of India. Yeats’s conception of India is complex and ambiguously nuanced. There are times when he conflates the Indian and Western mysticisms or spiritual traditions. At other times, he attempts to distinguish the “spiritual” Indian civilization from the materialist civilization of the West, and the philosophically syncretic Indian vision from the dualistic vision of Western thoughts. Although in these works he often seems to betray a deliberate or inadvertent complicity with the dominant Western discourses, Yeats’s construction of India also challenges and reverses the Orientalist binaries, and attempts to provide an alternative representation of the Orient

GEOMETRY INDUCED MAGNETO-OPTIC EFFECTS IN LPE GROWN MAGNETIC GARNET FILMS

This dissertation addresses dimensionality-induced magneto-optic effects in liquid-phaseepitaxy magnetic garnet thin films. It is found that the Faraday rotation (FR) per unit length evinces a marked and steady enhancement as the film thickness is reduced below ~100 nm in Bi0.8Gd0.2Lu2Fe5O12, although it remains constant in the micron- and most of the submicron- regime. The reported specific FR change in such reduced dimensions is due to sizedependent modifications in diamagnetic transition processes in the garnet film. These processes correspond to the electronic transitions from the singlet 6S ground state to spinorbit split excited states of the Fe3+ ions in the garnet. A measurable reduction in the corresponding ferrimagnetic resonance linewidths is found, thus pointing to an increase in electronic relaxation times and longer lived excitations at reduced thicknesses than in the bulk. These changes together with a shift in vibrational frequency of the Bi-O bonds in the garnet at reduced thicknesses result in magneto-optical enhancement in ultra-thin garnet films. This dissertation also studies optical transmittance control through multimode elliptically birefringent waveguides achieved by one-dimensional magneto-photonic crystals (MPCs) and the tuning of longitudinal magnetic bias in such waveguides, together with the tuning of the helicity of the input elliptical beam. Magnetization reversal is found to strongly reconfigure the stop band spectrum, through hybridization of the ellipticallypolarized states due to normal mode symmetry breaking