On Measuring the top quark mass using the dilepton decay modes

We demonstrate a new likelihood method for extracting the top quark mass from events of the type ttbar-->bW(l+nu)bW(l+nu) This method estimates the top quark mass correctly from an ensemble of dilepton events. The method proposed by Dalitz and Goldstein [1] is shown to result in a systematic underestimation of the top quark mass. Effects due to the spin correlations between the top and anti-top quarks are shown to be unimportant in estimating the mass of the top quark.Comment: To appear in the proceedings of the 1996 DPF/DPB study on new directions for High Energy Physics, Snowmass, Colorad

Comparison of model predictions and speed trial results for a group of 32' wooden trawlers

Speed trial results of six 32' wooden stern, trawlers built to the same design are analyzed to determine the EHP ship Froude number curves in each case and are compared with the model test results of the same design and for the corresponding, displacement, conditions

Man-power needs for marine fisheries by 2000 AD

Formal training of operatives for marine fishing industry started in late forties when the erstwhile Deep Sea Fishing Station commenced training activities. However, organised training for fisheries personnel commenced with the establishment of CIFNET (erstwhile CIFO) and CIFE in the early sixties. The former catered to the manpower needs for operating the fishing vessels while the latter produced the managerial/administrative personnel for shore support. Today a number of fishery colleges and Agricultural colleges supplement the training activities of these two training establishments in fisheries-related disciplines. Accent on innovations of harvest and post harvest technologies of marine capture fisheries has necessitated upgradation and modernisation of training processes of CIFNET. This has been done following a series of studies and evaluations commensurate with the type and kind of technologies, breed and nature of craft and gear Introduced etc. In addition to meeting the domestic needs, the trained manpower is the national wealth which is spared (or development of industry in friendly developing countries to our advantage due to the inflow of foreign exchange. Reckoning the present pace of growth of our marine fishing Industry a projection of the manpower needs for 2000 AD Is attempted In the present paper. The nature and specialities of the human resources that would be needed that time have t)een attempted to be Identified and the innovation to be made in the production process are outlined

Unusual heavy landings of Caranx carangus along Cuddalore Coast

An unusual bunper catch of Caranx carangus was observed in Cuddalore fishing harbour on 26-03-2004.Three fibreglass boats fitted with 9HPp outboard engine of 9m length and 2m width landed a heavy catch of 5.2 tonnes of fish

The Role of Soft skills in Empowering Fresh Engineering Graduates in India

Soft Skills are personal attributes that enables one to interact effectively and harmoniously with other people. During campus recruitment process students with high grades fail to get a job due to poor soft skills. NASSCOM-McKinsey report (2005), states that only 25% of technical students and 10-15% of the general graduates in India are employable. In the recent past the awareness regarding soft skill has increased but the studentrsquos attitude and efforts to imbibe these qualities hasnrsquot.nbspConsidering the above facts it is high time that the present generation should change their attitude towards imbibing soft skills in their daily life. The growing population, increasing number of engineering colleges across the country, shrinking number of job opportunities and volatile market conditions will only add further burden to our younger generation.nbs

Scantlings for small wooden fishing vessels

Studies are carried out to find a suitable basis of specifying scantlings for wooden fishing vessels for India, especially for the range 30' to 50' length overall. Equations of the type y=a (where 'y' is scantling in inches, N is cubic numeral in ft³ and 'a', 'b' are constants) are fitted to the scantling tables (applicable to vessels 50’ and above) available from USA, Newfoundland, Denmark, France and Scotland and they are found to represent the regulations accurately. These lines are corrected for standard frame and beam spacing and molded/sided dimensions to bring them on a common basis for comparison and minimum scantling lines for the main structural members are derived. These lines are extended to cover the range 30' to 50' which is generally outside the range of the above regulations

Time-Varying Sliding Mode Control for ABS Control of an Electric Car

Controller design for the Anti-Lock Braking System (ABS) of a wheeled vehicle is a challenging task because of the complex and nonlinear nature of the tyre-road interaction. An efficient ABS controller should be capable of maintaining the wheel slip at an optimal value, which is suitable for the particular road conditions experienced at a given instant in time, preventing the wheel from locking while braking. Many controller designs in the literature track either an optimal slip which is assumed constant or are not supported by experimental validation or simulation testing with higher order models. This paper first presents an ABS system based on a conventional Sliding Mode Control (SMC). The performance of this controller is tested on an experimental vehicle. The results are compared with simulation results obtained with both a quarter car model and a full-car model built in the Matlab/Simulink environment. The performance of this controller is improved by effective state estimation using a Sliding Mode Differentiator (SMD) where the results are benchmarked with an implementation using an Extended Kalman Filter (EKF). The paper then presents a controller based on Time-Varying Sliding Mode Control (TV-SMC) which tracks an optimal slip trajectory