703 research outputs found

    Smart driving : a new approach to meeting driver needs

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    The use of machine learning algorithms in different automated applications is increasing rapidly. The effectiveness of algorithms performances helps the user to operate their machine accurately and on time. Road sign classification is a very common type of problem for an automated driving support system. In this research, road speeding measure and sign identification is conducted using four popular machine learning algorithms to develop a smart driving system. This system informs forward-looking decision making and the initiation of suitable actions to prevent any future disastrous events. The robustness of the classification algorithms is examined for classification accuracy through 10-fold cross validation and confusion matrix. Experimental results proofs that the accuracy of Support Vector Machine (SVM) and Neural Network (NN) is almost 100 % and it is very promising compared to the earlier research performance. However, in terms of computational complexity NN is a slower classifier. Therefore, the experimental results suggest that SVM can make an effective interpretation and point out the ability of design of a new intelligent speed control system

    The fishery, biology and stock assessment of jew fish resources of India

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    Sciaenids are one of the major component of the demersal trawl The total catch of this resource during 1990-94 period was 1.50,142 t contributing 8.86% to the demersal catch of India. A number of species are found in different states of India. Of which biological and stock assessment studies were made on eleven important species. Crustaceans and fish appear to be the chief food in Juvenile and adult stage respectively. Most of the species have a protracted spawning season. Among all the species studied the largest asymptotic length was estimated for O.ruber from Tuticorin and the smallest for J. sina from Cochin. The highest Z of 7.59 was recorded for K. axillaris from Chennai and the lowest was for O. cuvierifrom Mumbai. The average exploitation rate (E) and the Lc/ Lao was 0.62 and 0.53 respectively. The present yield is 91.222 t and the MSY is 1.42,613 t for all the species taken together. The exploitation rate for almost all the stocks in the states appears to be more than the optimum leve

    Major and minor fisheries harbours of India. 6. The fisheries harbour and fishery at Tuticorin

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    The Tuticorin Fisheries Harbour Is one of the old and important fishery ports of India located on the southern Tamil Nadu coast and on the western side of the Gulf of Mannar. Now owing to its commercial and economic importance from the marine fisheries point of view it is considered as one of the major fisheries harbours on the east coast of India. The harbour was constructed at a cost of Rs. 2.1 crore in 1968 in a total area of 17 acres, out of which the berthing area is 2.7 acres. This harbour has a berthing facility to accommodate 450 medium sized mechanised wooden trawlers. The total length of the jetty is 800 m and the depth in the area of berthing is 3m

    Major and minor fisheries harbours of India. 8. Fisherries harbours along the coasts of North Andhra Pradesh, Orissa and West Bengal

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    The present account gives information about the three major and five minor fisheries harbours along the coasts of north Andhra Pradesh, Orissa and West Benga

    Starfire Optical Range 3.5-m telescope adaptive optical system

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    A 941 channel, 1500 Hertz frame rate adaptive optical (AO) system has been installed and tested in the coude path of the 3.5m telescope at the USAF Research Laboratory Starfire Optical Range. This paper describes the design and measured performance of the principal components comprising this system and present sample results from the first closed-loop test of the system on stars and an artificial source simulator

    Directed evolution of a magnetic resonance imaging contrast agent for noninvasive imaging of dopamine

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    The development of molecular probes that allow in vivo imaging of neural signaling processes with high temporal and spatial resolution remains challenging. Here we applied directed evolution techniques to create magnetic resonance imaging (MRI) contrast agents sensitive to the neurotransmitter dopamine. The sensors were derived from the heme domain of the bacterial cytochrome P450-BM3 (BM3h). Ligand binding to a site near BM3h's paramagnetic heme iron led to a drop in MRI signal enhancement and a shift in optical absorbance. Using an absorbance-based screen, we evolved the specificity of BM3h away from its natural ligand and toward dopamine, producing sensors with dissociation constants for dopamine of 3.3–8.9 μM. These molecules were used to image depolarization-triggered neurotransmitter release from PC12 cells and in the brains of live animals. Our results demonstrate the feasibility of molecular-level functional MRI using neural activity–dependent sensors, and our protein engineering approach can be generalized to create probes for other targets.Charles A. Dana Foundation. Brain and Immuno-ImagingRaymond and Beverley Sackler FoundationNational Institutes of Health (U.S.) (grant R01-DA28299)National Institutes of Health (U.S.) (grant DP2-OD2441)National Institutes of Health (U.S.) (grant R01-GM068664)Jacobs Institute for Molecular Engineering for Medicine. Jacobs Institute for Molecular Engineering for MedicineNational Institutes of Health (U.S.) (grant R01-DE013023

    Energy Comparison Between Conventional and Chilled Water Thermal Storage Air Conditioning Systems

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    During the summer of previous years, Kuwait faced a series of power shortages emphasizing the need for urgent commissioning of power generation projects. It is estimated that the demand for electricity is growing at an average of 6.2% per year, encouraged by government subsidies and driven by the rapid and continual expansion in building construction, urban development, and the heavy reliance on Air Conditioning (AC) systems for the cooling of buildings. The Chilled Water Thermal Storage (CWTS) system is one of the available techniques that can be utilized to reduce peak electricity demand of buildings when national electricity consumption is at its highest level. This paper demonstrates that the use of CWTS system reduces the peak power demand and energy consumption of AC systems for design day conditions by 36.7% - 87.5% and 5.4% - 7.2%, respectively. This reduction depends on selected operating strategies as compared with conventional AC system. Furthermore, results show that the annual energy consumption of CWTS systems decreases by between 4.5% and 6.9% compared with conventional systems, where chillers and pumps significantly contribute to this reduction

    Examining malpractice in the education context

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    Malpractice is a dereliction of professional duty or a failure to exercise an ordinary degree of professional skill or learning by rendering professional services which results in injury, loss or damage. This study probed into the questions:(2)whatare the types of educational malpractices in the Philippine education system; and (2) who are mostly guilty of these offenses? Data were gathered by downloading court cases and newspaper articles. A total of ten online court casesinvolving teachers, parents, students, school administrators, and principals were included.Coding was done by identifying the emerging themes per cluster. Findings indicated that offenses can be clustered into two: corruption and misconduct. Corruption cluster includes offenses rangingfrom illegal collection by the teachers from the studentsto the misuse of funds by the school administrators. On the other hand, the misconduct cluster includessexual abuse targeted towards students by the teachers, and abuse of power by the school administrators towards the teachers. Data revealed that some cases involving principals whose offenses include misuse of funds and abuse of powerwere dismissed. Furthermore, involvement of principals wasunder-reported due to certain interfering reasons like fear, doubt or hesitation, or carelessness on the part of those who file the cases or as a result of the misleading or scheming practices of the offenders. On the other hand, abuses and minor offenses committedby the teachers were magnified. Among the teachers charged of malpractice in education, only one was found not guilty. This led to the creation of a typology that highlights the forms of offenses, the offenders and the offendedas well as the results of the investigation of the cases. . Comparatively speaking, this may be attributed to the lack of power, authority and influence teachers have against principals and other school administrators

    Evaluate the causes of Malwatthu Oya flood: a historical study on Wessagiriya GS Division

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    Flooding is one of the most destructive natural hazards which causes high-intensity rainfall events and massive floods and the condition is common in some parts of Sri Lanka. This study has been conducted on the Malwathu Oya flood which is Flowing through the Wessgiriya Grama Niladhari Division in Anuradhapura District. Malwathu Oya basin is the second-largest catchment among the river basins in Sri Lanka (3284 km2), and one of the most widely used sources of water for irrigation, water supply, and other diversions in the North Central province. The river basin experiences water scarcity during the dry periods and the downstream areas of the catchment are flooded during the wet period. The main objective of the study was to assess the causes of the Flooding of the Malwathu Oya River. Accordingly, the primary and secondary data were explored to achieve the study objectives. Based on that, the Study is presented the flood characteristics identified through the Massive Floods that Occurred from 2014 to 2015 and find out the causes of the Malwatthu Oya Flood. Therefore, the primary data were obtained from Observation, Questionnaire, and Systematic Interview, Focus Group Discussion (FGD), and Secondary Data were collected from the Divisional Secretariat Division, Department of Irrigation, Department of Meteorology, Disaster Management office. Based on the result of the study examined the causes of the Malwattu Oya flood are that surrounded lowest land, the structure of the soil, weaknesses of water reservoir dams, some human activities that trigger the flood, high level of runoff, the connection between the Malwattu Oya river basin and Nachanthuva reservoir, unplanned drainage system, soil excavation, an excessive settlement near to river basin, etc. Therefore this study is significant to reduce the future flood hazard in the study area
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