819 research outputs found
Sustainable Resources and Sustainable Development
The concept of sustainability has become the current answer to absolving the world of its in the 21th centuries .since it is conceptualization, there has been a barrage of investigation and literature on the vagueness and ambiguity of its definition and applicability. There are two main opposing school of thought the pessimists, usually ecologist and other scientist Who are equally convinced that the earth cannot support the world demand of renewal resources on the other side are the optimist the economist who are equally convinced that the earth with market incentives, appropriate public policy, material substation, recycling and new technology can satisfy the renewed and improve the quality of human welfare, of this and following generation indefinitely. Both view and supporting argument are explored in context of sustainable development. with empirical evidence of ecosystem evolution and resources maintenances sustainable resources use is basically dependent on the outcome of cost increasing effect of depletion and cost reducing effect of new technology .sustainability is therefore seen a dynamic concept based on attitude and flexibility not a final solution to utopia on earth
Phishing Sites Detection from a Web Developer’s Perspective Using Machine Learning
The Internet has enabled unprecedented communication and new technologies. Concomitantly, it has brought the bane of phishing and exacerbated vulnerabilities. In this paper, we propose a model to detect phishing webpages from a web developer’s perspective. From this standpoint, we design 120 novel features based on content from a webpage, four time-based and two search-based novel features, plus we use 34 other content-based and 11 heuristic features to optimize the model. Moreover, we select Random Committee (Base learner: Random Tree) for our framework since it has the best performance after comparing with six other algorithms: Hellinger Distance Decision Tree, SVM, Logistic Regression, J48, Naive Bayes, and Random Forest. In real-time experiments, the model achieved 99.4% precision and 98.3% MCC with 0.1% false positive rate in 5-fold crossvalidation using the realistic scenario of an unbalanced dataset
Uniqueness of Normal Forms is Decidable for Shallow Term Rewrite Systems
Uniqueness of normal forms (UN=) is an important property of term rewrite systems. UN= is decidable for ground (i.e., variable-free) systems and undecidable in general. Recently it was shown to be decidable for linear, shallow systems. We generalize this previous result and show that this property is decidable for shallow rewrite systems, in contrast to confluence, reachability and other properties, which are all undecidable for flat systems. Our result is also optimal in some sense, since we prove that the UN= property is undecidable for two superclasses of flat systems: left-flat, left-linear systems in which right-hand sides are of depth at most two and right-flat, right-linear systems in which left-hand sides are of depth at most two
Community Response, Preparedness and Disaster Risk-Reduction A Case Study of Manipur Floods 2015
The flood of 2015 affected entire Thoubal district and parts of Chandel district in Manipur state of India. According to the government reports, nearly 600 square kilometers of area with over 500,000 populations were affected in the Thoubal and Chandel districts. Majority of the population in the flood affected area are farmers, whose paddy crop cultivation was destroyed and it also affected crop production for the next year due to acute shortage of seeds. Fisheries farms got submerged and people lost livelihood opportunities. Animal life also suffered due to inundation of inhabited plain areas for several days. The market and shops were closed and many were submerged for at least one week. Since it was the season for agricultural plantation, the farmers also suffered from food security for the entire season. The present study examines causes and consequences that lead to the worst floods of July- August 2015 in the plains of Manipur state. The paper also examines the level of local community response towards prevention and preparedness and disaster risk-reduction. The study indicates the lack of protective and preparedness measures, while dealing with such magnitude of floods hazard
Colchicine induced polyploidy in coriander (Coriandrum sativum L.)
The aim of this study was to find a suitable treatment combination that would effectively induce polyploidy in Coriander. In this study, colchicine concentrations and treatment durations were examined for improving the induction of polyploidy. The combinations of three colchicine concentrations such as 0.1%, 0.2% and 0.3% for 3 hrs per day for two to three days were tested in coriander. Three tetraploids were obtained in 0.2% colchicine treated population. The treatment of colchicine (cotton swab method) seedling with 0.2% for 3 days was suitable for induction of chromosome doubling. The control plant showed eleven bivalents (2n=2x=22) and polyploid plant showed twenty two bivalents (2n=4x=44) at diakinesis/metaphase-I in most of the PMCs. Anaphase-I distribution of chromosomes was normal (11:11) in control and in tetraploids distribution of chromosomes was (22:22) at each poles. In contrast with the normal plants, those treated by colchicine treatment often showed changes in height and width, in thickness of branches, in size, shape, texture of leaves, flowers, size of fruits and seed setting
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