Lie symmetries, Kac-Moody-Virasoro algebras and integrability of certain (2+1)-dimensional nonlinear evolution equations

In this paper we study Lie symmetries, Kac-Moody-Virasoro algebras, similarity reductions and particular solutions of two different recently introduced (2+1)-dimensional nonlinear evolution equations, namely (i) (2+1)-dimensional breaking soliton equation and (ii) (2+1)-dimensional nonlinear Schr\"odinger type equation introduced by Zakharov and studied later by Strachan. Interestingly our studies show that not all integrable higher dimensional systems admit Kac-Moody-Virasoro type sub-algebras. Particularly the two integrable systems mentioned above do not admit Virasoro type subalgebras, eventhough the other integrable higher dimensional systems do admit such algebras which we have also reviewed in the Appendix. Further, we bring out physically interesting solutions for special choices of the symmetry parameters in both the systems

Social transformations of rural communities through ecotourism : a systematic review / Velan Kunjuraman and Rosazman Hussin

This review paper observes the gap in the tourism literature, specifically on issues regarding communities’ qualities of life through eco(tourism) activities in both developed and developing countries. Based on the previous literature, it was found that the term ‘social transformation’ is often overlooked in the literature and less focused by tourism researchers. The issue of social transformation in tourism development is crucial to be studied in order to understand the communities’ quality of life when engaging in tourism activities and how they manage impacts. In this paper, literature on community participation in tourism activities and the issue of tourism impacts towards communities’ qualities of life is also studied. The main contribution of this paper is the discussion on the issue of social transformations of local communities through tourism is scarce and proposes the need to study by having some successful case studies in both developed and developing countries

EventFlow: Network Flow Aggregation Based on User Actions

Network flow monitoring is being supplemented with an application flow visibility to provide more detailed information about network traffic. However, the current concept of flows does not provide a mechanism to keep track of semantic relations between individual flows that are created as a part of a single user action. We propose an extension to the flow measurement, called EventFlow, which allows to preserve relations between HTTP and DNS application flows that are a part of single user action, most typically browsing a web page. We describe an architecture of the EventFlow extension and its limitations. A prototype implementation of the EventFlow is introduced and evaluated on a packet trace from an ISP network. We show that a significant number of flow records can be recognised as a part of a single user action

The Future of Network Flow Monitoring

Flow monitoring has been used for accounting and security for more than two decades. This paper describes how it was developed, what is its current status, and what challenges can be expected in this field in the following years

Reduction of Air Pollution in Industries

For normal and healthy living conducive environment is required by all living things, including humans, livestock, plants, micro-organisms and the wildlife. The favorable unpolluted environment has a specific composition. The certain substances are present in concentrations which can cause undesirable effects on this specific composition. When this composition gets changed by addition of above substances, the environment is called polluted environment and the substances polluting it is called pollutants. It includes gases, particulate matter, radioactive substances etc keep these things in the mind, and following project is analyzed. The rapid industrialization has disturbed the balance of natural atmosphere. In fossil fuel burning coal, oil, natural gas and gasoline are consumed by industry. Power plants and automobiles increasing the atmospheric store of carbon by 6.1Gt of carbon each year. In 1850 atmospheric carbon monoxide was about 280ppm (parts per million). In 1990's it was about 385ppm at present more than 450ppm. As like other contaminants caused by various sources also increased in the atmosphere. To control this concentration of pollutants the emission rate should be restricted to permissible levels by each and every industry. Even though, the atmosphere as several built in self cleaning process, control of contaminants at their source is a more desirable and effective method through preventive or control technologies. In this aspect, incorporation of CNS precipitator with two different compactable models in the design of plant layout is studied. When the coal is ignited, the electrostatic force is introduced which separate the unwanted pollutants from exhausted gas based on the theory of electrolytic conductance. Additionally, the rate of liberation of oxygen to atmosphere is enhanced. The exhaustion of pollutants after passing through CNS precipitator by changing terminals analysis helps the conformation of removal of undesirable substances is explained elaborately. Finally, the ultimate aim of the project is “to control the air pollution and increase the liberation of oxygen to the atmosphere from exhausted gas. Keywords: Air pollution, Environment, Industrialization, CNS  precipitator, Electrostatic force

Challenges of community-based homestay programme in Sabah, Malaysia: hopeful or hopeless?

This paper explores the challenges faced by the participants of community-based homestay programme in Dagat Village of Lower Kinabatangan-Segama Wetlands of Sabah, Malaysia. Primary data were gathered through field observation and in-depth interviews conducted with the participants in September 2015 and March 2016. The results of this study revealed that the tourism activities based on homestay programme in Dagat Village have the potential to be developed because of its vast natural resources but it was found that the local community faced many challenges during their homestay operation at the study site, which include lack of infrastructure development, poor promotional activity, lack of trained human resource, safety and security issues, poor local leadership, and lack of tourism management experiences that cause the homestay programme operation to be unsustainable. Therefore, this study recommends the importance of collaboration and partnerships among tourism stakeholders in order to achieve a successful ecotourism development