GROWTH, FOOD UTILIZATION RESPONSES AND SURVIVAL RATE OF INDIAN MAJOR CARP, LABEO ROHITA (HAMILTON) FINGERLINGS UNDER EXPOSURE OF COW URINE DISTILLATE

Objective: The study evaluated the effect of Cow Urine Distillate of different breeds on the growth performance and food utilization of Indian major carp Labeo rohita fingerlings.Methods: Fishes were exposure with different CUD in medium at 0.1% (v/v) as C (Without CUD), T1 (Gir), T2 (Haryana), T3 (Holstein Friesian cross bred) for seven days, a study was conducted. Various growth, food utilization parameters and mortality were examined at 10, 20 and 30 days of post-exposure of CUD.Results: The results showed that Gir CUD was more effective to compare with Haryana and HF cross bred CUD. The maximum growth rate of 0.0160 mg/day-1 was observed in the Labeo rohita fingerlings treated with Gir CUD treated fingerlings when compared with control. The maximum feeding rate of 0.0039 mg/body wt-1/day-1 was observed in the same group. Survival rate of 90% was observed in the same treated group when compared with 60% survival rate in control.Conclusion: Our results indicate that growth parameter and food utilization parameter values were increased significantly due to CUD exposure while comparing with control group. In addition, levels of growth rate, Feed Conversion Rate, Percentage increased body weight and Specific growth rate were also increased in the treatment groups.     Â

Decoupling security concerns in web services using aspects

This paper discusses the Aspect-oriented Framework for Web services (AoF4WS) that supports on-demand context-sensitive security in Web services. Flexible security schemes are needed in many Web services applications where authentication, authorization, etc., can no longer be used in their current form. Security mechanisms are to be customized to the continuously changing requirements of Web services. Examples of this customization concern cryptographic protocol for a specific situation and timeout for user credentials. The AoF4WS uses aspect-oriented programming and frames. Aspects provide flexibility to the framework, and frames adjust aspects to specific requirements. © 2006 IEEE

Context-driven policy enforcement and reconciliation for Web services

Security of Web services is a major factor to their successful integration into critical IT applications. An extensive research in this direction concentrates on low level aspects of security such as message secrecy, data integrity, and authentication. Thus, proposed solutions are mainly built upon the assumption that security mechanisms are static and predefined. However, the dynamic nature of the Internet and the continuously changing environments where Web services operate require innovative and adaptive security solutions. This paper presents our solution for securing Web services based on adaptive policies, where adaptability is satisfied using the contextual information of the Web services. The proposed solution includes a negotiation and reconciliation protocol for security policies

Context-based Semantic Mediation in Web Service Communities

Communities gather Web services that provide a common functionality, acting as an intermediate layer between end users and Web services. On the one hand, they provide a single endpoint that handles user requests and transparently selects and invokes Web services, thus abstracting the selection task and leveraging the provided quality of service level. On the other hand, they maximize the visibility and use rate of Web services. However, data exchanges that take place between Web services and the community endpoint raise several issues, in particular due to semantic heterogeneities of data. Specific mediation mechanisms are required to adapt data operated by Web services to those of the community. Hence, mediation facilitates interoperability and reduces the level of difficulty for Web services to join and interact with communities. In this chapter, we propose a mediation approach that builds on 1) context-based semantic representation for Web services and the community; and 2) mediation mechanisms to resolve the semantic heterogeneities occurring during data exchanges. We validate our solution through some experiments as part of the WSMO framework over a test community and show the limitations of our approach