Design and Implementation of a Distributed Middleware for Parallel Execution of Legacy Enterprise Applications

A typical enterprise uses a local area network of computers to perform its business. During the off-working hours, the computational capacities of these networked computers are underused or unused. In order to utilize this computational capacity an application has to be recoded to exploit concurrency inherent in a computation which is clearly not possible for legacy applications without any source code. This thesis presents the design an implementation of a distributed middleware which can automatically execute a legacy application on multiple networked computers by parallelizing it. This middleware runs multiple copies of the binary executable code in parallel on different hosts in the network. It wraps up the binary executable code of the legacy application in order to capture the kernel level data access system calls and perform them distributively over multiple computers in a safe and conflict free manner. The middleware also incorporates a dynamic scheduling technique to execute the target application in minimum time by scavenging the available CPU cycles of the hosts in the network. This dynamic scheduling also supports the CPU availability of the hosts to change over time and properly reschedule the replicas performing the computation to minimize the execution time. A prototype implementation of this middleware has been developed as a proof of concept of the design. This implementation has been evaluated with a few typical case studies and the test results confirm that the middleware works as expected

The General Context of a dynamic agricultural sector in the Red River Delta

224pThis chapter presents the status of the agricultural sector in the Red River Delta in Vietnam. The sociopolitical environment and development policies are outlined. Thai Binh's development priorities are discussed. The contrasts in the natural environment of the Red River Delta are presented (climate, soil types and agroecological units). The importance of the hydraulic system in the Delta's agriculture is discussed. The intensive vegetable production, dominated by rice cultivation is described. The livestock production, with emphasis on the booming pork commodity chain, is dealt with. An overview of the pig production subsector is given. The pig producers and their various breeding systems are outlined. The husbandry of other animals are discussed (poultry, ruminants and fish). Changes in the integrated production systems are discussed

The E3P Diagnostic Project : An Introduction about Sustainable Pig Production in Vietnam

224pThis chapter describes the current status of Thai Binh province in Vietnam and its agricultural development plans for 2010. The environmental and economic impacts of pig production are discussed. The various stakeholders and their active involvement in agricultural production are analysed. In addition, an innovative approach to sustainable development of animal produce commodity chains in northern Vietnam, is described. The 12-month E3P Project (Environmental Protection and Pig Production) was aimed to establish baseline work for designing and implementing a geographical information system. A large proportion of unknown factors concerning the issue of effluents in the province was studied at the farm, communal and district, and on a scientific levels. These unknown factors justify the regional diagnosis presented by the E3P Project

A comparison of Indonesian and Vietnamese approaches to agriculture in the ASEAN-China FTA

Both Indonesia and Vietnam, as members of ASEAN, have negotiated a free trade agreement with China (ACFTA). ASEAN Member States can independently negotiate their tariff reductions. Both countries are generally aware of the opportunities access to the large Chinese market may present, but both are concerned to differing degrees about being flooded with Chinese imports, including agricultural products. As the time for implementation approaches, Indonesia has expressed a desire to renegotiate its tariff reduction schedules to protect sensitive sectors, including agriculture. By contrast, Vietnam, just over the border from China and with a history of informal trade, seems more accepting of the prospects. A global general equilibrium model, GTAP, is used to compare the potential impacts of the ASEAN-China Free Trade Agreement on the Indonesian and Vietnamese agricultural sectors. Tariff line data are aggregated to eight primary and four processed agricultural sectors. This enables the differential impact of separate sensitive sectors for Indonesia and Vietnam to be identified. The simulated results following full implementation indicate both countries would improve their trade and welfare if the agreement is implemented as negotiated and tariff cuts are effective, although the extent of exemptions for sensitive products represent differing degrees of missed opportunities for each country. At the sectoral level, both countries can expect some reductions, compared with the baseline, in output of some agricultural sectors, but generally these changes are relatively small unless significant non-tariff barriers are addressed. From an economic perspective, structural adjustment should not be constrained in such circumstances.International Relations/Trade,

Basics Telecommunication System Covers Working Principles and Emerging Problems

This article discusses the basics of the telecommunications system covering developments, working principles and emerging problems in telecommunications. The telecommunications system is all elements of both telecommunications infrastructure, equipment, facilities and infrastructure, as well as telecommunications operators, so that long-distance communication can be carried out. During the journey the information will pass through various media with different characteristics. So that it allows the occurrence of high delays and large packet loss, all of which will reduce the quality of the information received. The quality of the transmission medium determines the quality of the information received. Because as long as it is in the media, it is certain that the information will experience damping which will reduce the quality of the information. In order to communicate properly, the channel provided is not only physical media but also logical lines (frequency channels), considering that these frequency channels are expensive and limited

Optimal operation of Hoa Binh reservoir for flood control on Hong-Thai Binh river system

In the paper the optimal operation of Hoabinh reservoir for flood control on Hong–Thai Binh river system is presented. The findings show that in the flood season in 1996 if the operation of gates and outlets of Hoa Binh reservoir was made base on the calculated release, the water level at Hanoi would be 12.3 m and the water level of Hoa Binh reservoir would be 98 m. So the calculated release from Hoabinh reservoir in August 1996 can be considered as optimal in the mean that the water level at Hanoi can be controlled and the Hoabinh reservoir still have necessary pool for controlling the next floods