A Java implementation of Coordination Rules as ECA Rules

This paper gives an insight in to the design and implementation of the coordination rules as ECA rules. The language specifications of the ECA rules were designed and the corresponding implementation of the same using JAVA as been partially done. The paper also hints about the future work in this area which deals with embedding this code in JXTA, thus enabling to form a P2P layer with JXTA as the back bone

Liouville numbers, Liouville sets and Liouville fields

Following earlier work by E.Maillet 100 years ago, we introduce the definition of a Liouville set, which extends the definition of a Liouville number. We also define a Liouville field, which is a field generated by a Liouville set. Any Liouville number belongs to a Liouville set S having the power of continuum and such that the union of S with the rational number field is a Liouville field.Comment: Proceedings of the American Mathematical Society, to appea

Liouville Numbers and Schanuel's Conjecture

In this paper, using an argument of P. Erdos, K. Alniacik and E. Saias, we extend earlier results on Liouville numbers, due to P. Erdos, G.J. Rieger, W. Schwarz, K. Alniacik, E. Saias, E.B. Burger. We also produce new results of algebraic independence related with Liouville numbers and Schanuel's Conjecture, in the framework of G delta-subsets.Comment: Archiv der Math., to appea

Quality of work life: Perception of college teachers

Several Research Studies in the world have measured the Quality of Work of Employee’s in Industries, Universities, Schools, Government and Non Government Organizations. This research study highlights the quality of work life of college teachers under various dimensions. New Challenges can be faced with employee’s commitment and involvement in achieving organizational goals. This study helps the college teachers to know the level of perception towards QWL and to enhance the same by the educational administrators.. Quality of Work Life is the essential concept of favorable situations in a working environment. The Quality of Work Life facilitates employee’s training opportunities, job satisfaction and working conditions. A better Quality of Work Life improves the growth of the employee’s along with the organization growth. The universe of the study includes 12 colleges located within the Tiruchirappalli city limit and 1279 college teachers were working during May 2008 – February 2009. A sample of 239 respondents was collected from the universe. The collected data after being coded were analyzed using Statistical Package for Social sciences Research (SPSS) and various statistical tests were applied based on hypotheses and matching variables. There is a significant association between quality of work life total and quality of life in teaching environment total. It shows QWL of college teachers is in low level.Quality of Work Life: College Teachers; Perception

Nonintegrability of (2+1)-dimensional continuum isotropic Heisenberg spin system: Painlev\'e analysis

While many integrable spin systems are known to exist in (1+1) and (2+1) dimensions, the integrability property of the physically important (2+1) dimensional isotropic Heisenberg ferromagnetic spin system in the continuum limit has not been investigated in the literature. In this paper, we show through a careful singularity structure analysis of the underlying nonlinear evolution equation that the system admits logarithmic type singular manifolds and so is of non-Painlev\'e type and is expected to be nonintegrable.Comment: 11 pages. to be published in Phys. Lett. A (2006

High-throughput virus-induced gene-silencing approach to assess the functional relevance of a moisture stress-induced cDNA homologous to lea4

The abiotic stress-responsive cDNA database and their expression profiles suggest that stress genes are many and diverse. However, characterization and validation of their functional significance has been a constraint to assessing their role in imparting tolerance. Virus-induced gene silencing (VIGS) is a potential option for assessing the functional significance of stress genes. Here the effectiveness of VIGS to silence the expression of an ABA-responsive lea4 (late embryogenic abundant) gene involved in stress tolerance is documented. In the present study, low moisture-stress protocols were developed in such a way that the plants experienced the desired stress level when silencing the target stress gene using VIGS was at a maximum. The functional relevance of a groundnut (Arachis hypogaea) subtracted-stress cDNA clone putative lea4 was examined by VIGS in tomato. A 400 bp fragment of lea4 was cloned into tobacco rattle virus-based VIGS vector to trigger post-transcriptional gene silencing by Agrobacterium-mediated inoculation in tomato plants. In silenced plants only lea4 transcripts showed a substantial decline, whereas the expression of other known stress-responsive genes such as apx (ascorbate peroxidase) and elip (early light-induced protein) were unaltered. Under moderate moisture stress, the silenced plants showed enhanced susceptibility as measured by cell viability, superoxide radical activity, and cell osmotic adjustment. This approach illustrates the potential benefits of VIGS in identifying functional relevance of low moisture stress-responsive genes. It is also demonstrated that heterologous probes with a fairly high degree of homology to the native genes can be used to study the functional relevance of stress-responsive genes using VIGS

Development of quality control parameters for the standardization of Leaves and bark of Sida acuta Burm.f

Sidha acuta Burm. f belonging to family Malvaceae is a terrestrial, erect shrub which is up to 155 cm tall. The plant is native to Mexico, Central America and Himalayan region of India but has spread throughout the tropics and subtropics. Sida acuta Burm. f is widely distributed in pantropical areas and is widely used as traditional medicine in many cases. Among illnesses the plant is may be used alone or in combinations with other plants to cure fever, skin diseases, snake bites, Hemorrhoids, impotency and for boils and eye cataracts. Although the plant has been screened and suggested for various therapeutic activities its photocomposition remained unrevealed because of very restricted amount of research work carried out. Thus it was thought worthwhile to explore this endangered plant on the basis of various standardization parameters. The present research work deals with the collection, identification, extraction, pharmacognosical and phytochemical investigation of Leaves of Sidha acuta Burm. f

INVESTIGATION ON START-UP CHARACTERISTICS OF CRYOGENIC HEAT PIPES

ABSTRACT Heat pipe is a device which transfers heat from one location to another with a small temperature gradient. Application includes use of cryogenic heat pipe in cooling infrared sensors, laser systems, cryocoolers, thermal control large superconducting magnets and tumor surgery. This paper deals with transient behavior of cryogenic heat pipes with wire mesh and axial grooved wick using nitrogen and oxygen as working fluid. A special liquid nitrogen cryostat has been designed and developed for evaluating the transient behavior of heat pipes at 77 K when the condenser portion is connected to the cold sink externally. In this study, the start-up characteristic of heat pipes is experimentally investigated. Keywords: cryogenic heat pipe, start up behavior. INTRODUCTION A heat pipe is a self-contained structure, which achieves very high thermal conductance by means of capillary circulation. It utilizes the latent heat of the vaporized working fluid for transfer of heat. As a result, the effective thermal conductivity is several orders of magnitudes higher than that of the good solid conductors. As illustrated i

Active Vibration Control of Structures using an Impedance Matching Control Technique

Active vibration control of structures has gained a lot of interest in recent years. This paper presents an active vibration control methodology of a structure using piezoelectric actuators. The proposed methodology is useful in practical applications where the system to be controlled is difficult to model due to the presence of complex boundary conditions. The impedance matching control technique uses a power flow approach wherein the controller is designed such that the power flow into the structure is minimized. The system transfer function is obtained from the experimental collocated actuator/sensor pair data using Eigen Realisation Algorithm (ERA). The controller is designed for the system transfer function according to impedance matching theory. The above approach is targeted towards the vibration control of wind tunnel stings, which suffer from flow-induced vibration. A wind tunnel sting model is designed and fabricated for this study. The real time implementation of the impedance matching controller has been carried out using dSPACE® Digital Signal Processor (DSP) card. The results are encouraging and demonstrate the feasibility of applying this technique in the wind tunne