A Novel Approach to Enhance TCP Throughput in Wireless Sensor Networks

Wireless sensor network consisting of a large number of distributed sensor nodes is widespread to controlling and monitoring environmental conditions and in recent years many applications in various fields of industrial, military, agricultural, and medical and other oil industry is allocated. Hence a lot of research is done to enhance their performance.

A sensor network has multi hop adhoc architecture. It means the source node couldtransmit to destination node by the aid of intermediary node. Each node can be either as a router to determine the path, or a (source/destination node.

Node movement is caused Routing algorithms be one of main challenging. This multi hop communication uses proactive routing algorithm like DSDV or reactive routing algorithm like AODV and DSR. Furthermore the resource limitation and havingerror prone wireless channel are their another main challenging. These problems cause decreasing the wireless sensor network performance. This paper addresses a modified version of TCP congestion avoidance mechanism to improve performance over error prone channels of sensor network.

A Novel Approach to Enhance TCP Throughput in Wireless Sensor Networks

Wireless sensor network consisting of a large number of distributed sensor nodes is widespread to controlling and monitoring environmental conditions and in recent years many applications in various fields of industrial, military, agricultural, and medical and other oil industry is allocated. Hence a lot of research is done to enhance their performance.

A sensor network has multi hop adhoc architecture. It means the source node couldtransmit to destination node by the aid of intermediary node. Each node can be either as a router to determine the path, or a (source/destination node.

Node movement is caused Routing algorithms be one of main challenging. This multi hop communication uses proactive routing algorithm like DSDV or reactive routing algorithm like AODV and DSR. Furthermore the resource limitation and havingerror prone wireless channel are their another main challenging. These problems cause decreasing the wireless sensor network performance. This paper addresses a modified version of TCP congestion avoidance mechanism to improve performance over error prone channels of sensor network.

Characterization and Effect of Anatase on Nano- Hydroxyapatite

Studies have shown that microcrystalline HA is known as a substitute "good-builder" with higher calcium absorption. It is a charge of second-generation calcium derived from bovine bone. And it is more effectivethan calcium carbonate in slow bone loss.The composition of the mineral HA stoichiometric be expressed as Ca10 (PO4) 6 (OH)2 with a Ca / P = 1.67 relationship, while the HA deficient in calcium (CDHA) is CA9 (HPO4) (PO4)5(OH), with Ca / P = 1.50. The latter is the one that is considered the most similar to human bones.Biocompatibility tests natural HA (bovine base) and titanium dioxide show regeneration and capillarity after a few weeks.

Nanometric and stoichiometric hydroxyapatite was prepared by wet via. Later, TiO2 anatase was added. The analysis was made on powder with heat treatment at 680°C in Aratmosphere (HA cc) and pills. The powders were subjected to UP and CIP to form pills [7]. The pills %HAcc+%TiO2 were sintered at 850°C. HA cc and TiO2 median size were 175.9 and 293.6 nm, respectively. Using other technique, Kumar et al. [8] reported hardness and elasticity of 15.1 and 0.405 GPa by nano-indentation for a load of 100 mN over a coating of subsequent layers of %HA%TiO2 (25%HA75%TiO2, 50%HA50%TiO2, 75%HA25%TiO2 and HA). These layers were sintered at 900°C during a few minutes with functionally graded successfully. Before, HA was calcined at 800°C for 2 h. HA and TiO2 median size are 7.46 and 1.37 μm, respectively.

Causes and Remedies of Batch to Batch Shade Variation in Dyeing Textile Floor

Dyeing is the prime section of textile where coloration is performed in the textile substrates. In dyeing lots of problems arise among which shade variation is most unexpected and important problem. Whenever a fault like shade variation happens during dyeing, the process has to be logged behind, thus promoting some loss in productivity. It is extremely important for the dyeing companies to maintain a higher level of quality to dyed fabrics for maintaining good relationship with the buyers and other fellow companies. Batch to Batch runningshade in dyeing carries out a great importance in the textile sector. Textile sector is a leading field of socio-economic activity, regarding its technological state, economical efficiency and social interaction. The faults like shade variation will make the quality down along with the production rate and reputation of the organization.

Shade is the depth of color or dyes percentage on to the fabric. Shade is expressed in percentage of dye amount in unit mass of fabric. Shade matching depends on theaccuracy of the man's eye. Shade accuracy varies to the visual sensation of dyeing master to dyeing master or person to person. So, experienced dyeing master or expert is needed for this purpose. Besides the manual shade matching system recently computer aided data color is also used for the measurement of shades accurately like as spectroPHotomete.

Orthostatic Stress Induced Changes in Heart Rate Variability, Pulse Transit Time and QRS Duration

Cardiovascular disease (CVD) is the leading cause of death in United States. Various parameters can provide useful insight into the health of cardiovascular system. Heart rate variability (HRV) can be used to determinethe level of stress during daily activity. QRS complex width has been shown to predict risk of sudden cardiac death and increased mortality in patients with congestive heart failure.

Pulse transit time (PTT) can provide information about arterial stiffness, and pulsetransit time variability (PTTV) can be used as a marker of blood pressurevariability (BPV). Both arterial tone and BPV are risk factors for CVD. Previous studies had looked at these parameters independently and there is no information about their interaction. Our objective is to study the changes in HRV, QRS duration and PTT by orthostatic stress. We are going to study the effect of orthostatic stress and interaction of these parameters using data collected from a subject population. We will also investigative population characteristics based changed in these parameters.