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Sublimation-grown 3C-SiC crystals were implanted with B ions at elevated temperature (400 °C) using multiple energies (100 to 575 keV) with a total dose of 1.3×1017 atoms/cm2 in order to form intermediate band (IB) in 3C-SiC. The samples were then annealed at 1400 °C for 60 min. An anomalous area in the center was observed in the PL emission pattern. The SIMS analysis indicated that the B concentration...
As named data networking (NDN) continues to evolve into a mature and production network, a robust and efficient congestion control mechanism has become a fundamental requirement for the success and wide deployment of NDN. In this paper, upon exploring the unique hop-by-hop Interest forwarding feature, based on the CUBIC, we develop a novel congestion control mechanism for NDN. Our congestion control...
The image such as CT scan, x - ray image, CCTV videos and hand phone's camera is kind of low resolution image producers. Digital camera captured the continuous scenes and transform into discrete presentation in term of space and intensity. In sampling process it may create aliasing and information lost at frequency below the Nyquist sampling rates. Therefore the image suffered with an ill-posed problem...
Efforts were made to integrate emerging Vehicular Ad-hoc Network (VANETs) with the mobile internet architecture through Road Side Unit (RSU) to enhance its operational capabilities for safety and non safety applications. Transmission Control Protocol (TCP) is one of the prominent protocol that contributes a considerable amount of internet traffic as the vast majority of internet applications such...
Resampling is used to calculate pixel values when one raster grid is fitted to another. High-resolution remote sensing satellite images contain more information in the discrete samples and after resampling process, it is desirable that the reconstructed image should maintain the same sharpness as the original image. Although several techniques are available, but it is essential to determine the best...
A new process has been developed to prepare nanocrystalline BaTiO3 at room temperature and atmospheric pressure. The experimental results show that cubic BaTiO3 nanoparticles can be prepared even at room temperature (25 °C). These cubic BaTiO3 nanoparticles are irregular quasi-spheres with the size ranging from hundreds of nanometers to tens of nanometers as the temperature is increased from 25 to...
Effective congestion control is one of the most critical issues in the utility efficiency of network resources. Because of better scalability and higher flexibility, CUBIC has become a widely deployed TCP congestion control protocol in high-speed long-delay networks and it is the current default algorithm implemented in the Linux kernel. However, the behavior of CUBIC is not fully understood. In this...
CUBIC is one of the most popular version of TCP being used by many flavours of Linux now a days. CUBIC [6] is an enhanced version of BIC TCP (Binary Increase Congestion Transmission Control Protocol) ??. To enhance the scalability of TCP in long distance network scenarios, CUBIC modified the linear window growth function of standard TCP to cubic [6] function. During communication, CUBIC decreases...
In this paper, we further evaluate our previously-proposed NewRAPID by comparing with TCP CUBIC and TCP RAPID in the following aspects: intra-protocol fairness, inter-protocol fairness, and convergence time. The result shows that TCP CUBIC provides more intra-protocol fairness than others because of its stability characteristic while TCP RAPID and TCP NewRAPID provide almost the same. Our designed...
Thermodynamically non-equilibrium phase transformation in ultra thin HfO2 films was investigated. Amorphous HfO2 is crystallized into stable monoclinic phase via metastable cubic one. It was also demonstrated that the k-value of cubic-HfO2 was ∼50. Kinetic analysis according to Mehl-Avrami-Johnson law pointed out the cubic-HfO2 is stable for practical use thanks to the suppression of monoclinic nucleus...
Satellite communication has become important in the current global data communication due to its large coverage area. Satellite links are affected by two major concerns: long propagation delays, and relatively high error rates. Standard TCP congestion control variants were not designed to address these challenges. They generally depend on round trip times (RTTs), and hence suffer heavily if the RTTs...
The Internet has recently been evolving from homogeneous congestion control to heterogeneous congestion control. Five years ago, Internet traffic was mainly controlled by the standard TCP AIMD algorithm, whereas Internet traffic is now controlled by many different TCP congestion control algorithms, such as AIMD, CUBIC, CTCP, and FAST. However, there is very little work on the performance and stability...
TCP is the main and most widely used transport protocol for reliable communication. Because of its widespread need, researchers have been studying and proposing new TCP variants trying to improve its behavior towards congestion to make it use the most available bandwidth while preserving a logical level of fairness towards other protocols. This paper aims at evaluating and comparing the performance...
Research on droplet drift distance is one important part of precision agriculture, there are many factors influencing drift distance such as environment conditions and physical property of droplets group. According to previous research results based on other agricultural experts, those factors involving temperature, relative humidity of environment, velocity of wind, droplet sizes, discharge height...
The ability to accurately predict the effect of cooling on gas turbine blades is essential in designing the blades that will operate at extremely high temperature. The standard κ-ε linear eddy viscosity model is known to be inaccurate in predicting highly complex flows. Thus, a relatively new cubic κ-ε non-linear eddy viscosity model was tested to ascertain whether it has improved the performance...
This paper analyses performance of competing TCP connections when running over different return channel satellite terminals (RCSTs) and competing for DVB-RCS return link bandwidth through DAMA mechanisms. A test campaign has been performed over a Linux-based satellite emulator supporting a multi-RCST configuration in a star-based architecture, with the main goal to evaluate TCP behavior in terms of...
We present active measurement results from a commercial IEEE 802.16/WiMAX-based network, with primary focus on TCP performance. We compare four TCP variants, namely New Reno, Cubic, Vegas and Veno, using throughput, round-trip time (RTT), and retransmission rate metrics. While all TCP variants achieve similar throughput, they do so in different ways, with different impacts on the network performance...
This paper investigates the performance of support vector machines with linear, cubic and radial basis function (RBF) kernels in the problem of emotion recognition from physiological signals. Five physiological signals: blood volume pulse (BVP), electromyography (EMG), skin conductance (SC), skin temperature (SKT) and respiration (RESP) were selected to extract 30 features for recognition. Support...
Transmission control protocol (TCP) provides reliable end-to-end communications between any two devices on the Internet. Slow start mechanism is used when a source machine starts sending data to a destination, or when a TCP connection suffers packet loss and a retransmission timeout has occurred. Congestion avoidance mechanism is then used to transmit information with sustainable data rate from the...
The proposed work, in this paper, is concerned with an efficient technique of curve fitting using cubic splines. The technique has various phases including extracting outlines of images, detecting corner points from the detected outline, addition of extra knot points if needed. The last phase makes a significant contribution by making the technique automated. It uses the idea of knot insertion in...
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