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For multi-hop wireless networks, we assign channels to communication between terminals. For this assignment problem, modeling using the edge coloring of the graph theory has been proposed. In the modeling, all edges of the graph are assigned colors. In this paper, we assign colors to edges in a subset of the edge set as the other modeling, and we consider the number of assigned colors in the graph...
We propose a threshold configuration and holding time limitation for general telephone calls under trunk reservation control in emergency situations. Our proposed method aims to accept more general calls while required emergency calls are still accepted. With our method, the threshold is configured in consideration of the ratio of traffic intensities which are estimated in advance. Computer simulation...
Association of Radio Industries and Businesses (ARIB) has standardized ARIB STD-T109 for IVC (Inter Vehicle Communications) and RVC (Road to Vehicle Communications) as applications of Intelligent Transport Systems in 700 MHz band. In ARIB STD-T109, IVC and RVC share one channel by employing time division duplex. It is possible to avoid frame collisions between IVC and RVC by this scheme. Moreover,...
(1)First, repeated ultimate game was carried out using a computer simulation. As a result, we confirmed that we never behave rationally as standard economics assumes. (2)Second, on the basis of prospect theory, the risk aversion and seeking tendencies were analyzed in gambling situations. It tended that the participant behaved risk-aversively in a gain condition, and showed a risk-seeking behavior...
Based on event dispatch strategy, a simple simulation method for queue system was proposed, and made some simulation research by using MATLAB software. First, adoption of M/M/1 queuing service system as example, the simulation results are consistent with the theoretical calculation, which confirm the correctness of simulation project. And then, M/M/n queuing service system with same service rules...
This paper presents a new type of heterogeneous network (HetNet) with the intention of achieving both good user throughput performance and lower system power consumption, which cooperatively controls both cell selection offset (CSO) on the cell range expansion (CRE) and the transmission power for pico-eNB (PeNB TP). Average user throughput and the cell edge user throughput are provided as parameters...
The calculations of fullerene C60 in different bases and the interaction of fullerene C60 and C80 with atoms of hydrogen by method DFT were performed. A different quantity of hydrogen molecules in the cavity of fullerenes, and a comparative analysis of the results were considered. The optimal amount of hydrogen molecules in the cavity of fullerenes were identified.
Authors have developed original computer model and related software package which ones use the approach of classical macrospins. The nanodot is divided on magnetic subarea (macrospins) which ones interact with the magnetic tip by magneto-statically. The numerical calculation allows determine the magnetic state and magnetic configuration. This could give exact interpretation of the experimental MFM...
For unstructured peer-to-peer (P2P) networks, we previously proposed an efficient digital content sharing method, in which content searching queries are guided properly to an appropriate peer which is likely to store a replica of target content item, by using query transmission records (TRs) maintained in each peer. In this paper, we improve the conventional method and make it achieve more efficiency...
E investigate the role of nodes when a minimum dominating set (MDS) approach is considered in controlling a network. We present an algorithmic procedure to compute the critical and redundant nodes using the MDS. The theoretical analysis for scale-free networks shows that (1) high-degree nodes tend to be critical nodes and (2) for scaling exponent gamma>2, such probability increases when gamma grows...
The primary objective of the project titled “A Retrospective Oral History of Computer Simulation” is to document the emergence of computer simulation since World War II. We seek to capture the early history of the field through digital videos of interviews with the pioneers whose seminal contributions have had long-lasting impacts on simulation practice and theory. This project involves the following...
This article mainly analyzed the relationship between the WS small-world networks and information dissemination from small world network theory. It discussed the diffusion mechanism of negative information combined with the inherent characteristics of the negative information. And it established negative information transmission model based on the WS small-world network model. Finally, the model was...
Land cover change is the result of interactions and feedbacks between processes operating at different spatial and temporal scales. As human impact on the environment becomes more pronounced, there is growing interest in understanding the effects of environmental and scocio-economic changes on landscape dynamics. Computer simulation models provide a tool for studying the causes and consequences of...
A, pulsed hot dense compact plasma torus (CT) in a Field Reversed Configuration (FRC), of few keV temperature, density (1023−1024) m−3, and a life time of several microseconds is of great interest for fusion research as an alternative to already canonical inertial, magnetic stationary approaches and magnetized target fusion [1–3]. This paper provides a brief description of prototypical experiments...
In this paper, we take the elephant population from a large National Park in South Africa as a typical example to study how to keep population stable. According to approximate age and gender data of the elephants emigrated from the park in the last two years, we develop mathematical models to analyze the survival rate, the age structure, the number of contraception and relocation of the elephant population,...
In this paper, we built a behavior model for the Ubiquitous Display (UD) to provide a situation oriented service to the users in a large-scale public facility. The UD is a mobile-projection robot to support the user with visual information. If the UD provides a service in a public facility, we should assume the possible situations previously. According to the situation, the model should be built in...
A compact construction for nonbinary low-density parity-check (LDPC) codes over GF(q) (q>2) using permutation polynomials (PPs) is proposed in this paper. Following the previous compact construction for binary LDPC codes using quadratic permutation polynomials (QPPs) over integer rings, a QPP whose coefficients are chosen for maximizing the girth is used for determining all the positions of nonzero...
Caenorhabditis elegans is one of the most ivestigated model organisms. The connections in its neural network were determined. However, almost all synaptic properties being excitatory or inhibitory are not determined. Synaptic properties of C. elegans were predicted with computer simulation. They were obtained for the combinations of environmental stimuli and responses to stimuli. Most of synaptic...
With the infinitely long current filament as the probe, the application of cosine window function with the parameters optimized by Genetic Algorithm (GA) in plane-wave synthesis technique is studied by the method of computer simulation. Cosine window function with the parameters optimized by GA is utilized to weight the amplitude and phase distribution of the linear array made up of the infinitely...
This article to high schools in Pudong New Area 36, in the rate of college entrance examination past rate, and three years ago the new students entrance result for every high school, has carried the system analysis, has modeling the gray Verhulst model by using the Excel trial method. At the same time, to increase the model precision, has carried on the residual revision to the model. This article...
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