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With the development of tourism industry, the impacts of tourism have been drawing increasingly attention. It has become an important and essential work to evaluate the impact of cultural tourism resources development. However, the conventional evaluation methods have some limitation on weight determination due to their one-sidedness. In this paper, we propose an integrated entropy weighted method...
Using 1-min transaction data, this study investigates the relationship between volume and volatility in CSI 300 futures market in China. Unit root test indicates that return series are stationary. LB-Q and ARCH-LM statistics confirm volatility clustering and time-vary volatility. ARMA (2, 2)-EGARCH (1, 1) model find evidence of GARCH effect, and positive shocks have a greater impact on volatility...
In recent decades, moving towards extensive applications of renewable energy sources instead of traditional fossil ones, distributed generations or DGs have become proper choices to employ in power grids. Although application of these types of supplies have lots of advantages, such as improving the voltage stability, enhancement of the voltage profiles, mitigation of power losses and improvement of...
LRM (Linear Replaceable Module) structure is a new generation of high-reliability avionics system is based, and in the other comprehensive electronic system design are also beginning to use. In practical applications, according to the structure of RF-based LRM standards for integrated electronic system back-plane radar signal simulator has been designed, but not informed LRM module installation back-plane...
In this paper, we study a modified Leslie-Gower predator-prey model with Holling II type functional response and harvesting terms. By means of the generalized continuation theorem, sufficient conditions for the existence of at least two positive periodic solutions of the model are established.
We study a setting where a set of players simultaneously invest in a shared resource. The resource has a probability of failure and a return on investment, both of which are functions of the total investment by all players. We use a simple reference dependent preference model to capture players with heterogeneous risk attitudes (risk seeking, risk neutral and risk averse). We show the existence and...
This paper presents partitioning fuzzy c-means clustering algorithms for interval-valued data based on city-block distaces. These fuzzy c-means clustering algorithms give a fuzzy partition and a prototype for each fuzzy cluster by optimizing an adequacy criterion based on suitable adaptive and non-adaptive city-block distances between vectors of intervals. The adaptive city-block distances change...
This paper presents a novel method for calculating the unstable equilibrium point (UEP) for a two-bus system using holomorphic embedding (HE). The method is guaranteed to find the UEP solution. The focus of this paper is to prove mathematically that if a UEP solution exists, the method is guaranteed to arrive at that and only that solution and if no solution exists, then such is indicated by the oscillations...
Static analysis has been successfully employed in software verification, however the number of generated warnings and cost incurred in their manual review is a major concern. In this paper we present a novel idea to reduce manual review efforts by identifying redundancy in this review process. We propose two partitioning techniques to identify redundant warnings - 1) partitioning of the warnings with...
In this paper, we present a method for removing ruling lines from handwritten documents, making no damage to the existing characters. It is argued that ruling lines have a predictable position in the page, but their thickness and the distance between them may differ from one document to another, which is estimated with simple algorithm. Another important challenge in this regard is detecting the edge...
This paper presents a new validity index for fuzzy partitions generated by the fuzzy c-means algorithm. The proposed validity index is based on the calculation of factors from the proximity matrix generated from the membership matrix generated by a fuzzy clustering partition algorithm, such as FCM. The experimental results show that the proposed approach is consistent with other well-known metrics...
Traditionally, the countries classification is performed based on several features, that are related to economic and social factors. However, the classification process is costly due to the difficulty of obtaining those features and the need for intervention of human expertise. In this paper, we propose an intelligent agent that classifies countries based on financial indices. The artificial agent...
The purpose of full reference image quality indices like Mean Square Error (MSE) or SSIM is to predict the judgement of human observers in subjective quality assessment tasks. More advanced indices like SSIM or VIF are, however, rarely metrics in the strict sense, i.e. they don't define a distance between pairs of images that would describe how far these images are related. It was shown in a recent...
Models written in multidomain simulation languages like Modelica describe hybrid systems of differential and algebraic equations (hybrid DAEs). Algebraic events are an integral part of those models. Their detection in general requires numerical root-finding. This method can be optimized. We show that state-of-the art simulators force unnecessary evaluations during root-finding: The calculation of...
The Distribution System is composed by many factors that define a great execution, when each one perform its function. These factors can be classified in two groups, the system planning and the system management. The relation between these groups is expressed by power supply continuity limits. These limits define how much the system is reliable, or in other words, if the energy injected in the system...
Industrial wastewater treatment plants (WWTP), especially in pulp and paper mills, have operational problems resulting fluctuations in effluent discharges. The composition and flow rates of industrial wastewater fluctuate depending on the production schedules of the upstream processes. A lot of process measurements are available, but measurement sets do not include sufficient information on the special...
The proposed algorithm in this paper is capable of classifying not only unusual speech when people get anger, surprised, or excited but also unusual noise such as clashing, hitting, or clapping in real-time without depending on particular speaker voices or utterances. Also, it does not require a prior learning process to construct acoustic models. This algorithm, therefore, allows a surveillance camera...
This paper presents an hourly simulation model for the analysis in an annual context of the impact of large scale RES penetration on the Hellenic Power System. The impact is assessed in terms of the System Marginal Price of the Day Ahead Market (DAM), taking into account the intermittency of the Renewable Energy Sources (RES) production and its optimal integration into the power system along with...
3D animations have been widely used in the movie and gaming industries. However, the huge storage requirements of dynamic mesh data make it difficult for a number of applications such as rendering, transmitting over a network, etc.This study proposes a multiresolution representation for 3D animation. The results show that the coarse animation appears by using only 10% of the original faces. More detailed...
In this paper we describe an objective smoothness assessment method for volume data. The metric can predict the extent of the difference in smoothness between a reference model, which may not be of perfect quality, and a distorted version. The proposed metric is based on the wavelet characterization of Besov function spaces. The comparison of Besov norm between two models can resolve the global and...
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