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I-frame affects image quality seriously, but costs enormous bits in video coding processing. In order to optimize the increasing bit rate caused by I-frame, we design a novel video codec based on residual image for the latest video coding standard HEVC. An appropriate method to obtain residual image is proposed depend on the characteristic analysis. The proposed codec reduces considerably by up to...
Public transportation guidance services, such as Yahoo, Jorudan and NAVITIME, are widely used nowadays and support our daily lives. Although they provide useful services, they have not fully been personalized yet. This paper presents a personalized transportation system called Patrash: Personalized Autonomous TRAnsportation recommendation System considering user context and History. In particular,...
Study on energy consumption in wireless systems becomes attractive recently. The worldwide organization 3GPP has established a series of standards to help reduce energy consumption in wireless systems. However, the utilization of green related techniques is still in theoretical way. To reduce energy consumption in cellular networks, the effective and common method is to shut down idle base stations...
This paper studies an online retailing supply chain system in which infomediary provides demand referral service to Internet retailer. We assume that the online demand is affected by retailer price, referral service effort and word-of-mouth. The demand function is developed based on Bass's model. A service cooperation model is established and then the optimal decisions of retailer's price and infomediary's...
Due to the low couple efficiency of daylighting system. Therefore we designed a sun collector which is based on Snell's law and it consists by two pieces of mirrors and a prism made from PMMA. And we use 5 sunlight collectors to compose a collecting system. Regarding to the collecting system, the transmission efficiency is 54.15% which the transmission distance is 85.7m. After we combine collection...
Modeling and simulating of pedestrians movement have attracted much attention because they provide reproducible results, which are important to evaluate evacuation facilities and risks. It is well accepted the movement of individuals is affected by interactions with others and the environment. However, factors affecting the interactions are not fully studied and experiments are needed. This paper...
A personalized system considering user context and social histories is attractive. We present a personalized transportation system called PATRASH: Personalized Autonomous Transportation recommendation System considering user context and History. PATRASH considers not only users' context and transportation histories, but also real bus delay. The bus delay returned by Bus Delay API (BDAPI) is used for...
We report efficiency enhancement in quantum dot (QD) based LEDs with the aid of excitonic energy transfer from co-doped TCTA:Ir(ppy)3 layer to CdSe/ZnS QDs while providing spectrally pure emission.
We report flexible tapes of high-performance, top-emitting, quantum dot based, light-emitting diodes (QLEDs) with multicolor emission, actively working even when flexed. The resulting QLED tapes reach a high peak luminance level of 19,265 cd/m2.
Social force model is a widely-used crowd model that simulates pedestrian dynamics based on Newtonian mechanics. It combines physical forces (caused by body compression) with psychological repulsive forces (caused by the pedestrians' inner desire to keep a distance from others or walls) to represent the intentional collision avoidance mechanism. The model can reproduce many collective phenomena (e...
It is often hard to settle the estimation problems for the signal systems with time delays. By modern time series analysis method, the systems with time delays can be transformed into those without time delays. By the measurement predictor and the white noise estimators, the local and the optimal information fusion Wiener signal estimators are presented. Applying the CI (Covariance Intersection) method,...
Many organizations today require secure interactions both externally (with banks for example) and internally (to preserve internal/external organizational boundaries or for confidential information exchange). At present these organization rely on a model where the IT department is a trusted broker of passwords and credentials. There are a number of vulnerabilities in this approach especially the disgruntled...
Different from those previous methods for solving the problems of time-delay systems, the time delays are embedded into the ARMA innovation models by modern time series analysis method. Using the measurement predictors and the white noise estimators, the local and the optimal information fusion Wiener signal estimators are presented for the two-sensor multichannel signal systems. Applying the CI (Covariance...
With the increasing amounts of parallel programs, produced to effectively use the parallel computing resources on CMP(chip multi-processor), it is becoming more important to study these programs' data access characteristics on CMP. In this paper, the cache behaviors of parallel programs running on CMP are simulated and analyzed . Based on the the great degree of shared data accesses among different...
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