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The performance of lithium-ion rechargeable battery depends on its coulombic efficiency, which determines the measurement accuracy of the state of charge as well. In this context, the regularity that coulombic efficiency changes with environmental temperature and charge-discharge rate was analyzed in different cases, and a TPS (Thin Plate Spline) surface fitting-based coulombic efficiency estimation...
Instagram is an popular photo-sharing smart phone application of social network and is widely used among tourists to record their journey information such as location, time and content. Consequently, huge volume of spatio-temporal data are generated in the form of trajectories. Discovering useful patterns from these trajectories can reveal valuable knowledge to a variety of critical applications....
This paper presents a new workforce allocation optimization model for project scheduling problems with multi-skilled workforce constraints (PSPMSWC), under uncertainty about the projects. The model is a mixed-integer program(MIP) model that aims at maximizing the total profit. As a subproblem, scheduling and staff assignment for projects must also be optimized. In the experiment, projects are selected...
Opportunistic scheduling of delay-tolerant traffic has been shown to substantially improve spectrum efficiency. To encourage users to adopt delay-tolerant scheduling for capacity-improvement, it is critical to provide guarantees in terms of completion time. In this paper, we study application-level scheduling with deadline constraints, where the deadline is pre-specified by users/applications and...
Scheduling delay-tolerant tasks based on both load-and channel-awareness can significantly reduce the peak demand in cellular networks. However, solving the optimal scheduling problem leads to a large-scale Markov Decision Process (MDP) with extremely high complexity. In this work, we propose a scalable and distributed approach to this problem, called Coordinated Scheduling (CoSchd). CoSchd decomposes...
In this letter, we study the beamforming and user selection problem in multicast MISO wiretap-channel, where a base station (BS) with N_t antennas broadcasts a common confidential message to M legitimate users (Bobs) and N unauthorized users (Eves) attempt to eavesdrop the message. We target at maximizing the minimum secrecy-outage rate of Bobs and propose an iterative successive convex approximation...
This paper introduced a user research case of youth in second and third-tier cities and focuses on the self-knowledge classification method implemented in the study. This case firstly studied the background, and then selected nineteen samples of users through the user funnel model. At last, researchers conducted the in-depth interviews used the self-knowledge methods. This method divided into three...
Many data applications in the next generation cellular networks, such as content precaching and video progressive downloading, require flow-level quality of service (QoS) guarantees. One such requirement is deadline, where the transmission task needs to be completed before the application-specific time. To minimize the number of uncompleted transmission tasks, we study laxity-based scheduling policies...
Using balance sheet data for a panel of Chinese Listed firms, we try to find evidence of the balance sheet channel of monetary policy transmission. The results indicate that the quality of firms' balance sheet during the tighten period is worse than the quality during the loose period, and the effect of changes in monetary policy on the quality of firms' balance sheet is asymmetric over time. In periods...
To reduce image noise, we propose a novel image filter based on stepwise ratio grey model (SGM). The basic theory and the method of stepwise ratio grey prediction model are introduced first. The new filter makes use of neighborhoods around each noisy pixel to predict its intensity value and reflects the dynamics of stepwise ratio. The experimental results show that the proposed method, compared with...
Radial basis function is simple in form, isotropic etc., and has made great progress in recent years. The bending and buckling of plates belong to high-order boundary value problems. Therefore the displacement and the rotation angles on the boundary are compulsive as essential condition. In order to ensure the accuracy of solution, a new Hermite Radial Basis Functions (HRBF) interpolation is introduced...
This paper studies evaluation indices and selection methods by summarizing previous articles about supplier selection firstly, selects quality, price and delivery as evaluation indicators, and analyzes their priorities according to different characteristics of each stage of product life cycle (that is introduction, growth, maturity and decline). The paper proposes a model of multi-objective programming...
Automated trust negotiation (ATN) is an approach to establishing mutual trust between strangers wishing to share resources or conduct business by gradually requesting and disclosing digitally signed credentials. We present the formalization of automated trust negotiation system in the applied pi calculus and analyze its security property automatically with the assistant of an automatic protocol analyzer,...
In order to deal with the uncertain temporal knowledge of the complex real-time system and to improve the existed uncertain temporal knowledge expression and inference algorithm, a new kind of high-level fuzzy timed Petri nets was proposed based on fuzzy timed Petri nets (FTN). The uncertain temporal of the complex real-time can be quantitatively described and the time possibility can be analyzed...
The goal for reformation of higher education is to achieve a superior teaching quality. The spring and the development of research-oriented universities, puts forward new requests on teaching method and cultivation model. And it drives ahead the exploration and practice of research-oriented teaching method and cultivation model. Structural chemistry comprises a central body of knowledge that describes,...
Improving the service quality of hospital health center is crucial for increasing its competitiveness. After sending questionnaires to four hospital health centers in Hangzhou, we use regression analysis to research five encounter factors' influence on service encounter quality, including doctors' professional competence, doctors' attitude, guidance nurses' attitude, receptionists' attitude and service...
In this paper, four tense operators E, F, G, H, are introduced into LP(X), then extend a lattice-valued propositional logic system to lattice-valued tense propositional logic system LTP(X). In this system, some definitions including generalized literal, T-skolem standard form, are given out. Based on these work, several conclusions about resolution deduction are got. Finally, alpha-soundness theorem...
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