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As cloud computing becomes popular, Platform as a Service (PaaS) plays an important role in a modern cloud system. The orchestration and efficiency attract more attention and demand a more intelligent solution. In this paper, we present Next Generation PaaS (NG-PaaS) which provides resource management, application management and performance monitoring. The NG-PaaS is built on docker to enable fine-grained...
Anaerobic ammonium oxidation (anammox) process has been recognized as efficient biological nitrogen removal process, which has the advantages of cost-effective and low energy compared to the conventional nitrification and denitrification processes. However, the efficient operation and control is limited due to the complexity of nonlinear and biochemical phenomena involved. This paper proposes an appropriate...
Quantum dots (QDs) have broad prospect in illumination and display in the future with their high quantum efficiency, tunable color in the entire visible range, and excellent color rendering ability. QDs are generally prepared as remote films in white light-emitting diodes(WLED), which gives rise to low light conversion efficiency (LCE). In order to enhance the LCE of QD-converted WLED (QCWLED), a...
White light-emitting diodes (WLEDs) composed of blue LED chip, yellow phosphor and red quantum dots (QDs) are considered as potential alternative for next generation artificial light source, with their high luminous efficiency (LE) and color rendering index (CRI). However, the poor compatibility of QDs/silicone and the optical reabsorption effect between the mixed QDs/phosphor particles severely hinder...
In view of multifarious power quality problems in the electrical railway power system (ERPS), an asymmetrical connection balance transformer (ABT)-based power quality control system (ABT-PQCS) is presented in this paper. The back-to-back converter which is connected to the system through the step-down transformer can eliminate the negative sequence current (NSC), compensate reactive power at the same...
A new impedance model based optimal strategy (IMOS) for reactive power and negative sequence currents (NSC) compensation in electrical railway power system (ERPS) with V/v transformer is proposed in this paper. We demonstrate the EIM of ERPS first, and expound the optimal strategy theoretically afterwards. At last, the simulation validates the correctness and effectiveness of the compensation strategy.
This paper presents a controllably inductive power filtering (CIPF) method applied in the shipboard power system (SPS). The CIPF method can realize the bi-directional and active-tracking elimination of harmonics from the nonlinear load and the generators at the source-side. The three-phase circuit and mathematical models of the CIPF system are established. By means of the theoretical analysis on the...
Dip-transfer phosphor coating method and its benefit on enhancing angular color uniformity (ACU) of white light-emitting diodes (LEDs) were previously reported, however, for applying this method in mass production, its fluid transfer mechanism and packaging consistency needs to be further investigated. The dip-transfer process is divided into two process, they are dipping process and transfer process...
This study quantitatively analyzed the optical and thermal performances of remote quantum dots (QDs)-based white light-emitting diodes (QDs-WLEDs) with the same spectra power distribution (SPD) but reverse packaging structures. The output optical power and PL spectra were measured and analyzed by an integrating sphere system, and the temperature fields were simulated by combing optical measurement...
In this paper, we propose a new type of push-pull structure fiber optic accelerometer based on 3×3 coupler for the first time and carried out measurements of its responsivity and cross-axis sensitivity. With specific algorithm, the phase signal of the sensor can be extracted without complicated modulation and demodulation. Experiments show that the responsivity of the accelerometer is larger than...
In this paper, a new scheme for delay parameters measurement in time division multiplexing (TDM) fiber optic interferometric sensor (FOIS) network is proposed. This scheme provides a solution of delay parameters measurement through the variance vector of the reshaped original data. By calculating the correlation between the variance vector and the system's pulse template vector, the scheme is capable...
To date, analyzing the sentiment of user-generated reviews is an important way to get timely feedbacks from customers. In order to solve the task, many semantics methods and machine learning algorithms are applied. However, most of them are based on word-level features. Segmenting a sentence into words is a much harder process in tonal languages, like Chinese and Thai, than the others, like English...
In this paper, MobiX technology provides security for online services using mobile devices with a wide range of customers including governments, military, business enterprises, and scientific organization, and individuals have been proposed. MobiX is a software security solution technology to enhance the networked mobile device trustworthiness, application integrity, preventing users from malware...
The ability to provide accurate spectrum sensing and decision making under an uncertainty environment is proving useful for the military SATCOM to increases the spectrum utilization. Dynamic spectrum access(DSA) allows a secondary user to access the spectrum holes that are not occupied by the primary users. However, the spectrum sensing for DSA is normally performed in a complex SATCOM environment...
Power supply restoration after a blackout is a major task of network reconfiguration. Current research has considered conventional power generation including thermal and hydroelectric units as power sources during system restoration. However, with the increasing number of HVDC projects, it is necessary to take HVDC into account to speed up the restoration process, because of its excellent performances...
In this paper, the position control problem of a gear transmission servo system with dead-zone nonlinearity is investigated. All the parameters involved in both system model and dead-zone nonlinearity model are allowed totally unknown. An adaptive back stepping control scheme is presented. The effects of dead-zone nonlinearities are described by mismatched and matched disturbances, which are compensated...
Docker, the most popular container technique today, has accepted by more and more people and companies. It achieves agility and controls for Development and IT Operations teams to build, ship, and run any app, anywhere. Taking Docker's advantages, enterprises are able to leverage big data analytics more efficiently. In this paper, we use two network modes in Docker when building one Spark based streaming...
In order to effectively eliminate the noise in the signal, a de-noising algorithm is proposed based improved wavelet threshold algorithm. Firstly, the advantages and disadvantages of wavelet soft threshold and hard threshold method are analysis, and constructs a new threshold function with an arbitrary derivative, secondly the optimal thresholds are estimated by adjusting the parameter values, finally...
For light-emitting diode (LED) packages, temperatures, especially junction and phosphor temperature, can greatly affect the optical performance. Thus, measuring the temperatures accurately is of significance for the performance estimation. Among the methods of measuring temperature, physical contact method, represented by thermocouple method, is most convenient and economical. In this paper, we measured...
Concept lattice is an effective tool for knowledge discovery and has been applied to many fields successfully. The objects and attributes have clear relations in the classical formal context, but there are a lot of fuzzy information in real-life applications. Therefore, it is important to study the fuzzy formal context. As we know, the fuzzy set and the classical set can be transformed into each other...
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