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With the rapid development of technology, growing number of technology diffusion not only appears among different technology sectors, but also appears among different industry sectors. It shows high level of complexity. The influencing factors of technology diffusion is complicated and gradually become a hot academic research field. We take the 3D printing technology as the research object, using...
In this work, a novel GaN-based reverse blocking metal-insulator-semiconductor high electron mobility transistor (RB-MISHEMT) is investigated by TCAD sentaurus. A MIS field effect drain consisting of electrically shorted Ohmic and recessed MIS structure is adopted to enable the device with high reverse blocking capability and low offset voltage. The proposed enhancement-mode (E-mode) RB-MISHEMT delivers...
AlGaN/GaN lateral current regulating diodes (CRDs) featuring Ohmic anodes and hybrid trench cathodes have been proposed and successfully demonstrated on silicon substrates. By the introduction of a trench with a depth of 16.4 nm in the cathode, the regulating current dramatically decreases from 457.4 to 33.1 mA/mm. In such case, the device can deliver a constant current and keep from thermal runaway...
In this work, a high performance AlGaN/GaN power diode featuring MIS-gated hybrid anode (MG-HAD) with ultralow forward turn-on voltage (VT) and low reverse leakage current was experimentally demonstrated. By accurately designing the recessing depth in the MIS-gate region, a record low VT of 0.2 V for GaN power diode was obtained in the MG-HAD with 4-nm recessed-barrier-thickness. Meanwhile, the device...
In this paper we analyze the reliability of atomically thin hexagonal boron nitride (A-BN) dielectric stacks subjected to electrical stresses. The 2D insulating stacks are grown by chemical vapor deposition, meaning that (unlike exfoliated nanosheets) they can cover large areas and are suitable for the fabrication of scalable devices using photolithography tools. By comparing HfO2 and A-BN stacks...
Dense deployment of femtocells can cause serious intra-tier interference. In this paper, we propose a new cooperative approach for allowing the femtocell user equipments (FUEs) to merge into cooperative groups, i.e., coalitions, for the uplink transmissions in a femtocell network, so as to reduce the intra-tier interference and improve the system performance, while taking the power cost for cooperation...
Femtocell access points (FAPs) has emerged as to improve the coverage and capacity of next generation network. However, dense femtocell deployments can cause severe interference. In this paper, a FAPs' cooperation approach is proposed to solve the interference problem. In particular, for uplink transmissions, the cooperative FAPs are allowed to form a group (i.e., coalition) to optimize their sum-rate...
In the Resistive Random Access Memory (RRAM) devices, switching between high and low resistive states is controlled by the processes of disruption and restoration of a conductive filament, which could be formed through the dielectric film. In this study, we demonstrate that RS is strongly linked to the mechanical properties of the insulator that should be considered in the design of flexible memories,...
Graphene electrodes are being massively introduced in a wide range of electronic devices. On the contrary, exhaustive ageing studies, which are necessary prior to device commercialization, have never been performed before. Here we present the first complete reliability study of a carbon-based electrode, and the main ageing mechanisms are discussed by means of accelerated tests, nanoscale and device...
In this work, an AlGaN/GaN power diode with edge-terminated Schottky/ohmic hybrid (ETH) anode is proposed. 2-D simulation is carried out to study the characteristics of the ETH-diode. The forward onset voltage Von of the device can be modulated by thinning the barrier thickness beneath the Schottky gate region of the hybrid anode. With remaining AlGaN-barrier of 5 nm the Von as low as 0.25 V is achieved...
Credit risk assessment is the groundwork of the individual housing loans. However, what banks really care about is how to make the most money with least risk. The most difficult problem of the credit risk management for the banks is that they both have to encourage loans, but also they need to avoid bad debt. This paper proposes a new risk assessment system of the individual housing loans by integrating...
As one of dynamic access technologies, cognitive radio technology is a promising technology to improve the frequency efficiency by allowing the cognitive radio nodes to use the under-utilized spectrum which is not used by the primary users with the spectrum sensing ability. However, because of the imperfectness of the sensing algorithms and the time-varying wireless channel effects, such as shadow...
The paper studied the effect of different solid-liquid ratio, pH, temperature, stirring time and the size of light-burned magnesium on copper effluent concentration, when light-burned magnesium treats simulated copper wastewater 50mg/L combined with chitosan. The results show that: considering economic costs and the actual operability, when the experiment conditions with light burned magnesium-chitosan...
Interference is one of the predominant factors that determine the performance of the wireless communication networks. The recent increasing interest in Quality of Service (QoS) and Quality of Experience (QoE) has motivated the development of interference evaluation capable of capturing the characteristics of the networks. Consequently, a great number of methods to evaluate the interference can be...
This paper researched on simulated mine water treated with fly ash modified by Na2CO3. The ratio of fly ash and sodium carbonate solution is 1g∶10mL, stirred, dried, crushed and screened. The main chemical components analyzed with GENESIS XM260SX- EDS. The experimental mine water is prepared with AR FeCl3 · 6H2O, MnSO4 · H2O, HCl and deionized water, based on the actual range of mine water quality...
Real-time and accurate method of diagnosing and monitoring crop nutrition is the foundation of scientific fertilization management. In this study, color characteristic information was acquired from scanning images of rice leaves at the jointing by MATLAB, through analyzing the relationship between chlorophyll content which were abstracted from leaves on different sites and 27 color characteristics,...
As the fast development of the global information, Internet goes into the society; the economy; the culture and every corner in our life. The popularity of the e-commerce gradually forms a global market and an international commercial network which can totally change people's living way and the commercial function mode. The article is about the application of an improved flexibility workflow in e-commerce...
Let A be a 2 times 2 expansive matrix with integer entries and |detA| = 2. Let h0 E (AT)-1Z2/Z2, and m is a 2piZ2 periodic function, m is called an A-dilation generalized filter if it satisfies |m(s)|2 + |m(s + 2pih0)|2 = 1, for any s isin R2, where R is the real number set and Z is the integer set. In this paper, we discuss these filters. We present a concrete constructing method of such a filter,...
Nowadays, the competitions between companies are becoming more and more fierce, so the business processes of a corporation must make necessary adjustment according to the requirements. Meanwhile, workflow model must have the ability of well describing the business processes. And it also has to handle various kinds of possible exceptions. According to the possible exceptions during the execution of...
Nowadays, the competition between companies are becoming more and more fierce, so the business processes of a corporation must make necessary adjustment according to the requirements. Meanwhile, a work flow model must have the ability of well describing the business processes. And it also has to handle various kinds of possible exceptions. According to the possible exceptions during the execution...
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