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A stray gassing test device for transformer oil under condition of coincident electric field and temperature was developed and the corresponding test method was established independently. Influences of oxygen, temperature, electric field strength, metal deactivator content on the transformer oil stray gassing were studied, and the reason for hydrogen overproof was analysed. The results showed that...
Lucky imaging is a method of high resolution imaging without Adaptive Optics (AO) system, and widespread in astronomy and space target observation. We measured atmospheric conditions at Xinglong Observatory, and evaluated the feasibility for lucky imaging. Atmospheric seeing is acquired by Differential Image Motion Monitor (DIMM), of which the median value is 1.37". atmospheric dispersion is...
The nodes in communication networks are possibly and most likely equipped with different recovery resources, which allow them to recover from a virus with different rates. In this paper, we aim to understand know how to allocate the limited recovery resources to efficiently prevent the spreading of epidemics. We study the susceptible-infected-susceptible (SIS) epidemic model on directed scale-free...
As the feature size of the semiconductor process is scaling down to 10nm and below, it is possible to assemble systems with high performance processors that can theoretically provide computational power of up to tens of PLOPS. However, the power consumption of these systems is also rocketing up to tens of millions watts, and the actual performance is only around 60% of the theoretical performance...
On the basis of depth study of commercial bank credit risk control model literature, this paper introduced the concepts of credit risk and credit risk control. We research the main influencing factors of commercial bank credit risk control scientifically by artificial neural network theory, and then set a commercial bank credit risk control index system which contains 3 levels of 27 indexes. Improved...
In this paper we describe a model for the activation level of users in online dating platforms (ODPs). Such popular systems are conceived in order to match individuals from two groups of potential mates. The business of such platforms pivots around the customers' expectancy to get in contact with their future dates: upon the payment of a fee to the platform owner, ODPs provide specific tools to improve...
Defining an optimal protection strategy against viruses, spam propagation or any other kind of contamination process is an important feature for designing new networks and architectures. In this work, we consider decentralized optimal protection strategies when a virus is propagating over a network through a Susceptible Infected Susceptible (SIS) epidemic process. We assume that each node in the network...
In this paper we propose strategies to increase the robustness of a communication network which depends on the proper functioning of an electricity network. The strategies involve selecting nodes of the communication network and removing their dependency on the electricity network. Compared to existing literature on this topic, such as Schneider et al. [1], we use a more realistic model of the electricity...
The principal eigenvector x1 belonging to the largest adjacency Eigen value (i.e. The spectral radius) of a graph is one of the most popular centrality metrics. The spectral radius of the adjacency matrix powerfully characterizes the dynamic processes on networks, such as virus spread and synchronization. The sum of components of the principal eigenvector, which is also called the fundamental weight...
A band-pass-filter (BPF) based on silicon substrate was designed and simulated. Different software was applied to design and simulate the character of the filter. A three-order filter was designed dedicating to range 2.4 GHz-2.5 GHz use. The ideal topology circuit was designed with passive inductors and capacitors. Moreover, the integrated passive devices (IPDs) were modeled and simulated with thin...
With the increasing need of smaller size and lower cost of wireless communication system, the integrated passive devices (IPDs) have offered a proper solution. However, small Q factor (quality factor) of integrated passive inductors seriously limits the performance of the IPDs. In this paper, a simplified circuit model of the inductor structure has been presented to extract the parasitic parameters...
With the increasing need of smaller size and lower cost of wireless communication system, the integrated passive devices (IPDs) have offered a proper solution. However, small Q factor (quality factor) of integrated passive inductors seriously limits the performance of the IPDs. In this paper, a simplified circuit model of the inductor structure has been presented to extract the parasitic parameters...
A band-pass-filter (BPF) based on silicon substrate was designed and simulated. Different software was applied to design and simulate the character of the filter. A three-order filter was designed dedicating to range 2.4 GHz-2.5 GHz use. The ideal topology circuit was designed with passive inductors and capacitors. Moreover, the integrated passive devices (IPDs) were modeled and simulated with thin...
A 2.5D three-dimensional (3D) silicon interposer with through silicon vias (TSV) was designed and fabricated. All structures are for the purpose of evaluating the design and layout, electrical testing, and to evaluate process reliability of the 2.5D interposer. Three levels are tested: chip, interposer and plastic substrate. The paper details the layout of the three levels, the principal electrical...
ReRAM has been considered as one of the potential technologies for the next-generation nonvolatile memory, given its fast access speed, high reliability, and multi-level capability. Multiple-layered architectures have been used for several megabit test-chips and memory macros [1–3]. This paper presents a MeOx-based 32Gb ReRAM test chip developed in 24nm technology.
Rapidly growing performance and mixed-signal integration is driving the requirement for product and component miniaturization in electronics applications. Embedded passive technology is a potentially attractive solution to replace discrete passives, due to low parasitic parameters, homogeneous integration and small form factor. Embedded capacitors are widely used in a broad range of applications including...
By utilizing the properties of PN junction barrier capacitor, a technology for passive device integration(PDI) on silicon is presented. Accurate high density capacitors, coils, resistors and trough wafer interconnect enable the realization of a highly miniaturized the consumer-oriented connectivity applications module without surface mounted devices (SMDs). The three-dimensional (3D) PN junction structure...
In this paper, a group of coplanar lines on a silicon dioxide insulating layer on a nominally doped silicon substrate is simulated and measured. Electrical parameters extracted from published data are used and lead to substantially improved agreement with measurements. In addition, several models of redistribution layer (RDL) with different shape-TSVs (through silicon vias) are simulated, along with...
Due to the differences in the thermal expansion coefficients of copper and silicon, a large thermal stress develops at the interface between a Cu-filled via and both the insulation layer and the surrounding silicon when the structure is subjected to temperature loading. In this paper four TSV geometries are considered in an effort to investigate the role of via geometry on stress relief. Thermo-mechanical...
This paper introduces two filtering methods in virtual environments, VON and UFR. By comparing the performance of the two kinds of methods with simulation programs, results show that UFR has better performance than the VON and other original “strip” algorithm.
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