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Estimating the reflectance and illumination from a single image becomes particularly challenging when the object surface consists of multiple materials. The key difficulty lies in recovering the reflectance from sparse angular samples while correctly assigning them to different materials. We tackle this problem by extracting and fully leveraging reflectance priors. The idea is to strongly constrain...
Quality information work is one of the basic work for total quality management of equipment. Quality information is important to the equipment operation phase and its management is an important foundation for realizing the state of equipment quality and improving the equipment quality. Starting with the analysis of the function and character of quality information in equipment operation phase, this...
Lean maintenance theory is an advanced maintenance concept and method, which is formed aiming at the waste phenomena existing in most of the equipment maintenance and the lacking of maintenance theory and technique research. This paper mainly analyses several key technical characteristics related to lean maintenance: improved RCM theory, root cause analysis, improved FMEA technique, value stream analysis...
In order to study the operating life of structural components under the condition of load, the tensile damage experiments of carbon/epoxy composite are done in this paper. Then the mathematic model of the damage development of carbon/epoxy composite is built based on the experimental signal parameters, and then the reliability of carbon/epoxy composite is also discussed in this paper. Finally, the...
According to the necessity of reliability analysis for satellite system subjected to common-cause failures, the unreliability expression under a variety of common-cause condition is developed to analyze the unreliability of satellite system in this paper. Based on static fault tree analysis of satellite system, the binary decision diagram is used to evaluate the reliability considering common-cause...
Higher κ-value HfO2 (κ∼30) was evaluated in replacement metal gate pMOS devices. The higher-κ was achieved by doping and anneal of the HfO2 causing crystallization into the cubic phase. The resulting gate-stack has up to 103 × lower gate-leakage current compared to a reference HfO2: JG at −1 V ∼ 2 µA/cm2 at EOT∼9.7 Å. The better JG - EOT-scaling, result in performance and reliability improvements...
The reliability of complex interconnect structures at all levels of the chip integration hierarchy has become a major concern due to the use of fine feature sizes, diverse materials, and complex 3D architectures. Reliability issues range from stress related failures such as dielectric cracking and interface debonding during manufacturing to electrical and mechanical failures such as electromigration...
Based on the wave equation of longitudinal vibration, the simulation model of cyclic stress properties for sucker rod is proposed. The regression model for stress concentration factor of rods with defects is established by the finite element method. According to the influence of transition section on fatigue limit and service life on the degree of damage, combining the randomness of material mechanical...
Multi-pulse Auto-Transformer Rectifier Unit (ATRU) is the most popular harmonic solution for aircraft application. The characteristic of multi-pulse ATRU under unbalanced input and open-phase condition is analyzed detailed in this paper. By a general model for all kinds of multi-pulse ATRU proposed in this paper, the output characteristics of ATRU under unbalanced input is analyzed with the asymmetric...
Thermal stress formed in the solder of the microelectromechanical systems (MEMS) sensor during the reflow soldering process due to the coefficients of thermal expansion (CTE) mismatch between the different materials. As the package needs to be hermetically sealed to protect the device from outside environmental effects, the local stress concentration would eventually cause cracks in the solder and...
Understanding of the travel time reliability of military transportation network between two points could reduce supply break of military material and increase the anti-damage ability. This paper presents a methodology of evaluating the road reliability under military attack. The travel time reliability function of military transportation network is established and the involved algorithms are suggested...
Abstract-There is vast disparity in the usages of online functions among tertiary institutions, depending on individual students' learning motivation, facilitation by lecturers, and a general habit or culture of keeping up with online applications. One recent online resource is blog, which witnessed varied usages in everyday life communication, and is equally relevant for exchanges and discussion...
The existence of self-serving bias in the customers' responsibility attribution of service outcomes in which they participate has never been empirically tested. As an important branch in service management, extant research on emotion management of service employees mainly draws on the theory of emotional contagion, but goes silent on how service employee's emotions affect customers' cognitive judgments...
In this paper, the effect of tunnel barrier and device structure for the reliable and low power resistive switching operation was researched in the HfO2 based ReRAM system. From the experimental results, the Al2O3 thin layer as the tunnel barrier lowered the operation current and improved thermal stability for the stable switching operation. Moreover, the additional decrease of the operation current...
Cement production lines have seen considerable increase in capacities over the last several decades and the trend can be expected to continue in the future as owners continue to seek the benefits of the economies of scale such lines provide. Concurrent with this is the gradual phasing out of redundant, or backup, production equipment as exemplified by the increasing practice of having one raw and...
Three-dimension (3D) integration provides a promising approach to build complex microsystems through bonding and interconnection of individually optimized device layers without sacrificing system performance. The use of traditional underfill processes is expected to suffer an arduous challenge as the filled gap of a large scale chip is narrowed down to several micrometers. Consequently, the subsequent...
Ensuring reliability of interfaces of dissimilar materials is one of the most critical design aspects of electronic assemblies. A study on the interface delamination phenomenon of different power packages was undertaken. Thermally induced stresses caused by the thermal mismatch between molding compound (MC), Si-die, and Cu- heatsink act as combined shear and normal loadings on the respective interfaces...
Electrical insulators of the Provincial Electricity Authority (PEA) of medium system are mostly porcelain insulator types that consists of suspension, pin type, line post, and pin post insulators. The distribution lines will be polluted by industrial contaminants, salt fog or natural dust. Experience shows that pollution flashover is one of the main natural calamities harming and affecting the voltage...
Lead-free (LF) solder joints of portable devices are frequently subjected to unintentional drop, bend, shear and thermal cycling loading during transportation, handling, and usage. Various underfills are widely used in the electronics industry to deal with these challenges, however, the above approaches have some intrinsic shortcomings such as high material costs, low manufacturing assembly rate,...
In this paper, a novel power cycling system with thermal test vehicle design following the concept defined in JESD22-A122 standard has been established to better approximate field operating conditions. The test unit used in the system is to simulate real product, therefore it is not only package on board but also with an external fan. A closed-loop controller with power modules in this system is able...
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