We present the fabrication and testing of a silicon carbide （SiC） balanced mass doublended tuning fork that survives harsh environments without compromising the device strain sensitivity and resolution bandwidth. Th...We present the fabrication and testing of a silicon carbide （SiC） balanced mass doublended tuning fork that survives harsh environments without compromising the device strain sensitivity and resolution bandwidth. The device features a material stack that survives corrosive environments and enables high-temperature operation. To perform hightemperature testing, a specialized setup was constructed that allows the tuning fork to be characterized using traditional silicon electronics. The tuning fork has been operated at 600°C in the presence of dry steam for short durations. This tuning fork has also been tested to 64 000 G using a hard-launch, soft-catch shock implemented with a light gas gun. However, the device still has a strain sensitivity of 66 Hz/μe and strain resolution of 0. 045 μe in a 10 kHz bandwidth. As such, this balanced-mass double-ended tuning fork can be used to create a variety of different sensors including strain gauges, accelerometers, gyroscopes, and pressure transducers. Given the adaptable fabrication process flow, this device could be useful to micro-electro-mechanical systems （MEMS） designers creating sensors for a variety of different applications.展开更多
This paper focused on the studies of interactionist theory and discussed the possibility that interactionist theory could be applied in internationalized curriculum in higher educational institutions. The following qu...This paper focused on the studies of interactionist theory and discussed the possibility that interactionist theory could be applied in internationalized curriculum in higher educational institutions. The following questions are proposed： （1） What is interactionist theory？; （2） How can we improve interaction between international students and faculty？; and （3） How can we improve interaction between international students and domestic students？ According to these questions, literature review was conducted to explain interactionist theory, and the possibility that interactionist theory can be applied in internationalized curriculum was discussed in two aspects： （1） enhancing the interaction between international students and faculty when teaching internationalized curriculum; and （2） enhancing the interaction between international students and domestic students when teaching internationalized curriculum.展开更多
In this paper, the borrowing data of readers is analyzed and studied by taking K-Means algorithm as an example and implementing this algorithm in Hadoop calculation platform, and data mining technology is effectively ...In this paper, the borrowing data of readers is analyzed and studied by taking K-Means algorithm as an example and implementing this algorithm in Hadoop calculation platform, and data mining technology is effectively and closely combined with personalized library service through the experimental data.展开更多
Direct extrapolation of the strong interaction between quarks in pure perturbative calculation has a problem of thermodynamic inconsistency. A new term determined by thermodynamic consistency requirement could resolve...Direct extrapolation of the strong interaction between quarks in pure perturbative calculation has a problem of thermodynamic inconsistency. A new term determined by thermodynamic consistency requirement could resolve it. This new term plays an important role at lower density in describing the equation of state of quark matter, while it is negligible at high density. Accordingly, the density behavior of the sotmd velocity becomes more reasonable, and the maximum mass of quark stars can be as large as two times the solar mass.展开更多
文摘We present the fabrication and testing of a silicon carbide （SiC） balanced mass doublended tuning fork that survives harsh environments without compromising the device strain sensitivity and resolution bandwidth. The device features a material stack that survives corrosive environments and enables high-temperature operation. To perform hightemperature testing, a specialized setup was constructed that allows the tuning fork to be characterized using traditional silicon electronics. The tuning fork has been operated at 600°C in the presence of dry steam for short durations. This tuning fork has also been tested to 64 000 G using a hard-launch, soft-catch shock implemented with a light gas gun. However, the device still has a strain sensitivity of 66 Hz/μe and strain resolution of 0. 045 μe in a 10 kHz bandwidth. As such, this balanced-mass double-ended tuning fork can be used to create a variety of different sensors including strain gauges, accelerometers, gyroscopes, and pressure transducers. Given the adaptable fabrication process flow, this device could be useful to micro-electro-mechanical systems （MEMS） designers creating sensors for a variety of different applications.
文摘This paper focused on the studies of interactionist theory and discussed the possibility that interactionist theory could be applied in internationalized curriculum in higher educational institutions. The following questions are proposed： （1） What is interactionist theory？; （2） How can we improve interaction between international students and faculty？; and （3） How can we improve interaction between international students and domestic students？ According to these questions, literature review was conducted to explain interactionist theory, and the possibility that interactionist theory can be applied in internationalized curriculum was discussed in two aspects： （1） enhancing the interaction between international students and faculty when teaching internationalized curriculum; and （2） enhancing the interaction between international students and domestic students when teaching internationalized curriculum.
文摘In this paper, the borrowing data of readers is analyzed and studied by taking K-Means algorithm as an example and implementing this algorithm in Hadoop calculation platform, and data mining technology is effectively and closely combined with personalized library service through the experimental data.
基金supported by the National Natural Science Foundation of China(Grant Nos.11135011 and 11475110)the Key Project from Chinese Academy of Sciences(Grant No.KJCX3-SYW-N2)
文摘Direct extrapolation of the strong interaction between quarks in pure perturbative calculation has a problem of thermodynamic inconsistency. A new term determined by thermodynamic consistency requirement could resolve it. This new term plays an important role at lower density in describing the equation of state of quark matter, while it is negligible at high density. Accordingly, the density behavior of the sotmd velocity becomes more reasonable, and the maximum mass of quark stars can be as large as two times the solar mass.
