Compound semiconductor nanotube materials grown and fabricated

A new GaAs/InGaAs/InGaP compound semiconductor nanotube material structure was designed and fabricated in this work. A thin, InGaAs-strained material layer was designed in the nanotube structure, which can directionally roll up a strained heterostructure through a normal wet etching process. The compound semiconductor nanotube structure was grown by gas-source molecular beam epitaxy. A good crystalline quality of InGaP, InGaAs, and GaAs materials was obtained through optimizing the growth condition. The fabricated GaAs/InGaAs/InGaP semiconductor nanotubes, with a diameter of 300 to 350 nm and a length of 1.8 to 2.0 μm, were achieved through normal device fabrication

Thermoelectric Transport in Holographic Quantum Matter under Shear Strain

We study the thermoelectric transport under shear strain in two spatial dimensional quantum matter using the holographic duality. General analytic formulae for the DC thermoelectric conductivities subjected to finite shear strain are obtained in terms of the black hole horizon data. Off-diagonal terms in the conductivity matrix appear also at zero magnetic field, resembling an emergent electronic nematicity which cannot nevertheless be identified with the presence of an anomalous Hall effect. For an explicit model study, we numerically construct a family of strained black holes and obtain the corresponding nonlinear stress-strain curves. We then compute all electric, thermoelectric, and thermal conductivities and discuss the effects of strain. While the shear elastic deformation does not affect the temperature dependence of thermoelectric and thermal conductivities quantitatively, it can strongly change the behavior of the electric conductivity. For both shear hardening and softening cases, we find a clear metal-insulator transition driven by the shear deformation. Moreover, the violation of the previously conjectured thermal conductivity bound is observed for large shear deformation.Comment: 35 pages, 13 figure

Increasing Capacity of Intersections with Transit Priority

Dedicated bus lane (DBL) and transit signal priority (TSP) are two effective and low cost ways in improving the reliability of transits. On the contrary, these strategies reduce the capacity of general traffic. This paper presents an integrated optimization (IO) model to improve the performance of intersections with dedicated bus lanes. The IO model integrated geometry layout, main-signal timing, pre-signal timing and transit priority. The optimization problem is formulated as a Mix-Integer-Non-Linear-Program (MINLP) that can be transformed into a Mix-Integer-Linear-Program (MILP) and then solved by the standard branch-and-bound technique. The applicability of the IO model is tested through numerical experiment under different intersection layouts and traffic demands. A VISSIM microsimulation model was developed and used to evaluate the performance of the proposed IO model. The test results indicate that the proposed model can increase capacity and reduce delay of general traffic when providing priority to buses

THE EFFECTS OF KINESIO TAPING ON RATE OF FORCE DEVELOPMENT IN SQUAT JUMP AND COUNTER MOVEMENT JUMP

Kinesio tape (KT) has been widely used to prevent muscle pain and to improve strength and sports performance. Therefore, the aim of this study was to investigate the effect of KT in rate of force development (RFD). To compare with KT or non-KT in squat jump (SJ) and counter movement jump (CMJ). The RFD was improved or not improved by using KT. Six healthy female was recruited in this study. The kistler force plate was used to measure the RFD. There is no significant improve in SJ and CMJ. The results showed that KT did not affect RFD

THE EFFECTS OF QUADRICEPS TAPING AND NOWTAPING APPROCHES ON COUNTERMOVEMENT JUMP PERFORMANCE

Kinesio is one of the most common adhesive therapeutic tapes. Expect for clinical applications, kinesio claims to be able to enhance muscle activity performance. The purpose of this study was to investigate the effect of kinesio taping on quadriceps during a maximal counter-movement jump. Six healthy men was recruited in this study (Height: 173.8 k 4.2 em; Weight: 68.8 k 7.3 kg; Age: 22.9 k 2.3 yrs ). The kistler force plate was used to measure the jump height, takeoff force and landing force. No significant differences between two groups. The results showed that kinesio tape did not affect muscle activity and ground recreation force, jumping height and landing force

EXPLORING THE EXPENDITURES OF FOREIGN TOURISTS IN TAIWAN ON LOCAL SPECIALTY PRODUCTS AND TEA

In order to understand the expenditures of tourists in Taiwan regarding tea and local famous specialty products, it is essential to examine the demographic nature of the inbound tourists. In this study, information was gathered from the 2015 Annual Survey Report on Visitors’ Expenditures and Trends in Taiwan of the Tourism Bureau, Ministry of Transportation and Communications (MOTC), which included 6277 respondents, and analyzed by using ordinary least squares (OLS) regression methods. The analysis shows that gender, age, education, income, country of origin, travel purpose, travel type, and number of days stayed in Taiwan were the most significant factors to forecast the level of purchasing of tea and specialty products. With a greater understanding of these factors, the tourism industry in Taiwan will be able to increase revenue and improve their products and services. Meanwhile, as a reference for Taiwanese government can re-examine its tourism market to establish new policies and marketing plans to boost local economy

A unique X-ray unabsorbed Seyfert 2 galaxy IRAS F01475-0740

X-ray unabsorbed Seyfert 2 galaxies appear to have X-ray absorption column densities that are too low (NH < 10^22 cm-2) to explain the absence of broad emission lines in their optical spectra, challenging the standard AGN unification model. In this paper we report Suzaku exposure on the X-ray unabsorbed Seyfert 2 galaxy IRAS F01475-0740, in which a hidden broad line region was detected through spectropolarimetric observation. The X-ray data show rapid and significant variations on time scales down to 5 ks, indicating that we are viewing its central engine directly. A newly obtained optical spectrum and previous optical/X-ray data suggest that state transition is unlikely in this source. These make IRAS F01475-0740 a very peculiar X-ray unabsorbed Seyfert 2 galaxy which can only be explained by absorption from materials with abnormally high dust-to-gas ratio (by a factor of > 4 larger than Galactic). This is in contrast to most AGNs, which typically show dust-to-gas ratios 3 - 100 times lower than the Galactic.Comment: 13 pages, 3 figures, 1 table, accepted to the Astrophysical Journal Letter