Understanding the Impact of Restaurants’ Initial Online Reputation on Subsequent Online Reputation: Focusing on Source and Message Credibilities

When consumers have no previous experience with products or services, they form trust on them based on credible sources and messages. Thus, online review sites have become crucial word-of-mouth channels where customers search for the credible information. Although considerable literature on online reviews has revealed the role of reviewers and review characteristics in forming consumer behaviors, few studies have examined their impact on business reputation building processes. Therefore, we investigate whether the overall tendency of initial source and message credibilities can moderate the impact of the initial online reputation on the subsequent online reputation. We listed up 1,516 newly opened restaurants located in Manhattan of New York City and collected their reviews posted over the first six months. Expected contributions are also discussed

Effect of Dopants on Epitaxial Growth of Silicon Nanowires

We investigated the effects of dopants on epitaxial growth of Si NWs, with an emphasis on synthesizing vertical epitaxial Si NW arrays on Si (111) substrates. We found that addition of boron with a B:Si feed-in atomic ratio greater than 1:1000 improved the percentage of Si NWs grown along the vertical direction to more than 90%, compared to 38% for i-Si NWs. We also demonstrated a stemmed growth strategy and achieved a 93% percentage of i-Si NW segments along the vertical direction on Si substrates. In summary, our study opens up potential for using chemical synthesized vertical Si NW arrays integrated on Si substrates for large-scale applications

Twist Tetrahedral-Tilting Structure Built from Photoluminescent Cadmium Chalcogenide Clusters

The newly synthesized cadmium chalcogenide ternary cluster is composed by six [S3Se]2− tetrahedron units, coordinated with six Cd2+ cations. The potential cavity, calculated by the PLATON program, occupied 38.1% of crystal cell volume. The charge of unit cell is neutral. Therefore, the unit cell formula is determinate as [Cd6S18Se6]. Two strong solid-state luminescence peaks, centered at 450 nm and 498 nm, were observed from the ternary [Cd6S18Se6] clusters by λ = 370 nm radiation. The 450 nm peak is due to the porosity property of cadmium chalcogenide clusters. However, the 498 nm peak has not been reported for the cadmium chalcogenide clusters before. In this study, we demonstrate that the 498 nm peak is attributed to the embedded Se atoms confined in the [S3Se]2− unit of [Cd6S18Se6] cluster. The luminescent output from the ternary [Cd8S18Se6] cluster is stable in room temperature for more than 6 months

Non-monotonic temperature dependent transport in graphene grown by Chemical Vapor Deposition

Temperature-dependent resistivity of graphene grown by chemical vapor deposition (CVD) is investigated. We observe in low mobility CVD graphene device a strong insulating behavior at low temperatures and a metallic behavior at high temperatures manifesting a non-monotonic in the temperature dependent resistivity.This feature is strongly affected by carrier density modulation. To understand this anomalous temperature dependence, we introduce thermal activation of charge carriers in electron-hole puddles induced by randomly distributed charged impurities. Observed temperature evolution of resistivity is then understood from the competition among thermal activation of charge carriers, temperature-dependent screening and phonon scattering effects. Our results imply that the transport property of transferred CVD-grown graphene is strongly influenced by the details of the environmentComment: 7 pages, 3 figure

Primary ovary transitional cell carcinoma after renal transplantation

AbstractTransitional cell carcinoma (TCC) of the urinary tract is the most frequent malignancy following renal transplantation reported in Taiwan. A 67-year-old female underwent bilateral nephrouretectomy and bladder cuff excision because of bilateral hydronephrosis 5 years after cadaveric renal transplantation. The pathologic report was only atrophied kidney. Pelvic sonography and abdominal computed tomography showed a pelvic mass 8 years after transplantation. After gynecological surgery, the pathologic report of the left ovarian tumor was TCC, high grade, stage IIA. The patient then underwent four cycles of postoperative chemotherapy with carboplatin and gemcitabine. TCC of the ovary is a rare, recently recognized subtype of ovarian surface epithelial cancer. We present the first case of primary ovarian TCC following renal transplant

Asymmetric adiabatic couplers for fully-integrated broadband quantum-polarization state preparation

© 2017 The Author(s). Spontaneous parametric down-conversion (SPDC) is a widely used method to generate entangled photons, enabling a range of applications from secure communication to tests of quantum physics. Integrating SPDC on a chip provides interferometric stability, allows to reduce a physical footprint, and opens a pathway to true scalability. However, dealing with different photon polarizations and wavelengths on a chip presents a number of challenging problems. In this work, we demonstrate an on-chip polarization beam-splitter based on z-cut titanium-diffused lithium niobate asymmetric adiabatic couplers (AAC) designed for integration with a type-II SPDC source. Our experimental measurements reveal unique polarization beam-splitting regime with the ability to tune the splitting ratios based on wavelength. In particular, we measured a splitting ratio of 17 dB over broadband regions (>60 nm) for both H-and V-polarized lights and a specific 50%/50% splitting ratio for a cross-polarized photon pair from the AAC. The results show that such a system can be used for preparing different quantum polarization-path states that are controllable by changing the phase-matching conditions in the SPDC over a broad band. Furthermore, we propose a fully integrated electro-optically tunable type-II SPDC polarization-path-entangled state preparation circuit on a single lithium niobate photonic chip

On-chip adiabatic couplers for broadband quantum-polarization state preparation

© 2018 OSA. We present a unique wavelength-dependent polarization splitter based on asymmetric adiabatic couplers designed for integration with type-II spontaneous parametric-down-conversion sources. The system can be used for preparing different quantum polarization-path states over a broad band