611 research outputs found
Variation Tendency of TC Activity in the NWP
AbstractBased on the tropical cyclone dataset during 1945âź2013 by Joint Typhoon Warning Center (JTWC), this study has systematically analyzed the long-term variation of tropical cyclone (TC) in the Northwest Pacific (NWP). People recorded annual variations of Typhoon's maximal wind speed, power dissipation index (PDI) and frequency in this period. The results showed that these meteorology parameters display a rising trend, implying that the TC activity presents a feature of non-stationary stochastic processes. Geographically, we give spatial distribution of their historical maximal wind speed by combining database with parametric TC model. The results indicate that spatial distribution of TC intensity in the NWP is uneven and the sea area east to the Philippines is the most severely affected region by typhoon
Creating a scale for assessing socially sustainable tourism
As destinations absorb even increasing number of visitors, destination managers become progressively more concerned about the longer term viability of tourism from a residentâs perspective. However, few studies have examined the application of real time social sustainability within tourism, particularly how to measure impacts on social sustainability. This study outlines the development of a valid and reliable scale â the Scale of Social Sustainability (SSS) - for tourism that provides an assessment of social sustainability in destination settings. A 10-step procedure was developed drawing upon the related literature. A telephone poll-based survey generated 1,839 valid responses from Hong Kong residents. Hong Kongâs growing popularity as a destination provides a rich array of hostâguest conflict situations. Dimensionality was identified using exploratory and confirmatory factor analyses. Construct validity, reliability, and stability were assessed, and found good, showing that the scale could be used by other destinations worldwide. The theoretical and managerial implications of the scale are discussed, including options for annual surveys giving policy makers alerts before situations worsen. Detailed host resident viewpoints, and the large scale of the survey can help local residents be informed about tourism development and better involved in the policy formation process
Does TouristâHost Social Contact Reduce Perceived Cultural Distance?
Touristâhost social contact significantly influences the perceptions of tourists and deserves more attention from scholars in the field of tourism research. However, studies on the relationship between these two constructs are limited. To address this research gap, the present study develops and validates instruments for measuring social contact and perceived cultural distance in the context of tourism, explores the effects of social contact on perceived cultural distance, and provides implications for tourism stakeholders, including governments, tourism operators, and local communities. A survey was conducted among Hong Kong tourists traveling to Mainland China. The study had two significant findings: (1) the quality of contact negatively influences touristsâ perceived cultural distance and (2) in terms of the quantity of contact, social-oriented contacts negatively influence perceived cultural distance, whereas service-oriented contacts positively affect perceived cultural distance. Implications were provided to contribute to theoretical and empirical realms, and to guide policy formulation
Multi-neutron transfer coupling in sub-barrier 32S+90,96Zr fusion reactions
The role of neutron transfers is investigated in the fusion process below the
Coulomb barrier by analyzing 32S+90Zr and 32S+96Zr as benchmark reactions. A
full coupled-channel calculation of the fusion excitation functions has been
performed for both systems by using multi-neutron transfer coupling for the
more neutron-rich reaction. The enhancement of fusion cross sections for
32S+96Zr is well reproduced at sub-barrier energies by NTFus code calculations
including the coupling of the neutron-transfer channels following the Zagrebaev
semiclassical model. We found similar effects for 40Ca+90Zr and 40Ca+96Zr
fusion excitation functions.Comment: Minor corrections, 11 pages, 4 figures, Fusion11 Conference, Saint
Malo, France, 2-6 mai 201
Elastic model scale and material for underwater structure of cross-sea bridge
With the bridge construction gradually from inland to coast and offshore, underwater structure of cross-sea bridge can encounter more complex hydrodynamic action. When elastic model is used to simulate the hydrodynamic response of underwater structure, the model scale and model material is the first problem must be solved. Based on principle of similitude, elastic model should meet the geometric similarity, kinematic similarity and mechanical similarity. Formula derivation gives the scale conditions for elastic model are as follows, geometric scale (Lr) equals elastic modulus scale (Er) and density scale (??r) equals 1. Then, how to find a material with same density and the elastic modulus is 1/ Lr of prototype is the key to make a model
A Novel Methodology for Identifying Associations and Correlations Between Household Appliance Behaviour in Residential Buildings
AbstractThis paper reports the development of a new methodology for examining all associations and correlations between various household appliance behaviour, thereby discovering hidden patterns of occupant behaviour in residential buildings. The method is based on a basic data mining technique (association rule mining). Its strength lies in its ability to analyse both continuous and nominal data, and examine all associations and correlations automatically. To demonstrate its applicability, it was applied to the measured end-use electricity data in a selected residential building with comprehensive household appliances in Japan. The results show that both direct and indirect associations between occupant behaviour were discovered. The results obtained could provide a deep insight into the interaction between different behaviour, offer detailed recommendations for reducing building energy consumption, and enable the best input parameters of occupant behaviour prediction models to be identified
The effect of surface and Coulomb interaction on the liquid-gas phase transition of finite nuclei
By means of the Furnstahl, Serot and Tang's model, the effects of surface
tension and Coulomb interaction on the liquid-gas phase transition for finite
nuclei are investigated. A limit pressure p-lim above which the liquid-gas
phase transition cannot take place has been found. It is found that comparing
to the Coulomb interaction, the contribution of surface tension is dominate in
low temperature regions. The binodal surface is also addressed.Comment: LaTex, 8 pages with 6 fig
The energy loss may predict rupture risks of anterior communicating aneurysms: A preliminary result
Anterior communicating artery (ACoA) aneurysms are well documented to have a higher rupture risk compared with aneurysms at other locations. However, the risk predicting factors for these aneurysms still remain unclear due to the complex arteries geometries and flow patterns involved. The authors introduce a comprehensive method to quantitatively illustrate the development of ACoA aneurysms using a computational fluid dynamics (CFD) approach. Seven ACoA aneurysms, which included 2 ruptured and 5 unruptured aneurysms, were employed. Patient-specific whole anterior circulation geometries were segmented to simulate the real circumstances in vivo. The energy losses (EL) and flow architectures of these 7 aneurysms were evaluated using an algorithm modality. Overall, the 2 ruptured aneurysms, along with 1 unruptured aneurysm that was defined as highly likely to rupture due to ACoA location and a bleb sitting at the top of the dome, had a significantly larger EL and more complex and unstable flow architecture than the others. Two aneurysms had a negative value of EL indicating that the geometries with aneurysms of the anterior communicating complex (ACC) had a smaller loss of energy than the geometries without aneurysms. Despite a small sample size resulting in a low statistical significance, EL may serve as a development predictor of ACoA aneurysms
Holographic thermalization and generalized Vaidya-AdS solutions in massive gravity
Theoretical Physic
Effect of Tensor Correlations on Gamow-Teller States in 90Zr and 208Pb
The tensor terms of the Skyrme effective interaction are included in the
self-consistent Hartree-Fock plus Random Phase Approximation (HF+RPA) model.
The Gamow-Teller (GT) strength function of 90Zr and 208Pb are calculated with
and without the tensor terms. The main peaks are moved downwards by about 2 MeV
when including the tensor contribution. About 10% of the non-energy weighted
sum rule is shifted to the excitation energy region above 30 MeV by the RPA
tensor correlations. The contribution of the tensor terms to the energy
weighted sum rule is given analytically, and compared to the outcome of RPA.Comment: 13 pages, 2 figures,2 table
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