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  • SAGE Publications  (10)
  • 2015-2019  (10)
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  • SAGE Publications  (10)
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  • 2015-2019  (10)
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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Tourism Economics Vol. 22, No. 3 ( 2016-06), p. 451-465
    In: Tourism Economics, SAGE Publications, Vol. 22, No. 3 ( 2016-06), p. 451-465
    Abstract: This article investigates the rank–size distribution and spatio-temporal dynamics of domestic and inbound tourist flows in Chinese cities using Zipf’s law and the rank clock method. The results show that Zipf’s law captures key characteristics of the rank–size distribution of tourist flows to China’s cities. There are large differences between the inbound and domestic tourist flows not only for the top 100 but also for all cities. Three types of Zipf’s law are found to apply to China’s subregions. At the individual city level, most rank changes of the top 100 inbound and domestic tourist arrival cities appear in the lower part of the rank. The average rank shift distances of the top 100 inbound and domestic tourist arrival cities are 6.122 and 6.006, respectively. The dynamics of the rank–size distribution of domestic tourist flows to the top 100 cities are more stable than those of inbound tourist flows.
    Type of Medium: Online Resource
    ISSN: 1354-8166 , 2044-0375
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2026139-1
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  Journal of Intelligent Material Systems and Structures Vol. 27, No. 18 ( 2016-11), p. 2456-2476
    In: Journal of Intelligent Material Systems and Structures, SAGE Publications, Vol. 27, No. 18 ( 2016-11), p. 2456-2476
    Abstract: A new type of intelligent composite structure is proposed, consisting of reinforced concrete and prestressed hybrid fiber-reinforced polymer sheets. The hybrid fiber-reinforced polymer consists of basalt and carbon fibers. The carbon fibers function as both sensitive and structural materials to improve stiffness of the hybrid fiber-reinforced polymer sheets and provide a self-monitoring function, whereas basalt fibers function only as structural materials to improve their ductility and decrease the cost. A series of experiments were performed to study the mechanical and monitoring performances of the hybrid fiber-reinforced polymer–concrete composite structures. The results show that their mechanical and self-monitoring performances are markedly upgraded through prestressing the hybrid fiber-reinforced polymer sheets. The prestress improves both the strengthening and monitoring performances. Compared with the control beams, the cracking, steel yielding, and peak loads are improved by 44%, 26%, and 36%, respectively. Results reveal that the prestress also upgrades the monitoring sensitivity and stability of the hybrid fiber-reinforced polymer sheets. Since the electrical behavior is closely related to the mechanical behavior of the hybrid fiber-reinforced polymer–concrete composite beams, the strain, cracking, steel yielding, and the debonding and rupture of the hybrid fiber-reinforced polymer sheets can be well identified through the resistance measurement. A built-in health monitoring function is, thus, demonstrated for the intelligent hybrid fiber-reinforced polymer–concrete composite structures.
    Type of Medium: Online Resource
    ISSN: 1045-389X , 1530-8138
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2088313-4
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2018
    In:  Journal of Travel Research Vol. 57, No. 7 ( 2018-09), p. 947-961
    In: Journal of Travel Research, SAGE Publications, Vol. 57, No. 7 ( 2018-09), p. 947-961
    Abstract: Bargaining behavior is popular when tourists shop, with bargaining power representing the surplus sellers or buyers obtain after price negotiations. This article applies a two-tier stochastic frontier analysis to estimate sellers’ and buyers’ (i.e., tourists’) surplus terms as a measure of their respective bargaining power. Using large-scale data on shopping behavior obtained from a domestic tourist survey conducted in Nanjing, China, between 2005 and 2010, our empirical results indicate that in general, tourists exhibit stronger bargaining power than sellers. Additionally, tourists’ net surplus, as a measure of relative bargaining power, is heavily informed by their tripographic and sociodemographic characteristics, with the former being more influential. In particular, tourists traveling with companions and obtaining travel information from friends and mass media tend to have stronger-than-average bargaining power.
    Type of Medium: Online Resource
    ISSN: 0047-2875 , 1552-6763
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2036634-6
    SSG: 14
    SSG: 3,2
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  • 4
    In: Multiple Sclerosis Journal, SAGE Publications, Vol. 24, No. 12 ( 2018-10), p. 1585-1593
    Abstract: This study aims to investigate whether bidirectional degeneration occurs within the visual pathway and, if so, the extent of such changes in neuromyelitis optica spectrum disorder (NMOSD). Methods: In total, 36 NMOSD and 24 healthy controls (HCs) were enrolled. Three-dimensional T1-weighted magnetic resonance imaging (MRI) and diffusion tensor imaging were used to analyze damage to the posterior visual pathway. Damage to the anterior visual pathway was measured by optical coherence tomography. Results: In total, 24 NMOSD with prior optic neuritis (NMOON) patients showed significant reduction of peripapillary retinal nerve fiber layer, inner and outer retinal thickness, lateral geniculate nucleus volume, primary visual cortex volume, and decreased integrity of optic radiations, compared with 12 NMOSD without prior optic neuritis (NMONON) patients and 24 HCs. In NMONON, only the inner retinal thickness and the integrity of optic radiations were significantly reduced in comparison with HCs. Moreover, patients with optic neuritis showed severe bidirectional degeneration, the loss of the RNFL was greater than the atrophy of V1. Conclusion: Our study indicated the presence of trans-synaptic degeneration in NMOSD. Damage to the inner retina and optic radiations can be observed even in NMONON. After an episode of optic neuritis, the anterior visual pathway damage is greater than the posterior visual pathway damage.
    Type of Medium: Online Resource
    ISSN: 1352-4585 , 1477-0970
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2008225-3
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  • 5
    In: Journal of Veterinary Diagnostic Investigation, SAGE Publications, Vol. 30, No. 4 ( 2018-07), p. 619-622
    Abstract: Hemagglutinin (HA) cleavage is critical for virulence of influenza viruses. The amino acid residue at the P6 position of the HA cleavage site (HACS) has been shown to be most variable and to have a direct correlation with the cleavage efficiency and pathogenicity of H5N1 avian influenza viruses (AIVs) in mammals. Among these amino acid variants, serine has been associated with the highest virulence in mammals, and its detection may serve as an indicator for H5N1 AIVs with high pathogenicity and potential public risk. We developed a rapid detection method based on reverse-transcription (RT)-PCR and pyrosequencing to detect a mutation at the HACS that is associated with increased pathogenicity of H5N1 AIVs in mammals. Herein, we provide a specific, sensitive, and reliable method for rapid detection of one of the virulence determinants associated with increased pathogenicity of H5N1 AIVs in mammals.
    Type of Medium: Online Resource
    ISSN: 1040-6387 , 1943-4936
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2265211-5
    SSG: 22
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  • 6
    Online Resource
    Online Resource
    SAGE Publications ; 2015
    In:  Advances in Mechanical Engineering Vol. 7, No. 3 ( 2015-03-01), p. 168781401456854-
    In: Advances in Mechanical Engineering, SAGE Publications, Vol. 7, No. 3 ( 2015-03-01), p. 168781401456854-
    Abstract: Learning from the microstructure of the convex (concave) and ridging (triangle and arc-shaped) shapes of fresh lotus leaves and shark skin, bionic ridging shovels was designed with the characteristics of adhesion and resistance reduction. Ten ridging shovel models were established, and the interaction process with the soil by ANSYS is discussed. Stress analysis results showed that the bionic ridging shovel was more obvious in visbreaking and in the resistance reduction effect. An indoor soil bin experiment with the bionic ridging shovel and the prototype ridging shovel was operated as follows: the ridging resistance of the three types of ridging shovel was tested under the condition of two soil moistures (18.61% and 20.9%) and three different ridging speeds (0.68, 0.87, and 1.11 m/s). In this article, the structure, the mechanism, and their relationship to the functions are discussed. The results of this study will be useful in practical application in the field of agricultural machinery toward practical use and industrialization.
    Type of Medium: Online Resource
    ISSN: 1687-8140 , 1687-8140
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 2501620-9
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  • 7
    Online Resource
    Online Resource
    SAGE Publications ; 2017
    In:  International Journal of Advanced Robotic Systems Vol. 14, No. 5 ( 2017-09-01), p. 172988141773189-
    In: International Journal of Advanced Robotic Systems, SAGE Publications, Vol. 14, No. 5 ( 2017-09-01), p. 172988141773189-
    Abstract: Hydraulic actuated quadruped robot similar to BigDog has two primary performance requirements, load capacity and walking speed, so that it is necessary to balance joint torque and joint velocity when designing the dimension of single leg and controlling its motion. On the one hand, because there are three joints per leg on sagittal plane, it is necessary to firstly optimize the distribution of torque and angular velocity of every joint on the basis of their different requirements. On the other hand, because the performance of hydraulic actuator is limited, it is significant to keep the joint torque and angular velocity in actuator physical limitations. Therefore, it is essential to balance the joint torque and angular velocity which have negative correlation under the condition of constant power of the hydraulic actuator. The main purpose of this article is to optimize the distribution of joint torques and velocity of a redundant single leg with joint physical limitations. Firstly, a modified optimization criterion combining joint torques with angular velocity that takes both support phase and flight phase into account is proposed, and then the modified optimization criterion is converted into a normal quadratic programming problem. A kind of recurrent neural network is used to solve the quadratic program problem. This method avoids tremendous matrix inversion and fits for time-varying system. The achieved optimized distribution of joint torques and velocity is useful for aiding mechanical design and the following motion control. Simulation results presented in this article confirm the efficiency of this optimization algorithm.
    Type of Medium: Online Resource
    ISSN: 1729-8814 , 1729-8814
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2017
    detail.hit.zdb_id: 2202393-8
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  • 8
    In: Interventional Neuroradiology, SAGE Publications, Vol. 25, No. 6 ( 2019-12), p. 628-634
    Abstract: The primitive trigeminal artery is an anastomotic vessel of the carotid–basilar artery system that occurs only transiently during the embryonic period. Persistent primitive trigeminal artery occurs in approximately 0.1–0.6% of the population. Here, we report the case of a 60-year-old woman with Fisher II grade subarachnoid haemorrhage. Computed tomography angiography demonstrated a lateral, Saltzman type I persistent primitive trigeminal artery with three cerebral aneurysms, including one anterior communicating artery aneurysm, one suspicious right anterior choroidal artery aneurysm and one distal basilar artery aneurysm supplied by the persistent primitive trigeminal artery. All three aneurysms were treated with coil embolisation. At the 8-month follow-up, the anterior communicating artery aneurysm had a neck remnant, the other two aneurysms exhibited complete occlusion. Persistent primitive trigeminal artery with multiple cerebral aneurysms is extremely rare, and only seven cases of persistent primitive trigeminal artery with multiple cerebral aneurysms have previously been reported in publications that included information on treatment. Most aneurysms were treated by open surgery. This is the first report of coil embolisation treatment of multiple aneurysms in persistent primitive trigeminal artery patients with follow-up results, and provides relevant and valuable information about the persistent primitive trigeminal artery and the endovascular treatment of multiple aneurysms in persistent primitive trigeminal artery patients.
    Type of Medium: Online Resource
    ISSN: 1591-0199 , 2385-2011
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2571161-1
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  • 9
    Online Resource
    Online Resource
    SAGE Publications ; 2016
    In:  International Journal of Advanced Robotic Systems Vol. 13, No. 6 ( 2016-12-01), p. 172988141665774-
    In: International Journal of Advanced Robotic Systems, SAGE Publications, Vol. 13, No. 6 ( 2016-12-01), p. 172988141665774-
    Abstract: Differing from the commonly used spring loaded inverted pendulum model, this paper makes use of a two-mass spring model considering impact between the foot and ground which is closer to the real hopping robot. The height of upper mass which includes the upper leg and body is the main control objective. Then we develop a new kind of control algorithm acting on two levels: The upper level aims to achieve the desired velocity of the upper mass based on a stable limit cycle, where three different controllers are used to regulate the limit cycle; the target of the lower level is to drive the system to converge to the desired state and control the contact force between the foot and ground within an appropriate range based on the inner force control at the same time. Simulation results presented in this paper confirm the efficiency of this control algorithm.
    Type of Medium: Online Resource
    ISSN: 1729-8814 , 1729-8814
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
    detail.hit.zdb_id: 2202393-8
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  • 10
    Online Resource
    Online Resource
    SAGE Publications ; 2019
    In:  Technology in Cancer Research & Treatment Vol. 18 ( 2019-01-01), p. 153303381987480-
    In: Technology in Cancer Research & Treatment, SAGE Publications, Vol. 18 ( 2019-01-01), p. 153303381987480-
    Type of Medium: Online Resource
    ISSN: 1533-0346 , 1533-0338
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2146365-7
    detail.hit.zdb_id: 2220436-2
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