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Search Results: 1 - 10 of 48806 matches for " Hong Tang "
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Is History Real? A Cautious Answer  [PDF]
Ruei-Hong Tang
Open Journal of Philosophy (OJPP) , 2014, DOI: 10.4236/ojpp.2014.43048
Abstract:

This paper cautiously affirms history as real, in three stages: we begin, 1) by briefly reviewing the historical swings between the objective view of history and the relative view of history, followed by, 2) our careful inquiry into how history is composed by “I”, “here”, and “now” spontaneously spreading in time, and finally, 3) in the light of this consideration we argue for our cautious answer, “history is real”, as 4), we define “caution” and “real”.

Optimal wavelength selection algorithm of non-spherical particle size distribution based on the light extinction data
Tang Hong
Thermal Science , 2012, DOI: 10.2298/tsci1205353t
Abstract: In this paper, the anomalous diffraction approximation method is improved for calculating the extinction efficiency of non-spherical particles. Through this step, the range of the refractive index of particles can be enlarged, and the improved anomalous diffraction approximation method can be applied easily to the calculation of extinction efficiency for the most kinds of non-spherical particles. Meanwhile, an optimal wavelength selection algorithm is proposed for the inversion of non-spherical particle size distribution in the dependent mode. Through the improved anomalous diffraction approximation method, the computation time is substantially reduced compared with the rigorous methods, and a more accurate inversion result of particle size distribution is obtained using the optimal wavelength selection method.
Retrieval of spherical particle size distribution with an improved Tikhonov iteration method
Tang Hong
Thermal Science , 2012, DOI: 10.2298/tsci1205400t
Abstract: The problem of retrieval for spherical particle size distribution in the independent mode is studied, and an improved Tikhonov iteration method is proposed. In this method, the particle size distribution is retrieved from the light extinction data through the Phillips-Twomey method firstly in the independent mode, and then the obtained inversion results of the particle size distribution is used as the initial distribution and the final retrieved particle size distribution is obtained. Simulation experiments indicate that the spherical particle size distributions obtained with the proposed method coincide fairly well with the given distributions.
Heart valve closure timing intervals in response to left ventricular blood pressure  [PDF]
Hong Tang, Jiao Gao, Yongwan Park
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.61009
Abstract:

This article investigates the relationships between heart valve closure timing intervals and left ventricular systolic blood pressure (LVSBP). For this investigation, the cardiopulmonary system is modeled as an analog circuit, including heart chambers, the distal and proximal aorta, distal and proximal systemic arteries/veins, systemic capillaries, the vena cava, the distal and proximal pulmonary artery, distal and proximal pulmonary arteries/veins, pulmonary capillaries and physiological control of heart rate and cardiac contractibility. In this model, the ventricles, atria and arteries were modeled as advanced pressur-volume relationships. A vagal-sympathetic mechanism was adopted to simulate transient systemic and pulmonary blood pressure. Four intervals, i.e., the timing interval between mitral and aortic valve closure (TIMA), the timing interval between aortic and mitral valve closure (TIAM), the timing interval be- tween aortic and pulmonary valve closure (TIAP) and the timing interval between mitral and tricuspid valve closure (TIMT), are further defined in a heart cycle to illustrate their relationships to LVSBP. Simula- tions showed that the TIMA, TIAM and TIAP have strong negative correlations with LVSBP; meanwhile, the TIMT has a slightly negative relationship with LVSBP. To further validate the relationships, 6 healthy male subjects were experimentally evaluated. The intervals were extracted from non-invasively sampled heart sound signals taken from the surface of the thorax. The experiments showed relationships consistent with those obtained by simulations. These relationships may have potential applications for noninvasively accessing LVSBP in real-time with a high time resolution of one heartbeat.

 

The Reaserch on Characteristics of Knowledge Workers and Their Motivating Factors: A Review and Comparison Study  [PDF]
Hong Zhan, Tian Tang, Yue Zhang
American Journal of Industrial and Business Management (AJIBM) , 2013, DOI: 10.4236/ajibm.2013.36064
Abstract: The current study surveyed major studies on the characteristics of motivating factors for knowledge workers, both in the USA and in China. Comparisons were made between studies in the two countries, and new perspectives were offered on the motivating factors for knowledge workers. Future research directions were proposed.
A new role for T cells in dampening innate inflammatory responses
Hong Tang,YangXin Fu
Science China Life Sciences , 2010, DOI: 10.1007/s11427-010-0040-5
Abstract:
Effects of Panax notoginseng saponins on mRNA expressions of interleukin-1β, its correlative factors and cysteinyl-aspartate specific protease after cerebral ischemia-reperfusion in rats
Ying-hong TANG
Zhong Xi Yi Jie He Xue Bao , 2007,
Abstract: Objective: To investigate the effects of Panax notoginseng saponins (PNS) on mRNA expressions of interleukin-1β (IL-1β), interleukin-1 receptor type Ⅰ (IL-1RⅠ), interleukin-1 receptor antagonist (IL-1ra), intercellular adhesion molecule-1 (ICAM-1), cysteinyl-aspartate specific protease-1 (caspase-1), caspase-3 and caspase-8 after cerebral ischemia-reperfusion in rats.Methods: Focal cerebral ischemia reperfusion in rats was induced by the method of nylon monofilament via the internal carotid artery. PNS was administered intraperitoneally respectively five minutes before cerebral ischemia and twelve hours after cerebral ischemia. After cerebral ischemia for two hours followed by reperfusion for twenty two hours, the mRNA expressions of IL-1β, IL-1RⅠ, IL-1ra, ICAM-1, caspase-1, caspase-3 and caspase-8 in brain tissue were determined by reverse transcription polymerase chain reaction assay.Results: After cerebral ischemia for two hours followed by reperfusion for twenty two hours, the mRNA expression levels of IL-1β, IL-1RⅠ, IL- 1ra, ICAM-1, caspase-1, caspase-3 and caspase-8 in brain tissue in the untreated group were obviously elevated as compared to those in the sham-operation group (P<0.05 or P<0.01). The mRNA expression levels of IL-1β, IL-1RⅠ, IL-1ra in brain tissue in the PNS group were lower than those in the untreated group, but higher than those in the sham-operation group, and without statistical differences as compared to those in the sham-operation group and in the untreated group (P>0.05). The mRNA expression level of caspase-3 in brain tissue in the PNS group was significantly lower than that in the untreated group (P<0.05), but PNS had no effect on the mRNA expression levels of ICAM-1, caspase-1 and caspase-8 in brain tissue.Conclusion: PNS can inhibit the mRNA expression of caspase-3, slightly inhibit the mRNA expressions of IL-1β and its correlative inflammatory factors in brain tissue. The protective effects of PNS on cerebral injury induced by ischemia-reperfusion may be related to inhibiting the mRNA expressions of caspase-3, IL-1β and its correlative inflammatory factors in brain tissue.
Similarity Measures of Satellite Images Using an Adaptive Feature Contrast Model  [PDF]
Hong Tang, Adu Gong, Shaodan Li, Wenbin Yi, Chuanfu Yang
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.42031
Abstract:

Similarity measurement is one of key operations to retrieve “desired” images from an image database. As a famous psychological similarity measure approach, the Feature Contrast (FC) model is defined as a linear combination of both common and distinct features. In this paper, an adaptive feature contrast (AdaFC) model is proposed to measure similarity between satellite images for image retrieval. In the AdaFC, an adaptive function is used to model a variable role of distinct features in the similarity measurement. Specifically, given some distinct features in a satellite image, e.g., a COAST image, they might play a significant role when the image is compared with an image including different semantics, e.g., a SEA image, and might be trivial when it is compared with a third image including same semantics, e.g., another COAST image. Experimental results on satellite images show that the proposed model can consistently improve similarity retrieval effectiveness of satellite images including multiple geo-objects, for example COAST images.

Gray Relevance Algorithm Based Routing Protocol in Ad Hoc Network  [PDF]
Hong Tang, Pusheng He, Haolan Yang, Maosheng Zheng
Communications and Network (CN) , 2013, DOI: 10.4236/cn.2013.53B2074
Abstract:

The characteristics of nodes moving arbitrarily and the network topology changing frequently lead to AODV routing protocol, which uses minimum hop-count as the metric for route selection, facing intermittent connectivity frequently which would cause QoS of network degradation in Ad Hoc Network. In this paper, we integrate three cross layer infor-mation which consists of the remaining energy of nodes, the remaining queue length and the hop-count from source node to destination node. Then we present the GRA-AODV routing protocol based on the gray relevance algorithm. By comparing the simulation and experimental results, in the case of slightly increase in routing overhead, the improved Gray Relevance Algorithm-AODV routing possesses lower average end to end delay and lower packet loss rate, and it has superior robustness in the mobile Ad Hoc Network with network topology changing frequently.

Effect of Different Splint Thicknesses on Occlusal Function and Temporomandibular Joint Sounds: A Clinical Report  [PDF]
Yuyao Tang, Hefei Li, Yuming Chen, Lisha Zhu, Hong Kang
Open Journal of Stomatology (OJST) , 2018, DOI: 10.4236/ojst.2018.812031
Abstract: Background: Occlusal splint therapy, which is a conservative approach to treat temporomandibular disorders (TMDs) and bruxism, can change the occlusal contact of dentition. However, little is known about the variation in bite force and temporomandibular joint (TMJ) sounds. The objective of this case report is to compare the effects of different splint thicknesses constructed by vacuum lamination technology on occlusal function and TMJ sounds. Clinical Presentation: This study presents a 24-year-old male with bruxism. Four splints of different thicknesses (0.6 mm, 1 mm, 2.5 mm and 3 mm) were fabricated and tested. Then, an array of occlusal data were recorded and analyzed by the T-ScanIII system and joint vibration analysis (JVA). Conclusion: The results reveal that splints of different thicknesses manufactured by the vacuum hot-lamination apparatus may cause a change in occlusal force.
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