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徐昌盛 ( Xu¸ Changsheng ) 한국중국산문학회 2020 중국산문연구집간 Vol.10 No.-
In the Book of Jin Li Zhi, the discussion articles about Fu Xian and Zhi Yu’s "two social groups" showed the basic form of thesis on etiquette in the Western Jin dynasty, these articles mainly focused on the reasoning methods thought differentiating names and analyzing the theory, and the expression form of quoting and annotating the classics. The common method of differentiating names influenced the characteristics of the thesis on Etiquette in Western Jin dynasty in both the repeated and positive discussion of the rites and texts, also, the different emphasis on the annotations of the classics reflected the differences and the traces of the transformation of the thesis styles in the Wei and Jin dynasties. The study of rites is a prominent study in the Western Jin Dynasty. Thesis on etiquette is an important part of article-written in the Western Jin Dynasty, presenting a unique appearance of article-written in the Western Jin Dynasty.
Changsheng Zhu,Mingfang Zhu,Jieqiong Liu,Li Feng 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.10
By coupling the phase field model of dendrite growth with the Lattice Boltzmann method (LBM), a Phase field LBM model (PFLBM) that can simulate 3D dendrite non-isothermal growing from the under-cooled melt of a pure substance in forced flow has been established. Taking high-purity succinonitrile (SCN) as an example, the effects of flow on 3D dendritic growth were studied. The calculation efficiency of LBM and SOLA algorithm was compared under the same condition. The results show that, with the PF-LBM model, the effects of forced flow on 3D dendrite growth morphology and the dendrite asymmetric growth can be quantitatively modeled in large scale, and the dendrite growth is consistent with the crystallization theory. The LBM algorithm overcomes the weakness of a large amount of calculation and slow computation speed that exists in the traditional algorithm, and it achieves a speedup of 11.7 when the calculation region size is 200 3 .
Effects of Ambient Pressure and Injection Pressure on Diesel and Natural Gas Dual Fuel Spray
( Changsheng Shao ),( Qian Wang ),( Xiaoqiang Tan ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-
Dual fuel engines operating with direct injected natural gas (NG) and pilot diesel has been attracted by many engine researchers. With this system, small quantities of diesel auto-ignite, and NG is then ignited by the pilot diesel flame. This stratified combustion technique provides better fuel economy and more efficient combustion, maintaining the power output of an equivalently-sized conventional diesel engine. Comparatively lower emissions of NOx and particulate matter were also recorded. For the further understanding of dual fuel spray, effects of ambient pressure and injection pressure on diesel and NG dual fuel spray are investigated. Both NG and diesel are directly injected into an optical constant volume chamber by a dual fuel injector combiner for different injection pressure and ambient pressure. Schlieren photography is used to visualize the development of dual fuel spray. A Matlab processing script was developed to extract useful qualitative and quantitative information from each video frame. A comparison is made between NG jet characteristics in single fuel model (SFM) and dual fuel model (DFM). Results shows that in both SFM and DFM, the tip penetration decreased with the increase of the ambient pressure and the decrease of NG injection pressure, while the cone angle increased with the increase of the ambient pressure and the decrease of NG injection pressure. At different ambient pressure, the diesel spray has little influence on NG tip penetration, however it has impact on NG cone angle. The cone angle in DFM is higher than that in SFM. With the increase of ambient pressure, the diesel spray has less impact on NG cone angle. At different NG injection pressure, the diesel spray has influence on both NG tip penetration and cone angle. With the increase of NG injection pressure, diesel spray has less impact on NG cone angle.
Changsheng Zhang,Jiahong Zhang,Zhengang Zhao 한국광학회 2020 Current Optics and Photonics Vol.4 No.4
An approach based on an integrated photonic Ti: LiNbO 3 Y branch has been proposed, designed, and analyzed for the microwave instantaneous frequency measurement (IFM). By designing the Y branch with length L = 6545 µm and refractive index N TE - N TM = 0.0764, a complementary optical filter with free spectral range (FSR) of 600 GHz is constituted, which results in a maximum measureable frequency of 300 GHz being obtained. Theoretical analysis on the temperature stability of the Ti: LiNbO 3 Y branch shows that the FSR variation of the complementary filter is 0.3% for the temperature change of 100 K, which indicates that the IFM approach will have a better stability. All these results demonstrate that the proposed IFM approach has potential capability to be used for the increasingly higher microwave IFM with better stability.
Research on Preparation Methods of Ultrafine Softwood Powder
Changsheng Fan,Dongxia Yang,Hongling Wang,Yan Sun,Hua lou,Hongru Yang 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.4
Pine wood sawdust is used as raw materials for experimental processing into ultrafine wood powder. Sizes of ultrafine wood powder particles serve as a standard for measuring ultrafine processing. The core part of the experimental processing equipment is the millstone which can exert great shear force and grinding force on strong fiber materials so as to ensure the successful preparation of ultrafine particles. The “equilibrium orbit” model is used to simulate processed superfine particles in calculating separation performance. Moreover, the CFD is chosen for simulating separation performance of wood powder particles with different sizes in the two-phase flow field, so as to ensure the successful separation and grading of wood powder particles with different sizes in the practical processing. Research is made on physical properties of collected wood powder as samples with different sizes and influence on composite material properties when ultrafine wood powder is taken as padding. Research on ultrafine wood powder provides meaningful experimental data and theoretical support for the future research on micro-nano fibrils.
Value Differences in Image Creation Between Human and AI and the Underlying Influence
Changsheng Wang 한국멀티미디어학회 2024 멀티미디어학회논문지 Vol.27 No.6
The burgeoning field of Artificial Intelligence (AI) art has introduced a novel dimension to the art industry, significantly influencing the economics of the art market. Despite its growing prominence, discussions surrounding the valuation of AI-generated images remain limited. This study employs a mixed-methods approach to offer an in-depth exploration of the valuation of AI-generated images and the key factors that affect their appraisal. Quantitative analysis indicates a difference in the valuation of abstract paintings, with artworks attributed to human artists receiving higher valuations compared to those attributed to AI, suggesting a public bias in the perception of AI-created art images; whereas, in the concrete painting category, no statistically significant difference in valuation was observed between AI and human creators, implying a correlation between the quality of AI-generated images and their perceived value. Qualitative analysis identifies similar image oversupply, negative public opinions, and differences in image quality as the primary factors affecting the value of AI-generated images. This study not only explains the differences in valuation between AI-generated and human-drawn images but also highlights the challenges and opportunities in cultivating societal acceptance of AI art images, offering crucial insights for future research on the value of AI art in the art market.
Input Disturbance Suppression for Port-controlled Hamiltonian System via the Internal Model Method
Changsheng Li,Yuzhen Wang 제어·로봇·시스템학회 2013 International Journal of Control, Automation, and Vol.11 No.2
This paper investigates the input disturbance suppression problem for nonlinear Port-Controlled Hamiltonian (PCH) system and presents a number of new results on the controllers design via the internal model approach. Different from the existing results on this topic we consider two cases. Firstly, the case of the disturbance generated from a linear Hamiltonian system acts through a channel other than the input channel is studied by adopting a method of decomposing the control into two parts and designing an internal model to zero the effect of the exogenous disturbance. Secondly, the case of the disturbance generated from a bounded nonlinear exosystem is studied by presenting a procedure of designing a nonlinear internal model to cancel the effect of the disturbance under two fundamental as-sumptions. Moreover, to further improve the suppression, a more effective internal model is also de-signed under less hypotheses. Finally, as an useful application, a corollary is presented by applying these results on PCH system to general nonlinear affine system. Simulations of a third-order synchro-nous generator model with disturbance generated from a nonlinear exosystem show the effectiveness of the designed internal model.