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Chinese Journal of Chemical Engineering 2024年第8期72卷 34-43页

作者： Chen shen Yuanhui Ji Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing 211189China

Biological solubility is one of the important basic parameters in the development process of poorly soluble drugs,but the current measurement methods are mainly based on a large number of experiments,which are time-consuming and *** is still a lack of effective theoretical models to accurately describe and predict the biological solubility of drugs to reduce ***,in this study,osaprazole and irbesartan were selected as model drugs,and their solubility in solutions containing surfactants and biorelevant media was measured *** calculating the parameters of each component using the perturbed-chain statistical associating fluid theory(PC-SAFT)model,combined with pH-dependent and micellar solubilization models,the thermodynamic phase behavior of the two drugs was successfully modeled,and the predicted results were in good agreement with the experimental *** results demonstrate that the model combination used provides important basic parameters and theoretical guidance for the development and screening of poorly soluble drugs and related formulations.

关键词： Biorelevant media pH-dependent solubility Micellar solubilization PC-SAFT Active pharmaceutical ingredients

Assessing cooling energy reduction potentials by retrofitting traditional cavity walls into passively ventilated cavity walls

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Building Simulation 2021年第4期14卷 1295-1309页

作者： Ri Na Zhigang shen Department of Civil and Environmental Engineering University of DelawareNewarkDE19716USA The Durham School of Architecture Engineering and Construction University of Nebraska LincolnLincolnNE68588USA

A major roadblock in achieving substantial building energy reduction is the low performance of old buildings that account for a significant portion of the building energy *** low-cost energy retrofit solutions that do not disrupt occupants’daily life during the retrofitting is the key to successful building energy retrofit *** this paper,a novel and low-cost exterior wall retrofitting solution is introduced,and its performance in reducing space cooling load was quantitatively evaluated to demonstrate its feasibility and *** primary goal of this paper is to provide a quantitative assessment of the cooling-energy savings potential by using the proposed new wall *** intended retrofitting targets are the large amount of existing cavity-wall buildings located in hot climate *** quantification of the before-after heat-flux reduction was conducted through a 3-dimensional steady-state low turbulence computational fluid dynamics(CFD)model,which is validated by benchmarking its prediction against the published experimental case *** outcomes of the investigation suggest that this simple low-cost solution has great potentials in reducing buildings’summer cooling load in hot climate *** applicability of this solution is not limited to retrofitting existing *** energy-efficient building designs can also adopt this solution in their envelope systems.

关键词： low-cost energy retrofit building envelope cavity wall stack effect space cooling energy reduction CFD

Three-Dimensional Scene Encryption Algorithm Based on Phase Iteration Algorithm of the Angular-Spectral Domain

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IEEE/CAA Journal of Automatica Sinica 2020年第4期7卷 1074-1080页

作者： Chao Han Yuzhen shen the School of Electrical Engineering Anhui Polytechnic Universityand also with the Key Laboratory of Advanced Perception and Intelligent Control of High-end EquipmentMinistry of EducationWuhu 241000China

In order to increase the capacity of encrypted information and reduce the loss of information transmission, a three-dimensional(3 D) scene encryption algorithm based on the phase iteration of the angular spectrum domain is proposed in this paper. The algorithm, which adopts the layer-oriented method, generates the computer generated hologram by encoding the three-dimensional scene. Then the computer generated hologram is encoded into three pure phase functions by adopting the phase iterative algorithm based on angular spectrum domain,and the encryption process is completed. The three-dimensional scene encryption can improve the capacity of the information,and the three-phase iterative algorithm can guarantee the security of the encryption information. The numerical simulation results show that the algorithm proposed in this paper realized the encryption and decryption of three-dimensional scenes. At the same time, it can ensure the safety of the encrypted information and increase the capacity of the encrypted information.

关键词： Angular spectrum diffraction information capacity phase iteration three-dimensional scene encryption

Contract Manufacturer's Market Entry and Its Impact under Asymmetric Customer Loyalty

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Journal of Systems Science and Systems Engineering 2022年第2期31卷 174-203页

作者： Jing Hou Houcai shen School of Management and Engineering Nanjing UniversityNanjing 210093China

We study a supply chain in which an original equipment manufacturer(OEM)outsources manufacturing functions to a contract manufacturer(CM)for cost *** addition to accepting the OEM's order,the CM can develop self-branded products and enter the *** of the OEM's well-known brand and long-term good reputation,we take the asymmetric customer loyalty into consideration-a fraction of customers are loyal customers(LCs)who only consider buying the product from the OEM,while other customers in the market are non-loyal customers(NCs)who might switch to purchasing the CM7s product because of the lower selling *** explore whether the CM will enter the end-market and if so,what is the impact of the market entry on the OEM and the entire supply ***,we find that there will be no market entry when the CM is relatively strong,i.e.,the CM is able to provide self-branded products with relatively high acceptance and the CM has a relatively large bargaining *** addition,when the NC segment is an important profit source for the OEM,i.e.,the NCs7 market size is relatively large and their willingness-to-pay is relatively high,the market entry will not occur,*** OEM's profit is always hurt by the CM's market entry unless the OEM always only sells the product to the LCs,while the supply chain sometimes can get *** numerical simulations,we reveal the relationships between the profit change of different parties and the key parameters,such as the relative willingness-to-pay and market sizes of two types of customers,the CMrs bargaining power and the acceptance of the CMrs product,when the market entry becomes an available option for the *** impact of production cost difference on the market entry decision and profit changes is also analyzed in the extension when producing the OEM's product is more costly for the CM than producing the self-branded product.

关键词： Market entry contract manufacturer original equipment manufacturer loyal customer non-loyal customer

Research on high-performance English translation based on topic model

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Digital Communications and Networks 2023年第2期9卷 505-511页

作者： Yumin shen Hongyu Guo Zhejiang Gongshang University Hangzhou310018China Graduate School of Education University of Perpetual Help System DALTAMetro Manila1740Philippines

Retelling extraction is an important branch of Natural Language Processing(NLP),and high-quality retelling resources are very helpful to improve the performance of machine ***,traditional methods based on the bilingual parallel corpus often ignore the document background in the process of retelling acquisition and *** order to solve this problem,we introduce topic model information into the translation mode and propose a topic-based statistical machine translation method to improve the translation *** this method,Probabilistic Latent Semantic Analysis(PLSA)is used to obtains the co-occurrence relationship between words and documents by the hybrid matrix *** we design a decoder to simplify the decoding *** show that the proposed method can effectively improve the accuracy of translation.

关键词： Machine translation Topic model Statistical machine translation Bilingual word vector Retelling

Riemann-Finsler Geometry with Applications to Information Geometry

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Chinese Annals of Mathematics,Series B 2006年第1期27卷 73-94页

作者： Zhongmin shen Dedicated to the memory of Shiing-shen Chern

Information geometry is a new branch in mathematics, originated from the applications of differential geometry to statistics. In this paper we briefly introduce Riemann-Finsler geometry, by which we establish Information Geometry on a much broader base, so that the potential applications of Information Geometry will be beyond statistics.

关键词： Riemann-Finsler geometry Information geometry

Phase-field modelling of spinodal decomposition with G-phase precipitation during ageing

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Science China(Technological Sciences) 2021年第12期64卷 2568-2576页

作者： SHI JiaQing shen Yao The State Key Lab of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The duplex stainless steels(DSSs)are susceptible to thermal ageing embrittlement due to the spinodal decomposition and Gphase precipitation in the ferritic *** study presents a ternary(Fe-Cr-Ni)phase-field model for the simulation of spinodal decomposition with concurrent G-phase *** Cahn-Hilliard equations and one Ginzburg-Landau equation are used in the model to describe the diffusion of Cr,Ni,and the growth of G-phase,*** model is able to generate a spinodally-interconnected structure with G-phase particles near theα-α′interfaces,similar to experimental *** kinetic synergy between spinodal decomposition and G-phase precipitation is *** simulation results indicate that Gphase can enhance the evolution of spinodal decomposition by occupying the volume where the decomposition could otherwise occur,and that the system’s elastic strain energy is largely contributed by G-phase rather than spinodal *** results would help in better understanding the states of the materials for plant structural integrity assessment and life management.

关键词： ferrite DSSs spinodal decomposition G-phase phase-field model

Graded Lie Algebras of Dimension Five and Some Artin-Schelter Regular Algebras

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Algebra Colloquium 2019年第2期26卷 243-258页

作者： Yuan shen Department of Mathematics Zhejiang Sci-Tech University Hangzhou 310018 China

In this paper, we show that there are only seven graded Lie algebras of dimension 5 generated in degree 1 up to isomorphism. By parameterizing the relations of the universal enveloping algebras of three of those graded Lie algebras, we construct some new Artin-Schelter regular algebras of global dimension 5. We prove that those algebras are all strongly noetherian, Auslander regular and Cohen-Macaulay, and describe their Nakayama automorphisms.

关键词： Artin-Schelter regular algebras graded Lie algebras Nakayama automorphisms

THE NEARLY K¨AHLER STRUCTURE AND MINIMAL SURFACES IN S^(6)

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Chinese Annals of Mathematics,Series B 1998年第1期19卷 87-96页

作者： shen YIBING Department of Mathematics Hangzhou University Hangzhou 310028 China

In terms of the almost complex connection and the unitary moving frame, a complex version on the theory of the nearly Khler structure in S^(6) is given. Under this framework, minimal surfaces in the nearly Khler S^(6) are studied. A complete classification for c omplete minimal surfaces in S^(6) with constant Khler angle and nonnegative curvature is given. Moreover, almost complex curves in S^(6) are considered.

关键词： Nearly Khler structure Minimal surfaces Khler angle

ON THE CONVEXITY OF SOME BANACH SPACES

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Chinese Annals of Mathematics,Series B 2001年第1期22卷 75-84页

作者： shen YULIANG Department of Mathematics Suzhou University Suzhou 215006 China

Let R be a hyperbolic Riemann surface of conformal infinite type. Denote by A the Banach space of all integrable holomorphic quadratic differentials on R, and by B0 and B the predual and dual of A, respectively. This ... 详细信息

关键词： Convexity Quadratic differential Beltrami differential