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INFORMATION TRANSMISSION IN LAUNCHING A NEW PRIVATE LABEL PRODUCT

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Journal of Systems Science and Systems Engineering 2009年第1期18卷 111-127页

作者： yu qian Xiaowo TANG School of Management and Economics University of Electronic Science and Technology of China Chengdu 610054 China

With the buyer＇s market strengthening, retailers have begun to lead in product development by introducing their own private label products. The success of such a new product launch relies on transmission of demand information along a supply chain, yet this new phenomenon has been little researched. This paper attempts to address such an issue by modeling vertical information transmission in a supply chain consisting of a retailer and a manufacturer. The retailer would like to introduce a new private label product and knows the demand of the product to be either high or low, while the manufacturer only knows the prior distribution of the demand type. This study attempts to find whether a wholesale-price contract or a two-part tariff contract can facilitate the manufacturer to identify the demand type. The results show that the two-part tariff contract is always effective in realizing information transmission as long as the retailer＇s reserve profit remains within a reasonable range.

关键词： Information transmission private label product contract

A LIMIT LAW FOR FUNCTIONALS OF MULTIPLE INDEPENDENT FRACTIONAL BROWNIAN MOTIONS

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Acta Mathematica Scientia 2020年第3期40卷 734-754页

作者： qian yu School of Statistics East China Normal UniversityShanghai 200241China

Let B={B^H(t)}t≥0 be a d-dimensional fractional Brownian motion with Hurst parameter H∈(0,1).Consider the functionals of k independent d-dimensional fractional Brownian motions 1/√n∫0^ent1⋯∫0^entk f(B^H,1(s1)+⋯+B^H,k(sk))ds1⋯dsk,where the Hurst index H=k/*** the method of moments,we prove the limit law and extending a result by Xu\cite{xu}of the case k=*** can also be regarded as a fractional generalization of Biane\cite{biane}in the case of Brownian motion.

关键词： Limit theorem fractional Brownian motion method of moments chaining argument

Effects ofmodulenumberand firing conditiononchargethermal safetyingunchamber

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Defence Technology（防务技术） 2022年第1期18卷 27-37页

作者： Huan-yu qian Yong-gang yu Jing Liu School of Energy and Power Engineering Nanjing University of Science and Technology Narjing 21094 China Acudemny of Opto-Electroric China Electronis Technology Group Corporation(AOE CETC)Tianjin300308China

Thermal safety of modular charge which is fed into and retained in the chamber after gun fires consecutively is first investigated with cook-off method,A two-dimensional cook-off model of modular charge in gun chamber is established and the cook-off process of modular charge in gun chamber is numerically *** the effects of module number and firing condition on charge thermal safety are evaluated by researching the cook-off response characteristics of *** results show that under conditions of different module numbers the cook-off responses all occur on the module closest to the boundary of missile,and the single-base propellants located at the inner surface of cartridge ignite *** the number of loaded module changes from 1 to 6,the cook-off response temperatures vary little,only in a small range of 478.1 K-482.4 *** cook-off response times decrease logarithmically in the range of 211.25-166.7 s with the increasing length of residual air gap in gun *** simulation results are well matched with the experimental ***,different firing conditions have greatinfluence on the cook-off response time,minor influence on the initial response position and little in-fluence on the response *** the three conditions of consecutive 32 launches with 5 rounds/min,43 launches with 1 round/min,and 41 launches with different firing frequencies,the cook off response temperatures are 479.2 K,481.1 K and 479.9 K respectively and the response times are 709.25,211.2 s and 214.4 s *** response position is near the middle area of the inner cartridge surface in the former condition and near the right area in the latter two conditions.

关键词： Thermal safety Modular charge Cook-off Firing condition

Linearizing the soft finger contact constraint with application to dynamic force distribution in multifingered grasping

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Science China(Technological Sciences) 2005年第2期48卷 121-130页

作者： ZHENG yu qian Wenhan Robotics Institute Shanghai Jiao Tong University Shanghai 200030 China Robotics Institute Shanghai Jiao Tong University Shanghai 200030 China

Currently, most efficient algorithms for force-closure analysis and dynamic force distribution utilize linear programming, but friction models are nonlinear. Substituting polyhedral cones for circular cones of Coulomb friction realizes the linearization of the frictional point contact constraint. So far, however, there is no approach to soft finger contact. This paper present such an approach. Then the foregoing algorithms can be extended to grasping with soft finger contact. Herein an optimal force distribution algorithm for soft multifingered grasps is developed with an illustrative example.

关键词： multifingered grasping, soft finger contact, linearization, force-closure, dynamic force distribution (DFD).

Correlating learning and memory improvements to long-term potentiation in patients with brain injury

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Neural Regeneration Research 2008年第2期3卷 172-176页

作者： Xingfu Peng qian yu Department of Rehabilitation Medicine Affiliated Hospital of Luzhou Medical College Luzhou 646000 Sichuan Province China

BACKGROUND： Brain injury patients often exhibit learning and memory functional deficits. Long-term potentiation （LTP） is a representative index for studying learning and memory cellular models; the LTP index correlates to neural plasticity. OBJECTIVE： This study was designed to investigate correlations of learning and memory functions to LTP in brain injury patients, and to summarize the research advancements in mechanisms underlying brain functional improvements after rehabilitation intervention. RETRIEVAL STRATEGY： Using the terms ＂brain injuries, rehabilitation, learning and memory, long-term potentiation＂, manuscripts that were published from 2000-2007 were retrieved from the PubMed database. At the same time, manuscripts published from 2000-2007 were also retrieved from the Database of Chinese Scientific and Technical Periodicals with the same terms in the Chinese language. A total of 64 manuscripts were obtained and primarily screened. Inclusion criteria： studies on learning and memory, as well as LTP in brain injury patients, and studies focused on the effects of rehabilitation intervention on the two indices; studies that were recently published or in high-impact journals. Exclusion criteria： repetitive studies. LITERATURE EVALUATION： The included manuscripts primarily focused on correlations between learning and memory and LTP, the effects of brain injury on learning and memory, as well as LTP, and the effects of rehabilitation intervention on learning and memory after brain injury. The included 39 manuscripts were clinical, basic experimental, or review studies. DATA SYNTHESIS： Learning and memory closely correlates to LTP. The neurobiological basis of learning and memory is central nervous system plasticity, which involves neural networks, neural circuits, and synaptic connections, in particular, synaptic plasticity. LTP is considered to be an ideal model for studying synaptic plasticity, and it is also a classic model for studying neural plasticity

关键词： learning and memory brain injury long-term potentiation rehabilitation

Correlation between synaptic plasticity, associated proteins, and rehabilitation training in a rat model of cerebral infarction

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Neural Regeneration Research 2008年第6期3卷 670-673页

作者： Dan Yang qian yu Department of Rehabilitation Medicine Affiliated Hospital of Luzhou Medical College Luzhou 646000 Sichuan Province China

All motions provide sensory, motoric, and reflexive input to the central nervous system, as well as playing an important role in cerebral functional plasticity and compensation. Cerebral plasticity has become the theoretical basis of neurorehabilitation. Studies of cerebrovascular disease, in particular, demonstrate that regeneration is accompanied by multiple forms of plasticity, such as functional and structural, in different phases of stroke rehabilitation. This study was designed to measure synaptic plasticity and expression of associated proteins to analyze the effect of rehabilitation training on learning and memory in a rat model of cerebral infarction. Results suggest that rehabilitation training increases expression of nerve growth factor associated protein 43, brain-derived neurotrophic factor, and neural cell adhesion molecules, and also promotes cerebral functional plasticity.

关键词： cerebral infarction rehabilitation training synaptic plasticity associated protein rats

Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex promotes intestinal development as a new iron supplement

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Science China Life Sciences 2025年第1期 219-231页

作者： Yingying Feng yuying Wu Jialu Wang Zhenglin Dong qian yu Shuangshuang Xia Chunxue Liu Haihua Wang Xin Wu Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of Sciences ANYOU Biotechnology Group Co.Ltd Qingdao Seawin Biotech Group Co. LTD

Iron is a crucial micronutrient, and its deficiency can have detrimental effects on the health of infants. Dietary polysaccharide-iron(Ⅲ) complexes(PICs) are promising for addressing iron deficiency due to their minimal adverse reactions and high iron absorption rate. This study aimed to investigate the effects of dietary Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex(EP-Fe) on newborns, using 3-day weaned piglets as the iron-deficiency model. Results showed that EP-Fe improved iron levels and promoted intestinal development in piglets. Transcriptome sequencing revealed that EP-Fe increased the survival of intestinal epithelial cells under hypoxia by upregulating the expression of genes that promote the development of the vascular system. Additionally, EP-Fe enhanced the mucosal barrier functions by inhibiting myosin light chain kinase(MLCK)/phosphorylated myosin light chain(p-MLC) signaling pathway to increase the expression of intestinal tight junction proteins. Furthermore, the 16S r RNA gene sequencing of gut microbiota showed that EP-Fe promoted the enrichment of Bacteroides＿fragilis and other gut microbes that can metabolize carbohydrates. In conclusion, EP-Fe is an effective iron supplement for newborns, and it can be developed as a comprehensive nutritional supplement.

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Optical recording of brain functions based on voltage-sensitive dyes

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Chinese Chemical Letters 2021年第6期32卷 1879-1887页

作者： qian yu Xing Wang Liming Nie State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis&Center for Molecular Imaging and Translational Medicine School of Public HealthXiamen UniversityXiamen 361102China

To better understand the spatial distribution of brain functions,we need to monitor and analyze neuronal *** technique has provided an important method for the exploration of some neural ***,this method cannot simultaneously detect the activities of nerve cell ***,methods that can monitor the spatial distribution of neuronal population activity are demanded to explore brain ***-sensitive dyes(VSDs)shift their absorption or emission optical signals in response to different membrane potentials,allowing assessing the global electrical state of *** recording technique coupled with VSDs is a promising method to monitor the brain functions by detecting optical signal *** review focuses on the fast and slow responses of VSDs to membrane potential changes and optical recordings utilized in the central nervous *** this review,we attempt to show how VSDs and optical recordings can be used to obtain brain functional monitoring at high spatial and temporal *** of brain functions will not only greatly improve the cognition of information transmission of complex neural network,but also provide new methods of treating brain diseases such as Parkinson’s and Alzheimer’s diseases.

关键词： Voltage-sensitive dyes Cyanine dyes Membrane potential Brain function Photoacoustic imaging

Modeling of Hot Deformation Behavior of55SiMnMo Medium-Carbon Steel

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Journal of Iron and Steel Research International 2013年第11期20卷 125-130页

作者： YAN Tao yu En-lin ZHAO yu-qian National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan University College of Mechanical Engineering Yanshan University Control Engineering College Northeast University at Qinhuangdao

The hot deformation behavior of 55SiMnMo steel was studied by hot isothermal compression tests at 950- 1 100 ℃ and strain rates of 0.01 -10 s ^-1 using a Gleeble 3500 thermal simulation machine. Experimental results show that the peak stress increases with decreasing deformation temperature and increasing strain rate. When the strain rate ε= 0.01 s^- 1 , or when ε =0.1 s^- 1 and the deformation temperature T≥1000 ℃, the dynamic recrystalli- zation （DRX） of 55SiMnMo steel occurs. The hot flow stress constitutive equation, peak strain equation, as well as critical stress and strain for DRX initiation are obtained based on the experimental data. A comparison between the theoretical and experimental results verifies the reliability of the flow stress equation.

关键词： dynamic recrystallization constitutive equation work hardening activation energy