检索结果-南通市图书馆

Current Medical Science 2020年第3期40卷 523-529页

作者： Si-jie yuan jie SHEN Department of Endocrinology and Metabolic Diseases The Third Affiliated HospitalSouthern Medical UniversityGuangzhou510630China

The association between glucose variability(GV)and adverse perioperative outcomes in type 2 diabetes mellitus(T2DM)patients undergoing orthopedic surgery was investigated.A retrospective cohort study was performed by analyzing data on T2DM patients receiving continuous blood glucose(BG)monitoring and continuous subcutaneous insulin infusion treatment due to poorly controlled preoperative BG prior to orthopedic *** was assessed with coefficient of variation(CV).Postoperative and perioperative CV,hypoglycemia cases,and other perioperative outcomes(diabetes preparation time[DPT],length of stay[LOS],and perioperative and infective complication cases)were *** showed that a total of 168 patients were grouped into preoperative CV tertiles:1st(n=56):0–0.2921,2nd(n=58):0.2922–0.3779,and 3rd(n=54):0.3780–*** blood glucose(FBG),perioperative CV,rate of hypoglycemia cases(OR:5.53,95%CI:2.43–12.59)(all P<0.001)and DPT(P=0.024)were higher in the 3rd than in the 1st *** adjustments of covariates,regression analysis indicated that the 3rd tertile was associated with increased perioperative CV(adjusted coefficient=0.515,P<0.001),DPT(adjusted coefficient=0.169,P=0.073),rate of hypoglycemia cases(OR:6.72,95%CI:2.69−16.82,P<0.001)and perioperative complication cases(OR:2.50,95%CI:0.90−7.01,P=0.080).In conclusion,preoperative GV is associated with increased perioperative GV and adverse perioperative outcomes including longer DPT and higher rates of hypoglycemia and perioperative complications.

关键词： glycemic variability orthopedics perioperative period type 2 diabetes mellitus

Location aided probabilistic broadcast algorithm for mobile Ad-hoc network routing

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2017年第2期24卷 66-71页

作者： Bai yuan An jie Zhang Huibing School of Electrical and Electronic Engineering Tianjin University of Technology Guangxi Key Laboratory of Trusted Software Guilin University of Electronic Technology

On-demand routing protocols are widely used in mobile Ad-hoc network （MANET）. Flooding is an important dissemination scheme in routing discovering of on-demand routing protocol. However, in high-density MANET redundancy flooding packets lead to dramatic deterioration of the performance which calls broadcast storm problem （BSP）. A location-aided probabilistic broadcast （LAPB） algorithm for routing in MANET is proposed to reduce the number of routing packets produced by flooding in this paper. In order to reduce the redundancy packets, only nodes in a specific area have the probability, computed by location information and neighbor knowledge, to propagate the routing packets. Simulation results demonstrate that the LAPB algorithm can reduce the packets and discovery delay （DD） in the routing discovery phase.

关键词： mobile Ad-hoc network route protocol broadcast storm problem probabilistic broadcast

Nonlinear dynamical systems and bistability in linearly forced isotropic turbulence

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2013年第6期29卷 823-826页

作者： Zheng Ran Xing-jie yuan Shanghai Institute of Applied Mathematics and Mechanics Shanghai University

In this paper, we present an extensive study of the linearly forced isotropic turbulence. By using analytical method, we identify two parametric choices, of which they seem to be new as far as our knowledge goes. We prove that the underlying nonlinear dynamical system for linearly forced isotropic turbulence is the general case of a cubic Lienard equation with linear damping. We also discuss a FokkerPlanck approach to this new dynamical system, which is bistable and exhibits two asymmetric and asymptotically stable stationary probability densities.

关键词： Isotropic turbulence Nonlinear dynamical system Karman-Howarth equation

Intrinsic transverse relaxation mechanisms of polarized alkali atoms enclosed in radio-frequency magnetometer cell

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第9期28卷 385-390页

作者： Yang-Ying Fu jie yuan College of Advanced Interdisciplinary Studies National University of Defense Technology

The intrinsic transverse relaxation mechanisms of polarized alkali atoms enclosed in the radio-frequency magnetometer cell are *** intrinsic transverse relaxation rate of cesium atoms as a function of cell temperature is *** absorption of alkali atoms by the glass wall and the reservoir effect are the main error factors which contribute to the disagreements between theory and experiments.A modified relaxation model is presented, in which both the absorption of alkali atoms by the glass wall and the reservoir effect are *** study provides a more accurate description of the intrinsic transverse relaxation mechanisms of polarized alkali atoms, and enlightens the optimization of the cell design.

关键词： intrinsic transverse relaxation modified relaxation model absorption of alkali atoms reservoir effect

Low-Frequency Magnetic Stimulation of Shenmen Acupoint Reduces Blood Oxygen Levels in the Prefrontal Cortex of Healthy Subjects:A Near-Infrared Brain Functional Imaging Study

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2021年第8期27卷 585-588页

作者： yuan jie ZHENG Zhong CAO Yue CHEN jie LI yuan-yuan LEI Ya-ling School of Basic Medical Sciences Chengdu University of Traditional Chinese MedicineChengdu611130China Department of Encephalopathy Shaanxi Provincial Hospital of Traditional Chinese MedicineXi’an710003China Neurobiologic Testing Center Sichuan University West China HospitalChengdu610044China College of Acupuncture and Massage Chengdu University of Traditional Chinese MedicineChengdu611130China Department of Ophthalmology Xi’an Hospital of Traditional Chinese MedicineXi’an710003China

Objective To explore the effect of low-frequency magnetic stimulation at Shenmen(HT 7)acupoint on blood oxygen levels in the prefrontal cortex of healthy *** Functional near-infrared spectroscopy(fNIRS)technology was used to collect real-time data of oxygenated hemoglobin(oxy-Hb)in the prefrontal cortex of 16 healthy subjects at resting state and low-frequency magnetic stimulation of *** mean and integral values of blood oxygen concentration were *** Compared with the resting state,the mean and integral values of blood oxygen concentration were decreased during the task period,recovery period,and the whole process in the magnetic stimulation of Shenmen acupoint(P<0.05).In particular,the difference was statistically significant in the recovery period(P<0.01).Conclusions The prefrontal cortex was widely activated and produced an immediate effect by reducing the local blood oxygen concentration at low-frequency magnetic stimulation of Shenmen acupoint,which verifies the sedative effect of Shenmen acupoint.

关键词： Shenmen acupoint transcranial magnetic stimulation functional near-infrared spectroscopy prefrontal lobe healthy subjects

Exploring Artistic Embeddings in Service Design:A Keyword-Driven Approach for Artwork Search and Recommendations

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2024年第5期29卷 1580-1592页

作者： jie yuan Fangru Lin Hae Yoon Kim College of Design Dongseo UniversityBusan 47011Republic of Korea Shandong Provincial University Laboratory for Protected Horticulture College of ArtsWeifang University of Science and TechnologyWeifang 262700China

As living standards improve,the demand for artworks has been escalating,transcending beyond the realm of mere basic human ***,amidst an extensive array of artwork choices,users often struggle to swiftly and accurately identify their preferred *** such scenarios,a recommendation system can be invaluable,assisting users in promptly pinpointing the desired artworks for better service *** the escalating demand for artwork recommendation systems,current research fails to adequately meet these ***,existing artwork recommendation methodologies tend to disregard users’implicit interests,thereby overestimating their capability to articulate their preferences in full and often neglecting the nuances of their diverse *** response to these challenges,we have developed a weighted artwork correlation graph and put forth an embedding-based keyword-driven artwork search and recommendation *** approach transforms the keywords that delineate user interests into word embedding *** allows for an effective distinction between the user’s core and peripheral ***,we employ a dynamic programming algorithm to extract artworks from the correlation graph,thereby obtaining artworks that align with the user’s explicit keywords and implicit *** have conducted an array of experiments using real-world datasets to validate our *** results attest to the superiority of our method in terms of its efficacy in searching and recommending artworks.

关键词： artwork self-attention recommendation dynamic programming implicit interest

Numerical estimation of the piecewise constant Robin coefficient by identifying its discontinuous points

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2015年第1期30卷 1-16页

作者： CHENG Xiao-liang YU yuan-jie Department of Mathematics Zhejiang University

We propose a new numerical method for estimating the piecewise constant Robin coefficient in two-dimensional elliptic equation from boundary measurements. The Robin in- verse problem is recast into a minimization of an output least-square formulation. A technique based on determining the discontinuous points of the unknown coefficient is suggested, and we investigate the differentiability of the solution and the objective functional with respect to the discontinuous points. Then we apply the Gauss-Newton method for reconstructing the shape of the unknown Robin coefficient. Numerical examples illustrate its efficiency and stability.

关键词： Inverse problem Robin coefficient differentiability the Gauss-Newton method.

Synthesis and Determination of Absolute Configuration of a Divergent Polyhydroxy Enyne Compound

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2005年第12期16卷 1569-1572页

作者： Zhi jie XUE yuan Chao LI Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203

Polyhydroxy enyne compound （＋）-（1＇S, 2R, 3S, 5S, 6S）-5,6-dimethoxy-5, 6-dimethyl- 2-（1＇-hydroxylpropyl-2-ne）-3-vinyl-l,4-dioxane has been synthesized from D-（-）-tartaric acid. A new chiral center was established by nucleophilic addition with 87% de. The modified Mosher＇s method was employed to confirm the absolute configuration of 17, which assigned the S-configuration at the new chiral center.

关键词： Tartaric acid enyne compound nucleophilic addition modified Mosher's method

DELAYED FLOWERING, an Arabidopsis Gene That Acts in the Autonomous Flowering Promotion Pathway and Is Required for Normal Development

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2006年第1期48卷 27-34页

作者： Ming-jie Chen Zheng yuan Hai Huang Key Laboratory of Molecular Genetics Shanghai Institute of Plant Physiology and Ecology Graduate School of the Chinese Academy of Sciences Shanghai 200032 China

The control of flowering time in higher plants is one of the most important physiological processes and is critical for their reproductive success. To investigate the mechanisms controlling flowering time, we screened for Arabidopsis mutants with late-flowering phenotypes. One mutant, designated delayed flowering （dfr） in the Landsberg erecta （Ler） ecotype, was identified with delayed flowering time. Genetic analysis revealed that dfr is a single gene recessive nuclear mutant and the mutation was mapped to a locus tightly linked to UFO on chromosome 1. To our knowledge, no gene regulating flowering time has been reported yet in this region. The dfrmutant plant showed a delayed flowering time under the different growth conditions examined, including long- and short-day photoperiods and gibberellic acid GA3 treatments, suggesting that DFR is a gene involved in the autonomous flowering promotion pathway. The Arabidopsis gene FLOWERING LOCUS C （FLC） plays a central role in repressing flowering and its transcripts are undetectable in wild-type Ler. However, FLCexpression was upregulated in the dfrmutant, suggesting that DFR is a negative regulator of FLC. In addition, the dfr mutant plant displayed altered valve shapes of the silique and the number of trichomes and branches of each trichome were both reduced, indicating that the DRFgene is also required for normal plant development. Moreover, dfr leafy-5 （Ify-5） double mutant plants showed a much later flowering time than either dfr or Ify-5 single mutants, indicating that DFR and LFY act synergistically to promote flowering in Arabidopsis.

关键词： Arabidopsis autonomous pathway dfr, flowering time trichome.

Automatic interval management for aircraft based on dynamic fuzzy speed control considering uncertainty

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2023年第11期36卷 354-372页

作者： jie yuan Yang PEI Yan XU Xiaochen LI Yuxue GE School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China School of Aerospace Transport and ManufacturingCranfield UniversityCranfield MK430ALUnited Kingdom

A novel real-time autonomous Interval Management System(IMS)is proposed to automate interval management,which considers the effect of wind uncertainty using the Dynamic Fuzzy Velocity Decision(DFVD)*** membership function can be generated dynamically based on the True Air Speed(TAS)limitation changes in real time and the interval criterion of the adjacent aircraft,and combined with human cognition to formulate fuzzy rules for speed adjusting *** groups of experiments were conducted during the en-route descent stage to validate the proposed IMS and DFVD performances,and to analyze the impact factors of the *** verification experimental results show that compared with actual flight status data under controllers’command,the IMS reduces the descent time by approaching 30%with favorable wind uncertainty suppression *** analysis shows that the ability improvement of DFVD is mainly affected by the boundary value of the membership ***,the dynamic generation of the velocity membership function has greater advantages than the static method in terms of safety and *** the analysis of influencing factors,we found that the interval criterion and aircraft category have no significant effect on the capability of *** a higher initial altitude scenario,the initial interval should be appropriately increased to enhance safety and efficiency during the descent *** prototype system could evolve into a realtime Flight-deck Interval Management(FIM)tool in the future.

关键词： Air traffic control Air transportation Fuzzy logic Safety interval Wind uncertainty