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Multi-output Gaussian Process Regression Model with Combined Kernel Function for Polyester Esterification Processes
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作者 王恒骞 耿君先 陈磊 《Journal of Donghua University(English Edition)》 CAS 2023年第1期27-33,共7页
In polyester fiber industrial processes,the prediction of key performance indicators is vital for product quality.The esterification process is an indispensable step in the polyester polymerization process.It has the ... In polyester fiber industrial processes,the prediction of key performance indicators is vital for product quality.The esterification process is an indispensable step in the polyester polymerization process.It has the characteristics of strong coupling,nonlinearity and complex mechanism.To solve these problems,we put forward a multi-output Gaussian process regression(MGPR)model based on the combined kernel function for the polyester esterification process.Since the seasonal and trend decomposition using loess(STL)can extract the periodic and trend characteristics of time series,a combined kernel function based on the STL and the kernel function analysis is constructed for the MGPR.The effectiveness of the proposed model is verified by the actual polyester esterification process data collected from fiber production. 展开更多
关键词 seasonal and trend decomposition using loess(STL) multi-output Gaussian process regression combined kernel function polyester esterification process
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Function Combined Method for Design Innovation of Children's Bike 被引量:4
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作者 WU Xiaoli QIU Tingting CHEN Huijuan 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2013年第2期242-247,共6页
As children mature, bike products for children in the market develop at the same time, and the conditions are frequently updated. Certain problems occur when using a bike, such as cycle overlapping, repeating function... As children mature, bike products for children in the market develop at the same time, and the conditions are frequently updated. Certain problems occur when using a bike, such as cycle overlapping, repeating function, and short life cycle, which go against the principles of energy conservation and the environmental protection intensive design concept. In this paper, a rational multi-function method of design through functional superposition, transformation, and technical implementation is proposed. An organic combination of frog-style scooter and children’s tricycle is developed using the multi-function method. From the ergonomic perspective, the paper elaborates on the body size of children aged 5 to 12 and effectively extracts data for a multi-function children’s bike, which can be used for gliding and riding. By inverting the body, parts can be interchanged between the handles and the pedals of the bike. Finally, the paper provides a detailed analysis of the components and structural design, body material, and processing technology of the bike. The study of Industrial Product Innovation Design provides an effective design method to solve the bicycle problems, extends the function problems, improves the product market situation, and enhances the energy saving feature while implementing intensive product development effectively at the same time. 展开更多
关键词 children’s bike function combined method ERGONOMICS function transformed
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Correlation Combination Ambiguity Removing Technology for Acquisition of Sine-Phased BOC(kn,n) Signals 被引量:3
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作者 LIU Wen XI Yue +2 位作者 DENG Zhongliang JIAO Jichao YIN Lu 《China Communications》 SCIE CSCD 2015年第4期86-96,共11页
Binary Offset Carrier(BOC) has been chosen as one of modulation methods in the future Global Navigation Satellite Systems(GNSS). Even though BOC signals can bring several advantages such as better track performance an... Binary Offset Carrier(BOC) has been chosen as one of modulation methods in the future Global Navigation Satellite Systems(GNSS). Even though BOC signals can bring several advantages such as better track performance and higher positioning accuracy, there is a drawback that the autocorrelation functions have multiple side-peaks if BOC modulation is adopted. This characteristic will lead to false acquisition and the tracking loop will be locked in false phase point. The proposed Correlation Combination Ambiguity Removing Technology(CCART) cancelled all the side-peaks of the sine-phased BOC(kn,n) signals completely by making use of two kinds of correlation functions. Two kinds of sub-correlation functions were combined separately and then final correlation function without side-peaks was acquired. The simulation results are given and compared with other techniques. It is shown that acquisition will not be degraded with the increase of k. 展开更多
关键词 GNSS unambiguous acquisition sine-phased BOC(kn n) combination ofcorrelation functions
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Recovery function of light quantum autohemo-oxygen therapy combined with decoction of activating blood circulation on stroke patients
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作者 张银清 刘卫平 《中国组织工程研究与临床康复》 CAS CSCD 2001年第19期149-,共1页
关键词 Recovery function of light quantum autohemo-oxygen therapy combined with decoction of activating blood circulation on stroke patients
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How territorial function determines CO_(2) emissions in China: An approach of spatial dimension
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作者 FAN Jie WANG Zheng +6 位作者 ZHOU Daojing GUO Rui CHEN Dong LIU Baoyin LIU Hanchu QIAO Qin WU Jianxiong 《Journal of Geographical Sciences》 SCIE CSCD 2024年第9期1677-1696,共20页
Regional CO_(2) emissions are closely related to their territorial function, which is the major role a region plays in sustainable processes on the earth's surface. Given that China is implementing a top-down emis... Regional CO_(2) emissions are closely related to their territorial function, which is the major role a region plays in sustainable processes on the earth's surface. Given that China is implementing a top-down emission allocation quota strategy, studying the impact of a territorial function on emissions addresses the research gap from a spatial integration dimension.By investigating the effects of three basic functional territories(urbanization zones(UZ), food security zones(FSZ), and ecological security zones(ESZ)), horizontal spatial structure and vertical combinations of functional territories on CO_(2) emission patterns in China, we found that functional territory patterns were highly coupled with the spatial distribution of CO_(2) emissions, with a ratio of CO_(2) emissions from UZ–FSZ–ESZ was stable at around 5:2:1 from 2000 to 2017. Spatially, CO_(2) emissions in FSZ and ESZ were 1.06–2.12 times higher than the average value within 200 km from the UZ. As territorial function combination increased with spatial upscaling, the emission characteristics attributable to functional territories became indistinct. The findings above can provide a basis for the long-term prediction of CO_(2) emissions from spatial dimension, support scientific guidance for inter-zone cooperation and classified management of carbon emissions with the major function oriented zones as impetus. 展开更多
关键词 CO_(2)emission pattern functional territory spatial structure function combination spatial dimension-based analysis
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Effects of lornoxicam combining with fentanyl on postoperative arrhythmia and platelet function in patients with coronary artery disease after abdominal surgery
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作者 王军 《外科研究与新技术》 2005年第3期160-160,共1页
To investigate the effects of patient-controlled intravenous analgesia (PCIA) with lornoxicam and fentanyl on arrhythmia and the expression of platelet membrane glycoproteins in patients with coronary artery disease (... To investigate the effects of patient-controlled intravenous analgesia (PCIA) with lornoxicam and fentanyl on arrhythmia and the expression of platelet membrane glycoproteins in patients with coronary artery disease (CAD) after abdominal surgery.Methods Eighty ASA Ⅱ or Ⅲ patients with CAD aged 51~66 yrs weighing 59~68 kg presenting for abdominal surgery participated in this study.CAD was diagnosed by clinical symptoms and ischemic changes on ECG.The patients were premedicated with intramuscular henobarbital 0.1 g and scopolamine 0.3 mg.Anesthesia was induced with fentanyl,droperidol,propofol and vecuronium and maintained with propofol,fentanyl and vecuronium.The patients received PCIA after operation.The PCIA solution contained fentanyl 0.9 mg and droperidol 5 mg in 100 ml of normal saline (N.S.) in group A (n=40) or lornoxicam 56 mg,fentanyl 0.2 mg and droperidol 5 mg in 100 ml N.S. in group B (n=40).In group A the loading dose was fentanyl 0.05 mg and group B lornoxicam 4 mg.PCIA included a background infusion at 2 ml·h -1 and a bolus of 0.5 ml with a 15 min lock-out.VAS(0=no pain,10= worst pain) was used to measure pain intensity.In addition to BP,HR and SpO2 monitoring ECG was continuously monitored with a Holter monitor after operation.Blood samples were taken from peripheral vein before and 6 h after operation and on the 1st,2nd,7th and 8th postoperative days for determination of the expression of CD 62p ,CD 63 and CD 41 /CD 61 on the platelet membrane,platelet count,prothrombin time (PT) thrombin time (TT) and partial thromboplastin time (PTT).Results The two groups were comparable with respect to sex,age,body weight,severity of CAD,duration of operation and intraoperative blood loss.The patients received no blood transfusion during operation.There was no significant difference in VAS score,platelet count,PT,TT and PTT between the two groups.The incidence of atrial and ventricular premature beat on ECG and the expression of CD 41 /CD 61 ,CD 62p and CD 63 on the platelet membrane were significantly lower in group B than in group A on the 7th and 8th postoperative days(P<0.05 or 0.01).Conclusion Postoperative PCIA with lornoxicam and fentanyl can more effectively reduce the incidence of postoperative arrhythmia in patients with CAD.Suppression of activation of platelets by lornoxicam may contribute to the mechanism.10 refs,3 tabs. 展开更多
关键词 Effects of lornoxicam combining with fentanyl on postoperative arrhythmia and platelet function in patients with coronary artery disease after abdominal surgery
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A comparative study of pancreatic endocrine function and related metabolism after long-term survival between the patients with combined kidneypancreas transplantation vs those with combined en bloc ' liver-pancreas transplantation
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作者 朱晓峰 《外科研究与新技术》 2011年第4期292-292,共1页
Objective To compare the effects of combined en bloc liver - pancreas transplantation ( LPT) with portal vein drainage and simultaneous combined kidney - pancreas transplantation ( KPT) with systemic venous drainage o... Objective To compare the effects of combined en bloc liver - pancreas transplantation ( LPT) with portal vein drainage and simultaneous combined kidney - pancreas transplantation ( KPT) with systemic venous drainage on the pancreatic endocrine function and related me- 展开更多
关键词 LPT A comparative study of pancreatic endocrine function and related metabolism after long-term survival between the patients with combined kidneypancreas transplantation vs those with combined en bloc liver-pancreas transplantation KPT
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D^(*) jet fragmentation function paradox and combination mechanism
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作者 Chuanhui Jiang Honglei Li +2 位作者 Shi-Yuan Li Shufen Liu Xinyue Yin 《Communications in Theoretical Physics》 SCIE CAS CSCD 2023年第2期80-88,共9页
In the framework of the perturbative Quantum Chromodynamics factorization,the production of a hadron includes contributions from fragmentation as well as combination,with the latter being of higher twist.In particular... In the framework of the perturbative Quantum Chromodynamics factorization,the production of a hadron includes contributions from fragmentation as well as combination,with the latter being of higher twist.In particular,the heavy meson production can be via the combination of a heavy quark with a light one,and the cross section can be factorized to be the convolution of the combination matrix element,the light quark distribution function,and the hard partonic sub-cross section of the heavy quark production.The partonic distribution and the combination matrix element are functions of a scaling variable,respectively,which is the momentum fraction of the corresponding quark with respect to the heavy meson.We studied the D^(*±)production in jet via combination in pp collision at the LHC.The total result is comparable with the experimental data.The combination matrix elements can be further studied in various hadron production processes. 展开更多
关键词 D^(*)-jet fragmentation function combination mechanism
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Image encryption technique based on new two-dimensional fractional-order discrete chaotic map and Menezes–Vanstone elliptic curve cryptosystem 被引量:1
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作者 Zeyu Liu Tiecheng Xia Jinbo Wang 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第3期161-176,共16页
We propose a new fractional two-dimensional triangle function combination discrete chaotic map(2D-TFCDM)with the discrete fractional difference.Moreover,the chaos behaviors of the proposed map are observed and the bif... We propose a new fractional two-dimensional triangle function combination discrete chaotic map(2D-TFCDM)with the discrete fractional difference.Moreover,the chaos behaviors of the proposed map are observed and the bifurcation diagrams,the largest Lyapunov exponent plot,and the phase portraits are derived,respectively.Finally,with the secret keys generated by Menezes-Vanstone elliptic curve cryptosystem,we apply the discrete fractional map into color image encryption.After that,the image encryption algorithm is analyzed in four aspects and the result indicates that the proposed algorithm is more superior than the other algorithms. 展开更多
关键词 CHAOS fractional two-dimensional triangle function combination discrete chaotic map image encryption Menezes-Vanstone elliptic curve cryptosystem
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Impacts of methamidophos,copper,and their combinations on bacterial community structure and function in black soil
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作者 ZHANG Huiwen ZHOU Qixing +1 位作者 ZHANG Qianru ZHANG Chenggang 《Science China(Life Sciences)》 SCIE CAS 2005年第z1期14-25,共12页
The potential ecotoxicologial risks of methamidophos,copper,and their combinations on microbial community of black soil ecosystem in the Northeast China were assessed in species richness and structures by using 16S rD... The potential ecotoxicologial risks of methamidophos,copper,and their combinations on microbial community of black soil ecosystem in the Northeast China were assessed in species richness and structures by using 16S rDNA-PCR-DGGE analysis approach,and functional characteristics at community levels by using BIOLOG^(GN) system analysis method as well as two conventional methods(DHA and SIR).All results of DGGE banding fingerprint patterns(amplified by bacterial specific 16S rDNA V_(3) high variable region universal primer)indicated that the species richness of bacterial community in tested soil was significantly decreased to different extents by using different concentrations of single methamidophos,copper,especially some of their combinations had worse effects than their corresponding single factors.In addition,the structures of soil bacterial community had been disturbed under all stresses applied in this study because of the enrichment of some species and the disappearance of other species from the bacterial community.The effects of the single factors with lower concentrations on the communiy structure were weaker than those with higher concentrations.Moreover,the bacterial community structures under the combined stresses of methamidophos and copper were significantly different from those of control and their corresponding single factors.The change of DHA and carbon source substrate utilizing fingerprint patterns based on BIOLOG^(GN)system were two relatively sensitive directors corresponding to the stress presented in this study.Between methamodophos and copper,there happened the significant joint-toxic actions when they were used in combination on DHA and carbon source substrate utilizing fingerprint patterns of soil bacterial communities.The DHA of soil under the combined stresses was lower than that of the control and that under the single factors,and the BIOLOG^(GN) substrate utilizing patterns of soil treated by combinations were distinctively differentiated from the control and their corresponding single factors.From all of above,the methamidophos,copper,especially their combinations had the clearly potential ecotoxicological risks to influence the natural soil microbial ecological system by changing the structure,richness,and the functional characteristics of microbial community. 展开更多
关键词 and their combinations on bacterial community structure and function in black soil Impacts of methamidophos COPPER
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APPROXIMATE SOLUTIONS FOR TRANSIENT RESPONSE OF CONSTRAINED DAMPING LAMINATED CANTILEVER PLATE
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作者 Liuwei Mao Anwen Wang Mingyong Hu (College of Science, Naval University of Engineering, Wuhan 430033, China) 《Acta Mechanica Solida Sinica》 SCIE EI 2010年第4期312-323,共12页
The series composed by beam mode function is used to approximate the displacement function of constrained damping of laminated cantilever plates, and the transverse deformation of the plate on which a concentrated for... The series composed by beam mode function is used to approximate the displacement function of constrained damping of laminated cantilever plates, and the transverse deformation of the plate on which a concentrated force is acted is calculated using the principle of virtual work.By solving Lagrange's equation, the frequencies and model loss factors of free vibration of the plate are obtained, then the transient response of constrained damping of laminated cantilever plate is obtained, when the concentrated force is withdrawn suddenly.The theoretical calculations are compared with the experimental data, the results show:both the frequencies and the response time of theoretical calculation and its variational law with the parameters of the damping layer are identical with experimental results.Also, the response time of steel cantilever plate, unconstrained damping cantilever plate and constrained damping cantilever plate are brought into comparison, which shows that the constrained damping structure can effectively suppress the vibration. 展开更多
关键词 constrained damping cantilever plate damping laminated plate transient response beam mode function combination
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The magnet design for the HLS storage ring upgrade project 被引量:2
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作者 张浩 李为民 +4 位作者 冯光耀 王琳 张善才 李为 梁军军 《Chinese Physics C》 SCIE CAS CSCD 2012年第1期91-95,共5页
In order to improve the performance of the Hefei Light Source (HLS),in particular to get higher brilliance synchrotron radiation and increase the number of straight section insertion devices,an upgrade project calle... In order to improve the performance of the Hefei Light Source (HLS),in particular to get higher brilliance synchrotron radiation and increase the number of straight section insertion devices,an upgrade project called HLSII will be launched soon.The storage ring lattice,which has a double bend achromatic structure with four periods,comprises eight dipoles,32 quadrupoles and 32 combined function sextupoles.The design and analysis of the magnets are shown in this paper,along with the optimization of the multipurpose combined function magnet,which consists of three magnets:skew quadrupole,horizontal dipole and vertical dipole,with the main sextupole magnet.This type of magnet is the first one that has been designed and used in China.The mechanical design and fabrication procedures for the magnets are also presented. 展开更多
关键词 storage ring magnet combined function conformal mapping water-cooling channel
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New Exact Solutions of Time Fractional Gardner Equation by Using New Version of F-Expansion Method 被引量:10
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作者 Yusuf Pandir Hasan Huseyin Duzgun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第1期9-14,共6页
In this article, we consider analytical solutions of the time fractional derivative Gardner equation by using the new version of F-expansion method. With this proposed method multiple Jacobi elliptic functions are sit... In this article, we consider analytical solutions of the time fractional derivative Gardner equation by using the new version of F-expansion method. With this proposed method multiple Jacobi elliptic functions are situated in the solution function. As a result, various exact analytical solutions consisting of single and combined Jacobi elliptic functions solutions are obtained. 展开更多
关键词 new version of F-expansion method nonlinear differential equations with fractional derivatives single and combined Jacobi elliptic functions solutions
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Numerical Simulation of Atmosphere-Ocean-Sea Ice Interaction During Interannual Cycle in High Northern Latitudes 被引量:3
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作者 刘喜迎 刘海龙 +3 位作者 李薇 张学洪 宇如聪 俞永强 《Acta meteorologica Sinica》 SCIE 2008年第1期119-128,共10页
The interannual atmosphere-ocean-sea ice interaction (AOSI) in high northern latitudes is studied with a global atmosphere-ocean-sea ice coupled model system, in which the model components of atmosphere and land sur... The interannual atmosphere-ocean-sea ice interaction (AOSI) in high northern latitudes is studied with a global atmosphere-ocean-sea ice coupled model system, in which the model components of atmosphere and land surface are from China National Climate Center and that of ocean and sea ice are from LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences. A daily flux anomaly correction scheme is employed to couple the atmosphere model and the ocean model with the effect of inhomogenity of sea ice in high latitudes is considered. The coupled model system has been run for 50 yr and the results of the last 30 years are analyzed. After the sea level pressure (SLP), surface air temperature (SAT), sea surface temperature (SST), sea ice concentration (SIC), and sea surface sensible heat flux (SHF) are filtered with a digital filter firstly, their normalized anomalies are used to perform the decomposition of combined complex empirical orthogonal function (CCEOF) and then they are reconstructed with the leading mode. The atmosphere-ocean-sea ice interactions in high northern latitudes during a periodical cycle (approximately 4 yr) are analyzed. It is shown that: (1) When the North Atlantic Oscillation (NAO) is in its positive phase, the southerly anomaly appears in the Greenland Sea, SAT increases, the sea loses less SHF, SST increases and SIC decreases accordingly; when the NAO is in its negative phase, the northerly anomaly appears in the Greenland Sea, SAT decreases, the sea loses more SHF, SST decreases and SIC increases accordingly. There are similar features in the Barents Sea, but the phase of evolution in the Barents Sea is different from that in the Greenland Sea. (2) For an average of multi-years, there is a cold center in the inner part of the Arctic Ocean near the North Pole. When there is an anomaly of low pressure, which is closer to the Pacific Ocean, in the inner part of the Arctic Ocean, anomalies of warm advection appear in the region near the Pacific Ocean and anomalies of cold advection appear in the region near the Atlantic Ocean. Accompanying with these anomalies of warm and cold advection in these two regions~ warm and cold anomalies appear respectively. Accordingly, SHF sent to the atmosphere from the sea surface decreases and increases, and SST increases and decreases~ SIC decreases and increases in these two regions. When there is an anomaly of high pressure in the inner part of the Arctic Ocean, the former relationships reverse. From these results~ it can be deduced that, during the interannual cycle of the coupled atmosphere-ocean system, the variability of large-scale atmospheric circulation plays a dominant role and variations of SST and SIC are mainly responding to that of atmospheric circulation. 展开更多
关键词 coupled model atmosphere-ocean-sea ice interaction (AOSI) combined complex empirical orthogonal function (CCEOF)
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