期刊文献+
共找到21篇文章
< 1 2 >
每页显示 20 50 100
Predication of Fhhh potential in PTA wastewater treatment 被引量:1
1
作者 CHENGShu-pei SHILei ZHANGXu-xiang YANJun DINGZhong-hai HAOChun-bo 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第1期1-4,共4页
Ebis is the intelligent environmental biotechnological informatics software developed for judging the effectiveness of the microorganism strain in the industrial wastewater treatment system(IWTS) at the optimal status... Ebis is the intelligent environmental biotechnological informatics software developed for judging the effectiveness of the microorganism strain in the industrial wastewater treatment system(IWTS) at the optimal status. The parameter, as the objective function for the judgment, is the minimum reactor volume( V _ min ) calculated by Ebis for microorganism required in wastewater treatment. The rationality and the universality of Ebis were demonstrated in the domestic sewage treatment system(DSTS) with the data published in USA and China at first,then Fhhh strain's potential for treating the purified terephthalic acid(PTA) was proved. It suggests that Ebis would be useful and universal for predicating the technique effectiveness in both DSTS and IWTS. 展开更多
关键词 SOFTWARE STRAIN POTENTIAL PREDICATION purified terephthalic acid wastewater
下载PDF
Viscosity profile prediction of a heavy crude oil during lifting in two deep artesian wells 被引量:1
2
作者 Yibo Li Hao Gao +4 位作者 Wanfen Pu Bing Wei Yafei Chen Dong Li Qiang Luo 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第7期976-982,共7页
It has been known that the productivity of artesian wells is strongly dependent on the rheological properties of crude oils. This work targets two deep artesian wells(>5000 m) that are producing heavy crude oil. Th... It has been known that the productivity of artesian wells is strongly dependent on the rheological properties of crude oils. This work targets two deep artesian wells(>5000 m) that are producing heavy crude oil. The impacts of well conditions including temperature, pressure and shear rate, on the crude oil rheology were comprehensively investigated and correlated using several empirical rheological models. The experimental data indicate that this heavy oil is very sensitive to temperature as result of microstructure change caused by hydrogen bonding. The rheological behavior of the heavy oil is also significantly impacted by the imposed pressure, i.e., the viscosity flow activation energy(Eμ) gently increases with the increasing pressure. The viscosity–shear rate data are well fitted to the power law model at low temperature. However, due to the transition of fluid feature at high temperature(Newtonian fluid), the measured viscosity was found to slightly deviate from the fitting data. Combining the evaluated correlations, the viscosity profile of the heavy crude oil in these two deep artesian wells as a function of well depth was predicted using the oilfield producing data. 展开更多
关键词 Heavy oil Rheological properties Empirical correlation Viscosity profile predication Lifting process Artesian well
下载PDF
Predication of plasma concentration of remifentanil based on Elman neural network 被引量:1
3
作者 汤井田 曹扬 +1 位作者 肖嘉莹 郭曲练 《Journal of Central South University》 SCIE EI CAS 2013年第11期3187-3192,共6页
Due to the nature of ultra-short-acting opioid remifentanil of high time-varying,complex compartment model and low-accuracy of plasma concentration prediction,the traditional estimation method of population pharmacoki... Due to the nature of ultra-short-acting opioid remifentanil of high time-varying,complex compartment model and low-accuracy of plasma concentration prediction,the traditional estimation method of population pharmacokinetics parameters,nonlinear mixed effects model(NONMEM),has the abuses of tedious work and plenty of man-made jamming factors.The Elman feedback neural network was built.The relationships between the patients’plasma concentration of remifentanil and time,patient’age,gender,lean body mass,height,body surface area,sampling time,total dose,and injection rate through network training were obtained to predict the plasma concentration of remifentanil,and after that,it was compared with the results of NONMEM algorithm.In conclusion,the average error of Elman network is 6.34%,while that of NONMEM is 18.99%.The absolute average error of Elman network is 27.07%,while that of NONMEM is 38.09%.The experimental results indicate that Elman neural network could predict the plasma concentration of remifentanil rapidly and stably,with high accuracy and low error.For the characteristics of simple principle and fast computing speed,this method is suitable to data analysis of short-acting anesthesia drug population pharmacokinetic and pharmacodynamics. 展开更多
关键词 Elman neural network REMIFENTANIL plasma concentration predication model
下载PDF
Location Prediction of Blind Ore bodies in Shuijingtun Gold Mine, Zhangjiakou, China
4
作者 WEI Jun-hao LIU Cong-qiang +1 位作者 ZHAO Zhi-qi LI Jian-wei 《Journal of Central South University》 SCIE EI CAS 2000年第3期124-128,共5页
By analyzing the metallogenic conditions and prospecting marks of F 8 fault belt in Shiujingtun Gold Mine, the geochemical samples were collected along F 8 fault belt and prospecting profile normal to the F 8 fault be... By analyzing the metallogenic conditions and prospecting marks of F 8 fault belt in Shiujingtun Gold Mine, the geochemical samples were collected along F 8 fault belt and prospecting profile normal to the F 8 fault belt. Gold and its indicator elements were tested with X ray fluorescence spectrometry and the content distribution diagram of Au, Ag, Hg and As along the F 8 fault belt was performed. The geochemical primary halo model and the Grey system model of F 8 fault belt are established. With these element distribution features and models, the blind ore bodies in the F 8 fault belt were predicted. Engineering prospect shows that the industrial orebodies have been discovered and the prediction results are dependable. 展开更多
关键词 location PREDICATION BLIND ORE BODIES geochemical primary HALO grey system model
下载PDF
Predication of Atmospheric VLE for the Ternary System Dimethyl Carbonate-Methanol-Furfural by Using the Wilson Equation
5
作者 张立庆 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第4期89-91,共3页
The vapor-liquid equilibrium of Dimethyl Carbonate-Methanol-Furfural under atmospheric pressure from DMC-CH 3OH,DMCC 5H 4O 2,CH 3OH-C 5H 4O 2 binary systematic VLE data is calculated,by using C ++(VC6.0) pr... The vapor-liquid equilibrium of Dimethyl Carbonate-Methanol-Furfural under atmospheric pressure from DMC-CH 3OH,DMCC 5H 4O 2,CH 3OH-C 5H 4O 2 binary systematic VLE data is calculated,by using C ++(VC6.0) programming language and Wilson equation.It provided important VLE data to set up mathematic models of extraction-rectifying separation of DMC and methanol by using furfural as extraction reagent.So the results can be used for chemical engineering calculation. 展开更多
关键词 dimethyl Carbonate METHANOL FURFURAL VLE PREDICATION Wilson equation
下载PDF
Filter Method and Its Consistency of Double-Star Position/SINS Integrated System
6
作者 LIN Xueyuan CHEN Yulin XU Zhibin 《Geo-Spatial Information Science》 2007年第1期17-21,共5页
According to the characteristic of Beidou Double-star positing system (for short: Double-star position), the optimal predication model of Double-star position/SINS integrated system is put forward, which can make use ... According to the characteristic of Beidou Double-star positing system (for short: Double-star position), the optimal predication model of Double-star position/SINS integrated system is put forward, which can make use of the delayed position in-formation from Double-star positioning system to predicate optimally for the integrated system, and then to correct SINS, and af-fords integrated results of some navigation parameters. In order to validate the consistency of the filter, the criteria for consistency of a filter is also studied, and the tested statistics are given, the experiment based on practical measured data shows that the filtering method is consistent with the integrated system. 展开更多
关键词 Double-star position optimal predication SINS INNOVATION CONSISTENCY
下载PDF
PTA wastewater molecular toxicity detected with gene chip
7
作者 ZHU Cheng-jun CHENG Shu-pei +6 位作者 ZHANG Xu-xiang LANG You-zhe SUN Shi-lei GU Ji-dong ZHAO Da-yong PAN Wen-yang YU Hong-xia 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第3期514-518,共5页
The purified terephthalic acid (PTA) petrochemical wastewater molecular toxicity detected by use of Mouse Genome 430A 2.0 GeneChip was conducted in this research. The toxic dose to male mice was 0.03 g/(kg, d) of ... The purified terephthalic acid (PTA) petrochemical wastewater molecular toxicity detected by use of Mouse Genome 430A 2.0 GeneChip was conducted in this research. The toxic dose to male mice was 0.03 g/(kg, d) of PTA in the wastewater. The mice liver total RNA was isolated as the temple for synthesis of eDNA and then the cDNA as the temple for synthesis of cRNA. Hybridizing the cRNA with the target genes on the gene chip, there were 232 genes expression levels up-regulated and 74 genes down-regulated discovered obviously. The foremost 40 genes for both the highest and the lowest expression levels involved endogenetic steroid and hormone metabolism, immune system, the leukocyte activity and inflammation, detoxification in liver, reproduction and growth hormone, regulation immune factors of anti-tumor and anti-infection and cancer to the mice sampled. The data suggest the PTA wastewater contained over 5 aromatics and their toxicities integrated were much higher than the pure chemical PTA. And the pure chemical PTA toxicities data cannot be used to evaluate the toxicity of the PTA wastewater instead. 展开更多
关键词 gene chip PTA wastewater male mice molecular toxicity predication of security
下载PDF
Development and Prospect on Optimum Design of Metal Forming Process
8
作者 韩静涛 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1992年第6期461-464,共4页
1.IntroductionThe research of metal forming theoryand technology always takes an importantplace in materials science and engineering.However,in a long period,the developmentof technology goes ahead of the theoreticals... 1.IntroductionThe research of metal forming theoryand technology always takes an importantplace in materials science and engineering.However,in a long period,the developmentof technology goes ahead of the theoreticalstudy.Most design principles used in prac- 展开更多
关键词 metal forming OPTIMIZATION numerical simulation quality predication
下载PDF
Joint multivariate statistical model and its applications to the synthetic earthquake prediction
9
作者 HAN Tian-xi(韩天锡) +7 位作者 JIANG Chun(蒋淳) WEI Xue-li(魏雪丽) HAN Me(韩梅) FENG De-yi(冯德益) 《Acta Seismologica Sinica(English Edition)》 CSCD 2004年第5期578-584,共8页
Considering the problems that should be solved in the synthetic earthquake prediction at present, a new model is proposed in the paper. It is called joint multivariate statistical model combined by principal component... Considering the problems that should be solved in the synthetic earthquake prediction at present, a new model is proposed in the paper. It is called joint multivariate statistical model combined by principal component analysis with discriminatory analysis. Principal component analysis and discriminatory analysis are very important theories in multivariate statistical analysis that has developed quickly in the late thirty years. By means of maximization information method, we choose several earthquake prediction factors whose cumulative proportions of total sam-ple variances are beyond 90% from numerous earthquake prediction factors. The paper applies regression analysis and Mahalanobis discrimination to extrapolating synthetic prediction. Furthermore, we use this model to charac-terize and predict earthquakes in North China (30~42N, 108~125E) and better prediction results are obtained. 展开更多
关键词 joint multivariate statistical model principal component analysis discriminatory analysis syn-thetic earthquake predication
下载PDF
Optimal predication of double-star position/SINS based on discrete integration
10
作者 林雪原 何友 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第2期179-182,共4页
Aiming at Double-Star positioning system's shortcomings of delayed position information and easy exposition of the user as well as the error increase of the SINS with the accumulation of time, the integration of D... Aiming at Double-Star positioning system's shortcomings of delayed position information and easy exposition of the user as well as the error increase of the SINS with the accumulation of time, the integration of Double-Star positioning system and the SINS is one of the developing directions for an integrated navigation system. This paper puts forward an optimal predication method of Double-Star/SINS integrated system based on discrete integration, which can make use of the delayed position information of Double-Star positioning system to optimally predicate the integrated system, and then corrects the SINS. The experimental results show that this method can increase the user's concealment under the condition of assuring the system's accuracy. 展开更多
关键词 discrete integration optimal predication Double-Star positioning system SINS
下载PDF
Plato's Theory of the Intercommunion of Forms (∑υμπλοκη Еīδων): the Sophist 259, e4-6
11
作者 Alireza Saati 《Journal of Philosophy Study》 2015年第1期35-43,共9页
Plato's lifelong confrontation with Parmenides and his metaphysical mire of believing that nothing (το μη ǒν) does not actually exist, gradually in the Sophist comes into finish, insofar as the philosopher a... Plato's lifelong confrontation with Parmenides and his metaphysical mire of believing that nothing (το μη ǒν) does not actually exist, gradually in the Sophist comes into finish, insofar as the philosopher after facing the foe and having the last laugh simmers down. In this paper after giving an interpretation of what Parmenides says, I shall present an analysis of Plato's drastic answer to him (Sophist, 259 e4-6) to see how Plato opens the impasse way created by the Eleatic philosopher. Here the intercommunion of Forms is regarded as the final answer by which Plato devastates Parmenides infamous thesis. Since hitherto no in-depth analysis is given by the scholars who are puzzled with the subject, I have tried to analyze the intercommunion of Forms philosophically. Plato's Eleatic challenge has always been crucial in Plato himself and philosophical development after him. As while as Parmenides thesis (Sph., 238 a8-9) provides the sophists opportunity to reject the falsehood, Plato's theory of Forms in contrast in order to cross off the extremely sly sophists tries to make Parmenides come down. In my opinion, the intercommunion of Forms, as the last step of the theory of Forms, basically determines Plato's late ontology tightly knitted with logic. Vindicating this proposal depends on true understanding of the intercommunion of Forms. Since Plato's late ontology, in my opinion, is closed to Frege's ontology and discussion of language, we are armed to interpret the intercommunion of Forms with recent recent logico-philosophicus achievements, I think. In this respect, this is what I have done in my paper: analyzing sentence from Plato's logico-metaphysical point of view. Ultimately, I have tried to show how the aim of the intercommunion of Forms, which Plato himself states, is demonstrating the possibility of dialogue and discourse. This statement explicitly sets forward that the discussion is bound up with several logical approaches, according to which finally full bright light is shed on different implications of the subject such as universals. 展开更多
关键词 Form intercommunion of Forms sentence PREDICATION the verb "is" (εīναι) ontological glue
下载PDF
Sequential Predication
12
作者 Eugeniusz Wojciechowski 《Journal of Philosophy Study》 2015年第5期244-256,共13页
Vladimir Markin proposes a certain construction---a generalisation of syllogistic--in which he uses the constant @ with indef'mite arity. The atomic formulae are of the following sort: S1S2 ...Sm@P1P2...Pn, where re... Vladimir Markin proposes a certain construction---a generalisation of syllogistic--in which he uses the constant @ with indef'mite arity. The atomic formulae are of the following sort: S1S2 ...Sm@P1P2...Pn, where re+n〉0. The standard syllogistic functors are here interpreted as follows: SAP=: S@P SeP=: SP@ SIP=: -SP@ SOP=: ~S@P Markin constructs a system of Fundamental Syllogistic (FS) with constant @ in an axiomatic way. Based on Markin's idea, we propose two constructions, which are formulations of the system of sequential predication built upon the quantifier-less calculus of names. The first one includes the FS system. The second one is enriched with individual variables and, among other things, allows including sequences of individual names in which one has to do with enumerative functors. The counterpart of Hao Wang's algorithm holds in the first system extended with negative terms. 展开更多
关键词 sequential predication generalization of syllogistic quantifier.less calculus of names Hao Wang'salgorithm
下载PDF
Application of constrained sparse spike inversion in reservoir predication:a case study of Oriente Basin in South America
13
作者 WANG Qing LU Zhanguo 《Global Geology》 2011年第2期87-93,共7页
In the conditions of low Signal-to-Noise Ratio(SNR) of seismic data and a small quality of log information,the consequences of seismic interpretation through the impedance inversion of seismic data could be more preci... In the conditions of low Signal-to-Noise Ratio(SNR) of seismic data and a small quality of log information,the consequences of seismic interpretation through the impedance inversion of seismic data could be more precise. Constrained sparse spike inversion(CSSI) has advantage in oil and gas reservoir predication because it does not rely on the original model. By analyzing the specific algorithm of CSSI,the accuracy of inversion is controlled. Oriente Basin in South America has the low amplitude in geological structure and complex lithologic trap. The well predication is obtained by the application of CSSI. 展开更多
关键词 CSSI reservoir predication control parameters lower frequency model impedance inversion
下载PDF
On Error Analysis and College Students' Oral Performance in Class
14
作者 杨桦 《海外英语》 2011年第8X期76-77,85,共3页
This paper analyzes errors in college students' oral English in class. There are three types of errors: interferences errors, intralingual errors and developmental errors. All the three kinds of errors can be foun... This paper analyzes errors in college students' oral English in class. There are three types of errors: interferences errors, intralingual errors and developmental errors. All the three kinds of errors can be found when students speak English. Then the paper introduces strategies for error correction from three aspects: before students' speech, during their speech and after their speech. 展开更多
关键词 error analysis PREDICATION IMPLICIT correction GENERALIZATION
下载PDF
Machine learning predicts long-term mortality after acute myocardial infarction using systolic time intervals and routinely collected clinical data
15
作者 Bijan Roudini Boshra Khajehpiri +1 位作者 Hamid Abrishami Moghaddam Mohamad Forouzanfar 《Intelligent Medicine》 EI CSCD 2024年第3期170-176,共7页
Background Precise estimation of current and future comorbidities of patients with cardiovascular disease is an important factor in prioritizing continuous physiological monitoring and new therapies.Machine learning(M... Background Precise estimation of current and future comorbidities of patients with cardiovascular disease is an important factor in prioritizing continuous physiological monitoring and new therapies.Machine learning(ML)models have shown satisfactory performance in short-term mortality prediction in patients with heart disease,whereas their utility in long-term predictions is limited.This study aimed to investigate the performance of tree-based ML models on long-term mortality prediction and effect of two recently introduced biomarkers on long-term mortality.Methods This study used publicly available data from the Collaboration Center of Health Information Appli-cation at the Ministry of Health and Welfare,Taiwan,China.The collected data were from patients admitted to the cardiac care unit for acute myocardial infarction(AMI)between November 2003 and September 2004.We collected and analyzed mortality data up to December 2018.Medical records were used to gather demo-graphic and clinical data,including age,gender,body mass index,percutaneous coronary intervention status,and comorbidities such as hypertension,dyslipidemia,ST-segment elevation myocardial infarction,and non-ST-segment elevation myocardial infarction.Using the data,collected from 139 patients with AMI,from medical and demographic records as well as two recently introduced biomarkers,brachial pre-ejection period(bPEP)and brachial ejection time(bET),we investigated the performance of advanced ensemble tree-based ML algorithms(random forest,AdaBoost,and XGBoost)to predict all-cause mortality within 14 years.A nested cross-validation was performed to evaluate and compare the performance of our developed models precisely with that of the conventional logistic regression(LR)as the baseline method.Results The developed ML models achieved significantly better performance compared to the baseline LR(C-Statistic,0.80 for random forest,0.79 for AdaBoost,and 0.78 for XGBoost,vs.0.77 for LR)(PRF<0.001,PAdaBoost<0.001,and PXGBoost<0.05).Adding bPEP and bET to our feature set significantly improved the performance of the algorithm,leading to an absolute increase in C-statistic of up to 0.03(C-statistic,0.83 for random forest,0.82 for AdaBoost,and 0.80 for XGBoost,vs.0.74 for LR)(PRF<0.001,PAdaBoost<0.001,PXGBoost<0.05).Conclusion The study indicates that incorporating new biomarkers into advanced ML models may significantly improve long-term mortality prediction in patients with cardiovascular diseases.This advancement may enable better treatment prioritization for high-risk individuals. 展开更多
关键词 ELECTROCARDIOGRAM PREDICATION Mortality prediction Machine learning
原文传递
A model for parameter estimation of multistage centrifugal compressor and compressor performance analysis using genetic algorithm 被引量:8
16
作者 CHU Fei WANG FuLi +1 位作者 WANG XiaoGang ZHANG ShuNing 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第11期3163-3175,共13页
A model for performance prediction of multistage centrifugal compressor is proposed. The model allows the users to predict the compressor performance, e.g. pressure ratio, efficiency and losses using the compressor ge... A model for performance prediction of multistage centrifugal compressor is proposed. The model allows the users to predict the compressor performance, e.g. pressure ratio, efficiency and losses using the compressor geometric information and speed by a stage stacking calculation based on the characteristics of each stage. To develop the compressor elemental stage charac- teristics, the compressor losses, such as incidence losses and friction losses, are mathematically modeled. For a composite sys- tems, for instance a gas turbine power plant, the performance of the multistage centrifugal compressor can be evaluated. Since some important parameters of the compressor model, e.g., the slip factor or, shock loss coefficient (and reference diameter DI, are hard to be determined by empirical laws, a genetic algorithm (GA) is used to solve the parameter estimation problem of the proposed model, and in turn the compressor performance analysis and parameters study are performed. The surge line for the multistage centrifugal compressor can also be determined from the simulation results. Furthermore, the model presented here provides a valuable tool for evaluating the multistage centrifugal compressor performance as a function of various operation parameters. 展开更多
关键词 performance predication centrifugal compressor incidence loss genetic algorithm surge line
原文传递
High-resolution sea surface wind speeds of Super Typhoon Lekima (2019) retrieved by Gaofen-3 SAR 被引量:3
17
作者 He FANG William PERRIE +6 位作者 Gaofeng FAN Zhengquan LI Juzhen CAI Yue HE Jingsong YANG Tao XIE Xuesong ZHU 《Frontiers of Earth Science》 SCIE CSCD 2022年第1期90-98,共9页
Gaofen-3(GF-3)is the first Chinese spaceborne multi-polarization synthetic aperture radar(SAR)instrument at C-band(5.43 GHz).In this paper,we use data collected from GF-3 to observe Super Typhoon Lekima(2019)in the Ea... Gaofen-3(GF-3)is the first Chinese spaceborne multi-polarization synthetic aperture radar(SAR)instrument at C-band(5.43 GHz).In this paper,we use data collected from GF-3 to observe Super Typhoon Lekima(2019)in the East China Sea.Using a VH-polarized wide ScanSAR(WSC)image,ocean surface wind speeds at 100m horizontal resolution are obtained at 21:56:59 UTC on 8 August 2019,with the maximum wind speed,38.9 m·s^(-1).Validating the SAR-retrieved winds with buoymeasured wind speeds,we find that the root mean square error(RMSE)is 1.86 m·s^(-1),and correlation coefficient,0.92.This suggests that wind speeds retrieved from GF-3 SAR are reliable.Both the European Centre for MediumRange Weather Forecasts(ECMWF)fine grid operational forecast products with spatial resolution,and China Global/Regional Assimilation and Prediction Enhance System(GRAPES)have good performances on surface wind prediction under weak wind speed condition(<24 m·s^(-1)),but underestimate the maximum wind speed when the storm is intensified as a severe tropical storm(>24m·s^(-1)).With respect to SAR-retrieved wind speeds,the RMSEs are 5.24 m·s^(–1) for ECMWF and 5.17 m·s^(–1) for GRAPES,with biases of 4.16 m·s^(–1) for ECMWF and 3.84 m·s^(-1)for GRAPES during Super Typhoon Lekima(2019). 展开更多
关键词 synthetic aperture radar wind speed numerical weather predication(NWP) TYPHOON
原文传递
Survey of visual sentiment prediction for social media analysis 被引量:1
18
作者 Rongrong JI Donglin CAO +1 位作者 Yiyi ZHOU Fuhai CHEN 《Frontiers of Computer Science》 SCIE EI CSCD 2016年第4期602-611,共10页
Recent years have witnessed a rapid spread of multi-modality microblogs like Twitter and Sina Weibo composed of image, text and emoticon. Visual sentiment prediction of such microblog based social media has recently a... Recent years have witnessed a rapid spread of multi-modality microblogs like Twitter and Sina Weibo composed of image, text and emoticon. Visual sentiment prediction of such microblog based social media has recently attracted ever-increasing research focus with broad application prospect. In this paper, we give a systematic review of the recent advances and cutting-edge techniques for visual senti- ment analysis. To this end, in this paper we review the most recent works in this topic, in which detailed comparison as well as experimental evaluation are given over the cuttingedge methods. We further reveal and discuss the future trends and potential directions for visual sentiment prediction. 展开更多
关键词 visual sentiment analysis sentiment predication human emotion
原文传递
A Novel Method of Finance Market Regulation Based on Control Overshoot
19
作者 Juan WANG Panos M.PARDALOS Yue SHEN 《Journal of Systems Science and Information》 CSCD 2017年第5期385-394,共10页
In the finance market, risk happened in two pattern. In one case, extreme volatility together with a short balance time leads to a great panic to the market. On the contrary, if the volatility is smaller, the time per... In the finance market, risk happened in two pattern. In one case, extreme volatility together with a short balance time leads to a great panic to the market. On the contrary, if the volatility is smaller, the time period will usually be longer. It will bring many infections to various related fields,which causes wider range influences to the economy. Both cases hurt financial market and the economy itself deeply. In this paper, we developed a novel market regulation method in which the conflict of fluctuation time and volatility will be balanced. It describes a way to compute a portfolio of relatively short time period together with smaller fluctuation volatility by using a general prediction algorithm based on overshoot in cybernetics. It can also give explanation to counter-cyclical supervision theory and macro-prudential regulation. Furthermore, it can provide numerical operation guide for countercyclical supervision theory and macro-prudential regulation. 展开更多
关键词 control overshoot finance regulation general predication method soften factor compensation mechanism
原文传递
A High-Performance Codec Suitable for the GSM Half-Rate Coding System
20
作者 ZHOU Yue-chen FENG Yu-wen(Department of Communication Engineering, Naming University of Posts and Telecommunications, Naming, 210003, P.R. China) 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 1999年第2期67-71,共5页
In this paper we describe our research work in GSM half-rate coding system for the pan-Europeandigital mobile cellular radio system. The system consists of a speech coder and a channel coder. An overview of thespeech ... In this paper we describe our research work in GSM half-rate coding system for the pan-Europeandigital mobile cellular radio system. The system consists of a speech coder and a channel coder. An overview of thespeech coding algorithm is given. The channel coder uses CRC check and a convolutional code. Interleaving is usedto randomize the channel bursts. The proposed half-rate codec is implemented with a single TMS320C30. Theinformal tests (based on MOS score) prove that our speech coder is of higher quality. 展开更多
关键词 CELP(code-excited linear predication) LSP parameters: channel coding
原文传递
上一页 1 2 下一页 到第
使用帮助 返回顶部