Inference Use by Chinese College Learners in L2 Text Comprehension

Schema theory is an influential approach to text comprehension, which can account for inferring process in L2 text reading. According to the schema theory, comprehending a text is an interactive process between the reader's prior knowledge(top-down processing) and the text(bottom-up processing). Both top-down and bottom-up processing are necessary for the inferring in reading comprehension. This paper explores how good and poor Chinese learners adopts top-down processing and bottom-up processing to make inferences in L2 reading, and finds some differences and similarities in using textual materials and background knowledge to make inferences in L2 reading by good and poor Chinese EFL learners respectively.

Ultrafine milling for the processing of gold-bearing sulphides

Ultrafine Milling technology is used to treat gold-bearingsulphides and to investigate the effects of minerals size, millingtime, liquid/solid ratio, NaCN consumption and leaching aid onleaching rate of gold. The results indicate that shorter treatingtime, decrease of NaCN consumption of 60/100 and increase of goldleaching rate of 15/100 can be ob- tained by the ultrafine millingtechnology compared with traditional cyanide leaching. Potentialexists for the new pro- cess to form the basis for an economicallyprocess for treatment of gold-bearing sulphides.

AUTOMATED ASSESSMENT OF EPIDERMAL THICKNESS AND VASCULAR DENSITY OF PORT WINE STAINS OCT IMAGE

Optical coherence tomography(OCT)enables in vivo imaging of port wine stains(PWS)lesions.The knowledge of vascular struct ure and epidermal thickness(ET)of PWS may aid the objectivediagnosis and optimal treatment.To obtain the structural parameters more rapidly and avoiduser intervention,an automated algorithm of energy map is introduced based on intensity andedge information to extract the skin surface using dynamic programming method.Subsequently,an averaged A-scan analysis is performed to obtain the mean ET and the relative intensity ofdermis indicating the corresponding vascular density.This approach is currently successfullyapplied in clinical diagnosis and shows promising guidance and assessment of PDT treatment.

pH value monitoring during human albumin purification with near infrared spectroscopy and chemometrics

Human albumin(HA)is a very important blood product which requires strict quality controlstrategy.Acid precipitation is a key step which has a great effect on the quality of final product.Therefore,a new method based on quality by design(QbD)was proposed to investigate thefeasibility of realizing online quality control with the help of near infrared spectroscopy(NIRS)and chemometrics.The pH value is the critical process parameter(CPP)in acid precipitationprocess,which is used as the end-point indicator.Six batches,a total of 74 samples of acidprecipitation process,were simulated in our lab.Four batches were selected randomly as cali-bration set and remaining two batches as validation set.Then,the analysis based on materialinformation and three dfferent variable selection methods,including interval partial least squaresregression(iPLS),competitive adaptive reweighted sampling(CARS)and correlation coeficient(CC)were compared for eliminating irrelevant variables,Fimally,iPLS was used for variablesselection.The quantitative model was built up by partial least squares regression(PLSR).Thevalues of determination coeficients(R^(2)_(C) and R^(2)_(P)),root mean squares error of prediction(RMSEP),root mean squares error of calibration(RMSEC)and root mean squared error of crossvalidation(RMSECV)were 0.969,0.953,0.0496,0.0695 and 0.0826,respectively.The paired t test and repeatability test showed that the model had good prediction ability and stability.The results indicated that PLSR model could give accurate measurement of the pH value.

Dense positrons and γ-rays generation by lasers interacting with convex target

We use quantum electrodynamics particle-in-cell simulation to study the generation of dense electron–positron plasma and strongγ-ray bursts in counter-propagating laser beam interactions with two different solid targets,i.e.planar(type I)and convex(type II).We find that type II limits fast electron flow most effectively.while the photon density is increased by about an order of magnitude and energy by approx.10%–20%compared with those in type I target.γ-photon source with an ultrahigh peak brilliance of 2?×?1025 photons/s/mm2/mrad2/0.1%BW is generated by nonlinear Compton scattering process.Furthermore,use of type II target increases the positron density and energy by 3 times and 32%respectively,compared with those in type I target.In addition,the conversion efficiencies of total laser energy toγ-rays and positrons of type II are improved by 13.2%and 9.86%compared with type I.Such improvements in conversion efficiency and positron density are envisaged to have practical applications in experimental field.

Product-Oriented Integrated CAPP System

The necessi ty of product oriented integrated computer aided process planning (CAPP) is analy zed, and the system architecture and the main functions are described in detail. The key issues of the system, such as the product oriented process planning me thod, the human machine cooperation in process planning, the generation of manu facture bill of material (MBOM) and the dynamic data exchanging technology betwe en CAPP and enterprise resource planning (ERP), are discussed. The CAPP system h as been applied at a CIMS environment corporation successfully.

Analysis of Material Behavior for Friction in a Nozzle for Turbomachinery and High Speed Vehicles

Shock-induced separation of turbulent boundary layers represents a long-studied problem in compressible flow, bearing, for example, on applications in high speed aerodynamics, rocketry, wind tunnel design, and turbomachinery. Experimental investigations have generally sought to expose essential physics using geometrically simple configurations.

Forecasting the Convergence State of per Capital Income in Vietnam

Convergence problem of an economic variable represents an underlying forecast of neoclassical economic growth model. This paper aims to analyze the convergence of provincial per capita GDP stability in Vietnam over the period of 1991-2007. This can be done by two approaches including bias data-based regression method for testing convergence and Markov chain model for describing features of long-term tendency of per capita income in Vietnam growth in provinces. The regression method results in the signs of convergence. To apply Markov process, we divide total pattern into 5 per capita income classes. Result estimated from the Markov chain model shows the poor convergence.

CUTTING POWER MODELLING IN MILLING

Successful cutting power monitoring and adaptive control strategies are based on the cor-rect understanding of the relationships among measured power signals, mechanical systems, toolcondition, and various process parameters such as spindle speed, feedrate, cutting depth, and so on.Input power of a spindle driving AC asynchronous motor in milling will be modeled to provide abasis for the investigation of these relationships. The model is verified with simulation and millingexperiments.

Information Fusion for Process Acquisition in the Operating Room

The recognition of surgical processes in the operating room is an emerging research field in medical engineering. We present the design and implementation of a instrument localization system that is based on information fusion strategies to enhance its recognition power. The system was implemented using RFID technology. It monitored the presence of surgical tools in the interventional site and the instrument tray and combined the measured information by applying redundant, complementary, and cooperative information fusion strategy to achieve a more comprehensive model of the current situation. An evaluation study was performed that showed a correct classification rate of 97% for the system.

Yunnan Reaches Consensus with CHALCO on Yunnan Copper Project

Recently, Yunnan province and Aluminum Corporation of China Limited (CHALCO) reached a consensus on the promotion of a copper deep-processing project. The CHALCO Yunnan Processing Project,

GEOPHYSICS

20111476 Chen Bin(Institute of Geophysics,China Earthquake Administration,Beijing 100081,China);Gu Zuowen Study of Geomagnetic Secular Variation in China(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,53(9),2010,p.2144-2154,6 illus.,4 tables,38 refs.)Key words:secular variations of geomagnetic field。

Crude Oil Processing Unit Trial Run in Liaoyang

The 3.5 million t/a atmospheric and vacuum distillation unit in PetroChina Liaoyang Petrochemical Company (Liaoyang Petrochemical) came on stream and produced qualified products on July 1 lth,2008.The unit is planned to process 500 000 tons of crude oil from Venezu-ela in 2008.Liaoyang Petrochemical processed crude oil from Russia in the