我不学习小伟姐

小伟姐是姑姑的小女儿，大我九岁。我挺喜欢这个姐姐的，首先她漂亮，而且嘴巴又甜，见到人总是笑得阳光灿烂。

称赞而不是批评——面对不听课的中职生

学生上课不专心,爱玩手机,爱睡觉。比起往届一些班级,情况很糟糕。批评教育一段时间后,并没有变化,还是那样,情况反而更糟糕。这也许就是中职教育中许多任课老师会遇到头痛的事。老师严格管,会激发师生矛盾;老师放之任之,学生会不学无术,纪律散漫。面对这样棘手的问题,我多年来的教学经历和家庭孩子教育经历告诉我,学生还是要管,但不是批评,而是用称赞的方式。

Iterative Learning Control With Incomplete Information： A Survey

Abstract--This paper conducts a survey on iterative learn- ing control （ILC） with incomplete information and associated control system design, which is a frontier of the ILC field. The incomplete information, including passive and active types, can cause data loss or fragment due to various factors. Passive incomplete information refers to incomplete data and information caused by practical system limitations during data collection, storage, transmission, and processing, such as data dropouts, delays, disordering, and limited transmission bandwidth. Active incomplete information refers to incomplete data and information caused by man-made reduction of data quantity and quality on the premise that the given objective is satisfied, such as sampling and quantization. This survey emphasizes two aspects： the first one is how to guarantee good learning performance and tracking performance with passive incomplete data, and the second is how to balance the control performance index and data demand by active means. The promising research directions along this topic are also addressed, where data robustness is highly emphasized. This survey is expected to improve understanding of the restrictive relationship and trade-off between incomplete data and tracking performance, quantitatively, and promote further developments of ILC theory. Index Terms--Data dropout, data robustness, incomplete in- formation, iterative learning controi（ILC）, quantized control, sampled control, varying lengths.

Perceptual Models of Art students and Its Enlightenment on English Teaching

Art students, as a whole, have a variety of learning style of sensory receivers. The Variety of learning styles requires the variety of teaching strategies. The analysis of learners＇ learning styles is one of the factors on which the design of learning strategies should be based. Matching teaching strategies and mismatching strategies are chosen intentionally according to the teaching contents, the teaching goals, and the learner＇s learning styles. Matching teaching strategies can reach the best result of teaching and learning. On the contrary, mismatching strategies can remedy the disadvantages caused by learning styles and be helpful for the development of learning styles.

Study on Unsteady Hydrodynamic Performance of Propeller in Waves

The speed of a ship sailing in waves always slows down due to the decrease in efficiency of the propeller. So it is necessary and essential to analyze the unsteady hydrodynamic performance of propeller in waves. This paper is based on the numerical simulation and experimental research of hydrodynamics performance when the propeller is under wave conditions. Open-water propeller performance in calm water is calculated by commercial codes and the results are compared to experimental values to evaluate the accuracy of the numerical simulation method. The first-order Volume of Fluid(VOF) wave method in STAR CCM+ is utilized to simulate the three-dimensional numerical wave. According to the above prerequisite, the numerical calculation of hydrodynamic performance of the propeller under wave conditions is conducted, and the results reveal that both thrust and torque of the propeller under wave conditions reveal intense unsteady behavior. With the periodic variation of waves, ventilation, and even an effluent phenomenon appears on the propeller. Calculation results indicate, when ventilation or effluent appears, the numerical calculation model can capture the dynamic characteristics of the propeller accurately, thus providing a significant theory foundation forfurther studying the hydrodynamic performance of a propeller in waves.

Cultural Introduction in English Vocabulary Teaching in China

Every language possesses three cardinal elements： phonetic element, lexical element, and grammatical structure, of which lexis is the fundamental pillar that supports the huge system of a language. The close relationship between language and culture is most readily seen in words. In fact, being the most active and elastic element of a language, vocabulary has the greatest culture-loading capacity. Vocabulary teaching is an integral part of foreign language teaching. Its efficiency has a direct relation with the development of the learners＇ communicative competence. Vocabulary is culture-bound, so it is self-evident that culture introduction is indispensable in teaching. The author attempts to make a comparison between English and Chinese cultures, to make clear how cultural disparities exist in English and Chinese vocabulary, and to put forward some constructive suggestions on how to integrate culture into vocabulary teaching in Chinese schools, so as to promote the efficiency of vocabulary teaching and improve learners＇ competence in intercultural communication.

Study on Factors of College Student＇s Network service time Based on Bayesian Networks

Due to the uncertainty of the factors that influence the network service time and other characters of college student, Bayesian Network is used to model this kind of system. Different algorithms are used for learning Bayesian Networks in order to compare several models. It is suggested that researchers can use Bayesian Networks to explore the potential relationship between variables of complex social problems. The result indicates that learning target and family closeness degree are the key variables which influenced college student＇ s network service time. Origin of student and family economy didn＇ t influence college student＇ s network service time directly. Schools and community should strengthen the education of college students life planning and communication with parents.

The Habitus Made Me Do It： Bourdieu＇s Key Concept as a Substruction of the Monad

My claim is that Bourdieu＇s concept of habitus is not consistent and its ambiguities conceal an imprecision concerning the subject of social action. Indeed, Bourdieu defines habitus in three different ways： as a capacity, as a set of dispositions, and as a scheme for practice. That is why he cannot solve the problem of the duality of agent and habitus and produces a problem offundamentation, as we can see in his troubles to determine which is the substratum of social actions. Though Bourdieu claims he borrows the concept of habitus from Husserl and other phenomenologists, many divergences can be stated in the way they conceive it. Unlike Bourdieu, phenomenology can establish precise relations of fundamentation between agent, habitus, and the ego because it avoids the fallacy of the wrong level involved in the attribution of systemic properties to personal eogic structures. Accordingly, it provides a consistent and precise concept of the habitus,

Analysis on Students＇ Performance in SAMBET Course

In order to probe into the problems that English learners meet in the second language acquisition （SLA）, this thesis intends to evaluate students＇ performance in the process of studying SAMBET course in Beijing Information Science and Technology University （BISTU）, through identifying and analyzing the errors and improper uses of English, and exploring the reasons that account for them by means of SLA analysis devices. The author has talked about the errors and improper uses that are made by test attendants of SAMBET course. The analysis and exploration on these errors and improper uses illustrate that they occur owing to various implied reasons, e.g., the influence of Ll, ignorance of grammatical rules, carelessness, outside pressure, and attitude, aptitude, and confidence of individual learner, etc

CAUSAL ATTRIBUTION REGARDING SUCCESS AND FAILURE IN ENGLISH LEARNING

According to the attribution theory,achievement attributions have significant consequences for subsequent achievement motivation and future behavior.This study sought to determine some of the causes to which junior students at vocational college attributed success or failure in their English learning.The results of the present study revealed that the majority of the students participated in the study identified themselves as unsuccessful English learners and collectively the students placed more importance on the causal attributions of interest in English learning,effort and teachers' help.When divided by their perceived learning performances (successful learners vs.unsuccessful),the successful learners placed more importance on English learning ability,interests in English,and teacher's help than did the unsuccessful ones.The paper analyzes the attribution tendency,gender difference and group difference as well.

Learner Autonomy:What Is Going on in Previewing by Non-English Majors?

预习是学生自主学习的一个重要组成部分,而且对课堂学习效果有很大的影响。本文报告了一项对非英语专业学生预习英语精读课文的研究。通过使用有声思维、回顾访谈和观察等方法,发现非英语专业学生在预习中能发挥自主性,主要体现在确定预习目的和预习材料,选择预习方法,预习中对所学内容监控和评价。虽然本研究中的英语成功学习者组和不成功学习者组都很重视课前预习,都能发挥自主性,但从外语学习的角度看,前者比后者更能有效地操控预习这个自主学习活动。根据研究结果,文章就英语教学和相关教材的编写提出了一些建议。

Investigation of the association between all-trans-retinol dehydrogenase (RDH8) polymorphisms and high myopia in Chinese

Retinoic acid level in the retina/choroid is altered in induced myopia models.All-trans-retinol dehydrogenase(RDH8) is an important enzyme of retinoic acid metabolism.This study aimed to investigate the association of the RDH8 gene with high myopia.Three single nucleotide polymorphisms(SNPs) [RDH851(rs2233789) ,RDH8E5a(rs1644731) ,and RDH855b(rs3760753) ]were selected,based on the linkage disequilibrium pattern of RDH8 from a previous study,and genotyped for 160 Han Chinese nuclear families with highly myopic(-10 diopters or worse) offspring as well as in an independent group with 166 highly myopic cases(-10 diopters or worse) and 211 controls. Family-based association analysis was performed using the family-based association test(FBAT) package,and genotype relative risk(GRR) was calculated using the GenAssoc program.Population-based association analysis was performed using Chi-square test.These SNPs were in linkage equilibrium with each other.SNPs RDH851(rs2233789) and RDH8E5a(rs1644731) both did not show association with high myopia.SNP RDH855b(rs3760753) demonstrated significant association(P=0.0269) with a GRR of 0.543(95%confidence interval=0.304-0.968,P=0.038) .The association became statistically insignificant,however,after multiple comparison correction.Haplotype analysis did not show a significant association either.Population-based association analysis also showed no significant association(P>0.05) .Our family-and population-based data both suggest that the RDH8 gene is unlikely to be associated with high myopia in Chinese.

S-＊w-Principal Ideal Domains

Let D be an integral domain, ＊a star-operation on D, and S a multiplicative subset of D. We define D to be an S-＊w-principal ideal domain if for each nonzero ideal I of D, there exist an element s ∈ S and a principal ideal （c） of D such that sI （c） In this paper, we study some properties of S-＊w-principal ideal domains. Among other things, we study the local property, the Nagata type theorem, and the Cohen type theorem for S-＊w-principal ideal domains.

Interpretation of English Ambiguous VerbLocative Prepositional Phrase Constructions by Mandarin and Spanish Speakers:Evidence for the Representational Deficit Hypothesis

This paper presents an empirical study of the acquisition of English ambiguous verb-locative prepositional phrase constructions （VLPPs） by adult Mandarin and Spanish speakers. This study assumes that the semantic properties of the target VLPPs that relate to change-of-location in sentences such as The boat floated under the bridge arise from an uninterpretable syntactic feature selected by English but unselected by Mandarin Chinese and Spanish. Results obtained from an animated cartoon selection task indicate that neither the Mandarin nor the Spanish speakers at any level of English proficiency possess native-like interpretative knowledge. Tense/ Aspect effects on the interpretation of the target constructions by Spanish speakers were also found. These results are interpreted as consistent with the Representational Deficit Hypothesis view （Hawkins, 2003, 2005） of adult second language acquisition.

CONVERGENCE ANALYSIS IN SENSE OF LEBESGUE-p NORM OF DECENTRALIZED NON-REPETITIVE ITERATIVE LEARNING CONTROL FOR LINEAR LARGE-SCALE SYSTEMS

In this paper,a decentralized iterative learning control strategy is embedded into theprocedure of hierarchical steady-state optimization for a class of linear large-scale industrial processeswhich consists of a number of subsystems.The task of the learning controller for each subsystem is toiteratively generate a sequence of upgraded control inputs to take responsibilities of a sequential stepfunctional control signals with distinct scales which are determined by the local decision-making units inthe two-layer hierarchical steady-state optimization processing.The objective of the designated strategyis to consecutively improve the transient performance of the system.By means of the generalized Younginequality of convolution integral,the convergence of the learning algorithm is analyzed in the sense ofLebesgue-p norm.It is shown that the inherent feature of system such as the multi-dimensionality andthe interaction may influence the convergence of the non-repetitive learning rule.Numerical simulationsillustrate the effectiveness of the proposed control scheme and the validity of the conclusion.

Analytical approach to study a mathematical model of CD4 ＋ T-cells

Human immunodeficiency virus （HIV） emerged as one of the most serious health issues of the modern era. Till date, it challenges the scientists working in the fields related to its prevention, least spread and eradication. It affects not only the person suffering from it but also the communities and their economies. Mathematical modeling is one of the ways to explore the possibilities of prediction （and control） strategies for contagious deceases. In this paper, we have tried to extend the scope of a currently available prediction model for a continuous time span. For this purpose, an analytical investigation of the system of nonlinear differential equations, governing the HIV infection of CD4 ＋ T-cells, is carried out. A new emerging analytical technique Optimal Variational Iteration Method （OVIM） has been used to obtain an analytical and convergent solution. Analytical solutions are continuous solutions that can be used to predict the phenomena without the involvement of interpolation or extrapolation errors. On the other hand, their use in the derived equations, depending upon solution itself, is far easier than the numerical solutions. We have presented the error analysis and the prediction curves graphically. Moreover, a comparison with traditional Variational Iteration is also provided. It is concluded that the traditional method fails to converge for the updated models which involve the delayed differential equations.