A Study of Teacher Feedback in Different English Class Types

This essay mainly focuses on the feedback move in IRF(initiate- response- feedback) to investigate the characters and functions of teacher feedback in different class types through classroom observation. The research finds that(1) teachers in different class types prefer to adopt evaluative feedback and use more positive feedback.(2) the proportion of each feedback is different in listening and speaking, reading and writing class. The implications are that English teachers in senior high school should adopt different feedback flexibly and consider what kind of feedback is more likely elicit the students' output in different class types.

PERFORMANCE ANALYSIS OF POWER SAVING CLASS OF TYPE Ⅲ IN IEEE 802.16E WITH USER INITIATED TRAFFIC

A novel method for analysing the performance of power saving class of Type III in IEEE 802.16e is proposed, which is applicable to design, maintenance and management for mobile wireless metropolitan area network. Considering the memoryless nature of user initiated packet arrival, a Geom/G/1 queue model with multiple vacations and setup period is built to capture the principle for the power saving class of Type III. By using an embedded Markov chain method and the boundary state variable theory, we obtain the queueing measures such as queueing length, waiting time and busy cycle in steady state. Correspondingly, we derive explicitly the performance measures for the power saving class of Type III in terms of handover ratio, energy saving ratio, and average packet response time. Based on numerical results, we develop a cost function to determine numerically the optimal length of sleep window and the minimal cost with different offered loads.

Hyperglycemia promotes overexpression of SR-BII isoform of the scavenger receptor class B type I in type 2 diabetes mellitus: A study in Juana Koslay City, San Luis, Argentina

The scavenger receptor class B type I (SR-BI) is a high-density lipoprotein (HDL) receptor involved in reverse cholesterol transport. Some studies reported the association to be stronger in the presence of diabetes. The full length gene encoding SR-BI is comprised in 13 exons that are alternatively spliced to produce two major transcripts: the full length SR-BI and the splice variant SR-BII, in which exon 12 is skipped. Considering that type 2 diabetes status is characterized by changes in the concentration of plasma lipids, modifications in lipoprotein size and composition, which may be important modulators of the SR-BI expression;the aims of the study were to examine the influence of SR-BI polymorphism (rs838895) on lipid profile and SR-BI mRNA expression in a population of diabetic patients living in Juana Koslay City. Blood samples were drawn from controls (n = 40) and Type 2 diabetic patients (n = 66) and DNA and total RNA were obtained. SR-BI mRNA expression was measured by RT-PCR and SR-BI polymorphism was detected by Tetra Primer ARMSPCR. Compared to controls, diabetic patients had higher fasting serum glucose, glycated hemoglobin, triglycerides, total cholesterol, lowdensity lipoprotein cholesterol, and lower highdensity lipoprotein cholesterol. SR-BI mRNA expression was lower in T2DM when compared to controls, suggesting that the hyperglycemia presents in T2DM patients down-regulates SR-BI mRNA expression. Interestingly, we found that decreased SR-BI expression resulted in markedly increased plasma LDL concentrations in T2DM subjects, and the overexpression of SRBII isoform is responsible for the markedly increased plasma LDL-c concentrations. The polymorphism (rs838895) did not modify the mRNA level of SR-BI in leucocytes from control and diabetic patients. This study provides novel evidence suggesting that hyperglycemia may affect reverse cholesterol transport by controlling SRBI expression in diabetic patients. LDL cholesterol levels are associated with low SR-BI mRNA expression in T2DM.

核电站用1E级干式变压器应用与鉴定研究

探索核电站安全系统中所用1E级干式变压器的标准体系、质量鉴定程序以及鉴定工作的关键技术,从而提高核电项目的设备国产化水平。1E级干式变压器作为核电站安全系统中的重要设备,在核电站的正常运行和安全性方面扮演着重要角色。然而,目前我国多种核电技术路线并存,因此需要针对不同核电堆型中的1E级干式变压器多次进行相应的研究和鉴定。为了减少供货周期和鉴定成本,分析了各核电技术路线中1E级干式变压器主要的技术参数和特点,包括额定容量、额定电压、抗震要求等,并结合各技术路线的标准体系,提出了1E级干式变压器的一般鉴定程序,给出了鉴定样机参数选择的包络性建议。在鉴定过程中,老化试验是非常重要且耗时最长的环节之一。提供了从原材料、绝缘结构模型到整机的整体验证思路,并提供了测试验证的实例作为参考。同时,针对鉴定中最关键的抗震试验,从楼层反应谱包络性、联合抗震接口等方面进行了论述,并给出了降低抗震风险的建议。通过以上关键技术的研究,提高了1E级干式变压器鉴定试验的严谨性和通过率,降低了鉴定过程中的风险。并通过采用先进的标准体系和质量鉴定程序,可以确保1E级干式变压器在核电站安全系统中的可靠性和稳定性,进而促进核电项目的国产化进程。

B类1型清道夫受体介导的高密度脂蛋白在年龄相关性黄斑变性中的研究进展

随着年龄的增长,机体胆固醇代谢失调和叶黄素水平异常易导致视网膜异常脂质沉积和玻璃膜疣,进而增加年龄相关性黄斑变性(age-related macular degeneration,AMD)的患病风险。视网膜细胞上的B类1型清道夫受体(scavenger receptor class B type 1,SR-B1)在脂质代谢和视网膜保护中至关重要。组织细胞表面的SR-B1通过识别并结合细胞外的高密度脂蛋白(high-density lipoprotein,HDL),将游离胆固醇逆向转运至肝脏,对维持全身包括视网膜的脂质代谢平衡与避免脂质沉积至关重要。此外,HDL同样作为转运体参与叶黄素的视网膜转运过程。叶黄素,以其独特的蓝光过滤和抗氧化功能,减少蓝光对视网膜的潜在损伤并清除有害的氧自由基,发挥保护视网膜的作用。本综述将详细探讨SR-B1在视网膜中的作用,尤其是在协助胆固醇清除和叶黄素抗氧化防御方面的重要性,并评述SR-B1以及携带的有益成分如HDL和叶黄素对缓解AMD发病的机制与最新研究进展。

言说类标记式“说句X(的)话”的语义类型与情感倾向

分析了言说类标记式“说句X(的)话”的语义类型和情感倾向。研究认为,语篇中的“说句X(的)话”系列语用标记承载着“话语预示”的核心语义,围绕此核心语义,该系列语用标记衍生出示警型、示直型等8个语义类型及其若干次类型。从词典静态语义看,“说句X(的)话”系列语用标记更多地体现出负向情感,在动态使用中主要表达说话人的“惧”“哀”“恶”等负向情感,少数能够表达说话人确信、肯定的正向情感。

职业教育一流核心课程建设的制度、要义与路径

“职业教育一流核心课程”是中华人民共和国教育部层面以“科目”为单位推进的职业教育课程建设项目。在“国家精品课程”“国家精品开放课程”“国家精品在线开放课程”“职业教育在线精品课程”递次改革的制度基础上,“职业教育一流核心课程”建设项目形成信息化赋能、类型化发展两个方面的制度要义。其中,信息化赋能的机制较为成熟,类型化发展的要义则需要通过优化课程目标、改进课程内容与结构、深化课程资源建设、稳抓课程实施质量、打造示范引领样板效应五个方面来实现。

“双一流”高校学科建设评价的实证研究

“双一流”高校学科建设评价是实现国家战略目标和争创世界一流高校的有效政策工具。结合当前阶段“双一流”建设存在的主要问题和新时期教育改革的新要求、新理念,学科建设评价体系以“三螺旋”创新实践理论为理论框架,构建了人才培养、科学研究、教师队伍建设和社会服务四个维度。基于2020年我国122所“双一流”高校学科建设的截面数据,运用聚类分析熵权法、因子分析、优劣解距离法和偏最小二乘结构方程模型得出122所高校学科建设评价总体水平及相应的排名。依照聚类分析和综合排名,将高校按照学科建设评价水平排名依次划分为“领跑型”“并跑型”和“跟跑型”三种类型,其占比分别为43.5%、42.6%、13.9%。本研究为“双一流”高校学科动态调整机制提供理论依据,通过积极构建高校、社会、政府和市场多元化绩效评价体系,拓宽学科建设与社会需求相适应并共享的交叉研究领域,构建有利的学科发展生态环境,引导高校和学科争创世界一流。

学生自主参与型班级管理要点探究

班级管理水平的高低,离不开全体学生的参与。为了更好地发挥学生在班级管理与建设中的作用,推动立德树人根本任务的落实,打造学生自主参与型班级管理模式,班主任要掌握以下要点:转变管理理念,强化服务意识;转变管理方式,优化管理效果;强化心理引导,发挥主导作用;创建自主参与型班级管理模式,发挥学生主体作用;增强自律意识,提升学生自主管理能力。

Classification and Net Primary Productivity of the Southern China's Grasslands Ecosystem Based on Improved Comprehensive and Sequential Classification System(CSCS) Approach

This research classified vegetation types and evaluated net primary productivity （NPP） of southern China＇s grasslands based on the improved comprehensive and sequential classification system （CSCS）, and proposed 5 thermal grades and 6 humidity grades. Four classes of grasslands vegetation were recognized by improved CSCS, namely, tundra grassland class, typical grassland class, mixed grassland class and alpine grassland class. At the type level, 14 types of vegetations （9 grasslands and 5 forests） were classified. The NPP had a trend to decrease from east to west and south to north, and the annual mean NPP was estimated to be 656.3 g C m-2 yr-1. The NPP value of alpine grassland class was relatively high, generally more than 1200 g C m2 yr-1. The NPP value of mixed grassland class was in a range from 1 000 to 1200 g C m-2 yr-1. Tundra grassland class was located in southeastern Tibet with high elevation, and its NPP value was the lowest （〈600 g C m＇2yrl）. The typical grassland class distributed in most of the area, and its NPP value was generally from 600 to 1000 g C m-2 yr-1. The total NPP value in the study area was 68.46 Tg C. The NPP value of typical grassland class was the highest （48.44 Tg C）, and mixed grassland class was the second （16.54 Tg C）, followed by alpine grassland class （3.22 Tg C）, with tundra grassland class being the lowest （0.25 Tg C）. For all the grasslands types, the total NPP of forest meadow was the highest （34.81 Tg C）, followed by sparse forest brush （16.54 Tg C）, and montane meadow was the lowest （0.01 Tg C）.

科创板“日落条款”的完善探究

《科创板股票上市规则》规定了双层股权结构日落条款但只涵盖了稀释型、转让型和事件触发型日落条款,未触及时间型日落条款。现行规定也存在诸多挑战,如日落条款难以触发、对中小投资者保护不足、缺少有效的监管措施等问题。为优化我国日落条款的法律架构,更好地符合实际操作需求,应考虑引入时间型和信义型日落条款,完善信息披露制度,并加强监管体系建设。

L^p estimates for Riesz transform and their commutators associated with Schr?dinger type operator

. Let H2 = （-△）2 ＋ V2 be the Schr6dinger type operator, where V satisfies reverse HSlder inequality. In this paper, we establish the Lp boundedness for V2 H2- 1, H21 V2, VH2- 1/2 and Hfl/2V, and that of their commutators. We also prove that H^IV2, Hfl/2V are bounded from BMOL to BMOL.

A型主动脉夹层术后患者主要照顾者习得性无助感的潜在剖面及影响因素分析

目的探讨A型主动脉夹层术后患者主要照顾者习得性无助感的潜在剖面及影响因素。方法采用便利抽样法于2022年1月—2023年6月选取山西省某三级甲等医院心脏大血管外科A型主动脉夹层术后患者的主要照顾者作为调查对象。采用一般资料调查表、习得性无助量表、照顾者准备度问卷和疾病不确定感家属量表进行问卷调查。使用增长混合模型识别其习得性无助感的潜在剖面,并通过单因素分析和Logistic回归分析识别其潜在剖面的影响因素。结果350名A型主动脉夹层术后患者主要照顾者习得性无助感得分为(50.40±6.28)分,可分为3个潜在剖面,分别是低无助高绝望组(12.57%)、高无助低绝望组(27.43%)、高无助高绝望组(60.00%)。Logistic回归分析显示,患者年龄、术后入住重症监护室时长、照顾者性别、照顾者文化程度、照顾者家庭人均月收入、分担照顾人数、是否为主要决策者、疾病不确定感是A型主动脉夹层术后患者主要照顾者习得性无助感潜在剖面的影响因素(P<0.05)。结论A型主动脉夹层术后患者主要照顾者习得性无助感存在异质性,医护人员可根据不同潜在剖面的影响因素进行个体化干预,以降低照顾者习得性无助感。

Solving the Class Equation x^d= β in an Alternating Group for Each β ∈ C^α∩ H_n^cand n >1

The main purpose of this paper is to solve the class equation in an alternating group, (i.e. find the solutions set ) and find the number of these solutions where ranges over the conjugacy class in and d is a positive integer. In this paper we solve the class equation in where , for all . is the complement set of where { of , with all parts of are different and odd}. is conjugacy class of and form class depends on the cycle type of its elements If and , then splits into the two classes of .

Predicting Βeta-Turns and Βeta-Turn Types Using a Novel Over-Sampling Approach

β-turn is one of the most important reverse turns because of its role in protein folding. Many computational methods have been studied for predicting β-turns and β-turn types. However, due to the imbalanced dataset, the performance is still inadequate. In this study, we proposed a novel over-sampling technique FOST to deal with the class-imbalance problem. Experimental results on three standard benchmark datasets showed that our method is comparable with state-of-the-art methods. In addition, we applied our algorithm to five benchmark datasets from UCI Machine Learning Repository and achieved significant improvement in G-mean and Sensitivity. It means that our method is also effective for various imbalanced data other than β-turns and β-turn types.

Index-<i>p</i>Abelianization Data of <i>p</i>-Class Tower Groups

Given a fixed prime number p, the multiplet of abelian type invariants of the p-class groups of all unramified cyclic degree p extensions of a number field K is called its IPAD (index-p abeliani- zation data). These invariants have proved to be a valuable information for determining the Galois group of the second Hilbert p-class field and the p-capitulation type of K. For p=3 and a number field K with elementary p-class group of rank two, all possible IPADs are given in the complete form of several infinite sequences. Iterated IPADs of second order are used to identify the group of the maximal unramified pro-p extension of K.

亚临床甲状腺功能亢进患者发生心力衰竭的风险概率分布

目的分析亚临床甲状腺功能亢进(简称亚临床甲亢)患者发生心力衰竭的风险概率分布情况,以期降低亚临床甲亢患者心力衰竭发生风险并辅助临床干预。方法选择2021年5月至2024年1月收治的133例亚临床甲亢患者作为研究对象,并根据心力衰竭判断标准分为发生组(n=49)和未发生组(n=84)。比较2组一般资料及实验室指标,采用多因素Logistic回归分析筛选心力衰竭发生的影响因素,采用潜在类别分析(LCA)模型比较亚临床甲亢患者心力衰竭发生高风险组与低风险组间影响因素分布特征的差异。结果与未发生组比较,发生组使用血管紧张素转化酶抑制剂/血管紧张素受体阻滞剂药物比例及合并基础疾病比例显著升高,亚临床甲亢病程显著延长(P<0.05)。与未发生组比较,发生组总胆固醇、低密度脂蛋白胆固醇、肿瘤坏死因子(TNF)和B型利钠肽(BNP)水平显著升高,而经皮血氧饱和度、高密度脂蛋白胆固醇(HDL-C)和胰岛素样生长因子-Ⅱ水平显著降低(P<0.01)。亚临床甲亢病程、合并基础疾病、HDL-C、TNF和BNP是亚临床甲亢患者发生心力衰竭的独立影响因素(P<0.05,P<0.01)。与亚临床甲亢并发心力衰竭低风险组比较,高风险组中“高危型分布”占比较高,而“低危型分布”占比较低(P<0.05)。结论亚临床甲亢并发心力衰竭高风险组发生心力衰竭的概率显著高于低风险组,并发心力衰竭高、低风险组中影响因素的分布特征均有差异。

Successive Approximation of p-Class Towers

Let F be a number field and p be a prime. In the successive approximation theorem, we prove that, for each integer n ≥ 1, finitely many candidates for the Galois group of the nth stage of the p-class tower over F are determined by abelian type invariants of p-class groups C1pE of unramified extensions E/F with degree [E : F] = pn-1. Illustrated by the most extensive numerical results available currently, the transfer kernels (TE, F) of the p-class extensions TE, F : C1pF → C1pE from F to unramified cyclic degree-p extensions E/F are shown to be capable of narrowing down the number of contestants significantly. By determining the isomorphism type of the maximal subgroups S G of all 3-groups G with coclass cc(G) = 1, and establishing a general theorem on the connection between the p-class towers of a number field F and of an unramified abelian p-extension E/F, we are able to provide a theoretical proof of the realization of certain 3-groups S with maximal class by 3-tower groups of dihedral fields E with degree 6, which could not be realized up to now.

Understanding the Effects of Various Factors on the Public Response to Congestion Charge: A Latent Class Modeling Approach

The standard ordered response model (SORM) is a common disaggregate approach with ordered outcomes in which the effects of various exogenous attributes are assumed constant across ordinal choices. In this study, an innovative latent class based generalized ordered response model (LC-GORM) is formulated and used to assess the effects of various factors on respondents’ choice behavior with respect to congestion charge proposal for Jakarta, Indonesia. The proposed model probabilistically assigns respondents into selfish and altruistic class memberships (latently) based on their knowledge of the proposed scheme and their specific attributes. Aiming to capture observable preference heterogeneity across ordinal choices and allow the thresholds to be varied across observations, we parameterize the thresholds as a linear function of the exogenous variables for each ordinal preference. Using stated preference data collected in Jakarta in December 2013, we incorporate the influence of a comprehensive set of explanatory variables into four categories: charges, latent variables related to respondent’s psychological motivations, mobility attributes and socio-demographic characteristics. Empirical results obviously verify the existence of preference heterogeneity across outcomes. The findings confirm that the altruistic class are more sensitive with respect to acceptance of the scheme, while the selfish class are more sensitive with respect to rejection. The key factors influencing public acceptability include the charge level and respondent variables such as car dependency, awareness of the problem of cars in society, frequency of visits to the city center and frequency of private mode usage.

论中国共产党的“类本质”——兼谈西方政党类型学研究的理论缺陷

“从来不代表任何利益集团、任何权势团体、任何特权阶层的利益”的重大宣示表明,中国共产党是一个超越了西方语境下任何一种政党理论内涵的政党,她在历史起源上、在功能特征上、在内在本质上都与西方政党有着重大区别,使得中国共产党作为一种特殊的政党类型呈现出更加鲜明的特征。在以西方为主导的政党类型学研究中,中国共产党要么被误读,要么被污名化。究其原因主要在于现有政党类型学研究立足于国家与社会二分法来确定政党的位置,这种理论模型本身是存在缺陷的。从百年党史来看,中国共产党很难用国家与社会的二分法来定位,她与人民一体同构的关系,正是她区别于其他一切落后政党、保守政党、剥削阶级政党最本质的内容,因而“人民性”与“阶级性”的有机统一就构成了中国共产党的“类本质”。