基于单片机的无线遥控小车研究与实现

本文介绍了一种由STC12C5A60S2单片机控制的无线遥控小车,采用控传和图传独立设计的思想,即数据收发模块进行控制和温度数据的传输,图传模块负责作业环境的图像传输.控传部分以STC12C5A60S2单片机为核心,利用NRF24L01+模块数据收发,L298N电机驱动两路直流电机,使小车完成相应动作;DS18B20负责检测温度,由小车收发模块发射,LCD1602液晶模块显示.系统采用模块化设计,结构紧凑,便于优化,且可靠性能高.     

社会控制理论视野下的青少年犯罪预防研究

近年来,随着经济社会的发展,城乡结构的变化,尤其是城市流动人口的膨胀,农村留守儿童的增加,信息传播渠道的多样化和各种思潮的泛滥,极大地影响着青少年思想的成长和行为表达方式的变化,多种因素作用下,我国青少年犯罪呈现新一轮的高发态势,也呈现出一些新的特点。通过对当下青少年犯罪现象、成因和特点的剖析,做好预防青少年犯罪工作是解决问题的关键,为此:应该重视亲职教育,充分发挥家庭教育的功能;尊重和关爱学生,发挥学校教育的中坚力量;多方协作,营造健康良好的社会环境。     

A Rejection Principle for Sequential Tests of Multiple Hypotheses Controlling Familywise Error Rates

We present a unifying approach to multiple testing procedures for sequential (or streaming) data by giving sufficient conditions for a sequential multiple testing procedure to control the familywise error rate (FWER). Together, we call these conditions a ‘rejection principle for sequential tests’, which we then apply to some existing sequential multiple testing procedures to give simplified understanding of their FWER control. Next, the principle is applied to derive two new sequential multiple testing procedures with provable FWER control, one for testing hypotheses in order and another for closed testing. Examples of these new procedures are given by applying them to a chromosome aberration data set and finding the maximum safe dose of a treatment.     

我国资格刑研究及立法建议

资格刑是刑罚种类之一,完善资格刑立法及其适用对于健全刑法体系,预防和惩治犯罪具有巨大的意义。本文通过对我国现行资格刑立法的分析和与外国资格刑立法的比较,提出完善我国资格刑立法的建议。     

经典化批评的现代性历史元叙事及其悖论——以建国后17年文学批评为中心

以现代性历史元叙事作为切入口,可以发现建国后17年经典化批评的历史观具有自反性的宿命以及自身无法突破的悖论.这种尴尬、悖谬的悲剧性历史决定了以现代性、"一体化"、"不断革命"论为特征的文学批评必然走向崩溃的命运.     

时间性与有限性本质中的道与Ereignis及其普遍语言性问题

在老庄思想中,由于其自身中包含有“有”与“无”的冲突结构,道从来就不是一种具有绝对可理解性和现成性特征的纯粹在场性。这一点构成了道的思想与始终拒绝“无”的问题的西方形而上学传统的本质差别。但另一方面,道的思想也因此而表现出它与海德格尔的Ereignis之思在根本问题层面上的同构性;而“无”的本质性参与则表明,与Ereignis相同,道作为以自身为根据的绝对超越者,始终是从时间性、有限性方面被理解的。这是真正具有现代意义的思想原则,它不仅规定了道与Ereignis的不可言说性以及与此相关的语言本质问题,而且,现代哲学解释学的全部思想也都建立在这一思想基础上。     

忠实与叛逆的辩证统一——论翻译中忠实标准的兼容并蓄

翻译的忠实可分为源语文本派忠实、源语语境派忠实和译者认知派忠实。文章揭示了这三种忠实其实都只是忠实的一个方面而已,对翻译中的忠实与叛逆应有不同的理解。三种忠实标准的兼容并蓄,以及翻译中忠实和叛逆的辩证统一,或许才能还忠实以本来的面目。     

Robust inference for estimating equations with nonignorably missing data based on SIR algorithm

Nonresponse is a very common phenomenon in survey sampling. Nonignorable nonresponse – that is, a response mechanism that depends on the values of the variable having nonresponse – is the most difficult type of nonresponse to handle. This article develops a robust estimation approach to estimating equations (EEs) by incorporating the modelling of nonignorably missing data, the generalized method of moments (GMM) method and the imputation of EEs via the observed data rather than the imputed missing values when some responses are subject to nonignorably missingness. Based on a particular semiparametric logistic model for nonignorable missing response, this paper proposes the modified EEs to calculate the conditional expectation under nonignorably missing data. We can apply the GMM to infer the parameters. The advantage of our method is that it replaces the non-parametric kernel-smoothing with a parametric sampling importance resampling (SIR) procedure to avoid nonparametric kernel-smoothing problems with high dimensional covariates. The proposed method is shown to be more robust than some current approaches by the simulations.     

Testing the Only-Child Advantage in Cognitive Development in the Context of China’s One-Child Policy

Population Research and Policy Review - Using data from a recent national survey of approximately 20,000 Chinese middle school students, we tested the difference in cognitive development between...     

Validation of the Learning Transfer System Inventory (LTSI) in the Korean corporate context

Lack of a valid instrument to measure learning transfer predictors has been the major obstacle hindering Human Resource Development (HRD) professionals from moving forward. This problem is one of the lingering HRD issues in South Korea, in which human resources have been strategically emphasized as a critical asset due to the scarcity of natural resources. To address this issue, this study aims at testing the validity and reliability of the data collected with the Korean Learning Transfer System Inventory (LTSI) Version 4. A sample of 753 managers from 16 Korean industries was divided into two subsamples for exploratory and confirmatory factor analyses. Reliability and the effect of common method variance on the factor structure were examined, with the results suggesting that the LTSI is valid for use in the Korean industry.