A general central limit theorem and a subsampling variance estimator for α‐mixing point processes

We establish a central limit theorem for multivariate summary statistics of nonstationary α‐mixing spatial point processes and a subsampling estimator of the covariance matrix of such statistics. The central limit theorem is crucial for establishing asymptotic properties of estimators in statistics for spatial point processes. The covariance matrix subsampling estimator is flexible and model free. It is needed, for example, to construct confidence intervals and ellipsoids based on asymptotic normality of estimators. We also provide a simulation study investigating an application of our results to estimating functions.     

Stress-strength reliability of exponentiated Fréchet distributions based on Type-II censored data

In this paper, we consider inference of the stress-strength parameter, R, based on two independent Type-II censored samples from exponentiated Fréchet populations with different index parameters. The maximum likelihood and uniformly minimum variance unbiased estimators, exact and asymptotic confidence intervals and hypotheses testing for R are obtained. We conduct a Monte Carlo simulation study to evaluate the performance of these estimators and confidence intervals. Finally, two real data sets are analysed for illustrative purposes.     

From Source to Evidence? Teachers' Use of Historical Sources in Their Classrooms

To explore questions in history and to construct historical narratives, historians work with evidence from the past. This approach to teaching history (inquiry involving the use of evidence) is an accepted part of the research on history teaching and is promoted widely in standards frameworks and practitioner publications as “good history instruction.” What happens in a standards-based setting where teachers are covering large bodies of content? Do teachers use sources as part of their daily instruction? If so, how? We were afforded the unique opportunity to spend time observing what 35 teachers do by analyzing 352 videos submitted over a 4-year time span. We observed a spectrum of source use within and across teacher practice. In this article we share what we noticed.     

客源信息缺失是制约旅游业发展的短板

重视对客源市场信息的了解,才算了解“市场导向”的真实内涵,深入了解客源市场需求,是解决目前旅游市场营销中种种不足与弊端,促使旅游业健康发展的根本。     

省域经济洼地区域中心城市发展战略研究——以江苏淮安为例

省域经济洼地地区是实现区域协调发展的重要板块和关键区域。以江苏省淮安市为例,从战略角度审视淮安建设成为苏北重要中心城市的意义和基础,并提出淮安在区域经济和流域经济层面上两个维度的发展定位和三个方向的发展路径。通过纵向融入京沪高铁和京杭运河两条复合发展轴,横向建设淮河流域生态经济带,打造苏皖在江北地区的跨界合作示范区等战略,推动淮安苏北重要中心城市的建设和省域经济协调发展格局的形成。     

翻译的等效性:一个相对的概念

在英汉互译中,设法使原语与译语达到几乎完全的等效,就成了译者为之竭尽全力奋斗的目标。它要求译者融会多方面的知识,考虑多种因素,结合自己各方面的才能,综合运用各方面的阅历、技巧和文化视点的转换构思。它是翻译领域中要求较高的一种技艺和技巧。文章从词汇表达,句子构建和语篇处理的角度,谈翻译的等效性。     

从盖恩斯《刑前一课》看小说视点与叙事层面的建构

盖恩斯在《刑前一课》里从零视点与悬念的建构、外视点与悖论的建构、内视点与意识流、多视点聚焦与立体感等方面来研究小说视点与叙事层面的相互关联。他从零视点的角度建构人称悬念、瞬间悬念和期待性悬念,从外视点的角度设置了主题悖论、言辞悖论和语境悖论。为了克服零视点和外视点描述的单调性和乏味性,盖恩斯把内视点与意识流进行了有机结合,从触景生情式意识流、内心独白式意识流和交织式意识流等方面探究人物心理与社会环境的内在关联。他还在人物评述和场景氛围等方面采用了多视点策略,从多层次和多侧面的角度来聚焦于具体的人物、物件或场景,构建了叙事层面的立体感,拓展了现代黑人小说创作的美学认知空间。     

Child labour measurement: Whom should we ask?

Funding decisions to support vulnerable children are tied to child labour statistics, hence the importance of an accurate measurement. The author analyses whether the type of respondent plays an important role in explaining variations in child labour statistics. Using data from two sites in Tanzania, the analysis shows that “whom we ask” matters considerably when estimating the prevalence of child labour. The results suggest that prevalence increases by approximately 35 to 65 per cent when using child self‐reports rather than proxy reports. This bias affects 14 to 31 per cent of the sample, depending on the indicator. Discrepancies decrease as the child ages and increase if proxy attitudes demonstrate opposition to child labour.     

Mesurer le travail des enfants: qui faut‐il interroger?

La mesure du travail des enfants est une entreprise difficile et incertaine, mais cruciale puisque le ciblage de l'aide en dépend. Dans ce contexte, l'auteure montre à partir de données tanzaniennes, et en utilisant deux définitions du travail des enfants, que le choix du répondant influe considérablement sur les chiffres obtenus, supérieurs de 35 à 65 pour cent quand ce sont les déclarations des enfants qui sont prises en compte plutôt que celles des adultes. Le biais touche 14 à 31 pour cent de l'échantillon. L'écart diminue avec l'âge de l'enfant et se creuse lorsque le répondant adulte est hostile au travail des enfants.     

模糊语义研究方法论纲

研究模糊语义必须以查德的“模糊集”理论作指导．运用现代语言学和现代语义学以及相关学科的研究成果来进行研究。这样也就使得研究方法具有多角度、多层次的特点,从而形成一个方法论系统：从整体方法上看,可实行宏观研究与微观分析相结合、定性研究与定量描述相结合、一般规律研究与特殊规律研究相结合的方法;从具体方法上看,应该注重模糊语义学的“综合性的边缘学科”属性,强调不同学科之间的渗透,融合各相关学科的理论和知识,来对模糊语义展开全面而深入的研究。