Assemble‐to‐Order Inventory Management via Stochastic Programming: Chained BOMs and the M‐System

We study an inventory management mechanism that uses two stochastic programs (SPs), the customary one‐period assemble‐to‐order (ATO) model and its relaxation, to conceive control policies for dynamic ATO systems. We introduce a class of ATO systems, those that possess what we call a “chained BOM.” We prove that having a chained BOM is a sufficient condition for both SPs to be convex in the first‐stage decision variables. We show by examples the necessity of the condition. For ATO systems with a chained BOM, our result implies that the optimal integer solutions of the SPs can be found efficiently, and thus expedites the calculation of control parameters. The M system is a representative chained BOM system with two components and three products. We show that in this special case, the SPs can be solved as a one‐stage optimization problem. The allocation policy can also be reduced to simple, intuitive instructions, of which there are four distinct sets, one for each of four different parameter regions. We highlight the need for component reservation in one of these four regions. Our numerical studies demonstrate that achieving asymptotic optimality represents a significant advantage of the SP‐based approach over alternative approaches. Our numerical comparisons also show that outside of the asymptotic regime, the SP‐based approach has a commanding lead over the alternative policies. Our findings indicate that the SP‐based approach is a promising inventory management strategy that warrants further development for more general systems and practical implementations.     

Using Hybrid Assessments to Develop Civic Competency in History

This article addresses the problem of how to best design authentic writing assessments in history that support learners in demonstrating the types of higher order thinking skills needed for effective citizenship. Recent research has primarily focused on curriculum interventions intended to build disciplinary literacies through various types of document-based essay tasks. The authors argue for increased use of “hybrid” tasks that not only emphasize historical thinking, but also require ethical reasoning and decision-making as students consider enduring societal issues connected to the history curriculum. They offer recommendations for creating this type of task based on an in-depth analysis of an assessment implemented with tenth grade history students.     

傅斯年史学思想的矛盾性分析

近代史学大师傅斯年以客观实证为其史学思想的核心。但傅斯年所倡导的治学理念本身及其与治学路向之间却存在一定的矛盾性。这种矛盾性,既有其学术思想执著的追求因素,也与其时代冲突影响和爱国情怀的价值取向有关。故应辩证地看待傅斯年史学思想的矛盾性,注意充分吸取其合理成分。唯有这样,才是我们对待傅斯年学术思想的正确态度。本文将对傅斯年史学思想的矛盾性表现及其根源进行梳理和分析,并对其史学思想矛盾性的现实启示和局限性予以简要陈述。     

话语权争夺:外宣翻译的焦点

本文对外宣翻译中"话语权"争夺的表现和影响相关问题加以论述。     

评《大学英语综合教程》（全新版）——一项语料库辅助的大学英语教材评估

语料库在语言教学研究中已经成为一种重要的手段。文章在传统的定性分析的基础上,利用大学英语语料库对所选教材《大学英语综合教程》进行定量分析,统计出教材中有关的量化数据,得出相对客观的评估结果,以期给教材的编写提供一定的参考。     

龚古尔兄弟的小说创作

作为自然主义的先驱,龚古尔兄弟注意到下层人民的生活和命运,如女仆的堕落。他们研究生理病例,以此探索人物行动的原因,认为这样做才符合科学。他们也注重搜集材料,从现实生活中撷取题材。他们爱好绘画艺术,由此而采用'艺术笔法',笔触精细,却显得纤弱。     

Inference for Reliability and Stress-Strength for a Scaled Burr Type X Distribution

Inferencefor R=P(Y is considered when Xand Y are independently distributed as scaled Burrtype X random variables. Under this model, exact inference proceduresfor R cannot be found. Hence, based on the expectedFisher information matrix which is derived here, asymptotic inferenceprocedures for R and other general functions ofthe parameters are developed. A bootstrap method to estimatevariance for the maximum likelihood estimators is also discussed.To illustrate these techniques, an example using carbon fiberstrength data is given. Simulations to assess the effectivenessof these techniques, as well as other concerns, are presented.     

从刍荛鄙说到竹帛正言——略论司马迁对口传史料的考订取舍

由于文字材料的缺失和不完备,早期历史著述在较大程度上要依赖口传材料。但口传材料有其自身的特点,所以采录之前必须下一番考辨取舍和编纂加工的功夫,否则就难以显示出其应有的价值。太史公撰著《史记》,对口传史料精审考辨,摒弃荒谬者,采用可信者,或折合诸说为一说,其考订取舍口传史料的方法,堪称中国古典史学著作在此方面的优秀典范。     

新时期音像资料管理的原则与策略

通过分析知识管理和数字技术在音像资料管理中产生的影响,提出新时期音像资料管理的六项原则和四项策略。即促进学校改革与发展原则,参与管理原则,有序原则,创新原则,高效原则,激励原则以及拓展音像资料的使用空间策略,构建个人、团体、学校相结合的多层次、全方位的音像资料开发模式策略,构建有线电视网、计算机网和通信网相融合的内部知识交流与共享的宽带网络策略,设立音像资料管理部门、建立音像资料的管理制度策略。     

2000年以来我国高职英语教材研究述评

文章对我国2000年以来发表的高职英语教材研究论文进行了统计分析。结果表明,高职英语教材研究总体数量偏少、质量有待提高;所研究的教材种类不均、研究内容失衡,注重理论研究、实证研究相对缺乏。教材评价研究以内部评价为主。