丹东重点开发开放试验区发展策略研究

以南水北调中线一期工程下穿京九铁路隧洞工程为背景,以铁路轨道静态容许偏差管理值和容许高低倾斜值为基础,结合工程特点,通过对比经验公式及数值计算结果,提出了三孔小净距隧洞下穿铁路干线地表沉降控制标准,并采用总控制指标与分阶段控制指标相结合的方式建立监控量测管理标准。实际工程通过采用系列控制措施,施工全过程可控,实测地表沉降小于控制标准值,保证了铁路正常运营安全、隧洞施工安全和施工质量。     

Augmented Box-Behnken Designs for Fitting Third-Order Response Surfaces

Box-Behnken designs are popular with experimenters who wish to estimate a second-order model, due to their having three levels, their simplicity and their high efficiency for the second-order model. However, there are situations in which the model is inadequate due to lack of fit caused by higher-order terms. These designs have little ability to estimate third-order terms. Using combinations of factorial points, axial points, and complementary design points, we augment these designs and develop catalogues of third-order designs for 3–12 factors. These augmented designs can be used to estimate the parameters of a third-order response surface model. Since the aim is to make the most of a situation in which the experiment was designed for an inadequate model, the designs are clearly suboptimal and not rotatable for the third-order model, but can still provide useful information.     

大跨度现浇板最小板厚的简化计算

通过理论分析和公式推导把规范中的挠度验算公式进行了简化,并形成可查表格,使设计人员能通过查表验算或者选择板厚,检验板厚在总荷载下的挠度是否符合要求,同时在给定使用荷载下选择满足挠度要求的最小板厚.     

辽东湾地区油气运移输导体系特征及意义

砂体、断层、不整合面是辽东湾地区油气运移的基本要素，它们之间相互配合形成三类油气运移输导体系。以断层为垂向运移通道的油气藏常在断层带附近多层叠置，且断层多具有同生性质     

A Risk Assessment Framework for Assessing Metallic Nanomaterials of Environmental Concern: Aquatic Exposure and Behavior

Nanomaterials are finding application in many different environmentally relevant products and processes due to enhanced catalytic, antimicrobial, and oxidative properties of materials at this scale. As the market share of nano‐functionalized products increases, so too does the potential for environmental exposure and contamination. This study presents some exposure ranking methods that consider potential metallic nanomaterial surface water exposure and fate, due to nano‐functionalized products, through a number of exposure pathways. These methods take into account the limited and disparate data currently available for metallic nanomaterials and apply variability and uncertainty principles, together with qualitative risk assessment principles, to develop a scientific ranking. Three exposure scenarios with three different nanomaterials were considered to demonstrate these assessment methods: photo‐catalytic exterior paint (nano‐scale TiO₂), antimicrobial food packaging (nano‐scale Ag), and particulate‐reducing diesel fuel additives (nano‐scale CeO₂). Data and hypotheses from literature relating to metallic nanomaterial aquatic behavior (including the behavior of materials that may relate to nanomaterials in aquatic environments, e.g., metals, pesticides, surfactants) were used together with commercial nanomaterial characteristics and Irish natural aquatic environment characteristics to rank the potential concentrations, transport, and persistence behaviors within subjective categories. These methods, and the applied scenarios, reveal where data critical to estimating exposure and risk are lacking. As research into the behavior of metallic nanomaterials in different environments emerges, the influence of material and environmental characteristics on nanomaterial behavior within these exposure‐ and risk‐ranking methods may be redefined on a quantitative basis.     

Response surface methodology in quality improvement

Recent work has lead to development of robust parameter design which alleviates criticisms of the Taguchi approach. A dual response surface approach is discussed and illustrated.     

On spatiotemporal prediction for on-line monitoring data

Spatiotemporal prediction is of interest in many areas of applied statistics, especially in environmental monitoring with on-line data information. At first, this article reviews the approaches for spatiotemporal modeling in the context of stochastic processes and then introduces the new class of spatiotemporal dynamic linear models. Further, the methods for linear spatial data analysis, universal kriging and trend surface prediction, are related to the method of spatial linear Bayesian analysis. The Kalman filter is the preferred method for temporal linear Bayesian inferences. By combining the Kalman filter recursions with the trend surface predictor and universal kriging predictor, the prior and posterior spatiotemporal predictors for the observational process are derived, which form the main result of this article. The problem of spatiotemporal linear prediction in the case of unknown first and second order moments is treated as well.     

Description and evaluation of a nested cube experimental design

An incomplete factorial design based on an extension of the Fawiliar 2^kfactorial called a nested cube is proposed for use in response surface investigationso The simplicity and general efficiency of the nested cube suggest its suitability to many areas of research, especially that repeated at many locations orconductea over a long period. Comparisons to potentially competing designs are provided for bias in response estination due to fitting an ioappropriate model and for profiles of variance. merits of the nested cube are (1) a level of relative bias and variance judged to be favorable though not optimal, (2) an ability to utilize a minimum blag estimator not available to competing designs, and (3) a simplicity associated with use of equal spacing

and nearly equal replication on the margin for each factor level.     

客运专线预制箱梁后浇翼缘板施工技术

由于受隧道施工限界影响，客运专线双线整孔预制箱梁无法通过隧道，预制时先切除两侧部分翼缘板，待架设后再现浇切除部分翼缘板。介绍了切除翼缘板箱梁现浇施工支架的设计和关键施工技术，可为同类预制梁施工提供技术参考。     

陶瓷零件磨削加工质量研究

从陶瓷零件的加工技术的角度，叙述了陶瓷零件的磨削机理，分析影响瓷表面的加工质量的因素。