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关键词： 数字对象   identifier   数字信息   学术信息   数字化期刊   学术研究   被引频次   物理位置   研究成果   持续追踪  

摘要： 数字对象唯一标识符（digital object identifier,DOI）是对包括互联网信息在内的数字信息进行标识的一种工具。在传统的出版物中,书刊、磁带、光盘都有国际标准编号（ISBN、ISSN、ISCN）及其条形码,作为出版物的唯一标识。这些标识使出版物得到有效的管理,便于读者查找和利用。而网上的文档一旦变更了网址便无从追索。

关键词： model reference adaptive control (MRAC)   perturbation-based extremum seeking (PES) identifier   transient performance   indirect adaptive control  

摘要： One of the main drawbacks of model reference adaptive control (MRAC) is the weakness of its transient performance. The key reason of this imperfection is parameter's estimation error convergence. For many cases in the closed-loop control, the plant input signal cannot satisfy the persistence of excitation (PE) condition which yields poor parameters estimation error convergence. In this paper, we use a fast perturbation-based extremum seeking (PES) scheme without steady-state oscillation as the parameter identifier in indirect MRAC. The estimated parameters through the PES identifier contain the additive sinusoidal signals with distinct frequencies in the transient, which satisfy the PE condition of the plant input. Therefore, convergence of the parameters estimation error to zero will be guaranteed that results in improvement of transient performance for indirect MRAC. Also, the contrary effects on the steady-state behaviour is eliminated since the sinusoidal excitation signals amplitude exponentially converge to zero and reinitiate with every change in the unknown parameters. Simulation results for a second order example have been presented to illustrate the effectiveness of the proposed scheme.

摘要： OBJECTIVE: To better address barriers arising from missing and unreliable identifiers in neonatal medical records, we evaluated agreement and discordance among traditional and non-traditional linkage fields within a linked neonatal data set. STUDY DESIGN: The retrospective, descriptive analysis represents infants born from 2013 to 2015. We linked children's hospital neonatal physician billing records to newborn medical records originating from an academic delivery hospital and evaluated rates of agreement, discordance and missingness for a set of 12 identifier field pairs used in the linkage algorithm. RESULTS: We linked 7293 of 7404 physician billing records (98.5%), all of which were deemed valid upon manual review. Linked records contained a mean of 9.1 matching and 1.6 non-matching identifier pairs. Only 4.8% had complete agreement among all 12 identifier pairs. CONCLUSION: Our approach to selection of linkage variables and data formatting preparatory to linkage have generalizability, which may inform future neonatal and perinatal record linkage efforts.

关键词： 可视化软件  

ISBN: (纸本)9787302470632

摘要： 本书以最新版的Eclipse为开发环境，使用WindowBuilder插件为可视化开发工具，采用SWT/JFace GUI组件库，结合学生成绩管理系统和资源管理器式文本阅读器等实例程序的逐步设计过程，详细讲解了 窗口、基本组件、布局管理、容器、事件处理、菜单、工具栏、对话框、表格和树等组件的可视化创建、属性设 置、事件处理及其在Java GUI程序设计中的应用，介绍了Java GUI程序的设计思路、可视化快速开发方法 和步骤，以及必要的相关知识、原理和开发工具的基本使用方法与技巧。

关键词： Agreement   International Classification of Diseases (ICD-10) codes   Medical records   Colorectal neoplasm   Neoplasm metastasis   Comorbidity  

摘要： Background. - Quality of coding to identify cancers and comorbidities through the French hospital diagnosis database (Programme de medicalisation des systemes d'information, PMSI) has been little investigated. Agreement between medical records and PMSI database was evaluated regarding metastatic colorectal cancer (mCRC) and comorbidities. Methods. - From 01/01/2013 to 06/30/2014, 74 patients aged >= 65 years at mCRC diagnosis were identified in Bordeaux teaching hospital. Data on mCRC and comorbidities were collected from medical records. All diagnosis codes (main, related and associated) registered into the PMSI were extracted. Agreement between sources was evaluated using the percent agreement for mCRC and the kappa (k) statistic for comorbidities. Results. - Agreement for primary CRC and mCRC was higher using all types of diagnosis codes instead of the main one exclusively (respectively 95% vs. 53% for primary CRC and 91% vs. 24% for mCRC). Agreement was substantial (k 0.65) for cardiovascular diseases, notably atrial fibrillation (k 0.77) and hypertension (k 0.68). It was moderate for psychiatric disorders (k 0.49) and respiratory diseases (k 0.48), although chronic obstructive pulmonary disease had a good agreement (k 0.75). Within the class of endocrine, nutritional and metabolic diseases (k 0.55), agreement was substantial for diabetes (k 0.91), obesity (k 0.82) and hypothyroidism (k 0.72) and moderate for hypercholesterolemia (k 0.51) and malnutrition (k 0.42). Conclusion. - These results are reassuring with regard to detection through PMSI of mCRC if all types of diagnosis codes are considered and useful to better choose comorbidities in elderly mCRC patients that could be well identified through hospital diagnosis codes. (C) 2017 Elsevier Masson SAS. All rights reserved.

关键词： q-Bernstein-Schurer-Durrmeyer operators   GBS operators   partial moduli of continuity   B-continuous   B-differentiable   modulus of smoothness  

摘要： This paper is in continuation of the work performed by Kajla et al. (Applied Mathematics and Computation 2016;275 : 372-385.) wherein the authors introduced a bivariate extension of q-Bernstein-Schurer-Durrmeyer operators and studied the rate of convergence with the aid of the Lipschitz class function and the modulus of continuity. Here, we estimate the rate of convergence of these operators by means of Peetre's K-functional. Then, the associated generalized Boolean sum operator of the q-Bernstein-Schurer-Durrmeyer type is defined and discussed. The smoothness properties of these operators are improved with the help of mixed K-functional. Furthermore, we show the convergence of the bivariate Durrmeyer-type operators and the associated generalized Boolean sum operators to certain functions by illustrative graphics using Maple algorithm. Copyright (c) 2017 John Wiley & Sons, Ltd.

摘要： Presently, individuals are increasingly aware of the privacy aspects that exist in the online world. Consequently, communication systems are working towards providing users with solutions that solve their privacy concerns. To solve this need, companies started deploying systems that provide end-to-end encryption, which allow the content of the communications to be restricted only to users involved in a particular communication channel. However, a paradox emerges: a truly privacy-preserving communication mechanism should not be able to construct the social graphs of users, since they expose a tremendous amount of personal information associated with each individual. Nevertheless, simultaneously, a communi- cation application needs to be able to map the users registered in the system, so that they are able to find and communicate with each other. This thesis presents an analysis and implementation of a new Private User Discovery protocol designed to solve the leakage of information present in the social graph of users. Fundamen- tally, the PrivaTegrity User Discovery protocol provides a mechanism that allows any two users to establish a private channel of communication if both users have the corresponding public con- tact information for each other. As such, the PrivaTegrity User Discovery protocol assumes two different types of contact identifiers for every user in the system. Users need both a public con- tact identifier -such as an email address- and a private contact identifier, a cMix ID, which is exclusive to the PrivaTegrity system. In addition, the PrivaTegrity User Discovery protocol does not upload any cleartext contact information associated with the PrivaTegrity system (i. e., cMix ID). Instead, the protocol combines cryptographic key agreement techniques in a manner that the server, responsible for mapping multiple users to each other, only processes hashed and encrypted information, thus being unable of constructing any type of social graph. However, thi

关键词： 数字信息   中华医学会   论文   杂志   object   互联网   分布式   基金会  

摘要： DOI是数字对象唯一标识符（digital object identifier），是发表或出版的数字信息的标识代码。整个DOI系统是对包括互联网信息在内的数字信息进行标识的一种工具，由国际DOI基金会（IDF）进行全球分布式管理。

关键词： 数字信息   中华医学会   标注   杂志   object   出版物   国际标准   互联网  

摘要： 数字对象唯一标识符（digital object identifier，DOI）是对包括互联网信息在内的数字信息进行标识的一种工具。在传统的出版物中，书刊、磁带、光盘都有国际标准编号（ISBN、ISSN、ISCN）及其条形码，作为出版物的唯一标识。这些标识使出版物得到有效的管理，便于读者查找和利用。而网上的文档一旦变更了网址便无从追索。

关键词： breast cancer   classification and regression trees   health disparities   multiple imputation   partial synthetic data   Surveillance   Epidemiology   and End Results Program  

摘要： The National Cancer Institute's Surveillance, Epidemiology, and End Results Program releases research files of cancer registry data. These files include geographic information at the county level, but no finer. Access to finer geography, such as census tract identifiers, would enable richer analyses-for example, examination of health disparities across neighborhoods. To date, tract identifiers have been left off the research files because they could compromise the confidentiality of patients' identities. We present an approach to inclusion of tract identifiers based on multiply imputed, synthetic data. The idea is to build a predictive model of tract locations, given patient and tumor characteristics, and randomly simulate the tract of each patient by sampling from this model. For the predictive model, we use multivariate regression trees fitted to the latitude and longitude of the population centroid of each tract. We implement the approach in the registry data from California. The method results in synthetic data that reproduce a wide range (but not all) of analyses of census tract socioeconomic cancer disparities and have relatively low disclosure risks, which we assess by comparing individual patients' actual and synthetic tract locations. We conclude with a discussion of how synthetic data sets can be used by researchers with cancer registry data.