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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： 标识符   果汁   浓缩橙汁   生产工艺   无菌冷灌装   法律规定   制作工艺   配料表  

摘要： 汇源果汁研发总监李绍振告诉记者：汇源100％橙汁在配料表中明确了配料为浓缩橙汁及纯净水，并在标识中清晰体现了产品的属性为橙汁，符合国家相关的法律规定。李绍振针对汇源100％果汁的生产工艺及标识情况指出，汇源100％果汁采用的是国际先进的无菌冷灌装生产工艺，尽管这种制作工艺与消费者传统理解的鲜榨100％果汁有所不同，但其实质上仍为水果原汁，水果原汁的含量达到100％。

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。

关键词： Wavelet neural network   Wing rock motion   PID controller   Identification  

摘要： This paper presents a novel control scheme based on auto-tuning PID controller to suppress wing rock phenomena. Due to having a complex dynamic, wing rock motion identification is not a simple task, and this complexity can adversely affect the performance of PID controller. Employing a wavelet neural network based identifier, this paper develops an auto tuning adaptive PID controller to tackle the problem. Since having an acceptable control performance inevitably involves having a meticulously trained identifier, the training performance is of utmost importance. Aiming at boosting the training efficacy, a two-phase algorithm encompassing Bees algorithm and Back-Propagation (BP) is proposed by this paper to train the proposed identifier respectively in off-line and on-line modes. Due to its inherent capability in sifting the global minima, Bees algorithm is employed to find initial values of weights around which it is then possible to conduct a local search by means of BP based online training. Therefore, the identifier can precisely furnish the proposed PID controller with the system sensitivity in on-line mode. The adaption of PID controller can thus be performed in each time step. The performance of this method has been presented in simulation results and the comparison section confirms the effectiveness of proposed scheme.

关键词： Recurrent high-order neural networks   Neural identification   MIMO systems   Unknown time-delay   Lyapunov   Discrete-time nonlinear systems  

摘要： This work proposes a discrete-time nonlinear neural identifier based on a recurrent high-order neural network trained with an extended Kalman filter-based algorithm for discrete-time deterministic multiple-input multiple-output systems with unknown dynamics and time-delay. To prove the semi-globally uniformly ultimately boundedness of the proposed neural identifier, the stability analysis based on the Lyapunov approach is included. Applicability of the proposed identifier is shown via simulation and experimental results, all of them performed under the presence of unknown external and internal disturbances as well as unknown time-delays.

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： 数字对象惟一标识符（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，作为出版物的惟一标识。这些标识使出版物得到有效的管理，便于读者查找和利用。

关键词： 数字信息   标注   object   出版物   国际标准   互联网   条形码  

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： wireless data broadcast system   air index   irregular space partition   multiple data access  

摘要： This letter proposes an Index based on Irregular Partition of data identifiers (IIP), to enable clients to quickly access multiple data items on a wireless broadcast channel. IIP improves the access time by reducing the index waiting time when clients access multiple data items, through the use of irregular partitioning of the identifier space of data items. Our performance evaluation shows that with respect to access time, the proposed IIP outperforms the existing index schemes supporting multiple data access.

关键词： ALCOHOLISM   DELINQUENT behavior   PATHOLOGICAL psychology   PHENOTYPE   ANXIETY  

摘要： Alcoholism is a heterogeneous disorder;however, characterization of life-course variations in symptomatology is almost nonexistent, and developmentally early predictors of variations are very poorly characterized. In this study, the course of alcoholic symptomatology over 32 years is differentiated, and predictors and covariates of trajectory class membership are identified. A community sample of alcoholic and neighborhood matched control families, 332 men and 336 women, was recruited based on alcoholism in the men. Symptoms were assessed retrospectively at baseline (mean age = 32) back to age 15 and prospectively from baseline every 3 years for 15 years. Trajectory classes were established using growth mixture modeling. Men and women had very similarly shaped trajectory classes: developmentally limited (men: 29%, women: 42%), developmentally cumulative (men: 26%, women: 38%), young adult onset (men: 31%, women: 21%), and early onset severe (men: 13%). Three factors at age 15 predicted class membership: family history of alcoholism, age 15 symptoms, and level of childhood antisocial behavior. Numerous measures of drinking and other psychopathology were also associated with class membership. The findings suggest that clinical assessments can be crafted where the profile of current and historical information can predict not only severity of prognosis but also future moderation of symptoms and/or remission over intervals as long as decades.

关键词： Computational platforms and environments   Data publication and archiving   Databases   Metabolomics   Standards