We describe a new technique for the characterization of low{resolution X-ray spectra, based on generalized colors deened by means of a principal component analysis. Application of the method to a sample of optically and radio-selected Einstein Observatory X-ray sources yields groups that are dominated either by stars or by extragalactic sources. The method thereby provides an immediate interpre...

Particulate matter (PM) originating from mobile sources has been linked to a myriad of adverse health outcomes, ranging from cancer to cardiopulmonary disease, and an array of environmental problems, including global warming and acid rain. Till date, however, it is not clear which physical characteristics or chemical constituents of PM are significant contributors to the magnitude of the health...

Abstract The kinematic redundancy is considered as a way to improve the performance of parallel mechanism. In this paper, kinematics three degree-of-freedom mechanism with (3-DOF PM-KR) and influence redundant parts on PM-KR are analyzed. Firstly, model established. inverse solutions, Jacobian matrix, workspace solved. Secondly, Since there exists redundancy, possesses fault-tolerant performanc...

Previous investigations suggested that specific auxin spatial distribution due to auxin movements to particular embryonic regions was important for normal embryonic pattern formation. To gain information on the molecular mechanism(s) by which auxin acts to direct pattern formation in specific embryonic regions, the role of a plasma membrane (PM) ATPase was evaluated as downstream target of auxi...

Requiring the presence of a horizon imposes constraints on the physical phase space. After a careful analysis of dilaton gravity in 2D with boundaries (including the Schwarzschild and Witten black holes as prominent examples), it is shown that the classical physical phase space is smaller as compared to the generic case if horizon constraints are imposed. Conversely, the number of gauge symmetr...

OBJECTIVES This study was conducted to assess the size characteristics of particulate matter (PM) generated during waste collection and sorting, and to assess the effect of the type of waste-handling activity on levels of coarse and fine PM. METHODS A portable aerosol spectrometer calibrated to 1.2 //min was used to monitor PM generated during four types of waste-handling activities. The type...

This article reports on an investigation of the interrater agreement on the Adjustment Scales for Children and Adolescents (ASCA) syndromic profile classifications. Teaching professionals (N = 29) who shared the same classroom for a minimum of one hour per day provided independent ratings of the same child on the ASCA. Results indicated chat statistically significant interrater agreement was ac...

This paper describes a Korean Question Answering (KorQuA) system. For flexible text retrieval, we represent terms in a question as five data types, and retrieve passages by matching terms according to these data types. In answer extraction, we filter non-fact answers with negative or uncertain contexts, and interpret a relative expression as an absolute date answer for date type question. Throu...

We report on a long-term monitoring campaign of 1E 1841−045, the 12-s anomalous X-ray pulsar and magnetar candidate at the center of the supernova remnant Kes73. We have obtained approximately monthly observations of the pulsar with the Rossi X-ray Timing Explorer (RXTE) spanning over two years, during which time 1E 1841−045 is found to be rotating with sufficient stability to derive a phase-co...