Atmospheric heterogeneous reactions can potentially change the hygroscopicity of atmospheric aerosols as they undergo chemical aging processes in the atmosphere. A particle's hygroscopicity influences its cloud condensation nuclei (CCN) properties with potential impacts on cloud formation and climate. In this study, size-selected calcite mineral particles were reacted with controlled amounts of...

We discuss some aspects of the deformed W-algebras Wq,t[g]. In particular, we derive an explicit formula for the Kac determinant, and discuss the center when t is a primitive k-th root of unity. The relation of the structure of Wq,t[g] to the representation ring of the quantum affine algebra Uq(ĝ), as discovered recently by Frenkel and Reshetikhin, is further elucidated in some examples. ADP-97...

Objectives. The primary aim of this study was to determine quantitatively the extent coverage HongKong Laboratory Accreditation Scheme (HOKLAS 015) requirements by guidance checklists 016‑02 andHOKLAS 021).Methods. level conformance requirement HOKLAS 015 and 021was calculated an evaluation checklist based on in 015. A distributionanalysis relating International Standard ISO 15189:2012 process‑...

This paper describes a class of decentralized dynamic processes designed to converge to equilibrium when the equilibrium equations are linear. These processes can also be viewed as distributed algorithms for solving systems of linear equations, or as learning algorithms. The class includes processes that use a message space larger by one binary digit than the space in which the equilibrium exis...

An n-person game with side payments that can arise from an economic market is called a market game. It is proved here that any n-person market game can be obtained from a market with at most n I commodities. Moreover, no smaller number will suffice in some cases (e.g., the unanimity game). This result is then applied to settle a question regarding market games with a continuum of traders. Journ...

NATO Research Task Group IST-021/RTG-007 interpreted visualisation as a human activity supported by technology. Visualisation is therefore a means by which humans make sense of complex data. The RTG considered visualisation technologies, including display devices and techniques in relation to how they help humans to perform their tasks effectively. The RTG emphasized the human use of the comput...

In this paper we describe and compare two different methods to reduce the cardinality of the set of candidates nodules, characterized by an high sensitivity ratio, and extracted from PA chest radiographs by a fully automatized method. The methods are a rule based system and a feed-forward neural network trained by back-propagation. Both the systems allow to recognize almost the 021 % of false p...