1 School of Earth and En vi ron men tal Sci ences, Se oul Na tional Uni ver sity, Se oul, Korea 2 De part ment of Earth, At mo spheric and Plan e tary Sci ences, Mas sa chu setts In sti tute of Tech nol ogy, Cam bridge, Mas sa chu setts, USA 3 Col lege of Re sources Sci ence and Tech nol ogy, Beijing Nor mal Uni ver sity, Beijing, China 4 De part ment of Earth Sci ences Cen tre, Gothenburg Uni ...

SUMMARY The colony-forming ability of HeLa cells that survived an initial dose of X-irradiation proved abnormally sensitive to lucanthone. Surviving cells gradually regained normal resist ance to lucanthone treatment, which implied that lucanthone was acting to inhibit a postradiation repair process. Enhance ment of cell killing by lucanthone was comparable in degree to that induced by actinomy...

From the Muscle Research Unit, Depart­ ment of Internal Medicine (X.B., J.M.G.), and the Department of Nephrology (E.P.), Hospital Clínic, Institut d’Investigacions Biomèdiques August Pi i Sunyer, Univer­ sity of Barcelona, Barcelona. Address re­ print requests to Dr. Grau at the Muscle Research Unit, Department of Internal Medicine, Hospital Clínic, Institut d’Inves­ tigacions Biomèdiques Augu...

Notations like hybrid automata are highly useful in the development process of hybrid systems to document requirements in early design steps. When it comes to implementation a part of the requirements will be realized in software in a discrete-time manner. We therefore study suucient conditions which ensure that an automaton operating in discrete-time reenes a hybrid automaton with its underlyi...

In hospital merger cases, the courts have often based geographic market areas on patient flow criteria. Given patient heterogeneity and the importance of distance to hospital and health plan restrictions on hospital choice, Capps et al. (2003a) show that potential market power effects can be understated. While willingness-to-pay(WTP) measures derived from individual choice models provide an alt...

Uncertainty may be taken to characterize in­ ferences, their conclusions, their premises or all three. Under some treatments of uncer­ tainty, the inference itself is never character­ ized by uncertainty. We explore both the sig­ nificance of uncertainty in the premises and in the conclusion of an argument that in­ volves uncertainty. We argue that for un­ certainty to characterize the conclusi...

indications of the limitations of domain-independent function nding. In concluding, let me anticipate a possible objection, namely that the Bacon algorithm is a weak straw man against which to compare a new function-nding approach. In fact, though Bacon is the oldest and simplest of AI function nders, my experience suggests that it is quite diicult to outperform. I expect that more recent syste...

The problem in which a firm has to meet the c.emand for the services of several distinct but related equipment over a planning horizon is considered. An equipment of one type can be converted into an equipment of the other type at some costs. Hence demands may be met by direct capacity installation (expansion) or by converSiLQn from another type of eqUl.pment. Capacity installation and conversi...