The assessment of glacier mass budget is crucial for assessing water reserves stored in glaciers. Derived glacier mass changes in the Muztag Ata and Kongur Tagh (MAKT) region in the eastern Pamir, northwestern China, is helpful in improving our knowledge of the dynamics of glaciers under a changing climate in High Mountain Asia. Here, glacier area and mass changes derived from remote sensing da...

A large panel of German municipalities is employed in order to investigate the dynamic fiscal policy adjustment of local jurisdictions using a VEC model which explicitly takes account of the intertemporal budget constraint. The results confirm the central role of expenditure adjustment, nevertheless a substantial part of adjustment is due to changes in intergovernmental transfers, in particular...

We consider the optimal control problem of certain batch service queueing systems with compound Poisson arrivals and linear holding costs. The control problem involves the determination of the epochs at which the service is initiated as well as the sizes of the batches served. The service times are assumed to be independent and identically distributed, however, with a general distribution. A qu...

This paper derives a population sizing relationship for genetic programming (GP). Following the population-sizing derivation for genetic algorithms in Goldberg, Deb, and Clark (1992), it considers building block decision making as a key facet. The analysis yields a GP-unique relationship because it has to account for bloat and for the fact that GP solutions often use subsolutions multiple times...

We investigate the constraints on models of supermassive black hole (SMBH) and quasar formation obtainable from two recent observational developments: the discovery of luminous quasars at z ∼ 6, and estimates of the local mass density of SMBHs. If ∼ 90 per cent of this mass was accreted at redshifts z < ∼ 3, as suggested by the observed quasar luminosity functions, these joint constraints pose ...

We model the spread of information in a homogeneously mixed population using the Maki Thompson rumor model. We formulate an optimal control problem, from the perspective of single campaigner, to maximize the spread of information when the campaign budget is fixed. Control signals, such as advertising in the mass media, attempt to convert ignorants and stiflers into spreaders. We show the existe...

BACKGROUND China is investing considerably in health care reforms to address issues in its health care system. An example is access to innovative drugs, which remains challenging because it is largely dependent on patient self-pay. Recognizing this, the government has invested considerably in its basic medical insurance. As health care expenditure increases, there are growing concerns on budget...

Abstract. The Bohai Sea (BHS) is a semi-closed marginal sea impacted by one of the most populated areas China. supply nutrients, markedly that reactive nitrogen, via fluvial and atmospheric transport has strongly increased in parallel with growing population. Therefore, it crucial to quantify nitrogen input BHS understand processes determine quantities eliminated exported from BHS. budget parti...