According to the law of diminishing marginal utility, utility when consumers purchase a certain product shows trend. As special product, cultural tourism products, whether is produced during consumption also affected by utility. This paper takes “Impression Liu Sanjie” as research object and uses linear regression equation model study tourists products. The results show that buying products an ...

With the development of deregulated power systems and increase of prices in some hours of day and increase fuel price, demand response programs were noticed more by customers. demand response consists of a series of activities that governments or utilities design to change the amount or time of electric energy consumption, to achieve better social welfare or some times for maximizing the benefi...

It is well-known that a conditional independence statement for discrete variables is equivalent to constraining to zero a suitable set of log–linear interactions. In this paper we show that this is also equivalent to zero constraints on suitable sets of marginal log–linear interactions, that can be formulated within a class of smooth marginal log–linear models. This result allows much more flex...

We find marginal-Fermi-liquid- (MFL) like behavior in the Hubbard model on a square lattice for a range of hole doping and on-site interaction parameter U. Thereby we use a self-consistent projection operator method. It enables us to compute the momentum and frequency dependence of the single-particle excitations with high resolution. The Fermi surface is found to be holelike in the underdoped ...

This paper considers some fundamental questions concerning marginally trapped surfaces, or apparent horizons, in Cauchy data sets for the Einstein equation. An area estimate for outermost marginally trapped surfaces is proved. The proof makes use of an existence result for marginal surfaces, in the presence of barriers, curvature estimates, together with a novel surgery construction for margina...

introduction: marginal adaptation of cast restorations is essential for their long-term success. as dentists usually assign ditching of dies to laboratory technicians, and ditching has a significant effect on marginal adaptation, the aim of this study was to compare ditching by laboratory technicians and standard approach on marginal adaptation of cast restoration. materials and methods: in thi...

In the current environment, product design involves choosing from a vast array of components and subcomponents. By developing modular platforms and communicating with multiple suppliers, each product becomes a bundle of features. The multitude of potential product configurations poses a challenge in identifying optimal configurations to offer customers. For most companies, the greatest challeng...

The modern literature on commodity bundling argues that a monopolist may use bundling to extend its monopoly power into an otherwise oligopolistic market by foreclosing entrants or excluding rivals. This approach is contrary to the Chicago critique of Posner and Bork, who defend bundling as irrelevant to such monopolization, being incapable of extending the “one monopoly rent.” However, this pa...