In northern China, the recent eco-environment protective policies played a very important role in the ecological environment protection and rehabilitation. To better understand the quantitative effect of the prohibiting grazing policy on grassland desertification reversal process, in this paper, Yanchi County was selected as a case study to conduct a quantitative research on the effect of prohi...

A practical tool for natural language modeling and development of human-machine interaction is developed in the context of formal grammars and languages. A new type of formal grammars, called grammars with prohibition, is introduced. Grammars with prohibition provide more powerful tools for natural language generation and better describe processes of language learning than the conventional form...

In the framework of a geographic application displaying maps, there are several solutions for protecting a sensitive object. Sensitive objects can be hidden, masked, blurred or even replaced by fake objects. In this paper we suggest a framework to specify protection mechanisms to enforce whenever a prohibition is derived from the security policy. This framework includes (i) logical rules allowi...

how to deal with the prohibiting forbiddance in the context of trade is the difficult mystery of forbidden professions (makāsib muharrameh). some would consider it as an autumn breeze, impeding the thriving transactions of the market; others perceive the encounter of the forbidding prohibition with trade as a collision of two chemicals getting mixed with each other and producing a third materia...

Brecher argues that the practices of selling blood and kidneys are akin to the practices of prostitution and wage-labour since they all involve commodification and, by implication, should be subject to legal prohibition. I suggest that these practices need not involve commodification and that they should only be condemned if people are forced into them because of their lack of power. Rather tha...

I propose a general geometric framework in which to discuss the existence of time observables. This frameworks allows one to describe a local sense in which time observables always exist, and a global sense in which they can sometimes exist subject to a restriction on the vector fields that they generate. Pauli’s prohibition on quantum time observables is derived as a corollary to this result. ...

It is deeply entrenched dogma that relativity theory prohibits superluminal propagation. It is also experimentally well-established that under some circumstances, classical electromagnetic fields propagate through a dielectric medium with superluminal group velocities and superluminal phase velocities. But it is usually claimed that these superluminal velocities do not violate the relativistic ...