The existence of digital artifacts commonly used to interact with current television system does not guarantee that those devices are adequate to the developments with iDTV, where new types of applications should be offered. The coexistence of an increasing number of facilities that make use of the remote control could result in more complex interfaces limiting its popularization. This article ...

Vietnam experiences increasing droughts throughout the dry season due to climate change, global warming,and human-caused activities like urbanization and deforestation. Drought hazard significantly impacts socioeconomic, agriculture, environment; it directly threatens human lives, livelihoods, food security, environmental degradation. It is essential have a drought assessment map assist in deve...

The issue of the balance food supply and demand has always been main national even world security. There are many factors that affect demand, interrelated. Therefore, it is necessary to study this complex in a systematic way order provide reliable theoretical basis for country formulate effective policy measures. Based on analysis current situation grain paper uses system dynamics (SD) carry ou...