Abstract: A comprehensive geological-engineering classification evaluation method for low-permeability reservoirs, includes: constructing geological classification evaluation indexes of a reservoir: adopting gray correlation method to obtain main controlling factors of reservoir geology of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of the reservoir geology, constructing the geological classification evaluation indexes of low-permeability reservoirs by principal component analysis; constructing engineering classification evaluation indexes of the reservoir: adopting gray correlation method to obtain main controlling factors of geomechanics of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of geomechanics, constructing the engineering classification evaluation indexes of low-permeability reservoirs by an analytic hierarchy process; and according to classification limit values of the geological classificatio

Abstract: A method and device for preventing interruption of an on-demand service in an Internet Protocol television (IPTV) system, wherein the method includes: when detecting that a media storage and distribution unit has an Ethernet interface faulted, floating IP address of the faulted Ethernet interface over a normal Ethernet interface; selecting all working-state service data regions occupying the faulted Ethernet interface, and switching media code streams corresponding thereto to the normal Ethernet interface for transmission.

Abstract: The present invention discloses a method, an application server and a system for privacy protection in a video call, which are applied in a video call between a first terminal and a second terminal, wherein the method includes: judging whether to perform privacy protection on the first terminal; and when determining to perform privacy protection on the first terminal, playing a substitute video in a media server as a video of the first terminal to the second terminal. Using the method, the application server and the system disclosed by the present invention when performing a video call between the first terminal and the second terminal not only avoids leakage of a user's own privacy and embarrassment, but also guarantees a normal operation of the video call, thus improving the convenience of 3G services.

Abstract: The present invention discloses a method, an application server and a system for privacy protection in a video call, which are applied in a video call between a first terminal and a second terminal, wherein the method includes: judging whether to perform privacy protection on the first terminal; and when determining to perform privacy protection on the first terminal, playing a substitute video in a media server as a video of the first terminal to the second terminal. Using the method, the application server and the system disclosed by the present invention when performing a video call between the first terminal and the second terminal not only avoids leakage of a user's own privacy and embarrassment, but also guarantees a normal operation of the video call, thus improving the convenience of 3G services.