As petroleum exploration advances and as most of the oil-gas reservoirs in shallow layers have been explored, petroleum exploration starts to move toward deep basins, which has become an inevitable choice. In this paper, the petroleum geology features and research progress on oil-gas reservoirs in deep petroliferous basins across the world are characterized by using the latest results of worldwide deep petroleum exploration. Research has demonstrated that the deep petroleum shows ten major geological features. (1) While oil-gas reservoirs have been discovered in many different types of deep petroliferous basins, most have been discovered in low heat flux deep basins. (2) Many types of petroliferous traps are developed in deep basins, and tight oil-gas reservoirs in deep basin traps are arousing increasing attention. (3) Deep petroleum normally has more natural gas than liquid oil, and the natural gas ratio increases with the burial depth. (4) The residual organic matter in deep source rocks reduces but the hydrocarbon expulsion rate and efficiency increase with the burial depth. (5) There are many types of rocks in deep hydrocarbon reservoirs, and most are clastic rocks and carbonates. (6) The age of deep hydrocarbon reservoirs is widely different, but those recently discovered are predominantly Paleogene and Upper Paleozoic. (7) The porosity and permeability of deep hydrocarbon reservoirs differ widely, but they vary in a regular way with lithology and burial depth. (8) The temperatures of deep oil-gas reservoirs are widely different, but they typically vary with the burial depth and basin geothermal gradient. (9) The pressures of deep oil-gas reservoirs differ significantly, but they typically vary with burial depth, genesis, and evolution period. (10) Deep oil-gas reservoirs may exist with or without a cap, and those without a cap are typically of unconventional genesis. Over the past decade, six major steps have been made in the understanding of deep hydrocarbon reservoir formation. (1) Deep petroleum in petroliferous basins has multiple sources and many different genetic mechanisms. (2) There are high-porosity, high-permeability reservoirs in deep basins, the formation of which is associated with tectonic events and subsurface fluid movement. (3) Capillary pressure differences inside and outside the target reservoir are the principal driving force of hydrocarbon enrichment in deep basins. (4) There are three dynamic boundaries for deep oil-gas reservoirs; a buoyancy-controlled threshold, hydrocarbon accumulation limits, and the upper limit of hydrocarbon generation. (5) The formation and distribution of deep hydrocarbon reservoirs are controlled by free, limited, and bound fluid dynamic fields. And (6) tight conventional, tight deep, tight superimposed, and related reconstructed hydrocarbon reservoirs formed in deep-limited fluid dynamic fields have great resource potential and vast scope for exploration. Compared with middle-shallow strata, the petroleum geology and accumulation in deep basins are...

Abstract. Context-awareness is an important part for ubiquitous computing. Many applications of ubiquitous computing have to access some related contexts in order to provide the right services at the right time and the right places. However, there are some challenges for applications in ubiquitous computing, especially for those in smart home. These challenges make the design of smart home applications much more difficult than other applications. Therefore, we propose a context-aware system, CASSHA (Context-Aware System for Smart Home Applications), which is designed for smart home applications. CASSHA consists of the components for processing, representation, provision, and coordination, and is able to provide required contexts for smart home applications without conflicts. The system overcomes most of the technical challenges for smart home applications, and satisfies the requirements for these applications.

In the schemes designed for ubiquitous computing remote access to private dato is generally achieved by requiring users to deposit the data on certoin. always-on-line servers in the network infrastructure. However. when the data to be accessed remotely is somewhat sensitive, as implied by many opplications of personal computing, users may prefer to warehouse the data in their residences rather than in somepublicplaces. In this paper, a navel scheme is proposed to realize personal computing ubiquitously by satisfving such demand The proposed scheme employs home-automation techniques to grant properly authenticated users remote access to the dnta stored somewhere offthe i@astructure (e.g., their personal workstations) while avoiding the expense of deploying high-avoilability servers at home. It also provides three kin& of authentication mechanisms and hence allows users to choose among different levels of the tradeoff between security and ubiquity, providing a complete solution for ubiquitous personal computing.

Our experience showed that the 3D continuous suturing technique for triangular wounds is a time-saving and convenient method and can make the wounds closed tighter, more stable, and reliable. The technique can be applied to any type of triangular wounds or incisions and is not limited to the clinical scenarios described in this article.

In this paper, a vision-based real-time exercise instruction system is proposed. The purposes of the system are to increase the exercise efficiency and to prevent users from being injured. This system uses a stereo-vision method to compute the 3D user information, and a vision-based pose estimation method to analyze the user's postures. The response time of the system is short enough such that the interaction between the user and the system can be done in real-time.