Abstract: Chinese have experienced the pre-researches and partial satellite tests on the man carried cosmonautic vehicle， carried on the researches on environmental control and ecology protection subsystem in "Shenzhou" airships， carried on the researches on physical chemistry regenerating technical of environmental control and ecology protection & that of controlled ecology and ecology This paper mainly introduces the research evolution of the technical of the environmental control and ecology protection system and analyses the technical characteristic about the environmental control and ecology protection Abstract: In this paper， we provide a new practical method to abstract noise model of INS/GNSS integrated navigation system for Kalman filter from measuring data， we first designed the experiment which based on the elaborate deduction， then we log the data of GNSS and made stationary test of the stochastic process， after that， we fit the model and estimate the This method， we think， can be used practically in other integrated navigation
The Internet and electronic communications (also called computer mediated communications， or CMC) doesn't just mean new tools for communication; it means new ways to Today your organization interacts with its various constituents differently - employees， board members， customers， partners and others - depending upon the nature of the message， the goals you are trying to achieve and the strengths (and weaknesses) of the available media - telephones， voice mail， fax machines， print， Electronic communications adds a powerful new channel that not only will change how you use this mix of options， but it will create entirely new ways to For example: Electronic communications lets you combine numerous media - text， graphics sound， video， - into a single That can result in far more meaningful communications tailored to the nature of your particular In contrast to broadcasting， narrowcasting reflects the ability to develop numerous communications for subsets of your market or Electronic communications is It engages audiences in active， two-way That requires a new way of thinking about advertising copy and the handling of public The pay-off， however， is a self-selected audience， engaged and actively participating in the communications Two-way communication is nothing But electronic communications creates a new form of many-to-many communications that lets geographically distributed groups communicate interactively and simultaneously through text， sound and You can hold inexpensive video conferences or press conferences from your desk， or conference with people at several desks located across the One of the burgeoning phenomena of the Internet is businesses and organizations sponsoring， supporting and moderating discussion groups about issues， products， strategies - anything of interest to the organization and its Sponsorships are also solicited for popular resources， such as indexes and other Internet search tools， and these provide a further communications and marketing Many organizations are using electronic communications facilities， such as the World Wide Web， as internal communications tools to enhance team Many individuals at different locations can work on the same documents， hold meetings and integrate research Electronic communications removes the power of communications gatekeepers to both positive and negative Most organizations are used to controlling the messages that go out to its constituents through managers， spokespeople and But with the Internet， constituents begin to talk among themselves， requiring new approaches and a new emphasis on listening and reacting， not just With the Internet you have the ability to transmit and receive large amounts of information quickly to and from individuals and workgroups around the This changes the way activists， for example， can galvanize communities， inform legislators and change public It changes the sources and depth of your constituents' knowledge It also lets those constituents reach you with new kinds of communications they may never have attempted And these are only some of the changes we are seeing There will be unanticipated and ripple effects we can't For example， will electronic mail become a buffer to avoid communications or confrontations that might be better resolved in person? Will managers find themselves traveling more in order to gain the personal touch with members of distributed workgroups? How will organizations prepare themselves for this increased level of participatory constituent interaction?
