Abstract: A method for analyzing gait is provided for a system including multiple accelerometers. The method includes: for each time point and each accelerometer, calculating a root mean square (RMS) value according to the accelerations sensed on sensing axes of the corresponding accelerometer; calculating a cross correlation coefficient according to the RMS values of a first accelerometer and a second accelerometer; calculating a first auto-correlation coefficient of the RMS values of the first accelerometer; calculating a second auto-correlation coefficient of the RMS values of the second accelerometer; and calculating a first gait index according to the cross correlation coefficient, the first auto-correlation coefficient, and the second auto-correlation coefficient.

Abstract: A portable electronic apparatus includes an operating system comprising an application layer, an application framework layer, a libraries layer and a kernel layer. The application layer includes a cloud user interface allowing a user to perform an interactive function. The application framework layer includes a plurality of cloud components and at least a cloud service. The libraries layer includes a plurality of cloud managers. The kernel layer includes a cloud server driver, which is connected to the cloud managers to start the cloud service, so that the cloud service calls one of the cloud components according to the interactive function. By such configuration, the portable electronic apparatus of this invention can carry a private cloud to provide the service of a portable personal cloud.

Abstract: A portable electronic apparatus includes an operating system comprising an application layer, an application framework layer, a libraries layer and a kernel layer. The application layer includes a cloud user interface allowing a user to perform an interactive function. The application framework layer includes a plurality of cloud components and at least a cloud service. The libraries layer includes a plurality of cloud managers. The kernel layer includes a cloud server driver, which is connected to the cloud managers to start the cloud service, so that the cloud service calls one of the cloud components according to the interactive function. By such configuration, the portable electronic apparatus of this invention can carry a private cloud to provide the service of a portable personal cloud.

Abstract: An interactive cloud communication system includes at least a client end and a cloud. The client end includes a browser. The cloud includes a cloud server module and a server module connected to the cloud server module. The cloud server module includes a websocket authentication unit. When the client end connects to the cloud through the browser, the cloud server module performs an authentication mechanism to the client end by the websocket authentication unit for opening at least a transmission channel allowing information transmission between the client end and the cloud.

Abstract: A multi-cloud communication system includes a plurality of clouds, each of which has a cloud server and a plurality of servers connected with the cloud server. The cloud server has a service information of the servers. When a first cloud server of a first cloud transmits a request information to a second cloud server of a second cloud, the second cloud server determines a level relationship between the first and second clouds, and acquires a target data from at least a second server of the second cloud according to the request information and the service information. The target data is encoded according to the level relationship, and then transmitted to at least a first server of the first cloud through the second cloud server and the first cloud server. The first server, according to the level relationship, decodes the encoded target data to obtain the target data.