Abstract: A method for setting viewing options in a social network application is disclosed. First, a plurality of sections are provided. Second, a first order for the plurality of sections is provided wherein the sections are in the first order. Then an image icon to represent the user is provided. Next, a selection icon is provided for the viewing user to select, wherein when the selection icon is selected, the piece of content information is secured and the section is secured. Next, a plurality of secured sections is collected the secured sections is displayed in a second order.

Abstract: A device is designed for collecting heartbeat information. Heart Beat Variation (HRV) is calculated based on the collected heartbeat information. The device has textile sensors so that a user wears a clothing with such sensors to collect the heartbeat information.

Abstract: A system and related method are provided for managing technical documents. The system includes a graphical screen divided into a plurality of document units arranged in a m×n manner, where both m and n are integers larger than 1. Each of the document units occupies a screen area for displaying document information of a document, and said document information including important information, at least one related drawing or both of the document.