Abstract: Disclosed are methods and devices for operating a list in a handheld device. An exemplary method can be provided by first monitoring a list and acquiring list touch initial information and then determining whether the acquired list touch initial information is multi-area touch information. When the acquired list touch initial information is determined to be the multi-area touch information, list touch final information can be acquired and stored. Based on the acquired list touch initial information and the list touch final information, whether a list operation is an expansion operation or a contraction operation is then determined. The list is expanded, when the expansion operation is determined. The list is collapsed, when the contraction operation is determined. The disclosed methods and devices can improve using experiences for users and improve use performance of the handheld device.

Abstract: A method and system for providing a self-test configuration in a device is disclosed. The method and system comprise providing a self-test mechanism in a kernel space of a memory and enabling a hook in a user space of the memory, wherein the hook is in communication with the self-test mechanism. The method and system also include running the self-test driver and utilizing the results.

Abstract: A nonsmooth surface of an object in a fluid flowstream permits a reduction of turbulent drag. The surface shape is designed to approximate a minimal surface and satisfies the equation (V.multidot..gradient.).gradient..PHI.=0, where V is the relative velocity between the fluid and the surface, .gradient..PHI. is the velocity of the strain tensor. The improved surface shape may be an array of diamond shaped elements having an airfoil like diagonal along the streamline, or it may be a series of wavelets juxtaposed to one another. The specific shape of the various types of elements to be used on the surface is selected based upon the acceleration or deceleration of the fluid at the particular position on the surface, as well as the intensity of the turbulence at that position.