Abstract: The disclosure provides a power management method. The power management method is applicable to an electronic device. The electronic device is electrically coupled to an adapter, and includes a system and a battery. The adapter has a feed power. The battery has a discharge power. The power management method of the disclosure includes: reading a power value of the battery; determining a state of the system; and discharging power to the system, when the system is in a power-on state and the power value is greater than a charging stopping value, by using the battery, and controlling, according to the discharge power and the feed power, the adapter to selectively supply power to the system. The disclosure further provides an electronic device using the power management method.

Abstract: A connection structure for attaching a first electronic device onto a second electronic device is disclosed. The connection structure comprises an action unit and an assist unit, wherein the action unit and the assist unit are particularly designed to be cooperated to each other in case of connecting the first electronic device to the second electronic device. After the first electronic device is attached to the second electronic device through the connection structure, a first electrical connection portion of an electronic card is inserted into an electronic card slot in the first electronic device, and a second electrical connection portion of the electronic card is inserted into an electronic card slot in the second electronic device, thereby making the two electronic devices communicate with to each other through the electronic card. As a result, the function(s) of the first electronic device is expended.

Abstract: A connection structure for attaching a first electronic device onto a second electronic device is disclosed. The connection structure comprises an action unit and an assist unit, wherein the action unit and the assist unit are particularly designed to be cooperated to each other in case of connecting the first electronic device to the second electronic device. After the first electronic device is attached to the second electronic device through the connection structure, a first electrical connection portion of an electronic card is inserted into an electronic card slot in the first electronic device, and a second electrical connection portion of the electronic card is inserted into an electronic card slot in the second electronic device, thereby making the two electronic devices communicate with to each other through the electronic card. As a result, the function(s) of the first electronic device is expended.

Abstract: A method and system for constructing risk parity portfolios wherein the overall portfolio risk is diversified by allocating the risk equally or substantially equally across various portfolio components. The system receives a selection of investments assets, covariance matrix of the assets, and constraints including bounds on the weights of the investment assets. The system optimizes a mathematical formulation that is constrained by the bounds on the weights of the investment assets to generate a solution that is used for constructing a risk parity portfolio having optimal asset allocations that result in a balanced risk contribution.

Abstract: A method and system for constructing risk parity portfolios wherein the overall portfolio risk is diversified by allocating the risk equally or substantially equally across various portfolio components. The system receives a selection of investments assets, covariance matrix of the assets, and constraints including bounds on the weights of the investment assets. The system optimizes a mathematical formulation that is constrained by the bounds on the weights of the investment assets to generate a solution that is used for constructing a risk parity portfolio having optimal asset allocations that result in a balanced risk contribution.