A set of relatively small-sized devices is disclosed for safety andor illuminative lighting in conjunction with a horse or similar animal, or with equipment associated with such an animal or with transportation devices for individuals. In one embodiment, intelligent resource pool management is utilized to assist in application provisioning performed based upon a blueprint and deployment model defining requirements of the provisioned application. The first outer diameter is greater than the second outer diameter. The invention is also directed at high-rebound golf balls which can be easily and efficiently manufactured using the same material. This digital logic module of oximeter sensor probe is provided with the light source driving function and the light source capturing function for reducing loading of the microprocessor, so that a cheaper microprocessor can be used in the oximeter sensor for reducing the development cost of the oximeter. Also, if the fault is not found timely, there are provisions in which the service is escalated to increased levels of support to ensure customer satisfaction.