Abstract: Disclosed embodiments are related to techniques for powering compute platforms in low temperature environments. Embodiments include a preheating stage that is added to a power up sequence. The preheating stage may include a force-on stage and a force-offstage. During the force-on stage, all power rails of target components are forced to an ON state so that the target components consume current. When a target operating temperature is reached, the power rails of the target components are turned off, which causes the target components to revert back to their initial (pre-boot) state allowing the normal boot process to take place. Since the target components are now heated up, the boot process can execute faster than when the target components were cold. Other embodiments may be described and/or claimed.

Abstract: Disclosed embodiments are related to techniques for powering compute platforms in low temperature environments. Embodiments include a preheating stage that is added to a power up sequence. The preheating stage may include a force-on stage and a force-offstage. During the force-on stage, all power rails of target components are forced to an ON state so that the target components consume current. When a target operating temperature is reached, the power rails of the target components are turned off, which causes the target components to revert back to their initial (pre-boot) state allowing the normal boot process to take place. Since the target components are now heated up, the boot process can execute faster than when the target components were cold. Other embodiments may be described and/or claimed.

Abstract: The present invention discloses a four-double working method for danger assessment and prediction of water inrush in a roof aquifer of a coal seam, and belongs to the coal mining field. The method includes: calculating a water abundance index and/or a danger index of water inrush of a roof of a to-be-mined coal seam according to position classification of the roof of the to-be-mined coal seam; and obtaining a water inrush assessment result of the roof of the to-be-mined coal seam according to the water abundance index and/or the danger index of water inrush of the roof of the to-be-mined coal seam and excavation area position information of the roof of the to-be-mined coal seam. The present invention resolves the problem that current water abundance assessment and danger assessment and prediction of water inrush are complex and inaccurate.

Abstract: The invention provides a method and a device for greatly increasing an irradiation range of a lamp.

Abstract: The invention provides a method and a device for greatly increasing an irradiation range of a lamp.

Abstract: The invention relates to a light distribution method for a COB module LED street lamp lens capable of illuminating 3 or 5 lanes. The light distribution method is characterized in that the light emitted by a COB module LED light source is firstly refracted by a drop-shaped refraction lens and then refracted secondarily by a light distribution curved surface lens to achieve an optimal irradiation effect. The light distribution method provides a foundation for the use of a single COB module LED light source in an urban road, and has the advantages of low cost and high efficiency.

Abstract: The invention relates to a light distribution method for a COB module LED street lamp lens capable of illuminating 3 or 5 lanes. The light distribution method is characterized in that the light emitted by a COB module LED light source is firstly refracted by a drop-shaped refraction lens and then refracted secondarily by a light distribution curved surface lens to achieve an optimal irradiation effect. The light distribution method provides a foundation for the use of a single COB module LED light source in an urban road, and has the advantages of low cost and high efficiency.