Abstract: A method, system, electronic device and storage medium for constructing locally convex feasible space are provided. The method includes acquiring a plurality of initial motion trajectory points, size information and surrounding obstacle information of a target vehicle; generating a quadtree map according to the above information; determining a target distance corresponding to each initial motion trajectory point according to the quadtree map; allocating locally convex feasible space to a first-type initial motion trajectory point by using the quadtree map, and allocating locally convex feasible space to a second-type initial motion trajectory point by using an improved convex feasible set algorithm. The first-type initial motion trajectory point is an initial motion trajectory point with the target distance greater than or equal to a set threshold; and the second-type initial motion trajectory point is an initial motion trajectory point with the target distance less than the set threshold.

Abstract: A method and system for decomposing cross-domain path planning of an amphibious vehicle.

Abstract: An IGBT physical model parameter extraction method includes obtaining an initial value and a transformation range of an IGBT physical model parameter; and correcting a model parameter by means of a correspondence between IGBT dynamic and static features and the IGBT physical model parameter and in combination with an experiment measurement result of the IGBT physical model parameter.

Abstract: Use of Cistanche deserticola polysaccharide (CDP) in promoting the proliferation and differentiation of female germline stem cells (FGSCs) is provided. Specifically, the addition of CDP in an in vitro cultivation system can promote the proliferation and differentiation of FGSCs, and especially can enhance the in vitro directed differentiation of FGSCs into oocytes, which provides a new research reference for studying the generation of oocytes in vivo and in vitro and also brings a new hope for research on physiological infertility.

Abstract: An IGBT physical model parameter extraction method includes obtaining an initial value and a transformation range of an IGBT physical model parameter; and correcting a model parameter by means of a correspondence between IGBT dynamic and static features and the IGBT physical model parameter and in combination with an experiment measurement result of the IGBT physical model parameter.

Abstract: Use of Cistanche deserticola polysaccharide (CDP) in promoting the proliferation and differentiation of female germline stem cells (FGSCs) is provided. Specifically, the addition of CDP in an in vitro cultivation system can promote the proliferation and differentiation of FGSCs, and especially can enhance the in vitro directed differentiation of FGSCs into oocytes, which provides a new research reference for studying the generation of oocytes in vivo and in vitro and also brings a new hope for research on physiological infertility.

Abstract: There is provided an integrated laser. The integrated laser includes a semiconductor waveguide having a first section, a second section and a third section. The integrated laser further includes an active region formed on the third section of the semiconductor waveguide, the active region configured for generating light, and a coupler formed on the second section of the semiconductor waveguide, the coupler configured for coupling said light between the semiconductor waveguide and the active region. In particular, the first section comprises a multi-branch splitter having a ring structure formed between two branches of the multi-branch splitter for emission wavelength control of the integrated laser. Preferably, the multi-branch splitter is a Y-branch splitter and the ring structure is formed in a space between two branches of the Y-branch splitter. There is also provided a method of fabrication thereof, an integrated tunable laser and an integrated tunable laser system.

Abstract: There is provided an integrated laser. The integrated laser includes a semiconductor waveguide having a first section, a second section and a third section. The integrated laser further includes an active region formed on the third section of the semiconductor waveguide, the active region configured for generating light, and a coupler formed on the second section of the semiconductor waveguide, the coupler configured for coupling said light between the semiconductor waveguide and the active region. In particular, the first section comprises a multi-branch splitter having a ring structure formed between two branches of the multi-branch splitter for emission wavelength control of the integrated laser. Preferably, the multi-branch splitter is a Y-branch splitter and the ring structure is formed in a space between two branches of the Y-branch splitter. There is also provided a method of fabrication thereof, an integrated tunable laser and an integrated tunable laser system.