An electrical connector module assembly is provided and includes first and second shells that mate together along an interface extending along a length of the shells. Social groups of a particular user that may be representative of topics, people, projects, and the like can be automatically learned based at least in part upon historical correspondence of the user. A transfer mechanism may be coupled to the positioning member and to a movable belt support, and may move in response to the change in positions of the positioning member. The passive valve and the active valve are integrated into the cooling system pump circuit such that the pressure difference between the high and low fluid pressure and the control positions of the active valve determine the control position of the passive valve. A contact mass composed of metallic silicon and copper catalyst contains an effective amount of a catalyst powder obtained by mechanical surface treatment of a powder mixture of tin powder and another metal, typically copper powder, on a ball mill, stamp mill, jet mill, mechanofusion device or the like. The device is provided with an anti-reflection diffraction grating having the period to prevent light that has been led through the semiconductor optical waveguide towards the portion connected to the optically functional element from being reflected in the direction from which the light has been led.