Abstract: A method for developing an electronic course may include describing an illustrative scenario that presents a problem for a student of an electronically deliverable course. At least one possible role assignment for a corresponding student of the course may be defined based on the illustrative scenario. A task may be provided for the student based on the role assignment and the scenario. A guidance system may be established which is accessible to the students over the electronic communications network. The guidance system provides guidance for solving the task or problem associated with the scenario.

Abstract: A window-mounted artificial Christmas tree is provided to be located adjacent the inside of a picture window. The artificial Christmas tree extends substantially the full height of the window and has an upright supporting member engagable with a generally horizontal surface of a lower frame member below the window. A resiliently mounted extension member is located at the top of the upright supporting member and engages a generally horizontal surface of an upper frame member above the window. The upright supporting member supports a plurality of artificial tree branches with the lower branches being longer than the upper ones and preferably with the branches at any given height which extend generally parallel to the window being longer than those extending transversely to the window to provide a generally semi-elliptical shape in horizontal cross section. The artificial Christmas tree thereby takes up a minimum amount of space within the room.

Abstract: An alarm is operatively associated with a movable frame and a stationary frame of a sliding door assembly. It has a plunger engagable with one frame or the other, which plunger is urged outwardly and activates a signal if the alarm is removed from its position. The alarm includes a case in which a modular component can be inserted with the component including a source of power, contacts, and a signal which can be an audible signal or a sending signal which activates a remote burglar alarm. The case of the alarm has a locking pin which can lock the plunger in place when the alarm is removed by the occupant. The alarm is also designed with a gravity-operated block which prevents the plunger from being pushed back into the case to turn off the alarm unless the alarm is turned upside down.

Abstract: An alarm for a sliding door or the like is provided. The alarm is operatively associated with a movable frame and a stationary frame of a sliding door assembly. It has a plunger engagable with one frame or the other, which plunger is urged outwardly and activates a signal if the alarm is removed from its position. The alarm includes a case in which a modular component can be inserted with the component including a source of power, contacts, and a signal which can be an audible signal or a sending signal which activates a remote burglar alarm. The case of the alarm has a lock which can lock the plunger in place when the alarm is removed by the occupant. The plunger is also designed to be prevented from being pushed back into the case to turn off the alarm without the use of an elongate element insertable into an access opening in the case.

Abstract: A normally pressure-free, failsafe, emergency door closer for use in hospitals, nursing homes or other locations where handicapped persons are housed, comprising an actuating mechanism triggered by a sensing device such as a smoke detector, a spring-loaded arm with a bumper on one end to engage the door and the other end of the arm rotatably attached to the wall adjacent to and above the door and free to rotate in a horizontal plane. The spring-loaded arm is retained in an open position by a vertical pin engaging the horizontal closer arm. The pin is mechanically linked to the armature of an electromagnet opposed by a coil spring. On signal from the sensing device the electromagnet releases the armature and the coil spring urges the pin upwards releasing the closer arm, the end of which engages the door and closes it.