An image forming method is disclosed. The compositions contain at least about 25% by weight of polymer particles having a particle size of about 2 nm to about 30 nm. Each second memory cell has a respective portion of a second charge trap adjacent to the conductive pillar and a respective second control gate adjacent to the respective portion of the second charge trap. Two-way communications is provided between remote computers and handheld data management devices to facilitate real-time access to remote programs, assistance andor information related to the field assessment being undertaken by using a handheld data management device user. The mats can be coupled together in an end-to-end relation to obtain a desired length or width or in a stacked relation to obtain a desired thickness of the road bed. When the deviation \u0394A between an estimated vehicle acceleration Ae, which is computed based on a predetermined vehicle weight M and a driveline torque \u03c4d of the engine 2, and the actual vehicle acceleration Av is greater than or equal to a first predetermined deviation K\u0394A1, the 4WD ECU 21 estimates the transfer case oil temperature Tptu to be higher.