This study explored students' perceptions of self-directed learning (SDL) and collaborative learning (CL) with/without technology in an information and communications technologysupported classroom environment. The factors include SDL, CL, SDL supported by technology, and CL supported by technology. Based on the literature review, this study hypothesized that students' perceptions of learning without technology positively predict their perceptions of learning supported by technology. An instrument was developed and two studies, a pilot study and a main study, were undertaken. The pilot study surveyed 219 secondary school students and established the factors through exploratory factor analysis with good validity and reliability. The main study surveyed 500 secondary school students to confirm the factors and to establish the relationships between these factors through structural equation modeling. The results validated the four-factor structure model and revealed that students who reportedly engaged in SDL and CL in face-to-face contexts also engaged in these forms of learning in technology-supported contexts. The findings indicate that students' learning without technology support is related to their use of technology for learning. It may be advisable for teachers to develop students' learning processes in the face-to-face context without technology before engaging them in technology-supported learning.

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A series of four experiments was conducted with a commercial strain of laying chickens in an attempt to experimentally produce Fatty Liver-Hemorrhagic syndrome (FLHS). Different dietary energy sources, environmental temperatures and feeding schedules were the experimental variables. Increasing the environmental temperature from 12.2 degrees C. (experiment 1) to 27.8 degrees C. (experiment 2) did not drastically alter total liver fat, 2.7 g. (experiment 1) vs. 2.9 g. (experiment 2) or the incidence of FLHS, 0.0% (experiment 1) vs. 1.0% (experiment 2). Likewise, in experiment 4, changing the environmental temperature from 22.2 degrees C. to 30.6 degrees C. or from 30.6 degrees C. to 22.2 degrees C. did not significantly (P greater than .05) alter total liver fat or liver wet weight. The greatest incidence (50%) of FLHS occurred in birds which were restricted in feed intake and exposed to an environmental temperature of 30.6 degrees C. from 32-36 weeks of age followed by ad libitum feeding at a temperature of 22.2 degrees C. from 36-40 weeks of age. These birds ate 26.8% more feed than the control birds during the ad libitum feeding period. Restricted feed schedules (experiment 3) resulted in significantly (P less than .05) lower 40 week liver wet weights and total fat when applied during the growing (14-20 weeks of age) and early lay (20-28 weeks of age) periods.