1,710 research outputs found
Are economic forecasts rational?
This paper discusses at an undergraduate level how forecast rationality can be tested. It explains that forecasters should correctly use any relevant information they knew in making their predictions. It shows that forecast rationality can be tested by determining whether the forecasters' prediction errors are predictable. After addressing what data and methods can be used for testing rationality, the paper presents tests of the price-forecast rationality of individual professional forecasters. Unlike results of previous studies, the test results show that those forecasters' price predictions appear to be rational.Forecasting ; Rational expectations (Economic theory)
DAVID F. ALLMENDINGER, Jr. — Paupers and Scholars. The Transformation of Student Life in Nineteenth-Century New England.
Developing Teaching Case Studies in Information Systems: Lessons from Experience
The purpose of this panel is to explore the issues involved in developing effective case study materials for classroom use
How Senior Executives Think and Work: Implications for the Design of Executive Information Systems
How do senior executives think ? Where do they get their information from ? What strategies do they use in learning about their organisational environments ? Which information media do they prefer to use ? Finding answers to these questions is fundamental in helping us understand how to build Executive Information Systems (EIS). This paper reviews the literature on senior executive work and decision making before presenting some practical guidelines for the design and implementation of high level executive information systems
Guidance at a critical moment: thoughts on CERD’s General Recommendation on racial profiling by law enforcement officials
Feed intake pattern, behaviour, rumen characteristics and blood metabolites of finishing beef steers offered total mixed rations constituted at feeding or ensiling
peer-reviewedTwo experiments were undertaken. In Experiment 1, behaviour, intake pattern and
blood metabolites, were recorded for steers offered total mixed rations (TMR) based
on grass silage and concentrates, and constituted either at ensiling (E-TMR) or feedout
(F-TMR). Fourteen continental crossbred steers (mean starting weight 505 (s.d.
41.5) kg) were assigned to each of the following eight treatments: grass silage offered
ad libitum (SO), E-TMR diets constituted in approximate dry matter (DM) ratios of
grass:concentrates of 75:25 (EL), 50:50 (EM) and 25:75 (EH), F-TMR diets constituted
in approximate DM ratios of grass silage:concentrates of 75:25 (FL), 50:50 (FM)
and 25:75 (FH), and finally concentrates ad libitum (AL). Total DM intake increased
linearly (P < 0.001) and the time spent eating and ruminating decreased linearly
(P < 0.001) with increasing concentrate proportion. Animals on the F-TMR diets had
higher total DM intakes (P < 0.05) and plasma glucose (P < 0.05) and urea (P < 0.001)
concentrations than animals on the corresponding E-TMR diets. No effect of method
of feed preparation on intake pattern or behaviour was recorded. In Experiment 2,
four ruminally cannulated Holstein-Friesian steers of mean initial live weight 630 (s.d.
23.2) kg were used to evaluate rumen characteristics for four of the above diets (FL,
EL, FH and EH) in a 4 × 4 latin square design. Higher concentrate diets resulted in
lower rumen pH (P < 0.05), higher lactic acid (P < 0.001) and ammonia (P < 0.05)
concentrations and lower acetate:propionate (P < 0.05). F-TMR was associated with
a higher (P < 0.05) rumen volatile fatty acid concentration but no difference in other
rumen fermentation characteristics compared to E-TMR. Concentrate proportion and method of feed preparation had no effect (P > 0.05) on rumen pool sizes but animals
consuming the high concentrate diet had a faster (P < 0.05) rumen passage rate of
NDF than animals on the low concentrate diet.B. Cummins was in receipt of a Teagasc Walsh Fellowship
- …