نتایج جستجو برای: rates
تعداد نتایج: 435722 فیلتر نتایج به سال:
This paper summarizes stratificational theory, and applies its linguistic methods in a sememic analysis of English prepositions. The phenomenon of interlocking diversification is shown to be quite generally present among the prepositions. Also, the analysis of prepositions is shown to entail a partial sememic analysis of other words; it therefore provides a starting point for the sememic analys...
This study was conducted to investigate the effect of nocturnal light pulses (NLPs) on the feed intake and metabolic rate in geese. Fourteen adult Chinese geese were penned individually, and randomly assigned to either the C (control) or NLP group. The C group was exposed to a 12L:12D photoperiod (12 h light and 12 h darkness per day), whereas the NLP group was exposed to a 12L:12D photoperiod ...
The tremendous variation in brain size among vertebrates has long been thought to be related to differences in species' metabolic rates. It is thought that species with higher metabolic rates can supply more energy to support the relatively high cost of brain tissue. And yet, while body temperature is known to be a major determinant of metabolic rate, the possible effects of temperature on brai...
I consider two issues concerning how to monitor global poverty for the Millennium Development Goals, the selection of poverty lines, and the data sources for monitoring poverty over time. I discuss the choice of a single international line, converted using purchasing power parity (PPP) exchange rates, versus the use of country-specific poverty lines. I note the difficulties in constructing PPP ...
During the design of ABR tra c management at the ATM Forum, we performed several analyses to ensure that the ABR service will operate e ciently over satellite links. In the cases where the performance was unacceptable, we suggested modi cations to the tra c management speci cations. This paper describes one such issue related to the count of missing resource management cells (Crm) parameter of ...
We tested whether the reduction of metabolic rate (MR) in hibernating Cercartetus nanus (Marsupialia, 36 g) is better explained by the reduction of body temperature (Tb), the differential (ΔT) between Tb and air temperature (Ta), or thermal conductance (C). Above the critical Ta during torpor (Ttc) of 4.8 ± 0.7°C, where the Tb was not regulated, the steady-state MR was an exponential function o...
Many animal-pollinated plant species have been introduced to non-native regions without their usual pollinators. Nevertheless, some of these alien species managed to establish reproducing naturalized populations, which might negatively affect native plants. Recent studies have shown that many naturalized alien species can readily attract native pollinators. However, it is not known whether alie...
We analyze the accuracy of four methods for measuring e ective bandwidths (EBs). We also seek to point out advantages and drawbacks of the four estimators. We nd that for nite time realizations of a process the measured e ective bandwidth di ers considerably from its analytical counterpart. We also show that increasing the trace length has little impact on the accuracy of the measurements. We e...
We analyze the effects of founding conditions on the survival of new firms. We allow the effects of founding conditions to be transitory and estimate how long such effects last. Our findings indicate that founding effects are important determinants of exit rates. Moreover, in most cases, their effect on survival seems to persist without much of an attenuation for several years after the foundin...
This article describes a new system for induction of oblique decision trees. This system, OC1, combines deterministic hill-climbing with two forms of randomization to nd a good oblique split (in the form of a hyperplane) at each node of a decision tree. Oblique decision tree methods are tuned especially for domains in which the attributes are numeric, although they can be adapted to symbolic or...
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