Results 21 to 30 of about 1,220,900 (264)

Neuropsychological Performance in Long-term Cannabis Users [PDF]

open access: yesArchives of General Psychiatry, 2001
Although cannabis is the most widely used illicit drug in the United States, its long-term cognitive effects remain inadequately studied.We recruited individuals aged 30 to 55 years in 3 groups: (1) 63 current heavy users who had smoked cannabis at least 5000 times in their lives and who were smoking daily at study entry; (2) 45 former heavy users who ...
H G, Pope   +4 more
openaire   +2 more sources

Activation and long term performance

open access: yesActa Psychologica, 1967
Abstract Is activation theory useful or necessary for the analysis of long term performance on perceptual tasks? After criticizing the theory for being too broad and nonspecific, because even contradictory results would not embarrass it, this report illustrates the problem with data on human and animal vigilance.
openaire   +2 more sources

Enhancing the long-term performance of recommender system [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2019
16 pages, 10 ...
Leyang Xue, Peng Zhang, An Zeng
openaire   +2 more sources

Mesoscopic Numerical Simulation of Sulfate Ion Erosion of Concrete Based on Damage Model

open access: yesTaiyuan Ligong Daxue xuebao
[Purposes] To investigate the interaction mechanism between sulfate attack and concrete damage, a coupled diffusion-reaction-damage model describing sulfate ion transport in concrete is proposed in this study.
JIN Libing   +5 more
doaj   +1 more source

Experimental and numerical investigation on the thermal performance of recycled aggregate concrete

open access: yesCase Studies in Thermal Engineering
As a green building material, recycled aggregate concrete (RAC) can reduce construction solid waste and carbon emissions. In this paper, a combination of macroscale physical experiments of thermal performance and mesoscale numerical simulations of heat ...
Libing Jin   +5 more
doaj   +1 more source

Developing a framework for performance assessment of the public long-term care system in Korea: methodological and policy lessons

open access: yesHealth Research Policy and Systems, 2020
Background Limited evidence exists on how to assess long-term care system performance. This study aims to report on the process and results of developing a performance assessment framework to evaluate the long-term care system financed by the public long-
Hongsoo Kim, Boyoung Jeon
doaj   +1 more source

Heat and mass transfer in the semi-underground double-storey squat silo: a numerical analysis during static grain storage

open access: yesCase Studies in Thermal Engineering
The semi-underground double-storey squat silo (SDSS) is innovative storage structure. The underground section of SDSS uses shallow geologic energy for low-temperature storage, indicating its potential suitability for long-term grain storage under ...
Libing Jin   +4 more
doaj   +1 more source

Paying for Long-Term Performance

open access: yesSSRN Electronic Journal, 2009
Firms, investors, and regulators around the world are now seeking to ensure that the compensation of public company executives is tied to long-term results, in part to avoid incentives for excessive risk taking. This Article examines how best to achieve this objective.
Bebchuk, Lucian A., Fried, Jesse M.
openaire   +3 more sources

Dynamic Effects Analysis of Unloading in the Center of Upper and Lower Double-story Squat Silo

open access: yesLiang you shipin ke-ji
As a new type of grain storage structure, the double-story squat silo (DSSS) can ensure the quality of grain storage, but also has the advantages of land saving, energy saving and carbon reduction, and high degree of mechanization.
JIN Li-bing   +4 more
doaj   +1 more source

Dynamic Effects of the Underground Squat Silo during Symmetic Discharging with Different Static Friction Coefficients

open access: yesLiang you shipin ke-ji
Underground squat silos can utilize shallow geothermal energy to realize natural quasi-low temperature storage to ensure the grain quality, which is a suitable warehouse for green grain storage. A combined approach of numerical simulation and theoretical
JIN Li-bing   +4 more
doaj   +1 more source

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