the purpose of the present study was to examine the effects of self – control modeling , that is presenting moded to learner whenever they asked for it, on learning a timing task.twenty four right handed subjects (12 males, 12 females, aged 19-20) voluntarily participated in the study and were assigned randomly to two groups of self – control and yoked.the task was pressing the keys number 1, 4...

The effects of development and the uncertainty of a changing climate in eastern Africa pose myriad challenges for water managers along the Blue Nile. Sudan’s large irrigation potential, hydroelectric dams, and prime location within the basin mean that Sudan’s water management decisions will have great social, economic and political implications for the region. At the same time, Sudan’s water us...

While governments and individuals strive to maintain the availability of high-quality water resources, many factors can "change the landscape" of water availability and quality, including drought, climate change, saltwater intrusion, aquifer depletion, population increases, and policy changes. Specialty crop producers, including nursery and greenhouse container operations, rely heavily on avail...

Homogenous Charge Compression Ignition (HCCI) engines hold promise of high fuel efficiency and low emission levels for future green vehicles. But in contrast to gasoline and diesel engines, HCCI engines suffer from lack of having direct means to initiate combustion. A combustion timing controller with robust tracking performance is the key requirement to leverage HCCI application in production ...

Engine performance depends on two main factors of engine speed and ignition time. Ignition timing can affect engine life, fuel economy and engine power. In this paper, to study engine performance of Peugeot 206 TU3A with comparison ratio of 10.5:1 and displacement of 1361CC in MATLAB software, a two-zone burned/unburned model with the fuel burning rate described by aWiebe function was used for ...

the purpose of this study was the effect of time of training and first night of sleep on implicit (accuracy) and motor (timing) components of timed motor sequences task (tmst) enhancement. forty-eight right-handed students (19-25 years old), who have had adequate sleep quality, were divided into three equal groups according to purdue hand and fingers' fine motor skills test and simple reac...

Seasonal drought in tropical moist forest may be the cue for fine root death and turnover, and it may signal root growth deeper to access subsurface water and (or) nutrients. We examined these predictions by measuring fine root biomass ( 2 mm diam.) and the timing of root growth and disappearance in an old growth tropical moist forest on Barro Colorado Island (BCI), Republic of Panama, in the f...

The difficulty of calculating the daily water budget irrigated fields is often due to uncertainty surrounding irrigation amounts and timing. automated detection events has potential greatly simplify this process, combination high-resolution SAR (Sentinel-1) optical satellite observations (Sentinel-2) makes feasible through use a surface soil moisture (SSM) product. motivation behind study utili...

Intensive agricultural activities in the Hetao irrigation district have severely degraded local aquatic ecosystems and water quality, and Ulansuhai Lake is now the most rapidly degrading eutrophic lake in China. A better understanding of the hydro-agronomic and pollutant transport processes in the area is thus urgently needed. This study simulated monthly streamflow, total nitrogen (TN) and tot...

this study aims to better understand the effect of practice schedule and feedback providing types. in two separate experiments the contextual interference effect in bandwidth and self-control feedback conditions on relative and absolute timing learning was examined. in experiment i, the effect of contextual interference using bandwidth and self-control feedback on absolute timing learning (para...