The spatial variability and distributions of soil physical and biological properties, and the relationships between them, are not well-characterized in agroecosystems that have been land-leveled. The objectives of this study were to characterize the short-term impacts of land leveling on the magnitudes, spatial variability, and spatial distributions of soil physical and biological properties in...

Abstract Recent advances in the developments of optical atomic clocks have enabled 10 −18 -level frequency comparisons between fibre-linked clocks. Therefore, chronometric leveling with an uncertainty on order 1 cm has become possible, based general theory relativity. Since measurement does not deteriorate increasing fibre length, applications geodesy, particularly unification height reference ...

OBJECTIVE To evaluate the effect of tibial plateau leveling on joint motion in canine stifle joints in which the cranial cruciate ligament (CCL) had been severed. STUDY DESIGN In vitro cadaver study. ANIMALS Six canine cadaver hind legs. METHODS Radiographs of the stifle joints were made to evaluate the tibial plateau angle with respect to the long axis of the tibia. The specimens were mo...

Abstract Precise Point Positioning (PPP), initially developed for the analysis of Global Positing System (GPS) data from a large geodetic network, gradually becomes an effective tool positioning, timing, remote sensing atmospheric water vapor, and monitoring Earth’s ionospheric Total Electron Content (TEC). The previous studies implicitly assumed that receiver code biases stay constant over tim...

Due to the limited erasure/program cycles of flash memory, flashbased SSDs need to prolong their life time using wear-leveling mechanism to meet their advertised capacity all the time. However, there is no wear-leveling mechanism among SSDs in RAID system, which makes some SSDs wear out faster than others. Once any one of SSDs fails, reconstruction must be triggered immediately. But, the cost o...

The goal of resource leveling is to minimize the deviation between the resource requirements and the desired resource profile to prevent problems that caused by fluctuation of required resources. It is a common problem and arises frequently in real situations and therefore has been studied numerous times. Almost in all of these studies and the resulting solutions, there exist a common element, ...

The purpose of this study was to compare the effects of active and passive lacebacks on antero-posterior position of maxillary first molars and central incisors during leveling phase. Twenty-three subjects with Class I and Class II malocclusion were treated with first premolars extraction using preadjusted appliances (MBT 0.022-inch brackets). The leveling phase was performed with stainless ste...

We describe the design, development and initial evaluation of an interactive virtual environment whose objective is to help undergraduate students learn and review the concepts and practices of differential leveling. The virtual environment, which includes realistic terrains and leveling instruments that look, operate, and produce results comparable to the physical ones, is not meant to replace...