Using a large administrative dataset from a statewide system including 34 community and technical colleges, the authors employed an instrumental variable technique to estimate the impact of online versus face-to-face course delivery on student course performance. The travel distance between each...

Vegetation plays an important role in atmospheric, hydrologic and biochemical cycles and is an important indicator of the impact of climate and human factors on the environment. In this paper, a method, which combines the empirical orthogonal function (EOF) and temporal unmixing analysis (TUA)...

An integral representation is derived for the sum of all claims over a finite interval when the claim value depends upon its incurral time. These time dependent claims, which generalize the usual compound model for aggregate claims, have insurance applications involving models for inflation and...

With globalization, especially after China's entry into the WTO, an increasing number of Chinese firms have experienced social responsibility barriers such that they lose international orders due to failure in meeting the requirements of environment, human rights or safety standard. This study...

Basin irrigation experiments were performed using conventional fertilization and fertigation methods under different inflow rate during the reviving irrigation of winter wheat. The spatial–temporal distribution of nitrogen in the basin surface water flow and soil with different fertilization...

The clogging of drippers caused by crop root intrusion has been a great concern of subsurface drip irrigation (SDI) systems. To attempt to solve the problem of root clogging of drippers, a series of field experiments were conducted in the growing seasons of 2006-2008. The goal was to investigate...

Dislocation growth and microcrystals are investigated on the {110} faces of MMTC crystals grown from aqueous solution. Growth of MMTC crystals occurs in elementary steps (~ 0.81 nm), introduced by both simple and complex dislocation sources. The bright particles with regular sizes and shapes are...

Four years of soybean experimental data observed at Daxing, North China Plain, were used to assess the ability of the AquaCrop model to predict soybean final biomass and yield. The model was parameterized and calibrated using field data on leaf area index (LAI), available soil water, soil...

Single crystals of nonlinear optical material, L-arginine trifluoroacetate (abbreviated as LATF), were grown from an aqueous solution by the low temperature solution growth method. The cell parameters of the grown crystal were determined by the X-ray powder diffraction analysis. Atomic force...

Atomic force microscopy (AFM) has been used to study the hollow cavity formation mechanisms of the L-arginine phosphate monohydrate (LAP) crystals. Hollow cavities are formed through three modes. During 2D nucleation growth, initially formed 2D cavity prevents the growth around it layer-by-layer...