Plant analysis is a very promising diagnostic tool for assessment of crop nitrogen (N) requirements in perspectives of cost effective and environment friendly agriculture. Diagnosing N nutritional status of rice crop through plant analysis will give insights into optimizing N requirements of future crops. The present study was aimed to develop a new methodology for determining the critical nitr...

OBJECTIVE This study estimated the genetic parameters for body weight gain and growth curve parameter traits in Korean native chicken (KNC). METHODS A total of 585 F1 chickens were used along with 88 of their F0 birds. Body weights were measured every 2 weeks from hatching to 20 weeks of age to measure weight gain at 2-week intervals. For each individual, a logistic growth curve model was fit...

soil quality is a necessary indicator of land management. different indices are applied to evaluate farming systems, soil types and land uses based on soil quality. the slope of retention curve at its inflection point has been defined as soil physical quality index (si) but the relationships between si and penetration resistance (pr), the least limiting water range (llwr), and available water c...

We consider a combined power and rate adaptation scheme in direct-sequence code division multiple access (DS/CDMA) communications over Nakagami fading channels, where the transmission power and the data rate are jointly adapted relative to channel variations. The transmission power proportional to Gpi is allocated to the data transmission of user i, where Gi is the channel power gain for user i...

Abstract. We consider a family of directed exponential random graph models parametrized by edges and outward stars. Essentially all of the statistical content of such models is given by the free energy density, which is an appropriately scaled version of the probability normalization. We derive precise asymptotics for the free energy density of finite graphs. We use this to rederive a formula f...

SuwA, K. and MATSUSHITA, F. Open Loop-Gain of the CO2 Ventilatory Control System. Tohoku J. exp. Med., 1985, 147 (1), 97-106 We devised a method of measuring the open-loop gain for C02-ventilatory feedback control system. The procedure is to gradually increase then decrease the PIco2 while measuring Picoz and PAco2. We theorized that the gain is aPIco2/aPAco2-1. We measured this gain in 11 youn...

In many cases, the computation of a neural system can be reduced to a receptive field, or a set of linear filters, and a thresholding function, or gain curve, which determines the firing probability; this is known as a linear/nonlinear model. In some forms of sensory adaptation, these linear filters and gain curve adjust very rapidly to changes in the variance of a randomly varying driving inpu...