نتایج جستجو برای: 30cm
تعداد نتایج: 278 فیلتر نتایج به سال:
This paper investigates a template-matching approach to automatic target recognition (ATR) for SAR for the case in which positive identification of a single known target type is required. ATR schemes are necessarily supported by databases of training imagery and of particular interest in this study was the impact on performance of using a database of simulated imagery to match against real in s...
Support Vector Machine based on Time Series (SVM-TS) was applied to predict soil moisture and nitrate nitrogen (NO3--N) content. For the prediction of soil moisture, the statistical result (t-test) indicate that there is no obvious difference between predicted and observed values in 0-20cm and 20-60cm soil layers, and that SVM-TS is capable for soil moisture prediction. For the prediction of NO...
Subgrade filling of high-speed railway will cause additional settlement and deformation existing lines.In this paper,using the finite element analysis platform (Taxis 2D) considering line itself, This paper analyzes impact new old subgrade lap type layer filled lesson on implementation subgrade. The results illustrate following points:(1) Compared with different overlapping surface types, those...
Se evaluaron los parámetros agronómicos de Tithonia diversifolia por efecto cuatro alturas corte (AC) desde el suelo (AC1: 0 cm, AC2: 10 AC3: 20 AC4: 30cm), con replicas cada una, durante 55 días. Los brotes/macollo, hojas/brote y hojas/macollo fueron mayores (p<0.05) en AC1. Sin embargo, número hojas/mata brotes/mata AC2, AC3 AC4. El peso forraje verde (FV)/macollo fue mayor AC1; aunque FV/...
investigation on structure and dynamics of natural forest ecosystems is an important issue for silvicultural decisions. the aim of this study is to analysis dynamics and structure of a beech stand during 5-year period in the shast kalateh forest in the caspian region, north of iran. data were collected from a 16.9ha permanent research plot established in a natural unlogged stand in 2006. all li...
Yield and control of burrowing nematode disease Musa spp as affected by planting depth poultry manure rates soil organic amendment were studied in a 3x3x2 factorial experiment randomized complete block design with six replicates. The amendments applied two spp. was apllied at the rate 0 t/ha, 5 t/ha 10 while 30cm, 45cm, 60cm respectively. served control. result analysis showed that population d...
In the present paper, a supersonic wind-tunnel is designed to maintain a flow with Mach number of 3 in a 30cm×30cm test section. An in-house CFD code is developed using the Roe scheme to simulate flow-field and detect location of normal shock in the supersonic wind-tunnel. In the Roe scheme, flow conditions at inner and outer sides of cell faces are determined using an upwind biased algorithm. ...
In the effort to explore the subsurface of terrestrial bodies, we seek to obtain better samples from ever greater depths. Many organisations are working towards technologies that can achieve this goal whilst ensuring compatibility with the likely requirements of planetary landers in terms of mass, power, and dimensions. The Ultrasonic Planetary Core Drill (UPCD) was an FP7 funded project which ...
In order to interface a cloud of ultracold rubidium atoms with a nanomechanical device, the cloud needs to be transported a macroscopic distance of approximately 30cm. To do this, we make use of focus-tunable lenses from Optotune to electronically control the focus of an infrared laser with wavelenth of 1064nm. The focus of the laser creates a red-detuned dipole trap for the atoms. The heating ...
To evaluate a number of ideas, which, in principal, can be implemented in the ERL insertion devices design, we built and tested 30cm long pure permanent magnet (PPM) undulator model. The model had 25.4mm undulator period, 5mm fixed gap and ∼ 1.07T maximum peak field on the beam axes. For the field strength control was utilized the phase adjustment scheme in which magnetic arrays are moved longi...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید