Periods of calibration

This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75.

12p dianmotminh02 03-05-2024 2 2   Download

This study applied an integrated surface water-groundwater (SW-GW) model, SWAT-MODFLOW to study interaction of surface and groundwater than simulate saltwater intrusion at a regional scale in Da Nang coastal city. Model components were calibrated and validated using monthly river flow data and hydraulic head data for the 2005-2020 period and showed good agreement with observed data.

10p nhanchienthien 25-07-2023 7 3   Download

Nowadays, flowmeters are widely used in variety industrial fileds such as LPG, paint, oil refining, thermal power, etc. The reading value is used for controlling or adjusting the system. It is necessary to maintain the accuracy of those devices. Generally, those devices are calibrated periodically. Calibration is a comparision between the reading value of a device under test and that of the standard or reading value of a master device. The master devices must be already calibrated.

9p vishivnadar 17-01-2022 18 0   Download

This study presents the results of processing images of Do Son beach based on images. Camera image processing is calibrated based on real measurements of control points. Camera images are processed to capture shoreline and beach developments for the period from August 2018 to October 2019.

9p meyerowitz 25-12-2021 14 1   Download

In this paper, we discuss the current situation of AWS and ARG network in VNMHA. Next, we will explain the maintenance and cyclic calibration of the instrument proposed in this project. Furthermore, we will explain the installation plan of the ARGs to calibrate two radar data in Phu Lien and Vinh for the development of QPE. Installation of ARGs has been achieved with cooperative works of VNMHA staffs and JICA experts. So, we introduce their activities for each step from site survey to pre–operational evaluation.

23p cothumenhmong8 05-11-2020 16 1   Download

The aim of this study was to assess the impacts of the changes in upstream flow and sea level rise due to climate change on seawater intrusion in the Sai Gon and Dong Nai Rivers in Ho Chi Minh City. The HEC-RAS model was used for simulating the salinity intrusion. The results of model calibration and validation indicated that the HEC-RAS model could simulate reasonably the streamflow and salinity concentration with NSE values exceeding 0.5 for both calibration and validation periods.

6p quenchua5 14-05-2020 43 2   Download

Surface runoff estimation from a watershed is a prerequisite for surface water assessment. Hydrological models are the only tool to assess the flow from a watershed under different scenarios. The Soil and Water Assessment Tool (SWAT), a physically based hydrological model, is used modelling monthly streamflow in Altuma catchment. The model was calibrated from 1985 to 1996. Initial 3 years from 1985 to 1987 were taken as warm up periods. Then the model was validated for 7 years from 1997 to 2003.

6p kequaidan4 05-05-2020 18 1   Download

The Patapur micro-watershed situated in semi-arid region needs effective management of resources for sustainable agriculture. The Soil and Water Assessment Tool (SWAT), a semi distributed physically based model, was chosen and set up in the Patapur micro-watershed for sediment yield modeling. SWAT-CUP (SWAT-Calibration and Uncertainty Programs) was used for model calibration, sensitivity and uncertainty analysis, following the Sequential Uncertainty Fitting (SUFI2) technique.

20p kethamoi4 18-04-2020 16 1   Download

Runoff estimation is a key factor in the design of soil and water conservation structures to prevent land degradation and erosion. In the present study, the Soil and Water Assessment Tool (SWAT) model was used to estimate the runoff in Pindwara watershed situated in the Sirohi district of Rajasthan and spanning over an area of about 1428 km2 . Temporal weather data of rainfall and temperature, digital elevation models, soil data, land use land cover imagery was provided to the model as input to estimate runoff at the watershed outlet.

10p chauchaungayxua3 07-02-2020 21 2   Download

The intention of this paper is to propose PD calibration framework for low default portfolios (LDP) that allows producing smooth non-zero PD estimates for any given time horizon within the length of economic cycle. The approach produces PDs that are consistent with two main anchors – PIT and TTC PD estimates and are subject to smooth, monotonic transition between those two anchors. In practise, proposed framework could be applied to risk-based pricing of LDP portfolio deals.

10p trinhthamhodang2 21-01-2020 28 0   Download

The aim of the present study is to assess the effect of hydropower dams on the streamflow in the Be river basin using the Soil and Water Assessment Tool (SWAT). Model calibration and validation of SWAT were conducted using the historical data collected from two stream gauges, namely Phuoc Long and Phuoc Hoa, and the obtained results indicated that SWAT shows a good reliability in reproducing streamflow with R2 >0.90 and NSE>0.70 for both periods of calibration (1980-1990) and validation (1991-1993).

5p chauchaungayxua2 07-01-2020 30 1   Download

Motion blur is the result when the camera shutter remains open for an extended period of time and a relative motion between camera and object occurs. An approach for velocity detection based on motion blurred images has been implemented by the Radon transformation. The motion blur parameters are first estimated from the acquired images by using Radon transformation and then used to detect the speed of the moving object in the scene. Here established a link between the motion blur information of a 2D image and camera manufacturer’s data sheet and its calibration.

6p nguathienthan1 24-11-2019 7 0   Download

This study aimed to apply the Variable Infiltration Capacity (VIC) hydrological model for simulating the daily river flow during the period of 2005-2014 for the Red River System, Vietnam. For this purpose, the VIC-3L hydrological model forced with satellite meteorological datasets was set up for the Red River Basin at the spatial scale of 0.1o × 0.1o (~11km × 11km).

7p vinobita2711 31-05-2019 10 1   Download

The studied domain, the whole Gulf of Tonkin, extends from the coastal zone of Quang-Ninh into ThuaThienHue province and as far as Hai-Nam (China) island seawards. The model have been calibrated and verified by the observed data at six different stations for a three and seven-day periods. The results are in good agreement with the obseved data. The kinetic energy distribution was eonsidered.

13p chikychiky 26-10-2018 20 1   Download

The Siege of Gibraltar stands almost alone in the annals of warfare, alike in its duration and in the immense preparations made, by the united powers of France and Spain, for the capture of the fortress. A greater number of guns were employed than in any operation up to that time; although in number, and still more in calibre, the artillery then used have in, modern times, been thrown into the shade by the sieges of Sebastopol and Paris. Gibraltar differs, however, from these sieges, inasmuch as the defence was a successful one and, indeed, at no period of the investment was the fortress in...

223p nhokheo9 06-05-2013 54 3   Download

SWAT model was used to assess the impacts of climate change on the streamflow of Ben Hai River Basin. The daily streamflow for 1979 - 1996 and 1997 - 2006 was used to calibrate and validate the SWAT model, respectively. Nash efficiency values for the daily comparison were 0.72 for the calibration period and 0.74 for the validation period. Three scenarios were analyzed relative to the baseli ne with 28-year time series. A doubling of the atmospheric C02 content to 660 ppm (while holding other climatic variables) resulted in a 7.

7p dem_thanh 22-12-2012 56 4   Download