Common use of Sampling Design Clause in Contracts

Sampling Design. The sample design applied was unchanged from what was proposed in the feasibility study (D1.1) and delivered in D1.2 as a as a georeferenced vector file. The approach is summarised as follows. The selection of sample units was based on a stratified systematic and random sampling selection (two stage approach). The first stage was implemented by applying a 20 x 20 km grid over the overall area of the AOI. In a second stage, multiple sample units were randomly selected in sequence for each grid cell based on the 500 x 500 m sub-grid as illustrated in Figure 3; resulting with 338 segments selected. 1 ▇▇▇▇▇://▇▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇/web/cscda/dataset-details?articleId=394198 The spatial distribution of the sample units over the crop and non-crop strata are shown in Figure 4 However, a visual assessment of some of the selected segments was made during the feasibility study and showed that some crops were also sometimes present in the other areas stratum. Therefore, this assessment was conducted based on available imagery from Google Earth / Bing Maps over all segments to identify, from the overall samples, the segments without any crops present. This information was used to determine the number and location of the segment to be surveyed as an input to the contract for Upande Ltd. In total out of the overall sample of 338 segments, 259 segments were identified to contain field parcels and therefore were to be surveyed. 5.1 Segment survey protocol

Appears in 1 contract

Sources: Service Contract

Sampling Design. The sample design applied was unchanged from what was proposed in the feasibility study (D1.1) and delivered in D1.2 as a as a georeferenced vector file. The approach is summarised as follows. The selection of sample units was based on a stratified systematic and random sampling selection (two stage approach). The first stage was implemented by applying a 20 x 20 km grid over the overall area of the 1 ▇▇▇▇▇://▇▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇/web/cscda/dataset-details?articleId=394198 AOI. In a second stage, multiple sample units were randomly selected in sequence for each grid cell based on the 500 x 500 m sub-grid as illustrated in Figure 3; resulting with 338 segments selected. 1 ▇▇▇▇▇://▇▇▇▇▇▇▇▇▇.▇▇▇▇▇▇▇▇▇▇.▇▇/web/cscda/dataset-details?articleId=394198 The spatial distribution of the sample units over the crop and non-crop strata are shown in Figure 4 However, a visual assessment of some of the selected segments was made during the feasibility study and showed that some crops were also sometimes present in the other areas stratum. Therefore, this assessment was conducted based on available imagery from Google Earth / Bing Maps over all segments to identify, from the overall samples, the segments without any crops present. This information was used to determine the number and location of the segment to be surveyed as an input to the contract for Upande Ltd. In total out of the overall sample of 338 segments, 259 segments were identified to contain field parcels and therefore were to be surveyed. The sampling design applied was unchanged from what was proposed in the feasibility study. No new sampling design was implemented for the second field campaign; the same sample units/segments drawn were used but only focussing on the three regions of Acholi, Teso and West Nile. 5.1 Segment survey protocol

Appears in 1 contract

Sources: Service Contract