a. 일선판매망(GRASS ROOTS)
제품이나 서비스를 구입하고 사용하는 고객과 직접 접촉하는 일선 판매망(grass roots)혹은 판매요원(sales forces)의 개별 예측치 들을 합성하여 예측치를 구하는 방법
ex)편의점 중국집 등등
* 지역별 특성이 다소 다르게 나타날 수 있기에 해당지역의 사회적 특성
제 1 장 인과관계 추론과 집단설계
☞ 과학적 연구조사에서 인과관계를 결정하는 세 가지 기준이 있다.
①. 독립(원인)변수와 종속(효과)변수는 경험적으로 서로 상관관계(공변관계)를 갖고 있어야 한다.
②. 독립변수는 시간상으로 종속변수보다 선행하여 발생해야 한다.
③. 두 변수간의 관측된
1. Introduction
1.1 Motivation and Purpose
The more our life is affluent, the more the interest in residence is increased. We have a lot of criteria to choose residence. For example, our criteria for selecting the residence are the child education, commuter time, proximity of commercial businesses and proximity of cultural and sports facilities, etc. Among all areas that meet these criteri
2. Analysis of project
1) Course of pipeline from knock-out drum on the first floor to storage tank on the third floor.
It is ideal to design pipelines using straight line for economic feasibility and efficiency but that is impossible for the reason of structure of plant. So It is necessary to inspect the structure of plant.
2) What kinds of pipe do we decide?
Considering economi
Laboratory Monitoring of Patients with HIV Infection
Patients with CD4+ T cell counts <200/L are at high risk of disease from P. jiroveci, while patients with CD4+ T cell counts <50/L are at high risk of disease from CMV, mycobacteria of the M. avium complex (MAC), and/or T. gondii. Patients with HIV infection should have CD4+ T cell measurements performed at the time of diagnosis and every 3&