2021.06.08. Spatial Big-data Analysis (GIS) Presentation Review of public-house supply plans through ArcGIS –Focused on Seoul and Millennial Generation-0 1 Project idea │ Background and Object Data Basemap : Seoul by Gu Number of workers by Gu Supplied public-houses for Millennial Generation (- 2019) Public-house supply plan for Millennial Generation (2020 - 2024) Data limitation Data preprocessing Housing instability of young people and newlyweds (mainly millennials) tends to increase in South Korea As a solution, the government plans to continue supplying public housing Map analysis of the location where the supply of public housing is necessary based on the number of jobs and houses Comparative analysis with the government plan Jobs-Housing Balance by gu = number of workers / number of houses worker: Number of workers (not only Millennials) houses: Number of supplied public houses for Millennial Generation Increase Ratio of supply houses by gu = planned / (planned + exist) planned: Number of public houses for supply (2020 - 2024) exist: Number of public houses already supplied (- 2019) For the calculation of the number of workers, all age data is used because the data by age could not be obtained0 2 Research outcome │ (Fig.1) Number of workers by gu (Fig.2) Jobs-Housing balance with coverage circles Number of worker map The location with the most jobs is Gangnam- gu (698,840), followed by Seocho-gu , Songpa-gu , Jung- gu , and Yeongdeungpo-gu North side tends to have less jobs Job-Hosing Balance Map According to Fig. 2, Gwangjin-gu (610.17) has the largest number of jobs, followed by Jongno-gu , Yeongdeungpo-gu , Yongsan- gu , Geumcheon-gu , and Jung- gu . The results of Fig.1 and Fig.2 are very different Job-Hosing Balance is more important for improving the quality of life of citizens Therefore, locations with high Job-Hosing Balance and surroundings are defined as requiring additional public-houses Coverages are assumed such as Red (10km), orange (8km), yellow (5km) circles (hereinafter, coverage circle)0 2 Research outcome │ (Fig.3) Supply plan in 2020-2024 (Fig.4) Increase ratio of supply plan with circles Analysis Fig.4, coverage circle contains most of the planned amount (light blue-dark blue). It seems that the government has reflected the job-housing balance in its supply planning In particular, the increase rate in Yongsan- gu , where the most coverage circles overlap, is the largest (four circles include Yongsan- gu ) When planning additional supply in the future, additional supply is required in jung-gu and adjacent areas Supply plan of houses in 2020-2024 Fig.3, Gangdong-gu has the largest supply plan of additional housing in 2020-2024, followed by Gangnam- gu and Guro-gu . Fig.4, On the other hand, Yongsan- gu had the largest increase rate , followed by Gangdong-gu , Guro-gu , Geumcheon-gu , Yeongdeungpo-gu , Jung- gu , Gangnam- gu , Songpa-gu , and Mapo-gu . Fig.4 includes coverage circles of Fig.2@ * Reference │ Basemap : e-class Number of houses: https://data.seoul.go.kr/dataList/10996/S/2/datasetView.do Number of workers: https://data.seoul.go.kr/dataList/104/S/2/datasetView.do Supply housing plan: https://www.myhome.go.kr/hws/portal/sch/selectAnnualSupplyView.do Supplied public housing: https://www.myhome.go.kr/hws/portal/sch/selectRentalHouseInfoListView.do{nameOfApplication=Show}
사업현황 파악 및 기초자료 수집01│흑석뉴타운 조성 현황• 1구역(미정), 2구역(미정), 3구역(이주 및 철거), 4구역(완공), 5구역(완공), 6구역(완공), 7구역(완공), 8구역(완공), 9구역(시공사 선정완료), 10구역(사업취소), 11구역(미정)01│캠퍼스 타운 조성 계획 및 목표 재정의캠퍼스타운 조성 사업• 청년 대학생 및 지역주민 인구 창업공간 및 지역상권에 24시간 교류하는 활력공간 동작구 캠퍼스 타운 조성에 지역별 리스크 관리를 통해 일조• 메트로 9호선 공간 무상 제공• 중앙대 창업 공간 운영• 서울시 동작구 행정 지원
01│ 스마트시티 혁신성장동력 프로젝트- PersoanlMobility (PM) 스마트시티-퍼스널 모빌리티의 확대 퍼스널 모빌리티의 개념: 생활권 내부에서의 근거리 이동을 위한 Free-floating 기반의 개방형 초소형 PM을 공유하는 서비스로 전기자전거, 전동킥보드, 지자제 공유자전거 등의 공유 세종시: Mobility, 도시생활의 편리함을 유지하면서 도시 내 소유자동차 수 및 운행 차량수를 점진적으로 1/3 수준으로 감소 서울시: 공유 모빌리티를 활용한 대중교통 접근성 개선퍼스널 모빌리티의 운영 전기로 동작하기 때문에 방전된 전동킥보드를 수거하여 충전하고 수요 밀집 지역에 재배치하는 운영이 필수적 고장나거나 파손된 전동킥보드를 수거 수거과정은 외부 물류업체에 맡기거나 화물차를 통한 직접 수거를 병행02│시민의 First and Last Mile 편리성 강화연구목적• (시민 편의성) 대중교통과 스마트 모빌리티의 연계를 통한 시민의 First and Last Mile 편의성 강화• (운영사 편익) 정부지원금이 투입되는 만큼 민간 수거, 재배치, 충전, 고장수리 등 업무에 대한 운영사의 운영효율화 필요교통수요를 고려하여 퍼스널 모빌리티의 수거 및 재배치를 위한 최적의 충전센터 위치 결정 필요
Team Project- Specific Gravity & Sieve Analysis -Specific Gravity (KSF 2308)1. Introduction1) Specific gravity of soil is average value of soil particle that have a variety of size composing minerals. And it is impoart to decide void ratio and a degree of saturation of soil. In addition finding out composition minerals or hardness , in this case, specific gravity of soil play an important role.2) Specific gravity of soil is important feature. void ratio, degree of saturation, wet unit weight and dry unit weight. also it is important factor of ground subsidence or earth pressure.3) Specific gravity test is ruled by the Korean Industrial Standard KSF 2308, mechanical analysis of soil.2. Apparatus of test1) Pycnometer :capacity 50㎖ or 100㎖ with stoper2) Balance :capacity over 200gf, sensitivity 0.01gf3) Thermometer4) Distilled water5) Hopper6) Alcohol lamp7) Sieve (NO.10)3. Experiment’s procedure1) Prepare the soil sample(1) Dry the soil in dry oven for 24 hours (105±5℃)(2) Make dried soieterT' = Water temperature before heatingT = Water temperature after heating and coolingWater density and correction coefficient KTwater densityKTwater densityK41.0000001.0009180.9986250.999550.9999921.0009190.9984350.999360.9999681.0008200.9982340.999170.9999301.0008210.9980220.998980.9998771.0007220.9978000.998790.9998091.0007230.9975680.9984100.9997281.0006240.9973270.9982110.9996341.0006250.9970750.9979120.9995261.0005260.9968140.9977130.9994061.0004270.9965440.9974140.9992731.0001280.9962640.9971150.9991291.0000290.9959760.9938160.9989720.9998300.9956780.9965170.9988040.9997at P1)Wa'=145.6(g), Wf =37.6, T'=17, T = 23∴Wa =145.7at P2)Wa'=158.1(g), Wf =45.5, T'=17, T = 23∴Wa =158.2at P3)Wa'=134.4(g), Wf =37.6, T'=17, T = 21∴Wa =134.52) Determine the specific gravitiy of soil particle at TGt = specific gravity of soil particle about water at TWa = Weight of pycnometer and water at T after correctionWb = Weight of master mass (pycnometer + water + soil sample)Ws = Weight of dry soil saific gravity. But soil's specific gravity is being used to measure the void ratio and degree of saturation that have an effect on stability(4) Our soil sample's specific gravity of soil partice is 2.66 (When degree is 15C). We can know specific gravity about general sorts is as in the following table. but it is difficult to find the our soil sample's feature according to Discussion(2).SortSpecific gravitySand2.65~2.68Gravel2.65~2.68Clay(non-organic)2.68~2.72Clay(organic)2.62~2.66Silt (Fine-grained)2.65~2.688. Error analysis1) p1, p2, p3 each error is 0.0058, -0.0087, 0.0030 with an error tolerance of within 0.03.2) Error factor 1 : We Can't drain off the all the liquid in pycnometer. and then we use the pycnometer to test just as it is.3) Error factor 2 : The measurement value of specific gravity is sensitive about air bubble. so, we can think the error factor that remained bubble in pycnometer that is not eliminated all. It is occurred by heating the pycnometer not enough or process tribution curve7) Determine the uniformity coefficient & coefficient of gradation4. Measurement dataSieve analysisWeight of pan127.2Weight of soil sample before test and pan747.0DateFriday, Marth 29th, 2013Sieve No.diameterWeight of sieveweight of remained soil and sieve44.750454.1476.1102.000470.1568.9200.850417.3580.7400.425380.4493.4600.250351.5421.21000.150353.8470.02000.075348.8377.8Pan-266274.35. Calculate1) Determine the mass of soil remained on each sieve by subtract (M1, M2, M3,...M8)2) Determine the total mass of remained soil on each sieve (∑M=M1+M2+.....+M8)3) Compare the weight of total mass of remained soil and weight of soil sample before test.4) Calculate the weight of soil passing the ith sieve by using∑M-(M1+M2+....+Mi)5% Determine the percent of soil passing the ith sieve by using6. Determine the Uniformity coefficient and coefficient of gradation,Cu = Uniformity coefficientCg = coefficient of gradationD10 : diameter in the particle-size distribution curve correspondiSPPassing % of sieve No.200below 50%Passing % of sieve No.40Over 50%Percentage of fine grains Contents(Passing % of sieve No.200)Below 5%Sand has bad particle size distribution, OR Sand mixed gravel4) According to particle size distribution curve, there are two places that are concave point is confirmed. Accordingly we can assume that soils are mixed with two or more types of sand and gravel.8. Error analysis1) It is possible to assume the error factor due to the loss of dirt in the process of transferring the sieve of pan.2) Sieve is blocked by soil particles in part by the previous experiments. we can assume the occurrence of this error.3)We can assume the occurrence of the error due to soil lost as dust, it happens during shake to sieve.4) We can assume the occurrence of errors in the process of calculating among measured values.9. ConcludeAs a result of the Sieve analysis, we can find out coefficient of gradation(0.58), Uniformity coefficient(6.45) of soil sample. Also, It is assumve.