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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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LHI Journal of Land, Housing, and Urban Affairs
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Land and Housing Institute
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Volume & Issues
Volume 2, Issue 4 - Oct 2011
Volume 2, Issue 3 - Jul 2011
Volume 2, Issue 2 - Apr 2011
Volume 2, Issue 1 - Jan 2011
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An Empirical Study on the Influence of Post-Merger Integration for Organizational Effectiveness: Focused on the Merged Corporation of LH
Moon, Hyo-Gon ; Lee, Eui-Joong ; Kim, Yong-Tai ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 315~324
DOI : 10.5804/LHIJ.2011.2.4.315
In the merged organization, the efforts of integration such as various PMI activities, etc. are exerted and the performance of PMI can be judged by evaluating the effectiveness of an organization. In this paper, the empirical analysis was conducted to see what effects of 'planned PMI activities' and 'voluntary integration efforts' have on the effectiveness of an organization which is 'Organizational Commitment', 'Job Satisfaction', 'Emotional Integration' and 'Shared Value Recognition'. The survey was made on the employees of LH, which is a representative case of public corporation advancement, and SPSS 17.0 and AMOS 17 were used for the analysis. As a result of the analysis of a structural equation model, it indicated that both 'planned PMI activities' and 'voluntary integration efforts' have direct influence on 4 indices of effectiveness of an organization respectively. In particular, it was found that 'planned PMI activities' affects 'Shared Value Recognition' the most and 'voluntary integration efforts' has the largest effect on 'Emotional Integration'. Through this study, it was verified that voluntary integration efforts of members as well as the planed formal PMI activities are also very important factor of effect on the integration performance of an organization.
Development of a Self-Diagnostic Measurement Index for ISO 26000 Social Responsibility
Lee, Myung-Goo ; Cho, Han-Jin ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 325~344
DOI : 10.5804/LHIJ.2011.2.4.325
On November 1, 2010, the release of ISO 26000 was announced. ISO 26000 does not require 3rd party verification. But even though it is a standard that is voluntarily adopted, because the international standard for social responsibility can be applied as a trade barrier or business condition between countries, it cannot be ignored. So it is clear that we need to be alerted and prepared for this. This paper offers to help with such needs through organizations by developing an index that organizations can use to understand their current situation and diagnose themselves. This paper conducts a comparative analysis between the 7 core subjects and issues of ISO 26000, the existing indexes used by national institutions and the guideline for sustainable management report, the GRI, with the goal of developing a self-diagnostic index that organizations can utilize in order to diagnose their level of social responsibility. It is divided into the 7 core subjects with 181 measurement issues. There are 7 quantitative issues and 164 qualitative issues. The core subjects, excluding governance, are each alloted 14 points, while governance is alloted with 16 points, for a total score of 100 points. This paper is significant in that it is the first index to make self-diagnostic possible.
The Analysis of Fiscal Conditions for Public Rental Housing
Lee, Jong-Kwon ; Choi, Eun-Hee ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 345~353
DOI : 10.5804/LHIJ.2011.2.4.345
This paper is focused on the sustainability of public rental housing policy. We have analyzed the general fiscal conditions of central government, the public welfare fiscal conditions, the public expenditure on rental housing, and the Korea Land & Housing Corporation (LH) financial structure. Central government fiscal conditions is controlled by the midium-term fiscal operation plan(2010~2014) and fiscal rules. And the fiscal mandatory expenditures on welfare is increased rapidly by the expansion of beneficiaries, but the fiscal discretionary expenditures particularly on public rental housing can be gradually cut down. LH, the dominant agency responsible for affordable housing, is now confronted with financial distress accruing to excessive burden for public rental housing construction. As a result this paper, we find the discrepancy between the fiscal conditons and public rental housing policies. We suggest the fiscally sustainable rental housing policy. Firstly, the construction plan should be realized reflecting the market and fiscal conditions. Secondly, the provsion and financing system of rental housing should be rebuild within the government fiscal condtions and financial ability of LH.
Time Shortening of Structural Framework of High-rise Apartment Housing for the Urgent Project Area: Focused on the Cases of Insufficient Time or Delayed Projects
Bang, Jong-Dae ; Lee, Do-Heun ; Chun, Young-Soo ; Park, Ji-Young ; Lee, Bum-Sik ; Jun, Myoung-Hoon ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 355~365
DOI : 10.5804/LHIJ.2011.2.4.355
Construction duration is very important as a factor which comprises three axises of construction management with quality and cost in construction project. In general project condition, construction duration is optimized while minimizing construction cost and securing required quality. However, in case of insufficient project time duration or delayed projects, project progress management is different from those of normal projects. These project areas need solutions to complete work within a given completion day. To time shortening the current duration of each typical floor of structural framework in apartment construction is investigated, and a basic time schedule planning for typical floor of structural framework in normal projects is planned. This study proposed 3 ways for time shortening of urgent project or insufficient construction duration project. Also, This study proposed detailed time shortening method and technical solution conditions while time is shortened.
The Determination Factor's Variation of Real Estate Price after Financial Crisis in Korea
Kim, Yong-Soon ; Kwon, Chi-Hung ; Lee, Kyung-Ae ; Lee, Hyun-Rim ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 367~377
DOI : 10.5804/LHIJ.2011.2.4.367
This paper investigates the determination factors' variation of real estate price after sub-prime financial crisis, in korea, using a VAR model. The model includes land price, housing price, housing rent (Jensei) price, which time period is from 2000:1Q to 2011:2Q and uses interest rate, real GDP, consumer price index, KOSPI, the number of housing construction, the amount of land sales and practices to impulse response and variance decomposition analysis. Data cover two sub-periods and divided by 2008:3Q that occurred the sub-prime crisis; one is a period of 2000:1Q to 2008:3Q, the other is based a period of 2000:1Q to 2011:2Q. As a result, Comparing sub-prime crisis before and after, land price come out that the influence of real GDP is expanding, but current interest rate's variation is weaken due to the stagnation of current economic status and housing construction market. Housing price is few influenced to interest rate and real GDP, but it is influenced its own variation or Jensei price's variation. According to the Jensei price's rapidly increasing in nowadays, housing price might be increasing a rising possibility. Jensei price is also weaken the influence of all economic index, housing price, comparing before sub-prime financial crisis and it is influenced its own variation the same housing price. As you know, real estate price is weakened market basic value factors such as, interest rate, real GDP, because it is influenced exogenous economic factors such as population structural changes. Economic participators, economic officials, consumer, construction supplyers need to access an accurate observation about current real estate market and economic status.
A Study on Establishment of the Basic Plan to Construct an Integrated Management System of National Building Energy
Yoo, Jung-Hyun ; Kim, Jong-Yeob ; Hwang, Ha-Jin ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 379~385
DOI : 10.5804/LHIJ.2011.2.4.379
Energy consumption of building is given a sizable portion in total national energy conservation and if current trends continues, energy conservation level will rise as level of developed country. For this reason, a basic plan is proposed for integrated management system to manage energy conservation of buildings using a link with energy information and building information. Specifically, the questionnaire investigation conducted by building energy expert is performed to determine the projects along with time schedule and demands level of management system. In addition, to investigate study on energy usage information and management situation the management architecture of energy supplier is also studied.
Evaluation of Shear Wave Velocity of Engineering Fill by Resonant Column and Torsional Shear Tests
Park, Jong-Bae ; Sim, Young-Jong ; Jung, Jong-Suk ; Park, Yong-Boo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 387~395
DOI : 10.5804/LHIJ.2011.2.4.387
According to the seismic design criteria for structural buildings in Korea, the ground is classified into 5 types based on the average shear wave velocity measured from elastic wave tests on site and seismic load applied to the structure is estimated. However, elastic wave tests in site, however, on the engineering fill, cannot be performed during the construction period. Therefore, to evaluate shear wave velocity considering field conditions, resonant column (RC) and torsional shear (TS) tests are performed and compared with various elastic wave test results. As a result, if confining pressure for the tests using engineering fill are considered properly, we can obtain similar results comparing with those of elastic wave tests. In addition, by considering the effect of maximum shear modulus and confining pressure by RC/TS tests, n values shows typical values ranging from 0.434 to 0.561 so that utilization of RC/TS tests can be useful to infer shear modulus in field.
Infill-system Development for Long-Life Housing with Durability & Flexibility: Focused on the Constructing and Evaluating Application of Mock-up House
Cheong, So-Yi ; Park, Joon-Young ; Chun, Young-Soo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 397~406
DOI : 10.5804/LHIJ.2011.2.4.397
This research aims to develop various infill-systems for practically applying to long-life housing with 100-year durability and flexibility as a strategy for realizing sustainable residential environment. Especially, the developed infill-systems & technologies were concentrated to the mock-up house applied with the standard model of long-life housing, and their in-situ applicability by a phase, experts' consultation, and questionnaire survey were also evaluated. This research was executed to divide by 3 phases. In the First phase infill-systems for a housing unit of
exclusive use area as well as a support of whole structure and infill-systems including dry wall, and windows were constructed, and their in-situ applicability were evaluated. In the Second phase vertical integration of upper and lower housing units of
exclusive use area was investigated the first in domestic for 3 housing units of
exclusive use area. In addition, various infill-systems including the horizontal expansion of
exclusive use areas were also constructed and evaluated on their in-situ applicability. In the third phase diverse performance tests and field investigation for in-situ verifying of dry Ondol, developed this research, were executed to improve their practicability. Inner dry walls were taken apart, moved and re-constructed for verifying their practicability to investigate 3R-Reduce, Reuse and Recycle-realization too.
Damage Detecion of CFRP-Laminated Concrete based on a Continuous Self-Sensing Technology
Kim, Young-Jin ; Park, Seung-Hee ; Jin, Kyu-Nam ; Lee, Chang-Gil ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 407~413
DOI : 10.5804/LHIJ.2011.2.4.407
This paper reports a novel structural health monitoring (SHM) technique for detecting de-bonding between a concrete beam and CFRP (Carbon Fiber Reinforced Polymer) sheet that is attached to the concrete surface. To achieve this, a multi-scale actuated sensing system with a self-sensing circuit using piezoelectric active sensors is applied to the CFRP laminated concrete beam structure. In this self-sensing based multi-scale actuated sensing, one scale provides a wide frequency-band structural response from the self-sensed impedance measurements and the other scale provides a specific frequency-induced structural wavelet response from the self-sensed guided wave measurement. To quantify the de-bonding levels, the supervised learning-based statistical pattern recognition was implemented by composing a two-dimensional (2D) plane using the damage indices extracted from the impedance and guided wave features.
Demolition Cost Estimation of Small-size Rental Housing based on the Quantity per Unit Method
Park, Seong-Sik ; Lee, Sung-Bok ; Shin, Sang-Hoon ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 415~427
DOI : 10.5804/LHIJ.2011.2.4.415
This study is aiming at estimating the demolition cost of deterioration housing by the rational method in order to provide for the demolition and new build project of the rental multi-family housing of LH. We investigated the actual state of demolition construction and work process of small size housing, and analysed an actual condition of estimation for the demolition cost through an advice by the expert of construction cost estimate. Furthermore, the 'estimation standard for the predetermined amount', 'estimation standard for the disposal cost of construction wastes' and precedent studies in public construction work were considered. As one of results in this study, cost accounting system, breakdown system and construction cost for the demolition work based on the standard of estimate were proposed and the predetermined amount of demolition construction for the multi-family housing with 2 or 3 floors could be produced by them. Eventually, It is estimated that the demolition cost per a multi-family housing is about 18,331,000(won) and 104,000(won) per floorage(
). To the details, the result indicated that the direct demolition cost needs about 14,339,000(won) per a multi-family housing and the consignment disposal cost of wastes needs 3,992,000(won) per one. The results of the study will be used as the fundamental data to estimate the project cost in the phase of budget establishment for demolition and new build project of the deteriorated rental multi-family housings, and also cost accounting system of demolition construction and breakdown system are expect to be used effectively at the ordering of public construction work.
The Results of the Environmental Model City Project in Japan
Kim, Nam-Jung ; Kang, Myung-Soo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 429~437
DOI : 10.5804/LHIJ.2011.2.4.429
The purpose of this research is to seek the suggestions applicable to Korean green-growth(development) policy and the realization of low carbon society by looking around the promotion policy and the process, the promotion system, main environmental policy in each city about the business for environmental model city in Japan which has been promoted in a city in order to realize low-carbon society. Japan had selected 13 local governments as an environmental model city as a part of a policy to build low-carbon society in 2008~2009, and Japan has formed information sharing between cities and provinces, the spread of information sharing and the free competition among local governments for an environmental model city through Zero Carbon City Promotion Council consisting of local governments and specialists. When examining these cases in Japan, the green-growth policy promoting currently in Korea needs to be converted from the central government-dominated policy to the local government-dominated policy and Koreaneeds to make more effort to develop software programs in order to realize green-growth social system.
Analyzing the Implement System Shift of Land Policies
Kim, Mi-Suk ; Yun, Jeong-Ran ; Park, Sang-Hak ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 439~452
DOI : 10.5804/LHIJ.2011.2.4.439
The goal of this research is to suggest the desirable directions of the land policies implement system based on analysis of existing those of Korea with the paradigm shift of land policies. We classify the land policies into land ownership, land use, land development and land management ones, and then analyze their implement system characteristics. The results are follows : firstly, the land policies implement systems have been set to large scale and rapid development. Secondly, although the systems have been specialized by their areas, the comprehensive manage systems for the harmony between development and conservation are lacking. Thirdly, the parts of the central government powers related to land use has been hand covered to local governments. And the participations of residences private companies have enlarged in the land development. Fourthly, the purposes of the information management on land use have been changed from tax collection into planned land use, but the information management has not met the need of planned land use. This study shows that firstly, the implement system focusing on large development projects might be no longer effective because of high possibility of the property prices stabilization, so moderately small ones must be found. Secondly, the system cope with the climate change and to realize the efficient utility of land is needed. Thirdly, it is necessary to take the actual measures to participate a variety of subjects. Fourthly, the system modification of the land information manage system as land policies infra is also needed to establish integral land policies.
The Business Model & Feasibility Analysis of the Han-Ok Residential Housing Block
Choi, Sang-Hee ; Song, Ki-Wook ; Park, Sin-Won ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 453~461
DOI : 10.5804/LHIJ.2011.2.4.453
This study is to derive a project model based on potential demand for Korean-style houses, focusing on new town detached housing sites that LH supplies and to test validity of the derived model and to present the direction and supply methods of the projects. The existing high-class new town Korean-style housing developments that have been considered were found to have little business value due to problems in choice of location and discordance of demand, so 6 types of projects were established through the methods of changes in planned scale, combined use, and subdivision of plot of land based on the results of survey. The type that has the highest business value among the project models was block-type multifamily houses, and this can be interpreted as the increase in total construction area leading to increase inrevenues of allotment sales due to economies of scale. The feasibility of mass housing model in which small-scale Korean-style houses are combined with amenities was found to be high, and if the same project conditions as those of the block-type multifamily houses are applied, the business value of the Korean-style tenement houses was found to be high. Besides, the high-class housing models within block-type detached housing areas are typical projects that the private sector generally promotes, and the construction cost was found to be most expensive with 910 million won per house. In order to enhance the business value of the Korean-style housing development, collectivization such as choice of location, diversification of demand classes, optimization of house sizes, and combination of uses is needed. And in order to adopt Korean-style houses in the detached housing sites, the adjustments and division of the existing planned plots are needed, and the strategies to cope with new demand through supplying Korean-style housing types of sites can be suggested. Also breaking away from the existing uniform residential development methods, the development method through supplying original land that is natural land not yet developed besides basic infrastructures (main roads and water and sewage) can be considered, and as the construction of more than 1~2 stories building is impossible due to the structure of Korean-style house roof and furniture. So it can be suggested that original land in the form of hilly land is considered to be most suitable to large-scale development projects.
A Design Criteria of Ventilation Holes to Reduce a Vapor Condensation on the Balcony Walls in Apartment Housings
Lee, Jong-Sung ; Kim, Jong-Yeob ; Hwang, Ha-Jin ; Lee, Sung-Bok ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 463~469
DOI : 10.5804/LHIJ.2011.2.4.463
LH has installed sashes to the balcony to save energy and increase residential space. Then, it is very difficult to protect a condensation of vapor on the walls in the winter time, because the space is closed and the wall surface temperature becomes very low in a balcony. We have tried to get the optimal thermal design methods to reduce the condensation on the walls. The one of the chosen method is to make holes on the walls, and then the condensation shall be reduce because the dew point temperature will be lower due to the effect of dehumidify. In this case, it is just necessary to find as like that how many holes should be perforated through the wall, what's their size, and where is their positions. In this study, a computational fluid dynamics was applied to analyze the temperature, the pressure and the velocity distribution for an incompressible flow in the balcony spaces. And field tests were also carried out to get the data to compare to the simulation results. Finally the design criteria of the ventilation holes in the balconies was suggested by analysis of the computer simulation models.
Effects of Replacement Ratio of Recycled Coarse Aggregate on the Shear Performance of Reinforced Concrete Beams without Shear Reinforcement
Yun, Hyun-Do ; You, Young-Chan ; Lee, Do-Heon ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 471~477
DOI : 10.5804/LHIJ.2011.2.4.471
This paper will describe the experimental results on the shear behaviors of reinforced concrete (RC) beam with recycled coarse aggregate (RCA). The primary objective of this research is to evaluate the influences of different RCA replacement percentage (i.e, 0%, 30%, 60%, and 100%) on the shear performance of reinforced concrete beams without shear reinforcement. Eight large-scale RC beams without shear reinforcement were manufactured and tested to shear failure. All had a rectangular cross-section with 400mm width
600mm depth and 6000mm length, and were tested with a shear span-to-depth of 5.1. The results showed that the deflection and shear strength were little affected by the different RCA replacement percentage. Actual shear strength of each RCA beam was compared with the shear strength predicted using the provisions of ACI 318 code and Zsutty'e equation for shear design of RC beams. ACI 318 code predicted the shear strength of RCA reinforced concrete beams well.
Enhancing Value of Public Construction Projects by Improving Contract Review Process
Song, Sang-Hoon ; Bang, Jong-Dae ; Cho, Gun-Hee ; Sohn, Jeong-Rak ; Jung, Sang-Ho ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 479~489
DOI : 10.5804/LHIJ.2011.2.4.479
This study aims to suggest the method to enhance the value of public construction project during contract review process considering budget reduction for project profit and public interest enhancement simultaneously. The main results of this study are as follows: (1) Current method are considered to be improved from the point that cost reduction through current method could influence performance of the object of contract without conforming to user requirements or facilities' function. (2) In order to supplement current process, the method to evaluate the variation of performance and value was established based on facility type, participants on each phase, and their requirement. (3) Case study was conducted to verify suggested method, and showed the successful application in enhancing the value of construction projects on public sector.
The Analysis on the Value of Yongsan National Park and its Economic Effect
Chang, In-Seok ; Cho, Young-Tae ; Lee, Mi-Hong ; Park, Shin-Won ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 491~501
DOI : 10.5804/LHIJ.2011.2.4.491
This study estimated economic value and benefits of Yongsan National Park, which will be constructed by financial investment of the government and objectively estimated the real value of it by understanding the value of the park from a user's view of the park. For this, the value of Yongsan National Park is divided into using value such as carbon reduction and the function of relieving urban heat island as an environmental material and non-using value based on willingness to pay of the public according to the construction of the park. As a result of the analysis, it was found out that the using value of Yongsan National Park would reach 130 million won up to maximum level of 450 million won per year, and the non-using value was analyzed to be worthy of 2,344 won per capita every month. Besides, economic ripple effect that can be expected in the process of the park construction project was analyzed to be a national policy that creates effect on production inducement of 2.6 trillion won and value added of 809.6 billion won and new jobs for 25,620 persons. Considering the value of Yongsan National Park and the effect of the project based on the result of this study, it was found that it could sufficiently secure the validity of implementing the project compared to the financial investment by the government. Therefore, it must be emphasized that diffusion strategy is necessary for national understanding and for a nation to make it understood its appropriateness widely in respect to the construction of Yongsan National Park for the successful construction of Yongsan National Park and to raise its using value in the future.
Analysis of Water Cycle Effect by Plan of LID-decentralized Rainwater Management Using SWMM-LID Model in a Low-carbon Green Village
Lee, Jung-Min ; Hyun, Kyoung-Hak ; Lee, Yun-Sang ; Kim, Jung-Gon ; Park, Yong-Boo ; Choi, Jong-Soo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 503~507
DOI : 10.5804/LHIJ.2011.2.4.503
There was a plan to develop a low-carbon green village(approximately
) in A city, a new town. Restoration of water cycle is essential for creation of the low-carbon green village. Therefore, installation plan of LID-decentralized rainwater management facilities for natural water cycle was established for creation of the low-carbon green village. Analyses on effect of the water cycle were performed in conditions of before, after developing the low-carbon green village and after installing the LID facilities(rain garden, constructed wetland, rainwater harvesting facility, etc.) using SWMM-LID model developed by EPA. Due to the characteristic of permeable area before development and significant green spaces after development, installation plan of LID facilities to restore the water cycle did not show an obvious effect. However, potential of the hydrological cycle could be seen by the installation of the LID facilities.
Development of Improved PC Stair Connections Using U-Rods
Chang, Kug-Kwan ; Seo, Dae-Won ; Chun, Young-Soo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 509~516
DOI : 10.5804/LHIJ.2011.2.4.509
Compared with the traditional RC system, precast stairs can save construction time, reduce the cost of concrete casting, etc. This paper focuses on an investigation of improved continuous longitudinal joint details for PC stair systems. The performance of the precast concrete stair connections subjected to displacement control cyclic loading is compared with that of the monolithic connection. The developed connection is composed of U-rods and clamp joint metals. This paper proposes precast stair connection with improved structural performance and experimentally evaluates the structural performance of the proposed joints in terms of maximum load, displacement ductiliy, strain, crack and failure modes.
An Assessment of Environmental Carrying Capacity by Analyzing the Emission and Concentration of Urban Atmospheric Pollutants
Lee, Kwang-Ho ; Jeong, Yeun-Woo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 517~528
DOI : 10.5804/LHIJ.2011.2.4.517
Indiscreet developments cause environmental problems in major cities of Seoul Metropolitan Area. Among the environmental problems, the air pollution leads the citizens' physical and economic damages. Therefore, it needs to predict how much air pollutant which is emitted from human activities can be carried by urban environment, then to examine the reasonable level of urban development This study assumed that the air pollution is represented differently by the amount of emission. With the assumption, the acceptable air pollutant emission which keeps the air quality under the environmental standard is estimated, then the proper population is calculated in the case of Gwacheon, Gyeonggi. The result is as follow: First, air pollution concentrations of CO,
which are estimated by using IDW interpolation of GIS don't excess the air environmental standard. Second, the result of correlation analysis between air pollutant emission and air pollution concentration shows that CO and
has high correlationship with total source of pollution and linear source of pollution, and
with linear source of pollution. Third, the results of regression analysis show that the acceptable population is bigger that the real population in the case of CO, and with the estimation of
, the current population in the urban center and boundaries where the residential and commerce land uses are concentrated is bigger than the acceptable population. The consequence of this study is that the estimation of carrying capacity can suggest the acceptable human activities which keep the air quality under the environmental standard. This can leads the sustainable urban development by control the human activities under the carrying capacity of urban environment.
A Comparative Study on the Business and Financial Structure of Public Housing Agencies in Asia: Korea, Japan, Singapore and Hong Kong
Kim, Yong-Tai ; Park, Shin-Young ; Cho, Seung-Youn ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 529~538
DOI : 10.5804/LHIJ.2011.2.4.529
Recently, one of the critical issues in Korea is the huge debt and future role of Korea Land and Housing Corporation. In this regards, the purpose of this study is to get implications from other public housing agencies in Asian countries such as UR of Japan, HDB of Singapore and HA of Hongkong. The changes of housing policy since 1960s, business and financial structure of housing agencies in each nation are investigated and compared. As a result, some policy directions can be proposed as follows : review of current mass housing program, relaxing qualifications for public rental housing, promotion of urban renewal projects, reinforcing cooperation with private sector and local governments, more government's support to LH's financing and loss from businesses for public interests and re-evaluation of LH's debt. The contribution of this study is that suggestions to improve housing policy and to alleviate financial problem of LH are based on the actual conditions of public housing agencies in Asian countries where the housing policy implementation system is similar to Korea, not on the theoretical basis.
Development on the Urban Management Pollcy by the Types of Subway Station Areas: the Case of Seoul, Korea
Kim, Ok-Yeon ; Lee, Joo-Hyung ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 539~552
DOI : 10.5804/LHIJ.2011.2.4.539
This research thesis measured potential housing development of 250 'subway station areas' around Seoul Metropolitain Region, with the use of added weighting and data of each indicator based on AHP. The analysis was conducted on the ranking of the development of 'subway station areas' on the basis of measurement results of potential housing development along with the analysis on characteristics of 'subway station areas' in daily life zone. Cluster analysis-oriented analytic measurement results suggested that 'subway station areas' in Seoul Metropolitain Region can be grouped into five clusters: Cluster 1 and Cluster 2 were populated with 'reservation areas' for outside and inside urban development, respectively scoring low all in housing development pressure and capacity. Cluster 3 was populated with 'development maintenance areas', scoring low in housing development pressure but high all in housing development capacity. Cluster 4 was populated with 'development facilitation areas', scored high all in housing development pressure and capacity. Cluster 5 was populated with 'development control areas' scoring high in housing development pressure but low in housing development capacity.
Slip Failure Strength of Infilled Concrete with Reinforced PHC Pile by One-Cutting Method
Chun, Young-Soo ; Sim, Young-Jong ; Park, Jong-Bae ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 553~558
DOI : 10.5804/LHIJ.2011.2.4.553
Existing method protruding strands that are embedded in PHC pile to connect pile head and foundation slab shows poor constructibility. As this causes crack and damage in pile head and casualties often occurs in construction site during the work, alternative method called one-cutting method, in which pile above the ground surface and strands embedded in pile are completely cut and pile head is reinforced with rebar for connection with foundation slab, is currently adopted. However, the capacity of details for these methods are not mechanically proved. In this study, in order to suggest proper details of reinforcement for one-cutting method, failures due to lack of shear resistance between infilled concrete and PHC pile are analyzed through experiments and embedded depth with infilled concrete inside PHC pile is suggested. Assuming that slip failure strength is 0.4MPa, which is obtained from experiment conservatively, to have rebar yielded before slip failure, minimum depth of infilled concrete for PHC 450 and PHC 500, need to be 600mm above, and for PHC 600, 1,000mm above.
A Study of on the Method to Select Manufacturing Activities Sensitive to Regional Characteristics by Analyzing the Locational Hierarchy
So, Jin-Kwang ; Lee, Hyeon-Joo ; Kim, Sun-Woo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 559~568
DOI : 10.5804/LHIJ.2011.2.4.559
This study aims at listing up those manufacturing activities sensitive to regional characteristics by analyzing locational hierarchy designed on the urban rank-size rule. This locational hierarchy by manufacturing activities is expected to provide a ground for the proper supply of an industrial complex. The analysis of the locational hierarchy by manufacturing activities can work as a method of observing the characteristics of the distribution of location for each economic activity by analyzing the trend in the change of manufacturing location. Consequently, it can be used to determine the appropriate manufacturing activities for the industrial complex of a particular region. Here, the locational hierarchy is analyzed depending on the base of the basic local government such as Gun(district level) and Si(city level), and manufacturing activities are categorized by Korea Standard Industry Code. Those activities demonstrating growth pattern are Manufacture of Electronic Equipment(KSIC 26), Manufacture of Medical Precision Optical Instruments Watch(KSIC 27), Manufacture of Motor Vehicles (KSIC 30, 31), etc. With proper infrastructures, these activities can be located everywhere. Those sectors on the decline pattern in the locational hierarchy can be summarized as Manufacture of Tobacco Products(KSIC 12), Manufacture of wearing apparel Fur Articles(KSIC 14), etc. Those sectors scattered widely in the locational hierarchy are Manufacture of Food Products(KSIC 10), Manufacture of Coke Petroleum Products(KSIC 19), Manufacture of Chemical Products(KSIC 20), Manufacture of Electronic Equipment(KSIC 26). These particular manufacturing activities can be operated in those regions in a sufficient supply of unskilled workers regardless of proper infrastructures. Those activities that have a tendency to reconcentrate on larger cities are Manufacture of Textiles(KSIC 13), Manufacture of Wearing Apparel Clothing Fur Articles(KSIC 14), Manufacture of Other Transport Equiptmen(KSIC 31). In most cases, these sectors tend to favor their existing agglomerated areas and concentrate around large cities. Therefore, it is inefficient to promote these sectors in small or medium-sized cities or underdeveloped regions. The establishment of developmental strategies of an industrial complex can gain greater competitiveness by observing such characteristics of the locational hierarchy.
Structural Analysis Methods for RC Building Demolition Work under Heavy Equipment Loading
Park, Seong-Sik ; Lee, Bum-Sik ; Park, Ji-Young ; Kim, Hyo-Jin ; Sohn, Chang-Hak ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 4, 2011, Pages 569~575
DOI : 10.5804/LHIJ.2011.2.4.569
In domestic mechanical demolition work against RC building, unsuitable selection and loading of heavy equipment have led to occasional accidents such as collapse of structural members during the work. Therefore, proper analysis technique to easily decide allowable equipment load on the structure is needed at the planning stage of mechanical demolition work. In this paper, performing loading test and elastic analysis against 4-story building at full scale, we confirm appropriateness for allowable load of equipment on RC structures, which was suggested in previous study, and suggest structural analysis method that can evaluate safety of RC building during the mechanical demolition. The suggested method can be effectively utilized to improve work efficiency through safety of mechanical demolition work against RC building and proper management of equipments.