Some Examples of Roof or Wall Planting Works and Temperature Measurement of Planted Vegetation

In this paper the authors presented some examples of roof or wall planting works in Nagasaki Prefecture and other places including Fukuoka City, and described the result of temperature measurement of vegetation used for roof or wall planting. As a result it was made clear that the temperature of vegetation was relatively low in comparison with those of other materials on roof and bare wall surface. This made us confirm that roof or wall planting may contribute to the reduction of heat radiated from the earth surface

Liquefaction Damage of Harbor Facilities during the 1995 South Hyogo Earthquake

The 1995 South Hyogo Earthquake took several thousand of lives and destroyed momentarily infrastructures which were designed to perform for a long time. Particularly damages of harbor facilities including Kobe Port were almost completely destroyed. Geological hazards occurred on a large scale at many areas too. This paper describes results of field surveys about damages of harbor facilities and liquefactions mainly in Kobe City, and discusses some about the mechanism and the countermersure

The Effect of Coal Ash on the Strength Parameters of Clay

Coal ash is considered one of the most serious challenges to the 21st century due to its huge accumulation inside or around the power generating plants. From this point of view the authors have carried out a series of tests in an attempt to improve the engineering behavior of Ariake clay by using coal ash. Ariake clay was mixed with different amounts of coal ash within the range of 3-12% of the clay wet weight. These tests are sedimentation test, tri-axial compression test, Oedometer test, and consistency limits test. These tests are considered very important in determining the behavior of the treated clay as an approach to further application of coal ash in soft ground improvement. As a result of this it is apparent that coal ash can be successfully used in stabilizing clay

ESTIMATION OF THE WILLINGNESS TO PAY FOR PRESERVING PUBLIC PARKS IN NAGASAKI CITY BY USING CONTINGENT VALUATION

The main objective of the study is to estimate the willingness to pay (WTP) for conserving public parks in Nagasaki City. In doing so, contingent valuation method is applied. The results of the study showed that the residents of the Nagasaki City are willing to pay in total 920 million yen (5,225 yen per household) for preserving the public parks in the city. The negative relationship between the persons visiting the public parks and the WTP, revealed from the multivariate analysis indicates that, non-use value of public parks in Nagasaki City is also very high. Finally, based on the findings of the study, some policy guidelines were given for development and maintenance of public parks in Nagasaki City, which will in turn enhance its livability

THE CHOICE OF ELICITATION METHODS IN CVM AND THEIR IMPACT ON WILLINGNESS TO PAY IN ENVIRONMENTAL ASSESSMENT

The choice of the question format constitutes one of the major exercises in contingent valuation method (CVM) studies. However, although various methods are available, none of these are considered to be perfect. This paper aims to examine the effects of varying the elicitation methods on willingness to pay (WTP) of the respondents by summarizing the findings of two environmental assessment case studies conducted on Nagasaki City. Three types of elicitation methods are applied in the case studies: open-ended, single bounded dichotomous-choice and double-bounded dichotomous-choice questions. Results indicate that free riding and lack of base for answering question leads to underestimation of WTP under open-ended format. Whereas, the anchoring effect is presented in dichotomous choice format where the bid level provided raises the probability of accepting it. Based on the drawbacks of both the methods, recommendations are provided for using a new format of question to avoid the demerits

Ageing Problems of Nagayo Newtown in Nagasaki Prefecture, Japan

The General Assembly of the United Nations decided to observe the year 1999 as the International Year of Older Persons (IYOP99). While ageing is progressing worldwide, the increase rate of an ageing rate of Japan progresses rapidly. An ageing problem is being brought caused by the increase in the ageing rate. Even if an ageing problem is said with a word, it covers lot of problems. In addition, ageing problem is varying in the area. In this research, Questionnaire investigation was carried out at a Newtown in Nagasaki, Japan. A result of this investigation, the maintenance of the road and the traffic environment inside on Newtown might not be in maintenance status for elderly. So it obstructed to the elderly. In addition, software side like resident council and medical service has some problems for the elderly

Resident Consciousness Investigation on Ageing Problem of Some Newtowns around Nagasaki City

A large-scale population inflow to the urban area in Japan since 1950\u27s, under the atmosphere of reconstruction, has generated the house shortage problem in the urban areas. This situation provided serious problem of housing shortage in urban area and in order to solve the problem, Newtowns were constructed in the skirts of large cities. Nowadays, however, the ageing of the residents is increasing and various problems occur in Newtowns. Although local environment was planned in the Newtowns, environmental improvement, corresponding to the ageing, will be necessary in the future Newtowns. In this study, resident consciousness investigation was carried out in the three Newtowns around Nagasaki City to identify the problems proceeding in Newtowns and to suggest how to improve the infrastructures in the Newtowns

The Difference between Stated and Measured Travel Data and Their Impact on Environmental Valuation by Travel Cost Method

The main purpose of this study is to assess the reliability of the respondent’s own estimation of the travel distance as a base for calculating travel costs. In order to attain this objective, we have compared the respondent’s stated distances with that of the measured ones, by using environmental valuation survey data conducted on Huis Ten Bosch (HTB). As evaluation tools, scattered diagram plotting, correlation analysis and t-tests of the differences between two means have been used. The findings of the study suggests that, measured distance data might be used for travel costs calculation, as the stated distances are prone to be distorted as the distance from respondent’s residence to the recreational site increases. On the other hand, the significance of the stated distance data should not be disregarded in TCM studies, as it reflects the length of distance felt by the respondents and would provide an important base for estimating recreational benefits

Thermal and Mechanical Properties of Glass Cullet Mixed with Asphalt as Low-Exothermic Pavement Material

The asphalt pavement contributes to the heat island phenomenon of the city. Thus in order to decrease the temperature of asphalt pavement and to utilize glass cullet as a recycling material as an aggregate, some tests were carried out. In this study the specimen in which the cullet was entrapped in cold-laid paving materials and non-mixing specimen are made respectively, and the surface temperature of each specimen is measured by the thermal video camera. A set of tests have been conducted and results indicated the clear effect of glass cullet in reducing the radiation temperature of asphalt pavement

Land Cover Change of Nagasaki City Associated with Natural Disasters by Using Remote Sensing Techniques

Natural disasters are inevitable and it is almost impossible to fully recover the damage caused by the disasters. However, it is possible to reduce the potential risk by developing disaster early warning strategies and to help in rehabilitation and post disaster reduction. Remote sensing technology has efficiently proven its usefulness, not only monitoring the disastrous events, but also to provide accurate and timely information well before the occurrence of disaster. This paper describes an analysis of land cover changes between 1986 and 2000, that have occurred in Nagasaki City over the past few decades. For this purpose, Nagasaki City was studied using Thematic Mapper (TM) data acquired by Landsat-5. Common and reputable unsupervised classification method, Iterative Self-Organizing Data Analysis Technique (ISODATA) is used. From the over all result of study area, it is visible that regelated area is decreasing and urban land is increasing. This trend is especially clear in detailed analysis of typically developed areas as Tagonoura, Koebaru and Kaminoshima