The Effect of Environmental Instruction on Environmental Attitudes of University Students

Woo, Hyung-Taek The Korean Environmental Sciences Society 2000 Environmental sciences Vol.4 No.3

The effect of environmental instruction on students\` environmental attitudes was studied in two environmental classes and one business class of university undergraduates. Changes in students\` environmental attitudes were assessed from a questionnaire survey administered before and after exposure to a 16 week course. The results indicated statistically significant differences in students\` attitudes toward the environment between the pretest and the posttest. The two environmental classes had the positive effect and the students exhibited more environmentally favorable attitudes. Accordingly, this study confirmed the positive effect of environmental instruction on attitudes toward the environment at a university level.

Biological Assessment of Blasting Noise and Vibration in Residential Area: II. Damage of Local Ecosystem

Choi, Won-Chul,Seo, Seok-Jin,Sung, Han-Ki The Korean Environmental Sciences Society 1998 Environmental sciences Vol.2 No.2

This area is plant-geographically located at the Temperate Subtropical Zone and Evergreen Broad Leaf Zone which is included in the sea of southern area of the Korean Peninsula. The Japanese black pine is the most common tree in this area. The sorts of trees that are living in this area Camellia, Alder, Oak, Acorn. It is reported that this area is located at the Evergreen Broad Leaf Zone of Korean Peninsula that is living in the southern sea. The construction place was originally a grassy place. About 40 familly 100 species different plants were living at this area. The most common animals were the Rodents and the most common birds were the Colombiformes.

Photodegradation of Rhodamine B in $TiO_2$ suspension

Na, Young-Soo,Kim, Ji-Hye,Lee, Tae-Kyung,Lee, Song-Woo,Song, Seung-Koo The Korean Environmental Sciences Society 2001 Environmental sciences Vol.10 No.3

In recent years, rapid technological advances in the textile and dyeing industry have yielded benefits to society but have also generated new and significant environmental problems. The treatment alternatives applicable for the removal of color vary, depending upon the type of dye wastewater Advanced oxidation processes are considered to provide more permanent merits. One of these oxidation treatments attracting much attention is photocatalytic oxidation, which uses TiO$_2$ due to its non-toxic, insoluble liquid as well as a highly reactive nature under UV irradiation. This study sets out to demonstrate the effect of photocatalyst dosage, dye concentrations, pH and light intensity on color removal efficiency under aerobic conditions. The results of this study show Rhodamine B(RhB) was not decolorized when a dye solution was exposed only to air or treated by TiO$_2$ only In the presence of both TiO$_2$ and UV light, however, the presence of RhB decreased up to 95 % within 60minutes. The more addition TiO$_2$ and the more diluted dye solution, showed a higher removal rate.

Marine Environmental Change Due to Waterfront Development

Lee, Moon-Ock,Lee, Sam-No The Korean Environmental Sciences Society 1999 Environmental sciences Vol.3 No.1

A two-dimensional numerical experiment and field observations were conducted to evaluate changes in sea water movement and the water quality environment related to comprehensive projects of waterfront development around Kwangyang Bay on the south coast of Korea. Tidal flow velocities, especially in the western part of the bay, were considerably slower as a result of the development projects. Accordingly, the seawater exchange ratio reduced from 38.7% to 26.3%. The impact of dredging work on the water quality environment was much stronger than expected. Furthermore, after the completion of the industrial parks and container-exclusive wharfs, COD from the waste water treatment plant will be dispersed extensively into the adjacent water at a level of less than 0.1 mg/l for up to 142.5 $\textrm{km}^2$. Therefore, consistent monitoring and management of the water quality environment is strongly recommended.

Environmental Assessment of Blasting Noise and Vibration in Residential Area

Kim, Jang-Ho,Seo, Seok-Jin,Son, Joo-Young,Sung, Han-Ki,Park, Dong-Hoon,Kim, Suck-Taek,Park, Won-Chul The Korean Environmental Sciences Society 1999 Environmental sciences Vol.3 No.1

An investigation of noise and vibration caused by the reclamation of the foreshore around J village resulted in noise measurements of 56-84 dB at the first point, 62-81 dB at the second point, and 68-78 dB at the third point. These measurements were higher than the standard level of environmental noise that is 55 dB at noon and 45 dB at night. The vibration measurements were 61-83 dB at the first point, 63-88 dB at the second point, and 58-77 dB at the third point. These measurements were also higher than the standard level of environmental vibration that is 60 dB at noon and 54 dB at night. The measurements of scattering dust were 80 $\mu\textrm{g}$/$\textrm{m}^3$ at the first point, 120 $\mu\textrm{g}$/$\textrm{m}^3$ at the second point, and 169 $\mu\textrm{g}$/$\textrm{m}^3$ at the third point. These measurements were lower than the standard level of environmental dust that is 300 $\mu\textrm{g}$/$\textrm{m}^3$/day. Although the maximum vibration level was higher than the standard level of environmental vibration, it had no influence on the construction.

Emergy evaluation perspectives on the natural environment and economy of Seoul

Kang, Dae-Seok The Korean Environmental Sciences Society 2001 Environmental sciences Vol.10 No.1

An emergy evaluation of the natural environment ant economy of Seoul revealed that Seoul used 1.27 E23 sej/yr of emergy in 1997. The emergy input from the Han River accounted for most of the renewable emergy sources. Emergy imported from foreign countries and other parts of Korea accounted for 97% of the total emergy use in Seoul in 1997, revealing that the economy of Seoul is more dependent on outside emergy sources than for the entire Korean economy. The emergy use per unit area(2.09 E14 sej/$m^2$/yr) was higher than that for the entire country or Pusan, whereas the emergy use per capita(1.22 E16 sej/person/yr) was lower than that for the entire country or Pusan. These results reflect the overcrowded conditions in Seoul where about one fourth of the Korean population now live. They also seem to indicate a lower living standard in Seoul than the average in Korea. The quality of living in Seoul could also be judged by a high environmental loading ratio and a low sustainability index. All there indices suggest that people in Seoul live under a higher environmental stress than the average person in Korea.

Study on Redox State of Environmental Pollutant

Choi, Chi-Nami,Yang, Hyo-Kyung,Na, Eun-Jung The Korean Environmental Sciences Society 2001 Environmental sciences Vol.10 No.2

The chemical behavior and properties related to the redox state of environmental pollutants were investigated using electrochemical methods. Measurements were taken of variations in the redox potential and cyclic polarization current. The results established the influence of various factors, including concentration, temperature, salt, and pH, on the redox potential and current. These factors were determined to effect the result of the redox reaction. Optimum conditions were also established for each case. It was clearly established that the electrode reaction was from a reversible to an irreversible process, plus it was also mixing reaction current controlled.

Anyang Citizens' Awareness of the Effects of City Parks on City Dwellers

Marshall, Tony,Jang, June-Ho,Eom, Boong-Hoon The Korean Environmental Sciences Society 2019 한국환경과학회지 Vol.28 No.12

This study aimed to investigate educational, social, and environmental effects of city parks on the citizens of Anyang, South Korea. The study conducted a questionnaire survey for 30 days on a sample of 1,080 Anyang residents. Parks can be used for different purposes that have benefits like improving the appeal of the local environment as well as promoting health. The respondents highlighted preferred activities including participating in events, learning eco-practices at school, volunteering, and collaborating with the government to enforce environmental quality laws. The identified effects of parks on citizens according to this study were the benefits obtained from parks in the city, the improvement of their quality of life, and enhancing the environmental quality and sustainability. The study also undertook a correlational analysis to establish the relationship between the citizens' experience in the park and the level of satisfaction they demonstrated in the study for continuity purposes. The data collected was divided into 2 data forms entailed in a comparative analysis chart for the city's 12 parks at different times of the day, and a clustered analysis using 4 data clusters grouped based on the profiles of survey responders. The study concluded that the educational, social, and environmental effects of the parks are significant, suggesting an array of programs that can be used to enhance urban redevelopment and showed the role of parks in environmental awareness for cities in the future.

Sediment Yield by Instantaneous Unit Sediment Graph

Lee, Yeong-Hwa The Korean Environmental Sciences Society 1998 Environmental sciences Vol.2 No.1

An instantaneous unit sediment graph (IUSG) model is investigated for prediction of sediment yield from an upland watershed in Northwestern Mississippi. Sediment yields are predicted by convolving source runoff with an IUSG. The IUSG is the distribution of sediment from an instantaneous burst of rainfall producing one unit of runoff. The IUSG, defined as a product of the sediment concentration distribution (SCD) and the instantaneous unit hydrograph (IUH), is known to depend on the characteristics of the effective rainfall. The IUH is derived by the Nash model for each event. The SCD is assumed to be an exponential function for each event and its parameters were correlated with the effective rainfall characteristics. A sediment routing function, based on travel time and sediment particle size, is used to predict the SCD.

Use of Geographic Information System Tools for Improving Atmospheric Emission Inventories of Biogenic Source

Shin, Tae-joo The Korean Environmental Sciences Society 1999 Environmental sciences Vol.3 No.3

Biogenic source emissions refer to naturally occuring emissions from vegetation, microbial activities in soil, lightening, and so on. Vegetation is especially known to emit a considerable amout of volatile organic compounds into the atmosphere. Therefore, biogenic source emissions are an important input to photochemical air quality models. since most biogenic source emissions are calculated at the county-level, they should be geographically allocated to the computational grid cells of a photochemical air quality model prior to running the model. The traditional method for the spatial allocation for biogenic source emissions has been to use a "spatial surrogate indicator" such as a county area. In order to examine the applicability of such approximations, this study developed more detailed surrogate indicators to improve the spatial allocation method for biogenic source emissions. Due to the spatially variable nature of biogenic source emissions, Geographic Information Systems(GIS) were introduced as new tools to develop more detailed spatial surrogate indicators. Use of these newly developed spatial surrogate indicators for biogenic source emission allocation provides a better resolution than the standard spatial surrogate indicator.indicator.