http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
濟州島 人工草地 植生의 經時的 變化에 관한 硏究 : 草種의 李節 및 年次的 變化 The Seasonal and Annual Changes in Species
金翰琳,趙南棋,宋昌吉 제주대학교 1981 논문집 Vol.13 No.-
本 硏究는 濟州道 改良牧草地에 있어서 草種組成의 季節 및 年次的 變動狀態를 調査한 結果이며 그 槪要는 다음과 같다. 1. 改良年度別 草種의 變動狀態는 1975年 草地에서 37種이었으나 年數가 經過함에 따라 種數가 增加되어 1980年 草地에서는 130種이었으며 每年 季節에 따르는 種의 數는 夏期에 가장 많았고 春期에는 種의 分布가 가장 적었다. 2. 改良年度別 生育型의 分布變動狀態는 1975年 草地에서 一年生 12種, 多年生 25種, 木本 1種이었으나,年數가 지남에 따라 每年 增加되어 1980年 草地에서는 一年生 42種, 多年生 88種, 木本 5種이었으며, 每年 季節에 따르는 生育型에 있어서는 一年生은 秋期에서, 多年生은 夏期에서 가장 많은 種이 分布되었고 木本雜草는 季節에 變化가 없었다. This study was conducted to investigate the seasonal and annual changes in species on the impoved pastures in Cheju Island. The results are as follows : 1. The annual changes in the number of intruding weed species were obsered. 33 weed species were found in 1975 and increased year after year to 127 species in 1980. The seasonal changes of species by year were also observed. In summer more species ranged than in any other seasons and the number of species growing in spring was found fewer than in other seasons. 2. The distributional changes in annual and perenial plant were brough on. 10 species of annual plant, 23 species of perennial plant, and one species of arbor were found in 1975 and increased respectively year by year to 44 species (annual plant), 86 species(perennial plant) and 5 species (arbor) in 1980. The seasonal changes in ecology by year showed a tendency that more species of annual plant ranged in autumn, and more perennial plants in summer than in any other season. But there is no change in the species of arbor.
Thermal Insulation of Protective Clothing Materials in Extreme Cold Conditions
Zemzem Mohamed,Hallé Stéphane,Vinches Ludwig 한국산업안전보건공단 산업안전보건연구원 2023 Safety and health at work Vol.14 No.1
Background: Thermophysiological comfort in a cold environment is mainly ensured by clothing. However, the thermal performance and protective abilities of textile fabrics may be sensitive to extreme environmental conditions. This article evaluated the thermal insulation properties of three technical textile assemblies and determined the influence of environmental parameters (temperature, humidity, and wind speed) on their insulation capacity. Methods: Thermal insulation capacity and air permeability of the assemblies were determined experimentally. A sweating-guarded hotplate apparatus, commonly called the “skinmodel,” based on International Organization for Standardization (ISO) 11092 standard and simulating the heat transfer from the body surface to the environment through clothing material, was adopted for the thermal resistance measurements. Results: It was found that the assemblies lost about 85% of their thermal insulation with increasing wind speed from 0 to 16 km/h. Under certain conditions, values approaching 1 clo have been measured. On the other hand, the results showed that temperature variation in the range (40C, 30C), as well as humidity ratio changes (5 g/kg, 20 g/kg), had a limited influence on the thermal insulation of the studied assemblies. Conclusion: The present study showed that the most important variable impacting the thermal performance and protective abilities of textile fabrics is the wind speed, a parameter not taken into account by ISO 11092.
URBANIZATION AND DEPENDENCY REVERSAL IN THE REPUBLIC OF KOREA
Hall, John B. The Institute for Far Eastern Studies Kyungnam Uni 1988 ASIAN PERSPECTIVE Vol.12 No.1
The statistical evidence is too mixed to allow us to make strong statements about dependency reversal. Some indicators Clearly point that dependency reversal is taking place. Other measures could lead us to the opposite conclusion, i.e. that dependency is actually intensifying. Conclusions, then, will be related to the relative weights which we assign to the respective statistical measures, thereby making such judgements of increasing dependency and dependency reversal purely subjective. In order to dispel the uncertainty which might arise consequent to using subjectively assigned weights, let us examine urbanization in South Korea, for the urbanization process lends strong support to the assertion that dependency reversal is indeed taking taking place there.
Integrating Real-World Numeracy Applications and Modelling into Vocational Courses
( Hall Graham ) 한국수학교육학회 2013 수학교육 학술지 Vol.2013 No.-
Five levels are identified for incorporating applications and modelling into mathematics courses [Tang, A.; Sui, L. & Wang, X. (2003). Teaching patterns of mathematical application and modelling in high school. In: Qi-Xiao Ye, et al. (Eds.), Mathematical modelling in education and culture: ICTMA 10 (pp. 233-248). Chichester, UK: Horwood Publishing]: * Extension * Special Subject * Investigation Report * Paper Discussion * Mini Scientific Research These represent a progression from applications set by the teacher, through increasing student involvement in the solution of real world problems, to totally independent project work. Examples are given of the incorporation of these five levels of application to increase vocational students`` mathematical creativity and motivation. Case studies are presented from: engineering, construction, computing, and environmental science.
Nutrient Recycling : The European Experience - Review -
Hall, J.E. Asian Australasian Association of Animal Productio 1999 Animal Bioscience Vol.12 No.4
Intensive livestock production has increased dramatically in Europe since the 1960s, particularly. in Northern and Central European countries, resulting in large increases in the nutrient pollution of surface and ground waters and in atmospheric emissions of ammonia. This has arisen due to inadequate management of the large amounts manure produced, particularly where there has been insufficient land area used for efficient nutrient reuse in crop production. Nutrient pollution from intensive livestock production has progressively degraded the quality of water resources in many parts of Europe, with eutrophication of many inland and coastal waters, as well as soil acidification and ecosystem degradation. These problems have been known for many years, and although there are various international agreements on transboundary pollution, it is largely left to individual countries to set and enforce standards. Consequently, a number of different approaches are employed, although the common feature of these is to encourage farmers to use the nutrients in animal manures efficiently according to crop requirements, which also reduces the potential for accumulation in soil and subsequent loss to the environment. This paper reviews nutrient production and use in Europe and some of the strategies employed to avoid and reduce nutrient pollution.
On Adaptation to Sparse Design in Bivariate Local Linear Regression
Hall, Peter,Seifert, Burkhardt,Turlach, Berwin A. The Korean Statistical Society 2001 Journal of the Korean Statistical Society Vol.30 No.2
Local linear smoothing enjoys several excellent theoretical and numerical properties, an in a range of applications is the method most frequently chosen for fitting curves to noisy data. Nevertheless, it suffers numerical problems in places where the distribution of design points(often called predictors, or explanatory variables) is spares. In the case of univariate design, several remedies have been proposed for overcoming this problem, of which one involves adding additional ″pseudo″ design points in places where the orignal design points were too widely separated. This approach is particularly well suited to treating sparse bivariate design problem, and in fact attractive, elegant geometric analogues of unvariate imputation and interpolation rules are appropriate for that case. In the present paper we introduce and develop pseudo dta rules for bivariate design, and apply them to real data.