대류 상자 실험을 통해 대류 순환 모형을 유추하지 못하는 학생들의 원인을 분석하여 대류 실험을 재설계하였다. 초기 형식적 조작기에 있는 학생들이지만 직접 보지 못한 자연 현상에 대해서는 유추하기가 어려우므로 자연 현상을 축소한 대류 상자를 개발하여 학생들의 과학적 이해도를 높일 수 있는 방법을 연구하였다. 기존 대류 상자 실험의 문제점을 개선하여 제작한 대류 상자를 통해 수업에 적용한 결과 학생들의 이해도가 크게 증가하였다. 바람의 이동 현상만을 관찰하는 것이 아니라 향을 여러 위치에서 넣어봄으로써 과학적 사고를 자극하고 직접 관찰할 수 있었다. 또한 자연 현상의 축소판에 가깝게 설계하여 학생들이 과학적 오개념을 갖지 않는다. 모둠원이 양방향에서 관찰함으로써 수업의 참여도가 높아졌다. 새로 개발된 대류상자는 기존 대류상자에 비하여 저렴한 비용으로 제작할 수 있으며, 선명한 대류 현상을 볼 수 있다.

본 연구는 간척지에서 여름철 대표 사료작물인 옥수수와 수수수수 교잡종의 생산성 및 화학비료와 가축분뇨의 시용시 생산성을 비교하기 위하여 2008년은 화옹간척지에서 2009년은 석문간척지에서 시험을 실시하였다. 간척지에서 사료작물의 생산성은 옥수수가 수수수수 교잡종보다 높았으며 사료가치도 옥수수가 수수수수 교잡종보다 높았다. 화학비료와 가축분뇨의 시용시 생산성은 옥수수의 경우 화학비료에서 높은 수량을 보였으며 수수수수 교잡종의 경우 화옹간척지에서 시험한

체계적이고 종합적인 국토관리를 위해 국토의 변화경향을 파악하는 국토모니터링은 필수적이다. 국토 모니터링은 국토와 관련된 모든 분야에 대해 다양한 통계정보와 공간 정보를 활용하여 국토의 현황을 파악하는 것으로, 국토의 변모 양상을 알려줄 뿐 아니라, 종합적인 분석을 통해 새로운 국토정책의 수립에 영향을 미치기 때문에 매우 중요한 일이다. 본 연구에서는 이러한 점을 고려하여 모니터링 지표와 데이터의 활용성을 향상시키는 국토 모니터링의 방법론적 체계를 구축하고자 하였다. 이를 위해 국내외의 모니터링의 사례를 통해 우리나라의 모니터링 체계의 현황에 대해 살펴보았고, 국토 모니터링에 대한 종합적인 접근으로서 오리엔터 (orientor)의 개념을 활용한 모니터링 방법론을 제시하였다. 또한, 국토 모니터링 대상으로서 모니터링 지표군과 지표 측정의 근거가 되는 데이터베이스 현황을 조사하였고, 모니터링 방법론의 활용으로 앞에서 제시한 국토모니터링 방법론을 토대로 모니터링을 실시하여 이 과정에서 나타난 모니터링 데이터 처리와 결과 표현 방식의 문제점을 중심으로 세부적인 모니터링 과정에서 고려하여야 할 사항들을 살펴보고 대안을 제시하였다.

The purpose of this paper is to survey the perspective of the coming days of those two poets, Yeats and Eliot, comparing "The Second Coming" and The Waste Land. Both Yeats's "Second Coming" and Eliot's The Waste Land present a renewal process, but each one focuses on different goals and subjects; Eliot on a particular person's transformation, whereas Yeats predicts a switch of the entire world as a result of an escalation of chaos. And while Yeats attempts to present a definite picture of what he believes will happen at the time of this renovation, as a human being, lack of foresight leaves him to conclude with nothing more than an unanswerable question. Eliot, on the other hand, uses ambiguity to support and develop his theme: death is the way to rebirth. But for Eliot this rebirth, which must be necessarily obscure and extremely perplexing to the newly-born. In contrast, Yeats maintains a pessimistic tone created by his futility on the bleak situation. Though the two poets see the present similarly, their religious differences cause them to view the future differently, consequently Eliot's The Waste Land has a much more hopeful theme than Yeats's "The Second Coming."

This study was carried out to investigate the effects of cattle slurry application in paddy land cultivated with whole crop rice on the properties of soil and water. A field study was conducted at Baeksan-myeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The contents of organic and inorganic properties in soil samples collected at the end of the experiment were remarkably higher than those at the beginning of the experiment (P＜0.05). The concentrations of NO₃-N, NH₃-N and PO₄-P in discharge and leaching water were different significantly between both treatments.

This study was carried out to investigate the effects of cattle slurry application on the productivity and nutritive values of whole crop rice in paddy land. A field study was conducted at Baeksan-myeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The yield of dry matter (DM) of whole crop rice in treatment of cattle slurry significantly decreased as compared with that of treatment of standard fertilizer (P＜0.05). However, nutritive values of whole crop rice were not different significantly between both treatments.

In this paper, the effect of different land-use types on soil organic carbon (SOC) and Particulate Organic Carbon(POC) was studied by analyzing the soils in the meadow and conversing land of grassland to cropland in ecotones of agriculture and animal husbandry. It is shown t㏊t, compared with meadow, rotations of P/O and P/Cwill reduce SOC in 0-30㎝ soil layers by 47.54%-65.11% and 34.16-64.26% and POC by 16.90%-24.48% and 11.94%-20.29%, respectively. And SOC in meadow is more t㏊n in conversing land of grassland to cropland (P＜0.05). Conversing grassland to cropland in ecotones of agriculture and animal husbandry will decrease the contents of SOC and POC.

The temporal variations of soil CO₂ efflux (Rs) under sown alfalfa pasture and rangeland in the Loess Plateau was studied. Results showed t㏊t diurnal changes of soil CO₂ efflux were highly associated with changes of soil temperature, with tendency t㏊t the minimum values occurred between 0100 to 0600 (Beijing Standard Time, BST), maximum value between 1200 and 1600. Soil temperature at 5㎝ depth gave the highest correlation coefficient and account for 72.2% and 89.5% of diurnal variation in soil CO₂ effluxes at rangeland and alfalfa pasture, respectively. Annual CO₂ emissions from alfalfa pasture were 488.5 g C/㎡/yr, which was higher t㏊n t㏊t from rangeland.

This study was carried out to investigate the properties of soil and water under Double-cropping SSH followed by whole crop barley (SSFWB) or by Hairy vetch (SSFHV) in paddy land. A field study was conducted at Baeksan-myeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The pH and the contents of T-N and organic matter (OM) in soil samples collected at the end of the experiment were remarkably higher t㏊n those at the beginning of the experiment in both SSFWB and SSFHV treatment (P＜0.05). The contents of an exchangeable cations at the end of the experiment were remarkably higher t㏊n those at the beginning of the experiment in both SSFWB and SSFHV (P＜0.05). And then, the concentration of NO₃-N, NH₃-N and PO₄-P in discharge and leaching water were not influenced by the cropping system

This study was carried out to investigate the productivity and nutritive values of SSH under Double-cropping SSH followed by whole crop barley (SSFWB) or by Hairy vetch (SSFHV) in paddy land. A field study was conducted at Baeksan-myeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The yield of SSH in SSFWB treatment was higher t㏊n t㏊t of SSFHV (P＜0.05). All nutrients values of SSH were not influenced by the cropping system. However, all nutrients of SSH in SSFWB treatment were just a little increase, compared with those of SSFHV.

This study are carried out to investigate the effects of double cropping system, such as winter whole crop barley followed by rice (WBFR) or after Sorghum × Sudan hybrid (WBASS), in paddy land on the properties of soil and water. A field study was conducted at Baeksan-myeon, Kimje, Jeonbuk province in Korea on clay loam soil for 3 years. All plots were arranged in completely randomized design with three replicates. The pH and the contents of T-N, P₂O? and organic matter (OM) in soil samples collected at the end of the experiment were remarkably higher t㏊n those at the beginning of the experiment (P＜0.05) in both WBFR and WBASS. The contents of an exchangeable cations (CEC) at the end of the experiment were remarkably higher t㏊n those at the beginning of the experiment (P＜0.05). The concentrations of NO₃-N, NH₃-N and PO₄-P in discharge and leaching water were not influenced by the cropping system.