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이여명,김상윤,안혜린,이창훈,정승택 한국토양비료학회 2023 한국토양비료학회지 Vol.56 No.3
Application of soil organic matter (SOM) is one of the most important strategies to enhance soil quality and combat climate changes by mainly increasing soil carbon stocks in agriculture. However, there is still a lack of information on soil respiration rate and temperature sensitivity in soils amended with different organic amendments in red pepper cultivation soil. To evaluate effects of different organic resources on enhancing soil carbon (C) balance in red pepper cultivation soil, four different low-carbon organic amendments (red pepper residue, compost, rice hull biochar, and wood biochar) with different application levels (0, 5, 10, and 20 Mg d.w ha-1) were set on a laboratory experiment by investing soil respiration rate, Q10 value, and soil chemical properties including pH, total C, dissolved organic C, etc. This study showed that all organic amendments significantly increased soil C input, showing the highest mean value (49.8 mg C) in NPK+wood biochar treatment as followed by NPK+rice husk biochar (38.7 mg C) > NPK+red pepper residue (33.3 mg C) > NPK+compost (26.7 mg C). However, NPK+rice husk biochar showed C output, showing the lowest mean soil respiration rates (0.86 mg C) during the incubation as followed by NPK+compost (1.08 mg C) > NPK+ wood biochar (1.13 mg C) > NPK+red pepper residue (2.70 mg C) during the experiment. The C balance was the highest in the NPK+wood biochar (48.7 mg ΔC) mainly due to increased C input as compared to low C output. This result might be due to having different chemical properties that possessed a more stable C source than easily degradable C in the biomass. As an indicator of temperature sensitivity, the Q10 value was the highest in NPK+red pepper residue treatment (1.38) that could be comparatively sensitive for SOM degradation with rising air temperature and then followed by NPK+compost (1.21) > NPK+wood biochar (1.19) > NPK+rice hull biochar (1.18). In conclusion, wood biochar application could be a better soil management strategy to increase soil C storage particularly in the greenhouse conditions, showing high temperature during the cultivation.
이여명,구평모,김재룡,허경욱 대한이비인후과학회 부산,울산,경남 지부회 2016 임상이비인후과 Vol.27 No.1
Wegener’s granulomatosis is an uncommon idiopathic, multi-system disease characterized by granuloma formation and vasculitis affecting small to medium sized vessels. It usually presents with involvement of upper, lower respiratory tracts and the renal system, but also may include otological manifestations. A 54-year-old woman was suffering from right otorrhea and ear fullness and treated with antibiotics. Despite of the treatment, the otologic symptoms were aggravated and right facial palsy was developed. She also represented rhinologic symptoms such as nasal obstruction and rhinorrhea after 2 months. Diagnosis as Wegener’s granulomatosis was supported by biopsy from nasal cavity and serologic marker such as C-ANCA. She underwent medical therapy with prednisone and cyclophosphamide, and then both otologic and rhinologic symptoms were improved. We report this case with a review of the related literatures.
센서 네트워크에서 데이터 압축을 위한 피드백 배포 기법
여명호(Myung Ho Yeo),성동욱(Dong Ook Seong),조용준(Yong Jun Cho),유재수(Jae Soo Yoo) 한국정보과학회 2010 정보과학회논문지 : 데이타베이스 Vol.37 No.2
네트워크 분야에서 데이터 압축은 네트워크 트래픽을 줄이기 위한 전통적이고 효과적인 방법 중 하나이다. 센서 네트워크의 데이터는 시/공간적인 연관성을 가지고 있으며, 이러한 특성을 이용한 데이터 압축 기법들이 많이 연구되고 있다. 센서 노드는 제한된 범위내의 통신이 가능하며, 자신의 통신 반경내의 데이터만을 활용한다. 만약 네트워크의 전체 데이터 분포 특성을 활용할 수 있다면, 데이터 압축의 효율을 증가시킬 수 있다. 본 논문에서는 네트워크 전체 데이터 분포 특성을 활용하기 위한 새로운 접근의 피드백 배포 기법을 통한 데이터 압축 기법을 제안한다. 제안하는 기법은 기지국 혹은 슈퍼 노드에 의해 수집된 데이터의 빈도를 이용하여 허프만 코드를 생성하고, 배포함으로써 네트워크 전체의 데이터 압축을 용이하게 한다. 본 논문의 우수성을 보이기 위해서 시뮬레이션을 통해 성능 평가를 수행하였으며 그 결과 네트워크의 수명이 약 30% 증가하였다. Data compression technique is traditional and effective to reduce network traffic. Generally, sensor data exhibit strong correlation in both space and time. Many algorithms have been proposed to utilize these characteristics. However, each sensor just utilizes neighboring information, because its communication range is restrained. Information that includes the distribution and characteristics of whole sensor data provide other opportunities to enhance the compression technique. In this paper, we propose an orthogonal approach for compression algorithm based on a novel feedback diffusion algorithm in sensor networks. The base station or a super node generates the Huffman code for compression of sensor data and broadcasts it into sensor networks. Every sensor that receives the information compresses their sensor data and transmits them to the base station. We define this approach as feedback-diffusion. In order to show the superiority of our approach, we compare it with the existing aggregation algorithms in terms of the lifetime of the sensor network. As a result, our experimental results show that the whole network lifetime was prolonged by about 30%.