선회식 가압부상 공정을 이용한 음폐수 처리시 순환수량 변화에 따른 유기물 제거 특성에 관한 연구

김진보 ( Jin-bo Kim ),한영립 ( Young-rip Han ),하미림 ( Mi-rim Ha ),정병길 ( Byung-gil Jung ),최영익 ( Young-ik Choi ) 한국환경기술학회 2014 한국환경기술학회지 Vol.15 No.6

본 연구는 음폐수 처리공정 개선을 위해 음폐수처리장 생물반응조 전단에 유입되는 원수를 이용하여 선회식 가압부상공정을 적용하였으며, 운전시 반응조 내 순환유량을 조절하여 운전조건별 유기물제거 및 변화를 파악하고자 하였다. 선회식 가압부상공정의 경우 초기응집제 주입량 4.5 mL/L를 고정하여 유입유량 3.5 L/min에 동일하게 주입하고, 주입공기유량 1.2 L/min 및 운전압력 3.0 kgf/cm²으로 설정 후 공기유량(1.5, 2.0 및 2.5 L/min)을 조절하여 운전하였다. 연구결과 순환유량 2.5 L/min에서 유기물(BOD₅, COD_Cr, 및 TOC) 및 부유물질(SS)의 제거효율이 가장 높은 것으로 나타났으며, DOC(dissolved organic carbon) 농도를 분석한 결과 DOC/TOC 비율이 순환유량 2.5 L/min에서 0.82로 나타났다. 선회식 가압부상공정 적용 시 고농도 유기물 폐수내 포함된 입자상 유기물질인 POC(particulate organic carbon)의 효과적인 처리가 가능한 것으로 사료되며, 선택적인 제거에 의해 음폐수 처리 시 선회식 가압부상공정 후단에 운전되는 생물학적 처리공정의 효율을 향상시킬 수 있을 것으로 판단된다. The purpose of this research was to improve the treatment process of food wastewater from food waste recycling facilities. Applied a cyclonic-DAF(dissolved air flotation) process as pre-treatment to improve the efficiency of solid-liquid separation was considered. Also, aim of this study is to develop an effective operation of each unit processes and stable linked treatments from other treatment facilities through determination of optimal operating conditions with changing in air flow and pressure of the micro-bubble generator. Organic matter removal and other changed were researched by different operations. In cyclonic-DAF(dissolved air flotation) process, initial coagulation concentration, influent flow rate, influent air flow rate, and operation pressure were set as 4.5 mL/L, 3.5 L/min, 1.2 L/min and 3.0 kgf/cm², respectively. In recycling flow rate with 2.5 L/min, removal rates of dissolved organic matters(BOD₅, COD_Cr, TOC) and SS were the highest. In order to improve biological treatment process, DOC(dissolved organic carbon) was analyzed. And when recycling flow rate with 2.5 L/min, DOC/TOC was 0.82. It was considered that the cyclonic-DAF process was more possible for pre-treatment in order to improve the efficiency of solid-liquid separation, that is, POC(particulate organic carbon) than existing process. It could improve biological treatment process through decrease of suspended-solids.

CapSG를 이용한 IoT 서비스 접근제어 플랫폼

김진보 ( Jin Bo Kim ),장데레사 ( Deresa Jang ),김미선 ( Mi Sun Kim ),서재현 ( Jae Hyun Seo ) 한국정보처리학회 2015 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.4 No.9

사물인터넷(Internet of Things, IoT) 환경의 다양한 프로토콜, 도메인, 애플리케이션 위에서 유연한 서비스 제공을 위한 효율적인 사용자 권한 관리 방법이 필요하다. 본 논문은 IoT 환경의 다양한 서비스에 대한 효율적인 접근제어를 제공하기 위하여 CapSG(Capability Service Gateway)를 이용한 IoT 서비스 플랫폼을 제안하였다. CapSG는 인증과 접근 권한을 포함하는 토큰을 사용하여, 서비스 주체에 대한 인증 및 접근제어를 수행하여 서비스를 제공한다. 또한, 서비스 토큰 관리를 위한 생성, 위임, 폐기, 거절 등의 기능을 제공한다. 본 논문은 각 도메인에 대한 토큰 그룹을 사용함으로써 도메인별 서비스 접근제어가 가능하며, 토큰 그룹 내의 특정 서비스 토큰을 이용한 접근제어 수행도 가능하도록 설계하여 IoT의 다양한 서비스 요구에 대한 접근제어의 유연성과 효율성을 제공한다. There is great need for efficient user rights management method to provide a flexible service on variety protocols, domains, applications of IoT environments. In this paper, we propose a IoT service platform with CapSG to provide efficient access control for IoT various services of the environment. CapSG uses a token including authentication and access rights to perform authentication and access control service entity providing services. In addition, the generated token for service management, delegation, revocation, and provides a function such as denied. Also, it provides functions such as generation, delegation, disposal and rejection for service token management. In this paper, it provides the flexibility and efficiency of the access control for various services require of the IoT because of it is available to access control specific domain service by using the token group for each domain and is designed to access control using specific service token of tokens group.

보안성 향상을 위한 IoT 서비스 시스템 구현 및 평가

김진보(Jin-bo Kim),김미선(Mi-sun Kim),서재현(Jae-hyun Seo) 한국정보보호학회 2017 정보보호학회논문지 Vol.27 No.2

사물인터넷은 다양한 사물들로부터 발생되는 정보를 수집·공유·분석하여 사람들에게 유용한 정보 서비스를 제공하는 것을 의미한다. 본 논문은 사물인터넷 환경에서 발생하는 서비스 접근제어, 서비스 보안 기술 그리고 ID 관리 기술에 대한 서비스 영역에서의 보안 안전성을 향상시키는 방안을 제시한다. 서비스 보안의 안전성 향상을 위해 공개키 기반의 C&C(Certificate and Capability) 서비스 토큰 인증서를 설계하고 발급할 수 있는 서비스를 구현하였다. 또한 노드 디바이스로부터 수집된 데이터를 기반으로 리소스 서비스의 생성 시 이를 효율적으로 관리하고자 LCRS(Left Child-Right Sibling) 리소스 모델관리 방안과 서비스에 대한 접근제어를 위해 리소스 서비스 URI 보안 관리하는 IoT 서비스 시스템을 구현하였다. Internet of Things includes the whole process of collected information generated from a variety of objects, as well as analyzing and sharing it, and providing useful information services to people. This study seeks ways to improve security and safety in the areas of service security technology, ID management technology and service access control, all of which take place in the IoT environment. We have implemented the services that can design and issue C&C (Certificate and Capability) service token authentication, which is based on a public key, to improve the service security. In addition, we suggest LCRS (Left Child-Right Sibling) resource model management for the efficient control of resources when generating the resource services from the data collected from node devices. We also implemented an IoT services platform to manage URL security of the resource services and perform access control for services.

사물인터넷 서비스 접근제어를 위한 리소스 서비스 관리 모델 구현

김진보(Jin-Bo Kim),김미선(Mi-Sun Kim),서재현(Jae-Hyun Seo) 한국스마트미디어학회 2016 스마트미디어저널 Vol.5 No.3

사물인터넷 기술을 이용한 서비스 형태는 셀 수 없이 많으며, 현재도 여러 기관에서 다양한 서비스를 제공하기 위해 새로운 기술이나 프로토콜을 만들어 내고 있다. 본 논문은 사물인터넷 서비스 접근제어를 위한 시스템에서 효율적인 서비스 제공을 위한 리소스 서비스 모델을 설계하고 구현한다. 사용자가 접근하고자 하는 리소스 서비스를 LCRS(Left Child-Right Sibling) 트리를 이용하여 모델링하고, 리소스 서비스 토큰을 이용하여 서비스에 대한 접근 제어를 수행할 수 있다. Many countless services form using the Internet technology of things, in order to provide a variety of services in the current also many institutions, have created a new technology and protocols. In this paper, we design the resource service model for the efficient service provided by the system for controlling access to the Internet services of the things, to implement. The resources of the service that the user tries to access modeled using LCRS (Left Child-Right Sibling) tree, by utilizing the service token resource, it is possible to perform access control to services.

토끼 음경해면체의 비-아드레날린 비-콜린성 이완반응에서 산화질소의 역할

박미선,김진보,홍은주,홍승철,Park, Mi-Sun,Kim, Jin-Bo,Hong, Eun-Ju,Hong, Sung-Cheul 대한약학회 1997 약학회지 Vol.41 No.3

The role of nitric oxide (NO) on the non-adrenergic non-cholinergic (NANC) relaxations induced by the short and prolonged electrical field stimulation (EFS) has been studied in the rabbit corpus cavernosum. In the presence of atropine and guanethidine the prolonged EFS (2-16 Hz) of corpus cavernosal strips precontracted with phenylephrine produced frequency-dependent relaxations, which were abolished by tetrodotoxin as shown in the relaxations induced gy the short EFS, indicating that their orgin is NANC nerve stimulation. $N^G$-nitro-L-arginine (L-NNA), inhibitor of nitirc oxide synthase, caused a concentration-dependent inhibition to the NANC relaxation, and at 100 M L-NNA the relaxation were virtually abolished. The inhibitory effect of L-NNA was reversed by L-arginine. Hemoglobin abolished the relaxations to NO and also caused a concentration-dependent inhibition of the NANC relaxation. The hemoglobin-resistant relaxation induced by EFS was eliminated by L-NNA. Methylene blue significantly reduced the NANC relaxation in a conentration-dependent manner. The NANC relaxation was not affected by a VIP-inactivating pepridase, alpha0chymotrypsin, whereas VIP-induced relaxation was completely abolished. NO- and VIP-induced relaxation were not affected by L-NNA. These results indicate that the NANC relaxation induced by prolonged EFS of the rabbit corpus cavernosum is mediated by NO-guanosine 3',5'-cyclic monophosphate pathway as shown in the relaxation induced by the short EFS, and that VIP release is not essential for the NANC relaxation of the rabbit corpus cavernosum and VIP is not involved the generation fo NO.

웹 2.0과 Ajax 보안 취약점

김미선(Mi-Sun Kim),김진보(Jin-Bo Kim),양형초(Hyoung-Cho Yang),김용민(Yong-Min Kim),서재현(Jae-Hyun Seo) 한국정보과학회 2007 정보과학회지 Vol.25 No.10

성장생물학 : 비육돈의 출하체중 증가가 등지방두께, “떡지방” 삼겹살 발생률, 도체등급 및 도체의 품질특성에 미치는 영향

박만종 ( Man Jong Park ),박병철 ( Byung Chul Park ),하덕민 ( Duck Min Ha ),김진보 ( Jin Bo Kim ),장경순 ( Kyoung Soon Jang ),이도현 ( Do Hyun Lee ),김관태 ( Gwan Tae Kim ),진상근 ( Sang Keun Jin ),이철영 ( C Young Lee ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.3

본 연구는 돼지 출하체중 증가가 ``떡지방`` 삼겹살 발생률, 도체 등급 및 도체의 품질 특성에 미치는 영향을 구명하기 의해 수행되었다. 본 목적을 위해 85~150kg 체중 범위의(Yorkshire × Landrace) × Duroc 교잡종 거세돼지와 암퇘지 각각 250두를 도살하여 그 도체를 분석하였다. 거세돼지와 암퇘지의 등지방두께(y;mm)는 각각 다음과 같이 생체중(x;kg)에 선형으로 회귀하였다: y = 0.1827x+3.4825(r²=0.4671) 및 y = 0.2015x-0.6972(r²=0.4736). 삼겹살의 제 11~12 늑골부 5cm 폭의 등쪽 반절편의 지방조직 중량비가 55%를 초과하는 경우를 떡지방의 기준으로 설정했을 때 떡지방 삼겹살은 거세돼지에서 10건 발생하였으나 소매상에서 떡지방 삼겹살로 판정된 경우는 없었다. 과중량으로 인해 도체등급이 강등된 도체는 총 101건(20.2%)에 달하였다. 1+A 등급도체는 다른 모든 등급 도체보다 근내지방도가 높았으나, 근내지방 도와 도체 결함 특성을 제외하면 도체등급간 가시적인 품질 상의 차이는 발견되지 않았다. 결론적으로 도체 품질을 충분히 반영하지 못하고 크기만 클 뿐 정상적인 도체에 대해서는 평가절하는 현행 도체등급 판정기준은 개정되어야 좋을 것이다. 또한 돼지 출하체중을 증가시킬 때 떡지방 삼겹살 발생률은 중요한 고려 사항이 아닌 것으로 사료된다. The present study was undertaken to investigate the effects of increasing pig market weight on the incidence of the ``caky-fatty`` belly, carcass grade and carcass quality traits. To this end, 500(Yorkshire×Landrace)×Duroc market pigs consisting of equal numbers of barrows and gilts were slaughtered at body weights ranging from 85 to 150kg and their carcasses were analyzed. Backfat thickness (BFT; mm) of the barrows and gilts regressed on live weight (kg) linearly as follows: BFT (y)=0.1827x+3.4825(r²=0.4671) and y = 0.2015x-0.6972(r²=0.4736), respectively. The caky-fatty belly, which, by definition of the present study, had=55% fat by weight in the dorsal-side half of a 5 cm-wide belly strip between the 11th and 12th ribs, was found in 10 carcasses from barrows. However, no belly was condemned as ``caky-fatty`` by the retailers. Total number of carcasses which were down-graded on account of overweight was as many as 101 (20.2%). The 1+A-grade carcasses exhibited a superior intramuscular fat score to all other grades, but except for this and the defective quality traits, no visible differences were found in carcass quality among different carcass grades. In conclusion, the current carcass grading system, which is sparingly reflective of the carcass quality and also under-evaluates the larger but otherwise normal carcasses, may as well be revised. Moreover, the incidence of the caky-fatty belly appears not to be a critical factor to be considered when increasing the pig market weight.

선회식-가압부상공정을 이용한 음폐수의 처리특성

최영익 ( Young-ik Choi ),한영립 ( Young-rip Han ),김진보 ( Jin-bo Kim ),성낙창 ( Nak-chang Sung ),정병길 ( Byung-gil Jung ) 한국환경기술학회 2014 한국환경기술학회지 Vol.15 No.2

본 연구에서는 음폐수 처리를 위해 선회식 가압부상공정을 적용하였다. 본 연구는 재순환량, 공기량 및 압력 변화와 같은 세 가지 운전인자의 영향을 부유물질(SS) 제거특성을 중심으로 평가하는데 그 목적이 있다. 선회식 가압부상장치에 대한 수돗물의 총괄물질전달계수(K_La)의 값을 추정하기 위해 공기유량을 1.2 L/min, 압력 3 kgf/cm²에서 시간에 따른 DO 농도변화를 측정한 결과 포화상태에 도달한 시간은 30분으로, 이때의 DO 농도는 6.50 mg/L를 나타내었다. 이 측정값을 토대로 표준상태(20℃)로 보정하여 계산된 총괄물질전달계수(K_La)의 값은 7.73 hr^-1로 산정되었다. 또한, 음폐수에 대한 선회식 가압부상장치 실험에서 재순환량 및 압력이 증가할수록 SS 제거효율증가하는 것으로 나타났으며, 적정 공기량은 1.2 L/min로 나타났다. Cyclonic-dissolved air flotation(CDAF) process was applied to food wastewater treatment. This research was performed in three main operating parameters such as recycled wastewater, air flow rate and pressure and focused on removing SS(suspended solids). As a result of measuring a dissolved oxygen(DO) concentration variance according to operating time under 1.2 L/min of air flow and 3 kgf/cm² of pressure in order to evaluate the value of coefficient of mass transfer(K_La) of tab water for the CDAF system, the time reaching saturation was 30 minutes, and DO concentration at that time was 6.50 mg/L. Based on this measured value, the K_La into standard state(20℃) was calculated to be 7.73 hr^-1. Besides, as recycling water and pressure increased at the experiment of the CDAF system for food wastewater, it was found that SS removal efficiency increased, and the optimal air flow was found to be 1.2 L/min.

가토 위저에서 Nitric oxide에 의해 매개되는 비-아드레날린 비-콜린성 이완반응

홍승철(Sung Cheul Hong),최지은(Ji Eun Choi),한석규(Suk Kyu Han),김영미(Young Mi Kim),김남득(Nam Deuk Kim),박미선(Mi Sun Park),홍은주(Eun Ju Hong),김진보(Jin Bo Kim) 대한약학회 1994 약학회지 Vol.38 No.2

The role of nitric oxide(NO) as neurotransmitter in non-adrenergic non-cholinergic (NANC) relaxation induced by electrical stimulation has been studied in circular muscle strips of the rabbit gastric fundus. In the presence of atropine and guanethidine, low frequency(1-20 Hz) and short trains (5 s) of electrical stimulation induced the frequency-dependent relaxations which were not affected by adrenergic and cholinergic blockage, but abolished by tetrodotoxin, a nerve conductance blocker. L-NNA, a stereospecific inhibitor of NO biosynthesis, inhibited the relaxations induced by electrical stimulation but not affected the relaxation to exogenous NO. The effect of L-NNA was prevented by L-arginine, the precursor of the NO biosynthesis, but not by its enantiomer, D-arginine. Exogenous administration of NO(10- 100 mcM) caused the concentration-dependent relaxation which showed a similarity to those obtained with electrical stimulation. Hemoglobin, a NO scavenger, abolished the NO-induced relaxations and also markedly inhibited those evoked by electrical stimulation. Application of adenosine triphosphate(l - 10 mcM) induced concentration-independent contractions, but in high dose caused temporary contraction followed by relaxation which was not affected by L-NNA. Exogenous vasoactive intestinal polypeptide(10-100 nM) induced the concentration-dependent relaxation, while its effects were slower in onset and more persistent than those induced by short trains and low frequencies of electrical stimulation. Based on above results, it is suggested that NO is the principal neurotransmitter of NANC nerve at relaxation induced by short trains and low frequencies of electrical stimulation in the rabbit gastric fundus.

主要 眺望點에서 바라본 港灣景觀의 注視特性에 관한 硏究

김은일,정성구,윤진보,신남수 대한건축학회 2004 대한건축학회논문집 Vol.20 No.7

It is necessary to research for environmental features of regions rather than each building and scenery to form desirable city landscape that describes placeness concretely. In case of Korea, vast harbors and industry complex are generally located in the waterfront of port cities because the waterfront is noticed as one factor which supplies a fresh ground. So, waterfront forms a wide and long blackout curtain that causes the destruction of nature, shapes a factory structure curtain, and completely covers hinterland landscape. It makes hard for citizens to access to the seaside, depriving capacity of waterfront for water-familiar, and destructing beautiful seashore environment. This research project is to provide those architects or planners with the design guidelines of improving port and hinterland landscape. To do so, this study is carried out the physiological evaluation making eye fixation behaviors. The main results were summarized as follows: 1) Satisfaction with the ports' scenery turned out being given high estimation according as the objections being seen is more natural, a scale of ports' landscape elements is larger, and shape of landscape elements are simpler. 2) Distribution of a visual point is concentrated on facilities that have unique shapes and is under the influence of seashore line, letters carved in buildings and conspicuous colors. In addition, it tends to gather a visual point that facility's movement would be expected. 3) Eye fixation behaviors stops at unique shapes, structural lines of the physical elements and color factors of the objects. And it was judged that human recognized the object through this. 4) Scenery that include large natural element has a flexible movement of view and make general populace see the object for more long time. Therefore, it is necessary to examine the vista point on view-distance with research on improving port's naturality.