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An Implementation and Evaluation of Junk Mail Filtering System to use the FQDN Check and personalized Quarantine Process (FQDN과 개인화 격리 처리를 이용한 정크메일 차단 시스템의 구현 및 평가)

  • Kim, Sung-Chan;Jun, Moon-Seog;Choun, Jun-Ho
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.16 no.6
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    • pp.3-13
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    • 2006
  • Internet mail has become a common communication method to send and receive an amount of data due to the tremendous high speed Internet service increment. But in other respect, the risk and damage of Junk mail is growing rapidly and nowadays Junk mail delivery problem is becoming more serious, because this is used for an attack or propagation scheme of malicious code. It's a most dangerous dominant cause for computer system accident. This paper shows the Junk mail characteristic which is based on the analysis of mail log in reality and then shows the implementation of the FQDN (Fully Qualified Domain Name) check and Personalized classification system and evaluates its performance.

Cargo Accident with Car Sharing in South Korea

  • Kwak, Young-Arm;Cho, Young-Sang
    • Journal of Distribution Science
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    • v.15 no.8
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    • pp.29-36
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    • 2017
  • Purpose - This paper proposes some ideas with a view to reducing any possible accidents caused by unlicensed drivers and an illegal use of other's name, particularly by teenagers in consideration of easy and simple instruction on smartphone with very weak and mere consciousness on auto life. Research design, data, and methodology - This study analyzes some accident cases between cargo trucks and rental cars in South Korea, and unlicensed vehicle with unlicensed drivers who use rental cars collided with cargo trucks which were loaded a lot of goods to be delivered to buyer designated. In order to fulfill this research, a case study accompanied with literature survey was conducted. Ideal suggestion for the right growth on rental car industry will be realized by legislation of the law. Results - This paper classified bodily injury of the victim, property damage and damaged cargo arising out of the unlicensed who is driving on car sharing service in South Korea. Conclusions - For the purpose of reducing cargo accidents caused by unlicensed drivers and an illegal use of other's name particularly by teenagers, this paper proposes some ideas of Amendment of the law, Paradigm shift of car sharing company, Preparation by association side and Technical Complementary Measures in South Korea.

On the Scientific Name of the Invaded Planthopper (Hemiptera: Fulgoroidea: Ricaniidae) in Korea (외래침입해충인 갈색날개매미충(노린재목: 꽃매미상과: 큰날개매미충과)의 재동정 결과 보고)

  • Park, Jaekook;Jung, Sunghoon
    • Korean journal of applied entomology
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    • v.59 no.4
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    • pp.317-323
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    • 2020
  • Brown ricaniid planthopper (Hemiptera: Fulgoroidea) is one of the invaded pests in Korea. However, this species has been misidentified or not identified yet, caused confusions in taxonomy or agroecosystem. In the present study, we collected the specimens occurring in Korea nationwide and taxonomically reviewed. Consequently, we confirmed its scientific name as Ricania sublimata. Herein, a key to the Korean Ricania is provided.

Unrecorded species of Korean invertebrates discovered through the project of 'Discovery of Korean Indigenous Species' III

  • Su-Jung Ji;Jongwoo Jung;Sa Heung Kim;Dong-Ha Ahn;Min-Seop Kim;Jeounghee Lee;Hee-Min Yang;Geon Hyuk Lee;Eunjung Nam;Taeseo Park;Anna B. Jost;Huyen T. M. Pham;Jina Park;Joohee Park;Seoyoung Keum;Ivana Karanovic;Tomislav Karanovic;Joong-Ki Park;Chuleui Jung;Gi-Sik Min
    • Journal of Species Research
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    • v.12 no.4
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    • pp.341-354
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    • 2023
  • This is the third series of catalogs reporting on Korean species discovered through the 'Discovery of Korean Indigenous Species'. This catalog includes 22 species of invertebrates, excluding insects. The catalog includes the scientific name, an abridged list of synonyms, collection sites, distribution, diagnosis, and figures for each species. Additionally, we provide the newly assigned Korean name, specimen voucher, and, if available, mitochondrial CO1 or 16S gene sequences of the species listed. All species identified and documented here will be officially listed on the 'National Species List of Korea', a database maintained by the National Institute of Biological Resources(NIBR).

Review of the Scientific Name and Redescription of the Banded Moray Eel, Previously Reported as Gymnothorax reticularis (Muraenidae, Anguilliformes) in Korea (우리나라에서 과거 Gymnothorax reticularis로 보고된 나망곰치의 학명 검토 및 재기재)

  • Kim, Sung Yeon;Ji, Hwan Sung;Kim, Jin-Koo
    • Korean Journal of Ichthyology
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    • v.24 no.4
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    • pp.292-296
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    • 2012
  • The banded moray eel, previously reported as Gymnothorax reticularis, is redescribed based on one specimen (469.0 mm TL) collected from a fish trap in Geoje-do, South Sea, Korea. It is characterized by 19 dark brown vertical bars; 139 total vertebrae; both jaw teeth large, strong, and slightly serrated; 1 median intermaxillary tooth; small and blunt vomerine teeth. Although the banded moray eel has been reported as Gymnothorax reticularis in Korea by some ichthyologists, this study suggests that its scientific name should be changed to Gymnothorax minor based on its number of vertebrae and presence of a median intermaxillary tooth.

Evaluating Pharmacological Effects of Two Major Components of Shuangdan Oral Liquid: Role of Danshensu and Paeonol in Diabetic Nephropathy Rat

  • Chen, Ying;Liu, Zhuying;Zhou, Fuxing;Zhao, Hang;Yang, Qian;Li, Hua;Sun, Jiyuan;Wang, Siwang
    • Biomolecules & Therapeutics
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    • v.24 no.5
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    • pp.536-542
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    • 2016
  • Shuangdan oral liquid (SDO) containing radix Salviae miltiorrhizae (Chinese name Danshen) and cortex moutan (Chinese name Mudanpi) is a traditional Chinese medicine using for treating vascular diseases. Danshensu (DSS) is a main effective monomer composition derived from radix Salviae miltiorrhizae and paeonol (Pae) from cortex moutan. Although the two herbs are widely used in traditional Chinese medicine, the pharmacological functions of their active compositions were not reported. Therefore, the research of DSS and Pae in mechanisms and pharmacodynamics interaction can provide scientific evidence to support clinical application. The diabetic nephropathy (DN) rats which were induced by streptozotocin (STZ) were treated with SDO, DSS, Pae, and DSS+Pae for eight weeks. The positive effects on DN animal models were investigated by detection of physiological and biochemical indexes and oxidative stress markers, within five treatments: SDO, DSS, Pae, DSS+Pae and insulin group. Compared with the model group, the DSS+Pae group improved the renal function, blood lipid metabolism and blood viscosity, increased the vitality of T-SOD or T-AOC and decreased the level of MDA or NO after the treatment. The study was successfully showed that the DSS+Pae group could delay the process of DN, especially in the renal injury part of histopathology changes. Our results suggest that the co-administration of DSS and Pae significantly may play a protective role in DN rats through decreasing the oxidative stress and improving the blood lipid metabolism mechanisms.

Superoxide and Nitric Oxide Involvement in Enhancing of N-methyl-D-aspartate Receptor-Mediated Central Sensitization in the Chronic Post-ischemia Pain Model

  • Ryu, Tae-Ha;Jung, Kyung-Young;Ha, Mi-Jin;Kwak, Kyung-Hwa;Lim, Dong-Gun;Hong, Jung-Gil
    • The Korean Journal of Pain
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    • v.23 no.1
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    • pp.1-10
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    • 2010
  • Background: Recent studies indicate that reactive oxygen species (ROS) are involved in persistent pain, including neuropathic and inflammatory pain. Since the data suggest that ROS are involved in central sensitization, the present study examines the levels of activated N-methyl-D-aspartate (NMDA) receptors in the dorsal horn after an exogenous supply of three antioxidants in rats with chronic post-ischemia pain (CPIP). This serves as an animal model of complex regional pain syndrome type-I induced by hindpaw ischemia/reperfusion injury. Methods: The application of tight-fitting O-rings for a period of three hours produced CPIP in male Sprague-Dawley rats. Allopurinol 4 mg/kg, allopurinol 40 mg/kg, superoxide dismutase (SOD) 4,000 U/kg, N-nitro-L-arginine methyl ester (L-NAME) 10 mg/kg and SOD 4,000 U/kg plus L-NAME 10 mg/kg were administered intraperitoneally just after O-ring application and on the first and second days after reperfusion. Mechanical allodynia was measured, and activation of the NMDA receptor subunit 1 (pNR1) of the lumbar spinal cord (L4-L6) was analyzed by the Western blot three days after reperfusion. Results: Allopurinol reduced mechanical allodynia and attenuated the enhancement of spinal pNR1 expression in CPIP rats. SOD and L-NAME also blocked spinal pNR1 in accordance with the reduced mechanical allodynia in rats with CPIP. Conclusions: The present data suggest the contribution of superoxide, produced via xanthine oxidase, and the participation of superoxide and nitric oxide as a precursor of peroxynitrite in NMDA mediated central sensitization. Finally, the findings support a therapeutic potential for the manipulation of superoxide and nitric oxide in ischemia/reperfusion related pain conditions.

Differential role of endothelium in hawthorn fruit extract-induced relaxation of rat cerebral, coronary, carotid, and aorta

  • Chan, Hoi Yun;Chen, Zhen-Yu;Yao, Xiaoqiang;Lau, Chi-Wai;Zhang, ZeSeng;Ho, Walter Kwok Keung;Huang, Yu
    • Advances in Traditional Medicine
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    • v.2 no.2
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    • pp.87-93
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    • 2002
  • The present study was aimed to examine the role of endothelium in the relaxant effect of hawthorn fruit extract of Crataegus pinnatifida in four different types of rat arteries, posterior cerebral communicating artery, right descending coronary artery, common carotid artery, and aorta. In $9,11-dideoxy-11{\alpha}$, $9{\alpha}-epoxy-methanoprostaglandin$ $F_{2{\alpha}}$ (U46619)-preconstricted arterial rings except for aorta, the extract produced endothelium-independent relaxations with similar potency. This relaxation was unaffected by pretreatment with $100\;{\mu}M\;N^G-nitro-L-arginine$ methylester (L-NAME, the nitric oxide synthase inhibitor), $3\;{\mu}M$ 1H-[l,2,4]oxadiazolo$[4,2-{\alpha}]$quinoxalin-1-one (ODQ, the guanylate cyclase inhibitor), or $10\;{\mu}M$ indomethacin (the cyclooxygenase inhibitor). Putative $K^+$ channel blockers (charybdotoxin plus apamin or glibenclamide) did not affect the extract-induced relaxation in cerebral or coronary artery rings. In contrast, in rat aortic rings the extract produced significantly smaller relaxant response in endothelium-denuded rings than that in endothelium-intact rings. Pretreatment with L-NAME or ODQ abolished the extractinduced endothelium-dependent aortic relaxation, whilst indomethacin $(3\;{\mu}M)$ had no effect. The present results indicate that hawthorn fruit extract possesses a vasorelaxing effect in cerebral, coronary and carotid arteries and this effect is independent of the presence of a functional endothelium. However, the extract-induced endothelium-dependent relaxation in rat aorta was mediated through endothelial nitric oxide and cyclic GMP-dependent mechanisms, suggesting that active components in the extract may act on endothelium to stimulate release of nitric oxide in large conduit arteries of the rats.

Native Plants of the Islands of Chungcheongnam-do (충남 도서지역의 민속식물)

  • Son, Dong Chan;Park, Beom Kyun;Kim, Tae Hoon;Kang, Hyen Mo;Kim, Tei;Kim, Kyun Tae;Ko, Sung Chul
    • Korean Journal of Plant Resources
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    • v.25 no.5
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    • pp.603-623
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    • 2012
  • This study was carried out in order to catalogue the native plants of 17 islands of Chungcheongnam-do Province from March to October, 2011. 905 pages of field notes relating to the native plants were collected from approximately 50 local inhabitants, and were subsequently analysed. The identified native plants were of 274 taxa, composed of 246 species, 3 subspecies, 22 varieties and 3 forms of 219 genera under 84 families. In accordance with their usage, they were classified into; 169, edible; 134, medicinal; 67, ornamental; 17, spice; 7, aroma; 7, fuel; 6, oil; 5, dye; 4, nectar; 3, fiber; 1, resin; 26, other plants. Coincidence degree dependent on age between the standard name and the local name was the highest at 50's, and the lowest at 60's.

The research on the disease classifications of the traditional medicine in Korea (한국 한의학 질병사인분류 체계에 관한 연구)

  • Choi Sun-Mi;Park Geong-Mo;Shin Min-Kyu;Shin Hyeun-Kyoo
    • Journal of Society of Preventive Korean Medicine
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    • v.4 no.2
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    • pp.93-107
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    • 2000
  • Korea follows the Korea standard classification of disease and causes of death according to the ICD(international classification of disease) Oriental medicine began to of officially follow the classification of disease for using the Korean classification of diseases in 1972. The classification of OM(oriental medicine) has changed in shape experiencing two amendments. The largest difficulty was to overcome the different names of diseases between OM and ICD. A one-to-one correspondence of the name of a disease between OM and ICD is impossible So in the primary stage one-to-one and one-to-many correspondence was made. During the first amendment the international disease names were re-classified on the oriental medicine disease name's basis and at the same time the classification of OM was corresponded on a one-to-one basis to the ICD . During the second amendment this changed to many-to-many correspondence . Analyzing the history of classification of OM during the first and second amendments, it was discovered that establishment of the standards of classification, the unification of oriental medical terms, and overcoming the difference of disease names between the OM and ICD is necessary Also th classification and standardazation of OM must not stop as a single round. It must go on for a long time. The hosts of this project Korean oriental medical society and AKOM(association of korean oriental medicine) need to build a independant department which will supervise the classification project and monitor any problems to come up. Also a route through which suggestions can be taken in and new solutions can be brought up needs to be secured and an atmosphere in which studies can take place about the basis of classifications needs to be developed.

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