• Journal of the Institute of Electronics Engineers of Korea SP
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• v.49 no.3
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• pp.60-66
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• 2012

In this paper, we propose abandoned object detection algorithm. When abandoned object was occluded other object, the existing methods cannot detect abandoned object because those methods are not able to estimate the location of abandoned object. In order to overcome this problem, the proposed algorithm extracts the corners around abandoned object. The detected corners are linked to center of abandoned object called by supporters. We can then estimate the location of abandoned object by using supporters. Therefore, the proposed algorithm can detect and estimate the location of abandoned object, when abandoned object is occluded by other object. For this reason, the proposed algorithm can be applied to intelligent surveillance system to prevent bomb terror, which disguises as luggage or box.

• Journal of Physiology & Pathology in Korean Medicine
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• v.26 no.2
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• pp.166-174
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• 2012

To determine the effects of Mahaengeuigam-tang(MHEGT) on obesity, the obesity-related factors (gastrin, CGRP, ghrelin, glucagon-like peptide-1, insulin, orexin, leptin, serotonin, NPY) were investigated in the stomach, pancreas, brain of mice by immunohistochemical methods for 4 weeks after Mahaengeuigam-tang(MHEGT) administration. The change of boy weight decreased in MHEGT administered group than that of control group. The immunohistochemical density of the gastrin and CGRP positive cells on pylorus of stomach increased in MHEGT administered group than that of control group. The number of ghrelin immunoreactive cells on stomach decreased in MHEGT administered groups than that of control group. The immunohistochemical density of GLP-1 in the pancreas decreased in MHEGT administered group than that of control group. The immunohistochemical density of insulin positive cells in the pancreas decreased in MHEGT administered group than that of control group. The immunohistochemical density of orexin and NPY positive neurons in the diencephalon was slightly stronger in MHEGT administered group than that of control group. The immunohistochemical density of serotonin and leptin positive neurons was stronger in MHEGT administered group than that of control group. These results demonstrate that Mahaengeuigam-tang(MHEGT) increased the immunohistochemical density of factors related to appetite inhibitors, and decreased the immunohistochemical density of factors related to stimulator of food intake in stomach, pancreas and brain.

• Tuberculosis and Respiratory Diseases
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• v.63 no.3
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• pp.283-288
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• 2007

A gastrointestinal metastasis from lung cancer is rare and is quite often found during an autopsy. A 58-year-old man was admitted with left upper back pain and a mass in the left upper lobe on the chest radiograph. The transbronchial lung biopsy revealed an adenocarcinoma of the lung. A gastroduodenoscopy was carried out to evaluate the indigestion and epigastric discomfort. The duodenofibroscopy revealed bulging mucosa on the minor papilla of the duodenum. A metastasis to the duodenum from an adenocarcinoma of the lung was diagnosed by a duodenofibroscopic biopsy of the bulging lesion. We report this rare case of an adenocarcinoma of lung with a metastasis to the duodenum.

• Journal of Veterinary Clinics
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• v.31 no.3
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• pp.216-219
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• 2014

An 1-year-old, female, mixed-breed dog weighing 17 kg was referred for abrupt collapse. She had remarkable hypocalcemia and hyperphosphatemia, and survey radiographs revealed a severe gas-filled intestine. Treatment with serial injections of calcium gluconate was initiated promptly and most of the gastrointestinal distension disappeared after 4 h. However, the clinical signs were not resolved completely. The serum intact parathyroid hormone concentration was not elevated in the context of hypocalcemia, which suggested primary hypoparathyroidism. The clinical signs and laboratory abnormalities in the patient were resolved completely 3 days after administration of calcium gluconate and calcitriol. This case describes the unique presentation of severe gastrointestinal distension in a dog diagnosed with primary hypoparathyroidism.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.1
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• pp.75-86
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• 2014

Demand for the femtocell is largely credited to the surge in a more always best connected communication conscious public. 3GPP defines new architecture and security requirement for Release 9 to deal with femtocell, Home eNode B referred as HeNB. In this paper, we analyze the HeNB security with respect to mutual authentication, access control, and secure key agreement. Our analysis pointed out that a number of security vulnerabilities have still not been addressed and solved by 3GPP technical specification. These include eavesdropping, man-in-the-middle attack, compromising subscriber access list, and masquerading as valid HeNB. To the best of our knowledge, any related research studying HeNB security was not published before. Towards this end, this paper proposes an improved authentication and key agreement mechanism for HeNB which adopts proxy-signature and proxy-signed proxy-signature. Through our elaborate analysis, we conclude that the proposed not only prevents the various security threats but also accomplishes minimum distance from use-tolerable authentication delay.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39B no.1
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• pp.17-28
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• 2014

The increase of smartphone users have made mobile carriers offload increasingly congested traffic of 3/4G by providing Wi-Fi hot-spots in the public places such as coffee shops and subway stations. In the traditional authentication in WLAN, the users should convince the service providers that they are valid customers before they use WLAN services. Since the authentication protocol is designed for service providers. Even with the mutual authentication based on the IEEE 802.1X, which is supported by IEEE 802.11 standard, it is difficult to be convinced of that the service providers really have installed the WLAN APs, which users are confronted with. An attacker can install rogue APs that masquerade as legitimate APs by copying the SSID, MAC address, etc. in order to obtain users' private information. In this paper, we introduce a method of authenticating legitimate APs for smartphone users. And we show our proposal can be well utilized for the current Wi-Fi hot-spots as a security plug-in and prove it through our experiments.

• Journal of Digital Convergence
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• v.10 no.6
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• pp.341-347
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• 2012

Network Access Control system of medical asset protection solutions that installation and operation on system and network to provide a process that to access internal network after verifying the safety of information communication devices. However, there are still the internal medical-data leakage threats due to spoof of authorized devices and unauthorized using of users are away hours. In this paper, Network 2-Factor Access Control Model proposed for prevention the medical-data leakage by improving the current Network Access Control system. The proposed Network 2-Factor Access Control Model allowed to access the internal network only actual users located in specific place within the organization and used authorized devices. Therefore, the proposed model to provide a safety medical asset environment that protecting medical-data by blocking unauthorized access to the internal network and unnecessary internet access of authorized users and devices.

• Journal of Digital Convergence
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• v.10 no.2
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• pp.141-146
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• 2012

U-healthcare, which grafted advanced IT technology onto medical technology, is in the limelight because it can provide medical services at anytime and anywhere. U-healthcare system applied RFID technology for Implantable Medical Device (IMD), but patient's biometric information can be easily exposed to third parties. In this article, RFID-based U-healthcare authentication protocol is proposed to prevent illegal usage for personal biometric information exposed to the third patty. The proposed protocol guarantees patients' biometric information integrity as compounding random numbers between administrators and hospital/clinic managers, and uses continuous number SEQ and time stamp T to synchronize IMD/administrators and administrators/hospital managers. Also, to protect user's privacy from the third party, patients' biometric information can be safely guarded by managing patients' security identifiers by administrators.

• Journal of Physiology & Pathology in Korean Medicine
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• v.31 no.2
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• pp.138-144
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• 2017

The pharmacological rationale of Agastache rugosa (AR) or Pogostemon cablin (PC), which have been used in traditional Korean medicine to treat dampness pattern or syndrome in gastrointestinal tract, was investigated on the gastrointestinal disorders. In-vivo model studies that examined the effect on the gastrointestinal disorders of AR or PC were collected. They were classified into disease-induced in-vivo models or non-disease in vivo models. The target disease, animal species, induction method, administration, and outcomes (changes in morphological and histological parameter, or blood and fluid) of each study were analyzed. The therapeutic mechanism of AR or PC extract was evaluated by the induced diseases and the changes in outcomes. There were contradictory reports on gastrointestinal motility of AR or PC in disease non-disease in-vivo model. AR or PC inhibited gastrointestinal motility in disease model of increased gastrointestinal motility, while promoted motility in disease model of decreased gastrointestinal motility. AR or PC also inhibited inflammatory changes in gastrointestinal inflammation model. These results suggest that the bidirectional regulation of gastrointestinal motility and the improvement of gastrointestinal inflammatory disorders might underpin traditional therapeutic effect of AR or PC, that is effect to resolve dampness of gastrointestinal tract.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.42 no.4
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• pp.311-320
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• 2016

Kava (Piper methysticum, P. methysticum) is used as traditional herbal medicine for urogenital diseases, rheumatisms, gastrointestinal problems, respiratory irritations, and pulmonary pains. We identified a flavokavain C (FKC) from P. methysticum, which showed anti-inflammatory activity on nuclear factor ${\kappa}B$ (NF-${\kappa}B$)-dependent nitric oxide (NO) production and expression of inducible nitric oxide synthase (iNOS) in lipopolysaccharide (LPS)-induced RAW264.7 macrophages. FKC inhibited accumulation of reactive oxygen species (ROS), such as hydrogen peroxide, and was able to dose-dependently reduce the LPS-induced NO production and the expression of various inflammation-associated genes (iNOS, IL-$1{\beta}$, IL-6) through inhibition of NF-${\kappa}B$ and MAPKs (ERK and JNK). In conclusion, these results indicate that FKC may have the potential to prevent inflammation process including NF-${\kappa}B$ and MAPKs pathways, and it could be applicable to functional cosmetics for anti-inflammation and antioxidant properties.