• Proceedings of the KSME Conference
• /
• 2007.05a
• /
• pp.614-619
• /
• 2007

The importance of simulation of plastic flow in the injection mold is increasing as the parts are more complex, but the small-scale enterprises can't afford to invest for the infra individually. CAE (Computer Aided Engineering) service was naturally born based on these needs. This paper presents the engineering collaboration model between the large and the small/medium enterprises in the field of injection molds. Based on the engineering collaboration hub and CAE service, small-scale enterprises could research the necessary technology and develop the proper products. The analysis results of CAE are provided by the integrated visualization system on the web. This paper also deals with the delivery shorting process of CAE service for electric/electronic parts which should meet the needs of customers as soon as possible.

• The Journal of the Korea Contents Association
• /
• v.10 no.8
• /
• pp.111-118
• /
• 2010

The OSGi platform is a Java-based component platform that is being widely used from environments for the application development to enterprise software. The OSGi platform provides dynamic and transparent installation for open environments. However, it open new attacks so that many researches try to solve OSGi vulnerability. Security flaws in OSGi platform are categorized two parts: the JVM and the OSGi platform itself. We focus on vulnerability by OSGi platform itself, particularly service injection. We identify the service injection attack and suggest secure mechanisms to prevent the attack. Those mechanisms are implemented, providing a few modification to the Knopflerfish OSGi implementation and are evaluated through comparing with existing mechanisms.

• Korean Journal of Veterinary Service
• /
• v.41 no.4
• /
• pp.251-255
• /
• 2018

Bordetella bronchiseptica and Pasteurella multocida are two main pathogens responsible for atrophic rhinitis (AR), which causes considerable economic losses in swine industry worldwide. Commercial vaccine has been widely used to prevent the damage from AR in Korea. Adverse effects of vaccination at the injection site have been reported, which results in the numerous complaint from farms. However, data on about local reaction at the injection site remains limited. In this study, we compared the local adverse effects of three commercial vaccines following intramuscular injection. The results showed that no gross lesion was founded at the injection sites of all three vaccines. In histopathologic examination, a various level of lesions was identified. Especially, the local reaction of vaccine including saponin as an adjuvant showed the lowest level of histopathological lesions, when compared to those of oil-based and vitamin E-based vaccines. Therefore, this study would provide the information about the extent of local reaction at the injection site and help the farmer to select AR vaccine in order to avoid adverse reaction due to vaccination.

• Korean Journal of Veterinary Research
• /
• v.46 no.2
• /
• pp.149-158
• /
• 2006

To determine the effects of ${\beta}$-carotene on the control of mastitis in dairy cows during the dry period, 38 dairy cows (18 mastitic cows and 20 healthy cows) were administered with 5 ml of ${\beta}$-carotene (30 mg/ml) intramuscularly twice (4 week intervals). Blood samples were taken from the cows before the injection and two weeks after the second injection, respectively, and were measured for the proportion of lymphocyte subpopulations and lymphocyte proliferation responses. With ${\beta}$-carotene injection, the proportion of cells expressing BoCD2, BoCD4 and B and N cells increased in healthy cows. In the presence of mitogens, lymphocytes from healthy cows showed significantly higher proliferation responses after ${\beta}$-carotene injection than before (p < 0.05), The somatic cell counts in ${\beta}$-carotene injected group decreased from 1,001,00 cells/ml at dry off to 647,000 cell/ml and 447 cells/ml at the stage of first and second weeks after calving, respectively (p < 0,05), This study indicated that ${\beta}$-carotene as a nonspecific immunostimulator could have a definite role for the prevention of intramammary infections in dairy cows at dry period.

• Korean Journal of Veterinary Service
• /
• v.43 no.3
• /
• pp.129-137
• /
• 2020

In this study, we applied biodegradable drug delivery carries (BDDC) for food-and-mouth (FMD) vaccination. After FMD vaccination using BDDC, we estimated the percentage inhibition (PI) of antibody, decomposed patterns, and histopathologic features of BDDC. PI of antibody was higher than 50 at two weeks after injection and sustained positive PI until 10 weeks after injection. BBDC injection group showed significantly an increased pattern of blood monocyte at two and three weeks after injection. According to the Micro CT, micro-cracks were observed at two weeks after injection and the morphology of BDDC was lost at four weeks after injection. For histopathological examination, acute inflammation with neutrophil infiltration and micro-metallic residues were observed around BDDC until four weeks after injection and inflammatory responses gradually decreased at 10 weeks. Based on our experiment, BDDC is considered as an alternative way to vaccine injection for veterinary applications. Our study can be used as basic data for the drug delivery system using biodegradable metals in the future.

• Journal of Power System Engineering
• /
• v.20 no.2
• /
• pp.32-42
• /
• 2016

Under part load condition of spark-ignition engine, pumping loss had great effect on engine efficiency. To reduce pumping loss, the study designed spark-ignited engines to make direct spray of gasoline to combustion chamber. In spark-ignited direct-injection engines, ignition probability is important for successful combustion and flame propagation characteristics are also different from pre-mixed combustion. This study designed a visualization testing device to study ignition probability of spark-ignited direct-injection LPG fuel and combustion flame characteristics. This visualization device consists of combustion chamber, fuel supply system, air supply system, electronic control system and data acquisition system. Ambient pressure, ambient temperature and ambient air flow velocity are important parameters on ignition probability of LPG-air mixture and flame propagation characteristics, and the study also found that sprayed LPG fuel can be directly ignited by spark-plug under proper ambient conditions. To all successful cases of ignition, the study recorded flame propagation image in digital method through ICCD camera and its flame propagation characteristics were analyzed.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.11 no.4
• /
• pp.421-426
• /
• 2016

Fluid is normally used so that certain drug can be administered to patients for certain period of time. There are many incidents in which patients or guardians need to call upon medical staff after estimating the time of fluid injection termination. In case fluid injection is terminated during certain period such as sleeping time or others, it may cause more fatigue for either patients or guardians. Also, it may lead to ineffective work as medical staff needs to monitor the quantity of fluid several times in order to check the time of fluid injection termination. Therefore, the purpose of this study is to propose LBS system combined of minimum equipment and active RFID to monitor the level of fluid in order to solve abovementioned problems. Also, it is expected to enhance the quality of medical service with service in which real-time monitoring of fluid quantity and patient location is conducted to provide accurate information to either patients, guardians, or medical staff(nurse) so that medical staff can locate and see patients at the time of fluid injection termination.

• Clinics in Shoulder and Elbow
• /
• v.24 no.3
• /
• pp.166-171
• /
• 2021

Background: This study aims to compare the clinical outcomes of steroid injections during the rehabilitation period after arthroscopic rotator cuff repair (ACRC). Methods: Among patients who underwent ARCR, 117 patients who met the inclusion and exclusion criteria were enrolled. Pain and range of motion (ROM) recovery at the 3-, 6-, and 24-month follow-up visits and functional outcome at the 24-month follow-up were compared between 45 patients who received ultrasound-guided subacromial steroid injection at postoperative week 4 or 6 and 72 patients who did not. Functional outcome was assessed using the American Shoulder and Elbow Surgeons (ASES) score and Constant score. Healing of the repaired tendon and retear were observed at the 6-month follow-up via magnetic resonance imaging (MRI) or computed tomography (CT) arthrography. Results: At the 3-month follow-up, the steroid injection group showed lower visual analog scale scores than the control group (p<0.05) and showed faster recovery of forward flexion and internal rotation (p<0.05). From the 6-month follow-up, the two groups did not show differences in pain and ROM, and the ASES score and Constant score also did not significantly differ at the 24-month follow-up. The two groups did not differ in retear rate as determined by MRI or CT arthrography at the 6-month follow-up. Conclusions: This study demonstrated that ultrasound-guided subacromial steroid injection at 4 or 6 weeks after ARCR leads to quick pain reduction and ROM recovery until 3 months after surgery. Therefore, subacromial steroid injection is speculated to be an effective and relatively safe method to assist rehabilitation.

• Korean Journal of Veterinary Service
• /
• v.29 no.3
• /
• pp.287-295
• /
• 2006

This study was conducted to evaluate effects of honeybee venom injection (VI) collected using bee venom collector compared to that of bee venom accupuncture (VA) on the body weight gain, growth rate and hematological characteristics of piglets. One hundred sixty two piglets from 15 sows were allocated in to three groups; honeybee venom subcutaneous injection groups (97 piglets from 9 sows), honeybee venom accupuncture -treated group (31 piglets from 3 sows), and non -treated control group and 30 days after birth. Honeybee venom subcutaneous injection groups divided by a syringeful; group A (0.5, 1.0, 1.5, 2.0 mg ), group B (1.0, 1.0, 1.0, 1.0 rug), and group C (1.0, 1.5, 2.0, 2.5 mg). During 60 days experiment, weight gain and survivability in VI and VA treatment of pigs were higher compared with control. Survival rate during the experiment period was 96.8% in group C, 93.2 % in VA and 86.7 % in control. Weight gain and survivability were effected by VI and VA. WBC, RBC, lymphocytes, monocytes, serum total protein, and albumin concentration were not affected by VI and VA. Serum IgG concentration of VI and VA treatments were greater than that of control. In conclusion, VI and VA were effective for improving growth performance and to increase the concentrations of blood Ig G in growing pigs. No statistical differences were found for VI and VA. These results suggested that the treatment of honeybee venom injection collected using bee venom collector could be used effectively for the increase productivity.

• Journal of Internet Computing and Services
• /
• v.9 no.5
• /
• pp.23-34
• /
• 2008

The number of web service user is increasing steadily as web-based service is offered in various form. But, web service has a vulnerability such as SQL Injection, Parameter Injection and DoS attack. Therefore, it is required for us to develop Web IDS system and additionally to offer Rule-base intrusion detection/response mechanism against those attacks. However, existing Web IDS system didn't correspond properly on recent web attack mechanism because they didn't including suitable pre-processing procedure on huge web log data. Therfore, we propose an efficient web log pre-processing mechanism for enhancing rule based detection and improving the performance of web IDS base attack response system. Proposed algorithm provides both a field unit parsing and a duplicated string elimination procedure on web log data. And it is also possible for us to construct improved web IDS system.