• The Korean Journal of Nuclear Medicine Technology
• /
• v.22 no.2
• /
• pp.101-104
• /
• 2018

Purpose Alpha fetoprotein(AFP) is a fetal serum protein that increases in germ cell tumors derived from liver cancer or egg yolk. AFP test has been used for screening of liver cancer, determination of tumor stage, determination of therapeutic effect, and fetal congenital malformations. The purpose of this study was to compare the results of the four kits, identify the advantages and disadvantages of each kit, and select the appropriate kits for our laboratory. Materials and Methods Blood samples were obtained from 89 patients attending the Seoul national university hospital. Experiments were carried out in accordance with manufacturer's instructions of four companies(A, B, C, D). The precision, recovery, linearity, and sensitivity test were performed for each kit. Results In case of the precision within the measurement, the CV value of the C kit was less than 5% at the low, middle, and high concentrations. The A, B and D kit's the CV value was less than 5% at the concentrations except the low concentration. The recovery rates of the A, B, C, and D kits were $100{\pm}15%$, $100{\pm}30%$, $100{\pm}16%$ and $100{\pm}14%$, respectively. All kits showed good linearity. Sensitivity was measured as 0.5 IU/mL for A, 0.4 IU/mL for B, 0.98 IU/mL for C, and 0.3 IU/mL for D. Conclusion The CV values of the four kits were within 10%, and the correlation coefficients were close to 1 for $R^2=0.978$, $R^2=0.992$ and $R^2=0.8957$. As a result, they are clinically available. Therefore, each laboratory should select the appropriate kit for their experiment's environment.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.7
• /
• pp.127-132
• /
• 2019

Influenza is an infectious disease caused by an influenza virus with symptoms of high fever and headache. Since influenza especially mutates into multiple subtypes in the carrier's body, it is a serious threat for mankind such as Spanish influenza. The treatment of influenza infection mandates the use of antiviral drugs through rapid diagnostic test. Generally, immunochromatography-based rapid influenza diagnostic tests are used for rapid diagnosis in an emergency. In this paper, we propose an influenza analysis algorithm based on image processing to examine a large number of patients suspected of being infected with influenza. Also, we propose a robust influenza analysis algorithm based on the joint cumulative mass function under varying radiometric conditions such as illuminant and exposure differences. Simulation results show that the proposed algorithm significantly reduces the error of influenza diagnosis under different radiometric conditions.

• Journal of the Microelectronics and Packaging Society
• /
• v.25 no.4
• /
• pp.59-66
• /
• 2018

In this paper, we analyzed the usefulness of single-structured printed circuit board (PCB) modeling by using numerical analysis to model the PCB structure applied to a package for semiconductor purposes and applying modeling assuming a single structure. PCBs with circuit layer of 3rd and 4th were used for analysis. In addition, measurements were made on actual products to obtain material characteristics of a single structure PCB. The analysis results showed that if the PCB was modeled in a single structure compared to a multi-layered structure, the warpage analysis results resulting from modeling the PCB structure would increase and there would be a significant difference. In addition, as the circuit layer of the PCB increased, the mechanical properties of the PCB, the elastic coefficient and inertia moment of the PCB increased, decreasing the package's warpage.

• Journal of Internet Computing and Services
• /
• v.20 no.5
• /
• pp.19-26
• /
• 2019

Recently, the importance of the internet of things (IoT) education has been emphasized due to the progress of research on IoT technology. Therefore, universities require an efficient IoT course. In this paper, we propose an undergraduate IoT course using the Bluetooth function of smartphone and Arduino kit. The proposed embedded IoT class uses the Bluetooth capabilities of the smartphone to connect Arduino and activate various sensors to encourage students to become interested in the class. According to students' midterm and final exam scores, students programming skills have been improved since students' projects were in progress during the course. Further, according to students' survey, the proposed IoT class is very effective in understanding the embedded IoT and 75% of the students satisfied with the proposed course.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.20 no.6
• /
• pp.41-50
• /
• 2020

This paper deals with the Braille Education System which complements the shortcomings of the existing Braille Learning Products. An application dedicated to the blind is configured to perform full functions through touch gestures and voice guidance for user convenience. Braille kit is produced for educational purposes through Arduino and 3D printing. The system supports the following functions. First, the learning of the most basic braille, such as initial consonants, final consonant, vowels, abbreviations, etc. Second, the ability to check learned braille by solving step quizzes. Third, translation of braille. Through the experiment, the recognition rate of touch gestures and the accuracy of braille expression were confirmed, and in case of translation, the translation was done as intended. The system allows blind people to learn braille efficiently.

• Journal of Practical Agriculture & Fisheries Research
• /
• v.22 no.1
• /
• pp.79-85
• /
• 2020

The current study is the first paper on FPT(failure of passive transfer) of horse population in Korea. The object of this study was to comparison of immune status normal and patient horses. Failure of passive transfer is the most common immunodeficiency disorder of horses. Twenty-two foals and 18 horses from Jeju of the equine hospital were diagnosed with the SNAP Foal IgG Test Kit. All adult horses had normal immune functions (≥800 mg/dl). Thirteen of the 22 newborn babies (59%; ∠800 mg/dl) had a weak immune function but recovered and survived after treatment. Nine of these 22 are horses with strong immunity (≥800 mg/dl), indicating that high IgG concentrations in the blood can cause infectious diseases. There were a total of six dead, four of which were infectious diseases. In addition, early identification of infectious diseases in newborn foals is expected to help prepare systematic health management measures for the development of the disease.

• The Journal of the Korea Contents Association
• /
• v.22 no.1
• /
• pp.310-323
• /
• 2022

This paper studies how the nature of educational programs run by public art museums in South Korea have been influenced by the COVID-19 pandemic, as well as to what extent the pandemic has caused operational problems for these museums. It, in effect, unveils the new museum culture of the COVID-19 era. It finds that the number of educational programs at the eight museums in Korea selected for this study has decreased 34% since the start of the COVID-19 pandemic. The number of online educational programs, educational brochures and art kits at six of the museums has also increased by 70% compared to before the COVID-19 pandemic. Additionally, 'untact' programs thought up and created by artists have been gradually developing at certain art museums in South Korea, while VR/AR educational programs have been developing at museums in the Seoul Metropolitan Area. As such, this study reveals the changing characteristics of museum educational programs and the new museum educational culture in the COVID-19 era with the hope of opening up discussion about the future direction these programs will take.

• The Journal of the Korea Contents Association
• /
• v.22 no.2
• /
• pp.770-781
• /
• 2022

Korea's aging population is rapidly increasing, but there has been little research into senior-friendly foods. Therefore, this study aimed to provide basic data for the development of senior-friendly Home Meal Replacement(HMR) foods by conducting a survey among elderly and middle-aged persons highly likely to purchase senior-friendly foods in the near future. Study findings showed that the level of HMR purchase was higher among the middle-aged, many subjects preferred products requiring simple cooking, and a higher proportion of subjects purchased them offline. Five HMR selection attributes were identified, and dietary lifestyles were classified into four categories. Through a cluster analysis, 3 groups based on level of involvement were identified: high-level, mid-level, and low-level. Napping^® analysis showed that subjects classified food products into HMR and meal kits, and into products with a clear broth and products with a thicker broth. The study findings are expected to help suggest a differentiating approach in developing senior-friendly HMR foods.

• Journal of the Korean Dietetic Association
• /
• v.29 no.3
• /
• pp.123-139
• /
• 2023

In this study, a survey was conducted on the development of meal kits for children's foodservice to increase the convenience of the cooking process. It was performed among the foodservice managers in the 141 children's foodservice facilities registered in the Center for Children's Foodservice Management about meal-kits in Changwon areas. The survey results were analyzed according to the children's foodservice scale type. The biggest problem in a foodservice system was "difficult to purchase food ingredients directly every week" (38.4%) in small-scale children's foodservices, and "difficult to use the served menu without modification" (38.2%) in institutional children's foodservices (P<0.001). The most important factor when choosing the meal kit was "quality" (41.1%). Respondents on having an experience with using the meal kit were low at 34.8%, and the reasons for not using the meal kits were "expensive" (67.3%) and "not fresh food ingredients" (18.4%). The main reasons for not using children's foodservice meal kits were "expensiveness" (64.4%) and "necessity of adding disinfection process" (16.1%). Most of the reasons for not wanting to use children's foodservice meal kits were that they did not trust the safety of the meal kits. The use of meal kits in children's foodservices may reduce the preparation process and increase the efficiency of foodservice although the safety and quality of meal kits should be guaranteed. The appropriate hygiene management standards need to be set, and HACCP should be applied to develop meal kits for children's foodservices.

• Applied Chemistry
• /
• v.15 no.1
• /
• pp.17-20
• /
• 2011

A disposable light exposure detector kit has been developed by UV curing of a hydrogel material. The devised light exposure detector kit consisted of light sensitive structures, bottom plate, character sheet and sticky back plate. A light exposure detector kit has a serial light sensitive structures that contain various light sensitive dyes such as rhodamine and fluorescein. The light sensitive structure composed of UV curable hydrogel polymer material as a supporing material and photosensitive dye in a certain concentration. The fabrication procedure of the ligh exposure detector kit is very simple and fast due to UV curing procedure of a photopolymerizable hydrogel material such as poly(ethylene glycol) methyl ether acrylate (PEGMEA) and poly(ethylene glycol) diacrylate (PEGDA) with a photosensitive dye. By the proposed fabrication method, various size and shape of a light exposure detector kit could be fabricated using a flexible elastomer mold. Due to a fast and inexpensive fabrication method, the light exposure detector kit could be use a single use for various industrial applications. According to light irradation, the light sensitive structure on a light exposure detector kit could be lose its color by decomposition of a photosensitive dye chemical in the structure. Thus the amount of the exposed light on a substrate could easily be recognised by changing color or transparency of the structure.