• The Journal of Korean Physical Therapy
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• 제35권6호
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• pp.206-212
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• 2023

Purpose: This study aimed to compare the lasting effects of the flossing band technique, dynamic and static stretching on hamstring on range of motion (ROM), muscle activity, and proprioception to identify the most effective pre-exercise method for preventing injuries. Methods: Thirty participants were randomly assigned to the flossing band (FB), dynamic stretching (DS), and static stretching (SS) groups, with 10 subjects in each. Measurements included muscle activity of the biceps femoris vis surface electromyography, knee ROM and proprioception during active knee extension and flexion using a smart joint goniometer. Assessments were conducted before, immediately after, 15, and 30 minutes after each intervention. Results: Proprioception showed no significant differences among groups at any time point. Significant differences in knee ROM were observed in the FB group (except between 15 and 30 minutes after), DS group (except between immediately after and 15 minutes after, and between 15 and 30 minutes after), and SS group (except between before and 15 minutes after, and between before and 30 minutes after). Muscle activity in the FB (except between before and 30 minutes after, and between 15 and 30 minutes after) and SS (between before and immediately after, between immediately after and 30 minutes after, and between 15 and 30 minutes after) groups showed significant differences, while the DS group exhibited no significant changes. Conclusion: Although direct comparisons did not establish superiority, within-group analyses indicated that the flossing band technique exhibited longer-lasting effects than dynamic and static stretching, providing valuable insights for injury prevention program design.

• 가정간호학회지
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• 제30권2호
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• pp.141-154
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• 2023

Purpose: This study aimed to explore the social perception of visiting nursing before and after coronavirus disease (COVID-19). Methods: This survey-based study used online big data for comparative analysis by classifying the keywords related to visiting nursing searched on domestic portal sites before and after COVID-19. Results: According to the results of analyzing the Intertopic Distance Map based on Latent Dirichlet Allocation in this study, four topics were extracted, two each before and after COVID-19. The first topic before the COVID-19 period was termed "the expansion of visiting nursing subjects and services visiting nursing," while the second was termed "visiting nursing," which is related to customized welfare. The first topic after the COVID-19 period was termed "the suspension and resumption of visiting nursing services," while the second was "the development of a non-face-to-face home visit healthcare system". Conclusion: The results of this study can be used as useful reference data to contribute to future medical service delivery system reform policies starting at the end of COVID-19 and the revitalization of community care for visiting nursing.

• 동아시아식생활학회지
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• 제17권5호
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• pp.746-752
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• 2007

The purpose of this study was to investigate the effects of HACCP education on improvements of knowledge in school foodservice employees in Gyeonggi-do, particularly in Anyang, Ansan, Siheung and Hwasung City. A first and second questionnaire was answered both before and after HACCP education that was directed by a dietitian. The change in HACCP knowledge after education, as compared to before, was statistically significant(p<0.01). Specifically, the average score after education increased more than 30 points in CCP2 and CCP6, and more than 60 points in CCP3. Most of the school foodservice operations performed sanitary education once a month; however, they did not perform regular HACCP education. The fact that the level of sanitary knowledge was different after HACCP education than before suggests the possibility of improving the sanitary performance levels of foodservice employees through continual education.

• 한국과학교육학회지
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• 제16권4호
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• pp.417-428
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• 1996

The purposes of this study were to investigate what kinds of idea the children have after formal instruction in school, and to investigate what is the children's conceptual change on electric current after implementation of drill and practice type CAI program about electric circuit. The CAI program was developed by KEDI research project team the author of this article was joined. The subjects were 20 eleven yaers old(elementary fifth year) children sampled from a elementary school in Seoul, Korea. They had already learnt about electric circuits for two years before implementing this CAI program according to the formal science curriculum. The pretest were accomplished before implementing the CAI program, and posttest were accomplished a week after implementation of the CAI program. The results of this study are as follows: Even though they had studied electric circuits, only 5% of the students had scientific ideas before pretest, and even after drill and practice type CAI program only 30% of the students have changed their misconceptions into scientific conceptions.

• 국제물리치료학회지
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• 제9권2호
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• pp.1508-1512
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• 2018

This study was conducted to examine the effect of joint mobilization on forward head posture and to propose an effective method to improve correct body posture and balance. A total of eight patients from a Maitland-applied group (n=8) received mobilization therapy to increase the mobility of the cervical joint, with Maitland's movement grade III intensity for 30 seconds of treatment and 30 seconds of rest, for ten intervals, three times a week for four weeks. The craniovertebral angle (CVA) changes before and after the intervention with the Maitland technique were measured as $56.85{\pm}2.31^{\circ}$ before, $63.23{\pm}2.23^{\circ}$ two weeks after, and $64.98{\pm}1.27^{\circ}$ four weeks after joint intervention. There were significant CVA changes before and after the Maitland technique (P <.05). The results of this study suggest that the Maitland technique is useful for improving the head vertebral angle in patients with forward head posture.

• 한국항공운항학회지
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• 제28권4호
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• pp.164-170
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• 2020

Recently, the aviation industry faced a major crisis due to the impact of COVID-19. However, despite the sluggish passenger transportation, the cargo transportation sector is relatively maintained or increasing depending on the item. In this study, we will look at the trends before and after COVID-19, focusing on the cargo export field, which is a concern of the aviation industry. First, it analyzes the entire air cargo and then analyzes the trends of each item and country in detail. In particular, it examines the process of changes in air transport costs, which increased significantly immediately after COVID-19, and conducts future trends and prospects in the cargo export field. As a result of the study, some characteristics of air cargo exports before and after COVID-19 were found in an analysis by item and country, and transportation costs varied according to route distance.

• International Journal of Internet, Broadcasting and Communication
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• 제14권2호
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• pp.98-108
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• 2022

In this study, social network analysis was performed to compare and analyze changes in domestic tourism trends before and after the outbreak of COVID-19 in a situation where the damage to the tourism industry due to COVID-19 is increasing. Using Textom, a big data analysis service, data were collected using the keywords "travel destination" and "travel trend" based on the collection period of 2019 and 2020, when the epidemic spread to the world and became chaotic. After extracting a total of 80 key words through text mining, centrality was analyzed using NetDraw of Ucinet6, and clustered into 4 groups through CONCOR analysis. Through this, we compared and analyzed changes in domestic tourism trends before and after the outbreak of COVID-19, and it is judged to provide basic data for tourism marketing strategies and tourism product development in the post-COVID-19.

• 지역사회간호학회지
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• 제12권1호
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• pp.115-124
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• 2001

This study was designed to investigate the effects of a smoking cessation school program on attitudes towards smoking cessation, the subjective norm, perceived behavioral controls, the intent to cease smoking and smoking behavior. Also included was the goals of the program itself. Study subjects were 80 adolescent smokers who at least attended the smoking cessation school program without absence. had smoked one cigarette at the time of the first study before the program and attended the first. second. and third studies (The study was conducted from September 26. to December 21. 1999. a period of 59 days). Data collection was performed using the TPB questionnaire which was developed by Jee Yon-Ock(1994). The survey included questions covering the intended areas of study mentioned above. The first data was collected during the first day of the five day program. The second survey was conducted immediately after the last day of the program and the last survey was four weeks later. Data was analyzed with a SAS/PC program including N. %. a paired t-test. The results were as follows; 1. After the program. the scores representing attitude towards smoking cessation (before program: 14.5. after program: 16.8) and perceived behavioral control (before program: 1.2. after program: 2.1) rose significantly, but the scores for attitudes towards the subjective norm and the intent to cease smoking were not notably different. 2. After the program. the frequency of daily smoking fell significantly (before program: 5.7 cigarettes. after program: 3.2 cigarettes). In conclusion, the five day smoking cessation school program increased attitude. perceived behavioral control and decreased smoking behavior but did not influence subjective norm, smoking cessation intention. Thus, further study is required to better evaluate the effects of the program and to improve any shortcomings.

• 한국가금학회지
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• 제16권1호
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• pp.23-28
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• 1989

난백단백질의 농도와 당류의 첨가 수준이 난백의 열감수성에 미치는 영향을 검토하기 위하며 가열처리.($60^{\circ}C$, 5분간) 전후 난백의 기능성을 측정하였으며 그 결과는 다음과 같다. 난백단백질의 농도 8.3%까지는 가열처리 전후 난백의 탁도가 감소하였으나 희석됨에 따라 증가하다가 3.32% 이하에서는 다시 감소하였다. 가열처리 전후 난백의 기포력은 단백질 농도 8.3%에서 가장 높았으며 희석됨에 따라 점차 감소하였고 기포안정성은 단백질 농도가 희석됨에 따라 점차 저하하였다. 난백에 sucrose를 첨가할 경우 탁도의 변화가 없었으나 가열처리의 경우에는 sucrose의 첨가량에 따라 점차 감소하였다. 기포력은 sucrose 5%이상 첨가 시 감소하였으며 가열처리의 경우에는 sucrose 2.5%이상 첨가 시 점차 감소하였다. 기포안정성은 sucrose를 5%이상 진가할 경우 점차 증가하였으나 가열처리한 경우에는 sucrose의 첨가량에 따라 증가하였다. Glucose의 첨가량에 따라서는 탁도가 높아졌으며 가열처리 시에는 변화가 없었다. 기포력은 Glucose의 첨가량에 따라 점차 감소하였으며 가열처리의 경우에는 5%이상 첨가 시 다소 감소하였다. 기포안정성은 가열처리 전후 glucose의 첨가량에 따라 증가되었으며 sucrose의 첨가시 보다 크게 증가되었다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제27권2호
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• pp.157-161
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• 2001

The purpose of this study cephalometrically evaluated changes in the posterior airway space for patients with obstructive sleep apnea syndrome(OSAS) before and after surgical advancement of the maxilla and mandible. The change in calculated airway resistance was correlated with the respiratory disturbance index(RDI). Twenty cephalometric radiographs were traced before and after surgery to determine the posterior airway area and calculate resistance. Polysomnograms of each patient were obtained before and after surgery. All patients had a decrease in calculated airflow resistance in the airway. The mean amount of resistance was 865.15 before surgery, decreasing to 192.65 after surgery (p<0.01). Eighty-five percent of the patients experienced improvement in their RDI. Reduction in the RDI appears to be due to an increase in the posterior airway space and decrease in flow resistance.