• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.14 no.8
• /
• pp.3295-3311
• /
• 2020

With the wide application of hyperspectral images, it becomes more and more important to compress hyperspectral images. Conventional recursive least squares (CRLS) algorithm has great potentiality in lossless compression for hyperspectral images. The prediction accuracy of CRLS is closely related to the correlations between the reference bands and the current band, and the similarity between pixels in prediction context. According to this characteristic, we present an improved CRLS with adaptive band selection and adaptive predictor selection (CRLS-ABS-APS). Firstly, a spectral vector correlation coefficient-based k-means clustering algorithm is employed to generate clustering map. Afterwards, an adaptive band selection strategy based on inter-spectral correlation coefficient is adopted to select the reference bands for each band. Then, an adaptive predictor selection strategy based on clustering map is adopted to select the optimal CRLS predictor for each pixel. In addition, a double snake scan mode is used to further improve the similarity of prediction context, and a recursive average estimation method is used to accelerate the local average calculation. Finally, the prediction residuals are entropy encoded by arithmetic encoder. Experiments on the Airborne Visible Infrared Imaging Spectrometer (AVIRIS) 2006 data set show that the CRLS-ABS-APS achieves average bit rates of 3.28 bpp, 5.55 bpp and 2.39 bpp on the three subsets, respectively. The results indicate that the CRLS-ABS-APS effectively improves the compression effect with lower computation complexity, and outperforms to the current state-of-the-art methods.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.2
• /
• pp.373-379
• /
• 2023

Creative teaching methods can be beneficial in enhancing creativity and self-directed learning abilities in the classroom. However, there may be some specific learning tasks where applying creative teaching methods can be difficult. This is because students may not have completed the necessary prerequisite learning before performing the learning task, leading to low reliability of task results or meaninglessness. This study aims to propose teaching methods that enhance creativity and self-directed learning ability when performing learning tasks that may not have sufficient prior learning. To achieve this, we present a case of applying creative teaching methods to a learning task called "national threats". As a research procedure, we provide a suitable teaching method model and detailed procedures for the given learning task, and apply them in actual classes. The results showed that applying the presented teaching methods for the learning task produced meaningful academic achievements. This study can be valuable not only for enhancing creativity in education but also for interdisciplinary research in fields such as education and national security.

• Journal of Industrial Convergence
• /
• v.22 no.5
• /
• pp.39-48
• /
• 2024

Due to COVID-19, much research has been conducted on learning loss and educational gaps due to the postponement of the start of school and prolonged online distance learning, and most of the research has focused on the phenomenon of educational gaps. If a pandemic situation like this occurs in the future, fundamental policies are needed to resolve the educational gap. A fundamental solution requires not only an understanding of the educational gap phenomenon, but also the structure behind the phenomenon. Therefore, from a structuralist perspective, this study sought to model the educational gap caused by COVID-19 as a prototype of systems thinking and identify its structure. In addition, we looked at the unintended consequences resulting from policies aimed at resolving existing educational gaps. In order to respond to similar disaster situations in the future, policies for resolving the digital gap, support for basic academic skills, quality improvement for distance learning, and self-directed learning were discussed based on the structure of this study.

• Korean Security Journal
• /
• no.19
• /
• pp.139-163
• /
• 2009

The purpose of this study is to build up the expert system with more subdivided qualifications and improved qualities with the development of the security industry. And also it is to analyze a survey measuring how satisfied they are with curriculum, teaching faculty, educational administration, facilities among 439 private guards completing a course in Korea private guard educational institution and registered in the National Police Agency in Seoul, Gyeonggi, Chungcheong, Gyeongsang, Jeolla province. For this, SPSS(Statistical Packages for Social Science) 15.0 Version was adapted to analyze and other analysis methods used for this study are like these: frequency, reliability analysis, regressive analysis, moderated multiple regression, post hoc test for categorizing the performance changes, looking into the characteristics, examining closely job performance, intention to quit one's job, and inquiring into the influence how satisfaction measurement at education training satisfaction makes on carrying out one's job. Firstly, The Effect Satisfaction at The Program has on Performing One's Duty With respect to job performance, curriculum, educational administration, teaching abilities have positive influences on it. On the other hand, with respect to quitting one's job, curriculum just makes positive effects on leaving one's work statistically. It indicates that systematic and effective curriculum, administration, teaching faculty or contents with high quality rather than just education facilities would make the task performance excellent and satisfaction at the program well in regards to making effects on the task performance. Secondly, The Effect Satisfaction at The Program has on Performing One's Duty with Social Supports Despite being the fact that statistically any strong correlation between curriculum and social supports, one between education facilities and social supports, one between teaching abilities and social supports, and one between educational administration and social supports do not have influences on carrying out job performance, it turns out that satisfaction at the program and social supports make positive effects on performing one's task. In conclusion, the entire social system and support need to be improved and some institutions appropriate for satisfaction at the program should be established as soon as possible.

• Journal of the Korea Convergence Society
• /
• v.5 no.4
• /
• pp.113-119
• /
• 2014

Fire fighters should eat their meal very fast in order to arrive in the emergency scene on time. The purpose of the study is to investigate the influence of eating speed on the health of the fire fighters. The subjects were fire fighters, National maritime police, soldiers, public officials, university students, and company employees. The fire fighters had the shortest eating time of 8 minutes 29 seconds, and eating speed of National maritime police was 8 minutes 33.17 seconds, and public officials had 12 minutes 49.33 seconds. Soldiers had 10 minutes 15 seconds, university students had 14 minutes 15 seconds, and company employees had 16 minutes 51 seconds in eating their meals. The previous studies said that eating speed had influenced on the metabolic syndrome and the survey on the American fire fighters showed that the fire fighters gained 7.7 pounds during the past 8 years. Through this study, it is necessary to implement the right eating habit that is able to slow down the eating speed in the Korean fire fighters. The Fire Academy should provide the right eating habit education program to the fire fighters.

• Journal of the Society of Disaster Information
• /
• v.10 no.2
• /
• pp.288-293
• /
• 2014

The purpose of this study was to provide response plans against acts of suicide bomb using utilize unmanned aircrafts to prevent large losses of lives such as the terrorist attacks of September 11. As the result, First, this research suggests revising the definition and categorization of utilizing unmanned aircrafts and legislating the Anti-terrorism law. Second, it is needed to establish the proper social safety network through terrorism response management integrated system against the terror of related organization. Third, suicide bomb using utilizing unmanned aircrafts can be occurred because it is possible to make bomb and open web site for terrorism without connection with terrorist organization because of universal use of Internet. In response to this, it is needed to make a law which can block the use and open of illegal site and contents. Forth, the increasing number of foreigners and immigrants can make conflicts, and cause the foreigner's anti-korea feeling and the citizen's anti-cultural diffusion. Therefore, it is needed for the citizen to change and improve the awareness of them, and the change of social politics.

• Journal of the Korean Geographical Society
• /
• v.30 no.4
• /
• pp.389-410
• /
• 1995

Large metropolitan areas in the US are distinguished by highly fragmented fiscally independent suburban municipalities and special districts. The suburban fragmentation implies the congregation of similar socio-economic groups escaped from central cities and the disparity of geographical resources among local government jurisdictions. This study examines St.Louis County suburbs as a case study for the implictions of suburban governmental fragmentation and the fiscal disparities across local governmental boundaries by analyzing their relationship with public service provision using police and public school services as examples. The distribution of fiscal resources across political boundaries, the processes which created them, and public service inequalities reproduced from the disparity of fiscal resources reveal the causes and consequences of suburban governmental fragmentation. The central part of suburban fragmentation is the segregation of public goods consumption reproduced from the disparity of local fiscal resources, and it acts as a basic geographical segregating force in the suburban spatial organization.

• The Korean Journal of Emergency Medical Services
• /
• v.10 no.3
• /
• pp.5-20
• /
• 2006

Purpose: This study examines the degree of empowerment recognized by the 1st paramedics and the trend of their critical thinking, analyzes correlations between empowerment and critical thinking to reveal whether there is statistically significant difference between them and then is to provide basic materials necessary for research on empowerment and critical thinking. Method: This study distributes 105 structured self-report questionnaires to the 1st emergency medical technicians working at fire fighting police boxes, general hospitals, clinics and emergency medical information centers in G Metropolitan City and J province from April 29 to May 28, 2006, collects their responses directly and analyzes results with t-test, F-test(ANOVA) and Pearson's Correlation Coefficient. Result: 1. First, average score of empowerment of subjects was 4.68 out of 6 and according to scores by area, capacity 5.98 was highest, followed by significance 5.41, self- determination 4.44 and effectiveness 3.79. 2. degree of empowerment according to general characteristics of subjects showed statistically significant differences in final education(F=2.714, p= .049), level of salary (F=3.298, p= .014) and satisfaction of current job (F=5.399, p= .001). 3. average score of critical thinking of subjects was 3.28 out of 7 and according to areas, no bias 3.95 was highest, followed by maturity 3.68, structure 3.35, inquisitiveness 3.11, pursuit of truth 3.07, critical thinking and self-confidence 3.00, analyticity 2.98. 4. degree of critical thinking by general characteristics of subjects showed statistically significant differences in age(F=2.577, p= .041), final education (F=7.877, p= .000), current workplace (F=3.513, p= .018), level of salary(F=4.628, p= .002), satisfaction with current job(F=6.879, p= .000) and intention to transfer current job(t=15.21, p=.000). 5. as a result of correlations between empowerment and critical thinking of subjects, Pearson correlation coefficients between whole empowerment and critical thinking were r= .21, p=.013. Conclusion: It is considered that the 1st paramedic managers must seek how to keep and manage empowerment and development of education and training program which can enhance critical thinking is needed. Further, emergency educators must develop educational program based on the concept of empowerment to establish early awareness of a desirable organization culture and increase understanding of empowerment in the process of education.

• Journal of the Korean Society of Radiology
• /
• v.16 no.7
• /
• pp.815-824
• /
• 2022

The current radiation safety management system is also applied to radiation practices at universities. The application of the law raised concerns about poor radiation practice education and hindering the development of radiology. Accordingly, the Korean Radiology Professors Association needed to grasp the reality of the management system for radiation practice education at each university and the current radiation safety management system in the department of Radiological science. So, a survey was conducted on heads of radiological science departments across the country. Through the survey, it was found that the current application of the Nuclear Safety Act to radiation safety management in the department of Radiological science is excessively restrictive and not very effective. In addition, radiology practice education for the purpose of training health and medical professionals should be controlled by the Ministry of Health and Welfare and the Korea Centers for Disease Control, but there is a problem of being supervised by the Nuclear Safety and Security Commission. Therefore, in this study, as a legal improvement plan to solve this problem, first, a plan according to a partial amendment to the Higher Education Act, second, a plan to be supervised by the Ministry of Health and Welfare through the amendment of article 37 of the Medical Service Act, third, article 20-2 of the Enforcement Decree of the Medical Service Technologists Act was newly inserted to propose three measures to be supervised by the Ministry of Health and Welfare.

• Korean Security Journal
• /
• no.36
• /
• pp.349-386
• /
• 2013

This research analyzes and evaluates The Korean Security Industry Law(TKSIL) putting the regulation of the present government about the private security industry. It nowadays becomes the important axis of the police services offered in the aspect of 'the national life safety' in connection with 'the materialization of society which is safe from the crime'. TKSIL is one of the national administration strategies which Park Gun-hye government aims on supervision policy. After seeking out the core values of the private security industrial policy which sets up in order to approach the national life safety which Park Gun-hye government aims, we make some assessments of this revised security industry law systematically. Particularly all keynote of policy about the private security of the police tried to be confirmed and the desirable direction of policy tries to be presented as to the security industry law application and real operation. In the site of organized civil complaint, the revised security industry law was revised as the direction which intensifies the administrative regulation as to the partial regulation such as it established the reason of the introduction of the arrangement license system. And grounds for disqualification of security instructor and guard, and rules of punishment is intensified order to intercept previously illegal and violent act of the security company etc. However it has the feature that it accomplishes 'the law principle(principle of statute)' the substantial portion through the effort of them changing a lot the content for the form of the law when being the clauses of the fundamental human rights limit, although it has been prescribed in "the security industry law enforcement ordinance" or "the security industry law enforced regulation". The security industry law revised this time brought from the change of the sharp policy through the revision of 17 clauses or new establishment. It can divide into 4 categorizes. (1) strictness of punishment in the site of organized civil complaint (2) Intensification of throwing out for the violation person in the private security business market time-limitedly (3) Intensification of the legal guide supervision power of police (4) upstream of the capital, name tag attachment under compulsion and the limit about other equipment use etc. Essentially "the security industry law" cannot help regulating the national interference of the private security and regulation with this content. However as to this interference and regulation, the limit has to be possible within reasonable range. As the history proved, excessive regulation by the country is not only due to bring the distortion of the security system of nation but also provoke national social cost. It can't be disregards ever that it premises the harmony which appropriate as well as reasonable in the socio-economic dimension for drawing the best combination that all things which get the compulsory education, it limits the person providing the private security service to the corporation, or it limits to the certificate of qualification holder are the ultimate for 'the safety of the national life'.