• The Journal of the Convergence on Culture Technology
• /
• v.10 no.4
• /
• pp.431-435
• /
• 2024

This study aims to analyze cases of drone psychological warfare in modern conflicts and examine their effects and limitations. Focusing on the cases of the United States, Israel, and Ukraine, the study investigates the impact of drone-based surveillance, attacks, and propaganda activities on the morale and combat will of enemy forces. The findings indicate that drone psychological warfare has a significant effect in pressuring the enemy psychologically and weakening their will to fight. However, it also entails serious side effects, such as civilian casualties and controversies over violations of international law, which calls for an ethical review. This study is significant in providing a foundation for in-depth discussions on the effectiveness and ethics of drone psychological warfare.

• Environmental Analysis Health and Toxicology
• /
• v.18 no.2
• /
• pp.69-76
• /
• 2003

Effects of ambient nitrite, NO$_2$$\^$-/, at 1, 3, 10 and 30 mg/1, on the changes of plasma nitrite/nitrate and on hepatic drug - metabolizing enzyme activity were examined in the juvenile Israeli carp, Cyprinus carpio. When the fish were exposed to 1 and 3 mg/1 NO$_2$$\^$-/, there was an exposure duration-dependent increase in plasma NO$_2$$\^$-/ over the 96-hr period reaching 6∼7 fold excess the ambient concentration. In the fish exposed to 10 mg/1, a plateau concentration of less than 2-fold of the environment was attained in 12 hr. With 30 mg/1, however, the maximal plasma NO$_2$$\^$-/ was 41.25 mg/1 at 12 hr followed by a gradual decline. There was a concentration-dependent increase in methemoglobin (metHb) level in all NO$_2$$\^$-/ -exposed groups and a significant decrease in hematocrit value in 30 mg/l group after 96-hr exposure. Apart from the blunted increase in plasma NO$_2$$\^$-/ with higher NO$_2$$\^$-/ (10 and 30 mg/1) exposure, the ratio of plasma NO$_3$$\^$-/ to NO$_2$$\^$-/ was signifirantly higher in these groups compared to 1 and 3 mg/1. The imbalance in the plasma NO$_3$$\^$-//NO$_2$$\^$-/ at higher NO$_2$$\^$-/ exposure suggests a possible accelerated conversion of NO$_2$$\^$-/ to NO$_3$$\^$-/. Nitrite exposure did not affect the hepatic drug-metabolic activities in juvenile Israeli carp. All these data indicate that disposition of NO$_2$- differ depending upon exposed concentration and that metHb production may not be the exclusive toxic mechanism in carp.

• The Korean Journal of Applied Statistics
• /
• v.31 no.1
• /
• pp.109-122
• /
• 2018

The composite lognormal-generalized Pareto distribution (LN-GPD) is a mixture of right-truncated lognormal and GPD for a given threshold value. Scollnik (Scandinavian Actuarial Journal, 2007, 20-33, 2007) shows that the composite LN-GPD is adequate to describe body distribution and heavy-tailedness. This paper considers time-varying modeling of the LN-GPD based on local polynomial maximum likelihood estimation. Time-varying model provides significant detailed information of time dependent data, hence it can be applied to disciplines such as service engineering for staffing and resources management. Our work also extends to Beirlant and Goegebeur (Journal of Multivariate Analysis, 89, 97-118, 2004) in the sense of losing no data by including truncated lognormal distribution. Our proposed method is shown to perform adequately in simulation. Real data application to the service time of the Israel bank call center shows interesting findings on the staffing policy.

• The Journal of the Korea Contents Association
• /
• v.16 no.10
• /
• pp.701-710
• /
• 2016

Perspective of director Bong Joon-ho shown in his movies up to now had been limited to domestic issues but that in the was shifted to the world, mankind, and future of humans. Images exhibited in his movies had the same meanings of many stories in the Bible and myths. The study looks into his philosophical world through the Christian view of the world and the Oriental circulation thinking; the story of the was expressed in before the glacial period, the 17 year glacial period spent in a train, and after the glacial period; structure of the story was composed of allegory as prior to Israelites' Escape from Egypt, desert life for 40 years, and entrance to Canaan. The end in the Bible does not mean complete collapse but it contains aspiration for new heaven and new earth to open a new era, to make a new promise with the God and to live a permanent life. This study intends to interpret the developed in a quite different meaning of imagination of humans' future from the previous one by the director Bong Joon-ho and to make another different explanation underlying in the image projected on the surface layer by the director.

• Journal of Agricultural Extension & Community Development
• /
• v.6 no.2
• /
• pp.119-139
• /
• 1999

While many factors could be mentioned to the rapid development of Israel for the last 50 years, it could not be overemphasized the critical role of large scale influx of Jewish immigrants not only in the process of achieving national independence but to the development of modernization. It is well known that mass influx of people in a relatively short period of time may cause serious social problems in various areas such as housing shortage, increasing crime rate, etc. Nontheless, Israel is avidly recognized as a country that successfully overcome such problems by means of creating systematic social integration systems and practicing various adaptation assistance programs for new immigrants. This study was concerned with such a successful social adaptation-assistance programs of Israel for large scale immigrants those who came from all over the world with different socio-economic background. In order to answer the research questions, following two areas of topics were researcher`s main concern. First, organizational structure and functions of the Ministry of Immigrant Absorption of Israel and Jewish Agency that are primarily responsible for the economic, occupational, social, and cultural integration of immigrants during their first three years (five years for housing-aid) in Israel. Second practical adaptation assistance programs such as direct absorption basket, Ulpan, Aliyah 2000, special projects of Keren Hayesod and two of Aliyah Absorption Centers are examined. And lastly some of implications and suggestions are provided in the conclusion section in relation with social adaptation-assistance and integration of reunified Korea, especially from the point of North Koreans.

• The Journal of Korean Association of Computer Education
• /
• v.8 no.3
• /
• pp.61-76
• /
• 2005

The seventh secondary computer education curriculum is focused on computer literacy education. This computer curriculum is an elective course not a required course and is a part of other specific course. This computer education has problems that it is not consecutive, overlapped with other classes and not systematic. This research analyzes the computer education in Israel, India, and Japan. And it suggests the new secondary school computing education curriculum based on computer educating of Computer Curricula 2001 Computer Science, lEEE Computer Society and ACM has suggested 2001 for computer science education in university, and with a standard of 'A Model Curriculum for K-12 Computer Science', the suggestion for computer-science education for all grade of school.

• Transactions of the Korean hydrogen and new energy society
• /
• v.31 no.5
• /
• pp.436-443
• /
• 2020

The performance prediction model of a solid oxide fuel cell stack has been developed using deep neural network technique, one of the machine learning methods. The machine learning has been received much interest in various fields, including energy system mo- deling. Using machine learning technique can save time and cost requried in developing an energy system model being compared to the conventional method, that is a combination of a mathematical modeling and an experimental validation. Results reveal that the mean average percent error, root mean square error, and coefficient of determination (R2) range 1.7515, 0.1342, 0.8597, repectively, in maximum. To improve the predictability of the model, the pre-processing is effective and interpolative machine learning and application is more accurate than the extrapolative cases.

• Journal of Aquaculture
• /
• v.3 no.1
• /
• pp.13-23
• /
• 1990

An experiment was conducted to determine for the optimal phosphorus supplemention to carp feed which contains $50\%$ soybean meal, with $32\%$ protein content to obtain maximum growth of the Israeli strain of common carp (Cyprinus carpio). The experimental fish were between 100 g and 1000 g in body weight. The results, obtained were as follows: the optimum amount of phosphorus added to the experimental feed was $1.6\%$ as $NaH_2PO_4{\cdot}2H_2O$ which brings up the total amount of available phosophorus to $0.504\%$ of the feed. This amount is slightly less than the amount, $0.6-0.7\%$ which was previously reported for the Japanese native strain of carp which weighted around 4.5g. Thus there seems to be some difference for the requirement of phosphorus between the sizes of carp.

• The Korean Journal of Applied Statistics
• /
• v.29 no.5
• /
• pp.807-822
• /
• 2016

The composite lognormal-GPD models (LN-GPD) enjoys both merits from log-normality for the body of distribution and GPD for the thick tailedness of the observation. However, in the estimation perspective, LN-GPD model performs poorly due to numerical instability. Therefore, a two-stage procedure, that estimates threshold first then estimates other parameters later, is a natural method to consider. This paper considers five nonparametric threshold estimation methods widely used in extreme value theory and compares their performance in LN-GPD parameter estimation. A simulation study reveals that simultaneous maximum likelihood estimation performs good in threshold estimation, but very poor in tail index estimation. However, the nonparametric method performs good in tail index estimation, but introduced bias in threshold estimation. Our method is illustrated to the service time of an Israel bank call center and shows that the LN-GPD model fits better than LN or GPD model alone.

• Journal of Energy Engineering
• /
• v.15 no.2 s.46
• /
• pp.107-117
• /
• 2006

The status of water splitting thermochemical cycle for hydrogen production was reviewed in this article. Mass production of hydrogen could be possible using the thermochemical process which is similar to the concept of conventional chemical reaction system if the high temperature heat source is available. The mediators (chemicals and reagents) should be used to split chemically stable water, and should be recycled in a closed cycle in order to be environmentally acceptable. Though there is no process to reach commercial stage, IS cycle, two-step cycles based on metallic oxide such as ZnO/Zn, $Fe_3O_4/FeO$ and the associated cycles are attracted due to their possibilities of application. Development of materials for high temperature and/or corrosive conditions during thermochemical process is still important topic in some thermochemical processes.