• Journal of Information Processing Systems
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• 제15권4호
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• pp.865-889
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• 2019

The need for cyber resilience is increasingly important in our technology-dependent society where computing devices and data have been, and will continue to be, the target of cyber-attackers, particularly advanced persistent threat (APT) and nation-state/sponsored actors. APT and nation-state/sponsored actors tend to be more sophisticated, having access to significantly more resources and time to facilitate their attacks, which in most cases are not financially driven (unlike typical cyber-criminals). For example, such threat actors often utilize a broad range of attack vectors, cyber and/or physical, and constantly evolve their attack tactics. Thus, having up-to-date and detailed information of APT's tactics, techniques, and procedures (TTPs) facilitates the design of effective defense strategies as the focus of this paper. Specifically, we posit the importance of taxonomies in categorizing cyber-attacks. Note, however, that existing information about APT attack campaigns is fragmented across practitioner, government (including intelligence/classified), and academic publications, and existing taxonomies generally have a narrow scope (e.g., to a limited number of APT campaigns). Therefore, in this paper, we leverage the Cyber Kill Chain (CKC) model to "decompose" any complex attack and identify the relevant characteristics of such attacks. We then comprehensively analyze more than 40 APT campaigns disclosed before 2018 to build our taxonomy. Such taxonomy can facilitate incident response and cyber threat hunting by aiding in understanding of the potential attacks to organizations as well as which attacks may surface. In addition, the taxonomy can allow national security and intelligence agencies and businesses to share their analysis of ongoing, sensitive APT campaigns without the need to disclose detailed information about the campaigns. It can also notify future security policies and mitigation strategy formulation.

• 한국융합학회논문지
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• 제11권12호
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• pp.233-242
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• 2020

우리는 확정기여금 제도를 통한 근로자의 우리사주 소유가 경영진의 경영권 통제로부터 비롯되었다고 보고, 2006년 미국 연금보호법 제정이 근로자의 우리사주 소유와 기업성과의 관계에 미치는 영향을 살펴본다. 이를 위해서 1999년부터 2014년까지의 Form 5500 데이터를 이용해서 선형 회귀분석(Ordinary Least Square Regression)을 실시했다. 그 결과 우리는 근로자의 우리사유 소유가 높은 회사는 법이 채택된 이후 토빈의 Q로 측정한 기업 가치가 증가한 것을 발견했다. 이러한 결과는 2006년 연급보호법은 인해서 근로자의 우리사주 소유를 감소시키고 수탁자의 충실의무를 강화함으로써 경영권 통제 동기의 부정적인 영향을 완화하는데 효과적이라는 것을 시사한다. 본 연구의 결과를 기반으로 향후 2006년 연금보호법 제정이 근로자의 우리사주 소유와 주식성과 혹은 시장반응에 대한 연구를 진행할 수 있을 것이다.

• 한국지형학회지
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• 제25권1호
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• pp.31-45
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• 2018

This study investigated the characteristics of sedimentary environment changes across a tidal flat in Gagyeongju of Anmyeondo Island. We performed a spatio-temporal analysis on the grain sizes composition of sediments and micro-landform changes during the winter from 2013 to 2016. The results showed that erosion was a dominant processthroughout the study flat, reducing the surface elevation even by 1 m around the upper sand flat. As a consequence, headlands have formed in the entire region of Gagyeongju village. In addition, erosion quickly progressed along the low-lying subtidal zone and tide way and, in contrast, sedimentation progressed in the mid-elevation tidal flat. We posit that a jetty, which had been constructed as a pier facility on the eastern part of the study area, interfered with the flow of tidal current, thereby enhancing these erosional processes. This is because such interference can block the supply of fine-textured sediments from the nearby Cheonsu Bay and therefore reduce surface elevation. According to the surface sediment analysis, the sediments were categorized into 7 sedimentary facies, and generally displayed a high ratio of silt and clay. The result of time-series analysis (2012-2013) showed that the sediments on the tidal flat became fine-grained, and that sorting became worse. However, the sediments on the subtidal zone, embayment and along inside of the jetty tended to be coarse-grained. In conclusion, the tidal flat microlandform change in the study area was caused by a disruption in the seawater circulation due to the jittery construction within the tidal flat, which had a direct effect on erosional and sedimentary environment processes.

• 한국지형학회지
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• 제24권1호
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• pp.77-91
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• 2017

Many debris landforms in the mountains of Korea have formed in the periglacial environment during the last glacial stage when the generation of sediments was active. Because these landforms are generally located on steep slopes and mostly covered by vegetation, however, it is difficult to observe and access them through field investigation. A scientific method is required to reduce the survey range before performing field investigation and to save time and cost. For this purpose, the use of remote sensing and GIS technologies is essential. This study has extracted the potential area of debris landform formation using a fuzzy set model as a mathematical data integration method. The first step was to obtain information about the location of debris landforms and their related factors. This information was verified through field observation and then used to build a database. In the second step, we conducted the fuzzy set modeling to generate a map, which classified the study area based on the possibility of debris formation. We then applied a cross-validation technique in order to evaluate the map. For a quantitative analysis, the calculated potential rate of debris formation was evaluated by plotting SRC(Success Rate Curve) and calculating AUC(Area Under the Curve). The prediction accuracy of the model was found to be 83.1%. We posit that the model is accurate and reliable enough to contribute to efficient field investigation and debris landform management.

• 영미문화
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• 제14권1호
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• pp.73-94
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• 2014

Accounts from therapeutic culture seem often to associate the selfish, or at least self-centered quest for self-fulfillment with individual choice or satisfaction, self-expression, expressive individualism, and emotionalism. These associations point to the downside of therapy as they present it as constituting a culture of narcissism, selfishness, or irresponsibility. While some of these characterizations contain useful insights, they overlook what are maybe some of the most important features of a therapeutic outlook. This paper aims to reveal that the therapeutic imperative is not so much geared towards the realization of self-fulfillment, as it is the promotion of self-limitation. Therapeutic culture tends to posit the self in a fragile and feeble form and insist that the management of life requires the continuous intervention of therapeutic expertise. Because of this, the elevated concern with the self is underpinned by anxiety, pain, suffering, and survival, rather than seen as a positive vision of realizing the human potential. Therapeutic culture has in this way helped to construct a diminished sense of self by which one is seen as suffering from an emotional deficit and vulnerability. This paper demonstrates this downside of therapeutic culture concerning self-limitation and the sense of a diminished self by examining popular "misery memoirs." Misery memoirs are widely consumed by the general public, therefore tend to be treated by contemporary therapeutic culture as a gospel on the therapeutic ideal for self-fulfillment and self-discovery. This is, despite the existence of hidden evidence to the contrary, because of their redemptive, happy endings that show individuals overcoming difficult trials such as child abuse, incestuous rape, and domestic violence. Individual self-fulfillment and self-discovery in such stories are not achieved through the active agency of the subject but through the passive endurance of pathological symptoms and with the aid of expertise and outside support. Therefore, such stories put victims in the limited position.

• 대순사상논총
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• 제35집
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• pp.509-539
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• 2020

大巡真理會以《典經》為主體, 闡述神與人的思維於教義之中, 含括神聖性, 宗教性與教義性等探討價值 ; 神與人的傳統意義, 經由《典經》的詮釋, 超越倫理性, 傳統性和社會性, 跨越世俗性的終極關懷。從《典經》的角度分析, 有助於了解大巡真理會的宗旨, 組織的推行方針與未來走向。召會以《聖經》為主體, 將神與人的關連, 作為經歷神聖生命與性情的植入, 而與人的生命與性情調和 ; 神聖的生命是一直不斷地與人的生命調和, 並使之成為神聖的人, 或可稱為屬人的神聖者。此即「神人」的原因, 使人的生命成為神人的生命, 生活是神性調著人性, 作為外顯的行事為人, 性格與生活 ; 因此, 「神人調和」的說法, 作為神與人的關係詮釋, 專注於神與人之間的神聖關連, 從而延伸至召會的範圍。大巡真理會與召會, 代表著歷史, 文化, 語言, 宗教等不同的分野, 卻在神與人的超然解釋上, 各自提出「神人調化」, 「神人調和」等見解 ; 二者可尋覓出論點上的類似點和相異觀, 作為探究的區分與貢獻。

• 한국물환경학회지
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• 제39권6호
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• pp.465-474
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• 2023

The chemical composition and molecular weight characteristics of dissolved organic matter (DOM) exert a profound influence on the efficiency of organic matter removal in water treatment systems, acting as efficiency predictive indicators. This research evaluated the primary chemical and molecular weight properties of DOM derived from diverse sources, including rivers, lakes, and biomasses, and assessed their relationship with the efficiency of coagulation/flocculation treatments. Dissolved organic carbon (DOC) removal efficiency through coagulation/flocculation exhibited significant correlations with DOM's hydrophobic distribution, the ratio of humic-like to protein-like fluorescence, and the molecular weight associated with humic substances (HS). These findings suggest that the DOC removal rate in coagulation/flocculation processes is enhanced by a higher presence of HS in DOM, an increased influence of externally sourced DOM, and more presence of high molecular weight compounds. The results of this study further posit that the efficacy of water treatment processes can be more accurately predicted when considering multiple DOM characteristics rather than relying on a singular trait. Based on major results from this study, a predictive model for DOC removal efficiency by coagulation/flocculation was formulated as: 24.3 - 7.83 × (fluorescence index) + 0.089 × (hydrophilic distribution) + 0.102 × (HS molecular weight). This proposed model, coupled with supplementary monitoring of influent organic matter, has the potential to enhance the design and predictive accuracy for coagulation/flocculation treatments targeting DOC removal in future applications.

• Asia pacific journal of information systems
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• 제22권3호
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• pp.1-27
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• 2012

Many companies have recently become interested in using social networking sites such as Twitter and Facebook as a new channel to communicate with their customers. For example, companies often offer "special deals" (e.g., coupons, discounts, free samples, etc.) to their customers who participate in promotions or events on social networking sites. Companies often make important announcements on their products or services on social networking sites. By doing so, customers are encouraged to continue to have relationships with companies on social networking sites and to recommend the companies' presence on social networking sites to other potential customers. Moreover, customers who keep close relationships with companies on social networking sites often provide the companies with valuable suggestions and feedback. For instance, Starbucks has more than 2 million followers on Twitter, and often receive suggestions and feedback for their product offerings and services from the followers on Twitter. Although companies realize potential benefits of using social networking sites as a channel to communicate with their customers, it appears that many companies have difficulty forging long-lasting relationships with customers on social networking sites. It is often reported that many customers who had followed companies on Twitter later stopped following them for various reasons. Therefore, it is an important issue to understand what motivates customers to continue to keep relationships with companies on social networking sites. Nonetheless, due attention has yet paid to this issue until recently. This study intends to contribute to our understanding on customers' intention to continue to follow companies on Twitter and to spread positive word-of-mouth about companies on Twitter. Specifically, we identify seven potential factors that customers perceive as important in evaluating their experience with companies on Twitter. The seven factors include similarity, receptivity, interactivity, ubiquitous connectivity, enjoyment, usefulness and transparency. We posit that the seven perception factors can affect the two types of satisfaction, emotional and cognitive, which can in turn influence on customers' intention to follow companies on Twitter and to spread positive word-of-mouth about companies on Twitter. Research hypotheses formulated in this study were tested with data collected from a questionnaire survey administered to customers who had been following companies on Twitter. The data was analyzed with the partial least square (PLS) approach to structural equation modeling. The results of data analysis based on 177 usable responses were generally supportive of our predictions for the effects of the seven factors identified and the two types of satisfaction. In particular, out results suggest that emotional satisfaction was strongly influenced by perceived similarity, perceived receptivity, perceived enjoyment, and perceived transparency. Cognitive satisfaction was significantly influenced by perceived similarity, perceived interactivity, perceived enjoyment, and perceived transparency. While cognitive satisfaction was found to have significant and positive effects on both continued following and word-of-mouth intentions, emotional satisfaction had a significant and positive effect only on word-of-mouth intention.

• 복식
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• 제50권7호
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• pp.15-31
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• 2000

1. After the Chu Dynasty(周代), we can confirm the fish shape mark made of stones as the relics of the Chunkuk dynasty(戰國時代). In the Shu Dynasty(隋代), the system of bamboo and the rabbit shape mark made of silver into the fish shape mark. As it were, made of bamboo or siltier changed into the fish shape mark made of jade, gold, silver or wood. 2. In the Dang Dynasty(唐代), the used the fish shape credit mark made of jade, gold, silver, copper or textile, according to their classes. According to one's posit the man who wore purple, red coat, credit mark made a gold and silver. attached with putting them in fish bags. 3. In the Ryo Dynasty(遼代), there was also a system of attaching marks. The emperor was hanging the fish shape and the officials attached the double fish shape to the common dress. fish shape of jade. gold, amber, agate, silver or copper. without any fish bag. 4. The Song Dynasty(宋代) followed the system of the Dang Dynasty they used only the fish shape bags without marks in them. Hanging the fish shape bags made of gold and silver at the back side of the belt. 5. The Gin Dynasty(金代) carried out the system of made jade, gold or silver like the Dang, Song and Ryo Dynasty. In the Sejong Kingdom a system of paper card was carried out as the credit mark of the eighth and the ninth grade. 6. In the Ming Dynasty(明代), the military official general attached the golden, silver, ivory of jade, wood and copper cards with their positions and names. 7. Following the Dang Dynasty, Japan made of fish shape bags to their clothes. Colors of their fish shape marks were same as their clothes. They made the marks, such as crystal, cow's horn, lead and nickel and plated them with gold or silver. 8. In Korea, Pohai(발해) established the fish shape credit mark differed in material. gold, silver or copper according to their positions. We can confirm the Unified Silla(南國;統一新羅), carried out the system of attaching the fish shape in Chonma Chong(천마총), Golden Crown Chong(金冠塚), the King's 13-17 belt ring unearthed at the north part of Court South threat Chong(황남대총), the fish shape golden or silver, to their purple or red ceremonial coats. In the Koryo Dynasty(高麗), like the Dang, Song and Pohai, they attached the fish shape golden or silver marks, to their purple or red ceremonial coats.

• 한국조리학회지
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• 제18권2호
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• pp.51-63
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• 2012

본 연구는 조리학과 재학생들의 학과 선택에 따른 블록식 수업프로그램에 대한 만족도와 미래직업의지에 영향적 요인들을 확인하기 위해 변인으로 선택, 성별과 학년으로 구분하여 검증하였다. 이와 함께 블록식 수업 프로그램의 만족도가 미래 직업 의지에 영향을 주는 것에 대해서도 검증을 실시하였다. 연구 결과 성별과 학년별에 따른 수업만족도 T-검증 결과로 볼 때 유의수준 0.05에서 유의성을 보였으며, 남학생들이 여학생들보다 수업만족도가 높은 것으로 나타났다. 성별에 따른 미래 직업 의지에서도 성별에 따라 유의한 차이가 나타났는데, 역시 남학생이 여학생보다 미래 직업의지가 더욱 강하게 나타났다. 그러나 학년별 블록식 수업만족도 검증에서는 학년간 유의한 차이를 보이지 않고 있다. 학년별 미래직업의지에서는 유의수준 0.01에서 유의한 차이를 보이고 있다. 결과적으로 1학년이 가장 강하게 나타났고 4학년이 비교적 약하게 나타났다. 다음으로 선택변인에 따라 블록식 수업프로그램 만족도를 검증한 결과 두 변인 간 상관관계가 존재하고, 유의성검증에서도 모두 p-value가 0.000으로 매우 유의하게 나타났다. 자신이 선택한 결과에 대해서 책임감과 만족도가 높게 나타나는 것은 이미 많은 선행연구에서도 검증이 된바 있으며 블록식 수업에서도 같은 결과를 얻게 된 것이다. 마지막으로 블록식 수업만족도와 미래직업의지와의 관계에서도 p-value 0.000수준으로 유의성이 매우 높게 나타났으며 회귀결정계수도 0.840으로 상당히 크게 나타났다. 따라서 본 연구 결과로 볼때 성별에 따라서 블록식 프로그램의 만족도와 미래직업의지는 차이가 나는 것은 여학생들이 남학생보다 블록식 교육시스템에서 육체적으로 더 힘들게 느끼는 것으로 사료된다. 반면 학년에 따라서 차이는 없지만 미래직업의지에는 차이가 나타났다. 학년에 따른 미래직업의지에서 1학년이 가장 높고 4학년이 가장 낮게 나타났다. 이러한 결과를 볼 때 성별에 따라 블록시스템에 만족도가 다르고 학년에 따라 미래직업의지가 다르기 때문에 조리 교사들은 이러한 결과를 고려해서 학생들의 미래직업 준비와 수업만족도에 대한 개선을 계획해야 할 것이다.