• The Journal of Asian Finance, Economics and Business
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• 제9권3호
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• pp.257-263
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• 2022

The objective of this study was to see how artificial intelligence applications affected organizational innovation in Jordanian commercial banks. Both independent and dependent variables were measured in three dimensions: expert systems, neural network systems, and fuzzy logic systems for artificial intelligence applications variable. Product innovation, process innovation, and management innovation for the organizational innovation variable. To achieve study objectives, a questionnaire was developed and distributed to a sample of one hundred fifty-three managers in Jordanian commercial banks, who were selected according to the simple random sampling method. Except for the neural network systems dimension, which comes in at an average level, the study indicated that there is a high level of organizational innovation and artificial intelligence applications. Furthermore, the findings revealed that artificial intelligence applications have a significant impact on organizational innovation in Jordanian commercial banks, with the most important artificial intelligence application being a fuzzy logic system. The study suggested keeping track of technological advancements in the field of artificial intelligence applications and incorporating them into banking operations by benchmarking with the best commercial bank practices and allocating a portion of the budget to technological applications and infrastructure development, as well as balancing between technology use and information security risks to ensure client privacy is protected.

• Nuclear Engineering and Technology
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• 제55권6호
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• pp.2047-2052
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• 2023

Risk-informed approach has been widely applied in the safety design, regulation, and operation of nuclear reactors. It has been commonly accepted that risk-informed design optimization should be used in the innovative reactor designs to make nuclear system highly safe and reliable. In spite of the risk-informed approach has been used in some advanced nuclear reactors designs, such as Westinghouse IRIS, Gen-IV sodium fast reactors and lead-based fast reactors, the process of risk-informed design of nuclear reactors is hardly to carry out when passive system reliability should be integrated in the framework. A practical method for new passive safety reactors based on probabilistic safety assessment (PSA) and passive system reliability analyze linking is proposed in this paper. New three-dimension frequency-consequence curve based on risk concept with three variables is used in this method. The proposed method has been applied to the determination optimization of design options selection in a 10 MWth lead-based research reactor(LR) to obtain one optimized system design in conceptual design stage, using the integrated reliability and probabilistic safety assessment program RiskA, and the computation resources and time consumption in this process was demonstrated reasonable and acceptable.

• Geomechanics and Engineering
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• 제35권5호
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• pp.475-486
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• 2023

Ballast particles have an irregular shape and are discrete in nature. Due to the discrete nature of ballast, it exhibits complex mechanical behaviour under loading conditions. The discrete element method (DEM) can model the behaviour of discrete particles under a multitude of loading conditions. DEM is used in this paper to simulate a series of three-dimensional direct shear tests in order to investigate the shear behaviour of railway ballast and its interaction at the microscopic level. Particle flow code in three dimension (PFC3D) models the irregular shape of ballast particles as clump particles. To investigate the influence of particle size distribution (PSD), real PSD of Indian railway ballast specification IRS:GE:1:2004, China high-speed rail (HSR) and French rail specifications are generated. PFC3D built-in linear contact model is used to simulate the interaction of ballast particles under various normal stresses, shearing rate and shear box sizes. The results indicate how shear resistance and volumetric changes in ballast assembly are affected by normal stress, shearing rate, PSD and shear box size. In addition to macroscopic behaviour, DEM represents the microscopic behaviour of ballast particles in the form of particle displacement at different stages of the shearing process.

• Korean Journal of Radiology
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• 제1권4호
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• pp.185-190
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• 2000

Objective: To document the imaging findings of hepatic cavernous hemangioma detected in cirrhotic liver. Materials and Methods: The imaging findings of 14 hepatic cavernous hemangiomas in ten patients with liver cirrhosis were retrospectively analyzed. A diagnosis of hepatic cavernous hemangioma was based on the findings of two or more of the following imaging studies: MR, including contrast-enhanced dynamic imaging (n = 10), dynamic CT (n = 4), hepatic arteriography (n = 9), and US (n = 10). Results: The mean size of the 14 hepatic hemangiomas was 0.9 (range, 0.5-1.5) cm in the longest dimension. In 11 of these (79%), contrast-enhanced dynamic CT and MR imaging showed rapid contrast enhancement of the entire lesion during the early phase, and hepatic arteriography revealed globular enhancement and rapid filling-in. On contrast-enhanced MR images, three lesions (21%) showed partial enhancement until the 5-min delayed phases. US indicated that while three slowly enhancing lesions were homogeneously hyperechoic, 9 (82%) of 11 showing rapid enhancement were not delineated. Conclusion: The majority of hepatic cavernous hemangiomas detected in cirrhotic liver are small in size, and in many, hepatic arteriography and/or contrast-enhanced dynamic CT and MR imaging demonstrates rapid enhancement. US, however, fails to distinguish a lesion of this kind from its cirrhotic background.

• Nuclear Engineering and Technology
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• 제56권6호
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• pp.2113-2119
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• 2024

This study presents the development and characterization of a prototype TL/OSL reader for the retrospective dose assessment of individuals in radiological emergencies. The reader is portable, semi-automatic, and capable of accurate measurements. The dimension of the reader is 25 × 25 × 37 cm³ and the weight is about 15 kg. The reader consists of a sample moving stage, a heating module, an optical stimulation module, a detection module, a data acquisition (DAQ) unit, a nitrogen gas control module, and a PC with a GUI program. The reader has three measurement modes: TL, CW_OSL, and custom mode. The reader was characterized using commercial thermal luminescence dosimeters (TLD, LiF:Mg,Cu,Si) and optically stimulated dosimeters (OSLD, Al₂O₃:C), as well as fortuitous materials, such as display glasses and resistors of mobile phone. The results showed that the reader is capable of measuring signals with a detection limit of up to 0.02 mGy using a commercial dosimeter. In the dose recovery test using fortuitous materials, the reconstructed doses obtained three days post-irradiation closely aligned with the initially administered doses. As a result, this study suggests that the developed TL/OSL reader is a promising instrument for emergency dose assessment at accident sites.

• 한국지역지리학회지
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• 제11권5호
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• pp.474-487
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• 2005

본 연구 목적은 2001년에 시행된 미국 NAEP 지리 평가에 대한 학생들의 문항반응경향성을 분석하여 귀납적으로 성취수준을 기술하는데 있다. NAEP 지리 평가는 4 8 12학년 학생을 대상으로 실시되는데, 평가영역은 내용영역과 행동영역으로 구분된다. 내용영역은 공간과 장소 환경과 사회 공간직 역동성과 연계성이고, 행동영역은 지식 이해 적용이다. 성취수준은 기초 숙달 수월수준으로 구분된다. 본 연구에서는 각 수준과 대표 문항을 연계하는 방법(item mapping method)을 사용하여 성취수준에 대하여 분석하였다. 그 결과 NAEP 지리 성취수준 설정위원회에서 제시한 성취수준과 대표 문항 분석에 기초한 성취수준은 큰 차이가 있는 것으로 나타났다. 대표 문항 분석을 기초로 도출된 성취수준은 실제 학생들의 문항반응에 기초하여 도출되었기 때문에 지리교육과정 개선을 위한 효과적인 송환 역할을 할 수 있을 것이다.

• Journal of Periodontal and Implant Science
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• 제45권6호
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• pp.216-222
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• 2015

Purpose: After extraction, the alveolar bone tends to undergo atrophy in three-dimensions. The amount of alveolar bone loss in the horizontal dimension has been reported to be greater than the amount of bone loss in the vertical dimension, and is most pronounced in the buccal aspect. The aim of this study was to monitor the predictive alveolar bone level following the extraction of anterior teeth seriously involved with advanced chronic periodontitis. Methods: This study included 25 patients with advanced chronic periodontitis, whose maxillary anterior teeth had been extracted due to extensive attachment loss more than one year before the study. Periapical radiographs were analyzed to assess the vertical level of alveolar bone surrounding the edentulous area. An imaginary line connecting the mesial and the distal ends of the alveolar crest facing the adjacent tooth was arbitrarily created. Several representative coordinates were established in the horizontal direction, and the vertical distance from the imaginary line to the alveolar crest was measured at each coordinate for each patient using image analysis software. Regression functions predicting the vertical level of the alveolar bone in the maxillary anterior edentulous area were identified for each patient. Results: The regression functions demonstrated a tendency to converge to parabolic shapes. The predicted maximum distance between the imaginary line and the alveolar bone calculated using the regression function was $1.43{\pm}0.65mm$. No significant differences were found between the expected and actual maximum distances. Likewise, the predicted and actual maximum horizontal distances did not show any significant differences. The distance from the alveolar bone crest to the imaginary lines was not influenced by the mesio-distal spans of the edentulous area. Conclusions: After extraction, the vertical level of the alveolar ridge increased to become closer to the reference line connecting the mesial and distal alveolar crests.

• 복식
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• 제62권2호
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• pp.26-39
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• 2012

This study intends to reconsider pleat, which was undermined as something too simple to express the details for women's costume, by focusing on the aesthetic value of plea in men's costumes in the west before the 20th century. Furthermore, based on the aesthetic value of the pleat, diverse studies on contemporary men's costumes shall help to attempt to set up a basis for the new mode of men's costume. The pleat, a component in the costume since the ancient times, had unique characteristics including functionality, a sense of volume, directing effect that is caused by line repetitions and formativeness that results through elasticity. First, the aesthetics of the pleat before the 20th century shows rhythmic sense through the repetition of the pleat line as shown in the drape type costume, and it also shows a sense of volume as the pleat is moved along the motion of the body. Second, it shows functionality as the expansion of space moves in accordance with the motion of body sets up an internal space of the costume that facilitates body motion. Third, the pleat extends two dimension space into three dimension space using its elasticity. It exaggerates specific parts of the costume while ignoring body shape in order to symbolize status and authority of men. Fourth, it unifies the costume by wrapping the body by using quadrangle cloths with drapers, and expanding the silhouette with the pleat artificially to conceal the physical character and personality of the wearer. The physical character of the wearer disappears into the space made by the pleat. The pleat reveals the voluptuous beauty within.

• 디자인학연구
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• 제19권5호
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• pp.293-302
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• 2006

20세기 후반부터의 정보전자기술 발달은 인간에게 3차원에서 다차원으로 공간인식의 확장을 가져다 주었고, 공간 또한 인간의 경험, 인지, 체험의 이미지반응능력이 가능해지면서 인간과의 상호유기적 관계를 형성하게 되었다. 이러한 상호유기적 관계는 현존하고 있는 물리적 공간 중에서 정보 전자기술을 적극적으로 도입하고 있는 전시공간에서 잘 보여지고 있다. 이에 본 연구에서는 정보전자기술이 도입된 체험형 전시공간에서 정보와 이용자의 인터랙션 매개체로서의 전시시설을 중심으로 전시시설과 인터랙션 형태의 현황을 비교 조사하였다. 이는 인간과 공간의 상호유기적 관계속에서 일어날 수 있는 여러 현상들을 예측하여 인간과 공간의 다양한 커뮤니케이션 활동의 역할을 위한 장으로서의 공간에 반영하고자 하는 궁극적인 목적을 위한 것으로 향후 전시에 대한 조사연구가 전시공간측만 아니라 변화되고 있는 이용자의 행태연구를 통해 전시공간과 이용자행태와의 상호관련성을 밝히는 연구를 지속적으로 수행 할 것이다.

• 한국인구학
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• 제31권2호
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• pp.45-76
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• 2008

본 연구에서는 한국, 일본, 미국, 독일, 스웨덴 등 5개국 청소년 자녀에 대한 부모의 지지와 통제가 부모 및 자녀의 성별에 따라 어떻게 다를 수 있는지를 분석하였다. 본 연구는 아버지보다 어머니가 청소년 자녀에게 더 지지적이고 덜 통제적이며, 아들보다 딸에게 더 지지적이고 덜 통제적이어서, 모녀관계에서 지지적 특성이 가장 강하고 부자관계에서 통제적인 특성이 가장 강하게 나타날 것이라는 가설로부터 시작한다. 이 연구를 위해서 한국청소년개발원이 2006년에 실시한 5개국 설문조사자료를 사용한 분석이 이루어졌다. 분석 결과, 한국사례에 대해서는 모든 가설이 지지되었으며, 다른 국가의 경우는 부분적으로 지지되었다. 5개국 모두에서 어머니는 아버지보다 더 지지적인 것으로 확인되었다. 대부분의 국가에서 부모가 아들보다 딸에 대해서 더 지지적인 것으로 나타나기는 하였으나, 자녀 성별의 효과는 부모 성별의 효과만큼 뚜렷하지는 않았다. 통제적 행동의 경우는 한국과 미국에서만 성별 효과가 나타났다.