• 제목/요약/키워드: Christian University

검색결과 1,238건 처리시간 0.024초

Evaluation of side resistance for drilled shafts in rock sections

  • Hsiao, Cheng-Chieh;Topacio, Anjerick J.;Chen, Yit-Jin
    • Geomechanics and Engineering
    • /
    • 제21권6호
    • /
    • pp.503-511
    • /
    • 2020
  • This study evaluated the side resistance of drilled shafts socketed into rock sections. Commonly used analysis methods for side resistance of piles in rocks are examined by utilizing a large number of load test data. The analysis of the unit side resistance of pile foundations embedded into rock sections is based on an empirical coefficient (α) and the uniaxial compressive strength (qu) or its root (${\sqrt{q_u}}$). The Davisson criterion was used to interpret the resistance capacity from the load test results to acquire the computed relationships. The α-${\sqrt{q_u}}$ relationship is proven to be reliable in the prediction of friction resistance. This study further analyzed the relationship by including the effect of rock quality designation (RQD) on the results. Analysis results showed that the analysis model of α-${\sqrt{q_u}}$-RQD provided better prediction and reliability considering the RQD classification. Based on these analyses, the side resistance of drilled shafts socked into rocks is provided with statistical data to support the analysis.

Comparison of Image Duplication Detection Using the Polar Coordinates System and Histogram of Oriented Gradients Methods

  • Gunadi, Kartika;Adipranata, Rudy;Suryajaya, Ivan
    • Journal of information and communication convergence engineering
    • /
    • 제17권1호
    • /
    • pp.67-73
    • /
    • 2019
  • In the current era of digital technology, and with the help of existing software, digital photo manipulation is becoming easier and faster. One example of this is the development of powerful image processing software that makes it easy for a digital image to be manipulated and edited. It is therefore very important to protect and maintain public trust in digital images. Several methods have been developed to detect image manipulation. In this paper, we compare two methods for detecting image duplication due to copy-move actions, namely the polar coordinate system and the histogram of oriented gradients methods. The former is a method based on the transfer of a Cartesian image to a polar form, making it easy to tell whether there are objects that have undergone a copy/move in an image, while the latter is a method for retrieving information related to the distribution, which uses a target in the local area as a tool to represent the shape of the target. We compare the accuracy, speed and memory usage of these two methods.

Microbiome of Halophytes: Diversity and Importance for Plant Health and Productivity

  • Mukhtar, Salma;Malik, Kauser Abdulla;Mehnaz, Samina
    • 한국미생물·생명공학회지
    • /
    • 제47권1호
    • /
    • pp.1-10
    • /
    • 2019
  • Saline soils comprise more than half a billion hectares worldwide. Thus, they warrant attention for their efficient, economical, and environmentally acceptable management. Halophytes are being progressively utilized for human benefits. The halophyte microbiome contributes significantly to plant performance and can provide information regarding complex ecological processes involved in the osmoregulation of halophytes. Microbial communities associated with the rhizosphere, phyllosphere, and endosphere of halophytes play an important role in plant health and productivity. Members of the plant microbiome belonging to domains Archaea, Bacteria, and kingdom Fungi are involved in the osmoregulation of halophytes. Halophilic microorganisms principally use compatible solutes, such as glycine, betaine, proline, trehalose, ectoine, and glutamic acid, to survive under salinity stress conditions. Plant growth-promoting rhizobacteria (PGPR) enhance plant growth and help to elucidate tolerance to salinity. Detailed studies of the metabolic pathways of plants have shown that plant growth-promoting rhizobacteria contribute to plant tolerance by affecting the signaling network of plants. Phytohormones (indole-3-acetic acid and cytokinin), 1-aminocyclopropane-1-carboxylic acid deaminase biosynthesis, exopolysaccharides, halocins, and volatile organic compounds function as signaling molecules for plants to elicit salinity stress. This review focuses on the functions of plant microbiome and on understanding how the microorganisms affect halophyte health and growth.

Does reduction of the oncologic safety margin for facial basal cell carcinoma result in higher recurrence rates?

  • Kim, Eon Su;Yang, Chae Eun;Chung, Yoon Kyu
    • 대한두개안면성형외과학회지
    • /
    • 제22권3호
    • /
    • pp.135-140
    • /
    • 2021
  • Background: Wide surgical excision is the gold standard for basal cell carcinoma (BCC) treatment. Typically, resection requires a safety margin ≥ 4 mm. We aimed to confirm BCC excisions' cancer recurrence rate and safety on the facial region with new safety margins. Methods: We included patients with primary BCC on the facial region who underwent wide excision with 2- or 3-mm safety margins at our institution between January 2010 and December 2018. Medical records were reviewed to confirm the epidemiology and surgical information. Recurrence was confirmed by physical examination through regular 6-month follow-up. Results: We included 184 out of 233 patients in this study after applying the exclusion criteria. The mean age and follow-up period were 71.2±10.2 years and 29.3±13.5 months, respectively. The predominantly affected area was the nose (95 cases); a V-Y advancement flap was the most commonly used surgical method. There were two cases of recurrence in the 2 mm margin group and one recurrence in the group resected with 3 mm margins. Conclusion: In this large cohort study, we found 2-3 mm excision margins can yield enough safety in facial BCCs. The recurrence rates were found to be comparable with those reported after wider margins.

기독교 대학에서의 학습 상황 진단 도구 개발을 위한 모형 설계 및 제안 (Model Design and Proposal for the Development of a Learning Status Diagnostic Tool at a Christian University)

  • 이성아;권경만
    • 기독교교육논총
    • /
    • 제61권
    • /
    • pp.203-232
    • /
    • 2020
  • 본 연구는 대학생의 학업생활에 영향을 미치는 다양한 분야들을 선행 연구를 통해 파악하고, 그 영역별 요인들을 진단할 수 있도록 하위요인을 도출하였다. 그 후, 설계 원리를 수립하고, 학습 상황 진단 도구 개발을 위한 모형을 설계하는 연구이다. 우선 연구를 위해 대학생들의 역량, 대학생활 및 학업 저성취자 연구, 학사경고자 연구 등을 토대로 어떤 요인들이 학업에 영향을 주고 있는지를 파악하였고, 특히 학업을 실패하도록 만드는 요인이 무엇인지를 살펴 보았으며, 그것들을 토대로 진단할 수 있게 하위요인들을 설정하였다. 선행 연구를 통해 설정된 영역은 심리적 차원, 학습적 차원, 진로적 차원으로 나누어 졌고, 기독교 대학 학생들을 위해 모형을 제시하고자 하였기에, 신앙 영역도 요인으로 설정하여 완성하였다. 그 후에는 각 영역별 하위요인을 구성하였는데, 초안 모형에서는 신앙영역 하위에 신앙성숙도와 신앙훈련, 심리영역 하위에 긍정적 사고, 정서 조절, 자아 존중감, 학습역역 하위에 자기 주도적 학습능력, 학습동기, 학습전략, 마지막으로 진로영역 하위에 진로성찰, 진로탐색, 진로관리, 진로탐색장애의 요소로 구성하였다. 이후 기독교인이면서 교육학 박사로 대학 및 교육 관련 기관에 재직 중인 10명의 전문가 집단을 통해 델파이 연구를 수행하였다. 델파이를 위해 본 연구의 취지를 설명하고, 모형의 적합성, 모형을 이루는 영역, 그 하위의 요인 등에 대해 타당성을 검증하였는데, 그 결과, 초기 4개 영역 12개 하위영역이었던 모형은 하위 요인 기준으로 신앙훈련, 정서조절, 진로성찰의 하위요인이 타당하지 않다는 결론에 이르러 삭제하게 되었고, 최종적으로 4개 영역의 9개 요인, 즉 신앙-신앙성숙도, 심리-긍정적 사고, 자아 존중감, 학습-자기 주도적 학습능력, 학습동기, 학습전략, 진로-진로탐색, 진로관리, 진로탐색장애의 요인을 갖춘 모형으로 완성되었다. 본 연구 대학생, 특히 기독교 대학의 학생들이 학습을 성공적으로 이끌어가기 위한 진단 도구 개발의 선행적 연구로, 설계 모형과 그 하위 영역, 요인 등을 제안하는 연구였다. 따라서 향후 본 모형을 토대로 기독교 대학의 학생들의 학습 상황을 진단할 수 있는 실질적 도구개발 연구도 수행되어야 할 것이다.

하악골 복합 골절시 구내 열창부 상에 추가 절개 배농술을 이용한 단기간 가변적 악간고정 관리: 증례보고 (THE SHORT-TERM REMOVABLE INTERMAXILLARY FIXATION CARE BY USE OF AN ADDITIVE INCISION & DRAINAGE ON THE ORAL LACERATION WOUNDS ADJACENT WITH MANDIBULAR COMPOUND FRACTURES: REPORT OF A CASE)

  • 모동엽;유재하;최병호;김하랑;이천의;유미현
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • 제32권3호
    • /
    • pp.260-264
    • /
    • 2010
  • Treatment of the mandibular fracture consists of reduction and fixation. The apparatus that is used to keep the jaws together during healing will often reduce the fracture as well. When the jaws are brought together and intermaxillary elastic rubber traction is placed, the occlusion of the teeth will help to orient the fractured parts into good position. Intermaxillary fixation, that is, fixation obtained by elastic bands between the upper & lower jaws to which suitable anchoring devices have been attached, will successfully treat most fractures of the mandible. Arch bars are perhaps the ideal method for intermaxillary fixation. Several types of ready-made arch bars are used. But, daily occupational life and oral hygiene is difficult to maintain during the period of longterm immobilized intermaxillary fixation (commonly 6-8 weeks), owing to malnutrition and emotional disorders in a position of the patient with mandibular fractures. Most mandibular fractures heal well enough to allow removal of fixation in about 6 weeks. Though there are many complications of mandibular fracture, such as infection, hemorrhage, trismus, paresthesia and nonunion, it is favorable to attain the short-term removable intermaxillary fixation care by use of an additive incision & drainage establishment on the oral lacerated wounds of adjacent mandibular compound fractures. The purpose of an additive incision & drainge establishment is the prevention of wound infection & nonunion by removing the hematoma & seroma in the fracture sites.

설신경과 장협신경 전달마취 시행 후 발생된 설부와 협선반부의 장기간 이상감각증 관리 -증례보고- (The Persistent Paresthesia Care on Left Lingual & Buccal Shelf Regions after the Lingual & Long Buccal Nerve Block Anesthesia -A Case Report-)

  • 김하랑;유재하;최병호;모동엽;이천의;김종배
    • 대한치과마취과학회지
    • /
    • 제9권2호
    • /
    • pp.108-115
    • /
    • 2009
  • Trauma to any nerve may lead to persistent paresthesia. Trauma to the nerve sheath can be produced by the needle. The patient frequently reports the sensation of an electric shock throughout the distribution of the nerve involved. It is difficult for the type of needle used in dental practice to actually sever a nerve trunk or even its fibers. Trauma to the nerve produced by contact with the needle is all that is needed to produce paresthesia. Hemorrhage into or around the neural sheath is another cause. Bleeding increases pressure on the nerve, leading to paresthesia. Injection of local anesthetic solutions contaminated by alcohol or sterilizing solution near a nerve produces irritation; the resulting edema increases pressure in the region of the nerve, leading to paresthesia. Persistent paresthesia can lead to injury to adjacent tissues. Biting or thermal or chemical insult can occur without a patient's awareness, until the process has progressed to a serious degree. Most paresthesias resolve in approximately 8 weeks without treatment. In most situations paresthesia is only minimal, with the patient retaining most sensory function to the affected area. In these cases there is only a very slight possibility of self injury. But, the patient complaints the discomfort symptoms of paresthesia, such as causalgia, neuralgiaform pain and anesthesia dolorosa. Most paresthesias involve the lingual nerve, with the inferior alveolar nerve a close second. This is the report of a case, that had the persistent paresthesia care on left lingual & buccal shelf regions after the lingual and long buccal nerve block anesthesia.

  • PDF

전자매체(스마트폰)를 이용한 치과임플란트환자의 구강위생 관리 (Oral hygiene management of patients with dental implants using electronic media (Smartphone))

  • 양현우;김진;최한마음;방일흠;김소영;이천의
    • 대한치과의료관리학회지
    • /
    • 제7권1호
    • /
    • pp.39-43
    • /
    • 2019
  • Smartphone usage has become so common that it has reached 2 billion people in the last year. As a result of this, hospitals have started making use of smartphones at various medical sites and research services for patients. This study aimed to establish support for developing a long distance program for patients with implants who have difficulty visiting clinics or with busy modern lives, by using smartphones for oral hygiene management instruction. The data were collected for 12 weeks, from July 24 to October 21, 2015, for patients who agreed to participate in the study. Although the subjects found the process of transferring photos via smartphone to be cumbersome (75%), the satisfaction level of the oral hygiene management program was excellent for all participating patients, and they all wanted to continue with further management using this process. The results from the phone satisfaction survey showed that oral hygiene self-management after oral hygiene control training by smartphones was mostly equal to previous habits (87.5%) or had partially increased but had not decreased. The need for data on more varied age groups and the issues of protecting the security of personal information on smartphones require further study. However, our study confirmed the efficacy of using electronic media (smartphones) for oral hygiene management in patients with a dental implant due to their improvement of oral hygiene performance as evidenced by less bleeding from probing on post-program visit.

Interrogative Feature Checking in Japanese and Korean

  • Yoshida, Keiko;Yoshida, Tomoyuki
    • 한국언어정보학회:학술대회논문집
    • /
    • 한국언어정보학회 1996년도 Language, Information and Computation = Selected Papers from the 11th Pacific Asia Conference on Language, Information and Computation, Seoul
    • /
    • pp.257-266
    • /
    • 1996
  • PDF