Odontogenic keratocyst (OKC), also known as keratocystic odontogenic tumor, is a distinct clinicopathologic lesion that can be clearly identified by histologic examination. Clinically, OKC is characterized by a high recurrence rate. This report describes a rare case of OKC with mural calcification in the maxilla of a 47-year-old male patient. Orthopantomography and Cone Beam Computed Tomography showed full opacification with calcification and lateral wall resorption in the left maxillary sinus, destroying the sinus floor. Hard tissue deposits have rarely been reported in the connective tissue walls of OKC. The importance of calcified material formation to the biological behavior of OKCs is unclear. Although its prognostic value has not been studied, the presence of calcification materials does not appear to increase the risk of recurrence. Study of a number of samples would be needed to determine the nature of the correlation between the presence of calcified materials and recurrence.

To accurately determine the resection margin for maxillary cancer, it is important to closely examine the extent of tumor infiltration into the maxilla, nasal cavity, maxillary sinus, palate, and surrounding tissues. Various methods have been described for the resection of maxillary tumors, such as alveolectomy, partial maxillectomy, subtotal maxillectomy, total maxillectomy, and extended maxillectomy. The objective of this study was to introduce external carotid artery (ECA) ligation on the ipsilateral side, a perioperative bleeding control method with fewer complications. Incidence of major bleeding during maxillectomy is a rare but potentially life-threatening complication. Cases of temporary bleeding from an internal maxillary artery or other sites can be stopped, packed, and compressed. However, bleeding control is eventually achieved by ligation of the ECA or selective embolization. Herein, we report the case of a 60-year-old male with squamous cell carcinoma of the right maxilla, which was eventually treated with subtotal maxillectomy along with an elective ECA ligation for intraoperative bleeding control. The procedure produced no preoperative or postoperative bleeding. ECA ligation is a simple, effective, safe, and (at the operator’s discretion) recommended method of perioperative bleeding control during maxillectomy.

본 연구는 1952년 ‘평화선 선언’ 에 대한 관련국가 간의 논쟁과 주요 쟁점을 분석하여 평화선 선언의 법적 정당성을 규명하는 것이 주목적이다. 평화선 선언은 일제강점기를 전후로 이어져온 일본의 한반도 연안 어장 침탈에 대응하여 한반도 인접해양에 한국의 관할권을 선포한 조치였다. 하지만 평화선 선언 이후 한국은 일본, 미국, 영국, 중화민국 등 국가로부터의 강력한 반대에 부딪치게 되었다. 한국과 관련국 간의 평화선 논쟁은 크게 두 가지의 쟁점에서 논의되었다. 첫 번째 쟁점은, ‘평화선은 영해선인가?’ 였고, 두 번째 쟁점은 ‘평화선이 공해어업에 관한 국제법을 위반했는가?’ 였다. 두 가지 쟁점에 대한 분석 결과, 평화선은 한국 정부의 입장, 후속 법률의 내용, 별개의 영해제도 시행 등을 고려했을 때 영해선이 아니었다는 결론을 내릴 수 있었다. 그리고 평화선 선언은 당시 새롭게 변경된 공해어업에 관한 국제관습법에 부합하는 조치였으며, 현재의 배타적 어업수역과 EEZ의 창설에 기여한 ‘법창설적 효력’을 지닌 관행으로 평가할 수 있었다. 따라서 평화선 선언은 당대의 국제법에 부합했으며, 현대 국제해양법의 발전에 기여한 관행으로 인정받아야 하는 것이다.

The purpose of this study is to classify types of the eaves structure of buildings with the Jusimpo-type structure and to analyze the characteristics of each eaves structure. For this objective, forty buildings were selected and investigated. The results of analysis are summarized as follows. First, the main members of framework which handle a load burden on the long-rafter(長椽) are classified as the Jusim-dori(柱心道里) and the Oemok-dori(外目道里). Based on the method of handling a load, the eaves structure is classified into three types; the Jusim-processing-type(柱心中心形), the Oemok-processing-type(外目中 心形), and the Oemok-processing-variant-type(外目中心變異形). The Jusim-processing-type is the set where the internal length of a long-rafter is longer than the length of the eaves on the basis of the center of a column. The Oemok-processing-type is the set where the external length of a long-rafter is longer than the internal length of it. And the Oemok-processing-variant-type is the set where the internal length of a long-rafter is longer than the external length of it, but it is shorter than the length of the eaves which includes the extruded length of a Buyeon(浮椽). Second, the Jusim-processing-type had been generally adopted in the Jusimpo-type structure of the Goryeo Dynasty. But since the 17th century, the Oemok-processing-type had the highest application rate. Third, the change from the Jusimdori-processing-structure to the Oemokdori-processing-structure means that the long-rafter is moved to the direction of outside of the building, and thus the Jung-dori(中道里) is gradually moved to the column center. And, the change of the eaves with the Jusimpo-type structure was not a process for increasing the length of the eaves but a process for adopting the advantages of the Dapo-type structure by changing the arrangement of purlin. Fourth, the change from the Jusimpo-type structure to the Dapo-type structure could be understood as a process for moving the main point for handling a load from the Jusim-dori to the Oemok-dori.

Systemic Functional linguistics considers Modality as the speaker’s attitude betwe en “yes” and “no”. Based on this, we discuss the Chinese modality system. First, we review what has been done on Chinese modals by the previous researchers. Then, we introduce Halliday’s modality system in English to establish a Chinese modality system and analyze the syntactic and semantic features of the typical modal verbs to point out the negotiation of Chinese modality.

The purpose of this study is to discover the characteristics and the change of the framed structure with triple beam. 61 existing buildings with the triple beam structure were selected and analyzed extensively. The result of this study could be described in detail like below. The triple beam structure is used in the highly graded and symbolized building like the Buddhist sanctum and the Confucian sanctum. And the triple beam structure was chiefly used in $1600{\sim}1800's$. Generally, 1 Koju-type with Toikan(退間) is applied to the triple beam structure. Despite of the sameness of framed structure, there is a tendency that the rear Toikan(後退間) is used in the Buddhist sanctum and the front Toikan(前退間) is used in the Confucian sanctum. This different application of the Toikan(退間) resulted from the different spatial characteristics which reflect function and grade of the building. The application of Sangjungdori(上中道里, upper purlin) and two Danyeon(短椽, short rafter) is a necessary consequence, because Jungbo(중보, middle beam) is located between Daebo(대보, beam) and Jongbo(종보, small and high located beam) as an additional member of frame. And these are essential characteristics of the framed structure with triple beam. The triple beam structure is formed in a transitional period, as the result from eliminating the inner high-column from the 2 Koju and double beam structure. Though the Daebo is longer, the structure is more stable. But the rate of application of the triple beam structure is low, because it does not exceed the double beam structure in merits. Some of buildings with the triple beam structure has the asymmetrical characteristic in design, which is appeared in the latter period of Joseon Dynasty.

‘교실 친화적’(classroom-friendly)이라는 용어는 상향적(후향적) 접근 방식이야 말로 교육 개선을 위한 적합한 방안이라는 인식의 변화를 반영한 것이다. 이러한 맥락에서 개정 사회과 교육과정에서도 대강화 방침에 따라 내용 체계 면에서 상세성이 상당이 약화되었다. 본고에서 주목하는 교실 친화적 사회과 수업의 의미 역시 교실 수업의 주체인 교사를 타자화시키지 않으면서 교사 스스로 주체가 된 ‘사회과 교실 수업’은 어떠한 모습일지에 관심을 갖는다. 이제까지 사회과 교사의 교실수업을 개선하고 향상시킬 수 있는 방법에 대해서 여러 연구들이 있어 왔지만 너무 처방적이어서 교사들에게 비전을 제시하지 못한다는 비판과 함께 교사가 연구자로 살아가기에는 교실 현장의 상황적, 제도적, 문화적 구속 요인들이 너무 크다는 회의적인 시각이 팽배해 있다. 본고에서는 이와 같은 문제점들을 생각하면서 교육과정 재구성자로서의 교사 전문성과 교실생태학적 교사 연구의 두 가지를 중심으로 전개하고자 한다. 이러한 두 가지 방향에서의 고찰은 교사로서의 삶을 안과 밖에서 동시에, 그리고 성찰적으로 바라볼 수 있는 계기가 될 것으로 기대한다.