선천성 침골 기형

박헌이,한동희,이종빈,정연훈,박기현,최성준 대한이비인후과학회 2009 대한이비인후과학회지 두경부외과학 Vol.52 No.4

Background and Objectives:A non-progressive and conductive hearing loss with normal eardrum, which has no history of trauma and infection is highly suggestive of a congenital ossicular malformation. Among ossicular anomalies, the most common anomalous ossicle is stapes. However, incus anomaly is sometimes encountered with or without stapes anomaly. The objectives of this study are to describe patterns of incus anomaly, encountered in patients who have a normal eardrum and to analyze their surgical results with special reference to the patterns of incus anomaly. Subjects and Method:We reviewed 26 patients (31 ears) with congenital incus anomaly, which were confirmed through exploratory tympanotomy at Ajou University Hospital from 1994 to 2005. We analyzed temporal bone CT, preoperative and postoperative audiometric findings, and surgical findings. Results: 10 anomalous patterns were detected out of 31 cases of congenital incus anomaly. Incus without its long process was the most common anomalous pattern. In 15 out of 26 cases (57.7%), incus anomaly was associated with stapes anomaly, which was usually unilateral. We could get hearing improvement in 26 out of 31 ears (89.1%). Conclusion:Various anomalous patterns of incus were noted in our series. Incus anomaly was often associated with stapes anomaly, which was usually unilateral. The surgical result of incus anomaly was excellent except the cases without stapes.

수직축 이탈 회전

박헌이 대한평형의학회 2012 Research in Vestibular Science Vol.11 No.-

function. However, only the pathology of the lateral semicircular canal is well

Two Cases of Acute Mastoiditis with Subperiosteal Abscess

박헌이 대한청각학회 2013 Journal of Audiology & Otology Vol.17 No.2

The incidence of mastoiditis in pediatric age has consistently increased over the last two decades due to increase of antibiotic-resistant bacteria. Compared to young patients, occurrence of acute otitis media complications such as acute mastoiditis and subperiosteal abscess is relatively low in adults. Various treatments for acute mastoiditis with subperiosteal abscess such as tympanostomy tube insertion, intravenous antibiotics, and postauricular incision and drainage have avoided the morbidity and necessity of mastoid surgery. Recently, many studies have indicated mastoidectomy only in cases of severe complications or failure of disease improvement after antibiotic treatment and myringotomy. In this report, we present two cases of successful treatment of subperiosteal abscess and discuss the management of acute mastoiditis with subperiosteal abscess in both child and adult.

근거중심의학에 따른 양성 돌발성 두위현훈의 진료지침

박헌이 대한이비인후과학회 2012 대한이비인후과학회지 두경부외과학 Vol.55 No.12

Evidence based medicine is the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients. In terms of benign paroxysmal positional vertigo (BPPV), the costs to the health care system and the indirect costs of BPPV are significant. Despite its significant prevalence, and quality of life and economic impacts, considerable practice variations exist in the management of BPPV across disciplines. In this situation, to educate clinicians on evidence based approach to BPPV would be important. In this article, recent guideline by the American Academy of Otolaryngology Head and Neck Surgery will be reviewed. Korean J Otorhinolaryngol-Head Neck Surg 2012;55:751-6

Congenital Stapes Anomalies with Normal Eardrum

박헌이,한동희,이종빈,한남수,정연훈,박기현 대한이비인후과학회 2009 Clinical and Experimental Otorhinolaryngology Vol.2 No.1

Objectives. A non-progressive and conductive hearing loss with normal eardrum, but no history of trauma and infection, is highly suggestive of a congenital ossicular malformation. Among ossicular anomalies, stapes anomaly is the most common. The purpose of this study is to describe patterns of stapes anomaly and to analyze its surgical outcome with special reference to its patterns. Methods. We conducted a retrospective case review. The subjects comprised 66 patients (76 ears) who were decisively confirmed by the exploratory tympanotomy as congenital stapes anomalies without any anomalies of the tympanic membrane and external auditory canal. The preoperative and postoperative audiological findings, temporal bone computed tomography scan, and operative findings were analyzed. Results. There were 16 anomalous patterns of stapes among which footplate fixation was the most common anomaly. These 16 patterns were classified into 4 types according to the status of stapes footplate. Successful hearing gain was achieved in 51 out of 76 ears (67.1%) after surgical treatment. Conclusion. Footplate fixation was usually bilateral, whereas stapes anomalies associated with other ossicular anomaly were usually unilateral. The success of the surgical treatment of stapes anomaly might depend on its developmental status of the footplate. Stapes anomalies were detected without any fixed patterns, therefore, it is quite possible to detect a large variety of patterns in future. Objectives. A non-progressive and conductive hearing loss with normal eardrum, but no history of trauma and infection, is highly suggestive of a congenital ossicular malformation. Among ossicular anomalies, stapes anomaly is the most common. The purpose of this study is to describe patterns of stapes anomaly and to analyze its surgical outcome with special reference to its patterns. Methods. We conducted a retrospective case review. The subjects comprised 66 patients (76 ears) who were decisively confirmed by the exploratory tympanotomy as congenital stapes anomalies without any anomalies of the tympanic membrane and external auditory canal. The preoperative and postoperative audiological findings, temporal bone computed tomography scan, and operative findings were analyzed. Results. There were 16 anomalous patterns of stapes among which footplate fixation was the most common anomaly. These 16 patterns were classified into 4 types according to the status of stapes footplate. Successful hearing gain was achieved in 51 out of 76 ears (67.1%) after surgical treatment. Conclusion. Footplate fixation was usually bilateral, whereas stapes anomalies associated with other ossicular anomaly were usually unilateral. The success of the surgical treatment of stapes anomaly might depend on its developmental status of the footplate. Stapes anomalies were detected without any fixed patterns, therefore, it is quite possible to detect a large variety of patterns in future.

女子大學生들의 餘暇利用에 關한 調査 : Ⅰ: 餘暇善用에 대한 文獻硏究

朴憲 덕성여자대학교 학생생활연구소 1981 學生生活硏究 Vol.2 No.-

Mock-up 실험에 의한 보일러 분배기의 난방효율 평가

박헌일(Park, Hun Il),허보람(Heo, Bo Ram),곽은구(Kwak, Eun Gu) 한국콘크리트학회 2018 한국콘크리트학회 학술대회 논문집 Vol.30 No.1

Power IC용 저면적 Differential Paired eFuse OTP 메모리 설계

박헌,이승훈,진교홍,하판봉,김영희,Park, Heon,Lee, Seung-Hoon,Jin, Kyo-Hong,Ha, Pan-Bong,Kim, Young-Hee 한국정보전자통신기술학회 2015 한국정보전자통신기술학회논문지 Vol.8 No.2

In this paper, a small-area 32-bit differential paired eFuse OTP memory for power ICs is designed. In case of smaller number of rows than that of columns for the OTP memory cell array, a scheme for the cell array reducing the number of SL driver circuits requiring their larger layout areas by routing the SL (source line) lines supplying programming currents for eFuse links in the row direction instead of the column direction as well as a core circuit is proposed. In addition, to solve a failure of being blown for non-blown eFuse links by the electro-migration phenomenon, a regulated voltage of V2V ($=2V{\pm}0.2V$) is used to a RWL (read word line) driver circuit and a BL (bit line) pull-up driver circuit. The layout size of the designed 32-bit eFuse OTP memory is $228.525{\mu}m{\times}105.435{\mu}m$, which is confirmed to be 20.7% smaller than that of the counterpart using the conventional cell array routing, namely $197.485{\mu}m{\times}153.715{\mu}m$. 본 논문에서는 Power IC용 저면적 32비트 differential paired eFuse OTP 메모리를 설계하였다. OTP 메모리 셀 어레이에서 행의 개수가 열의 개수보다 더 작은 경우 eFuse 링크의 프로그램 전류를 공급하는 SL (Source Line) 구동 라인을 열 방향으로 라우팅하는 대신 행 방향으로 라우팅하므로 레이아웃 면적을 많이 차지하는 SL 구동회로의 수를 줄이는 differential paired eFuse 셀 어레이 방식과 코어 회로를 제안하였다. 그리고 blowing되지 않은 eFuse 링크가 EM (Electro-Migration) 현상에 의해 blowing되는 불량을 해결하기 위해 RWL (Read Word-Line) 구동 회로와 BL (Bit-Line) 풀-업 부하회로에 V2V ($=2V{\pm}0.2V$)의 regulation된 전압을 사용하였다. 설계된 32비트 eFuse OTP 메모리의 레이아웃 면적은 $228.525{\mu}m{\times}105.435{\mu}m$으로 기존의 셀 어레이 라우팅을 이용한 IP 크기인 $197.485{\mu}m{\times}153.715{\mu}m$ 보다 20.7% 더 작은 것을 확인하였다.

청중의 통역품질 평가에 대한 고찰

박헌일 한국외국어대학교 통번역연구소 2019 통번역학연구 Vol.23 No.1

Many studies have found that regardless of who the evaluator is― interpreter or the service user―content-related criteria are deemed the most important in assessing interpreting quality. However, it must be noted that service users, in most cases, do not understand the source language. Naturally, this means that service users are in a disadvantageous position to evaluate the content-related quality of interpreting as they cannot compare the contents of the target text against the source text. The purpose of this study is to investigate how the service user evaluates the content-related quality of interpreting without having access to the source text. Through the use of structural equation modeling, this study shows that service users depend on the form-related criteria and not on the delivery-related criteria to guess how well the original message was delivered content-wise. Furthermore, it is found that when the interpreter fails to maintain a constant rate of speech, the service users regard it as a sign of drop in sense consistency.

기기 장착조건에 따른 내진검증방법 및 적용기술기준

박헌,정동렬,방창준,Park, Hun,Jung, Dong-yeoul,Bang, Chang-joon 한국구조물진단유지관리공학회 2016 한국구조물진단유지관리공학회지 Vol.20 No.1