An alternative evaluation of the LTB behavior of mono-symmetric beam-columns

Tolga Yilmaz,Nevzat Kiraç,Özgür Anil 국제구조공학회 2019 Steel and Composite Structures, An International J Vol.30 No.5

Beam-columns are structural members subjected to a combination of axial and bending forces. Lateral-torsional buckling is one of the main failure modes. Beam-columns that are bent about its strong axis may buckle out of the plane by deflecting laterally and twisting as the values of the applied loads reach a limiting state. Lateral-torsional buckling failure occurs suddenly in beam-column elements with a much greater in-plane bending stiffness than torsional or lateral bending stiffness. This study intends to establish a unique convenient closed-form equation that it can be used for calculating critical elastic lateraltorsional buckling load of beam-column in the presence of a known axial load. The presented equation includes first order bending distribution, the position of the loads acting transversely on the beam-column and mono-symmetry property of the section. Effects of axial loads, slenderness and load positions on lateral torsional buckling behavior of beam-columns are investigated. The proposed solutions are compared to finite element simulations where thin-walled shell elements including warping are used. Good agreement between the analytical and the numerical solutions is demonstrated. It is found out that the lateral-torsional buckling load of beam-columns with mono-symmetric sections can be determined by the presented equation and can be safely used in design procedures.

Supramolecular Donor−Acceptor Heterojunctions by Vectorial Stepwise Assembly of Porphyrins and Coordination-Bonded Fullerene Arrays for Photocurrent Generation

Kira, Aiko,Umeyama, Tomokazu,Matano, Yoshihiro,Yoshida, Kaname,Isoda, Seiji,Park, Jong Kang,Kim, Dongho,Imahori, Hiroshi American Chemical Society 2009 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.131 No.9

<P>A novel strategy for constructing a vertical arrangement of bicontinuous donor-acceptor arrays on a semiconducting electrode has been developed. The relationship between the film structure and the photoelectrochemical properties has been elucidated as a function of the number of donor layers for the first time. The maximum incident photon-to-current efficiency value (21%) is comparable to the highest value (20%) reported for vertical arrangements of bicontinuous donor-acceptor arrays on electrodes.</P>

The Strategy of Colombians Natural Disaster Management: Case of Putumayo

( Kira Potowski ),김준엽 ( Jun Yeup Kim ) 국제지역학회 2015 국제지역연구 Vol.19 No.3

The study illustrates that the Colombian natural disaster management neither on the national nor on the regional and local government level is satisfying the need of a well-working natural disaster management system in order to reduce risk before a disaster and provide immediate aid and rehabilitation actions afterwards. Meanwhile Japan is globally recognized for its efficient system various ideas should be immediately adapted by the different Colombian government levels. In order to improve its current disaster management practices, the Colombian government has to integrate the regional and local level much stronger into the whole natural disaster management system. The current evaluations on the natural disaster management in Colombia focus on the national government policies only. This paper goes further and observes the current state of actions on the regional and local level before, during and after a natural disaster. By benchmarking actions realized in Japan valuable recommendations for Colombian government officials on the national and local level are developed.

Peer-assisted feedback: a successful approach for providing feedback on United States Medical Licensing Exam-style clinical skills exam notes in the United States

Kira Nagoshi,Zareen Zaidi,Ashleigh Wright,Carolyn Stalvey 한국보건의료인국가시험원 2019 보건의료교육평가 Vol.16 No.-

PurposePeer-assisted learning (PAL) promotes the development of communication, facilitates improvements in clinical skills, and is a way to provide feedback to learners. We utilized PAL as a conceptual framework to explore the feasibility of peer-assisted feedback (PAF) to improve note-writing skills without requiring faculty time. The aim was to assess whether PAL was a successful method to provide feedback on the United States Medical Licensing Exams (USMLE)-style clinical skills exam notes by using student feedback on a survey in the United States. MethodsThe University of Florida College of Medicine administers clinical skills examination (CSEs) that include USMLE-like note-writing. PAL, in which students support the learning of their peers, was utilized as an alternative to faculty feedback. Second-year (MS2) and third-year (MS3) medical students taking CSEs participated in faculty-run note-grading sessions immediately after testing, which included explanations of grading rubrics and the feedback process. Students graded an anonymized peer’s notes. The graded material was then forwarded anonymously to its student author to review. Students were surveyed on their perceived ability to provide feedback and the benefits derived from PAF using a Likert scale (1-6) and open-ended comments during the 2017-2018 academic year. ResultsStudents felt generally positively about the activity, with mean scores for items related to educational value of 4.49 for MS2s and 5.11 for MS3s (out of 6). MS3s perceived peer feedback as constructive, felt that evaluating each other’s notes was beneficial, and felt that the exercise would improve their future notes. While still positive, MS2 students gave lower scores than the MS3 students. ConclusionPAF was a successful method of providing feedback on student CSE notes, especially for MS3s. MS2s commented that although they learned during the process, they might be more invested in improving their note-writing as they approach their own USMLE exam.

Isolation and Evaluating the Effectiveness of a New Bacteriophage MK21 Against Xanthomonas citri Subsp. citri 27-12 Causing Citrus Canker

Kira MOON,Seung-Hak LEE,Seung-hui SONG,Ho Bong HYUN,Weon-Jong YOON,Yong-Hwan JUNG,Miye KWON 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.4

The Effect of the Preparing Methods of Me+Al (Me=Ti, Ni, Ru) of Powder Blends on Compaction Features, Structure-Phase Transformations and Properties of Transition Metal Aluminides Compacts

Povarova Kira,Drozdov Andrey,Kazanskaya Nadezhda,Morozov Aleksei,Padalko Anatolii,Nikolaev Aleksandr 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1

Present State and Prospect of Mushroom Cultivation in Japan

Kesayoshi Kira 한국자원식물학회 1996 한국자원식물학회 학술심포지엄 Vol.1996 No.-

Metaviromics coupled with phage-host identification to open the viral ‘black box’

Moon Kira,Cho Jang-Cheon 한국미생물학회 2021 The journal of microbiology Vol.59 No.3

Viruses are found in almost all biomes on Earth, with bacteriophages (phages) accounting for the majority of viral particles in most ecosystems. Phages have been isolated from natural environments using the plaque assay and liquid medium- based dilution culturing. However, phage cultivation is restricted by the current limitations in the number of culturable bacterial strains. Unlike prokaryotes, which possess universally conserved 16S rRNA genes, phages lack universal marker genes for viral taxonomy, thus restricting cultureindependent analyses of viral diversity. To circumvent these limitations, shotgun viral metagenome sequencing (i.e., metaviromics) has been developed to enable the extensive sequencing of a variety of viral particles present in the environment and is now widely used. Using metaviromics, numerous studies on viral communities have been conducted in oceans, lakes, rivers, and soils, resulting in many novel phage sequences. Furthermore, auxiliary metabolic genes such as ammonic monooxygenase C and β-lactamase have been discovered in viral contigs assembled from viral metagenomes. Current attempts to identify putative bacterial hosts of viral metagenome sequences based on sequence homology have been limited due to viral sequence variations. Therefore, culture- independent approaches have been developed to predict bacterial hosts using single-cell genomics and fluorescentlabeling. This review focuses on recent viral metagenome studies conducted in natural environments, especially in aquatic ecosystems, and their contributions to phage ecology. Here, we concluded that although metaviromics is a key tool for the study of viral ecology, this approach must be supplemented with phage-host identification, which in turn requires the cultivation of phage-bacteria systems.

Home Oxygen Therapy for Patients of Chronic Respiratory Failure in Japan

( Shiro Kira ) 대한결핵 및 호흡기학회 1995 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.81 No.-

‘메타버스 기술을 이용한 전시 공간과 활용 가능성’에 대한 연구

김기라(Kim, Kira) 한국디자인리서치학회 2021 한국디자인리서치 Vol.6 No.4

21세기 들어 새로운 개념과 기술로 각광받는 메타버스는 기술의 혁신적인 발전과 더불어, 또한 팬데믹 현상과 맞물려 폭발적인 가능성을 인정받고 현대 산업의 다양한 분야에 상용 서비스를 개시하기에 이르렀다. 문화예술 분야 역시 메타버스의 신개념과 신기술의 자장 안에 놓이게 되었고, 그 중에서 메타버스의 가상영역은 특히 전시 공간의 새로운 확장과 관람객의 큐레이션(curation) 역할을 주어지게 했다는 점에서 주목할 만한 가치를 가지고 있다. 이미 메타버스 서비스가 제페토, 스페이셜 등 업계 서비스로 상용화 되었으며, 전시 체험의 새로운 감각을 확장했다는 것은 여러 사례를 통해 입증되었다. 메타버스 기술은 또한 기존의 물리적인 시 공간과 제약에서 벗어나 대안적이면서 획기적으로 전시공간을 공유와 향유 중심인 공간으로 바꿔나가고 있다. 실물과 물질화 위주의 전통적 대면의 아날로그 전시방식을 비 물질화 된 플랫폼 전시라는 새로운 개념의 전시 디자인과 체험 공간으로 발전시키고 있는 것이다. 원고는 메타버스 서비스가 전통적인 전시 공간의 역할에 새로운 문제를 제기하며, 그 활용과 가능성을 제시함으로써 관람자 중심의 새로운 전시 관람 행태를 형성하고, 메타버스의 활용과 메타버스 기술이 미치는 미래 전시 공간과 활용 가능의 범주를 미술관과 박물관이 디지털 아카이브 공간에 적용 가능하도록 재고하는 단초를 제공하며, 나아가 예술 작품의 원본성의 가치를 공고히 할 수 있는 가능성에 대해서도 예측해 보고자 한다. Metaverse, which has been spotlighted as a new concept and technology in the 21st century, has been recognized for its explosive potential in line with the innovative development of technology and has launched commercial services in various fields of modern industry. The field of culture and arts has also been placed in the magnetic field of new concepts and new technologies of Metaverse, and among them, the virtual area of Metaverse is particularly valuable in that it has given a new expansion of exhibition spaces and curation for visitors. Metaverse services have already been commercialized as industry services such as Zepeto and Space, and it has been proven through several cases that they have expanded their new sense of exhibition experience. Metaverse technology is also shifting away from the existing physical time and constraints and transforming the exhibition space into a space centered on sharing and enjoyment. It is developing a new concept of exhibition design and experience space called a de-materialized platform exhibition in the traditional face-to-face analog exhibition method focused on real-life and materialization. The Plaintiff raises new issues in the role of traditional exhibition spaces, creates new exhibition viewing behaviors centered on viewers by presenting their utilization and possibilities, provides a clue to reconsider future exhibition spaces and available categories for art galleries and museums to apply to digital archives.