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Fujimoto</title> <meta name="description" content="Search results for: H. Fujimoto"> <meta name="keywords" content="H. Fujimoto"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="H. 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Fujimoto"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 15</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: H. Fujimoto</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">15</span> Influence of Tactile Symbol Size on Its Perceptibility in Consideration of Effect of Aging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura">T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi"> K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Wada"> T. Wada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We conducted perception experiments on tactile symbols to elucidate the impact of the size of these letters on the level of perceptibility. This study was based on the accessible design perspective and aimed at expanding the availability of tactile symbols for the visually impaired who are unable to read Braille characters. In particular, this study targeted people with acquired visual impairments as users of the tactile symbols. The subjects (young and elderly individuals) in this study had normal vision. They were asked to participate in the experiments to identify tactile symbols while unable to see their hand during the experiments. This study investigated the relation between the size and perceptibility of tactile symbols based on an examination using test pieces of these letters in different sizes. The results revealed that the error rates for both young and elderly subjects converged to almost 0% when 12 mm size tactile symbols were used. The findings also showed that the error rate was low and subjects could identify the symbols in 5 s when 16 mm size tactile symbols were introduced. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accessible%20design" title="accessible design">accessible design</a>, <a href="https://publications.waset.org/abstracts/search?q=tactile%20sense" title=" tactile sense"> tactile sense</a>, <a href="https://publications.waset.org/abstracts/search?q=tactile%20symbols" title=" tactile symbols"> tactile symbols</a>, <a href="https://publications.waset.org/abstracts/search?q=bioinformatic" title=" bioinformatic"> bioinformatic</a> </p> <a href="https://publications.waset.org/abstracts/13010/influence-of-tactile-symbol-size-on-its-perceptibility-in-consideration-of-effect-of-aging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13010.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">351</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Development of a Method to Prepare In-School Tactile Guide Maps for Visually Impaired School Children</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi">K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura"> T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Kawano"> M. Kawano</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Tanaka"> Y. Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Sawada"> M. Sawada</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Oouchi"> S. Oouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Kaneko"> T. Kaneko</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Kanamori"> K. Kanamori</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As part of reasonable accommodation for people with disabilities in Japan, which has ratified the Convention on the Rights of Persons with Disabilities, tactile guide maps are necessary. Such maps can enable visually impaired children to attend schools of special needs education (visual impairments) to grasp the arrangement of classrooms on their school campuses. However, it takes many years to be able to use a tactile guide map without difficulty. Thus, information support, in which audio information is added in addition to tactile information, is required. In the present research, a method to prepare an in-school tactile guide map with an additional audio reading function was developed. This map can enable visually impaired school children attending schools of special needs education (visual impairments) to grasp the arrangement of classrooms on their school campuses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accessible%20design" title="accessible design">accessible design</a>, <a href="https://publications.waset.org/abstracts/search?q=visually%20impaired" title=" visually impaired"> visually impaired</a>, <a href="https://publications.waset.org/abstracts/search?q=braille" title=" braille"> braille</a>, <a href="https://publications.waset.org/abstracts/search?q=tactile%20map" title=" tactile map"> tactile map</a>, <a href="https://publications.waset.org/abstracts/search?q=in-school%20tactile%20guide%20map" title=" in-school tactile guide map"> in-school tactile guide map</a> </p> <a href="https://publications.waset.org/abstracts/13036/development-of-a-method-to-prepare-in-school-tactile-guide-maps-for-visually-impaired-school-children" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13036.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">361</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> Effects Induced by Dispersion-Promoting Cylinder on Fiber-Concentration Distributions in Pulp Suspension Flows</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Sumida">M. Sumida</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Fujimoto"> T. Fujimoto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fiber-concentration distributions in pulp liquid flows behind dispersion promoters were experimentally investigated to explore the feasibility of improving operational performance of hydraulic headboxes in papermaking machines. The proposed research was performed in the form of a basic test conducted on a screen-type model comprising a circular cylinder inserted within a channel. Tests were performed using pulp liquid possessing fiber concentrations ranging from 0.3-1.0 wt% under different flow velocities of 0.016-0.74 m/s. Fiber-concentration distributions were measured using the transmitted light attenuation method. Obtained test results were analyzed, and the influence of the flow velocities on wake characteristics behind the cylinder has been investigated with reference to findings of our preceding studies concerning pulp liquid flows in straight channels. Changes in fiber-concentration distribution along the flow direction were observed to be substantially large in the section from the cylinder to four times its diameter downstream of its centerline. Findings of this study provide useful information concerning the development of hydraulic headboxes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dispersion%20promoter" title="dispersion promoter">dispersion promoter</a>, <a href="https://publications.waset.org/abstracts/search?q=fiber-concentration%20distribution" title=" fiber-concentration distribution"> fiber-concentration distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=hydraulic%20headbox" title=" hydraulic headbox"> hydraulic headbox</a>, <a href="https://publications.waset.org/abstracts/search?q=pulp%20liquid%20flow" title=" pulp liquid flow"> pulp liquid flow</a> </p> <a href="https://publications.waset.org/abstracts/93888/effects-induced-by-dispersion-promoting-cylinder-on-fiber-concentration-distributions-in-pulp-suspension-flows" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93888.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">346</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Influence of Readability of Paper-Based Braille on Vertical and Horizontal Dot Spacing in Braille Beginners</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi">K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura"> T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The number of people who become visually impaired and do not have sufficient tactile experiences has increased by various disease. Especially, many acquired visually impaired persons due to accidents, disorders, and aging cannot adequately read Braille. It is known that learning Braille requires a great deal of time and the acquisition of various skills. In our previous studies, we reported one of the problems in learning Braille. Concretely, the standard Braille size is too small for Braille beginners. And also we are short of the objective data regarding easily readable Braille size. Therefore, it is necessary to conduct various experiments for evaluating Braille size that would make learning easier for beginners. In this study, for the purpose of investigating easy-to-read conditions of vertical and horizontal dot spacing for beginners, we conducted one Braille reading experiment. In this our experiment, we prepared test pieces by use of our original Braille printer with controlling function of Braille size. We specifically considered Braille beginners with acquired visual impairments who were unfamiliar with Braille. Therefore, ten sighted subjects with no experience of reading Braille participated in this experiment. Size of vertical and horizontal dot spacing was following conditions. Each dot spacing was 2.0, 2.3, 2.5, 2.7, 2.9, 3.1mm. The subjects were asked to read one Braille character with controlled Braille size. The results of this experiment reveal that Braille beginners can read Braille accurately and quickly when both vertical and horizontal dot spacing are 3.1 mm or more. This knowledge will be helpful data in considering Braille size for acquired visually impaired persons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=paper-based%20Braille" title="paper-based Braille">paper-based Braille</a>, <a href="https://publications.waset.org/abstracts/search?q=vertical%20and%20horizontal%20dot%20spacing" title=" vertical and horizontal dot spacing"> vertical and horizontal dot spacing</a>, <a href="https://publications.waset.org/abstracts/search?q=readability" title=" readability"> readability</a>, <a href="https://publications.waset.org/abstracts/search?q=acquired%20visual%20impairment" title=" acquired visual impairment"> acquired visual impairment</a>, <a href="https://publications.waset.org/abstracts/search?q=Braille%20beginner" title=" Braille beginner"> Braille beginner</a> </p> <a href="https://publications.waset.org/abstracts/74994/influence-of-readability-of-paper-based-braille-on-vertical-and-horizontal-dot-spacing-in-braille-beginners" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74994.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">178</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Genomic Identification of Anisakis Simplex Larvae by PCR-RAPD</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fumiko%20Kojima">Fumiko Kojima</a>, <a href="https://publications.waset.org/abstracts/search?q=Shuji%20Fujimoto"> Shuji Fujimoto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Anisakiasis is a disease caused by infection with an anisakid larvae, mostly Anisakis simplex. The larvae commonly infect in marine fish and the disease is frequently reported in areas of the world where fish is consumed raw, lightly pickled or salted. In Japan, people have the habit of eating raw fish such as ‘sushi’ or ‘sashimi’, so they have more chance of infection with larvae of anisakid nematodes. There are three sibling species in A. simplex larvae, namely, A. simplex sensu stricto (Asss), A. pegreffii (Ap) and A. simplex C. It was revealed that Ap is dominant among the larvae from fish (Scomber japonics) in the Japan Sea side and Asss is dominant among those of the Pacific Ocean side conversely. Although anisakiasis has happened in Japan among both the Japan Sea side area and the Pacific Ocean side area. The aim of this study was to investigate genetic variations between the siblings (Asss and Ap) and within the same sibling species by random amplified polymorphic DNA (RAPD) technique. In order to investigate the genetic difference among the each A. simplex larvae, we used RAPD technique to differentiate individuals of A. simplex obtained from Scomber japonics fish those were caught in the Japan sea (Goto Islands in Nagasaki Prefecture) and the cost of Pacific Ocean (Kanagawa Prefecture). The RAPD patterns of the control DNA (Genus Raphidascaris) were markedly different from those of the A. simplex. There were differences in amplification patterns between Asss and Ap. The RAPD patterns for larvae obtained from fish of the same sea were somewhat different and variations were detected even among larvae from the same fish. These results suggest the considerable high genetic variability between Asss and Ap and the possible existence of genetic variation within the sibling species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anisakiasis%20in%20Japan" title="Anisakiasis in Japan">Anisakiasis in Japan</a>, <a href="https://publications.waset.org/abstracts/search?q=Anisakis%20simplex" title=" Anisakis simplex"> Anisakis simplex</a>, <a href="https://publications.waset.org/abstracts/search?q=genomic%20identification" title=" genomic identification"> genomic identification</a>, <a href="https://publications.waset.org/abstracts/search?q=PCR-RAPD" title=" PCR-RAPD"> PCR-RAPD</a> </p> <a href="https://publications.waset.org/abstracts/55789/genomic-identification-of-anisakis-simplex-larvae-by-pcr-rapd" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55789.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">181</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">10</span> Evaluation Study of Easily Identification of Tactile Symbol on Body Soap Bottle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi">K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura"> T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Hoshikawa"> Y. Hoshikawa</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Wada"> T. Wada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Japanese industrial standard (JIS) association established one JIS (JIS S 0021) regarding packaging accessible design for people with visual impairments and elderly people in 2000. Recently, tactile symbol on shampoo bottle has been known as one of package accessible design and more effectively used. However, it has been said that people with visual impairment have been not been in trouble with difficulty of identifying body soap bottle between three bottles such as body soap bottle, shampoo bottle, and conditioner bottle. Japanese low vision association asked JIS association to solve this problem. JIS association and Japan cosmetic industry association constituted one review team for solving the problem. The review team asked our research team to make a proposal regarding new tactile symbol on body soap bottle. We conducted user survey and maker survey regarding tactile symbol on body soap bottle with easily identification. Seven test tactile symbol marks were elected in our proposed tactile symbols. In this study, we evaluate easily identification of tactile symbol on body soap bottle. Six visual impaired subjects were participated in our experiment. These subjects were asked to identify body soap bottle between three bottles such as body soap bottle, shampoo bottle, and conditioner bottle. The test tactile symbol on body soap were presented in random order. The test tactile symbols were produced by use of our originally developed 3D raised equipment. From our study, test tactile symbol marks with easily identification were made a short list of our proposed tactile symbols. This knowledge will be helpful in revision of ISO 11156. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tactile%20symbol" title="tactile symbol">tactile symbol</a>, <a href="https://publications.waset.org/abstracts/search?q=easily%20identification" title=" easily identification"> easily identification</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20soap" title=" body soap"> body soap</a>, <a href="https://publications.waset.org/abstracts/search?q=people%20with%20visual%20impairments" title=" people with visual impairments"> people with visual impairments</a> </p> <a href="https://publications.waset.org/abstracts/51767/evaluation-study-of-easily-identification-of-tactile-symbol-on-body-soap-bottle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51767.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">313</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Biorisk Management Education for Undergraduates Studying Clinical Microbiology at University in Japan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shuji%20Fujimoto">Shuji Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Fumiko%20Kojima"> Fumiko Kojima</a>, <a href="https://publications.waset.org/abstracts/search?q=Mika%20Shigematsu"> Mika Shigematsu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biorisk management (Biosafety/Biosecurity) is required for anyone working in a clinical laboratory (including medical/clinical research laboratories) where infectious agents and potentially hazardous biological materials are examined/stored. Proper education and training based on international standards of biorisk management should be provided not only as a part of laboratory safety program in work place but also as a part of introductory training at educational institutions for continuity and to elevate overall baseline of the biorisk management. We reported results of the pilot study of biorisk management education for graduate students majored in laboratory diagnostics previously. However, postgraduate education is still late in their profession and the participants’ interview also revealed importance and demands of earlier biorisk management education for undergraduates. The aim of this study is to identify the need for biosafety/biosecurity education and training program which is designed for undergraduate students who are entering the profession in clinical microbiology. We modified the previous program to include more basic topics and explanations (risk management, principles of safe clinical lab practices, personal protective equipment, disinfection, disposal of biological substances) and provided incorporating in the routine educational system for faculty of medical sciences in Kyushu University. The results of the pre and post examinations showed that the knowledge of the students on biorisk control had developed effectively as a proof of effectiveness of the program even in the undergraduate students. Our study indicates that administrating the basic biorisk management program in the earlier stage of learning will add positive impact to the understanding of biosafety to the health professional education. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biorisk%20management" title="biorisk management">biorisk management</a>, <a href="https://publications.waset.org/abstracts/search?q=biosafety" title=" biosafety"> biosafety</a>, <a href="https://publications.waset.org/abstracts/search?q=biosecurity" title=" biosecurity"> biosecurity</a>, <a href="https://publications.waset.org/abstracts/search?q=clinical%20microbiology" title=" clinical microbiology"> clinical microbiology</a>, <a href="https://publications.waset.org/abstracts/search?q=education%20for%20undergraduates" title=" education for undergraduates"> education for undergraduates</a> </p> <a href="https://publications.waset.org/abstracts/55788/biorisk-management-education-for-undergraduates-studying-clinical-microbiology-at-university-in-japan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55788.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Spatial Indeterminacy: Destabilization of Dichotomies in Modern and Contemporary Architecture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adrian%20Lo">Adrian Lo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since the beginning of modern architecture, ideas of free plan and transparency have proliferated well into current trends of building design, from houses to highrise office buildings. The movement’s notion of a spatially homogeneous, open, and limitless ‘free plan’ stands opposite to the spatially heterogeneous ‘separation of rooms’ defined by load-bearing walls, which in turn triggered new notions of transparency achieved by vast expanses of glazed walls. Similarly, transparency was also dichotomized as something that was physical or optical, as well as something conceptual, akin to spatial organization. As opposed to merely accepting the duality and possible incompatibility of these dichotomies, this paper seeks to ask how can space be both literally and phenomenally transparent, as well as display both homogeneous and heterogeneous qualities? This paper explores this potential destabilization or blurring of spatial phenomena by dissecting the transparent layers and volumes of a series of selected case studies to investigate how different architects have devised strategies of spatial ambivalence, ambiguity, and interpenetration. Projects by Peter Eisenman, Sou Fujimoto, and SANAA will be discussed and analyzed to show how the superimposition of geometries and spaces achieve different conditions of layering, transparency, and interstitiality. Their particular buildings will be explored to reveal various innovative kinds of spatial interpenetration produced through the articulate relations of the elements of architecture, which challenge conventional perceptions of interior and exterior whereby visual homogeneity blurs with spatial heterogeneity. The results show how spatial conceptions such as interpenetration and transparency have the ability to subvert not only inside-outside dialectics but could also produce multiple degrees of interiority within complex and indeterminate spatial dimensions in constant flux as well as present alternative forms of social interaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=interpenetration" title="interpenetration">interpenetration</a>, <a href="https://publications.waset.org/abstracts/search?q=literal%20and%20phenomenal%20transparency" title=" literal and phenomenal transparency"> literal and phenomenal transparency</a>, <a href="https://publications.waset.org/abstracts/search?q=spatial%20heterogeneity" title=" spatial heterogeneity"> spatial heterogeneity</a>, <a href="https://publications.waset.org/abstracts/search?q=visual%20homogeneity" title=" visual homogeneity"> visual homogeneity</a> </p> <a href="https://publications.waset.org/abstracts/136121/spatial-indeterminacy-destabilization-of-dichotomies-in-modern-and-contemporary-architecture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136121.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">177</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Basic Examination of Easily Distinguishable Tactile Symbols Attached to Containers and Packaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura">T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi"> K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Hoshikawa"> Y. Hoshikawa</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Wada"> T. Wada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In Japan, it is expected that reasonable accommodation for persons with disabilities will progress further. In particular, there is an urgent need to enhance information support for visually impaired persons who have difficulty accessing information. Recently, tactile symbols have been attached to various surfaces, such as the content labels of containers and packaging of various everyday products. The advantage of tactile symbols is that they are useful for visually impaired persons who cannot read Braille. The method of displaying tactile symbols is prescribed by the International Organization for Standardization (ISO). However, the quantitative data on the shapes and dimensions of tactile symbols is insufficient. In this study, through an evaluation experiments, we examine the easy-to-distinguish shapes and dimensions of tactile symbols used for various applications, including the content labels on containers and packaging. Visually impaired persons participated in the experiments. They used tactile symbols on a daily basis. The details and processes of the experiments were orally explained to the participants prior to the experiments, and the informed consent of the participants was obtained. They were instructed to touch the test pieces of tactile symbols freely with both hands. These tactile symbols were selected because they were likely to be easily distinguishable symbols on the content labels of top surfaces of containers and packaging based on a hearing survey that involved employees of an organization of visually impaired and a social welfare corporation, as well as academic experts of support technology for visually impaired. The participants then answered questions related to ease of distinguishing of tactile symbols on a scale of 5 (where 1 corresponded to ‘difficult to distinguish’ and 5 corresponded to ‘easy to distinguish’). Hearing surveys were also performed in an oral free answer manner with the participants after the experiments. This study revealed the shapes and dimensions regarding easily distinguishable tactile symbols attached to containers and packaging. We expect that this knowledge contributes to improvement of the quality of life of visually impaired persons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=visual%20impairment" title="visual impairment">visual impairment</a>, <a href="https://publications.waset.org/abstracts/search?q=accessible%20design" title=" accessible design"> accessible design</a>, <a href="https://publications.waset.org/abstracts/search?q=tactile%20symbol" title=" tactile symbol"> tactile symbol</a>, <a href="https://publications.waset.org/abstracts/search?q=containers%20and%20packaging" title=" containers and packaging"> containers and packaging</a> </p> <a href="https://publications.waset.org/abstracts/74619/basic-examination-of-easily-distinguishable-tactile-symbols-attached-to-containers-and-packaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74619.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">219</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Development of Beeswax-Discharge Writing Material for Visually Impaired Persons</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi">K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura"> T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Tanaka"> T. Tanaka</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It has been known that visually impaired persons have some problems in getting visual information. Therefore, information accessibility for the visually impaired persons is very important in a current information society. Some application software with read-aloud function for using personal computer and smartphone are getting more and more popular among visually impaired persons in the world. On the other hand, it is also very important for being able to learn how to read and write characters such as Braille and Visual character. Braille typewriter has been widely used in learning Braille. And also raised-line drawing kits as writing material has been used for decades for especially acquired visually impaired persons. However, there are some drawbacks such as the drawn line cannot be erased. Moreover, visibility of drawing lines is not so good for visually impaired with low vision. We had significant number of requests for developing new writing material for especially acquired visually impaired persons instead of raised-line drawing kits. For conducting development research of novel writing material, we could receive a research grant from ministry of health, labor and welfare in Japanese government. In this research, we developed writing material typed pens and pencils with Beeswax-discharge instead of conventional raised-line drawing kits. This writing material was equipped with cartridge heater for melting beeswax and its heat controller. When this pen users held down the pen tip on the regular paper such as fine paper and so on, the melted beeswax could be discharged from pen tip with valve structure. The beeswax was discharged at 100 gf of holding down force based on results of our previous trial study. The shape of pen tip was semispherical for becoming low friction between pen tip and surface of paper. We conducted one basic experiment to evaluate influence of the curvature of pen tip on ease to write. Concretely, the conditions of curvature was 0.15, 0.35, 0.50, 1.00 mm. The following four interval scales were used as indexes of subjective assessment during writing such as feeling of smooth motion of pen, feeling of comfortable writing, sense of security and feeling of writing fatigue. Ten subjects were asked to participate in this experiment. The results reveal that subjects could draw easily when the radius of the pen tip was 1.00 mm, and lines drawn with beeswax-discharge writing material were easy to perceive. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beeswax-discharge%20writing%20material" title="beeswax-discharge writing material">beeswax-discharge writing material</a>, <a href="https://publications.waset.org/abstracts/search?q=raised-line%20drawing%20kits" title=" raised-line drawing kits"> raised-line drawing kits</a>, <a href="https://publications.waset.org/abstracts/search?q=visually%20impaired%20persons" title=" visually impaired persons"> visually impaired persons</a>, <a href="https://publications.waset.org/abstracts/search?q=pen%20tip" title=" pen tip"> pen tip</a> </p> <a href="https://publications.waset.org/abstracts/75003/development-of-beeswax-discharge-writing-material-for-visually-impaired-persons" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75003.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">308</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Relationship between Readability of Paper-Based Braille and Character Spacing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Nishimura">T. Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Doi"> K. Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Fujimoto"> H. Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Wada"> T. Wada</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Number of people with acquired visual impairments has increased in recent years. In specialized courses at schools for the blind and in Braille lessons offered by social welfare organizations, many people with acquired visual impairments cannot learn to read adequately Braille. One of the reasons is that the common Braille patterns for people visual impairments who already has mature Braille reading skill being difficult to read for Braille reading beginners. In addition, there is the scanty knowledge of Braille book manufacturing companies regarding what Braille patterns would be easy to read for beginners. Therefore, it is required to investigate a suitable Braille patterns would be easy to read for beginners. In order to obtain knowledge regarding suitable Braille patterns for beginners, this study aimed to elucidate the relationship between readability of paper-based Braille and its patterns. This study focused on character spacing, which readily affects Braille reading ability, to determine a suitable character spacing ratio (ratio of character spacing to dot spacing) for beginners. Specifically, considering beginners with acquired visual impairments who are unfamiliar with reading Braille, we quantitatively evaluated the effect of character spacing ratio on Braille readability through an evaluation experiment using sighted subjects with no experience of reading Braille. In this experiment, ten sighted adults took the blindfold were asked to read test piece (three Braille characters). Braille used as test piece was composed of five dots. They were asked to touch the Braille by sliding their forefinger on the test piece immediately after the test examiner gave a signal to start the experiment. Then, they were required to release their forefinger from the test piece when they perceived the Braille characters. Seven conditions depended on character spacing ratio was held (i.e., 1.2, 1.4, 1.5, 1.6, 1.8, 2.0, 2.2 [mm]), and the other four depended on the dot spacing (i.e., 2.0, 2.5, 3.0, 3.5 [mm]). Ten trials were conducted for each conditions. The test pieces are created using by NISE Graphic could print Braille adjusted arbitrary value of character spacing and dot spacing with high accuracy. We adopted the evaluation indices for correct rate, reading time, and subjective readability to investigate how the character spacing ratio affects Braille readability. The results showed that Braille reading beginners could read Braille accurately and quickly, when character spacing ratio is more than 1.8 and dot spacing is more than 3.0 mm. Furthermore, it is difficult to read Braille accurately and quickly for beginners, when both character spacing and dot spacing are small. For this study, suitable character spacing ratio to make reading easy for Braille beginners is revealed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Braille" title="Braille">Braille</a>, <a href="https://publications.waset.org/abstracts/search?q=character%20spacing" title=" character spacing"> character spacing</a>, <a href="https://publications.waset.org/abstracts/search?q=people%20with%20visual%20impairments" title=" people with visual impairments"> people with visual impairments</a>, <a href="https://publications.waset.org/abstracts/search?q=readability" title=" readability"> readability</a> </p> <a href="https://publications.waset.org/abstracts/51766/relationship-between-readability-of-paper-based-braille-and-character-spacing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51766.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">285</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> The Impact of Online Visit Practice by Midwifery Students on Child-Rearing Midwives during The COVID-19 Pandemic: A Qualitative Descriptive Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mari%20Murakami">Mari Murakami</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromi%20Kawasaki"> Hiromi Kawasaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Saori%20Fujimoto"> Saori Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoko%20Ueno"> Yoko Ueno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: In Japan, one of the goals of midwifery education is the development of one’s ability to comprehensively support the child-rearing generation in collaboration with professionals from other disciplines. However, in order to prevent the spread of Covid-19, it has become extremely difficult to provide face-to-face support for mothers and children. Early on in the pandemic, we sought help from three parenting midwives as an alternative and attempted an online visit. Since midwives who are raising children respond to the training as both mothers who are care recipients and midwives as care providers. Therefore, we attempted to verify the usefulness of midwives experiencing training as mothers by clarifying the effects on those midwives who are raising children and who have experienced online visit training by students. Methods: The online visitations were conducted in June 2020. The collaborators were three midwives who were devoted to childcare. During the online visit training, we used the feedback records of their questions given by the collaborators (with their permission) to the students. The verbatim record was created from the records. Qualitative descriptive analysis was used, and subcategories and categories were extracted. This study was approved by the Ethical Committee for Epidemiology of Hiroshima University. Results: The average age of the three midwives was 36.3 years, with an average of 12.3 years of experience after graduation. They were each raising multiple children (ranging between a minimum of 2 and a maximum of 4 children). Their youngest infants were 6.7 months old on average for all. Five categories that emerged were: contributing to the development of midwifery students as a senior; the joy of accepting the efforts of a mother while raising children; recalling the humility of beginners through the integrity of midwifery students; learning opportunities about the benefits of online visits; and suggesting further challenges for online visits. Conclusion: The online visit training was an opportunity for midwives who are raising their own children to reinforce an honest and humble approach based on the attitude of the students, for self-improvement, and to reflect on the practice of midwifery from another person’s viewpoint. It was also noted that the midwives contributed to the education of midwifery students. Furthermore, they also agreed with the use of online visitations and considered the advantages and disadvantages of its use from the perspective of mothers and midwives. Online visits were seen to empower midwives on childcare leave, as their child-rearing was accepted and admired. Online visits by students were considered to be an opportunity to not only provide a sense of fulfillment as a recipient of care but also to think concretely about career advancement, during childcare leave, regarding the ideal way for midwifery training and teaching. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=child-rearing%20midwife" title="child-rearing midwife">child-rearing midwife</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19%20pandemic" title=" COVID-19 pandemic"> COVID-19 pandemic</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20visit%20practice" title=" online visit practice"> online visit practice</a>, <a href="https://publications.waset.org/abstracts/search?q=qualitive%20descriptive%20study" title=" qualitive descriptive study"> qualitive descriptive study</a> </p> <a href="https://publications.waset.org/abstracts/133372/the-impact-of-online-visit-practice-by-midwifery-students-on-child-rearing-midwives-during-the-covid-19-pandemic-a-qualitative-descriptive-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/133372.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Nursing Students’ Learning Effects of Online Visits for Mothers Rearing Infants during the COVID-19 Pandemic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saori%20Fujimoto">Saori Fujimoto</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiromi%20Kawasaki"> Hiromi Kawasaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Mari%20Murakami"> Mari Murakami</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoko%20Ueno"> Yoko Ueno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Coronavirus disease (COVID-19) has been spreading throughout the world. In Japan, many nursing universities have conducted online clinical practices to secure students’ learning opportunities. In the field of women’s health nursing, even after the pandemic ended, it will be worthwhile to utilize online practice in declining birthrate and reducing the burden of mothers. This study examined the learning effects of conducting online visits for mothers with infants during the COVID-19 pandemic by nursing students to enhance the students’ ability to carry out the online practice even in ordinary times effectively. Methods: Students were divided into groups of three, and information on the mothers was assessed, and the visits were planned. After role-play was conducted by the students and teachers, an online visit was conducted. The analysis target was the self-evaluation score of nine students who conducted online visits in June 2020 and had consented to participate. The evaluation contents included three items for assessment, two items for planning, one item for ethical consideration, five items for nursing practice, and two items for evaluation. The self-evaluation score ranged from 4 (‘Can do with a little advice’) to 1 (‘Can’t do with a little advice’). A univariate statistical analysis was performed. This study was approved by the Ethical Committee for Epidemiology of Hiroshima University. Results: The items with the highest mean (standard deviation) scores were ‘advocates for the dignity and the rights of mothers’ (3.89 (0.31)) and ‘communication behavior needed to create a trusting relationship’ (3.89 (0.31)).’ Next were the ‘individual nursing practice tailored to mothers (3.78 (0.42))’ and ‘review own practice and work on own task (3.78 (0.42)).’ The mean (standard deviation) of the items by type were as follows: three assessment items, 3.26 (0.70), two planning items, 3.11 (0.49), one ethical consideration item, 3.89 (0.31), five nursing practice items, 3.56 (0.54), and two evaluation items, 3.67 (0.47). Conclusion: The highest self-evaluations were for ‘advocates for the dignity and the rights of mothers’ and ‘communication behavior needed to create a trusting relationship.’ These findings suggest that the students were able to form good relationships with the mothers by improving their ability to effectively communicate and by presenting a positive attitude, even when conducting health visits online. However, the self-evaluation scores for assessment and planning were lower than those of ethical consideration, nursing practice, and evaluation. This was most likely due to a lack of opportunities and time to gather information and the need to modify and add plans in a short amount of time during one online visit. It is necessary to further consider the methods used in conducting online visits from the following viewpoints: methods of gathering information and the ability to make changes through multiple visits. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=infants" title="infants">infants</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20effects" title=" learning effects"> learning effects</a>, <a href="https://publications.waset.org/abstracts/search?q=mothers" title=" mothers"> mothers</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20visit%20practice" title=" online visit practice"> online visit practice</a> </p> <a href="https://publications.waset.org/abstracts/133534/nursing-students-learning-effects-of-online-visits-for-mothers-rearing-infants-during-the-covid-19-pandemic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/133534.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">140</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> Relationship between Thumb Length and Pointing Performance on Portable Terminal with Touch-Sensitive Screen</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Takahiro%20Nishimura">Takahiro Nishimura</a>, <a href="https://publications.waset.org/abstracts/search?q=Kouki%20Doi"> Kouki Doi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Fujimoto"> Hiroshi Fujimoto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Touch-sensitive screens that serve as displays and input devices have been adopted in many portable terminals such as smartphones and personal media players, and the market of touch-sensitive screens has expanded greatly. One of the advantages of touch-sensitive screen is the flexibility in the graphical user interface (GUI) design, and it is imperative to design an appropriate GUI to realize an easy-to-use interface. Moreover, it is important to evaluate the relationship between pointing performance and GUI design. There is much knowledge regarding easy-to-use GUI designs for portable terminals with touch-sensitive screens, and most have focused on GUI design approaches for women or children with small hands. In contrast, GUI design approaches for users with large hands have not received sufficient attention. In this study, to obtain knowledge that contributes to the establishment of individualized easy-to-use GUI design guidelines, we conducted experiments to investigate the relationship between thumb length and pointing performance on portable terminals with touch-sensitive screens. In this study, fourteen college students who participated in the experiment were divided into two groups based on the length of their thumbs. Specifically, we categorized the participants into two groups, thumbs longer than 64.2 mm into L (Long) group, and thumbs longer than 57.4 mm but shorter than 64.2 mm into A (Average) group, based on Japanese anthropometric database. They took part in this study under the authorization of Waseda University’s ‘Ethics Review Committee on Research with Human Subjects’. We created an application for the experimental task and implemented it on the projected capacitive touch-sensitive screen portable terminal (iPod touch (4th generation)). The display size was 3.5 inch and 960 × 640 - pixel resolution at 326 ppi (pixels per inch). This terminal was selected as the experimental device, because of its wide use and market share. The operational procedure of the application is as follows. First, the participants placed their thumb on the start position. Then, one cross-shaped target in a 10 × 7 array of 70 positions appeared at random. The participants pointed the target with their thumb as accurately and as fast as possible. Then, they returned their thumb to the start position and waited. The operation ended when this procedure had been repeated until all 70 targets had each been pointed at once by the participants. We adopted the evaluation indices for absolute error, variable error, and pointing time to investigate pointing performance when using the portable terminal. The results showed that pointing performance varied with thumb length. In particular, on the lower right side of the screen, the performance of L group with long thumb was low. Further, we presented an approach for designing easy-to- use button GUI for users with long thumbs. The contributions of this study include revelation of the relationship between pointing performance and user’s thumb length when using a portable terminal in terms of accuracy, precision, and speed of pointing. We hope that these findings contribute to an easy-to-use GUI design for users with large hands. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pointing%20performance" title="pointing performance">pointing performance</a>, <a href="https://publications.waset.org/abstracts/search?q=portable%20terminal" title=" portable terminal"> portable terminal</a>, <a href="https://publications.waset.org/abstracts/search?q=thumb%20length" title=" thumb length"> thumb length</a>, <a href="https://publications.waset.org/abstracts/search?q=touch-sensitive%20screen" title=" touch-sensitive screen"> touch-sensitive screen</a> </p> <a href="https://publications.waset.org/abstracts/74614/relationship-between-thumb-length-and-pointing-performance-on-portable-terminal-with-touch-sensitive-screen" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74614.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">164</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Effects of Hydrogen Bonding and Vinylcarbazole Derivatives on 3-Cyanovinylcarbazole Mediated Photo-Cross-Linking Induced Cytosine Deamination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Siddhant%20Sethi">Siddhant Sethi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasuharu%20Takashima"> Yasuharu Takashima</a>, <a href="https://publications.waset.org/abstracts/search?q=Shigetaka%20Nakamura"> Shigetaka Nakamura</a>, <a href="https://publications.waset.org/abstracts/search?q=Kenzo%20Fujimoto"> Kenzo Fujimoto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Site-directed mutagenesis is a renowned technique to introduce specific mutations in the genome. To achieve site-directed mutagenesis, many chemical and enzymatic approaches have been reported in the past like disulphite induced genome editing, CRISPR-Cas9, TALEN etc. The chemical methods are invasive whereas the enzymatic approaches are time-consuming and expensive. Most of these techniques are unusable in the cellular application due to their toxicity and other limitations. Photo-chemical cytosine deamination, introduced in 2010, is one of the major technique for enzyme-free single-point mutation of cytosine to uracil in DNA and RNA, wherein, 3-cyanovinylcarbazole nucleoside (CNVK) containing oligodeoxyribonucleotide (ODN) having CNVK at -1 position to that of target cytosine is reversibly crosslinked to target DNA strand using 366 nm and then incubated at 90ºC to accommodate deamination. This technique is superior to enzymatic methods of site-directed mutagenesis but has a disadvantage that it requires the use of high temperature for the deamination step which restricts its applicability in the in vivo applications. This study has been focused on improving the technique by reducing the temperature required for deamination. Firstly, the photo-cross-linker, CNVK has been modified by replacing cyano group attached to vinyl group with methyl ester (OMeVK), amide (NH2VK), and carboxylic acid (OHVK) to observe the acceleration in the deamination of target cytosine cross-linked to vinylcarbazole derivative. Among the derivatives, OHVK has shown 2 times acceleration in deamination reaction as compared to CNVK, while the other two derivatives have shown deceleration towards deamination reaction. The trend of rate of deamination reaction follows the same order as that of hydrophilicity of the vinylcarbazole derivatives. OHVK being most hydrophilic has shown highest acceleration while OMeVK is least hydrophilic has proven to be least active for deamination. Secondly, in the related study, the counter-base of the target cytosine, guanine has been replaced by inosine, 2-aminopurine, nebularine, and 5-nitroindole having distinct hydrogen bonding patterns with target cytosine. Among the ODNs with these counter bases, ODN with inosine has shown 12 fold acceleration towards deamination of cytosine cross-linked to CNVK at physiological conditions as compared to guanosine. Whereas, when 2-aminopurine, nebularine, and 5-nitroindole were used, no deamination reaction took place. It can be concluded that inosine has potential to be used as the counter base of target cytosine for the CNVK mediated photo-cross-linking induced deamination of cytosine. The increase in rate of deamination reaction has been attributed to pattern and number of hydrogen bonding between the cytosine and counter base. One of the important factor is presence of hydrogen bond between exo-cyclic amino group of cytosine and the counter base. These results will be useful for development of more efficient technique for site-directed mutagenesis for C → U transformations in the DNA/RNA which might be used in the living system for treatment of various genetic disorders and genome engineering for making designer and non-native proteins. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=C%20to%20U%20transformation" title="C to U transformation">C to U transformation</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%20editing" title=" DNA editing"> DNA editing</a>, <a href="https://publications.waset.org/abstracts/search?q=genome%20engineering" title=" genome engineering"> genome engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=ultra-fast%20photo-cross-linking" title=" ultra-fast photo-cross-linking"> ultra-fast photo-cross-linking</a> </p> <a href="https://publications.waset.org/abstracts/70896/effects-of-hydrogen-bonding-and-vinylcarbazole-derivatives-on-3-cyanovinylcarbazole-mediated-photo-cross-linking-induced-cytosine-deamination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70896.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">235</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 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