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tweak finalSlide
author ichikitakahiro <e165713@ie.u-ryukyu.ac.jp>
date Sat, 12 Feb 2022 21:43:10 +0900
parents fa31358d38f1
children 181eec546ad2
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10 <title>GearsOSの分散ファイルシステムの設計</title>
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12 <meta name="generator" content="Slide Show (S9) v4.1.0 on Ruby 2.6.8 (2021-07-07) [universal.x86_64-darwin21]">
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13 <meta name="author" content="Takahiro Ikki, Shinji Kono" >
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25 <script src="s6/js/jquery.slideshow.footer.js"></script>
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26 <script src="s6/js/jquery.slideshow.autoplay.js"></script>
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28 <!-- prettify -->
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32 <style>
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33 .slide {page-break-after: always;}
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34 </style>
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39 </head>
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40 <body>
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42 <div class="layout">
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43 <div id="header"></div>
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46 <img src="s6/images/logo.svg" width="200px">
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47 </div>
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48 </div>
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51 <div class="presentation">
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53 <div class='slide cover'>
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54 <table width="90%" height="90%" border="0" align="center">
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55 <tr>
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56 <td>
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57 <div align="center">
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58 <h1><font color="#808db5">GearsOSの分散ファイルシステムの設計</font></h1>
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59 </div>
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60 </td>
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61 </tr>
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62 <tr>
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63 <td>
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64 <div align="left">
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65 Takahiro Ikki, Shinji Kono
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66 琉球大学理工学研究科情報工学専攻
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67 <hr style="color:#ffcc00;background-color:#ffcc00;text-align:left;border:none;width:100%;height:0.2em;">
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68 </div>
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69 </td>
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70 </tr>
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71 </table>
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72 </div>
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75 <div class='slide'>
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77 <!-- _S9SLIDE_ -->
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78 <h2 id="概要">概要</h2>
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79 <ul>
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80 <li>GearsOSの分散ファイルシステムの設計と実装を行った
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81 <ul>
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82 <li>ファイル構造の設計</li>
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83 <li>APIの定義</li>
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84 <li>遠隔のファイルのアクセスと保存</li>
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85 </ul>
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86 </li>
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87 <li>GearsOS同様の記述単位な構成</li>
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88 <li>自律分散を目指した分散ファイルシステムの設計</li>
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89 <li>OSレベルのTransactionによるアプリ実装</li>
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90 </ul>
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94 </div>
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95
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96 <div class='slide'>
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97 <!-- _S9SLIDE_ -->
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98 <h2 id="gearsos">GearsOS</h2>
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99 <ul>
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100 <li>CodeGear/DataGearという単位で記述されるOS</li>
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101 <li>OSの信頼性の保証と拡張性を目指している</li>
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102 <li>ノーマルレベルとメタレベルを分離して記述できる
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103 <ul>
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104 <li>ユーザーが実装したプログラムをメタレベルから検証する</li>
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105 <li>定理支援証明系やモデル検査が用いられる</li>
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106 </ul>
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107 </li>
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108 </ul>
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111
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112 </div>
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113
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114 <div class='slide'>
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115 <!-- _S9SLIDE_ -->
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116 <h2 id="codegearとdatagear">CodeGearとDataGear</h2>
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117 <ul>
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118 <li>CodeGear
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119 <ul>
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120 <li>実行Codeの単位</li>
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121 <li>入力DataGearと出力DataGearを持つ</li>
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122 <li>goto文(jump命令)を使って遷移する</li>
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123 <li>実行単位は途中で割り込みされない(Atmocity)</li>
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124 </ul>
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125 </li>
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126 <li>DataGear
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127 <ul>
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128 <li>変数にあたり、構造体の型を持つ</li>
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129 <li>ノーマルレベルでは変更されない(関数型プログラミング)</li>
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130 </ul>
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131 </li>
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132 <li>C言語を拡張する形でCbC言語により実装される</li>
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133 </ul>
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134
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135
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136
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137 </div>
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138
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139 <div class='slide'>
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140 <!-- _S9SLIDE_ -->
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141 <h2 id="codegearとdatagear-1">CodeGearとDataGear</h2>
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142 <ul>
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143 <li>InputDataGearを受け取って、CodeGearが処理し、OutputDataGearを出力する</li>
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144 <li>OutputDataGearは次のCodeGearのInputDataGearとなる</li>
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145 </ul>
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146 <div style="text-align: center;">
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147 　<img src="images/cg-dg.pdf" alt="cgdgの関係図" width="600" />
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148 </div>
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149
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150
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151
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152 </div>
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153
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154 <div class='slide'>
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155 <!-- _S9SLIDE_ -->
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156 <h2 id="gearsosにおけるファイル">GearsOSにおけるファイル</h2>
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157 <ul>
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158 <li>ファイルデータの最小単位はDataGearとなる
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159 <ul>
33
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160 <li>任意の構造体で構成できる</li>
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161 </ul>
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162 </li>
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163 <li>ファイルデータとなるDataGearはQueueに格納される</li>
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164 </ul>
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165 <div style="text-align: center;">
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166 　<img src="images/QueueElement.pdf" alt="Queue" width="800" />
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167 </div>
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168
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169
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170
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171 </div>
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172
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173 <div class='slide'>
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174 <!-- _S9SLIDE_ -->
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175 <h2 id="gearsosにおけるファイル-1">GearsOSにおけるファイル</h2>
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176 <ul>
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177 <li>ファイルは複数のQueueを持つ赤黒木である
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178 <ul>
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179 <li>Queueはkeyでアクセスされる</li>
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180 <li>Queueはstreamの役割を持つ</li>
31
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181 </ul>
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182 </li>
33
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183 </ul>
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184
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185 <div style="text-align: center;">
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186 　<img src="images/newGearsFile.pdf" alt="Queue" width="400" />
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187 </div>
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188
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189
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190
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191 </div>
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192
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193 <div class='slide'>
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194 <!-- _S9SLIDE_ -->
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195 <h2 id="gearsosの分散ファイルシステム">GearsOSの分散ファイルシステム</h2>
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196 <ul>
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197 <li>GearsOSのファイルは通信の役割も持つ</li>
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198 <li>規格が決められたプロトコルを用いない
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199 <ul>
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200 <li>最低限のデータ(DataGear)でのみ通信を行う</li>
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201 <li>分散通信の見通しの確保を目指す</li>
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202 </ul>
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203 </li>
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204 <li>将来的にAPIと通信プロセスは定理支援証明系Agdaで検証を行う</li>
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205 </ul>
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206
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207
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208
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209 </div>
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210
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211 <div class='slide'>
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212 <!-- _S9SLIDE_ -->
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213 <h2 id="transactionalなファイルシステム">Transactionalなファイルシステム</h2>
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214 <ul>
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215 <li>GearsFSはDataGear単位で操作を行う</li>
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216 <li>これによりAPIをTransactionとして実装できる
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217 <ul>
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218 <li>従来ではアプリケーションレベルで実装される</li>
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219 </ul>
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220 </li>
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221 <li>Transactionは様々な分類のアプリケーションに必要となる</li>
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222 <li>GearsOSによるOSレベルのTransactionを用いた開発物の検証を兼ねる</li>
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223 </ul>
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224
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225
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226
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227 </div>
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228
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229 <div class='slide'>
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230 <!-- _S9SLIDE_ -->
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231 <h2 id="ポスターセッション">ポスターセッション</h2>
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232 <ul>
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233 <li>ファイル構造の詳細</li>
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234 <li>ファイルアクセスAPI</li>
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235 <li>proxyを用いたファイル通信の構成解説</li>
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236 <li>研究のまとめと課題</li>
31
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237 </ul>
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238
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239 </div>
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240
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241
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242 </div><!-- presentation -->
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243 </body>
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244 </html>