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<pre><font size="3">拝啓 時下ますますご清栄のこととお慶び申し上げます。
さて，</font><font size="3"><font size="3">第151回地域科学ワークショップ</font>を，下記の通り開催する運びとなりまし
たのでご案内申し上げます。ご多忙中とは存じますが，是非ご出席ください。
記
日 時：2017年3月3日（金）16：00～18：00
場 所：東北大学 情報科学研究科新棟412号室
</font><font size="3">報 告 者：潘 麗君</font><span style="font-size:12.0pt;font-family:"ＭＳ ゴシック";
mso-bidi-font-family:"ＭＳ ゴシック";mso-font-kerning:0pt;mso-ansi-language:EN-US;
mso-fareast-language:JA;mso-bidi-language:AR-SA"><span lang="EN-US"> (名古屋</span>大学）</span><b><span style="font-size:12.0pt;font-family:"ＭＳ Ｐゴシック";mso-bidi-font-family:"ＭＳ Ｐゴシック";
mso-font-kerning:0pt"><span lang="EN-US"><o:p></o:p></span></span></b><pre><pre>タ イ ト ル：Is a Big Entrant a Threat to Incumbents?
The Role of Demand Substitutability in Competition among the Big and the Small</pre></pre></pre>
<pre><pre>アブストラクト：
<pre><pre>We establish a model of market competition among big and small firms and
investigate how demand substitutability affects the impacts of big
firms' entry on incumbents. We focus on the relative strength of two
opposing effects of entry on the incumbent big firms' demand: the direct
substitution effect among the big firms (negative), and the indirect
feedback effect through the change in the aggregated behavior of small
firms (positive). If the substitutability between big and small firms is
sufficiently high, the indirect effect dominates the direct effect, and
the big incumbents' equilibrium prices and profits increase. We show
that the welfare effects are ambiguous, which calls for careful
assessment for regulating big firms' entry.
<span style="font-size:12.0pt;font-family:"Times New Roman",serif;
mso-font-kerning:0pt" lang="EN-US"><o:p></o:p></span><pre>〒980-8579 仙台市青葉区荒巻字青葉6-3-09
東北大学大学院情報科学研究科棟（青葉山）
世話人：安藤朝夫、曽道智、河野達仁、伊藤亮、張陽
TEL： 022-795-4503
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:zhang@se.si.tohoku.ac.jp">zhang@se.is.tohoku.ac.jp</a></pre></pre></pre></pre></pre>
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