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<div><div> <p>2019年1月3日，嫦娥四號(hào)成功登陸月球表面，傳回世界第一張近距離拍攝月背影像圖；2019年1月4日，天津大學(xué)管理與經(jīng)濟(jì)學(xué)部2018年度經(jīng)管榜樣頒獎(jiǎng)典禮成功舉行。2019，經(jīng)管追夢(mèng)人依舊前行！來(lái)看看下一周都有哪些令人期待的精彩活動(dòng)吧！</p> <p>學(xué)術(shù)活動(dòng)</p> <p><span><strong><span>1.</span></strong></span></p> <p>活動(dòng)時(shí)間：2019年1月9日（周三）9:30-11:30</p> <p><span><strong><span>2.</span></strong></span></p> <p>活動(dòng)地點(diǎn)：天津大學(xué)第25教學(xué)樓C412</p> <p><span><strong><span>3.</span></strong></span></p> <p>活動(dòng)主題：APP的溢出效應(yīng)測(cè)量：基于因果圖算法 How Mega is the Mega?<span>Measuring the Spillover Effects of WeChat by Machine Learning and Econometrics</span></p> <p><span><strong><span>4.</span></strong></span></p> <p>活動(dòng)內(nèi)容：</p> <p>WeChat, an instant messaging APP, is considered a mega APP due to its dominance in terms of use among Chinese smartphone users. Little is known, however, about its externality in the broaderAPPmarket. This work estimates the spillover effects of WeChat on the other Top-50 most frequently used APPs in China, using users’ weeklyAPPusage data. Given the challenge of determining causal inference from observational data, we apply a graphical model and an econometric method to estimate the spillover effects in two steps: (1) we determine the causal structure by estimating a partially ancestral diagram, using a Fast Causal Inference (FCI) algorithm; and (2) given the causal structure, we find a valid adjustment set and estimate the causal effects by an econometric model with the adjustment set for controlling non-causal effects. Our findings show that the spillover effects of WeChat are limited; in fact, only two otherAPPs, Tencent News and Taobao, receive positive spillover effects from WeChat. In addition, we show that, if researchers fail to account for the causal structure that is determined from the graphical model, it is easy to fall into the trap of confounding bias and selection bias when estimating causal effects. The findings generate managerial implications in terms ofAPPusage patterns, strategic management of megaAPPs on anAPPplatform, andAPPpromotional strategies forAPPplatform managers andAPPdevelopers.</p> <p><span><strong><span>5.</span></strong></span></p> <p>主講人介紹:</p> <img src="/uploads/image/2019/20190107/3c4ada937b6c1a6a48c2f30ca375c846.jpg"><p>竇一凡</p> <p>復(fù)旦大學(xué)管理學(xué)院信息管理與信息系統(tǒng)系副教授。2007年畢業(yè)于清華大學(xué)經(jīng)管學(xué)院，獲管理學(xué)學(xué)士學(xué)位；2012年畢業(yè)于清華大學(xué)經(jīng)管學(xué)院管理科學(xué)工程專(zhuān)業(yè)，獲管理學(xué)博士學(xué)位。竇一凡的主要研究興趣是與信息產(chǎn)品相關(guān)的經(jīng)濟(jì)學(xué)問(wèn)題，如信息產(chǎn)品的定價(jià)策略、平臺(tái)模式的定價(jià)和協(xié)調(diào)問(wèn)題等。竇一凡的研究工作先后發(fā)表</p> <p>校友活動(dòng)</p> <p><span><strong><span>1.</span></strong></span></p> <p>活動(dòng)時(shí)間：2019年1月12日（周六）15:00-21:00</p> <p><span><strong><span>2.</span></strong></span></p> <p>活動(dòng)地點(diǎn)：深圳市南山區(qū)高北十六創(chuàng)意園里空間</p> <p><span><strong><span>3.</span></strong></span></p> <p>活動(dòng)主題：天津大學(xué)深圳EMBA同學(xué)會(huì)2019年年會(huì)</p> <p><span><strong><span>4.</span></strong></span></p> <p>活動(dòng)內(nèi)容：</p> <p>此次活動(dòng)由天津大學(xué)深圳EMBA同學(xué)會(huì)主辦，因大部分深圳EMBA校友沒(méi)有參加過(guò)學(xué)位授予儀式，EMBA深圳同學(xué)會(huì)特申請(qǐng)于2019年年會(huì)期間在深圳舉行一次EMBA學(xué)位授予儀式，有60余院校友參加本次學(xué)位授予儀式。</p> <img src="/uploads/image/2019/20190107/e0e57e4c7efa13f28af2551a96f39702.jpg"><p>素材整理 / 蔡幼馨</p> <p>圖文編輯 / 蔡幼馨</p> <img src="/uploads/image/2019/20190107/16d31b9767aa1df19f12e81e6d833e00.jpg"> </div></div>