學術論文
研究焦點
全球學者
知識轉移
明德商論
龍虎山下
媒體報導
Cronies in the Courtroom: Political Interference and Judicial Reforms
Cronies in the Courtroom: Political Interference and Judicial Reforms
Utilizing 1.54 million judicial judgments from enterprise-to-enterprise litigation between 2014 and 2019 in China, we provide evidence of municipal leaders exerting influence over the courts to favor enterprises connected to them. By leveraging variations in enterprise connections resulting from official turnover, we show that enterprises with connections to party leaders have higher chances of winning in business litigation than unconnected enterprises. We also examine the impact of the staggered roll-out of circuit courts, a top-down institutional reform, on cronyism in the courtroom. Our findings show that this reform has effectively reduced the judicial advantage enjoyed by connected enterprises by two-thirds. By contrast, the trial live-broadcasting reform increases visibility but is not associated with a reduction in the effect of political connections, suggesting that different forms of judicial bias require different monitoring approaches.

Preferential Credit Policy with Sectoral Markup Heterogeneity
Preferential Credit Policy with Sectoral Markup Heterogeneity
Many emerging economies employ preferential credit policies that target selected sectors. This paper quantifies the implications of such policies for aggregate productivity and welfare. Using Chinese firm-level data from 2009–2020, we first document that sectors with higher markups receive larger credit subsidies and exhibit higher revenue-based productivity. Motivated by these facts, we develop a multi-sector quantitative model with endogenously determined markups and calibrate it to match the distribution of sales both within and across sectors. We find that preferential credit subsidies raise aggregate productivity and welfare by reallocating market shares toward high-markup sectors. These gains persist in an extended framework with endogenous firm entry.

The Determinants of ESG Ratings: Rater Ownership Matters
The Determinants of ESG Ratings: Rater Ownership Matters
We examine whether and how common ownership affects Environmental, Social, and Governance (ESG) ratings—an important research question given the increasing use of these ratings in investment decisions and corporate evaluations. We find that companies with major shareholders in common with the rating agency (“sister firms”) tend to receive higher ESG ratings. When a company becomes a sister firm through a change in the rating agency's ownership structure, its rating from that agency is subsequently upgraded, whereas its ESG ratings from other agencies remain unchanged. Sister firms exhibit greater rating disagreements across agencies than other firms. The higher ESG ratings for sister firms are partly attributable to the transfer of immaterial positive ESG information through common owners. The common ownership effect is more pronounced when the owner can exert a greater influence on the rating agency. Moreover, sister firms with initially elevated ratings demonstrate poorer future ESG performance. Overall, our findings suggest that owners can affect ESG ratings of their portfolio companies in a way consistent with their influence and interest.

Corporate Lobbying of Bureaucrats
Corporate Lobbying of Bureaucrats
Executive agencies play a pivotal role in shaping the regulatory environment by crafting rules, enforcing regulations, and overseeing government contracts—all of which can have a profound impact on businesses. For firms, this potential impact creates a clear incentive for firms to influence these agencies, particularly during the critical stages of rulemaking and enforcement. In this context, lobbying emerges as a key tool that companies use to mold the regulatory landscape to their advantage. Unlike politicians, whose decisions are often swayed by electoral cycles and campaign contributions, agency officials are not elected, serve longer terms, and are less susceptible to direct political pressures. As a result, engaging in lobbying efforts with executive agencies is both more complicated and strategically crucial for firms operating within heavily regulated industries. However, the dynamics of such lobbying remain underexplored in the literature.
春節幸福感和疫情感知風險調查:來自機器學習的洞察
春節幸福感和疫情感知風險調查:來自機器學習的洞察
2023年剛結束的兔年春節內地民眾過得怎樣?調查顯示,兔年春節期間,民眾的幸福感平均值為5.47,介於“比較開心”與“開心”之間(1為最低值,7為最高值),“比較開心”以上人群占比為83.1%。
How to Recover from Work Stress, According to Science
How to Recover from Work Stress, According to Science
To combat stress and burnout, employers are increasingly offering benefits like virtual mental health support, spontaneous days or even weeks off, meeting-free days, and flexible work scheduling. Despite these efforts and the increasing number of employees buying into the importance of wellness, the effort is lost if you don’t actually recover. So, if you feel like you’re burning out, what works when it comes to recovering from stress? The authors discuss the “recovery paradox” — that when our bodies and minds need to recover and reset the most, we’re the least likely and able to do something about it — and present five research-backed strategies for recovering from stress at work.

研究企業之間的協調行為 – 郝宇博士
研究企業之間的協調行為 – 郝宇博士
計算機編程聽起來好像和經濟風馬牛不相及,但擁有出色的編程技術,不但能幫助個人進行經濟學學術研究,更能助你在商界捉緊更多就業機會。

疫況愈下 「清零」何價?
疫況愈下 「清零」何價?
香港在連續數月「清零」後,在社區出現Omicron變種病毒個案,爆發第五波疫情,特區政府因而重新推出表列處所須關閉等社交距離防疫措施,並取消多項大型活動。
構想虛擬貨幣的未來 – 游楊博士
構想虛擬貨幣的未來 – 游楊博士
作為教師,在鼓勵同學努力學習之餘,我亦會主動了解本地市場運作以及邀請僱主來到課堂分享業界經驗。

等待時間公告,是緩解擁堵的解藥,還是加劇混亂的推手?
等待時間公告,是緩解擁堵的解藥,還是加劇混亂的推手?
每年冬季流感高峰,香港公立急症室輪候時間動輒突破4小時,部分區域甚至超過8小時。 香港醫管局近年力推智慧醫院舉措,將全港18間急症室輪候時間推送至市民指尖,期望通過資訊透明實現患者「自我分流」,優化資源配置。
購物智能體,正在改寫移動互聯網的權力結構
購物智能體,正在改寫移動互聯網的權力結構
2025下半年,「AI幫人購物」從概念走向現實,逐步介入搜尋、比價、下單等環節。當AI智能體讓平台在用戶面前「隱身」,用戶不再意識到自己從哪個應用完成購買,平台的品牌價值、用戶黏性,乃至對數據的掌控,都將遭受重創。 當前AI競賽中,一場入口爭奪戰正悄然上演。
AI時代的一人公司:機會、內卷與護城河
AI時代的一人公司:機會、內卷與護城河
2025年,被業界稱為「Agent元年」。 AI正在從輔助工具變成能自主決策的「虛擬合夥人」:過去需要團隊協作完成的代碼開發、設計、文案等工作,現在可以由創始人編排一組AI Agent來完成。 與此同時,另一組數據同樣醒目:「結構性替代」正在發生,當下企業在逐步調整人力模型:用AI做更多事、用更少的人完成標準化流程。
當關稅壁壘鬧上法庭——一堂千億美元的憲法課
當關稅壁壘鬧上法庭——一堂千億美元的憲法課
本年2月20日,美國最高法院以六比三的裁決,在Learning Resources, Inc. v. Trump一案中作出里程碑式的判決:總統無權依據《國際緊急經濟權力法》(International Emergency Economic Powers Act;簡稱IEEPA)單方面徵收關稅。
尋找「負責任的阿爾法」:平衡生成式AI與金融監管之道
尋找「負責任的阿爾法」:平衡生成式AI與金融監管之道
如果未來中環多家基金的智能體(AI agent),能在同一秒內讀完中央銀行聲明、業績電話會議紀錄與全球新聞,並據此作出方向相近的交易判斷,市場究竟會變得更有效率,還是更脆弱?這已不是科幻想像,而是正迅速逼近金融業的現實。
對等關稅一周年  製造仍弱貿赤升
對等關稅一周年  製造仍弱貿赤升
特朗普對等關稅實施一年,美國商品貿易逆差不跌反升,製造業就業人數持續下滑,關稅收入亦遠不足以填補財赤。港大經管學院陸炎輝教授剖析關稅政策的多重矛盾與局限。
以 「超級增值人」 定位 聯動灣區科創落地全球
以 「超級增值人」 定位 聯動灣區科創落地全球
港大經管學院創新與創業研究中心副主任陳炳雄教授日前接受《香港商報》專訪,分享對大灣區創新生態的觀察。陳教授指出,香港擁有世界頂尖的大學和基礎研究能力,但長期存在「重研發、輕轉化」的瓶頸。

等待時間公告,是緩解擁堵的解藥,還是加劇混亂的推手?
等待時間公告,是緩解擁堵的解藥,還是加劇混亂的推手?
每年冬季流感高峰,香港公立急症室輪候時間動輒突破4小時,部分區域甚至超過8小時。 香港醫管局近年力推智慧醫院舉措,將全港18間急症室輪候時間推送至市民指尖,期望通過資訊透明實現患者「自我分流」,優化資源配置。
當關稅壁壘鬧上法庭——一堂千億美元的憲法課
當關稅壁壘鬧上法庭——一堂千億美元的憲法課
本年2月20日,美國最高法院以六比三的裁決,在Learning Resources, Inc. v. Trump一案中作出里程碑式的判決:總統無權依據《國際緊急經濟權力法》(International Emergency Economic Powers Act;簡稱IEEPA)單方面徵收關稅。