Yoo-Mi Ko

Abstract Using rapid expansion of the Beijing subway from 2000 to 2018, we analyze its impact on collaborative matches in innovations. We find that an hour reduction in travel time between a pair of locations in Beijing brought 14.85% to 37.69% increase in collaborated patents. Far-apart location pairs were more affected, and the local average causal response is approximately 34.92% to 82.29%. The effect is mainly driven by increased matches among highly productive innovators. The entry of new i

The use of real-time 3D navigation system in the hybrid OR was found to be safe and effective in providing intraoperative guidance for FESS.

While criminal justice reforms aimed at reducing the size of pretrial detainee population are being implemented across the U.S., little is known about their impact on the labour market. Using difference-in-differences approach, we find that the 2017 New Jersey Criminal Justice Reform increased the employment probability among blacks in their prime working age (i.e. 25–54) by 4.2 to 6.8 percentage points; its effect among whites is negligible. Labour force participation, full-time job status, and

Abstract Although legislatures typically use majority rule to allocate a budget in distributive legislation, unanimous consent over the broad allocation of benefits is pervasive. I develop a game‐theoretic model where members strategically interact in a universal coalition to determine allocations, with noncooperative bargaining as a threat point for the breakdown of cooperation. To quantify the effects of political power on the agreed‐upon allocation, I structurally estimate the model using the

Several states and localities have begun to implement various forms of pretrial justice reforms aimed at reducing the size of pretrial detainee population. However, empirical investigation of the effect of such reforms on crimes more broadly (other than recidivism) is limited. We analyse the effect of the 2017 New Jersey Criminal Justice Reform on property crimes. We find that property crime per 100,000 population increased by 22.5% within the first two years. Our findings suggest that reducing

This dissertation consists of two essays which study budgetary allocation and investment decisions for public goods. Chapter 1 investigates theoretically and empirically how a legislature allocates a budget to fund local public projects in an omnibus bill under unanimous agreement. While legislatures typically use majority rule to allocate a given budget in distributive legislation, near-unanimous consent over the broad allocation of benefits is pervasive. This phenomenon is commonly referred to

본 연구의 목적은 생활스트레스가 자기통제력을 통해 학업지연행동에 미치는 영향을 자기자비가 조절하는지 검증하는 것이다. 경상도권의 4년제 대학교에 재학 중인 대학생 440명이 생활스트레스 척도, 학업지연행동 척도, 자기통제력 척도, 자기자비 척도를 포함한 설문조사에 응답하였다. SPSS 25.0를 사용하여 상관관계, 매개효과를 검증하였고, SPSS PROCESS Macro를 사용하여 조절효과와 조절된 매개효과를 검증하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 자기통제력은 생활스트레스와 학업지연행동 간의 관계를 완전매개하는 것으로 나타났다. 둘째, 자기자비는 자기통제력과 학업지연행동 간의 관계를 조절하는 것으로 나타났다. 셋째, 생활스트레스가 자기통제력을 통해서 학업지연행동에 미치는 영향을 자기자비가 조절하는 것으로 나타나 조절된 매개효과가 확인되었다. 이러한 결과는 대학생들이 스트레스 상황에 놓여있을 때 자기통제력을 높여 즉각적인 만족을 지연하고 과제를 수행할 수 있도록