Qingmin Liu

ORCID: 0009-0007-8263-1250
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About
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Research Areas
  • Auction Theory and Applications
  • Game Theory and Applications
  • Experimental Behavioral Economics Studies
  • Advancements in Semiconductor Devices and Circuit Design
  • Game Theory and Voting Systems
  • Economic theories and models
  • Semiconductor materials and devices
  • Obesity, Physical Activity, Diet
  • Semiconductor Quantum Structures and Devices
  • Cardiovascular Health and Risk Factors
  • Global Cancer Incidence and Screening
  • Advanced Fiber Optic Sensors
  • Physical Activity and Health
  • Physics of Superconductivity and Magnetism
  • Semiconductor Lasers and Optical Devices
  • Consumer Market Behavior and Pricing
  • Capital Investment and Risk Analysis
  • Nutritional Studies and Diet
  • Plasmonic and Surface Plasmon Research
  • Thyroid Cancer Diagnosis and Treatment
  • Photonic and Optical Devices
  • School Health and Nursing Education
  • Bayesian Modeling and Causal Inference
  • Image Enhancement Techniques
  • Image and Signal Denoising Methods

Henan Institute of Science and Technology
2023-2025

Lanzhou University of Technology
2022-2024

Zhongkai University of Agriculture and Engineering
2024

Wenzhou University of Technology
2024

Columbia University
2012-2023

Shanghai Jiao Tong University
2019-2022

Hangzhou Center for Disease Control and Prevention
2011-2021

Linyi People's Hospital
2015-2021

Huazhong University of Science and Technology
2021

Second Affiliated Hospital of Xi'an Jiaotong University
2019

10.1109/tcsvt.2025.3545595 article EN IEEE Transactions on Circuits and Systems for Video Technology 2025-01-01

This paper studies a model of long-term contracting for experimentation. We consider principal–agent relationship with adverse selection on the agent's ability, dynamic moral hazard, and private learning about project quality. find that each these elements plays an essential role in structuring incentives, it is only their interaction generally precludes efficiency. Our permits explicit characterization optimal contracts.

10.1093/restud/rdw013 article EN The Review of Economic Studies 2016-03-21

Record high on-current of 78 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$\mu\hbox{A}/\mu\hbox{m}$</tex></formula> in a tunnel field-effect transistor (TFET) is achieved at 0.5 V room temperature. The TFET employs staggered AlGaSb/InAs heterojunction with the tunneling direction oriented in-line gate field. measured results are consistent numerical simulation device structure. Simulations...

10.1109/led.2011.2179915 article EN IEEE Electron Device Letters 2012-01-26

We study contests for innovation with learning about the innovation's feasibility and opponents' outcomes. characterize that maximize when designer chooses a prize-sharing scheme disclosure policy. A "public winner-takes-all" contest dominates public contests—where any success is immediately disclosed—with other as well winner-takes-all Yet, jointly modifying prize sharing can increase innovation. In broad class of mechanisms, it optimal to share following certain number successes; under...

10.1086/693040 article EN Journal of Political Economy 2017-05-26

The current-voltage characteristics of AlGaSb/InAs staggered-gap n-channel tunnel field-effect transistors are simulated in a geometry which the gate electric field is oriented to be same direction as junction internal field. It shown that this can also support low-voltage operation and low subthreshold swing. In absence simple analytic theory for transistor allow direct comparisons, two-dimensional numerical simulations used explore electrostatic geometrical design considerations including...

10.1109/led.2012.2186554 article EN IEEE Electron Device Letters 2012-02-22

We formulate a notion of stable outcomes in matching problems with one-sided asymmetric information.The key conceptual problem is to blocking pair that takes account the inferences uninformed agent might make.We show set nonempty incomplete-information environments, and superset complete-information outcomes.We then provide sufficient conditions for matchings be efficient.Lastly, we define price-sustainable allocations subset such allocations.

10.3982/ecta11183 article EN Econometrica 2014-01-01

Neighborhood built environment may influence residents' physical activity, which in turn, affects their health. This study aimed to determine the associations between perceived and leisure-time activity Hangzhou, China.1440 participants aged 25-59 were randomly selected from 30 neighborhoods three types of administrative planning units Hangzhou. International Physical Activity Questionnaire long form NEWS-A used obtain individual-level data. The China Urban Built Environment Scan Tool was...

10.1016/j.ypmed.2014.06.001 article EN cc-by-nc-nd Preventive Medicine 2014-06-11

Abstract Innovation is typically a trial-and-error process. While some research paths lead to the innovation sought, others result in dead ends. Because firms benefit from their competitors working wrong direction, they do not reveal dead-end findings. Time and resources are wasted on projects that other have already found be fruitless. We offer simple model with two lines study this prevalent problem. characterize equilibrium decentralized environment necessarily entails significant...

10.1111/jeea.12153 article EN Journal of the European Economic Association 2015-10-31

10.1109/tcsvt.2024.3412748 article EN IEEE Transactions on Circuits and Systems for Video Technology 2024-01-01

Vertical n-channel tunnel field-effect transistors (TFETs) with tunneling normal to the gate based on an n+ In <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞=0.53-&gt;;1</sub> GaAs/p <sup xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> InP heterojunction have been demonstrated exhibit simultaneously a high I xmlns:xlink="http://www.w3.org/1999/xlink">ON</sub> /I xmlns:xlink="http://www.w3.org/1999/xlink">OFF</sub> ratio of 6 × 10...

10.1109/led.2012.2189546 article EN IEEE Electron Device Letters 2012-04-04

10.1016/j.jet.2013.12.014 article EN Journal of Economic Theory 2014-01-04

Vertical n-channel tunnel field-effect transistors (FETs) based on compound semiconductors, in a new geometry with tunneling normal to the gate, are demonstrated for first time using an n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> In <sub xmlns:xlink="http://www.w3.org/1999/xlink">0.53</sub> Ga xmlns:xlink="http://www.w3.org/1999/xlink">0.47</sub> As/n /n ,=0.53- >;1 GaAs/p InP heterojunction. At 300 K, TFETs show on-current of ~20...

10.1109/led.2011.2164232 article EN IEEE Electron Device Letters 2011-09-22

Efficiency and symmetric treatment of agents are the primary goals resource allocation in environments without transfers. Focusing on ordinal mecha- nisms which no small group can substantially change allocations others, we show that all asymptotically efficient, symmetric, strategy-proof mechanisms lead to same large markets. In particular, many — both well-known newly developed allocationally equivalent. This equivalence is consistent with prior empirical findings different similar school...

10.2139/ssrn.1872713 article EN SSRN Electronic Journal 2011-01-01

The purpose of this study was to evaluate health-related quality life (HRQoL) community thyroid cancer survivors in Hangzhou, China, and explore the important correlates defining HRQoL.All patients who met criteria 183 communities were invited participate (N = 1551). A self-administered questionnaire including collection personal information HRQoL instruments completed by each participant (n 970), with a response rate 62.5%. assessed using Short Form 36 Health Survey European Organization...

10.1089/thy.2017.0213 article EN Thyroid 2018-05-29

Abstract Background To plan long-term prevention strategies and develop tailored intervention activities, it is important to understand the socio-demographic characteristics of subpopulations at high risk developing chronic diseases. This study aimed examine associated with multiple lifestyle factors their clustering. Methods We conducted a simple random sampling survey assess in three districts Hangzhou, China between 2008 2009. A two-step cluster analysis was used identify different...

10.1186/1479-5868-8-40 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2011-05-15

We study the role of incomplete information and outside options in determining bargaining postures surplus division repeated between a long-run player sequence short-run players.The option is not only disagreement point but reveals privately held by player.In equilibrium, uninformed players' offers do always respond to changes reputation informed player's payoffs are discontinuous.The invokes inefficient random repeatedly order build level where subsequent players succumb his extraction...

10.3982/ecta9200 article EN Econometrica 2013-01-01

Family influence plays an important role in a child's physical activity (PA). This study aimed to describe the level of moderate vigorous intensity (MVPA) and sedentary behaviours among Chinese junior high school students examine associations between different types family MVPA or behaviours.Participants two independent cross-sectional surveys, conducted 2009 2011, were Grade 7 9 from all schools Hangzhou, China. The daily duration frequency MVPA, amount time support self-reported....

10.1186/s12889-015-1593-9 article EN cc-by BMC Public Health 2015-03-24

We study the role of limited commitment in a standard auction environment. In each period, seller can commit to an with reserve price but not future prices. characterize set equilibrium profits attainable for as period length vanishes. An immediate sale by efficient is optimal when there are at least three buyers. For many natural distributions two buyers enough. Otherwise, we give conditions under which maximal profit attained through continuously declining (JEL D44, D82)

10.1257/aer.20170882 article EN American Economic Review 2019-02-28

Abstract The first fabrication of a III‐V tunnel field‐effect transistor (TFET) with tunneling directed perpendicular to the gate is reported. This new geometry utilizes an InAs/Al 0.45 Ga 0.55 Sb staggered‐gap junction intended for high on current and steep subthreshold swing. measurements transport properties at room temperature ‐50 °C are provided. Tunneling confirmed by observation negative differential resistance in forward bias polarity. Transistor on‐current 21 μA/μm 0.3 V swing 830...

10.1002/pssc.201100241 article EN Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics 2011-11-02

We study the role that price transparency plays in determining efficiency and surplus division a sequential bargaining model of formation with asymmetric information. Under natural assumptions on type distributions for any discount factor, we show unobservability past negotiations leads to lower prices faster trading. Unobservability, therefore, enhances "Coasian effect" by fostering diverting more player who possesses private In addition, equilibrium is unique pure strategies nontransparent...

10.3982/te1566 article EN cc-by-nc Theoretical Economics 2015-05-01

We propose a criterion of stability for two-sided markets with asymmetric information. A central idea is to formulate off-path beliefs conditional on counterfactual pairwise deviations and on-path in the absence such deviations. matching-belief configuration stable if matching individually rational respect system not blocked beliefs. The formulation provides language assessing outcomes their supporting opens door further belief-based refinements. main refinement analyzed paper requires...

10.1257/aer.20181186 article EN American Economic Review 2020-07-28

A physics-based model is shown to yield the small-signal equivalent circuit of resonant tunneling diode (RTD) including an analytic expression for both quantum inductance and capacitance. This unifies previous models by Brown et al. Lake Yang capacitance, extends RTD SPICE Broekaert. The has been fit current-voltage microwave S-parameter measurements AlAs-InGaAs-InAs-InGaAs-AlAs RTDs from 45 MHz 30 GHz over biases 0 0.81 V. Good agreement between measurement shown.

10.1109/ted.2004.825795 article EN IEEE Transactions on Electron Devices 2004-05-01
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