김종환 교수

This paper examines the association between CEO power and firm opacity. We discuss the entrenchment and managerial power theories to develop a coherent hypothesis that captures a negative relationship. To investigate the relationship, we use CEO pay slice (CPS) and opacity index as proxies for CEO power and information environment, respectively. With alternate model specifications, we consistently find that firm opacity is positively associated with CPS. With the findings, we conclude that power

Abstract This paper investigates the effectiveness of founder CEO s on firm innovation. We examine our research question using the number of patent citations as a proxy for firm innovation and a novel dataset of founder CEO s in S&P 1,500 firms over a 15‐year period from 1994 to 2008. Our main results show that a founder CEO is associated with an increase in citations, suggesting that founder CEO s are more effective in stimulating innovation compared to professional CEO s. Overall, these fi

Aerosol scattering coefficients for three different wavelengths (λ= 450, 550, 700 nm) are measured almost continuously by a nephelometer in Seoul for a period of 13 months (February 2007-February 2008), which includes two weeks break in August 2007 for measurements at Daegwallyeong and YoungJongdo. The mean of the daily average scattering coefficients at  λ= 550 nm is 194.1±144.2 Mm-¹ and the minimum and maximum are 14.3 Mm-¹ and 998.1 Mm-¹, respectively. The scattering coefficient shows a gene

We examine whether and how CEOs’ conscientiousness affects managerial learning from stock prices. We use a deep learning-based natural language processing model to detect personality from textual records of an individual’s spoken language. Following personality psychologists’ description of the personality trait of conscientiousness, we hypothesize that conscientious CEOs are more willing and able to collect comprehensive decision-relevant information compared to others, and to the extent that t

In this paper, the inorganic-organic thin film encapsulation layer was newly adopted to protect the organic layer from moisture and oxygen. Using the electron beam, Sputter and Spin-Coater system, the various kinds of inorganic and organic thin-films were deposited onto the Ethylene Terephthalate(PET) and their interface properties between organic and inorganic layer were investigated. In this investigation, the SiON and Polyimide(PI) layer showed the most suitable properties. Under these condit

This research investigates the impact of CEO conscientiousness on asymmetric SG&A (Selling, General, and Administrative) cost behaviour. Utilizing a dataset comprising S&P 1500 companies during the timeframe spanning from 2008 to 2019, our findings demonstrate a negative relationship between CEO conscientiousness and the magnitude of cost stickiness. We affirm the robustness of our primary findings through a change analysis, accounting for CEO overconfidence, and employing entropy balancing tech

Existing studies on interlocal collaboration have focused on whether or not to form collaboration. However, we examine the extent to which local governments collaborate with each other. We measure collaboration by the number of partnering local governments in different partnerships, and test hypotheses on the potential factors affecting the degree of collaboration among local governments from a resource-based view. With a sample of 70 partnerships established for local economic development among

Aerosol number concentration (NCN), size distribution and cloud condensation nuclei (CCN) concentration (NCCN) were measured during 16-21 August 2008 at Daegwallyeong (DG)located in the eastern rural region of the Korean Peninsula. In the very next week (22-29 August 2008) the same aerosol properties were measured at Yeongjong Island (YJ) in the Yellow Sea. NCN for all 3 size cuts (above 3, 6 and 10 nm) was significantly higher at DG than YJ, but NCCN was significantly lower at the former and re

[Purpose]The purpose of this study is to examine the impact of CEO narcissism on asymmetric cost behavior. [Methodology]We utilize data from distributed transcripts of earnings conference calls for each CEO obtained from S&P Capital IQ, focusing on S&P 1500 firms for the period from 2007 to 2018. [Findings]We find that CEO narcissism is positively associated with the degree of cost stickiness, aligning with our hypothesis. To further validate the main finding, we conduct two robustness tests. Th

We have studied the nematic liquid crystal (NLC) alignment effects on a nitrogen-doped diamond-like carbon (NDLC) thin film layer with ion beam irradiation. The pretilt angle for NLC on the NDLC surface with ion beam exposure was observed below 1 degree. Also, we had the good LC alignment characteristics on the NDLC thin films with ion beam exposure of 1800 eV. In thermal stability experiments, the alignment defect of the NLC on the NDLC surface with ion beam irradiation above annealing temperat