Zobrazeno 1 - 10
of 10
pro vyhledávání: '"DOHYUN PAK"'
Autor:
Dohyun Pak, Sun-Yong Choi
Publikováno v:
Complexity, Vol 2022 (2022)
We empirically analyze the impact of economic uncertainty due to the COVID-19 pandemic on the trading volume of each sector in the S&P 500 index. Wavelet coherence analysis is carried out using economic policy uncertainty data and the trading volume
Externí odkaz:
https://doaj.org/article/d061028c586542faa5a5bbb9cfe48acc
Publikováno v:
IEEE Access, Vol 7, Pp 98669-98683 (2019)
Smart contracts on blockchain systems implement business logic and directly handle important assets. Although smart contracts play these critical roles, it is hard for users interacting with the system to understand the real behavior of the deployed
Externí odkaz:
https://doaj.org/article/cf6881f035e448cc8c9641519dc82f14
Publikováno v:
Symmetry, Vol 9, Iss 1, p 12 (2017)
The Crank–Nicolson method can be used to solve the Black–Scholes partial differential equation in one-dimension when both accuracy and stability is of concern. In multi-dimensions, however, discretizing the computational grid with a Crank–Nicol
Externí odkaz:
https://doaj.org/article/e743accce81f4bc3b582847ef5a8114d
Autor:
JongHyup Lee, Dohyun Pak
Publikováno v:
Sensors, Vol 16, Iss 9, p 1380 (2016)
For practical deployment of wireless sensor networks (WSN), WSNs construct clusters, where a sensor node communicates with other nodes in its cluster, and a cluster head support connectivity between the sensor nodes and a sink node. In hybrid WSNs, c
Externí odkaz:
https://doaj.org/article/17efd0ff5da84090904ca9a68998e963
Publikováno v:
Pollution Research. :1-16
Two measures of fine particulate matter, PM2.5 exposure and exceedance are used to analyze convergence patterns of 212 and 108 countries during the period of 2000 to 2014. For exposure, sigma index diverges at the annual rate of +1.07%, while gamma i
Publikováno v:
IEEE Access, Vol 7, Pp 98669-98683 (2019)
Smart contracts on blockchain systems implement business logic and directly handle important assets. Although smart contracts play these critical roles, it is hard for users interacting with the system to understand the real behavior of the deployed
Autor:
Sarah M. Ryan, Dohyun Pak
Uncertain demand combined with a positive lead time for adding capacity creates the risk of capacity shortage during the lead time. Accurate shortage estimation is very important to determine a capacity expansion policy. In this paper, we investigate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4dad45441a278704caa29d8f52c4eb5
https://doi.org/10.31274/rtd-20210128-84
https://doi.org/10.31274/rtd-20210128-84
Autor:
Dohyun Pak, Jonghyup Lee
Publikováno v:
Journal of the Korea Institute of Information Security and Cryptology. 25:1449-1453
Constrained IoT devices cannot achieve full coverage of software attestation even though the integrity of software is critical. The limited modification attacks on control flow of software aim at the shadow area uncovered in software attestation proc
Publikováno v:
Symmetry; Volume 9; Issue 1; Pages: 12
Symmetry, Vol 9, Iss 1, p 12 (2017)
Symmetry, Vol 9, Iss 1, p 12 (2017)
The Crank–Nicolson method can be used to solve the Black–Scholes partial differential equation in one-dimension when both accuracy and stability is of concern. In multi-dimensions, however, discretizing the computational grid with a Crank–Nicol
Publikováno v:
The Engineering Economist. 49:95-118
We formulate a model of capacity expansion that is relevant to a service provider for whom the cost of capacity shortages would be considerable but difficult to quantify exactly. Due to demand uncertainty and a lead time for adding capacity, not all