Ji Hwan Cha

61 papers Journal 61
YearRankTypeTitle / Venue / Authors
2026 J jnl
New continuous bivariate distributions developed based on general shock models.
J. Comput. Appl. Math.
Hyunju Lee, Francisco Germán Badía, Ji Hwan Cha
2025 J jnl
Development of a new general class of bivariate distributions based on reversed hazard rate order.
Comput. Stat. Data Anal.
Na Young Yoo, Hyunju Lee, Ji Hwan Cha
2025 J jnl
Is our mission profitable: The cost-effectiveness curve with a possibility of a mission abort.
Reliab. Eng. Syst. Saf.
Maxim Finkelstein, Ji Hwan Cha
2024 J jnl
Preservation of the log concavity by Bernstein operator with an application to ageing properties of a coherent system.
J. Comput. Appl. Math.
Francisco Germán Badía, Ji Hwan Cha, H. Lee, Carmen Sangüesa
2024 J jnl
Preventive maintenance for the constrained multi-attempt minimal repair.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2023 J jnl
Improving classical optimal age-replacement policies for degrading items.
Reliab. Eng. Syst. Saf.
Maxim Finkelstein, Ji Hwan Cha, Amy Langston
2023 J jnl
Optimal preventive maintenance strategy for populations of systems that generate outputs.
Reliab. Eng. Syst. Saf.
Maxim Finkelstein, Ji Hwan Cha, Tim Bedford
2022 J jnl
Optimal preventive switching of components in degrading systems.
Reliab. Eng. Syst. Saf.
Maxim Finkelstein, Ji Hwan Cha, Amy Langston
2021 J jnl
Optimal warranty policy with inspection for heterogeneous, stochastically degrading items.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin
2020 J jnl
On a new age-replacement policy for items with observed stochastic degradation.
Qual. Reliab. Eng. Int.
Maxim Finkelstein, Ji Hwan Cha, Gregory Levitin
2019 J jnl
Stochastic modeling for systems with delayed failures.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2018 J jnl
Bivariate preventive maintenance of systems with lifetimes dependent on a random shock process.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin
2018 J jnl
On optimal operational sequence of components in a warm standby system.
J. Appl. Probab.
Maxim Finkelstein, Nil Kamal Hazra, Ji Hwan Cha
2018 J jnl
On optimal replacement of systems with failure rates described by a random jump process.
Qual. Reliab. Eng. Int.
Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin
2018 J jnl
On preventive maintenance under different assumptions on the failure/repair processes.
Qual. Reliab. Eng. Int.
Ji Hwan Cha, Maxim Finkelstein
2018 J jnl
Optimal mission abort policy for partially repairable heterogeneous systems.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin
2018 J jnl
Optimal replacement policy under a general failure and repair model: Minimal versus worse than old repair.
Reliab. Eng. Syst. Saf.
Francisco Germán Badía, María Dolores Berrade, Ji Hwan Cha, Hyunju Lee
2018 J jnl
Stochastic comparisons and multivariate dependence for the epoch times of trend renewal processes.
J. Multivar. Anal.
Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha
2018 J jnl
Univariate and multivariate stochastic comparisons and ageing properties of the generalized Pólya process.
J. Appl. Probab.
Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha
2017 J jnl
Modeling Discrete Bivariate Data with Applications to Failure and Count Data.
Qual. Reliab. Eng. Int.
Hyunju Lee, Ji Hwan Cha, Gianpaolo Pulcini
2017 J jnl
On optimal grouping and stochastic comparisons for heterogeneous items.
J. Multivar. Anal.
Nil Kamal Hazra, Maxim Finkelstein, Ji Hwan Cha
2017 J jnl
On preventive maintenance of systems with lifetimes dependent on a random shock process.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin
2016 J jnl
A Dependent Competing Risks Model for Technological Units Subject to Degradation Phenomena and Catastrophic Failures.
Qual. Reliab. Eng. Int.
Ji Hwan Cha, Gianpaolo Pulcini
2016 J jnl
Maintenance Policy for a System With Stochastically Dependent Failure Modes With Shock-Accumulation Effect.
IEEE Trans. Reliab.
Ji Hwan Cha, Carmen Sangüesa, Inmaculada Torres Castro
2016 J jnl
New shock models based on the generalized Polya process.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein
2016 J jnl
New stochastic models for preventive maintenance and maintenance optimization.
Eur. J. Oper. Res.
Hyunju Lee, Ji Hwan Cha
2016 J jnl
On Ageing Concepts for Repairable Items From Heterogeneous Populations.
IEEE Trans. Reliab.
Ji Hwan Cha, Maxim Finkelstein
2016 J jnl
On information-based warranty policy for repairable products from heterogeneous population.
Eur. J. Oper. Res.
Hyunju Lee, Ji Hwan Cha, Maxim Finkelstein
2016 J jnl
On some properties of shock processes in a 'natural' scale.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2016 J jnl
Optimal Long-Run Imperfect Maintenance With Asymptotic Virtual Age.
IEEE Trans. Reliab.
Ji Hwan Cha, Maxim Finkelstein
2016 J jnl
Optimal Replacement of Heterogeneous Items With Minimal Repairs.
IEEE Trans. Reliab.
Ji Hwan Cha
2016 J jnl
Optimal burn-in procedure for mixed populations based on the device degradation process history.
Eur. J. Oper. Res.
Ji Hwan Cha, Gianpaolo Pulcini
2016 J jnl
Point process approach to modeling and analysis of general cascading failure models.
J. Appl. Probab.
Hyunju Lee, Ji Hwan Cha
2015 J jnl
A Stochastic Failure Model with Dependent Competing Risks and its Applications to Condition-Based Maintenance.
J. Appl. Probab.
Ji Hwan Cha, Inma T. Castro
2015 J jnl
Construction of two new general classes of bivariate distributions based on stochastic orders.
J. Multivar. Anal.
Hyunju Lee, Ji Hwan Cha
2015 J jnl
Environmental stress screening modelling, analysis and optimization.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2014 J jnl
On construction of general classes of bivariate distributions.
J. Multivar. Anal.
Hyunju Lee, Ji Hwan Cha
2014 J jnl
On some conditional characteristics of hazard rate processes induced by external shocks.
Oper. Res. Lett.
Ji Hwan Cha, Maxim Finkelstein
2014 J jnl
Some notes on unobserved parameters (frailties) in reliability modeling.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2014 J jnl
Stochastic Modeling for Environmental Stress Screening.
J. Appl. Probab.
Ji Hwan Cha, Maxim Finkelstein
2014 J jnl
Stochastic comparison of multivariate conditionally dependent mixtures.
J. Multivar. Anal.
Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha
2014 J jnl
Survival of systems with protection subject to two types of external attacks.
Ann. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein, Francois Marais
2013 J jnl
On Stochastic Predictions of Failure Processes Under Population Heterogeneity.
J. Appl. Probab.
Ji Hwan Cha
2013 J jnl
On history-dependent shock models.
Oper. Res. Lett.
Ji Hwan Cha, Maxim Finkelstein
2013 J jnl
Results for Burn-in of Systems Under External Shocks.
IEEE Trans. Reliab.
Ji Hwan Cha, Maxim Finkelstein
2013 J jnl
The failure rate dynamics in heterogeneous populations.
Reliab. Eng. Syst. Saf.
Ji Hwan Cha, Maxim Finkelstein
2012 J jnl
A Note on the Failure Rates in Finite Mixed Populations.
J. Appl. Probab.
Ji Hwan Cha, Massimiliano Giorgio
2012 J jnl
Stochastic analysis of preventive maintenance in heterogeneous populations.
Oper. Res. Lett.
Ji Hwan Cha, Maxim Finkelstein
2011 J jnl
Burn-in and the performance quality measures in heterogeneous populations.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein
2011 J jnl
Burn-in for Systems Operating in a Shock Environment.
IEEE Trans. Reliab.
Ji Hwan Cha, Maxim Finkelstein
2011 J jnl
Comparison of combined stochastic risk processes and its applications.
Eur. J. Oper. Res.
Ji Hwan Cha
2010 J jnl
An extended stochastic failure model for a system subject to random shocks.
Oper. Res. Lett.
Ji Hwan Cha, Eui Yong Lee
2010 J jnl
Burn-in by environmental shocks for two ordered subpopulations.
Eur. J. Oper. Res.
Ji Hwan Cha, Maxim Finkelstein
2010 J jnl
Optimal design of a general warm standby system.
Reliab. Eng. Syst. Saf.
Won Young Yun, Ji Hwan Cha
2010 J jnl
Stochastically Ordered Subpopulations and Optimal Burn-In Procedure.
IEEE Trans. Reliab.
Ji Hwan Cha, Maxim Finkelstein
2008 J jnl
A Bayesian Change-Point Analysis for Software Reliability Models.
Commun. Stat. Simul. Comput.
Seungmin Nam, Ji Hwan Cha, Sinsup Cho
2008 J jnl
Optimal Burn-in for Minimizing Total Warranty Cost.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ji Hwan Cha, Hisashi Yamamoto, Won Young Yun
2006 J jnl
An extended model for optimal burn-in procedures.
IEEE Trans. Reliab.
Ji Hwan Cha
2006 J jnl
Optimal Workload for a Multi-Tasking
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Ji Hwan Cha, Hisashi Yamamoto, Won Young Yun
2006 J jnl
Sequential Confidence Interval Estimation for System Availability.
Qual. Reliab. Eng. Int.
Ji Hwan Cha, Sangyeol Lee, Jongwoo Jeon
2005 J jnl
On optimal burn-in procedures - a generalized model.
IEEE Trans. Reliab.
Ji Hwan Cha