Ji Hwan Cha

According to our database, Ji Hwan Cha authored at least 58 papers between 2005 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2024

Preservation of the log concavity by Bernstein operator with an application to ageing properties of a coherent system.

Francisco Germán Badía, Ji Hwan Cha, H. Lee, Carmen Sangüesa

J. Comput. Appl. Math., June, 2024

Preventive maintenance for the constrained multi-attempt minimal repair.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., March, 2024

2023

Optimal preventive maintenance strategy for populations of systems that generate outputs.

Maxim Finkelstein, Ji Hwan Cha, Tim Bedford

Reliab. Eng. Syst. Saf., September, 2023

Improving classical optimal age-replacement policies for degrading items.

Maxim Finkelstein, Ji Hwan Cha, Amy Langston

Reliab. Eng. Syst. Saf., August, 2023

2022

Optimal preventive switching of components in degrading systems.

Maxim Finkelstein, Ji Hwan Cha, Amy Langston

Reliab. Eng. Syst. Saf., 2022

2021

Optimal warranty policy with inspection for heterogeneous, stochastically degrading items.

Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin

Eur. J. Oper. Res., 2021

2020

On a new age-replacement policy for items with observed stochastic degradation.

Maxim Finkelstein, Ji Hwan Cha, Gregory Levitin

Qual. Reliab. Eng. Int., 2020

2019

Stochastic modeling for systems with delayed failures.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., 2019

2018

Optimal replacement policy under a general failure and repair model: Minimal versus worse than old repair.

Francisco Germán Badía, María Dolores Berrade, Ji Hwan Cha, Hyunju Lee

Reliab. Eng. Syst. Saf., 2018

On optimal replacement of systems with failure rates described by a random jump process.

Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin

Qual. Reliab. Eng. Int., 2018

On preventive maintenance under different assumptions on the failure/repair processes.

Ji Hwan Cha, Maxim Finkelstein

Qual. Reliab. Eng. Int., 2018

Stochastic comparisons and multivariate dependence for the epoch times of trend renewal processes.

Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha

J. Multivar. Anal., 2018

On optimal operational sequence of components in a warm standby system.

Maxim Finkelstein, Nil Kamal Hazra, Ji Hwan Cha

J. Appl. Probab., 2018

Univariate and multivariate stochastic comparisons and ageing properties of the generalized Pólya process.

Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha

J. Appl. Probab., 2018

Optimal mission abort policy for partially repairable heterogeneous systems.

Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin

Eur. J. Oper. Res., 2018

Bivariate preventive maintenance of systems with lifetimes dependent on a random shock process.

Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin

Eur. J. Oper. Res., 2018

2017

On preventive maintenance of systems with lifetimes dependent on a random shock process.

Ji Hwan Cha, Maxim Finkelstein, Gregory Levitin

Reliab. Eng. Syst. Saf., 2017

Modeling Discrete Bivariate Data with Applications to Failure and Count Data.

Hyunju Lee, Ji Hwan Cha, Gianpaolo Pulcini

Qual. Reliab. Eng. Int., 2017

On optimal grouping and stochastic comparisons for heterogeneous items.

Nil Kamal Hazra, Maxim Finkelstein, Ji Hwan Cha

J. Multivar. Anal., 2017

2016

Maintenance Policy for a System With Stochastically Dependent Failure Modes With Shock-Accumulation Effect.

Ji Hwan Cha, Carmen Sangüesa, Inmaculada Torres Castro

IEEE Trans. Reliab., 2016

On Ageing Concepts for Repairable Items From Heterogeneous Populations.

Ji Hwan Cha, Maxim Finkelstein

IEEE Trans. Reliab., 2016

Optimal Long-Run Imperfect Maintenance With Asymptotic Virtual Age.

Ji Hwan Cha, Maxim Finkelstein

IEEE Trans. Reliab., 2016

Optimal Replacement of Heterogeneous Items With Minimal Repairs.

Ji Hwan Cha

IEEE Trans. Reliab., 2016

On some properties of shock processes in a 'natural' scale.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., 2016

A Dependent Competing Risks Model for Technological Units Subject to Degradation Phenomena and Catastrophic Failures.

Ji Hwan Cha, Gianpaolo Pulcini

Qual. Reliab. Eng. Int., 2016

Point process approach to modeling and analysis of general cascading failure models.

Hyunju Lee, Ji Hwan Cha

J. Appl. Probab., 2016

On information-based warranty policy for repairable products from heterogeneous population.

Hyunju Lee, Ji Hwan Cha, Maxim Finkelstein

Eur. J. Oper. Res., 2016

New stochastic models for preventive maintenance and maintenance optimization.

Hyunju Lee, Ji Hwan Cha

Eur. J. Oper. Res., 2016

Optimal burn-in procedure for mixed populations based on the device degradation process history.

Ji Hwan Cha, Gianpaolo Pulcini

Eur. J. Oper. Res., 2016

New shock models based on the generalized Polya process.

Ji Hwan Cha, Maxim Finkelstein

Eur. J. Oper. Res., 2016

2015

Environmental stress screening modelling, analysis and optimization.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., 2015

Construction of two new general classes of bivariate distributions based on stochastic orders.

Hyunju Lee, Ji Hwan Cha

J. Multivar. Anal., 2015

A Stochastic Failure Model with Dependent Competing Risks and its Applications to Condition-Based Maintenance.

Ji Hwan Cha, Inma T. Castro

J. Appl. Probab., 2015

2014

Some notes on unobserved parameters (frailties) in reliability modeling.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., 2014

On some conditional characteristics of hazard rate processes induced by external shocks.

Ji Hwan Cha, Maxim Finkelstein

Oper. Res. Lett., 2014

On construction of general classes of bivariate distributions.

Hyunju Lee, Ji Hwan Cha

J. Multivar. Anal., 2014

Stochastic comparison of multivariate conditionally dependent mixtures.

Francisco Germán Badía, Carmen Sangüesa, Ji Hwan Cha

J. Multivar. Anal., 2014

Stochastic Modeling for Environmental Stress Screening.

Ji Hwan Cha, Maxim Finkelstein

J. Appl. Probab., 2014

Survival of systems with protection subject to two types of external attacks.

Ji Hwan Cha, Maxim Finkelstein, Francois Marais

Ann. Oper. Res., 2014

2013

Results for Burn-in of Systems Under External Shocks.

Ji Hwan Cha, Maxim Finkelstein

IEEE Trans. Reliab., 2013

The failure rate dynamics in heterogeneous populations.

Ji Hwan Cha, Maxim Finkelstein

Reliab. Eng. Syst. Saf., 2013

On history-dependent shock models.

Ji Hwan Cha, Maxim Finkelstein

Oper. Res. Lett., 2013

On Stochastic Predictions of Failure Processes Under Population Heterogeneity.

Ji Hwan Cha

J. Appl. Probab., 2013

2012

Stochastic analysis of preventive maintenance in heterogeneous populations.

Ji Hwan Cha, Maxim Finkelstein

Oper. Res. Lett., 2012

A Note on the Failure Rates in Finite Mixed Populations.

Ji Hwan Cha, Massimiliano Giorgio

J. Appl. Probab., 2012

2011

Burn-in for Systems Operating in a Shock Environment.

Ji Hwan Cha, Maxim Finkelstein

IEEE Trans. Reliab., 2011

Burn-in and the performance quality measures in heterogeneous populations.

Ji Hwan Cha, Maxim Finkelstein

Eur. J. Oper. Res., 2011

Comparison of combined stochastic risk processes and its applications.

Ji Hwan Cha

Eur. J. Oper. Res., 2011

2010

Stochastically Ordered Subpopulations and Optimal Burn-In Procedure.

Ji Hwan Cha, Maxim Finkelstein

IEEE Trans. Reliab., 2010

Optimal design of a general warm standby system.

Won Young Yun, Ji Hwan Cha

Reliab. Eng. Syst. Saf., 2010

An extended stochastic failure model for a system subject to random shocks.

Ji Hwan Cha, Eui Yong Lee

Oper. Res. Lett., 2010

Burn-in by environmental shocks for two ordered subpopulations.

Ji Hwan Cha, Maxim Finkelstein

Eur. J. Oper. Res., 2010

2008

Optimal Burn-in for Minimizing Total Warranty Cost.

Ji Hwan Cha, Hisashi Yamamoto, Won Young Yun

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008

A Bayesian Change-Point Analysis for Software Reliability Models.

Seungmin Nam, Ji Hwan Cha, Sinsup Cho

Commun. Stat. Simul. Comput., 2008

2006

An extended model for optimal burn-in procedures.

Ji Hwan Cha

IEEE Trans. Reliab., 2006

Sequential Confidence Interval Estimation for System Availability.

Ji Hwan Cha, Sangyeol Lee, Jongwoo Jeon

Qual. Reliab. Eng. Int., 2006

Optimal Workload for a Multi-Tasking <i>k</i>-out-of-<i>n</i>: G Load Sharing System.

Ji Hwan Cha, Hisashi Yamamoto, Won Young Yun

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006

2005

On optimal burn-in procedures - a generalized model.

Ji Hwan Cha

IEEE Trans. Reliab., 2005