Simulation Based Approach to Study the Interaction of Scheduling and Routing on a Logistic Network. - Alex J. Ruiz-Torres; John E. Tyworth (WSC, 1997)

Application of Real-Time Simulation to Assign Due Dates on Logistic-manufacturing Networks. - Alex J. Ruiz-Torres; Kazuo Nakatani (WSC, 1998)

Simulation based operational analysis of future space transportation systems. - Alex J. Ruiz-Torres; Edgar Zapata (WSC, 2000)

Minimizing makespan subject to minimum total flow-time on identical parallel machines. - Jatinder N. D. Gupta; Alex J. Ruiz-Torres (Eur. J. Oper. Res., 2000)

Minimizing maximum tardiness and number of tardy jobs on parallel machines subject to minimum flow-time. - Jatinder N. D. Gupta; Alex J. Ruiz-Torres; Scott Webster (J. Oper. Res. Soc., 2003)

An Integrated Estimation and Modeling Environment for the Design of the Orbital Space Plane. - Dayana Cope; Mansooreh Mollaghasemi; Assem Kaylani; Alex J. Ruiz-Torres; Martin J. Steele; Marcella L. Cowen (WSC, 2004)

Using the FDH formulation of DEA to evaluate a multi-criteria problem in parallel machine scheduling. - Alex J. Ruiz-Torres; Francisco J. López (Comput. Ind. Eng., 2004)

Generating efficient schedules for identical parallel machines involving flow-time and tardy jobs. - Jatinder N. D. Gupta; Alex J. Ruiz-Torres (Eur. J. Oper. Res., 2005)

Knowledge based representation and operations assessment of space transportation system architectures. - Alex J. Ruiz-Torres; Edgar Zapata; Kazuo Nakatani; Marcella L. Cowen (Knowl. Based Syst., 2006)

Scheduling with flexible resources in parallel workcenters to minimize maximum completion time. - Alex J. Ruiz-Torres; Grisselle Centeno (Comput. Oper. Res., 2007)

Scheduling uniform parallel machines subject to a secondary resource to minimize the number of tardy jobs. - Alex J. Ruiz-Torres; Francisco J. López; Johnny C. Ho (Eur. J. Oper. Res., 2007)

Minimizing the number of late jobs for the permutation flowshop problem with secondary resources. - Alex J. Ruiz-Torres; Grisselle Centeno (Comput. Oper. Res., 2008)

Minimizing the normalized sum of square for workload deviations on m parallel processors. - Johnny C. Ho; Tzu-Liang (Bill) Tseng; Alex J. Ruiz-Torres; Francisco J. López (Comput. Ind. Eng., 2009)

A systematic approach for resource allocation in software projects. - Luis Daniel Otero; Grisselle Centeno; Alex J. Ruiz-Torres; Carlos E. Otero (Comput. Ind. Eng., 2009)

Minimizing the number of tardy jobs in the flowshop problem with operation and resource flexibility. - Alex J. Ruiz-Torres; José Humberto Ablanedo-Rosas; Johnny C. Ho (Comput. Oper. Res., 2010)

Parallel machine scheduling problems considering regular measures of performance and machine cost. - Alex J. Ruiz-Torres; Francisco J. López; Piotr J. Wojciechowski; Johnny C. Ho (J. Oper. Res. Soc., 2010)

Minimizing total weighted flowtime subject to minimum makespan on two identical parallel machines. - Johnny C. Ho; Francisco J. López; Alex J. Ruiz-Torres; Tzu-Liang (Bill) Tseng (J. Intell. Manuf., 2011)

Dynamic Intelligent System for Sourcing Contingency Planning Considering Supplier Failures. - Alex J. Ruiz-Torres; Farzad Mahmoodi; Amy Z. Zeng; Elsa Nieves-Rodriguez (EMS, 2012)

A new heuristic for workload balancing on identical parallel machines and a statistical perspective on the workload balancing criteria. - A. Cossari; Johnny C. Ho; Giuseppe Paletta; Alex J. Ruiz-Torres (Comput. Oper. Res., 2012)

Supplier selection model with contingency planning for supplier failures. - Alex J. Ruiz-Torres; Farzad Mahmoodi; Amy Z. Zeng (Comput. Ind. Eng., 2013)

Parallel machine scheduling to minimize the makespan with sequence dependent deteriorating effects. - Alex J. Ruiz-Torres; Giuseppe Paletta; Eduardo Pérez-Roman (Comput. Oper. Res., 2013)

Maximizing the Percentage of On-Time Jobs with Sequence Dependent Deteriorating Process Times. - Alex J. Ruiz-Torres; Giuseppe Paletta; Eduardo Pérez-Roman (Int. J. Oper. Res. Inf. Syst., 2015)

Partial Solutions and MultiFit Algorithm for Multiprocessor Scheduling. - Giuseppe Paletta; Alex J. Ruiz-Torres (J. Math. Model. Algorithms Oper. Res., 2015)

A note on longest processing time algorithms for the two uniform parallel machine makespan minimization problem. - Ivar Massabò; Giuseppe Paletta; Alex J. Ruiz-Torres (J. Sched., 2016)

Quality assurance laboratory planning system to maximize worker preference subject to certification and preference balance constraints. - Alex J. Ruiz-Torres; Farzad Mahmoodi; Markku Kuula (Comput. Oper. Res., 2017)

Makespan minimisation with sequence-dependent machine deterioration and maintenance events. - Alex J. Ruiz-Torres; Giuseppe Paletta; Rym M'Hallah (Int. J. Prod. Res., 2017)

Scheduling assemble-to-order systems with multiple cells to minimize costs and tardy deliveries. - Alex J. Ruiz-Torres; Giuseppe Paletta; Farzad Mahmoodi; José Humberto Ablanedo-Rosas (Comput. Ind. Eng., 2018)

A note on posterior tight worst-case bounds for longest processing time schedules. - Johnny C. Ho; Ivar Massabò; Giuseppe Paletta; Alex J. Ruiz-Torres (4OR, 2019)

Scheduling workers: A multi-criteria model considering their satisfaction. - Alex J. Ruiz-Torres; José Humberto Ablanedo-Rosas; Somnath Mukhopadhyay; Giuseppe Paletta (Comput. Ind. Eng., 2019)

The Multiple Supply Chain Design Problem: Integration of Multiple Configurations Based on Product, Customer, and Supply Chain Characteristics. - Shunichi Ohmori; Tsuneaki Arakane; Alex J. Ruiz-Torres; Kazuho Yoshimoto (Int. J. Inf. Syst. Supply Chain Manag., 2021)

Hybrid two stage flowshop scheduling with secondary resources based on time buckets. - Alex J. Ruiz-Torres; Giuseppe Paletta; Belarmino Adenso-Díaz (Int. J. Prod. Res., 2022)

Scheduling in parallel machines with two objectives: analysis of factors that influence the Pareto frontier. - Julio Mar-Ortiz; Alex J. Ruiz-Torres; Belarmino Adenso-Díaz (Oper. Res., 2022)

Determining number of suppliers, duration of supply cycle and allocation to in-house production under supply uncertainty. - Alex J. Ruiz-Torres; José Humberto Ablanedo-Rosas; Farzad Mahmoodi; Shunichi Ohmori (Comput. Ind. Eng., 2023)

MIP model and heuristics to minimize environmental metrics in a production environment with deteriorating machines, skilled workers, and finishing tools, the case of a pottery handicrafts workshop. - Norelhouda Sekkal; Alex J. Ruiz-Torres (Expert Syst. Appl., 2025)