A Framework for Capacity and Operations Planning in Services Organizations Employing Workers with Intellectual Disabilities

[EN] This paper presents an integrated framework for capacity and operations planning in Spanish sheltered employment centers (SECs). Employment provides socio-economic opportunities for people with disability. Well functioning SECs that provide opportunities for people with and without disability to work alongside each other are an important component of Spain's current labor market. To be economically sustainable, SECs need to satisfy their clients expectations in terms of price, flexibility and performance, whilst taking into account and strengthening the diverse skills and abilities of their workforce like specific learning and forgetting processes. The SEC studied herein, a non-for-profit organization whose mission is to create employment for people with disabilities its workforce is deployed directly on clients' premises. Efficient management across this multi-site environment, whilst supporting the diverse employment needs of its staff, is of paramount importance. This paper contributes an integrated framework to support SEC capacity and operations planning, which prioritizes the explicit training needs of workers with disability at all levels (strategic, tactical, and operational) as a lever for achieving the organization's goals.García Sabater, JP.; Maheut, J.; Ruiz, A.; García Sabater, JJ. (2020). A Framework for Capacity and Operations Planning in Services Organizations Employing Workers with Intellectual Disabilities. Sustainability. 12(22):1-17. https://doi.org/10.3390/su12229713S1171222Fundación Espurnahttps://www.espurna.org/Convention on the Rights of Persons with Disabilities (A/RES/61/106)—Resolution adopted by the General Assembly on 13 December 2006https://www.un.org/en/development/desa/population/migration/generalassembly/docs/globalcompact/A_RES_61_106.pdfJarhag, S., Nilsson, G., & Werning, M. (2009). Disabled Persons and the Labor Market in Sweden. Social Work in Public Health, 24(3), 255-272. doi:10.1080/19371910802595315Mark, B. G., Hofmayer, S., Rauch, E., & Matt, D. T. (2019). Inclusion of Workers with Disabilities in Production 4.0: Legal Foundations in Europe and Potentials Through Worker Assistance Systems. Sustainability, 11(21), 5978. doi:10.3390/su11215978Santos, P. J. de los, & Costa, R. S. (2015). Workers with disabilities in sheltered employment centres: a training needs analysis. International Journal of Inclusive Education, 20(7), 756-769. doi:10.1080/13603116.2015.1111446Miralles, C., Marin-Garcia, J. A., Ferrus, G., & Costa, A. M. (2010). Operations research/management science tools for integrating people with disabilities into employment. A study on Valencia’s Sheltered Work Centres for Disabled. International Transactions in Operational Research, 17(4), 457-473. doi:10.1111/j.1475-3995.2009.00727.xChaves-Avila, R., & Savall-Morera, T. (2019). The Social Economy in a Context of Austerity Policies: The Tension Between Political Discourse and Implemented Policies in Spain. VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations, 30(3), 487-498. doi:10.1007/s11266-018-00075-3López-Penabad, M.-C., Maside-Sanfiz, J. M., Torrelles Manent, J., & Iglesias-Casal, A. (2020). Application of the DEA Double Bootstrap to Analyze Efficiency in Galician Sheltered Workshops. Sustainability, 12(16), 6625. doi:10.3390/su12166625Galeano Revert, A., García-Sabater, J. P., & Miralles Insa, C. (2018). Triple Bottom-line Business Model. Case study on the organic food retailing. WPOM-Working Papers on Operations Management, 9(1), 30. doi:10.4995/wpom.v9i1.9131Chi, C.-F., Dewi, R. S., Jang, Y., & Liu, H.-L. (2018). Workplace accommodation for workers with intellectual or psychiatric disabilities. International Journal of Industrial Ergonomics, 68, 1-7. doi:10.1016/j.ergon.2018.06.001Ellinger, A. E., Naidoo, J., Ellinger, A. D., Filips, K., & Herrin, G. D. (2020). Applying blue ocean strategy to hire and assimilate workers with disabilities into distribution centers. Business Horizons, 63(3), 339-350. doi:10.1016/j.bushor.2020.01.009Lindsay, S., Cagliostro, E., Albarico, M., Mortaji, N., & Karon, L. (2018). A Systematic Review of the Benefits of Hiring People with Disabilities. Journal of Occupational Rehabilitation, 28(4), 634-655. doi:10.1007/s10926-018-9756-zBitencourt, R. S., & de M. Guimarães, L. B. (2012). Inclusion of people with disabilities in the production system of a footwear industry. Work, 41, 4767-4774. doi:10.3233/wor-2012-0027-4767Hübner, A. H., Kuhn, H., & Sternbeck, M. G. (2013). Demand and supply chain planning in grocery retail: an operations planning framework. International Journal of Retail & Distribution Management, 41(7), 512-530. doi:10.1108/ijrdm-05-2013-0104Tuomikangas, N., & Kaipia, R. (2014). A coordination framework for sales and operations planning (S&OP): Synthesis from the literature. International Journal of Production Economics, 154, 243-262. doi:10.1016/j.ijpe.2014.04.026Li, Y., Chen, J., & Cai, X. (2007). An integrated staff-sizing approach considering feasibility of scheduling decision. Annals of Operations Research, 155(1), 361-390. doi:10.1007/s10479-007-0215-zZeng, L., Zhao, M., & Liu, Y. (2017). Airport ground workforce planning with hierarchical skills: a new formulation and branch-and-price approach. Annals of Operations Research, 275(1), 245-258. doi:10.1007/s10479-017-2624-yLlort, N., Lusa, A., Martínez-Costa, C., & Mateo, M. (2018). A decision support system and a mathematical model for strategic workforce planning in consultancies. Flexible Services and Manufacturing Journal, 31(2), 497-523. doi:10.1007/s10696-018-9321-2Van den Bergh, J., Beliën, J., De Bruecker, P., Demeulemeester, E., & De Boeck, L. (2013). Personnel scheduling: A literature review. European Journal of Operational Research, 226(3), 367-385. doi:10.1016/j.ejor.2012.11.029Henderson, J. C., Krajewski, L. J., & Showalter, M. J. (1982). An integrated approach for manpower planning in the service sector. Omega, 10(1), 61-73. doi:10.1016/0305-0483(82)90086-xKomarudin, De Feyter, T., Guerry, M.-A., & Vanden Berghe, G. (2020). The extended roster quality staffing problem: addressing roster quality variation within a staffing planning period. Journal of Scheduling, 23(2), 253-264. doi:10.1007/s10951-020-00654-7Das, D., & Yadav, C. (2020). A framework of hiring strategy for manpower hiring in a hyper-local food delivery organization. Journal of Advances in Management Research, 18(1), 113-135. doi:10.1108/jamr-06-2020-0104Maenhout, B., & Vanhoucke, M. (2013). An integrated nurse staffing and scheduling analysis for longer-term nursing staff allocation problems. Omega, 41(2), 485-499. doi:10.1016/j.omega.2012.01.002Benavides, A. J., Ritt, M., & Miralles, C. (2014). Flow shop scheduling with heterogeneous workers. European Journal of Operational Research, 237(2), 713-720. doi:10.1016/j.ejor.2014.02.012Miralles, C., García-Sabater, J. P., Andrés, C., & Cardós, M. (2008). Branch and bound procedures for solving the Assembly Line Worker Assignment and Balancing Problem: Application to Sheltered Work centres for Disabled. Discrete Applied Mathematics, 156(3), 352-367. doi:10.1016/j.dam.2005.12.012Moreira, M. C. O., Pastor, R., Costa, A. M., & Miralles, C. (2017). The multi-objective assembly line worker integration and balancing problem of type-2. Computers & Operations Research, 82, 114-125. doi:10.1016/j.cor.2017.01.003Bartlo, P., & Klein, P. J. (2011). Physical Activity Benefits and Needs in Adults With Intellectual Disabilities: Systematic Review of the Literature. American Journal on Intellectual and Developmental Disabilities, 116(3), 220-232. doi:10.1352/1944-7558-116.3.220Verdugo, M. A., Jordán de Urríes, F. B., Jenaro, C., Caballo, C., & Crespo, M. (2006). Quality of Life of Workers with an Intellectual Disability in Supported Employment. Journal of Applied Research in Intellectual Disabilities, 19(4), 309-316. doi:10.1111/j.1468-3148.2006.00277.xBossink, L. W. M., van der Putten, A. A., & Vlaskamp, C. (2017). Understanding low levels of physical activity in people with intellectual disabilities: A systematic review to identify barriers and facilitators. Research in Developmental Disabilities, 68, 95-110. doi:10.1016/j.ridd.2017.06.008Milner, A., LaMontagne, A. D., Aitken, Z., Bentley, R., & Kavanagh, A. M. (2014). Employment status and mental health among persons with and without a disability: evidence from an Australian cohort study. Journal of Epidemiology and Community Health, 68(11), 1064-1071. doi:10.1136/jech-2014-204147Nembhard, D. A., & Uzumeri, M. V. (2000). Experiential learning and forgetting for manual and cognitive tasks. 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Central European Journal of Operations Research, 28(1), 61-104. doi:10.1007/s10100-018-0594-

Interaction between local hydrodynamics and algal community in epilithic biofilm

Interactions between epilithic biofilm and local hydrodynamics were investigated in an experimental flume. Epilithic biofilm from a natural river was grown over a 41 day period in three sections with different flow velocities (0.10, 0.25 and 0.40 m s-¹ noted LV, IV and HV respectively). Friction velocities u* and boundary layer parameters were inferred from PIV measurement in the three sections and related to the biofilm structure. The results show that there were no significant differences in Dry Mass and Ash-Free Dry Mass (g m-²) at the end of experiment, but velocity is a selective factor in algal composition and the biofilms' morphology differed according to differences in water velocity. A hierarchical agglomerative cluster analysis (BrayeCurtis distances) and an Indicator Species Analysis (IndVal) showed that the indicator taxa were Fragilaria capucina var. mesolepta in the lowvelocity (u* = ¼ 0.010e0.012 m s-¹), Navicula atomus, Navicula capitatoradiata and Nitzschia frustulum in the intermediate velocity (u* = ¼ 0.023e0.030 m s-¹) and Amphora pediculus, Cymbella proxima, Fragilaria capucina var. vaucheriae and Surirella angusta in the high-velocity (u* = ¼ 0.033e0.050m s-¹) sections. A sloughing test was performed on 40-day-old biofilms in order to study the resistance of epilithic biofilms to higher hydrodynamic regimes. The results showed an inverse relationship between the proportion of detached biomass and the average value of friction velocity during growth. Therefore, water velocity during epilithic biofilm growth conditioned the structure and algal composition of biofilm, as well as its response (ability to resist) to higher shear stresses. This result should be considered in modelling epilithic biofilm dynamics in streams subject to a variable hydrodynamics regime

Hybrid approach of discrete event simulation integrated with location search algorithm in a cells assignment problem: a case study

[EN] This paper presents a case study describing a cell assignment problem in an assembly facility. These cells receive parts from external suppliers, and sort and sequence these parts to feed the final assembly line. Therefore, to each cell are associated important inbound and outbound flows generating hundreds of material handling equipment movements along the facility, impacting the traffic density and causing eventually safety issues in the plant. Following an important plant redesign, cells have been relocated, and the plant managers need to decide how to manage the new logistic flows. To that aim, a hybrid approach encompassing mathematical optimization and discrete event simulation (DES) is proposed. This approach allows us to reduce complexity by decomposing the design into two phases. The first phase deals with the problem of generating cell¿s assignment alternatives by using a heuristic method to find good quality solutions. Then, a DES software is used to dynamically evaluate the performance of the solutions with respect to operational features such as traffic congestion and intensity. This second phase provides interesting managerial insights on the manufacturing system from both quantitative and qualitative aspects related to in-plant safety and traffic.Saez-Mas, A.; García Sabater, JJ.; García Sabater, JP.; Maheut, J. (2020). Hybrid approach of discrete event simulation integrated with location search algorithm in a cells assignment problem: a case study. Central European Journal of Operations Research. 28(1):125-142. https://doi.org/10.1007/s10100-018-0548-5S125142281Anjos MF, Vieira MVC (2017) Mathematical optimization approaches for facility layout problems: the state-of-the-art and future research directions. Eur J Oper Res 261(1):1–16. https://doi.org/10.1016/j.ejor.2017.01.049Battini D, Boysen N, Emde S (2013) Just-in-time supermarkets for part supply in the automobile industry. J Manag Control 24(2):209–217. https://doi.org/10.1007/s00187-012-0154-yBenjaafar S (2002) Modeling and analysis of congestion in the design of facility layouts. Manag Sci 48(5):679–704. https://doi.org/10.1287/mnsc.48.5.679.7800Board TR (2010) Highway capacity manual. Environmental ProtectionBoysen N, Emde S, Hoeck M, Kauderer M (2015) Part logistics in the automotive industry: decision problems, literature review and research agenda. Eur J Oper Res 242(1):107–120. https://doi.org/10.1016/j.ejor.2014.09.065Caputo AC, Pelagagge PM, Salini P (2015) Modeling errors in kitting processes for assembly lines feeding. IFAC Proc Vol (IFAC PapersOnline) 48(3):338–344. https://doi.org/10.1016/j.ifacol.2015.06.104Centobelli P, Cerchione R, Murino T (2016) Layout and material flow optimization in digital factory. Int J Simul Model 15(2):223–235. https://doi.org/10.2507/IJSIMM15(2)3.327Dehghanimohammadabadi M, Keyser TK (2017) Intelligent simulation: integration of SIMIO and MATLAB to deploy decision support systems to simulation environment. Simul Model Pract Theory 71:45–60. https://doi.org/10.1016/j.simpat.2016.08.007Ficko M, Palcic I (2013) Designing a layout using the modified triangle method, and genetic algorithms. Int J Simul Model 12(4):237–251. https://doi.org/10.2507/IJSIMM12(4)3.244Gamberi M, Manzini R, Regattieri A (2009) An new approach for the automatic analysis and control of material handling systems: integrated layout flow analysis (ILFA). Int J Adv Manuf Technol 41(1–2):156–167. https://doi.org/10.1007/s00170-008-1466-9Gould O, Colwill J (2015) A framework for material flow assessment in manufacturing systems. J Ind Prod Eng 32(1):55–66. https://doi.org/10.1080/21681015.2014.1000403Hasda RK, Bhattacharjya RK, Bennis F (2016) Modified genetic algorithms for solving facility layout problems. Int J Interact Des Manuf (IJIDeM) 11(3):1–13. https://doi.org/10.1007/s12008-016-0362-zImran M, Kang C, Hae Lee Y, Zaib J, Aziz H (2017) Cell formation in a cellular manufacturing system using simulation integrated hybrid genetic algorithm. Comput Ind Eng 105:123–135. https://doi.org/10.1016/j.cie.2016.12.028Iqbal M, Hashmi MSJ (2001) Design and analysis of a virtual factory layout. J Mater Process Technol 118(1–3):403–410. https://doi.org/10.1016/S0924-0136(01)00908-6Jainury SM, Ramli R, Ab Rahman MN, Omar A (2014) Integrated Set Parts Supply system in a mixed-model assembly line. Comput Ind Eng 75(1):266–273. https://doi.org/10.1016/j.cie.2014.07.008Kanduc T, Rodic B (2016) Optimisation of machine layout using a force generated graph algorithm and simulated annealing. Int J Simul Model 15(2):275–287. https://doi.org/10.2507/IJSIMM15(2)7.335Kang J (2001) A new trend of parts supply system in Korean automobile industry; the case of the modular production system at Hyundai Motor Company. In: Proceedings of the fifth Russian-Korean international symposium on science and technology, 2001. KORUS '01. IEEE, Tomsk, Russia, Russia. https://doi.org/10.1109/KORUS.2001.975268Kim J, Yu G, Jang YJ (2016) Semiconductor FAB layout design analysis with 300-mm FAB data: “is minimum distance-based layout design best for semiconductor FAB design?”. Comput Ind Eng 99:330–346. https://doi.org/10.1016/j.cie.2016.02.012Krishnan KK, Jithavech I, Liao H (2009) Mitigation of risk in facility layout design for single and multi-period problems. Int J Prod Res 47(21):5911–5940. https://doi.org/10.1080/00207540802175337Ku M-Y, Hu MH, Wang M-J (2011) Simulated annealing based parallel genetic algorithm for facility layout problem. Int J Prod Res 49(6):1801–1812. https://doi.org/10.1080/00207541003645789Kulturel-Konak S (2017) A matheuristic approach for solving the dynamic facility layout a matheuristic approach for problem solving the dynamic facility layout problem. Proc Comput Sci 108(June):1374–1383. https://doi.org/10.1016/j.procs.2017.05.234Leveson N (2004) A new accident model for engineering safer systems. Saf Sci 42(4):237–270. https://doi.org/10.1016/S0925-7535(03)00047-XNegahban A, Smith JS (2014) Simulation for manufacturing system design and operation: literature review and analysis. J Manuf Syst 33(2):241–261. https://doi.org/10.1016/j.jmsy.2013.12.007Prajapat N, Tiwari A (2017) A review of assembly optimisation applications using discrete event simulation. Int J Comput Integr Manuf 30(2–3):215–228. https://doi.org/10.1080/0951192X.2016.1145812Saez-Mas A, Garcia-Sabater JP, Morant-Llorca J (2018) Using 4-layer architecture to simulate product and information flows in manufacturing. Int J Simul Model 17(1):30–41. https://doi.org/10.2507/IJSIMM17(1)408Seebacher G, Winkler H, Oberegger B (2015) In-plant logistics efficiency valuation using discrete event simulation. Int J Simul Model 14:60–70. https://doi.org/10.2507/IJSIMM14(1)6.289Singh RR, Sharma SPK (2006) A review of different approaches to the facility layout problems. Int J Adv Manuf Technol 30(5–6):425–433. https://doi.org/10.1007/s00170-005-0087-9Tompkins J, White J, Bozer Y, Tanchoco J (2003) Facilities planning. Wiley, New YorkTugnoli A, Khan F, Amyotte P, Cozzani V (2008) Safety assessment in plant layout design using indexing approach: implementing inherent safety perspective. Part 1—guideword applicability and method description. J Hazard Mater 160(1):100–109. https://doi.org/10.1016/j.jhazmat.2008.02.089Zhang M, Batta R, Nagi R (2009) Modeling of workflow congestion and optimization of flow routing in a manufacturing/warehouse facility. Manag Sci 55(2):267–280. https://doi.org/10.1287/mnsc.1080.0916Zhou F, AbouRizk SM, AL-Battaineh H (2009) Optimisation of construction site layout using a hybrid simulation-based system. Simul Model Pract Theory 17(2):348–363. https://doi.org/10.1016/j.simpat.2008.09.011Zhuo L, Chua Kim Huat D, Wee KH (2012) Scheduling dynamic block assembly in shipbuilding through hybrid simulation and spatial optimisation. Int J Prod Res 50(20):5986–6004. https://doi.org/10.1080/00207543.2011.639816Zupan H, Herakovic N, Starbek M (2016) hybrid algorithm based on priority rules for simulation of workshop production. Int J Simul Model 15(1):29–41. https://doi.org/10.2507/IJSIMM15(1)3.31

Recent manganese oxide octahedral molecular sieves OMS-2 with isomorphically substituted cationic dopants and their catalytic applications

[EN] The present report describes the structural and physical-chemical variations of the potassium manganese oxide mineral, alpha-MnO2, which is a specific manganese octahedral molecular sieve (OMS) named cryptomelane (K-OMS-2), with different transition metal cations. We will describe some frequently used synthesis methods to obtain isomorphic substituted materials [M]-K-OMS-2 by replacing the original manganese cationic species in a controlled way. It is important to note that one of the main effects of doping is related to electronic environmental changes, as well as to an increase of oxygen species mobility, which is ultimately related to the creation of new vacancies. Given the interest and the importance of these materials, here, we collect the most recent advances in [M]-K-OMS-2 oxides (M = Ag, Ce, Mo, V, Nb, W, In, Zr and Ru) that have appeared in the literature during the last ten years, leaving aside other metal-doped [M]-K-OMS-2 oxides that have already been treated in previous reviews. Besides showing the most important structural and physic-chemical features of these oxides, we will highlight their applications in the field of degradation of pollutants, fine chemistry and electrocatalysis, and will suggest potential alternative applications.This research was funded by the Ministerio de Ciencia e Innovacion (Gobierno de Espana) through the Severo Ochoa Program (SEV2016-0683) and Programa Estatal de Generacion de Conocimiento (PGC2018-101247-B-00).Sabate-Fornons, F.; Sabater Picot, MJ. (2021). Recent manganese oxide octahedral molecular sieves OMS-2 with isomorphically substituted cationic dopants and their catalytic applications. Catalysts. 11(10):1-34. https://doi.org/10.3390/catal11101147134111

La mejora de la empleabilidad de los discapacitados a través de los Centros de Ocupación laboral. Aportaciones de la Ingeniería de Organización Industrial.

El objetivo de este articulo es presentar un proyecto de investigación que pretende extender los beneficios de las técnicas de Ingeniería de Métodos a los entornos relacionados con los Centros Ocupacionales y Centros Especiales de Empleo de discapacitad

Comparison of heuristics for an economic lot scheduling problem with deliberated coproduction

We built on the Economic Lot Scheduling Problem Scheduling (ELSP) literature by making some modifications in order to introduce new constraints which had not been thoroughly studied with a view to simulating specific real situations. Specifically, our aim is to propose and simulate different scheduling policies for a new ELSP variant: Deliberated Coproduction. This problem comprises a product system in an ELSP environment in which we may choose if more than one product can be produced on the machine at a given time. We expressly consider the option of coproducing two products whose demand is not substitutable. In order to draw conclusions, a simulation model and its results were developed in the article by employing modified Bomberger data which include two items that could be produced simultaneouslyPeer Reviewe

“KPJ Airlines” case study

In this case study, a warehouse should be designed. The case is particular because the products are seats for planes.Maheut, JPD.; García Sabater, JP. (2022). “KPJ Airlines” case study. http://hdl.handle.net/10251/18077