https://hdl.handle.net/10481/33176 2026-04-11T17:37:18Z https://hdl.handle.net/10481/112526 Business Continuity Management—Identifying Relevant Processes for a Reference Model Arias Aranda, Daniel; Haufe, Knut; Dzombeta, Srdan; Stantchev, Vladimir Currently, a standardized process reference model specifically tailored for the business continuity management system (BCMS) is absent. Moreover, BCMS processes have not been a primary focus of ongoing research endeavors. This paper aims to fill this research gap by presenting findings from a process mapping study concerning BCMS processes within the most prominent and widely acknowledged standards for business continuity management, alongside insights gleaned from expert interviews. The authors propose a collection of BCMS processes that should comprise a BCMS process reference model intended for implementation at a maturity level tailored to individual organizational needs. It aims to strengthen the resilience of organizations to cyber threats and to optimize the processes for effective management within the disaster management cycle. The study identifies and maps the necessary processes required to build a comprehensive BCMS model. These processes include, among others, risk assessment, business impact analysis, the development of BC strategies and solutions, the creation of BC plans and procedures, incident and emergency management, and periodic reviews and exercises. The relevance of these processes was validated through expert interviews, making a clear distinction between core, management, and support processes. https://hdl.handle.net/10481/111587 Zero-Shot Social Media Crisis Classification: A Training-Free Multimodal Approach Schwarz, Franziska; Dieter Schwarz, Klaus; Arias Aranda, Daniel; Bollens, Kendrick; Shivananjappa, Navaneeth; Creutzburg, Reiner; Dimitrova, Vesna Rapid classification of social media content during humanitarian crises is essential for effective disaster relief; however, traditional approaches require extensive annotated training data, which are often unavailable during new disasters. This paper presents a training-free, multimodal classification framework that leverages zero-shot vision-language models to analyze disaster-related social media content without task-specific training. The framework employs a two-stage prompt-engineered pipeline using the locally deployable Mistral-Small-3.1-24B-Instruct model, performing binary informativeness detection followed by multiclass categorization into eight humanitarian categories through structured JSON output generation. Evaluation on the CrisisMMD dataset of 18,082 multimodal samples from seven natural disasters demonstrated binary F1 scores above 0.84 for both text and image informativeness detection and weighted F1 scores of 0.61 (text) and 0.72 (image) for humanitarian categorization. The framework generalizes consistently across all disaster types with minimal performance variance (standard deviation below 0.031) and operates entirely on local infrastructure without cloud dependencies, requiring only moderate GPU resources. By eliminating training data requirements, this approach enables immediate deployment during new disasters, demonstrating that zero-shot multimodal classification achieves practically relevant performance for real-time crisis response. https://hdl.handle.net/10481/110975 2QGRU: Power-of-Two Quantization for Efficient FPGA-Based Gated Recurrent Unit Architectures Molina Fernández, Luis Miguel; Hu Chen, Shao Jie; Méndez Gómez, Javier; Morales Santos, Diego Pedro; Pegalajar Cuéllar, Manuel; López Vallejo, Marisa This paper proposes a power-of-two-based quantization technique aimed at improving the hardware efficiency of artificial neural networks (ANNs) implemented on field programmablegatearrays(FPGAs). Theeffectivenessoftheproposedapproachisvalidated using gated recurrent unit (GRU) models. The resulting architecture, referred to as 2QGRU, exploits parallelism, optimized operation scheduling, and fine-grained data bit-width management to achieve efficient hardware realization. Compared with state-of-the-art FPGA implementations based on sparsity compression, 2QGRU demonstrates superior performance in terms of resource utilization and power consumption, while eliminating the need for dedicated DSP blocks. Furthermore, area and power efficiency can be further improved by trading latency for reduced hardware cost through an integrated implemen tation reduction strategy, enabling deployment on highly resource-constrained devices. Finally, the 2QGRU model is integrated into an automated ANN framework, allowing the proposed quantization and hardware optimization techniques to be readily extended to other ANNmodels and FPGA-based deployments. https://hdl.handle.net/10481/110530 ¿Por qué las prácticas de recursos humanos de alto rendimiento no bastan para que los empleados de hotel desarrollen un comportamiento extra-rol? Rojo Gallego-Burín, Araceli María; Huertas Valdivia, Irene; Riquelme Medina, Marta; Pérez Arostegui, María De Las Nieves Este estudio analiza la influencia de las prácticas de recursos humanos de alto rendimiento (PAR) en la adopción de un estilo de liderazgo servicial en hotelería, y cómo esto, a su vez, puede generar resultados positivos en el entusiasmo laboral y en el comportamiento extra-rol de los trabajadores. El objetivo principal de esta investigación es identificar factores organizacionales clave que puedan tener una influencia positiva en el desempeño del trabajador hotelero. Para ello, se valida un modelo de mediación serial con dos mediadores en una muestra de trabajadores hoteleros en España a través de ecuaciones estructurales empleando el programa Amos. Los resultados demuestran cómo las PAR crean un entorno propicio para el liderazgo servicial del jefe, así como sus efectos positivos en el entusiasmo laboral del trabajador. Se destaca también el importante papel que juega el entusiasmo laboral como antecedente del comportamiento extra-rol del empleado: resulta indispensable en primer lugar afectar positivamente la experiencia psicológica del trabajador, fomentando el entusiasmo laboral. Este trabajo tiene implicaciones prácticas tanto para la industria hotelera como para otras empresas del sector servicios, ya que pone de manifiesto cómo optimizar las prácticas de recursos humanos en la empresa para lograr mejores resultados por parte de los trabajadores. https://hdl.handle.net/10481/110350 Ambidextrous supply chain stragegy and supply chain flexibility: The contingent effect of ISO 9001 Rojo Gallego-Burín, Araceli María; Lloréns Montes, Francisco Javier; Pérez Arostegui, María De Las Nieves; Stevenson, Mark Purpose: To study the effect of an ambidextrous supply chain strategy (ASCS) – i.e. the juxtaposition of exploration and exploitation practices – on each of the four dimensions of supply chain flexibility (SCF): information system, operating system, sourcing, and distribution flexibility. Further, to evaluate the influence of implementing the ISO 9001 standard on the relationship between ASCS and SCF, and whether this certification directly affects the level of SCF. We based our model in Resource Orchestration theory. Design/methodology/approach: To perform this study, the authors used data collected from a sample of 145 non-ISO-certified firms and 157 ISO-certified firms. Findings: ASCS does not affect all four dimensions of SCF in the same way. Rather, its effect is contingent on the presence of the ISO 9001 certification. An ASCS is shown to have a positive effect on information system flexibility irrespective of the presence of ISO 9001 certification whereas, for the other three dimensions of SCF, the effect of ASCS is dependent on ISO 9001 implementation. Meanwhile, ISO 9001 implementation itself does not affect the level of SCF. Practical implications: Managers can use the findings to configure their supply chain strategy based on the specific dimension(s) of SCF they seek to develop by implementing ASCS. Further, the results inform managers about the incentives for implementing ISO 9001. Originality/value: Although prior studies have shown that an ambidextrous strategy enables firms and organizational units to adapt to the environment, there have been few prior studies on ambidexterity in a supply chain setting. Further, although the extant literature has suggested that the ISO 9001 may facilitate ambidexterity, this link has remained largely theoretical. In fact, there is very little prior evidence on how the practice of ISO 9001 affects the supply chain. This work was supported by the Spanish Ministry of Economy and Competitiveness (Project ECO2017-84138-P MINECO) and FEDER (EU)/Andalusian Government (Project A-SEJ-154-UGR18).