251 research outputs found
On-demand food delivery: a systematic literature review
No full textPurpose: The purpose of this paper is twofold: first, to review the extant academic literature on on-demand food delivery (ODFD) services, i.e. the delivery of freshly prepared meals from restaurants to customers enabled by online platforms; second, to propose directions for future research in this field. Design/methodology/approach: This work reviews 59 papers published between 2016 and 2020. They are classified with respect to both their research methodology and the addressed themes, namely the actors involved and the activities creating value for the ODFD ecosystem. The latter was analysed by applying a framework derived from the integration of traditional models and literature about platforms/business ecosystems. Results were validated through interviews with practitioners. Findings: Due to its huge success and the significant complexities behind it, the ODFD business has been gaining the interest of academics. The authors’ review highlights that (1) the perspectives of the various actors involved should be integrated, moving towards an ecosystem-based view; (2) future research should focus more on restaurant operations and their role in ODFD systems and (3) despite they have been investigated by several academic contributions, human resource management and logistics of ODFD systems still present room for further extensions, in the areas of intervention/regulation and distribution network/batching, respectively. Originality/value: This review offers insights to both academics and practitioners. On the academic side, it analyses the literature on ODFD systems, outlining directions for future research. On the managerial side, it provides a comprehensive view on the most critical value-creating activities for ODFD businesses
DIGITALIZATION IN CONSTRUCTION: BLOCKCHAIN APPLICABILITY IN THE INDUSTRY
No full textBlockchain, as a Distributed Ledger Technology (DLT), could disrupt the traditional hierarchy way in which information is shared and processes are developed in the construction industry. The fragmentation of people, processes and contracts has been considered as the main responsible for the sector negative trend. The information asymmetry characterizing the dynamics of the processes denies both the information traceability and the disciplines interoperability. The recent digital transformation boosted by Building Information Modeling (BIM) has promised a more transparent and collaborative environment. However, its adoption has gradually shown some trust issues in the information flow, discouraging participants from collaborating to achieve project goals. For these reasons, the research explores Blockchain in the construction industry, highlighting its potentials in supporting transparent, reliable and distributed information sharing. In particular, the research intends to combine the features of the digitalization, namely BIM and Blockchain, in the industry. To accomplish this, the first goal consists of an overall literature review on the current level of the Blockchain investigation in the built environment. Secondly, based on that analysis, two proposals for potential application of Blockchain in AECO sector are presented. This preliminary exploration intends to endorse Blockchain as a suitable system for governing the trust issues, supporting an efficient contract execution and a better sharing of all project information
Iscol@ Sardegna
No full textISCOL@ È IL PROGETTO SVILUPPATO DALLA REGIONE SARDEGNA PER ARGINARE
E CONTRASTARE IL FENOMENO DELL’ABBANDONO SCOLASTICO E PREVEDE ANCHE IL
MIGLIORAMENTO ARCHITETTONICO DELLE SCUOLE ESISTENTI E LA LORO MANUTENZION
BIM-ENABLED FACILITY MANAGEMENT OPTIMIZATION BASED ON POST-OCCUPANCY EVALUATIONS AND BUILDING MONITORING: FRAMEWORK AND FIRST RESULTS
No full textThis paper provides a methodological definition and the first setting of a BIM-enabled Facility Management approach for building stocks, to be applied to O&M contracts, based on Post-Occupancy Evaluation (POE) methods. The use of BIM, combined with advanced monitoring techniques, facilitates the development of effective decision-making approaches for the operational stage of the building Life Cycle. Information obtained through POEs performed on real-time data can converge in the BIM model-and related database-of the building, to be used as a data repository and as the base for future scenarios analyses, simulating potential optimizations in facility management. This approach is being applied and tested in a case study building. This work is developed by analyzing current FM techniques, followed by the installation of sensors and cameras in the case study building, monitoring current usage patterns. Post Occupancy Evaluation analyses are then carried out to define an updated and more efficient FM scenario. Further developments in this sense regard the development of a mobile application providing permanent monitoring of the O&M conditions and the setting of Smart Contracts for FM. This approach could facilitate optimization of space use, an increase in quality of O&M activities, and optimization of the contractual aspects of facility management
Retrofit attraverso pannelli prefabbricati: lo stato dell'arte
No full textThe aim of this paper is to provide an overview of the use of prefabricated panels in external building retrofitting. Building retrofit represents a pivotal point in terms of energy efficiency, as stressed by the European Directives EPBD 2002/91/EC, EED 2012/27/EU, 2009/28/EC, 2010/31/EU as well as by Horizon 2020, that also underlines the relevance of prefabrication as a primary retrofit strategies. Prefabrication can help overcoming the issues connected to traditional retrofit and provides advantages in terms of standardization in construction, a certain flexibility in architecture and the combination with conventional retrofit options; European projects, research works and architects designs have resulted in several proposals mainly focusing on residential context.
The review of the state of the art shows several approaches in terms of prefabricated panels: large modules, small modules, structural steel modules and partially prefabricated modules. The main challenges are linked to design, fabrication, transport and installation: the classification is based on those parameters, identifying the most promising innovation fields to be further investigated.
The building envelope represents a critical element to reach the 2050 decarbonisation goals; prefabrication in retrofit is expected to become a major tool to reach these goals. Some possible future developments are related to the thickness of the panel (linked to the use of innovative insulation material), and the adaptation in terms of finishing, dimensions and installation of the panel
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