scholarly journals A Methodology for the Multi-Point Characterization of Short-Term Temperature Fluctuations in Complex Microclimates Based on the European Standard EN 15757:2010: Application to the Archaeological Museum of L’Almoina (Valencia, Spain)

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7754
Author(s):  
Ignacio Díaz-Arellano ◽  
Manuel Zarzo ◽  
Fernando-Juan García-Diego ◽  
Angel Perles
Keyword(s):  
Seasonal Patterns ◽  
Monitoring And Control ◽  
European Standard ◽  
Preventive Conservation ◽  
Multiple Sensors ◽  
Data Loggers ◽  
Heritage Buildings ◽  
Single Sensor ◽  
And Control

The monitoring and control of thermo-hygrometric indoor conditions is necessary for an adequate preservation of cultural heritage. The European standard EN 15757:2010 specifies a procedure for determining if seasonal patterns of relative humidity (RH) and temperature are adequate for the long-term preservation of hygroscopic materials on display at museums, archives, libraries or heritage buildings. This procedure is based on the characterization of the seasonal patterns and the calculation of certain control limits, so that it is possible to assess whether certain changes in the microclimate can be harmful for the preventive conservation of artworks, which would lead to the implementation of corrective actions. In order to discuss the application of this standard, 27 autonomous data-loggers were located in different points at the Archaeological Museum of l’Almoina (Valencia). The HVAC system (heating, ventilation and air conditioning) at the museum tries to reach certain homogeneous environment, which becomes a challenge because parts of the ruins are covered by a skylight that produces a greenhouse effect in summer, resulting in severe thermo-hygrometric gradients. Based on the analysis of temperatures recorded during 16 months, the air conditions in this museum are discussed according to the standard EN 15757:2010, and some corrective measures are proposed to improve the conservation conditions. Although this standard is basically intended for data recorded from a single sensor, an alternative approach proposed in this work is to find zones inside the museum with a homogeneous microclimate and to discuss next the average values collected in each area. A methodology is presented to optimize the application of this standard in places with a complex microclimate like this case, when multiple sensors are located at different positions.

Preventive conservation tools in southern Ecuador

2018 ◽  
Vol 8 (2) ◽  
pp. 207-220 ◽  
Author(s):  
Fausto Cardoso ◽  
Maria Cecilia Achig-Balarezo ◽  
Gabriela Barsallo
Keyword(s):  
Control System ◽  
Monitoring And Control ◽  
Research Project ◽  
Monitoring And Control System ◽  
Registration System ◽  
Content Type ◽  
Preventive Conservation ◽  
Southern Ecuador ◽  
Heritage Buildings ◽  
And Control

Purpose The purpose of this paper is to present tools to support the preventive conservation of heritage buildings as part of the results of the vlirCPM research project. The tools presented are inventory systems, damage registration system, monitoring and control system, which include preventive conservation manuals and maintenance booklets. Design/methodology/approach The methodology proposes the design of tools that support the preventive conservation of heritage buildings, which have been designed, tested and applied in the south of Ecuador through the use of maintenance campaigns in rural and urban areas. Findings The project developed and tested some important analysis methodologies that are now part of the research and documentation activities of the monuments of Cuenca, which have been addressed in this paper, such as the damage registration system of heritage buildings (SISREDA), the monitoring and control system, the preventive conservation manuals, the maintenance booklets and its application in the maintenance campaigns. Originality/value The city of Cuenca, recognized as Cultural Heritage of Humanity (UNESCO, 1999), has a wealth of heritage buildings which are susceptible to several threats that cause its deterioration. The vlirCPM (World Heritage City) research project of the faculty of architecture of the University of Cuenca has contributed to the development of tools to improve the management of world heritage sites in southern Ecuador. These tools are the result of ten years of research.

scholarly journals STRATEGIES FOR THE MANAGEMENT OF BUILT HERITAGE LINKED TO MAINTENANCE AND MONITORING. CASE STUDY OF THE SAN ROQUE NEIGHBORHOOD, CUENCA, ECUADOR

2017 ◽  
Vol XLII-2/W5 ◽  
pp. 755-761 ◽  
Author(s):  
M. C. Achig-Balarezo ◽  
L. Vázquez ◽  
M. G. Barsallo ◽  
J. C. Briones ◽  
J. Amaya
Keyword(s):  
Citizen Participation ◽  
Control Strategies ◽  
Monitoring And Control ◽  
The Sustainable Development ◽  
Preventive Conservation ◽  
Heritage Sites ◽  
Built Heritage ◽  
Strategic Factor ◽  
Historical Sites ◽  
And Control

The rehabilitation of heritage sites, as well as the implementation of monitoring and control strategies is fundamental for its conservation. In the case of Cuenca, a World Heritage City, a maintenance campaign in the traditional neighborhood of San Roque was carried out in 2014. The objective was to undertake maintenance actions on roofs and façades as well as on elements at risk. The campaign process was developed keeping in mind the cycle or phases of preventive conservation: anamnesis, diagnosis, therapy and control (ICOMOS, 2003). At the end of the maintenance campaign an impact assessment was undertaken and monitoring tools were handed out to the community in order to strengthen the citizen participation in the preservation of built heritage. The experience of the maintenance campaign unveiled a series of lessons that have been evaluated in the present investigation, being the main objective the strengthening of the processes of governance and documentation through the formulation of strategies inherent to the maintenance of heritage buildings. In this process it is shown that the participation of citizens is a strategic factor for the sustainable development of maintenance campaigns, which allow for the preservation of historical sites for future generations.

scholarly journals Determining the Effects of Nanonutrient Application in Cabbage (Brassica oleracea var. capitate L.) Using Spectrometry and Biomass Estimation with UAV

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 81
Author(s):  
Izar Sinde-González ◽  
Josselyn Paola Gómez-López ◽  
Stalin Alejandro Tapia-Navarro ◽  
Erika Murgueitio ◽  
César Falconí ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Vegetation Indices ◽  
Biomass Estimation ◽  
Monitoring And Control ◽  
Geospatial Technologies ◽  
Digital Format ◽  
Dry Biomass ◽  
And Control ◽  
The Relationship

Geospatial technologies are presented as an alternative for the monitoring and control of crops, as demonstrated through the analysis of spectral responses (SR) of each species. In this study, it was intended to determine the effects of the application of nanonutrients (Zn and Mn) in cabbage (Brassica oleracea var. capitate L.) by analyzing the relationship between the vegetation indices (VI) NDVI, GNDVI, NGRDI, RVI, GVI, CCI RARSa and the content of chlorophyll (CC), from two trials established in the field and in the greenhouse, together with the calculation of dry biomass production in the field through the use of digital models and its further validation. The results indicated that for greenhouse experiments no significant differences were found between the VIs in the implemented treatments, rather for their phenological states. Whereas in the field assays it was evidenced that there were significant differences between the VIs for the treatments, as well as for the phenological states. The SR issued in the field allowed the evaluation of the behavior of the crop due to the application of nanonutrients, which did not occur in the greenhouse, in the same way. The SR also enabled the spectral characterization of the crop in its phenological states in the two trials. All this information was stored in a digital format, which allowed the creation of a spectral library which was published on a web server. The validation of the dry biomass allowed, by statistical analysis, the efficiency of the method used for its estimation to be confirmed.

scholarly journals An IOT-based Multi-sensor Ecological Shared Farmland Management System

2018 ◽  
Vol 14 (03) ◽  
pp. 81 ◽  
Author(s):  
Gao Guandong ◽  
Jia Yuchen ◽  
Xiao Ke
Keyword(s):  
Real Time ◽  
Management System ◽  
Product Information ◽  
Co2 Concentration ◽  
Agricultural Product ◽  
Monitoring And Control ◽  
Multiple Sensors ◽  
Economic Output ◽  
Electronic Tags ◽  
And Control

With the wide adoption of a shared economy, the term “share” has become closely linked with people’s daily life. To improve the economic output per unit area of farmland and allow urban residents to experience the fun of cultivating, an IOT-based multi-sensor ecological shared farmland management system is presented and designed in this paper. And an agricultural economy model that remote planting and gains sharing was also presented. This system consists of multiple sensors for data collection, automatically controlled equipment, a transport module (with a ZigBee module and a WiFi module), an app-based smart monitoring and control module and a WeChat public platform. Various information, including air temperature and humidity, soil humidity, illuminance, CO2 concentration, pH, real-time video and images, is collected for users to ensure an optimal crop growing environment via remote control and by sharing agricultural product information in harvesting seasons. Functions such as picking, leasing and transferring are implemented via the WeChat public platform. Not only is detailed information on vegetables growing in rented farmland available remotely via RFID electronic tags and multiple sensors but the real-time growing state of the planted crops is also available via camera. Control of functions such as irrigating, fertilizing and shading is also supported. The test shows that in this system, the data collected via multiple sensors are accurate; real-time information is transmitted and managed smoothly.

On-Board Characterization of Engine Dynamics for Health Monitoring and Control

2005 ◽  
Author(s):  
Onder Uluyol ◽  
Kyusung Kim ◽  
Charles Ball
Keyword(s):  
Feature Extraction ◽  
Health Monitoring ◽  
High Speed ◽  
Monitoring And Control ◽  
Mechanical Assembly ◽  
Time Data ◽  
Feature Extraction Method ◽  
Limited Bandwidth ◽  
And Control

This paper introduces a feature extraction method for characterization of gas turbine engine dynamics for the purpose of engine health monitoring as well as optimum control. For a vehicle health monitoring system that is comprehensive in its scope, and timely and accurate in its diagnosis, high fidelity engine models and a large amount of high-speed data both in steady-state as well as in transients are needed. However, limited computational resources available on-board, and the limited bandwidth capacity and the high cost of real-time data transmission place serious barriers in fulfilling that need. The approach presented in the paper seeks to overcome these barriers by separating the initial feature extraction stage of diagnostics algorithms from the modeling and trending stages. The first part which includes the detection of time instances that are critical to diagnosis and control is performed on board, while the latter is performed on a ground station. The approach is applied to the startup transient in a propulsion engine. A 50-fold reduction in data size is realized while achieving a highly accurate prognosis of hydro-mechanical assembly (HMA) failures.

scholarly journals Feature Descriptors Applied to Slag Characterization on Casting Process

2020 ◽  
Vol 6 (4) ◽  
pp. 11-15
Keyword(s):  
High Temperatures ◽  
Casting Process ◽  
Human Operator ◽  
Process Conditions ◽  
Monitoring And Control ◽  
Vision Systems ◽  
Feature Descriptors ◽  
And Control

Vision systems are increasingly entering the field of metallurgy, carrying out operations where a human operator is not possible due to the process conditions. The purpose of these systems is the monitoring and control of the process to improve the quality and manufacturing of the products. Nevertheless, the amount of slag, the presence of gases and high temperatures are the main problems that make this task difficult. In this proposal the characterization of the slag is treated, through the analysis of the light changes with the functions of Fourier and Gabor, which allow to identify or locate the location of the slag in the material, so that, in future works the slag It can be segmented, measured or used to detect the level of the metal in the refractory. In addition, results obtained when evaluating sensitivity and precision curves are presented, with which the information recovered by the algorithms is evaluated.

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