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Prof. Ángel-Jesús Callejón-Ferre
University of Almeria (Spain)/Laboratory-Observatory Andalusian Working Conditions in the Agricultural Sector (LASA)-Spain

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0 Agricultural Engineering
0 Greenhouse
0 Industrial Engineering
0 Renewable and Sustainable Energy
0 Occupational Health and Safety

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Agricultural Engineering

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Journal article
Published: 09 June 2021 in Agriculture
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The cultivation of vegetables in greenhouses is characterised by high planting density and environmental conditions that favour the development of pests and diseases. These are mainly controlled using plant protection products applied with a hand-held sprayer. This is inefficient low-tech equipment that is difficult to calibrate. The study evaluates one hand-held spray gun and two hand-held spray lances that are widely used in greenhouse vegetable crops. The tests were carried out on a pepper crop at two different developmental stages. Plant canopy deposition and losses to the ground were quantified using a colorimetric method based on applying a tartrazine solution. The results show that the flat-fan spray lance obtains a more uniform spray distribution in the plant canopy and results in losses to the ground that are between 2 and 2.75 times less than when using the other hand-held sprayers tested.

ACS Style

Julián Sánchez-Hermosilla; Victor Rincón; Francisco Páez; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre. Evaluation of the Effect of Different Hand-Held Sprayer Types on a Greenhouse Pepper Crop. Agriculture 2021, 11, 532 .

AMA Style

Julián Sánchez-Hermosilla, Victor Rincón, Francisco Páez, José Pérez-Alonso, Ángel-Jesús Callejón-Ferre. Evaluation of the Effect of Different Hand-Held Sprayer Types on a Greenhouse Pepper Crop. Agriculture. 2021; 11 (6):532.

Chicago/Turabian Style

Julián Sánchez-Hermosilla; Victor Rincón; Francisco Páez; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre. 2021. "Evaluation of the Effect of Different Hand-Held Sprayer Types on a Greenhouse Pepper Crop." Agriculture 11, no. 6: 532.

Text
Published: 07 June 2021 in EXCLI Journal
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Agricultural workers have an increased risk of musculoskeletal disorders, mainly due to the manual nature of the work. This study assesses the level of physical well-being in pepper cultivation workers in Almería (Spain). The objective was to analyze pepper cultivation tasks performed in the Almería-type greenhouse, using the OWAS (Ovako Working Posture Assessment System) and RULA (Rapid Upper Limb Assessment) methods. The OWAS results showed a normal posture percentage of 53 %, a medium risk of 30 %, a high risk of 16 %, and a very high risk of 1 %. The body areas most affected were the back and legs. The RULA assessment found high risk/action levels, with 50 % of the postures corresponding to level 3, 35 % to level 4, and 15 % to level 2. Improvements are therefore proposed; these include: redesigning tasks, mechanization, training, team development, and improving the workers' physical condition. The OWAS and RULA data may have overestimated the results, as workers do not appear to be limited in performing tasks and do not normally request sick leave.

ACS Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; Manuel Díaz-Pérez; Ángel Carreño-Ortega; Alejandro López-Martínez. Risk of musculoskeletal disorders in pepper cultivation workers. EXCLI Journal 2021, 20, 1033 -1054.

AMA Style

Marta Gómez-Galán, Ángel-Jesús Callejón-Ferre, Manuel Díaz-Pérez, Ángel Carreño-Ortega, Alejandro López-Martínez. Risk of musculoskeletal disorders in pepper cultivation workers. EXCLI Journal. 2021; 20 ():1033-1054.

Chicago/Turabian Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; Manuel Díaz-Pérez; Ángel Carreño-Ortega; Alejandro López-Martínez. 2021. "Risk of musculoskeletal disorders in pepper cultivation workers." EXCLI Journal 20, no. : 1033-1054.

Journal article
Published: 03 June 2021 in Postharvest Biology and Technology
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The objective of the present study was to show the relationship between total soluble solids (TSS) and dry matter content (DMC) at harvest and of shelf life of cucumber (Cucumis sativus L.) cultivars. Two groups of cultivars with different production cycles were studied during two agricultural seasons. Sample cucumbers were stored for 28 d in the dark, at 10 °C, and 85–95 % relative humidity. The DMC, TSS, and commercial quality were determined every seven days. The crop cycle, harvest month, type of cultivar, and storage time affected cucumber DMC and TSS. The TSS content showed a linear relationship with DMC, which was maintained from harvest to senescence. In addition, the values of these two parameters decreased progressively during storage. The DMC and TSS at the time of collection may influence the shelf life of cucumbers, the higher their contents at harvest, the longer the shelf life. Therefore, the TSS and DMC of cucumbers measured at harvest can be used as indicators of cucumber shelf life.

ACS Style

Daniel Valverde-Miranda; Manuel Díaz-Pérez; Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre. Total soluble solids and dry matter of cucumber as indicators of shelf life. Postharvest Biology and Technology 2021, 180, 111603 .

AMA Style

Daniel Valverde-Miranda, Manuel Díaz-Pérez, Marta Gómez-Galán, Ángel-Jesús Callejón-Ferre. Total soluble solids and dry matter of cucumber as indicators of shelf life. Postharvest Biology and Technology. 2021; 180 ():111603.

Chicago/Turabian Style

Daniel Valverde-Miranda; Manuel Díaz-Pérez; Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre. 2021. "Total soluble solids and dry matter of cucumber as indicators of shelf life." Postharvest Biology and Technology 180, no. : 111603.

Journal article
Published: 29 April 2021 in International Journal of Environmental Research and Public Health
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This paper shows the prevalence of psychosocial risks for workers in the greenhouse construction industry in south-eastern Spain. Method: The assessment of the workers’ psychosocial risks was carried out through simple random sampling, which uses a questionnaire containing 13 variables characterizing the companies, 14 variables characterizing the workers, and 15 questions proposed by the Mini Psychosocial Factors (MPFs) risk assessment method. A descriptive analysis and multiple correspondence analysis were performed on the sample data. Results: Greenhouse construction businesses in south-eastern Spain can generally be classified as small companies with an average annual turnover below EUR 2.0 million (69.3%), an average of 22.8 workers with an average age of 39.84 years old, most of whom are married, with an average of 1.76 children. The prevalence of workers at high risk was 2.9%, while 45.1% were at medium-high risk. Of the 12 psychosocial factors assessed using the MPF method, 7 of them presented a high level of worker risk: Mobbing (3.2%), Relationships (1.6%), Recognition (1.6%), Autonomy (12.9%), Emotional (8.0%), Control (4.8%), and Demands (3.2%). Lastly, the variables were grouped into four clusters, showing that larger companies are correlated with a medium (workers over 40 years of age or less than 25 years of age) to high (workers under 25 years of age) risk level in several of the psychosocial factors assessed for workers who are Spanish nationals, while in smaller companies, the workers are usually middle aged (between 25 and 40 years old) and from Eastern Europe or Africa, presenting either a low or high level of risk depending on the psychosocial factors and tasks performed. Impact of the results: The study reveals a lack of prevention management regarding psychosocial risks. Therefore, it is necessary to carry out new prevention programmes that optimise the psychosocial conditions of the workers, involving the workers, employers, and other social agents.

ACS Style

José Pérez-Alonso; Marta Gómez-Galán; Marta Agüera-Puntas; Julián Sánchez-Hermosilla; Ángel-Jesús Callejón-Ferre. Approach for Assessing the Prevalence of Psychosocial Risks of Workers in the Greenhouse Construction Industry in South-Eastern Spain. International Journal of Environmental Research and Public Health 2021, 18, 4753 .

AMA Style

José Pérez-Alonso, Marta Gómez-Galán, Marta Agüera-Puntas, Julián Sánchez-Hermosilla, Ángel-Jesús Callejón-Ferre. Approach for Assessing the Prevalence of Psychosocial Risks of Workers in the Greenhouse Construction Industry in South-Eastern Spain. International Journal of Environmental Research and Public Health. 2021; 18 (9):4753.

Chicago/Turabian Style

José Pérez-Alonso; Marta Gómez-Galán; Marta Agüera-Puntas; Julián Sánchez-Hermosilla; Ángel-Jesús Callejón-Ferre. 2021. "Approach for Assessing the Prevalence of Psychosocial Risks of Workers in the Greenhouse Construction Industry in South-Eastern Spain." International Journal of Environmental Research and Public Health 18, no. 9: 4753.

Journal article
Published: 05 November 2020 in JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT
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The construction industry is considered one of the highest risk production sectors, even more so in developing countries such as Guatemala. A characterization has been carried out on the perception of Guatemalan construction company managers regarding, the risk of accidents exist for the different activities they perform. The characterization has been carried out on a representative sample of the business population via a questionnaire. A preliminary data analysis was performed followed by a Descriptive and a Multiple Correspondence Analysis. Companies are characterized as “mediumsize” companies, with an average of 81.1 construction workers per year and average annual turnover of 1.29 million euros. 4 clusters of construction activities occur with similar accident weightings. Companies in Cluster 1 are associated to the variables grouped with a Low risk weighting, with a medium to high number of on-site workers and with a turnover of more than 100,000 euros. In contrast, those in Cluster 2 are associated with the variables grouped as having a Medium risk weighting, with a low number of on-site workers and a turnover of less than 100,000 euros. The companies in Cluster 3 are only associated with High risk weighted. And those of Cluster 4 with Not applicable risk-weighting variables.

ACS Style

Francisco Arturo Hernández-Arriaza; José Pérez-Alonso; Marta Gómez-Galán; Ferdinando Salata; Ángel Jesús Callejón-Ferre. THE GUATEMALAN CONSTRUCTION CHARACTERIZATON OF THE PERCEIVED RISK BY MANAGERS OF SUFFERING WORK ACCIDENTS. JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2020, 26, 705 -716.

AMA Style

Francisco Arturo Hernández-Arriaza, José Pérez-Alonso, Marta Gómez-Galán, Ferdinando Salata, Ángel Jesús Callejón-Ferre. THE GUATEMALAN CONSTRUCTION CHARACTERIZATON OF THE PERCEIVED RISK BY MANAGERS OF SUFFERING WORK ACCIDENTS. JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT. 2020; 26 (8):705-716.

Chicago/Turabian Style

Francisco Arturo Hernández-Arriaza; José Pérez-Alonso; Marta Gómez-Galán; Ferdinando Salata; Ángel Jesús Callejón-Ferre. 2020. "THE GUATEMALAN CONSTRUCTION CHARACTERIZATON OF THE PERCEIVED RISK BY MANAGERS OF SUFFERING WORK ACCIDENTS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 26, no. 8: 705-716.

Journal article
Published: 29 October 2020 in Agriculture
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Spain is the largest producer of olive oil in the world and, consequently, it has the world’s largest olive-growing area. Workers are highly exposed to musculoskeletal risks due to the manual nature of most of the tasks they perform. The objective of this study is to assess the musculoskeletal risks faced by olive workers in the province of Jaén (Spain) using the Standardized Nordic Questionnaire. This consists of 28 questions and analyzes the wrists/hands, elbows, shoulders, neck, back, hip, ankles, and knees. In total, 445 questionnaires were completed with variable additions from the workers’ environment: Sex, Age, Height, Weight, Body Mass Index, Crop Area, Irrigation System, Cultivation System, Nationality, Years of Experience, Cultivation Tasks, and Risk Prevention Service. The results indicate that 88.76% of workers presented some type of ailment and yet only knee problems prevented them from carrying out agricultural tasks in some cases. Certain recommendations are established to reduce musculoskeletal disorders in workers.

ACS Style

Manuel Barneo-Alcántara; Manuel Díaz-Pérez; Marta Gómez-Galán; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre. Musculoskeletal Risks of Farmers in the Olive Grove (Jaén-Spain). Agriculture 2020, 10, 511 .

AMA Style

Manuel Barneo-Alcántara, Manuel Díaz-Pérez, Marta Gómez-Galán, José Pérez-Alonso, Ángel-Jesús Callejón-Ferre. Musculoskeletal Risks of Farmers in the Olive Grove (Jaén-Spain). Agriculture. 2020; 10 (11):511.

Chicago/Turabian Style

Manuel Barneo-Alcántara; Manuel Díaz-Pérez; Marta Gómez-Galán; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre. 2020. "Musculoskeletal Risks of Farmers in the Olive Grove (Jaén-Spain)." Agriculture 10, no. 11: 511.

Journal article
Published: 01 September 2020 in Mathematics
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Students in the electrical branch of the short-cycle tertiary education program acquire developmental and design skills for low voltage transmission power lines. Aerial power line design requires mathematical tools not covered well enough in the curricula. Designing suspension cables requires the use of a Taylor series and integral calculation to obtain the parabola’s arc length. Moreover, it requires iterative procedures, such as the Newton–Raphson method, to solve the third-order equation of the steady-static response. The aim of this work is to solve the steady-static response equation for suspended cables using simple calculation tools. For this purpose, the influence of the horizontal component of the cable tension on its curvature was decoupled from the cable’s self-weight, which was responsible for the tension’s vertical component. To this end, we analyzed the laying and operation of the suspended cables by defining three phases (i.e., stressing, lifting, and operation). The phenomena that occurred in each phase were analyzed, as was their manifestation in the cable model. Herein, we developed and validated the solution of the steady-static response equation in suspended cables using simple equations supported with intuitive graphics. The best results of the proposed calculation procedure were obtained in conditions of large temperature variations.

ACS Style

José Agüero-Rubio; Javier López-Martínez; Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre. A Didactic Procedure to Solve the Equation of Steady-Static Response in Suspended Cables. Mathematics 2020, 8, 1468 .

AMA Style

José Agüero-Rubio, Javier López-Martínez, Marta Gómez-Galán, Ángel-Jesús Callejón-Ferre. A Didactic Procedure to Solve the Equation of Steady-Static Response in Suspended Cables. Mathematics. 2020; 8 (9):1468.

Chicago/Turabian Style

José Agüero-Rubio; Javier López-Martínez; Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre. 2020. "A Didactic Procedure to Solve the Equation of Steady-Static Response in Suspended Cables." Mathematics 8, no. 9: 1468.

Review
Published: 17 June 2020 in International Journal of Environmental Research and Public Health
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The objective of this study was to reveal RULA method applications in terms of the knowledge, country, year and journal categories. The search was performed using the “Web of Science Core Collection”. The period from 1993 to April 2019 was selected. Eight hundred nine results were obtained, of which 226 were used. The largest number of publications was determined to be in the fields of industry and health and social assistance, which coincides with the OWAS and Standardized Nordic Questionnaire methods. By country, the USA stands out for its greater number of research studies and categories that are encompassed. By date, 2016 was the year when more studies were carried out, again coinciding with the Standardized Nordic Questionnaire. By journal, “Work—A Journal of Prevention Assessment and Rehabilitation” is highlighted, as it is for the REBA method as well. It was concluded that RULA can be applied to workers in different fields, usually in combination with other methods, while technological advancement provides benefits for its application.

ACS Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso; Manuel Díaz-Pérez; Jesús-Antonio Carrillo-Castrillo. Musculoskeletal Risks: RULA Bibliometric Review. International Journal of Environmental Research and Public Health 2020, 17, 1 .

AMA Style

Marta Gómez-Galán, Ángel-Jesús Callejón-Ferre, José Pérez-Alonso, Manuel Díaz-Pérez, Jesús-Antonio Carrillo-Castrillo. Musculoskeletal Risks: RULA Bibliometric Review. International Journal of Environmental Research and Public Health. 2020; 17 (12):1.

Chicago/Turabian Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso; Manuel Díaz-Pérez; Jesús-Antonio Carrillo-Castrillo. 2020. "Musculoskeletal Risks: RULA Bibliometric Review." International Journal of Environmental Research and Public Health 17, no. 12: 1.

Review
Published: 12 April 2020 in International Journal of Environmental Research and Public Health
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The objective of this work is to review literature, worldwide, in which the Rapid Entire Body Assessment (REBA) ergonomic assessment method was applied and count the number of times that REBA was applied together with other methods and subsequent incidence. The database used was the “Web of Science—Core Collection”. Only scientific articles and bibliographic reviews were included, analysing a total of 314 documents and selecting only 91. The use of the REBA method is indicated in terms of knowledge, country, year and journal sectors. It was most used in the knowledge areas of “Manufacturing” (24.18%), “Agriculture, forestry and fishing” (21.98%) and in “Other activities” (19.78%). One of the benefits of REBA is that it evaluates different body parts: upper limbs (arm, forearm and wrist), lower extremities, trunk and neck. It is a useful method to identify the forced postures adopted by workers to thus develop improvement measures if necessary. It is concluded that REBA method use has increased over the last decade, probably due to the digitization of knowledge. It is almost always applied in combination with other methods, and its use can be a positive indicator of company sustainability.

ACS Style

Manuel Hita-Gutiérrez; Marta Gómez-Galán; Manuel Díaz-Pérez; Ángel-Jesús Callejón-Ferre. An Overview of REBA Method Applications in the World. International Journal of Environmental Research and Public Health 2020, 17, 2635 .

AMA Style

Manuel Hita-Gutiérrez, Marta Gómez-Galán, Manuel Díaz-Pérez, Ángel-Jesús Callejón-Ferre. An Overview of REBA Method Applications in the World. International Journal of Environmental Research and Public Health. 2020; 17 (8):2635.

Chicago/Turabian Style

Manuel Hita-Gutiérrez; Marta Gómez-Galán; Manuel Díaz-Pérez; Ángel-Jesús Callejón-Ferre. 2020. "An Overview of REBA Method Applications in the World." International Journal of Environmental Research and Public Health 17, no. 8: 2635.

Journal article
Published: 19 January 2020 in Agronomy
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Greenhouse workers, despite being in a space beneath a plastic cover, may be susceptible to risks associated to ultraviolet (UV) radiation in skin and eyes. The present work focuses on experimentally analysing this risk throughout a complete year. For this purpose, a network of sensors has been designed, comprising 12 UV radiation measuring stations inside the greenhouse and one outside. It is shown that the UVI risk limit established by World Health Organization (WHO) is exceeded for some particular dates and times, thus there exist risk of damage caused by UV radiation for greenhouse workers. The results allow to identify the UV risk periods for the location studied. A diagram called “UVIgram” has been created which offers weather and UV radiation information for a particular location, for each month, and also in general for the whole year. Finally, a series of recommendations and protection measures are given, highlighting the whitening of the plastic cover of the greenhouse and an alarm system which has been designed to alert workers when UV risk exists.

ACS Style

Rubén A. García-Ruiz; Javier López-Martínez; José L. Blanco-Claraco; José Pérez-Alonso; Ángel J. Callejón-Ferre. Ultraviolet Index (UVI) inside an Almería-Type Greenhouse (Southeastern Spain). Agronomy 2020, 10, 145 .

AMA Style

Rubén A. García-Ruiz, Javier López-Martínez, José L. Blanco-Claraco, José Pérez-Alonso, Ángel J. Callejón-Ferre. Ultraviolet Index (UVI) inside an Almería-Type Greenhouse (Southeastern Spain). Agronomy. 2020; 10 (1):145.

Chicago/Turabian Style

Rubén A. García-Ruiz; Javier López-Martínez; José L. Blanco-Claraco; José Pérez-Alonso; Ángel J. Callejón-Ferre. 2020. "Ultraviolet Index (UVI) inside an Almería-Type Greenhouse (Southeastern Spain)." Agronomy 10, no. 1: 145.

Journal article
Published: 01 November 2019 in Agriculture
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Musculoskeletal disorders cause serious problems that affect workers in many sectors. The objective of this study is the ergonomic analysis of melon cultivation farmers in Almeria-type greenhouses. For this, the rapid upper limb assessment (RULA) method has been applied after carrying out a detailed process of observing the farmers’ tasks. The study shows that 65% of the postures have a very-high-risk level, 26% high, 9% average, and no posture is found with a low risk. They also show that in 69.57% of the postures, the upper limbs are less affected than the others such as the neck, trunk, and lower limbs. Measures are proposed to improve the working conditions for workers.

ACS Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso; Manuel Díaz-Pérez; Iacopo Golasi. Repetitive Movements in Melon Cultivation Workers under Greenhouses. Agriculture 2019, 9, 236 .

AMA Style

Marta Gómez-Galán, Ángel-Jesús Callejón-Ferre, José Pérez-Alonso, Manuel Díaz-Pérez, Iacopo Golasi. Repetitive Movements in Melon Cultivation Workers under Greenhouses. Agriculture. 2019; 9 (11):236.

Chicago/Turabian Style

Marta Gómez-Galán; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso; Manuel Díaz-Pérez; Iacopo Golasi. 2019. "Repetitive Movements in Melon Cultivation Workers under Greenhouses." Agriculture 9, no. 11: 236.

Journal article
Published: 01 November 2019 in Scientia Horticulturae
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ACS Style

Raúl Aroca-Delgado; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre; Manuel Díaz-Pérez. Morphology, yield and quality of greenhouse tomato cultivation with flexible photovoltaic rooftop panels (Almería-Spain). Scientia Horticulturae 2019, 257, 1 .

AMA Style

Raúl Aroca-Delgado, José Pérez-Alonso, Ángel-Jesús Callejón-Ferre, Manuel Díaz-Pérez. Morphology, yield and quality of greenhouse tomato cultivation with flexible photovoltaic rooftop panels (Almería-Spain). Scientia Horticulturae. 2019; 257 ():1.

Chicago/Turabian Style

Raúl Aroca-Delgado; José Pérez-Alonso; Ángel-Jesús Callejón-Ferre; Manuel Díaz-Pérez. 2019. "Morphology, yield and quality of greenhouse tomato cultivation with flexible photovoltaic rooftop panels (Almería-Spain)." Scientia Horticulturae 257, no. : 1.

Journal article
Published: 21 May 2019 in Agronomy
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Occupational health and safety allows the prevention of occupational diseases and accidents. Agriculture is one of the sectors in which it is important to prevent the musculoskeletal disorders that workers usually develop. The objective of this study is the evaluation of postures adopted by courgette farmers in greenhouses of the Almeria-type. OWAS (Ovako Working Posture Assessment System), an ergonomic evaluation method, is used and applied after making observations to the postures adopted by the workers who were previously video recorded. The results concluded that the four risk levels established by OWAS appeared, with 37.14% being the highest rate and belonging to risk level 2, 33.33% to risk level 1, 28.57% to risk level 3, and 0.95% to risk level 4. Therefore, depending on the severity of the postures adopted in each task, the need for changes in a short, medium, or long period of time was concluded.

ACS Style

Marta Gómez-Galán; Juana-María González-Parra; José Pérez-Alonso; Iacopo Golasi; Ángel-Jesús Callejón-Ferre. Forced Postures in Courgette Greenhouse Workers. Agronomy 2019, 9, 253 .

AMA Style

Marta Gómez-Galán, Juana-María González-Parra, José Pérez-Alonso, Iacopo Golasi, Ángel-Jesús Callejón-Ferre. Forced Postures in Courgette Greenhouse Workers. Agronomy. 2019; 9 (5):253.

Chicago/Turabian Style

Marta Gómez-Galán; Juana-María González-Parra; José Pérez-Alonso; Iacopo Golasi; Ángel-Jesús Callejón-Ferre. 2019. "Forced Postures in Courgette Greenhouse Workers." Agronomy 9, no. 5: 253.

Journal article
Published: 07 May 2019 in IEEE Sensors Journal
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Expensive ultrasonic anemometers are usually required to measure wind speed accurately. The aim of this work is overcome the loss of accuracy of a low cost hot-wire anemometer caused by changes of air temperature, by means of a probabilistic calibration using Gaussian Process Regression. Gaussian Process Regression is a non-parametric, Bayesian and supervised learning method designed to make predictions of a unknown target variable as a function of one or more known input variables. Our approach is validated against real datasets, obtaining a good performance in inferring the actual wind speed values. By performing, before its real use in the field, a calibration of the hotwire anemometer taking into account air temperature, permits that wind speed can be estimated for the typical range of ambient temperatures, including a grounded uncertainty estimation for each speed measure.

ACS Style

Ruben A. Garcia-Ruiz; Jose L. Blanco-Claraco; Javier Lopez-Martinez; Angel J. Callejon-Ferre. Uncertainty-Aware Calibration of a Hot-Wire Anemometer With Gaussian Process Regression. IEEE Sensors Journal 2019, 19, 7515 -7524.

AMA Style

Ruben A. Garcia-Ruiz, Jose L. Blanco-Claraco, Javier Lopez-Martinez, Angel J. Callejon-Ferre. Uncertainty-Aware Calibration of a Hot-Wire Anemometer With Gaussian Process Regression. IEEE Sensors Journal. 2019; 19 (17):7515-7524.

Chicago/Turabian Style

Ruben A. Garcia-Ruiz; Jose L. Blanco-Claraco; Javier Lopez-Martinez; Angel J. Callejon-Ferre. 2019. "Uncertainty-Aware Calibration of a Hot-Wire Anemometer With Gaussian Process Regression." IEEE Sensors Journal 19, no. 17: 7515-7524.

Journal article
Published: 07 March 2019 in Agronomy
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The goal of this paper is to show that logistic regression is an analytical method of interest to evaluate the marketability of different pepper (Capsicum annuum L.) cultivars. Two studies were conducted on “Italian sweet” pepper cultivars. Fruit samples were introduced in storage chambers and kept at 9 °C and 85–95% relative humidity during the study period. The fruits were evaluated individually and periodically by measuring the deterioration of fruit quality (rot, ageing, etc.). In this study, categorical explanatory variables (rot, etc.) and continuous explanatory variables (days of storage) were integrated and combined to determine the probability of marketability of the fruit. The results show that the binary logistic model is a useful statistical tool to analyse together both categorical and continuous variables in the study of the marketability of pepper cultivars.

ACS Style

Manuel Díaz-Pérez; Ángel Carreño-Ortega; José-Antonio Salinas-Andújar; Ángel-Jesús Callejón-Ferre. Logistic Regression to Evaluate the Marketability of Pepper Cultivars. Agronomy 2019, 9, 125 .

AMA Style

Manuel Díaz-Pérez, Ángel Carreño-Ortega, José-Antonio Salinas-Andújar, Ángel-Jesús Callejón-Ferre. Logistic Regression to Evaluate the Marketability of Pepper Cultivars. Agronomy. 2019; 9 (3):125.

Chicago/Turabian Style

Manuel Díaz-Pérez; Ángel Carreño-Ortega; José-Antonio Salinas-Andújar; Ángel-Jesús Callejón-Ferre. 2019. "Logistic Regression to Evaluate the Marketability of Pepper Cultivars." Agronomy 9, no. 3: 125.

Journal article
Published: 03 January 2019 in Agronomy
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The aim of this study is to establish a binary logistic regression method to evaluate and select cucumber cultivars (Cucumis sativus L.) with a longer postharvest shelf life. Each sample was evaluated for commercial quality (fruit aging, weight loss, wilting, yellowing, chilling injury, and rotting) every 7 days of storage. Simple and multiple binary logistic regression models were applied in which the dependent variable was the probability of marketability and the independent variables were the days of storage, cultivars, fruit weight loss, and months of evaluation. The results showed that cucumber cultivars with a longer shelf life can be selected by a simple and multiple binary logistic regression analysis. Storage time was the main determinant of fruit marketability. Fruit weight loss strongly influenced the probability of marketability. The logistic model allowed us to determine the cucumber weight loss percentage over which a fruit would be rejected in the market.

ACS Style

Manuel Díaz-Pérez; Ángel Carreño-Ortega; José-Antonio Salinas-Andújar; Ángel-Jesús Callejón-Ferre. Application of Logistic Regression Models for the Marketability of Cucumber Cultivars. Agronomy 2019, 9, 17 .

AMA Style

Manuel Díaz-Pérez, Ángel Carreño-Ortega, José-Antonio Salinas-Andújar, Ángel-Jesús Callejón-Ferre. Application of Logistic Regression Models for the Marketability of Cucumber Cultivars. Agronomy. 2019; 9 (1):17.

Chicago/Turabian Style

Manuel Díaz-Pérez; Ángel Carreño-Ortega; José-Antonio Salinas-Andújar; Ángel-Jesús Callejón-Ferre. 2019. "Application of Logistic Regression Models for the Marketability of Cucumber Cultivars." Agronomy 9, no. 1: 17.

Journal article
Published: 21 December 2018 in Agronomy
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Herbaceous crop yield intensification creates favourable conditions for the development of pests that intensify the attack of soil pathogens traditionally controlled by disinfectant, which are mostly prohibited and unlisted because of their toxicity. The use of grafted plants solves this problem and assists in addressing abiotic stress conditions. Within Solanaceae, specifically tomato crops (Solanum lycopersicum), the use of the splicing technique (simple and easily automated) is of special interest. This experiment attempts to present the combined influence of cutting angle and different random diameters on grafting success with the objective of detecting an optimum working range that will be applicable to automated and robotic grafting systems. An increase in the grafting angle is associated with a higher survival of grafted plants despite variations in diameter. Moreover, a threshold cutting angle is observed from which the success rate no longer increases but decreases drastically. Therefore, for a given working range with a significant cutting angle, whether the seedlings of origin are similar in diameter is not important, and this factor is more influential outside the optimal cutting angle range.

ACS Style

José-Luis Pardo-Alonso; Ángel Carreño-Ortega; Carolina-Clara Martínez-Gaitán; Ángel-Jesús Callejón-Ferre. Combined Influence of Cutting Angle and Diameter Differences between Seedlings on the Grafting Success of Tomato Using the Splicing Technique. Agronomy 2018, 9, 5 .

AMA Style

José-Luis Pardo-Alonso, Ángel Carreño-Ortega, Carolina-Clara Martínez-Gaitán, Ángel-Jesús Callejón-Ferre. Combined Influence of Cutting Angle and Diameter Differences between Seedlings on the Grafting Success of Tomato Using the Splicing Technique. Agronomy. 2018; 9 (1):5.

Chicago/Turabian Style

José-Luis Pardo-Alonso; Ángel Carreño-Ortega; Carolina-Clara Martínez-Gaitán; Ángel-Jesús Callejón-Ferre. 2018. "Combined Influence of Cutting Angle and Diameter Differences between Seedlings on the Grafting Success of Tomato Using the Splicing Technique." Agronomy 9, no. 1: 5.

Short communication
Published: 12 December 2018 in Biomass and Bioenergy
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A dendrometric and energetic characterisation of Tamarix africana L. was carried out in this study. This is an indigenous plant species in the Mediterranean area, and it can survive in semi-arid areas with saline soils and occasional floods. Owing to these characteristics, this species is a good candidate for its use in the restoration of several environments, such as the marshes. This opens up the possibility of improving the management of biomass, which can be used for obtaining economic benefits from its energetic use. For the stems, biomass volume functions were determined from their diameter and length with r2 of 0.96. For the whole plant, biomass volume functions were determined from the diameter of the projected area in the soil and the height of the plant with r2 of 0.95. For energetic characterisation, the density, higher heat value, and the composition of this wood were measured in terms of following elements: carbon, nitrogen, hydrogen, sulphur and chlorine, volatiles and ash. The determination of its composition in C allows us to evaluate the CO2 fixed by the plant during its growth. The average catchment was estimated to be 2.58 kg/plant.

ACS Style

Borja Velázquez Martí; Juan Ramón Torres Sánchez; Ángel-Jesús Callejón-Ferre; Isabel López Cortés. Dendrometric analysis of Tamarix africana L.,species of river and wetlands of the Mediterranean area. Characterisation of biomass. Biomass and Bioenergy 2018, 120, 426 -432.

AMA Style

Borja Velázquez Martí, Juan Ramón Torres Sánchez, Ángel-Jesús Callejón-Ferre, Isabel López Cortés. Dendrometric analysis of Tamarix africana L.,species of river and wetlands of the Mediterranean area. Characterisation of biomass. Biomass and Bioenergy. 2018; 120 ():426-432.

Chicago/Turabian Style

Borja Velázquez Martí; Juan Ramón Torres Sánchez; Ángel-Jesús Callejón-Ferre; Isabel López Cortés. 2018. "Dendrometric analysis of Tamarix africana L.,species of river and wetlands of the Mediterranean area. Characterisation of biomass." Biomass and Bioenergy 120, no. : 426-432.

Journal article
Published: 28 November 2018 in Phytochemistry
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We have introduced the use of multivariate NMR analysis in the development of accurate and robust prediction models, potentially arising from a correlation between soluble metabolite profiles and cell wall composition, for the determination of hemicellulose, cellulose and lignin contents in 8 species of greenhouse crop residues. The present paper demonstrates that discriminant buckets coming from a PLS-DA model in combination with linear models provide a useful and rapid tool for the determination of cell wall composition of these plant wastes. Regularized linear regression methods have also been applied to avoid overfitting, producing improved models specifically for lignin and cellulose determinations. The predictive models are also presented in a desktop application available at http://www2.ual.es/NMRMBC/solutions. To verify the rationality and reliability of the models, control experiments following generally accepted protocols have been performed and compared to our predicted values.

ACS Style

Luis Manuel Aguilera Saez; Francisco Manuel Arrabal Campos; Ángel J. Callejón-Ferre; María D. Suárez Medina; Ignacio Fernández. Use of multivariate NMR analysis in the content prediction of hemicellulose, cellulose and lignin in greenhouse crop residues. Phytochemistry 2018, 158, 110 -119.

AMA Style

Luis Manuel Aguilera Saez, Francisco Manuel Arrabal Campos, Ángel J. Callejón-Ferre, María D. Suárez Medina, Ignacio Fernández. Use of multivariate NMR analysis in the content prediction of hemicellulose, cellulose and lignin in greenhouse crop residues. Phytochemistry. 2018; 158 ():110-119.

Chicago/Turabian Style

Luis Manuel Aguilera Saez; Francisco Manuel Arrabal Campos; Ángel J. Callejón-Ferre; María D. Suárez Medina; Ignacio Fernández. 2018. "Use of multivariate NMR analysis in the content prediction of hemicellulose, cellulose and lignin in greenhouse crop residues." Phytochemistry 158, no. : 110-119.

Journal article
Published: 01 November 2018 in Safety Science
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In southeast Spain (Almería), we find the highest concentration of greenhouse crops in Europe, an agricultural sector that directly employs 55,000 people. The objective of this research was to evaluate the musculoskeletal working conditions of greenhouse workers through the standardized Nordic questionnaire. This questionnaire presents 28 multiple choice questions referring to different parts of the body. A total of 1002 questionnaires were completed, and information was collected on nine socio-demographic variables for each worker: sex, age, height, weight, surface area, cultivation, staking, greenhouse and nationality. Although the results show a high overall rate of symptoms of musculoskeletal disorders (MSDs), these findings do not mean that the workers are unable to perform agricultural tasks.

ACS Style

Laura López-Aragón; Remedios López-Liria; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso. Musculoskeletal disorders of agricultural workers in the greenhouses of Almería (Southeast Spain). Safety Science 2018, 109, 219 -235.

AMA Style

Laura López-Aragón, Remedios López-Liria, Ángel-Jesús Callejón-Ferre, José Pérez-Alonso. Musculoskeletal disorders of agricultural workers in the greenhouses of Almería (Southeast Spain). Safety Science. 2018; 109 ():219-235.

Chicago/Turabian Style

Laura López-Aragón; Remedios López-Liria; Ángel-Jesús Callejón-Ferre; José Pérez-Alonso. 2018. "Musculoskeletal disorders of agricultural workers in the greenhouses of Almería (Southeast Spain)." Safety Science 109, no. : 219-235.