@misc{CamposManriqueDorneanuetal., author = {Campos, Jean C. and Manrique, Jose and Dorneanu, Bogdan and Ipanaqu{\´e}, William and Arellano-Garc{\´i}a, Harvey}, title = {A smart decision framework for the prediction of thrips incidence in organic banana crops}, series = {Ecological Modelling}, volume = {473}, journal = {Ecological Modelling}, issn = {1872-7026}, doi = {10.1016/j.ecolmodel.2022.110147}, abstract = {Various pests which diminish the quality of the fruit have a big influence on the organic banana production in the Piura region of Peru (and not only) and prevent it from being sold on the international market. In this study, a framework for facilitating the prediction of the pest incidence in organic banana crops is developed. To achieve this, a data acquisition system with smart sensors is implemented to monitor the meteorological variables that influence the growth of the pests. The proposed framework is utilised for the assessment of various mathematical representations of the pest incidence. These models are adapted from population growth functions and built in such way as to predict the behaviour of the insects at non-regular time intervals. A hybrid approach, combining mechanistic and data-based methods is utilised for the development of the models. Both linear and nonlinear dynamic relationships with the temperature are assumed. The results show that nonlinear model representations have greater accuracy (a fit index of more than 70\%), which provides a basis for improving pest management actions on the organic banana farms.}, language = {en} } @misc{MerinoCarrascoDorneanuetal., author = {Merino, Manuel and Carrasco, Laura and Dorneanu, Bogdan and Manrique, Jose and Menzhausen, Robert and Arellano-Garc{\´i}a, Harvey}, title = {Control Strategies for a Vapour Compression Refrigeration System Used in Mango Exports: An Alternative to Traditional on-Off Controllers}, series = {AIChE Annual Meeting}, journal = {AIChE Annual Meeting}, isbn = {978-0-8169-1114-1}, abstract = {ropical fruits are important products on the global market. The change to a healthier nutrition, the development of new products and great availability led to a rise in their consumption during the last decade [1-2]. Due to their perishable nature they are stored at lower temperature. To achieve a rapid and efficient decrease in product temperature, refrigeration systems are employed, using vapor compression refrigeration plants. They consist of four main components: the compressor, the condenser, the expansion valve and the evaporator. Within the system a refrigerant is circulating. Though designed to satisfy maximum load, these plants usually work at part-load for much of their life, generally regulated by on/off cycles of the compressor, working at nominal frequency of 50 Hz [3]. The high cost involved in developing cold storage or controlled atmosphere storage is a pressing problem in several developing countries [4]. This contribution presents development and comparison of various strategies for the control of a refrigeration plant used for fruit cooling. The starting point is a model of the plant which is able to simulate both the chamber and the fruit temperature. The model is based on energy balances for each section of the refrigeration system and the fruits.}, language = {en} }