Compendium logica in quatuor partes, 1701

Small hardcover notebook containing a manuscript copy of William Brattle's abstract of René Descartes' "Compendium Logicae" copied in Latin by Harvard student Joseph Metcalf between April 29th and May 7th, 1701. The text includes an ornately decorated title page and drawings and notes on the flyleaves. The covers are unattached. The inside front cover is inscribed: "Joseph Burbeen Walker 1845."

Fuzzy control of a water pump for an agricultural plant growth system

At the present time there is a high pressure toward the improvement of all the production processes. Those improvements can be sensed in several directions in particular those that involve energy efficiency. The definition of tight energy efficiency improvement policies is transversal to several operational areas ranging from industry to public services. As can be expected, agricultural processes are not immune to this tendency. This statement takes more severe contours when dealing with indoor productions where it is required to artificially control the climate inside the building or a partial growing zone. Regarding the latter, this paper presents an innovative system that improves energy efficiency of a trees growing platform. This new system requires the control of both a water pump and a gas heating system based on information provided by an array of sensors. In order to do this, a multi-input, multi-output regulator was implemented by means of a Fuzzy logic control strategy. Presented results show that it is possible to simultaneously keep track of the desired growing temperature set-point while maintaining actuators stress within an acceptable range.

Il cielo stellato sopra di me e la legge morale in me. Osservazioni sul sublime e sulla logica dell’irrazionale in Kant

«Duas coisas enchem o ânimo de uma admiração e veneração sempre nova e tanto mais crescente quanto mais frequente e mais demoradamente a reflexão se ocupa delas: o céu estrelado acima de mim e a lei moral em mim.” Com estas famosíssimas palavras escritas no papel e incisas em pedra, Immanuel Kant conclui a Crítica da razão prática. No presente artigo pretendo mostrar como esta frase está estreitamente ligada: 1) à doutrina kantiana do sublime e 2) à fundação da lógica do irracional na Critica do Juízo.