1,354,892 research outputs found
LA SECONDA VITA DELLO STERI: 1458-1535-The second life of the Steri: 1458-1535
No full textProgetto, costruzione, mutazioni: la storia di
un’architettura sperimenta molte vite; nuove
generazioni, differenti esigenze e usi ne mutano
presupposti e condizioni iniziali. Lo Steri dei
Chiaromonte a Palermo ha attraversato vicende
secolari. I saggio propone un racconto della genesi e
dell’inizio di un processo (tra XIV e XVI secolo)
ancora in corso, la fase meno nota e documentabile
di un imponente edificio nel cuore di una grande città
del Mediterraneo.Design, construction and transformations: the history
of a work of architecture has many lives. New
generations, and different needs and uses change the
initial assumptions and conditions. The Steri, the
palace of the Chiaramonte family in Palermo, has
crossed the centuries. The essay provides an account of the
genesis and beginning of a process spanning from the
fourteenth to the sixteenth century that is still in
progress and which represents the lesser known and
documented period of an imposing building in the
heart of a great Mediterranean city
A trick in steri strips application: the zig-zag pattern
No full textA trick in steri strips application: the zig-zag patter
A local search method for continuous global optimization
No full textA large number of algorithms introduced in the literature
to find the global minimum of a real function rely on iterative executions of searches of a local minimum. Multistart, tunneling and some versions of simulated annealing are methods that produce well-known procedures. A crucial point of these algorithms is to decide whether to perform or not a new local search. In this paper we look for the optimal probability value to be set at each iteration so
that by moving from a local minimum to a new one, the average number of function evaluations evals is minimal. We find that this probability has to be 0 or 1 depending on the number of function
evaluations required by the local search and by the size of the level set at the current point. An implementation based on the above result is introduced. The values required to calculate evals are estimated from the history of the algorithm at running time. The
algorithm has been tested both for sample problems constructed by the GKLS package and for problems often used in the literature. The outcome is compared with recent results
Improving Firms’ Decisions of Strategic Distribution Partnerships Through a New Artificial Neural Networks Approach
No full textThe ‘Universe in a Box’: a hands-on activity to introduce primary school students to cosmology
No full textPhysics Education Research shows that active learning and interdisciplinary strategies can enhance students’ engagement in physics. In primary school, the implementation of active learning pedagogies such as Inquiry-Based Science Education aims to encourage students’ autonomy and participation in their learning process. Indeed, active learning promotes pupils’ creativity,
helping them develop the skills that increasingly determine their future employability and personal development, introducing them to STEM. In this regard, stories and storytelling can help improve teaching and students’ physics learning. Telling the Universe and its history can afford this job. The Big Bang, the Cosmic Microwave Background, and the formation of stars and planets are valuable tools for introducing primary school students to physics and the scientific method while fostering their curiosity about science. Moreover, it helps the instructors monitor the development of
peculiar misconceptions on these topics, preventing them from fully understanding physics phenomena. In this paper, we present an innovative short-term program (one session of three hours) called ‘The Universe in a Box’ to introduce primary school students (grades 4–5, ages 9–10) to cosmology. We illustrate our design and the educational purposes of the program and present the outcomes from its implementation in five different laboratories in Sardinia, Italy, from 2022 to 2024 (60 students involved). This work can furnish a theoretical and methodological guide for primary school teachers and instructors on integrating formal curricula with contemporary physics topics using interdisciplinary approaches, engaging their students in STEAM (STEM plus Arts)
The Mathematical description of the lactation curve of ruminants: issues and perspectives
No full textTest day records of milk production traits in the main livestock species reared for milk production were analyzed with several empirical mathematical models, with aim to identify suitable functions to fit different types of lactation curve shape. In the first chapter the modelling of extended lactations in dairy cows were analyzed. Several empirical mathematical models currently used to fit lactations with a function developed specifically for long patterns were compared. The second experimental contribution has approached a common problem when small ruminant lactation curves are modelled. In the specific case of the Sarda goat, the partial overlapping of altitude of location of flock with the partition into three different genetic subpopulation represents a further peculiarity. The third study was a investigation on the peculiar situation of the Massese breed ewes, where the intensification of reproductive cycle results in an alternate sequence of long and short lactations for each ewe. A frequent issue in modelling lactation curves is represented by relevant occurrence of atypical shapes, i.e. those that lacks of the peak yield and consist of a monotonically decreasing pattern
A class of nonlinear implicit Cauchy problems integrated by Groebner's method
No full textThis paper deals with second order Cauchy problems in implicit form, which can be reduced to evolution problems, whose integration is performed, according to the Groebner's method, by means of generalized Lie series
Using storytelling to foster the teaching and learning of gravitational waves physics at high-school
No full textStudies in Physics Education Research show that interdisciplinary approaches in education foster students’ motivation, creativity, curiosity, and interest in physics. We discuss their features and potential role in bringing contemporary physics topics to high school and how to use them to integrate formal educational programs. We make an explicit example of the use of storytelling and theatrical techniques to introduce secondary school students to black holes and gravitational wave topics. The Educational Division of the Physics Department at the University of Cagliari designed the activity. Participants were 200 high-school students (17 to 19 years old) from five schools (scientific, humanities) in Sardinia. Through a research questionnaire, we measure the efficacy of using artistic tools to communicate and teach the proposed subjects. We collected 76 answers. Results show that our methodology helps introduce students to contemporary physics themes, fostering their interest and learning of such content. Students from the humanities significantly appreciated the use of poetry and artistic tools more than their scientific peers. Finally, we discuss the potentiality of our approach in orientating students towards a STEAM (STEM and Arts) caree
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