Graphene based nano hybrids for high performance devices

Graphene has been drawing much attention in these recent years in the research field, due to its superior material properties and potential for many practical applications. I have been working on synthetizing, characterizing and testing graphene based nano-hybrid materials for electronic devices in the field of flexible printed electronics and energy storage devices. In this dissertation, the preparation, characterization and test of graphene based nano-hybrid materials will be presented and discussed. Starting from investigating environmentally friendly and safer synthesis and reduction techniques to obtain few layer Graphene and reduced Graphene Oxide, to UV-induced photo-polymerization of Reduced Graphene Oxide (rGO)/polymer hybrids and their potential application as a conductive ink for flexible printed electronic devices by tuning the property of polymers. The synthesis and applications of 3D nanostructured rGO/metal oxide hybrids as a high capacity electrode for electrochemical energy storage device such as supercapacitors will be then presented. Intercalation of sodium (Na+) ions into the electrode will be discussed along with their electrochemical performances. In conclusion, possible future methods to combine the results obtained for a 3D printed all solid state flexible graphene based supercapacitor will be proposed

Evaluate children’s User eXperience with AttrakDiff method: USiena experience

The objective of this paper is to share the results of a pilot study conducted by the University of Siena in collaboration with the “Renato Fucini” Comprehensive Institute. The aim has been to evaluate the User eXperience of 96 children using two different educational formats, the Frontal Teaching and the Multimedia Teaching. Six between subjects experiments have been carried out. At the end of each experiment a multiple-choice questionnaire (learning level evaluation) and the AttrakDiff questionnaire (UX evaluation) have been used. On the values obtained from multiple-choice questionnaire the Wilcoxon-Mann-Whitney test has been applied. The study results highlighted two aspects: the learning level of Multimedia Teaching format has been slightly better than Frontal Teaching format, the UX related to Multimedia Teaching format has been basically similar for all children while the own teacher presence has influenced the Frontal Teaching format UX

Eksistensi Lagu Islami Dalam Pendidikan Anak Usia Dini

Islamic education iIslamic education is defined as the process of transferring learning knowledge that is conveyed to students by educators and can grow and develop the potential of students to achieve life goals. To take advantage of the golden age of PAUD, educators adopt inspiring and fun learning methods, namely block play, memorization, role-playing, card games, experimentation, singing, and playing music. The method used in this research is qualitative method. The type of qualitative research used by the researcher is a case study, which is an in-depth exploration of a case, collecting comprehensive information using different data collection procedures based on time estimates. Childhood usually begins with parents sending them to PAUD, so it is not surprising that they enter higher schools. In PAUD schools, singing is often taught because children can have fun and will understand the songs taught by educators. Learning through play can shape children's character and realize all their teachings, including morals. Islamic songs are the result of innovative learning methods, the use of very relevant Islamic songs is used as an effort to optimize character formation in students. The Islamic song learning system is flexible and unlimited because it is done together in a fun atmosphere and many children enjoy learning activities such as singing, clapping, body expressions and other activities.s defined as the process of transferring learning knowledge that is conveyed to students by educators and can grow and develop the potential of students to achieve life goals. To take advantage of the golden age of PAUD, educators adopt inspiring and fun learning methods, namely block play, memorization, role-playing, card games, experimentation, singing, and playing music. The method used in this research is qualitative method. The type of qualitative research used by the researcher is a case study, which is an in-depth exploration of a case, collecting comprehensive information using different data collection procedures based on time estimates. Childhood usually begins with parents sending them to PAUD, so it is not surprising that they enter higher schools. In PAUD schools, singing is often taught because children can have fun and will understand the songs taught by educators. Learning through play can shape children's character and realize all their teachings, including morals. Islamic songs are the result of innovative learning methods, the use of very relevant Islamic songs is used as an effort to optimize character formation in students. The Islamic song learning system is flexible and unlimited because it is done together in a fun atmosphere and many children enjoy learning activities such as singing, clapping, body expressions and other activities.   Abstrak : Pendidikan Islam didefinisikan sebagai proses transfer ilmu pembelajaran yang disampaikan kepada peserta didik oleh pendidik serta dapat menumbuhkan dan  meningkatkan bakat peserta didik dalam memenuhi tujuan kehidupan. Untuk menmqmfaatkan masa keemasan PAUD, pendidik mengadopsi metode pembelajaran yang inspiratif dan menyenangkan yaitu block play, hafalan, role-playing, card play, eksperimentasi, bernyanyi, dan bermain musik. Metode yang digunakan oleh penelitian ini yaitu metode kualitatif. Studi kasus merupakan jenis penelitian yang digunakan, yaitu eksplorasi mendalam tentang suatu kasus, mengumpulkan informasi yang komprehensif dengan menggunakan  prosedur pengumpulan data yang berbeda berdasarkan perkiraan waktu. Masa kanak-kanak biasanya dimulai dengan orang tua menyekolahkan mereka ke Pendidikan Anak Usia Dini, sehingga tidak kaget jika mereka masuk ke sekolah yang lebih tinggi. Di sekolah Pendidikan anak usia dini, metode yang sering diberikan kepada peserta didik yaitu menyanyi, karena anak usia dini lebih bersenang-senang dan dengan mudah memahaminya. Belajar melalui bermain dapat membentuk karakter anak dan mewujudkan segala ajarannya, termasuk akhlak. Lagu islami merupakan hasil dari metode pembelajaran yang inovatif, penggunaan lagu islami yang sangat relevan  digunakan sebagai upaya untuk mengoptimalkan pembentukan karakter pada siswa. Sistem pembelajaran lagu Islami bersifat fleksibel dan tidak terbatas karena dilakukan secara bersama-sama dalam suasana yang menyenangkan dan banyak anak yang menikmati kegiatan belajar seperti menyanyi, tepuk tangan, ekspresi tubuh dan aktivitas lainnya

Maireana brevifolia (chenopodiaceae), un xenófito australiano establecido recientemente en el sureste de Marruecos

The presence of the xenophyte plant Maireana brevifolia is reported for the first time in Morocco. The species is native to Australia and is currently colonizing a disturbed saline oasis in Skoura, province of Ouarzazate, though it might likely occur elsewhere in similar habitats. A brief illustrated description and precise geographical Moroccan location of Maireana brevifolia are presented. The voucher specimen is deposited in the National Herbarium (RAB) of Morocco, at the Scientific Institute of Rabat.Se cita por primera vez en Marruecos la presencia del xenófito Maireana brevifolia. Esta especie es nativa de Australia y actualmente está colonizando un oasis salino alterado en Skoura, provincia de Ouarzazate, aunque probablemente pueda encontrarse en otros hábitats similares. Se presenta una breve descripción ilustrada y ubicación geográfica precisa de Maireana brevifolia en Marruecos. Un pliego testigo se ha depositado en el Herbario Nacional de Marruecos (RAB), en el Instituto Científico de Rabat

Mobile learning: a comparison of knowledge acquisition between two mobile course models

Mobile has become the preferred way for internet access. This important change has generated transformations “equally important” in education and teaching fields, significantly increasing the importance of mobile learning. Using the User-Centered Design and Participatory Planning methodologies, 20 university students were involved in the mobile course model design, defined as “USiena model”. The objective of this research was to compare the model course designed with a model course used by other institutions present in iTunesU platform, hereinafter described as a “Sparring model”. Using the experimental method, 32 students were involved in a “pilot study” built to evaluate the learning level of both models, comparing the knowledge acquired by learners. The experimental hypothesis was that the USiena model, compared to the Sparring model, would facilitate the contents transmission to learners improving learning.  The results of the experimentation confirmed our hypothesis.Mobile learning: una comparazione sull’acquisizione della conoscenza utilizzando due modelli di corsoIl mobile è diventato la modalità privilegiata per l’accesso a internet. Questo importante cambiamento ha generato trasformazioni “altrettanto importanti” nel campo dell’istruzione e dell’insegnamento, facendo aumentare sensibilmente l’importanza dell’apprendimento in mobilità. Utilizzando le metodologie dello User-Centered Design e del Participatory Planning, 20 studenti universitari sono stati coinvolti nella progettazione di un modello di corso mobile, da ora in avanti definito come “modello USiena”. L’obiettivo della presente ricerca era di comparare il modello di corso che è stato progettato, con uno dei modelli di corso utilizzati da altre istituzioni presenti nella piattaforma iTunesU, di seguito descritto come “modello Sparring”. Utilizzando il metodo sperimentale, 32 studenti sono stati coinvolti in uno “studio pilota” costruito per valutare il livello di apprendimento di entrambi i modelli, comparandone l’acquisizione della conoscenza da parte dei discenti. L’ipotesi sperimentale era che il modello USiena, rispetto al modello Sparring, facilitasse la trasmissione dei contenuti verso i discenti migliorando l’apprendimento. I risultati della sperimentazione hanno confermato la nostra ipotesi

Promesse elettorali e benessere: un esperimento naturale in India

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Progettazione e valutazione di un format per il mobile learning: il caso iTunesU Siena

L’attività di dottorato si inserisce all’interno di un progetto dell’Università di Siena del 2012 che prevedeva la progettazione e l’implementazione di una piattaforma a supporto dell’attività didattica e dell’attività di orientamento, la progettazione di un format “mobile” (da utilizzarsi per la progettazione del corso), la valutazione dell’apprendimento utilizzando il format progettato, l’implementazione di un corso mobile prototipale. All’interno di questo progetto l’autore: ha collaborato alla progettazione e all’implementazione della piattaforma, ha prodotto diversi contenuti multimediali (attualmente 36 collezioni e 499 contenuti), ha progettato un format per la fruizione di contenuti didattici in mobilità (definito nella tesi format “USiena”), ha analizzato i format utilizzati dalle prime quindici università al mondo presenti su iTunesU, sempre nell’ottica di una fruizione di contenuti in mobilità (definiti nella tesi format “Sparring”), ha prodotto ventinove moduli prototipali (utilizzati nelle sperimentazioni), ha provveduto a valutare l’apprendimento utilizzando il format progettato, comparando l’acquisizione della conoscenza da parte dei discenti sulla base dei vari format analizzati in precedenza (“USiena” vs. “Sparring”)