17 research outputs found

    Assessment of Driver Behavior Based on Machine Learning Approaches in a Social Gaming Scenario

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    The estimation of user performance analytics in the area of car driver performance was carried out in this paper. The main focus relies on the descriptive analysis with our approaches emphasizing on educational serious games, in order to improvise the driver\u2019s behavior (specifically green driving) in a pleasant and challenging way. We also propose a general Internet of the Things (IoT) social gaming platform (SGP) concept that could be adaptable and deployable to any kind of application domain. The social gaming scenario in this application enables the users to compete with peers based on their physical location. The efficient drivers will be awarded with virtual coins and gained virtual coins can be used in real world applications (such as purchasing travel tickets, reservation of parking lots, etc.). This research work is part of TEAM project co-funded within the EU FP7 ICT research program

    Partial and exhaustive hydrolysis of lanthanide N,N-dialkylcarbamato complexes. A viable access to lanthanide mixed oxides

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    Partial hydrolysis (H2O/Ln molar ratio = ¼) of lanthanum di-iso-propylcarbamato complex, [La(O2CNiPr2)3], 1, afforded the tetranuclear μ-oxo derivative [La4O(O2CNiPr2)10], 2, which was structurally characterized by single crystal X-Ray diffraction studies. The carbonatocarbamato derivative of lanthanum, [La4(CO3)(O2CNBu2)10], 3, was prepared by extraction of lanthanum ions from aqueous solution into heptane by the NHBu2/CO2 system. Partial hydrolysis (H2O/Ln molar ratio = ½ ) of N,N-di-iso-propylcarbamato complexes of neodymium, europium, gadolinium and terbium, [Ln(O2CNiPr2)3], yielded the derivatives [Ln2(CO3)(O2CNiPr2)4] (Ln = Nd, 4, Eu, 5, Gd, 6). Exhaustive hydrolysis of [Ln(O2CNR2)3] (Ln = Nd, Tb, R = Bu; Ln = Eu, Gd, R = iPr, Bu) produced hydrated lanthanide carbonates, Ln2(CO3)3 n H2O. For sake of comparison with a block d metal, the exhaustive hydrolysis of two copper(II) carbamato complexes, [Cu(O2CNEt2)2(NHEt2)]2 and [Cu(O2CNiPr2)2], was carried out with formation in both cases of the hydrated basic carbonate Cu2(OH)2(CO3)nH2O. The exhaustive hydrolysis of mixtures of cerium and lanthanum or cerium and terbium N,N-dibutylcarbamato complexes allowed the preparation of mixed oxides containing the two metals in the desired molar ratio, via the intermediate formation of the corresponding mixed carbonates

    A convenient preparation of La2CuO4 from molecular precursors

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    Exhaustive hydrolysis of a mixture of [La4(CO3)(O2CNBu2)10] and [Cu(O2CNBu2)(py∗)2] (py∗ = 4-dimethylamino pyridine) in molar ratio 1/2 corresponding to a La/Cu molar ratio 2/1 was carried out in toluene at room temperature. The carbamato derivatives of lanthanum and copper can be easily prepared by extraction of the metal ions from aqueous solution into heptane by the NHBu2/CO2 system, according to a method previously reported. The copper precursor was selected among a number of derivatives in respect of its easy tractability. The tetragonal modification T’ of La2CuO4 was obtained by treatment at 600 °C of the intermediate mixed carbonate. The thermal treatment of T’-La2CuO4 at 850 °C, followed by cooling down to room temperature, afforded the orthorhombic modification of the mixed oxide

    Endoscopic-assisted non surgical periodontal therapy: radiographic evaluation of infrabony defect response. A pilot study.

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    The goal of non surgical therapy is to remove subgingival biofilm and a minimally invasive endoscopic treatment of subgingival areas allows a significant improvement of deposits removal. The aim of this study is to analyze the radiographic response of infrabony defects after non surgical periodontal therapy performed with a periodontal endoscope. Twenty-three sites, belonging to 13 patients (7 females and 6 males, mean ± SD = 50±11 years), were analyzed after endoscopic-assisted* non surgical periodontal therapy. All patients were affected by chronic periodontitis, with moderate (probing depth – PD: 5-6 mm) or deep (PD:≥7mm) pockets and vertical infrabony defects affecting single – rooted teeth. All sites were treated with endoscopic-assisted scaling and root planing (S-RP) and standardized x-rays were taken before and one year after the treatment. Radiographs were scanned and evaluated using an image analyzer. The following measurements were taken: the distance between interproximal cementoenamel junction (CEJ) and base of the defect (BD), the distance between bone crest (BC) and BD, the angle of the defect and the Infrabony Defect Fill (IDF) (measured as the difference between initial and final vertical distance from CEJ to BD). Results, one year after the procedure, show a statistically significant (p=0.0001) mean reduction of CEJ-BD and BC-BD distances, respectively 1.13 (0.68-1.59) mm and 0.82 (0.42-1.22) mm, and a statistically significant (p=0.03) mean increase of the defect angle: 6.29 mm (0.67-11.92). Moreover, the mean value of IDF fill was 1.14 ± 0.22 mm, denoting an infrabony defect fill. Bone remodeling, occurred after non surgical endoscopic-assisted periodontal therapy, led to a partial fill of the defect and an increase of the defect angle, due to a remineralization of the most apical part of the defect. Taking advantage of the regenerative potential present in the area, the vertical defect partially turned into a horizontal defect. This procedure brings predictable improvements in the radiographic parameters of infrabony defects versus S-RP alone. Periodontal endoscopic-assisted non surgical therapy achieves a statistically significant decrease of the vertical component of the bony defects and the opening of the defect angle. This procedure seems to be a reliable treatment for patients with a medical history or other psychological/economical concerns limiting a surgical approach

    Dibromo–Isonitrile and N-acyclic Carbene Complexes of Platinum(II): Synthesis and Reactivity

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    A series of dibromo-N-acyclic (NAC) carbene complexes of platinum(II) were synthesized, starting from trans-[Pt(μ-Br)Br(PPh3)]2 and according to a protocol previously optimized for the preparation of analogous chlorinated compounds. In the first step of the synthesis, the ring opening of the dinuclear precursor was carried out using suitable isonitrile ligands, while the following step consisted of the addition of N,N-diethylamine to the products obtained in the first step. The two reactions were separately investigated, and attention was given to the differences between brominated and chlorinated systems

    Advances in Optical Nanowriting on Nematic Azobenzene Polymers

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    Advances in Optical Nanowriting on Nematic Azobenzene Polymer
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