Repository UNSAP (Universitas Sebelas April)
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1145 research outputs found
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Du plan directeur communal au plan médiateur régional, pour un développement cohérent des infrastructures et une valorisation optimale de la ressource
CRE
Geomechanical characterisation of cataclastic rocks : experience from the Cleuson-Dixence Project
LMRLMSRoche
Methodology, measurement and analysis of flow table update characteristics in hardware openflow switches
LACA
An experimental method of characterizing nonli-near twoports and its application to micro-wave class-C transistor amplifier design
LEM
Experimental demonstration of the slow group velocity of light in two-dimensional coupled photonic crystal microcavity arrays
We recently proposed two-dimensional coupled photonic crystal microcavity arrays as a route to achieve a slow-group velocity of light (flat band) in all crystal directions. In this letter we present the experimental demonstration of such structures with a measured group velocity below 0.008c and discuss the feasibility of applications such as low-threshold photonic crystal lasers with increased output powers, optical delay components, and sensors. (C) 2005 American Institute of Physics.BIO
Compound fabrication for in-liquid selective Self-Assembly
Passing from millimeter to micrometer scale, the traditional pick and place method for assembling large amount of compounds be- comes difficult and time consuming. At micrometer scale it is then very important to have other assembling methods. This work presents the ability to perform selective and pairwise serial self-assembly of more than 500 immersed compounds, using hydropho- bic interaction [1]. To show the selectivity of the assembly, bicolor 100 μm SU-8 filled cylinders have been fabricated by photolithogra- phy techniques. Inducing selective hydrophilic interaction, a yield higher than 60% of correctly assembled parts has been achieved.LMIS
Compressive Sensing of Localized Signals: Application to Analog-to-Information Conversion
Compressed sensing hinges on the sparsity of signals to allow their reconstruction starting from a limited number of measures. When reconstruction is possible, the SNR of the reconstructed signal depends on the energy collected in the acquisition. Hence, if the sparse signal to be acquired is known to concentrate its energy along a known subspace, an additional “rakeness” criterion arises for the design and optimization of the measurement basis. Formal and qualitative discussion of such a criterion is reported within the framework of a well-known Analog-to-Information conversion architecture and for signals localized in the frequency domain. Non-negligible inprovements are shown by simulation.IS
Polymerization of the new double-charged monomer bis-1,3(N,N,N trimethylammonium dicyanamide)-2-propylmethacrylate and ionic conductivity of the novel polyelectrolytes
The achievement of high ionic conductivity in single-ion conducting polymer electrolytes is one of the important aims for various electrochemical devices including modern lithium batteries. One way to enhance the ionic conductivity in polyelectrolyte systems is to increase the quantity of charge carriers in each monomer unit. Highly charged poly(bis-1,3(N,N,N-trimethylammonium)-2-propylmethacrylate) with one of the most conducting anions, namely dicyanamide, was prepared via free radical bulk polymerization or using ionic liquids as reaction medium. The cationic polymers of the double-charged monomer have molar masses up to equation image = 1,830,000 g/mol and the ionic conductivity equal to 5.51 × 10−5 S/cm at 25°C. The film forming ability, crystallinity, thermal stability, and glass transition temperatures of the new polymeric ionic liquids obtained from detailed studies are presentedLMR
Image-guided Surgical Microscope
We present an image-guided microscope system using augmented reality image overlays added onto one of the views of the operating microscope. With this system, segmented objects, outlines of risk regions or access pathways, previously extracted from preoperative tomographicimages can be directly displayed as augmented reality overlays on the microscope image.LSR