Privacy-Preserving Data Publishing for Multiple Numerical Sensitive Attributes

Anonymized data publication has received considerable attention from the research community in recent years. For numerical sensitive attributes, most of the existing privacy-preserving data publishing techniques concentrate on microdata with multiple categorical sensitive attributes or only one numerical sensitive attribute. However, many real-world applications can contain multiple numerical sensitive attributes. Directly applying the existing privacy-preserving techniques for single-numerical-sensitive-attribute and multiple-categorical-sensitive- attributes often causes unexpected disclosure of private information. These techniques are particularly prone to the proximity breach, which is a privacy threat specific to numerical sensitive attributes in data publication, in this paper, we propose a privacy-preserving data publishing method, namely MNSACM, which uses the ideas of clustering and Multi-Sensitive Bucketization （MSB） to publish microdata with multiple numerical sensitive attributes. We use an example to show the effectiveness of this method in privacy protection when using multiple numerical sensitive attributes.

Metal-enhanced fluorescence of graphene oxide by palladium nanoparticles in the blue-green part of the spectrum

Graphene oxide（GO） has a wide fluorescence bandwidth,which makes it a prospective candidate for numerous applications.For many of these applications,the fluorescence yield of GO should be further increased.The sp2-hybridized carbons in GO confine the π-electrons.Radiative recombination of electron-hole pairs in such sp2 clusters is the source of fluorescence in this material.Palladium nanoparticles are good catalysts for sp2 bond formations.We report on the preparation of GO,palladium nanoparticles and their nanocomposites in two different solvents.It is shown that palladium nanoparticles can considerably enhance the intrinsic fluorescence of GO in the blue-green part of the visible light spectrum.Fluorescence enhancement has been attributed to the catalytic role of palladium nanoparticles in increasing the number of sp2 bonds of GO with the molecules of the surrounding media.It is shown that palladium nanoparticles could be the nanoparticle of choice for fluorescence enhancement of GO because of their catalytic role in sp2 bond formation.

Enhanced Optical Transmission and Sensing of a Thin Metal Film Perforated with a Compound Subwavelength Circular Hole Array

We proposc and numerically investigate the optical transmission behaviors of a subwavelength metal film perforated with a two-dimensional square array of compound circular holes.Enhanced optical transmission is obtained by using the finite-difference time-domain（FDTD）method,which can be mainly attributed to the excitation and coupling of localized surface plasmon resonances（LSPRs） and surface plasmon polaritons（SPPs）,and Fano Resonances.The redshift of the transmission peak can be achieved by enlarging the size and number of small holes,the environmental dielectric constant.These indicate that the proposed structure has potential applications in integrated optoelectronic devices such as plasmonic filters and sensors.