Scaling laws for the elastic scattering amplitude

The partial differential equation for the imaginary part of the elastic scattering amplitude is derived. It is solved in the black disk limit. The asymptotical scaling behavior of the amplitude coinciding with the geometrical scaling is proved. Its extension to preasymptotical region and modifications of scaling laws for the differential cross section are considered.Comment: 6 p. arXiv admin note: substantial text overlap with arXiv:1206.547

Limiting fragmentation in heavy-ion collisions and percolation of strings

The observed limiting fragmentation of charged particle distributions in heavy ion collisions is difficult to explain as it does not apply to the proton spectrum itself. On the other hand, string percolation provides a mechanism to regenerate fast particles, eventually compensating the rapidity shift (energy loss) of the nucleons. However a delicate energy-momentum compensation is required, and in our framework we see no reason for limiting fragmentation to be exact. A prediction, based on percolation arguments, is given for the charged particle density in the full rapidity interval at LHC energy $(\sqrt s =5500 GeV)$.Comment: 9 pages, 2 figures (2 eps files), late

Transport Coefficient to Trace Anomaly in the Clustering of Color Sources Approach

From our previously obtained shear viscosity to entropy density ratio ($\eta/s$) in the framework of clustering of color sources (Color String Percolation Model: CSPM), we calculate the jet quenching parameter $\hat {q}$ and trace anomaly $\Delta = (\varepsilon -3\it p)/T^{4}$ as a function of temperature. It is shown that the scaled $\hat {q}/T^{3}$ is in agreement with the recent JET Collaboration estimates. The inverse of $\eta/s$ is found to represent $\Delta$. The results for $\Delta$ are in excellent agreement with Lattice Quantum Chromo Dynamics (LQCD) simulations. From the trace anomaly and energy density $\epsilon$, the equation of state is obtained as a function of temperature and compared with LQCD simulations. It is possible that there is a direct connection between the $\eta/s$ and $\Delta$. Thus the estimate of transport coefficient $\eta/s$ provides $\hat {q}$ and $\Delta$ as a function of temperature. Both $\Delta$ and $\eta/s$ describe the transition from a strongly coupled QGP to a weakly coupled QGP.Comment: 5 pages, 4 figures, Accepted for publication in Phys. Rev. C. arXiv admin note: text overlap with arXiv:1501.0152

Percolation of strings and the first RHIC data on multiplicity and tranverse momentum distributions

The dependence of the multiplicity on the number of collisions and the transverse momentum distribution for central and peripheral Au-Au collisions are studied in the model of percolation of strings relative to the experimental conditions at RHIC. The comparison with the first RHIC data shows a good agreement.Comment: RevTeX, 11 pages, 4 eps figures included using epsfi

Addressing Intimate Partner Violence Among Female Clients Accessing HIV Testing and Counseling Services: Pilot Testing Tools in Rakai, Uganda.

The World Health Organization recommends that HIV counseling and testing (HCT) programs implement strategies to address how intimate partner violence (IPV) influences women's ability to protect themselves from and seek care and treatment for HIV infection. We discuss the process used to adapt a screening and brief intervention (SBI) for female clients of HCT services in Rakai, Uganda-a setting with high prevalence of both HIV and IPV. By outlining our collaborative process for adapting and implementing the SBI in Rakai and training counselors for its use, we hope other HCT programs will consider replicating the approach in their settings

Cross-Domain Deep Face Matching for Real Banking Security Systems

Ensuring the security of transactions is currently one of the major challenges that banking systems deal with. The usage of face for biometric authentication of users is attracting large investments from banks worldwide due to its convenience and acceptability by people, especially in cross-domain scenarios, in which facial images from ID documents are compared with digital self-portraits (selfies) for the automated opening of new checking accounts, e.g, or financial transactions authorization. Actually, the comparison of selfies and IDs has also been applied in another wide variety of tasks nowadays, such as automated immigration control. The major difficulty in such process consists in attenuating the differences between the facial images compared given their different domains. In this work, in addition to collecting a large cross-domain face dataset, with 27,002 real facial images of selfies and ID documents (13,501 subjects) captured from the databases of the major public Brazilian bank, we propose a novel architecture for such cross-domain matching problem based on deep features extracted by two well-referenced Convolutional Neural Networks (CNN). Results obtained on the dataset collected, called FaceBank, with accuracy rates higher than 93%, demonstrate the robustness of the proposed approach to the cross-domain face matching problem and its feasible application in real banking security systems

Evaluasi Kebijakan Nasionalisasi Pertanahan

Evaluasi terhadap implementasi UU No.1/2003 di Timor Leste. Tujuan penelitian ini untuk mendeskripsikan, mengevaluasi dan menganalisis proses nasionalisasi eks-tanah dan bangunan yang ditinggalkan oleh pemiliknya dan pemerintahan Indonesia dan Portugis yang berkaitan dengan hak kepemilikan. Sebagai akibat adanya sertifikat hak atas tanah yang telah diterbitkan oleh dua pemerintahan yang berbeda dapat menimbulkan persoalan-persoalan di masyarakat setelah kemerdekaannya. Oleh karena itu pemerintah Timor Leste segera merumuskan suatu kebijakan yang dimanifestasikan dalam bentuk undang-undang yang selanjutnya dikenal dengan UU No.1/2003. Pemberlakuan UU No.1/2003 ini pada dasarnya mengatur 3 ketentuan hukum prioritas: pertama, kepentingan umum (negara); kedua, kepentingan bekas pemegang hak, dan; ketiga pemanfaatkan tanah atau bangunan oleh masyarakat. metode penelitian yang digunakan dalam penelitian ini bersifat deskriptif dengan menggunakan pendekatan kualitatif. DNTPSC sebagai badan pelaksana telah memaksimalkan seluruh unit kerja yang ada di struktur baik di tingkat pusat maupun daerah. Dalam Implementasi kebijakan pemerintah ini dengan kontribusi yang signifikan dari berbagai pihak. Hasil temuan dalam penelitian menunjukkan telah terdaftarnya 12943 pengaduan atau klaim dengan pemanfaatannya sebesar 11343 sedangkan 1927 sebagai Asset Milik Negara (AMN) telah dimanfaatkan secara maksimal. Implementasi kebijakan nasionalisasi telah mencapai target, hal ini tidak terlepas dari koordinasi antar institusi pemerintah yang baik, adanya aturan hukum yang jelas, dukungan donator Internasional, partisipasi masyarakat dan sarana prasarana. Kata Kunci: Evaluasi Kebijakan, Nasionalisas

Particle production azimuthal asymmetries in a clustering of color sources model

The collective interactions of many partons in the first stage of the collisions is the usual accepted explanation of the sizable elliptical flow. The clustering of color sources provides a framework of partonic interactions. In this scheme, we show a reasonable agreement with RHIC data for pT<1.5 GeV/c in both the dependence of v2 transverse momentum and in the shape of the nuclear modified factor on the azimuthal angle for different centralities. We show the predictions at LHC energies for Pb-Pb. In the case of proton-proton collisions a sizable v2 is obtained at this energy.Comment: To appear in Journal of Physics

Percolation Effects in Very High Energy Cosmic Rays

Most QCD models of high energy collisions predict that the inelasticity $K$ is an increasing function of the energy. We argue that, due to percolation of strings, this behaviour will change and, at $\sqrt{s} \simeq 10^4$ GeV, the inelasticity will start to decrease with the energy. This has straightforward consequences in high energy cosmic ray physics: 1) the relative depth of the shower maximum $\bar{X}$ grows faster with energy above the knee; 2) the energy measurements of ground array experiments at GZK energies could be overestimated.Comment: Correction of equation (19) and figures 3 and 4. 4 pages, 4 figure