Neutrinos in the simplest little Higgs scenario and TeV leptogenesis

The little Higgs scenario may provide an interesting framework to accommodate TeV scale leptogenesis because a TeV Majorana mass of the right-handed neutrino that we employ for the latter may find a natural place near the ultraviolet cutoff of the former. In this work we study how a light neutrino spectrum, generated radiatively, and TeV scale leptogenesis can be embedded in the simplest little Higgs framework. Alternatively, we highlight how the neutrino Yukawa textures of the latter are constrained.Comment: 10 pages, latex, v2: refs and comments added, to appear in PR

Functions of cell surface galectin-glycoprotein lattices

Programmed remodeling of cell surface glycans by the sequential action of specific glycosyltransferases can control biological processes by generating or masking ligands for endogenous lectins. Galectins, a family of animal lectins with affinity for beta-galactosides, can form multivalent complexes with cell surface glycoconjugates and deliver a variety of intracellular signals to modulate cell activation, differentiation, and survival. Recent efforts involving genetic or biochemical manipulation of O-glycosylation and N-glycosylation pathways, as well as blockade of the synthesis of endogenous galectins, have illuminated essential roles for galectin-glycoprotein lattices in the control of biological processes including receptor turnover and endocytosis, host-pathogen interactions, and immune cell activation and homeostasis.Fil: Rabinovich, Gabriel Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Toscano, Marta Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Jackson, Shawn S.. University of Maryland; Estados UnidosFil: Vasta, Gerardo R.. University of Maryland; Estados Unido

Rehabilitasi Hutan di Kecamatan Peranap oleh Dinas Kehutanan Kabupaten Indragiri Hulu Tahun 2014-2015

Forest and critical land in Indragiri Hulu very concern that 12.20% of the total area Indragiri Hulu, so that efforts are needed to rehabilitate forests and land as a form of saving the forest from extinction. This study aims to investigate the implementation of forest rehabilitation and inhibiting factors as well as supporting the implementation of forest rehabilitation in the District Forestry Office Peranap by Indragiri Hulu.This study uses qualitative research methods with descriptive research, which can be interpreted as a problem-solving process was investigated by describing the state of the research subjects were based on the facts that appear during the study were then followed by the popularity of existing theories.Rehabilitation of the forest by the Forest Service in the District Peranap still not optimally in the running management of forest rehabilitation in the form of planning, implementation, monitoring and evaluation. There is a limiting factor namely human resources, sanctions, and infrastructure rehabilitation activities. While supporting factors in forest rehabilitation namely the will of society, the potential of good land resources, and the availability of seeds / seedlings

Etnografi Komunikasi pada Tiga Generasi Anggota Perkumpulan Marga Ang di Bagansiapi-Api

Penelitian ini bertujuan untuk mencari tahu mengenai interaksi dan pola komunikasi yang terjadi dalam perkumpulan marga Ang sebagai klan keluarga terbanyak dan yang pertama menemukan kota Bagansiapi-api. Penelitian ini dilakukan dengan pendekatan kualitatif dan menggunakan metode etnografi komunikasi. Studi ini diperkuat oleh teori Interaksi Fisher (dalam Morissan, 2014) dan pola komunikasi oleh Effendy (1989) untuk membahas hasil penelitian. Subjek penelitian yang dilibatkan antara lain seorang key informant dan empat informan yang merupakan anggota aktif serta empat informan yang merupakan anggota pasif dari perkumpulan marga Ang. Melalui hasil penelitian ini ditemukan seluruh tahapan interaksi Fisher hanya terjadi pada generasi ketiga pada kelompok aktif dan generasi pertama kelompok pasif. Pada kelompok aktif menggunakan pola komunikasi multi arah, hanya generasi ketiga yang menerapkan pola komunikasi dua arah. Di sisi lain, pada kelompok pasif hanya terdapat pola komunikasi satu arah di generasi pertama dan tidak ada pola komunikasi yang terjadi pada generasi muda

Semiclassical treatment of fusion processes in collisions of weakly bound nuclei

We describe a semiclassical treatment of nuclear fusion reactions involving weakly bound nuclei. In this treatment, the complete fusion probabilities are approximated by products of two factors: a tunneling probability and the probability that the system is in its ground state at the strong absorption radius. We investigate the validity of the method in a schematic two-channel application, where the channels in the continuum are represented by a single resonant state. Comparisons with full coupled-channels calculations are performed. The agreement between semiclassical and quantal calculations isquite good, suggesting that the procedure may be extended to more sophisticated discretizations of the continuum.Comment: 11 pages, 5 figure

STRATEGI OPTIMALISASI MUSEUM DI BANYUWANGI BERBASIS BANYUWANGI FESTIVAL (B-FEST)

Banyuwangi merupakan daerah yang saat ini pariwisatanya sangat maju. Banyak sekali destinasi wisata, baik wisata alam maupun buatan. Tingkat kunjungan wisatawannya meningkat pesat dari tahun ke tahun. Demikian pula dengan kultur kebudayaannya. Kearifan lokal di Banyuwangi masih sangat otentik. Hal tersebut memicu tingginya minat wisatawan untuk datang dan mengunjungi Banyuwangi. Tujuan penulisan ini adalah untuk menganalisis potensi dan menentukan strategi pengembangan museum di Banyuwangi agar dapat bersaing dengan daerah tujuan wisata lainnya dan mampu menjadi sarana penyimpanan hasil seni dan budaya dalam kegiatan Banyuwangi Festival (B-Fest). Metode penelitian dalam laporan ini adalah dengan menggunakan sistem pengumpulan data secara langsung melalui observasi, wawancara, studi pustaka, studi dokumen, serta menggunakan teknik analisis data yang disajikan dalam bentuk diskriptif. Hasil penelitian menunjukan bahwa : 1) Banyaknya karya seni dan budaya yang dihasilkan dalam Banyuwangi Festival (B-Fest) yang harus diidentifikasi dan harus dirawat dengan baik; 2) Perlunya sarana eduksi berbasis museum sebagai penunjang pariwisata budaya di Kabupaten Banyuwangi. 3) Museum Banyuwangi berbasis banyuwangi Festival (B-Fest) bisa menjadi tempat pariwisata alternatif untuk meningkatkan jumlah wisatawan ke Banyuwangi. Kata kunci : Banyuwangi, Festival, Museu

Module identification in bipartite and directed networks

Modularity is one of the most prominent properties of real-world complex networks. Here, we address the issue of module identification in two important classes of networks: bipartite networks and directed unipartite networks. Nodes in bipartite networks are divided into two non-overlapping sets, and the links must have one end node from each set. Directed unipartite networks only have one type of nodes, but links have an origin and an end. We show that directed unipartite networks can be conviniently represented as bipartite networks for module identification purposes. We report a novel approach especially suited for module detection in bipartite networks, and define a set of random networks that enable us to validate the new approach

Reconstructing the massive black hole cosmic history through gravitational waves

The massive black holes we observe in galaxies today are the natural end-product of a complex evolutionary path, in which black holes seeded in proto-galaxies at high redshift grow through cosmic history via a sequence of mergers and accretion episodes. Electromagnetic observations probe a small subset of the population of massive black holes (namely, those that are active or those that are very close to us), but planned space-based gravitational-wave observatories such as the Laser Interferometer Space Antenna (LISA) can measure the parameters of ``electromagnetically invisible'' massive black holes out to high redshift. In this paper we introduce a Bayesian framework to analyze the information that can be gathered from a set of such measurements. Our goal is to connect a set of massive black hole binary merger observations to the underlying model of massive black hole formation. In other words, given a set of observed massive black hole coalescences, we assess what information can be extracted about the underlying massive black hole population model. For concreteness we consider ten specific models of massive black hole formation, chosen to probe four important (and largely unconstrained) aspects of the input physics used in structure formation simulations: seed formation, metallicity ``feedback'', accretion efficiency and accretion geometry. For the first time we allow for the possibility of ``model mixing'', by drawing the observed population from some combination of the ``pure'' models that have been simulated. A Bayesian analysis allows us to recover a posterior probability distribution for the ``mixing parameters'' that characterize the fractions of each model represented in the observed distribution. Our work shows that LISA has enormous potential to probe the underlying physics of structure formation.Comment: 24 pages, 16 figures, submitted to Phys. Rev.