Absorption and Emission in the non-Poisson case

This letter adresses the challenging problems posed to the Kubo-Anderson (KA) theory by the discovery of intermittent resonant fluorescence with a non-exponential distribution of waiting times. We show how to extend the KA theory from aged to aging systems, aging for a very extended time period or even forever, being a crucial consequence of non-Poisson statistics.Comment: 4 pages 3 figures. accepted for publication on Physical Review Letter

An algebraic SU(1,1) solution for the relativistic hydrogen atom

The bound eigenfunctions and spectrum of a Dirac hydrogen atom are found taking advantage of the $SU(1, 1)$ Lie algebra in which the radial part of the problem can be expressed. For defining the algebra we need to add to the description an additional angular variable playing essentially the role of a phase. The operators spanning the algebra are used for defining ladder operators for the radial eigenfunctions of the relativistic hydrogen atom and for evaluating its energy spectrum. The status of the Johnson-Lippman operator in this algebra is also investigated.Comment: to appear in Physics Letters A (2005). We corrected a misprint in page 7, in the paragraph baggining with "With the value of ..." the ground state should be |\lambda, \lambda>, not |\lambda, \lambda+1

Simulating spin-3/2 particles at colliders

Support for interactions of spin-3/2 particles is implemented in the FeynRules and ALOHA packages and tested with the MadGraph 5 and CalcHEP event generators in the context of three phenomenological applications. In the first, we implement a spin-3/2 Majorana gravitino field, as in local supersymmetric models, and study gravitino and gluino pair-production. In the second, a spin-3/2 Dirac top-quark excitation, inspired from compositness models, is implemented. We then investigate both top-quark excitation and top-quark pair-production. In the third, a general effective operator for a spin-3/2 Dirac quark excitation is implemented, followed by a calculation of the angular distribution of the s-channel production mechanism.Comment: 20 pages, 7 figure

TRANSMIT: Training Research and Applications Network to Support the Mitigation of Ionospheric Threats

TRANSMIT is an initiative funded by the European Commission through a Marie Curie Initial Training Network (ITN). Main aim of such networks is to improve the career perspectives of researchers who are in the first five years of their research career in both public and private sectors. In particular TRANSMIT will provide a coordinated program of academic and industrial training, focused on atmospheric phenomena that can significantly impair a wide range of systems and applications that are at the core of several activities embedded in our daily life. TRANSMIT deals with the harmful effects of the ionosphere on these systems, which will become increasingly significant as we approach the next solar maximum, predicted for 2013. Main aim of the project is to develop real time integrated state of the art tools to mitigate ionospheric threats to Global Navigation Satellite Systems (GNSS) and several related applications, such as civil aviation, marine navigation and land transportation. The project will provide Europe with the next generation of researchers in this field, equipping them with skills developed through a comprehensive and coordinated training program. Theirs research projects will develop real time integrated state of the art tools to mitigate these ionospheric threats to GNSS and several applications that rely on these systems. The main threat to the reliable and safe operation of GNSS is the variable propagation conditions encountered by GNSS signals as they pass through the ionosphere. At a COST 296 MIERS (Mitigation of Ionospheric Effects on Radio Systems) workshop held at the University of Nottingham in 2008, the establishment of a sophisticated Ionospheric Perturbation Detection and Monitoring (IPDM) network (http://ipdm.nottingham.ac.uk/) was proposed by European experts and supported by the European Space Agency (ESA) as the way forward to deliver the state of the art to protect the range of essential systems vulnerable to these ionospheric threats. Through a set of carefully designed research work packages TRANSMIT will be the enabler of the IPDM network. The goal of TRANSMIT is therefore to provide a concerted training programme including taught courses, research training projects, secondments at the leading European institutions, and a set of network wide events, with summer schools, workshops and a conference, which will arm the researchers of tomorrow with the necessary skills and knowledge to set up and run the proposed service. TRANSMIT will count on an exceptional set of partners, encompassing both academia and end users, including the aerospace and satellite communications sectors, as well as GNSS system designers and service providers, major user operators and receiver manufacturers. TRANSMIT's objectives are: A. Develop new techniques to detect and monitor ionospheric threats, with the introduction of new prediction and forecasting models, mitigation tools and improved system design; B. Advance the physical modeling of the underlying processes associated with the ionospheric plasma environment and the knowledge of its influences on human activity; C. Establish a prototype of a real time system to monitor the ionosphere, capable of providing useful assistance to users, which exploits all available resources and adds value for European services and products; D. Incorporate solutions to this system that respond to all end user needs and that are applicable in all geographical regions of European interest (polar, high and mid-latitudes, equatorial region). TRANSMIT will pave the way to establish in Europe a system capable of mitigating ionospheric threats on GNSS signals in real tim

Transmission of Information between Complex Networks: 1/f-Resonance

We study the transport of information between two complex networks with similar properties. Both networks generate non-Poisson renewal fluctuations with a power-law spectrum 1/f^(3-\mu), the case \mu= 2 corresponding to ideal 1/f-noise. We denote by \mu_S and \mu_P the power-law indexes of the network "system" of interest S and the perturbing network P respectively. By adopting a generalized fluctuation-dissipation theorem (FDT) we show that the ideal condition of 1/f-noise for both networks corresponds to maximal information transport. We prove that to make the network S respond when \mu_S < 2 we have to set the condition \mu_P < 2. In the latter case, if \mu_P < \mu_S, the system S inherits the relaxation properties of the perturbing network. In the case where \mu_P > 2, no response and no information transmission occurs in the long-time limit. We consider two possible generalizations of the fluctuation-dissipation theorem and show that both lead to maximal information transport in the condition of 1/f-noise.Comment: 14 pages, 2 figures. arXiv admin note: substantial text overlap with arXiv:1007.291

EXPLORACIONES PRIMATOLOGICAS EN LAS QUEBRA DAS BLANCO, BLANQUILLO Y TANGARANA (RIO TAHUAYO, AMAZONIA PERUANA

Reportamos los resultados de una exploración primatológica en la Reserva Comunal Tamshiyacu-Tahuayo (RCTT) y sus cercanías, con énfasis al estado actual de la fauna primatológica en general incluyendo al huapo rojo, Cacajao calvus ucayalii, y la presencia de asociaciones interespecíticas entre Saguinus fuscicollis y Saguinus mystax. De las especies que habitan en la RCTT, las dos especies de pichicos fueron observadas con mayor frecuencia, de otros primates de tamaño pequeño y mediano como Callicebus cupreus (tocón colorado), Saimiri sciureus (fraile) y Pithecia monachus (huapo negro). Otros de tamaño mediano y grande fueron raras veces observados o ni una vez. Entre los primates, los de tamaño grande y mediano están sujetos a una alta presión de caza que podría llevarlos a una inminente extinción en esta zona

OBSERVACIONES PRELIMINARES SOBRE LA ECOLOGIA DE Speothos venaticus (CANIDAE: CARNIVORA) EN SU HABITAT NATURAL

Se presenta información sobre el tamaño, composición, componentes alimenticios y posibles depredadores de Speothos venaticus. También se incluye una breve descripción del hábitat y aspectos del comportamiento, así como de las interrelaciones del uso de "carne de monte" con el hombre

PERKUATAN LERENG DENGAN RUMPUT VETIVER PADA DAERAH LERENG DI KELURAHAN REWARANGGA SELATAN KECAMATAN ENDE TIMUR KABUPATEN ENDE

Rewarangga Selatan Village is mostly located in hilly areas. The transfer of land use to settlements will of course disrupt the stability of the existing slopes. Therefore, education and assistance are needed in the form of training and technical guidance on proper slope management so that stability is maintained. The training in this service activity aims to: equip the community with knowledge about the potential for landslide-prone slopes, provide alternative efforts to mitigate community-based landslide disasters and make people aware of environmental sustainability in slope areas. The training was carried out using lecture, demonstration and direct mentoring methods. The lectures were used to convey the concepts of: (a) introduction to landslides, (b) geographic information on potential landslides in the South Rewarangga Village, and (c) community-based landslide disaster mitigation using vegetative methods. Furthermore, there was a demonstration by the service team as resource persons, namely by providing an example of planting vetiver grass for mitigation of landslides at the service location. The results of the implementation of service activities show that the success of the target number of training participants (100%), the achievement of the training objectives (80%), the achievement of the planned material targets (90%), and the ability of participants in mastering the material (75%)

Recognition of antigen-specific B-cell receptors from chronic lymphocytic leukemia patients by synthetic antigen surrogates

In patients with chronic lymphocytic leukemia (CLL), a single neoplastic antigen-specific B cell accumulates and overgrows other B cells, leading to immune deficiency. CLL is often treated with drugs that ablate all B cells, leading to further weakening of humoral immunity, and a more focused therapeutic strategy capable of targeting only the pathogenic B cells would represent a significant advance. One approach to this would be to develop synthetic surrogates of the CLL antigens allowing differentiation of the CLL cells and healthy B cells in a patient. Here, we describe nonpeptidic molecules capable of targeting antigen-specific B cell receptors with good affinity and selectivity using a combinatorial library screen. We demonstrate that our hit compounds act as synthetic antigen surrogates and recognize CLL cells and not healthy B cells. Additionally, we argue that the technology we developed can be used to identify other classes of antigen surrogates