Leading Logarithms in Field Theory

We consider the Sudakov form factor in effective theories and we show that one can derive correctly the double logarithms of the original, high-energy, theory. We show that in effective theories it is possible to separate explicitely soft and hard dynamics being these two regimes related to velocity conserving and to velocity changing operators respectively. A new effective theory is sketched which extracts the leading collinear singularities of the full theory amplitudes. Finally, we show how all leading logarithmic effects in field theory can be obtained by means of simple effective theories, where they correspond to a renormalization effect.Comment: Latex file, 20 pages, no figures, corrected some typo

Model independent determination of the light-cone wave functions for exclusive processes

We present a method to compute, by numerical simulations of lattice QCD, the light-cone wave functions which enter exclusive processes at large momentum transfer, such as electromagnetic elastic scatterings, or exclusive semi-leptonic decays as B -> pi (B -> rho) and radiative decays as B -> K* gamma. The method is based on first principles and does not require any model assumption.Comment: 7 pages, LaTeX fil

Some remarks about level sets of Cesaro averages of binary digits

The problem of averaging the binary digits of numbers in $left[ 0,1 ight]$ is considered. It is well known that Lebesgue a.e. in $left[ 0,1 ight]$ the usual Cesaro average is equal to $rac{1}{2}$ and that the Hausdorff dimension of the set where the Cesaro average is equal to $alpha$ is given by an entropy function $dleft( alpha ight)$. We prove that if $alpha eq rac{1}{2}$ then the Hausdorff measure $mathcal{H}^{dleft( alpha ight) }$ of such set is infinite. We moreover explicitly construct an infinite matrix $T$ (in a class $mathcal{M}$ of Toeplitz matrices regular with respect to Cesaro averages) such that the Hausdorff dimension of the set of the points not having Cesaro average and where the $T$-generalized average is $alpha$ is still given by $dleft( alpha ight)$

Co-opting and resisting market based instruments for private land conservation

The increasing popularity of private land conservation (PLC) globally has quickly translated into an array of polices and programs aimed at achieving ecological benefits. The growth of PLC is entwined with the rise of neoliberal governance, with private land proving congruous with the promotion of market-based instruments (MBIs) and the reliance on private protected areas for conservation in lieu of government investment in public lands. Despite a growing literature on the implications of neoliberal environmental governance, there remains a need for specific insights into the way that individual landholders and ecologies can co-opt or resist the rationalities of MBIs in the practice of private land conservation. Through semi-structured interviews and property walks with 18 landholders, this research examines the implementation of a reverse-auction tender scheme called 'EcoTender' in Victoria, Australia. We uncovered four main tensions between the market logic of the program and conservation practice: 1) some landholders used the payment scheme to increase regulatory protections on their property through covenants/easements; 2) many landholders struggled to conceive of their stewardship practice as contractual labour; 3) landholders were producing novel ecosystems that challenged land management focused at the property parcel scale when EcoTender encouraged a return to historical benchmark ecologies, and; 4) many landholders wanted social collaboration when the program required competition for cost efficiency. Our insights show that PLC must create room for a diverse trajectory of conservation practice in dynamic socio-ecological contexts. This means careful reflection on the validity of assumptions underpinning MBIs, the trade-offs that come with applying market logic to conservation and the long-term implications of these instruments for policy and practice

Fisurectomy and anoplasty with botulinum toxin injection in patients with chronic anal posterior fissure with hypertonia: a long-term evaluation

Chronic anal fissure\u2019s (CAF) etiopathogenesis remain unclear. CAF of the posterior commissure (CAPF) are often characterized by internal anal sphincter (IAS) hypertonia. The treatment of this disease aimed to reduce IAS hypertonia. Due to the high rate of anal incontinence after LIS, the employment of sphincter preserving surgical techniques associated to pharmacological sphincterotomy appears more sensible. The aim of our study is to evaluate the long-term results of fissurectomy and anoplasty with V\u2013Y cutaneous flap advancement associated to 30 UI of botulinum toxin injection for CAPF with IAS hypertonia. We enrolled 45 patients undergone to fissurectomy and anoplasty with V\u2013Y cutaneous flap advancement and 30 UI botulinum toxin injection. All patients were followed up for at least 5 years after the surgical procedure, with evaluation of anal continence, recurrence rate and MRP (Maximum resting pressure), MSP (Maximum restricting pressure), USWA (Ultrasound wave activity). All patients healed within 40 days after surgery. We observed 3 \u201cde novo\u201d post-operative anal incontinence cases, temporary and minor; the pre-operative ones have only temporary worsened after surgery. We reported 3 cases of recurrences, within 2 years from surgery, all healed after conservative medical therapy. At 5 year follow-up post-operative manometric findings were similar to those of healthy subjects. At 5 years after the surgical procedure, we achieved good results, and these evidences show that surgical section of the IAS is not at all necessary for the healing process of the CAPF

Participación de las comunidades locales para el desarrollo turístico: el caso de Carlos Keen

La complejidad del fenómeno turístico determinada en función de la cantidad de elementos que interactúan en su concepción, requiere una articulación entre las distintas partes involucradas. En este sentido, en el marco de los nuevos paradigmas del desarrollo, se destaca la importancia de la participación como propulsora del compromiso de los diversos actores propiciando los cambios necesarios en el destino turístico para su adaptación a las condiciones actuales. Esta circunstancia involucra la necesidad de colaboración entre los ámbitos público, privado y la comunidad local dotando de transparencia y consenso a los procesos de toma de decisiones y a las acciones en relación al desarrollo del territorio. El programa "Pueblos Turísticos", que responde a la política impulsada por la Secretaría de Turismo de la Provincia de Buenos Aires, tiene por objetivo promover el desarrollo del turismo comunitario en los pueblos rurales bonaerenses. En este marco, se destaca la localidad de Carlos Keen, por ser el primer pueblo en implementarlo, y en donde éste se ha desarrollado de manera más eficaz. Así, a través de este caso se pretende analizar la participación social derivada de una política impulsada por el Estado. Para tal fin, se propone un abordaje predominantemente cualitativo en donde se tienen en consideración: el alcance de la participación, los modos de comunicación y de decisión, y la extensión de la autoridad. Los principales resultados dan cuenta de una baja predisposición de la comunidad local para asumir el compromiso en el desarrollo del programa a partir del trabajo en conjunto, dificultando el alcance de los objetivos establecidos. Asimismo, se observa una revitalización del territorio que se traduce en una revalorización de los espacios turísticos y recreativos, pero cuyos beneficios alcanzan solo a aquellos actores con mayor involucramiento en emprendimientos referidos a la actividad.Fil: Cacciutto, Mariangel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Roldán, Nadia G. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Corbo, Yanina A. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Cruz, Gonzalo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina

The use of new mobile and gaming technologies for the assessment and rehabilitation of people with ataxia: a systematic review and meta-analysis

There are no currently available disease-modifying pharmacological treatments for most of the chronic hereditary ataxias; thus, effective rehabilitative strategies are crucial to help improve symptoms and therefore the quality of life. We propose to gather all available evidence on the use of video games, exergames, and apps for tablet and smartphone for the rehabilitation, diagnosis, and assessment of people with ataxias. Relevant literature published up to June 8, 2020, was retrieved searching the databases PubMed, ISI Web of Science, and the Cochrane Database. Data were extracted using a standardized form, and their methodological quality was assessed using RoB and QUADAS-2. Six studies of 434 retrieved articles met the predefined inclusion/exclusion criteria. Two of them were diagnostic, while 4 were experimental studies. Studies included participants ranging from 9 to 28 in trials and 70 to 248 in diagnostic studies. Although we found a small number of trials and of low methodological quality, all of them reported an improvement of motor outcomes and quality of life as measured by specific scales, including the SARA, BBS, DHI, and SF-36 scores. The main reason for such low quality in trials was that most of them were small and uncontrolled, thus non-randomized and unblinded. As video games, exergames, serious games, and apps were proven to be safe, feasible, and at least as effective as traditional rehabilitation, further and more high-quality studies should be carried out on the use of these promising technologies in people with different types of ataxia

Fluorescent Light Energy (FLE) Generated through Red LED Light and a Natural Photoconverter Gel as a New, Non-Invasive Approach for Facial Age Control: A Pilot Study

This study, for the first time, evaluated the safety and efficacy of a new natural-based topical gel containing a spirulina extract. This photoconverter gel generates fluorescent light energy (FLE) via a red LED light device, which is proven to be effective for age control of facial skin. This was a one-centre, observational, uncontrolled pilot trial. Eight healthy female subjects aged 35 to 65 years old, with Fitzpatrick skin types II–V were recruited. The duration of the study was five treatment sessions of one treatment every seven days, with a final follow-up at one month after the last treatment session. The images and the related data were acquired with the SONY® Mod. DSCRX10M3, the Canfield VISIA Facial Imaging System®, and QUANTIFICARE 3D® analysis. Patient compliance was excellent (100%) and the treatment was described as warm and pleasant by the patients. After 30 days, VISIA parameters such as wrinkles, texture, red areas, and Trueskin Age® had improved. The safety and efficacy of the FLE treatment assessed in this trial were achieved for overall rejuvenation of facial skin, focusing on wrinkles evaluated via the specific VISIA algorithms