Bucking the trend: An agentive perspective of managerial influence on blog’s attractiveness

Blog management is central to the digitalization of work. However, existing theories tend to focus on environmental influence rather than managerial control of a blog’s attractiveness at a microlevel. This study provides an agentive account of the adaptive behaviours exerted by the bloggers through the ways they use contents of their blogs to locate and harness their structural network positions of a blogosphere. We collated individual characteristics of 165 bloggers who blogged about economics, and then analysed the ways they maintained the contents of their blogs. We used network analysis and monomial logistic regression to test our model predictions. Our findings show that in contrast to less attractive blogs, bloggers who are mindful of their peers’ contents as a means of maintaining network positions attract a significantly higher level of traffic to their blogs. This agentive perspective offers practical insights into how nodal preferences can be reversed in blog management. We conclude the paper by discussing contributions to theory and future research

Valor de corte del cociente proteinuria/creatininuria predictor de proteinuria = 150 mg/24 h en una muestra de estudiantes argentinos. Utilidad de su aplicación para categorización de la proteinuria

Introducción: la proteinuria es marcador clásico de daño renal. La organización Kidney Disease: Improving Global Outcomes (KDIGO) categoriza en 2012 la proteinuria de 24 h (PER) como mg/24 h o la relación proteinuria/creatininuria en muestra aislada (PCR) como mg/g así: A1, normal-levemente aumentada (500). La PER es el gold standard y la PCR fue incorporada para evitar recolección de 24 h, pero la equivalencia numérica entre ambas es controvertida. El valor 150 mg/24 h tiene relevancia diagnóstica/pronóstica en enfermedad renal crónica. Objetivos: determinar, en una muestra de estudiantes argentinos, la correlación de PCR en primera orina matutina con PER, el valor de corte (VdC) de PCR predictor de PER=150 mg/24 h y la concordancia entre ambas metodologías para la categorización A según valores de PCR de la clasificación KDIGO 2012 y del VdC hallado.Materiales y métodos: estudio descriptivo, analítico y transversal realizado en una muestra de 51 estudiantes. Determinaciones en orina de 24 h y en la primera matutina. Proteínas: método rojo de pirogalol molibdato; creatinina: Jaffé cinético. Correlación: coeficiente de Spear-man; concordancia: Bland-Altman y kappa. VdC: análisis ROC (receiver operating curve). Programas: Excel yMedcalc. IC95 %, p<0,05. Resultados: proteinuria (mediana/rango intercuartil), PER (mg/24 h): 106,00/83,64-137,82; PCR (mg/g): 58,00/50,50-87,00; p=0,025; co-eficiente Spearman: 0,5540; Bland-Altman media de las diferencias (PER-PCR): 31,4. ABC=0,883 (IC95%: 0,762-0,956); VdC=82 mg/g; S=90 %; E=82,9 %; RP+=5,27; RP-=0,12. Concordancia en categorización A: kappa empleando PCR 150 mg/g: 0,106 (IC95%: -0,134-0,347), pobre-leve; kappa empleando VdC hallado: 0,4568 (IC95%: 0,2063-0,6505), leve-considerable. Conclusiones: la concordancia en categorización A mejora al utilizar el VdC. Destaca la importancia de no usar como equivalentes PCR=150 mg/g y PER=150 mg/24 h para diferenciar proteinuria normal de aumentada, sino la necesidad de establecer en cada laboratorio los VdC correspondientes

Diagnosis, Prognosis and Treatment of Canine Cutaneous and Subcutaneous Mast Cell Tumors

Mast cell tumors (MCTs) are hematopoietic neoplasms composed of mast cells. It is highly common in dogs and is extremely important in the veterinary oncology field. It represents the third most common tumor subtype, and is the most common malignant skin tumor in dogs, corresponding to 11% of skin cancer cases. The objective of this critical review was to present the report of the 2nd Consensus meeting on the Diagnosis, Prognosis, and Treatment of Canine Cutaneous and Subcutaneous Mast Cell Tumors, which was organized by the Brazilian Association of Veterinary Oncology (ABROVET) in August 2021. The most recent information on cutaneous and subcutaneous mast cell tumors in dogs is presented and discussed

Combined fit to the spectrum and composition data measured by the Pierre Auger Observatory including magnetic horizon effects

The measurements by the Pierre Auger Observatory of the energy spectrum and mass composition of cosmic rays can be interpreted assuming the presence of two extragalactic source populations, one dominating the flux at energies above a few EeV and the other below. To fit the data ignoring magnetic field effects, the high-energy population needs to accelerate a mixture of nuclei with very hard spectra, at odds with the approximate E$^{-2}$ shape expected from diffusive shock acceleration. The presence of turbulent extragalactic magnetic fields in the region between the closest sources and the Earth can significantly modify the observed CR spectrum with respect to that emitted by the sources, reducing the flux of low-rigidity particles that reach the Earth. We here take into account this magnetic horizon effect in the combined fit of the spectrum and shower depth distributions, exploring the possibility that a spectrum for the high-energy population sources with a shape closer to E$^{-2}$ be able to explain the observations

Studies of the mass composition of cosmic rays and proton-proton interaction cross-sections at ultra-high energies with the Pierre Auger Observatory

In this work, we present an estimate of the cosmic-ray mass composition from the distributions of the depth of the shower maximum (Xmax) measured by the fluorescence detector of the Pierre Auger Observatory. We discuss the sensitivity of the mass composition measurements to the uncertainties in the properties of the hadronic interactions, particularly in the predictions of the particle interaction cross-sections. For this purpose, we adjust the fractions of cosmic-ray mass groups to fit the data with Xmax distributions from air shower simulations. We modify the proton-proton cross-sections at ultra-high energies, and the corresponding air shower simulations with rescaled nucleus-air cross-sections are obtained via Glauber theory. We compare the energy-dependent composition of ultra-high-energy cosmic rays obtained for the different extrapolations of the proton-proton cross-sections from low-energy accelerator data

Study of downward Terrestrial Gamma-ray Flashes with the surface detector of the Pierre Auger Observatory

The surface detector (SD) of the Pierre Auger Observatory, consisting of 1660 water-Cherenkov detectors (WCDs), covers 3000 km2 in the Argentinian pampa. Thanks to the high efficiency of WCDs in detecting gamma rays, it represents a unique instrument for studying downward Terrestrial Gamma-ray Flashes (TGFs) over a large area. Peculiar events, likely related to downward TGFs, were detected at the Auger Observatory. Their experimental signature and time evolution are very different from those of a shower produced by an ultrahigh-energy cosmic ray. They happen in coincidence with low thunderclouds and lightning, and their large deposited energy at the ground is compatible with that of a standard downward TGF with the source a few kilometers above the ground. A new trigger algorithm to increase the TGF-like event statistics was installed in the whole array. The study of the performance of the new trigger system during the lightning season is ongoing and will provide a handle to develop improved algorithms to implement in the Auger upgraded electronic boards. The available data sample, even if small, can give important clues about the TGF production models, in particular, the shape of WCD signals. Moreover, the SD allows us to observe more than one point in the TGF beam, providing information on the emission angle

The dynamic range of the upgraded surface-detector stations of AugerPrime

The detection of ultra-high-energy cosmic rays by means of giant detector arrays is often limited by the saturation of the recorded signals near the impact point of the shower core at the ground, where the particle density dramatically increases. The saturation affects in particular the highest energy events, worsening the systematic uncertainties in the reconstruction of the shower characteristics. The upgrade of the Pierre Auger Observatory, called AugerPrime, includes the installation of an 1-inch Small PhotoMultiplier Tube (SPMT) inside each water-Cherenkov station (WCD) of the surface detector array. The SPMT allows an unambiguous measurement of signals down to about 250m from the shower core, thus reducing the number of events featuring a saturated station to a negligible level. In addition, a 3.8m2 plastic scintillator (Scintillator Surface Detector, SSD) is installed on top of each WCD. The SSD is designed to match the WCD (with SPMT) dynamic range, providing a complementary measurement of the shower components up to the highest energies. In this work, the design and performances of the upgraded AugerPrime surface-detector stations in the extended dynamic range are described, highlighting the accuracy of the measurements. A first analysis employing the unsaturated signals in the event reconstruction is also presented