Shared document access control using keystores

User-generated content, e.g., documents, media, etc. is often created and shared over online document creation and file-hosting services. One technique to restrict access to shared documents is to specify a list of individuals with whom a document is to be shared. Current services do not address the scenario, frequent within enterprise settings, in which a document is made accessible to different groups of individuals based on their rank and clearance levels. Techniques of this disclosure encrypt shared documents such that access is granted to individuals in possession of a certain key. Certain documents, e.g., sensitive documents intended for view only by top management, are associated one set of keys, while documents viewable by more employees have a different set of keys. Document access retains the single-step simplicity of create-and-share techniques. Access is selectively provided to users based on the key provided

Automatic Detection and Deletion of Unused Online Accounts

Users often create online accounts that are used only for a short period after which the user does not utilize the account anymore. Similarly, a user may stop using an account that was previously used regularly. The existence of such unused or stale accounts exposes the user to security and privacy risks, e.g., if the information held by the service providers of such accounts becomes available to third parties due to breaches, leaks, or sales. With user permission, the techniques of this disclosure detect unused or stale online accounts by detecting when a user does not login to an account for a long period, and facilitate deletion of the account

Automatic slide progression during a presentation

Advancing slides during a presentation requires human input, e.g., via a clicker, or other input device. Such input requires the presenter or a human assistant to take explicit action. This disclosure describes automatic slide-progression techniques to advance a presentation, e.g., presentation slides, to pages or slides that match a presenter’s current speech. With user permission, a machine learning model analyzes the presentation content. It matches the content with speech from the presenter and automatically presents an appropriate slide. The techniques enable the correct slide to be displayed without explicit input from the presenter

Pediatric ocular rosacea, a misdiagnosed disease with high morbidity: Proposed diagnostic criteria

Ocular rosacea is an important and underdiagnosed chronic inflammatory disorder observed in children. A clinical spectrum ranging from chronic eyelid inflammation, recurrent ocular redness, photophobia and/or hordeola/chalazions and conjunctival/corneal phlyctenules evolving to neovascularization and scarring may occur. Visual impairment and consequent amblyopia are frequent and corneal perforation although rare is the most feared complication. Ocular manifestations usually precede cutaneous lesions. Although few cases of pediatric ocular rosacea (POR) have been reported in the literature, many cases must have been underdiagnosed or misdiagnosed. The delay in diagnosis is greater than one year in the large majority of cases and may lead to serious ocular sequelae. This review aims to highlight the clinical features of POR, its epidemiology, easy diagnosis and effective treatment. We also propose new diagnostic criteria, in which at least three of the five clinical criteria must be present: (1) Chronic or recurrent keratoconjunctivitis and/or red eye and/or photophobia; (2) Chronic or recurrent blepharitis and/or chalazia/ hordeola; (3) Eyelid telangiectasia documented by an ophthalmologist; (4) Primary periorificial dermatitis and/ or primary features of rosacea; and (5) Positive familial history of cutaneous and/or ocular rosacea

Anticorrelation between Ion Acceleration and Nonlinear Coherent Structures from Laser-Underdense Plasma Interaction

In laser-plasma experiments, we observed that ion acceleration from the Coulomb explosion of the plasma channel bored by the laser, is prevented when multiple plasma instabilities such as filamentation and hosing, and nonlinear coherent structures (vortices/post-solitons) appear in the wake of an ultrashort laser pulse. The tailoring of the longitudinal plasma density ramp allows us to control the onset of these insabilities. We deduced that the laser pulse is depleted into these structures in our conditions, when a plasma at about 10% of the critical density exhibits a gradient on the order of 250 {\mu}m (gaussian fit), thus hindering the acceleration. A promising experimental setup with a long pulse is demonstrated enabling the excitation of an isolated coherent structure for polarimetric measurements and, in further perspectives, parametric studies of ion plasma acceleration efficiency.Comment: 4 pages, 5 figure

O poder organizacional é preditor da qualidade da tomada de decisão

The aim of this study was to analyze the links between power and the quality of decision. Participants were 50 employees from an organizational company, consisting of two groups (High-Power, N=24; Low-Power, N=26) based on the hierarchical power position in the organization. To evaluate the quality of the decisions, all participants performed tasks involving choice among several alternatives in two separated moments of the same day: in the morning (at the beginning of the workday) and late afternoon (at the end of the workday). Additional subjective measures (fatigue, alertness, effort) and skin conductance were obtained. Results indicated that having high power in the organization was related to making better decisions, over and above the subjective levels of fatigue, alertness, effort, and of physiological arousal. No effects of time-of-day were found on the decision making. Consistent with experimental research, having power facilitated decision making performance in an organizational context.info:eu-repo/semantics/publishedVersio

Are the effects of unreal violent videogames pronounced when playing with a virtual reality system?

This study was conducted to analyze the short-term effects of violent electronic games, played with or without a virtual reality (VR) device, on the instigation of aggressive behavior. Physiological arousal (heart rate (HR)), priming of aggressive thoughts, and state hostility were also measured to test their possible mediation on the relationship between playing the violent game (VG) and aggression. The participants—148 undergraduate students—were randomly assigned to four treatment conditions: two groups played a violent computer game (Unreal Tournament), and the other two a non-violent game (Motocross Madness), half with a VR device and the remaining participants on the computer screen. In order to assess the game effects the following instruments were used: a BIOPAC System MP100 to measure HR, an Emotional Stroop task to analyze the priming of aggressive and fear thoughts, a self-report State Hostility Scale to measure hostility, and a competitive reaction-time task to assess aggressive behavior. The main results indicated that the violent computer game had effects on state hostility and aggression. Although no significant mediation effect could be detected, regression analyses showed an indirect effect of state hostility between playing a VG and aggressio