Abraham Lopez, Guitar

Prelude N. 3; Etude N. 7 / Heitor Villa-Lobos; Capricho Arabe; Recuerdos da la Alhambra / Francisco Tarrega; Asturias / Isaac Albeniz; Rossiniana N.1 / Mauro Guilian

Abraham Lopez, Guitar

Serenade for Flute and Guitar, Op. 127 / M. Guiliani; Pavana I / Luis de Milán; Españoleta / Gaspar Sanz; Capricho Arabe / Francisco Tarrega; Asturisa / Isaac Albeniz; Vals N.4 / Agustin Barrios Mangore; Sonata 3 / Manuel M. Ponc

INVESTIGATING THE RANSOMWARE INFECTION RATE OF K12 SCHOOL DISTRICTS DURING THE COVID PANDEMIC

Ransomware attacks have become part of the normal vernacular, as more organizations get attacked and must deal with the outcome in the media. School districts are in a unique position because of COVID and the sudden shift to online or hybrid learning. Over the past few years, ransomware attacks on K12 school districts have been widely reported in the news, leading to questions on whether K12 school districts are more vulnerable to these attacks. This project focused on: the prevalence of ransomware attacks in K12 School Districts in the USA in general and in the Inland Empire in particular, examining what value attackers gain by attacking a school district as well as looking at the costs incurred to the district because of an attack, whether K12 School districts in the Inland Empire are following cybersecurity best practices to protect in case of a ransomware attack. The findings are: that school districts are at a higher risk of ransomware attacks because they are soft targets with understaffed under budgeted IT departments, school districts do not pay ransoms and are left with the higher cost or remediation, there is a lack of security focus in the job descriptions for IT managers working in K12 in the Inland Empire, temporary school shutdowns due to ransomware are shown to negatively affect the GDP in the long term. The recommendations are: school districts should use COVID relief funds to hire/contract a CISO and figure out a way to keep the position funded into the future, [1] [2] school districts in the Inland Empire should hire more IT staff and focus on security awareness training for its users including students, schools should move away from passwords and replace it with 2FA using badge and pins. For future study the issues of long term funding for CISO positions and the creation of security awareness for K12 students needs to be addressed

The Cultural appropriation of the Day of the Dead by foreign studio films

A year after the release of the film “Spectre”, the Mexican government decided to organize a parade in Mexico city as a consequence of the representation in such film. Even though a parade is not even part of the original tradition. Cultures naturally change and evolve yet, how valid is it for foreigners to be responsible for these modifications? How are these actions different from the cultural impositions in the times of the colonies?Um ano após o lançamento do filme “Spectre”, o governo mexicano decidiu organizar um desfile na cidade do México como consequência da representação em tal filme. Mais um desfile não faça parte da tradição original. As culturas naturalmente mudam e evoluem ainda, qual é a validade dos estrangeiros serem responsáveis ​​por essas modificações? Como essas ações diferem das imposições culturais nos tempos das colônias

Self-modulation of nonlinear Alfven waves in a strongly magnetized relativistic electron-positron plasma

We study the self-modulation of a circularly polarized Alfven wave in a strongly magnetized relativistic electron-positron plasma with finite temperature. This nonlinear wave corresponds to an exact solution of the equations, with a dispersion relation that has two branches. For a large magnetic field, the Alfven branch has two different zones, which we call the normal dispersion zone (where d omega/dk > 0) and the anomalous dispersion zone (where d omega/dk < 0). A nonlinear Schrodinger equation is derived in the normal dispersion zone of the Alfven wave, where the wave envelope can evolve as a periodic wave train or as a solitary wave, depending on the initial condition. The maximum growth rate of the modulational instability decreases as the temperature is increased. We also study the Alfven wave propagation in the anomalous dispersion zone, where a nonlinear wave equation is obtained. However, in this zone the wave envelope can evolve only as a periodic wave train.CONICyT 21100839 74110049FONDECyT 1110135 1110729 1080658 1121144CNPqEuropean Commission for a Marie Curie International Incoming FellowshipInstitute for Fusion Studie

Point-of-Care Ultrasound (POCUS) Workshop for Internal Medicine Residents: A Pre/Post-Training Assessment of Confidence and Knowledge

Across the country, internal medicine residency training programs are having difficulty figuring out how to optimally implement an effective point-of-care ultrasound training into their respective curricula. This study aimed to assess whether a week-long training course of didactics, followed by hands-on practice, improved both the confidence and knowledge skills of internal medicine residents using point-of-care ultrasound (POCUS). The trainees were asked to complete pre/post-training surveys, which tested their ability to interpret POCUS images and also asked them to score their confidence in using POCUS. Results showed a statistically significant improvement in not only their confidence in using POCUS, but also their knowledge levels of interpreting POCUS images. There were many limitations to this study including a small sample size and unusable data due to incomplete surveys. However, we hope this study exemplifies that a well-implemented POCUS training can potentially encourage trainees everywhere to confidently incorporate POCUS in their own practices and improve overall patient care

An Avalanche Transistor-Based Pulse Generator Design For Infrared Laser Applications

This thesis details the design and results of a circuit intended for infrared laser applications, specifically for transcranial infrared light simulation (TILS) experiments and for use as a range finder. The circuit itself is comprised of a transistor, high voltage power supply, laser diode, capacitor, resistor, diode, and low voltage pulse. The design of a range finder is also developed. The range finder design is the same as the circuit developed for TILs with the addition of a few more components for receiving the returned light pulse such as a photodiode, op-amp, and comparator. The techniques used for a successful circuit design are described. For the TILS experiments the design must be able to output a very-high amplitude current pulse in a short amount of time, nanoseconds to picoseconds, to the laser diode. It is shown, and discussed, that the size of the capacitor, the value of the high voltage supply, and the switching characteristics of transistor used, determine the characteristics of the circuit’s output pulse. For the second design presented in this thesis, the range finder, the circuit operates by measuring the time difference, using an oscilloscope, between the output of the transmitter circuit and the output of the comparator. The comparator output is a square voltage pulse signifying a received laser pulse from the laser diode once the light reaches the photodiode. Once the time is measured it is used to calculate distance, where it is shown and discussed the range finder’s performance from distances of centimeters to meters

Preparation of quantum dots hydrogel nanocomposites with improved cytotoxicity

Nanocomposites are materials with unique properties and a wide range of applications. The combination of different nanostructures with traditional materials gives a variety of possibilities that should be analyzed. Especially, functional fluorescent semiconductor quantum dots (QDs) embedded in polymeric matrices have shown promising fluorescence and biocompatibility properties. These hybrid materials can be used in medical applications such as biodiagnostic and bioimaging. In this study, two hydrogels, one of polyethylene glycol diacrylate (PEGDA) and other of polyacrylamide (PAAm), were prepared with quantum dots of CdTe (4 nm of diameter) and characterized. The aim of this research was to analyze the optical properties of the nanocomposites and their cell viability. QDs nanocomposites were fabricated by a free radical polymerization process. The optical studies showed that the nanocomposites have well defined properties of fluorescence. To study the biocompatibility of the nanocomposites, metastatic B16f10 cell line were used and MTT assay was performed. The nanocomposites had a significant improved cell viability compared with QDs solutions