192 research outputs found

    Latina/o Immigrant Parents Becoming Better Advocates for their Middle School Aged Adolescents

    Get PDF
    The purpose of this project is to provide Latina/o parents with different tools and strategies to better advocate for their children in the American school system. The 9-session program is specifically targeted for Latina/o parents of children in the middle school years that are going through the challenging transition to adolescence. Through Solorzano’s (2001) Latina/o Critical Race Theory lens, parents are asked to reflect, analyze, and conclude on different topics dealing with their children’s development in education. More specifically the cultural and language barriers within the school system, the traditional and non-traditional forms of parent engagement, various channels that exist to communicate with teachers and school administration, and the importance of their voice and story. Throughout the 9-session program Latina/o parents are presented with short ESL lessons. These lessons are relevant to the session’s theme and are useful to parents in their involvement with their child’s educational development. As well as, are provided with mini lessons on using technology as a resource to find further information and communicate with teachers and staff

    Aplicación de herramientas de calidad para la identificación de un proyecto de ahorro para la elaboración de productos higiénicos en Essity, PC Bowling Green

    Get PDF
    El presente trabajo aplica la herramienta de calidad DMAIC para la identificación de un proyecto de ahorro en la empresa enfocada a la fabricación de productos higiénicos. El objetivo fue ahorrar 5% anual en el uso de material de adhesivo en la línea de producción de pants. Una vez que realizadas las gráficas de control para el análisis de la situación actual y se hace una medición de esta, se llega a la conclusión que el cambiar de proveedor en el material adhesivo genera el ahorro del 5% en el material, este cambio no afectó la calidad y el desempeño del producto.ITESO, A. C

    Global search methods for nonlinear optimisation: a new probabilistic-stochastic approach

    Get PDF
    In this work the problem of overcoming local minima in the solution of nonlinear optimisation problems is addressed. As a first step, the existing nonlinear local and global optimisation methods are reviewed so as to identify their advantages and disadvantages. Then, the major capabilities of a number of successful methods such as genetic, deterministic global optimisation methods and simmulated annealing, are combined to develop an alternative global optimisation approach based on a Stochastic-Probabilistic heuristic. The capabilities, in terms of robustness and efficiency, of this new approach are validated through the solution of a number of nonlinear optimisation problems. A well know evolutionary technique (Differential Evolution) is also considered for the solution of these case studies offering a better insight of the possibilities of the method proposed here.Postprint (published version

    A Multi-Stage CTLE Design and Optimization for PCI Express Gen6.0 Link Equalization

    Get PDF
    The continuously increasing bandwidth demand from new applications has led to the development of the new peripheral component interconnect express (PCIe) Gen6, reaching data rates of 64 giga-transfers per second (GT/s) and adopting the pulse amplitude modulation 4-level (PAM4) signaling scheme. While PAM4 solves the bandwidth requirements, it brings new challenges for the physical channel design. PAM4 is more susceptible to errors due to various noise sources caused by reduced voltage (and timing) ranges, yielding a higher bit error rate (BER). It also introduces new challenges in slicers, transition jitter, and equalizers, making of equalization (EQ) a critical process for PAM4 signaling. In this paper, we propose a multi-stage continuous-time linear equalizer (CTLE) with high-band, mid-band, and low-band frequency boost stages to deal with highly lossy channels. Given the complexity of EQ of multi-level signals, optimization techniques are used, including an efficient optimization of the transmitter finite impulse response (FIR) filter and the receiver CTLE tuning.ITESO, A.C

    Müller cyst: report of a case in pregnancy

    Get PDF
    Müller cysts are alterations in the development of sexual cords and remain as malformations associated with them. They can occur in many morphological varieties. In the case of pregnancy, vaginal tumors can complicate labor because they cause obstruc-tion of the canal. During labor, these alterations can complicate the diagnosis and proper management of pregnancy. A 22-year-old female, who came to the hospital at 30.1 weeks of gestation for the first time, due to obstetric pain, vaginal tumor was detected, the patient triggered preterm labor, which did not address medical management based on oral and intravenous uteroinhibitors, so a cesarean is decided, later in the puerperium magnetic resonance was performed finding a defect in the vaginal wall, compatible with probable Müller's cyst. Due to its low frequency but high impact on pregnancy, vaginal tumors are a diagnostic and therapeutic challenge, due to their embryological origin should be detected and advise on the consequences of them. As a result, some other alterations may coexist, which is why complementary studies are essential. In the pregnancy protocol, the proper location of the cysts guides us to a specific embryological origin, as well as a preventive intervention can be planned in cases like this. If these patients are asymptomatic, surgical intervention is not required, much less during pregnancy unless an obstetric indication for interruption is determined

    Pickering Water‐in‐Oil Emulsions Stabilized Solely by Fat Crystals

    Get PDF
    Water-in-oil (W/O) emulsions have attracted heightened attention because of the ever-increasing interest in using non-calorific water to replace calorie-dense fat in food. However, designing clean-label and ultra-stable W/O emulsions is a longstanding challenge in colloid science. Herein, a novel, facile approach is introduced to designing cocoa butter (CB)-based crystals to stabilize Pickering W/O emulsions. Results using a combination of small- and wide-angle X-ray scattering and microscopy across length scales reveal that the fat crystals formed in an oleogel of CB with vegetable oil offer high stability to water droplets (up to 60% (v/v)) against coalescence and phase inversion, over storage for 7 months. Such extraordinary stability is attributed to the nanoplatelet-like CB crystals of βV polymorph located at the water–oil interface and to the inter-droplet fat crystal network formation, interlocking the water droplets. The increment in water volume fraction endows gel-like properties with the water droplets acting as “active fillers.” These newly designed Pickering W/O emulsions stabilized solely by fat crystals with unusual rigidity offer great promise for fabricating advanced functional materials in food, pharmaceutics, and cosmetic applications, where long-term stabilization of water droplets using sustainable particles is a necessity

    A simulation environment for studying transcutaneous electrotactile stimulation

    Get PDF
    Transcutaneous electrical nerve stimulation (TENS) allows the artificial excitation of nerve fibres by applying electric-current pulses through electrodes on the skin's surface. This work involves the development of a simulation environment that can be used for studying transcutaneous electrotactile stimulation and its dependence on electrode layout and excitation patterns. Using an eight-electrode array implementation, it is shown how nerves located at different depths and with different orientations respond to specific injected currents, allowing the replication of already reported experimental findings and the creation of new hypotheses about the tactile sensations associated with certain stimulation patterns. The simulation consists of a finite element model of a human finger used to calculate the distribution of the electric potential in the finger tissues neglecting capacitive effects, and a cable model to calculate the excitation/inhibition of action potentials in each nerve

    Long-Range Wireless Mesh Network for Weather Monitoring in Unfriendly Geographic Conditions

    Get PDF
    In this paper a long-range wireless mesh network system is presented. It consists of three main parts: Remote Terminal Units (RTUs), Base Terminal Units (BTUs) and a Central Server (CS). The RTUs share a wireless network transmitting in the industrial, scientific and medical applications ISM band, which reaches up to 64 Km in a single point-to-point communication. A BTU controls the traffic within the network and has as its main task interconnecting it to a Ku-band satellite link using an embedded microcontroller-based gateway. Collected data is stored in a CS and presented to the final user in a numerical and a graphical form in a web portal
    corecore