Implementation of Digital Modulator Using Digital Multiplier for Wireless Applications in Verilog and Cadence

AbstractThe digital communication is more advantageous than analog communication. Digital components and subsystems are easy to build than analog components. As the implementation in VLSI technology progressed, the cost of the integrated circuits is gradually reduced. The components used in digital communication systems are robust and insensitive to atmospheric conditions and ensures good protection against noise and interference. The digital design offers more flexibility than analog design. The proposed digital Quadrature Phase Shift Keying(QPSK)modulator is based on digital multiplier called booth multiplier. This work is simulatedin Integrated Simulated Environment (ISE), Incisive simulators of Xilinx9.1i and Cadence tool respectively. The code is synthesized using Cadence RTL compiler and implemented on Field Programmable Gate Array (FPGA) spatan3 kit. The performance parameters such as power, area, and timing are analyzed and compared. This proposal gives better results than the conventional method of using analog multiplier for QPSK system

Effect of pH and nanoclay content on the morphology and physicochemicalproperties of soy protein/montmorillonite nanocomposite obtained byextrusion

The present work attempts to clarify the influence of montmorillonite nanoclay content and pH on the me-chanical properties of extruded soy protein nanocomposites. The mechanical behaviour is dominated by theformation of positive synergies between protein and nanoclay above a nanoclay concentration threshold.Moreover, the presence of nanoclay can improve water uptake. The pH also exerts a strong influence on me-chanical and water absorption properties, although montmorillonite tend to reduce this effect.Eventually, this study put forward the feasibility of using a combination of soy protein and montmorillonite toobtain potentially attractive biodegradable nanocomposite materials, processed by means of a simple and easilyscalable twin-screw extruder.Junta de Andalucía (project TEP-6134)Ministerio de Economía y Competitividad (CTQ2015-71164-P

Compromiso organizacional basado en el modelo de Meyer y Allen en los colaboradores de un banco chiclayano, 2018.

El inicio de muchos cambios organizacionales, tras la fusión repentina de dos entidades financieras, provocó la desmotivación en el trabajo y confusión de identidad por parte de los colaboradores de un Banco Chiclayano, afectando negativamente el rendimiento de su talento humano y directamente en su compromiso para con la empresa. Es así que se plantea como propósito central en esta investigación, desarrollar una propuesta de mejora del compromiso organizacional en un Banco Chiclayano–2018. Asimismo, la presente investigación se basó en un estudio con un enfoque cuantitativo de alcance descriptivo y; diseño transversal y observacional. Para determinar el nivel de compromiso de los colaboradores del banco en estudio, se aplicó encuestas basadas en la Escala de Likert y entrevistas cuyos resultados están en torno a las tres dimensiones del Modelo de Allen y Meyer (De continuidad, Afectivo y Normativo) sobre una muestra de 35 colaboradores de un banco chiclayano, abarcando un periodo de análisis desde agosto a noviembre del 2018; de tal manera que se analice el nivel de estado de esta variable en relación a la población estudiada; la cual será validado vía el criterio de expertos. Para el procesamiento de datos se utilizó el programa Microsoft Office (Excel) y para efectos de validez del instrumento se utilizó el estadístico SMART SPPS. Posteriormente, se contrastará la hipótesis a través de técnicas descriptivas; a fin de conocer en qué nivel se encuentra el Compromiso Organizacional de los colaboradores de un Banco Chiclayano, 2018

Secondary School Students’ Construction and Interpretation of Statistical Tables

Research project PID2019-105601GB-I00/AEI/10.13039/501100011033 (Ministerio de Ciencia e Innovacion) research group FQM-126 (Junta de Andalucia, Spain), and scholarship ANID Number: 72190280.Understanding statistical tables is a main component of statistical literacy, although related research dealing with secondary school students is scarce. The purpose of this study was to investigate secondary school students’ performance when translating graphs to tables and then interpreting the resulting table. Using content analysis of the responses to a questionnaire given to a sample of Spanish students, we analysed the correctness of the constructed table, the semiotic conflicts that appeared in their construction, the interpretation of the table elements, the ability to argue on the basis of the information in the table, and the reading level exhibited by the student in this task. Most students correctly translated a pictogram to a frequency table, and a half of them a double bar graph to a two-way table. The main semiotic conflicts were misinterpretation of the icon in the pictogram and incorrect computation of marginal frequencies. About 40% of the sample correctly justified a statement using the data in the graph and then reached the upper reading level of the graph and table, but only a minority achieved that level when the question required knowledge of the context. The findings of the study suggested points to reinforce the teaching of statistical graphs and tables.Ministerio de Ciencia e Innovacion research group FQM-126 (Junta de Andalucia, Spain) PID2019-105601GB-I00/AEIANID 7219028

Star-shaped wheel for mechanical micro-Doppler modulation

This letter investigates the possibility of using deliberated geometries for rotating targets, which may improve the detectability and classification by means of its micro-Doppler signature. Beyond the signature provided by the rotation rate of the target, every particular geometry leads to specific and unique modulation waveforms that increase the information related to this target. Different star-shaped wheels with particular geometries have been designed demonstrating different reflection characteristics and modulation waveforms. The signature of these rotating star-shaped wheels has been measured in an anechoic chamber using a general-purpose 24 GHz frequency-modulated continuous wave (FMCW) radar platform and a detection algorithm based on the derivative of the cross-correlation is proposed to validate the proposed approach

Biorefinery concept in the meat industry: From slaughterhouse biowastes to superaborbent materials

The expansion of food production has a large environmental impact in many ways. More specifically, 30–40% of total food production is lost as wastes and/or by-products before it reaches the market. In this sense, blood is an inevitable by-product in the meat industry that typically consists of 3–5% of the total weight of the animal. The dry organic matter present in blood is mostly protein, which can be employed more efficiently as raw material in the development of biodegradable materials. In the present manuscript, the blood collected after slaughtering of Iberian pigs was centrifuged and the upper (i.e., plasma) and bottom (i.e., red cells) layers were separated. Three freeze-dried fractions were characterized and evaluated on terms of their potential in the field of bioplastics: whole blood, plasma and bottom layer. Albumin was detected clearly in the plasma fraction, while globulins in red cells. After their characterization samples were mixed thoroughly with glycerol and injection molded at 120 ◦C. Special applications may be proposed for every fraction (i.e., whole blood, plasma or red cells), as the materials displayed different properties depending on the raw material employed. Thus, plasma resulted in materials with a greater deformability and swelling capacity during immersion, resulting in superabsorbent materials when processed at milder conditions (80 ◦C)The authors acknowledge the projects PID2021-124294OB-C21 and PID2021-124294OB-C22 funded by MCIN/AEI/10.13039/ 501100011033/ and by “ERDF A way of making Europe” which sup- ported this study. K.C. and P.G. thank the Basque Government for BIOMAT funding (IT1658-22). The authors would like to thank the Spanish Ministerio de Universidades for the PhD grant PRE2019-089815 awarded to E. ´Alvarez-Castillo. The blood used was collected from a local slaughterhouse, Mataderos del Sur, S.A. Authors also would like to thank for kindly supplying the raw material employed in the study. The authors also acknowledge to the Microanalysis and Microscopy services from CITIUS (Universidad de Sevilla) for providing full access and assistance to equipment used

Microwave microphone using a general purpose 24 GHz FMCW radar

The usage of a commercial 24 GHz frequency-modulated continuous-wave (FMCW) radar sensor to retrieve sound signals is investigated in this article. Thanks to the great phase measurement capabilities of current radar sensors, low-frequency audio signals can be recovered by measuring the vibrations they induce in objects due to their pressure wave nature. To prove the concept, a sound emitted by a speaker is recorded by analysing the small-scale displacement of a reflective surface using a radar sensor originally devised for automotive and UAV applications at the 24 GHz ISM band

Estudio bibliográfico sobre la posible relación entre la regulación de la expresión de la ADN polimerasa theta y la desregulación metabólica en células tumorales

El cáncer es una patología que presenta una gran relevancia en nuestros días. Se caracteriza por que las células tumorales presentan un metabolismo diferente al de las células normales, ya que llevan a cabo una glucólisis anaeróbica, incluso en condiciones de normoxia, llamada “efecto Warburg” o disfunción mitocondrial ya que no tiene lugar el ciclo de Krebs ni se emplea la cadena transportadora acoplada a la fosforilación oxidativa en la mitocondria. Sorprendentemente, este metabolismo característico de las células tumorales no es llevado a cabo por las células normales exceptuando las células del testículo, tejido placentario y linfocitos. Además, se ha observado que las células tumorales presentan un aumento en la expresión de Pol θ, una ADN polimerasa que actúa en la reparación alternativa de extremos no homólogos o alt-NHEJ, y que es considerada como diana terapéutica. La característica de esta reparación es que a pesar de que repara las roturas de doble cadena para evitar la muerte celular, presenta una tasa de mutación muy elevada, lo que puede otorgar a las células tumorales nuevas características para la supervivencia, proliferación y migración. En el efecto Warburg se observa una reordenación del ciclo glucolítico potenciado por factores como HIF-1 o c-MYC, favoreciendo la obtención de lactato, 2 ATP y fuente de carbono para obtener intermediarios metabólicos utilizados para crecer y multiplicarse. Como consecuencia de ello, se elevan los niveles de ROS que son contrarrestados por la activación de PGC-1 α y de las enzimas antioxidantes. Los ROS provocan daño en el ADN el cual tiene que ser reparado. En este estudio se plantea la idea de que el aumento en la expresión de Pol θ y por tanto la reparación por alt-NHEJ, podría estar inducida por el efecto Warburg, la regulación del mismo o por las consecuencias de éste. La misma relación también podría observarse en las células normales que tienen elevada la expresión de Pol

Synthesis considerations for acoustic wave filters and duplexers starting with shunt resonator

This project presents a synthesis procedure for acoustic wave ladder filters and duplexers taking also into consideration the case of networks whose first resonator is in shunt configuration. The feasibility of these networks in terms of the phase of the filter function is investigated and a lowpass synthesis view of the issues that might arise is presented providing different approaches for designers to achieve feasible networks.Aquest projecte presenta una metodologia de síntesi de filtres i duplexors d'ona acústica en topologia d'escala tenint també en compte el cas de les xarxes que comencen amb un ressonador en paral·lel. La viabilitat d'aquestes xarxes s'investiga en termes de la fase de la funció de filtrat i s'aporta una visió de síntesi pas baix de les limitacions que poden aparèixer, proveint alhora diferents solucions perquè els dissenyadors puguin obtenir xarxes viables