Posición de México en el pilar de las instituciones y factores que inciden para hacer negocios: reflexiones acerca de la evaluación del WEF 2009-2018

Angel Licona Michel(Angel Licona Michel) 계명대학교 국제학연구소 2019 국제학논총 Vol.29 No.-

In the article an exploratory analysis is made about the evaluation made by the World Economic Forum to the institutions and their impact on the competitiveness to do business in Mexico. The main theoretical approaches of the institutions and their conceptual importance to give certainty in society with the policies, rules and laws were reviewed. It was found that in Mexico institutions in 2009 were in position 97 and by 2018 they had fallen to place 123, impacting confidence and competitiveness to do business in Mexico due to the growth of corruption, crime and theft.

The problems of the Asia-North America Container Routes

Esther RODRIGUEZ SILVA,Masayoshi KUBO,NAtalia Rivera Angel,Masako MURAYAMA 한국항해항만학회 2004 한국항해항만학회 학술대회논문집 Vol.5 No.-

There are two principal routes for the Asia-North america containerized cargo, that of Asia-West Coast and Asia-East Coast. On the West Coast, the Asia-Los Angeles, dominate the commerce, whereas on the Asia-East Coast it's the Panama Canal. Each of these routes has different characteristics. All are similar in that each is the door to the commerce of containerized cargo originating in Asia; each combines maritime and overland transportation; each has important intermodal connections and is able to distribute cargo throughout the West and East Coasts of the United States. Each route also has its port of preference that has the necessary infrastructure, equipment and intermodal connections. For example, in the case of the Port of Los Angeles, in spite of some of its advantages, it has several serious problems due to the interminable containerized cargo traffic that must be solved rapidly and satisfactorily in order to progress. In this paper, we would like to show the problems of two main routes.

Carbon Storage Regulator A (csrA) Gene Regulates Motility and Growth of Bacillus licheniformis in the Presence of Hydrocarbons

Angel, Laura Iztacihuatl Serrano,Segura, Daniel,Jimenez, Jeiry Toribio,Barrera, Miguel Angel Rodriguez,Pineda, Carlos Ortuno,Ramirez, Yanet Romero The Korean Society for Microbiology and Biotechnol 2020 한국미생물·생명공학회지 Vol.48 No.2

The global carbon storage regulator (Csr) system is conserved in bacteria and functions as a regulator in the exponential and stationary phases of growth in batch culture. The Csr system plays a role in the central carbon metabolism, virulence, motility, resistance to oxidative stress, and biofilm formation. Although the Csr was extensively studied in Gram negative bacteria, it has been reported only in the control of motility in Bacillus subtilis among Gram positive bacteria. The goal of this study was to explore the role of the csrA gene of Bacillus licheniformis M2-7 on motility and the bacterial ability to use hydrocarbons as carbon source. We deleted the csrA gene of B. licheniformis M2-7 using the plasmid pCsr-L, harboring the spectinomycin cassette obtained from the plasmid pHP45-omega2. Mutants were grown on culture medium supplemented with 2% glucose or 0.1% gasoline and motility was assessed by electron microscopy. We observed that CsrA negatively regulates motility by controlling the expression of the hag gene and the synthesis of flagellin. Notably, we showed the ability of B. licheniformis to use gasoline as a unique carbon source. Our results demonstrated that CsrA is an indispensable regulator for the growth of B. licheniformis M2-7 on gasoline.

Adaptive Non-singular Terminal Sliding Mode Control for an Unmanned Underwater Vehicle: Real-time Experiments

Miguel Angel Garcia Rangel,Adrian Manzanilla,Angel Eduardo Zamora Suarez,Filiberto Muñoz,Sergio Salazar,Rogelio Lozano 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.3

This research work focuses on the design of a robust-adaptive control algorithm for a 4DOF Unmanned Underwater Vehicle (UUV). The proposed strategy is based in a Non-Singular Terminal Sliding Mode Control (NTSMC) with adaptive gains, where the proposed adaptation mechanism ensures that the gains remain bounded. In this control strategy a non-singular terminal sliding surface is proposed to obtain a faster convergence of the tracking errors. The NTSMC ensures Practical Finite-Time Stability for the closed-loop system as well as exhibits a chattering reduction. In order to demonstrate the satisfactory performance of the proposed controller, a set of experiments was performed with a Non-singular Terminal Sliding Mode Controller and an Adaptive Non-Singular Terminal Sliding Mode Control (ANTSMC) in real time for trajectory tracking in the X-Y plane, the graphs showed that the ANTSMC converges faster to a smaller region and reduces oscillations.

Radiological Alert Network of Extremadura (RAREx) at 2021:30 years of development and current performance of real-time monitoring

María Angeles Ontalba,Jos e Angel Corbacho,Antonio Baeza,Jose Vasco,Jose Manuel Caballero,David Valencia,Juan Antonio Baeza 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.2

In 1993 the University of Extremadura initiated the design, construction and management of theRadiological Alert Network of Extremadura (RAREx). The goal was to acquire reliable near-real-timeinformation on the environmental radiological status in the surroundings of the Almaraz Nuclear Power Plant by measuring, mainly, the ambient dose equivalent. However, the phased development of thisnetwork has been carried out from two points of view. Firstly, there has been an increase in the numberof stations comprising the network. Secondly, there has been an increase in the number of monitoredparameters. As a consequence of the growth of RAREx network, large data volumes are daily generated. To face this big data paradigm, software applications have been developed and implemented in order tomaintain the indispensable real-time and efficient performance of the alert network. In this paper, the description of the current status of RAREx network after 30 years of design andperformance is showed. Also, the performance of the graphing software for daily assessment of theregistered parameters and the automatic on real time warning notification system, which aid with thedecision making process and analysis of values of possible radiological and non-radiological alterations,is briefly described in this paper.

Predicting the internal model of a robotic system from its morphology

Duran, Angel J.,del Pobil, Angel P. Elsevier 2018 Robotics and autonomous systems Vol.110 No.-

<P><B>Abstract</B></P> <P>The estimation of the internal model of a robotic system results from the interaction of its morphology, sensors and actuators, with a particular environment. Model learning techniques, based on supervised machine learning, are widespread for determining the internal model. An important limitation of such approaches is that once a model has been learnt, it does not behave properly when the robot morphology is changed. From this it follows that there must exist a relationship between them. We propose a model for this correlation between the morphology and the internal model parameters, so that a new internal model can be predicted when the morphological parameters are modified. Different neural network architectures are proposed to address this high dimensional regression problem. A case study is analyzed in detail to illustrate and evaluate the performance of the approach, namely, a pan–tilt robot head executing saccadic movements. The best results are obtained for an architecture with parallel neural networks. Our results can be instrumental in state-of-the-art trends such as self-reconfigurable robots, reproducible research, cyber–physical robotic systems or cloud robotics, in which internal models would available as shared knowledge, so that robots with different morphologies can readily exhibit a particular behavior in a given environment.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A model to correlate the morphology and internal model parameters for a robotic system is presented. </LI> <LI> Different neural network architectures are proposed to solve this regression problem. </LI> <LI> A case study is used to illustrate and evaluate the neural network proposed. </LI> <LI> Due to the properties of the maximum likelihood estimator, the best performance is reached with parallel neural network architectures. </LI> </UL> </P>

The Plant Growth-Promoting Fungus Aspergillus ustus Promotes Growth and Induces Resistance Against Different Lifestyle Pathogens in Arabidopsis thaliana

( Salas Marina Miguel Angel ),( Miguel Angel Silva Flores ),( Mayte Guadalupe Cervantes Badillo ),( Maria Teresa Rosales Saavedra ),( Maria Auxiliadora Islas Osuna ),( Sergio Casas Flores ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.7

To deal with pathogens, plants have evolved sophisticated mechanisms including constitutive and induced defense mechanisms. Phytohormones play important roles in plant growth and development, as well as in the systemic response induced by beneficial and pathogen microorganisms. In this work, we identified an Aspergillus ustus isolate that promotes growth and induces developmental changes in Solanum tuberosum and Arabidopsis thaliana. A. ustus inoculation on A. thaliana and S. tuberosum roots induced an increase in shoot and root growth, and lateral root and root hair numbers. Assays performed on Arabidopsis lines to measure reporter gene expression of auxin-induced/ repressed or cell cycle controlled genes (DR5 and CycB1, respectively) showed enhanced GUS activity, when compared with mock-inoculated seedlings. To determine the contribution of phytohormone signaling pathways in the effect elicited by A. ustus, we evaluated the response of a collection of hormone mutants of Arabidopsis defective in auxin, ethylene, cytokinin, or abscisic acid signaling to the inoculation with this fungus. All mutant lines inoculated with A. ustus showed increased biomass production, suggesting that these genes are not required to respond to this fungus. Moreover, we demonstrated that A. ustus synthesizes auxins and gibberellins in liquid cultures. In addition, A. ustus induced systemic resistance against the necrotrophic fungus Botrytis cinerea and the hemibiotrophic bacterium Pseudomonas syringae DC3000, probably through the induction of the expression of salicylic acid, jasmonic acid/ethylene, and camalexin defense-related genes in Arabidopsis.

Effect of condensed tannins from Leucaena leucocephala on rumen fermentation, methane production and population of rumen protozoa in heifers fed low-quality forage

Angel T. Pineiro-Vazquez,Jorge R. Canul-Solis,Guillermo O. Jimenez-Ferrer,Jose A. Alayon-Gamboa,Alfonso J. Chay-Canul,Armin J. Ayala-Burgos,Carlos F. Aguilar-Perez,Juan C. Ku-Vera 아세아·태평양축산학회 2018 Animal Bioscience Vol.31 No.11

Objective: The aim of the experiment was to assess the effect of increasing amounts of Leucaena leucocephala forage on dry matter intake (DMI), organic matter intake (OMI), enteric methane production, rumen fermentation pattern and protozoa population in cattle fed Pennisetum purpureum and housed in respiration chambers. Methods: Five crossbred heifers (Bos taurus×Bos indicus) (BW: 295±6 kg) were fed chopped P. purpureum grass and increasing levels of L. leucocephala (0%, 20%, 40%, 60%, and 80% of dry matter [DM]) in a 5×5 Latin square design. Results: The voluntary intake and methane production were measured for 23 h per day in respiration chambers; molar proportions of volatile fatty acids (VFAs) were determined at 6 h postprandial period. Molar concentration of VFAs in rumen liquor were similar (p>0.05) between treatments. However, methane production decreased linearly (p<0.005), recording a maximum reduction of up to ~61% with 80% of DM incorporation of L. leucocephala in the ration and no changes (p>0.05) in rumen protozoa population were found. Conclusion: Inclusion of 80% of L. leucocephala in the diet of heifers fed low-quality tropical forages has the capacity to reduce up to 61.3% enteric methane emission without affecting DMI, OMI, and protozoa population in rumen liquor.

Interference Priority: A New Scheme for Prioritized Resource Allocation in Wireless

Angel Lozano,Ezio Biglieri,Nabil Alrajeh 한국통신학회 2012 Journal of communications and networks Vol.14 No.5

A standard paradigm for the allocation of wireless resources in communication demands symmetry, that is, all users are assumed to be on equal footing and hence get equal shares of the system’s communication capabilities. However, there are situations in which “prime users” should be given priority, as for example in the transmission of emergency messages. We examine prioritization policies that could be implemented at the physical layer and propose a new one, termed interference priority (IP), which is shown to have excellent performance. We evaluate the performance of these prioritization techniques both in controlled settings and within the context of a full cellular system and discuss the impact of prioritized use of resources on the unprioritized users.

Long-Term Stroke Recurrence after Transient Ischemic Attack: Implications of Etiology

Angel Ois Santiago,Elisa Cuadrado-Godia,Eva Giralt-Steinhauer,Jordi Jimenez-Conde,Carolina Soriano-Tarraga,Ana Rodríguez-Campello,Carla Avellaneda,Diego Cascales,Isabel Fernandez-Perez,Jaume Roquer Go 대한뇌졸중학회 2019 Journal of stroke Vol.21 No.2

Background and Purpose To analyze long-term stroke recurrence (SR) characteristics after transient ischemic attack (TIA) according to initial etiological classification. Methods A prospective cohort of 706 TIA patients was followed up in a single tertiary stroke center. Endpoint was SR. Etiologic subgroup was determined according to the evidence-based causative classification system. Location of TIA and SR was recorded as right, left, or posterior territory. Disability stroke recurrence (DSR) was defined as modified Rankin Scale (mRS) score >1 or a onepoint increase in those with previous mRS >1 at 3-month follow-up. Results During a follow-up of 3,493 patient-years (mean follow-up of 58.9±35.9 months), total SR was 125 (17.7%), corresponding to 3.6 recurrences per 100 patient-years. The etiology subgroups with a higher risk of SR were the unclassified (more than one cause) and large-artery atherosclerosis (LAA) categories. Of the SR cases, 88 (70.4%) had the same etiology as the index TIA; again, LAA etiology was the most frequent (83.9%). Notably, cardioaortic embolism was the most frequent cause (62.5%) of SR in the subgroup of 24 patients with undetermined TIA. Overall, SR occurred in the same territory in 74 of 125 patients (59.2%), with significant differences between etiological TIA subgroups (P=0.015). Eighty-two of 125 (65.6%) with SR had DSR, without differences between etiologies (P=0.453). Conclusions SR occurred mainly with the same etiology and location as initial TIA, although undetermined TIA was associated with a high proportion of cardioaortic embolism SR. More than half of the recurrences caused some disability, regardless of etiology.