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PublicationLa competitividad del sector agrícola( 1992-01-01)Amat y Leon Chávez, Carlos AlbertoEste trabajo presenta las condiciones en las que se desarrolla la actividad agrícola peruana y dentro de las cuales ésta deberá alcanzar niveles de competitividad internacional. Asimismo analiza las numerosas condiciones históricas -de índole tanto socioeconómica como legal e institucional- que han dificultado la formación de un espíritu empresarial auténticamente moderno en el agro peruano. Finalmente, se listan los riesgos y desafíos que enfrentará el sector agrícola en el año 2000. La condición fundamental para hacerlo con éxito –se concluye- consistirá en entender al agro desde una perspectiva sistemática.
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PublicationIntroducción propedéutica a la tutela procesal del medio ambiente en el Perú(Pontificia Universidad Católica del Perú, 2003-10-20)El artículo no presenta resumen.
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PublicationSentido de coherencia, afrontamiento y sobrecarga en cuidadores familiares de ancianos con enfermedad crónica( 2007)The purpose of this investigation was to evaluate the relationship between sense of coherence, coping strategies, and overwhelm in relative caregivers of elder people with chronic diseases. The instrument used was the “Family Coping Study” questionnaire, created by Franz Baro. The sample was made up of 74 Peruvians who take care of their aged relatives with dementia (44 cases) and other chronic diseases (30 cases). The reliability of the scales was verified using Cronbach’s Alpha and the item-test consistency. Results showed a high reliability. Median and the standard deviation of the studied variables were determined, as well as the Pearson correlation analysis. The main interest of this research was to establish if there’s a relationship between the sense of coherence of relative caregivers of elder people with chronic diseases and cope of stressing situations like taking care of these patients. The results showed a significant inverse relationship between “sense of coherence” and “overwhelm” variables. La investigación tuvo como objetivo evaluar la relación entre sentido de coherencia, estrategias de afrontamiento y sobrecarga en cuidadores familiares de ancianos con demencia senil y otras enfermedades crónicas; el instrumento utilizado, previa autorización del autor, fue el cuestionario “Family Coping Study”, creado por Franz Baro (ver Gallagher & cols., 1994). La muestra estuvo compuesta por un total de 74 cuidadores familiares peruanos de ancianos con demencia (n = 44) y otras enfermedades crónicas (n = 30). Se realizó la confiabilidad de las escalas mediante la prueba de consistencia Alpha de Cronbach y el ítem-test, obteniéndose alta confiabilidad. Se determinó la media y desviación estándar de las variables estudiadas, así como el análisis de correlación de Pearson. El propósito central de esta investigación fue establecer si existe relación entre el sentido de coherencia del cuidador familiar y la sobrecarga y el afrontamiento de situaciones estresantes como es cuidar a un anciano con enfermedad crónica. Se encontró que las variables “sentido de coherencia” y “sobrecarga” guardan una relación altamente significativa en forma inversa (p < 0,01).
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PublicationThe case of Siliadin v. France: Modern slavery, nation and supranational states, gender and power( 2012-01-01)The case of Siliadin v. France is a paradigmatic example of modern slavery in the twenty-first century, allowing us to make a reflection on the social symbolic patriarchal order, the nation and supranational state, the human rights, gender relations, capitalism, the racialized classification of work and what is called in Latin America as the coloniality of power. Previously, we will explain the facts and the judgment given by the European Court of Human Rights.
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PublicationDetecting Gender and Racial Discrimination in Hiring Through Monitoring Intermediation Services: The Case of Selected Occupations in Metropolitan Lima, Peru( 2012-02-01)
;Ñopo H. ;Saavedra J.Torero M.Inspired by audit studies methodology, we monitored a job intermediation service in Peru to detect gender and racial discrimination in hiring. We capture individual racial information using the approach of Ñopo, Saavedra, and Torero (2007), enabling a richer exploration of racial differences. Overall, the study finds discriminatory treatment in hiring only when comparing groups with extremely different observable racial characteristics. We detect discriminatory treatment for female Indigenous applicants in secretarial positions. In terms of aimed wages, females tend to ask for wages 7% below those of males with comparable skills (although this has no negative impact on wages at hiring). © 2011 Elsevier Ltd. -
PublicationEthno-racial identification in urban Peru( 2012-07-01)Oropesa R.This study examines ethno-racial identification among urban Peruvians, with special attention to those who are at risk of 'de-Indianizing'. Specifically, we use a nationally representative survey to describe how city residents classify themselves and how self-classifications are associated with primordial and circumstantial characteristics. Consistent with official statistics, a large majority identifies as mestizo. However, the share that self-identifies as indigenous is much smaller than expected from official language-based criteria or from appearance alone. Moreover, identification is rooted in primordial characteristics associated with descent and the family-of-origin's linguistic environment, particularly for those with indigenous ancestries. Identification is also linked to socio-economic circumstances and perceived discrimination. © 2012 Copyright Taylor and Francis Group, LLC.
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PublicationUltrahigh energy neutrinos at the pierre auger observatory( 2013-01-01)
;Abreu P. ;Aglietta M. ;Ahlers M. ;Ahn E.J. ;Albuquerque I.F.M. ;Allard D. ;Allekotte I. ;Allen J. ;Allison P. ;Almela A. ;Alvarez Castillo J. ;Alvarez-Muñiz J. ;Alves Batista R. ;Ambrosio M. ;Aminaei A. ;Anchordoqui L. ;Andringa S. ;Antičić T. ;Aramo C. ;Arganda E. ;Arqueros F. ;Asorey H. ;Assis P. ;Aublin J. ;Ave M. ;Avenier M. ;Avila G. ;Bäcker T. ;Badescu A.M. ;Balzer M. ;Barber K.B. ;Barbosa A.F. ;Bardenet R. ;Barroso S.L.C. ;Baughman B. ;Bäuml J. ;Beatty J.J. ;Becker B.R. ;Becker K.H. ;Bellétoile A. ;Bellido J.A. ;Benzvi S. ;Berat C. ;Bertou X. ;Biermann P.L. ;Billoir P. ;Blanco F. ;Blanco M. ;Bleve C. ;Blümer H. ;Boháčová M. ;Boncioli D. ;Bonifazi C. ;Bonino R. ;Borodai N. ;Brack J. ;Brancus I. ;Brogueira P. ;Brown W.C. ;Bruijn R. ;Buchholz P. ;Bueno A. ;Burton R.E. ;Caballero-Mora K.S. ;Caccianiga B. ;Caramete L. ;Caruso R. ;Castellina A. ;Catalano O. ;Cataldi G. ;Cazon L. ;Cester R. ;Chauvin J. ;Cheng S.H. ;Chiavassa A. ;Chinellato J.A. ;Chirinos Diaz J. ;Chudoba J. ;Cilmo M. ;Clay R.W. ;Coluccia M.R. ;Conceição R. ;Contreras F. ;Cook H. ;Cooper M.J. ;Coppens J. ;Cordier A. ;Coutu S. ;Covault C.E. ;Creusot A. ;Criss A. ;Cronin J. ;Curutiu A. ;Dagoret-Campagne S. ;Dallier R. ;Daniel B. ;Dasso S. ;Daumiller K. ;Dawson B.R.De Almeida R.M.The observation of ultrahigh energy neutrinos (UHEs) has become a priority in experimental astroparticle physics. UHEs can be detected with a variety of techniques. In particular, neutrinos can interact in the atmosphere (downward-going ) or in the Earth crust (Earth-skimming ), producing air showers that can be observed with arrays of detectors at the ground. With the surface detector array of the Pierre Auger Observatory we can detect these types of cascades. The distinguishing signature for neutrino events is the presence of very inclined showers produced close to the ground (i.e., after having traversed a large amount of atmosphere). In this work we review the procedure and criteria established to search for UHEs in the data collected with the ground array of the Pierre Auger Observatory. This includes Earth-skimming as well as downward-going neutrinos. No neutrino candidates have been found, which allows us to place competitive limits to the diffuse flux of UHEs in the EeV range and above. © 2013 P. Abreu et al. -
PublicationDiagnostics barriers and innovations in rural areas: Insights from junior medical doctors on the frontlines of rural care in Peru( 2015-10-05)
;Huaynate C.F.A. ;Travezaño M.J.P. ;Malpartida H.M. ;Oberhelman R. ;Murphy L.L.Paz-Soldan V.A.Background: Worldwide, rural communities face barriers when accessing health services. In response, numerous initiatives have focused on fostering technological innovations, new management approaches and health policies. Research suggests that the most successful innovations are those involving stakeholders at all levels. However, there is little evidence exploring the opinions of local health providers that could contribute with further innovation development and research. The aims of this study were to explore the perspectives of medical doctors (MDS) working in rural areas of Peru, regarding the barriers impacting the diagnostic process, and ideas for diagnostic innovations that could assist them. Methods: Data gathered through three focus group discussions (FGG) and 18 individual semi-structured interviews (SSI) with MDS who had completed their medical service in rural areas of Peru in the last two years were analyzed using thematic analysis. Results: Three types of barriers emerged. The first barrier was the limited access to point of care (POC) diagnostic tools. Tests were needed for: i) the differential diagnosis of malaria vs. pneumonia, ii) dengue vs. leptospirosis, iii) tuberculosis, iv) vaginal infections and cervical cancer, v) neurocysticercosis, and vi) heavy metal toxicity. Ultrasound was needed for the diagnosis of obstetric and intra-Abdominal conditions. There were also health system-related barriers such as limited funding for diagnostic services, shortage of specialists, limited laboratory services and access to telecommunications, and lack of institutional support. Finally, the third type of barriers included patient related-barriers to follow through with diagnostic referrals. Ideas for innovations proposed included POC equipment and tests, and telemedicine. Conclusions: MDS at primary health facilities in rural Peru face diagnostic challenges that are difficult to overcome due to a limited access to diagnostic tools. Referrals to specialized facilities are constrained by deficiencies in the organization of health services and by barriers that impede the patients' travel to distant health facilities. Technological innovations suggested by the participants such as POC diagnostic tools and mobile-health (m-health) applications could help address part of the problem. However, other types of innovation to address social, adaptation and policy issues should not be dismissed.Scopus© Citations 39 -
PublicationIQ Publicacion de prueba 11/11/2022 para relación(lorito, 2016-03-01T00:00:00Z)
;Universidad Científica del Sur IQ CMUniversidad Científica del Sur IQ CMThe analysis of mesenchymal stromal cells secretome is fundamental to identify key players of processes involving these cells. Truly secreted proteins may be difficult to detect in MS based analysis of conditioned media (CM) due to proteins supplemented with fetal bovine serum (FBS). We compared different growth conditions to determine the effect of varying FBS concentration on the number and quantity of truly secreted human proteins contaminating bovine proteins. The results suggest that to minimize interference cells should be grown in presence of FBS until confluence and transferred into a serum-free medium prior to secretome collection. -
PublicationFabrication of Sub-10-nm Plasmonic Gaps for Ultra-Sensitive Raman Spectroscopy( 2016-12-29)
;Cetin A.E. ;Yilmaz C. ;Yilmaz G. ;Altug H.The past two decades have witnessed the explosion of activities in the field of surface enhanced Raman spectroscopy (SERS). SERS platforms employ nano-structures that excite plasmonic modes with large local electromagnetic fields localized within small gap spaces between each constituting feature. Although the research-oriented SERS platforms yield significant signal enhancements to identify even single molecules, practical SERS-based sensors have not been fully introduced yet. The main reason behind this absence is the need for a cost-effective and reliable manufacturing method for controllable fabrication of plasmonic nano-gaps over large areas. In this article, we introduced a novel manufacturing process that enables fast and scalable fabrication of highly uniform sub-10-nm gaps that could yield large SERS signals. In this process, a conventional electroplating technique is used to produce unique nano-mushroom antenna arrays on a conducting substrate, resulting in controllable gap spaces between mushroom heads. By understanding the nature of mushroom shape antenna formation, we demonstrated the control of inter-metallic gaps down to 5 nm. We showed that the manufactured nano-structures yield Raman enhancements more than 108. Providing such large SERS signals that are uniform over large areas, our cost-effective fabrication technique could be very critical to realize practical SERS devices.Scopus© Citations 14 -
PublicationUsability testing as a complement of heuristic evaluation: A case study( 2017-01-01)
;Vargas S. ;Moquillaza A. ;Fernández L.Paz F.The usability assessment of software systems is becoming more relevant, especially when it comes to web-based systems. A well-built and user-friendly website is capable of capturing a potential customer. There are different methods to evaluate usability, including heuristic evaluation and usability testing with users. In the present work, the critical functionalities of an airline’s website were evaluated, such as the purchase of tickets, flight reservations, among others. First, a heuristic evaluation was performed and then a usability test with users. The evaluations were developed in an academic context and the participants were postgraduate students of a university. The problems detected in the first evaluation served to define specific tasks in the usability test with users. In this way, the results of the evaluations were complemented.Scopus© Citations 9 -
PublicationSe cambian datos para utilizarlo en pruebas( 2017-07-18)Se modificaron datos para usarlo como prueba.
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PublicationModelo de gobernanza de articulación de la academia, el sector público y el sector empresarial para impulsar la investigación e innovación en la región Piura( 2017-08)
;Ipanaqué Alama, William ;REYNEL RODRIGUEZ CARLOS AUGUSTO -
PublicationDirect Measurement of Nuclear Dependence of Charged Current Quasielasticlike Neutrino Interactions Using MINERvA(Fondo Editorial de la PUCP, 2017-08-25)
;QUISPE MELGAR, HAROLD RUSBELTH ;Manrique Muñante, Rubén Eduardo ;QUISPE MELGAR, HAROLD RUSBELTHPontificia Universidad Católica del PerúCharged-current νμ interactions on carbon, iron, and lead with a final state hadronic system of one or more protons with zero mesons are used to investigate the influence of the nuclear environment on quasielasticlike interactions. The transferred four-momentum squared to the target nucleus, Q2, is reconstructed based on the kinematics of the leading proton, and differential cross sections versus Q2 and the cross-section ratios of iron, lead, and carbon to scintillator are measured for the first time in a single experiment. The measurements show a dependence on the atomic number. While the quasielasticlike scattering on carbon is compatible with predictions, the trends exhibited by scattering on iron and lead favor a prediction with intranuclear rescattering of hadrons accounted for by a conventional particle cascade treatment. These measurements help discriminate between different models of both initial state nucleons and final state interactions used in the neutrino oscillation experiments. © 2017 American Physical Society. © 2017 American Physical Society.Scopus© Citations 33 -
PublicationControl inteligente de sistemas e iluminación en edificios(Universidad Nacional de Piura, 2017-09-18)
;Huamán Rojas, Jezzy James ;Ipanaqué Alama, William ;GIACOMOTTI TUEZTA JOSE GUILLERMO ;Ausenco PerúAusenco PerúLa tesis desarrolla un controlador adaptativo para el control inteligente de la iluminación en cualquier ambiente, esto considera edificios, casas, oficinas, entre otros. Se presentan dos opciones de controlador y, para considerarlo un sistema inteligente, este se adapta al usuario haciendo uso de la tecnología de aprendizaje automático y regulable. Redes neuronales artificiales y árboles de decisión se emplean para adecuar la iluminación sin dejar de cumplir las normas que se establecen por función de los ambientes, en tanto se considera que la iluminación pueda verse afectada por muchos factores, incluyendo el color de las paredes y techos. Los controladores por tanto, no pueden ser del tipo estándar, es por ello que se ha desarrollado un controlador PID adaptativo, obteniéndose un sistema embebido como sistema de regulación y como controlador del nivel mínimo de iluminación un control PID adaptativo sin identificación. -
PublicationMortalidad y reclutamiento de árboles en un bosque secundario tardío del valle de Chanchamayo, Perú(Universidad Nacional Agraria La Molina, 2018)
;Giacomotti Tuezta,JoséReynel Rodríguez,CarlosEl presente estudio evaluó los parámetros de mortalidad y reclutamiento de la dinámica forestal en una parcela permanente de una hectárea ubicada en un área de bosque secundario tardío a 1158 msnm en el estrato premontano del valle de Chanchamayo ||The present study evaluated the parameters of mortality and recruitment of forest dynamics in a permanent plot of one hectare located in an area of late secondary forest at 1158 meters above sea level in the premontane stratum of the Chanchamayo valley.Scopus© Citations 11 -
PublicationA parametric 3D-printed body-powered hand prosthesis based on the four-bar linkage mechanism(Institute of Electrical and Electronics Engineers Inc., 2018)
;Bustamante M. ;Vega-Centeno R. ;Sánchez M.Mio R.The widespread of 3D-printing technology has resulted in the appearance of many open-source prosthetic hand models, especially for partial hand amputations. However, most of these designs are not editable and while some are parametric to some degree, customization for every user is limited to scaling the size of a base design. As consequence, most prostheses fail to closely match the user specific anthropometry and have poor aesthetics, which could result in abandonment of the device. Furthermore, achieving a high degree of customization could be a time-consuming task and requires previous knowledge of CAD design. This work presents a prosthetic hand easy to customize by changing parametric dimensions of the finger phalanges and palm on an Excel sheet. Additionally, the design tackles common issues from previous 3D-printed body-powered prosthetic hands by incorporating new features such as the use of linkages instead of cables as finger flexors and a new cable-adjusting system which requires no additional tools and makes the tensioning of finger tendons easier and quicker. © 2018 IEEE.Scopus© Citations 8 -
PublicationAutomatic classification of pediatric pneumonia based on lung ultrasound pattern recognition(Public Library of Science, 2018)
;Barrientos F. ;Barrientos R. ;Román-Gonzalez A. ;Pajuelo M.J. ;Anticona C. ;Mayta H. ;Alva A. ;Solis-Vasquez L. ;Figueroa D.A. ;Chavez M.A. ;Lavarello R. ;CASTAÑEDA APHAN, BENJAMIN ;Paz-Soldán V.A. ;Checkley W. ;Gilman R.H.Oberhelman R.Pneumonia is one of the major causes of child mortality, yet with a timely diagnosis, it is usually curable with antibiotic therapy. In many developing regions, diagnosing pneumonia remains a challenge, due to shortages of medical resources. Lung ultrasound has proved to be a useful tool to detect lung consolidation as evidence of pneumonia. However, diagnosis of pneumonia by ultrasound has limitations: it is operator-dependent, and it needs to be carried out and interpreted by trained personnel. Pattern recognition and image analysis is a potential tool to enable automatic diagnosis of pneumonia consolidation without requiring an expert analyst. This paper presents a method for automatic classification of pneumonia using ultrasound imaging of the lungs and pattern recognition. The approach presented here is based on the analysis of brightness distribution patterns present in rectangular segments (here called “characteristic vectors“) from the ultrasound digital images. In a first step we identified and eliminated the skin and subcutaneous tissue (fat and muscle) in lung ultrasound frames, and the “characteristic vectors”were analyzed using standard neural networks using artificial intelligence methods. We analyzed 60 lung ultrasound frames corresponding to 21 children under age 5 years (15 children with confirmed pneumonia by clinical examination and X-rays, and 6 children with no pulmonary disease) from a hospital based population in Lima, Peru. Lung ultrasound images were obtained using an Ultrasonix ultrasound device. A total of 1450 positive (pneumonia) and 1605 negative (normal lung) vectors were analyzed with standard neural networks, and used to create an algorithm to differentiate lung infiltrates from healthy lung. A neural network was trained using the algorithm and it was able to correctly identify pneumonia infiltrates, with 90.9% sensitivity and 100% specificity. This approach may be used to develop operator-independent computer algorithms for pneumonia diagnosis using ultrasound in young children. © 2018 Correa et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Scopus© Citations 61 -
PublicationNew atanatolica species from Ecuador (Trichoptera, leptoceridae)(Pensoft Publishers, 2018)
;Rázuri-Gonzales E ;Holzenthal R.WRíos-Touma B.Four new species of Atanatolica Mosely are described from Ecuador: A. andina sp. n., A. angulata sp. n., A. curvata sp. n., and A. decouxi sp. n. These species belong to the A. dominicana group and constitute new records of the genus from Chimborazo, Imbabura, and Napo Provinces. Additionally, A. andina sp. n. represents the highest elevation recorded for any species in the genus at 3900 m. Size class data are also presented suggesting continuous larval growth for the probable larva of A. decouxi sp. n., described and illustrated here. A new distribution record is provided for A. manabi from Carchi Province.Scopus© Citations 1 -
PublicationImproving Traffic: Simulation with Smart Traffic Lights( 2018-01-01)
;Carpio-Ali L. ;Oviedo-Meneses A. ;Reynozo-Torres S. ;Tejada-Espinoza A.This article describes the research carried out in the field as part of the search for solutions to traffic congestion in a Latin American city. The objective of the research is to identify whether smart traffic lights can make any difference in the average speed of vehicles. First, an area that experts and citizens consider a zone of vehicular congestion is identified. Then data is collected on the number of vehicles and the speed at which they circulate as well as the behavior of the current traffic lights. With the help of simulation software, the current situation is modeled as well as a new scenario using intelligent traffic lights that can vary their behavior to optimize speed. The results of the investigation indicate that the use of intelligent traffic lights does have a small positive effect on the average speed and therefore it is an alternative for improvement.