Suchergebnisse

The incorporation of nanostructures in optoelectronic devices for enhancing their optical performance is widely studied. However, several problems related to the processing complexity and the low performance of the nanostructures have hindered such actions in real-life devices. Herein, a novel way of introducing gold nanoparticles in a solar cell structure is proposed in which the nanostructures are encapsulated with a dielectric layer, shielding them from high temperatures and harsh growth processing conditions of the remaining device. Through optical simulations, an enhancement of the effective optical path length of approximately four times the nominal thickness of the absorber layer is verified with the new architecture. Furthermore, the proposed concept in a Cu(In,Ga)Se2 solar cell device is demonstrated, where the short-circuit current density is increased by 17.4%. The novel structure presented in this work is achieved by combining a bottom-up chemical approach of depositing the nanostructures with a top-down photolithographic process, which allows for an electrical contact. ; This work was funded in part by the Fundação para a Ciência e a Tecnologia (FCT) under Grants IF/00133/2015, PD/BD/142780/2018 and SFRH/BD/ 146776/2019. The authors also want to acknowledge the European Union's Horizon 2020 Research and Innovation Programme through the ARCIGS-M project under Grant 720887, the Special Research Fund (BOF) of Hasselt University, the FCT through the project NovaCell (PTDC/CTM-CTM/28075/ 2017), and InovSolarCells (PTDC/FISMAC/29696/2017) co-funded by FCT and the ERDF through COMPETE2020. The authors also want to acknowledge Sandra Maya for the production of images used in this work. ; info:eu-repo/semantics/publishedVersion

Occupational fraud is a global problem that affects public and private organizations. One of the most common fraudulent activities in these organizations is corruption. Unfortunately, Puerto Rico is no exception. A review of the literature revealed that occupational fraud has increased in Puerto Rico since the 1980's. The main purpose of this article is to share some findings as purported by an investigation on corruption conducted in municipalities. Recommendations are offered to the government of Puerto Rico to prevent and combat corruption acts, according to the perception held by a group of external auditors who conducted compliance audits in the municipalities. The research was carried out mainly through a qualitative approach. It was intended to obtain a deep knowledge of an unfrequently research topic, which included the use of semi-structured interview conducted on experts, as the main strategy for data collection. ; El fraude ocupacional es un problema mundial que afecta las organizaciones públicas y privadas. Uno de los tipos principales de fraude ocupacional lo constituyen los actos de corrupción. Según la literatura, estos actos han aumentado en Puerto Rico a partir de la década de los 80. El propósito principal de este artículo es compartir algunos hallazgos relacionados con una investigación realizada sobre la corrupción en los municipios. Se ofrecen recomendaciones al gobierno de Puerto Rico para prevenir y combatir los actos de corrupción, de acuerdo con la percepción sostenida por un grupo de auditores externos, que realizaron auditorías de cumplimiento. La investigación se realizó principalmente mediante un enfoque cualitativo. Se pretendió obtener un conocimiento profundo de un tema poco estudiado, que incluyó el uso de la técnica de la entrevista semiestructurada realizada a expertos en el tema como estrategia principal para la recolección de datos.

In this article we intend to briefly approach the dismantling of the logocentric word that is articulated in the novel The Art of the Word by Enrique Lihn. We will give account of how the novel insists- above all- on the hidden aggression behind discourses, especially that of the paternalistic imposition of language and the authoritarian nature that constitutes it. We will see that -in the novel- these attributes will be represented by the character of the Protector. It will allude to the dictators who have affected Latin America and more specifically will be talking about the dictator, Augusto Pinochet. But also, it will give account of how the discourses sponsored by these dictators are nothing more than a neurotic repetition of the old foundational discourses. In this case, we will analyze the subversion that Lihn makes of the different Hispano-American essays that served to shape the cultural, political and educational structures that prevail -to a greater or lesser extent- up to our days and that are perpetuated in dictatorships such as Pinochet's. We will analyze how Miranda- fictional space of the novel- will become for us the representation of the obscurities of the Spanish-American collective personality and of those perversions that have not been assumed by the conscious, so that they continue to perpetuate themselves in time. The analysis we will make of some intertexts will invite us to remember at each step the character of construction that the discourses have and will invite us to problematize the places in which these are disarticulated and in which they come to degrade our category of person. ; En este artículo pretendemos aproximarnos brevemente al desmonte de la palabra logocéntrica que se articula en la novela El Arte de la Palabra de Enrique Lihn. Daremos cuenta de cómo la novela insiste -sobre todo- en la agresión escondida detrás de los discursos, especialmente el de la imposición paternalista del lenguaje y el carácter autoritario que lo constituye. Veremos que -en la novela- estos atributos estarán representados por el personaje del Protector. Este aludirá a los dictadores que han asolado Hispanoamérica y más específicamente a Augusto Pinochet. Sobre todo, dará cuenta de cómo los discursos patrocinados por estos dictadores no son más que una repetición neurótica de los antiguos discursos fundacionales. En este caso, analizaremos la subversión que hace de los distintos discursos ensayísticos hispanoamericanos que sirvieron a la conformación de las estructuras culturales, políticas y educacionales que prevalecen -en mayor o menor medida- hasta nuestros días y que se perpetúan en dictaduras como las de Pinochet. Analizaremos cómo Miranda -espacio ficcional de la novela- se irá convirtiendo en la representación de las oscuridades de la personalidad colectiva hispanoamericana y de aquellas perversiones que no han querido ser asumidas por el consciente, de modo que siguen perpetuándose en el tiempo. El análisis que haremos de algunos intertextos nos invitará a recordar a cada paso el carácter de construcción que tienen los discursos y nos invitará a problematizar los lugares en los que estos se desarticulan y en los que llegan a degradar nuestra categoría de persona.