Selection of Materials for Double Layer Antireflection Coating of Silicon Solar Cell

In present work an attempt has been made to select material to design double layer antireflection coatings (DLARC) for silicon solar cell, theoretically. In this regard, silicon nitride (Si3N4) is used along with MgF2 and SiO2 to design DLARC to achieve zero reflectance over wide range of spectra. Reflection spectra for DLARC systems of MgF2/Si3N4 and SiO2/Si3N4 have been evaluated numerically using transfer matrix method (TMM). Further, reflectance for MgF2/Si3N4 is investigated at various monitoring wavelengths (o = 550, 600, 650 and 700 nm). Calculated reflectance has been used in PC1D simulator to study the effect of double layer antireflection coating on optical and electrical parameters of silicon solar cell. Simulation results shows, reduction in reflectance form > 30% down to zero in the wavelength range 500 – 700 nm with conversion efficiency 21.33% at 600 nm for MgF2/Si3N4.

Manuscripts, Papyri, and Epigraphy

This chapter explores issues concerned with both the classification and incorporation of papyrological and epigraphic material relating to the LXX, as well as the question of how this material has and should be used in critical discussions of relevant LXX texts. Papyrological discussion is focused on the Rylands Greek Papyrus 458, Papyrus Fouad 266, select Oxyrhynchus materials, and the Berlin Genesis. Epigraphic discussion of select material specifically highlights the value of the geographical demarcation they inherently provide. Avenues for further research are highlighted as 1) definition of an LXX quotation, 2) the continued need for work on the considerable unpublished material, and 3) methodological clarity on what constitutes material evidence as being classified as ‘Jewish’, ‘Christian’, or other.

Mass Emotions in Social Communication as a Resource for Strengthening Mass Media Impact

Current research on the issues of social communications pay little attention to the problem of mass emotions, despite the effect of “implicit presence” of this phenomenon in social communications. Characterizing the crowd and mass audience, the author’s previous researches show the important role of mass emotions as a tool that unites people in social communications, induces a centrifugal force that reformats “collective soul” of the audience to the state of “public opinion” through communication apperception. The objective of the study is to determine the tools of the process of the audience’ emotional massification and the mechanisms of explicit or implicit provocation of mass emotional outbursts through mass media impact. The methods of observation, description, comparison, generalization were used to achieve the goal. The method of observation was used to select material for the analysis of social phenomena, where it was potentially possible to state the media impact on the audience. The method of description was used to characterize the trends and features of increasing impacts on the audience at the peak of political discourses. The main results and conclusions of the study is the existence of cause and effect relationship of mass emotions in social communications, their interaction with mass information, mass interpretation, which confirm the threefold nature of modern social communication.

Um Modelo para Auxiliar a Descoberta e Classificação de Conteúdo para Ambientes Virtuais de Aprendizagem

The massive amount of information currently available on the Internetmakes it difficult for teachers to curate quality educationalcontent or to select material for self-regulated study by students.Aiming to facilitate these steps in the teaching and/or learningprocess this article presents an approach to assist the discovery ofeducational content from the hybrid recommendation system andlater classification from the feedback evaluation with sentimentanalysis techniques trained with the Re-Li corpus. This paper describesthe proposed model, the implementation of a prototype andits application in non-formal training involving 13 participants.

Interconnections for Additively Manufactured Hybridized Printed Electronics in Harsh Environments

The ability to fabricate functional 3D conductive elements via additive manufacturing has opened up a unique sector of ‘hybridized printed electronics’. In doing so, many of the rigid standards (i.e., planar circuit boards, potting, etc.,) of traditional electronics are abandoned. However, one critical challenge lies in producing robust and reliable interconnections between conductive inks and traditional hardware, especially when subjected to harsh environments. This research examines select material pairings for the most resilient interconnection. The method of test is wire bond pull testing that would represent a continuous strain on a connection and high acceleration testing of up to 50,000 g that would represent a sudden shock that electronics may experience in a drop or crash. Although these two environments may be similar to an overall energy exerted on the connection, the rate of force exerted may lead to different solutions. The results of this research provide insight into material selection for printed electronic interconnections and a framework for interconnection resiliency assessment, which is a critical aspect in realizing the production of next generation electronics technologies for the most demanding environments.

Optimization of Masking Process of Steel Tube During Atmospheric Plasma Spraying, for Use in Serial Production

This study deals with the influence of selected technological factors on hardness, surface quality and topography of substrates after 24 layers of NiCr plasma was self-peeled off. The paper also deals with frequency of self-peeling the layers and the SEM observation of the deposited layers and substrates. Presented procedures and experimental results demonstrate changes and resistance of individual materials after an application of 24 plasma coatings. Samples from materials duralumin, chromium steel and material with the coating Ni-Cu-Ni were tested. The least impact for surface changes of substrate had samples from chromium steel. For this reason, chromium steel samples were also tested and compared for self-peeling frequency with respect to the number of coating layers and angle of surface. The main objective of this work was to select material, angle of plasma spraying and surface cleanliness that will show the least change in hardness and roughness after multiple plasma spraying with respect to the longest life of the cover mask. Cover mask is necessary for covering required areas of steel tube that must not be affected by plasma spraying, for use in serial production.

Comic Glory (and Guilt)

This chapter covers the late twentieth- and early twenty-first-century shift toward a new brand of postassimilatory and postfeminist joke-work. It highlights select material by celebrity Jewish female comics from the 1990s though the present. An “appropriative license” of select comic material conjoins the reappropriative and misappropriative effects of women performing Jewishly in a zeitgeist of American comedy. Self-ironizing performances by Sandra Bernhard, Sarah Silverman, and Broad City’s Abbi Jacobson and Ilana Glazer illustrate how comics slide among race, gender, and sex identities to play up their progressive politics and white guilt in an era of newfound access to mainstream comedy.

Video in Sociomaterial Investigations

This article considers the application of video-based research to address methodological challenges for organizational scholars concerned with the sociomaterial foundations to work practice. In particular the claim that “all practices are always sociomaterial” raises a “problem of relevance”—that is, on what grounds can we select material to include in the analytic account when there is a vast array of material in each setting? Furthermore, how can we grasp the sociality of material objects that are often taken for granted and that drift in and out of view? We address these methodological questions drawing on ethnomethodology and conversation analysis, and by making use of video recordings of everyday work and organizing. We demonstrate the approach with data from two service settings and explore the analysis both of single cases and collections. To conclude, the article considers the distinctive contributions that these video-based studies have for our understanding of sociomateriality and organizational practice more generally.

Ban Gu: copyist, creator and critic

Ban Gu's compilation of the Han shu may be seen in the context of a number of intellectual and religious developments. By his time the idea of the Tian ming and the theory of the Wu xing were being applied to imperial times. Officials were quoting the sayings of Kongzi to support their arguments, and the writings of distinguished scholars such as Jing Fang, Liu Xiang, Liu Xin and Yang Xiong were well known. The religious controversies that had begun in the reign of Chengdi had died down. The pursuit of scholarship had received a new impetus thanks partly to the discussions held in 79 ce. Ban Gu drew somewhat freely on existing literature, being prudent to select material that would not arouse enmity; his sister called on official documents to complete her part of the history. As an innovator Ban Gu introduced chapters on subjects that had not been treated in the Shi ji, such as bibliography and the laws. Ready to criticize the actions of officials or the character of an emperor openly, he also contrived to do so implicitly.

Talk from the Perspective of Petrology Carving Stone

This article selects the typical carving stone as the research object. We make an discuss about the factors affecting the effect of seal cutting art of using saber from the perspective of petrology through the conditions of seal cutting stone material, color, hardness, transparency and so on. Making an analyze about the adaptability to seal cutting stone and the stone material impact bit broken seal treatment , in order to select material of seal cutting lovers with reference.