Software Architecture

What is software architecture? A clear and simple definition is that software architecture is about making important design decisions that you want to get right early in the development of a software system because, in the future, they are costly to change. Being a good software architect is not easy. It requires not only a deep technical competency from practicing software architecture design in industry, but also an excellent understanding of the theoretical foundations of software architecture are gained from doing software architecture research. This chapter describes some significant research, development, and education activities that the author has performed during her professional trajectory path to develop knowledge, skills, and experiences around this topic.

Efficiency of banks in Croatia

Croatian banking sector amounts to the majority of its financial sector. Therefore, it is necessary that Croatian banks operate efficiently. In the past two decades, the Croatian banking sector went through a consolidation process that steadily decreased the number of banks and allocated the majority of assets and market share to a few large banks. A simple definition of efficiency is cost minimization and profit maximization. Therefore, a bank is efficient when it strives to minimize its costs while maximizing its profits. This paper aims to estimate efficiency of Croatian banks using the DEA methodology within the period 2014-2019. In addition, the performance indicators (return on assets, return on equity) calculated for the same period aim at comparing performance indicators to efficiency results. The results indicate that larger banks are generally more efficient in operating on the frontier. And, in comparison to performance indicators, they achieve higher levels of returns on assets and equity. Furthermore, some small banks tend to be efficient, while the benefits of being a medium bank are inconclusive since the results reveal that some medium banks have below average efficiency. Overall, average efficiency improved in the observed period, which means that the consolidation process of financial institutions creates large and efficient banks.

Self-Education and Late-Learners in The Attic Nights of Aulus Gellius

<p>This thesis was motivated by expressions of self-education during the early Roman Empire, an unusual topic that has never before been studied in detail. The elite cultural perspective nearly always ensured that Latin authors presented the topos of self-education as a case of social embarrassment or status dissonance that needed to be resolved, with these so-called autodidacts characterised as intellectual arrivistes. But the material remains written by self-educated men and women are expressed in more personal terms, complicating any simple definition and hinting at another side. The first half of this thesis builds a theory of self-education by outlining the social structures that contributed to the phenomenon and by investigating the means and the motivation likely for the successful and practical-minded autodidact. This framework is influenced by Pierre Bourdieu, whose work on culture, class, and education integrated similar concerns within a theory of habitus. As with other alternatives to the conventional upbringing of the educated classes, attempts at self-education were inevitable but ultimately futile. An autodidact by definition missed out on the manners, gestures, and morals that came with the formal education and daily inculcation supplied by the traditional Roman household. In most instances it is unlikely that education could ever have contributed to social mobility. The latter half of this thesis treats Gellius's Attic Nights as a case study of self-education on two levels. A self-consciously recherche miscellany, the Nights at once encourages respectable gentlemen to improve themselves with a short-cut to culture, yet also humiliates any socially marginal figures attempting to educate themselves. This process reproduces the social order by undermining the integrity of any rivals to the elite cultural model while at the same time lionising the author and members of his circle as intellectual 'vigilantes'.</p>

Self-Education and Late-Learners in The Attic Nights of Aulus Gellius

<p>This thesis was motivated by expressions of self-education during the early Roman Empire, an unusual topic that has never before been studied in detail. The elite cultural perspective nearly always ensured that Latin authors presented the topos of self-education as a case of social embarrassment or status dissonance that needed to be resolved, with these so-called autodidacts characterised as intellectual arrivistes. But the material remains written by self-educated men and women are expressed in more personal terms, complicating any simple definition and hinting at another side. The first half of this thesis builds a theory of self-education by outlining the social structures that contributed to the phenomenon and by investigating the means and the motivation likely for the successful and practical-minded autodidact. This framework is influenced by Pierre Bourdieu, whose work on culture, class, and education integrated similar concerns within a theory of habitus. As with other alternatives to the conventional upbringing of the educated classes, attempts at self-education were inevitable but ultimately futile. An autodidact by definition missed out on the manners, gestures, and morals that came with the formal education and daily inculcation supplied by the traditional Roman household. In most instances it is unlikely that education could ever have contributed to social mobility. The latter half of this thesis treats Gellius's Attic Nights as a case study of self-education on two levels. A self-consciously recherche miscellany, the Nights at once encourages respectable gentlemen to improve themselves with a short-cut to culture, yet also humiliates any socially marginal figures attempting to educate themselves. This process reproduces the social order by undermining the integrity of any rivals to the elite cultural model while at the same time lionising the author and members of his circle as intellectual 'vigilantes'.</p>

Amplituhedron-like geometries

We consider amplituhedron-like geometries which are defined in a similar way to the intrinsic definition of the amplituhedron but with non-maximal winding number. We propose that for the cases with minimal number of points the canonical form of these geometries corresponds to the product of parity conjugate amplitudes at tree as well as loop level. The product of amplitudes in superspace lifts to a star product in bosonised superspace which we give a precise definition of. We give an alternative definition of amplituhedron-like geometries, analogous to the original amplituhedron definition, and also a characterisation as a sum over pairs of on-shell diagrams that we use to prove the conjecture at tree level. The union of all amplituhedron-like geometries has a very simple definition given by only physical inequalities. Although such a union does not give a positive geometry, a natural extension of the standard definition of canonical form, the globally oriented canonical form, acts on this union and gives the square of the amplitude.

Defining NASH from a Multi-Omics Systems Biology Perspective

Non-alcoholic steatohepatitis (NASH) is a chronic liver disease affecting up to 6.5% of the general population. There is no simple definition of NASH, and the molecular mechanism underlying disease pathogenesis remains elusive. Studies applying single omics technologies have enabled a better understanding of the molecular profiles associated with steatosis and hepatic inflammation—the commonly accepted histologic features for diagnosing NASH, as well as the discovery of novel candidate biomarkers. Multi-omics analysis holds great potential to uncover new insights into disease mechanism through integrating multiple layers of molecular information. Despite the technical and computational challenges associated with such efforts, a few pioneering studies have successfully applied multi-omics technologies to investigate NASH. Here, we review the most recent technological developments in mass spectrometry (MS)-based proteomics, metabolomics, and lipidomics. We summarize multi-omics studies and emerging omics biomarkers in NASH and highlight the biological insights gained through these integrated analyses.

The Arctic has warmed four times faster than the globe since 1980

In recent decades, the warming in the Arctic has been much faster than in the rest of the world, a phenomenon known as Arctic amplification (AA). Numerous studies report that Arctic is warming either twice, more than twice, or even three times as fast as the globe on average. However, the lack of consensus of AA definition precludes its precise quantification. Here we show, by using several observational datasets which cover the Arctic region and adopting a simple definition of AA, that during the last 40 years the Arctic has been warming almost four times faster than the globe as a whole, which is a higher ratio than generally reported in literature. Furthermore, we compared the observed AA ratio to the ratio simulated by state-of-the-art climate models, and show that the models largely underestimate the present AA, a finding that is not very sensitive to the exact definition of AA. The underestimation of AA by climate models most likely results from their inability to realistically simulate feedback mechanisms between sea ice melt and atmospheric temperatures. Our results imply that the underestimated AA leads to biased projections of climate change both in the Arctic and mid-latitudes.

Packing up the Past: Vicki Baum’s Quest for Heimat

The best-selling Austrian novelist Vicki Baum took ship alone for America in 1932 but emigration soon became exile for the Jewish author. The feeling of ‘Heimatlosigkeit’, or rootlessness, which oppressed Baum at that time was emotional and spiritual rather than physical. Child of a Jewish immigrant family in the anti Semitic society of nineteenth-century Vienna, Vicki Baum had long questioned the loci and the politics of Heimat, a German term whose significance far exceeds the simple definition of home or homeland. Cut loose from Heimat, she began her travels to far-away destinations, seeking to identify a common humanity and the universal moralities which could guide Europe to a better future. She wrote her travel experiences into novels which allowed her to narrate the landscapes and customs but also the inner lives of the peoples she encountered. A long-standing belief in the inauthenticity of verbal communication encouraged her to transcend linguistic barriers with confidence but it was her gender, she believed, which enabled her to share and interpret other cultures. Commonality rather than difference is the focus of her travel-letters and their fictional transpositions. Focusing on Baum’s experiences on Bali seen in a postcolonial perspective, the article argues that the island was for the novelist a space of transcendence, where the inhabitants held on to values already lost in Western societies.

Virtual Personal Assistant for Desktop Automation using Selenium

In recent years, Virtual Personal Assistants(VPA) have worked with utmost efficacy sorting out queries and specific tasks posted by the individual users on the website by AI and Natural Language Processing . VPA developers develop functions to either scrape the query result from the Internet. The result data include copious formats from a simple definition in Wikipedia to complex calculations or recommendations. However, VPA’s designed for desktops do not work as extensively as the VPA’s featuring in the smart phones . They do not provide a complete automation of desktop websites due to continuous and frequent development. The current desktop personal assistant’s can show you the top results of the query ‘Biryani’, but cannot order on behalf of you. In this study, we propose a Virtual Personal Assistant ARCHER for desktop automation using Selenium by using the specifications of the behavior data of websites.