121,864 research outputs found
Enerji Performansı Gereksinimlerinin Optimum Maliyet Düzeyinin Türkiye'deki Örnek bir Ofis Binasında Yapılan İyileştirmeler için Hesaplanması
No full textCalculation of Cost Optimal Levels of Minimun Energy Performance Requirements for Retrofit Measures on an Examplar Office Building
No full textThe European Directive about “Energy Performance of Buildings” of 2010 (EPBD recast, 2010/31/EU) introduced the concept of cost optimal level of minimum building energy performance: energy analyses have to be coupled with economical assessments when a building is investigated. The design both of new buildings and of retrofitted existing buildings should be developed taking into account the results of the “cost optimal” analysis.
In this paper, an existing office building is studied: it is an exemplar Turkish office and it needs a renovation to reduce its energy consumption. Two different locations are considered: Ankara as a representative city of tempered dry climate and Antalya as a representative city of hot-humid climate of Turkey. After the illustration of the characteristics of the exemplar office and the definition of its total energy demand, a number of possible retrofit actions are listed and some specific packages of retrofit measures are selected and applied. The measures are addressed to the building envelope, to the heating/cooling systems and to the lighting system.
Potential energy savings are evaluated and the cost optimal analysis is carried out for each of the selected package.
Cost optimal levels, calculated with different period for the cost analysis, are highlighted and the results are critically discussed. Results mainly show the high influence of the imposed boundary conditions for the calculations: the assumptions have significant impact both for the energy and the cost calculation. As a consequence, the definition of a common approach is fundamental to avoid unrealistic and incomparable results
Analysis of impact of droplets on horizontal surfaces
No full textThis paper presents the results of an experimental investigation of droplets impacting on horizontal surfaces. The effects of the impact parameters on the droplet impingement are studied. The results are presented for different droplet Weber numbers, ranging from 50 to 1080 and for three liquids: water, isopropanol and glycerin. Four kinds of surfaces were used with characteristic wettability (given in terms of the contact angle): smooth glass, PVC, wax and rough glass. We studied in some detail the kinematics of the moving contact line during the spreading process. Particularly we are interested in the effects of the wettability of the wall by the liquid. The surface wettability has been observed to have a strong influence on the spreading of droplet in the later stages of the process. The results are presented in the form of charts describing the spreading diameter and apex height of droplets in terms of time.</p
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Iridium-catalyzed asymmetric hydrogenation : development of New N,P ligands and hydrogenation of alkenyl boronic esters
No full textThe aim of this thesis was the development of new N,P ligands for iridium-catalyzed asymmetric hydrogenations and evaluation of alkenyl boronic esters as substrates for this transformation. Initially, a concise synthetic route towards bicyclic pyridine-phosphinite ligand complexes was implemented. The middle section is mainly dedicated to structural modifications of the N,P ligand scaffold, in order to tune the activity and the selectivity. Those N,P ligand complexes were identified as a highly active and selective systems for the enantioselective hydrogenation of trisubstituted boronic esters. While on the other hand a member of the phosphinite-imidazoline ligand complexes provided the best results for the asymmetric reduction of terminal vinyl boronic esters. Finally the synthesis of those ligand complexes is described
Dissipative Range Scaling of Higher Order Structure Functions for Velocity and Passive Scalars
No full textDifferently to Kolmogorov's second similarity hypothesis, we find that the 2n-th order velocity and scalar structure functions scale with n-th order moment of the energy dissipation and the scalar dissipation, respectively. The origins of this scaling are analyzed by the transport equations of the fourth order velocity and scalar increment moments and by direct numerical simulations
Fast implementation of iterative adaptive approach for wideband unambiguous radar detection
No full textAccepted author manuscriptMicrowave Sensing, Signals & System
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