323,215 research outputs found
Acoustic properties of two emblematic theaters in Algeria: The case of the National Theater of Algiers TNA and the Regional Theater of Bejaia TRB
No full textIn this paper, the acoustics of multi-purpose colonial theaters in Algeria, those of Algiers and Bejaia, are studied to evaluate their acoustic conditions (suitability for music and speech) in view of their architecture's evolution. To do, acoustics measurements were performed inside them according to the ISO 3382-1 Standard in unoccupied conditions. The average values of acoustic parameters (EDT, T30, C80, and D50) are reported in frequency domain from 125 to 4 kHz. Furthermore, maps of spatial distribution of T30, C80 at the frequency of 1 kHz, and STI are reported. Results show that the Algiers theater is the more appropriate venue for multipurpose performances (with a fairly low RT of 1.5 s in average mid-frequencies), whereas the Bejaia theater is only suitable for musical performances (with a high RT of 2.5 s in average mid-frequencies)
Transformation process and induced comfort in the Ottoman houses
No full textThe old town of Algiers, known as the Casbah, is the product and the place of social relations, but also of
cultural models impregnated with history and intrinsic immaterial qualities. It is the manifestation of a
superposition of several strata in a complex and original system; it is the trace of successive occupations, the
collective memory which preserves and transmits the adopted or rehabilitated cultures to its ways of life. In
other words, it is a living whole that has withstood the wear and tear of time.
Algeria has a rich heritage, not only as a historical value and identity, but also for the different solutions used to
meet the environmental requirements and more precisely the needs of comfort.
The Casbah of Algiers is an eminent example of a traditional human habitat, representative of the deeply
Mediterranean culture, synthesis of numerous stratifications. It composed of the most interesting houses,
which have retained their authenticity and integrity, such as the aesthetic characteristics, the materials used
and the architectural elements, retaining their original aspects and expressing values that gave it a place in
World Heritage in 1992.
They have an old architecture that remains impressive and represents aspects of traditional vernacular
architecture, illustrated as an example of a perfect harmony in the built environment with the natural
environment, allowing a quality of comfort, ensuring a healthy and comfortable indoor environment.
During the colonial and postcolonial periods, it is clear that the houses of the Casbah of Algiers had a process of
transformation/modification that is still undergoing, due to the will of the inhabitants to rise to the standards
of modernity. These same transformations have certainly manifested themselves according to the needs, but
often at the expense of the environment. They are the result of the overlap and juxtaposition of architectural
models (local and colonial ones): each way of life reflects a historical period and a population that is constantly
changing.
This paper focuses mainly on the nature of transformations endured by the residential building of the old
Ottoman Algiers until now and analyses their impact on thermo-hygrometric comfort and indoor microclimate.
Our reflection is linked to concepts with multidisciplinary dimensions that flicker between history, architecture,
town planning, geography, socio-cultural, hydraulics and environment. In fact, the environmental issue is
becoming more and more dominant in the new orientations and concerns related to the improvement of
comfort conditions.
Therefore, the applied methodology is based on two approaches: a historical one, aiming to identify the
architectural changes into old Ottoman houses, transforming the space and the openings (patio or chebâk
roofing “it is a house with a courtyard that is either covered with a fence called chebâk, or discovered called
patio”, close off openings, ventilation, new openings, kitchens and bathrooms renovation, heating plant
system, etc.), and an environmental one in order to measure the effect of these transformations on the
thermo-hygrometric comfort. These practices have generated sometimes small or even enormous disorders,
which have brought changes also in the indoor comfort.
Archives consultation, field investigations, modeling and numerical simulations will be essential tools, which
will allow us to achieve the expected results. A detailed corpus, considering the least transformed houses to
the most transformed ones, will be presented, accompanied by an accurate evaluation of the parameters
influencing the thermo-hygrometric comfort
GPU-Enabled Multivariate Fox H-function Code
No full text<p>A GPU-enabled Matlab implementation of the multivariate Fox H-function. If you use this code of any (modified) part of it, please cite it as: H. Chergui, M. Benjillali and M.-S. Alouini, "Rician K-factor-based analysis of XLOS service probability in 5G outdoor ultra-dense networks," 2018. [Online]. Available: <a href="https://arxiv.org/abs/1804.08101">https://arxiv.org/abs/1804.08101</a></p>
Sub-cycle switching of a photonic bandstructure via ultrastrong light-matter coupling
No full textPhase-locked multi-terahertz transients map out the full photonic bandstructure of a one-dimensional photonic crystal while a 12-fs control pulse activates ultrastrong interaction on a sub-cycle time scale with quantized electronic transitions in semiconductor quantum wells. We trace the build-up dynamics of a large vacuum Rabi splitting and observe an unexpected asymmetric formation of the upper and lower polariton bands. The pronounced flattening of the photonic bands causes a slow-down of the group velocity by one order of magnitude on the time scale of the oscillation period of light
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)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Two dimensional ion-imaging of photofragments produced by photolysis of oriented molecules.
No full textAuthor's address:
No full textCan archives of audiovisual TV interviews be used to make authors more visible to students, and thereby reduce the learning gap between native and non-native language speakers in college classes? We examined students in a college course who learned about one scholar's ideas through watching an audiovisual TV interview (i.e., visible author format) and about another scholar's ideas through reading a formal text description (i.e., invisible author format). For the invisible author, native language speakers scored significantly higher than the non-native language speakers on a corresponding exam question (i.e., a cognitive measure), generated more words on the exam question (i.e., a motivational measure), and mentioned the author's name more often in answering the exam question (i.e., an affective measure). For the visible author, the groups did not differ on any of these measures. These findings provide evidence for the idea that making the author visible through audiovisual TV interviews can eliminate the learning gap between native and non-native language speakers. 3 Universities around the world serve students who are non-native speakers of th
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