122,030 research outputs found
Four-dimensional imaging for radiotherapy planning in children and teenagers
No full textRespiratory-related organ motion (RROM) is a potential source of geometric uncertainty in RT planning and delivery. Approaches to mitigate its effects are well described in adults. For example, four-dimensional computed tomography (4DCT) mitigates the effects of RROM on image quality and motion-encompassing approaches to target volume delineation can incorporate individualised motion information from 4DCT into RT planning. This thesis explores the feasibility of adopting 4D imaging in children and teenagers for individualised motion assessment for radiotherapy planning. The feasibility of using 4DCT for upper abdominal motion assessment in children is assessed. Kidney motion is determined by extracting deformation vector field and centre of mass displacements from 4DCT datasets in 25 children. The effect of general anaesthetic on organ motion is examines as are potential associations between motion and patient related variables; age, height, weight and body surface area. Consideration of additional ionising radiation dose in children is important as children are inherently more sensitive to the deleterious effects of radiation exposure, in particular second malignancy induction. The feasibility of using 4DMR and ultrasound as alternative non-ionising imaging modalities for individualised motion assessment in children is explored. Feasibility and respiratory related organ displacements are presented per imaging modality and compared to 4DCT; the current gold standard for adult RT planning in tumour sites susceptible to RROM. The application of a respiratory motion encompassing RT planning technique is applied to upper abdominal neuroblastoma RT planning in children. The potential dosimetric benefits of using an internal target volume approach is described and compared to a conventional approach to RT planning. The introduction of advanced radiotherapy techniques in children often lags behind their adult counterparts. This thesis describes the feasibility of adopting individualised motion assessment in children and contributes to the understanding of RROM in children
Prehistoric sites near Nahal Lavan, Western Negev, Israel
No full textPhillips J., Bar-Yosef Ofer. Prehistoric sites near Nahal Lavan, Western Negev, Israel. In: Paléorient, 1974, vol. 2, n°2. pp. 477-482
Florus and Dio on the enslavement of the provinces
No full textThis paper draws attention to the unprecedented prominence of metaphors of enslavement to Rome in the historical narratives of Florus and Cassius Dio. Following an analysis of the thematic importance of the trope in their respective works, I point to further parallels in Herodian and Justin which suggest that the trope proved particularly productive in both Latin and Greek historiography in the late second and early third centuries CE. The end of the paper considers broader cultural developments that might underlie this phenomenon, notably the proliferation of dominus as an epithet for the emperor and the ongoing enfranchisement of provincials.Peer reviewe
Investigation of natural habitats of pearl oyster Pinctada radiata around the Lavan Island, northern Persian Gulf
No full textMohar pearl oyster Pinctada radiata is the dominant economic species of pearl oyster in the Persian Gulf, particularly along the Iranian coastal waters. As pearling has been banned since 2006, stocks of pearl oysters has not been investigated during these years. For this purpose, conditions of natural habitats and stocks of Mohar pearl oyster in its old catch sites were surveyed in the present study. Shallow waters around the Lavan island were searched through diving and two habitats of Mohar pearl oyster, namely Lavan No. 1 (Dardoor) and Lavan No. 2 (Hedabad), were detected. Area of Dardoor and Hedabad habitats was calculated equal to 60 and 15 ha, respectively and Mohar pearl oysters had the highest distribution in depth ranges of 7 to 12 m and 5 to 11 m, respectively. Total stocks of Dardoor and Hedabad habitats was surveyed about 357000 and 61500 pearl oysters of which 11% and 17% of oysters were catchable, respectively. Catch per unit of area in Dardoor and Hedabad habitats was estimated equal to 0.6 N/m2 and 0.4 N/m2 and catch per unit of effort was calculated equal to 119 N/hr and 82 N/hr, respectively. Biomass rate in these habitats was obtained equal to 4620 and 1163 kg, respectively. Results of this research revealed that the area, the amount of stocks and catch per unit of area of habitats has decrease in the recent years. Although the pearling has been banned in this region in the past seven years, restocking has been conducted slowly
Inflation Targets in a Global Context
No full textInflation targeting has become a global framework, used by countries of many different types and in all the continents of the world. To assess its global contribution, this paper uses one of the broadest ever surveys of monetary policy frameworks to construct an overall picture from the individual jigsaw pieces of framework characteristics. The jigsaw is made of targets and other measures of policy reaction, institutional characteristics such as independence, accountability and transparency, and analytical capacities within the central bank. The paper notes that the use of inflation targets has spread very rapidly in the 1990s, far more so than has the number of "inflation targeting" frameworks. The analysis focuses on the flexible use of inflation (and money) targets, and how these relate to indicators of each of central bank reaction functions, independence, accountability, transparency, and analytical methods. The use of targets appears to have built a strong momentum towards explanation of policy, and the use of inflation targets in particular has provided a vehicle for communication between central banks and governments and the private sector.
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
David M. Gwynn, Susanne Bangert, Luke Lavan (éd.), Religious Diversity in Late Antiquity, (Late Antique Archaeology, 6), Leiden – Boston, Brill, 2010
No full textGounelle Rémi. David M. Gwynn, Susanne Bangert, Luke Lavan (éd.), Religious Diversity in Late Antiquity, (Late Antique Archaeology, 6), Leiden – Boston, Brill, 2010. In: Revue d'histoire et de philosophie religieuses, 92e année n°4, Octobre-Décembre 2012. pp. 631-632
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)
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