bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between aerodynamic forces, flow structures and wing camber for rotating insect wing planforms
Authors: Harbig R. R. , Sheridan J. , Thompson M. C. 
Published: July 2013

AbstractWing deformation is observed during the flight of some insect species; however, the effect of these distorted wing shapes on the leading edge vortex (LEV) is not well understood. In this study, we investigate the effect of one of these deformation parameters, (rigid) wing camber, on the flow structures and aerodynamic forces for insect-like wings, using a numerical model of an altered fruit fly wing revolving at a constant angular velocity. Both positive and negative camber was investigated at Reynolds numbers of 120 and 1500, along with the chordwise location of maximum camber. It was found that negatively cambered wings produce very similar LEV structures to non-cambered wings at both Reynolds numbers, but high positive camber resulted in the formation of multiple streamwise vortices at the higher Reynolds number, which disrupt the development of the main LEV. Despite this, positively cambered wings were found to produce higher lift to drag ratios than flat or negatively cambered wings. It was determined that a region of low pressure near the wing’s leading edge, combined with the curvature of the wing’s upper surface in this region, resulted in a vertical tilting of the net force vector for positively cambered wings, which explains how insects can benefit from wing camber.
Comparison between spatial and temporal wall oscillations in turbulent boundary layer flows
Authors: Skote Martin 
Published: July 2013

AbstractDirect numerical simulations have been performed to study the drag reduction resulting from spatial oscillations of a segment of the wall under a turbulent boundary layer. The oscillating motion is imposed by utilizing a streamwise modulated spanwise wall forcing. The results are compared with earlier simulations using temporal oscillations with an identical segment and forcing amplitudes, and with a frequency related to the wavelength through a convective velocity. Two different oscillation amplitudes with equal oscillation wavelength have been used, which allows for a direct comparison between a relatively weak and strong forcing of the flow. The weaker forcing results in 25 % drag reduction while the stronger forcing, with twice the amplitude, yields 41 % drag reduction. Comparison with the temporal cases reveals drastically improved energy savings for the spatial oscillation technique, in accordance with earlier channel flow investigations. The streamwise variation of spanwise shear is shown to follow the analytical solution to the laminar Navier–Stokes equations derived under the assumption of constant friction velocity. Furthermore, the spanwise velocity profiles at various phases are compared with the analytical solution, and show very good agreement. The downstream development of the spatial Stokes layer thickness is theoretically estimated to be ${\sim }{x}^{1/ 15} $, in general agreement with the simulation data. The spatial variation of the spanwise Reynolds stress is investigated and compared with the variation in time for the temporal wall forcing cases. The controversy regarding a zero or non-zero production of spanwise Reynolds stress in the temporal case is elucidated. In addition, comparison with the spatial case reveals that a second production term originating from the downstream variation of the spanwise wall velocity has a negative contribution to the production, and hence relates to the larger drag reduction in the case of spatial forcing.
Instability of an inviscid flow between porous cylinders with radial flow
Authors: Ilin Konstantin , Morgulis Andrey 
Published: July 2013

AbstractThe stability of a two-dimensional inviscid flow in an annulus between two permeable cylinders is examined. The basic flow is irrotational, and both radial and azimuthal components of the velocity are non-zero. The direction of the radial flow can be from the inner cylinder to the outer one (the diverging flow) or from the outer cylinder to the inner one (the converging flow). It is shown that, independent of the direction of the radial flow, the basic flow is unstable to small two-dimensional perturbations provided that the ratio of the azimuthal component of the velocity to the radial one is sufficiently large. The instability is oscillatory and persists if the viscosity of the fluid is taken into consideration.
Drop impact on super-wettability-contrast annular patterns
Authors: Kim Seungho , Moon Myoung-Woon , Kim Ho-Young 
Published: July 2013

AbstractExtreme wetting properties of solids, either superhydrophobic or superhydrophilic, provide versatile methods to achieve unusual liquid deposit morphologies, such as liquid pearls or polygonal films. Here we report the dynamics of liquid drops that impact on solid surfaces where the extreme wetting properties are coupled in such a way that a superhydrophilic annulus is patterned on a superhydrophobic background. The drop that initially spreads on the inner superhydrophobic region is arrested by the hydrophilic annulus. The liquid deposit gets destabilized because of the strong water repellence of the inner region, exhibiting the burst and disengagement of the liquid film. This process leads to the formation of a liquid ring defined by the annulus pattern, which has practical implications in rapid printing of functional liquids. We visualize such drop dynamics with a high-speed camera and characterize their salient features by combining experimental measurements and theoretical considerations.
Engineering social contagions: Optimal network seeding in the presence of homophily
Authors: ARAL SINAN , MUCHNIK LEV , SUNDARARAJAN ARUN 
Published: July 2013

AbstractWe use data on a real, large-scale social network of 27 million individuals interacting daily, together with the day-by-day adoption of a new mobile service product, to inform, build, and analyze data-driven simulations of the effectiveness of seeding (network targeting) strategies under different social conditions. Three main results emerge from our simulations. First, failure to consider homophily creates significant overestimation of the effectiveness of seeding strategies, casting doubt on conclusions drawn by simulation studies that do not model homophily. Second, seeding is constrained by the small fraction of potential influencers that exist in the network. We find that seeding more than 0.2% of the population is wasteful because the gain from their adoption is lower than the gain from their natural adoption (without seeding). Third, seeding is more effective in the presence of greater social influence. Stronger peer influence creates a greater than additive effect when combined with seeding. Our findings call into question some conventional wisdom about these strategies and suggest that their overall effectiveness may be overestimated.
1958 RECONSIDERED: STATE FORMATION AND THE COLD WAR IN THE EARLY POSTCOLONIAL ARAB MIDDLE EAST
Authors: Schayegh Cyrus 
Published: July 2013

AbstractUsing Arabic, English, and French sources, and engaging Middle East and Cold War historians, this article makes a threefold argument. First, in United Arab Republic (UAR)–Syria, Jordan, and Lebanon, the 1958–59 explosion of domestic and regional tensions triggered state-formation surges. Second, these formed one process, which made those states more alike, with state-led socioeconomic planning playing a key role. Third, that process partook of a global Third World trend intersecting with the early Cold War. I draw three conclusions. Although existing scholarly readings that the events of 1958–59 in the Arab Middle East formed a crisis but not an ideological or political watershed are correct, from the viewpoint of state formation this crisis was a milestone. Moreover, UAR–Syria, Jordan, and Lebanon had persisting affinities and shared regional positions—notably, the fact that all were sandwiched between the unstable poles of the Arab state system, Iraq and Egypt—that shaped their individual postindependence histories of state formation. Last, Washington's low-profile involvement in this state-formation surge illustrates how domestic sociopolitics and regional geopolitics—including the UAR's peaking popularity and influence in 1958–59—affected U.S. policy in the Cold War postcolonial world.
BLACK FLAG AT A CROSSROADS: THE KAFR QASIM POLITICAL TRIAL (1957–58)
Authors: Orbach Danny 
Published: July 2013

AbstractA political trial, according to Steven E. Barkan, is a trial revolving around highly publicized legal controversies. In some cases, such a trial may determine fundamental political questions, exceeding the legal realm, which are in debate inside a given polity. The 1957–58 trial related to the 1956 massacre in Kafr Qasim, Israel certainly belongs to this category. The trial established the doctrine of a “manifestly unlawful order” in Israeli military law, contributed considerably to the reshaping of civil–military relations, and influenced the civic status of the Arab minority in Israel. In this article, using hitherto underexamined primary sources, I argue that the most important contribution of the trial, the doctrine of a “manifestly unlawful order,” was not only a creation of the bench but also a result of a complicated interaction between the actors present in the courtroom: the defendants, their defense lawyers, the prosecutors, and the judges. Above all, the article shows how the bitter struggle between the two main attorneys helped shape the doctrine of a “manifestly unlawful order,” that is, an order that is illegal for a soldier to obey.
Vocal fold paralysis in the presence of thyroid disease: management strategies
Authors: O'Duffy F , Timon C 
Published: July 2013

AbstractBackground:The presentation of vocal fold palsy with associated goitre has historically been considered to be due to malignancy with recurrent laryngeal nerve involvement.Method:In total, 830 consecutive patients who underwent thyroid surgery were reviewed. Patients with vocal fold paralysis and thyroid disease were examined to determine the aetiology of the paralysis.Results:Nine patients were identified with new onset vocal fold paralysis prior to thyroid surgery. Six of the patients with recurrent laryngeal nerve paralysis had benign thyroid disease, and for three of the patients the paralysis was secondary to malignancy.Conclusion:Recurrent laryngeal nerve paralysis in the presence of thyroid disease is not pathognomonic for malignancy. The current literature may underestimate the association between vocal fold paralysis and benign thyroid disease. The paper also highlights the importance of recurrent laryngeal nerve preservation in patients who present with palsy and thyroid disease; the relief of benign compression often leads to complete recovery of recurrent laryngeal nerve paralysis.
‘Les anglicismes polluent la langue française’. Purist attitudes in France and Quebec
Authors: WALSH OLIVIA 
Published: July 2013

ABSTRACTIt is often claimed that France is a particularly purist country; the Académie française is seen to be representative of a purist outlook and popular works such as Étiemble's attack on English influence Parlez vous franglais? (Étiemble, 1964) have served to bolster this view. However, this claim has not been empirically verified. In order to determine whether or not the rhetoric around purism in France matches the reality, we developed a questionnaire to investigate whether or not ordinary speakers of French in France are purist, taking the theoretical framework in George Thomas's Linguistic Purism as a base (Thomas, 1991). This questionnaire was distributed online to a random sample of participants in France. To contextualise the findings, the questionnaire was also distributed to French speakers in Quebec. The results of the study show that, contrary to expectations, the French respondents display only mild purism and the Québécois respondents are more purist in the face of English borrowings (external purism). However, the French respondents are more concerned with the structure or ‘quality’ of the French language itself (internal purism) than their Québécois counterparts. This study also highlights some problems with Thomas's framework, which requires some modification for future research.
Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy
Authors: Shao Xiaohong , Yang Huajie , De Hosson Jeff T.M. , Ma Xiuliang 
Published: July 2013

AbstractTransmission electron microscopy characterization of two major long-period stacking ordered (LPSO) phases in Mg–Zn–Y alloy, i.e., 18R- and 14H-LPSO are reported. The space group and atomic-scale microstructures of both compounds were determined using a combination of electron diffraction, convergent beam electron diffraction, high-resolution transmission electron microscopy, and Z-contrast scanning transmission electron microscopy. The 18R-LPSO phase is demonstrated to have a point group and space group 3m and R3m (or 3m and R3m), with the lattice parameter a = 1.112 nm and c = 4.689 nm in a hexagonal coordinate system. The 14H-LPSO phase has a point group 6/mmm and a space group P63 /mmc, and the lattice parameter is a = 1.112 nm and c = 3.647 nm. In addition, insertion of extra thin Mg platelets of several atomic layers, results in stacking faults in the LPSO phase. These results may shed some new light on a better understanding of the microstructure and deformation mechanisms of LPSO phases in Mg alloys.
Legalise it! The rising place of law in French sociology
Authors: Israël Liora 
Published: July 2013

AbstractBy highlighting a large number of recent studies mainly based on empirical methods, the aim of this paper is to emphasise and illustrate the rising influence of legal sociology in France today, and the interesting results produced. More generally, it is noteworthy to emphasise the growing importance of law and legal domains as a topic of great interest in French social sciences in general. It remains an open question whether this trend is linked to the ‘judicialisation’ of French politics and society and its influence over the academic field, or, alternatively, to the growing capacity of social scientists to resist the monopolistic claim of French academic lawyers on the analysis of legal subjects and to develop their own. Nevertheless, those trends converge towards a better knowledge of French legality, relevant from a national perspective, as well as to assess its contribution to socio-legal knowledge in general.
Re-envisioning the local: spatiality, land and law in Botswana
Authors: Griffiths Anne 
Published: July 2013

AbstractBased on an ethnographic study located in Botswana, I move beyond conceptions of the local as physically or territorially grounded to one that examines how it is constituted through links between persons and land derived from life histories extended over several generations. This not only takes account of a specific site in which social relations are bounded and locally constituted but also of how perceptions of locality are discursively and historically constructed. Viewing land as both a tangible and intangible universe constructed through social relationships, I highlight ways in which individuals, as part of a ‘local’ community, find their life courses shaped by wider transnational and global processes, including law, that have an impact on their everyday lives. For some, this provides opportunities for upward mobility and future gains, while others find scope for action severely curtailed. In documenting these uneven, diverse effects of globalisation, what emerges are processes of ‘internalisation’ and ‘relocalisation’ of global conditions, allowing for the emergence of new identities, alliances and struggles for space and power within specific populations. Thus what exists in the here and now as a form of temporality is constantly remade, drawing on the past while fashioning new prospects for the future.
The city of law
Authors: Campbell Kirsten 
Published: July 2013

AbstractThere is now a well-established ‘spatial turn in law’. However, it remains oriented towards notions of space rather than law. How, then, to capture both the spatiality of law and the legality of space? This article draws on Bruno Latour's concept of the legal construction of the ‘social’ to explore the assemblage of the city of law. It shows how law functions as a particular form of association in urban life by tracing two key forms of urban legal association in London, the city of law. The first form is ‘legal ordering’. This seeks to order urban life through domination, and includes citadel law, police law and laws of exception. The second is ‘legal consociations’, which build new forms of urban life, such as urban rights, the rights of the city and the right to the city. Finally, the article explores the creation of a spatial justice that can build more just legal associations.
Managing Religion and Renegotiating the Secular: The Muslim Brotherhood and Defining the Religious Sphere
Authors: Scott Rachel M. 
Published: July 2013

AbstractThis article questions the assumption that — prior to July 2013 when the Egyptian military removed former President Mursi from power — the Muslim Brotherhood was in the process of implementing an Islamic state that would have involved a reversal of secularization and an upheaval to the status quo in terms of fundamental shifts in institutions and legal categories. Rather, the article argues that the Muslim Brotherhood evolved to embrace secularism of a certain sort-a statism in which it is the state that determines the boundaries of religion and politics. It illustrates this by looking at the role the Muslim Brotherhood envisaged for the Supreme Constitutional Court — and how this relates to the religious scholars of al-Azhar — in the formulation of legislation and in the assessment of whether legislation conforms to Article 2 of the constitution, both the 1971 one and the 2012 one, which was suspended in July 2013. In addition, the article will show how the Muslim Brotherhood has defined the public order with a particular focus on the idea of the Islamic “framework,” the rights of non-Muslim minorities, and personal status law.
Same Battle, Different War: Religious Movements in American State Politics
Authors: Conger Kimberly H. 
Published: July 2013

AbstractThe Christian Right is a long-standing social movement with a reputation for mobilization and activism at all levels of American politics. The Christian Progressive movement is a manifestation of religiously motivated political activity largely opposed to the policy goals of the Christian Right. Some have questioned, however, whether Christian Progressives have the internal cohesion to mobilize voters, activists, and movement organizations toward their policy goals. In this article, I update an existing measure of Christian Right influence and introduce a parallel measure for Christian Progressives. Analyses of these indices show that the Christian Progressive movement is visible and active in many states, though not the engine of influence that the Christian Right remains.
Male soldiers are functional in the Japanese strain of a polyembryonic wasp
Authors: Uka Daisuke , Takahashi-Nakaguchi Azusa , Yoshimura Jin , Iwabuchi Kikuo 
Published: July 2013

AbstractPolyembryonic parasitoids clonally produce sterile soldier larvae in both sexes. Female soldier larvae ofCopidosoma floridanumdefend their siblings and host resources against heterospecific competitors as well as conspecific male embryos that results in female biased sex ratios. However, the male soldiers of the USA strain exhibit no aggressive behaviors against them, suspected to be a secondary loss of male defense function in the course of evolution. From vitro and vivo experiments, we have found functional male soldiers in the Japanese strain ofC. floridanum. In vitro experiments, male soldiers exhibit aggressions against four larval competitors, though aggressiveness is much weaker than that of female soldiers. In vivo experiments, heterospecific competitors are equivocally excluded in both male and female broods. Our findings support the idea that male soldiers have evolved primarily to defend against heterospecific competitors. Further experiments against conspecific embryos may be able to confirm this hypothesis.
Mining the bacterial unknown proteome: identification and characterization of a novel family of highly conserved protective antigens in Staphylococcus aureus
Authors: Schluepen Christina , Malito Enrico , Marongiu Ambra , Schirle Markus , McWhinnie Elisabeth , Lo Surdo Paola , Biancucci Marco , Falugi Fabiana , Nardi-Dei Vincenzo , Marchi Sara , Fontana Maria Rita , Lombardi Benedetta , De Falco Maria Grazia , Rinaudo C. Daniela , Spraggon Glen , Nissum Mikkel , Bagnoli Fabio , Grandi Guido , Bottomley Matthew J. , Liberatori Sabrina 
Published: July 2013

In the human pathogen Staphylococcus aureus, there exists an enormous diversity of proteins containing DUFs (domains of unknown function). In the present study, we characterized the family of conserved staphylococcal antigens (Csa) classified as DUF576 and taxonomically restricted to Staphylococci. The 18 Csa paralogues in S. aureus Newman are highly similar at the sequence level, yet were found to be expressed in multiple cellular locations. Extracellular Csa1A was shown to be post-translationally processed and released. Molecular interaction studies revealed that Csa1A interacts with other Csa paralogues, suggesting that these proteins are involved in the same cellular process. The structures of Csa1A and Csa1B were determined by X-ray crystallography, unveiling a peculiar structure with limited structural similarity to other known proteins. Our results provide the first detailed biological characterization of this family and confirm the uniqueness of this family also at the structural level. We also provide evidence that Csa family members elicit protective immunity in in vivo animal models of staphylococcal infections, indicating a possible important role for these proteins in S. aureus biology and pathogenesis. These findings identify the Csa family as new potential vaccine candidates, and underline the importance of mining the bacterial unknown proteome to identify new targets for preventive vaccines.
Broadband circularly polarised square slot antenna fed by coplanar waveguide
Authors: Liu Y.W. , Hsu P. 
Published: July 2013

A broadband circularly polarised square slot antenna fed by a coplanar waveguide (CPW) from a corner of the slot is proposed. A check‐shaped strip with its vertex connected to the protruded signal strip of the CPW is used to achieve circular polarisation. The measured 3 and 1 dB axial ratio bandwidths are 48 and 21.3%, respectively, and the input impedance bandwidth (|S11| ≤ − 10 dB) is 73.9%, which covers the entire circular polarisation band.
Efficient layer stopping technique for layered LDPC decoding
Authors: Lin C.‐H. , Huang T.‐H. , Chen C.‐C. , Lin S.‐Y. 
Published: July 2013

Early termination techniques are widely used in low‐density party‐check (LDPC) decoding since the decoding operations can be tremendously reduced. A layer stopping criterion is proposed to reduce further the operations within iterative layered LDPC decoding. The proposed criterion detects the high reliability of the soft log‐likelihood ratio with a threshold in each layer. Then the layer operations can be stopped when the reliable layers are detected. The proposed criterion combined with early termination techniques can efficiently reduce the layer operations by up to 60% with a negligible loss of coding gain at Eb/N0 of 3.2 dB.