bluuebunny/crossref_metadata_2025_split huggingface dataset:
Distribution of approximants and geodesic flows
Authors: FISHER ALBERT M. , SCHMIDT THOMAS A. 
Published: June 2013

AbstractWe give a new proof of Moeckel’s result that for any finite index subgroup of the modular group, almost every real number has its regular continued fraction approximants equidistributed into the cusps of the subgroup according to the weighted cusp widths. Our proof uses a skew product over a cross-section for the geodesic flow on the modular surface. Our techniques show that the same result holds true for approximants found by Nakada’s $\alpha $-continued fractions, and also that the analogous result holds for approximants that are algebraic numbers given by any of Rosen’s $\lambda $-continued fractions, related to the infinite family of Hecke triangle Fuchsian groups.
Cyclicity in families of circle maps
Authors: KOZLOVSKI O. 
Published: June 2013

AbstractIn this paper we will study families of circle maps of the form $x\mapsto x+ 2\pi r+ af(x)({\rm mod} \hspace{0.334em} 2\pi )$ and investigate how many periodic trajectories maps from this family can have for a ‘typical’ function $f$ provided the parameter $a$ is small.
Oil and Health Care in Post-Soviet Azerbaijan
Authors: Rzayeva Sara 
Published: June 2013

AbstractHealth care systems reflect historical relationships between states and citizens, as well as predominant values and institutions marking a particular social milieu. Theories that place national health care in historical social context tend to exaggerate the forces of globalization and to underestimate the role of local specificities. A health care system and its social context, however, are shaped at the intersection of global, regional, and local factors, rather than by globalization alone. In this article I demonstrate this combined influence by tracking the transition in Soviet to post-Soviet health care Azerbaijan. I show that the dissolution of Azerbaijan’s socialized health care was due not to neoliberal globalization, but rather to the historical constellation of global, regional, and national processes, including the political choice of a petroleum-based development strategy.
Double Standards? Veils and Crucifixes in the European Legal Order
Authors: Joppke Christian 
Published: June 2013

AbstractComparing the treatment of Islamic veils and Christian crucifixes by the European Court of Human Rights, this paper re-examines the charge of “double standards” on the part of this guardian of the European legal order, which is seen as disadvantaging Islam and favoring Christianity. While this is proved partially correct, the paper calls for a more differentiated treatment of the issue. For one, there is a modicum of consistency in the European Court’s decisions, because they are all meant to further “pluralism”. Only, Islam and Christianity fare differently in this respect, as “threat” to and “affirmation” of pluralism, respectively. This distinction hinges on Islam’s compatibility with the liberal-secular order, on which the jury is out. A possible way out of the “pluralism v. pluralism” dilemma, I argue, is signaled in the European Court’s recent decision inLautsi v. Italy(2011),which pairs a preference for “culturalized” Christianity with robust minority pluralism.
Nonlinear interaction of slow Alfvén wave with ion acoustic wave and applications to space plasma
Authors: DAS B. K. , SHARMA R. P. , YADAV N. 
Published: June 2013

AbstractThe paper is concerned with the analytical study of nonlinear coupling of slow Alfvén wave (SW) with ion acoustic waves (IAWs) in high-β and low-β plasmas. Here the pump wave (SW) number density gets perturbed in the presence of IAW. The model equations of IAW and SW turn out to be the modified Zakharov system of equations when the ponderomotive nonlinearities are incorporated in the IAW and SW dynamics. Growth rate of modulational instability has been calculated. The relevance of these investigations for solar wind plasma and solar coronal plasma has also been discussed.
Electrostatic rogue waves in a plasma with a relativistic electron beam
Authors: BENCHRIET F. , EL-TANTAWY S. A. , MOSLEM W. M. , DJEBLI M. 
Published: June 2013

AbstractThe properties of nonlinear electrostatic acoustic rogue waves in a three-component plasma composed of electron, positron, and relativistic electron beam are investigated. The reductive perturbation method is used to obtain a Korteweg–de Vries equation. The dynamics of the modulationally unstable wave packets described by the Korteweg–de Vries equation gives rise to the formation of rogue pulses that is described by a nonlinear Schrödinger equation for small wave number. The effects of physical parameters on the profile of rogue waves are investigated numerically. The electrostatic rogue waves, as predicted here, may be associated with the nonlinear structures caused by the interaction of relativistic jets with plasma medium, such as in the active galactic nuclei and in the magnetosphere of collapsing stars.
Kinetic description of a wiggler-pumped ion-channel free-electron laser by applying the Einstein coefficient technique
Authors: HASANBEIGI A. , ABASIROSTAMI S. , MEHDIAN H. 
Published: June 2013

AbstractA kinetic theory is used to investigate the theory of a free-electron laser with a helical wiggler and an ion channel based on the Einstein coefficient method. The laser gain in the low-gain regime is obtained for the case of a cold tenuous relativistic electron beam, where the beam plasma frequency is much less than the radiation frequency, propagating in this configuration. The resulting gain equation is analyzed numerically over a wide range of system parameters.
Seasonal migration of the snailfishLiparis tanakaeand their habitat overlap with 0-year-old Japanese flounderParalichthys olivaceus
Authors: Tomiyama Takeshi , Yamada Manabu , Yoshida Tetsuya 
Published: June 2013

The snailfishLiparis tanakaeis an annual fish, growing up to >300 mm in total length. This species is known as a predator of 0-year-old Japanese flounderParalichthys olivaceus. To reveal when and where the predation occurs, monthly collections of both species at various depths were conducted off Fukushima, Japan. The snailfish inhabited shallow areas ≤50 m deep until June. Thereafter, they shifted their main habitat to offshore areas ≥100 m deep from July to September. The snailfish migrated to inshore areas with depths of ≤50 m again around October–December, during which time the habitat overlap between snailfish and 0-year-old Japanese flounder was observed. In that period, >40% of 0-year-old Japanese flounder were vulnerable to the snailfish. Larger snailfish showed stronger piscivory, and some flatfish were found in their stomachs. These results suggest that by not releasing hatchery-reared Japanese flounder until September can forestall predation by the snailfish.
Children choose their own stories: the impact of choice on children's learning of new narrative skills
Authors: KHAN KIREN , NELSON KEITH , WHYTE ELISABETH 
Published: June 2013

ABSTRACTDespite evidence that early narrative abilities are predictive of literacy skills and academic achievement, only limited progress has been made in understanding how the development of these narrative skills can be facilitated. The current study measured the effectiveness of a new narrative intervention conducted with 26 preschoolers. Children were assigned to one of two intervention conditions: an active-choice condition (able to choose story components) or a no-choice condition (story components were preselected). Both groups otherwise received the same explicit and engaging teaching of story grammar. As predicted, greater narrative skill gains were evident for the active-choice intervention; including larger gains on both central story grammar components and story information overall. Future implications for how stories might be presented to young children in order to more richly facilitate narrative skill acquisition are discussed.
Truth versus information in logic programming
Authors: NAISH LEE , SØNDERGAARD HARALD 
Published: June 2013

AbstractThe semantics of logic programs was originally described in terms of two-valued logic. Soon, however, it was realised that three-valued logic had some natural advantages, as it provides distinct values not only for truth and falsehood but also for “undefined”. The three-valued semantics proposed by Fitting (Fitting, M. 1985. A Kripke–Kleene semantics for logic programs.Journal of Logic Programming 2, 4, 295–312) and Kunen (Kunen, K. 1987. Negation in logic programming.Journal of Logic Programming 4, 4, 289–308) are closely related to what is computed by a logic program, the third truth value being associated with non-termination. A different three-valued semantics, proposed by Naish, shared much with those of Fitting and Kunen but incorporated allowances for programmer intent, the third truth value being associated with underspecification. Naish used an (apparently) novel “arrow” operator to relate the intended meaning of left and right sides of predicate definitions. In this paper we suggest that the additional truth values of Fitting/Kunen and Naish are best viewed as duals. We use Belnap's four-valued logic (Belnap, N. D. 1977. A useful four-valued logic. InModern Uses of Multiple-Valued Logic, J. M. Dunn and G. Epstein, Eds. D. Reidel, Dordrecht, Netherlands, 8–37), also used elsewhere by Fitting, to unify the two three-valued approaches. The truth values are arranged in a bilattice, which supports the classical ordering on truth values as well as the “information ordering”. We note that the “arrow” operator of Naish (and our four-valued extension) is essentially the information ordering, whereas the classical arrow denotes the truth ordering. This allows us to shed new light on many aspects of logic programming, including program analysis, type and mode systems, declarative debugging and the relationships between specifications and programs, and successive execution states of a program.
A proof of concept of a non-resonant near-field microwave microscope based on a high impedance reflectometer
Authors: Glay David , El Fellahi Adelhatif , Lasri Tuami 
Published: June 2013

In this paper, we present a non-resonant high impedance reflectometer with a reference impedance close to one of the tip probe of a near-field microwave microscope. We show that for an apex of the tip probe of 100 µm there is an optimum reference impedance close to 1 kΩ. To validate this approach a microwave circuit that makes use of lumped elements has been fabricated. A proof of concept is also explored for capacitance measurements between the tip probe and a metal plate.
Cryptolaemus montrouzieri
(Mulsant) (Coccinellidae: Scymninae): a review of biology, ecology, and use in biological control with particular reference to potential impact on non-target organisms.
Authors: Kairo M. T. K. , Paraiso O. , Gautam R. D. , Peterkin D. D. 
Published: June 2013

Abstract

Over the years,
Cryptolaemus montrouzieri
Mulsant (Coleoptera: Coccinellidae) has been used in both classical and augmentative biological control programmes. The ladybird is also considered important in certain conservation biological control programmes. This paper provides a critical review of the literature pertaining to its biology, ecology and use, with a particular emphasis on potential impact on non-target organisms.
C. montrouzieri
has many of the attributes of an effective natural enemy, including a rapid development rate, high reproductive potential, good adaptation to a range of tropical and subtropical climates, high prey consumption rates by both adults and larvae and ease of rearing. The coccinellid has been introduced into at least 64 countries/territories to control more than 16 pest species.
C. montrouzieri
is a polyphagous predator that exploits hosts in at least eight hemipteran families. It is noteworthy that it has adapted to feed on new insect families in some new localities where it has been introduced. Although the wide host range has allowed its use against a variety of pest species, it is also a good indicator of the potential to feed on non-target species. In view of the continued interest to utilize the predator in new non-native localities, questions have arisen regarding its potential to cause negative impacts, especially against non-target organisms. Given the wide recorded host range, it seems unnecessary to conduct additional host range tests as significant decisions can be made based on the available information. Thus, when the available data are interpreted based on a centrifugal process, it is apparent that the ladybird has a potentially very broad host range. Therefore, even without additional studies, it would be reasonable to assume that the ladybird has the potential to extend its host range in unpredictable ways. Clearly, the beetle would provide a good model for conducting post-release studies, especially where the predator has been established for a long time. Such studies would not only provide insight into the impact of introducing generalist non-native coccinellid predators but also help to increase our understanding of the mechanisms limiting host range.
Who Benefits from a Job Change
Authors: Pavlopoulos Dimitris , Fouarge Didier , Muffels Ruud , Vermunt Jeroen K 
Published: June 2013

ABSTRACT
In this paper, we use panel data from the UK and Germany to investigate the effect of employer changes and in-firm job changes on year-to-year wage mobility of male full-time workers. Following segmentation theories and the job search theory, we study whether this effect differs for the low- and high-wage workers. As wage growth is endogenous to the decision of changing jobs, a two-stage Heckman selection approach is used. Specifically, we first estimate a random-effects multinomial logit model for the selection into a job transition and then a fixed-effects panel regression model for the wage growth. The findings suggest that both external and in-firm job changes result into substantial wage gains for the low-paid workers but not for the medium- or high-paid workers. However, the wage gain of low-paid workers due to an in-firm job change is only observed in the UK and is less pronounced than their gain by an external job change. In the German labour market, the later effect is insignificant. The results indicate that low-paid workers profit more from a voluntary change of employer in the coordinated German labour market and from a voluntary in-firm change in the liberal British labour market.
An embedding theorem
Authors: Chernyavskaya N. , Shuster L. 
Published: June 2013

We consider a weighted space

W
1

(
2
)

(

R

,
q
)

W_1^{(2)}(\mathbb R,q)

of Sobolev type:
\[

W
1

(
2
)

(

R

,
q
)
=

{
y
∈
A

C

loc

(
1
)

(

R

)
:
‖
y

‖

L
1

(

R

)

+
‖
q
y

‖

L
1

(

R

)

>
∞
}

,

W_1^{(2)}(\mathbb R,q)=\left \{y\in AC_{\operatorname {loc}}^{(1)}(\mathbb R): \|y\|_{L_1(\mathbb R)}+\|qy\|_{L_1(\mathbb R)}>\infty \right \},

\]
where

0
≤
q
∈

L
1

loc

(

R

)

0\le q\in L_1^{\operatorname {loc}}(\mathbb R)

and
\[

‖
y

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1

(
2
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(

R

,
q
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=
‖
y

‖

L
1

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)

+
‖
q
y

‖

L
1

(

R

)

.

\|y\|_{W_1^{(2)}(\mathbb R,q)}=\|y\|_{L_1(\mathbb R)}+\|qy\|_{L_1(\mathbb R)}.

\]

We obtain a precise condition which guarantees the embedding
\[

W
1

(
2
)

(

R

,
q
)
↪

L
p

(

R

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,

p
∈
[
1
,
∞
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.

W_1^{(2)}(\mathbb R,q)\hookrightarrow L_p(\mathbb R),\ p\in [1,\infty ).

\]
In Defence of Service Provision Changes?
Authors: Wynn-Evans Charles 
Published: June 2013

Abstract
The introduction in 2006 of the service provision change, as an alternative form of relevant transfer for the purposes of the Transfer of Undertakings (Protection of Employment) Regulations 2006, was intended to enhance legal certainty and employee protection in relation to changes of providers of labour-intensive activities. The Government has now embarked upon consultation over potential reform of various aspects of the domestic transfer of undertakings legislation, including a proposal to repeal its provisions relating to service provision changes. This article assesses the proposed abolition of service provision changes by reference to the policy considerations that led to their introduction, the jurisprudence in the intervening period and the arguments now deployed in support of the proposed reform of the legislation. The case for retention of the service provision change regime argues not only that the case law since 2006 has narrowed the differences between service provision changes and ‘traditional’ transfers of undertakings, thereby addressing to a significant extent the concerns raised by critics of the service provision change concept about its expansion of the transfer legislation; it also contends that the abolition of service provision changes would be a retrograde step, not solely in terms of employee protection. The application of the transfer legislation in the context of labour-intensive activities would then revert to the uncertain and unsatisfactory legal position created by the ECJ decision in Ayse Süzen and its interpretation in the associated domestic case law. The case for repeal argues that the service provision change regime constitutes unnecessary ‘gold-plating’ of the domestic transfer legislation and leads to impaired market efficiency. This debate not only reflects the difficulties arising from the technicalities of the transfer legislation; it also derives to a significant extent from the inevitable conflict between employment protection and its effect on competition in relation to the provision of services.
Clinical and bacteriological evaluation of adapalene 0.1% gel plus nadifloxacin 1% cream versus adapalene 0.1% gel in patients with acne vulgaris
Authors: Takigawa Masahiro , Tokura Yoshiki , Shimada Shinji , Furukawa Fukumi , Noguchi Norihisa , Ito Taisuke ,   The Acne Study Group
Published: June 2013

AbstractThis multicenter, randomized parallel group study investigated the efficacy and tolerability of adapalene 0.1% gel plus nadifloxacin 1% cream (combination therapy) compared with adapalene gel (monotherapy) during 12‐week treatment of acne vulgaris. A total of 184 Japanese patients aged above 12 years with moderate to severe acne as indicated by the Japanese severity grading criteria were randomized to combination therapy (n = 84) and monotherapy (n = 100) groups, both having comparable demographic and baseline characteristics. Adapalene was applied only to inflammatory acne lesions in order to minimize skin irritation and ensure the treatment results. Efficacy and safety evaluations, treatment compliance and satisfaction with drug application were periodically monitored. The combination therapy provided a significantly greater efficacy than adapalene in decrement of inflammatory papulopustular lesions at 4 weeks and thereafter (P = 0.0056). The overall judgment of the therapeutic efficacy by the physician at the end of study revealed a significant difference (P = 0.02496) between the groups in favor of combination therapy. Dryness was reported in a greater proportion of patients undergoing monotherapy than combination therapy at weeks 2 and 4 (P = 0.04652). The patient self‐assessment in satisfaction with the drug application at the end of study revealed a significant difference (P = 0.00268) between the groups in favor of combination therapy. Among 76 strains of Propionibacterium acnes isolated from 87 patients, no strain was resistant to nadifloxacin. Thus, the simultaneous use of adapalene and nadifloxacin may provide an additive and complementary effect, resulting in clinical superiority and greater patient adherence compared to adapalene monotherapy.
Variation in herbivore‐induced plant volatiles corresponds with spatial heterogeneity in the level of parasitoid competition and parasitoid exposure to hyperparasitism
Authors: Poelman Erik H. , Harvey Jeffrey A. , van Loon Joop J. A. , Vet Louise E. M. , Dicke Marcel 
Published: June 2013

Summary

Reproductive success for species in which offspring are confined to a distinct resource depends on the ability of parents to locate reproductive sites as well as the quality of these sites in terms of the food source, risk of predation and competition. To locate hosts for their offspring, parasitic wasps, or parasitoids, use plant odour blends induced by herbivore feeding. These herbivore‐induced plant volatiles (HIPVs) may also be used by competitors and predators. Therefore, offspring of parasitoids that respond to the most conspicuous odours may find themselves more frequently involved in competition or predation risk.

We studied cultivars of Brassica oleracea that are known to differ in volatile production that underlies attractiveness to parasitoids and asked whether variation in this parameter is associated with a heterogeneous distribution of intrinsic competition among parasitoid larvae and predation risk by hyperparasitoids that parasitize parasitoid larvae or pupae. We inoculated field‐grown plants with Pieris caterpillars and, thereafter, exposed them to the natural parasitoid community. We measured the frequency of multiple incidences of parasitism in these herbivores. Cocoons of the parasitoids were collected to identify the degree of hyperparasitism associated with different Brassica cultivars.

Pieris caterpillars on cultivars that were more attractive to Cotesia parasitoids were more commonly parasitized by several females of the same (superparasitism) or different wasp species (multiparasitism) than caterpillars on less attractive plants. Cocoons of parasitoids on attractive plants also more frequently produced hyperparasitoids.

Our results show that there is heterogeneity in intrinsic competition and risk of hyperparasitism for parasitoids on different cabbage cultivars and that this heterogeneity is likely generated by variation in attraction of parasitoids to HIPVs of these cultivars. We conclude that parasitoids may find themselves between a rock and a hard place as cues for host presence may also predict high levels of competition and risk of predation. We speculate that this affects selection on parasitoid responses to plant odours and enhances selection on traits that make wasps better intrinsic or extrinsic competitors as well as selection for adaptive traits – such as crypsis – that protect them against hyperparasitoids.