bluuebunny/crossref_metadata_2025_split huggingface dataset:
Boundary Orders and Geometry of the Signed Thom–Smale Complex for Sturm Global Attractors
Authors: Fiedler Bernold , Rocha Carlos 
Published: April 2020

AbstractWe embark on a detailed analysis of the close relations between combinatorial and geometric aspects of the scalar parabolic PDE $$\begin{aligned} u_t = u_{xx} + f(x,u,u_x) \end{aligned}$$

u
t

=

u

xx

+
f

(
x
,
u
,

u
x

)

on the unit interval $$0< x<1$$

0
<
x
<
1

with Neumann boundary conditions. We assume f to be dissipative with N hyperbolic equilibria $$v\in {\mathcal {E}}$$

v
∈
E

. The global attractor $${\mathcal {A}}$$
A
of (*), also called Sturm global attractor, consists of the unstable manifolds of all equilibria v. As cells, these form the Thom–Smale complex$${\mathcal {C}}$$
C
. Based on the fast unstable manifolds of v, we introduce a refinement $${\mathcal {C}}^s$$

C

s

of the regular cell complex $${\mathcal {C}}$$
C
, which we call the signed Thom–Smale complex. Given the signed cell complex $${\mathcal {C}}^s$$

C

s

and its underlying partial order, only, we derive the two total boundary orders $$h_\iota :\{1,\ldots , N\}\rightarrow {\mathcal {E}}$$

h
ι

:

{
1
,
…
,
N
}

→
E

of the equilibrium values v(x) at the two Neumann boundaries $$\iota =x=0,1$$

ι
=
x
=
0
,
1

. In previous work we have already established how the resulting Sturm permutation $$\begin{aligned} \sigma :=h_{0}^{-1} \circ h_1, \end{aligned}$$

σ
:
=

h

0

-
1

∘

h
1

,

conversely, determines the global attractor $${\mathcal {A}}$$
A
uniquely, up to topological conjugacy.
Asymptotic Distributions of Empirical Interaction Information
Authors: Kubkowski Mariusz , Mielniczuk Jan 
Published: April 2020

AbstractInteraction Information is one of the most promising interaction strength measures with many desirable properties. However, its use for interaction detection was hindered by the fact that apart from the simple case of overall independence, asymptotic distribution of its estimate has not been known. In the paper we provide asymptotic distributions of its empirical versions which are needed for formal testing of interactions. We prove that for three-dimensional nominal vector normalized empirical interaction information converges to the normal law unless the distribution coincides with its Kirkwood approximation. In the opposite case the convergence is to the distribution of weighted centred chi square random variables. This case is of special importance as it roughly corresponds to interaction information being zero and the asymptotic distribution can be used for construction of formal tests for interaction detection. The result generalizes result in Han (Inf Control 46(1):26–45 1980) for the case when all coordinate random variables are independent. The derivation relies on studying structure of covariance matrix of asymptotic distribution and its eigenvalues. For the case of 3 × 3 × 2 contingency table corresponding to study of two interacting Single Nucleotide Polymorphisms (SNPs) for prediction of binary outcome, we provide complete description of the asymptotic law and construct approximate critical regions for testing of interactions when two SNPs are possibly dependent. We show in numerical experiments that the test based on the derived asymptotic distribution is easy to implement and yields actual significance levels consistently closer to the nominal ones than the test based on chi square reference distribution.
Metabolomics Study of Flavonoids and Anthocyanin-Related Gene Analysis in Kiwifruit (Actinidia chinensis) and Kiwiberry (Actinidia arguta)
Authors: Yu Min , Man Yuping , Lei Rui , Lu Xuemei , Wang Yanchang 
Published: April 2020

AbstractThis study investigated the flavonoid compounds in Actinidia chinensis and Actinidia arguta fruits. A total of 125 flavonoids, including 9 anthocyanins, 12 catechins, 17 flavanones, 48 flavones (including 14 flavone C-glycosides), 29 flavonols, 6 isoflavones, and 4 proanthocyanidins, were identified in “Hongyang” kiwifruit (red flesh), “Jintao” kiwifruit, “Mini Amethyst” kiwiberry (purple flesh), and “Kuilv” kiwiberry. Thirty-nine metabolites showed significantly different contents between “Hongyang” and “Jintao,” and 38 of them showed higher content in “Hongyang,” whereas 39 metabolites showed significantly different contents between “Mini Amethyst” and “Kuilv,” and 31 of them showed higher content in “Mini Amethyst.” This result indicates the superior nutritional value of the pigmented kiwi cultivars in terms of flavonoids. Multivariate statistical analysis indicates that the variation in flavonoid profiles contributes to the pigmentation phenotypes of “Hongyang” and “Mini Amethyst.” Further comparative transcriptomic analysis revealed that structural genes in the anthocyanin synthesis pathway (AcF3H, AcF3′H, AcDFR, AcUFGT) and transcription factors (AcMYB10, AcbHLH5) may be involved in the pigmentation of the red-fleshed A. chinensis, whereas AaF3H, AaF3GT, and AaMYB110 may play important roles in the pigmentation of the purple-fleshed A. arguta. This study provides broader insight into the variation in flavonoid profiles among kiwifruit/berry, evaluates the flavonoid nutrition of the four cultivars, and provides additional evidence for the correlation between the genes and metabolites involved in flavonoid synthesis.
The Impact of Trade Policy Decisions on Social Justice
Authors: Goff Sarah C. 
Published: April 2020

AbstractSome recent trade decisions, such as the U.S.’s imposition of protectionist measures against China, have attracted fervent popular support as well as outrage. Critics of these trade policies argue that they fail to promote society’s own interests. This paper catalogues the different ways that trade decisions can hinder and facilitate a society’s pursuit of social justice. I adopt a simple description of trade liberalization: a society forgoes the use of certain policy options (such as tariffs), in order to pursue greater economic productivity through increased trade flows. Using this simple descriptive account, the paper identifies two pathways for a society’s trade policies to shape its pursuit of social justice. First, greater economic productivity improves a society’s capacities to realize justice, especially distributive justice. I will argue that the value of greater economic capacities depends upon the society’s existing capacities and its inclinations to pursue justice. When a society has greater capacities and fails to extend their benefits to its worse-off citizens, these citizens have more serious grounds for complaint. Second, a society forgoes certain policy options when it liberalizes trade, and some of these options may be instrumentally valuable or even necessary for the society’s pursuit of justice. I will argue that, under non-ideal conditions, it can be desirable for a society to limit its own policy space so it cannot feasibly select policies that are unjust. Certain protectionist policies have taken on the expressive meaning that some groups are inferior in social and moral status.
When Gender Stereotypes Get Male Adolescents into Trouble: A Longitudinal Study on Gender Conformity Pressure as a Predictor of School Misconduct
Authors: Heyder Anke , van Hek Margriet , Van Houtte Mieke 
Published: April 2020

AbstractSchool misconduct is a threat to educational careers and learning. The present study sheds light on why male adolescents in particular are prone to school misconduct. Qualitative research has argued that male adolescents’ construction of masculinity is a factor driving their school misbehavior. We examined the role of felt pressure to conform to gender stereotypes in predicting school misconduct among male and female adolescents. Data were provided by a three-wave panel study encompassing more than 4200 Flemish early adolescents (ages 12–14). Three-level growth curve models showed that male adolescents misbehaved more in school than female adolescents did. Male adolescents also demonstrated a steeper increase in school misconduct than female adolescents. Furthermore, greater felt gender conformity pressure predicted an increase in school misconduct in male adolescents but not in female adolescents. We conclude that school misconduct forms part of an enactment of masculine gender identity with detrimental consequences for male adolescents’ educational achievement.
Wettability alteration analysis of smart water/novel functionalized nanocomposites for enhanced oil recovery
Authors: Habibi Sara , Jafari Arezou , Fakhroueian Zahra 
Published: April 2020

AbstractSmart water flooding, as a popular method to change the wettability of carbonate rocks, is one of the interesting and challenging issues in reservoir engineering. In addition, the recent studies show that nanoparticles have a great potential for application in EOR processes. However, little research has been conducted on the use of smart water with nanoparticles in enhanced oil recovery. In this study, stability, contact angle and IFT measurements and multi-step core flooding tests were designed to investigate the effect of the ionic composition of smart water containing SO42− and Ca2+ ions in the presence of nanofluid on EOR processes. The amine/organosiloxane@Al2O3/SiO2 (AOAS) nanocomposite previously synthesized using co-precipitation-hydrothermal method has been used here. However, for the first time the application of this nanocomposite along with smart water has been studied in this research. Results show that by increasing the concentrations of calcium and sulfate ions in smart water, oil recovery is improved by 9% and 10%, respectively, compared to seawater. In addition, the use of smart water and nanofluids simultaneously is very effective on increasing oil recovery. Finally, the best performance was observed in smart water containing two times of sulfate ions concentration (SW2S) with nanofluids, showing increased efficiency of about 7.5%.
Preparedness is Essential for Western Pacific Islands During the COVID-19 Pandemic
Authors: Mei Yujie , Hu Jijia 
Published: April 2020

ABSTRACTObjectives:To clarify the pandemic status in Western Pacific countries or territories.Methods:The WHO’s daily situation reports of COVID-19 were reviewed from January 20, 2020, to March 24, 2020. Changes in the infections, deaths, and the case fatality rate (CFR) in Western Pacific countries or territories were counted.Results:As of March 24, a total of 17 countries or territories had reported the presence of COVID-19 in the Western Pacific Region, 96,580 people have been infected and a total of 3502 deaths. Fifty-three percent (9/17) of these countries or territories had their first case within 2 wk since the WHO’s first report, most are China’s neighbors with a large and dense population. No other country or territory in this region reported a new infection from January 30 to February 28. However, 8 (47.0%) countries or territories have reported the first cases in 3 wk since February 28, almost all are islands. Many countries maintained a small number of infections for a long time after the first report, but a rapid increase occurred later. Deaths occurred in 8 countries with a total CFR of 3.63%, and the CFR varies widely, from 0.39% (Singapore) to 7.14% (Philippines).Conclusions:The regional spread of COVID-19 urgently requires an aggressive preparedness for the Western Pacific Islands.
A RENAISSANCE OF THE DOCTRINE OF REBUS SIC STANTIBUS?
Authors: Kulaga Julian 
Published: April 2020

AbstractOnce the ‘popular plaything of Realpolitiker’ the doctrine of rebus sic stantibus post the 1969 VCLT is often described as an objective rule by which, on grounds of equity and justice, a fundamental change of circumstances may be invoked as a ground for termination of a treaty. Yet recent practice from some States suggests that it is returning with a new livery. They point to an understanding that is premised on vital State interests––a view popular among scholars such as Erich Kaufmann at the beginning of the last century.
RECALIBRATING THE INTERNATIONAL INVESTMENT REGIME THROUGH NARROWED JURISDICTION
Authors: García Olmedo Javier 
Published: April 2020

AbstractThe legitimacy crisis confronting the international investment regime has called for reforms to eliminate the asymmetric and troubled nature of investment treaties. These instruments grant extensive investor protections without offering reciprocal safeguards for host States wishing to preserve regulatory space. This article argues that any reform designed to redress imbalances in the existing regime should first aim at narrowing the personal jurisdiction of investment tribunals. Problematically, access to most investment treaties depends on broad nationality requirements, which have enabled investors to use corporations or passports of convenience to obtain treaty protection. This practice exacerbates the unbalanced relationship between host States and investors. It increases host States’ exposure to investment treaty claims and allows investors to circumvent newer, more State-oriented investment treaties. Using as an example the novel anti-nationality planning approach embraced in the 2019 Dutch Model BIT, this article suggests effective treaty mechanisms that States can adopt to restrict the range of investors that are entitled to claim.
ARTICLE 16 UNESCO CONVENTION AND THE PROTECTION OF UNDERWATER CULTURAL HERITAGE
Authors: Petrig Anna , Stemmler Maria 
Published: April 2020

AbstractDeep-water technology and commercial interests have put the protection of underwater cultural heritage under considerable pressure in recent decades. Yet the 2001 UNESCO Convention has the potential to fend off the threat—if fully implemented. This article sets out the legislative duties States Parties have under one of the Convention's core provisions: Article 16. It requires States Parties to take a triad of legislative measures: they must enact prohibitions, impose criminal sanctions and establish corresponding jurisdiction over their nationals and vessels. In addition, the comprehensive protection of underwater cultural heritage also necessitates measures covering acts of corporate treasure hunters, even though this is not required by the Convention itself.
Health technology assessment frameworks for eHealth: A systematic review
Authors: Vis Christiaan , Bührmann Leah , Riper Heleen , Ossebaard Hans C. 
Published: April 2020

ObjectivesTraditionally, health technology assessment (HTA) focuses on assessing the impact of pharmaceutical technologies on health and care. Resources are scarce and policy makers aim to achieve effective, accessible health care. eHealth innovations are increasingly more integrated in all healthcare domains. However, how eHealth is assessed prior to its implementation in care practices is unclear. To support evidence-informed policy making, this study aimed to identify frameworks and methods for assessing eHealth's impact on health care.MethodsThe scientific literature in five bibliographical databases was systematically reviewed. Articles were included if the study was conducted in a clinical setting, used an HTA framework and assessed an eHealth service. A systematic qualitative narrative approach was applied for analysis and reporting.ResultsTwenty-one HTA frameworks were identified in twenty-three articles. All frameworks addressed outcomes related to the technical performance and functionalities of eHealth service under assessment. The majority also addressed costs (n = 19), clinical outcomes (n = 14), organizational (n = 15) and system level aspects (n = 13). Most frameworks can be classified as dimensional (n = 13), followed by staged (n = 3), hybrid (n = 3), and business modeling frameworks (n = 2). Six frameworks specified assessment outcomes and methods.ConclusionsHTA frameworks are available for a-priori impact assessment of eHealth services. The frameworks vary in assessment outcomes, methods, and specificity. Demonstrated applicability in practice is limited. Recommendations include standardization of: (i) reporting characteristics of eHealth services, and (ii) specifying assessment outcomes and methods following a stepped-approach tailored to the functional characteristics of eHealth services. Standardization might improve the quality and comparability of eHTA assessments.
Ladybird landscapes: or, what to look for in the What to Look For books
Authors: Burchardt Jeremy 
Published: April 2020

AbstractThe interlocking relationships between agriculture, nature, science and modernity underwent fundamental, far-reaching change in mid-twentieth-century Britain. This article examines Ladybird’s iconic, bestselling but under-researched ‘What to Look For’ seasonal natural history series, focusing particularly on the illustrations by the distinguished wildlife artist Charles Tunnicliffe and their relationship to the text by the biologist Elliot Lovegood Grant Watson. Beneath their apparent simplicity, the ‘What to Look For’ books attempt an ambitious, forwards-looking synthesis between mechanisation and tradition, nature and livelihood that calls into question historiographical critiques (by Newby, Miller and Bunce, for example) of contemporary representations of the rural as nostalgic and evasive. The ‘What to Look For’ books quietly subvert some of the more distorting tropes of English landscape representation. People are shown going about their everyday work (in contrast to the ‘landscape without figures’ tradition) and modern farm machinery such as tractors and seed drills are also acknowledged and even celebrated. Tunnicliffe and Grant Watson sought to harmonise these potentially discordant elements; their vision of the rural was an inclusive one that accommodated working women, children and even to some extent ethnic diversity. Yet in the second half of the twentieth century attempts to imagine a positive relationship between rurality and modernity such as Ladybird’s were increasingly undermined by escalating ecological crises.
Old and new plants from the Americas to Europe: potatoes, corn and the genetics of double hybrid corn (1800–1940)
Authors: Esperante Bruno , Fernández Prieto Lourenzo , Cabo Miguel 
Published: April 2020

AbstractWe discuss the extension of corn and potatoes in Galician Atlantic agriculture during the nineteenth and twentieth centuries as an innovation process that facilitated rapid circulation of a new cattle feed from the Americas to Europe. Specifically, we focus on Galicia from 1890 to 1940, a time of significant scientific interest with regard to genetic improvements. This new science made it possible to develop double hybrid corn plants that became widespread after the 1920s. In this article we will describe the conditions accompanying the introduction and spread of these American crops, as recorded by modernist historiography, then analyse the institutional and social framework – knowledge networks, innovation systems and institutional and social tools – that enabled genetic advances in the twentieth century. To accomplish this, we must trace the journey of seeds and knowledge across the Atlantic from places such as the Connecticut Agricultural Experiment Station (1918) to the Galician Biological Mission (1921), among others.
Reconciling Contrasting Relationships Between Relative Dispersion and Volume‐Mean Radius of Cloud Droplet Size Distributions
Authors: Lu Chunsong , Liu Yangang , Yum Seong Soo , Chen Jingyi , Zhu Lei , Gao Sinan , Yin Yan , Jia Xingcan , Wang Yuan 
Published: April 2020

AbstractCloud droplet spectral relative dispersion is critical to parameterizations of cloud radiative properties, warm‐rain initiation, and aerosol‐cloud interactions in models; however, there is no consistent relationship between relative dispersion and volume‐mean radius in literature, which hinders improving relative dispersion parameterization and calls for physical explanation. Here we show, by analyzing aircraft observations of cumulus clouds during Routine AAF [Atmospheric Radiation Measurement (ARM) Aerial Facility] Clouds with Low Optical Water Depths (CLOWD) Optical Radiative Observations, that the correlation between relative dispersion and volume‐mean radius changes from positive to negative as volume‐mean radius increases. With the new observation, we postulate that the sign of the correlation is determined by whether or not condensation (evaporation) occurs simultaneously with significant new activation (deactivation). The hypothesis is validated by simulations of both an adiabatic cloud parcel model and a parcel model accounting for entrainment‐mixing. A new quantity, first bin strength, is introduced to quantify this new observation. Theoretical analysis of truncated gamma and modified gamma size distributions further supports the hypothesis and reconciles the contrasting relationships between relative dispersion and volume‐mean radius, including the results in polluted fog observations. The results could shed new light on the so‐called “twilight zone” between cloudy and cloud‐free air, which in turn affects evaluation of aerosol‐cloud interactions and retrieval of aerosol optical depth.
GISS Model E2.2: A Climate Model Optimized for the Middle Atmosphere—Model Structure, Climatology, Variability, and Climate Sensitivity
Authors: Rind D. , Orbe C. , Jonas J. , Nazarenko L. , Zhou T. , Kelley M. , Lacis A. , Shindell D. , Faluvegi G. , Romanou A. , Russell G. , Tausnev N. , Bauer M. , Schmidt G. 
Published: April 2020

AbstractWe introduce a new climate model (GISS E2.2) that has been specially optimized for the middle atmosphere and whose output is being contributed to the CMIP6 archive. The top of the model is at a geopotential altitude of 89 km, and parameterizations of moist convection and various forms of gravity wave drag based on tropospheric processes are chosen specifically for this optimization. We first evaluate the model in its configuration as a coupled atmosphere‐chemistry model with respect to its simulation of the mean state of the middle atmosphere, from the mesosphere down through the upper troposphere/lower stratosphere. Then we assess its use as a coupled atmosphere‐ocean climate model by exploring its mean ocean climatology. To evaluate its variability, we report on its simulation of the primary modes in the troposphere, stratosphere, and ocean. Two climate change simulations are presented, the responses to instantaneous increases of 2xCO2 and 4xCO2, run with two different ocean models. Sensitivity studies are performed to illustrate the effect of parameterizations on the model results. We compare these results to the lower vertical resolution/top GISS Model E2.1, whose output has also been submitted to CMIP6. The different choices made for these models are explored. It is shown that important improvements in the circulation above and below the tropopause can be obtained when attention is paid to representation of middle atmosphere processes in climate model development.