bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contraceptive use among women through their later reproductive years: Findings from an Australian prospective cohort study
Authors: Harris Melissa L. , Egan Nicholas , Forder Peta M. , Coombe Jacqueline , Loxton Deborah 
Published: August 2021

Objective
Examine patterns of contraceptive use and contraceptive transitions over time among an Australian cohort of women through their later reproductive years.

Study design
Latent Transition Analysis was performed using data on 8,197 women from the Australian Longitudinal Study on Women’s Health’s 1973–78 cohort to identify distinct patterns of contraceptive use across 2006, 2012 and 2018. Women were excluded from the analysis at time points where they were not at risk of an unintended pregnancy. Latent status membership probabilities, item-response probabilities, transitions probabilities and the effect of predictors on latent status membership were estimated and reported.

Results
Patterns of contraceptive use were relatively consistent over time, particularly for high efficacy contraceptive methods with 71% of women using long-acting reversible contraceptives in 2012 also using long-acting reversible contraceptives in 2018. Multiple contraceptive use was highest in 2006 when women were aged 28–33 years (19.3%) but declined over time to 14.3% in 2018 when women were aged 40–45 years. Overall, contraceptive patterns stabilised as the women moved into their late 30s and early 40s.

Conclusions
Although fertility declines with age, the stability of contraceptive choice and continued use of short-acting contraception among some women suggests that a contraceptive review may be helpful for women during perimenopause so that they are provided with contraceptive options most appropriate to their specific circumstances.
The association between postpartum hemorrhage and postpartum depression: A Swedish national register-based study
Authors: Liu Can , Butwick Alexander , Sand Anna , Wikström Anna-Karin , Snowden Jonathan M. , Stephansson Olof 
Published: August 2021

Background
Postpartum hemorrhage is an important cause of maternal death and morbidity. However, it is unclear whether women who experience postpartum hemorrhage are at an increased risk of postpartum depression.

Objectives
To examine whether postpartum hemorrhage is associated with postpartum depression.

Methods
We conducted a national register-based cohort study of 486,476 Swedish-born women who had a singleton livebirth between 2007 and 2014. We excluded women with pre-existing depression or who filled a prescription for an antidepressant before childbirth. We classified postpartum depression up to 12 months after giving birth by the presence of an International Classification of Diseases, version 10 (ICD-10) diagnosis code for depression or a filled outpatient prescription for an antidepressant. We used Cox proportional hazard models, adjusting for maternal sociodemographic and obstetric factors.

Results
Postpartum depression was identified in 2.0% (630/31,663) of women with postpartum hemorrhage and 1.9% (8601/455,059) of women without postpartum hemorrhage. In our unadjusted analysis, postpartum hemorrhage was not associated with postpartum depression (unadjusted hazard ratio (HR) = 1.06, 95% confidence interval (CI) 0.97–1.15). After adjusting for maternal age, parity, education, cohabitation status, maternal smoking status, and early pregnancy maternal BMI, gestational age, and birthweight, the association did not appreciably change, with confidence intervals overlapping the null (adjusted HR = 1.08, 95% CI 0.99, 1.17).

Conclusions
Within a population-based cohort of singleton women in Sweden with no prior history of depression, postpartum hemorrhage was not associated with postpartum depression.
The tumor patient in the COVID-19 pandemic–an interview-based study of 30 patients undergoing systemic antiproliferative therapy
Authors: Kaiser Ulrich , Vehling-Kaiser Ursula , Schmidt Jörg , Hoffmann Ana , Kaiser Florian 
Published: August 2021

Introduction
Five months after COVID-19 first occurred and protective regulations were introduced, patients at three outpatient hematological/oncological centers in Bavaria who had received antiproliferative tumor therapy (n = 30) were questioned about the pandemic’s impact.

Patients, materials and methods
In recorded semi-structured telephone interviews, the patients answered questions about their quality of life, treatment procedures, their relationship with medical care staff and modern communication technologies. Each interview consisted of 28 questions. The average length of an interview was 30 minutes. The interviews were transcribed and analyzed by means of a qualitative content analysis according to Mayring.

Results
The COVID-19 pandemic adds to the burden of patients by decreasing their social contacts. They perceived the new isolation and protective measures in outpatient clinics as mostly positive and said its impact had been only slightly adverse. With the implemented safety measures, they feel adequately protected and looked after and want their antiproliferative therapy to be performed as scheduled. Talking to medical staff provides additional reassurance.

Conclusion
Although the COVID-19 pandemic has exacerbated the social isolation of tumor patients, it has had only a minor effect on tumor therapy in the surveyed patient population. The benefits of modern communication options to tumor patients remains uncertain and should be investigated further in future studies.
Preparation and characterizations of antibacterial–antioxidant film from soy protein isolate incorporated with mangosteen peel extract
Authors: Zhou Xin , Dai Qingyin , Huang Xi , Qin Zhiyong 
Published: August 2021

Abstract
The mangosteen peel extract (MPE) was used to obtain soy protein isolate (SPI) films. The results show that MPE exhibited a high content of total phenolics and antioxidant activity. Moreover, the MPE can enhance the antibacterial–antioxidant properties, UV-visible light barrier properties, and water-resistant properties of the SPI films. The presence of MPE resulted in an increase in water vapor permeability and hydrophobicity. The extract addition also reduced the film’s crystallinity along with a decrease in the mechanical property and lowering of the maximum degradation temperature. Attenuated total reflectance Fourier transform infrared spectroscopy revealed that the polyphenols in MPE could interact with SPI through hydrogen bonds and hydrophobic interactions, and the addition of MPE changed the secondary structure of SPI with a decrease in β-sheets and an increase in β-turns and random coils. Scanning electron microscopy showed that all the films exhibited smooth and homogenous morphology on the surface and on some layers through cross-sectional images. Our results suggested that the MPE would be a promising ingredient to make SPI films used as an active packaging material.
Algebro-geometric integration of a modified shallow wave hierarchy
Authors: He Guoliang , Zhai Yunyun , Zheng Zhenzhen 
Published: August 2021

Abstract
By introducing two sets of Lenard recursion relations, we derive a hierarchy of modified shallow wave equations associated with a 3 × 3 matrix spectral problem with three potentials from the zero-curvature equation. The Baker–Akhiezer function and two meromorphic functions are defined on the trigonal curve which is introduced by utilizing the characteristic polynomial of the Lax matrix. Analyzing the asymptotic properties of the Baker–Akhiezer function and two meromorphic functions at two infinite points, we arrive at the explicit algebro-geometric solutions for the entire hierarchy in terms of the Riemann theta function by showing the explicit forms of the normalized Abelian differentials of the third kind.
A fractional-order ship power system: chaos and its dynamical properties
Authors: Rajagopal Karthikeyan , Duraisamy Prakash , Tadesse Goitom , Volos Christos , Nazarimehr Fahimeh , Hussain Iqtadar 
Published: August 2021

AbstractIn this research, the ship power system is studied with a fractional-order approach. A 2-D model of a two-generator parallel-connected is considered. A chaotic attractor is observed for particular parameter values. The fractional-order form is calculated with the Adam–Bashforth–Moulton method. The chaotic response is identified even for the order 0.99. Phase portrait is generated using the Caputo derivative approach. Wolf’s algorithm is used to calculate Lyapunov exponents. For the considered values of parameters, one positive Lyapunov exponent confirms the existence of chaos. Bifurcation diagrams are presented to analyze the various dynamical behaviors and bifurcation points. Interestingly, the considered system is multistable. Also, antimonotonicity, period-doubling, and period halving are observed in the bifurcation diagram. As the last step, a fractional-order controller is designed to remove chaotic dynamics. Time plots are simulated to show the effectiveness of the controller.
Quantum motion control for packaging machines
Authors: Caporali Roberto P. L. 
Published: August 2021

Abstract
In the present work, we give a description of a quantum motion controller to be used in automatic machines for an automated process, especially in packaging machines. The entanglement properties of the quantum systems are applied to have a perfect synchronization among the N slave axes. A detailed description of an architecture for a quantum motion controller is given. A quantum correction unit, included in the quantum motion control device and based on quantum inference, is also defined and described. The paper describes the characteristics of the robust control in the quantum correction unit. A comparison with traditional motion controllers is established showing the improved performances relative to the jitter compensation.
(Mis) perception of consonant clusters and short vowels in English as a foreign language
Authors: Leung Alex Ho-Cheong , Young-Scholten Martha , Almurashi Wael , Ghadanfari Saleh , Nash Chloe , Outhwaite Olivia 
Published: August 2021

AbstractResearch addressing second language (L2) speech is expanding. Studies increasingly demonstrate that a learner’s first language (L1) filters the L2 input, resulting in learners misperceiving what they have heard. This L1 filter can result in learners perceiving sounds not actually present in the input. We report on a study which explored English consonant clusters and short, unstressed vowel perception of 70 Arabic-, Mandarin-, Spanish-speaking foreign language learners and 19 native English speakers. These are the vowels which speakers from two of the L1s typically insert in their production of English to break up L1-disallowed consonant clusters and the schwa which is documented to cause both perception and production problems. Results show that participants misperceive stimuli containing consonant clusters and counterparts where clusters are broken up by epenthetic/prothetic elements. In line with Sakai, Mari & Colleen Moorman 2018. We call for the inclusion of such findings on perception in pedagogical advice on pronunciation.
Diet and activity pattern of leopard in relation to prey in tropical forest ecosystem
Authors: Palei Himanshu Shekhar , Pradhan Tilak , Sahu Hemanta Kumar , Nayak Anup Kumar 
Published: August 2021

Abstract
Understanding the predator–prey relationship is essential for implementing effective conservation management practices on threatened species. Leopard is a threatened apex mammalian predator that plays a crucial role in ecosystem functions in India’s tropical forest. We assessed the diet and activity pattern of leopards in relation to their prey using diet analysis and camera trapping data from Similipal Tiger Reserve, eastern India. Our results indicated that leopard prefers medium-sized prey such as wild pig, common langur and barking deer represented 60% of the total biomass consumed collectively. Results of 6413 camera trap night in 187 locations revealed that leopards showed cathemeral activity pattern and exhibited positive co-occurrence pattern and significant spatial and temporal overlap with their main prey, the wild pig. However, leopards showed very low spatial and temporal overlap with the second main prey, the common langur. Leopards avoided humans and showed low spatial and temporal overlap with humans. Our findings reveal that a trade-off might drive leopard activity between consuming prey and avoiding anthropogenic disturbances like human activity.
Crystal structure of dichlorido-bis(4-chlorophenyl-κC)-bis(triphenylarsine oxide-κO)tin(IV), C48H38As2Cl4O2Sn
Authors: Lee See Mun , Lo Kong Mun , Tiekink Edward R. T. 
Published: August 2021

Abstract
C48H38As2Cl4O2Sn, monoclinic, P21/n (no. 14), a = 10.8019(1) Å, b = 14.6976(1) Å, c = 13.6266(1) Å, β = 90.983(1)°, V = 2163.07(3) Å3, Z = 2, R

gt
(F) = 0.0199, wR

ref
(F
2) = 0.0514, T = 100 K.
A zoosemiotic approach to the transactional model of communication
Authors: Cerrone Mirko , Mäekivi Nelly 
Published: August 2021

Abstract
The analysis of social communication in other-than-human animals poses several theoretical challenges due to the complexity of individual and extra-individual variables. Some previous studies have found a valuable solution in Uexküll’s work by expanding and adapting its usage for the study of communication in a heurtistic manner. An Umwelt analysis provides a theoretical toolbox, which allows researchers to take an emic perspective on the lives and phenomenal world of other animals. However, Umwelt and its elaborations do not allow for a clear distinction between acts of perception and communication and seem to ignore factors that escape the specific communication contexts under analysis. Thus, moving away from the existing linear and cyclical approaches to communication, we propose a complementary approach to the study of social communication by combining Barnlund’s transactional model of communication with Umwelt theory and the functional circle more specifically. Our elaborated model conceives social communication as the process of creating meaning through the interaction of two (or more) subjects and emphasizes the role of species-specific and individual features in its creation. Our goal is to re-evaluate the research on social communication of other-than-human animals by advocating for the theoretical and empirical potential of Umwelt, especially pertaining to animals with complex Umwelten. Our model offers a valuable solution to the analysis of intraspecies communication that accounts for the role of private and public cues as well as the subjects’ specific behaviors, messages, and context in the creation of meaning.
State price density estimation with an application to the recovery theorem
Authors: Sanford Anthony 
Published: August 2021

Abstract
This article introduces a model to estimate the risk-neutral density of stock prices derived from option prices. To estimate a complete risk-neutral density, current estimation techniques use a single mathematical model to interpolate option prices on two dimensions: strike price and time-to-maturity. Instead, this model uses B-splines with at-the-money knots for the strike price interpolation and a mixed lognormal function that depends on the option expiration horizon for the time-to-maturity interpolation. The results of this “hybrid” methodology are significantly better than other risk-neutral density extrapolation methods when applied to the recovery theorem.
On eigenvalues of a matrix arising in energy-preserving/dissipative continuous-stage Runge-Kutta methods
Authors: Yamamoto Yusaku 
Published: August 2021

Abstract
In this short note, we define an s × s matrix Ks
constructed from the Hilbert matrix

H

s

=

(

1

i
+
j
-
1

)

i
,
j
=
1

s

{H_s} = \left( {{1 \over {i + j - 1}}} \right)_{i,j = 1}^s

and prove that it has at least one pair of complex eigenvalues when s ≥ 2. Ks
is a matrix related to the AVF collocation method, which is an energy-preserving/dissipative numerical method for ordinary differential equations, and our result gives a matrix-theoretical proof that the method does not have large-grain parallelism when its order is larger than or equal to 4.
Kernel estimation for Lévy driven stochastic convolutions
Authors: Comte Fabienne , Genon-Catalot Valentine 
Published: August 2021

Abstract
We consider a Lévy driven stochastic convolution, also called continuous time Lévy driven moving average model

X
⁢

(
t
)

=

∫
0
t

a
⁢

(

t
-
s

)

⁢

d
Z

⁢

(
s
)

X(t)=\int_{0}^{t}a(t-s)\,dZ(s)

, where 𝑍 is a Lévy martingale and the kernel

a

(
.
)

a(\,{.}\,)

a deterministic function square integrable on

R
+

\mathbb{R}^{+}

.
Given 𝑁 i.i.d. continuous time observations

(

X
i

⁢

(
t
)

)

t
∈

[
0
,
T
]

(X_{i}(t))_{t\in[0,T]}

,

i
=

1
,
…
,
N

i=1,\dots,N

, distributed like

(

X
⁢

(
t
)

)

t
∈

[
0
,
T
]

(X(t))_{t\in[0,T]}

, we propose two types of nonparametric projection estimators of

a
2

a^{2}

under different sets of assumptions.
We bound the

L
2

\mathbb{L}^{2}

-risk of the estimators and propose a data driven procedure to select the dimension of the projection space, illustrated by a short simulation study.
Stance in press releases versus business news: a lexical bundle approach
Authors: De Cock Sylvie , Granger Sylviane 
Published: August 2021

AbstractPress releases represent a hybrid business genre, which combines an informational and a promotional communicative purpose. The objective of the study is to assess the extent to which this duality is reflected in the language used, and more particularly in the expression of stance, by comparing corporate press releases with another business genre that is essentially informational, namely business news reporting. The focus is on lexical bundles, as they have been found to be a major conveyor of attitudinal and epistemic stance. Relying on the pattern-matching approach to language, 3-word lexical bundles are extracted from a 1-million-word corpus of press releases (BeRel) and set against those found in a similar-sized corpus of business news (BeNews). An examination of the key bundles (keyword analysis) in each corpus reveals that the bundles that are distinctive to press releases differ significantly from those found in BeNews, particularly in the expression of modal, evaluative and personal stance.
The Mammalian Olfactory Bulb Contributes to the Adaptation of Odor Responses: A Second Perceptual Computation Carried Out by the Bulb
Authors: Storace Douglas A. , Cohen Lawrence B. 
Published: August 2021

AbstractWhile humans and other mammals exhibit adaptation to odorants, the neural mechanisms and brain locations involved in this process are incompletely understood. One possibility is that it primarily occurs as a result of the interactions between odorants and odorant receptors on the olfactory sensory neurons in the olfactory epithelium. In this scenario, adaptation would arise as a peripheral phenomenon transmitted to the brain. An alternative possibility is that adaptation occurs because of processing in the brain. We made an initial test of these possibilities using a two-color imaging strategy to simultaneously measure the activity of the olfactory receptor nerve terminals (input to the bulb) and mitral/tufted cell apical dendrites (output from the bulb) in anesthetized and awake mice. Repeated odor stimulation at the same concentration resulted in a decline in the bulb output, while the input remained relatively stable. Thus, the mammalian olfactory bulb appears to participate in generating the perception of olfactory adaptation under this stimulus condition. Similar experiments conducted previously showed that the bulb may also participate in the perception of concentration invariance of odorant recognition (Storace and Cohen, 2017); thus, the bulb is simultaneously carrying out more than one computation, as is true of other mammalian brain regions and perhaps is the case for all animals with sophisticated nervous systems. However, in contrast with other sensory systems (Van Essen et al., 1992), the very first processing stage in the olfactory system has an output that may directly represent perceptions.
Source Characteristics of the 2019 Mw 6.5 Ambon, Eastern Indonesia, Earthquake Inferred from Seismic and Geodetic Data
Authors: Meilano Irwan , Salman Rino , Rahmadani Suchi , Shi Qibin , Susilo Susilo , Lindsey Eric , Supendi Pepen , Daryono Daryono 
Published: August 2021

AbstractThe 26 September 2019 Mw 6.5 Ambon earthquake has been the largest instrumentally recorded event to occur in Ambon, the capital city of Maluku Islands, eastern Indonesia, and ruptured a previously unmapped active fault. In this study, we use seismic and geodetic data to investigate the source characteristics of the event. Our results show that the rupture process was complex in both the rupture initiation and slip directions. In addition, the rupture was mostly strike-slip motion with normal component and pure reverse slip in the north of the inverted fault. Our analysis of campaign and continuous Global Positioning System (GPS) velocity fields estimates that the fault has a 4.9 [4.0, 5.5] mm/yr slip rate with an earthquake recurrence interval of 115 [102, 141] yr. In addition, a comparison of the horizontal strain-rate tensor derived from GPS velocity fields with historical earthquake data shows that Ambon Island and the nearby regions have a high strain accumulation rate correlated with the distribution of Mw≥6 earthquakes, indicating that the regions are seismically active and possibly will experience more Ambon-type earthquakes in the future.
Joint Inversion of Rupture across a Fault Stepover during the 8 August 2017 Mw 6.5 Jiuzhaigou, China, Earthquake
Authors: Zhang Yong , Feng Wanpeng , Li Xingxing , Liu Yajing , Ning Jieyuan , Huang Qinghua 
Published: August 2021

Abstract
The 8 August 2017 Mw 6.5 Jiuzhaigou earthquake occurred in a tectonically fractured region in southwest China. We investigate the multifault coseismic rupture process by jointly analyzing teleseismic, strong-motion, high-rate Global Positioning System, and Interferometric Synthetic Aperture Radar (InSAR) datasets. We clearly identify two right-stepping fault segments and a compressional stepover based on variations in focal mechanisms constrained by coseismic InSAR deformation data. The average geometric parameters of the northwest and southeast segments are strike = 130°/dip = 57° and strike = 151°/dip = 70°, respectively. The rupture model estimated from a joint inversion of the seismic and geodetic datasets indicates that the rupture initiated on the southeastern segment and jumped to the northwestern segment, resulting in distinctive slip patches on the two segments. A 4-km-long coseismic slip gap was identified around the stepover, consistent with the aftershock locations and mechanisms. The right-stepping segmentation and coseismic rupture across the compressional stepover exhibited by the 2017 Jiuzhaigou earthquake are reminiscent of the multifault rupture pattern during the 1976 Songpan earthquake sequence farther south along the Huya fault system in three successive Ms∼7 events. Although the common features of fault geometry and stepover may control the similarity in event locations and focal mechanisms of the 2017 and 1976 sequences, the significantly wider (~15 km) stepover in the 1976 sequence likely prohibited coseismic rupture jumping and hence reduced seismic hazard.