bluuebunny/crossref_metadata_2025_split huggingface dataset:
Does family life education influence attitudes towards sexual and reproductive health matters among unmarried young women in India?
Authors: Tripathi Niharika 
Published: January 2021

Introduction
Inadequate efforts towards meeting the sexual and reproductive health needs of adolescents and young people, who disproportionately share the burden of unwanted pregnancies, poor maternal and child health outcomes, risks of RTI/STI and HIV/AIDS, increase the risk of losing much of the progress made towards the Millennium Development Goals over the last decade, particularly in the context of low-and-middle-income countries like India.

Data and methods
Using the nationally representative data on 160551 unmarried young women aged 15–24 years from the District Level Reproductive and Child Health Survey (DLHS: 2007–2008) in India, this research evaluated the demographic and socioeconomic differentials in the access to family life/sex education (FLE) among youth in India. Using the adjusted multiple logistic regression models, the association between access to family life/sex education and attitudes towards a range of sexual and reproductive health matters among young unmarried Indian women were investigated.

Results
Less than half of the unmarried young women had received some form of FLE (48 percent) in India. However, there were substantial demographic and socioeconomic variations in their access to FLE, as relatively less educated women from the poorest wealth quintiles, religious and social minorities (Muslims, Scheduled Castes/Scheduled Tribes) were significantly less likely to receive FLE as compared to other women. Importantly, the likelihood of holding favourable/positive attitudes towards reproductive processes, knowledge and discussion of contraceptive methods, precise awareness about the transmission pathways of RTIs/STIs and HIV/AIDS was significantly higher among those women in India who had access to FLE.

Conclusion
The present research underscores the protective role of family life education towards improving the sexual and reproductive life experiences of young people. It further underscores the vital need to implement a comprehensive and culturally appropriate programme of family life education in order to meet the sexual and reproductive health demands of the adolescents and young people in India.
Diffusion weighted imaging of the breast: Performance of standardized breast tumor tissue selection methods in clinical decision making
Authors: Wielema M. , Sijens P. E. , Dijkstra H. , De Bock G. H. , van Bruggen I. G. , Siegersma J. E. , Langius E. , Pijnappel R. M. , Dorrius M. D. , Oudkerk M. 
Published: January 2021

Objectives
In breast diffusion weighted imaging (DWI) protocol standardization, it is recently shown that no breast tumor tissue selection (BTTS) method outperformed the others. The purpose of this study is to analyze the feasibility of three fixed-size breast tumor tissue selection (BTTS) methods based on the reproducibility, accuracy and time-measurement in comparison to the largest oval and manual delineation in breast diffusion weighted imaging data.

Methods
This study is performed with a consecutive dataset of 116 breast lesions (98 malignant) of at least 1.0 cm, scanned in accordance with the EUSOBI breast DWI working group recommendations. Reproducibility of the maximum size manual (BTTS1) and of the maximal size round/oval (BTTS2) methods were compared with three smaller fixed-size circular BTTS methods in the middle of each lesion (BTTS3, 0.12 cm3 volume) and at lowest apparent diffusion coefficient (ADC) (BTTS4, 0.12 cm3; BTTS5, 0.24 cm3). Mean ADC values, intraclass-correlation-coefficients (ICCs), area under the curve (AUC) and measurement times (sec) of the 5 BTTS methods were assessed by two observers.

Results
Excellent inter- and intra-observer agreement was found for any BTTS (with ICC 0.88–0.92 and 0.92–0.94, respectively). Significant difference in ADCmean between any pair of BTTS methods was shown (p = <0.001–0.009), except for BTTS2 vs. BTTS3 for observer 1 (p = 0.10). AUCs were comparable between BTTS methods, with highest AUC for BTTS2 (0.89–0.91) and lowest for BTTS4 (0.76–0.85). However, as an indicator of clinical feasibility, BTTS2-3 showed shortest measurement times (10–15 sec) compared to BTTS1, 4–5 (19–39 sec).

Conclusion
The performance of fixed-size BTTS methods, as a potential tool for clinical decision making, shows equal AUC but shorter ADC measurement time compared to manual or oval whole lesion measurements. The advantage of a fixed size BTTS method is the excellent reproducibility. A central fixed breast tumor tissue volume of 0.12 cm3 is the most feasible method for use in clinical practice.
K3 polytopes and their quartic surfaces
Authors: Balletti Gabriele , Panizzut Marta , Sturmfels Bernd 
Published: January 2021

AbstractK3 polytopes appear in complements of tropical quartic surfaces. They are dual to regular unimodular central triangulations of reflexive polytopes in the fourth dilation of the standard tetrahedron. Exploring these combinatorial objects, we classify K3 polytopes with up to 30 vertices. Their number is 36 297 333. We study the singular loci of quartic surfaces that tropicalize to K3 polytopes. These surfaces are stable in the sense of Geometric Invariant Theory.
Automorphisms of a Clifford-like parallelism
Authors: Havlicek Hans , Pasotti Stefano , Pianta Silvia 
Published: January 2021

Abstract
We focus on the description of the automorphism group Γ∥ of a Clifford-like parallelism ∥ on a 3-dimensional projective double space (ℙ(HF
), ∥
ℓ
, ∥
r
) over a quaternion skew field H (of any characteristic). We compare Γ∥ with the automorphism group Γ
ℓ
of the left parallelism ∥
ℓ
, which is strictly related to Aut(H). We build up and discuss several examples showing that over certain quaternion skew fields it is possible to choose ∥ in such a way that Γ∥ is either properly contained in Γ
ℓ
or coincides with Γ
ℓ
even though ∥ ≠ ∥
ℓ
.
Construction of Frames on the Heisenberg Groups
Authors: Chang Der-Chen , Han Yongsheng , Wu Xinfeng 
Published: January 2021

Abstract
In this paper, we present a construction of frames on the Heisenberg group without using the Fourier transform. Our methods are based on the Calderón-Zygmund operator theory and Coifman’s decomposition of the identity operator on the Heisenberg group. These methods are expected to be used in further studies of several complex variables.
Foreign language learning boredom: Conceptualization and measurement
Authors: Li Chengchen , Dewaele Jean-Marc , Hu Yanhong 
Published: January 2021

Abstract
This article reports on a two-step investigation of foreign language learning boredom amongst Chinese university non-English-major EFL students and English teachers. In Study 1, 22 students and 11 English teachers were interviewed and 659 students responded to an open questionnaire, recalling and describing their experiences and perceptions of boredom in learning English. The data allowed a multidimensional conceptualization of Foreign Language Learning Boredom (FLLB), empirically supporting the control-value theory in educational psychology. Based on the conceptualization of FLLB, in Study 2, the Foreign Language Learning Boredom Scale (FLLBS) was developed. Through surveying 808 students in a pilot and 2,223 in the main study, a 7-factor FLLBS with 32 items was validated using exploratory and confirmatory factor analyses as well as further validity and reliability analyses. It is argued that FLLB is a crucial addition to the emerging field of foreign languagelearning emotion research.
Networked control system time-delay compensation based on PI-based dynamic matrix control
Authors: Tian Zhongda 
Published: January 2021

Abstract
The network-induced time-delay caused by the introduction of the communication network in a networked control system has a great negative impact on the stability and performance of the system. In order to compensate for the performance degradation of the networked control system caused by time-delay, a time-delay compensation method based on PI-based dynamic matrix control for networked control system is proposed. In this study, autoregressive integrated moving average model is used to predict the future time-delay. The predictive time-delay replaces the actual time-delay as a parameter of the controller. In order to improve the compensation effect of dynamic matrix control, the feedback structure of the PI control and the predictive ability of dynamic matrix control are combined. The new objective function of dynamic matrix control is combined with PI structure to obtain the optimal control increment value. The PI controller can correct the output of dynamic matrix control and reduce the deviation between the actual output and the predicted output. The effect of the model mismatch and interference on the system is reduced. The robustness and anti-interference performance of the system is improved. The controller can select the appropriate control value to transmit to the actuator to compensate for the effect of the random time-delay in the networked control system. The stability of the compensation method is proved. Through the simulation results, the effectiveness of the proposed time-delay compensation method is verified.
Association of hemoglobin H (HbH) disease with hemoglobin A1c and glycated albumin in diabetic and non-diabetic patients
Authors: He Dabao , Kuang Wenbin , Yang Xiaoling , Xu Miao 
Published: January 2021

Abstract

Objectives
Hemoglobin A1c (HbA1c) and glycated albumin (GA) are glycemic control status indicators in patients with diabetes mellitus. Hemoglobin H (HbH) disease is a moderately severe form of α-thalassemia. Here we examine the usefulness of HbA1c and GA in monitoring glycemic control in patients with HbH disease.

Methods
HbA1c, GA, and an oral glucose tolerance test were performed in 85 patients with HbH disease and 130 healthy adults. HbA1c was measured using five methods, including two systems based on cation-exchange high-performance liquid chromatography (Variant II Turbo 2.0 and Bio-Rad D100), a capillary zone electrophoresis method (Capillarys 3 TERA), a boronate affinity HPLC method (Premier Hb9210), and an immunoassay (Cobas c501).

Results
Significant lower levels of HbA1c were observed in patients with HbH disease than in healthy adults. In contrast, GA showed no statistically significant differences between participants with and without HbH disease. A considerable number of diabetic patients with HbH disease would be missed if using HbA1c as a diagnostic criterion for diabetes mellitus.

Conclusions
GA but not HbA1c is suitable for monitoring glycemic control in patients with HbH disease that can modify the discriminative ability of HbA1c for diagnosing diabetes.
Feeding the World in a Time of Climate Change
Authors: Loon Gary W. van , Sarkar Atanu 
Published: January 2021

Abstract
Maintaining a plentiful and high-quality food supply is essential to enable humans to survive and flourish in the coming decades. In 2019/20, an estimated 2.71 Gt of food grains have been produced worldwide. This fundamental food source is alone enough to supply sufficient nutritional kilocalories for the entire current global population. And nutrition is supplemented by the many other crops, livestock and sea food that are part of the overall food system. Yet, in the same year, it is estimated that around 821 million people, more than one tenth of the 7.6 billion people in the world were chronically hungry. There are many reasons for this. Waste—the FAO estimates that around one third of food produced is wasted—is certainly one, but also important are the inequities in the food production and supply system. While much can and should be done to correct these two critical problems, sustainable agriculture remains as the core feature of a healthy food supply.
Characteristic cycles and the microlocal geometry of the Gauss map, II
Authors: Krämer Thomas 
Published: January 2021

Abstract
We show that any Weyl group orbit of weights for the Tannakian group of semisimple holonomic

𝒟

{{\mathscr{D}}}

-modules on an abelian variety is realized by a Lagrangian cycle on the cotangent bundle. As applications we discuss a weak solution to the Schottky problem in genus five, an obstruction for the existence of summands of subvarieties on abelian varieties, and a criterion for the simplicity of the arising Lie algebras.
Base change for ramified unitary groups:
The strongly ramified case
Authors: Blondel Corinne , Tam Geo Kam-Fai 
Published: January 2021

Abstract
We compute a special case of base change of certain supercuspidal representations from a
ramified unitary group to a general linear group, both defined over a p-adic field of odd residual characteristic. In this special case, we require the given supercuspidal representation to contain a skew maximal simple stratum, and the field datum of this stratum to be of maximal degree, tamely ramified over the base field, and quadratic ramified over its subfield fixed by the Galois involution that defines the unitary group. The base change of this supercuspidal representation is described by a canonical lifting of its underlying simple character, together with the base change of the level-zero component of its inducing cuspidal type, modified by a sign attached to a quadratic Gauss sum defined by the internal structure of the simple character. To obtain this result, we study the reducibility points of a parabolic induction and the corresponding module over the affine Hecke algebra, defined by the covering type over the product of types of the given supercuspidal representation and of a candidate of its base change.
Sustainable nanocomposite films based on SiO2 and biodegradable poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) for food packaging
Authors: Qiu Yujuan , Fu Jirui , Sun Binqing , Ma Xiaojun 
Published: January 2021

Abstract
Sustainable nanocomposites with transparent, biodegradable, and enhanced mechanical and barrier properties were prepared by the incorporation of SiO2 into poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) films and subsequent solvent casting. The crystallinity of composites could be increased by 67% with appropriate contents of SiO2, which proved that SiO2 were effective nucleating agents for PHBH. And it was worth mentioning that the contributions of SiO2 to the crystallization and thermal stability of composites are proved effectively by Avrami relationship and Horowitz and Metzger method. More importantly, compared with PHBH, it had not only an enhancement about 40% and 60% on the tensile strength and elastic modulus, respectively, but also half the reduction of the moisture and oxygen permeability which were much higher than the values of conventional plastics. The above, in conjunction with the low migration rate measured in food substitutes, illustrated unambiguously that the nanocomposites might be suitable for potential application in food packaging.
Borsuk–Ulam theorem for filtered spaces
Authors: Biasi Carlos , Libardi Alice Kimie Miwa , de Mattos Denise , Ura Sergio Tsuyoshi 
Published: January 2021

Abstract
Let X and Y be pathwise connected and paracompact Hausdorff spaces equipped with free involutions

T
:

X
→
X

{T:X\to X}

and

S
:

Y
→
Y

{S:Y\to Y}

, respectively. Suppose that there exists a sequence

(

X
i

,

T
i

)

⁢

⟶

h
i

⁢

(

X

i
+
1

,

T

i
+
1

)

for
⁢
1

≤
i
≤
k

,

(X_{i},T_{i})\overset{h_{i}}{\longrightarrow}(X_{i+1},T_{i+1})\quad\text{for }%
1\leq i\leq k,

where, for each i,

X
i

{X_{i}}

is a pathwise connected and paracompact Hausdorff space equipped with a free involution

T
i

{T_{i}}

, such that

X

k
+
1

=
X

{X_{k+1}=X}

, and

h
i

:

X
i

→

X

i
+
1

{h_{i}:X_{i}\to X_{i+1}}

is an equivariant map, for all

1
≤
i
≤
k

{1\leq i\leq k}

. To achieve Borsuk–Ulam-type theorems, in several results that appear in the literature, the involved spaces X in the statements are assumed to be cohomological n-acyclic spaces. In this paper, by considering a more wide class of topological spaces X (which are not necessarily cohomological n-acyclic spaces), we prove that there is no equivariant map

f
:

(
X
,
T
)

→

(
Y
,
S
)

{f:(X,T)\to(Y,S)}

and we present some interesting examples to illustrate our results.
Studies of Penicillium species associated with blue mold disease of grapes and management through plant essential oils as non-hazardous botanical fungicides
Authors: Ghuffar Salman , Irshad Gulshan , Naz Farah , Khan Muhammad Azam 
Published: January 2021

Abstract
Blue mold caused by Penicillium species is a major fungal disease threatening the viticulture industry in Pakistan, responsible for deteriorating the quality of grapes during handling, transportation, and distribution. Identification-based approaches of Penicillium species provide a better strategy on accurate diagnosis and effective management. In this study, 13 isolates were recovered from symptomatic grape bunches at five main fruit markets of Rawalpindi district, Punjab province. Based on morphological data and multi-loci phylogenetic analysis, the isolates were identified as two distinct species viz. Penicillium expansum (eight isolates) and Penicillium crustosum (five isolates). Meanwhile, the pathogenicity test of Penicillium isolates presented by the inoculation of grape bunches showed various degrees of severity. For improving the fruit quality and eliminating the needs of synthetic fungicides, botanicals such as thyme (Thymus vulgaris L.), fennel (Foeniculum vulgare L.), garlic (Allium sativum L.), ginger (Zingiber officinale L.), and carum (Carum capticum L.) essential oils (EOs) at concentrations of 0.6, 0.9, 1.2, and 1.5 mg/mL were evaluated. In vitro studies indicated that thyme EO showed a highly significant reduction of fungal growth. Furthermore, the experiments related to reducing the decay development and average weight loss percentage of grapes revealed similar findings. Based on the results of this study, it is recommended that thyme EO can be used as an eco-friendly botanical fungicide against Penicillium spp. causing blue mold disease.
Attitudes of students at the faculty of Regional Development and International Studies toward plagiarism
Authors: Smolík Josef , Herbočková Lucie 
Published: January 2021

Abstract
This study aims to identify student attitudes to and perceptions of the topical phenomenon of plagiarism at the Faculty of Regional Development and International Studies at Mendel University in Brno, Czech Republic. The paper includes a theoretical framework describing plagiarism, academic ethics and provides a different perspective on plagiarism by many authors. Furthermore, the article presents a semi-structured questionnaire conducted in July 2018 with a sample of 235 respondents. The questionnaire was used in this research to explore students’ personal experiences, recommendations and other information relating to their attitudes to and perceptions of plagiarism. The results indicate that FRDIS students were familiar with the concept of plagiarism but not always able to clearly identify the correct answers. The recommendation for the Faculty, based on the data analysis, is to hold a tutorial on all the important aspects of plagiarism, such as citations, referencing, and common mistakes. This paper concludes that plagiarism can only be eliminated if it is tackled at the prevention phase, not merely through the use of warnings and threats.
Collective subjects and political mobilization in the public space: Towards a multitude capable of generating transformative practices
Authors: Belli Simone , Raventós Cristian López 
Published: January 2021

Abstract
During the last twenty years in Latin America, there has been a rise in governments drawn from self-defining progressive political currents. Consequently a revitalization is underway of the debate on the viability, pertinence, and characteristics of the welfare state in the twenty-first century. In this context, the present article explores emerging social practices that redefine the various senses of the public space; practices that go beyond nation states, situated in a global territoriality, articulating languages and eliciting emotions capable of producing new socialities. The multitude is discussed as a social subject capable of generating transformative practices. Specifically, the article analyzes the way in which the singularities of occupations raise further questions for nation states. The analysis focuses on global movements such as #Occupy camping out on squares.
The failure of the welfare ideology and system in Hong Kong: A historical perspective
Authors: Yu Andrew 
Published: January 2021

Abstract
At present, Hong Kong does not have a publicly-managed mandatory contributory retirement protection scheme. The Hong Kong Government launched a consultation on the universal pension scheme in 2015. The Government’s plan provoked many controversies and eventually failed. This paper will examine the problem of the welfare ideology and system in Hong Kong from a historical perspective, taking the universal pension scheme as an example. This paper argues that the reason for the failure of the universal pension scheme was that Hong Kong people do not have a complete sense of citizenship and hold a distorted welfare ideology for historical reasons. This paper is one of the first to offer some reflections on the question of poverty and lack of social justice from a historical perspective.
Analysing integration issues of the microgrid system with utility grid network
Authors: Tesfaye Mulualem , Khan Baseem , Mahela Om Prakash , Alhelou Hassan Haes , Gupta Neeraj , Khosravy Mahdi , Senjyu Tomonobu , Guerrero Josep M. 
Published: January 2021

Abstract
Generation of renewable energy sources and their interfacing to the main system has turn out to be most fascinating challenge. Renewable energy generation requires stable and reliable incorporation of energy to the low or medium voltage networks. This paper presents the microgrid modeling as an alternative and feasible power supply for Institute of Technology, Hawassa University, Ethiopia. This microgrid consists of a 60 kW photo voltaic (PV) and a 20 kW wind turbine (WT) system; that is linked to the electrical distribution system of the campus by a 3-phase pulse width modulation scheme based voltage source inverters (VSI) and supplying power to the university buildings. The main challenge in this work is related to the interconnection of microgrid with utility grid, using 3-phase VSI controller. The PV and WT of the microgrid are controlled in active and reactive power (PQ) control mode during grid connected operation and in voltage/frequency (V/F) control mode, when the microgrid is switched to the stand-alone operation. To demonstrate the feasibility of proposed microgrid model, MATLAB/Simulink software has been employed. The performance of fully functioning microgrid is analyzed and simulated for a number of operating conditions. Simulation results supported the usefulness of developed microgrid in both mode of operation.