bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamic properties of spin-imbalance harmonically trapped one-dimensional attractive 6Li atomic gas
Authors: Al-Khzon H. A. , Al-Sugheir M. K.
Published: January 2021

The thermodynamic properties of 6Li atomic gas system, with imbalanced spin populations trapped in one-dimension, were systematically investigated using the Static Fluctuation Approximation. The two-body interaction used is an attractive contact potential. The effects of gas parameter [Formula: see text] and spin polarization [Formula: see text], on the thermodynamic properties and effective magnetic field were investigated. We observed a decrease in [Formula: see text] and an enhancement in [Formula: see text] and [Formula: see text] with increasing [Formula: see text]. At strong interaction and at [Formula: see text], the behavior of entropy with [Formula: see text] indicated two different phases. At small spin polarization [Formula: see text], the system could be in Fulde–Ferrell–Larkin Ovchinnikov (FFLO) state, while above [Formula: see text], the system might be in normal state. In addition, we found a clear decrease in both [Formula: see text] and [Formula: see text] and an enhancement in [Formula: see text] with the increase of the interaction strength. Our results are consistent with the reported results obtained by the mean-field Bogoliubov–de Gennes method, the Bardeen–Cooper–Schrieffer (BCS) approximation and Nozieres–Schmitt–Rink (NSR) theory.
Real-Time Implementation of Traffic Signs Detection and Identification Application on Graphics Processing Units
Authors: Ayachi Riadh , Afif Mouna , Said Yahia , Abdelali Abdessalem Ben
Published: January 2021

Traffic signs detection has become an important feature of Advanced driving assisting systems and even self-driving cars. In this paper, we present an implementation of a traffic signs detection method on Graphics Processing Units (GPU) under real-time conditions. The proposed model is based on deep convolutional neural networks, a deep learning model used in computer vision applications. The deep convolutional neural networks have recently been used to solve many computer vision tasks successfully. Unlike old techniques, the model is used to detect and identify the traffic signs at the same time without the need for any external modules. To achieve real-time inference, we implement the proposed model on the GPU as a natural choice for the implementation of deep learning-based models. Also, we build large traffic signs detection dataset. The dataset contains 10[Formula: see text]000 images captured from the Chinese roads under real-world factors like lightning, occlusion, complex background, etc. 73 traffic sign classes were considered in this dataset. The evaluation of the proposed model on the proposed dataset shows robust performance in terms of speed and accuracy.
A Dynamic Metaheuristic Network for Numerical Multi-objective Optimization
Authors: Acan Adnan , Tamouk Jamshid
Published: January 2021

This research work proposes a dynamic metaheuristic network that is a layered interconnection of a number of multi-objective optimization (MOO) algorithms. Each node of the network corresponds to a MOO metaheuristic and interconnections between the nodes represent the flow of subpopulation elements in a feed-forward direction. The proposed method runs in consecutive sessions such that a session starts with the assignment of subpopulations to each of the individual nodes, proceeds with execution of node metaheuristics within their algorithmic framework and ends with feeding the improved subpopulations to the connected forward nodes. The network architecture is dynamic in the sense that nodes change their layers at the end of each session. At the end of each session, elements of the improved subpopulations are fed forward to nodes in subsequent layers which update their own subpopulations using uniform random sampling. The proposed method is evaluated on CEC2009, ZDT, DTLZ, WFG benchmarks and several real-world MOO problems using the experimental framework described for these problem instances. Comparative evaluations against a large set of state-of-the-art algorithms exhibited that the proposed method with its novel dynamic network architecture and subpopulation assignment strategy is promising both in the quality of the extracted Pareto fronts and in leading future research on ensembles of MOO algorithms.
Enhanced Hoeffding Anytime Tree: A Real-time Algorithm for Early Prediction of Heart Disease
Authors: Benllarch Mariam , Benhaddi Meriem , El Hadaj Salah
Published: January 2021

Healthcare studies prove that heart disease has increased in recent decades and the growth of patients suffering from heart problems does not stop. In this regard, various data mining techniques have been used by machine learning researchers to support health professionals in the decision-making of this disease. Many of these techniques are based on basic machine learning classifiers, others integrate these classifiers in streaming systems in order to accelerate the execution time. However, some heart situations demand early detection to reduce the chance of having a dangerous illness and the existing machine learning solutions are not appropriate for real-time analysis, because we need to accelerate the algorithms themselves. In this paper, an online algorithm called Enhanced Hoeffding Anytime Tree (EHATT) is proposed to efficiently predict heart disease. EHATT is based on Hoeffding Anytime Tree (HATT), the last version of incremental decision trees. The amelioration that was made by EHATT on HATT, is the change of the node splitting evaluation function with another more suitable for split measures. To examine the performance of EHATT, four metrics are evaluated: classification accuracy, time, memory, and tree size. The experiment results show that EHATT achieves good performance to predict heart disease.
MULTIMODE WRINKLING PATTERNS OF IRON FILMS SPUTTER DEPOSITED ON FLEXIBLE SUBSTRATES WITH GRADIENT MODULUS
Authors: ZHANG YONGJU , CAI PINGGEN , ZHANG LI , YU SENJIANG
Published: January 2021

Wrinkling patterns are beneficial for a wide range of engineering applications including flexible electronics, tuned optics, sensoring, energy harvesting, surface wetting and biomedicine. Here we report on controllable multimode wrinkling patterns of metal (iron) films sputter deposited on flexible substrates with gradient modulus. It is found that disordered wrinkles (G1 wrinkling) form in the weakly crosslinking region at the early stage of film deposition. Disordered labyrinth wrinkles with larger wavelengths and ordered stripe wrinkles localized by cracks (both G2 wrinkling) appear in the strongly crosslinking region for the samples with small film thickness and large thickness, respectively. The coexistence of the labyrinth G1 wrinkling and labyrinth G2 wrinkling (or stripe G2 wrinkling) can be obtained by tuning the substrate modulus and film thickness. The morphologies, evolutions and mechanisms of such wrinkles are discussed in detail based on the stress theory. This study can promote better understanding of the substrate effect on the complex wrinkling patterns.
⋆-cohomology, third type Chern character and anomalies in general translation-invariant noncommutative Yang–Mills
Authors: Varshovi Amir Abbass
Published: January 2021

A representation of general translation-invariant star products ⋆ in the algebra of [Formula: see text] is introduced which results in the Moyal–Weyl–Wigner quantization. It provides a matrix model for general translation-invariant noncommutative quantum field theories in terms of the noncommutative calculus on differential graded algebras. Upon this machinery a cohomology theory, the so-called ⋆-cohomology, with groups [Formula: see text], [Formula: see text], is worked out which provides a cohomological framework to formulate general translation-invariant noncommutative quantum field theories based on the achievements for the commutative fields, and is comparable to the Seiberg–Witten map for the Moyal case. Employing the Chern–Weil theory via the integral classes of [Formula: see text] a noncommutative version of the Chern character is defined as an equivariant form which contains topological information about the corresponding translation-invariant noncommutative Yang–Mills theory. Thereby, we study the mentioned Yang–Mills theories with three types of actions of the gauge fields on the spinors, the ordinary, the inverse, and the adjoint action, and then some exact solutions for their anomalous behaviors are worked out via employing the homotopic correlation on the integral classes of ⋆-cohomology. Finally, the corresponding consistent anomalies are also derived from this topological Chern character in the ⋆-cohomology.
Introducing DerivatizeME and its Application in the Augmentation of a Natural Product Library
Authors: Sigauke Lester T. , Taştan Bishop Özlem , Lobb Kevin A.
Published: January 2021

The large chemical space universe can be traversed by screening libraries of compounds that possess novel medicinally relevant chemistries, properties and complexity criteria. These libraries can be populated with the use of exhaustive, de novo approaches or inspired, combinatorial approaches. By assuming that natural products within screening libraries may be classified as a source of feedstock for populating virtual libraries, they can act as scaffolds upon which exhaustive approaches may be used in exploring chemical space. In order to achieve this, we have built DerivatizeME as a tool that enumerates derivatives of query compounds in order to evaluate their relevance for further assessment and development. This technique was applied to natural products present in the South African natural compound database (SANCDB). By expanding the chemical space of SANCDB compounds through the generation of SANCDB derivatives, we were able to graduate some natural products that were in undesirable regions of medicinally relevant chemical space, to acceptable regions of this chemical space. These modified scaffolds are available for further development, testing and evaluation in a manner similar to natural product driven focused libraries. The natural product parent is used, through its derivatives, instead of being discarded from screening protocols. This approach has the potential to enhance the efficiency of the natural product library in providing successful hits, amplifying the potential that they possess to access both novel bioactives and privileged scaffolds which may have otherwise been overlooked.
Copy-on-Abundant-Write for Nimble File System Clones
Authors: Zhan Yang , Conway Alex , Jiao Yizheng , Mukherjee Nirjhar , Groombridge Ian , Bender Michael A. , Farach-Colton Martin , Jannen William , Johnson Rob , Porter Donald E. , Yuan Jun
Published: January 2021

Making logical copies, or clones, of files and directories is critical to many real-world applications and workflows, including backups, virtual machines, and containers. An ideal clone implementation meets the following performance goals: (1) creating the clone has low latency; (2) reads are fast in all versions (i.e., spatial locality is always maintained, even after modifications); (3) writes are fast in all versions; (4) the overall system is space efficient. Implementing a clone operation that realizes all four properties, which we call a
nimble clone
, is a long-standing open problem.

This article describes nimble clones in B-ϵ-tree File System (BetrFS), an open-source, full-path-indexed, and write-optimized file system. The key observation behind our work is that standard copy-on-write heuristics can be too coarse to be space efficient, or too fine-grained to preserve locality. On the other hand, a write-optimized key-value store, such as a Bε-tree or an log-structured merge-tree (LSM)-tree, can decouple the logical application of updates from the granularity at which data is physically copied. In our write-optimized clone implementation, data sharing among clones is only broken when a clone has changed enough to warrant making a copy, a policy we call
copy-on-abundant-write
.

We demonstrate that the algorithmic work needed to batch and amortize the cost of BetrFS clone operations does not erode the performance advantages of baseline BetrFS; BetrFS performance even improves in a few cases. BetrFS cloning is efficient; for example, when using the clone operation for container creation, BetrFS outperforms a simple recursive copy by up to two orders-of-magnitude and outperforms file systems that have specialized Linux Containers (LXC) backends by 3--4×.
Stability Analysis of Multispan Pipeline Embedded in Temperature-Dependent Matrix
Authors: Wu Nan , Liu Yongshou , Tong Guojun , Dai Jiayin
Published: January 2021

In this paper, dynamic stiffness method is used to study the stability of multispan pipelines in temperature-dependent matrix. The effects of temperature changes and different span combinations on the natural frequency, critical velocity, and critical pressure of pipelines are discussed. The main conclusions are obtained and shown as follows. The increase of temperature will lead to the decrease of the first three order natural frequencies. The first two order critical velocities and critical pressure of the system will also decrease with increasing temperature. The change of span combination has no influence on the first-order critical velocity and first-order critical pressure of the system, but it has influence on the second order. The influence of the change of span combination on the first-order natural frequency is regular, but that on the second-order and third-order is not. The increase of the velocity will change the instability form of systems with different span combinations, while the change of the pressure inside the tube will not change the instability form of the system.
Analysis on the Influencing Factors of Driving Behaviours Based on Theory of Planned Behaviour
Authors: Jin Lisheng , Guo Baicang , Jiang Yuying , Hua Qiang
Published: January 2021

Driving behaviour is a complex and multidisciplinary research domain, and bad driving behaviours that threaten the safety of road users should be refrained. In order to better educate, manage, and restrain driver’s behaviours, from the perspective of human factors and psychology, the present study deconstructed driving behaviours based on theory of planned behaviour (TPB) into five categories: mistakes (Mis), lapses and slips (LaS), violations (Vio), driving experience (Exp), and safety attitude and awareness (SAA). According to today’s practical traffic rules and conditions in China, a driving behaviour questionnaire was built as an analysing tool and the survey data were collected in accordance with the demographic of Chinese drivers. Furthermore, a driving behaviour analysis model contains the aforementioned categories was established by using the structural equation model (SEM). Through the path analysis results among latent variables and manifested variables, it was found that Exp has an impact on Vio and LaS, and better SAA can inhibit Vio and Mis. In conclusion, the prime aim of improving road traffic safety is to reduce Vio by means of educating and improving the drivers’ Exp and SAA. Moreover, drivers’ LaS and Mis are transition processes which should be corrected timely and prevented from continuing to evolve into Vio.
Perspectivas do panorama epidemiológico do câncer de boca no Brasil
Authors: Santos José Ismair de Oliveira dos , Ferreira Júlia Silva , Munhoz Isabela Gomes Alves , Lemos Dayane Lima Pereira de , Tenório Danielle de Paula Queiroz , Almeida Luis Otávio Rodas Ferreira de , Fernandes Marinília Cristina Barbosa , Vieira Lays Lorene Matos , Melo Maria Eduarda de Freitas , Almeida Mariana Silva Gois de , Panjwani Camila Maria Beder Ribeiro Girish
Published: January 2021

Introdução: O câncer de boca acomete principalmente as vias aerodigestivas, a língua, o assoalho da boca e lábio inferior. Nota-se aumento considerável desse agravo, tornando-o fator importante na saúde pública. Diante do exposto, qual seria o atual panorama epidemiológico do câncer de boca no Brasil? Objetivo: Apresentar as perspectivas do panorama epidemiológico do câncer de boca no Brasil. Método: Estudo transversal descritivo e retrospectivo, de abordagem quantitativa, cujos dados foram coletados ao Departamento de Informática do Sistema Único de Saúde (DATASUS) e analisados sob auxílio de artigos publicados nas bases Pubmed, Scielo e publicações do INCA. Resultados: Foram notificados 264.829 casos, sendo 72,08% do gênero masculino, com predileção pela faixa-etária de “50 a 59 anos” (28.99%) e cor/raça branca (43,09%). No tocante aos óbitos, observou-se 30.563 casos (11,54%), com 77.75% do gênero masculino, sendo 57,07% da faixa-etária de 50-59 anos e na cor/raça caucasiana (41,00%). O câncer de boca possui alta incidência na população brasileira, sendo de etiologia multifatorial. Em relação ao sexo, isso é atribuído a maior exposição aos fatores de risco detectáveis. O investimento em prevenção, sobretudo na redução do consumo do álcool, tabaco e na mitigação da transmissão do Papiloma Vírus Humano (HPV) por via oral, relaciona-se diretamente com o combate a essa neoplasia. Conclusão: Observa-se que as perspectivas são consideradas promissoras, à medida que são criadas novas condições de combate ao agravo de saúde estudado e partir das ações de políticas públicas que se desenvolvem no país.
Prevalência da esclerodermia localizada em um serviço de referência em dermatologia do Estado do Ceará
Authors: Vale Thais Campelo Bedê , Barros Levi Coelho Maia , Lima Matheus Eugênio de Sousa , Maia Mariana Rocha , Aires Maria Araci Pontes
Published: January 2021

Introdução: A esclerodermia abrange amplo espectro de manifestações clínicas, sendo subdividida em forma localizada e sistêmica. A forma localizada, com acometimento exclusivamente cutâneo e de tecidos circunvizinhos, apresenta fisiopatologia e epidemiologia parcialmente conhecidas pela comunidade científica, com a maioria dos estudos epidemiológicos se concentrando na forma generalizada e extrapolando seus resultados para a outra forma. Este estudo tem o intuito de esclarecer a epidemiologia da esclerodermia localizada no estado do Ceará, visando compreender seus fatores de risco na população brasileira. Trata-se do primeiro estudo epidemiológico brasileiro acerca da esclerodermia localizada. Metodologia: Delineou-se um estudo retrospectivo quantitativo, no qual foram analisados todos os registros das consultas médicas realizadas no Centro de Referência em Dermatologia Dona Libânia (CDERM), Fortaleza, Ceará, em 2015, através das variáveis: nome, sexo, idade, data da consulta, número do prontuário, diagnóstico presuntivo ou confirmado e a frequência do paciente no CDERM. Resultados: Dos 19.576 pacientes analisados, 124 pacientes foram diagnosticados com esclerodermia localizada, representando uma incidência aproximada de 0,62% no serviço. Dentre estes pacientes, 96 (77,42%) eram do sexo feminino e 28 (22,58%) do sexo masculino. A idade média dos pacientes foi de 29,7 anos. Discussão: A prevalência e distribuição por sexo obedeceram às tendências mundiais relatadas em outros trabalhos. Entretanto, constatou-se elevada prevalência de diagnóstico no sexo feminino na faixa etária pediátrica, o que contrasta com dados na literatura que afirmam que as diferenças na distribuição de gênero começam a existir no início da adolescência. Esta diferença pode dever-se a fatores culturais, subdiagnóstico na população masculina ou uma tendência regional na epidemiologia da esclerodermia localizada. Conclusão: Este estudo corresponde ao primeiro estudo epidemiológico brasileiro acerca da esclerodermia localizada, sendo necessários estudos mais amplos e multicêntricos que permitam entender melhor a doença na nossa população e, assim, possam servir de base para futuras ações assistenciais.
Gestão participativa da arborização urbana de municípios paulistas: implicações, desafios e propostas
Authors: Julião Danielle
Published: January 2021

O Programa Município VerdeAzul (MVA) interfere diretamente nos processos políticos e de gestão ambiental nos municípios do Estado de São Paulo, impulsionando avanços e/ou retrocessos em função de suas diretrizes. Neste artigo, busca-se saber em que medida o estímulo à incorporação do “princípio da gestão participativa” se materializa nos territórios e impulsiona a participação social efetiva nos processos de tomada de decisão, aprimorando os mecanismos de condução da gestão da arborização urbana. Esse artigo baseia-se em análise documental e no processo de observação participante no MVA Ciclo 2017.
La gestion des eaux pluviales en ville: regard croisés sur Paris et Rio de Janeiro
Authors: Britto Ana Lucia , Barraqué Bernard
Published: January 2021

Les eaux pluviales urbaines font partie des éléments naturels qui peuvent représenter à la fois une ressource et une menace pour la vie urbaine. Dans les métropoles françaises et brésiliennes, ce thème est désormais au cœur de la planification urbaine et des projets urbains. En partant de l’approche de la gestion durable des eaux en ville qui intégre urbanisme et cicle urbain de l’eau, on cherche à indiquer les potentialités et les limites des instruments de planification concernant la gestion des eaux pluviales urbaines à travers des regards croisés entre Paris et Rio de Janeiro.
A multifuncionalidade da agricultura intra e periurbana valorisada em Dakar: uma abordagem dialética multi-atores e multi-escala
Authors: Soce Ndiogosse
Published: January 2021

A agricultura intra e periurbana ocupa um lugar cada vez mais importante para as cidades, especialmente as do Sul, que incluem Dakar. A multifuncionalidade é um conceito interessante para definir o valor atribuído a esta agricultura pelos atores urbanos que definem a cidade. Assim, propomos uma abordagem multi-escala e multi-atores para a multifuncionalidade que leva em consideração percepções, expectativas e práticas para melhor definir a importância dada à agricultura intra e periurbana para uma cidade como Dakar. Trata-se de refletir sobre os pontos de convergência e divergência entre os atores para detectar as inconsistências e os pontos que bloqueiam a manutenção da agricultura na cidade.
Immediacy in Aristotle’s Epistemology
Authors: Zuppolini Breno
Published: January 2021

This article discusses immediate premises in Aristotle’s epistemology. The traditional interpretation identifies immediacy with indemonstrability: immediate truths are the indemonstrable principles of science from which the theorems are derived by demonstration. Against this common reading, I argue that Aristotle’s recognition of two kinds of epistemic priority (priority by nature and priority to us) commits him to the existence of two types of immediacy, only one of which is equivalent to indemonstrability. As a result, my interpretation offers a better understanding of a puzzling passage (APo. 1.13, 78a22–b4) that seems to contradict the standard view.
Negotiation Inaction Inertia: A Dynamic Model of the Impact of Missed Opportunities on Negotiation Decisions in Multi-issue Disputes
Authors: Terris Lesley G. , Lishner-Levy Noya , Tykocinski Orit E.
Published: January 2021

Negotiations aimed at resolving international disputes often end in deadlock. In the current article, we focus on deadlocks triggered by missed opportunities. The consequences of missing an advantageous opportunity have been studied extensively in the field of psychology within the context of the inaction inertia effect. The concept was recently introduced into the negotiation literature. Forgoing an attractive action opportunity creates vulnerability to regret and increases the likelihood of forgoing subsequent inferior opportunities, even if they still have positive value. The current article deepens the applicability of inaction inertia to international negotiations, by adopting a new multi-step multi-issue paradigm, which better approximates real-life negotiations. Using the new platform, we demonstrate the inaction inertia effect in a dynamic negotiation setting and link an individual’s inertia mindset to the experience of regret. The methodology and analysis presented will help researchers and practitioners explain inertia-induced deadlocks, and facilitate interventions that expedite successful resolutions.
Theory of Mind Increases Aesthetic Appreciation in Visual Arts
Authors: Iosifyan Marina
Published: January 2021

Theory of mind is a cognitive ability that enables us to understand mental states of others, important in real-life communications as well as in aesthetic cognition. The present research investigated whether understanding intentions and emotions is related to aesthetic appreciation. Study 1 tested whether there is a link between aesthetic appreciation of cinematic films and attempts to understand the intentions and emotions of the artists and the film characters. It showed that a self-reported understanding of emotions and intentions is positively associated with aesthetic appreciation. Studies 2 and 4 investigated a causal relationship between the attempt to understand emotions and an aesthetic appreciation of artistic photos. Study 3 investigated an actual understanding of emotions and aesthetic appreciation of movie shots. The results show that when people evaluate the emotional state of the characters, they aesthetically appreciate artistic photos more, compared to when they evaluate non-mental characteristics of these photos (age of the characters, the colour of the photos). Moreover, better understanding of another’s emotions is related to greater aesthetic appreciation.
Exploring plant species richness along the Tiber River within the city of Rome
Authors: CESCHIN SIMONA , SALERNO GIOVANNI
Published: January 2021

The Tiber River stretch crossing the metropolitan area of Rome (Italy) is regarded as one of the main biological corridors of the city, as it diversifies the urban landscape while contributing to the plant diversity. This paper aims to document the current plant richness occurring along the Tiber within the city by providing a comprehensive inventory of the spontaneous vascular flora and an overview of its composition, and structural, chorological and ecological features. This flora lists 493 species and it is characterized by: i) high species richness (more than 30% of Rome’s flora), ii) presence of species with naturalistic value, as rare or included in Red List IUCN categories, iii) high number of ruderal and multizonal species (including several aliens) that have well adapted to human disturbance, and have partially replaced the typical riverine plants, iv) wide spread of eutrophic aquatic species, and rarefaction of those species that are more sensitive to eutrophication and water pollution. The dataset and the overview reported in this study can be useful for future research, with a special focus on a better naturalistic management of the urban river ecosystem, and the conservation of the floristic heritage within the city of Rome.
Temporary Refugee and Migration Visas in Australia: An Occupational Health and Safety Hazard
Authors: Ziersch Anna , Walsh Moira , Due Clemence , Reilly Alex
Published: January 2021

Employment and work-related exploitation and discrimination are important social determinants of health. However, little is known about the experiences of people on temporary visas in Australia, particularly those on refugee visas. This article reports on a study of people living on temporary visas in South Australia and their experiences of workforce exploitation and discrimination and impacts on health. Interviews were conducted with 30 people: 11 on non-refugee temporary visas and 19 on refugee temporary visas. Data was analyzed thematically. Analysis identified experiences of exploitation and discrimination in the Australian labor market that included difficulties securing work, underpayment, overwork, and hazardous workplaces. These experiences had negative health effects, particularly on mental health. None had made a formal complaint about their treatment, citing the precarity of their visas, difficulties finding an alternative job, and lack of knowledge about what to do. The impacts were especially evident for refugees who were also grappling with pre-settlement trauma and ongoing uncertainties about their future protection. Overall, these findings of discrimination and exploitation in the workplace and subsequent ill health highlight the pervasive impact of neoliberal agendas and stress the need for industrial, immigration, and welfare reform to protect workers on temporary visas.
Exfoliated two-dimensional molybdenum disulfide reinforced epoxy syntactic foams
Authors: Ullas AV , Kumar D , Roy PK
Published: January 2021

In this paper, we report the effect of introducing molybdenum disulfide (MoS2) nano-platelets: a two-dimensional metal chalcogenide, on the mechanical properties of hollow glass microballoon (HGM)–epoxy syntactic foams. MoS2 reinforced syntactic foams were prepared by mixing MoS2 nanoplatelets to epoxy containing HGMs; with the amount of MoS2 being varied from 0.01 to 0.04% v/v, while maintaining a constant total filler volume fraction of 40% for all compositions. The mechanical behaviour of reinforced syntactic foam was studied under varied loadings including compressive, tensile and flexural under different strain rate regimes. Introduction of MoS2 led to significant improvements in characteristic mechanical properties, particularly in terms of compressive strength and toughness, which suggest intercalation of MoS2 within the epoxy matrix; however, the presence of relatively larger MoS2 micro particles couldn’t be completely negated. The toughness of the foam, as indicated by the area under the compressive stress-strain curve, was found to increase by ∼21% under optimal conditions. Our results highlight the potential of the two-dimensional MoS2 sheets as a reinforcing agent in syntactic foams.
Treatment of anterior column posterior hemitransverse fracture with supra-ilioinguinal approach
Authors: Wan Yizhou , Yao Sheng , Chen Kaifang , Zeng Lian , Zhu FengZhao , Sun TingFang , Guo XiaoDong
Published: January 2021

Objective

To report the feasibility and effect of the supra-ilioinguinal approach for treatment of anterior posterior hemitransverse fracture of the acetabulum.

Methods

Nineteen consecutive patients who underwent treatment for an anterior column posterior hemitransverse fracture of the acetabulum from January 2013 to June 2018 were retrospectively analyzed. All patients underwent treatment by the single supra-ilioinguinal approach with at least 1 year of follow-up.

Results

The mean time to surgery, operative time, incision length, and blood loss were 10.2 ± 3.8 days, 157 ± 125 minutes, 10.2 ± 0.6 cm, and 876 ± 234 mL, respectively. According to the Matta scoring system, the reduction quality was excellent in 13 patients, good in 6, and poor in 0. According to the Merle d'Aubigné scoring system, the outcome at the last follow-up was excellent in 12 patients, good in 5, fair in 1, and poor in 1. Postoperative complications occurred in three patients (deep vein thrombosis in one, lateral femoral cutaneous nerve injury in one, and both complications in one).

Conclusions

Use of the supra-ilioinguinal approach for treatment of anterior column posterior hemitransverse fracture of the acetabulum produced excellent clinical results because of the direct visualization of the anterior column and quadrilateral plate.
Nonlinear magnetoelastic deformations of porous solids
Authors: Zheng Pei , Tang Xiong , Ding Ding
Published: January 2021

A magnetoactive porous solid comprises a porous polymer matrix with embedded magnetizable particles. The connected porous space of the polymer matrix is filled with a fluid. Under externally applied magnetic fields, the magnetoactive porous solid can undergo large deformations in the elastic regime, triggering diffusive flow in the interconnected pores. The coupled hydromagnetomechanical behavior of such materials has recently received considerable attention. In this paper, the effective stress principle is applied to the constitutive modeling of the material at finite strains. In contrast to previous works, the Lagrangian porosity is no longer treated as an independent constitutive variable in the proposed formulation. To investigate the effect of the magnetic field on the mechanical response of the material, as well as to illustrate the theory, the problem of inflation of a circular cylindrical tube in the presence of a uniform axial magnetic field is formulated and solved. Computational results are presented graphically.
Analyzing the effect of moxibustion treatment using the maximum instantaneous frequency of photoplethysmogram signals based on Hilbert–Huang transforms
Authors: Xiao Ming-Xia , Lu Chang-Hua , Ta Na , Wei Hai-Cheng , Tang Xiao-Jing
Published: January 2021

Moxibustion is a treatment in traditional Chinese medicine that can promote human health. In order to study the effect of moxibustion on cardiovascular function, photoplethysmogram signals were obtained from acupoints at st 36 (zusanli), sp 6 (sanyinjiao), and li 11 (quchi) during moxibustion. The test data were collected from six volunteers of average weight for 6 days of treatment. The effect of moxibustion treatment was determined by comparing amplitude–frequency characteristics of the instantaneous frequency in the power spectrum after Hilbert–Huang transformation of the pulse signal before and after treatment. It was found that after moxibustion, the maximum energy frequency of the photoplethysmogram would increase, but the amplitude would decrease. The results show that moxibustion therapy has the dual benefit of the infrared effect and acupoint stimulation, which can improve cardiovascular health and has a positive effect on metabolism.
A Generalized Model of Advertised Sales
Authors: Shelegia Sandro , Wilson Chris M.
Published: January 2021

To better understand temporary price reductions or “sales,” this paper presents a generalized “clearinghouse” framework of advertised sales and explores some applications. By viewing the firms as competing in utility and amending the conventional tiebreak rule, we allow for multiple dimensions of firm heterogeneity in complex market environments. Moreover, we (i) provide original insights into the number and types of firms that use sales, (ii) offer new results on how firm heterogeneity affects market outcomes, (iii) extend a common empirical “cleaning” procedure, and (iv) analyze a family of activities in sales markets, including persuasive advertising and obfuscation. (JEL D21, D43, L13, L25, M37)
Η έννοια του Θεού: εννοιολογική αλλαγή και νοητικά μοντέλα παιδιών και εφήβων
Authors: Πνευματικός Δημήτρης , Μακρής Νίκος
Published: January 2021

Prior research revealed qualitative differences between children’s representations and the theologically accepted beliefs for God. In the present study, it was hypothesized that children and adolescents’ weakness to represent the concept of GOD in the theologically accepted way, derives from constraints that are posed by the ontologicalpresuppositions of their initial knowledge upon which they construct the concept of GOD. One hundred and twenty children of four age groups 8-, 10-, 12- and 14-year-olds participated in the study. The results showed that children’s conceptualization of God is constrained by the ontological presuppositions of the living beings in which children, initially, categorize the concept of GOD. Moreover, the results showed that the acquisition of the theologically accepted knowledge for God is a cumbersome procedure and only few of the adolescents acquire a concept of transcendental God. Children and adolescents, in their effort to integrate the information for a transcendental God to their prior knowledge structures, construct synthetic mental models such the God as a superman, as a soul or as a spirit.
Η σεξουαλική εκπαίδευση και τα ψυχοσεξουαλικά προβλήματα ατόμων με νοητική υστέρηση
Authors: Σιαπέρας Παναγιώτης , Σούλης Σπυρίδων - Γεώργιος
Published: January 2021

Today even after the general progress based on Normalisation (Nirje, 1972), on services and policy for people with intellectual disabilities there is lack of knowledge and programmes on psychosexual issues they face. This paper tries to summarise and discuss the need for ordinary sexual life for people with intellectual disabilities. It presents the importance of programmes in sex education and contraception and how they should be introduced by the services. Furthermore it shows possible aetiology and impact of sexual abuse for the victim with intellectual disabilities and his/her family. Also it is presented how services should react and what kind of programmes should be introduced in cases of people with intellectual disabilities who either are victims of sexual abuse or commit sexual offence.
Διερευνώντας τις σχέσεις ανάμεσα στη Θεωρία του Νου και στις Επιστημικές Πεποιθήσεις
Authors: Κυριακοπούλου Νατάσσα , Βοσνιάδου Στέλλα
Published: January 2021

The present research investigated a) beliefs about the mind of others elementary school children’s (Theory of Mind), b) their epistemic beliefs about the nature of knowledge and knowing (Personal Epistemology), and c) the relationship between these two domains, in order to examine the hypothesis that Theory of Mind is a first step towards the development of a Personal Epistemology. Forty-six fifth graders were administered measures of their ability to attribute false beliefs to others and of their epistemic stance. The results showed statistically significantcorrelations between children’s ability to understand the beliefs of others and their epistemic beliefs. Furthermore, students performed better on Theory of Mind measures in relation to epistemic measures indicating that children more readily understand the constructivist nature of knowledge in the domain of Theory of Mind. The regression analyses carried out showed that Theory of Mind highly contributes to children’s epistemic stance.
Η διά του λόγου κατασκευή της ταυτότητας των ανύπανδρων γυναικών
Authors: Κοτρώνη Ευδοξία , Αθα Χριστίνα
Published: January 2021

Understanding the experience of women who are not married and live alone has recently become an important issue within feminist psychology, since a significant and growing number of women belong to this category. The aim of the study is to examine the discursive construction of unmarried women’s identity. The methodology followed a poststructuralist approach in discourse analysis and data were collected through semi-structured individual interviews with unmarried women, aged between 36 and 52 years. The analysis highlighted the three maindiscourses the participants used in their accounts: (a) the discourse of independence, (b) the discourse of loneliness, and (c) the discourse of stigmatization. The paper discusses the consequences these discourseshave on the construction of the women’s personal identity, on the reproduction of the dominant ideology regarding unmarried women in Greece, as well as on women’s counseling.
Γονικότητα και διδυμία: Μία διπλή πρόκληση
Authors: Μαρκοδημητράκη Μαρία
Published: January 2021

Ιn the present paper the transition to parenthood of twins and the developmental process of the relationship between parents and their twins from the prenatal period up to adolescence are described and discussed. Our interest is focused on the distinctiveness of this relationship and the issues arising in every developmental step of twins. It is a double challenge for parents. On the one hand they should respond effectively to their role as parents and on the other hand they should simultaneously face the needs of two different children, with all the difficulties involved. In the present work the significance of the twins’ differentiation by their parents while they are still in the prenatal period, is emphasized as it is an important issue for the prevention of comparison, tension or jealousy that are harmful to the twin bond. The realisation that every twin child is different brings out the developmental advantages of twinship (companionship, empathy, cooperation etc) and diminishes the stereotypical view summarized in the phrase “for problem see twin”, which is being questioned by contemporarynaturalistic studies on the subject. Identifying the developmental advantages of twinship is a critical factor for the growth of emotionally healthy twins who respect and appreciate themselves and their relationship.
Πολιτικός προσανατολισμός, πολιτική σκέψη και κοινωνικο-ηθική κρίση: Βίοι παράλληλοι;
Authors: Φωτακοπούλου Όλγα , Μαρκουλής Διομήδης
Published: January 2021

The article reviews the main research evidence pertaining to the relationship between political ideology and socio-moral reasoning, as it is explicated in L. Kohlberg’s developmental model. A repeated finding of the relevant literature, both previous and more recent, indicates that the qualitative from stage to stage transformations of the sociomoralreasoning structures, constitutes one of the determining factors for the formation of political beliefs or political ideology. As far as the direction of such an impact is concerned, the available evidence shows that conventional sociomoral reasoning tends to be associated with more conservative or right-wing political orientation, whereas postconventional thinking is more often connected to more liberal or left-wing political ideology. The explanation of this association pattern still remains a matter of controversy. The article also reports findings from a study which examined the possible impact of sociomoral reasoning on the developmentally differentiated ways children and adolescents understand a number of key political concepts. The findings of the study indicated points of convergence between the developmental pattern of political thinking and socio-moral reasoning that concerned the conceptualization of government and law in the ages of 12-15 and the concept of political authority in the ages of 15-18 years. The findings did not support any association in primary school students.
Σχέση μεταξύ κινήτρων και σταδίων αλλαγής της συμπεριφοράς προς την άσκηση Ελλήνων μαθητών
Authors: Κοντογιάννη Πολίνα , Κοντογιάννη Νέλλη , Τσαμίτα Ιωάννα
Published: January 2021

ABSTRACT IS AVAILABLE IN THE PDF
Το αυτιστικό φάσμα υπό το πρίσμα της γνωστικής ψυχολογίας: Επισκόπηση της σύγχρονης βιβλιογραφίας
Authors: Σακουλογέωργα - Κωστάκη Δέσποινα
Published: January 2021

ABSTRACT IS AVAILABLE IN THE PDF
Διαταραχές συμπεριφοράς και συναισθήματος και κοινωνική στήριξη εφήβων με σοβαρά προβλήματα όρασης
Authors: Αθανασόπουλος Βασίλειος
Published: January 2021

ABSTRACT IS AVAILABLE IN THE PDF
The role of language in constituting and expressing personal academic understanding
Authors: Svensson Lennart
Published: January 2021

The use of language is central to the constituting and expressing of academic understanding. The theme of this article is set against the background of previous and ongoing phenomenographic research, with a theoretical approach presented as an alternative to main cognitive and socio-cultural approaches. One main characteristic of this researchis a focus on the relation between the learner as an agent and the external situation the learner relates to, especially the subject matter, and the knowledge involved in this relation. It is suggested that to fullyunderstand the constituting and expressing of academic understanding one has to consider the immediate personal and situational context, and to see the learner as an agent mediating the relation to, and thesignificance of, broader cognitive and socio-cultural contexts. This means considering the personal context in a more complete way than is done in either cognitive or socio-cultural orientations. Three cases, selected from previous interview research, are presented to demonstrate the importance of the agency of the learners, using a contextual phenomenographic approach which proved useful in discerning and clarifying the personal, situational, cognitive and socio-cultural contexts within which academic understanding develops.
Research into student understanding within university courses: A commentary on the last three papers
Authors: Lindblom - Ylanne Sari
Published: January 2021

This commentary looks at the last three articles on the special issue, those by Velda McCune, Evangelia Karagiannopoulou and SueHallam and Hazel Francis. The first two papers focus on exploring students’ understanding. Velda McCune explores learner identities and the will to understand of undergraduate bioscience students. Evagelia Karagiannopoulou analyses the effect of in-class experiences and the nature of examinations on understanding of final-year psychology students. The third paper by Sue Hallam and Hazel Francis deals indirectly with understanding and focuses on analysing students’ conceptions of the nature of argument. Skills of argumentation are a crucial part of critical thinking skills which, in turn, have been shown to be related to the deep approach to learning.
Πολιτισμοί και οικογένειες: μια ψυχολογική μελέτη σε 30 χώρες
Authors: Γεωργάς Δημήτριος , W. BERRY JOHN , VAN DE VIJVER FONS J. R. , KAGITCIBASI CIGDEM , POORTINGA YPE H.
Published: January 2021

The abstract is available in the PDF
Θυματοποίηση στο σχολείο: ψυχοκοινωνικές συνέπειες στους μαθητές
Authors: Κυριακίδης Σταύρος
Published: January 2021

The abstract is available in the PDF
Μεταγνώση και αναγνωριστική κατανόηση: σύγχρονες τάσεις στη θεωρεία, στην έρευνα και στην πράξη
Authors: Κουτσουράκη Στέλα
Published: January 2021

Abstract is available in the PDF
Μορφολογικές παρεμβάσεις σε μαθητές με δυσκολίες στην κατάκτηση της ορθογραφικής ικανότητας: μελέτες περίπτωσης στα αγγλικά και ελληνικά
Authors: Ν. Τσεσμελή Στυλιανή
Published: January 2021

Abstract is available in the PDF
Αντίληψη των ελληνικών φωνηέντων από παιδιά με και χωρίς διαταραχή ελλειμματικής προσοχής/ υπερκινητικότητα
Authors: Οκαλίδου Αρετή , Βούλτσιος Ηλίας , Fourakis Marios , Γουδήρας Δημήτριος
Published: January 2021

The abstract is available in the PDF
Μητέρες παιδιών με χαμηλή σχολική επίδοση: η αντίληψή τους για το ρόλο τους στη σχολική επιτυχία των παιδιών τους και η προθυμία αναζήτησης ψυχοπαιδαγωγικής στήριξης
Authors: Κουϊμτζή Ελένη-Μαρία , Στογιαννίδου Αριάδνη
Published: January 2021

The abstract is available in the PDF
Gender features of sensorimotor function in young people with motor asymmetry
Authors: Romanchuk Alexander P , Guziy Oksana V , Glushchenko Marina N
Published: January 2021

We have examined 745 healthy young adults aged 21,4±2,6 (including 493 men and 252-women) by using the appliance «Computer movements measurer». Having investigated the sexual features of sensor-motor function taking into account the motor asymmetry we have found that the most likely (p<0,05) differences between the central (switch of central units), subcortical (movement cycle durability) and medullary (reaction time to light) mechanisms of movements appear in left-handed women. The significant results show that there is the polynomial relationship between the left and right hand accuracy measures by taking into account the motor asymmetry in both men and women.
The role of the level of biochemical markers of inflammation and protective systems of the organism in blood serum and in seminal fluid in patients with chronic prostatitis
Authors: Shuhtin V. V. , Sknar V. N. , Shuhtina I. N. , Zukow W.
Published: January 2021

Chronic prostatitis is one of the most common urological diseases. The most socially active groups of the population suffer the most from chronic prostatitis. Most complications of this disease lead to the most undesirable consequences: a decrease in potency, a pain syndrome that complicates the daily activities of patients, dysuria and the possibility of exacerbation of the inflammatory process, which manifests itself in a sharp increase in the exudative reaction, even before the abscess. The article discusses the results of observations of patients with chronic prostatitis in healthy men aged 20-45 years without somatic diseases. Studies were conducted to determine the role of the level of biochemical markers of inflammation of the body's defense systems in blood serum and in semen in patients with chronic prostatitis.