bluuebunny/crossref_metadata_2025 huggingface dataset:
Reviewing Risk Process Integration Effectiveness into Malaysia’s Landscape Architecture Project Lifecycle
Authors: S.Muthuveeran Adam Aruldewan , Mohd Tahir Osman , Ibrahim Roziya , Abd-Karim Saipol Bari
Published: March 2020

This paper explores the effectiveness of risk process integration into landscape architecture project lifecycles, a subject that found to be lacking in risk management studies. The fieldwork of data collection conducted through structured interviews as well as document reviews from three completed landscape architecture projects in Klang Valley, Malaysia. The collected data analysed using content and thematic analysis. The research found that the risk process ineffectively integrated into project lifecycle with results presenting incomplete process, unplanned and redundant activity flows. The study suggests that common practice constrains practical risk management application that then restrains its benefit realisation.Keywords: risk management; risk process; project lifecycle; landscape architecture projecteISSN: 2398-4287 © 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v5i13.1991
Urban Agriculture as a Community Resilience Strategy against Urban Food Insecurity
Authors: Mohd Salleh Anizah , Harun Nor Zalina , Abdul Halim Sharina
Published: March 2020

Urban agriculture is an initiative in overcoming the impact of food insecurity. This study identifies the elements of food security and explores the strategy for community resilience from urban agriculture perspectives among the vulnerable urban group. This study employs a systematic literature review by three phases of identification, screening, and eligibility. A total of 15 articles are compiled and analyzed using thematic analysis. Four main themes emerged consist of food security, food production, food flow, and resilience strategy. The four themes produced a total of 14 sub-themes in detailing the element of food security and development strategy of urban agriculture programs for community resilience.Keywords: urban agriculture; community resilience; food security; resilience strategyeISSN: 2398-4287 © 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v5i13.2047
Integrating the Typographic Landscape in Creating Interactive Spaces for a Holistic Learning Environment
Authors: Abdul Kadir Norita , Abdul Rahman Norhafizah , Ibrahim Nur Hisham
Published: March 2020

This paper aims to identify the importance of the ideas on integrating Typographic Landscape in a campus environment. In creating interactive spaces that can create a holistic learning environment, an artistic approach has been developed. The design proposed is an installation of functional three-dimensional gigantic letters that will become a bench for students’ informal outdoor activities as part of sustainable initiatives that will beneficial to students in order to give adequate space for a learning environment. A quantitative method using questionnaires survey has been distributed to 160 students. The results of this study will provide a better understanding of the relationships between students' preference and landscape features and aim to enhance the quality of life in a campus environment.Keywords: Typographic landscape; learning environment; campus environment; interactive spaceeISSN: 2398-4287 © 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v5i13.2107
Фазовые превращения в сплавах Fe-=SUB=-100-x-=/SUB=-Si-=SUB=-x-=/SUB=-: исследования ab initio
Authors: Загребин М.А. , Матюнина М.В. , Кошкин А.Б. , Бучельников В.Д. , Соколовский В.В.
Published: March 2020

In present work, on the basis of structural and magnetic phase transition temperatures estimated theoretically from the first principles, the concentration phase diagram for Fe100-xSix (9.375 ≤ x ≤ 25.0 at.%) was plotted. Structural phase transition temperatures for the experimentally observed crystal structures were obtained from the structural optimization. The Curie temperatures were estimated from mean field approximation using ab initio calculated exchange coupling constants. Both structural and magnetic phase transitions temperatures are found in qualitative agreement with the experiment. For the whole considered concentration range, structural transitions from the ordered cubic to fully disordered through partially disordered one are appeared with temperature increasing. As for magnetic transformations, ferromagnetic-paramagnetic transition is observed for all compositions, however, it happens in different crystal phases.
Описание колоссального магнитосопротивления La-=SUB=-1.2-=/SUB=-Sr-=SUB=-1.8-=/SUB=-Mn-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=- на основе "спин-поляронного" и "ориентационного" механизмов проводимости в парамагнитной области температур
Authors: Гудин С.А. , Солин Н.И.
Published: March 2020

Experimental and theoretical investigations of the resistance of the La1.2Sr1.8Mn2O7 single crystal in magnetic fields from 0 to 90 kOe and in the temperature range from 75 to 300 K has been studied. The magnetoresistance is determined by the “spin-polaron” and “orientation” conduction mechanisms. Using the method of separating contributions to the magnetoresistance from several conduction mechanisms, the observed magnetoresistance of La1.2Sr1.8Mn2O7 manganite in the temperature range of 75-300 K is described, good agreement between the calculated and experimental data is obtained. In a magnetic field of 0 and 90 kOe, the temperature dependences of the size of the spin polaron (in relative units) are calculated for the temperature range 75–300 K. It is shown, that the КМС value is determined by an increase in the linear size of the spin polaron (along the magnetic field), i.e. the main role in the magnitude of the colossal magnetoresistance is made by the change in the size of the magnetic inhomogeneities of the crystal.
Отрицательный сдвиг Гуса-Хенхена на границе многоподрешеточного антиферродиэлектрика
Authors: Пойманов В.Д. , Шавров В.Г.
Published: March 2020

Abstract The interaction of an electromagnetic radiation with electric dipole active spin modes in a multisublattice antiferrodielectric is shown to possibly lead to anomalous (negative) spatial shift of a light beam when an electromagnetic wave is incident on the interface with an isotropic dielectric medium.
Теоретический подход к исследованию магнитных и магнитокалорических свойств сплавов Гейслера Ni-Mn-Ga
Authors: Мирошкина О.Н. , Соколовский В.В. , Загребин М.А. , Таскаев С.В. , Бучельников В.Д.
Published: March 2020

The study of the magnetic and magnetocaloric properties of Ni2+xMn1-xGa (x = 0.16, 0.18 and 0.3) Heusler alloys are presented. The research was performed using a model based on the Malygin theory of smeared phase transitions, Bean–Rodbell theory of first-order phase transitions, and mean-field theory. The temperature dependences of deformation, magnetization, and isothermal entropy change are studied. It is shown that the largest change in magnetic entropy is observed in the Ni2.18Mn0.82Ga alloy, in which the martensitic transition is accompanied by a change in magnetic ordering. The smallest change in entropy is demonstrated by the Ni2.3Mn0.7Ga alloy, in which magnetocaloric the effect is observed in the martensitic phase upon a change in magnetic ordering. However, the refrigeration capacity of this alloy is twice as much as for the other considered compositions.
Фазовые переходы в низкоразмерных неупорядоченных моделях Поттса
Authors: Бабаев А.Б. , Муртазаев А.К.
Published: March 2020

Abstract The Monte Carlo method is used to study phase transitions in disordered two-dimensional Potts models in which disorder is realized as nonmagnetic impurities. The temperature dependences of the thermodynamic parameters have been calculated for specific heat C , susceptibility χ, and fourth-order Binder cumulants in the dependence on spin concentration p . The calculations have been performed for the system with periodic boundary conditions. The systems with linear sizes L × L = N , L = 20–160 are considered. The incorporation of nonmagnetic impurities to a spin system is shown to possibly lead to a change of the first-order phase transition to a second-order phase transition. The problem of the universality classes of the critical behavior of low-dimensional diluted systems is discussed.
Сегнетоэлектрические фазовые переходы в Sr-=SUB=-9-=/SUB=-Tm(VO_4)-=SUB=-7-=/SUB=- при замещении стронция на кальций и свинец
Authors: Барышникова О.В. , Дейнеко Д.В. , Потаенко М.А. , Дихтяр Ю.Ю. , Стефанович С.Ю. , Морозов В.А. , Лазоряк Б.И.
Published: March 2020

By solid-phase synthesis at 1373 K in Sr9-xMexTm (VO4)7 systems the solid solutions with Me = Ca (0≤ x≤2) and Me = Pb (0≤ x≤1) were obtained. Single-phase samples at room temperature are isostructural to the Ca3(VO4)2 ferroelectric (space group (sp.gr.) R3c, Z = 6). Substances are characterized by X-ray phase analysis (XRD), second optical harmonic generation (SHG), and dielectric spectroscopy. The intensity of the SHG signal change depending on the substitution cation and its concentration varies in the range of 30-50 units relative to the quartz standard. A reversible ferroelectric phase transition was found in the temperature range 850–960 K. The transition is accompanied by a sharp maximum in the temperature dependence of the dielectric constant. The absence of a SHG signal above the transition temperature indicates the centrosymmetry of the paraelectric phase.
Исследование особенностей состава, магнитной и кристаллической структуры гексаферрита бария BaFe-=SUB=-12-x-=/SUB=-Ti-=SUB=-x-=/SUB=-O-=SUB=-19-=/SUB=-
Authors: Коровушкин В.В. , Труханов А.В. , Костишин В.Г. , Исаев И.М. , Щетинин И.В. , Дуров Н.М. , Миронович А.Ю. , Минкова И.О. , Астапович К.А.
Published: March 2020

The results of studies of the composition, crystal, and magnetic structure of Ti-substituted barium hexaferrite BaFe12 - xTixO19 (0.25<x<1.5) by Mössbauer spectroscopy, vibration magnetometry, X-ray diffraction, and synchronous thermal analysis are presented. Partial substitution of Fe3 + ions by Ti4 + ions revealed the presence of a limited heterovalent isomorphism realized according to the 2Fe3+ = Ti4+ + Fe2+ while maintaining charge balance. Using Mössbauer spectroscopy, an increase in the electron density of 3d electrons and the presence of Fe2+ in BaFe12 - xTixO19 samples with x = 1.5 were established. The limit of heterovalent isomorphic substitution is established, which is in the range 0.75 <x <1.0. Using Mössbauer spectroscopy and X-ray diffraction, the formation of titanium-containing phases at x = 1, 0, the content of which increases with increasing degree of substitution, is shown. Information is provided on the predominant distribution of substituent ions (Ti4+) in the structure of barium hexaferrite at positions 12k and 2b.
Температурный сдвиг бесфононных f-f-линий люминесценции Er-=SUP=-3+-=/SUP=- в квантовом параэлектрике KTaO-=SUB=-3-=/SUB=-
Authors: Трепаков В.А. , Скворцов А.П. , Potuvcek Z. , Jastrabik L. , Dejneka A.
Published: March 2020

Abstract In KTaO_3:Er crystals, we observed a temperature shift, unusual for rare earth impurities, for narrow zero-phonon luminescence lines, due to the ^4 S _3/2 → ^4 I _13/2, ^4 F _9/2 → ^4 I _15/2, and ^4 S _3/2 → ^4 I _15/2 transitions in Er^3+ impurity ions. The magnitude of the shifts turned out to be comparable with the large shifts of the R lines of the Cr^3+ luminescence in SrTiO_3:Cr and KTaO_3:Cr crystals, that is, substantially larger than that for the three-charged rare earth ions usually observed in the   f – f   luminescence spectra in ionic crystals.
Влияние высокого давления на электрические и гальваномагнитные свойства композита Cd-=SUB=-3-=/SUB=-As-=SUB=-2-=/SUB=--20mol.% MnAs
Authors: Сайпулаева Л.А. , Гаджиалиев М.М. , Алибеков А.Г. , Мельникова Н.В. , Захвалинский В.С. , Риль А.И. , Маренкин С.Ф. , Бабушкин А.Н.
Published: March 2020

Abstract The pressure dependences of electrical resistance, Hall coefficient, charge carrier mobilities, and magnetoresistance of the Cd_3As_2–20 mol % MnAs composite are investigated at pressures up to 9 GPa. The pressure dependences of all the listed properties exhibit features related to phase transitions. The presence of pressure-induced negative magnetoresistance is registered.
Магнитострикционные аномалии редкоземельных фаз Лавеса c морфотропным фазовым переходом
Authors: Политова Г.А. , Ганин М.А. , Михайлова А.Б. , Филимонов А.В.
Published: March 2020

Оver recent years in the process of searching for compounds with high or almost zero magnetostriction values, a number of pseudo-binary Laves RT2 phases with morphotropic phase transitions are attracted particular attention. That is, systems of compounds with a morphotropic phase boundary in the phase diagram. In this paper, the magnetic and magnetostrictive properties of multicomponent systems of compounds Tb0.2Dy0.8-хGdxCo2 and Tb0.2Dy0.8-хGdxCo1.9Al0.1 in which a morphotropic phase transition is observed when replacing dysprosium with gadolinium have been studied. A relationship between the temperature behavior, the sign and magnitude of magnetostrictive deformations, and the type of distortion of the cubic lattice of the studied Laves phases is revealed. In the region of magnetic phase transitions, the magnetocaloric effect was investigated.
Эффект памяти формы в микроразмерном образце сплава Гейслера Ni-Mn-Ga-Cu
Authors: Маширов А.В. , Иржак А.В. , Кошелев А.В. , Андреев Н.В. , Колесов К.А. , Каманцев А.П. , Коледов В.В. , Шавров В.Г.
Published: March 2020

The paper demonstrates the shape memory effect in a ferromagnetic micro-sample of Heusler alloy Ni50Mn18.5Ga25Cu6.5. The microsample was made using focused ion beam technology and has an overall size of 23 × 1.28 × 4 μm. It was found that the value of elastic deformation in the martensitic phase exceeds the value of the shape memory effect, which is based on residual deformation due to twinning. The maximum value of the shape memory effect was 3.4%.
Нелокальные солитоны в нелинейной цепочке атомов
Authors: Гаджимурадов Т.А. , Агаларов А.М.
Published: March 2020

A nonlinear 1D chain with nonlocal interaction is considered. Using the multiscale expansion method, a nonlocal equation is obtained that describes the propagation of envelope waves in a medium.
The properties of the obtained equation were studied and exact soliton-like solutions were constructed by the Darboux method of transformations.
Дифракция плоской электромагнитной волны на микрошаре из VO-=SUB=-2-=/SUB=- в области фазового перехода
Authors: Бычков И.В. , Кузьмин Д.А. , Толкачев В.А. , Каманцев А.П. , Коледов В.В. , Шавров В.Г.
Published: March 2020

The paper presents the results of diffraction studies and the distribution of the electromagnetic (EM) field in a spherical particle of vanadium dioxide (VO2) before and after the metal-semiconductor phase transition (MSPT). As a result of calculations, it was shown that after the phase transition point in VO2 (T > Tc), the EM wave radiation practically does not pass into the microsphere, but is almost completely reflected from it and scatters, which is associated with a sharp increase in the imaginary part of the dielectric constant of the microsphere and the transition of VO2 into the metal state, and the commensurability of the EM wavelength with the radius of the ball. It was also revealed that the radiation intensity at a distance of 2R from the surface of the spherical particle decreases sharply, which is associated with the interference of waves behind the particle (shadow region). From the modeling of diffraction and distribution of the EM field in the microsphere, we can propose a new method for studying of phase transitions of the MSPT type.
Индуцированный фазовый переход в прозрачной керамике PbMg-=SUB=-1/3-=/SUB=-Nb-=SUB=-2/3-=/SUB=-O-=SUB=-3-=/SUB=--xPb(Zr-=SUB=-0.53-=/SUB=-Ti-=SUB=-0.47-=/SUB=-)O-=SUB=-3-=/SUB=-
Authors: Камзина Л.С.
Published: March 2020

Abstract Time dependences of permittivity and optical transmission in the Pb(Mg_1/3Nb_2/3)O_3 –x Pb(Zr_0 . 53Ti_0 . 47)O_3 ( x = 16, 23, and 33%) transparent ferroelectric ceramics are studied in the electric fields of 0 < E < 6 kV/cm. It is shown that even in fields, which are less than the coercive field, a sharp decrease in the permittivity occurs in compounds with x equal to 16 and 23% in a short time, while these changes in the ceramics with x = 33% are significantly smaller and occur over a longer time. It is found that the stability of the phase induced in the field after its switching-off significantly depends on the composition of studied ceramics: the higher the x value is, the more stable the induced phase. The observed difference in the time dependences of permittivity and stability of the induced phase in ceramics with different composition is explained by different sizes of ferroelectric domains.
Predicting Onset of Dementia Using Clinical Notes and Machine Learning: Case-Control Study
Authors: Hane Christopher A , Nori Vijay S , Crown William H , Sanghavi Darshak M , Bleicher Paul
Published: March 2020

Background

Clinical trials need efficient tools to assist in recruiting patients at risk of Alzheimer disease and related dementias (ADRD). Early detection can also assist patients with financial planning for long-term care. Clinical notes are an important, underutilized source of information in machine learning models because of the cost of collection and complexity of analysis.

Objective

This study aimed to investigate the use of deidentified clinical notes from multiple hospital systems collected over 10 years to augment retrospective machine learning models of the risk of developing ADRD.

Methods

We used 2 years of data to predict the future outcome of ADRD onset. Clinical notes are provided in a deidentified format with specific terms and sentiments. Terms in clinical notes are embedded into a 100-dimensional vector space to identify clusters of related terms and abbreviations that differ across hospital systems and individual clinicians.

Results

When using clinical notes, the area under the curve (AUC) improved from 0.85 to 0.94, and positive predictive value (PPV) increased from 45.07% (25,245/56,018) to 68.32% (14,153/20,717) in the model at disease onset. Models with clinical notes improved in both AUC and PPV in years 3-6 when notes’ volume was largest; results are mixed in years 7 and 8 with the smallest cohorts.

Conclusions

Although clinical notes helped in the short term, the presence of ADRD symptomatic terms years earlier than onset adds evidence to other studies that clinicians undercode diagnoses of ADRD. De-identified clinical notes increase the accuracy of risk models. Clinical notes collected across multiple hospital systems via natural language processing can be merged using postprocessing techniques to aid model accuracy.
Connecting self-monitoring device and hypertension management: A qualitative inquiry of women with hypertension in rural Bangladesh (Preprint)
Authors: Rahman Atiqur , Jahan Yasmin
Published: March 2020

BACKGROUND

Like many other developing countries, the implementation of urinary salt-monitoring devices in hypertension (HTN) management is lagging behind in Bangladesh. One possible reason is the limited resources and lack of awareness that impede to get access to home-based HTN management strategies.

OBJECTIVE

This study has implemented a self-monitoring device (KME-03) with an objective to explore the feasibility of such a device in a rural community level setting to manage HTN. Secondly, the study aimed at showcasing if and how associated socio-cultural aspects influence the understanding of salt intake.

METHODS

A qualitative approach was adopted for data collection using focus group discussion and key informant interviews. Participants (n=24) were recruited from two different categories namely, community health worker (CHW) (n=8), and hypertensive women (n=16) and the result is reported following the Standards for Reporting Qualitative Research (SRQR) guideline. Data were analyzed using the framework method.

RESULTS

Two potential themes were emerged (a) perceptions on KME-03: CHW and hypertensive patient; and (b) beliefs of salt intake: Socio-cultural cohesion. The main finding indicated the KME-03 device was effective for urinary salt excretion measurement and can potentially be applicable to HTN self-management. Participants were comfortable with the usage and functionalities of KME-03 and had identified some technical errors. The majority of them have disagreed that the device has reduced extra paperwork. Although few of the participants were aware of the detrimental effects of high salt intake, the majority agreed on unawareness which was stimulated by a number of socio-cultural perceptions. The arbitrarily defined cut-points towards salt intake reported that some individuals were susceptible to salt reduction whereas others did not.

CONCLUSIONS

The CHWs and hypertensive patients found KME-03 device a useful self-management tool in HTN management. The functionalities of the device motivated the participants to integrate HTN management strategies into their everyday life and made them feel like promising perceptions regarding KME-03. However, the findings also denote noteworthy perceptions of salt ingesting practice among HTN patients that are entangled with socio-cultural aspects. This finding has public health significance. Future research should look into this issue more closely to identify components may have an insidious impact on the positive use of self-monitoring device in HTN management.

CLINICALTRIAL

Bangladesh Medical Research Council (BMRC) registration number 06025072017.
Harnessing Telemedicine for the Provision of Health Care: Bibliometric and Scientometric Analysis (Preprint)
Authors: Waqas Ahmed , Teoh Soo Huat , Lapão Luís Velez , Messina Luiz Ary , Correia Jorge César
Published: March 2020

BACKGROUND

In recent decades, advances in information technology have given new momentum to telemedicine research. These advances in telemedicine range from individual to population levels, allowing the exchange of patient information for diagnosis and management of health problems, primary care prevention, and education of physicians via distance learning.

OBJECTIVE

This scientometric investigation aims to examine collaborative research networks, dominant research themes and disciplines, and seminal research studies that have contributed most to the field of telemedicine. This information is vital for scientists, institutions, and policy stakeholders to evaluate research areas where more infrastructural or scholarly contributions are required.

METHODS

For analyses, we used CiteSpace (version 4.0 R5; Drexel University), which is a Java-based software that allows scientometric analysis, especially visualization of collaborative networks and research themes in a specific field.

RESULTS

We found that scholarly activity has experienced a significant increase in the last decade. Most important works were conducted by institutions located in high-income countries. A discipline-specific shift from radiology to telestroke, teledermatology, telepsychiatry, and primary care was observed. The most important innovations that yielded a collaborative influence were reported in the following medical disciplines, in descending order: public environmental and occupational health, psychiatry, pediatrics, health policy and services, nursing, rehabilitation, radiology, pharmacology, surgery, respiratory medicine, neurosciences, obstetrics, and geriatrics.

CONCLUSIONS

Despite a continuous rise in scholarly activity in telemedicine, we noticed several gaps in the literature. For instance, all the primary and secondary research central to telemedicine was conducted in the context of high-income countries, including the evidence synthesis approaches that pertained to implementation aspects of telemedicine. Furthermore, the research landscape and implementation of telemedicine infrastructure are expected to see exponential progress during and after the COVID-19 era.
Research in Beef Tenderness and Palatability in the Era of Big Data
Authors: Hocquette Jean-Francois , Ellies-Oury Marie-Pierre , Legrand Isabelle , Pethick David , Gardner Graham , Wierzbicki Jerzy , Polkinghorne Rod J.
Published: March 2020

For decades, research has focused on predicting beef palatability using muscle biochemical traits, and various biomarkers. In these approaches, a precise definition of the variable to predict (tenderness assessed by panelists, untrained consumers, or shear force), and repeatability of the measurements are crucial for creating significant data resources for the derivation of robust predictive models, and rigorous validation testing. This “big data” approach also requires careful definition of traits and transparent principles for data sharing and management. As in other fields, meat science researchers should improve the Findability, Accessibility, Interoperability, and Reuse of data (known as the FAIR principles). Furthermore, with the rapid evolution of new measurement technologies, the traits that they measure must be consistently described, enhancing our ability to integrate these new measurements into existing description systems. For beef, strategic choices have been made in order to consider real consumers’ expectations, not well estimated correctly by lab approaches. This strategy has been successfully developed in Australia, which set up the “Meat Standards Australia” grading scheme, now partly adopted by the beef industry. The ambitions of the International Meat Research 3G Foundation is to develop beef ontology, to set up an international database with a huge number of consumers’ scores related to beef palatability and collected according to standard protocols. The foundation also aims to support the beef industry by offering an international predictive model of beef palatability, flexible enough to take into account any local livestock characteristics or regional consumer specificity. This approach is supported by the United Nations Economic Commission for Europe (UNECE), which is promoting development of regulations and norms, technical cooperation and exchange of best expertise and practices. This will substantially improve the transparency of data flow and price signaling between all participants of the value chain, from beef producers through to consumers at retail.
ADVANCED MORPHOLOGICAL APPROACH IN AEROSPACE DESIGN DURING CONCEPTUAL STAGE
Authors: Bardenhagen Andreas , Rakov Dmitry
Published: March 2020

This paper presents an advanced morphological approach supporting designers and developers in their search for as well as synthesis and analysis of new engineering solutions during the conceptual design stage. The proposed method is based on the cluster analysis and the set theory, the set of rules and engineering implementations maximizing the gain of the products potential. The number of possible combinations using the standard morphological technology is extremely large. We present a mathematical framework that handles this problem. The method was evaluated with case studies of new engineering solutions in aerospace, ecology and adaptive soundproofing system. The case studies verified the significant potential of the proposed approach in comparison with the methods presently in use.
QUASI-STATIC INDENTATION BEHAVIOR OF GFRP WITH MILLED GLASS FIBER FILLER MONITORED BY ACOUSTIC EMISSION
Authors: Saravanakumar Kannivel , Sai Lakshminarayanan Balakrishnan , Arumugam Vellayaraj , Santulli Carlo , Pavlovic Ana , Fragassa Cristiano
Published: March 2020

This paper aims at investigating the influence of the addition of milled glass fibers upon quasi-static indentation (QSI) properties of glass/epoxy composite laminates. The QSI behavior was experimentally studied by evaluating indentation force, residual dent depth, energy absorbed and size of the damaged area for different indentation depths. Following the QSI tests, the filler-loaded glass/epoxy samples were subjected to three-point bending tests in order to measure residual flexural strength, and the results were compared with the baseline glass/epoxy samples. Both tests were performed with online acoustic emission monitoring in order to observe damage progression and characterize different fracture mechanisms associated with loading. The results show that the filler-loaded laminates exhibit a substantial improvement in the peak force and contact stiffness, with a reduced permanent damage both in terms of depth and of area, in comparison with the baseline ones. It is found that the filler presence offers greater stiffness and higher energy dissipation through toughening mechanisms such as filler debonding/pullout and filler bridging/interlocking.
REDESIGN AND TOPOLOGY OPTIMIZATION OF AN INDUSTRIAL ROBOT LINK FOR ADDITIVE MANUFACTURING
Authors: Tsirogiannis Evangelos , Vosniakos George-Christopher
Published: March 2020

Design optimization for Additive Manufacturing is demonstrated by the example of an industrial robot link. The part is first redesigned so that its shape details are compatible with the requirements of the Selective Laser Sintering technique. Subsequently, the SIMP method of topology optimization is utilized on commercially available software in order to obtain the optimum design of the part with restrictions applicable to Additive Manufacturing, namely member thickness, symmetry and avoidance of cavities and undercuts. Mass and strain energy are the design responses. The volume was constrained by a fraction of the initial mass. The desired minimization of maximum strain energy is expressed as an objective function. A 7% reduction in the mass of the part was achieved while its strength and stiffness remained unchanged. The process is supported by topology optimization software but it also involves some trial-and-error depending on the designer’s experience.
NEW CLASS OF DIGITAL MALMQUIST-TYPE ORTHOGONAL FILTERS BASED ON THE GENERALIZED INNER PRODUCT; APPLICATION TO THE MODELING DPCM SYSTEM
Authors: Danković Nikola , Antić Dragan , Nikolić Saša , Milojković Marko , Perić Staniša
Published: March 2020

A new class of cascade digital orthogonal filters of the Malmquist type based on bilinear transformation for mapping poles to zeroes and vice versa is presented in this paper. In a way, it is a generalization of the majority of the classical orthogonal filters and some newly designed filters as well. These filters are orthogonal with respect to the generalized inner product which is actually a generalization of the classical inner product. Outputs of these filters are obtained by using polynomials orthogonal with respect to the new inner product. The main quality of these filters is that they are parametric adaptive. The filter with six sections is practically realized in the Laboratory for Modeling, Simulation and Control Systems. Performances of the designed filter are proved on modeling and identification of the system for differential pulse code modulation. Real response and response from the proposed filter are compared with regard to the chosen criteria function. Also, a comparative analysis of the proposed filter with some existing filters is performed.
COMPARISON OF THREE FUZZY MCDM METHODS FOR SOLVING THE SUPPLIER SELECTION PROBLEM
Authors: Petrović Goran , Mihajlović Jelena , Ćojbašić Žarko , Madić Miloš , Marinković Dragan
Published: March 2020

The evaluation and selection of an optimal, efficient and reliable supplier is becoming more and more important for companies in today’s logistics and supply chain management. Decision-making in the supplier selection domain, as an essential component of the supply chain management, is a complex process since a wide range of diverse criteria, stakeholders and possible solutions are embedded into this process. This paper shows a fuzzy approach in multi – criteria decision-making (MCDM) process. Criteria weights have been determined by fuzzy SWARA (Step-wise Weight Assessment Ratio Analysis) method. Chosen methods, fuzzy TOPSIS (Technique for the Order Preference by Similarity to Ideal Solution), fuzzy WASPAS (Weighted Aggregated Sum Product Assessment) and fuzzy ARAS (Additive Ratio Assessment) have been used for evaluation and selection of suppliers in the case of procurement of THK Linear motion guide components by the group of specialists in the “Lagerton” company in Serbia. Finally, results obtained using different MCDM approaches were compared in order to help managers to identify appropriate method for supplier selection problem solving.
EDGE DETECTION PARAMETER OPTIMIZATION BASED ON THE GENETIC ALGORITHM FOR RAIL TRACK DETECTION
Authors: Pavlović Milan , Nikolić Vlastimir , Simonović Miloš , Mitrović Vladimir , Ćirić Ivan
Published: March 2020

One of the most important parameters in an edge detection process is setting up the proper threshold value. However, that parameter can be different for almost each image, especially for infrared (IR) images. Traditional edge detectors cannot set it adaptively, so they are not very robust. This paper presents optimization of the edge detection parameter, i.e. threshold values for the Canny edge detector, based on the genetic algorithm for rail track detection with respect to minimal value of detection error. First, determination of the optimal high threshold value is performed, and the low threshold value is calculated based on the well-known method. However, detection results were not satisfactory so that, further on, the determination of optimal low and high threshold values is done. Efficiency of the developed method is tested on set of IR images, captured under night-time conditions. The results showed that quality detection is better and the detection error is smaller in the case of determination of both threshold values of the Canny edge detector.
El Campeonato Nacional Femenil de Rugby Xs (2018-2019): la experiencia de la región oriente
Authors: Rojas Flores Georgina
Published: March 2020

El artículo estudia el rugby, pues es un deporte poco analizado, sobre todo en su rama femenil, y presenta las tensiones entre la región, los equipos, las jugadoras, el espíritu de la disciplina y las decisiones institucionales. El objetivo es analizar si la construcción de la región nominal hecha por la Federación Mexicana de Rugby permite la competencia y la competitividad en la región oriente en el Campeonato Nacional Femenil de Rugby 2018-2019. Además, reflexiona en torno a si es una región vivida por las jugadoras y expone los principales obstáculos para el desarrollo del rugby femenil. La evidencia muestra 1) que la competencia y la competitividad son deficientes debido a la composición de la región y su carácter estático, así como a causa de otros obstáculos; 2) que prevalecen estereotipos de género en el deporte; y 3) que la región vivida por parte de las jugadoras es distinta de la estipulada por la Federación Mexicana de Rugby. Las entrevistas semiestructuradas, la revisión documental, un breve ejercicio etnográfico del ciberespacio en redes sociales y el uso de las perspectivas de región y la de género integran la metodología de esta investigación. El trabajo sólo se concentra en la región oriente y deja la invitación para investigaciones futuras sobre el resto de las regiones, así como para otras líneas de investigación.
A New Liu Type of Estimator for the Restricted SUR Estimator
Authors: Månsson Kristofer , Kibria B. M. Golam , Shukur Ghazi
Published: March 2020

A new Liu type of estimator for the seemingly unrelated regression (SUR) models is proposed that may be used when estimating the parameters vector in the presence of multicollinearity if the it is suspected to belong to a linear subspace. The dispersion matrices and the mean squared error (MSE) are derived. The new estimator may have a lower MSE than the traditional estimators. It was shown using simulation techniques the new shrinkage estimator outperforms the commonly used estimators in the presence of multicollinearity.
PRODUÇÃO DE CONHECIMENTO SOBRE GINÁSTICA NA ESCOLA: UMA ANÁLISE DE ARTIGOS, TESES E DISSERTAÇÕES
Authors: Oliveira Lucas Machado de , Barbosa-Rinaldi Ieda Parra , Pizani Juliana
Published: March 2020

Este estudo buscou analisar a produção de conhecimento sobre ginástica na escola no período de 1980 a 2018. Realizamos uma revisão integrativa de artigos publicados em periódicos nacionais e teses e dissertações dos programas de pós-graduação em educação física existentes no Brasil. Verificamos um total de 40 estudos sobre ginástica na escola e que o olhar para essa temática é restrito, não sendo suficiente para embasar a prática dos professores e contribuir para uma mudança no trato com o conteúdo gímnico dentro da escola. Acreditamos que reconhecer a importância dessa manifestação perpassa pela constituição de um conhecimento científico sólido sobre a ginástica, suas demandas e sobretudo, suas possibilidades para a escola.
The impact of audit committee on real earnings management: Evidence from Netherlands
Authors: Masmoudi Mardessi Sana , Makni Fourati Yosra
Published: March 2020

This paper aims to examine the effect of the characteristics of an audit committee on real earnings management in the Dutch context. Our sample is composed of 80 non-financial companies listed on the Amsterdam Stock Exchange during the period between 2010 and 2017. Four proxies are used to measure audit committee characteristics, namely, audit committee independence, financial expertise, gender diversity, and audit committee meetings. To test our hypotheses, we use a regression model to identify the influence of a set of audit committee characteristics on real earnings management after controlling for firm audit committee size, leverage, size, loss, growth and board size. Our analyses provide evidence that audit committee independence and gender diversity constrain real earnings management. Our findings also suggest that audit committee financial expertise reduces to some extent the likelihood of engaging in real earnings management. To the best of our knowledge, the Dutch context is not yet explored especially following the issue of the long-awaited new Dutch Corporate Governance Code in 2016 which has been updated for a long period in 2008. Therefore, corporate governance is a relevant topic in the Netherlands. This study contributes geographically to the Audit Committee and earnings management literature that examines another possible method, specifically, real earnings management.
Analysis and application of building heating and thermal energy management system
Authors: Liao Zhinong
Published: March 2020

Objective: Through the analysis and application of building heating and thermal energy management system, this paper proposes a new thermal energy control strategy to improve the automation level of building heating optimization. Method: This study analyzes the principle of indoor heat balance in buildings. Aiming at the different heating needs of different buildings, a new control strategy is proposed by combining neural network models and fuzzy control theory. Finally, this strategy is applied to the actual building heating, and the practical application value of the strategy proposed by this study is verified through experiments. Result: In the heating stage, after applying the control strategy, the maximum relative error of the temperature is 0.047, and the average error is 0.013. In the antifreeze stage, the maximum error is 0.143 and the average error is 0.09. After the implementation of the control strategy, the temperature fluctuations in the room change little and remain almost between 19 ?C and 21 ?C. Buildings consume less heat with the highest energy saving rate of 14.37% and the average energy saving rate of 9.23%. Conclusion: The control strategy proposed in this study can adjust the indoor temperature according to the actual situation and achieve the purpose of reasonable heat use. Moreover, it has certain energy-saving effects and can be applied to building heating.
Analysis of thermal storage performances of solar thermal power generation unit using computer numerical simulation analysis
Authors: Wang Ruilian , Ren Yan , Xie Minping
Published: March 2020

Objective: In this study, the single tank inclined layer heat storage system is simulated and analyzed by computer, so as to explore the performance of the heat storage device of the solar thermal generator system. Method: First of all, for the phase change thermal storage unit, its physical model of is established. Heat transfer fluid is Hitec salt, and phase change material is potassium nitrate. Then, as for the phase change thermal storage unit, its numerical model of is established. The simulation results of the numerical model are verified. Finally, through numerical simulation, how do the inlet velocity of the heat exchange fluid and the ambient temperature influence the heat storage performance is analyzed. Results: The heat storage period of the regenerator will decrease when the inlet velocity of the heat exchange fluid increases, but the heat storage efficiency of the regenerator will decrease. Therefore, in this study, under the premise of ensuring a higher heat storage efficiency and a shorter heat storage cycle, it is more reasonable to choose 0.25 m/s as the inlet velocity. In winter and summer, it is necessary to insulate the tank. On the one hand, the heat loss can be reduced. On the other hand, the heat storage efficiency of single tank can be improved. Conclusion: Analysing the efficiency of the single tank thermal storage device can provide a reference for the optimal design of the solar heat plant thermal storage tank, and lay a certain foundation for its theoretical and experimental research.
Imitation analysis of cremation furnace heat transfer under the finite element simulation software
Authors: Jia Jingyun , Zou Xiaolong , Chen Xiantao , Wang Haibin , Sun Qiang
Published: March 2020

To promote the full combustion efficiency of a body cremation furnace during cremation, the temperature and velocity of cremation furnace in the process of body combustion are simulated by finite element model. Firstly, the simplified finite element analysis model of cremation furnace and its finite element software is introduced in this study, and then the flow model, heat transfer model, and combustion model needed in the heat transfer process are described. According to the requirements of the finite element model, the mesh generation process of the cremation furnace model and the numerical solution method are presented. Finally, the model used in this study is verified by the test and simulation results. The results show that the method is reliable. Besides, the design parameters of the temperature part and the combustion speed part of the furnace under six different working conditions are analyzed to further optimize the structure of the furnace. The results of this study provide a good theoretical basis for cremation equipment and promote the development of China?s cremation industry.
Thermal energy diagnosis of boiler plant by computer image processing and neural network technology
Authors: Yu Guoli , Sang Jinge , Sun Yafei
Published: March 2020

The paper aims to study the identification and diagnosis of infrared thermal fault of airborne circuit board of equipment, expand the application of intelligent algorithm in infrared thermal fault diagnosis, and promote the development of computer image processing technology and neural network technology in the field of thermal diagnosis. Taking the airborne circuit board in the boiler plant as the research object, first, the sequential analysis method was selected to collect the temperature changes during the operation of the circuit board. Second, on the basis of convolutional neural network, the program was written in Python, and the Relu function was used as the activation function establish the thermal fault diagnosis method of the on-board circuit board of the boiler plant equipment based on the convolutional neural network model. Third, based on the support vector machine intelligent algorithm, genetic algorithm was used to optimize the parameters, and combined with the grey prediction model, the infrared thermal fault diagnosis scheme of the circuit board of the multistage support vector machine boiler plant equipment was constructed. The results showed that the accuracy of the model after 6000 iterations was stable between 0.92-0.96, and the loss function value was stable at about 0.17. After the optimization of genetic algorithm, the accuracy of thermal fault diagnosis based on support vector machine model was optimized. Compared with grey prediction model, the accuracy of support vector machine model for fault diagnosis was higher, mean square error value was 0.0258, and the correlation coefficient was 91.55%. To sum up, the support vector machin model shows higher accuracy than grey prediction model, which can be used for thermal fault diagnosis.
Temperature field distribution analysis for cargo oil on microwave heating process
Authors: Wu Wenfeng , Zhang Jiakuo , Lu Jinshu , Gao Jialin , Sun Fan , Deng Jiajia , Wei Dongze
Published: March 2020

This paper uses microwave technology to study the heating process of cargo oil in tanker side cabin under the static environment. The research is aimed to improve the heat transfer efficiency of cargo oil and solve the problems of uneven temperature distribution and energy consumption during the heating process of traditional crude-oil in oil tank. Based on the theory of microwave heating and heat transfer, the finite element simulation software is used to couple the microwave and temperature field during the cargo oil is heated to simulate the changing characteristics of the temperature field in static environment, and then verify the numerical results of the existing experiments. The simulation results show that the numerical results of this model agree well with the experimental data, and the error is in the range of 6.21-13.84%. Therefore, the accuracy of the numerical method can be verified. During the heating process, the absorption of microwave energy has a positive correlation with the electric field intensity distribution. The microwave field shows a ?strong point? distribution characteristic. Heat transfer is accompanied by natural-convection and heat conduction, and the oil temperature distribution is more balanced under the combined effect, which shows that the microwave heating of oil tankers have certain feasibility. The results of this study can provide a theoretical basis for studying the heat transfer law of oil tanker cargo steam and microwave combined heating process.