bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Motivasi terhadap Kepuasan Kerja
Authors: Salmi Rahmi
Published: November 2019

This study aims to analyze the effect of motivation on job satisfaction as well as in improving one's performance, the hypothesis that proposed work motivation has a very significant effect on job satisfaction, leadership is very influential on employee performance in providing motivation to subordinates and for that the leader is responsible for improving the performance of that employee. Motivation is a process of giving encouragement or encouragement so that the person wants to do something to achieve a goal.Keywords: (motivation, job satisfaction, employee performance).
Review Indonesia's Effort to Achieve Globally Competitive Human Resources
Authors: Claudia Cindy
Published: November 2019

Saat ini indonesia telah mengalami revolusi industri 4.0 dimana SDM akan dapat diagntikan oleh mesin dan teknologi. untuk itu perlu adanya strategi dalam mengembangkan SDM
Pengaruh Perbedaan Individu Terhadap Kinerja Karyawan
Authors: rahmayuni intan
Published: November 2019

Writing this article aims to increase knowledge about performance that can be improved through trust. Between the personality of an individual with his performance when carrying out tasks is very related, because each individual is different will affect the results of research in the company.
pentingnya hubungan antar mnusia terhadap kinerja karyawan
Authors: melsa sonia , Ermita
Published: November 2019

artikel ini bertujuan untuk mengetahui pentingnya hubungan antar manusia terhadap kinerja karyawan
Discrimination, Life Stress, and Mental Health among Muslims: A Preregistered Systematic Review and Meta-Analysis
Authors: Kathawalla Ummul-Kiram , Syed Moin
Published: November 2019

Research suggests that experiences of discrimination and life stressors are associated with negative mental-health outcomes for Muslim populations in western countries. The current study reports on two meta-analyses based on 295 correlations from 130 unique samples and 27,725 individuals, examining the associations of discrimination and life stressors, both separately and jointly, with mental health. Discrimination was significantly associated with negative mental-health outcomes (rs = .22–.23). Between-study variability in effects sizes was explained by discrimination level, mental-health outcome, number of discrimination measure items, and refugee status. Life stressors were also significantly associated with negative mental-health outcomes (rs = .32–.37). Between-study variability in effect sizes was explained by publication bias, sample population, number of life stressor measure items, continent, and ethnicity. Both omnibus effect-size estimates were robust to tests of publication bias, outliers, and within-study dependence. Results suggest unique associations between both discrimination and life stressors with mental health. In the current sociopolitical climate, this study is an important step to better serve the mental health needs of the growing global Muslim community.
Positive Imagery Cognitive Bias Modification for Symptoms of Depression amongst University Students in Pakistan: A Pilot Study
Authors: Bibi Akhtar , Margraf Jürgen , Blackwell Simon Edward
Published: November 2019

Depression is highly prevalent amongst university students in Pakistan but treatment provision is inadequate. Computerized interventions may provide one means of overcoming treatment barriers. The present study piloted a computerized cognitive training paradigm involving repeated generation of positive mental imagery, imagery Cognitive Bias Modification (imagery CBM), as a potential brief intervention for symptoms of depression amongst university students in Pakistan. Fifty-five participants scoring above a questionnaire cut-off indicating at least mild levels of depression were randomly assigned to either imagery CBM or a sham training control condition (Peripheral Vision Task, PVT). Participants were instructed to complete one training session from home daily over the course of one week. Outcomes were measured at post-training and a subsequent two-week follow-up, and included measures of depression, anhedonia, and positive affect. Participants provided positive feedback about the imagery CBM intervention, but encountered practical problems with the study schedule, resulting in high rates of attrition, particularly at follow-up. Further, internal consistency of outcome measures was often low, and the PVT did not appear to be an adequate control condition in this study. However, overall the results suggest that with appropriate adaptations to the study methods formal investigation of efficacy is warranted.
Exploring word memorability: How well do different word properties explain item free-recall probability?
Authors: Madan Christopher R
Published: November 2019

What makes some words more memorable than others? Words can vary in many dimensions, and a variety of lexical, semantic, and affective properties have previously been associated with variability in recall performance. Free recall data were used from 147 participants across 20 experimental sessions from the Penn Electrophysiology of Encoding and Retrieval Study (PEERS) data set, across 1,638 words. Here, I consider how well 20 different word properties—across lexical, semantic, and affective dimensions—relate to free recall. Semantic dimensions, particularly animacy (better memory for living), usefulness (with respect to survival; better memory for useful), and size (better memory for larger) demonstrated the strongest relationships with recall probability. These key results were then examined and replicated in the free recall data from Lau, Goh, and Yap (Quarterly Journal of Experimental Psychology, 71, 2207–2222, 2018), which had 532 words and 116 participants. This comprehensive investigation of a variety of word memorability demonstrates that semantic and function-related psycholinguistic properties play an important role in verbal memory processes.
Working Memory Impairment in Euthymic State of Bipolar Disorder
Authors: Jha A , Joshi D , Kattel P , Koirala P
Published: November 2019

Introduction: Cognitive deficits in bipolar disorders persist after the subsidence of active symptoms. This study was carried out to assess the working memory of patients with bipolar disorder in euthymic state.

Material And Method: Forty euthymic bipolar patients attending a tertiary care mental hospital with equal number of matched controls in terms of age, sex and education were included in the study. Working memory assessments was done using WAIS-III digit span subtest.

Results: The mean of total digit span test for case group was 8.48±2.04 similarly it was 10.33±2.32 for the controls. The result showed that the mean digit span of cases and control groups are significantly different (p value of < 0.01). The Pearsons correlation between the clinical variables and working memory test in euthymic bipolar patients (case group) was found that the total score for digit span test was negatively correlated with all other clinical variables However, this correlation was found to be non-significant.

Conclusion: The working memory impairment persists in remitted bipolar disorder patients and this may represent underlying trait abnormality not the state abnormality.
Reflection of a Convener, PANCON-7
Authors: Shakya DR
Published: November 2019

Not available.
Editorial Vol.4(4)
Authors: Lamichhane Basanta Raj
Published: November 2019

It is our great pleasure to come up with our fourth issues of Mathematics Education Forum Chitwan (MEFC) as a peer-reviewed journal.
Analyzing Predator-Prey Model
Authors: Kunwar Laxman Bahadur
Published: November 2019

In this article, we consider a system involving two-species living in the same environment and describe the model for their population growth presented by Lotka and Volterra. The model is the foundation for the development of many other models. The model is known as Predator-Prey Model or Lotka-Volterra system. In more modern theories, there will be multiple species each with their own interactions but we will limit ourselves to this simpler but highly instructive classical system. We shall cover various standard tools for analysing such systems. We shall discuss dynamic solutions, equilibrium solutions and phase curves that best illustrate the phenomena.
Manifestaciones atípicas del síndrome de vasculitis-angeítis- endotelitis (SVAE) cutánea
Authors: Baquero Gary Andrés , Tróchez Pablo Alonso , Campo Piedad , Bocanegra Diana Milena , García Grégory Alfonso
Published: November 2019

Se reportan dos pacientes con diagnóstico histopatológico de vasculitis cutánea de presentación clínica atípica. Un joven de 13 años con lesiones bullosas y flictenulares generalizadas de 2-3 cm sin sobreinfección, que se iniciaron en la cavidad oral y se extendieron al tórax anterior y extremidades, asociadas con infección ventilo-respiratoria tipo neumonía adquirida en la comunidad (NAC), que requirió antibióticos y corticoides sistémicos, con resolución completa a los 17 días y diagnóstico definitivo de vasculitis por hipersensibilidad. El otro paciente corresponde a un adulto de 58 años con historia de 18 meses de lesiones maculares purpúricas en miembros superiores e inferiores, algunas confluyen generando placas violáceas no mayores de 5 cm. Cursó con diabetes, retinopatía e hipertensión arterial. La biopsia mostró vasculitis leucocitoclásica con “signo de promontorio”, por lo cual se sospechó sarcoma de Kaposi que se descartó. El diagnóstico definitivo fue vasculitis linfocítica en pitiriasis liquenoide crónica (PLC).
Forecasting incidence of tuberculosis cases in Brazil based on various univariate time-series models
Authors: Ribeiro Rhuan Carlos Martins , Quadros Thaynara Araújo , Ausique John Jairo Saldarriaga , Chase Otavio Andre , Campos Pedro Silvestre da Silva , Júnior Paulo Cerqueira dos Santos , Almeida José Felipe Souza de , Marques Glauber Tadaiesky
Published: November 2019

Tuberculosis (TB) remains the world's deadliest infectious disease and is a serious public health problem. Control for this disease still presents several difficulties, requiring strategies for the execution of immediate combat and intervention actions. Given that changes through the decision-making process are guided by current information and future prognoses, it is critical that a country's public health managers rely on accurate predictions that can detect the evolving incidence phenomena. of TB. Thus, this study aims to analyze the accuracy of predictions of three univariate models based on time series of diagnosed TB cases in Brazil, from January 2001 to June 2018, in order to establish which model presents better performance. For the second half of 2018. From this, data were collected from the Department of Informatics of the Unified Health System (DATASUS), which were submitted to the methods of Simple Exponential Smoothing (SES), Holt-Winters Exponential Smoothing (HWES) and the Integrated Autoregressive Moving Average (ARIMA) model. In the performance analysis and model selection, six criteria based on precision errors were established: Mean Square Error (MSE), Root Mean Square Error (RMSE), Mean Absolute Error (MAE), Mean Absolute Percent Error (MAPE) and Theil's U statistic (U1 and U2). According to the results obtained, the HWES (0.2, 0.1, 0.1) presented a high performance in relation to the error metrics, consisting of the best model compared to the other two methodologies compared here.
Posterior foraminotomy versus anterior decompression and fusion in patients with cervical degenerative disc disease with radiculopathy: up to 5 years of outcome from the national Swedish Spine Register
Authors: MacDowall Anna , Heary Robert F. , Holy Marek , Lindhagen Lars , Olerud Claes
Published: November 2019

OBJECTIVE

The long-term efficacy of posterior foraminotomy compared with anterior cervical decompression and fusion (ACDF) for the treatment of degenerative disc disease with radiculopathy has not been previously investigated in a population-based cohort.

METHODS

All patients in the national Swedish Spine Register (Swespine) from January 1, 2006, until November 15, 2017, with cervical degenerative disc disease and radiculopathy were assessed. Using propensity score matching, patients treated with posterior foraminotomy were compared with those undergoing ACDF. The primary outcome measure was the Neck Disability Index (NDI), a patient-reported outcome score ranging from 0% to 100%, with higher scores indicating greater disability. A minimal clinically important difference was defined as > 15%. Secondary outcomes were assessed with additional patient-reported outcome measures (PROMs).

RESULTS

A total of 4368 patients (2136/2232 women/men) met the inclusion criteria. Posterior foraminotomy was performed in 647 patients, and 3721 patients underwent ACDF. After meticulous propensity score matching, 570 patients with a mean age of 54 years remained in each group. Both groups had substantial decreases in their NDI scores; however, after 5 years, the difference was not significant (2.3%, 95% CI −4.1% to 8.4%; p = 0.48) between the groups. There were no significant differences between the groups in EQ-5D or visual analog scale (VAS) for neck and arm scores. The secondary surgeries on the index level due to restenosis were more frequent in the foraminotomy group (6/100 patients vs 1/100), but on the adjacent segments there was no difference between groups (2/100).

CONCLUSIONS

In patients with cervical degenerative disc disease and radiculopathy, both groups demonstrated clinical improvements at the 5-year follow-up that were comparable and did not achieve a clinically important difference from one another, even though the reoperation rate favored the ACDF group. This study design obtains population-based results, which are generalizable.
Use of Augmented Reality in Chemistry Education
Authors: Нечипуренко Павло , Старова Тетяна , Селіванова Тетяна , Томіліна Анна , Учитель Олександр
Published: November 2019

Nechypurenko P.P., Starova T.V., Selivanova T.V. and Tomilina A.O. Use of Augmented Reality in Chemistry Education.

The purpose of this article is to analyze the current trends in the use of the augmented reality in the chemistry education and to identify the promising areas for the introduction of AR–technologies to support thechemistry education in Ukrainian educational institutions. The article is aimed at solving such problems as: the generalization and analysis of the scientific researches results on the use of the augmented reality in the chemistry education, the characteristics of the modern AR–tools in the chemistry education and the forecasting of some possible areas of the development and improvement of the Ukrainian tools of the augmented reality in the chemistry education. The object of research is the augmented reality, and the subject is the use of the augmented reality in the chemistry learning. As a result of the study, it has been found that AR–technologies are actively used in the chemistry education and their effectiveness has been proven, but there are still no Ukrainian software products in this field. Frequently AR–technologiesof the chemistry education are used for 3D visualization of the structure of atoms, molecules, crystalline lattices. The study has made it possible to conclude that there is a significant demand for the chemistry education with the augmented reality that is available via the mobile devices, and accordingly the need to develop the appropriate tools to support the chemistry education at schools and universities. The most promising thing is the development of methodological recommendations for the implementation of laboratory works, textbooks, popular scientific literature on chemistry with the use of the augmented reality technologies and the creation of the simulators for workingwith the chemical equipment and utensils using the augmented reality.
Computer Simulation of Biological Processes at the High School
Authors: Комарова Олена , Азарян Альберт
Published: November 2019

Komarova O. V. and Azaryan A. A. Computer Simulation of Biological Processes at the High School.

Research goals: the necessity of study in high school of the law of Hardy — Weinberg as one of the fundamental genetic laws was justified. The peculiarities of using the method of model experiment in the studyof the genetic and evolutionary processes in populations with the use of computer technology. Object of research: computer simulation of population genetic structure. Subject of research: computer simulation of genetic and evolutionary processes in ideal and real populations. Research methods: pedagogical experiment (survey), analysis of scientific publications on the use of the high school method of modelling genetic and evolutionary processes in populations, computer simulation. Results of the research: a web page for processing by the pupils of the modelling results of genetic and evolutionary processes in populations was created.
The Problems of Personnel Training for STEM Education in the Modern Innovative Learning and Research Environment
Authors: Шишкіна Марія
Published: November 2019

Shyshkina M.P. The Problems of Personnel Training for STEM Education in the Modern Innovative Learning and Research Environment.

The aim of the article is to describe the problems of personnel training that arise in view of extension of the STEM approach to education, development of innovative technologies, in particular, virtualization,augmented reality, the use of ICT outsourcing in educational systems design. The object of research is the process of formation and development of the educational and scientific environment of educational institution. The subject of the study is the formation and development of the cloud-based learning and research environment for STEM education. The methods of research are: the analysis of publications on the problem; generalization of domestic and foreign experience; theoretical analysis, system analysis, systematization and generalization of research facts and laws for the development and design of themodel of the cloud-based learning environment, substantiation of the main conclusions. The results of the research are the next: the concepts and the model of the cloud-based environment of STEM education is substantiated, the problems of personnel training at the present stage are outlined.
The Potential of Using Google Expeditions and Google Lens Tools under STEM-education in Ukraine
Authors: Шаповалов Євгеній , Білик Жанна , Атамась Артем , Учитель Олександр
Published: November 2019

Shapovalov Yе.B., Bilyk Zh.I., Atamas A.I., Shapovalov V.V. and Uchytel A.D. The Potential of Using Google Expeditions and Google Lens Tools under STEM-education in Ukraine.

The expediency of using the augmented reality in the case of using of STEM-education in Ukraine is shown. The features of the augmented reality and its classification are described. The possibilities of using the Google Expeditions and Google Lens as platforms of the augmented reality is analyzed. A comparison, analysis, synthesis, induction and deduction was carried out to study the potential of using augmented reality platforms in the educational process. Main characteristics of Google Expeditions and Google Lens are described. There determined that augmented reality tools can improve students motivation to learn and correspond to trends of STEM-education. However, there problems of using of augmented reality platforms, such as the lack of awareness of this system by teachers, the lack of guidance, the absence ofthe Ukrainian-language interface and responding of educational programs of the Ministry of Education and Science of Ukraine. There proposed to involve methodical and pedagogical specialists to development of methodical provision of the tools of augmented reality.
Prospects of Using the Augmented Reality for Training Foreign Students at the Preparatory Departments of Universities in Ukraine
Authors: Зінонос Наталя , Віхрова Олена , Пікільняк Андрій
Published: November 2019

Zinonos N.O., Vikhrova O.V., Pikilnyak A.V. Prospects of Using the Augmented Reality for Training Foreign Students at the Preparatory Departments of Universities in Ukraine.

The purpose of the study is to highlight the potential and the prospects of using the augmented reality in the mathematical education for foreign students at the preparatory departments of universities. Objectives of the study: to determine the peculiarities of the virtualization of the training of foreign students at the preparatory departments of universities, as well as the possibilities of using the technology of complementary reality in the teaching of mathematics. Object of research: a virtually oriented educational environment of foreign students at the preparatory departments of universities. Subject of research: virtualization of learning with the augmented reality of mathematical education of foreign students at the preparatory departments of universities. Used research methods: theoretical — analysis of scientific and methodological literature; empirical-study, observation of the educational process. Results of the research: on the basis of the analysis of scientific publications, the notion of virtualization of education and the virtually oriented educational environment of foreign students at the preparatory departments of higher educational institutions is described. The main conclusions and recommendations: 1) the article outlines the possibilities and prospects of using the augmented reality in the mathematical education for foreign students at the preparatory departments of universities; 2) the considering the various targets of mobileapplications, which are used in solving mathematical problems, as well as analysis of the characteristics of various practical achievements of using the augmented reality in the mathematical preparation for foreign students at the preparatory departments of universities, it is planned to devote a separate work.
Computer Simulation of Neural Networks Using Spreadsheets: The Dawn of the Age of Camelot
Authors: Семеріков Сергій , Теплицький Ілля , Єчкало Юлія , Ків Арнольд
Published: November 2019

Semerikov S.O., Teplytsʹkyy I.O., Yechkalo YU.V. and Kiv A.E. Computer Simulation of Neural Networks Using Spreadsheets: The Dawn of the Age of Camelot.

The article substantiates the necessity to develop training methods of computer simulation of neural networks in the spreadsheet environment. The systematic review of their application to simulating artificial neural networks is performed. The authors distinguish basic approaches to solving the problem of network computer simulation training in the spreadsheet environment, joint application of spreadsheets and tools of neural network simulation, application of third-party add-ins to spreadsheets, development of macros using the embedded languages of spreadsheets; use of standard spreadsheet add-ins for non-linear optimization, creation of neural networks in the spreadsheet environment without add-ins and macros. After analyzing a collection of writings of 1890–1950, the research determines the role of the scientific journal “Bulletin of Mathematical Biophysics”, its founder Nicolas Rashevsky and the scientific community around the journal in creating and developing models and methods of computational neuroscience. There are identified psychophysical basics of creating neural networks, mathematical foundations of neural computing and methods of neuroengineering (image recognition, in particular). The role of Walter Pitts in combining the descriptive and quantitative theories of training is discussed. It is shown that to acquire neural simulation competences in the spreadsheet environment, one should master the models based on the historical and genetic approach. It is indicated that there are three groups of models, which are promising in terms of developing corresponding methods — the continuous two-factor model of Rashevsky, the discrete model of McCulloch and Pitts, and the discrete-continuous models of Householder and Landahl.
Google Classroom as a Tool of Support of Blended Learning for Geography Students
Authors: Бондаренко Ольга , Мантуленко Світлана , Пікільняк Андрій
Published: November 2019

Bondarenko O.V., Mantulenko S.V. and Pikilnyak A.V. Google Classroom as a Tool of Support of Blended Learning for Geography Students. The article reveals the experience of organizing blended learning for geography students using Google Classroom, and discloses its potential uses in the study of geography. For the last three years, the authors have tested such in-class and distance courses as “Cartography and Basics of Topography”, “Population Geography”, “Information Systems and Technologies in Tourism Industry”, “Regional Economic and Social World Geography (Europe and the CIS)”, “Regional Economic and Social World Geography (Africa, Latin America, Asia, Anglo-America, Australia and Oceania)”, “Socio-Economic Cartography”. The advantages of using the speciﬁed interactive tool during the study of geographical disciplines are highlighted out in the article. As it has been established, the organization of the learning process using Google Classroom ensures the unity of in-class and out-of-class learning; it is designed to realize eﬀective interaction of the subjects learning in real time; to monitor the quality of training and control the students’ learning achievements in class as well as out of it, etc. The article outlines the disadvantages that should be taken into account when organizing blended learning using Google Classroom, including the occasional predominance of students’ external motivation in education and their low level of readiness for work in the classroom; insuﬃcient level of material and technical support in some classrooms; need for out-of-class pedagogical support; lack of guidance on the content aspect of Google Classroom pages, etc. Through the test series conducted during 2016–2017, an increase in the number of geography students with a suﬃcient level of academic achievements and a decrease of those with a low level of it was revealed.
Investigation of Opportunities of the Practical Application of the Augmented Reality Technologies in the Information and Educative Environment for Mining Engineers Training in the Higher Education Establishment
Authors: Зелінська Сніжана , Азарян Альберт , Азарян Володимир
Published: November 2019

Zelinska S.O., Azaryan A.A. and Azaryan V.A. Investigation of Opportunities of the Practical Application of the Augmented Reality Technologies in the Information and Educative Environment for Mining Engineers Training in the Higher Education Establishment.

The augmented reality technologies allow receiving the necessary data about the environment and improvement of the information perception. Application of the augmented reality technologies in the information and  educative environment of the higher education establishment will allow receiving the additional instrumental means for education quality increasing. Application of the corresponding instrumental means, to which the platforms of the augmented reality Vuforia, ARToolKit, Kudan can be referred, will allow presenting the lecturers the necessary tools for making of the augmented reality academic programs.
Using the Augmented Reality to Teach of Global Reading of Preschoolers with Autism Spectrum Disorders
Authors: Коломоєць Таміла , Кассім Дар’я
Published: November 2019

Kolomoiets N.H., Kassim D.A. Using the Augmented Reality to Teach of Global Reading of Preschoolers with Autism Spectrum Disorders.

Over the last decade a significant increasing of the number of children with autism spectrum disorders (ASD) in the world is marked. Ukraine is no exception. High rates of disease ASD require finding the new ways of correcting these groups of children. The aim of the research: to substantiate feasibility of using of the augmented reality’s technologies to teach of global reading in a special education of autistic children. In the course of the study an experiment, descriptive and comparative analysis methods, generalization, logical research method were used. Results of the research: it is shown that, it is expedient to use  technologies of the augmented reality in the educational and correctional process of children with ASD to teach them of global reading. Using the augmented reality reveals a number of new opportunities, the promising of which is an interaction with the artificial world through mobile devices, which are more accessible and predictable for the special development of autistic children. At the initial stage of teaching of global reading, the instrument of augmented reality is used in a set of successive task groups. The first of these is aimed at the development of visual perception, the formation of the ability to analyze, isolate and generalize, navigate in space. The second and third set of tasks included the teaching of children to understand the meaning of words, the correlation of words with images presented on the screen of gadgets. At the final stage, namely, teaching of global reading, the technology of augmented reality has opened unlimited possibilities for using of various text materials and virtual images to them. Conclusions: a) an analysis of experimental work with preschoolers with ASD suggests that the use of augmented reality in teaching of global reading of children helps to increase the efficiency of the educational and correctional process; b) the technology of the augmented reality has allowed rising to a qualitatively new level of mastering of global reading by autistic children; c) prospects for further experimental research will be the implementation of the proposed methodology and obtaining its effectiveness and efficiency in practice.
Design and analysis of a U-shape PM embedded salient pole wind generator
Authors: Guo Yujing , Jin Ping , Ding Yan , Zhao Kai , Issoufou Abdoul Zaid
Published: November 2019

In this paper, one kind of U-shape permanent magnet embedded salient pole wind generator is proposed. The permanent magnet is divided into three sections to form a U-shaped structure and inserted into the salient pole in the generator. The size of the PM near the side frame is small, therefore, there is sufficient PM location modification space in the salient pole. Some flux-barriers are set in the upper core of the salient pole, which can reduce the q-axis inductance, and ultimately increases the generator maximum output power. To evaluate the generator’s overall performance, some other important electromagnetic parameters such as the air-gap flux density, the output voltage, the cogging torque, the output power, and the demagnetization performance are all calculated and analyzed base on finite element method (FEM). All the above parameters are compared with that of one V-shape permanent magnet embedded salient pole wind generator. The analysis results show that, with the same volume of permanent magnet, the proposed U-shape permanent magnet embedded salient pole wind generator has higher power density than the V-shape permanent magnet embedded salient pole wind generator.
Eddy current effects on the dynamic response of high-speed solenoid valve for common rail injector
Authors: Zhao Jianhui , Yue Pengfei , Wei Kebiao
Published: November 2019

A high-speed solenoid valve (HSV) with high dynamic responses is a key component of the common rail injector, where it provides accurate and flexible control of the injection. In this study, finite element methods were used to investigate the eddy current inside an HSV. The results demonstrated that the appearance and change in the eddy current were related to the driving current, and significantly influenced the HSV dynamics, particularly the opening response. By considering the eddy current effect, the calculations were seen to match the experimental data effectively during the opening response, but did not match them strongly during the closing response. During the HSV opening process, the eddy current at the surface of the magnetic materials impeded the magnetization; during the closing stage, it prevented the magnetic flux inside the magnetic material from spreading out and delayed demagnetization. An eddy current was proven to always block the magnetic field change and worsen the HSV dynamic response. Slotting on the yoke can significantly reduce the open response time, while hardly influence the close response. It was deemed necessary to optimize the HSV structure to weaken the eddy current effect on the opening and closing response.
Numerical modelling of unilateral point-focusing electromagnetic acoustic transducer with experimental validation
Authors: Sun Hongyu , Wang Shen , Huang Songling , Wang Qing , Zhao Wei
Published: November 2019

Electromagnetic ultrasonic testing, based on the propagation characteristics of the ultrasonic wave in the medium, is an effective technique for defect detection. The structural of the electromagnetic acoustic transducer (EMAT) determines the detection effect, which should be reasonably designed. We propose an improved unilateral point-focusing EMAT structure with curved coils in this manuscript. The 3D model of the designed EMAT is numerically simulated utilizing the finite element method, and the bilateral point-focusing EMAT is also studied for comparison. The simulation results of the magnetic field intensity and the distributions of the displacement are shown in the manuscript, which prove the effectiveness of the improved unilateral point-focusing EMAT. Five impact parameters such as aperture angle, focal position, excitation current, lift-off distance, and coil winding number are investigated in detail. We verify the calculation results of the aperture angle and excitation current by the experiments. The conclusion shows that the focusing intensity of the improved unilateral point-focusing EMAT is relatively higher, and other factors also have a significant effect on the focal intensity.
The importance of berries in the human diet
Authors: Cianciosi Danila , Simal-Gándara Jesús , Forbes-Hernández Tamara Y.
Published: November 2019

Berries are a rich source of bioactive compounds with potential beneficial effects on human health. In the last 5 years, several in vitro, in vivo and clinical studies, summarized in this concise review, have confirmed their preventive effect on the onset of serious diseases such as cancer and cardiovascular diseases, reaffirming the importance of their implementation in the diet.
General practitioner as a gatekeeper and medical scheme benefit design in South Africa.
Authors: Willie Michael , Nkomo Phakamile , Moabelo Martin
Published: November 2019

General Practitioners (GPs) serve as a gatekeeper function in many healthcare systems. Cost containment strategies in the health care ecosystem usually focus on the role of GPs as the point of entry. The healthcare expenditure as the proportion of total healthcare spent on medical schemes in South Africa has been declining over time. This could be attributed to a shift in benefit design and product development employed by schemes. The aim of this study was to investigate GP health spending by medical schemes, the average spent per GP visit, the level of co-payment that members are subjected to and the GP to member ratio in South Africa. The study design was a cross-sectional study which was performed by linking annual statutory returns data, claims data and provider distribution data collected on an annual basis by the Council for Medical Schemes. The data was further mirrored to the Practice code numbering data received from the Board of Healthcare Funders (BHF). A total of 79 medical schemes claims data was included in the analysis, this accounted for nearly 82% of beneficiaries (81.6%). The average number of visits per beneficiaries was 3. The distribution of GPs claiming from medical schemes follow the distribution of beneficiary by province. The ratio of claim GPs per 1000 beneficiaries is 2. These results further revealed a shift in benefit design and that medical scheme members bypass GPs directly to specialist services which is a secondary level of care, thus undermining the role of GPs as gatekeepers. It is concerning that GPs consultation is attracting a co-payment of as high 39%. Reprioritisation and emphasis on the role of a GP as gatekeepers as a function of the benefit design process is key to improving quality of care.
CRB modification to retromandibular approach for management of subcondylar fractures.
Authors: Bande Chandrashekhar , Kurawar Krishna , Maheshkar Ashish , Bhagat Ankita , Goel Manu
Published: November 2019

The aim of this study was to evaluate the efficacy of CRB modification of retromandibular approach to gain surgical access for open reduction and internal fixation of mandibular subcondylar fractures. A total number of 264 sustained extra-capsular subcondylar fractures from 230 patients were selected for the study over the period of 5 years. Evaluation of intraoperative accessibility, postoperative facial nerve function, postoperative complications and scar was carried out. All the patients were treated using CRB Curvilinear approach. Patient follow up was recorded for 1 year on a regular interval basis. Symptoms of postoperative facial nerve injury were seen in 2 patients which recovered with time, postoperative complications were not encountered in any case and minimum scar mark hidden in the cervical skin crease. Hence open reduction and internal fixation for Subcondylar fracture of mandible by using the CRB modification of retromandibular approach is a good alternative for other conventional approaches in having ease of access, ease of fixation, reduced incidences of injury to facial nerve and its branches with good aesthetic outcome.
高压断路器操作机构机械研究
Authors: 谢 江平
Published: November 2019

在电力运输过程中,高压断路器承担着重要责任,主要是为保障电路的合理运行,在电路故障时,能够及时切断电路,避免事态进一步扩大,但是随着电力运行负荷加重,高压断路器出现故障的情况屡见不鲜,导致了较为严重的安全事故,还造成了巨大的经济损失,随后经过具体分析,发现很多问题都是由于操作机构机械故障引起。基于这一情况,为了长远的发展,减少电路损坏造成的损失,同时避免电路维修所需的人力、财力消耗,必须明确其操作机构机械要求,并探索未来发展方向,使之能够更加合理的运行,发挥出更大的经济效益。本文就高压断路器展开分析,探讨其操作机构机械要求,并对其未来发展方向进行论述,希望有助于电力系统运行质量的提升。
浅谈水文与水资源管理在水利工程中的应用
Authors: 许 俊霞
Published: November 2019

经济的发展使得水利工程的数量也在逐渐增多,随着人口数量的上升水资源需求也越来越高,相关的供求问题也在过程中逐渐凸显出来。水文水资源应用在水利工程加固中有着关键作用,决定着水利工程的整体稳定性。本文简述了水文水资源的现状,并深入分析了水文水资源的重要意义。
水利水电工程施工中的边坡开挖及防护技术分析
Authors: 李 丽华
Published: November 2019

水利水电工程建设中,边坡开挖支护是工程建设的重点问题,工程施工中会受到诸多因素的影响,因此工程施工需要应对更大的挑战,且质量控制难度也相对较大,工程施工中也更易产生质量和安全隐患。为保证水利水电工程边坡施工的质量,需合理应用边坡开挖和防护技术。
信息技术在水利工程建设管理中的有效应用
Authors: 孙 超 , 涂 远凯
Published: November 2019

随着现代科学技术发展的不断深入,信息技术也广泛应用于各个领域,其中在水利工程建设管理中有了信息技术的应用,让水利工程建设有了长足的发展,不仅能够提高水利工程建设的管理效率,还能推动其朝着科学化水、智能化、技术化方向发展。本文就重点来分析信息技术在水利工程建设管理中的有效应用,以此为水利工程建设的管理提供有效借鉴和帮助。
水利水电工程对生态环境的影响与解决措施
Authors: 景 新臣
Published: November 2019

新时期下,随着我国社会的发展进步,我国的水利水电工程等社会基础工程的数量也在逐年递增,在一定程度上也给我国的生态环境造成了一定影响,因此,研究水利水电工程对生态环境的影响与解决措施就具有很重要的价值。
水利水电工程中的灌浆施工技术探讨
Authors: 蒋 磊磊
Published: November 2019

在水利水电工程中,灌浆施工技术以及自身所具备的众多特点得到广泛应用。基于此,文章以水利水电工程中较具代表性的水电站为例,对灌浆施工技术中的帷幕灌浆和固结灌浆工艺及实施要点进行论述。为确保灌浆施工的整体质量,作业人员应了解并掌握其中的关键技术,并做好质量检查工作,这样才能使灌浆施工按质、按量、按时完成。
农业水利节水灌溉技术应用的注意事项及其策略
Authors: 邱 磊
Published: November 2019

农业水利节水灌溉技术是一项较为复杂、系统的工程,在整个国民经济体系中占据重要的地位。农田水利节水灌溉工程的建设关系着我国整体农业的发展,它可以充分调动农民生产的积极性。本文从我国农业水利灌溉技术应用现状开始解析,并对我国节水灌溉技术的发展应用提出相应的建议。
水利施工企业项目管理关键问题探讨
Authors: 徐 爱春 , 骆 志明
Published: November 2019

在现代化水利工程建设过程中,项目管理的重要性日益突显出来,施工企业将项目管理应用到施工管理中,既能够规范施工程序,提高施工质量和技术控制效果,又可以推动施工企业的进一步发展,不断完善项目管理理论。因此,在水利工程建设过程中,施工企业需要注重项目管理工作,充分发挥出其作用,不断探索并完善项目管理的实施策略,文章主要对水利施工企业项目管理关键问题进行了研究。
试析水利工程基坑排水施工技术
Authors: 黄 倩
Published: November 2019

基坑排水存在较大的施工难度和较高的技术要求,在实际施工过程中,应做好混凝土材料的选择工作,并结合具体施工情况对防水层和疏水板进行设置,做好施工缝、后浇带和漏水处的处理工作,进而确保水利工程的质量得到有效保障。
现代化技术应用到河道堤防工程的管理及维护分析
Authors: 徐 帷巍
Published: November 2019

河道堤防工程是水利工程的重要组成内容,其关系到整个水利工程的质量与水利工程的基础功能能否实现,但从当前水利工程施工建设中,由于河道堤防工程管理以及维护始终得不到重视,导致河道堤防工程的作用与功能无法发挥,影响着水利工程运行的稳定性与安全性。为此,随着科学技术的发展,基于现代化技术展开河道堤防工程的管理与维护能够有效提升管理与维护工作的质量与效果。基于此,文章具体探究了现代化技术应用到河道堤防工程管理与维护中的策略。
‘A matter both of curioſity and uſefulneſs’: Compiling the Corpus of English Texts on Language
Authors: Monaco Leida Maria , Puente-Castelo Luis
Published: November 2019

This paper describes the compilation of CETeL, the subcorpus on ‘Language and Linguistics’ in the Coruña Corpus of English Scientific Writing, and discusses the various challenges encountered during the process of selection and digitisation of material. CETeL includes forty-four samples of texts on Language, Languages, and Linguistics from the period 1700–1900, and on completion will contain around 400,000 words. The paper will examine the historical context of academic writing in that period and the way in which this context affects the process of compilation. Likewise, the criteria followed in the compilation of the Coruña Corpus will be discussed in order to show the extent to which these criteria have affected the compilation of CETeL, and how they contribute towards making the corpus representative of the disciplinary practices of the period. Finally, the corpus will also be described according to a series of parameters used to assure representativeness and balance, namely the date of publication of samples, their genre, and the sex and linguistic background of their authors.
Load Transfer Stiffness of Two-layer Roller Compacted Concrete for Pavements
Authors: Mohammed Haneen , Thom Nick , Dawson Andrew
Published: November 2019

Roller compacted concrete (RCC) is a form of plain concrete pavement (JPCP). RCC is a zero-slump concrete consisting of well-graded aggregate, cement and water. RCC has many advantages over other pavement types, particularly cost and speed of construction. Recently, RCC has undergone many developments mostly directed towards improving quality, including smoothness and durability. RCC now has the potential to combine the performance of concrete with the low cost of asphalt installation. A two-layer system of RCC with different aggregate types and sizes was utilized in this study. This paper presents the determination of load transfer stiffness across induced joints in a two-layer RCC system based on a cyclic shear test. The test was carried out for three different upper layer placement cases with different crack widths and load magnitudes. From the test results, an approximate equation was formulated to predict joint deterioration. It is suggested that this equation provides a useful tool to assist in the design of two-layer RCC pavement and, potentially for other concrete pavement types.
Generalized Plasmonic Modelling of the Effect of Refractive Index on Laser-Induced Periodic Nanostructures
Authors: Abdelmalek A. , Bedrane Z. , Bharadwaj V. , Amara E.-H. , Ramponi R. , Eaton S. M.
Published: November 2019

Laser-induced periodic surface structures (LIPSS) have been studied theoretically employing generalized plasmonic modelling on several dielectric materials such as SiO2, Al2O3, ZnO, AlAs and diamond exposed to 800 nm wavelength multi-pulse femtosecond laser irradiation. The study of the optical properties of the materials during laser irradiation reveals a formation of a metallic like pseudo-material on the irradiated layer during excitation. A study of the grating periodicity of the nanostructures shows that the materials having a high refraction index allow LIPSS formation with a wide range of grating periodicities. Results also show High Spatial Frequency LIPSS formation with periodicities 3 to 8 times lower than the laser wavelength.
Tribological Behavior Analysis of the ISO 5832-1 Austenitic Stainless-Steel Treated by Optical Fiber Laser Used for Biomedical Applications
Authors: Macedo Marcelo De Matos , Cozza Ronaldo Câmara
Published: November 2019

The present work analyzed the influence of an optical fiber laser surface treatment process on the tribological behavior of the ISO 5832-1 austenitic stainless-steel, basing on the wear volume and friction coefficient. Specimen of this biomaterial were treated by alternating the laser frequency, in order to find out a condition that improves its tribological resistance. Ball-cratering micro-abrasive wear tests were carried out with a test ball of AISI 316L stainless-steel, used as counter-body, and an abrasive slurry prepared with abrasive particles of black silicon carbide (SiC) and distilled water. The micro-abrasive wear tests results indicated that: i) the hardness of the ISO 5832-1 austenitic stainless-steel increased as a function of the laser frequency, decreasing, consequently, the wear volume, as predicted by Archard’s Law; ii) the friction coefficient did not present a proportional behavior with the increase of the optical fiber laser frequency; iii) the best condition to improve the wear resistance of the ISO 5832-1 austenitic stainless-steel was obtained adopting an optical fiber laser frequency of 350 kHz, being reported the lower wear volume.
A method for measuring the in-plane compressive strength and the compression behavior of coating layers
Authors: PUHAKKA TEEMU , KAJANTO ISKO , PYKÄLÄINEN NINA
Published: November 2019

Cracking at the fold is a quality defect sometimes observed in coated paper and board. Although tensile and compressive stresses occur during folding, test methods to measure the compressive strength of a coating have not been available. Our objective was to develop a method to measure the compressive strength of a coating layer and to investigate how different mineral coatings behave under compression. We used the short-span compressive strength test (SCT) to measure the in-plane compressive strength of a free coating layer. Unsupported free coating films were prepared for the measurements. Results indicate that the SCT method was suitable for measuring the in-plane compressive strength of a coating layer. Coating color formulations containing different kaolin and calcium carbonate minerals were used to study the effect of pigment particles’ shape on the compressive and tensile strengths of coatings. Latices having two different glass transition temperatures were used. Results showed that pigment particle shape influenced the strength of a coating layer. Platy clay gave better strength than spherical or needle-shaped carbonate pigments. Compressive and tensile strength decreased as a function of the amount of calcium carbonate in the coating color, particularly with precipitated calcium carbonate. We also assessed the influence of styrene-butadiene binder on the compressive strength of the coating layer, which increased with the binder level. The compressive strength of the coating layer was about three times the tensile strength.
Effects of loblolly pine tree age and wood properties on linerboard-grade pulp yield and sheet properties: Part 1 - Effects on pulp yield
Authors: MCDONOUGH T.J. , COURCHENE C.E. , WHITE D.E. , SCHIMLECK L. , PETER G.
Published: November 2019

Results are reported on the relationships of loblolly pine tree age and wood characteristics and the yield of pulp obtained when the trees were chipped and pulped by the kraft process. Eighteen 13-year old and 18 22-year-old loblolly pine trees were selected to represent specified ranges of specific gravity and lignin content. The trees were further characterized by chemical analysis and near infrared spectroscopy before kraft pulping. The resulting pulps were characterized by measurements of yield and chemical analysis. Multiple regression analysis was used to identify wood characteristics that most influenced pulp yield and to derive equations relating pulp yield to tree age, specific gravity, and wood chemical composition. In addition, near-infrared spectroscopy calibrations were developed to allow prediction of pulp yield from analysis of wood. The results showed that wood specific gravity cannot be used to predict the yield of linerboard-grade pulp from trees of either age. The yield of pulp from 13-year-old trees can be predicted from the amounts of xylan and lignin present in the wood. The yield of pulp from 22-year-old trees decreased with increasing lignin content but was unrelated to xylan content. Thirteen-year-old trees had significantly higher xylan content and the excess xylan was lost during pulping. Regression equations were developed for estimating pulp yields from 13- and 22-year-old trees, given their xylan and lignin contents. Another equation derived from the combined data for trees of both age classes will be useful for predicting yields from trees of other ages, if it is assumed that the effect of tree age is linear.