bluuebunny/crossref_metadata_2025 huggingface dataset:
THE IMPACT OF AGRICULTURAL PERFORMANCE ON FOREIGN TRADE CONCENTRATION AND COMPETITIVENESS: EMPIRICAL EVIDENCE FROM ROMANIAN AGRICULTURE
Authors: Andrei Jean Vasile , Popescu Gheorghe H. , Nica Elvira , Chivu Luminita
Published: February 2020

Analysing the impact of agricultural performance on foreign trade concentration and competitiveness defines an important step in identifying the opportunities, challenges and proactive measures in designing a functional and marked based agricultural model. The scope of this study is to investigate the evolution of Romania’s the foreign trade competitiveness and its concentration on main destinations during 2007–2016. In this context, in the paper are identified and investigated some of the competitiveness’ mutations arisen from the Romania’s trade flows concentration and restructuration in relation with 26 of the European Union member states. It was used a unique dataset on agro -food trade output and concentration across EU countries to construct measures of trade competitiveness. The results obtained suggest the existence of a dual relationship of the Romanian agriculture competitiveness and its dependence on the EU economic area, by the concentration of the commercial relationships.
Insects identified by unqualified scientists: multiple “new” records from the Murmansk oblast of Russia are dismissed as false
Authors: Kozlov MV
Published: February 2020

A recently published book authored by six botanists (Rak NS, Goncharova OA, Poloskova EY, Litvinova SV, Zotova OE, Lipponen IN. 2018. Bioecological analysis of introducents of the family Rosaceae Juss. Kola Science Centre, Apatity, 87 pp.) reports information on 19 species of insects that are declared to damage woody Rosaceae plants in the central part of the Murmansk oblast of Russia. Examination of photographs published in this book revealed that 15 of these 19 species were identified incorrectly and that several of the illustrated species are unlikely to damage woody Rosaceae plants. The most striking examples are errors in determination at the order level: a syrphid fly (Diptera) identified as a leafcutter bee (Hymenoptera), and a sawfly (Hymenoptera) identified as a psyllid (Hemiptera). I provide correct identifications of the insects illustrated in the cited book in order to prevent the spread of erroneous information across future publications and databases.
The first gynandromorph of the Neotropical bee Megalopta amoena (Spinola, 1853) (Halictidae) with notes on its circadian rhythm
Authors: Krichilsky Erin , Vega-Hidalgo Álvaro , Hunter Kate , Kingwell Callum , Ritner Chelsey , Wcislo William , Smith Adam
Published: February 2020

Gynandromorphy is an anomaly that results in an organism phenotypically expressing both male and female characteristics. Here we describe the first gynandromorph of the bee species Megalopta amoena (Spinola, 1853) (Halictidae, Augochlorini) and the second record of this anomaly within the genus Megalopta. Additionally, we analyzed the bee’s circadian rhythm, which has never before been quantified for a gynandromorph. The gynandromorph showed a deviant activity pattern; it was intermediate between that of the male and female M. amoena. Our results imply that the brains of bilateral gynandromorphs may have mixed sex-specific signaling. Based on four days of recording, the gynandromorph circadian rhythm was shifted earlier in the day relative to the male and female M. amoena, and it exhibited intensity similar to the female.
Evidence-Based Nursing Education: Myth or Reality?
Authors: Ferguson Linda , Day Rene A.
Published: February 2020

This article explores the concept of evidence-based nursing education. Because nurse educators incorporate evidence-based practice as a basic tenet of their programs, they assume nursing education itself is evidence based. Nursing education has a body of knowledge on which nurse educators base teaching, educational strategies, and curricular designs, but most of this knowledge is tacit, experiential, and based on practice. This knowledge relates to the art of teaching in nursing and can warrant the practice of nurse educators. However, research is also necessary to demonstrate the effectiveness of teaching approaches and strategies. Nurse educators need to develop the science of nursing education through qualitative and quantitative research, to add to the tacit knowledge underpinning nursing education strategies. When the science of nursing education is adequately developed through rigorous research, we will truly be able to say that nursing education is evidence based. Until then, it may be only a myth.
Participatory Inquiry with a Colleague: An Innovative Faculty Development Process
Authors: Mahara M. Star , Jones Joanne A.
Published: February 2020

Clinical evaluation is central to the aims of nursing education; however, little has been written about the actual evaluative practices of nurse educators and the sources of influence on those practices. In this article, we describe our experience as co-investigators into the evaluation practices of one of us (J.A.J.) and overview some of the challenges and opportunities of participatory inquiry. We describe how J.A.J.'s involvement in this research project encouraged her to explore her evaluative practices in a meaningful way, which moved her to a place of deeper understanding about her work and transformed her as a nurse educator. As a result of this study, we are convinced of the necessity for a faculty development process whereby colleagues commit to a critical inquiry process focused on identifying each other's evaluative practices and sources of influence on those practices. In addition, schools of nursing can encourage faculty participation in peer development by adopting an expanded view of scholarship in which the disciplined examination of one's evaluative practices is accepted as evidence of the scholarship of teaching.
Application and Evaluation of a Caring Code in Clinical Nursing Education
Authors: Lee-Hsieh Jane , Kuo Chien-Lin , Tseng Hung-Fu
Published: February 2020

This study evaluated the effectiveness of the Caring Code, a tool for teaching caring to nursing students during clinical practice. An experimental, longitudinal design was used. A sample of 480 students from a 5-year junior nursing college program in Taiwan was randomly divided into experimental and control groups. Each member of the experimental group carried a copy of the Caring Code, the content of which was explained by the clinical instructors at the beginning of clinical practice, and about which reminders were provided weekly. A questionnaire was distributed to the patients during the nursing students' 1-year clinical practice, once prior to the implementation of the Caring Code and twice afterwards, to obtain quantitative data on the caring behaviors of the two student groups. Instructors and nursing students were interviewed for their experiences and perceptions of using the Caring Code. The Caring Code had a statistically significant positive effect on student caring behavior.
Isolation Followed by Integration: A Model for Development of a Separate Geriatric Course
Authors: Wallace Meredith , Lange Jean , Grossman Sheila
Published: February 2020

Because of the growing population of older adults in America, nursing faculty throughout the United States have been consistently challenged during the past decade to use the most appropriate methods to strengthen geriatric content in baccalaureate nursing programs. The question of whether to integrate content throughout the curriculum or offer a stand-alone geriatric nursing course has been explored extensively, but no ultimate conclusion has been found. With the support of a grant for geriatric curriculum integration from the John A. Hartford Foundation, one university began the journey to integrate geriatric nursing curriculum throughout all baccalaureate nursing courses. However, at a curriculum evaluation meeting held halfway through the grant period, faculty expressed the need to have concentrated content earlier in the program that could serve as a foundation on which to build geriatric knowledge. Faculty unanimously voted to create a geriatric nursing course to be offered to students during their second year of baccalaureate study.

Using the process of deductive reasoning, a model was built to guide the integration of geriatric content into the undergraduate curriculum. The geriatric curriculum integration grid was reviewed to determine which content should remain integrated and which content should be moved to the stand-alone course. The revised geriatric curriculum integration grid and new course syllabus were sent to a geriatric curriculum expert for review. The expert favorably reviewed the changes in curriculum integration and the new course syllabus, and met with faculty to help operationalize the geriatric content. Faculty currently embrace the belief that geriatric content and clinical experiences must be introduced early and integrated throughout the nursing curriculum to prepare nurses to compassionately meet the needs of an aging society.
Nurses' Agricultural Education in the Southeastern United States
Authors: Reed Deborah B. , Hoffman Carol , Westneat Susan C.
Published: February 2020

The number of nurses across the United States with expertise in agricultural health nursing is unknown, yet as many as 8,000 are needed. This article describes agricultural health content in nursing programs in the southeastern United States. Agriculture is primarily family based but ranks among the top three most hazardous industries in America. Nurses in the southeastern United States serve more than 541,000 farm families, more than a quarter of the nation's agricultural population.

A 15-item survey was mailed to 185 nursing schools located within 13 southeastern states. Information was requested about undergraduate and graduate curricula that included information about agricultural health and safety. Surveys were returned from 113 programs (61.1%). Schools with larger percentages of rural students were more likely to include mention of agricultural health; however, scant attention was given to any rurally focused content. In 27.4% of the schools, no mention of agricultural health issues was made, and 54.0% of nursing faculty who completed the survey were not aware of the need for nurses with agricultural health expertise. Results suggested that, when agricultural health topics were presented in class, student interest in the topic increased. Given the occupational hazards faced in agriculture and the region's economic dependence on agriculture, increased attention should be focused on agricultural health content within nursing programs.
The Effect of Teaching Method on Objective Test Scores: Problem-Based Learning Versus Lecture
Authors: Beers Geri W.
Published: February 2020

This study investigated the effect of teaching method on objective test scores of students in a school of nursing. The hypothesis stated there was a difference between objective test scores of students who were taught content on diabetes using problem-based learning (PBL) and students taught the same content using the traditional lecture method. Junior nursing students enrolled in the Adult Health I nursing course in the fall of 2001 were taught the diabetes content using lecture as the teaching method, while students enrolled in the same course in the spring of 2002 were taught the same content using PBL. A pretest and posttest were administered to both groups of students. Both the pretest and posttest scores of the two groups were compared using an independent
t
test, and no statistically significant difference was found in the scores of the two groups. The results of this study support the null hypothesis: that there is no difference in objective test scores based on teaching method (lecture versus PBL).
The Effect of Classroom Simulation on Nursing Students' Self-Efficacy Related to Health Teaching
Authors: Goldenberg Dolly , Andrusyszyn Mary-Anne , Iwasiw Carroll
Published: February 2020

The purpose of this descriptive study was to investigate the effect of classroom simulation on third-year baccalaureate nursing students' self-efficacy in health teaching. Bandura's self-efficacy model provided the conceptual framework. A nonprobability, convenience sample of 22 students completed the self-efficacy questionnaire before and after the simulation workshop sessions. Students' overall self-efficacy scores increased significantly (
p
= 0.001) following the two sessions of role-playing case studies, suggesting more perceived confidence in performing health teaching. Recommendations include continuing the use of simulation as a teaching-learning method, applying simulation as a strategy to enhance other learner behaviors, and cultivating faculty's use of simulation in their teaching.
Development and Testing of a Hyperlearning Model for Design of an Online Critical Care Course
Authors: Jeffries Pamela R.
Published: February 2020

Many U.S. colleges and universities are discovering innovative and exciting ways of using information technology to promote the process of teaching and learning and to extend education to new populations of students. Nurse educators in academia and service settings are developing interactive e-learning programs or courses to meet this need, and to either enhance practice concepts and basic skills or orient new associates to the clinical organization. In continuing education programs, students need flexibility and convenience to concurrently meet their personal and academic goals, and consumer demand for online instruction is increasing. The challenge is to prepare a comprehensive, high-quality, cost-effective e-learning course to meet educational standards and competencies.

To meet this challenge, an instructional design model, the Hyperlearning Model, was developed based on Chickering and Gamson's principles of best practices in undergraduate education, to guide the development of an online course for basic critical care content. In this article, I describe the creation and testing of an instructional design model for developing content in this online course.
Teaching Thinking and Reaching the Limits of Memorization: Enacting New Pedagogies
Authors: Ironside Pamela M.
Published: February 2020

Contemporary practice environments are complex and require students and new graduates to possess high-level thinking capabilities to ensure patient safety and quality of care. To achieve this goal, many nurse educators are exploring new pedagogies (critical, feminist, phenomenological, and postmodern) to teach students the practices of thinking that contemporary clinical situations demand. These new pedagogies offer alternatives to the predominant use of conventional pedagogies, which emphasize students' memorization of content and its subsequent application in practice situations. This study, using Heideggerian hermeneutics, documents how teachers are using new pedagogies in ways that shift their attention to teaching thinking and away from devising strategies to help students memorize and apply more content. One of the themes that emerged from this study, Teaching Thinking and Reaching the Limits of Memorization, and two subthemes, Thinking AS Memorization and Recall, and Beyond Memorization: Thinking in Context are presented.
HIPAA and Nursing Education: How to Teach in a Paranoid Health Care Environment
Authors: Wimberley Paige , Isaacson Julie , Walden Debra , Wiggins Nonie , Miller Renee , Stacy Annette
Published: February 2020

Nursing faculty are affected by the paranoia that exists today as health care institutions individually interpret the Privacy Rule contained within the Health Insurance Portability and Accountability Act of 1996 (HIPAA). Because nursing students and faculty have been thrust into this environment, faculty must understand the Privacy Rule to ensure that both they and their students are in compliance. In this article, we provide a framework for faculty as they take a proactive leadership stance in relation to HIPAA. A multifaceted approach is necessary as faculty begin to navigate the challenges imposed by HIPAA. Strategies discussed include informing faculty and educating students, while developing a value system related to confidentiality issues and creating a safe environment for sharing information.
Kuwaiti High School Students' Perceptions of Nursing as a Profession: Implications for Nursing Education and Practice
Authors: Al-Kandari Fatimah H. , Lew Irene
Published: February 2020

The shortage of nurses in Kuwait is attributed to low production of indigenous nurses, resignation and emigration of foreign nurses, and expansion of health care facilities. This study explored Kuwaiti high school students' perceptions of nursing as a profession, their sources of information about nursing, and factors that affected their choice of nursing as a future career. Questionnaires from 289 students attending seven all-female high schools in Kuwait were analyzed. The results revealed that all of the participants were knowledgeable about the functional aspects of the nursing profession, and 35% of them received this information through contact with nurses during hospital visits. However, only 19% indicated they might consider nursing as a future career. The implications of the study for nursing education and practice, and strategies to attract and retain indigenous high school graduates into nursing programs in Kuwait are discussed.
A Preliminary Study of a Healthy-Lifestyle-Promoting Program for Nursing Students in Taiwan
Authors: Yeh Lily , Chen Ching-Huey , Wang Chih-Jen , Wen Miin-Jye , Fetzer Susan J.
Published: February 2020

This pilot study evaluated the effects of a healthy-lifestyle-promoting program, taught as part of an undergraduate community health nursing course, on the physical fitness and health choices of 42 Taiwanese nursing students. A convenience sample provided quantitative indexes of physical fitness and lifestyle before and after the course. Qualitative data, in the form of student diaries, were also analyzed. The findings indicated a positive change in physical fitness, exercise, and nutrition as a result of the program. Including lifestyle programs in nursing education may help promote the long-term health of future nurses who will serve as positive patient role models.
Features of the Conduction Mechanism through an Indium Antimonide Quantum Dot in the Analysis of Tunneling Current-Voltage Characteristics
Authors: Gavrikov Maksim Vladimirovich , Kabanov Vladimir Fedorovich , Mikhailov Aleksandr Ivanovich
Published: February 2020

The model representations of the mechanism of electronic conductivity through InSb nanoparticle was formulated and analyzed in accordance with the theory of field emission. Based on the analysis of tunneling current-voltage characteristics of various methods of calculation obtained a consistent value of characteristic size InSb nanoparticles in the range from 18 to 22 nm. Analysis tunneling current-voltage characteristics (dark and light (stationary light)) allowed us to evaluate the legitimacy of the formulated model representations.
The Influence of Structural and Phase Changes on the Thermoelectric Properties of PbTe Doped with CdSe
Authors: Kalmykov Rustam , Karmokov Ahmed M. , Ansokova Zaira
Published: February 2020

In this article, the influence of structural and phase changes on the thermoelectric properties of PbTe doped with CdSe compounds of various molar concentrations were studied. The research showed that with a minimum value of the lattice parameter of the formed new phases in the PbTe matrix (at an impurity concentration of 0.5 mol%), the specific electrical conductivity and thermoEMF coefficient have a minimum value. A further increase in concentration leads to an increase in these parameters.
Galvanomagnetic Properties of Cd3As2- MnAs (MnAs - 20%) System in Transverse Magnetic Field at Hydrostatic Pressure up to 9 Gpa
Authors: Saypulaeva Louisa A. , Abdulvagidov Shapiullah B. , Gadjialiev Magomed M. , Alibekov Abdulabek G. , Abakarova Naida S. , Melnikova Nina V. , Zakhvalinsky Vladimir S. , Ril’ Aleksey I. , Marenkin Sergey V.
Published: February 2020

The Cd3As2+MnAs composite with 20 mole % of MnAs has been studied complexly in a wide ranges of temperatures, pressures and magnetic fields. Negative magnetic resistance has been found in the sample. This anomalous behavior is considered as a result of changes in tunneling processes due to reduce of distance between magnetic moment of ferromagnetic and structural transitions caused by pressure.
PZT Thin Films on Silicon Substrates: Formation and Research of Properties
Authors: Petrov Victor V. , Varzarev Yuriy N. , Kamentsev Anton S. , Rozhko Andrey A. , Pakhomova Oksana A.
Published: February 2020

In this paper, we consider the technological features of the formation of thin ferroelectric films of lead zirconate titanate (PZT) by the method of plasma high-frequency reactive sputtering. The crystal structure, morphology and elemental composition of films deposited on silicon and oxidized silicon substrates are investigated. It is shown that the obtained PZT films have a perovskite structure and are polycrystalline with a predominant crystallite growth in the (110) direction. An automated test bench has been designed and manufactured for measuring the electrophysical parameters of ferroelectric films. The measured CV characteristics of the Ni/PZT/Si structure show the hysteresis caused by the polarization of the PZT film. It is noted that the asymmetry of the dependence of the spontaneous polarization on the applied voltage can be caused by the presence of surface states at the PZT/Si interface.
Study of Structure and Composition of Lead Sulfide Nanostructured Films Doped by Cadmium and Iodine Ions
Authors: Kutyavina Anastasiya D. , Maskaeva Larisa N. , Voronin Vladimir I. , Markov Vyacheslav F.
Published: February 2020

Lead sulfide films doped with cadmium and iodine ions were obtained by chemical bath deposition from the reaction mixture with thiourea that have thickness of up to 300 nm. An increase in cadmium iodide in the reactor from 5∙10-5 to 5∙10-3 mol/l is accompanied by a decrease in the period of the B1 cubic crystal lattice (space group ) from 0.59368 to 0.59355 nm, due to the replacement of Pb2+ ions in the PbS crystal lattice by a smaller size of ion Cd2+. The cadmium content in the synthesized layers varied from 0.4 to 2.8 at.% with a constant iodine concentration of 1.7–1.9 at.%. An electron microscopic study of the structure showed a decrease in the average crystallite size from 260 nm to 80 nm.
Study of Desorption Products under Laser Irradiation of the Surface of Organic Films
Authors: Turiev Anatolij M. , Tvauri Inga V. , Shanaeva Arina T.
Published: February 2020

The paper presents the results of mass spectrometric studies of laser-stimulated desorption from the surface of thin films based on organic copper phthalocyanine molecules with peripheral substituents on gallium arsenide substrates. Thin films (30-80 nm) of copper phthalocyanine with peripheral substituents in this regard are studied for the first time. The composition of particles desorbed from the surface of CuPc and CuPcF16 films by laser radiation of various wavelengths of 532 nm and 1.06 μm with a pulse duration of 10 ns was studied. The identification of the main fragments of molecules present in the desorption stream was carried out. It was shown that under the action of laser radiation, the surface is leveled and the films are fragmented, followed by desorption of molecular fragments.
The Relationship between Entropy and the Reliability Function in Application of Physical and Statistical Approach to Nanosystems
Authors: Kozhevnikov Vladislav Sergeevich , Matyushkin Igor Valerievich , Chernyaev Nikolay Vladimirovich
Published: February 2020

The paper considers application of the physical and statistical approach to the issue of nanosystems reliability. A general method of solving the main equation in this approach is suggested and the solution in quadratures is obtained in one-dimensional stationary case. It is used to study the behaviour of entropy and the reliability function under certain assumptions. The cases of constant, linear, and quadratic degradation rates are analysed. In the first two cases the results correspond to physical intuition while in the last case (quadratic rate) the formal solution demonstrates counterintuitive behaviour. Numerical correlations between the distribution entropy dynamics and the reliability function are given.
DISCOVERY OF TYPE 3 VON WILLEBRAND DISEASE IN A COHORT OF PATIENTS WITH SUSPECTED HEMOPHILIA A IN CÔTE D’IVOIRE
Authors: Adjambri Adia Eusèbe , Bouvier Sylvie , N'guessan Roseline , N’draman-Donou Emma , Yayo-Ayé Mireille , Meledje Marie-France , Adjé Missa Louis , Sawadogo Duni
Published: February 2020

Abstract

Aim : Type 3 von Willebrand disease (VWD) is the most severe form of VWD, characterized by a near-total absence of von Willebrand factor (vWF) leading to a huge deficiency in plasmatic factor VIII (FVIII). VWD may be confused with hemophilia A, sometimes leading to misdiagnosis. The purpose of this work was to finalize the biological diagnosis of patients with FVIII activity deficiency in Abidjan, in order to guide the best type of management. Methods: We conducted a cross-sectional descriptive study from June 2018 to April 2019. Forty-nine patients, all of whom had lower FVIII levels or had been referred for bleeding disorder, were monitored in the clinical hematology service. Pro-coagulant activity of coagulation factors was performed in Abidjan. The assays for von Willebrand antigen and activity were performed at Nîmes University Hospital in France. Results: The mean age of patients was 13.8 years (1 – 65) and 86% were Ivorian. FVIII deficiency was discovered during a biological checkup, circumcision or post-traumatic bleeding, in 33%, 31% and 29% respectively. The FVIII level of patients was classified as severe (89.8%), moderate (8.2%) and mild (2%). Only one patient had a quantitative deficiency of von Willebrand factor (vWF: Ag <3%) with undetectable von Willebrand factor activity (vWF: Ac) and an FVIII level <1%. Conclusion: Not all of the constitutive deficits of FVIII are hemophilia A. It was very important to assess the Willebrand factor of these patients followed in Côte d'Ivoire for whom hemophilia A had been suspected.
Table of Contents Vol 43, No 1 (2019)
Authors: Office Editorial
Published: February 2020

No abstract available.
Построение точных решений задачи о движении жидкости со свободной границей с использованием бесконечных систем дифференциальных уравнений
Authors: Karabut E A , Zhuravleva Elena Nikolaevna
Published: February 2020

Рассматривается известная задача гидродинамики о плоском потенциальном движении идеальной несжимаемой жидкости со свободной границей в отсутствие капиллярности. Предложен способ нахождения точных решений, основанный на сведении краевых задач к системам обыкновенных дифференциальных уравнений. Найдены два примера течений: стационарное движение тяжелой жидкости над ровным дном и нестационарное движение жидкости, первоначально занимающей клин.
Интегрируемые эволюционные системы геометрического типа
Authors: Sokolov Vladimir Vyacheslavovich
Published: February 2020

Приведены необходимые условия интегрируемости многокомпонентных эволюционных систем третьего порядка геометрического типа. Для рассмотренных примеров определяющее систему пространство аффинной связности в случае связности без кручения оказалось симметрическим, а в случае связности с ненулевым кручением - пространством, порожденным лупой Бола.
Спектр Филлипса и модель диссипации ветрового волнения
Authors: Badulin Sergei Ilyich , Zakharov Vladimir Evgen'evich
Published: February 2020

Рассматривается обобщение кинетического уравнения Хассельманна, предложенное Ньюэллом и Захаровым в 2008 г. Новое уравнение учитывает не только резонансные четырехволновые взаимодействия, но и диссипацию, связанную с обрушением волн. В уравнение вводится функция диссипации, зависящая от потока энергии по спектру. Эта функция определена с точностью до функционального параметра, оптимальный выбор которого должен быть сделан по результатам сравнения с экспериментом. Кинетическое уравнение, снабженное такой функцией диссипации, должно описывать обычно наблюдаемый в экспериментах переход от спектра Колмогорова-Захарова $E(\omega)\sim\omega^{-4}$ к спектру Филлипса $E(\omega)\sim\omega^{-5}$. Версию функции диссипации, выраженную в терминах спектра энергии, можно использовать в задачах численного моделирования и прогноза морского волнения.
Learning Neighbourhoods
Authors: Ó Tuama Séamus
Published: February 2020

Cork Learning City is piloting a programme called Learning Neighbourhoods. While it is an evolving model, it has potential for animating a culture of learning that is community based and with the prospect of giving ordinary citizens a chance to contribute both to broader issues at city level as well as to significant global debates of the day. The Learning Neighbourhood concept is essentially about collaboration and coalition building, extending networks and prioritising learning (horizontally and vertically) among and between generations and the positive leverage of all and every resource to enhance the process. It is a community building concept articulated through learning. Learning is not something abstract and removed from the practicalities of living. Learning encapsulates the four types of capital, human, social, identity, and cultural; it also extends to capacity building, resilience, and the challenges of the sustainable development goals (SDGs). This paper contextualises the theory and practice informing Learning Neighbourhoods.
Islamic Republic of Afghanistan
Authors:   International Monetary Fund. Statistics Dept.
Published: February 2020

A technical assistance (TA) mission on external sector statistics (ESS) was conducted in Amman, Jordan, during March 31–April 10, 2019, for the Da Afghanistan Bank (DAB).1 The mission took place at the request of the DAB and with strong support of the IMF’s Middle East and Central Asia Department. This mission is part of the Middle East Regional Technical Assistance Center (METAC) work program. The mission objectives were to assist the DAB in improving the quality of the balance of payments and international investment position (IIP) statistics. The mission took stock of recent improvements in the ESS compilation practices and commended the DAB’s Monetary Policy Department (MPD) for achieving most of the 2018 TA recommendations. The list of officials met by the mission is shown in Appendix I.
Roll vortices induce new particle formation bursts in the planetary boundary layer
Authors: Lampilahti Janne , Manninen Hanna Elina , Leino Katri , Väänänen Riikka , Manninen Antti , Buenrostro Mazon Stephany , Nieminen Tuomo , Leskinen Matti , Enroth Joonas , Bister Marja , Zilitinkevich Sergej , Kangasluoma Juha , Järvinen Heikki , Kerminen Veli-Matti , Petäjä Tuukka , Kulmala Markku
Published: February 2020

Abstract. Recent studies have shown the importance of new particle formation (NPF) to global cloud concensation nuclei (CCN) production, as well as to air pollution in megacities. In addition to the necessary presence of low-volatility vapors that can form the new aerosol particles, both numerical and observational studies have shown that the dynamics of the planetary boundary layer (BL) plays an important role in NPF. Evidence from field observations suggests that roll vortices might be favorable for inducing NPF in a convective BL. However, direct observations and estimates on the potential importance of this phenomenon to the production of new aerosol particles are lacking. Here we show that rolls frequently induce NPF bursts along the horizontal circulations, and that the small clusters and particles originating from these bursts grow in size similar to particles typically ascribed to regional-scale atmospheric NPF. We outline a method to identify roll-induced NPF from measurements and, based on the collected data, estimate the impact of roll vortices on the overall aerosol particle production due to NPF at a boreal forest site (83 ± 34 % and 26 ± 8 % overall enhancement in particle formation for 3-nm and 10-nm particles respectively). We conclude that the formation of roll vortices should be taken into account when estimating particle number budgets in the atmospheric BL.
An EARLINET Early Warning System for atmospheric aerosol aviation hazards
Authors: Papagiannopoulos Nikolaos , D'Amico Giuseppe , Gialitaki Anna , Ajtai Nicolae , Alados-Arboledas Lucas , Amodeo Aldo , Amiridis Vassilis , Baars Holger , Balis Dimitris , Binietoglou Ioannis , Comerón Adolfo , Dionisi Davide , Falconieri Alfredo , Fréville Patrick , Kampouri Anna , Mattis Inna , Mijić Zoran , Molero Francisco , Papayannis Alex , Pappalardo Gelsomina , Rodríguez-Gómez Alejandro , Solomos Stavros , Mona Lucia
Published: February 2020

Abstract. A stand-alone lidar-based method for detecting airborne hazards for aviation in near-real-time (NRT) is presented. A polarization lidar allows for the identification of irregular-shaped particles such as volcanic dust and desert dust. The Single Calculus Chain (SCC) of the European Aerosol Lidar Network (EARLINET) delivers high resolution pre-processed data: the calibrated total attenuated backscatter and the calibrated volume linear depolarization ratio time series. From these calibrated lidar signals, the particle backscatter coefficient and the particle depolarization ratio can be derived in temporally-high resolution, and thus provide the basis of the NRT Early Warning System (EWS). In particular, an iterative method for the retrieval of the particle backscatter is implemented. This improved capability was designed as a pilot that will produce alerts for imminent threats for aviation. The method is applied to data during two diverse aerosol scenarios: first, a record breaking desert dust intrusion in March 2018 over Finokalia, Greece, and, second, an intrusion of volcanic particles originating from Mount Etna in June 2019 over Antikythera, Greece. Additionally, a devoted observational period including several EARLINET lidar systems demonstrates the network's preparedness to offer insight into natural hazards that affect the aviation sector.
Determination of the mixing ratio of a flowing gas mixture with self-actuated microcantilevers
Authors: Stauffenberg Jaqueline , Durstewitz Steve , Hofmann Martin , Ivanov Tzvetan , Holz Mathias , Ehrhardt Waleed , Riegel Wolf-Ulrich , Zöllner Jens-Peter , Manske Eberhard , Rangelow Ivo
Published: February 2020

Abstract. Microcantilevers offer a wide range of applications in sensor and measurement technology. In this work cantilever sensors are used as flow
sensors. Most conventional flow sensors are often only calibrated for one type of gas and allow an analysis of gas mixtures only with increased
effort. The sensor used here is a cantilever positioned vertically in the flow channel. It is possible to operate the sensor in dynamic and static
mode. In the dynamic mode the cantilever is oscillating. Resonance frequency, resonance amplitude and phase are measured. In static mode, the
bending of the cantilever is registered. The combination of the modes enables the different measured variables to be determined simultaneously. A flow
influences the movement behaviour of the sensor, which allows the flow velocity to be deduced. In addition to determining the flow velocity, it is also
possible to detect different types of gas. Each medium has certain properties (density and viscosity) which have different effects on the bending of
the sensor. As a result, it is possible to measure the mixing ratio of a known binary gas mixture and their flow velocity simultaneously with
a single sensor. In this paper this is investigated using the example of the air–carbon-dioxide mixture.
Norwegian Atlantic Slope Current along the Lofoten Escarpment
Authors: Fer Ilker , Bosse Anthony , Dugstad Johannes
Published: February 2020

Abstract. Observations from moored instruments are analyzed to describe the Norwegian Atlantic Slope Current at the Lofoten Escarpment. The data set covers a 14-month period from June 2016 to September 2017, and resolves the core of the current from 200 to 650 m depth, between the 650 m and 1500 m isobaths. The along-slope current, vertically averaged between 200 and 600 m depth has an annual cycle amplitude of 0.1 m s−1 with strongest currents in winter, and a temporal average of 0.15 m s−1. Higher frequency variability is characterized by fluctuations that reach 0.8 m s−1, lasting for 1 to 2 weeks, and extend as deep as 600 m. In contrast to observations in Svinøy, the slope current is not barotropic and varies strongly with depth (a shear of 0.05 to 0.1 m s−1 per 100 m in all seasons). Within the limitations of the data, the average volume transport is estimated at 2.8 ± 1.8 Sv (1 Sv = 106 m3 s−1), with summer and winter averages of 2.3 and 4.0 Sv, respectively. The largest transport is associated with the high temperature classes (> 7 °C) in all seasons, with the largest values of both transport and temperature in winter. Calculations of the barotropic and baroclinic conversion rates using the moorings are supplemented by results from a high resolution numerical model. While the conversion from mean to eddy kinetic energy (e.g. barotropic instability) is likely negligible over the Lofoten Escarpment, the baroclinic conversion from mean potential energy into eddy kinetic energy (e.g. baroclinic instability), can be substantial with volume-averaged values of (1–2) × 10−4 W m−3.
Explicitando dados e analisando tendências da pesquisa em Educação em Ciências no Brasil: uma análise da produção científica disseminada no ENPEC
Authors: Slongo Iône Inês Pinsson , Lorenzetti Leonir , Garvão Marzane
Published: February 2020

O estudo analisa a pesquisa em Educação em Ciências disseminada no Encontro Nacional de Pesquisa em Educação em Ciências. Caracteriza-se como pesquisa bibliográfica, do tipo Estado do Conhecimento, que identifica, sistematiza e analisa as comunicações orais de mais quatro edições do ENPEC de 2007 a 2013. Ao cotejar esses dados com as cinco primeiras edições, de 1997 a 2005, observou-se que a produção científica da área segue em ascensão, mostrando a permanência de algumas tendências ao longo de todo o período de 1997 a 2013: o predomínio de estudos sobre o ensino médio, superior e anos finais do fundamental; a concentração de estudos com foco em Recursos didáticos, Formação de professores e Conteúdo-método e de estudos que levantam dados com alunos e professores dos segmentos educacionais apontados. A emergência de novos focos de interesse como Pesquisa sobre a produção acadêmica, Educação Inclusiva e Políticas Públicas. Este balanço de identificação, sistematização e análise do já produzido na área da Educação em Ciências no Brasil, oferece dados que possibilitam fundamentar reflexões problematizadoras sobre o já realizado pela área, bem como, alguns limites evidentes, que poderão ser assumidos como importantes desafios que se colocam para a pesquisa em Educação em Ciências.
A avaliação das organizações educativas e a regulação pelo discurso gestionário
Authors: Fonseca Dora Maria Ramos
Published: February 2020

Os documentos orientadores para a gestão educacional produzidos pelas entidades supranacionais espelham a adoção de um discurso de natureza gestionária com a tónica na comparabilidade e na competitividade e refletem, ainda, a assunção da educação como instrumento ao serviço do mundo económico. Regista-se uma propagação do ideário neoliberal no campo educativo traduzido na expansão das ideias de mercado ou quase-mercado educacional introduzindo na esfera educativa uma mudança discursiva que se traduz em um certo afastamento do discurso democratizante e em uma aproximação ao discurso gestionário. Este artigo tem como centro de análise os processos de avaliação das organizações educativas enquanto mecanismos reguladores da gestão educacional. Importa perceber, a partir dos estudos que temos vindo a desenvolver sobre a temática, de como as construções discursivas presentes nos documentos normativos e nos instrumentos de avaliação contribuem para a forte regulação no sentido da mercantilização da educação.
A prática docente e as relações de gênero e sexualidades: conversando com professoras e professores
Authors: Ferrari Anderson , Gomes Claudete Imaculada de Souza , Berto Cláudio Magno Gomes
Published: February 2020

Qual tem sido o trabalho com gênero e sexualidade realizado por professores e professoras em 3 escolas na cidade de Juiz de Fora? Essa é a pergunta foco que direciona as análises neste artigo em torno das questões surgidas em uma pesquisa de mestrado realizada entre os anos de 2015-2016. Como gênero e sexualidade são organizadores sociais, resultado de construção histórica e cultural, ouvir e dialogar com professoras e professores é reforçar a ideia de que escolas não são essências, mas fruto de relações entre indivíduos e sociedade. Nesse sentido, estamos assumindo a perspectiva teórico-metodológica pós-estruturalista, influenciada pelos estudos foucaultianos, principalmente a partir da noção de problematização, vinculada à história do pensamento, que, não se propondo a oferecer soluções, proporciona a oportunidade de ampliar o debate sobre pesquisa no campo educacional. Como processo metodológico aplicamos um questionário nas escolas da cidade para identificar que professoras e professores assumiam fazer um trabalho com gênero e sexualidade. Dos 36 professores e professoras que assumiram tal trabalho, somente 5 aceitaram participar dos grupos focais em que discutimos as respostas ao questionário. São com essas falas construídas nos grupos focais que vamos trabalhar. Dois aspectos aparecem como resultados das conversas. O primeiro é a evidencia de que as professoras e os professores adquirem e colocam em prática conhecimentos que se referem às relações de gênero e sexualidade e conseguem fazer articulações com o seu fazer docente. O segundo é a demonstração de que as escolas que trabalham realizam um trabalho com gênero e sexualidade.
Foreign Portfolio Investment Response to Monetary Policy Decisions in Nigeria: A Toda-Yamamoto Approach
Authors: Jelilov Gylych , Celik Bilal , Adamu Yusuf
Published: February 2020

This paper examined the response of foreign portfolio investment to Monetary Policy decisions of the Central Bank of Nigeria using monthly data spanning January 2007 to December 2018. The study adopted the Toda-Yamamoto Causality model and Generalized Impulse Response Function for analysis. The results showed that changes in monetary policy stance could only impact the behavior of foreign portfolio investment with 6-month lag and with marginal impact. This implies that monetary policy could still be effective even if the CBN decides to lose policy stance without losing significant capital flight. The conclusion from the findings is that monetary policy is just a signaling instrument for portfolio investors in Nigeria because it influences foreign portfolio investment through the Treasury bill rate rather than through MPR and CRR. The marginal response of investment due to changes in policy rate from the GIRF validate the TY results by indicating that monetary policy rate changes on its own may not be what investors are concern about, rather the expectation of the rates future path. The cash reserve ratio as a monetary policy tool does not seem to exert any impact on foreign portfolio investment.
Application of Contextual Teaching and Learning Approach on Statistics Material Against Student Results
Authors: Pangemanan Aaltje
Published: February 2020

Based on empirical data, student learning outcomes on statistical material are not in accordance with the expectations of teachers so it is necessary to apply the Contextual Teaching and Learning (CTL) approach. A CTL implementation can help students to understand concepts and skilled resolve issues. The research purpose is to see whether the students learning outcomes on statistics materials that are taught using the CLT approach are better than conventional approaches. The methods used are experimental studies and the data will be obtained from the pre-test and post-test learning outcomes. The population are the entire class IX student while samples taken by random sampling techniques, two classes, namely as an experimental class and control. Research design is a Non-equivalent Control Group Design. Based on the results with two average difference tests on T-Test statistics were obtained that student learning outcomes in experimental class is higher than the controls. This means learning by applying the CTL approach can improve learning outcomes and the benefits for mathematics teachers gained insight into the CTL learning process.
Classificação de filmes: uma abordagem utilizando o LIWC
Authors: Tavares Rian , Guedes Gustavo Paiva
Published: February 2020

Esse artigo tem o objetivo de apresentar uma abordagem para classificação de filmes com base em suas legendas e informações extraídas de redes sociais. A metodologia desenvolvida utiliza o programa LIWC, que contém um dicionário de palavras que permite extrair características linguísticas, psicológicas e sociais de textos. Os resultados preliminares foram bastante satisfatórios, indicando direções promissoras para esse trabalho.
Um Método de Avaliação da Importância de Medidas para Predição da Nota de um Filme
Authors: Magalhães Junior Gilvan V. , Santos Roney L. de S. , Moura Raimundo S.
Published: February 2020

Analisar informações sobre filmes antes de assisti-los é uma prática comum realizada pelo público. Entretanto, a grande quantidade de reviews nas Redes Sociais Online (RSO) e em sites da Web torna essa tarefa quase impossível. Como uma possível solução para tal problema, alguns sites utilizam filtros baseados nas notas dadas pelos usuários em seus reviews. No entanto, essa prática pode resultar em usuários utilizando as notas como um artifício para obter destaque. Este trabalho propõe um método automático para analisar a importância de medidas a partir dos reviews com a intenção de predizer a nota dos usuários. Realizou-se um experimento com cinco filmes de gêneros diferentes e conjuntos de reviews definidos por três limiares. O experimento mostrou que os melhores resultados foram obtidos com o limiar 0,5 e as medidas de maior importância foram: quantidade de sentenças, quantidade de críticas e corretude do review.
Construção e Análise das Redes Sociais de Personagens dos Filmes da Franquia O Senhor dos Anéis
Authors: Aires Victoria Patrícia , Martins Paulo Rodrigo , Nakamura Fabiola
Published: February 2020

Este artigo tem como foco as redes de personagens, que são um tipo de rede social, apresentando propriedades de redes complexas. Para construir a rede de personagens de um filme, uma estratégia é usar o script do mesmo, que contém informações como o início de uma cena, os personagens que aparecem e diálogos. Em geral, a construção da rede social leva em conta apenas os personagens que possuem falas em cada cena. Neste trabalho, apresentamos uma metodologia que leva em consideração também personagens citados ou que apenas aparecem nas cenas. Utilizamos os filmes da franquia O Senhor dos Anéis para a aplicação da metodologia, construindo a rede de personagens e posteriormente analisando, respondendo quem são os protagonistas de acordo com três medidas de centralidade: grau ponderado, intermediação e PageRank.