bluuebunny/crossref_metadata_2025 huggingface dataset:
An Investigation of Integrated and Closely Sequenced Form-Focused Instruction
Authors: Ashwell Tim
Published: February 2020

In this study the timing issue in form-focused instruction (FFI) was investigated from a practical pedagogical perspective by comparing one instructional procedure that integrated FFI into a communicative task and one that provided FFI following a task in a closely sequenced fashion. Learners’ production accuracy on two target forms—situational-the and experiential present perfect—was measured using two pretests and two posttests that imposed pressured and unpressured performance conditions. On situational-the, the only significant mean accuracy gain was recorded by the integrated procedure learners under unpressured test conditions, a gain that was significantly different to that made by the sequenced FFI group. On experiential present perfect, only the gains in production accuracy made by the integrated FFI treatment group were significantly larger than those made by a comparison group. The results challenge Spada and Lightbown’s (2008) assumptions about which type of FFI might be more effective for which type of grammatical language feature by showing that the procedure incorporating integrated FFI was more effective irrespective of language feature type and that the type of knowledge affected depends on target form.

本研究は、教育現場の観点から見た文法指導（FFI）のタイミングについて、コミュニカティブなタスクに組み込んだFFIと、コミュニカティブなタスクの直後に配置した2種類の方法を比較検討したものである。指導の前後に負荷ありと負荷なしのスピーキングテストを実施し、2つの文法項目（定冠詞theと経験の現在完了形）の正確さを測定した。定冠詞の使用については、負荷のないテストにおいて組み込み型指導法のグループにのみスコアの上昇が見られた。経験を表す現在完了においては、組み込み型指導法のスコア上昇のみが対照群と比べて有意に大きかった。本研究の結果から、文法項目の種類にかかわらず、コミュニカティブなタスクの直後に配置した文法指導よりもタスクに組み込んだ文法指導の方が効果的であることが明らかになった。よって、Spada and Lightbown (2008) の、文法項目の特徴により、異なるという仮定は議論の余地があると言える。
KMT-2016-BLG-1836Lb: A Super-Jovian Planet from a High-cadence Microlensing Field
Authors: Yang Hongjing , Zhang Xiangyu , Hwang Kyu-Ha , Zang Weicheng , Gould Andrew , Wang Tianshu , Mao Shude , Albrow Michael D. , Chung Sun-Ju , Han Cheongho , Jung Youn Kil , Ryu Yoon-Hyun , Shin In-Gu , Shvartzvald Yossi , Yee Jennifer C. , Zhu Wei , Penny Matthew T. , Fouqué Pascal , Cha Sang-Mok , Kim Dong-Jin , Kim Hyoun-Woo , Kim Seung-Lee , Lee Chung-Uk , Lee Dong-Joo , Lee Yongseok , Park Byeong-Gon , Pogge Richard W.
Published: February 2020

We report the discovery of a super-Jovian planet in the microlensing event KMT-2016-BLG-1836, which was found by the Korea Microlensing Telescope Network (KMTNet) high-cadence observations (

). The planet–host mass ratio q ∼ 0.004. A Bayesian analysis indicates that the planetary system is composed of a super-Jovian

planet orbiting an M or K dwarf,

, at a distance of

kpc. The projected planet–host separation is

au, implying that the planet is located beyond the snow line of the host star. Future high-resolution images can potentially strongly constrain the lens brightness and thus the mass and distance of the planetary system. Without considering detailed detection efficiency, selection, or publication biases, we find a potential mass-ratio desert at −3.7 ≲ log q ≲ −3.0 for the 31 published KMTNet planets.
The Presupernova Core Mass–Radius Relation of Massive Stars: Understanding Its Formation and Evolution
Authors: Chieffi Alessandro , Limongi Marco
Published: February 2020

We present a fine grid of solar metallicity models of massive stars (320 in the range 12 ≤ M(

) ≤ 27.95), extending from the main sequence up to the onset of the collapse, in order to quantitatively determine how their compactness ξ
2.5, defined by O’Connor & Ott, scales with the carbon–oxygen core mass at the beginning of core collapse. We find a well defined, nonmonotonic (but not scattered) trend of the compactness with the carbon–oxygen core mass that is strictly (and mainly) correlated to the behavior, i.e., birth, growth, and disappearance, of the various carbon convective episodes that follow one another during the advanced evolutionary phases. Though both the mass size of the carbon–oxygen core and the amount of 12C left by the central He burning play a major role in sculpting the final mass–radius relation, it is the abundance of 12C that is ultimately responsible for the final degree of compactness of a star, because it controls the ability of the carbon-burning shell to advance in mass before the final collapse.
Clinical Efficacy and Safety in Telbivudine- or Tenofovir-Treated Hepatitis B e Antigen-Positive Pregnant Women
Authors: Deng Haohui , Liang Shuzhen , Xu Min , Zhuo Li , Gao Hongbo , Chen Keng , Shi Yuming , Li Huihui , Jiao Qian , Lin Liansheng , Lei Yan , Liu Huiyuan
Published: February 2020

Background

Telbivudine (LdT) and tenofovir (TDF) are widely used in pregnant women to prevent vertical transmission; however, limited data are available on the differences in clinical efficacy and safety between the two drugs.

Methods

A total of 307 hepatitis B e antigen (HBeAg)-positive pregnant women with complete follow-up data were enrolled, the patients with alanine aminotransferase (ALT) levels <1xULN at baseline were enrolled to cohort 1 for treatment from 28 ±4 weeks gestation to delivery, while ALT levels >1xULN at baseline were enrolled to cohort 2 for treatment from 28 ±4 weeks gestation and continued after delivery. The clinical efficacy and safety was compared in LdT- and TDF-treated patients. In addition, 32 patients in cohort 1 were analysed for nucleoside analogue (NA)-related resistance mutations at baseline and after delivery.

Results

The results showed that HBV DNA levels were significantly lower at delivery than at baseline ( P<0.001), but the decreases in HBV DNA, ALT, total bilirubin and total bile acid levels did not differ between the LdT- and TDF-treated patients at different time points ( P>0.05) in the two cohorts. However, gastrointestinal adverse effects (vomiting) occurred more frequently in TDF-treated than LdT-treated patients (6.6% versus 0.0%; P=0.001). The results of NA-related resistance mutations analysis in cohort 1 revealed that short-term LdT or TDF treatment did not significantly change the NA-related resistance mutations ( P>0.05).

Conclusions

This study revealed that the clinical efficacy in LdT- or TDF-treated HBeAg-positive Chinese pregnant women is similar, and gastrointestinal adverse effects occurred more frequently in TDF-treated patients.
Four new species of the primitively segmented spider genus Qiongthela from Hainan Island, China (Mesothelae, Liphistiidae)
Authors: Yu Li , Liu Fengxiang , Zhang Zengtao , Wang Yan , Li Daiqin , Xu Xin
Published: February 2020

The primitively segmented spider genus Qiongthela Xu & Kuntner, 2015 consists of seven species that are distributed in Hainan Island, China and southern Vietnam. Of the seven species, five are known from Hainan Island. In this study, four more Qiongthela species collected from Hainan Island are diagnosed and described as new to science based on morphological characters: Q. baotingsp. nov. (♂♀), Q. qiongzhongsp. nov. (♂♀), Q. sanyasp. nov. (♂♀), Q. yinggezuisp. nov. (♂♀). To facilitate future identification, the GenBank accession codes of the DNA barcode gene, cytochrome c oxidase subunit I (COI), for all the type specimens are also provided.
Thinking Aloud on Paper: An Experience in Journal Writing
Authors: Ibarreta Gloria I. , McLeod Linda
Published: February 2020

Journal writing is one of many strategies that can help promote learning in a process-oriented curriculum. This article explores the experience of implementing journal writing as an expectation of second-year baccalaureate nursing students in a clinical practicum. Faculty had a vital role in facilitating this experience. The journals provided a medium within which students explored in depth significant events that occurred in their practicum. Their analysis of these events included application of theoretical frameworks and concepts that supported and strengthened the arguments made in the journals. Students responded very favorably to their experiences in journal writing. In the evaluation of this experience, students reported increased abilities in critical thinking and self-directed learning. These two important concepts complement each other in the students’ learning processes.
Faculty Role Transition From a Community College to a Research-Intensive University
Authors: Zambroski Cheryl Hoyt , Freeman Linda Holbrook
Published: February 2020

Transitions between academic settings require new faculty members to develop expertise consistent with the institutions’ specific missions. Even those faculty members considered experts in their field must adapt to the challenges of new work settings.

In nursing education, mentoring has been shown to address many of those challenges. This article describes the changes in nursing faculty roles involved in a transition from a community college to a research-intensive university within the same urban setting but with different missions. In addition, we propose strategies for facilitating those changes through the use of internal and external mentors. The university setting can provide an almost unlimited environment for professional growth, and internal and external mentors can provide the support crucial to successful transition.
The Lived Experience of NCLEX Failure
Authors: Griffiths Margaret J. , Papastrat Karen , Czekanski Kathleen , Hagan Kevin
Published: February 2020

Educators help coach, focus, and prepare students for the National Council Licensure Examination (NCLEX
®
), but often fall short in providing support when graduates are not successful. Most research to date has focused solely on predicting failure, with little to no attention given to interventions after failure. This study presents the voices of unsuccessful candidates, their responses to failure, their perspectives of the factors that contributed to their failure, and the changes they made that led to subsequent success. The results demonstrate common themes related to the failure experience, successful remediation strategies for retesting, and recommendations for faculty interventions during this vulnerable period. Nurse educators have a responsibility to identify, inform, and intervene with students who are at high risk of failing the NCLEX, and this responsibility is executed capably. However, the role extends beyond graduation. The responsibility to help nursing graduates transition from failure to licensure is the final step of successful undergraduate nursing education.
Using Scoring Rubrics to Facilitate Assessment and Evaluation of Graduate-Level Nursing Students
Authors: Truemper Christina M.
Published: February 2020

Graduate-level nursing students need to be able to express concepts both verbally and in writing. For many students this will be an accumulative ongoing process that is guided by the instructors in each successive class. It is important that instructors use a tool that can consistently assess and evaluate student work, while providing feedback. Scoring rubrics do this by directing students toward areas that need improvement, while also giving credit for those items that are done correctly. Scoring rubrics can be used for both written and oral assignments and can be individualized to fit the context of the subject matter. Although rubrics have been largely associated with undergraduate students, they can improve the ability of graduate nursing students in the areas of written and verbal communication.
Understanding Psychological Distress Among Female Caregivers of the Patients With Mental Illness
Authors: Pathak Abhijit , Subudhi Chittaranjan
Published: February 2020

The present study aims to find the level of psychological distress in female caregivers of patients with mental illness in the context of Jharkhand and its relations with the socio-demographic variable. The sample was drawn from five blocks of Hazaribagh districts of Jharkhand and the respondents were 200 relatives of the patients with mental illness. A socio-demographic data sheet used for recording the socio-demographic characteristics and Kessler Psychological Distress Scale version 10 (K10) used for assessing their psychological distress. The result shows that female gender is having more psychological distress than male and may lead to common mental disorder under persistent condition. The mean score of female was higher than male (i.e., 26.36 [SD= 9.44] and 22.23 [SD= 8.86], respectively). The difference between both the genders found to be significant at less than 0.001 p values in Man Whitney U test.
Near Field Communication (NFC) Applications in the Tourism Industry
Authors: Çelik Çaylak Pınar
Published: February 2020

The use of near field communication (NFC), a type of wireless technology that allows data transfer by bringing two devices closer together, has been increasing very rapidly. NFC offers great ease to its users through its contactless operation and provides the optimum environment for wireless communication with other technologies. Users with NFC-enabled mobile phones can share websites, contact information, phone numbers, music files, videos, and photos and can also unlock doors and can use their phones as mobile wallets to make purchases safely and easily. In recent years, with the increasing use of technology, it is clear that NFC technology is promising for the tourism industry. This chapter provides background on NFC technology. The features of NFC technology and its advantages and disadvantages for the tourism industry are evaluated. NFC technology applications (data sharing, payments, tickets, keys, etc.) for the tourism industry are explained. Finally, examples of NFC applications in the tourism industry are discussed for both tourists and sector stakeholders.
Big Data, Artificial Intelligence, and Their Implications in the Tourism Industry
Authors: Çeltek Evrim , Ilhan Ibrahim
Published: February 2020

Tourism businesses use AI and big data to connect guests creatively and meet their expectations with personalized service. Big data enables tourism professionals to learn more about their customers, and the more they know, the better experience they can offer to customers. As it provides real value, AI has already become an integral part of operations, and this trend will continue. Tourism businesses use AI tools to reduce operating costs and maintenance bills as in many other sectors. AI-oriented marketing has already been widely used in the hospitality industry. Moreover, as long as technology evolves and becomes more complex, tourism professionals will find more ways and methods to implement big data and AI to satisfy customers, and AI will continue to transform the tourism industry. Properties, advantages, and problems of artificial intelligence and big data are discussed in this chapter, and some examples are given from the perspective of the tourism industry.
A New Concept in Tourism
Authors: Coban Gamze , Aydın Şule
Published: February 2020

This chapter provides an insight into the topic of smart destinations. By adopting smart technologies, tourism destinations, as well as cities, gain more opportunities to offer better quality of life for residents and visitors. Smart cities aim to improve resource management, sustainability, and living conditions in urban environments by utilizing ICTs. The concept of smart tourism destination, deriving from smart city, refers to the use of technology in tourism destinations to increase the service quality and tourist satisfaction by focusing on tourists' expectations. In other words, smart tourism destinations aim to integrate technology into the destination for these purposes. This chapter presents the concepts of smart city, smart tourism, and smart destination. The emergence of smart city and smart destination concepts and the issues and challenges they might face are discussed. In addition to some future research directions, a brief discussion on potential controversies is presented.
Effect of Venture Capital on the Growth of Information and Communication Technology University Spin-Offs
Authors: Rodríguez-Gulías María Jesús , Fernández-López Sara , Rodeiro-Pazos David , Faria Ana Paula , Barbosa Natalia
Published: February 2020

The creation of university spin-off firms (USOs) to commercialize the academic research outputs contributes to the economic development of the regions. These firms are often resource-constrained, which may hamper their growth. However, the involvement of venture capital (VC) partners in their management can partly counterbalance their traditional lack of resources. Within the USOs created in Portugal and Spain, around one-third operate in the information and communication technology industry (ICT-USOs). This chapter aims to explore the effect of VC partners on the ICT-USOs' growth by using a sample of 127 Spanish and 176 Portuguese ICT-USOs over the period 2007–2013. The results show that the effect of VC on the ICT-USOs' growth depends not only on the country, but also on how firm growth is measured; whereas a weak positive effect on the sales growth is found, a negative one is obtained in the case of the employment growth.
Evaluating the Role of Three Basic Factors of Prospect Theory in Decision Making
Authors: Zervoudi Evanthia K.
Published: February 2020

The main aim of this paper is to empirically evaluate the role of three significant factors of the Prospect Theory: the S-shaped value function, the loss aversion, and the distortion of probability, in decision making. In order to do this, a general behavioral reward-risk model is firstly setup and an empirical evaluation about the role of each of these factor, separately and in interaction, on the optimal solutions of the problem follows. For the analysis, well known US equity portfolios consisting by stocks listed in NYSE, AMEX, and NASDAQ formed on investment style are employed. The findings indicate that agents differentiate their behavior according to their type of preferences and their loss aversion level but they seem to always prefer high positively skewed assets such as small and value stocks. The attractiveness of positively skewed assets is re-enforced when probability distortion is introduced in the model. The introduction of probability distortion also affects the optimal perspective values of the problem increasing significantly their magnitude. After that, results show that as loss aversion increases agents tend to follow more conservative strategies, with and without probability distortion, while the value functional form has also its role in the model; bounded value functions as the negative exponential function drives agents to more conservative behaviors while unbounded value functions as the piecewise power function give the incentive to agents to undertake great risks and follow more aggressive strategies. The examination of the interaction of these factors indicate that the combination of an unbounded value functional form with a large loss aversion index may reduce agents' aggressiveness and limit (but not alter) the value functional form effect on optimal solutions.
Home Country-Specific Determinants of Outward Foreign Direct Investment in Developing Economies
Authors: Karakuş Rıfat
Published: February 2020

The outward foreign direct investments of developing economies have showed significant increase in recent years. Rising outward foreign direct investment stock of developing economies makes its determinants and consequences crucial. The aim of this study is to determine the home country specific determinants of outward FDI. For this purpose, a panel data analysis is performed with the data of BRICS and Next Eleven countries for the period from 1994 to 2014. The analysis results reveal that inward foreign direct investment, interest rates and technological capability of home country have positive influence and total labor force of home country has negative effect on outward FDI of developing economies.
What Attracts Foreign Direct Investments in Asian Economies?
Authors: Tohyama Hironori
Published: February 2020

This chapter focuses on institutional configurations in host economies and examines the configurations that had a high propensity for foreign direct investment (FDI) inflows in Asian economies. While many previous studies on the relationship between FDI and growth focus on institutions in host economies, they are apt to search for one and/or best institutions. They do not perceive heterogeneous sets of linked institutions. This chapter contributes to the existing literature in a twofold manner. First, this analysis, based on multiple factor analysis, demonstrates a substantial variation in institutional configurations across Asian economies in attracting FDI. These Asian economies can be categorized into three clusters. Second, the fuzzy-set quality comparative analysis shows that two of the institutional configurations have a high propensity for FDI. The one found in Singapore relies on institutional complementarities similar to liberal market economies, while the other one, which is characteristic to Thailand, focuses on human capital formation in Asian welfare capitalism.
Investment Decision Making
Authors: Šević Aleksandar , Marinković Srđan
Published: February 2020

This chapter is a review of different approaches academics take to find right answers on the question how investors' community makes decisions on optimal portfolio of securities and how this process converges toward capital market equilibrium. Authors will try to reconcile the approaches that come from different intellectual traditions. The authors start with the Capital Assets Pricing Model (hereafter CAPM). For decades long the model has been a cornerstone of modern finance literature and a guide for investment decision making. The model assumes that the choice of investment portfolio is directed toward optimization between statistically defined risk and observable return of a universe of available investments, in the setting of rational and homogeneous agents where information is common knowledge. The rigidity of CAPM assumptions led to a plethora of studies where some of those assumptions are relaxed. An important breakthrough to the extant body of knowledge has been made by the introduction of the asymmetric information in the decision-making process.
M&A Deals and Corporate Governance Framework
Authors: Ghosh Sohini , Dutta Sraboni
Published: February 2020

The escalating importance of mergers and acquisitions (M&A) has coincided with concerns about corporate governance issues. This article investigates how corporate governance mechanisms along with firm-specific control variables impact performance during M&A deals occurring between 2000-2012 in acquiring Indian telecom companies. In this research, firm performance has been measured via accounting based, market based and qualitative performance dimensions, represented by Return on Capital Employed (ROCE), Tobin's Q and Human Capital Return on Investment (HCROI) respectively. Panel data regression techniques was employed for the analysis. The learning from this study reveals that board size and firm size have significant positive relationships with ROCE and HCROI. Chairperson-CEO duality also has positive significant association with ROCE. Shareholding percentage of institutional investors was found to have a significant negative relationship with HCROI. Board independence, firm size and market share significantly affect Tobin's Q.
Exploiting Cross-Reality Technologies for Cultural Heritage Dissemination
Authors: Kiourt Chairi , Theodoropoulou Helena G. , Koutsoudis Anestis , Ioannakis Jorgos Alexis , Pavlidis George , Kalles Dimitris
Published: February 2020

One of the most challenging tasks in cross reality environment simulations is the generation of realistic and attractive worlds. The continuous evolution of computer game industry has a dramatic effect on such tasks as younger generations have higher expectations and demands in terms of realism. Virtual, Augmented, and mixed reality-based museums allow the efficient dissemination of cultural heritage thesaurus and are considered a popular application domain for cross reality environments due to their broad appeal. One of their primary scopes is to enrich user experience by introducing intuitive means of interaction with artefacts while offering knowledge in a more pleasant way than most of the traditional approaches. This chapter focuses on the development aspects of realistic simulations of cross reality environments for cultural heritage applications. It covers aspects related to modern 3D graphics and game engines, 3D digitization, and modelling. It discusses on the combination of these technologies in order to produce realistic, pleasant, and educative environments.
The Use of Digital Characters in Interactive Applications for Cultural Heritage
Authors: Vosinakis Spyros
Published: February 2020

Digital characters are software entities that look and act like real or imaginary creatures in a computer-generated environment. They are considered an important element of interactive digital heritage applications that can add significant value and increase user motivation and engagement. This chapter presents a review of the use of digital characters for communicating and disseminating cultural heritage. It explores the wide range of applications that make use of digital characters and attempts to identify how the characters are used, what are their main features, and how are they contributing to the overall cultural experience. The chapter includes an overview of current state of the art in digital character design and implementation approaches, a taxonomy about the usage of characters in cultural heritage applications, and a discussion about prospects and pitfalls of digital character technology for heritage dissemination.
O JORNAL ESCOLAR COMO POSSIBILIDADE DE INTERDISCIPLINARIDADE NO ENSINO BÁSICO
Authors: SIPEC I
Published: February 2020

Este artigo tem como finalidade apresentar o jornal escolar como forma de envolver asdisciplinas de Ciências, Arte e Língua Portuguesa em uma perspectiva interdisciplinar e, assim,possibilitar um ensino menos fragmentado e mais contextualizado. Esse propósito se desdobraem outros, como incentivar os alunos à leitura e à produção de textos e proporcionar aos alunoso contato com diferentes ferramentas de aprendizagem, neste caso, o jornal escolar. Para issoserá utilizada a metodologia de revisão bibliográfica, buscando autores que apoiem a práticainterdisciplinar e o uso do jornal escolar. O objetivo do artigo é propor o jornal escolar comoum produto educacional que pode auxiliar no desenvolvimento de práticas interdisciplinaresentre as disciplinas já mencionadas. A elaboração e a produção de um jornal escolar como oponto de partida para um projeto pode impactar de forma positiva no aprendizado dos alunos.
A FÍSICA NEWTONIANA É DE NEWTON?
Authors: SIPEC I
Published: February 2020

As conhecidas três Leis de Newton são derivadas das concepções expostas em seu Livro 1 doPrincipia, porém, a ordem estabelecida nele é, primeiramente definições e depois os axiomasou leis do movimento. Essa organização esclarece que há diferença entre definição e lei, ouaxioma. O livro expõe as definições de alguns tipos de força e não uma única definição comoé adotada a Segunda Lei de Newton. O trabalho destina-se, por meio de uma pesquisabibliográfica, a apresentação mais fiel das concepções de Newton sobre força e suasconsiderações com relação a inércia. Essas concepções divergem das apresentadas pelos livrosdidáticos e necessitam da cautela dos professores de Física, principalmente quando háexposição que o conhecimento é produzido e finalizado por uma pessoa isolada de contexto.
Water Absorption in Vegetable Fiber-Reinforced Polymer Composites: A Three-Dimensional Investigation Using the Langmuir-Type Model
Authors: Gomes dos Santos W.R. , da Costa Melo R.Q. , de Brito Correia B.R. , Magalhães Hortência Luma Fernandes , Cabral E. Morais , de Figueiredo Maria José , de Lima Antonio Gilson Barbosa
Published: February 2020

This work presents a non-steady state and three-dimensional mathematical modeling to predict moisture transport (based on the Langmuir-Type Model) inside the vegetable fiber-reinforced composite materials. The numerical solutions of the governing equations have been obtain using the finite-volume method. The model was apply for vegetable fiber-reinforced polymer composites. Emphasis to the geometrical dimension effect of the composite in the water absorption process was given. Results of the average moisture content, free and entrapped water molecules concentration kinetics and free and entrapped water molecules concentration distributions inside the material along the process are shown and analyzed. In the distributions of the analyzed properties, it was observed that the geometric dimensions of the composite has influence in the water absorption process.
Computational and Experimental Study on the Stability of Nanofluids
Authors: Roslan A.A. , Zaid Hasnah Mohd , Kuah Y.C. , Shukur Muhammad Fadhlullah  Abd , Guan Beh Hoe , Umar M.
Published: February 2020

Nanofluids, which are suspensions of nanoparticles dispersed in a base fluid, have remarkable potential in a wide range of applications. However, the stability of the nanofluid has remained a challenge and a matter of concern. A lot of research, development work and reviews have been conducted on the preparation and stability of nanofluids. In this study, calculation of solubility parameter values using a molecular modelling software were performed to aid the screening of nanoparticles that are compatible with the base fluid. The solubility parameter is the numerical representation of the solvency behavior between two molecules. A molecular modelling software was used to study the solubility parameter values of nanoparticles to determine their compatibility with the base fluids. To validate the model, the computed values were compared against published literature and it was shown that the model has achieved more than 95% accuracy. The simulations were verified with experimental work with varying concentration of nanoparticles in brine solution and deionized water. Experimental results showed that zinc oxide nanoparticles demonstrated the best compatibility with the base fluid, which tally with the simulation.
Exact Solutions on Mixed Convection Flow of Accelerated Non-Coaxial Rotation of MHD Viscous Fluid with Porosity Effect
Authors: Mohamad Ahmad Qushairi , Ismail Zulkhibri , Mod Omar Nur Fatihah , Qasim Muhammad , Zakaria Muhamad Najib , Shafie Sharidan , Jiann Lim Yeou
Published: February 2020

Mixed convection of unsteady non-coaxial rotation flow of viscous fluid over an accelerated vertical disk is investigated. The motion in the fluid is induced due to the rotating and buoyancy force effects. The problem is formulated and extended in terms of coupled partial differential equations with some physical boundary and initial conditions. The non-dimensional equations of the problem are obtained by using the suitable non-dimensional variables. The exact solutions of non-coaxial velocity and temperature profiles are obtained by using Laplace transform method which are satisfying all the initial and boundary conditions. The physical significance of the mathematical results is shown in various plots and is discussed for Grashof and Prandtl numbers as well as magnetic, porosity and accelerated parameters. It is found that, the velocity with the effect of acceleration is higher compared to constant velocity. In limiting sense, the present solutions are found identical with published results.
Investigation of Flow Around a Slender Body at High Angles of Attack
Authors: Ibraheem AlQadi Ibraheem AlQadi
Published: February 2020

A numerical investigation of flow around a slender body at high angles of attack
is presented. Large eddy simulation of the flow around an ogive-cylinder body at high
angles of attack is carried out. Asymmetric vortex flow was observed at angles of attack
of α = 55◦
and 65◦
. The results showed that the phenomenon is present in the absence
of artificial geometrical or flow perturbation. Contrary to the accepted notion that flow
asymmetry is due to a convective instability, the development of vortex asymmetry in the
absence of perturbations indicates the existence of absolute instability. An investigation of
the unsteady flow field was carried out using dynamic mode decomposition. The analysis
identified two distinct unsteady modes; high-frequency mode and low-frequency mode.
At angle of attack 45◦
the high-frequency mode is dominant in the frontal part of the
body and the low-frequency mode is dominant at the rear part. At α = 55◦
, the highfrequency mode is dominant downstream of vortex breakdown. At α = 65◦
, the spectrum
shows a wide range of modes. Reconstruction of the dynamical modes shows that the
low-frequency mode is associated with the unsteady wake and the high-frequency mode
is associated with unsteady shear layer.
Milk Yield and Composition As Affected by Nutritional Manipulations
Authors: Samir A. Najadi Samir A. Najadi
Published: February 2020

The objective was to evaluate milk yield, milk composition and milk fatty acids contents of
lactating Harri ewes (n=24) receiving different concentrate to roughage (A 80:20; B 60:40; C 40:60 and D
20:80 C:R) rations. The results revealed that no differences (P = 0.29) in body weights of ewes were detected
after parturition but body weights declined steadily as ewes continued on lactation. Group D produced more
(P < 0.01) milk (1.38±0.5 kg/day) than groups A (0.76±0.5 kg/day), B (0.88±0.5 kg/day) and C (0.66±0.5
kg/day). Yields of milk fat, SNF, protein, lactose and minerals yields (g/day) were greater (P = 0.01) in group
D than groups B and C not group A. No differences were found in milk fat, SNF, protein, lactose and
minerals percentages (%). Groups D and A had more (P = 0.06) C18:2c (3.15±0.21 and 2.99±0.08 g/100g fat)
than group B (1.98±0.54 g/100g fat) not group C (2.72±0.05 g/100g fat). Poly unsaturated fatty acids (PUFA)
were increased (P<0.01) in groups A and D (4.07±0.18 and 4.49±0.27 g/100g fat) than groups B and C
(3.34±0.12 and 3.41±0.23 g/100g fat). Lactating ewes' diet should include adequate ratio of roughage to
increase milk yield and improve milk fat composition of unsaturated fatty acids.
Hotel Chains and the Sharing Economy in Global Tourism
Authors: Salvioni Daniela M.
Published: February 2020

The global tourism industry has experienced steady growth in recent years. In this context, the sharing economy has changed the rules of global tourism, developing multi-sided technology platforms for the provision of hospitality with a range comparable to that of major hotel groups. The sharing economy is an emergent economic-technological phenomenon fostered by developments in ICT, considered both a disruptive innovation and a competitive threat to hotel companies. Accommodation sharing modifies the traditional short-term rigidity of the location-based hospitality offer, with a positive impact on global tourism as well as a significant change in the competitive conditions of the hotel market. This paper considers the role of hotel chains in global tourism and the effect on their governance generated by recent developments in accommodation sharing, of which Airbnb is pioneer and leader.
Republic of North Macedonia
Authors:   International Monetary Fund. European Dept.
Published: February 2020

Growth is solid, with strong domestic demand and resilient exports despite the slowdown in global trade. The government has undertaken important reforms in past years to strengthen the economy and support the country’s EU candidacy. To bolster the economy’s resilience to shocks and speed up income convergence, the authorities should rebuild fiscal policy space, re-orient public spending toward investment and continue improving institutions and government efficiency.
Republic of Congo
Authors:   International Monetary Fund. African Dept.
Published: February 2020

The economic situation remains difficult but there are some initial signs of stability, and non-oil growth could turn positive for the first time since 2015. The political environment is stable, though there is discontent with government policies due in part to the authorities’ limited engagement with the private sector and civil society.
DATA QUALITY CHECK AND VISUAL ANALYSIS OF CORS STATION BASED ON ANUBIS SOFTWARE
Authors: Xiao Y. , Yao M. H. , Tang S. H. , Liu H. F. , Xing P. W. , Zhang Y.
Published: February 2020

Abstract. Aiming at the observation data of CORS multi-mode data quality and inspection in CORS station, based on the observation data of a CORS station in Guilin, Guangxi, the paper used TEQC and Anubis software to check the data quality from data utilization, cycle slip ratio and multipath. The results show that the three quality inspection indicators of Anubis software are better than TEQC software, which proves that Anubis' data quality inspection results are effective and reliable. On this basis, using Anubis drawing tools to perform quality inspection and visual analysis from satellite constellation, signal band and observation data itself, it shows that Anubis' visual content is more elaborate than TEQC, and users can more intuitively understand and control the data quality of CORS station.
Reconciling the surface temperature–surface mass balance relationship in models and ice cores in Antarctica over the last two centuries
Authors: Cavitte Marie G. P. , Dalaiden Quentin , Goosse Hugues , Lenaerts Jan T. M. , Thomas Elizabeth R.
Published: February 2020

Abstract. Ice cores are an important record of the past surface mass balance (SMB) of ice sheets, with SMB mitigating the ice sheets’ sea level impact over the recent decades. For the Antarctic Ice Sheet (AIS), SMB is dominated by large-scale atmospheric circulation, which collects warm moist air from further north and releases it in the form of snow as widespread accumulation or focused atmospheric rivers on the continent. This implies that the snow deposited at the surface of the AIS should record strongly coupled SMB and surface air temperature (SAT) variations. Ice cores use δ18O as a proxy for SAT as they do not record SAT directly. Here, using isotope-enabled global climate models and the RACMO2.3 regional climate model, we calculate positive SMB-SAT and δ18O-SMB correlations over ∼90 % of the AIS. The high spatial resolution of the RACMO2.3 model allows us to highlight a number of areas where SMB and SAT are not correlated, and show that wind-driven processes acting locally, such as Foehn and katabatic effects, can overwhelm the large-scale atmospheric input in SMB and SAT responsible for the positive SMB-SAT correlations. We focus in particular on Dronning Maud Land, East Antarctica, where the ice promontories clearly show these wind-induced effects. However, using the PAGES2k ice core compilations of SMB and δ18O of Thomas et al. (2017) and Stenni et al. (2017), we obtain a weak correlation, on the order of 0.1, between SMB and δ18O over the past ~150 years. We obtain an equivalently weak correlation between ice core SMB and the SAT reconstruction of Nicolas and Bromwich (2014) over the past ~50 years, although the ice core sites are not spatially co-located with the areas displaying a low SMB-SAT correlation in the models. To resolve the discrepancy between the measured and modeled signals, we show that averaging the ice core records in close spatial proximity increases their SMB-SAT correlation. This increase shows that the weak measured correlation likely results from random noise present in the ice core records, but is not large enough to match the correlation calculated in the models. Our results indicate thus a positive correlation between SAT and SMB in models and ice core reconstructions but with a weaker value in observations that may be due to missing processes in models or some systematic biases in ice core data that are not removed by a simple average.
The Education Agency as Research Intermediary
Authors: Courtney Matthew B.
Published: February 2020

Since the late 1970s, researchers and policy makers have debated the role of research in policy making. Since the passage of the Every Student Succeeds Act (ESSA) in 2015, education policy has experienced a renewed interest in this topic. ESSA presents a rigorous framework and set of requirements for research use in educational decision making. This paper presents an evidence-informed model that education agencies (EAs) can follow to support schools in the implementation of ESSA’s evidence-based practice provisions. The model includes three key activities that EAs should engage in to become effective research intermediaries: (1) model effective research use, (2) build capacity in educators, and (3) promote action research.
Beginnings and Ends of Rhetorical Theory: Ann Arbor 1900
Authors: Gross Daniel M.
Published: February 2020

Google Ngram metadata reveal that the English phrase “rhetorical theory” is not that old, appearing on the scene in the latter half of the nineteenth century, and then picking up dramatically with critical and literary theory in the 1960s. How do we square this with familiar arguments that rhetorical theory is much, much older? In this forum contribution I argue that the long view applies to our contemporary rhetorical theory only if we equivocate. Much of what currently falls under the heading “rhetorical theory” has little or nothing to do with the systematic conceptualization of persuasive discourse (i.e., the long view)—general, posthuman, eco-, and materialist rhetorics are the most prominent counterexamples. Instead, around 1900, Gertrude Buck develops what I call the short and sharp view that prevails to this day: rhetorical theory offers reality figured by way of its alternatives.
NORMAS PERMISIVAS Y CLAUSURA DE LOS SISTEMAS NORMATIVOS
Authors: E. Navarro Pablo
Published: February 2020

En este trabajo analizo la autonomía y relevancia normativa de las normas permisivas. En especial, mis propósitos principales son revisar dos tesis escépticas: (i) los permisos y las normas permisivas pueden reducirse a otras formas normativas, e.g. derogación de prohibiciones, y (ii) no se producen diferencias significativas cuando se permite una conducta que no había sido previamente regulada. Ambas tesis son examinadas en relación a la naturaleza y función del principio de clausura normativa (todo lo que no está prohibido está permitido). La conclusión de este trabajo es que las normas permisivas, y en particular las normas de clausura, pueden cumplir una importante función en los sistemas normativos y son una herramienta útil para analizar otros problemas como las lagunas del derecho y la discreción judicial.
Single Sensor Multi-Spectral Imaging
Authors: Soria Poma Xavier
Published: February 2020

This dissertation presents the benefits of using a multispectral Single Sensor Camera (SSC) that, simultaneously acquire images in the visible and near-infrared (NIR) bands. The principal benefits while addressing problems related to image bands in the spectral range of 400 to 1100 nanometers, there are cost reductions in the hardware setup because only one SSC is needed instead of two; moreover, the cameras’ calibration and images alignment are not required anymore. Concerning to the NIR spectrum, even though this band is close to the visible band and shares many properties, the sensor sensitivity is material dependent due to different behavior of absorption/reflectance capturing a given scene compared to visible channels. Many works in literature have proven the benefits of working with NIR to enhance RGB images (e.g., image enhancement, dehazing, etc.). In spite of the advantage of using SSC (e.g., low latency), there are some drawbacks to be solved. One of these drawbacks corresponds to the nature of the silicon-based sensor, which in addition to capturing the RGB image when the infrared cut off filter is not installed it also acquires NIR information into the visible image. This phenomenon is called RGB and NIR crosstalking. This thesis firstly faces this problem in challenging images and then it shows the benefit of using multispectral images in the edge detection task.Then, three methods based on CNN have been proposed for edge detection. While the first one is based on the most used model, holistically-nested edge detection (HED) termed as multispectral HED (MS-HED), the other two have been proposed observing the drawbacks of MS-HED. These two novel architectures have been designed from scratch; after the first architecture is validated in the visible domain a slight redesign is proposed to tackle the multispectral domain. A dataset is collected to face this problem with SSCs. Even though edge detection is confronted in the multispectral domain, its qualitative and quantitative evaluation demonstrates the generalization in other datasets used for edge detection, improving state-of-the-art results. One of the main properties of this proposal is to show that the edge detection problem can be tackled by just training the proposed architecture one-time while validating it in other datasets.
An Optimized Design Research Based on Variable-lead Spiral Pair of Contact Stress and Elasto-hydrodynamic Lubrication State
Authors: Fei He , Xie Xu , Tao Zhang Ben , Ke Yang
Published: February 2020

Abstract: Variable-lead spiral pair mainly includes spiral wire and  spiral roller. Design of variable-lead helix firstly conforms to the motion characteristics of variable-lead screw drive and nut-connected mechanism, then comes to lead function of the variable lead helix. At the same time, according to the range of screw lead angle and pressure angle, the angular velocity of spiral wire rod and the radius of spiral wire are concluded. Finally come to the parameter equation of helix. Then, the contact analysis and lubrication characteristics of the variable-lead helical pair are analyzed to design the helical roller with the minimum contact stress and the condition of the elasto-hydrodynamic lubrication. The radius of the variable-lead helical roller and the selectable range of the bus length are obtained. Finally, an example is given to illustrate the application of the variable-lead spiral pair in the subway door system, and the optimization design of the variable-lead spiral pair is realized.
Kollektive Arbeitsorganisation und politische Interessenvertretung von transnationalen Care-Arbeiterinnen in der 24-Stunden-Betreuung
Authors: Bomert Christiane
Published: February 2020

Die Lebens- und Arbeitsbedingungen von Migrantinnen, die hierzulande in der sog. 24-Stunden-Betreuung beschäftigt sind, werden seit der Jahrtausendwende intensiv beforscht. Die empirische Forschung und die mediale Öffentlichkeit haben den kollektiven Handlungsstrategien der Beschäftigten in den letzten Jahren besondere Aufmerksamkeit geschenkt. In diesem Beitrag werden verschiedene Netzwerkstrukturen, die der gegenseitigen Unterstützung, der Arbeitsorganisation und der politischen Interessenvertretung dienen, thematisiert und nach einem Einblick in das Tätigkeitsfeld der transnationalen Care-Arbeit überblickartig zusammengeführt.
Contingency and Potential
Authors: Cressman Daryl ,   Philosophy Documentation Center
Published: February 2020

Unsatisfied with an intellectual history that divides the philosophy of technology into classical and empirical approaches, the following paper suggests a renewed attention to dialectical philosophies of technology. Drawing on the work of Andrew Feenberg, I argue that dialectical philosophies of technology are not essentialist holdovers from the past, but are empirically grounded approaches that direct researchers to ask why we have the technologies we do. From this, dialectical philosophies of technology open up ways to think about technology that prioritize the tension between the sociotechnical world as it is and concrete potentials of what it could be. Contrasting this against postphenomenology, I argue that avoiding these moments of potential can lead to a conservative and paternalistic philosophy of technology that fixes sociotechnical agency to a professional class of designers, engineers, and policy makers. I conclude by suggesting that Feenberg's dialectical philosophy of technology presents a modest alternative to the design imperatives that now guide the trajectory of postphenomenology.