bluuebunny/crossref_metadata_2025 huggingface dataset:
Fitting in with the crowd: the role of prospecting in seabird behavioural trends
Authors: Wails Christy N. , Major Heather L.
Published: February 2017

Prebreeding, subadult seabirds have been documented prospecting or visiting multiple sites throughout the breeding season to gather information on colony reproductive success, identify suitable habitat, evaluate prey abundance, and locate potential partners; however, many aspects of prospector biology remain unknown. We explored prospector behaviour as a means of furthering our understanding of postnatal seabird dispersal and colony attendance using Least Auklets (Aethia pusilla (Pallas, 1811)) and Crested Auklets (Aethia cristatella (Pallas, 1769)) breeding at Gareloi Island, Alaska, in 2014 and 2015. We recorded age class, length of time spent on the colony, and behaviour for individuals attending a study plot over the course of two breeding seasons. Although prospectors typically spent more time on the colony surface than adults, prospectors rarely socialized with conspecifics during their visits to the colony, possibly due to the absence of a citrus-like feather odour used in olfactory communication. Additionally, we found substantial differences between observed and predicted data between years, demonstrating that other factors (likely prey abundance or quality) influenced behaviour in 2015. Our results suggest that the collective knowledge of seabird prospecting behaviour is not necessarily transferable between taxa and there may be a range of strategies employed by prospectors when assessing colonies.
Chenodeoxycholic Acid Derivative HS-1200 Inhibits Hepatocarcinogenesis and Improves Liver Function in Diethylnitrosamine-Exposed Rats by Downregulating MTH1
Authors: Xu Miao , Zhao Qi , Shao Donghui , Liu Hui , Qi Jianni , Qin Chengyong
Published: February 2017

Aim. To investigate the effects of HS-1200 on liver tumorigenesis and liver function in a diethylnitrosamine- (DEN-) induced hepatocellular carcinoma (HCC) rat model.Methods. Rats were randomly assigned into five groups: control, HS-1200, HCC, HCC + low dose HS-1200, and HCC + high dose HS-1200 groups. Rat HCC model was established by intraperitoneal injection of DEN. And rats were given HS-1200 by daily oral gavage. After 20 weeks, we examined animal body weight, liver weight, liver pathological changes, serum levels of AST, ALT, and AFP, andmutT homologue gene 1 (MTH1)in liver tissue.Results. Oral gavage of HS-1200 significantly increased animal body weight and decreased liver weight as well as liver coefficient in HCC rats (P<0.05versus HCC group). Moreover, oral administration of HS-1200 suppressed tumorigenesis, attenuated pathological changes in liver tissues, and decreased serum levels of AST, ALT, and AFP in HCC rats (P<0.05versus HCC group). In addition, the mRNA level of MTH1 was upregulated in the liver tissues of HCC rats (P<0.05versus control group), which was reversed by HS-1200 treatment in a dose-dependent manner (P<0.05versus HCC group).Conclusions. HS-1200 inhibits hepatocarcinogenesis and improves liver function maybe by inducing downregulation of MTH1.
Efficacy of Wii-Fit on Static and Dynamic Balance in Community Dwelling Older Veterans: A Randomized Controlled Pilot Trial
Authors: Padala Kalpana P. , Padala Prasad R. , Lensing Shelly Y. , Dennis Richard A. , Bopp Melinda M. , Parkes Christopher M. , Garrison Mark K. , Dubbert Patricia M. , Roberson Paula K. , Sullivan Dennis H.
Published: February 2017

Background/Objectives. Balance problems are well-established modifiable risk factors for falls, which are common in older adults. The objective of this study was to establish the efficacy of a Wii-Fit interactive video-game-led physical exercise program to improve balance in older Veterans. Methods. A prospective randomized controlled parallel-group trial was conducted at Veterans Affairs Medical Center. Thirty community dwelling Veterans aged 68 (±6.7) years were randomized to either the exercise or control groups. The exercise group performed Wii-Fit program while the control group performed a computer-based cognitive program for 45 minutes, three days per week for 8-weeks. The primary (Berg Balance Scale (BBS)) and secondary outcomes (fear of falling, physical activity enjoyment, and quality of life) were measured at baseline, 4 weeks, and 8 weeks. Results. Of 30 randomized subjects, 27 completed all aspects of the study protocol. There were no study-related adverse events. Intent-to-treat analysis showed a significantly greater improvement in BBS in the exercise group (6.0; 95% CI, 5.1–6.9) compared to the control group (0.5; 95% CI, −0.3–1.3) at 8 weeks (average intergroup difference (95% CI), 5.5 (4.3–6.7), p < 0.001) after adjusting for baseline. Conclusion. This study establishes that the Wii-Fit exercise program is efficacious in improving balance in community dwelling older Veterans. This trial is registered with ClinicalTrials.gov Identifier NCT02190045.
Surface Effects on the Properties of Screw Dislocation in Nanofilms
Authors: Liu Lili , Meng Zhenya , Xu Gang , He Chenglin , Wu Xiaozhi , Wang Rui
Published: February 2017

The image dislocation method is used to construct the governing equation of dislocations in nanofilms. The classical Peierls-Nabarro equation can be recovered when the thickness of nanofilm is taken to be infinite. In order to determine the core width and Peierls stress of dislocations, the unstable stacking fault energies of Al and Cu nanofilms are calculated via the first-principle methods. It is found that surface effect can increase the Peierls stresses of screw dislocations in Al and Cu nanofilms.
A Novel Chaotic System without Equilibrium: Dynamics, Synchronization, and Circuit Realization
Authors: Azar Ahmad Taher , Volos Christos , Gerodimos Nikolaos A. , Tombras George S. , Pham Viet-Thanh , Radwan Ahmed G. , Vaidyanathan Sundarapandian , Ouannas Adel , Munoz-Pacheco Jesus M.
Published: February 2017

A few special chaotic systems without unstable equilibrium points have been investigated recently. It is worth noting that these special systems are different from normal chaotic ones because the classical Shilnikov criterion cannot be used to prove chaos of such systems. A novel unusual chaotic system without equilibrium is proposed in this work. We discover dynamical properties as well as the synchronization of the new system. Furthermore, a physical realization of the system without equilibrium is also implemented to illustrate its feasibility.
Can the Preoperative Serum Lactate Level Predict the Extent of Bowel Ischemia in Patients Presenting to the Emergency Department with Acute Mesenteric Ischemia?
Authors: Ambe Peter C. , Kang Kai , Papadakis Marios , Zirngibl Hubert
Published: February 2017

Purpose. Early recognition of acute mesenteric ischemia (AMI) can be challenging. Extensive bowel necrosis secondary to AMI is associated with high rates of mortality. The aim of this study was to investigate the association between preoperative serum lactate level and the extent of bowel ischemia in patients with AMI. Methods. Data of patients with abdominal pain and elevated serum lactate undergoing emergency laparotomy for suspected AMI within 24 hours of presentation was retrospectively abstracted. The length of the ischemic bowel segment was compared with the preoperative serum lactate level. Results. 36 female and 39 male patients, with median age 73.1 ± 12.3 years, were included for analysis. The median preoperative lactate was 2.96 ± 2.59 mmol/l in patients with ≤50 cm, 6.86 ± 4.08 mmol/l in patients with 51–100 cm, 4.73 ± 2.76 mmol/l in patients with >100 cm ischemic bowel, and 14.07 ± 4.91 mmol/l in the group with multivisceral ischemia. Conclusion. Although elevated serum lactate might permit an early suspicion and thus influence the clinical decision-making with regard to prioritization of surgery in patients with suspected AMI, a linear relationship between serum lactate and the extent of bowel ischemia could not be established in this study.
Spontaneous Interfacial Tension Changes at the Interface of Metal Chloride Nitrobenzene Solution and Aqueous Stearyltrimethylammonium Chloride Solution: the Role of Metal Ions
Authors: Arai Yuka , Tsuruki Yuta , Isobe Toshihiro , Nakajima Akira , Matsushita Sachiko
Published: February 2017

The authors examine the roles of chemical compounds that can generate spontaneous interface motion, especially in the Nakache and Dupeyrat system, which normally uses a stearyltrimethylammonium chloride (STA-Cl) aqueous solution and a KI + I2 nitrobenzene solution. The authors observed spontaneous behavior at the interface of a system comprising the STA-Cl aqueous solution and a nitrobenzene solution of ZnCl2 or FeCl3. To investigate the role of metal ions, in-situ electrochemical measurements of systems of various metal halides, such as KCl, CaCl2, AlCl3, ZnCl2, and FeCl3, were conducted and discussed regarding the relationship of the spontaneous interface motion with the consideration of standard Gibbs energy of surfactant adsorption, solubility into the oil phase, and hydration enthalpy. The importance of electric potential dependence of surfactant adsorption–desorption at the oil/water interface is suggested and supported using an FeCl3 chlorobenzene solution. A material design with the consideration of a potential barrier of surfactant desorption would enable us to obtain a spontaneous motion system not utilizing toxic substances.
Characteristic Spectroscopic and Photophysical Properties of Tricarbonyl Rhenium(I) Complexes Having Multiple Arylborane Charge Transfer Units
Authors: Kang Yuanyuan , Ito Akitaka , Sakuda Eri , Kitamura Noboru
Published: February 2017

An introduction of two arylborane charge transfer (CT) units to the periphery of 1,10-phenanthroline (B2phen) or 2,2′-bipyridine (B2bpy) in a tricarbonyl rhenium(I) diimine complex (fac-[Re(CO)3(B2phen)Br] = ReB2phen or fac-[Re(CO)3(B2bpy)Br] = ReB2bpy) resulted in unique redox, spectroscopic, and photophysical properties of the complex. In particular, the presence of the two arylborane units in the complex can enhance its metal-to-ligand CT absorption intensity in the visible region and the radiative rate constant, compared to those of the complexes without and with the single arylborane unit in the ligand. The single X-ray crystal structure of ReB2phen is also reported.
The Ferrements of poetry: The geopolitical vision of Aimé Césaire’s Cold War poems
Authors: Bonner Christopher T
Published: February 2017

This article examines the poems collected in Ferrements (1960) – the last collection of poems that Aimé Césaire would publish for another two decades – against the Cold War context of Césaire’s 1956 separation from Soviet communism. Critics tend to view this collection as either a reflection of Césaire’s disillusionment with radical politics or a turn away from avant-garde poetry. This article makes the case that the poems of Ferrements are in fact crucial to the development of Césaire’s political thought in this period of ideological rupture. As this article demonstrates, Césaire uses the conceptual tools of poetry towards a systematic analysis of the changed geopolitical situation of the global Cold War. The article focuses especially on Césaire’s extensive use of geographic imagery, his elegies for insurrectionary figures, and congruities between the poetics of Ferrements and the geopolitical stance of non-alignment.
Legends, memories and violence in North African cities: Urban space in Kateb Yacine’s Nedjma and Salim Bachi’s Le chien d’Ulysse
Authors: Panizzon Philippe
Published: February 2017

This article examines the role of urban space in two novels: Nedjma by Kateb Yacine and Le chien d’Ulysse by Salim Bachi. Drawing on Frantz Fanon’s observations about the colonial city in Les damnés de la terre and Michel de Certeau’s ideas on subversive practices of city dwellers in his L’invention du quotidien, this article explores the protagonists’ experiences in the colonial or postcolonial city and the way they remap the cities with their personal narratives. It demonstrates that in the face of urban transformation brought about by colonial or postcolonial violence the mythical dimension of the city – its legends, memories and myths harking back to a supposedly pristine Algerian past – is irretrievable. With particular reference to Jan Assmann’s theory of cultural memory and Max Silverman’s idea of palimpsestic memory, this article argues that violent nature of the cities’ past and present, along with their vanished cultural memory, prohibits the protagonists from creating a coherent historical narrative around the city, and in a wider sense from developing and sustaining the future character of Algerian cultural and national identity.
Principals’ perceptions of public schools’ professional development changes during NCLB
Authors: Wieczorek Douglas
Published: February 2017

This study investigated public school principals’ reports of professional development implementation at the school level while working in different state- and local-level contexts (state accountability level, geographic locations, socioeconomic status, demographics, and grade levels). I attempted to measure principals’ reported changes in levels of teacher involvement and alignment of professional development with standards, student learning outcomes, school goals, resources, and district goals during No Child Left Behind (NCLB). Using two-level, Hierarchical Generalized Linear Proportional Odds modeling (HGLM-PO), and three pooled waves of a national sample from the Schools and Staffing Survey (National Center for Education Statistics, 2000, 2004, 2007), I implemented a quantitative, repeated cross-sectional, self-report, extant secondary survey analysis design. Principals reported a decrease in teachers’ planning and presentation of professional development during NCLB implementation across all settings, indicating a potential reduction in teachers’ participation in the professional development process. Principals who worked in urban, elementary, low-SES, and high minority school contexts were more likely to report teachers’ participation in the planning and presentation of professional development, but were also more likely to report an increase in the direction and alignment of professional development with school and district goals, standards, student achievement outcomes, and resources. There is evidence that a school community’s location, socioeconomic status, and school demographics plays a role in how schools may interpret accountability environments and implement teachers’ professional development. In all settings, school leaders need to purposefully focus on and retain collaborative professional development practices with teachers in the context of continued accountability pressures.
Identifying scalable policy solutions: A state-wide cross-classified analysis of factors related to early childhood literacy
Authors: Vagi Robert L. , Collins Clarin , Clark Terri
Published: February 2017

Given the critical role that literacy plays in children’s academic and personal development, policymakers have increasingly focused on policies related to early childhood literacy, particularly among poor and minority students. In this study, authors use a census of data from Arizona, a state with a large and growing population of traditionally low-performing demographic groups, to identify school, district, and community health factors that plausibly influence third grade literacy rates. Authors find two independent measures of student attendance related to school-level reading achievement after controlling for a variety of factors that have been identified in previous studies of student achievement. The findings indicate that policies aimed at increasing school-level attendance rates may be effective and inexpensive approaches to increasing childhood literacy rates.
Enhancing Social-Ecological Resilience in Indonesia: A Case of North Pekalongan District, Central Java
Authors: Artiningsih A. , Worosuprojo Suratman , Rijanta R. , Hardoyo Su Rito
Published: February 2017

In the last eight years (2008-2016), some areas in the northern part of Pekalongan have been experiencing coastal inundation. There have been social, economic and physical disruptions caused by coastal inundation particularly on built environments, paddy fields, and fishpond. The capacity of these areas to provide support for community livelihood has decreased significantly. This accumulative environmental change leads to the emerging of vulnerable regions which are characterized by limited social and ecological capability in responding to hazards. In order to enhance the social-ecological resilience, it is necessary to identify how these communities elevate their capacity and improve their livelihood. This paper presents empirical evidence of various pathways on how the community has transformed their capacity to respond to the changing environment due to coastal inundation. Using a case study approach, this paper explores on how the community has learned from their experiences, knowledge, and efforts withdrawn from the past, and then turns them into a better understanding to cope with, to adapt to, and to become resilient from coastal inundation. In-depth interviews with several key persons who are selected by purposive and snowballing sampling method are employed. These key persons represent the most capable person in each sub-district who poses some important data and information related to coastal inundation either as the individual, household members, or community organization members. The scope of area observation is limited to six sub-districts which adjacent to the coast in the North Pekalongan District. This research employs inductive approach and manual coding technique. The research demonstrates that social-ecological resilience will likely enhance in a community which is capable of nurturing flexible networking. Such networking has made it possible for important information, novel knowledge and practical tools and solutions spread over in the community. These are key elements that allow new transformative pathways occur. However, there is various community capacities with different achievement on transformative pathways which need to be engage on the future empowerment initiatives. Only few community of Kandang Panjang Sub-district come to short term resilience due to their awareness on establishing social networking and several actions on environmental quality improvement.
Rare Coumarins Induce Apoptosis, G1 Cell Block and Reduce RNA Content in HL60 Cells
Authors: Widelski Jarosław , Kukula-Koch Wirginia , Baj Tomasz , Kedzierski Bartosz , Fokialakis Nicolas , Magiatis Prokopis , Pozarowski Piotr , Rolinski Jacek , Graikou Konstantina , Chinou Ioanna , Skalicka-Wozniak Krystyna
Published: February 2017

The rare coumarins stenocarpin, stenocarpin isobutyrate, oficinalin, oficinalin isobutyrate, 8-methoxypeucedanin and the known xanthotoxin, isoimperatorin, bergapten, peucedanin and 8–methoxyisoimperatorin were isolated fromPeucedanum luxuriansTamamsch. (Apiaceae) and identified by means of spectral data (1D and 2D NMR). Their immunomodulating activity was evaluated by flow cytometry and their influence on HL60 cells as well as on PHA-stimulated PBLs was tested. All tested coumarins induce apoptosis (maximal in the 48 h culture) and decrease cell proliferation in a time- and dose-dependent manner, especially in HL60 cells. They also induce partial G1 block, but only in HL60 cells (at 100 µM concentrations). Dose-dependent reduction of RNA content was also found in G1 cells treated by the coumarins. All of the tested coumarins also possessed immunomodulatory activities. Bergapten and xanthotoxin were found to be the best candidates for further evaluation as anti-cancer drugs.
Inflationary Thresholds, Financial Development and Economic Growth: New Evidence from Two West African Countries
Authors: Njindan Iyke Bernard , Odhiambo Nicholas M.
Published: February 2017

This paper examines the role of inflationary threshold effects in the finance-growth relationship for Ghana and Nigeria. Ghana and Nigeria are relatively homogenous in terms of financial development, economic growth, and inflationary history and therefore provide an acceptable choice for this empirical analysis. Due to lack of data availability, the sample spans the period 1964–2011 for Ghana and 1961–2011 for Nigeria. Using appropriately specified threshold regressions, we found inflationary thresholds in both countries during the study periods. Specifically, the inflationary threshold range for Ghana is 10.73 %–29.83 %. For Nigeria, the inflationary threshold range is 10.07 %–19.25 %. By estimating the threshold regressions, we found financial development to have positive and significant effect on economic growth during low and moderate inflationary regimes; and insignificant effect on growth during high inflationary regimes, for both countries. In particular, financial development impact greatly on growth in Ghana when the rate of inflation is below a threshold of 10.73 % but dissipates when inflation rate reaches and exceeds 29.83 %. Similarly, financial development impact greatly on growth in Nigeria when the rate of inflation is below a threshold of 10.07 % but dissipates when inflation rate reaches and exceeds 19.25 %. The results imply that policymakers in these countries should take inflation into account when devising policies to promote financial development with the aim of generating economic growth. For without low or moderate inflation rates, such policies will not achieve their intended purposes.
Morphological Characterization of Sunflower Under Organic Fertilization and Seed Oil Content and Yield Pie
Authors: Lobão Erico , Andrade Albericio Pereira , Fernandes Pedro Dantas , Medeiros Everaldo Paulo , Santos Edson Mauro , Souto Jacob Silva , Lobão Dan Érico
Published: February 2017

This study aimed to evaluate the morphology of sunflower productivity and oil content of seeds and sunflower cake, cv. Helium 250, subjected to doses of organic manure on dryland. The design was a randomized block with six treatments and four blocks and nine observations. Treatments consisted of manure levels: T1 - without adding manure, T2 – 7.5 t ha
Enhancement of Gel Properties of Sardine Surimi using Squid Ink Tyrosinase in Combination with Coconut Husk Extract
Authors: Vate Naveen Kumar , Benjakul Soottawat
Published: February 2017

Squid ink tyrosinase (SIT) at levels of 300 and 500 KU kg−1 protein in combination with ethanolic extract of coconut husk (EEC) at concentrations of 1 and 1.25 g kg−1 protein was added into sardine surimi and the resulting gels were examined. The use of SIT (500 KU kg−1 protein) and EEC (1.25 g kg−1 protein) yielded the gel with the highest breaking force and deformation (p < 0.05). Nevertheless, the expressible moisture content and whiteness scores were markedly decreased. Protein cross-linking of surimi gels increased as evidenced by the decreased band intensity of myosin heavy chain (MHC). This coincided with the increased storage modulus (G'). Based on microstructure study, finer and more compact structure of surimi gels added with both SIT and EEC were obtained, compared to the control. Thus, SIT in conjunction with EEC could be used as the novel surimi gel strengthener.
Nonlocal elasticity theory for graphene modeling and simulation: prospects and challenges
Authors: Liew K. M. , Zhang Yang , Zhang L. W.
Published: February 2017

This paper presents a literature review of recent research studies on the applications of nonlocal elasticity theory in the modeling and simulation of graphene sheets (GSs). The history, development and excellent properties of GSs are introduced. The details of nonlocal elasticity theory are also presented. A systematic introduction to the application of nonlocal elasticity on linear modeling and nonlinear modeling for single-layer graphene sheets (SLGSs) and multilayered graphene sheets (MLGSs) is also provided. The necessity of determining mechanical parameters and nonlocal parameters is discussed. Recommendations for future work are particularly presented. This work is intended to review the development of GSs, give an introduction to the research studies on nonlocal elasticity theory in the modeling of GSs, and provide recommendations for future research.
Edge of chaos in reaction diffusion CNN model
Authors: Slavova Angela , Tetzlaff Ronald
Published: February 2017

In this paper, we study the dynamics of a reaction-diffusion Cellular Nonlinear Network (RD-CNN) nodel in which the reaction term is represented by Brusselator cell. We investigate the RD-CNN dynamics by means of describing function method. Comparison with classical results for Brusselator equation is provided. Then we introduce a new RD-CNN model with memristor coupling, for which the edge of chaos regime in the parameter space is determined. Numerical simulations are presented for obtaining dynamic patterns in the RD-CNN model with memristor coupling.
The algebraic size of the family of injective operators
Authors: Bernal-González Luis
Published: February 2017

In this paper, a criterion for the existence of large linear algebras consisting, except for zero, of one-to-one operators on an infinite dimensional Banach space is provided. As a consequence, it is shown that every separable infinite dimensional Banach space supports a commutative infinitely generated free linear algebra of operators all of whose nonzero members are one-to-one. In certain cases, the assertion holds for nonseparable Banach spaces.
Application of Kudryashov and functional variable methods to the strain wave equation in microstructured solids
Authors: Ayati Z. , Hosseini K. , Mirzazadeh M.
Published: February 2017

The aim of this paper is to obtain the exact solutions of the strain wave equation applied for illustrating wave propagation in microstructured solids. The effective Kudryashov and functional variable methods along with the symbolic computation system have been used to accomplish the purpose.
Nonlinear Responses and Stability of an Elastic Suspended Cable System Subjected to Parametrical External Excitations
Authors: Dai Liming , Xia Dandan , Chen Changping
Published: February 2017

This research investigates the nonlinear behavior and stability of an elastic suspended cable system under combined parametric and external excitations, with an approach of higher accuracy and reliability. Geometric nonlinearity of the cable and its in-plane and out-of-plane vibrations are considered. Multiple solutions of the system are found existing, corresponding to a single frequency of external excitation. The nonlinear stability of the cable system is investigated with focus on the influence of different system parameters. With the newly developed Periodicity-Ratio (P-R) method, the influences of different external excitations on the nonlinear vibrations of the cable system are examined, and a periodic-nonperiodic-chaotic region diagram is created for quantitatively and graphically identifying the stability and nonlinear behavior of the system.
Analytical solutions for the fractional diffusion-advection equation describing super-diffusion
Authors: Gómez Francisco , Escalante Enrique , Calderón Celia , Morales Luis , González Mario , Laguna Rodrigo
Published: February 2017

This paper presents the alternative construction of the diffusion-advection equation in the range (1; 2). The fractional derivative of the Liouville-Caputo type is applied. Analytical solutions are obtained in terms of Mittag-Leffler functions. In the range (1; 2) the concentration exhibits the superdiffusion phenomena and when the order of the derivative is equal to 2 ballistic diffusion can be observed, these behaviors occur in many physical systems such as semiconductors, quantum optics, or turbulent diffusion. This mathematical representation can be applied in the description of anomalous complex processes.
On the fractional differential equations with not instantaneous impulses
Authors: Zhang Xianmin , Agarwal Praveen , Liu Zuohua , Zhang Xianzhen , Ding Wenbin , Ciancio Armando
Published: February 2017

Based on some previous works, an equivalent equations is obtained for the differential equations of fractional-orderq∈(1, 2) with non-instantaneous impulses, which shows that there exists the general solution for this impulsive fractional-order systems. Next, an example is used to illustrate the conclusion.
Structural, Electronic, and Mechanical Properties of CoN and NiN: An Ab Initio Study
Authors: Amudhavalli A. , Manikandan M. , Jemmy Cinthia A. , Rajeswarapalanichamy R. , Iyakutti K.
Published: February 2017

The structural stabilities of cobalt mononitride (CoN) and nickel mono-nitride (NiN) were investigated among the crystal structures, namely, NaCl (B1), CsCl (B2), and zinc blende (B3). It was found that the zinc blende (B3) phase was the most stable phase for both nitrides. A pressure-induced structural phase transition from B3 to B1 phase was predicted in these nitrides. The computed lattice parameter values were in agreement with the experimental values and other theoretical values. The electronic structures reveal that these nitrides are metallic at zero pressure. The computed elastic constants indicate that CoN and NiN are mechanically stable in the B1 and B3 phases. The variations of the elastic constants, bulk modulus, shear modulus, Poisson’s ratio, and elastic anisotropy factor with pressure were investigated. The Debye temperature θ
D values are reported for both the nitrides in their B1 and B3 phases. The high-pressure NaCl phase of both CoN and NiN were found to be ferromagnetic.
Bonding Situation of Bis-gold Chloride Complexes with N-heterocyclic Carbene-Analogues [(AuCl)2-NHEMe] (E=C – Pb) based on DFT Calculations
Authors: Nguyen Thi Ai Nhung , Huynh Thi Phuong Loan , Duong Tuan Quang , Tran Duc Sy , Pham Van Tat , Dang Tan Hiep
Published: February 2017

We computationally investigated the structure and bonding situation of bis-gold chloride complexes, (AuCl)2, containing N-heterocyclic carbenes and analogues, called tetrylenes [(AuCl)2-NHEMe] (Au2-NHE) with E=C to Pb, using density functional theory (DFT) at the BP86 level with the basis sets def2-SVP, def2-TZVPP, and TZ2P+. The nature of the (AuCl)2-NHEMe bond in the Au2-NHE complexes was analyzed using charge and energy decomposition methods. The calculated equilibrium structures of the Au2-NHE complexes showed that the tetrylene ligands, NHEMe (E=C to Ge), are bonded in a head-on fashion to the bis-gold chloride fragment, (AuCl)2, and that the structure of Au2-NHSn contains a distorted head-on NHSn ligand, and the NHPb ligand is bonded in a side-on mode to the bis-gold chloride fragment, (AuCl)2. The theoretical calculation of bond dissociation energy (BDE) suggests that the bis-gold chloride-NHEMe bond strength increases from Au2-NHC to Au2-NHSi and then significantly decreases from Au2-NHSi to Au2-NHSn, and the strongest bond is exhibited for Au2-NHPb. The EDA-NOCV results and NOCV pairs indicate that the NHEMe ligand in the Au2-NHE complexes is a strong σ-donor and a weak π-acceptor, as well as a very weak π-donor (AuCl)2←{NHEMe}. The trend in the Au-E bond strength resulted from the increase in (AuCl)2←NHEMe donation. The results of this study may establish an interesting class of compounds worthy of further study.
Synthesis of N-doped Carbon Xerogel (N-CX) and its Applications for Adsorption Removal of Microcystin-LR
Authors: Wu Laiyan , Lan Jirong , Wang Songbo , Zhu Junjiang
Published: February 2017

N-doped carbon xerogel (N-CX) is synthesized and used for adsorption removal of microcystin-LR (MC-LR) from aqueous solution. Characterizations including N2 physisorption, TEM and XPS indicate that N atoms are doped into the N-CX and the material has porous structure. Adsorption tests show that the N-CX is efficient for MC-LR adsorption, with adsorption capacity of 1916.2 μg g−1, which is higher than that of commercial activated carbon (1034.13 μg g−1) and graphene oxide (1700 μg g−1). The material is recyclable after desorption treatment by washing with NaOH solution, with no loss of uptake within five cycles. Effect of initial MC-LR concentration, temperature, and pH on the adsorption behavior is further investigated, to realize the adsorption process, showing that the adsorption process obeys the Langmuir isotherm and pseudo-second-order equation. Thermodynamical calculation indicates that the adsorption of MC-LR onto N-CX is a spontaneous and exothermic process, with the Gibbs free energy (ΔG) of −16.1 kJ mol−1 and enthalpy (ΔH) of −18.45 kJ mol−1.
A FEW PUZZLES ABOUT WILLIAM JAMES' THEORY OF TRUTH
Authors: Hu Xingming ,   Nanjing University,  China
Published: February 2017

ABSTRACT William James makes several major claims about truth: (i) truth means agreement with reality independently of the knower, (ii) truth is made by human beings, (iii) truth can be verified, and (iv) truth is necessarily good. These claims give rise to a few puzzles: (i) and (ii) seem to contradict each other, and each of (ii), (iii), and (iv) has counter-intuitive implications. I argue that Richard Gale's interpretation of James' theory of truth is inadequate in dealing with these puzzles. I propose an alternative interpretation and show how it can solve these puzzles.
Desenvolvimento de um modelo de programação linear para o Problema da Construção de Grades Horárias em Universidades
Authors: Bucco Guilherme Brandelli , Bornia-Poulsen Camilo José , Bandeira Denise Lindstrom
Published: February 2017

Resumo: A construção de grades horárias dos cursos de uma universidade é um problema que deve ser enfrentado no início de todos os semestres e, por mobilizar quantidades significativas de recursos, se constitui numa importante tarefa administrativa. É classificado, em termos de complexidade computacional, como NP-hard, o que implica grande exigência de capacidade de processamento. É modelado de maneiras muito diversas, no intuito de se obter adequação quanto ao contexto educacional do país, às regras específicas da instituição ou aos objetivos específicos dos gestores, entre outros. Neste artigo, propõe-se um modelo matemático para construir grades de horários, otimizando a utilização de salas de aula. Para resolver o modelo proposto, desenvolveu-se um algoritmo que divide o problema para viabilizar o uso de programação linear inteira mista. Experimentos computacionais aplicados a uma base de dados real de uma universidade pública brasileira confirmaram o bom desempenho da abordagem proposta, reduzindo consideravelmente a quantidade de salas de aulas alocadas.
Sarduy, prisioneiro de Saint-Germain-des-Prés
Authors: Cozarinsky Edgardo ,   Universidad Nacional de Tres de Febrero,  Argentina
Published: February 2017

Resumen En este trabajo, traducido por primera vez al portugués, escrito en 1999 e incluido en el libro El pase del testigo (2001), Edgardo Cozarinsky realiza una lectura crítica de la situación de Severo Sarduy en Francia desde una perspectiva que sólo él, como testigo privilegiado de esa experiencia o incluso como confesor, puede ofrecer. El objeto de esa crítica es la “vampirización parisiense” de Sarduy, aquella que lo volvió un “prisionero” del grupo Tel Quel (con excepción de Roland Barthes) y lo obligó a “representar el papel de Sarduy”, a traicionarse. En cambio, sostiene Cozarinsky, la auténtica voz de Sarduy debe leerse precisamente en esa zona que para tantos de esos parisinos resultaba ilegible: en el mestizaje étnico y cultural sostenidos en un gesto de simultáneas audacia y liviandad que conducen a la ruina de todo origen y toda meta, a una afirmación de lo cubano y lo latinoamericano cuya complejidad pone a Sarduy en una serie que nace con Rubén Darío y pasa por José Lezama Lima.
Universal Health Coverage through Community Nursing Services: China vs. Hong Kong
Authors: Chan Wai Yee , Fung Ita M , Chan Eric
Published: February 2017

ABSTRACT Objective: this article looks at how the development of community nursing services in China and Hong Kong can enhance universal health coverage. Methods: literature and data review have been utilized in this study. Results: nursing services have evolved much since the beginning of the nursing profession. The development of community nursing services has expanded the scope of nursing services to those in need of, not just hospital-level nursing care, but more holistic care to improve health and quality of life. Conclusion: despite the one-country-two-systems governance and the difference in population and geography, Hong Kong and China both face the aging population and its complications. Community nursing services help to pave the road to Universal Health Coverage.
Advanced Practice Nursing: A Strategy for Achieving Universal Health Coverage and Universal Access to Health
Authors: Bryant-Lukosius Denise , Valaitis Ruta , Martin-Misener Ruth , Donald Faith , Peña Laura Morán , Brousseau Linda
Published: February 2017

ABSTRACT Objective: to examine advanced practice nursing (APN) roles internationally to inform role development in Latin America and the Caribbean to support universal health coverage and universal access to health. Method: we examined literature related to APN roles, their global deployment, and APN effectiveness in relation to universal health coverage and access to health. Results: given evidence of their effectiveness in many countries, APN roles are ideally suited as part of a primary health care workforce strategy in Latin America to enhance universal health coverage and access to health. Brazil, Chile, Colombia, and Mexico are well positioned to build this workforce. Role implementation barriers include lack of role clarity, legislation/regulation, education, funding, and physician resistance. Strong nursing leadership to align APN roles with policy priorities, and to work in partnership with primary care providers and policy makers is needed for successful role implementation. Conclusions: given the diversity of contexts across nations, it is important to systematically assess country and population health needs to introduce the most appropriate complement and mix of APN roles and inform implementation. Successful APN role introduction in Latin America and the Caribbean could provide a roadmap for similar roles in other low/middle income countries.
O platô do VO2max não está associado à capacidade anaeróbia em indivíduos fisicamente ativos
Authors: SILVA Renata Gonçalves ,   Universidade de São Paulo, Brasil, SILVA-CAVALCANTE Marcos David , AZEVEDO Rafael de Almeida , LIMA-SILVA Adriano Eduardo , BERTUZZI Rômulo ,   Universidade Federal de Pernambuco, Brasil
Published: February 2017

Resumo O presente estudo teve como objetivo verificar se a incidência do platô está relacionada com a capacidade anaeróbia. Para tanto, nove indivíduos fisicamente ativos (idade: 23 ± 4 anos; massa corporal: 72,4 ± 8,2 kg; estatura: 176,4 ± 6,8 cm; VO2max: 41,3 ± 5,7 ml.kg-1.min-1) participaram do presente estudo. Eles foram submetidos aos seguintes testes, realizados em cicloergômetro: a) um teste incremental máximo para a determinação do VO2max; b) seis testes submáximos para determinar a demanda supramáxima de O2; c) um teste supramáximo para a determinação do déficit máximo acumulado de oxigênio (MAOD). O platô foi caracterizado quando a diferença do VO2 entre os dois últimos estágios do teste incremental foi ≤ 2,1 ml.kg-1.min-1. Foi observada uma correlação inversa, porém não significante, entre e o MAOD e o platô do VO2 (r = -0,61; p > 0,05). Dessa forma, parece que a capacidade anaeróbia não é fator decisivo para determinar a incidência de platô no VO2 em indivíduos fisicamente ativos.
“Burnout” em uma amostra de profissionais de Educação Física brasileiros
Authors: GUEDES Dartagnan ,   Universidade Norte do Paraná,  Brasil, GASPAR Eron
Published: February 2017

Resumo “Burnout” é resultado da exposição prolongada ao estresse laboral crônico com recuperação insuficiente. O presente estudo analisou a presença de “burnout” em uma amostra de profissionais de educação física da Região Metropolitana de Londrina, Paraná, Brasil. Foram reunidos para estudo 588 sujeitos (273 mulheres e 315 homens). A presença de “burnout” foi definida por intermédio da versão traduzida do Maslach Burnout Inventory. Definiu-se “burnout” pela sobreposição de elevados escores de exaustão emocional e despersonalização e baixo escore de realização profissional. Foi também tratado os efeitos de sexo, idade e características laborais (experiência na profissão, qualificação acadêmica, área de atuação profissional, jornada de trabalho semanal, locais de trabalho e ganho financeiro) nas três dimensões de “burnout”. Os resultados indicaram a presença de “burnout” em 10,2% da amostra selecionada. Homens relataram escores de reduzida realização profissional de maior gravidade que mulheres. Escores equivalentes à exaustão emocional e despersonalização foram significativamente mais elevados em profissionais com mais idade. Com relação às características laborais, maior experiência profissional, qualificação apenas na graduação, atividade no ensino básico, jornada de trabalho ≥ 40 horas/semana, pluriemprego e menor ganho financeiro aumentaram significativamente as chances de acometimento de “burnout”. Concluindo, os presentes achados podem ser empregados para delinear programas de intervenção e implementar mudanças no ambiente de trabalho destinado a aprimorar a saúde ocupacional e o bem-estar em geral dos profissionais de educação física.
Water quality of the São Gonçalo channel, urban and agricultural water supply in southern Brazil
Authors: Albertoni Edélti Faria ,   Universidade Federal do Rio Grande,  Brazil, Palma-Silva Cleber , Trindade Claudio Rossano , Furlanetto Leonardo Marques
Published: February 2017

ABSTRACT São Gonçalo channel connects Patos and Mirim lagoons, in South Brazil. This ecosystem is 70 Km long, and is a major regional source of urban and agricultural water supply, mainly for the municipality of Rio Grande, with ca. 250 thousand citizens. This study aims to diagnose their water quality by measuring benthic invertebrates (Shannon-Wiener diversity index, richness and abundance), use of a BMWP biotic index, physical and chemical evaluation, and applying a trophic state index. The BMWP index showed predominance of taxa indicating altered conditions and polluted waters (Sarcodina and Hydracarina). The abiotic variables indicated eutrophicated waters, chlorophyll values characteristic of eutrophic environments (>2.9 µg. L–1), low N:P rates in sediment and water, with nitrogen limitation during most periods studied. The results of trophic state indexes indicated mesotrophic and eutrophic conditions, reaching hipereutrophic periods. The highest TSI were in Piratini river, in April 2009 and February 2011, coinciding with rice crop leaching. These results regarding nutrient concentration, nitrogen and phosphorus stoichiometry and biotic index support the need to evaluate the occupation of the surroundings of this water supply.
O Conceito de Imitação no Jovem Friedrich Schlegel
Authors: Faustino Sílvia ,   Universidade Federal da Bahia,  Brazil
Published: February 2017

RESUMO: Tomando por base o ensaio Über das Studium der griechschen Poesie (Sobre o estudo da poesia grega), este trabalho tem por objetivo investigar o conceito de imitação no pensamento do jovem Friedrich Schlegel. Além de explicitar dois usos distintos do conceito - que aparece ora como imitação do real, ora como imitação dos antigos - pretende-se identificar oscilações e tensões terminológicas que possam esclarecer a postura filosófica do autor, frente à profunda crise de legitimidade, que, naquela época, atinge a concepção da arte como imitação da natureza. É intenção mostrar que, embora reconheça os aspectos negativos que a má aplicação do modelo clássico provoca na produção e na teoria da arte moderna, Schlegel também propõe um sentido positivo, à luz do qual a imitação pode ser harmonizada com os princípios filosóficos basilares de uma estética idealista de feição kantiana.
Crossing Borders. A Filosofia da Identidade e a Transculturalidade na Arte Contemporânea Africana
Authors: Rainsborough Marita ,   Universidade Christian Albrecht de Kiel, Germany
Published: February 2017

RESUMO: No centro da filosofia de Kwame A. Appiah encontra-se a questão da identidade. Partindo do conceito da liberdade de Mill, ele considera a criação de uma identidade pessoal, no sentido de individualidade particular, uma tarefa permanente - como projeto individual. Nesse contexto, os planos de vida não devem ser concebidos como genericamente rigorosos, mas sim incoerentes e muitas vezes mutantes. Com isso, a identidade não se deve entender como algo fixo e cerrado, porém, como uma espécie de mosaico de vários elementos que se encontram em reprogramação contínua - como formação híbrida. A construção da identidade encerra a narração de histórias de vida, tanto individual como coletiva. Os respectivos elementos podem recorrer a diferentes experiências transculturais, consoante a história coletiva e a história de vida do indivíduo. Assim, a transculturalidade é importante, não só para identidades coletivas, como também sempre em nível de identidade pessoal. O filósofo africano Achille Mbembe alude ao nomadismo do ser humano e à imersão e dispersão culturais associadas que se deixam ler como processos da transculturalidade. Na arte africana contemporânea, esses processos da formação da identidade refletem-se no transcultural. Como exemplos, devem ser apresentados os artistas Edson Chagas, Kehinde Wiley, Yinka Shonibare e Romuald Hazoumè, com obras selecionadas.
Histórias em quadrinhos: formando leitores
Authors: Santos Mariana Oliveira dos , Ganzarolli Maria Emilia
Published: February 2017

O foco do presente estudo são as histórias em quadrinhos e as possibilidades de incentivo de sua leitura na escola e na biblioteca. A pesquisa tem caráter bibliográfico, qualitativo e exploratório, resultante de um levantamento de projetos e trabalhos que utilizaram os quadrinhos na formação de leitores. Além da trajetória histórica dos quadrinhos no Brasil e de suas características de linguagem, buscou-se identificar, nos projetos e trabalhos selecionados, a participação do bibliotecário e do professor como mediadores entre os quadrinhos e as crianças. A pesquisa confirma a hipótese de que a história em quadrinhoo é um recurso muito eficiente como incentivo à leitura, além de um importante auxiliar no ensino, contribuindo para a formação de leitores mais competentes.
Mathematics as Discourse
Authors: Skovsmose Ole
Published: February 2017

Initial steps are taken towards an interpretation of the discourse of mathematics, by showing that a mathematical model does not represent, but re-present; that it is not objective, but that it invents its objects; and that it is not descriptive, but performative. Mathematics-based discursive acts become identified, as crucial elements in an interpretation of mathematics as discourse. The discursive acts are: (1) technological imagination, (2) hypothetical reasoning, (3) legitimation or justification, (4) realisation, and (5) dissolution of responsibility. Through such acts, mathematics exercises symbolic power and makes possible new forms of symbolic violence.
Quais Elementos Caracterizam uma Atividade de Modelagem Matemática na Perspectiva Sociocrítica?
Authors: Silva Cíntia da , Kato Lilian Akemi
Published: February 2017

A Modelagem Matemática é apontada por diversos autores como uma das tendências em Educação Matemática que pode contemplar a formação da cidadania por tratar, preferencialmente, de problemas advindos da realidade vivenciada pelos estudantes, propiciando a utilização de argumentos matemáticos para sua interpretação ou solução. A perspectiva sociocrítica da Modelagem é aquela que mais se identifica com esse propósito, contudo não tem sido explicitada nos trabalhos que relatam atividades de Modelagem com tais características. Embora diversos trabalhos apontem a presença das características gerais desta perspectiva, ela não costuma ser destacada como referência-chave no texto. Neste texto, propomos alguns elementos que caracterizam uma atividade de Modelagem Matemática, segundo a perspectiva sociocrítica, tomando por base alguns referenciais teóricos publicados no Brasil sobre este tema, e utilizamos esses elementos para analisar todos os relatos de experiência apresentados na VI Conferência Nacional sobre Modelagem em Educação Matemática segundo as características construídas.