bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assimilation Time As A Factor Of Performance: Impact On A New Generation Of Students
Authors: Mohrweis Lawrence C. , Pitt Kay C. 
Published: January 2016

This paper explores the issue of whether assimilation time has any bearing on the performance of students. Assimilation time is defined as the number of times during the week that a class meets. This study examined whether students would perform better in a 50-minute class that met three days a week versus a 75-minute class that met just two days a week. Assimilation time did make a difference (t-test, p = .0693). High-attending students, that is students that attend class more that ninety percent of the time, performed better with more assimilation time that high-attending students in sections with less assimilation time However, for “medium-attending” students there was no difference whether students attended class in a 50-minute class that met three days a week or a 75-minute class that met just two days a week.
Cross-Course Projects: Teaching Students On Changing Business Communication Methods
Authors: Flosi Alicen , Fraccastoro Kathy , Moss Gisele J. 
Published: January 2016

The current business environment requires various communication skills to succeed. The skills include the use of a number of technologies that were not available 20 years ago. For this research, students were required to complete a project with students not in their own class using alternative communication methods. A questionnaire was administered to the students after completion of the project and the results are presented in this paper.
Net Operating Working Capital, Capital Budgeting, And Cash Budgets: A Teaching Example
Authors: Turner James A. 
Published: January 2016

Many introductory finance texts present information on the capital budgeting process, including estimation of project cash flows. Typically, estimation of project cash flows begins with a calculation of net income. Getting from net income to cash flows requires accounting for non-cash items such as depreciation. Also important is the effect of changes in net operating working capital on cash flow. While students readily understand how to account for depreciation when calculating cash flow, they typically have much more difficulty understanding how and why changes in working capital affect cash flows. This paper develops a teaching example to show exactly how and why changes in net operating working capital affect cash flows. The example shows how to derive operating cash flows for a proposed project using the accrual accounting method and then shows a cash budget for the same project. Finally, the example shows that the discrepancy between the cash flows shown in the cash budget and the operating cash flows can be resolved by accounting for changes in working capital. A survey of students in an MBA managerial finance course indicates student satisfaction with the teaching example and gives evidence that students prefer the teaching example to explanations of the effect of working capital on project cash flows given in the assigned text.
Enterprise Risk Management In The Oil And Gas Industry: An Analysis Of Selected Fortune 500 Oil And Gas Companies’ Reaction In 2009 And 2010
Authors: Rogers Violet C. , Ethridge Jack R. 
Published: January 2016

In 2009, four of the top ten Fortune 500 companies were classified within the oil and gas industry. Organizations of this size typically have an advanced Enterprise Risk Management system in place to mitigate risk and to achieve their corporations’ objectives. The companies and the article utilize the Enterprise Risk Management Integrated Framework developed by the Committee of Sponsoring Organizations (COSO) as a guide to organize their risk management and reporting. The authors used the framework to analyze reporting years 2009 and 2010 for Fortune 500 oil and gas companies. After gathering and examining information from 2009 and 2010 annual reports, 10-K filings, and proxy statements, the article examines how the selected companies are implementing requirements identified in the previously mentioned publications. Each section examines the companies’ Enterprise Risk Management system, risk appetite, and any other notable information regarding risk management. One observation was the existence or non-existence of a Chief Risk Officer or other Senior Level Manager in charge of risk management. Other observations included identified risks, such as changes in economic, regulatory, and political environments in the different countries where the corporations do business. Still others identify risks, such as increases in certain costs that exceed natural inflation, volatility and instability of market conditions. Fortune 500 oil and gas companies included in this analysis are ExxonMobil, Chevron, ConocoPhillips, Baker Hughes, Valero Energy, and Frontier Oil Corporation. An analysis revealed a sophisticated understanding and reporting of many types of risks, including those associated with increasing production capacity. Specific risks identified by companies included start-up timing, operational outages, weather events, regulatory changes, geo-political and cyber security risks, among others. Mitigation efforts included portfolio management and financial strength. There is evidence that companies in later reports (2013) are more comprehensive in their risk management and reports as evidenced by their 10-K and Proxy Statements (Marathon Oil Corporation, 2013).
Distribution of Time Interval between the Modifications of Result Sets Cardinalities in Random Databases
Authors: Velcescu Letitia 
Published: January 2016

AbstractIn this paper, we propose a method to estimate the probability distribution of the time interval which ellapses between the modifications of the cardinality in a random database query’s result set. This type of database is important either in modeling uncertainty or storing data whose values follow a probability distribution. The result that we introduce is important from the point of view of the database optimization, providing a useful method for an integrated module. In previous research on random databases the sizes of some relational operations results were investigated. This kind of information is rather useful in an analytical database which provides decision-making support. The result we particularly aim to present in this paper concerns the transactional random databases, addressing its specific functionality. It will be proven that the interval of time between the cardinalities changes is exponentially distributed. The proof is based on the technique of the Markovian Jelinski-Moranda model, which is used in the reliability of software programs.
Proteine Bolognese
Authors: Cubarsi R. , Vázquez E. , Villaverde A. 
Published: January 2016

<p>Se modeliza la penetración de una versión modificada de la proteína verde fluorescente llamada GFP en el citoplasma y el núcleo de una célula de mamífero. El modelo matemático proporciona una primera aproximación al experimento, con una disminución progresiva de la tasa de fluorescencia a medida que la luminosidad total va aumentando hasta saturarse. Sin embargo, se detecta una desviación localizada del modelo propuesto, debida a un proceso que no se realiza de forma totalmente diferenciable. El fenómeno es explicable a partir de la irrupción brusca de GFP en el citoplasma y el núcleo por la debilitación o permeabilización de sus membranas, y por la obstrucción del flujo de GFP por la membrana nuclear. El modelo matemático proporciona pues información relevante sobre la desviación del patrón que se ha adoptado. Con la finalidad de unificar del Espacio Europeo de Educación Superior (EEES), y de acuerdo con las directrices del Proceso de Bolonia, las asignaturas de los nuevos planes de estudios han sufrido una re- visión a fondo de sus contenidos. Para que la nueva metodología de sus frutos, es necesario diseñar un temario muy optimizado, en el que cada tema entronque con temas de otras asignaturas. El caso presentado evidencia como la Modelización Matemática es útil para aplicar y revisar los conocimientos adquiridos en diversas asignaturas, de matemáticas y biología en este caso, además de ser una forma eficaz de estimular el aprendizaje, ya que muestra la utilidad de lo que se estudia.</p>
La resolución de problemas como instrumentos para la modelización matemática:Ejemplos para la vida real
Authors: Romero Sánchez Sixto , Rodríguez Isabel Mª , Benítez Rocío , Romero José , Salas Isabel Mª 
Published: January 2016

<p>ESPAÑOl: No hace muchos años que los investigadores en Educación Matemática han centrado su atención en el diseño de actividades basado en la modelización matemática de situaciones reales con el convencimiento de obtener una mayor garantía en la ganancia, por parte de nuestros alumnos, del aprendizaje matemático, y por ende en la enseñanza por parte de los enseñantes. El trabajo que presentamos, en el contexto del CURSO DE VERANO-2014-Matemáticas a lo largo de la vida, en las IV Jornadas de Modelización Matemática, pretende utilizar la Resolución de Problemas (RdP´s) como un instrumento útil y necesario para llegar al concepto de Modelización Matemática.</p><p>INGLÉS:</p><p>Not many years ago that researchers in mathematics education have focused on designing activities based on mathematical modelling of real situations with the conviction to get a better guarantee on profit, by our students, the mathematical learning, and thus teaching by the teachers. The work presented in the context of the Summer-2014-Mathematics throughout life, in the Fourth Conference on Mathematical Modelling, intends to use the Problem Solving (PS) as a useful and necessary tool to reach the concept of Mathematical Modelling.</p><p> </p>
Identidades de gênero no movimento funk: um estudo explanatório crítico de notícias jornalísticas brasileiras
Authors: Gomes Maria Carmen Aires 
Published: January 2016

<p style="margin-bottom: 0cm; widows: 0; orphans: 0;" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: medium;">http://dx.doi.org/10.5007/2175-8026.2016v69n1p183</span></span></span></p><p style="margin-bottom: 0cm; widows: 0; orphans: 0;" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: medium;">Neste artigo analiso as designações escolhidas pelos veículos <em>Tititi, Site R7 e Site G1</em> para representarem as MC’s Xuxu, Transnitta e Mulher Banana e as temáticas sobre transgeneridade, sexualidade e sexo, geradas em função da heterogeneidade textual e discursiva. Meu objetivo é problematizar a forma como as práticas midiáticas jornalísticas (tanto de revista, como de jornal) designam, denominam e atribuem vozes às MC’s, que são transmulheres, corpos femininos generificados. Serão analisados três textos noticiosos extraídos da revista popular Tititi e dos sites R7 9 (Grupo Record) e G1 (Rede Globo de produções), que fazem parte de um <em>corpus</em> documental do projeto <em><strong>Corpo na mídia impressa e televisiva: representações de vulnerabilidade social e diferença na sociedade contemporânea.</strong></em> Os dados serão analisados à luz de uma proposta transdisciplinar que dialoga os princípios epistemológicos da análise de discurso textualmente orientada – ADTO – (FAIRCLOUGH, 2001; 2003; CHOULIARAKI E FAIRCLOUGH, 1999), das pesquisas epistemológicas e ontológicas sobre identidades de gênero, sexualidade e sexo (LOURO, 2007; BUTLER, 2010; <span style="color: #000000;">CESAR; 2014;</span> BENTO, 2015) e do debate sobre corpo como construto semiótico (LE BRETON, 2003, 2010, 2014). </span></span></span></p><p style="margin-bottom: 0cm; widows: 0; orphans: 0;" align="JUSTIFY"> </p><p style="margin-bottom: 0cm; widows: 0; orphans: 0;" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: medium;"><br /></span></span></span></p>
O entrelugar da tradução literária: as exigências do mercado editorial e suas implicações na formação de identidades culturais
Authors: Branco Sinara De Oliveira , Maia Iá Niani Belo 
Published: January 2016

<p>http://dx.doi.org/10.5007/2175-8026.2016v69n1p213</p><p>O presente artigo busca refletir sobre a tradução literária, considerando os efeitos advindos das necessidades do mercado editorial, que apontam o que deve ser traduzido e como, influenciando a formação de identidades culturais. Para tanto, serão discutidas questões teóricas sustentadas especialmente por Venuti (1995; 1998), Arrojo (1996), Katan (1999), Lefevere (2003) e Berman (2012). Cientes de que a tradução de um texto literário demanda do tradutor a aplicação de estratégias tradutórias que satisfaçam o mercado editorial, bem como o público alvo, tomamos por base o contexto anglo-americano, elaboramos uma reflexão para entender como se desenvolve a construção da imagem do “Outro” e como as relações de poder se realizam nas estruturas sociais a partir da tradução literária.</p><p> </p>
The Relationship between the Feeling of Psychological Security among Talented Adolescents at Gifted and Talented Schools in Ajloun Governorate in Jordan and Academic Achievement Level
Authors: Alnawasreh Faisal Issa 
Published: January 2016

<p>This study aims to disclose the relationship between the feeling of psychological security among talented adolescents at Gifted and Talented Schools in Ajloun Governorate/Jordan and Academic Achievement level, and its relationship to some demographic factors: (gender, class). In order to achieve the objectives of the study, it was used Maslow scale of feeling of security, and it was developed by Al-diwani and Al-dirani (1983) to match the Jordanian Arab environment, and to identify and ensure validity and reliability, the sample consisted of 100 talented students were selected randomly from class of supreme basic and secondary schools. It was analyzed the data through the arithmetic averages standard deviations and value of (t), the multi variance analysis correlation coefficient between psychological security &amp; academic achievement, and the study came up with some results including: that the level of psychological security between the talented students ranged between medium, high. And there is statistically significant effect when (α≤0.05) between psychological security and its dimensions at class factor for the seventh class (12 years) and there is statistically significant effect when α≤0.05 between psychological security and its dimensions at the gender factor in favor of females. And there is a positive correlation relationship between psychological security and its dimensions and academic achievement among the talented. And the results were discussed in the light of the theoretical framework &amp; previous studies, it was suggested some recommendations on the basis of the results of the study.</p>
John Zorn et Tzadik : genèse d’un projet discographique
Authors: Féron François-Xavier 
Published: January 2016

Fondée en 1995 par John Zorn, Tzadik est une maison de disques indépendante qui a publié en 20 ans plus de 700 albums répartis à travers une douzaine de collections différentes. À l’image de son directeur artistique, Tzadik se distingue par son éclectisme et son goût prononcé pour l’expérimentation sonore et l’hybridation des genres musicaux. Afin de mieux comprendre les origines et les spécificités de cette maison de disques, nous nous sommes penché sur la carrière et la personnalité de Zorn, revenant sur ses collaborations avec différentes maisons de disques dont Nonesuch, rappelant l’importance qu’il accorde au contenu visuel de ses albums, soulignant ses liens étroits avec le Japon où son actuel associé Kazunori Sugiyama lui avait confié dès 1992 la direction artistique du sous-label (sous-étiquette) Avant.
Diastereoselective Synthesis of Substituted Tetrahydroisoquinolines and Isoindolines via a Silver(I) Triflate‐Promoted Tandem Reaction
Authors: Xing Siyang , Ren Jing , Wang Kui , Cui Hong , Yan Han , Li Wenrui 
Published: January 2016

AbstractA new silver(I) triflate‐promoted tandem reaction comprising the ring opening of aziridines and a Michael reaction has been developed. Using secondary amines or primary amines as nucleophiles, this methodology allows for the synthesis of cis‐1‐alkyl‐4‐aminotetrahydroisoquinolines or cis‐1,3‐disubstituted isoindolines in good yields with excellent diastereoselectivities, respectively. Besides, easy operation and mild reaction conditions are also notable features of this tandem reaction.magnified image
Asymmetric α‐Hydroxylation of β‐Indanone Esters and β‐Indanone Amides Catalyzed by C‐2′ Substituted Cinchona Alkaloid Derivatives
Authors: Wang Yakun , Yin Hang , Qing Hai , Zhao Jingnan , Wu Yufeng , Meng Qingwei 
Published: January 2016

AbstractThe highly catalytic asymmetric α‐hydroxylation of β‐indanone esters and β‐indanone amides using peroxide as the oxidant was realized with a new C‐2′ substituted Cinchona alkaloid derivatives. The two enantiomers of α‐hydroxy‐β‐indanone esters could be obtained by simply changing the oxidant. This protocol allows a convenient access to the corresponding α‐hydroxy‐β‐indanone esters and α‐hydroxy‐β‐indanone amides with up to 99% yield and 98% ee.magnified image
Asymmetric Transfer Hydrogenation of Ketones with Modified Grubbs Metathesis Catalysts: On the Way to a Tandem Process
Authors: Renom‐Carrasco Marc , Gajewski Piotr , Pignataro Luca , de Vries Johannes G. , Piarulli Umberto , Gennari Cesare , Lefort Laurent 
Published: January 2016

AbstractHerein, we report the successful transformation of a 1st generation Grubbs metathesis catalyst into an asymmetric transfer hydrogenation (ATH) catalyst. Upon addition of a chiral amine ligand, an alcohol and a base, the 1st generation Hoveyda–Grubbs catalyst (HG‐I) was found to promote the enantioselective reduction of acetophenone to 1‐phenylethanol. After optimizing the order of addition and the reaction conditions, the substrate scope was assessed leading to enantiomeric excesses up to 97% ee. NMR experiments were run in order to get information about the in situ‐generated ATH catalyst. Furthermore, the possibility to perform olefin metathesis and ketone transfer hydrogenation sequentially in one pot was demonstrated, and the first tandem olefin metathesis–ketone asymmetric transfer hydrogenation was carried out.magnified image
A 31‐year trend of the hourly precipitation over South China and the underlying mechanisms
Authors: Fu Shenming , Li Deshuai , Sun Jianhua , Si Dong , Ling Jian , Tian Fuyou 
Published: January 2016

AbstractOn the basis of a newly developed intensive hourly observational precipitation dataset, the precipitation trend of South China was investigated. Results indicate that the hourly precipitation over South China featured a significant increasing trend, particularly for the extreme precipitation category. The trend is mainly due to the increasing frequency of the precipitation events. A possible mechanism accounting for this increasing trend was proposed: the global warming may be the original forcing for the trend, through its modulation on activities of the western Pacific subtropical high, but the low‐level vorticity is the most important direct trigger.
Transapical implantation of a self‐expandable aortic valve prosthesis utilizing a novel designed positioning element
Authors: Liu Xiaopeng , Tang Yue , Luo Fuliang , Tian Yi , Li Kai , Sun Jiakang , Jia Liujun , Wang Wei 
Published: January 2016

ObjectivesTo evaluate a new transapical system which utilizes a novel designed positioning element and a two‐step positioning mechanism for easy and accurate implantation of transcatheter valves.BackgroundTranscatheter aortic valve implantation is an important treatment option for non‐surgical patients with severe aortic stenosis. However, accurate placement of the transcatheter valve remains challenging.MethodsSelf‐expandable aortic valve prosthesis with a flexibly connected, annulus‐like positioning element was implanted through a transapical approach in 12 pigs. The positioning element was separated and can be released independent of the valve prosthesis. During valve implantation, firstly, the positioning element was unsheathed and fixed into the aortic sinus. Then, the prosthetic valve was guided to an anatomically oriented position and deployed. Six animals were followed up to 180 days.ResultsWith the help of the positioning element, all 12 valves were successfully deployed at the anticipated site. The valve release procedure took an average of 7.3 ± 2.5 min. The mean transvalvular pressure gradient was 2.8 ± 1.1 mm Hg at valve deployment. Of the six chronic animals, the mean transvalvular pressure gradient was 3.0 ± 1.0 mm Hg on day 7, and 2.9 ± 1.6 mm Hg on day 180 (P = 0.91). No migration, embolization, or coronary obstruction was observed during surgery and at necropsy. Pathological examination showed anatomically correct positioning of the prosthetic valve without signs of thrombosis or calcification.ConclusionsIn this study, we confirmed the feasibility of the J‐Valve transapical system for transapical implantation through a two‐step process. Satisfactory hemodynamic and pathological performance during a follow‐up of 180 days was demonstrated. © 2016 Wiley Periodicals, Inc.
Direct Observation of an Oxepin from a Bacterial Cytochrome P450‐Catalyzed Oxidation
Authors: Stok Jeanette E. , Chow Sharon , Krenske Elizabeth H. , Farfan Soto Clementina , Matyas Csongor , Poirier Raymond A. , Williams Craig M. , De Voss James J. 
Published: January 2016

AbstractThe cytochromes P450 are hemoproteins that catalyze a range of oxidative C−H functionalization reactions, including aliphatic and aromatic hydroxylation. These transformations are important in a range of biological contexts, including biosynthesis and xenobiotic biodegradation. Much work has been carried out on the mechanism of aliphatic hydroxylation, implicating hydrogen atom abstraction, but aromatic hydroxylation is postulated to proceed differently. One mechanism invokes as the key intermediate an arene oxide (and/or its oxepin tautomer). Conclusive isolation of this intermediate has remained elusive and, currently, direct formation of phenols from a Meisenheimer intermediate is believed to be favored. We report here the identification of a P450 [P450cam (CYP101A1) and P450cin (CYP176A1)]‐generated arene oxide as a product of in vitro oxidation of tert‐butylbenzene. Computations (CBS‐QB3) predict that the arene oxide and oxepin have similar stabilities to other arene oxides/oxepins implicated (but not detected) in P450‐mediated transformations, suggesting that arene oxides can be unstable terminal products of P450‐catalyzed aromatic oxidation that can explain the origin of some observed metabolites.
Study of production and the stability of styrallyl acetate nanocapsules using complex coacervation
Authors: Xiao Zuobing , Li Wei , Zhu Guangyong , Zhou Rujun , Niu Yunwei 
Published: January 2016

AbstractThe styrallyl acetate (SA) nanocapsules were prepared using complex coacervation with gelatin (G) and gum arabic (GA) as the wall materials. The stability of the nanocapsules formed at different pH (4.8, 4.5, 4.2, 3.9, 3.6), wall concentration (0.5%, 1.0%, 1.5%, 2.0%, 2.5%) and the ratio of oil/emulsifier (1:2, 1:1, 2:1, 3:1) were evaluated. The results showed that the formation and stability of nanocapsules were influenced by these factors. The optimal process conditions were determined depending on the most stable aqueous system with the highest encapsulation efficiency. The optimum conditions were as follows: pH 4.5, the total concentration 1% and the ratio of core oil/emulsifier 1:1. The results of nuclear magnetic resonance (NMR) indicated that SA was encapsulated in G and GA successfully and the structure of SA and the wall materials was not changed. The further stability of optimal nanocapsules was assessed. Nanocapsules loaded with oil presented good stability over 8 months. Furthermore, the thermal stability was analysed by thermogravimetric analysis (TGA) and the results showed that the SA nanocapsules exhibited excellent thermal stability than the pure oil. Copyright © 2016 John Wiley & Sons, Ltd.