bluuebunny/crossref_metadata_2025_split huggingface dataset:
O PIBID E A ESCOLA: OS SENTIDOS DAS TECNOLOGIAS DIGITAIS NA FORMAÇÃO INICIAL DOCENTE
Authors: Cervi Gicele Maria , Favere Juliana 
Published: September 2015

<p>Este artigo problematiza a escola e sua relação com as tecnologias digitais. A pesquisa tem como objeto discutir um dos objetivos do Programa de Bolsa de Iniciação à Docência (PIBID) que é “inserir os licenciandos no cotidiano de escolas da rede pública de educação, proporcionando-lhes oportunidades de criação e participação em experiências metodológicas, tecnológicas”. A partir de uma experiência de formação, foram analisadas percepções de um grupo de bolsistas de Iniciação à Docência (ID) sobre o uso das tecnologias digitais nas práticas pedagógicas. Os acordos teóricos estão centrados em Michel Foucault (1997), Gilles Deleuze (2006), Pierre Lévy (2011), Paula Sibilia (2012) e Marco Silva (2010). Como metodologia utilizou-se pesquisa bibliográfica e pesquisa de campo, como instrumentos de coleta de dados: um questionário e materiais (diários) produzidos por um grupo de bolsistas de Iniciação à Docência (ID) do PIBID que participou de uma formação em tecnologias digitais no Laboratório Interdisciplinar de Formação de Educadores (LIFE). A partir dos dados coletados pode-se inferir que as tecnologias digitais estão presentes na vida dos escolares e nas escolas, mas, sua utilização em práticas pedagógicas ainda está distante do cotidiano dos sujeitos pesquisados. Para os estudantes pesquisados elas são consideradas ferramentas que podem contribuir para os processos de ensinar-aprender nas escolas. Eles reconhecem a importância das tecnologias digitais nos currículos de formação inicial, no entanto, apresentam resistências quanto a sua utilização, tanto nas práticas do PIBID, como nas aulas em que frequentam na Universidade. A oficina foi um momento de experimentação e de muitas reflexões para os participantes. Projetos como o PIBID aliado ao LIFE e o Prodocência caracterizam-se como espaços de diálogos e de práticas que possibilitam experimentar outros sentidos para os usos das tecnologias nos cotidianos escolares e talvez outro sentido para a escola.</p><p> </p>
Análise Textual Discursiva: os movimentos da metodologia de pesquisa
Authors: Pedruzzi Alana Das Neves , Schmidt Elisabeth Brandão , Galiazzi Maria do Carmo , Podewils Tamires Lopes 
Published: September 2015

<p><strong><em>Resumo: </em></strong>Este artigo discorre sobre os movimentos de aprendizagem inerentes à metodologia Análise Textual Discursiva - ATD, proposta por Moraes e Galiazzi, vivenciados no âmbito de disciplina desenvolvida junto ao Programa de Pós-Graduação em Educação; Programa de Pós-Graduação em Educação Ambiental e Programa de Pós-Graduação em Educação em Ciências – Química da Vida e Saúde da Universidade Federal do Rio Grande - FURG. Foi constituída uma comunidade aprendente de mestrandos, doutorandos e professoras com foco no estudo e prática da ATD. O <em>corpus</em> de análise abarcou os resumos das teses e dissertações dos Programas de Pós-Graduação em Educação Ambiental e Educação e Educação em Ciências – Química da Vida e Saúde, publicadas nos últimos cinco anos. Mostramos, neste artigo, de forma progressiva, o curso da Análise Textual Discursiva culminando na sua arte final - o metatexto, que é apresentado em sua íntegra. O metatexto discorre sobre uma das grandes categorias elencadas durante a análise - “Educação crítica transformadora: visão de educação e referencial teórico”, onde são construídos argumentos sobre a singularidade da Educação Ambiental. A experiência vivenciada em uma comunidade aprendente em torno da aprendizagem da Análise Textual Discursiva possibilitou um pensar coletivo sobre os múltiplos caminhos da pesquisa e na própria constituição dos pesquisadores.</p><p><strong><em>Palavras-Chave:</em></strong><strong><em> </em></strong>Análise Textual Discursiva. Comunidade Aprendente. Educação Ambiental.</p>
Topographic height dependence of internal wave generation by tidal flow over random topography
Authors: Zhao Jiajun , Zhang Likun , Swinney Harry L. 
Published: September 2015

AbstractInternal waves (IWs) generated by tidal flow over the seafloor play a critical role in ocean circulation and climate. We determine the dependence of the radiated IW power on topographic parameters in numerical simulations of tidal flow over two‐dimensional random topographic profiles that have the spectrum of oceanic abyssal hills. The IW power increases as the horizontal spatial resolution scale is decreased, but below a certain spatial scale the power saturates at a level less than the linear theory prediction. For increasing topographic RMS height Hrms the emergent interference of the tide and the IWs from different generation sites leads to a transition in the IW power dependence on Hrms from quadratic to linear. This transition in the scaling of the IW power depends on the slopes of a valley's nearest neighboring peaks. Our results should guide the modeling of IW generation by tidal flow over small‐scale ocean topography.
Direct aerosol effects during periods of solar dimming and brightening hidden in the regression residuals: Evidence from Potsdam measurements
Authors: Vetter Tobias , Wechsung Frank 
Published: September 2015

AbstractA recent empirical study of Stanhill et al. (2014), which was based on the Angstrom‐Prescott relationship between global radiation and sunshine duration, was evaluated. The parameters of this relationship seemed to be rather stable across the dimming and brightening periods. Thus, the authors concluded that the variation in global radiation is more influenced by changes in cloud cover and sunshine duration than by the direct aerosol effects. In our study, done for the Potsdam station (one of six globally distributed stations, the source of one of the longest observational records and closely located to former hot spots of aerosol emission), we tested and rejected the hypothesis that the dimming of global radiation directly caused by aerosols is negligible. The residuals of the Angstrom‐Prescott regression reveal a statistically significant positive temporal trend and a temporal level segmentation. The latter was consistent with the temporal emission patterns around Potsdam. The trend in the residuals only disappeared when the model intercept varied according to the temporal level segmentation. The magnitude of the direct aerosol effect on the level changes in global radiation derived from the modified Angstrom‐Prescott relationship was in the range indicated in previous studies. Thus, from here, a specific request cannot be made for a revision of current climate models state‐of‐the‐art representation of both the cooling effect directly caused by aerosols and the temperature sensitivity to the increase of greenhouse gases.
Successfully treated life‐threatening upper gastrointestinal bleeding from fistula between gastroduodenal artery pseudoaneurysm and duodenum
Authors: Kohama Keisuke , Ito Yusuke , Kai Tatsuro , Kotani Joji , Nakao Atsunori 
Published: September 2015

CaseAn 85‐year‐old man was admitted to the hospital, underwent laparotomy, and was diagnosed with diffuse peritonitis due to perforation of gastric ulcer. Omental patch repair was carried out. After surgery, he suddenly vomited blood and manifested hypovolemic shock. An emergency upper gastrointestinal endoscopy was carried out immediately. However, the bleeding source was not visible. Dynamic‐enhanced abdominal computed tomography showed a pseudoaneurysm of the gastroduodenal artery‐communicating duodenal lumen with extravasation. Next, the patient underwent angiography for embolization. However, selective arterial embolization was not successful.OutcomeFinally, duodenotomy was carried out. The fistula between the pseudoaneurysm and duodenal lumen was directly ligated. An aneurysm could be clearly identified by previous findings.ConclusionsGastroduodenal artery aneurysms are very uncommon but possibly lethal if they rupture. This life‐threatening condition requires rapid diagnosis and treatment. Minimally invasive treatment is the preferred therapy for gastroduodenal artery aneurysm; however, acute care surgery should be considered without hesitation when conditions are critical.
Selbstorganisation eines riesigen tetraedrischen 3d‐4f‐Einzelmolekülmagneten innerhalb eines Polyoxometallatsystems
Authors: Ibrahim Masooma , Mereacre Valeriu , Leblanc Nicolas , Wernsdorfer Wolfgang , Anson Christopher E. , Powell Annie K. 
Published: September 2015

AbstractEin tetraedrisches heterometallisches Polyoxometallat (POM) [Dy30Co8Ge12W108O408(OH)42(OH2)30]56−, das Einzelmolekülmagnet(SMM)‐Verhalten zeigt, wird beschrieben. Das Riesenmolekül enthält die größte Zahl an 4f‐Ionen aller bisher beschriebenen POM und ist das erste POM mit zwei verschiedenen 3d‐4f‐ und 4f‐Koordinationsclustern im selben POM‐Netzwerk.
Self‐Assembly of a Giant Tetrahedral 3 d–4 f Single‐Molecule Magnet within a Polyoxometalate System
Authors: Ibrahim Masooma , Mereacre Valeriu , Leblanc Nicolas , Wernsdorfer Wolfgang , Anson Christopher E. , Powell Annie K. 
Published: September 2015

AbstractA giant tetrahedral heterometallic polyoxometalate (POM) [Dy30Co8Ge12W108O408(OH)42(OH2)30]56−, which shows single‐molecule magnet (SMM) behavior, is described. This hybrid contains the largest number of 4f ions of any polyoxometalate (POM) reported to date and is the first to incorporate two different 3d–4f and 4f coordination cluster assemblies within same POM framework.
Compassionate Witnessing in the Face of Erasure: A Commentary on “Crows on the Cradles: Palestinian Mothers at a Frontline Vortex; Reflections on the Psychology of Occupation” by Judy Roth and Salwa Duaibis
Authors: Ad‐Dab'bagh Yasser 
Published: September 2015

AbstractIn response to a very moving article by Roth and Duaibis, I present commentary on the process of compassionate witnessing. Compassion, both as a concept and as a derivative of parental devotion, is explained and its importance to psychoanalysis discussed. Reflections on the implications of this concept in social contexts as well as the risks to the witness and the sustainability of compassion are shared. I conclude that the notion proposed by Roth and Duaibis of concentric circles of compassionate witnessing by people with a healthy capacity for maternal functions is likely the solution to alleviate the erasure resulting from chronic brutal suffering. Copyright © 2015 John Wiley & Sons, Ltd.
A case study of Beijing bus crew scheduling: a variable neighborhood‐based approach
Authors: Ma Jihui , Ceder Avishai (Avi) , Yang Yang , Liu Tao , Guan Wei 
Published: September 2015

SummaryCrew scheduling for bus drivers in large bus agencies is known to be a time‐consuming and cumbersome problem in transit operations planning. This paper investigates a new meta‐heuristics approach for solving real‐world bus‐driver scheduling problems. The drivers' work is represented as a series of successive pieces of work with time windows, and a variable neighborhood search (VNS) algorithm is employed to solve the problem of driver scheduling. Examination of the modeling procedure developed is performed by a case study of two depots of the Beijing Public Transport Group, one of the largest transit companies in the world. The results show that a VNS‐based algorithm can reduce total driver costs by up to 18.1%, implying that the VNS algorithm may be regarded as a good optimization technique to solve the bus‐driver scheduling problem. Copyright © 2015 John Wiley & Sons, Ltd.
Quantification of complanatoside A in rat plasma using LC‐MS/MS and its application to a pharmacokinetic study
Authors: Li Nan , Liu Yue , Cao Yuchen , Wei Zhouxia , Pang Li , Wang Jianmeng 
Published: September 2015

AbstractComplanatoside A is a flavonol glycoside isolated from Astragalus complanatus, and currently it is used as a quality control index for A. complanatus in the 2010 edition of the Chinese Pharmacopoeia. For the first time, a simple and sensitive LC‐MS/MS method was developed for the determination of complanatoside A in rat plasma over the range of 2.3–575 ng/mL. Complanatoside A was extracted from plasma by a protein precipitation procedure, separated by LC and detected by MS/MS in positive electrospray ionization mode. The method was validated for selectivity, carryover, sensitivity, linearity, extraction recovery, matrix effect, accuracy, precision and stability studies. The lower limit of quantification was established at 2.3 ng/mL. Intra‐ and inter‐day precisions (LLOQ, low‐QC, med‐QC and high‐QC) were <7.9%, and accuracies were between 94.0 and 105.1%. Matrix effect was acceptable (97.9–103.0%) and extraction recovery was reproducible (88.5–94.4%). Complanatoside A was stable in the investigated conditions. The method was applied to the pharmacokinetics of complanatoside A in rats. Copyright © 2015 John Wiley & Sons, Ltd.
The Nitrile‐Forming Enzyme 7‐Cyano‐7‐Deazaguanine Synthase from Geobacillus kaustophilus: A Reverse Nitrilase?
Authors: Winkler Margit , Dokulil Katharina , Weber Hansjörg , Pavkov‐Keller Tea , Wilding Birgit 
Published: September 2015

Abstract7‐Cyano‐7‐deazaguanine synthase (E.C. 6.3.4.20) is an enzyme that catalyzes the formation of a nitrile from a carboxylic acid and ammonia at the expense of ATP. The protein from G. kaustophilus was heterologously expressed, and its biochemical characteristics were explored by using a newly developed HPLC‐MS based assay, 31P NMR, and a fluorescence‐based thermal‐shift assay. The protein showed the expected high thermostability, had a pH optimum at pH 9.5, and an apparent temperature optimum at 60 °C. We observed strict substrate specificity of QueC for the natural substrate 7‐carboxy‐7‐deazaguanine, and determined AMP and pyrophosphate as co‐products of preQ0.
Biocatalytic Access to Chiral Polyesters by an Artificial Enzyme Cascade Synthesis
Authors: Schmidt Sandy , Büchsenschütz Hanna C. , Scherkus Christian , Liese Andreas , Gröger Harald , Bornscheuer Uwe T. 
Published: September 2015

AbstractChiral polyesters in general can be employed for versatile biomedical purposes, but in vitro enzyme catalyzed biocatalytic routes by a multiple‐step cascade to make these functional biodegradable chiral polyesters have been hardly investigated. Recently, we developed an artificial three‐step enzymatic cascade synthesis by combining an alcohol dehydrogenase (ADH), a Baeyer–Villiger monooxygenase (BVMO) and a lipase (CAL‐A). Here, we extended this cascade for the synthesis of chiral methyl‐substituted oligo‐ɛ‐caprolactone derivatives to achieve both, the generation of chirality in a monomer and the subsequent polymerization. Several substrates were examined and provided access to functionalized chiral compounds in high yields (up to >99 %) and optical purities (up to >99 % ee). By subsequent enzymatic enantioselective ring opening of the enantiopure monomers, oligomeric lactones were successfully synthesized.
Digital Imaging of Lithographic Materials by Radical Photopolymerization and Photonic Baking with NIR Diode Lasers
Authors: Brömme Thomas , Schmitz Christian , Oprych Dennis , Wenda Andre , Strehmel Veronika , Grabolle Markus , Resch‐Genger Ute , Ernst Steffen , Reiner Knut , Keil Dietmar , Lüs Patrick , Baumann Harald , Strehmel Bernd 
Published: September 2015

AbstractPhoto‐initiated cross‐linking of multifunctional acrylic esters in polymeric binders was investigated based on digital imaging using the Computer‐to‐Plate (CtP) technology applying laser exposure in the near‐infrared (NIR). Generation of initiating radicals occurs by electron transfer from the excited state of the NIR‐sensitizer to the radical generator, an onium salt. Iodonium salts derived from several borates and those with the bis(trifluoromethylsulfonyl)imide anion resulted in lithographic materials with high sensitivity. Photo‐induced electron transfer plays a major function to generate initiating radicals by a sensitized mechanism but thermal events also influence sensitivity of the coating. Internal conversion was the major deactivation pathway while a certain fraction of NIR‐dye fluorescence was also available. A line shape focused laser system with emission in the NIR was successfully used to bake the materials.
A Robust Strategy for “Living” Growth of Lead Sulfide Quantum Dots
Authors: Shrestha Aabhash , Jin Bo , Kee Tak W. , Qiao Shi Zhang , Dai Sheng 
Published: September 2015

AbstractColloidal quantum dot (QD) nanocrystals of lead sulfide (PbS) have promising applications in diverse scientific fields due to their size‐tuned band gaps, but the batch synthesis of differently sized QDs is cumbersome. In this paper, we report a robust method to synthesize monodisperse PbS QDs through a novel “living” growth process, in which a series of differently sized QDs can be easily produced upon step‐wise heating the preformed seed QDs in the presence of excessive PbS monomers, that is, un‐crystallized PbS. The mechanism for such a QD growth is associated with the combination of “living” monomer addition to existing QDs to increase particle sizes and Ostwald ripening to focus particles. The outcome is not only able to produce various high‐quality QDs without extensive synthetic work, but also provide new insight into the mechanism of synthesizing semiconducting colloidal nanocrystals.
Estimation of Dynamic Panel Data Models with Cross‐Sectional Dependence: Using Cluster Dependence for Efficiency
Authors: Verdier Valentin 
Published: September 2015

SummaryThis paper considers the estimation of dynamic panel data models when data are suspected to exhibit cross‐sectional dependence. A new estimator is defined that uses cross‐sectional dependence for efficiency while being robust to the misspecification of the form of the cross‐sectional dependence. We show that using cross‐sectional dependence for estimation is important to obtain an estimator that is more efficient than existing estimators. This new estimator also uses nuisance parameters parsimoniously so that it exhibits good small‐ and large‐sample properties even when the number of time periods is large. As an empirical application, we estimate the effect of attending private school on student achievement using a value‐added model. Copyright © 2015 John Wiley & Sons, Ltd.
Intervention Thresholds and the Diagnosis of Osteoporosis
Authors: Kanis John A , McCloskey Eugene V , Harvey Nicholas C , Johansson Helena , Leslie William D 
Published: September 2015

ABSTRACT

A position paper of the National Bone Health Alliance recently recommended that diagnostic criteria for osteoporosis be redefined. We review the merits and demerits of this proposal and argue that the operational bone mineral density (BMD)-based definition be retained while clarity is brought to bear on the distinction between diagnostic and intervention thresholds. © 2015 American Society for Bone and Mineral Research.
Impact of processes of care aimed at complication reduction on the cost of complex cancer surgery
Authors: Short Marah N. , Ho Vivian , Aloia Thomas A. 
Published: September 2015

Background and ObjectivesHealth care providers add multiple processes to the care of complex cancer patients, believing they prevent and/or ameliorate complications. However, the relationship between these processes, complication remediation, and expenditures is unknown.MethodsData for patients with cancer diagnoses undergoing colectomy, rectal resection, pulmonary lobectomy, pneumonectomy, esophagectomy, and pancreatic resection were obtained from hospital and inpatient physician Medicare claims for the years 2005–2009. Risk‐adjusted regression analyses measured the association between hospitalization costs and processes presumed to prevent and/or remedy complications common to high‐risk procedures.ResultsAfter controlling for comorbidities, analysis identified associations between increased costs and use of multiple processes, including arterial lines (4–12% higher; P < 0.001) and pulmonary artery catheters (23–33% higher; P < 0.001). Epidural analgesia was not associated with higher costs. Consultations were associated with 24‐44% (P < 0.001) higher costs, and total parenteral nutrition was associated with 13–31% higher costs (P < 0.001).ConclusionsMany frequently utilized processes and services presumed to avoid and/or ameliorate complications are associated with increased surgical oncology costs. This suggests that the patient‐centered value of each process should be measured on a procedure‐specific basis. Likewise, further attention should be focused on defining the efficacy of each of these costly, but frequently unproven, additions to perioperative care. J. Surg. Oncol. 2015;112:610–615. © 2015 The Authors. Journal of Surgical Oncology Published by Wiley Periodicals, Inc.
Squamous cell carcinoma of the maxillary sinus: A population‐based analysis
Authors: Dubal Pariket M. , Bhojwani Amit , Patel Tapan D. , Zuckerman Omry , Baredes Soly , Liu James K. , Eloy Jean Anderson 
Published: September 2015

Objectives/HypothesisSquamous cell carcinoma (SCC) accounts for > 90% of head and neck cancers and 60% to 75% of malignancies of the paranasal sinuses. The most commonly affected paranasal sinus is the maxillary. Epidemiologic, incidence, and survival trends have been studied for maxillary sinus SCC (MSSCC), but far less is known about its metastatic potential.Study DesignRetrospective database analysis.MethodsThe Surveillance, Epidemiology, and End Results database was used to extract frequency, incidence, and survival data for MSSCC between 2004 and 2012. The resultant cases were stratified according to patient demographics and collaborative stage information, including extent of disease, lymph node involvement, TNM staging, and regional and distant metastasis.ResultsA total of 854 cases of MSSCC were identified. The mean age at diagnosis was 66.6 years, with 87.4% presenting at > 50 years. Most patients (65.1%) were male. Whites accounted for 74.6% of cases. A majority (64.3%) of cases presented with stage IV disease. Overall 5‐year disease‐specific survival was 23.4%. Neck involvement was seen in 7.6% of T1 tumors, 22.2% of T2 tumors, 18.5% of T3 tumors, and 12.2% of T4 tumors. Distant metastasis was not seen in T1–T3 tumors, but was present in 6.8% of T4 tumors.ConclusionsMSSCC is a rare entity with poor overall prognosis. The majority of patients included in this study were white males aged ≥50 years, with most tumors presenting at advanced stages. Nodal involvement and distant metastasis are poor prognostic indicators. T1–T3 tumors did not metastasize to distant sites.Level of Evidence4 Laryngoscope, 126:399–404, 2016