bluuebunny/crossref_metadata_2025_split huggingface dataset:
The cohomology of the sporadic group J
2 over 𝔽3
Authors: Díaz Ramos Antonio , Garaialde Ocaña Oihana 
Published: August 2014

Abstract
We describe the cohomology ring

H
*

(

J
2

;

𝔽
3

)

${H^*(J_2;\mathbb {F}_3)}$

both as a subring of

H
*

(

3
+

1
+
2

;

𝔽
3

)

${H^*(3^{1+2}_+;\mathbb {F}_3)}$

and with an abstract presentation. We also give its Poincaré series. Our calculational tool is the first author's spectral sequence for the cohomology of a finite group with a strongly closed p-subgroup.
Outage Analysis of Dual-hop Cognitive Networks with Relay Selection over Nakagami-m Fading Environment
Authors: Zhang Zongsheng , Pi Xurong 
Published: August 2014

AbstractIn this paper, we investigate the outage performance of decode-and-forward cognitive relay networks for Nakagami-m fading channels, with considering both best relay selection and interference constraints. Focusing on the relay selection and making use of the underlay cognitive approach, an exact closed-form outage probability expression is derived in an independent, non-identical distributed Nakagami-m environment. The closed-form outage probability provides an efficient means to evaluate the effects of the maximum allowable interference power, number of cognitive relays, and channel conditions between the primary user and cognitive users. Finally, we present numerical results to validate the theory analysis. Moreover, from the simulation results, we obtain that the system can obtain the full diversity.
Discontinuous two step flow synthesis of m-aminoacetophenone
Authors: Tibhe Jagdish , Sharma Yachita , Joshi Ramesh A. , Joshi Rohini R. , Kulkarni Amol A. 
Published: August 2014

Abstract
The continuous flow nitration of acetophenone followed by reduction of the meta isomer has been demonstrated using simple tubular reactors. Because of ease of separation of the desired isomer from the first step, both steps are made continuous, but separately. The continuous flow nitration was carried out in a safe manner in a shorter reaction time than the conventional approach. The choice of micromixer was seen to affect the performance of the nitration reaction. The effect of different parameters on the yield of the desired product was studied. The reduction step with sodium sulfide was found to be economical and could be carried out efficiently at 70°C using sodium sulfide in ethanol, using a silicone tube. Both steps were demonstrated for several hours, yielding a sufficiently large quantity (∼100 g) of m-aminoacetophenone at lab scale in a single day using simple tubular reactors.
Predicting onset of labor from echogenicity of the cervical gland area on vaginal ultrasonography at term
Authors: Yamaguchi Michiko , Fukami Tekehiko , Asakura Hirobumi , Takeshita Toshiyuki 
Published: August 2014

AbstractOn vaginal ultrasonography, cervical gland area (CGA) gradually disappears with advancing gestation. This is attributed in part to the echogenicity of the CGA becoming equal to that of the cervical stroma. The present study aimed to assess the usefulness of echogenicity in the CGA at term for predicting the time of spontaneous onset of labor.The ratio of mean grayscale level (MGL) in the CGA to that in the cervical stroma (CGA/stroma MGL ratio) was estimated as an index of echogenicity in the CGA in women after 36 weeks of gestation (n=190). Using this ratio, time until onset of labor was predicted among women between 37 and 38 weeks (n=104).CGA/stroma MGL ratio increased with advancing gestation, decreasing cervical length (CL), and increasing Bishop score. Univariate logistic analysis indicated that a combination of CL<20 mm and CGA/stroma MGL ratio ≥100% predicted onset of labor within a week [odds ratio (OR), 22.2; 95% confidence interval (CI), 2.4–202.0] was even better than short CL alone (OR, 6.8; 95%CI, 1.7–26.7; P=0.006). Stepwise logistic analysis identified that this combination was an only independent predictor (OR, 20.8; 95%CI, 2.3–188.5; P=0.007).The combination of CGA/stroma MGL ratio ≥100% and short CL may offer a useful predictor of onset of labor.
Position at birth as an important factor for the occurrence of anal sphincter tears: a retrospective cohort study
Authors: Haslinger Christian , Burkhardt Tilo , Stoiber Bernhard , Zimmermann Roland , Schäffer Leonhard 
Published: August 2014

Abstract

Objective: This work aimed to analyze the association between maternal position at birth in spontaneous deliveries and the occurrence of anal sphincter tears (AST) given the lack of evidence related to the least traumatic birth position.

Study design: A total of 7832 vaginal deliveries were included. Vaginal-operative deliveries and deliveries with fundal pressure were excluded. Birth positions on bed, in water, kneeling, and in a squatting position on a low stool were compared. Birth position on bed was considered as the reference group, and a logistic regression analysis adjusting for important fetomaternal parameters was performed.

Results: The overall incidence of AST was 1.1%. AST rate was significantly increased in squatting (2.9%) and kneeling (2.1%) positions compared with birth position on bed (1.0%) or in water (0.9%). Logistic regression analysis revealed a significantly higher risk for ASTs in squatting (OR 2.92, CI 95% 1.04–8.18) and in kneeling positions (OR 2.14, CI 95% 1.05–4.37) compared with the reference group on bed. When adjusting for risk factors, birth in a kneeling position remained significantly associated with ASTs (adj. OR 2.21, CI 95% 1.07–4.54).

Conclusions: Birth in squatting or in kneeling position is associated with an elevated risk for ASTs. Birth in water is not associated with an increased risk for AST. Based on the results, women should be informed about the association of certain birth positions with the occurrence of AST.
On Studying Partially Accelerated Life Tests Under Progressive Stress
Authors: Ismail Ali A. , Al-Babtain A. A. 
Published: August 2014

Abstract
For highly reliable products, a progressive stress accelerated life test has been proposed to obtain timely information of the product's lifetime distribution. This article considers a progressive stress partially accelerated life test model when the lifetime of a product under use condition follows Weibull distribution. It is assumed that the progressive stress is directly proportional to time. The statistical properties of the maximum likelihood (ML) estimators of the model parameters such as existence, uniqueness, and invariance are studied. The biases and mean square errors of the maximum likelihood estimators are computed to assess their performances in the presence of the stress method developed in this article through a Monte Carlo simulation study.
Bayesian Estimation of Pareto Distribution Under Failure-Censored Step-Stress Life Test Model
Authors: Ismail Ali A. 
Published: August 2014

Abstract
In this paper, both maximum likelihood and Bayesian estimators for a partially accelerated step-stress life test model are considered using type II censored data from Pareto distribution of the second kind. The posterior means and posterior variances are obtained under the squared error (SE) loss function using Lindley's approximation procedure. The maximum likelihood estimators and analogous Bayes estimators are compared in terms of their mean-square errors based on simulated samples from Pareto distribution.
Changing Trends of Childhood Disability, 2001–2011
Authors: Houtrow Amy J. , Larson Kandyce , Olson Lynn M. , Newacheck Paul W. , Halfon Neal 
Published: August 2014

BACKGROUND:
Over the past half century the prevalence of childhood disability increased dramatically, coupled with notable increases in the prevalence of mental health and neurodevelopmental conditions. This study provides a detailed assessment of recent trends in childhood disability in relation to health conditions and sociodemographic factors.

METHODS:
Secondary data analysis of National Health Interview Survey (NHIS) datasets 2001–2002, 2004–2005, 2007–2008, and 2010–2011 (N = 198 888) was conducted to calculate the prevalence, rate of change, severity, and sociodemographic disparities of parent-reported childhood disability.

RESULTS:
The prevalence of childhood disability has continued to increase, growing by 15.6% between 2001–2002 and 2010–2011. Nearly 6 million children were considered disabled in 2010–2011. Children living in poverty experienced the highest rates of disability, 102.6 cases per 1000 population in 2010–2011, but unexpectedly, children living in households with incomes ≥400% above the federal poverty level experienced the largest increase (28.4%) over this 10-year period. The percentage of disability cases related to any physical health condition declined 11.8% during the decade, whereas cases related to any neurodevelopmental or mental health condition increased by 20.9%.

CONCLUSIONS:
Over the past decade, parent-reported childhood disability steadily increased. As childhood disability due to physical conditions declined, there was a large increase in disabilities due to neurodevelopmental or mental health problems. For the first time since the NHIS began tracking childhood disability in 1957, the rise in reported prevalence is disproportionately occurring among socially advantaged families. This unexpected finding highlights the need to better understand the social, medical, and environmental factors influencing parent reports of childhood disability.
Tablas de Contingencia y Modelos de Regresión Logística aplicados a cuatro rutas migratorias a partir del medio rural en Cuba
Authors: López-Calleja Hiort-Lorenzen Cristina 
Published: August 2014

Las migraciones internas se han convertido en un problema de fundamental importancia. El objetivo de este trabajo es analizar las migraciones internas desde el medio rural, en Cuba; identificar las características de los migrantes, en relación con los no migrantes. Se utilizan modelos de regresión logística para los cuatro movimientos migratorios: Rural-Rural-Rural, Rural-Rural-Urbano, Rural-Urbano-Rural y Rural-Urbano-Urbano, con sus pruebas de bondad de ajuste y diagnósticos. A partir de la Encuesta de Migraciones Internas (ENMI) se construyen tablas cruzadas que caracterizan a los migrantes,. En el análisis, se interpretan las conocidas razones de disparidad para cada ruta migratoria. Los modelos construidos se ajustan a los datos. Para las rutas analizadas la migración resultó selectiva atendiendo a diferentes atributos sociodemográficos; el color de la piel no resultó importante. En algunos casos existen efectos confusores, por tanto son las razones de disparidad de la regresión logística las válidas. El sexo no influye para la ruta migratoria RRR. Cuando el destino del migrante contiene una zona urbana, el sexo influye. El movimiento migratorio se realiza en familia, para todas las rutas migratorias migran más los jóvenes; en la ruta RUR migran más las con vínculo laboral, y en la ruta RUU las más calificadas.
Polycrystalline Yb3+–Er3+-co-doped YAG: Fabrication, TEM-EDX characterization, spectroscopic properties, and comparison with the single crystal
Authors: Hostaša Jan , Esposito Laura , Malchère Annie , Epicier Thierry , Pirri Angela , Vannini Matteo , Toci Guido , Cavalli Enrico , Yoshikawa Akira , Guzik Malgorzata , Alombert-Goget Guillaume , Guyot Yannick , Boulon Georges 
Published: August 2014

Abstract
Effect of ion-exchange on Structural, Electronic, and Vibrational Properties of the -O-Ti-O-Ti-O- Quantum Wires in ETS-10
Authors: Koç Mehmet , Galioglu Sezin , Toffoli Daniele , Üstünel Hande , Akata Burcu 
Published: August 2014

ABSTRACTThe exchange of the extra-framework Na+ ions in Engelhard titanosilicate (ETS-10) with Ag+ and Ru3+ has been investigated theoretically by means of density functional theory (DFT) and experimentally, with the aim of elucidating its effects on the structural, electronic and vibrational properties of the Ti-O-Ti quantum wire. A comparison of theoretical findings and experimental Raman data in the region of Ti-O-Ti stretching reveals that the introduction of the Ag+ ions preserves the integrity of the wire to a large extent while Ru3+ ions cause large-scale distortions along with some loss in crystallinity.
Fibrin Gels as Cell-Instructive Substrates for Regenerative Medicine
Authors: Murphy Kaitlin C. , Davis Hillary E. , Y-K Binder Bernard , Leach J. Kent 
Published: August 2014

ABSTRACTFibrin hydrogels are an exciting platform for cell-based therapies, as they contain necessary cues for adhesion, can be remodeled by entrapped cells, and the biophysical properties can be modified with a plethora of strategies. Furthermore, fibrin acts as a provisional matrix in vivo for tissue regeneration. While the majority of studies seek to manipulate fibrin gel properties by changing the concentration of clotting proteins, these studies highlight our capacity to change bulk stiffness and fiber properties by supplementing the solutions with sodium chloride (NaCl). Physical properties including fiber thickness, porosity, compressive modulus, and fluid uptake capacity were dependent on NaCl content, with gels containing 2.60% (w/v) NaCl exhibiting compressive moduli threefold higher than gels without NaCl. These material properties, in turn, affected the gel morphology along with the osteogenic and pro-angiogenic response of entrapped mesenchymal stem/stromal cells (MSCs). The osteoconductivity of fibrin gels can be enhanced by inclusion of apatite-coated polymer substrata to nucleate mineral, while the efficacy of engineered fibrin gels to simultaneously deploy small molecules with cells to enhance endogenous angiogenic potential has been demonstrated. Collectively, these data demonstrate the broad capacity of engineered fibrin gels to regulate function of entrapped cells for use in tissue engineering and regenerative medicine.
The Evolution and Application of Regenerative Engineering
Authors: James Roshan , Laurencin Cato T. 
Published: August 2014

ABSTRACTCurrent treatment options for tissue loss or organ failure include organ/tissue transplantation of autografts/allografts, delivery of bioactive agents, and utilization of synthetic replacements composed of metals, polymers, and ceramics. However each strategy suffers from a number of limitations. The early attempts to overcome these drawbacks led to the emergence of tissue engineering that provided viable tissue substitutes using a combination of biomaterials, cells, and factors. This approach was ideally suited to repair damaged tissues; however the substitution and regeneration of large tissue volumes and multi-level tissues such as complex organ systems require more than optimal combinations of biomaterials and biologics.‘Regenerative Engineering’ is aimed at creating large and complex tissue systems incorporating advances in material science, stem cell technology and developmental biology. We believe that recent breakthrough technologies in advanced materials science and nanotechnology allow us to recapitulate native tissues. The novel designer polymers incorporate bioactivity and physical features specific to a regeneration application. Overall, engineered materials and scaffolds afford selective control of cell sensitivity, and precise control of temporal and spatial stimulatory cues. We aim to build multi-level systems such as organs through location-specific topographies and physico-chemical cues incorporated into a continuous phase using a combination of classical top-down tissue engineering approach with bottom-up strategies used in regenerative biology.Musculoskeletal tissues are critical to the normal functioning of an individual and following damage or degeneration show extremely limited endogenous regenerative capacity. The development of material and structural platforms to modulate stem cell behavior to enhance regeneration is an area of great interest. In this manuscript we cover some examples of material development, and incorporation of topographical and cytokine cues to modulate the differentiation of hard and soft musculoskeletal tissues such as bone, ligament and tendon.
Tight-Binding Quantum Chemical Molecular Dynamics of Oxygen Migration of Rh-supporting CeO2 Surfaces
Authors: Suzuki Ai , Miura Ryuji , Hatakeyama Nozomu , Miyamoto Akira 
Published: August 2014

ABSTRACTThe electronic properties of the interface between Rh clusters and CeO2 (111), (110) and (100) surfaces were studied using an isothermal-isobaric (NPT) ensemble at 773 K and 101.343 kPa using the tight binding-quantum chemical molecular dynamics (TB-QCMD) method. The amount of electronic exchange by interaction at the interface between the supported Rh55 clusters and each CeO2 surface was investigated quantitatively. A comparison of the mean square displacement (MSD) showed that the topmost oxygens on the Rh-supporting CeO2 surface exhibited higher mobility than those of the bare CeO2 surface. Although the mobility of the topmost oxygens on the bare CeO2 surface was in the order (100) > (110) > (111), this sequence was altered by the presence of Rh, so that the oxygen mobility for the more open (110) surface was the largest. The amount of electron exchange that occurred between Rh and the CeO2 (110) surface was also larger than for the (111) or (100) surface. The Ce 4f orbitals on the CeO2 (110) surface exhibited the strongest mixing with Rh 4d orbitals, which simultaneously caused restructuring and instability of the topmost Ce-O bonds. This enhancement of oxygen migration in the presence of Rh was occurred together with an increase in the number of oxygen vacancies on the ceria surface. This was because the topmost oxygens was shifted to have a stronger affinity with Rh and thus formed stronger bonds with Rh than with Ce.
Size Effects in Quasi-Static Energy Transport for Microscopic Quantum Systems
Authors: Panasyuk George Y. , Haugan Timothy J. , Yerkes Kirk L. 
Published: August 2014

ABSTRACTWe consider finite size effects on energy transfer between nanoparticles mediated by quantum systems. The nanoparticles are considered as heat reservoirs with a finite number of modes. An expression for the quasi-static energy transport between the heat reservoirs having a finite mode frequency spacing Δ is derived. The resulting equations describing long-term (t ≥1/Δ) relaxation for the mode temperatures and the average temperatures of the nanoparticles are solved. The solutions depend on small number of measurable parameters and show unusual peculiarities in their temporal variations. As is shown, Fourier’s law in a chain of identical subsystems (nanoparticles) can be validated only on a short time scale. For a larger times, when t ∼ 1/Δ, the temperatures of different modes deviate from each other, thus preventing thermal equilibrium in each subsystem, and the validity of Fourier’s law cannot be established.
Ellen N. La Motte: The Making of a Nurse, Writer, and Activist
Authors: Williams Lea M. 
Published: August 2014

AbstractThis article examines the early career of Ellen N. La Motte (1873–1961) to trace how her training at the Johns Hopkins Training School for Nurses and years spent as a tuberculosis nurse in Baltimore shaped her perception of tuberculosis prevention and women’s suffrage. Although studies of tuberculosis have frequently alluded to her work, no sustained biocritical discussion of her development as a nurse and scholar exists. Between 1902, when she graduated from nursing school, and 1914, the start of the Great War, La Motte published a textbook and dozens of articles in journals devoted to nursing and social reform and delivered many speeches at local, regional, and national meetings. In addition, as her reputation as an expert in the field of tuberculosis nursing grew, her advocacy for the vote for women increased, and she used her writing and speaking skills on behalf of the suffrage cause. This article assesses how the skills La Motte acquired during these years helped mold her into a successful and respected nurse, writer, and activist.
Emerging Adulthood: Resilience and Support
Authors: Hinton Vanessa , Meyer Jill 
Published: August 2014

Purpose: This article provides an overview of emerging adulthood, recentering, and resilience of youth with disabilities. Emerging adulthood is a developmental period during which individuals experience delays in attainment of adult roles and social expectations. Recentering is a process that emerging adults experience as they make distinct shifts from adolescence to adulthood. Successful recentering is a result of supports, opportunities, and available choices. In addition, resilience is a psychological construct that manifests when positive experiences come out of adverse situations and is a key factor in one’s ability to recenter. This article also provides an overview of identified aspects of resilience within the emerging adulthood framework.Method: A computer search of ERIC and PsycINFO was used to locate studies published between 1990 and 2013. This timeframe was selected because the genesis of emerging adulthood came about in the early 1990s (Arnett, 2006).Results: The authors explored various factors such as social supports, self-determination, agency, adaptation, and coping that are linked to resilience and an emerging adult’s ability to recenter.Conclusions: Important connections with evidence-based practices and considerations for professional development are discussed in assisting consumers who are emerging adults in the recentering process. There is great diversity among individuals’ supports, opportunities, and choices, and there is a need for research investigating emerging adulthood and individuals with disabilities.
Central retesting of breast cancer with HER2 immunohistochemistry score of 0 or 1+ using silver-enhanced in situ hybridisation: a multicentre, prospective study in Greece
Authors: Papadopoulos Savvas , Arapantoni-Dadioti Petroula , Sfikas Konstantinos , Stylianidou Artemis , Trichia Helen , Katsamagou Eleftheria , Baleki Vaia , Noe Johannes 
Published: August 2014

Abstract
Newly diagnosed invasive breast cancers should be evaluated for Human Epidermal Growth Factor Receptor 2 (HER2) status by immunohistochemistry (IHC) and/or in situ hybridisation (ISH) to determine eligibility for trastuzumab or other HER2-targeted therapies. Previous reports of high discordance rates between IHC and ISH have raised concerns over the accuracy of HER2 testing, especially when IHC is conducted locally. This study aimed to determine the rate of false-negative IHC results at three pathology centres (one central, two local) in Greece by central retesting of 240 prospectively collected invasive breast cancers scored as IHC 0/1+ at initial testing. All samples were from female patients (median age 58.0 years). Initial IHC tests utilised either the CB11 (159/239; 66.5%) or 4B5 (80/239; 33.5%) antibodies and were scored as 0 in 105/240 cases (43.8%) and 1+ in 135/240 cases (56.3%). All samples were centrally retested by automated silver in situ hybridisation (SISH). Of 237 samples with SISH staining suitable for assessment, 223 (94.1%; 95% confidence interval 90.3–96.5%) were classed as SISH-negative (HER2:chromosome enumeration probe 17 (CEP17) <1.8). Eight tested SISH-positive (HER2:CEP17 >2.2), providing a false-negative rate of 3.4%. A further four samples (1.7%) exhibited equivocal amplification status (HER2:CEP17 1.8–2.2) and two (0.8%) showed polysomy of chromosome 17. The proportion of SISH-negative results did not significantly differ between the IHC 0 and 1+ subgroups (95.2% vs. 93.2%; p=0.505). In conclusion, the low observed rate of false-negative IHC results in this study supports the use of IHC for initial HER2 status assessment in local or central laboratories in Greece.
Role Patterns in it Projects Teams: Design of a Selection Module Using Fuzzy Logic Techniques
Authors: Bach-Dąbrowska Irena , Wojnar Jakub 
Published: August 2014

Abstract
This paper introduces an approach based on role patterns and modelling by the use of fuzzy logic tool for selection process with limitation to the area of IT projects environment. The article shows a concept of role pattern structures and their further usage in process of forming a fuzzy model dedicated to candidate assessment process support