bluuebunny/crossref_metadata_2025 huggingface dataset:
Pension schemes and labor supply in the formal and informal sector
Authors: Ceni Rodrigo
Published: August 2017

This paper analyzes the participation path of workers in the formal and informal sectors throughout their lives and their pension eligibilities, as well as how the social security scheme can change the aforementioned participation path. High levels of informality have impacts on the benefits that workers receive, especially their pension benefits. I use Argentinean panel data from 1995 to 2008 to construct a structural discrete choice model which estimates the population’s labor path and their pension eligibilities. I find evidence that low-educated workers have difficulties to obtain a pension by the age of 65 and even by age 70. Policy experiments show that if the parameters are fixed as in the pay-as-you-go (PAYG) model, there is a slight reduction in the years worked in the formal sector and the percentage of workers who obtain a Full pension. If the pension requirements (minimum age and years contributing) are stricter, there is an increase in the years spent in the formal sector but it is not sufficient to achieve the benchmark level of pension coverage. If the requirements are looser, there is a reduction in the amount of time spent in formality to contribute up to the new threshold.
Measuring links between labor monopsony and the gender pay gap in Brazil
Authors: Vick Brandon
Published: August 2017

This paper focuses on gender differences in job mobility and earnings for workers in Brazil. Monopsony theory suggests a link between the wage elasticity of labor supply and wage penalties. Should one group of workers be less elastic in their supply choices, that group is predicted to earn less than others. To measure wage elasticity, I estimate a hazard model on voluntary job separations using theRAIS, a linked employer-employee dataset that captures formal-sector workers’ job durations over time. Four models are specified and point to significant gender differences. Across the models, male elasticity ranges from 1.638 to 2.175 while female elasticity ranges from 1.22 to 1.502. The female wage penalty predicted by these elasticity differences ranges from 11.4 to 20.5%, compared to an actual gender wage difference of 16.4%. Results of higher male elasticity are robust to the use of a more parsimonious specification, a discrete-time approach, the use of job spell data for a single year, and disaggregation by region. I extend the model through decomposition methods to help clarify the association between earnings, job separations, and elasticity.
The DNA Triangle and Its Application to Learning Meiosis
Authors: Wright L. Kate , Catavero Christina M. , Newman Dina L.
Published: August 2017

Although instruction on meiosis is repeated many times during the undergraduate curriculum, many students show poor comprehension even as upper-level biology majors. We propose that the difficulty lies in the complexity of understanding DNA, which we explain through a new model, the DNA triangle. The DNA triangle integrates three distinct scales at which one can think about DNA: chromosomal, molecular, and informational. Through analysis of interview and survey data from biology faculty and students through the lens of the DNA triangle, we illustrate important differences in how novices and experts are able to explain the concepts of ploidy, homology, and mechanism of homologous pairing. Similarly, analysis of passages from 16 different biology textbooks shows a large divide between introductory and advanced material, with introductory books omitting explanations of meiosis-linked concepts at the molecular level of DNA. Finally, backed by textbook findings and feedback from biology experts, we show that the DNA triangle can be applied to teaching and learning meiosis. By applying the DNA triangle to topics on meiosis we present a new framework for educators and researchers that ties concepts of ploidy, homology, and mechanism of homologous pairing to knowledge about DNA on the chromosomal, molecular, and informational levels.
Association of Lymph Node Count and Overall Survival in Node-Negative Endometrial Cancers
Authors: Seagle Brandon-Luke L. , Gilchrist-Scott Douglas , Graves Stephen , Strohl Anna E. , Nieves-Neira Wilberto , Shahabi Shohreh
Published: August 2017

Purpose

To estimate whether the number of lymph nodes removed during surgery is associated with overall survival among women with endometrial cancer.

Methods

We performed a retrospective cohort study of women with node-negative, stage I to IIIB endometrial cancer (n = 152,702) identified from the 1998-2011 National Cancer Database. Multivariable Cox proportional hazards regression tested for an association of lymph node count with survival. Restricted mean survival and relative hazard curves were plotted for survival as a function of number of removed lymph nodes.

Results

Among women with node-negative endometrioid endometrial cancer, for each additional five lymph nodes removed, the hazard for death decreased: stage I, the hazard ratio (HR) was 0.95 (95% CI, 0.93 to 0.97; P < .001), stage II, HR was 0.90 (95% CI, 0.87 to 0.94; P < .001); and stage IIIA-B, HR was 0.92 (95% CI, 0.88 to 0.96; P < .001). When grouped by grade, each additional five lymph nodes removed was also associated with decreased hazard for death: grade 1, HR was 0.96 (95% CI, 0.93 to 0.99; P = .009); grade 2, HR was 0.91 (95% CI, 0.89 to 0.94; P < .001); and grade 3, HR was 0.95 (95% CI, 0.92 to 0.97; P < .001). Increased lymph node dissection was also associated with increased survival among women with node-negative stage II (HR, 0.92; 95% CI, 0.86 to 0.98; P = .01) or stage IIIA-B (HR, 0.94; 95% CI, 0.89 to 0.99; P = .025) uterine serous carcinoma, but not among women with carcinosarcoma or clear cell adenocarcinoma. Five-year survival for women with one to four nodes removed and endometrioid or serous histology was 85% (95% CI, 84% to 85%) and 54% (95% CI, 50% to 59%), respectively. Five-year survival was significantly higher for women with ≥ 20 removed nodes and endometrioid (91%; 95% CI, 90% to 91%) or serous (72%; 95% CI, 68% to 76%) histology ( P < .001).

Conclusion

Increased lymph node count is associated with a 1% to 14% decreased hazard of death per each additional five lymph nodes removed and a 5% to 20% increased 5-year survival among women with pathologically node-negative endometrioid and serous endometrial cancers.
Brexit Plus, Whitelash, and the Ascendency of Donald J. Trump
Authors: Kellner Douglas
Published: August 2017

A cauldron of resentment, Donald Trump is able to tap into and articulate the resentments of his followers in a way that Democrats and other professional politicians have not been able to do. Capitalizing on his followers’ resentment of politicians, Trump has successfully mobilized voters by touting himself as an outsider and as antiestablishment. The article reflects on the 2016 US presidential campaign, factors behind Trump’s stunning victory, and consequences of his presidency.
Sons of a Beach
Authors: Gana Nouri
Published: August 2017

This article examines the cultural politics of bastardy in the films of Tunisian filmmaker Nouri Bouzid at a time when questions of national and cultural identity have come to the fore in Tunisia in the wake of the Revolution of Freedom and Dignity. Nouri Bouzid is the doyen of Tunisian cinema. Not only was he involved in every major postcolonial film, whether as a screenwriter, a scriptwriter, or even as an actor, but he single-handedly directed more than half a dozen films, each of which enjoyed wide national and international acclaim. His debut film, Man of Ashes, dramatizes the trauma of child molestation and the collapse of filial relations as well as the emergence of a new generation of men who seek to recast filial and familial relations beyond blood ties and familial limitations. This same cinematic pursuit is further developed in his later films with striking consistency and perseverance. At a time when the postrevolutionary public sphere is saturated with heated debates around Tunisian national identity, propelled by fantasies of purity and virile filiation, Bouzid’s bastard characters serve, the author argues, not only to warp and reclaim the political playing field for revolutionary purposes but also to remind Tunisians of the disturbing legacy of bastardy (instituted by a long history of colonial rape from the Romans to the French) to which they had been and continue to be heirs, and with which they have to reckon. Studying the rhetoric of bastardy in Bouzid’s cinema leaves us in the end with the touching yet unsparing conclusion that for Bouzid there are no Tunisians until they have assumed their bastardy.
Differential recruitment of E3 ubiquitin ligase complexes regulates RET isoform internalization
Authors: Hyndman Brandy D. , Crupi Mathieu J. F. , Peng Susan , Bone Leslie N. , Rekab Aisha N. , Lian Eric Y. , Wagner Simona M. , Antonescu Costin N. , Mulligan Lois M.
Published: August 2017

The RET receptor tyrosine kinase is implicated in normal development and cancer. RET is expressed as two isoforms, RET9 and RET51, with unique C-terminal tail sequences that recruit distinct protein complexes to mediate signals. Upon activation, RET isoforms are internalized with distinct kinetics, suggesting differences in regulation. Here, we demonstrate that RET9 and RET51 differ in their abilities to recruit E3 ubiquitin ligases to their unique C-termini. RET51, but not RET9, interacts with, and is ubiquitylated by CBL, which is recruited through interactions with the GRB2 adaptor protein. RET51 internalization was not affected by CBL knockout but was delayed in GRB2-depleted cells. In contrast, RET9 ubiquitylation requires phosphorylation-dependent changes in accessibility of key RET9 C-terminal binding motifs that facilitate interactions with multiple adaptor proteins, including GRB10 and SHANK2, to recruit the NEDD4 ubiquitin ligase. We showed that NEDD4-mediated ubiquitylation is required for RET9 localization to clathrin-coated pits and subsequent internalization. Our data establish differences in the mechanisms of RET9 and RET51 ubiquitylation and internalization that may influence the strength and duration of RET isoform signals and cellular outputs.

This article has an associated First Person interview with the first authors of the paper.
Percutaneous Transhepatic Biliary Stenting with Uncovered Self-Expandable Metallic Stents in Patients with Malignant Biliary Obstruction – Efficacy and Survival Analysis
Authors: Pranculis Andrius , Kievišas Mantas , Kievišienė Lina , Vaičius Artūras , Vanagas Tomas , Kaupas Rytis Stasys , Dambrauskas Žilvinas
Published: August 2017

Background: The aim of this study was to assess short- and long-term outcomes of malignant biliary obstruction (MBO) treatment by percutaneous transhepatic biliary stenting (PTBS) with uncovered selfexpandable metallic stents (SEMS), and to identify predictors of survival.

Material/Methods: A nine-year, single-centre study from a prospectively collected database included 222 patients with inoperable MBO treated by PTBS with uncovered nitinol SEMS.

Results: Technical and clinical success rates were 95.9% and 82.4%, respectively. The total rate of postprocedural complications was 14.4%. The mean durations of the primary and secondary stent patency were 114.7±15.1 and 146.4±21.2 days, respectively. The 30-day mortality rate was 15.3% with no procedure-related deaths. The mean estimated length of survival was 143.3±20.6 days. Independent predictors increasing the risk of death included higher than 115 μmol/L serum bilirubin 2–5 days after biliary stenting (HR 3.274, P=0.019), distal (non-hilar) obstruction of the bile ducts (HR 3.711, P=0.008), Bismuth-Corlette type IV stricture (HR 2.082, P=0.008), obstruction due to gallbladder cancer (HR 31.029, P=0.012) and only partial drainage of liver parenchyma (HR 4.158, P=0.040).

Conclusions: PTBS with uncovered SEMS is an effective and safe method for palliative treatment of MBO. Serum bilirubin higher than 115 μmol/L 2–5 days after the procedure has a significant negative impact on patients’ survival. Lower survival is also determined by distal bile duct obstruction, Bismuth– Corlette type IV stricture, biliary obstruction caused by gallbladder cancer and when only partial liver drainage is applied.
Diagnosis of three different pathogenic microorganisms by gas chromatography-mass spectrometry
Authors: Karami Najmeh , Mirzajani Fateme , Rezadoost Hassan , Karimi Abdollah , Fallah Fatemeh , Ghassempour Alireza , Aliahmadi Atusa
Published: August 2017

Background: Diagnoses  of  respiratory  tract  infections  usually happen  in  the  late  phase  of  the  disease  and  usually  result  in  reduction  of  the  pathogen  load after broad-spectrum  antibiotic  therapy,  but  not  in eradication of the pathogen.  The  development  of a  non-invasive,  fast,  and  accurate  method  to  detect  pathogens  has  always  been  of  interest  to  researchers  and  clinicians  alike.  Previous studies have shown that bacteria produce organic gases.  The  current  study  aimed  to  identify  the  volatile  organic  compounds  (VOCs)  produced  by three  respiratory  tract  pathogens,  including  Staphylococcus  aureus,  Escherichia  coli  and  Candida  albicans.

Methods: The  volatile  organic  compounds  (VOCs)  produced  were identified by gas chromatography–mass spectrometry(GC-MS), with  prior  collection  of  microbial  volatile  compounds  using  solid  phase  microextraction  (SPME)  fiber.  The volatile compounds were collected by obtaining bacterial headspace samples.

Results: Results  showed  that  these  three  organisms  have  various  VOCs,  which  were  analyzed  under  different  conditions.  By ignoring common VOCs, some species-specific VOCs could be detected.  The most important VOC of E. coli was Indole, also some important VOCs produced by S. aureus  were 2,3-Pentandione,  cis-Dihydro-α-terpinyl  acetate,  1-Decyne,  1,3-Heptadiene-3-yne,  2,5-dimethyl  Pyrazine,  Ethyl  butanoate  and  Cyclohexene,4-ethenyl  furthermore,  most  of  identified  compounds  by  C.  albicans are  alcohols.

Conclusions: The  detection  of  VOCs  produced  by  infectious  agents  maybe  the  key  to  make   a  rapid  and  precise  diagnosis  of  infection,  but  more  comprehensive  studies  must  be  conducted  in this  regard.
People who report anomalous information reception have higher dissociation symptom scores
Authors: Wahbeh Helané , Radin Dean
Published: August 2017

Background: Dissociative states exist on a continuum from nonpathological expressions, such as highway hypnosis and day-dreaming, to pathological states of derealization and depersonalization. Claims of anomalous information reception (AIR) are often dismissed as symptoms of dissociation disorder, despite other studies that show otherwise. This study examined the relationship of dissociation symptoms and AIR in a large convenience sample (n= 3,984).

Methods: These secondary analyses of cross-sectional survey data were examined. The survey included demographics, the Dissociation Experience Scale Taxon, and AIR data. Summary statistics and linear and logistic regressions evaluated dissociation variables and AIR endorsement relationships with and without covariates.

Results: 3023 respondents with complete data were included. Participants were mostly middle aged (51 years ± 16; range 17-96), female (70%), Caucasian (85%), college educated (88%), had an annual income over $50,000 (55%), were raised Christian (71%), and now affiliated as Spiritual but not Religious (60%). AIR ability was endorsed by 42% of participants, with their first experience starting in childhood (81%), and 53% having family members with similar experiences. The mean dissociation score was 14.4 ± 17.3 (range 0-100) for all participants and was significantly higher for AIR claimants (18.2 ± 19.3), as compared to non-claimants (11.8 ± 15.2; t = -10.3, p<0.000). In total, 11% of AIR non-endorsers and 22% of AIR endorsers had a cut-off score greater than 30 (X2 = 63.0, p=<0.000).

Conclusions: Both AIR claimants and non-claimants scored lower than the clinical cutoff for dissociation, with the claimants having significantly higher scores. Future studies comparing AIR claimants versus non-claimants may benefit by incorporating comprehensive dissociation symptom measurement, as well as their effects on the person’s functionality, to discern the pathological versus non-pathological nature of purported AIR experiences.
Fast Approximation Methods for Online Scheduling of Outpatient Procedure Centers
Authors: Berg Bjorn P. , Denton Brian T.
Published: August 2017

This paper presents a new model for online decision making. Motivated by the healthcare delivery application of dynamically allocating patients to procedure rooms in outpatient procedure centers, the online stochastic extensible bin-packing problem is described. The objective is to minimize the combined costs of opening procedure rooms and utilizing overtime to complete a day’s procedures. The dynamic patient-allocation decisions are made in an uncertain environment where the number of patients scheduled and the procedure durations are not known in advance. The resulting optimization model’s tractability focuses the paper’s attention on approximation methods and a special case that is amenable to decomposition-based solution methods. Theoretical performance guarantees are presented for list-based approximation methods as well as an approximation that is common in practice, where procedure rooms are reserved for patient groups in advance. Numerical results based on a real outpatient procedure center demonstrate the favorable results of the list-based approximations based on their average and worst case performances, as well as their computational requirements. Further, the numerical experiments show that the policy of reserving procedure rooms for patient groups in advance can perform poorly. These results are contrary to common practice and favor alternative, and still easy-to-implement, policies.

The online supplement is available at https://doi.org/10.1287/ijoc.2017.0750 .
Managing Reliability and Stability Risks in Forest Harvesting
Authors: Lejeune Miguel A. , Kettunen Janne
Published: August 2017

The timing of forest stands harvesting is an important operational decision in forestry. Major goals of private nonindustrial forest owners are to achieve a steady flow of profits while reaching an overall satisfactory and reliable profit level. These goals are pursued under uncertainties in the growth of trees in different regions and in the prices of wood products. We propose an optimization framework that uses financial risk concepts to capture the above goals and uncertainties, and apply it to a real forestry problem in Finland. Our results demonstrate that the obtained harvesting schedules outperform those obtained without the explicit consideration of the stability and reliability requirements in harvest profits. More generally, our results indicate that the forest owner can improve the profit stability by (i) harvesting a greater number of forest stands early and (ii) harvesting in the first periods of the planning horizon stands that are predominantly composed of slow-growing forests. This research responds to the call for scenario-based approaches that represent well, and in a solvable way, multiple uncertainties in large forestry problems. This study fills in a gap in stochastic programming and can be a cornerstone for subsequent improvements in the solution of combinatorial chance-constrained problems with multirow random technology matrix.

The online appendix is available at https://doi.org/10.1287/msom.2017.0626 .
Can Safewards improve patient care and safety in forensic wards? A pilot study
Authors: Cabral Albano , Carthy John
Published: August 2017

This pilot study was completed in West London Forensic Service, part of West London Mental Health Trust, between September 2014 and May 2015. Patients in the forensic service often present with perplexing behaviours and challenges that threaten the experience of safety on the wards. It is claimed that Safewards can reduce conflict and the need for restrictive interventions. This study was designed to evaluate the implementation of Safewards interventions and to explore their impact in this forensic service. Evidence was found that Safewards can assist in creating safer, less restrictive wards, but there was also indication of a strong organisational pull to resist change and to maintain the existing status quo.
Point-of-care fluorescence imaging predicts the presence of pathogenic bacteria in wounds: a clinical study
Authors: Rennie M.Y. , Lindvere-Teene L. , Tapang K. , Linden R.
Published: August 2017

Objective:

Bacteria in chronic wounds are invisible to the naked eye and can lead to delayed wound healing. Point-of-care bacterial fluorescence imaging illuminates a wound with 405nm light, triggering bacteria to produce red fluorescence and enabling real-time bacterial localisation. Prospective, single-blind clinical trials (clinicaltrials.gov #NCT02682069, #NCT03091361) were conducted to determine the positive predictive value (PPV) of this red fluorescence for detecting bacteria in chronic wounds.

Method:

Lower limb chronic wounds were imaged for bacterial fluorescence using the MolecuLight i:X imaging device. Regions positive for red fluorescence were discretely sampled using either biopsy or curettage to correlate red fluorescence signals to bacterial presence and analysed via gold standard quantitative polymerase chain reaction (qPCR) or via semi-quantitative culture analysis respectively.

Results:

A total of 60 lower limb chronic wounds were imaged. Quantitative PCR analysis of wound tissue biopsies obtained from regions of red fluorescence yielded a PPV of 100%. Total bacterial load in these areas was ≥104 CFU/g. Semi-quantitative culture analysis of curettage scrapings from regions of red fluorescence yielded a PPV of 100%, with predominately moderate or heavy bacterial growth. There were nine distinct bacterial species detected, all common pathogens in chronic wounds. Staphylococcus aureus was the most prevalent species.

Conclusion:

Bacterial fluorescence image-guided curettage or biopsy sampling positively predicts bacterial presence in wounds at potentially harmful levels, entirely eliminating the risk of false negative sampling. Fluorescence imaging of wounds offers clinicians real-time information on a wound's bacterial burden, insight which can influence treatment decisions at the point-of care.
Effective wound bed preparation using maggot debridement therapy for patients with critical limb ischaemia
Authors: Nishijima A. , Gosho M. , Yoshida R. , Yanagibayashi S. , Takikawa M. , Nishijima J. , Sekido M. , Yamamoto N.
Published: August 2017

Objective:

Patients with critical limb ischaemia (CLI) lack sufficient blood flow in to the limb, which leads to difficulties in the normal wound healing process. Therefore, maggot debridement therapy (MDT) has not generally been recommended for CLI patients. We evaluated the effectiveness of wound bed preparation by MDT in CLI patients who had undergone mid-foot amputation.

Methods:

Patients who underwent mid-foot amputation after angioplasty between April 2014 and October 2016 were retrospectively investigated by classifying them into an MDT group or a conventional treatment group. The primary outcome was defined as achievement of wound healing. Secondary outcomes were the proportions of amputation-free survival (AFS) and successful ambulatory improvement. Propensity scores were used to evaluate treatment outcomes based on five factors: ankle-brachial index, skin perfusion pressure of the foot, nutritional status, experience with dialysis and age.

Results:

A total of 39 patients (39 legs) were included, seven within the MDT group and 32 in the conventional treatment group. Clinical backgrounds of the two groups showed no significant differences except for higher albumin levels for the MDT group (3.5±0.4g/dl; p=0.014). The wound healing proportion was significantly higher in the MDT group (86%) than in the control group (38%) (p=0.035). At 6 months after amputation, no significant differences were found between the two groups for AFS (71% versus 47%; p=0.41) or ambulatory capability (43% versus 28%; p=0.65). This result was also similar to the propensity score adjustment analysis.

Conclusions:

The efficacy of MDT with favourable wound bed preparation was shown in our CLI patients based on effective debridement and granulation formation by maggots, avoiding the loss of their heels. Wound-healing rates after MDT were higher for patients than for those receiving conventional treatment. MDT is considered a valid adjuvant treatment strategy for patients with CLI after revascularisation treatment is conducted. More favourable wound bed preparation and successful graft take were achieved in the MDT group, suggesting the effectiveness of MDT for wound healing in CLI patients.
Improvement of SRAM stability using read and write assist techniques
Authors: A PullaReddy , G Sreenivasulu , R Veerabadra Chary
Published: August 2017

The objective of this paper is to demonstrate how to improve the read stability of the SRAM cell using the read assist technique. SRAM cell stability is the primary concern for the present and future technologies due to process variations like Vt and Vdd scaling, etc. So it requires additional circuit techniques such as write and read to assist to improve the stability of SRAM memories. To accomplish the non-destructive read operation, we need to either weaken the pass transistor or strengthen the pull-up transistor during the read operation. Towards decrease of pass transistor strength, we implemented the lower word line voltage as read assist circuit. The lower word line voltage will help the selected and un-selected columns (for higher column mux options) during a read operation. But during write operation the lowered word line voltage scheme will impact the write operation. So, in order to improve the read margin we used read assist technique at the same time to ensure that write operation is successful we combined the negative bit line write assist scheme along with read assist technique. The proposed assist circuit gain the power and read margin improvement of 10%, 30% respectively. We observed the read margin analysis at process, voltage and temperature corners.
Clasificación de una imagen satelital empleando máquinas de soporte vectorial para cuantificar el área de Pinus Patula en una plantación
Authors: Orlando Riaño Melo Orlando , Acosta Medina Carlos Daniel , Leal Pulido Robert Orlando
Published: August 2017

En este artículo se muestran los resultados obtenidos con el método de Máquinas de Soporte Vectorial (SVM), aplicado para clasificar una imagen de una plantación de Pinus patula en Antioquía (Colombia).El clasificador SVM empleó como kernel la función de base radial en la solución del problema de clasificar coberturas del suelo. La clasificación se realizó de manera supervisada tomando 1500 puntos de entrenamiento dentro del área de estudio que incluyeron seis clases de cobertura. La evaluación de exactitud temática obtenida se realizó a partir de 3000 puntos de validación. El estudio indica que el índice Kappa para la clasificación con el algoritmo SVM fue de 0,94, que se considera muy bueno y un porcentaje correctamente clasificado (PCC) del 96,26%.
Guía de pruebas y protocolos para el lanzamiento del satélite Colombia I
Authors: Rodríguez Romero Heber Fabián , Aparicio Pico Lilia Edith
Published: August 2017

El presente artículo contiene un análisis de las normas internacionales que hay que cumplir para preparar un pequeño satélite o Cubesat para su lanzamiento, estas normas se verifican con pruebas de vacío, de vibración, termobáricas, pruebas mecánicas, pruebas de choque, electromagnéticas, etc. Para el análisis se trabaja con el estándar internacional “GSFC-STD-7000A”[1] y la norma de Cubesat[2] los cuales corresponden a los documentos principales. Se toman en cuenta las sugerencias sobre una estructura ideal para desarrollar este tipo de satélites, finalmente se citan algunos autores sobre trabajos exitosos mostrando las sugerencias y bases de lo que se debe tener en cuenta para la preparación del satélite para su lanzamiento.
PROPUESTA INICIAL PARA EL DESARROLLO DE UNA METODOLOGÍA PARA LA IMPLEMENTACIÓN DE IPTv6 SOBRE IMS
Authors: Granados Cárdenas Jean Paul , López Sarmiento Danilo Alfonso , Hernández Suárez César Augusto
Published: August 2017

La televisión digital ha evolucionado continuamente desde su presentación digital terrestre (DVB-T), pasando por el estándar satelital (DVB-S) hasta llegar a su presentación actual conocida como IPTV (Internet Protocolo Television) que ofrece múltiples servicios multimedia tales como voz, video y datos, transportados con ciertos niveles de calidad de servicio, seguridad, interactividad y confianza gracias a la utilización de la pila de protocolos TCP/IP. En tal sentido el artículo pone a disposición de la comunidad académica una propuesta  metodológica inicial que pretende servir de guía en la implementación de este tipo de sistemas sobre una plataforma de libre distribución conocida como IMS (IP Multimedia Subsystem) para redes de área local tipo IPv6.
TABLA DE CONTENIDO
Authors: Ingenieria Redes De
Published: August 2017

Tabla de contenido
Nazwy w dyskursie – w kontekście koncepcji wtórnej oralności
Authors: Rutkowski Mariusz
Published: August 2017

In the paper, the chosen cases of using the proper names revealing the residual orality in the term of Walter Ong are presented. What is characteristic, proper names are used in the extensive, aggregative formulas, in their full-forms rather than in potential abbreviated forms (e.g. name of Polish political party Prawo i Sprawiedliwość instead its abbreviation PiS). Another feature is formulas with the stable collocations, used for strengthen the persuasive value of the utterances. Another residual orality features are: agonistically toned and homeostatic – proper names in those utterances may assist in the political rhetoric, or ever strengthen the creation of the new political myths.
High throughput virtual screening based discovery of dengue protease inhibitor
Authors: Bagchi Sounak , Alia Uzma , Mohammad Faiz , Mohd Siddique Mohd Usman
Published: August 2017

High throughput virtual screening (HTVS) has been proved a successful tool for getting LEADs in drug design and discovery. In an attempt to design new Dengue protease inhibitors, we performed HTVS using Zinc13 database containing 13,195,609 drug-like molecules. ZINC42678127 was identified as potential HIT against Dengue protease. Itâ€™s shape and electrostatic complimentary was found to be 0.608 and 0.078, respectively. Qikprop analysis of the compound complied with the Rule of Five (Ro5) and other drug- likeliness properties. Binding mode analysis of docked conformer of ZINC42678127, displayed favorable interaction with the active site residues of DENV protease. The identified HIT has a potential to become a LEAD against Dengue protease.
Effects of cotton stalk, maize stalk and almond bark on some soil microbial activities
Authors: Küçük Çiğdem , Tekgül Y.Tuba
Published: August 2017

With the increase of agricultural production, residues of crop are the main source of organic matter in the soil and they are alternatives to inorganic fertilizers. For this purpose, effects of organic residues (cotton stalk, maize stalk, almond bark) commonly grown in Turkey were investigated for some soil microbial activity in clay soil. In this study, incubation experiment was set up. Five doses (0%, 2%, 4%, 6% and 8%) of organic residues (maize stalks, cotton stalks or almond bark) were applied to soil. Soil microbiological properties of soil samples such as CO2respiration, dehydrogenase and urease activity were determined. According to the results obtained, maize stalk, cotton stalks and almond bark applications increased some soil microbiological activities, such as CO2respiration, dehydrogenase and urease activities according to control soil. Maize stalk in comparison to other residues affects better on the biological properties of the soil. It is determined that enhancing effects of the added organic residues (maize stalk, cotton stalk, almond bark) into the soil were changed according to the type of organic residues, dosage and application terms.
Zur thermischen Modellierung inkompressibler Rohrströmungen
Authors: Bachler Simon , Huber Johannes , Woittennek Frank
Published: August 2017

Im Beitrag wird das thermische Verhalten von durchströmten Rohren
untersucht. Dazu werden detaillierte physikalische Modelle unterschiedlicher
Komplexität hergeleitet, wobei die Wärmespeicherfähigkeit der Rohrwand
jeweils explizit berücksichtigt wird. Für die vorgeschlagenen
verteilt-parametrischen Modelle werden geschlossene Lösungen angegeben.
Ausgehend von diesen Lösungen wird ein neues
Totzeit-Differentialgleichungs-Modell vorgestellt, das als Grundlage für
Simulationen und Reglerentwürfe dienen kann. Dieses wird in
Simulationsstudien und anhand von Messdaten mit einem, vor
allem in regelungstechnischen Anwendungen populären, sehr einfachen
Totzeit-Differentialgleichungs-Modell verglichen.
Nephropathology: A Cornerstone for Understanding and Estimation of Recent Advances in Glomerular Diseases
Authors: Capusa Cristina , Mehedinti Ana-Maria , Leh Sabine , Marti Hans-Peter
Published: August 2017

The developments in the field of kidney pathology are major objectives for nephrology worldwide, since the histopathologic diagnosis is a cornerstone for all glomerulopathies (either primary or secondary related to systemic diseases-for tubulointerstitial and vascular lesions as well as renal allograft nephropathy). Moreover, the correct interpretation of kidney tissue samples is a challenge for pathologists too. Consequently, a new subspecialty - nephropathology, was accepted by many medical schools in various universities, while dedicated scientific meetings, journals and websites were also created. In the following few pages, a short overview on the history, classic and novel meanings of the renal pathology for the understanding of glomerular pathophysiology will be discussed.
Water Footprint of main crops in Austria / Wasser-Fußabdruck wichtiger Nutzpflanzen in Österreich
Authors: Thaler Sabina , Gobin Anne , Eitzinger Josef
Published: August 2017

Water is a key resource for human activities and a critical trigger for the welfare of the whole society. The agricultural sector makes up the main share in global freshwater consumption and is therefore responsible for a large part of the water scarcity in many drought prone regions. As an indicator that relates human consumption to global water resources, the “Water Footprint” (WF) concept can be used, where in case of crop production the total consumed water of crop fields for the crop growing seasons is related to the harvested dry matter crop yield (such as grains). In our study, we simulated the green and primary blue WF of selected main crops for Austrian conditions. Different irrigation scheduling scenarios, demonstrated for a main agricultural production area and various crops in Austria with significant irrigation acreage, were studied. The impact of climate and soil conditions on the green crop WFs of reference crops over the whole territory of Austria were simulated in a second step. Sunflower, winter wheat and grain maize showed the highest WF in the semi-arid study regions, especially on soils with low water capacity. In more humid regions, low temperatures were the main limiting factor on the crop yield potential and frequently led to higher WFs due to lower yields.
A new micro-baking method for determination of crumb firmness properties in fresh bread and bread made from frozen dough / Entwicklung eines Mikrobackversuches zur Evaluierung der Krumeneigenschaften von frischen Broten und Broten aus vorgegarten Tiefkühlteiglingen
Authors: Frauenlob Johannes , Nava Marta , D’Amico Stefano , Grausgruber Heinrich , Lucisano Mara , Schoenlechner Regine
Published: August 2017

In general, micro-baking tests are used to determine the baking quality when only low amounts of test flour are available, for example, in grain breeding. Several micro-methods are described in literature, but none of them allows the determination of bread crumb texture parameters. Therefore, a micro-baking procedure that offers this option was developed, and it was also evaluated for bread made from pre-fermented frozen doughs. In this procedure, Rapid Visco Analyser (RVA) sample cans were used as baking pans. To examine the capability of this procedure, three wheat flours with different starch properties were chosen. The obtained breads were analyzed with respect to specific loaf volume, crust color and bread crumb firmness. Additionally, a storage test (0-5 days) was performed to determine the crumb firming parameters by kinetics of the Avrami equation. The obtained specific bread volumes revealed significant differences between the flours and the coefficients of variation ranged between 4.2 and 5.5%. Crumb firmness measurement was able to identify significant differences within the samples. The obtained data on firming kinetics reflected the expected properties of samples with different starch properties. Overall, this work demonstrated the feasibility of crumb property measurement on breads on a micro-scale.
Soil aggregation and soil organic matter in conventionally and organically farmed Austrian Chernozems / Bodenaggregation und organische Substanz in konventionell und biologisch bewirtschafteten österreichischen Tschernosemböden
Authors: Sandén Taru , Lair Georg J. , van Leeuwen Jeroen P. , Gísladóttir Guðrún , Bloem Jaap , Ragnarsdóttir Kristín Vala , Steffens Markus , Blum Winfried E.H.
Published: August 2017

In order to study the soil aggregate distributions and soil organic matter (SOM), we sampled top- and subsoils in four intensively farmed croplands (two organic (Org-OB and Org-LA), and two conventional (Con-OB and Con-LA)) on Haplic Chernozems located in Marchfeld in the east of Vienna (Austria). Soil structure and SOM quantity, quality and distribution between free and occluded particulate organic matter and aggregate size fractions (<20 µm, 20-250 µm, 250-5000 µm) were studied by following a density fractionation procedure with low-energy ultrasound treatment. The relation of the soil physicochemical (e.g., particle size distribution, pH, organic carbon, total nitrogen) and biological properties (e.g., fungal biomass, active fungi) with stable soil aggregate size fractions and SOM was studied. The mean weight diameter (MWD) showed no significant difference between all studied sites and was between 3.8 mm and 10.0 mm in topsoils and between 6.7 mm and 11.9 mm in subsoils. In topsoils, the contents of calcium-acetate-lactate (CAL)-extractable P, active fungal biomass, dithionite-extractable Fe and sand were significantly positively correlated with the amount of the macroaggregates and with the MWD. We observed that most soil organic carbon, depending on soil texture, was stored in the microaggregate size classes <20 µm and 20-250 µm.
Non-Linear Differential Polynomials Sharing Small Function with Finite Weight
Authors: Harina Waghamore P. , Rajeshwari S.
Published: August 2017

The purpose of the paper is to study the uniqueness of entire and meromorphic functions sharing a small function with finite weight. The results of the paper improve and extend some recent results due to Abhijit Banerjee and Pulak Sahoo [3].
Multiple-Poly-Bernoulli Polynomials of the Second Kind Associated with Hermite Polynomials
Authors: Khan Waseem A. , Ghayasuddin M. , Shadab M.
Published: August 2017

In this paper, we introduce a new class of Hermite multiple-poly-Bernoulli numbers and polynomials of the second kind and investigate some properties for these polynomials. We derive some implicit summation formulae and general symmetry identities by using different analytical means and applying generating functions. The results derived here are a generalization of some known summation formulae earlier studied by Pathan and Khan.
Saturation rank for finite group schemes: Finite groups and infinitesimal group schemes
Authors: Pan Yang
Published: August 2017

We investigate the saturation rank of a finite group scheme defined over an algebraically closed
field

𝕜

{\Bbbk}

of positive characteristic p. We begin by exploring the saturation rank for finite groups
and infinitesimal group schemes. Special attention is given to reductive Lie algebras and the second
Frobenius kernel of the algebraic group

SL
n

{\operatorname{SL}_{n}}

.
One-pot synthesis of 1-substituted 1H-1,2,3,4-tetrazoles from 2aminothiazoles using tributylmethylammonium chloride as a catalyst
Authors: Nagaraju Kerru , Lalitha Gummidi , Singh Parvesh , Rao Chunduri Venkata
Published: August 2017

Reaction between substituted thiazolylamine or oxazolylamine, triethyl orthoformate and sodium azide in the presence of tributylmethylammonium chloride in DMSO furnishes 1-substituted 1H-1,2,3,4-tetrazole in high yield.
Surface Modification of Nanocrystalline Zeolite X and Its Application as Catalyst in Synthesis of Cumene in a Packed Bed Flow Reactor: A Kinetic Study
Authors: Thakur Ruchika , Barman Sanghamitra , Halder Gopinath
Published: August 2017

In the present investigation, synthesis of cumene by transalkylation of 1, 4 DIPB with benzene was studied over cerium modified nano crystalline zeolite X in a fixed bed plug flow reactor. Nano crystalline zeolite X was synthesized and characterized by XRD, SEM, TPD, EDS and FTIR. A series of nanocrystalline zeolite X (MX4, MX6, MX10) modified with ceric ammonium nitrate of different concentrations (4 %, 6 %, 10 %) was used for synthesis of cumene. MX10zeolite was proved to be the most active catalyst over which 27.12 % yield of cumene was obtained at temperature 553K, benzene/1, 4 DIPB mole ratio of 7.5 and space time-10.54 kg h/kmol. Reduction of crystal size (100–500 nm) in MX10increases surface area (633m2/gm) and thereby increases cumene yield. A kinetic rate equation was developed from the product distribution pattern following Langmuir–Hinshelwood approach. Kinetic parameters were estimated by nonlinear regression analysis. The activation energy for transalkylation and isomerisation reaction was found to be 88.86 kJ/mol and 99.04 kJ/mol respectively.
Tissue conservation for transplantation
Authors: Krezdorn Nicco , Tasigiorgos Sotirios , Wo Luccie , Turk Marvee , Lopdrup Rachel , Kiwanuka Harriet , Win Thet-Su , Bueno Ericka , Pomahac Bohdan
Published: August 2017

Pathophysiological changes that occur during ischemia and subsequent reperfusion cause damage to tissues procured for transplantation and also affect long-term allograft function and survival. The proper preservation of organs before transplantation is a must to limit these injuries as much as possible. For decades, static cold storage has been the gold standard for organ preservation, with mechanical perfusion developing as a promising alternative only recently. The current literature points to the need of developing dedicated preservation protocols for every organ, which in combination with other interventions such as ischemic preconditioning and therapeutic additives offer the possibility of improving organ preservation and extending it to multiple times its current duration. This review strives to present an overview of the current body of knowledge with regard to the preservation of organs and tissues destined for transplantation.
“Cunt”: On the perception and handling of verbal dynamite by L1 and LX users of English
Authors: Dewaele Jean-Marc
Published: August 2017

“Cunt” is currently one of the most offensive words in the English language and is usually censored in the English press and media. The present study looks firstly at differences between 1159 first (L1) and 1165 foreign (LX) users of English in their perceived understanding of the word, its perceived offensiveness and their self-reported frequency of use. Secondly, it considers the relationships between the dependent variables and a number of psychological, sociobiographical and linguistic profile variables. The findings suggest that LX users are less sure about the exact meaning of the word, underestimate its offensiveness and use it less frequently than L1 users. Links between understanding of the word and its perceived offensiveness vary for L1 and LX users. High levels of Extraversion, Neuroticism and Psychoticism were linked to more frequent use of the word, as were lower levels of education, a younger age, being a male and working in a swearing-rich environment for both L1 and LX users. Variation in the group of LX users was linked to age of onset of acquisition of English, context of acquisition, self-reported oral proficiency, frequency of use of English and having lived in an English-speaking environment.
Physiological Pattern Changes in Response to a Simulated Competition in Elite Women's Artistic Gymnasts
Authors: Isacco Laurie , Ennequin Gael , Cassirame Johan , Tordi Nicolas
Published: August 2017

Isacco, L, Ennequin, G, Cassirame, J, and Tordi, N. Physiological pattern changes in response to a simulated competition in elite women's artistic gymnasts. J Strength Cond Res 33(10): 2768–2777, 2019—The outstanding progress in women's artistic gymnastics in recent decades has led to increased technical and physiological demands. The aim of this study was to investigate (a) the physiological demands of elite French gymnasts and (b) the impact of a competitive routine on physiological pattern changes. Fourteen French elite female gymnasts performed anthropometric measurements, physical fitness tests, and a simulated 4-event competition. Heart rate (HR) was continuously recorded throughout the duration of the simulated competition. Blood lactate concentrations were assessed at rest, before the beginning and at 2, 4, and 10 minutes after completion of the routine on each apparatus. Isometric handgrip strength and anaerobic endurance and power were assessed during the simulated competition. The highest values of HR and blood lactate concentrations were reached during the floor and uneven bar exercises. Blood lactate concentrations and HR kinetics were apparatus dependent and values remained significantly increased at 10 minutes of recovery compared with resting data. Anaerobic endurance and power decreased significantly as the competition progressed (p < 0.001). The present results show specifically cardiorespiratory and anaerobic apparatus-dependent responses throughout a simulated competition. Recovery approaches seem relevant to prevent and minimize fatigue and optimize performance in these athletes.
Pacing Profiles and Competitive Performance of Elite Female 400-m Freestyle Swimmers
Authors: Lipinska Patrycja , Hopkins Will G.
Published: August 2017

Lipinska, P, and Hopkins, WG. Pacing profiles and competitive performance of elite female 400-m freestyle swimmers. J Strength Cond Res 34(1): 218–224, 2020—Pacing can impact competitive endurance performance. The objective of this study was to determine relationships between pacing parameters and competitive performance of elite female 400-m freestyle swimmers. Publicly available websites provided 50-m split and final times for 381 swims of 20 elite female swimmers in over 150 national and international competitions between 2004 and 2016. Most pacing profiles displayed negative quadratic curvature, with the fifth of the 8 laps being the median slowest. The mean times for the first and last laps were faster than predicted by the quadratic by 5.6 and 1.9%, respectively, and lap-to-lap variability was 0.65%. Scatter plots of each swimmer's final time often showed no obvious relationships with their pacing parameters, suggesting that swimmers compensated for changes in one parameter with changes in another. However, some plots showed a U shape or linear trend that allowed tentative identification of optimum values of the pacing parameters. In these plots, it was apparent that about half the swimmers might make small to moderate improvements (up to ∼1%) by changing the slope or curvature of their pacing profile or by changing time in the first or last laps. This approach for characterizing pacing profiles to identify possible improvements might be appropriate to assess pacing in other sports with multiple laps, frequent competitions, and relatively constant environmental conditions.