bluuebunny/crossref_metadata_2025 huggingface dataset:
Perceptions of Pregnancy and Lactation from the Pregnancy and Lactation Autoimmune Network Registry
Authors: Mills Brooke S. , Dao Kathryn H. , Tecson Kristen M. , Beil Emily F. , Tate Rachel , Cush John J.
Published: April 2019

Objective.

The Pregnancy and Lactation Autoimmune Network (PLAN) registry was established to evaluate the concerns of women with autoimmune or inflammatory rheumatic diseases (AIRD) pertaining to pregnancy and lactation.

Methods.

The registry was started as a survey of patients with AIRD at a single rheumatology specialty center in November 2016 and included questions regarding fertility, pregnancy, miscarriages, and lactation before and after diagnosis.

Results.

The study included 154 subjects from the PLAN registry. More than half (52%) of respondents indicated that their diagnosis negatively changed their views on pregnancy and nearly a third (30%) decided not to have children after AIRD diagnosis. Most (66%) women were concerned that medication use during the childbearing process would affect the baby. One-third (34%) indicated their views on breastfeeding negatively changed as a result of their disease diagnosis. The rates and duration of breastfeeding did not differ significantly for babies born before or after the mothers’ diagnosis (p = 0.50 and p = 0.21, respectively). Eighteen women in our study avoided breastfeeding or stopped breastfeeding earlier than planned to start a medication (including etanercept, adalimumab, hydroxychloroquine, and certolizumab) they believed to be contraindicated during lactation. The PLAN registry included 19 women who breastfed 22 babies while being exposed to a disease-modifying antirheumatic drug or biologic. None of these 19 women reported a delay in their children’s developmental milestones or higher infection rates.

Conclusion.

This study highlights an unmet need in patients with AIRD of childbearing potential for data and education regarding pregnancy and lactation.
La place de l'enfant dans la loi de 2016
Authors: Delpeyrou Marie-Christine
Published: April 2019

Dans cette introduction, Marie-Christine Delpeyrou, directrice d’un placement familial, revient sur la loi de 2016 portant sur la réforme de la protection de l’enfance. Tout en soulignant les aspects positifs de cette loi (l’intérêt de l’enfant redevient le centre du dispositif institutionnel), l’auteur prend l’exemple des projets personnalisés de l’enfant pour conclure à une mise en garde : ne pas confondre harmonisation et uniformisation, qui se fera alors au détriment du travail avec chaque enfant.
La place de l’enfant dans la société, l’enfant placé par la société
Authors: Bouville Jean-Marc
Published: April 2019

La première partie de l’article s’attache à décrire de manière synthétique l’évolution des rapports entre l’enfant et sa famille à travers les différentes lois de 1975 à nos jours. En même temps, est établie la même évolution pour l’enfant placé. Il en ressort que les mutations sont très importantes pour la place de l’enfant dans sa famille comme dans les familles d’accueil. L’auteur, dans une deuxième partie, montre comment de « l’enfance dont il s’agit de se délivrer, on est passé à l’enfance à laquelle on rêve de rester fidèle » (Gauchet) . Cela signifie que l’enfant n’est plus seulement désiré mais programmé, voulu et que les rapports parents-enfants vont être souvent marqués par une espèce de non-séparation prenant un caractère pathologique au fil des années quand l’enfant n’en est plus un dans la réalité.
Arrivée inatttendue d'un adolescent en famille d'accueil
Authors: Teijeiro Tony
Published: April 2019

Dans cette courte vignette, l’auteur rend compte d’un exemple exceptionnel d’accueil d’un jeune par les conditions dans lesquelles va se dérouler l’événement. Un adolescent à l’annonce de son placement fait un chantage impressionnant au suicide et arrive menotté dans la famille d’accueil. Celle-ci acceptera-t-elle l’hospitalité dans ces conditions ?
Imprévisibles, imprédictibles visites médiatisées : le clinicien surpris
Authors: Lefebvre Danielle , Stéphanoff Marina
Published: April 2019

« Pour nous cliniciens, le cadre est bien davantage qu’un dispositif contraint permettant la mise en œuvre du “droit des parents”. Pour chaque famille, nous cherchons… Nous cherchons l’équation singulière du lien enfant/parent, nous cherchons un signe, une piste pour avoir accès, par-delà la plainte, la colère, par-delà les discours affichés, à une vérité intime, à une parole juste, une parole qui rend justice au sujet. » Dans ce texte éclairé d’une douce poésie, les auteurs défendent l’idée d’une clinique de l’étonnement, dans laquelle le praticien accepte la surprise, laisse au bon endroit le savoir théorique car aucune visite médiatisée ne ressemble à la précédente. De nombreuses vignettes cliniques illustrent ce choix éthique.
Arquitectura e innovación. Las claves de la obra de Antonio Lamela y Estudio Lamela. Su aportación a los siglos XX y XXI
Authors: Lamela C.
Published: April 2019

En el artículo se realiza un repaso de la trayectoria conjunta de mi padre, el Arquitecto Antonio Lamela, y de Estudio Lamela.

Se señala la relación con la revista Informes, imprescindible referente y a veces único vehículo de difusión de la Arquitectura y la construcción en España. La relación con la revista ha sido estrecha y muy productiva.

Se realiza un recorrido desde la primera época del Estudio, con un protagonismo más personal de mi padre, hasta el periodo del acuñamiento del nombre “Estudio Lamela” para transmitir un concepto de empresa multidisciplinar y trabajo en equipo, una vez sumado al equipo mi tío Amador Lamela.

He intentado transmitir también mi visión personal a raíz de incorporarme a la Oficina y dirigir el desarrollo de obras importantes de esos momentos, como la ampliación del Estadio Santiago Bernabéu o la Terminal T4. También establecemos una reflexión sobre nuestro proceso de internacionalización.
EFFECT OF NUMBER OF TURNS AND MEDIUM BETWEEN COILS ON THE WIRELESS POWER TRANSFER EFFICIENCY OF AIMD’S
Authors: Patil B. P. , Newaskar Deepali , Sharma Kunal , Baghmar Tarun , Rajput Mahesh Ku.
Published: April 2019

Active implantable medical devices (AIMDs) like implantable cardiac pacemakers play very important role in extending lives of patients with some cardiovascular diseases. The life of implantable device depends on life of battery. If this device can be charged from outside with power transfer device, then the cost of surgical procedures for patient can be saved. One must ensure, while transferring this power there should not be any abnormal effect on human body tissues. Wireless recharging of such devices through magnetic resonant coupling is of concern and hence the topic of more research to have uninterrupted supply from battery. The technique of wireless power transfer, primary or transmitting coil is assumed to be on body and receiver coil is assumed to be inside the human body. Several critical aspects need to be studied while designing coil for wireless power transfer (WPT). One of which is choice of operational frequency. In this research experiment, designed circuit is tested for checking power transfer was studied. Effect of the distance between primary and secondary coil affects the efficiency of power transfer. Authors also tied to test this for using different medium like air, placing 80 GSM paper and cloth. It is found that the medium between the primary and secondary affects the transfer of power. Careful thought needs to be given while designing power transfer system.
Management of Extracorporeal Membrane Oxygenation for Obstetric Patients: Concerns for Critical Care Nurses
Authors: Knisley Jody , DeBruyn Erin , Weaver Michelle
Published: April 2019

Critical care nurses are faced with many challenges, and one that is particularly stressful is caring for obstetric patients. This care can become more complex when the obstetric patient requires extracorporeal membrane oxygenation. It is imperative that critical care nurses have knowledge about this unique population, the expected physical changes of pregnancy, and the management of extracorporeal membrane oxygenation. Obstetric patients present unique challenges, and care is focused on the woman and her family. The purpose of this paper is to provide information for critical care nurses regarding care of obstetric patients who receive extracorporeal membrane oxygenation.
Identification of Low Cardiac Output Syndrome at the Bedside: A Pediatric Cardiac Intensive Care Unit Survey
Authors: Nordness Matthew J. , Westrick Ashly C. , Chen Heidi , Clay Mark A.
Published: April 2019

BACKGROUND

Low cardiac output syndrome is a transient constellation of signs and symptoms that indicate the heart’s inability to supply sufficient oxygen to tissues and end-organs to meet metabolic demand. Because the term lacks a standard clinical definition, the bedside diagnosis of this syndrome can be difficult.

OBJECTIVE

To evaluate concordance among pediatric cardiac intensive care unit nurses in their identification of low cardiac output syndrome in pediatric patients after cardiac surgery.

METHODS

An anonymous survey was distributed to 69 pediatric cardiac intensive care unit nurses. The survey described 10 randomly selected patients aged 6 months or younger who had undergone corrective or palliative cardiac surgery at a freestanding children’s hospital in a tertiary academic center. For each patient, data were presented corresponding to 5 time points (0, 6, 12, 18, and 24 hours postoperatively). The respondent was asked to indicate whether the patient had low cardiac output syndrome (yes or no) at each time point on the basis of the data presented.

RESULTS

The response rate was 46% (32 of 69 nurses). The overall Fleiss k value was 0.30, indicating fair agreement among raters. When the results were analyzed by years of experience, agreement remained only slight to fair.

CONCLUSIONS

Regardless of years of experience, nurses have difficulty agreeing on the presence of low cardiac output syndrome. Further research is needed to determine whether the development of objective guidelines could improve recognition and facilitate communication between the pediatric cardiac intensive care unit nurse and the medical team.
Foreign capital inflows and economic growth in SAARC
Authors: Idrees Muhammad Abdullah
Published: April 2019

The purpose of the study is to find out the impact of foreign debt, foreign portfolio investment, foreign direct investment, foreign remittance and foreign import on economic development. For this purpose, we use data from 1992 to 2015 from World Bank sites of the selected SAARC countries namely Pakistan, India, Bangladesh, and Sri Lanka. An Econometric view tool is applied to find out impact of independent and dependent variable. For this Panel Unit Root test, Panel co-integration test, panel regression model (Fixed or random effect) and granger causality is used. The findings of panel unit root test are showing that the variables are not stationary at level but at first level all variables are stationary. Panel co-integration test shows the long relationship among variables. Foreign Imports, Foreign direct investment and foreign remittance have positive impact on GDP, whereas foreign portfolio investment and foreign debt have negative impact on GDP. Lastly Granger causality shows that FDI, FD and FI have unidirectional relation but FR and FPI doesn’t have any relation.
Novel autoantibodies in rheumatoid arthritis
Authors: Bonifacio A.F. , Alunno A. , La Paglia G.M.C. , Valentini E. , Leone M.C. , Bartoloni E. , Gerli Roberto
Published: April 2019

Rheumatoid factor and antibodies against cyclic citrullinated peptides represent a diagnostic hallmark in rheumatoid arthritis (RA). However, over the last decades many other autoantibodies have been identified. Several proteins can trigger an aberrant autoimmune response in their native form while others acquire this feature after post-translational modifications such as citrullination, carbamylation or acetylation. It is of interest that also the enzymes catalyzing such post-translational modifications (e.g. the protein arginine deiminases) can transform themselves into autoantibodies in RA. The purpose of this review article is to provide an overview of relevant literature published over the last years regarding novel autoantibodies and their possible diagnostic and prognostic significance in RA.
О разложениях решений уравнения Риккати в сходящиеся ряды
Authors: Samovol Vladimir Simkhovich
Published: April 2019

В статье рассматривается уравнение Риккати
с коэффициентами, раскладывающимися
в сходящиеся степенные ряды в окрестности
бесконечности. Исследуются
продолжаемые решения таких уравнений.
Методами степенной геометрии получены
условия разложения этих решений в сходящиеся ряды.
Представлен алгоритм
вычисления таких рядов.
Библиография: 7 названий.
О сопряжeнности стабилизаторов действий редуктивных групп
Authors: Popov Vladimir Leonidovich
Published: April 2019

Доказано, что основной результат работы [1]
является частным случаем
более общего утверждения, которое можно вывести
с помощью короткого рассуждения из классических
теорем Ричардсона и Луны.
Библиография: 7 названий.
Temperature Dependence of Plasmodium falciparum Erythrocytic Stage Development
Authors: Singhaboot Yutatirat , Keayarsa Srisuda , Piaraksa Nattaporn , Phumratanaprapin Weerapong , Kunawut Parinya , Dondorp Arjen , Chotivanich Kesinee
Published: April 2019

Plasmodium falciparum infection causes febrile illness and severe disease with multiple organ failure and death when treatment is delayed. Antipyretic treatment is standard, and inducing hypothermia has been proposed to protect the brain in cerebral malaria. Here, we investigated the temperature dependence of asexual-stage parasite development and parasite multiplication in vitro. Plasmodium falciparum laboratory strain TM267 was incubated for 2 hours (short exposure) or 48 hours (continuous exposure) at different temperatures (32°C, 34°C, 35°C, 38°C, 39°C, and 40°C). The starting parasite developmental stage (ring, trophozoite, or schizont) varied between experiments. The parasite multiplication rate (PMR) was reduced under both hyper- and hypothermic conditions; after continuous exposure, the mean PMR ± SD was 9.1 ± 1.2 at 37°C compared with 2.4 ± 1.8 at 32°C, 2.3 ± 0.4 at 34°C, and 0.4 ± 0.1 at 40°C (P < 0.01). Changes in PMR were not significant after 2-hour exposure at temperatures ranging from 32°C to 40°C. Morphological changes in parasite cytoplasm and nucleus could be observed after long exposure to low or high temperature. After 48-hour incubation, rosette formation (≥ 2 uninfected red blood cells bound to infected red blood cells) was decreased at 34°C or 39°C compared with that at 37°C. In conclusion, both hyper- and hypothermia reduce PMR and delay erythrocytic stage development of P. falciparum, subsequently reducing rosette formation.
Safety Argument Considerations for Public Road Testing of Autonomous Vehicles
Authors: Koopman Philip , Osyk Beth
Published: April 2019

Autonomous vehicle (AV) developers test extensively on public roads, potentially putting other road users at risk. A safety case for human supervision of road testing could improve safety transparency. A credible safety case should include: (1) the supervisor must be alert and able to respond to an autonomy failure in a timely manner, (2) the supervisor must adequately manage autonomy failures, and (3) the autonomy failure profile must be compatible with effective human supervision.

Human supervisors and autonomous test vehicles form a combined human-autonomy system, with the total rate of observed failures including the product of the autonomy failure rate and the rate of unsuccessful failure mitigation by the supervisor. A difficulty is that human ability varies in a nonlinear way with autonomy failure rates, counter-intuitively making it more difficult for a supervisor to assure safety as autonomy maturity improves. Thus, road testing safety cases must account for both the expected failures during testing and the practical effectiveness of human supervisors given that failure profile. This paper outlines a high level safety case that identifies key factors for credibly arguing the safety of an on-road AV test program. A similar approach could be used to analyze potential safety issues for high capability semi-autonomous production vehicles.
A Stochastic Physical Simulation Framework to Quantify the Effect of Rainfall on Automotive Lidar
Authors: Berk Mario , Dura Michael , Vargas Rivero Jose , Schubert Olaf , Kroll Hans-Martin , Buschardt Boris , Straub Daniel
Published: April 2019

The performance of environment perceiving sensors such as e.g. lidar, radar, camera and ultrasonic sensors is safety critical for automated driving vehicles. Therefore, one has to assess the sensors’ performance to assure the automated driving system’s safety. The performance of these sensors is however to some degree sensitive towards adverse weather conditions. A challenge is to quantify the effect of adverse weather conditions on the sensor’s performance early in the development of an automated driving system. This challenge is addressed in this work for lidar sensors. The lidar equation was previously employed in this context to derive estimates of a lidar’s maximum range in different weather conditions. In this work, we present a stochastic simulation framework based on a probabilistic extension of the lidar equation, to quantify the effect of adverse rainfall conditions on a lidar’s raw detection performance. To this end, we combine basic probabilistic models for key rainfall parameters with Mie theory and the theory of signal detection in a Monte Carlo simulation framework. This allows to analyze and optimize a sensor’s design early in the sensor development, when physical testing is not yet possible. A challenge not addressed in this work is to include the effect of road spray water on the lidar’s performance. Combining the effect of other noise sources with the presented framework in a ray tracer is an opportunity for realistic physical lidar simulations and would allow to virtually estimate the performance of a lidar’s object detection and tracking performance. Such simulations could contribute to verify the safety of automated driving functionalities.
Screening of Potential Biomass-Derived Streams as Fuel Blendstocks for Mixing Controlled Compression Ignition Combustion
Authors: Fioroni Gina , Fouts Lisa , Luecke Jon , Vardon Derek , Huq Nabila , Christensen Earl , Huo Xiangchen , Alleman Teresa , McCormick Robert , Kass Michael , Polikarpov Evgueni , Kukkadapu Goutham , Whitesides Russell A.
Published: April 2019

Mixing controlled compression ignition, i.e., diesel engines are efficient and are likely to continue to be the primary means for movement of goods for many years. Low-net-carbon biofuels have the potential to significantly reduce the carbon footprint of diesel combustion and could have advantageous properties for combustion, such as high cetane number and reduced engine-out particle and NOx emissions. We developed a list of over 400 potential biomass-derived diesel blendstocks and populated a database with the properties and characteristics of these materials. Fuel properties were determined by measurement, model prediction, or literature review. Screening criteria were developed to determine if a blendstock met the basic requirements for handling in the diesel distribution system and use as a blend with conventional diesel. Criteria included cetane number ≥40, flashpoint ≥52°C, and boiling point or T90 ≤338°C. Blendstocks needed to be soluble in diesel fuel, have a toxicity no worse than conventional diesel, not be corrosive, and be compatible with fuel system elastomers. Additionally, cloud point or freezing point below 0°C was required. Screening based on blendstock properties produced a list of 12 that were available as fuels or reagent chemicals or could be synthesized by biofuels production researchers. This group included alkanes, alcohols, esters, and ethers. These candidates were further examined for their impact fuel properties upon blending with a conventional diesel fuel. Blend properties included cetane number, lubricity, conductivity, oxidation stability, and viscosity. Results indicate that all 12 candidates can meet the basic requirements for diesel fuel blending, although in some cases would require additive treatment to meet requirements for lubricity, conductivity, and oxidation stability.
Effects of Lambda on Knocking Characteristics and RON Rating
Authors: Hoth Alexander , Pulpeiro Gonzalez Jorge , Kolodziej Christopher P. , Rockstroh Toby
Published: April 2019

The knock resistance of fuels has been historically measured using the ASTM RON and MON methods. However, significant discrepancies between the fuel octane number and knock-limited performance in modern spark-ignited (SI) engines have been well-documented. Differences between the operating conditions of the Cooperative Fuels Research (CFR) engine during RON rating and those attained in modern SI engines have been highlighted in the literature. While octane ratings are performed for each fuel on the CFR engine at the lambda that provides the highest knockmeter reading, modern SI engines are generally operated at stoichiometry and knock intensity is based on the high frequency cylinder pressure oscillations associated with knocking combustion. In the present work, an instrumented CFR engine was used to analyze lambda effects on both the conventional knockmeter RON rating method and cylinder pressure transducer based knock intensity. It was found that both knock intensity metrics reduced significantly at stoichiometry for highly iso-paraffinic fuels (such as primary reference fuels), compared to test fuels composed of higher ethanol or aromatic content. This behavior had a significant impact on how the octane ratings of the fuels were perceived at stoichiometric conditions.
Investigation of Drag Reduction Technologies for Light-Duty Vehicles
Using Surface, Wake and Underbody Pressure Measurements to Complement
Aerodynamic Drag Measurements
Authors: de Souza Fenella , Raeesi Arash , Belzile Marc , Caffrey Cheryl , Schmitt Andreas
Published: April 2019

A multi-year, multi-vehicle study was conducted to quantify the aerodynamic drag
changes associated with drag reduction technologies for light-duty vehicles.
Various technologies were evaluated through full-scale testing in a large
low-blockage closed-circuit wind tunnel equipped with a rolling road, wheel
rollers, boundary-layer suction and a system to generate road-representative
turbulent winds. The technologies investigated include active grille shutters,
production and custom underbody treatments, air dams, wheel curtains, ride
height control, side mirror removal and combinations of these.

This paper focuses on mean surface-, wake-, and underbody-pressure measurements
and their relation to aerodynamic drag. Surface pressures were measured at
strategic locations on four sedans and two crossover SUVs. Wake total pressures
were mapped using a rake of Pitot probes in two cross-flow planes at up to 0.4
vehicle lengths downstream of the same six vehicles in addition to a minivan and
a pick-up truck. A smaller rake was used to map underbody total pressures in one
cross-flow plane downstream of the rear axle for three of these vehicles.

The results link drag reduction due to various technologies with specific changes
in vehicle surface, rear underbody and wake pressures, and provide a database
for numerical studies. In particular, the results suggest that existing or
idealized prototype technologies such as active grille shutters, sealing the
external grille and ride height control reduce drag by redirecting incoming flow
from the engine bay or underbody region to smoother surfaces above and around
the vehicle. This mechanism can enhance the reduction in wheel drag due to
reduced wheel exposure at lowered ride height. Sealing the external grille was
found to redirect the flow more efficiently than closing the grille shutters,
and resulted in greater drag reduction. Underbody treatments were also found in
some cases to redistribute the flow around the vehicle to reduce pressure drag
in addition to underbody friction drag. The magnitude and spatial extent of the
measured pressure changes due to the various technologies were often consistent
with the amount of drag reduction.
Optimization of Catalytic Converter Design to Improve Under-Hood Thermal Management
Authors: El-Sharkawy Alaa , Arora Dipan , Huxford Michael W.
Published: April 2019

The Catalytic Converter along with the inlet pipe and heat shields are part of the exhaust system that emits powerful heat to the surrounding components. With increasing need for tight under-hood spaces it is very critical to manage the heat emitted by the exhausts that may significantly increase temperature of surrounding components. In this paper a design methodology for catalytic converter has been applied which optimizes the design of the catalytic converter to reduce the surface temperature. The exhaust surface temperature is simulated as a function of time to account for transient effects. The simulation also considers various duty cycles such as road load, city traffic and grade driving conditions. To control the heat output of the exhaust system to the surrounding components different materials and properties of catalytic converter have been considered to reduce radiative heat transfer. The most influential design factors for the catalytic converter which affect the surface temperature of the exhaust system have been identified with this process. The paper summarizes the optimization steps necessary to meet the optimal functional goals for the vehicle as mentioned above. Taguchi's Design for Six Sigma (DFSS) methods have been employed to conduct this analysis in a robust way.
As práticas corporais alternativas e a Educação Física: uma revisão sistemática
Authors: Gomes Lígia , Almeida Felipe Quintão , Galak Eduardo
Published: April 2019

Este artigo tem por objetivo investigar a produção do conhecimento sobre as Práticas Corporais Alternativas (PCAs) no campo acadêmico da Educação Física. Trata-se de um levantamento sobre essa temática entre os anos de 1979-2015, em cinco periódicos de relevância no campo acadêmico. Identificaram-se aspectos sobre as significações e proposições das PCAs, bem como as concepções sobre o corpo e seus usos. Foram analisados os aspectos vinculados às tradições e gênese dessas práticas no interior da área e suas articulações com diferentes práticas corporais. Os resultados se pautam na inserção da PCAs no campo acadêmico, suas propostas e vínculos com a Educação Física, na relação entre corpo e mente, religiosidade e espiritualidade (holismo), bem como na propagação dessas práticas no campo da Educação Física.
Legislating community engagement at the Australian local government level
Authors: Christensen Helen
Published: April 2019

Community engagement has assumed a more salient role in the operations of Australia’s local governments. A vast number of legislative instruments and reporting requirements are imposed upon local governments by the states and the Northern Territory across Australia’s seven local government jurisdictions. Consequently, a set of identifiable practices is solidifying as a core element of local government practice and state–local relations. However, while practices have recently proliferated, it is easy to forget that they are relatively new. This article examines the legislative frameworks of Australian local government systems by chronologically mapping the development of legislation and other reporting requirements. It is argued that community engagement now occupies a central place in local government, and that the jurisdictions use four different types of approaches, often simultaneously, which can fruitfully be described as ‘prescriptive’, ‘aspirational’, ‘empowering’ and ‘hedging’. The discussion draws comparative observations and identifies key issues and challenges for the future of community engagement.

KeywordsCommunity engagement; Australia; local government; public participation; legislation
Nonlinear forcing mechanisms of the terdiurnal solar tide and their impact on the zonal mean circulation
Authors: Lilienthal Friederike , Jacobi Christoph
Published: April 2019

Abstract. We investigate the forcing mechanisms of the terdiurnal solar tide in the middle atmosphere using a mechanistic global circulation model. In order to quantify their individual contributions, we perform several model experiments and separate each forcing mechanism by switching off the remaining sources. We find that the primary excitation is owing to the terdiurnal component of solar radiation absorption in the troposphere and stratosphere. Secondary sources are nonlinear tide-tide interactions and gravity wave-tide interactions. Thus, although the solar heating clearly dominates the terdiurnal forcing in our simulations, we find that nonlinear tidal and gravity wave interactions contribute in certain seasons and altitudes. By slightly enhancing the different excitation sources, we test the sensitivity of the background circulation on these changes of the dynamics. As a result, the increase of terdiurnal gravity wave drag can strongly affect the middle and upper atmosphere dynamics, including an irregular change of the terdiurnal amplitude, a weakening of neutral winds in the thermosphere, and a significant temperature change in the thermosphere, depending on the strength of the forcing. On the contrary, the influence of nonlinear tidal interactions on the middle atmosphere background dynamics is rather small.
Reduced phosphorus loads from the Loire and Vilaine rivers were accompanied by increasing eutrophication in the Vilaine Bay (south Brittany, France)
Authors: Ratmaya Widya , Soudant Dominique , Salmon-Monviola Jordy , Plus Martin , Cochennec-Laureau Nathalie , Goubert Evelyne , Andrieux-Loyer Françoise , Barillé Laurent , Souchu Philippe
Published: April 2019

Abstract. The evolution of eutrophication parameters (i.e., nutrients and phytoplankton
biomass) during recent decades was examined in coastal waters of the Vilaine
Bay (VB, France) in relation to changes in the Loire and Vilaine rivers.
Dynamic linear models were used to study long-term trends and seasonality of
dissolved inorganic nutrient and chlorophyll a concentrations (Chl a) in
rivers and coastal waters. For the period 1997–2013, the reduction in
dissolved riverine inorganic phosphorus (DIP) concentrations led to the
decrease in their Chl a levels. However, while dissolved inorganic nitrogen (DIN) concentrations decreased only slightly in the Vilaine, they increased
in the Loire, specifically in summer. Simultaneously, phytoplankton in the VB
underwent profound changes with increase in biomass and change in the timing
of the annual peak from spring to summer. The increase in phytoplankton
biomass in the VB, manifested particularly by increased summer diatom
abundances, was due to enhanced summer DIN loads from the Loire, sustained by
internal regeneration of DIP and dissolved silicate (DSi) from sediments. The
long-term trajectories of this case study evidence that significant reduction
of P inputs without simultaneous N abatement was not yet sufficient to
control eutrophication all along the Loire–Vilaine–VB continuum. Upstream
rivers reveal indices of recoveries following the significant diminution of
P, while eutrophication continues to increase downstream, especially when N
is the limiting factor. More N input reduction, paying particular attention
to diffuse N sources, is required to control eutrophication in receiving VB
coastal waters. Internal benthic DIP and DSi recycling appears to have
contributed to the worsening of summer VB water quality, augmenting the
effects of anthropogenic DIN inputs. For this coastal ecosystem, nutrient
management strategies should consider the role played by internal nutrient
loads to tackle eutrophication processes.
A Comprehensive Evaluation of the National Water Model (NWM) – Height Above Nearest Drainage (HAND) Flood Mapping Methodology
Authors: Johnson J. Michael , Munasinghe Dinuke , Eyelade Damilola , Cohen Sagy
Published: April 2019

Abstract. Flood maps are needed for emergency response, research, and planning. The Height Above Nearest Drainage (HAND) technique is a low-complexity, terrain-based approach for inundation mapping from elevation, discharge-height relationship, and streamflow data. The recent operational capacities of the NOAA National Water Model (NWM) and pre-processed HAND products from the University of Texas offer an operational framework for real-time and forecast flood mapping across the United States. This paper offers the first detailed evaluation of the coupled NWM-HAND approach by comparing NWM-HAND simulations to a database of remotely sensed flood maps. These comparisons are made both quantitatively and through a detailed evaluation of selected results. The results show that NWM-HAND performs well in the majority of cases with 70 % of the calculated flood maps yielding an agreement of 80 % or better with the remote sensing observations. Persistent inaccuracies occur in lower-order reaches, regions of low relief, and when the NWM misses substantially either in magnitude or timing.
Uncertainty in regional estimates of capacity for carbon capture and storage
Authors: Wilkinson Mark , Polson Debbie
Published: April 2019

Abstract. Carbon capture and storage (CCS) is a potentially important technology for the mitigation of industrial CO2 emissions, however the majority of the subsurface storage capacity is in geological strata for which there is relatively little information, the so-called saline aquifers. Published estimates of the potential storage capacity of such formations, based on limited data, often give no indication of the uncertainty, despite there being substantial uncertainty associated with the data used to calculate such estimates. Using only publicly available data, a group of experts independently estimated the storage capacity of 7 regional saline aquifers. The experts produced a wide range of estimates for each aquifer due a combination of using different published values for some variables and differences in their judgements of the aquifer properties such as area and thickness. The range of storage estimates produced by the experts shows that there is significant uncertainty in such estimates, in particular the experts' range does not capture the highest possible capacity estimates, meaning that by not accounting for uncertainty, such regional estimates may underestimate the true storage capacity. The result is applicable to single values of storage capacity of regional potential, but not to detailed studies of a single storage site.
Quantification of uncertainty in 3-D seismic interpretation:
implications for deterministic and stochastic geomodelling and
machine learning
Authors: Schaaf Alexander , Bond Clare E.
Published: April 2019

Abstract. In recent years uncertainty has been widely recognized in geosciences, leading to an increased need for its quantification. Predicting the subsurface is an especially uncertain effort, as our information either comes from spatially highly limited direct (1-D boreholes) or indirect 2-D and 3-D sources (e.g. seismic). And while uncertainty in seismic interpretation has been explored in 2-D, we currently lack both qualitatitive and quantitative understanding of how interpretational uncertainties of 3-D datasets are distributed. In this work we analyze 78 seismic interpretations done by final year undergraduate (BSc) students of a 3-D seismic dataset from the Gullfaks field located in the northern North Sea. The students used Petrel to interpret multiple (interlinked) faults and to pick the Base Cretaceous Unconformity and Top Ness horizon (part of the Mid-Jurassic Brent Group). We have developed open-source Python tools to explore and visualize the spatial uncertainty of the students fault stick interpretations, the subsequent variation in fault plane orientation and the uncertainty in fault network topology. The Top Ness horizon picks were used to analyze fault offset variations across the dataset and interpretations, with implications for fault throw. We investigate how this interpretational uncertainty interlinks with seismic data quality and the possible use of seismic data quality attributes as a proxy for interpretational uncertainty. Our work provides a first quantification of fault and horizon uncertainties in 3-D seismic interpretation, providing valuable insights into the influence of seismic image quality on 3-D interpretation, with implications for deterministic and stochastic geomodelling and machine learning.
Geopolítica de la fragmentación y poder infraestructural. El Proyecto "One Belt, One Road" y América Latina
Authors: Herrera Santana David
Published: April 2019

El artículo busca reflexionar sobre la forma en que, a partir de la década de 1970, se ha producido una “geopolítica de la fragmentación”, referida a la forma fragmentaria de producción del espacio capitalista mundial que tiende, al mismo tiempo, hacia procesos de diferenciación y desarrollo desigual, así como a otros de nivelación e igualación para propiciar la articulación de la totalidad. Se plantea el concepto “poder infraestructural” como punto de referencia de análisis de la producción de espacios materiales y fijos espaciales, para comprender el papel geopolítico que juega la infraestructura como elemento nivelador y de igualación espacial. De esta manera, el artículo propone comprender al proyecto OBOR como una forma de producción fragmentaria, diferencial y desigual del espacio que responde a: 1) la dinámica del capitalismo chino y la necesaria articulación de espacios para su reproducción; 2) su tendencia hacia la sobreacumulación y 3) la incrementada competencia intercapitalista. Así, se plantea una nueva lógica geopolítica de producción y articulación de espacios fragmentarios que pretende materializarse en Eurasia y África, y que ahora también incluye a Latinoamérica, región en la cual existen diversas consecuencias geopolíticas derivadas del proyecto OBOR, sobre todo en el ámbito de la dependencia histórica.
Capitalismo y criminalización de la frontera en el circuito sacoleiro
Authors: García de las Heras González Mariano
Published: April 2019

Eric Gustavo Cardin (2015) A Expansão do Capital e as Dinâmicas das Fronteiras. Jundiaí: Paco Editorial, 235 pp. ISBN: 978-85-8148-831-8.
The Epistemological Turn in World Christianity: Engaging Decoloniality in Latin American and Caribbean Christian Discourses
Authors: Barreto Raimundo C.
Published: April 2019

This article critically inquires into world Christianity discourse and its methodological tools from a Latin American perspective. It argues that since world Christianity’s initial concepts and theories derived to a large extent from the African experience and from a pronounced Anglo-Saxon perspective, its methodological tools may not automatically apply to Latin America. Given the interdisciplinary and intercontextual nature of the field, world Christianity scholarship requires the use of a variety of methods and approaches that take seriously the reality and location of peoples, communities, and discourses with whom scholars partner for the production of knowledge. With a focus on Latin America, the author brings world Christianity discourse into conversation with Latin American decolonial theory. The backdrop of this conversation is the revitalization of indigenous communities and religions in Latin America, and their contribution to a fresh view of interculturality as a language for a life betwixt and between in the region.
The Hermeneutics of Contemplation and World Christianity
Authors: Müller Retief , Pretorius Helgard
Published: April 2019

World Christianity attracts attention from a wide array of scholars, including theologians and religious studies scholars. However, do these approaches communicate with each other? Should they? Or may a hardening of disciplinary and conceptual boundaries be expected, and even preferred? The principal problem informing this article is an abiding dichotomy between theology on the one hand and religious studies approaches on the other. From our perspective, the question is whether theologically oriented research in world Christianity can be of value across the academic spectrum. Or are theological studies conceptually confined by the walls of their own normative commitments? The authors argue that maintaining an open threshold between different disciplines in the study of “other” expressions of world Christianity is important and that this may require that theologically rooted researchers adopt what the philosopher of religion D. Z. Phillips calls a “hermeneutics of contemplation.” In an important book on the subject, Phillips—addressing religious studies scholars rather than theologians—identifies theology with what he terms the “hermeneutics of recollection,” and secular theories of religion with the “hermeneutics of suspicion.” When the latter approach is shown to fall short of doing justice to religious complexity, Phillips posits the “hermeneutics of contemplation” as a more appropriate response to the religious other. We ask whether the reverse may also hold true for theologians, namely, a shift in disposition from a hermeneutics of recollection to contemplation? To ground the theoretical discussion, reference is made to research on the theme of rain rituals and prayers.
Looking for Langston: Themes of Religion, Sexuality, and Evasion in the Life and Work of Langston Hughes
Authors: Best Wallace
Published: April 2019

Langston Hughes wrote as much about religion as he did any other topic. His evasiveness about his own “personal” religion, however, has prevented forthright analyses of his religious writings, leading to the false conclusion that he was antireligious. Hughes was just as evasive about his sexuality even though he is widely considered to have been gay. I contend that Hughes's evasiveness about religion and sexuality was strategic and a style of life that eschewed the notion of fixed identities. Hughes's approach to religion was not static and his sexuality was most likely on a spectrum, making attempts to mark him religiously or in terms of a particular sexual identity difficult, if not impossible. What we learn from Hughes's example is that a lack of personal faith does not equate anti-religiosity and that one's sexuality can be a matter of personal construction. Contemporary notions of “the closet” and the performance of “coming out” most often police the personal construction of sexuality while it affirms normalcy and the religious and sexual status quo.
The Timeliness of Langston Hughes
Authors: Campbell James T.
Published: April 2019

Originally presented as a closing comment at the 2017 “Remembering Langston Hughes” conference, this essay explores the timeliness of Hughes's work in two distinct senses. First, it places Hughes in the context of the post–World War I decade, a transformative moment not only in African American culture but also in American culture as a whole. Second, it examines Hughes's uncanny ability to speak across time, to speak directly, pointedly, to the changing circumstances in which we find ourselves, both as individuals and as a society. The essay closes with a short reflection on the relevance of Hughes and his work to American politics today.
A rotating quantum system without angular momentum and shape deformations
Authors: Serrano-Ensástiga E.
Published: April 2019

The free translational dynamics of an n-body quantum system has many applications, e.g. in molecular and nuclei systems, where it is common to classify the degrees of freedom of the system in 3 rotational and 3n - 6 shape coordinates. It is known that there exists an interaction between the shape and orientation degrees of freedom. In particular, changes of the shape could induce an orientation change. In this work, it is shown a rotating quantum system which does not deform its shape probability density and with vanishing angular momentum. The orientation change is monitored with a localized orientation wavefunction. We characterize the localized wavefunctions and study their evolution under a rigid rotor-like Hamiltonian, concluding that this kind of wavefunctions may rotate by their own.
DETERMINAÇÃO ULTRASSONOGRÁFICA DO SEXO FETAL EM ÉGUAS DA RAÇA CRIOULA ENTRE O 59° E O 126º DIAS DE GESTAÇÃO, EM CONDIÇÕES DE CAMPO
Authors: Busato Eduarda Maciel , Weiss Romildo Romualdo , De Abreu Ana Claudia Machinski Rangel , Bergstein-Galan Tácia Gomes , Marcondes Felipe Augusto Beckert , Kozicki Luiz Ernandes , De Lara Natália Santana Siqueira
Published: April 2019

O presente trabalho teve como objetivo comparar a eficácia da sexagem fetal pelo tubérculo genital com a sexagem baseada na avaliação das gônadas fetais em equinos, quando realizadas em condições de campo. Foram utilizadas 27 éguas da raça Crioula, as quais foram submetidas aos referidos exames de sexagem fetal por ultrassonografia transretal em dois momentos distintos. Foi realizada uma única avaliação por técnica em cada animal e o sexo dos potros foi confirmado ao nascimento. A sexagem pela identificação e posicionamento do tubérculo genital ocorreu entre 59 e 65 dias de gestação, resultando em uma taxa de diagnósticos possíveis de 51,9% (14/27) e acurácia de 85,7% (12/14). A sexagem baseada na avaliação das gônadas fetais foi realizada entre 117 e 126 dias de gestação, sendo a taxa de diagnósticos possíveis 88,9% (24/27) e a acurácia 83,3% (20/24). A acurácia de ambas as técnicas não apresentou diferença estatística (P=0,85), no entanto a taxa de diagnósticos possíveis foi superior pela técnica baseada nas gônadas fetais (P=0,003). Conclui-se que, em condições de campo (não otimizadas), a sexagem fetal pela avaliação das gônadas fetais apresentou melhor eficácia, tendo como principal vantagem a maior taxa de diagnósticos possíveis.
Co-firing Coal with Biomass under Mandatory Obligation for Renewable Electricity: Implication for the Electricity Mix
Authors: Bertrand Vincent
Published: April 2019

This paper analyses the effect of recognizing co-firing coal with biomass as renewable electricity. We provide simulations for the French and German electricity mix. Results indicate that, if co-firing is recognized as a renewable, coal may crowd-out traditional renewables with increased generation and additional investments. Regarding CO2 emissions, we find surges when co-firing is recognized as a renewable. The rise is more significant in Germany due to greater coal capacity. In France, the magnitude depends on the share of nuclear with a lower increase when old nuclear plants are prolonged. Finally, we find that recognizing co-firing as a renewable reduces the overall costs for electricity. We balance the cost saving with the increased social cost from higher CO2 emissions. Results show that the cost saving is lower than the increased carbon cost for society with carbon valuation around 100 Euros/tCO2, except in France when old nuclear plants are not decommissioned.