bluuebunny/crossref_metadata_2025 huggingface dataset:
ANTİKOAGÜLAN RODENTİSİTLERE KARŞI DİRENÇ BELİRLEME YÖNTEMLERİ
Authors: NUHOĞLU Zeyno , AKSOY Abdurrahman
Published: April 2020

Antikoagülan rodentisitlerin yoğun kullanımı sonucu kemirgen popülasyonlarında 5-10 yıl içinde antikoagülanlara karşı direnç gelişebilmektedir. Antikoagülanlara karşı direnç ilk defa 1958 yılında İngiltere’de tespit edilmiştir. Kemirgen popülasyonlarında direncin belirlenmesi, entegre risk yönetiminin önemli bir unsurudur. Kemirgen mücadelesinde, uygulama doğru bir şekilde yapıldığı halde sonuç alınamaması, rodentisit direncinin bir göstergesi olarak kabul edilmektedir. Antikoagülan rodentisitlere karşı; farmakokinetik, beslenme ve farmakodinamik tabanlı üç tip direnç tanımlanmıştır. Antikoagülan rodentisit direncini belirleme yöntemleri bilimsel metotların gelişmesiyle beraber sürekli yenilenmektedir. Bu yöntemler; beslenme, kan pıhtılaşma testi (Blood Clotting Response Testing, BCRT), vitamin K epoksit redüktaz gen mutasyonun (Hepatic Vitamin K Epoxide Reductase, VKOR) belirlenmesi ve direnç belirteci genotiplerinin ortaya konulmasıdır. Popülasyonda antikoagülan rodentisitlere karşı direnç tespit edildiğinde, dirençli bireylerin belirlenmesi ve direncin yayılmasını engellemek için doğru bir strateji izlenerek mücadele edilmesi şarttır. Bu derlemede, başarılı bir kemirgen mücadelesi için antikoagülan rodentisitlere karşı gelişen direnç belirleme yöntemleri incelenmiştir.
SÜT İKAME YEMİ
Authors: KÖSE Samet , ŞEHU Adnan
Published: April 2020

Süt işletmelerinin gelişimini ve karlılığını yükseltmek amacıyla hayvan beslemede alternatif yöntemler geliştirilmektedir. Bunlardan bir tanesi de buzağı beslemede süt yerine süt ikame yemi kullanmaktır. Süt ikame yemleri hayvansal ve bitkisel kaynaklı protein ve yağların belirli oranlarda bir araya getirilmesi ile oluşturulmuş süte alternatif bir yemdir. Süt ikame yemleri ile beslenmede süt ile beslemeye yakın veya daha iyi sonuçlar elde edilmiştir.
EL ROL DE LAS LÍNEAS DE BASE EN EL DERECHO DEL MAR Y EL PROCESO DE DELIMITACIÓN MARÍTIMA ENTRE EL PERÚ Y CHILE
Authors: Peruana de Derecho Internacional Sociedad
Published: April 2020

El presente artículo desarrolla el rol de las líneas de base para la delimitación de losespacios marítimos de los Estados, conforme a la Convención de las Naciones Unidas sobreDerecho del Mar (CONVEMAR), así como su trascendencia para el Perú y para lademanda de sus legítimos reclamos ante la Corte Internacional de Justicia en lacontroversia marítima con Chile.
CONVENIO SOBRE ARREGLO DE DIFERENCIAS RELATIVAS A INVERSIONES ENTRE ESTADOS Y NACIONALES DE OTROS ESTADOS (CIADI)
Authors: Peruana de Derecho Internacional Sociedad
Published: April 2020

El artículo explica el funcionamiento del Centro Internacional de Arreglo deDiferencias Relativas a Inversiones entre Estados y nacionales de otros Estados, teniendo encuenta la importancia de dicho centro en la solución de conflictos hoy en día en el Perú.
EL ASILO DIPLOMÁTICO Y EL CASO ALAN GARCÍA
Authors: Peruana de Derecho Internacional Sociedad
Published: April 2020

El asilo diplomático o político constituye una institución relevante dentro delsistema universal de protección de Derechos Humanos y libertades fundamentales. Sibien se regula básicamente en América Latina, también existe cierta práctica en el restode los países del mundo, aún cuando en principio no se le conceda reconocimientojurídico. En este sentido, el asilo diplomático es una contribución que realiza AméricaLatina, en el marco del Derecho Internacional Americano, a los Derechos HumanosInternacionales y al Derecho Internacional en general. Si bien se concede el asilodiplomático por motivos de persecución política, en el caso de Alan García, Uruguay hadenegado este asilo pues no existían delitos políticos. La finalidad de este artículo serápresentar algunos conceptos básicos sobre el asilo diplomático y el caso de Alan García,donde fue denegado dicho asilo por tratarse de investigación por delitos comunes.
LA REGULACIÓN JURÍDICA DE LAS RELACIONES PATRIMONIALES DE LAS PAREJAS INTERNACIONALES EN LA UE
Authors: Peruana de Derecho Internacional Sociedad
Published: April 2020

Cuando la pareja tiene una dimensión internacional por concurrir algún elementoextranjero, sea por la distinta nacionalidad o residencia de sus miembros integrantes, por laubicación de los bienes que componen su patrimonio en diferentes Estados, etc., resultasumamente conveniente establecer reglas armonizadoras para lograr soluciones uniformesante los eventuales problemas que se puedan suscitar. De este modo, se potencia la seguridadjurídica y se favorece exponencialmente la libertad de circulación de las parejasinternacionales. Para dar cumplimiento a dichos objetivos se promulgaron los Reglamentos(UE) 2016/1103 y 2016/1104 cuya plena aplicación ha tenido lugar a principios de 2019 yque, a pesar de haber sido gestados en el seno de la Unión Europea, en sus aspectos subjetivosestán dirigidos a cónyuges y parejas de hecho provenientes también de terceros países.
THE NEXUS OF E-GOVERNMENT AND INCREASED PRODUCTIVITY RELATIVE TO INCOME LEVEL COMPARISON
Authors: Faid Gul , Tariq Majeed Muhammad , Ishtiaq Ahmad , Zeynvand Vahid Lorestani , Meyer Daniel Francois , Máté Domicián
Published: April 2020

Purpose – this study aims to determine the influence of E-government on productivity in the case of different countries comparing by income level. Research methodology – static (fixed and random) and dynamic (GMM) panel regression. Findings – a disaggregated analysis reveals that middle-income countries are driving global productivity growth by implementing ICTs infrastructure in the public sector. Research limitations – this study focuses on severe developed and developing economies, whereas each country may not benefit from E-government implementation as gains might be offset with the enormous costs of implementation. Practical implications – the government may rely more on online services in the provision of its responsibilities because it enhances the efficiency of public sectors. Originality/Value – the study is a novel measure of E-government that covers additional multiple dimensions.
THE ROLE OF ETHICS, TRUST, AND SHARED VALUES IN THE CREATION OF LOYALTY: EMPIRICAL EVIDENCE FROM THE MOROCCAN UNIVERSITY™
Authors: Nejjari Zakaria , Aamoum Hanane
Published: April 2020

Purpose – This research discussed ethics, shared values, university image, and trust as factors of student loyalty. This investigation is performed to discover aspects that influence loyalty. Student loyalty factors were previously researched, but the bulk of the research covered only major loyalty factors such as shared values, trust and university image, but overlooked university ethics as a student loyalty determinant. Research methodology – This study is fundamentally a quantitative study using the methodology of survey research. The information is evaluated using AMOS by means of exploratory factor analysis and structural equation modelling (SEM). Findings – The results show how the image of the university, the ethics and the shared values of the graduates positively influence the trust, which affects loyalty. Research limitations – Regarding the limitations of the study which also reconfigure lines of future research, it is important to note, in the first place, the geographical restriction of the population under study to three Moroccan universities. Practical implications – Educational providers can use the findings to know what increase the loyalty and allocate resources to improve the determinants that affect the trust of the students, thus increasing the allegiance of the learners. Originality/Value – This research provides innovative knowledge regarding the maintenance of the university’s relations with its graduates.
BUSINESS CYCLES SYNCHRONISATIONS IN THE BALTIC COUNTRIES
Authors: Kregždė Arvydas
Published: April 2020

Purpose – The purpose of the paper is to investigate the level of real business cycles synchronisation between the Baltic and the Nordic countries and between the Baltic countries and the euro area. Research methodology – Wavelet analysis was employed to evaluate the level of synchronisation for different periods and time. Quarterly data from 1995 Q2 to 2019 Q4 was used. Findings – We discover the influence of several essential events in economies of the Baltic countries on the synchronisation: accession to the EU in 2004, the introduction of the euro in the Baltic countries and some external shocks. Research limitation – A lack of reliable long-term data from the Baltic countries does not allow performing calculation for other important financial variables. Practical implications – Results of the research are important for forecasting and implementing flexible economic policies of the Baltic countries. Originality/Value – Business cycles synchronisation between the Baltic countries themselves and between the Baltic countries, the Nordic countries and the euro area countries across time and various frequency dimensions was investigated for the first time.
NEW APPROACH TO CREATE MORE EFFECTIVE TEAMS IN THE INNOVATION PROCESS IN ENTERPRISES
Authors: Okoń-Horodyńska Ewa , Zachorowska-Mazurkiewicz Anna , Wisła Rafał , Sierotowicz Tomasz
Published: April 2020

The subject-related literature provided information about the skills, education, and formal competencies required
to join teams working on the innovation process. According to findings presented in this article, the previous studies have investigated
insufficiently the gender-related issues in the decisions of managers who involve specialists in the innovation process. Thus, the purpose
of this research was to identify, examine, and describe differences in the participation of men and women in the innovation process,
considering their personal characteristics, attitudes, and behaviours. The research covered 1,164 innovative companies – beneficiaries of
the European Union Cohesion Policy of 2007–2013. The survey was distributed independently to women and men participating in innovative
activities in the researched companies. Two independent responses were received from each company; thus, two independent data samples were
created. Both data composition and preliminary analysis adhere to the requirements of Principal Component Analysis. The results allow for
the new design proposal to increase the effectiveness of teams working on innovation-focused tasks. In addition to education and experience,
managers can now consider personal characteristics and better select women and men to drive innovation.
NuSTAR Detection of Quiescent Hard X-Ray Emission from SGR 0526–66 in the Large Magellanic Cloud
Authors: Park Sangwook , Bhalerao Jayant , Kargaltsev Oleg , Slane Patrick O.
Published: April 2020

The soft γ-ray repeater (SGR) 0526–66 is the first-identified magnetar, and is projected within the supernova remnant N49 in the Large Magellanic Cloud. Based on our ∼50 ks NuSTAR observation, we detect the quiescent-state 0526–66 for the first time in the 10–40 keV band. Based on the joint analysis of our NuSTAR and the archival Chandra ACIS data, we firmly establish the presence of the nonthermal component in the X-ray spectrum of 0526–66 in addition to the thermal emission. In the best-fit blackbody (BB) plus power-law (PL) model, the slope of the PL component (photon index Γ = 2.1) is steeper than those (Γ ≲ 1.5) for other magnetars. The soft part of the X-ray spectrum can be described with a BB component with the temperature of kT = 0.43 keV. The best-fit radius (R = 6.5 km) of the X-ray-emitting area is smaller than the canonical size of a neutron star. If we assume an underlying cool BB component with the canonical radius of R = 10 km for the neutron star in addition to the hot BB component (2BB + PL model), a lower BB temperature of kT = 0.24 keV is obtained for the passively cooling neutron star’s surface, while the hot spot emission with kT = 0.46 keV dominates the thermal spectrum (∼85% of the thermal luminosity in the 0.5–5 keV band). The nonthermal component (Γ ∼ 1.8) is still required.
Energy Budget of High-speed Plasma Flows in the Terrestrial Magnetotail
Authors: Ma 马 Yuduan 玉端 , Yang 杨 Jian 建 , Dunlop M. W. , Rae I. J. , Yang 杨 Junying 俊英
Published: April 2020

Significant advances have been presented for the theoretical model and quantitative investigation of the energy input from the solar wind and its subsequent release into the ring current, the Joule heating, and particle precipitation energy flux that are closely related to high-speed flows in the plasma sheet of the terrestrial magnetotail during both isolated and storm-time substorms. Here we further determine the plasma flow vorticity/shear and heating observed in the terrestrial magnetotail by the Magnetospheric Multiscale (MMS) mission by deducing that other energy may be dissipated along with the above-mentioned three energy releases. The energy transported by the flow is also estimated here. Three-dimensional observations have shown new detailed information that can be compared with quasi-2D simulations. In this investigation, we calculate vorticity/shear directly from simultaneous observation of four MMS satellites. Our results generally indicate that plasma heating or temperature enhancements are related to both the flow vorticity/shear and current density, but more strongly with flow vorticity/shear. This research suggests that the ubiquitous energy input from the solar wind can be used to estimate plasma heating or temperature enhancements in the absence of any process or phenomenon relating to explosive energy release in planetary magnetospheres.
Hyperfine Structure Constants for Levels of 175Lu+
Authors: Den Hartog E. A. , Lawler J. E. , Roederer I. U.
Published: April 2020

Accurate and complete atomic data are required for the determination of accurate stellar photospheric abundances. This includes hyperfine structure (HFS) for some elements—those with high nuclear spin and/or large nuclear magnetic moments. Lutetium is one such element. In this study, spectra of a commercial Lu–Ne hollow cathode lamp operating at a low current were recorded with the high-resolution University of Wisconsin 3 m focal length echelle spectrograph. These spectra of resolved and partially resolved hyperfine patterns for 35 ultraviolet and blue transitions of Lu ii have been studied for the purpose of extracting hyperfine constants. We present HFS constants for 16 levels of singly ionized lutetium, 10 of which have been measured for the first time.
High-resolution Spectra and Biosignatures of Earth-like Planets Transiting White Dwarfs
Authors: Kozakis Thea , Lin Zifan , Kaltenegger Lisa
Published: April 2020

With the first observations of debris disks as well as proposed planets around white dwarfs (WDs), the question of how rocky planets around such stellar remnants can be characterized and probed for signs of life becomes tangible. WDs are similar in size to Earth and have relatively stable environments for billions of years after initial cooling, making them intriguing targets for exoplanet searches and terrestrial planet atmospheric characterization. Their small size and the resulting large planet transit signal allows observations with next-generation telescopes to probe the atmosphere of such rocky planets, if they exist. We model high-resolution transmission spectra for planets orbiting WDs as they cool from 6000 to 4000 K, for (i) planets receiving equivalent irradiation to modern Earth, and (ii) planets orbiting at the distance around a cooling WD that allows for the longest continuous time in the habitable zone. All high-resolution transmission spectra are publicly available online and can be used as a tool to prepare and interpret upcoming observations with the James Webb Space Telescope, the Extremely Large Telescopes, as well as mission concepts like Origins, HabEx, and LUVOIR.
Lithobius (Ezembius) varioporus, a new species from eastern China (Lithobiomorpha, Lithobiidae)
Authors: Pei Sujian , Ma Huiqin , Liu Haipeng , Lu Yanmin , Hou Xiaojie
Published: April 2020

Lithobius (Ezembius) varioporussp. nov. (Lithobiomorpha, Lithobiidae), recently discovered from Longquanguan Town, Fuping County, Baoding City, Hebei Province, China, is described. Morphologically it resembles to Lithobius (Ezembius) laevidentata Pei, Ma, Hou, Zhu & Gai, 2015 from the Xinjiang Autonomous Region, but can be easily distinguished from the latter by the Tömösváry’s organ, slightly smaller than the adjoining ocelli, no secondary sexual modifications on male tibia 14 and 15, posterior accessory spine of legs 14 and 15 present and the number of coxal pores varying considerably from three to eight. The main morphological characters of the known Chinese species of the subgenusEzembius Chamberlin, 1919 based on adult specimens are presented.
Cicinnus chambersi: a new species of sack-bearer moth (Lepidoptera, Mimallonidae, Cicinninae) from southeastern Arizona, USA
Authors: St Laurent Ryan A. , Reeves Lawrence E. , Kawahara Akito Y.
Published: April 2020

A new species of cicinnine Mimallonidae, Cicinnus chambersisp. nov., is described from the Sky Islands Region of southern Arizona, USA. The new species is closely related to C. mexicana (Druce), type locality Veracruz, Mexico, based on morphology and genetics. The other Cicinnus species known from the United States, the common C. melsheimeri (type locality Pennsylvania, USA) is morphologically and genetically distinct from both C. chambersi and C. mexicana. The new species is compared to C. mexicana and C. melsheimeri, as well as other Mexican Cicinnus. The life history of C. chambersi is unknown, but its description should facilitate future studies on this rarely reported North American mimallonid, a species which may have only recently become established in the United States. Cicinnus chambersi is the fifth known Mimallonidae species from the United States, and the first described from the country in nearly half a century.
Les obstacles à la transition énergétique
Authors: Haëntjens Jean
Published: April 2020

Fin août 2018, le ministre français de la Transition écologique, en poste depuis un peu plus d’un an, Nicolas Hulot, jetait l’éponge. Force était de constater, selon lui, qu’avec la meilleure volonté du monde (et on ne pouvait la lui dénier), il était impossible de mettre en œuvre une transition écologique digne de ce nom sans la mobilisation de tous les acteurs, y compris économiques et institutionnels, de tous les secteurs. Opérer la transition écologique est bien une entreprise systémique ; elle implique un soutien et une coordination de tous, faute de quoi elle ne peut aboutir. Comme on l’a vu dans les différents articles déjà publiés dans la série que Futuribles consacre aux enjeux énergétiques et climatiques depuis mars dernier, la France et l’Europe ont de grandes ambitions en matière de transition vers la neutralité carbone. Pour autant, comme le montre ici Jean Haëntjens, confirmant le constat de Nicolas Hulot, les obstacles à la réussite d’une telle transition sont encore bien nombreux, et très souvent d’ordre idéologique et sociopolitique. Au-delà des comportements individuels, qui certes doivent changer (et qu’il faut inciter à évoluer), c’est bien au niveau des transformations des systèmes sociotechniques (transport, énergie, agriculture…), et de leur financement, que se situent les blocages. Face à ce constat et à des jeux d’acteurs complexes, l’urgence écologique fera-t-elle enfin bouger les lignes ?  S.D.
Transition énergétique : Chine, États-Unis et Union européenne
Authors: Eyl-Mazzega Marc-Antoine , Mathieu Carole
Published: April 2020

Dans ce deuxième volet de la série que nous consacrons aux questions climatiques et énergétiques, nous reproduisons un extrait de l’étude intitulée « La dimension stratégique de la transition énergétique. Défis et réponses pour la France, l’Allemagne et l’Union européenne », réalisée par les auteurs. Cet extrait nous semble en effet particulièrement éclairant sur les chaînes de valeur européennes des technologies bas carbone. Après avoir rappelé l’urgence de la transition énergétique et ses inégales avancées, Marc-Antoine Eyl-Mazzega et Carole Mathieu montrent combien les politiques de l’énergie et du climat renvoient aujourd’hui à des enjeux géopolitiques et géoéconomiques majeurs. Ce texte révèle particulièrement la relative faiblesse de l’Union européenne au regard de la Chine et des États-Unis, en raison d’une part de sa dépendance vis-à-vis de l’extérieur pour ses approvisionnements en métaux critiques ; d’autre part de son positionnement dans les chaînes de valeur des technologies bas carbone, qui jouent un rôle essentiel dans le déploiement des énergies renouvelables.  H.J.
Le trottoir, nouvel actif stratégique
Authors: Baraud-Serfaty Isabelle
Published: April 2020

« Le trottoir est à tout le monde » peut-on parfois entendre dans la rue à l’occasion d’un différend sur l’occupation de l’espace public. C’est le sentiment du promeneur et des habitants des villes qui en sont dotées. Mais est-ce encore vraiment le cas ? Le trottoir est-il encore un espace public, utilisable librement par tous et en toutes circonstances ? Isabelle Baraud-Serfaty, spécialiste des questions urbaines, pose ici la question et montre comment les trottoirs qui bordent la chaussée des villes ont évolué au fil du temps. De symbole de la « ville des infrastructures », il devient un enjeu d’intérêt à l’ère des nouvelles mobilités et des nouvelles fonctionnalités liées à la ville « intelligente ». À ce titre, il suscite donc de plus en plus de convoitises de la part des opérateurs de plates-formes numériques : une nouvelle couche, « informationnelle », se développe sur les trottoirs (plus particulièrement sur les bordures de trottoir), qui peut être exploitée à des fins de service aux usagers mais aussi à des fins commerciales. De fait, il devient indispensable, selon Isabelle Baraud-Serfaty, que les villes, les collectivités locales, l’intègrent dans leur gouvernance publique des espaces urbains, et que le trottoir fasse l’objet de régulations, de sorte que les informations qui le concernent ou qu’il recèle ne soient pas confisquées / monnayées par des opérateurs privés, aux dépens des usagers. Ces évolutions appellent enfin, selon elle, à considérer les trottoirs et, au-delà, ce que certains nomment les « rez-de-ville » comme de nouveaux « communs », stratégiques, dont il faut préserver les fonctions d’intérêt général. S.D.
Le Groenland est-il encore à vendre ?
Authors: Drevet Jean-François
Published: April 2020

Quand a fuité, en août 2019, l’information selon laquelle le président des États-Unis Donald Trump étudiait la possibilité d’acheter le Groenland, les réactions ont oscillé entre offuscation et ironie. Mais ce regain d’attention des États-Unis envers ce territoire de l’Arctique témoigne de l’intérêt croissant pour les régions polaires, en raison notamment de leurs ressources naturelles. Serait-il possible aujourd’hui à un pays, quel qu’il soit, d’acheter un territoire comme le Groenland, qui bénéficie, au sein du royaume du Danemark, d’un large statut d’autonomie mais qui, à ce titre, est aussi associé à l’Union européenne ? Quel est son statut ? Quelles sont ses sources de financement et ses atouts ? Quels sont les intérêts en jeu ? Jean-François Drevet fait le tour du sujet, montrant les différentes problématiques en jeu pour un territoire qui suscite les convoitises de ses voisins proches comme de la Chine.  S.D.
Protection sociale, citoyenneté et mobilisations populaires dans l’Italie de la Première Guerre mondiale (1916-1920)
Authors: Mattera Paolo
Published: April 2020

L’article tente de répondre à la question : quel a été le rôle joué par les masses populaires dans la construction de l’assurance sociale en Italie à l’occasion de la Grande Guerre ? De nombreuses recherches sur la protection sociale tendent à se concentrer sur les décisions les plus importantes avec un point de vue descendant et à privilégier les facteurs institutionnels, politiques ou théoriques. Dans cet article, c’est une perspective ascendante qui est adoptée en s’appuyant sur des sources conservées dans différents fonds d’archives, afin de tenter de comprendre l’état d’esprit de l’opinion publique italienne et son rôle dans les choix politiques et les décisions prises dans le domaine de l’assurance sociale.
Une géographie départementale de la protection sociale : les dépenses d’assistance en France (1880-1914)
Authors: Kitts Antony
Published: April 2020

À sa manière, cette étude tente de réévaluer les politiques sociales des républicains, longtemps considérées comme secondaires au regard de la priorité accordée à la politique scolaire et de confirmer l’idée selon laquelle un processus de territorialisation du social, à l’échelle locale, s’est affirmé entre les années 1880 et 1914. En mettant en perspective ses répercussions financières, encore peu étudiées, la démarche s’insère dans l’histoire du modèle républicain qui a consacré une forme de départementalisation de l’assistance publique et marqué une véritable rupture dans la prise en charge des plus pauvres. Après avoir rappelé la situation de l’assistance et des débats au seuil des années 1880, le texte souligne les disparités spatiales dans l’application de ces lois sociales, dessinant des oppositions entre les départements urbanisés et industrialisés et les départements agricoles et ruraux. L’étude permet également de prendre la mesure de ces nouvelles dépenses et de leurs poids dans les finances départementales. À travers ces évolutions, est ainsi mis en évidence une géographie assistantielle des conseils généraux et de leur réel volontarisme en matière sociale.
Rural Telehealth Team Education for Baccalaureate and Nurse Practitioner Students
Authors: Knight Elizabeth P. , Prettyman Allen V.
Published: April 2020

Background:

Rural areas face health care workforce shortages. Nursing students seeking rural employment require instruction and clinical experience in using telehealth to work in health care teams.

Method:

An innovative telehealth consultation simulation paired nurse practitioner (NP) students with prelicensure baccalaureate nursing degree (BSN) students. The simulation aimed to enhance NP student proficiency and confidence in telehealth consultation skills and to foster professional role development through exposure to telehealth nursing roles for RNs and NPs. On-campus BSN students assumed the role of the RN in a rural clinic and consulted with off-campus NP students using telehealth technology in the care of a standardized patient.

Results:

Participants demonstrated level-appropriate proficiency and reported confidence in telehealth consultation and favorable attitudes toward intraprofessional communication.

Conclusion:

An intraprofessional educational model allowing BSN and NP students to develop telehealth consultation skills successfully addressed a gap in preparing nursing students to meet rural health care workforce needs.

[
J Nurs Educ
. 2020;59(5):274–277.]
Delayed subclavian vein stent perforation causing adjacent arterial pseudoaneurysm formation in a patient with granulomatosis with polyangiitis
Authors: Tan Alexander Sheng Ming , Chua Jasmine Ming Er , Patel Ankur
Published: April 2020

Stenting is necessary when vascular patency is not adequately achieved with angioplasty alone. Common causes of pseudoaneurysms are iatrogenic and traumatic. We describe a case of a perforated left subclavian vein Gianturco stent causing a pseudoaneurysm of the left common carotid artery in a patient with granulomatosis with polyangiitis, detected 8 years after stent insertion.
Multiplier effect and comparative statics in global games of regime change
Authors: Szkup Michal
Published: April 2020

This paper provides a general analysis of comparative statics results in global games. I show that the effect of a change in any parameter of a global game model of regime change can be decomposed into a direct effect, which captures the effect of a change in parameters when agents' beliefs are held constant, and a multiplier effect, which captures the role of adjustments in agents' beliefs. I characterize conditions under which the multiplier effect is strong and relate it to the strength of strategic complementarities and the publicity multiplier emphasized in earlier work. Finally, I use the above insights to identify when comparative statics can be deduced from the model's primitives when they do not depend on the information structure and when they coincide with predictions of the complete information model.
Network structure and naive sequential learning
Authors: Dasaratha Krishna , He Kevin
Published: April 2020

We study a sequential‐learning model featuring a network of naive agents with Gaussian information structures. Agents apply a heuristic rule to aggregate predecessors' actions. They weigh these actions according the strengths of their social connections to different predecessors. We show this rule arises endogenously when agents wrongly believe others act solely on private information and thus neglect redundancies among observations. We provide a simple linear formula expressing agents' actions in terms of network paths and use this formula to characterize the set of networks where naive agents eventually learn correctly. This characterization implies that, on all networks where later agents observe more than one neighbor, there exist disproportionately influential early agents who can cause herding on incorrect actions. Going beyond existing social‐learning results, we compute the probability of such mislearning exactly. This allows us to compare likelihoods of incorrect herding, and hence expected welfare losses, across network structures. The probability of mislearning increases when link densities are higher and when networks are more integrated. In partially segregated networks, divergent early signals can lead to persistent disagreement between groups.
CRACK HEALING IN CEMENTITIOUS MATERIALS INCLUDING TESTS METHODS
Authors: Richardson Alan Elliott , Nagaratnam Brabha , Coventry Kathryn Ann , Brandy Dominic , Amess Leon
Published: April 2020

If concrete is crack free, deleterious substances can be avoided entering the body of the material, that may corrode the rebar or encourage freeze/thaw damage. This paper examines a self healing system of cementitious materials.

Microbial induced calcite precipitation was used to heal cracks in concrete with calcite using bacillus bacteria in alkaline conditions to generate a calcite filling material.

Self healing of cracked prisms was determined using a water flow and absorption test and the results were expressed to record the healing as a percentage.

The findings of the tests showed that a significant degree of self healing had taken place after 56 days after inducing a crack to the concrete prisms and the water flow test was appropriate to determine the degree of self healing taking place.

Limitations of this process are such that the process requires a biological laboratory to create the spore impregnated aggregate. Once the aggregate is prepared, the batching process is essentially the same as any normal concrete.

A practical use of this system could be developed using cover panels of self healing material to act as permanent formwork, thus placing the healing ingredients where they are needed at a minimum cost. The system has huge potential for the creation of a self repairing sustainable infrastructure.
Distribution, Period of Gravidity, and Host Identification for the Narrow Pigtoe Mussel
Authors: Holcomb Kathryn M. , Holcomb Jordan M. , Pursifull Sandra C. , Knight John R.
Published: April 2020

The narrow pigtoe Fusconaia escambia is a freshwater mussel found only in the Escambia and Yellow river basins in northwest Florida and southern Alabama. The U.S. Endangered Species Act lists it as threatened. Like other freshwater mussels (Unionidae), its life cycle involves a larval stage (i.e., glochidial) in which most species are obligate parasites on the gills or fins of fishes. Knowledge of life history, population demographics, population genetics, and threats for the narrow pigtoe is lacking throughout its range, which impedes conservation of this species. Therefore, our objectives were to 1) compare historical and current distribution data using a conservation status assessment map, 2) determine period of gravidity, and 3) identify fish hosts. We used a conservation status assessment map to examine spatial and temporal changes in narrow pigtoe distribution and the possibility that the species has been extirpated from a subbasin (i.e., Hydrologic Unit Code level 10 watershed boundary; U.S. Geological Survey National Hydrography Dataset). We determined period of gravidity for the narrow pigtoe by examining the gills of mussels in the field, and considered peak gravidity to be the month in which we encountered the greatest number of gravid females. We determined fish hosts by infecting individuals of 18 fish species with glochidia in a laboratory setting. Overall, the narrow pigtoe appears to be maintaining stable populations in Florida, but researchers have conducted too few surveys in Alabama subbasins for us to fully assess its status throughout its range. Peak months of gravidity were May–July, with the greatest percentage of gravid females observed in May, although we observed them as early as 9 March and as late as 25 October. We identified nine fish species from five genera as hosts for narrow pigtoe, with Blacktail Shiner Cyprinella venusta and Weed Shiner Notropis texanus consistently producing the greatest number of viable juvenile mussels. Host and gravidity findings from this study will be useful if propagation efforts become necessary for conservation of the narrow pigtoe.
Quelques pièces pour la manœuvre des voiles découvertes sur l’épave de la Madrague de Giens (Hyères, Var, 70‑45 av. J.-C.)
Authors: Carre Marie-Brigitte
Published: April 2020

Cet article présente quelques-unes des pièces de gréement trouvées sur l’épave de la Madrague de Giens (Hyères, Var, 70‑45 av. J.-C.) durant les campagnes de fouille 1976 à 1982 : poulies, moques, manœuvres de voile, replacées dans le contexte de l’épave et dans celui plus général des embarcations antiques. On tentera d’identifier leur fonction par comparaison avec les agrès utilisés traditionnellement dans la marine à voile moderne.
El pecio de Binissafúller y los barcos en la cultura ibérica
Authors: de Juan Carlos
Published: April 2020

En 2012, Patrice Pomey sugirió por primera vez la existencia de una tradición de construcción naval con origen en la costa mediterránea de la Península Ibérica de influencia fenicio-púnica, tras su estudio comparado de los pecios de Golo, Mazarron 1 y 2 y Binissafúller. Ello permitió una mirada a la cultura de los íberos desde una vertiente náutica y arqueológica nunca antes realizada.Presentamos una síntesis de resultados de las campañas de excavación en el pecio de Binissafúller, perteneciente a la familia arquitectónica ibérica de influencia fenicio-púnica, junto con la descripción de algunos elementos arquitectónicos inéditos de los pecios de Mazarrón que refuerzan los argumentos de Pomey. Por último, analizamos con una visión diacrónica la cultura de los íberos y la posible pervivencia de su construcción naval hasta época augustea.
The Bubble Screen
Authors: Thierry Delaunay
Published: April 2020

The objective of the project is the protection of the marine mammals. Marine mammals are species protected by several international conventions, able to perceive the soundand therefore vulnerable to acoustic waves generated by maritime works (break-in hammer, dredging and mining). Underwater noise pollution can cause cetaceans deafness that deprive of all landmarks and can even be lethal. The bubble screen device focus attention because it allows answers to many problems in terms of acoustic impact in the marine environment especially for petroleum research companies, marine renewable energy companies and all off offshore builders.

The bubble screen allows to significantly lower the marine acoustics level around noisy activities. The results of acoustic measurements demonstrate its efficiency, especially on the dangerous frequency range for marine mammals (100 Hz to 1 000 Hz). The device provides acoustic gain from -15 dB to -25 dB on peak noise levels (P2P).

Another way to understand the performance: an acoustic attenuation of -25 dB corresponds to the protection offered by a construction earmuff.
Identifying Production Enhancement Opportunities by Black Oil Foamer Through Slug Flow Modeling
Authors: Jain Amit Satish , Grutters Mark
Published: April 2020

Ageing offshore oilfields with increasing water cuts can suffer from severe slugging and liquid hold-up in subsea flowlines. Excessive liquid loading in flowline and riser sections results in unstable processing condition on the topside; potentially leading to off-spec crude oil and produced water and in extreme cases to production deferment due to level alarm and trips in production separators. Recently, a novel black oil foamer (BOF) application in the GOM was able to mitigate slugging in a deepwater subsea tieback. The oil based foamer is designed to transition the flow regime from slugging to dispersed flow, allowing gas to sweep liquid to the surface. This paper will describe how steady state multiphase modeling was used to verify if foamer application can result in a reduction of liquid hold up and, hence, production improvement. Additionally, the modeling results will be compared to the recent field trial.

Multiphase flow modeling has been performed for fluids of 23-37 API with a GOR of 400-4,000 scf/bbl with a flowline water cut between 16% and 50%. The fluid data were incorporated in the model with the pipeline geometry and topography, or suitable approximations when data was unavailable. The simulation results provided insight into the flow regime for various production scenarios, and thus, suitability of the oil based foamer technology.

The simulation results showed that the riser switches between slug flow and bubble flow regimes. The mechanism of oil based foamer technology for slugging elimination is a transition from slug flow to annular dispersed flow. Fluid flow models shows good match with slugging seen in field without foamer. Additionally, fluid property was adjusted to incorporate foamer effect on lowered liquid density. This case mimics application of oil based foamer and results in no slugging regime for GOM case, hence improved production rate.

This novel use of multiphase modeling for foamer applications will allow to more accurately identify opportunities for oil based foamer applications, and eventually be able to predict the effect of foamer on system slugging and production enhancement.
Frequency Modulated Continuous Wave Analysis of Dynamic Load Deformation in Geomaterials
Authors: Blanche Jamie , Buckman Jim , Lewis Helen , Flynn David , Couples Gary
Published: April 2020

This research advances the use of microwave radar to assess geomaterial properties by the novel application of frequency modulated continuous wave (FMCW) radar to uniaxially loaded sandstones in the laboratory. Here contrasts in reflection coefficient are interpreted to represent microfracture formation and cross-linking under compressive loading prior to through-going sample failure. The Darney and Red St. Bees sandstones are characterized via optical microscope, X-ray radiography and tomography and by SEM methods and are tested for FMCW response under uniaxial compressive loads, with results showing that FMCW interrogation in the K-band is highly sensitive to the progression of bulk axial shortening and material bulk composition. The results reported here present an external, non-contact radio-frequency sensing modality using microwave radar to evaluate the samples as they are deformed. These samples are sandstones chosen for their distinct petrophysical properties and their significant differences in textural heterogeneity and anisotropy. This novel sensing application yields repeatable and consistent results, which are currently verified for four laboratory-deformed sandstone samples, where characteristic spikes in reflection coefficient, Γ, are observed. These spikes, which have not been observed in any other sensing modality, and occurring approximately 20 seconds prior to macroscopic yield, were observed in all samples tested. This research offers new insights into the evolution of deformation and failure in a porous geomaterial, here sandstone, and represents a departure from the current practices of post failure analysis. The effects of these new measurands (and how they change as a function of load) can be used to recognize more clearly the step-wise evolution of the sample progression to bulk failure and potentially be developed to provide a precursor warning of imminent sample failure. By increasing understanding of the damage development this can help refine the associated geomechanical theory. Better theory underpinning better calculations and simulations of a geomechanical reservoir issue can be critical in managing key seal and trap properties of a reservoir, enabling the operator to make improved operational decisions, increasing field productivity and production efficiency.
Digital Transformation as a Tool for FPSO Project Acceleration
Authors: Affonso Italo Dourado , Santos Marcelo Brandão dos , Aragão Rodrigo Rodrigues , Vieira Pedro Fonseca , Diniz Filipe Castello , Rodrigues Breno Augusto , Queiroz Jackson Luan
Published: April 2020

Even though digital innovation is currently a priority for companies worldwide, very few have a structured process designed to collect ideas and transform them into successful innovation projects. Most traditional companies are familiar with creating processes to standardize better practices. However, these processes can make them more resistant to change and kill innovation in their early stages. A second factor that can take its toll on innovation is the predictive, risk–averse approach of traditional project management, which demands a well–defined scope, fixed expectations on results, with inflexible deadlines or standard KPIs.

Another common mistake when starting to implement digital transformation projects is focusing exclusively on technologies. Probably the most significant challenge concerning digital transformation is changing people's mindset to understanding the potential of digital technologies and seek opportunities within their work. The oil and gas industry traditionally focus its innovation effort on R&D. Digital innovation, however, is dispersed and should occur in all sectors of the organization; thus, workforce engagement is essential.

Engineering has excellent opportunities since most processes are still document-centric as opposed to data-centric. For example, schedule and design progress are entirely based on the publishing and approval of documents. Design team member's performance is usually measured by elaborating and reviewing documents. The most significant part of design handover is comprised of documents, and several KPIs are evaluated based on documentation. Redesigning these processes to a data–centric approach, in which everything revolves around databases, attributes, and data models, can increase quality and data consistency as well as reducing design cost and time.
Unmanned / Minimally Manned Floating Deepwater Installations: Design and Safety Considerations
Authors: Patel Harish , Kalghatgi Sameer , Feijo Luiz , Scott Rick
Published: April 2020

The latest focus on floating offshore developments is to minimize or remove the human presence onboard by utilizing remote operations. This may reduce personnel exposure and potentially overall costs by using new technologies. Existing codes or regulations are not tailored to address unmanned (UM) or minimally manned (MM) floating installations. Such floating facilities are remotely operated from a nearby facility or a control center located onshore. Offshore facilities remotely operated require real time monitoring, control automation, and maintenance procedures incorporating remote diagnostics and simulations, with minimal human intervention. This concept brings into focus the design of the remote-control center, the communication infrastructure, smart functionalities, digital twins and simulation technologies. In order to achieve the objectives of an UM or MM facility, hull and machinery inspections onboard the facility are expected to be minimized, and design features adopted for remote inspection using new technologies. Enhancing the fatigue life of the hull structure and reliability of critical machinery are fundamental to this concept.

This paper proposes guidance to develop and manage an UM or MM facility through lifecycle activities of design, construction, integration, testing, operation, monitoring, inspection and maintenance in comparison with conventional facilities. The adopted approach identifies risk related to the concept and proposes measures to help develop appropriate design and safety requirements under a lifecycle perspective. The existing codes, standards and class society rules contain applicable requirements for floating facilities related to design, operations and maintenance. The study is based on the review of existing rules and regulations including associated gap analysis. The study concludes that existing structural rules may be applied as a base requirement to address structural integrity, inspection and maintenance risk. From machinery perspective, new technologies will need to be implemented to address monitoring, control, inspection and maintenance issues. The paradigm shift will be in designing the facility to move from a traditional maintenance plan to a Condition-Based Maintenance (CBM) requiring human intervention on a minimal need-basis.

This paper also addresses the design and safety considerations based on risks, new technology qualification (TQ) and human factors for continued operations, since the limited or temporary crew will be required to perform multidisciplinary activities, and habitability design should assist and augment onboard crew ability.
Machine Learning-Enabled Digital Decision Assistant for Remote Operations
Authors: Mazzi Vitor Alves da Cruz , Dumlao Vincent Carl Quibranza , Mourthé Adriano Cabral Linhares , Elshahawi Hani , Kim Igor , Lumens Paul
Published: April 2020

As digitalization continues to transform the Oil and Gas industry, remote monitoring and surveillance is fast becoming a strategic focus area within many organizations. Data virtualization, visualization, and workflow orchestration are critical functions within this area. Major challenges for digitalization are how to make the best use of the combination of structured and unstructured data, which are often disconnected, as well as how to orchestrate the workflow for minimum friction and maximum efficiency.

This paper describes the successful development and implementation of a Digital Decision Assistant (DDA), a digital environment that integrates data ingestion from various sources, multiple micro-workflows, and bots that use machine learning and natural language processing to execute tasks and make captured knowledge available within and across teams. The DDA uses real time data ingestion, process automation, machine learning, and natural language processing all integrated into a singular adaptive platform which empowers end users by making relevant data available and enabling predictive analytics. Correlating time series data with condition-based monitoring alerts, and user instructions, comments, and tags enriches the data and provides necessary context. Search and workflow functions further extend the platform as both a knowledge repository as well as an orchestrator to outside applications and analytical tools. The platform also includes automated functionalities for; event detection, notifications, alarm management, exception-based surveillance, data preparation, linkage to other applications (via API's), key performance indicator (KPI) generation, and reporting.

The DDA suite provides an extensible and scalable remote monitoring and control system that can incorporate contextual information. The use of data virtualization, automation, and decision enabling tools within an integrated platform allow the organization to improve data virtualization, visualization, and workflow orchestration across a wide spectrum of real time applications, as well as enrich datasets for future digitalization initiatives.