bluuebunny/crossref_metadata_2025_split huggingface dataset:
Eco-hydrology and the effects on the national economy: case of the eastern region of Abakaliki Anticlinorium, Southeastern Nigeria
Authors: Ukpai Stephen Nwoba , Ezeh Hilary Nwogboduwhu , Effam Solomon Chukwuedum 
Published: February 2020

AbstractThe area was mineralized, yet it is an agricultural settlement. Histories of water hardness and local migration of connate (saline) water exist across the region. This study investigated effects of these geogenic circumstances on the economy of the region and Nigeria. Geophysical and geochemical analyses were carried out for delineation of hydrological structures relevant to groundwater movement and pollution status, respectively. Results revealed silty–sandy shale sandwiched between 60 and 100 Ω-m at the fourth geoelectric layer. This layer marks depths to water table from 7.0 to 12.0 m and formed aquitard as medium of regional stance for groundwater percolation. The aquitards confined localized resistivity anomalies of ≤ 60 Ω-m and was interpreted as various aquifers. Isolated peaks of hydraulic head up to 85 m around north-western and south-eastern ends of NW–SE-trending local water divide indicated areas of water table crops where conjunctive hydrological interaction exists between surface water and groundwater resources; each flushes dissolved elements from the calcareous sediments into the water resources. Consequently, configurations of pH, total dissolved solutes (TDS), electrical conductivity (EC) and total hardness ranged as: 6.97–7.96, 20–1399 mg/l, 30–2100 μs/cm and 8–160 mg/l, respectively. Localized concentrations of calcium, sodium, bicarbonate, sulphate, chloride, iron, manganese, zinc, lead, chromium and cobalt in mg/l ranged to pollution or alert levels as follows: 38–590, 5–89, 10–126, 30–460, 6–128, 0.01–1.74, 0.1–0.41, 0.001–0.13, 0/01–1.98, 0.011–0.56 and 0.05–0.22, respectively. The water is therefore hard and hence supports encrustations of fittings for water supplies. Consequently, screens’ slot sizes were clogged, resulting in incessant boreholes failures in the region. Heavy metals are polluting from identifiable loading sources, possibly, due to the proximity of associated lodes. These pollution(s) caused the exceedance of TDS (as reflected in EC) above the saline borderline and hence the salinity and sodium hazards that hampered crop growth, mainly cereal foods. It also endangered biodiversity of adjoining downstream regions.
Enhancing the performance of xanthan gum in water-based mud systems using an environmentally friendly biopolymer
Authors: Akpan Emmanuel U. , Enyi Godpower C. , Nasr Ghasem G. 
Published: February 2020

AbstractXanthan gum is commonly used in drilling fluids to provide viscosity, solid suspension, and fluid-loss control. However, it is sensitive to high temperatures and not tolerant of field contaminants. This paper presents an experimental study on the effects of an eco-friendly biopolymer (diutan gum) on xanthan gum (XC) in a water-based bentonite mud. Laboratory experiments were carried out for different compositions of the biopolymers in water-based bentonite muds formulated without salt and in water-based bentonite muds containing sodium chloride (NaCl). The rheological properties of the water-based bentonite muds formulated with XC (2 Ibm) and those of the water-based bentonite muds prepared using XC (1Ibm) and diutan gum (1Ibm) were measured using Model 1100 viscometer after aging at 25 °C, 100 °C, and 120 °C for 16 h. The API fluid loss and filter cake of the mud formulations were measured using HTHP filter press. The properties of the water-based bentonite muds containing only XC were compared with those of the water-based bentonite muds containing XC and diutan gum. Presented results show that combining diutan gum and xanthan gum in a ratio of 1:1 in a water-based bentonite mud enhances its performance with respect to fluid properties—apparent viscosity, gel strength, yield points, YP/PV ratio, LSRV,n, andK. The fluid formulations also showed favorable mud cake building characteristics. Experimental data also indicate a 16%, 19%, and 34% reduction in API fluid loss values for the water-based benitoite muds containing XC in the presence of diutan gum after aging at 25 °C, 100 °C, and 120 °C for 16 h, respectively. Experimental results also show that the water-based benitoite mud containing XC and diutan gum would cause less formation damage and was tolerant of contamination with a monovalent cation (Na+). The synergy of xanthan gum and diutan gum can, therefore, improve the performance of water-based drilling fluids.
ContextNet: representation and exploration for painting classification and retrieval in context
Authors: Garcia Noa , Renoust Benjamin , Nakashima Yuta 
Published: February 2020

AbstractIn automatic art analysis, models that besides the visual elements of an artwork represent the relationships between the different artistic attributes could be very informative. Those kinds of relationships, however, usually appear in a very subtle way, being extremely difficult to detect with standard convolutional neural networks. In this work, we propose to capture contextual artistic information from fine-art paintings with a specific ContextNet network. As context can be obtained from multiple sources, we explore two modalities of ContextNets: one based on multitask learning and another one based on knowledge graphs. Once the contextual information is obtained, we use it to enhance visual representations computed with a neural network. In this way, we are able to (1) capture information about the content and the style with the visual representations and (2) encode relationships between different artistic attributes with the ContextNet. We evaluate our models on both painting classification and retrieval, and by visualising the resulting embeddings on a knowledge graph, we can confirm that our models represent specific stylistic aspects present in the data.
Lecture Capture Policies: A Survey of British Universities
Authors: Ibrahim Yasmin , Howarth Anita , Stone Ian 
Published: February 2020

AbstractThe integration of digital and convergent technologies into the classroom poses policy level challenges for universities, as these constitute a wider process of digitalization and marketization of the higher education institutions (HEIs) ranging from open access publishing to augmenting pedagogy through learning platforms. Digital technologies not only augment teaching and learning, they present HEIs with a multitude of challenges from copyright of third-party materials to performance rights. This paper surveyed lecture capture policies in 149 British universities in 2015–2016. As mobile and capture technologies become part of the classroom and extend their construction beyond the physical realms, this paper assesses the policy challenges that have emerged with the incorporation of lecture capture technologies into HEIs. Lecture capture is part of the ‘digitalization’ of the HEI sector, illuminating both the investments into digital modes of delivery and dissemination and in tandem the numerous challenges (structural, pedagogic, legal and ethical) that face the sector today through the increasing incorporation of technologies into everyday teaching practices, policy and delivery.
Camera calibration and orientation for PCB jet printing inspection
Authors: Heinemann David , Dutz Silvio , Knabner Steffen , Haueisen Jens , Baumgarten Daniel 
Published: February 2020

AbstractTo assess the quality of printed solder joints in the jet printing of printed circuit boards, a calibrated camera is used to reconstruct the solder volume via photogrammetry as a specific task of computer vision. This requires a procedure for calibration and orientation determination due to restrictions within the image acquisition process. We herein consider a novel application area called an ultra-close range normal case photogrammetry, where a camera acquires small objects at small operating distances and fields of depth. Because the camera cannot rotate or translate in the z-direction, we propose and evaluate four calibration procedures in terms of their capability in a normal case calibration within the ultra-close range. To set up an optimal calibration pipeline, a three-dimensional (3D) calibration field is used for single and multi-image calibrations. To enhance the accuracy and to simplify the assignment of 3D coordinates to the detected markers, we propose a geometry-based estimation of the lens model to undistort the image points. Close-range applications utilize spacer rings and extension tubes to enlarge the magnification and reduce the operating distance. We also examine the influence of these extensions on the intrinsics of the camera and the reconstruction result. Additionally, we demonstrate the dependence of the accuracy on the lens model in terms of radial and tangential distortions and the number of distortion coefficients regarding the reprojection error $$\epsilon _{repro}$$

ϵ

repro

. Finally, we provide recommendations for a lens configuration for ultra-close range normal case calibrations and measurements, based on the calibration and reconstruction results, which are evaluated by the 2D reprojection error $$\epsilon _{repro}$$

ϵ

repro

and the 3D reconstruction error $$\epsilon _{recon}$$

ϵ

recon

obtained from a second independent calibration field.
Authoritarian International Law?
Authors: Ginsburg Tom 
Published: February 2020

AbstractInternational law, though formally neutral among regime types, has mainly been a product of liberal democracies since World War II. In light of recent challenges to the liberal international order, this Article asks, what would international law look like in an increasingly authoritarian world? As compared with democratic countries, authoritarians emphasize looser cooperation, negotiated settlements, and rules that reinforce regime survival. This raises the possibility of authoritarian international law, designed to extend authoritarian rule across time and space.
Recovering the Logic of Double Effect for Business: Intentions, Proportionality, and Impermissible Harms
Authors: Monge Rosemarie , Hsieh Nien-hê 
Published: February 2020

ABSTRACTBusiness actors often act in ways that may harm other parties. While the law aims to restrict harmful behavior and to provide remedies, legal systems do not anticipate all contingencies and legal regulations are not always well-enforced. This article argues that the logic of double effect (LDE), which has been developed and deployed in other areas of practical ethics, can be useful in helping business actors decide whether or not to pursue potentially harmful activities in commonplace business activity. The article illustrates how LDE helps to explain the exploitative nature of payday lending, the distinction between permissible and impermissible forms of market competition, and the potential wrong of imposing risk of harm on others. The article also addresses foundational debates about LDE itself. We offer the article as an illustration of the sort of “midlevel” theorizing that can address directly the needs of practitioners.
Factors Influencing the Prioritization of Injured Patients for Transfer to a Burn or Trauma Center Following a Mass Casualty Event
Authors: Lancet Elizabeth A. , Zhang Wei Wei , Roblin Patricia , Arquilla Bonnie , Zeig-Owens Rachel , Asaeda Glenn , Kaufman Brad , Alexandrou Nikolaos A. , Gallagher James J. , Cooper Michael L. , Styles Timothy , Prezant David J. , Quinn Celia 
Published: February 2020

ABSTRACTObjectives:In New York City, a multi-disciplinary Mass Casualty Consultation team is proposed to support prioritization of patients for coordinated inter-facility transfer after a large-scale mass casualty event. This study examines factors that influence consultation team prioritization decisions.Methods:As part of a multi-hospital functional exercise, 2 teams prioritized the same set of 69 patient profiles. Prioritization decisions were compared between teams. Agreement between teams was assessed based on patient profile demographics and injury severity. An investigator interviewed team leaders to determine reasons for discordant transfer decisions.Results:The 2 teams differed significantly in the total number of transfers recommended (49 vs 36; P = 0.003). However, there was substantial agreement when recommending transfer to burn centers, with 85.5% agreement and inter-rater reliability of 0.67 (confidence interval: 0.49–0.85). There was better agreement for patients with a higher acuity of injuries. Based on interviews, the most common reason for discordance was insider knowledge of the local community hospital and its capabilities.Conclusions:A multi-disciplinary Mass Casualty Consultation team was able to rapidly prioritize patients for coordinated secondary transfer using limited clinical information. Training for consultation teams should emphasize guidelines for transfer based on existing services at sending and receiving hospitals, as knowledge of local community hospital capabilities influence physician decision-making.
A cross-validated three-dimensional model of an englacial and subglacial drainage system in a High-Arctic glacier
Authors: Hansen Lena U. , Piotrowski Jan A. , Benn Douglas I. , Sevestre Heidi 
Published: February 2020

AbstractRecent speleological surveys of meltwater drainage systems in cold and polythermal glaciers have documented dynamic englacial and in some cases subglacial conduits formed by the ‘cut-and-closure’ mechanism. Investigations of the spatial distribution of such conduits often require a combination of different methods. Here, we studied the englacial drainage system in the cold glacier Longyearbreen, Svalbard by combining speleological exploration of a 478 m long meltwater conduit with a high-resolution ground penetrating radar (GPR) survey with two different centre-frequencies (25 and 100 MHz). The results yielded a 3-D documentation of the present englacial drainage system. The study shows that the overall form of englacial conduits can be detected from velocity−depth converted GPR data, and that the 3-D model can facilitate a method to pinpoint the reflections in a radargram corresponding with the englacial drainage system, although fine detail cannot be resolved. Visible reflections approximately parallel to the mapped englacial water drainage system likely result from sediment incorporated in the ice or from abandoned parts of the englacial drainage system.
Abomasally infused SFA with varying chain length differently affect milk production and composition and alter hepatic and mammary gene expression in lactating cows
Authors: Rico D. E. , Parales J. E. , Corl B. A. , Lengi A. , Chouinard P. Y. , Gervais R. 
Published: February 2020

AbstractThe aim of the present study was to compare the effects of post-ruminally infused fat supplements, varying in fatty acid (FA) chain length, on animal performance, metabolism and milk FA. Eleven multiparous Holstein dairy cows were used in a replicated incomplete 3 × 3 Latin square design with 7-d periods, separated by 7-d washouts. Treatments were administered as abomasal infusions of enrichments providing 280 g/d of FA: (1) palmitic acid (98·4 % 16 : 0; PA), (2) caprylic and capric acids (56·2 % 8 : 0, 43·8 % 10 : 0; medium-chain TAG (MCT)) and (3) stearic acid (99·0 % 18 : 0; SA). Relative to PA, SA decreased the efficiency of fat-corrected milk production, which was associated with a tendency for higher DM intake and lower FA absorption with SA, whereas MCT was not different from PA for these variables. Milk fat concentration and yield were increased by PA relative to SA, but only fat yield tended to be greater relative to MCT. Relative to PA, MCT increased milk fat concentration of FA < 16 C, whereas SA increased FA > 16 C. Expression of mammary stearoyl-coA desaturase 1 was lower with SA than with PA. Relative to PA, liver expression of adenosine monophosphate-activated protein kinase-1 and pyruvate kinase was increased with MCT, whereas expression of these genes tended to be increased by SA. The mechanism of increased fat secretion with PA does not seem to be related to a modulation of the expression of lipogenesis-related genes, but rather to increased substrate availability as reflected by milk FA profile.
The impact of international law on natural resource governance in Greenland
Authors: Johnstone Rachael Lorna 
Published: February 2020

AbstractThe paper demonstrates how the evolution of international law on colonial and indigenous peoples, in particular evolving rights to sovereignty over natural resources, shaped the changing relationship between Greenland and the rest of the Danish Realm. Greenland today is in a unique position in international law, enjoying an extremely high degree of self-government. This paper explores the history, current status and future of Greenland through the lens of international law, to show how international obligations both colour its relationship with the Kingdom of Denmark and influence its approaches to resource development internally. It considers the invisibility of the Inuit population in the 1933Eastern Greenlandcase that secured Danish sovereignty over the entire territory. It then turns to Denmark’s registration of Greenland as a non-self-governing territory (colony) in 1946 before Greenland’s-purported decolonisation in 1953 and the deficiencies of that process. In the second part of the 20thcentury, Denmark began to recognise the Greenland Inuit as an indigenous people before a gradual shift towards recognition of the Greenlanders as a people in international law, entitled to self-determination, including the right to permanent sovereignty over their natural resources. This peaked with the Self-Government Act of 2009. The paper will then go on to assess competing interpretations of the Self-Government Act of 2009 according to which the Greenland self-government is the relevant decision-making body for an increasing number of fields of competence including, since 1 January 2010, the governance of extractive industries. Some, including members of the Greenland self-government, argue that the Self-Government Act constitutes full implementation of the UN Declaration on the Rights of Indigenous Peoples (UNDRIP 2007), but this view is not universally shared. The paper also considers the status and rights of two Greenland minorities: the North Greenlanders (Inughuit) and the East Greenlanders, each of whom has distinct histories, experiences of colonisation, dialects (or languages) and cultural traditions. While the Kingdom of Denmark accepts the existence of only one indigenous people, namely, the Inuit of Greenland, this view is increasingly being challenged in international fora, including the UN human rights treaty bodies, as the two minorities are in some cases considered distinct indigenous peoples. Their current position in Greenland as well as in a future fully independent Greenland is examined, and the rights that they hold against the Greenland self-government as well as the Kingdom of Denmark explored. Greenland’s domestic regime for governance of non-renewable natural resources (principally mining and hydrocarbons) is briefly analysed and compared with international standards, with a particular emphasis on public participation. The paper assesses the extent to which it complies with the standards in key international instruments.
Reflections on the role of due diligence in clarifying State discretionary powers in developing Arctic natural resources
Authors: Bankes Nigel 
Published: February 2020

AbstractThis article argues that the concept of diligence provides a useful role in clarifying (and perhaps narrowing) the discretionary powers of the State with respect to the development of natural resources. The claim has two branches. First, the concept of due diligence plays an important role in bridging the normative gap between the harms caused by private actors and the international law of State responsibility. It is the vehicle by which States can be made to assume responsibility for private developments within their jurisdiction and control that cause harm to other States. Second, the concept of due diligence plays an important role (a “generative role”) in teasing out the detailed logical implications of more abstract primary norms such as the duty of prevention. These derivative duties include the duties to make a preliminary assessment of whether the proposed activity may cause a risk of significant transboundary harm: to conduct an environmental impact assessment (EIA) if there is a risk of significant harm and, if the EIA confirms that risk, to notify and consult with respect to possible measures to prevent or mitigate that risk. The article demonstrates both of these claims through an examination of the jurisprudence of the International Court of Justice, the International Tribunal for the Law of the Sea and arbitral awards. Finally, the article applies these claims in the context of possible resource developments in Alaska, British Columbia and Yukon that may have transboundary implications.
Predictors of affect following discharge from partial hospitalization: a two-week ecological momentary assessment study
Authors: Forgeard Marie , Beard Courtney , Shayani Danielle , Silverman Alexandra L. , Tsukayama Eli , Björgvinsson Thröstur 
Published: February 2020

AbstractBackgroundLittle is known about the everyday experiences of individuals transitioning from acute to outpatient psychiatric care, an important period of risk for mood symptom relapse. This study used ecological momentary assessment (EMA) to examine whether specific daily experiences were related to momentary affective states following discharge from a partial hospitalization program (PHP).MethodsA sample of 114 adults (Mage = 36 years old, 52% female, 83% White) completed four brief EMA surveys every day for 2 weeks assessing intensity/type of stressful events and social contact, as well as positive/negative affect (PA/NA). Half of participants reported therapeutic skills use.ResultsStress severity ratings prospectively predicted increased NA. NA predicted spending less time with close relationships. However, interacting with close relationships predicted increased positive affect (PA). Finally, PA predicted spending time with more people. The use of two skills (behavioral activation and interpersonal effectiveness) was concurrently, but not prospectively, associated with improved affect.ConclusionsExamining daily experiences of individuals discharging from partial hospitalization provides important information about factors that may influence affective states during the transition from acute to outpatient care. Findings from this study can be used to help prepare patients for discharge and develop interventions for the post-acute period.
Aging and Sexual Health: A Cross-Sectional Survey of Patients in a Canadian Urban Academic Family Health Team
Authors: Lurie Erin , Nathwani Meera , Slater Morgan , Pascoal Erica , Chadwick Sarah , Cmorejova Jana , Guiang Charlie 
Published: February 2020

ABSTRACTPrimary care physicians are in a position to recognize sexuality as a core component of health. Data examining the sexual behaviours of Canadians over the age of 50 and the role of primary care in this domain is lacking. A cross-sectional survey was administered to patients over the age of 50, which assessed the importance of sexual activity, problems, and preferences in discussing sexual health with their primary care providers. A total of 39 per cent of patients indicated ongoing sexual activity and 52% of male participants reported current sexual activity compared with 25 per cent of females (p < 0.01). More males reported sexual activity as important than did females (69% vs. 45%, p < 0.01). Participants identifying sexual health concerns discussed physical dysfunctions more than emotional, social, or global health concerns (p < 0.01). More male participants discussed sexual health concerns with their family physician than did females (p < 0.01). The results of our study indicate that many individuals over the age of 50 continue to be sexually active, and that physical and non-physical concerns directly impact participation in sexual activity.