bluuebunny/crossref_metadata_2025_split huggingface dataset:
The worldwide physical height datum project
Authors: Barzaghi Riccardo , De Gaetani Carlo Iapige , Betti Barbara 
Published: August 2020

AbstractThe definition of a common global vertical coordinate system is nowadays one of the key points in Geodesy. With the advent of GNSS, a coherent global height has been made available to users. The ellipsoidal height can be obtained with respect to a given geocentric ellipsoid in a fast and precise way using GNSS techniques. On the other hand, the traditional orthometric height is not coherent at global scale. Spirit levelling allows the estimation of height increments so that orthometric heights of surveyed points can be obtained starting from a benchmark of known orthometric heights. As it is well known, this vertical coordinate refers to the geoid, which is assumed to be coincident to the mean sea level. By means of a tide gauge, the mean sea level is estimated and thus a point of known orthometric height is defined. This assumption, which was acceptable in the past, became obsolete given the level of precision which is now required. Based on the altimetry observation, one can precisely quantify the existing discrepancy between geoid and mean sea level that can amount to 1 ÷ 2 m at global scale. Therefore, different tide gauges provide biased estimates of the geoid, given the discrepancy between this equipotential surface and the mean sea level. Also, in the last years, another vertical coordinate was used, the normal height that was introduced in the context of the Molodensky theory. In this paper, a review of the existing different height systems is given and the relationships among them are revised. Furthermore, an approach for unifying normal height referring to different tide gauges is presented and applied to the Italian test case. Finally, a method for defining a physical height system that is globally coherent is discussed in the context of the definition of the International Height Reference System/Frame, a project supported by the Global Geodetic Observing System of the International Association of Geodesy (IAG). This project was established in 2015 during the XXVI IAG General Assembly in Prague as described in IAG Resolution no. 1 that was presented and adopted there.
Decentralized spectrum learning for radio collision mitigation in ultra-dense IoT networks: LoRaWAN case study and experiments
Authors: Moy Christophe , Besson Lilian , Delbarre Guillaume , Toutain Laurent 
Published: August 2020

AbstractThis paper describes the theoretical principles and experimental results of reinforcement learning algorithms embedded into IoT devices (Internet of Things), in order to tackle the problem of radio collision mitigation in ISM unlicensed bands. Multi-armed bandit (MAB) learning algorithms are used here to improve both the IoT network capability to support the expected massive number of objects and the energetic autonomy of the IoT devices. We first illustrate the efficiency of the proposed approach in a proof-of-concept, based on USRP software radio platforms operating on real radio signals. It shows how collisions with other RF signals are diminished for IoT devices that use MAB learning. Then we describe the first implementation of such algorithms on LoRa devices operating in a real LoRaWAN network at 868 MHz. We named this solution IoTligent. IoTligent does not add neither processing overhead, so it can be run into the IoT devices, nor network overhead, so that it requires no change to LoRaWAN protocol. Real-life experiments done in a real LoRa network show that IoTligent devices’ battery life can be extended by a factor of 2, in the scenarios we faced during our experiment. Finally we submit IoTligent devices to very constrained conditions that are expected in the future with the growing number of IoT devices, by generating an artificial IoT massive radio traffic in anechoic chamber. We show that IoTligent devices can cope with spectrum scarcity that will occur at that time in unlicensed bands.
Placodont remains (Sauropsida, Sauropterygia) from the Triassic of Hungary (Transdanubian Range and Villány Mountains)
Authors: Gere Kinga , Scheyer Torsten M. , Makádi László , Ősi Attila 
Published: August 2020

AbstractNew placodont remains from the Triassic of Hungary are described here. They come from two different tectonic units: the Transdanubian Range Unit representing Alpine type sedimentary basins and the Villány-Bihar Unit that was part of the southern passive margin of the European Plate during the Triassic. The fossils came from four stratigraphic levels with the oldest specimen, a maxilla fragment found in the upper Anisian of Forrás Hill, near Felsőörs (Transdanubian Range). Based on dental morphology, the specimen is referred to here as Paraplacodus broilii. This site is similar in age to the Monte San Giorgio (Switzerland and Italy) locality. A Carnian occurrence of placodonts from this tectonical unit is a dentary fragment and two isolated teeth referred to here as Placochelys placodonta. The youngest specimen from this unit is a placochelyid tooth fragment from the Rhaetian of the Keszthely Mountains (Transdanubian Range). The richest assemblage of new placodont remains is from the Ladinian of the Villány Mountains, southern Hungary. Cranial elements are referred to here as Cyamodus sp. Teeth from this site are similar to that of Cyamodus sp. described from Slovenia, and both assemblages are among the last occurrences of the genus in the European Triassic. The Villány site is considered as a gap locality because of the rarity of Ladinian placodont occurrences in the German-Alpine sedimentary basins.
Effect of Sodium Chloride, Sodium Nitrite and Sodium Nitrate on the Infectivity of Hepatitis E Virus
Authors: Wolff Alexander , Günther Taras , Albert Thiemo , Johne Reimar 
Published: August 2020

AbstractHepatitis E virus (HEV) infection can cause acute and chronic hepatitis in humans. The zoonotic HEV genotype 3, which is highly prevalent in Europe, is mainly transmitted by consumption of raw meat and raw meat products produced from infected pigs or wild boars. High salt concentrations represent an important measure to preserve meat products and to inactivate foodborne pathogens. Here, an HEV preparation in phosphate-buffered saline (PBS) was subjected to different salt concentrations and the remaining infectivity was measured in a cell culture assay. Treatments with up to 20% sodium chloride for 24 h at 23 °C, with and without addition of 0.015% sodium nitrite or 0.03% sodium nitrate, did not lead to virus inactivation as compared to PBS only. Conditions usually applied for short-term and long-term fermented raw sausages were simulated by incubation at 22 °C for up to 6 days and at 16 °C for up to 8 weeks, respectively. Only 2% sodium chloride with 0.015% sodium nitrite showed a weak (< 1 log10), but significant, infectivity reduction after 2 and 4 days as compared to PBS only. Addition of 2% sodium chloride and 0.03% sodium nitrate showed a slight, but not significant, decrease in infectivity after 2 and 8 weeks as compared to PBS only. In conclusion, HEV is highly stable at high salt concentrations and at salt conditions usually applied to preserve raw meat products.
Utilizing a new eco-friendly drilling mud additive generated from wastes to minimize the use of the conventional chemical additives
Authors: Al-Hameedi Abo Taleb T. , Alkinani Husam H. , Alkhamis Mohammed M. , Dunn-Norman Shari 
Published: August 2020

AbstractThe cost of the drilling operation is very high. Drilling fluid presents 15 to 30% of the entire expense of the drilling process. Ordinarily, the major drilling fluids additives are viscosity modifiers, filtration control agents, and partial loss treatments. In this experimental work, full-set measurements under fresh and aged conditions, as well as high-temperature and high-pressure (HTHP) API filtration, were conducted to study the impacts of adding 0.5%, 1.5%, 2.5%, and 3.5% of black sunflower seeds’ shell powder (BSSSP) to spud mud. BSSSP of various grain sizes showed their ability to be invested for viscosity modifying, seepage loss controlling, and partial loss remediation. In addition to BSSSP eminent efficiency to be used as a multifunctional additive, the BSSSP is cheap, locally obtainable in commercial quantities, environmentally friendly additive and easy to grind into various desired grain sizes. Besides its outstanding strength to behave under conditions up to 30 h aged time and under 50 °C (122 °F) temperature, the utilization of powdered waste black sunflower shells in the drilling process and other industrial applications can reduce the effects of food waste on the environment and the personnel safety. To sum it up, experimental findings revealed that BSSSP can be used for multiple applications as a novel fibrous and particulate additive. The results elucidated BSSSP suitability in substituting or at least minimizing some of the traditional chemical materials utilized in the petroleum industry such as salt clay, polymers, and lost circulation materials (LCM).
Sixty-seven years of the Nash program: time for retirement?
Authors: Serrano Roberto 
Published: August 2020

AbstractThe Nash program is an important research agenda initiated in Nash (Econometrica 21:128–140, 1953) in order to bridge the gap between the noncooperative and cooperative counterparts of game theory. The program is thus turning sixty-seven years old, but I will argue it is not ready for retirement, as it is full of energy and one can still propose important directions to be explored. This paper completes and updates previous surveys, and suggests several directions for future research.
Synchronous robotic right hemicolectomy and subtotal gastrectomy
Authors: Carbone Fabio , Pace Ugo , Albino Vittorio , Leongito Maddalena , Delrio Paolo 
Published: August 2020

AbstractAbout 4% of patients with stomach cancer diagnosis have synchronous colorectal cancer and some of these patients may require a synchronous surgical resection. So far, only few minimally invasive series of synchronous resections have been described. We investigated the feasibility and safety of the synchronous robotic resection of the right colon and stomach malignancies, trying to identify a standardised and reproducible technique. It is essential to carefully plan the operation and the trocars positioning to minimise the number of robotic dockings and be able to operate comfortably. Herein, we describe our approach, which is safe and effective in terms of minimal invasiveness and oncological radicality. Robotic surgery could be used with even more advantage in complex multi-organ resections, providing the surgeon with a better vision, a more accurate dissection and longer instruments, to offer the patient all the benefits of a minimal invasive surgery.
Measurement of the air-to-fuel ratio inside a passive pre-chamber of a fired spark-ignition engine
Authors: Wippermann Nicolas , Thiele Olaf , Toedter Olaf , Koch Thomas 
Published: August 2020

AbstractThis paper investigates the local air-to-fuel ratio measurement within the pre-chamber of a spark-ignition engine by determining the absorption of light from hydrocarbons using an infrared sensor. The measurement was performed during fired and motored engine operation points and compared to the more common exhaust lambda measurements. The experiment provided data to compare the mixture preparation in a hot and cold environment of pre-chamber and main combustion chamber. The experiment also gives an indication regarding the possible use of a pre-chamber sensor in a motored engine at higher boost pressures and fuel mass flows, operation points that would overheat the sensor in a fired engine. The work also includes the analysis of the fuel delivery into the pre-chamber of a direct and indirect injection engine. Furthermore, pressure and temperature measurement within the pre-chamber provides information about the critical sensor environment and helps to understand the gas exchange between the two volumes.
Using machine learning to predict links and improve Steiner tree solutions to team formation problems - a cross company study
Authors: Keane Peter , Ghaffar Faisal , Malone David 
Published: August 2020

AbstractThe team formation problem has existed for many years in various guises. One important challenge in the team formation problem is to produce small teams that have a required set of skills. We propose a framework that incorporates machine learning to augment a collaboration graph with latent links between collaborators. This is combined with the solution of Steiner tree problems to form small teams that cover a specified set of tasks. Our framework not only considers the size of the team but also the likelihood that team members are going to collaborate with each other. We demonstrate our results using data from the US Patent office covering two different companies’ inventor networks. The results show that this technique can reduce the size of suggested teams.
Marine Robots for Underwater Surveillance
Authors: Terracciano D.S. , Bazzarello L. , Caiti A. , Costanzi R. , Manzari V. 
Published: August 2020

Abstract
Purpose of Review
The paper reviews the role of marine robots, in particular unmanned vehicles, in underwater surveillance, i.e. the control and monitoring of an area of competence aimed at identifying potential threats in support of homeland defence, antiterrorism, force protection and Explosive Ordnance Disposal (EOD).

Recent Findings
The paper explores separately robotic missions for identification and classification of threats lying on the seabed (e.g. EOD) and anti-intrusion robotic systems. The current main scientific challenge is identified in terms of enhancing autonomy and team/swarm mission capabilities by improving interoperability among robotic vehicles and providing communication networking capabilities, a non-trivial task, giving the severe limitations in bandwidth and latency of acoustic underwater messaging.

Summary
The work is intended to be a critical guide to the recent prolific bibliography on the topic, providing pointers to the main recent advancements in the field, and to give also a set of references in terms of mission and stakeholders’ requirements (port authorities, coastal guards, navies).
Infection to Recovery; COVID-19 in Pakistan and its Implications
Authors: Zia Sadia 
Published: August 2020

AbstractThe New pandemic is hitting all around the world in different manner. The infection rate, prevalence and severity is not patronized in many countries. Pakistan is now attaining the peak in its cases. Around 108,317 confirmed cases are present in Pakistan and 71,127 are currently active cases1. The recovery rate is 32%. The dangerous situation about the infection prevalence is that most of the people either are asymptomatic of having mild symptoms. An estimation release from Primary Health Department of Punjab claims that almost 670,000 cases are asymptomatic in only Lahore city 2. This correspondence is about an infected family of 5 people 3 males and 2 females in Lahore, Pakistan. Who were exposed with virus and one after one got the infection, the two males deceased but rest of family member are recovered.
You have the microbiome you deserve
Authors: Hill Colin 
Published: August 2020

ABSTRACT
The human microbiome is one of the most exciting areas of microbiology. From a starting point of tens of papers annually a couple of decades ago, there are now thousands of papers published every year on the microbiome. Huge strides have been made in terms of defining the individual members of complex human microbiomes from different body sites. The individuality and diversity of the human microbiome almost surpasses our ability to comprehend it. Advances in metagenomics and computational sciences have increased the complexity of the field, while at the same time we have moved from regarding the human microbiome as a benign passenger to a situation where it has been linked to almost every chronic disease, including obesity, cancer and infectious disease. The microbiome tantalizes us with the promise of novel therapeutic molecules and modalities for a range of intractable diseases. And yet, very few microbiome-based therapies have made it to the clinic or the pharmacy and we still cannot really define a healthy microbiome. We are entering the most exciting phase of microbiome research, as we develop effective, evidence-based interventions to preserve and restore human health. But we need rigour and numeracy if we are to realize this vision.
Disparities in the prevalence and risk factors of anaemia among children aged 6–24 months and 25–59 months in Ethiopia
Authors: Gebreegziabher Tafere , Regassa Nigatu , Wakefield Micaela , Pritchett Kelly , Hawk Susan 
Published: August 2020

AbstractDespite global efforts made to address anaemia, the prevalence remains high in most Sub-Saharan African countries. In Ethiopia, anaemia poses a very strong public health concern. The purpose of the present study was to examine the key risk factors related to anaemia among children aged 6–24 months (younger age group) and 25–59 months (older age group). We used the 2016 Ethiopian Demographic and Health Survey data, collected from 11 023 mothers with under five children. Ordered logistic regression modelling was used for assessing risk factors of childhood anaemia. The results suggest that the prevalence of anaemia was 72 % in the younger and 49 % in the older age groups. The risk factors for anaemia in the younger age group were morbidity (odds ratio (OR) 1⋅77; CI 1⋅21, 2⋅60), having no piped water source (OR 1⋅76; CI 1⋅07, 3⋅01) and no toilet facility (OR 1⋅60; CI 1⋅07, 2⋅38). The key risk factors for anaemia in the older age group were no micronutrient intake (OR 1⋅69; CI 1⋅23, 2⋅31), having a young mother (15–24 years old) (OR 1⋅35; CI 0⋅84, 1⋅91) and a non-working mother (OR 1⋅50; CI 1⋅15, 1⋅96). Anaemia also varied by region, place of residence and economic factors. Multiple factors contributed to the high prevalence of anaemia. Given the structural problem that the country has intervention strategies should consider the unique characteristics of regions and rural residences where the prevalence of anaemia is above the national average.
Health effects of a low-inflammatory diet in adults with arthritis: a systematic review and meta-analysis
Authors: Genel Furkan , Kale Michael , Pavlovic Natalie , Flood Victoria M. , Naylor Justine M. , Adie Sam 
Published: August 2020

Abstract
The aim is to systematically assess the health impact of a low-inflammatory diet intervention (full-diet or supplement), compared to usual diet or other dietary interventions, on weight change, inflammatory biomarkers, joint symptoms, and quality of life in adults with osteoarthritis, rheumatoid arthritis or seronegative arthropathy (psoriatic, reactive, ankylosing spondylitis or IBD-related), on outcomes assessed in prospective studies within 6 months of intervention commencement (PROSPERO CRD42019136567). Search of multiple electronic library databases from inception to July 2019, supplemented by grey literature searches, for randomised and prospective trials assessing the above objective. After exclusion of 446 ineligible studies, five randomised and two prospective trials involving 468 participants with either osteoarthritis or rheumatoid arthritis were included. GRADE assessment for all outcomes was very low. Meta-analyses produced the following standardised mean differences (SMD) and 95 % confidence interval (CI) 2–4 months following commencement of the diets favouring the low-inflammatory diet: weight SMD −0⋅45 (CI −0⋅71, −0⋅18); inflammatory biomarkers SMD −2⋅33 (CI −3⋅82, −0⋅84). No significant effects were found for physical function (SMD −0⋅62; CI −1⋅39, 0⋅14), general health (SMD 0⋅89; CI −0⋅39, 2⋅16) and joint pain (SMD −0⋅98; CI −2⋅90, 0⋅93). In most studies, the quality of dietary intervention (dietitian input, use of validated dietary compliance tool) could not be gauged. In conclusion, very low-level evidence suggests that low-inflammatory diets or supplements compared to usual diets are associated with greater weight loss and improvement in inflammatory biomarkers. More high-quality trials are needed to assess the health effects of a low-inflammatory diet more comprehensively and conclusively in arthritic conditions.
Real, but Limited: A Meta-Analytic Assessment of Framing Effects in the Political Domain
Authors: Amsalem Eran , Zoizner Alon 
Published: August 2020

AbstractIn the past three decades, scholars have frequently used the concept of framing effects to assess the competence of citizens' political judgments and how susceptible they are to elite influence. Yet prior framing studies have reached mixed conclusions, and few have provided systematic cumulative evidence. This study evaluates the overall efficacy of different types of framing effects in the political domain by systematically meta-analyzing this large and diverse literature. A combined analysis of 138 experiments reveals that when examined across contexts, framing exerts medium-sized effects on citizens' political attitudes and emotions. However, framing effects on behavior are negligible, and small effects are also found in more realistic studies employing frame competition. These findings suggest that although elites can influence citizens by framing issues, their capacity to do so is constrained. Overall, citizens appear to be more competent than some scholars envision them to be.
Reframing the Past: Justice, Guilt, and Consolidation in East and West Germany after Nazism
Authors: Fulbrook Mary 
Published: August 2020

AbstractOnly a minority of Germans involved in Nazi crimes were prosecuted after the war, and the transnational history of trials is only beginning to be explored. Even less well understood are the ways in which those who were tainted by complicity reframed their personal life stories. Millions had been willing facilitators, witting beneficiaries, or passive (and perhaps unhappily helpless) witnesses of Nazi persecution; many had been actively involved in sustaining Nazi rule; perhaps a quarter of a million had personally killed Jewish civilians, and several million had direct knowledge of genocide. How did these people re-envision their own lives after Nazism? And how did they reinterpret their own former behaviors—their actions and inaction—in light of public confrontations with Nazi crimes and constructions of “perpetrators” in trials? Going beyond well-trodden debates about “overcoming the past,” this paper explores patterns of personal memory among East and West Germans after Nazism.
Stakeholder Orientation and the Cost of Debt: Evidence from State-Level Adoption of Constituency Statutes
Authors: Gao Huasheng , Li Kai , Ma Yujing 
Published: August 2020

AbstractWe examine the causal effect of stakeholder orientation on firms’ cost of debt. Our test exploits the staggered state-level adoption of constituency statutes, which allows directors to consider stakeholders’ interests when making business decisions. We find a significant drop in loan spreads for firms incorporated in states that adopted such statutes relative to firms incorporated elsewhere. We further show that constituency statutes reduce the cost of debt through the channels of mitigating conflicts of interest between residual and fixed claimants and between holders of liquid claims and holders of illiquid claims, limiting legal liability and lowering takeover threats.