bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stress Solutions for an Infinite Plate With Triangular Inlay
Authors: Evan-Iwanowski R. M. 
Published: June 2021

Abstract
The method of solving two-dimensional problems in elasticity by means of the functions of complex variable, essentially developed by É. Goursat (1), and N. I. Muskhelishvili (2-4), has been applied to the following cases: (a) An infinite plate with a rigid triangular inlay under uniform tension at infinity; (b) A concentrated force; and (c) a moment acting on a triangular inlay in an infinite plate. All these problems are second boundary-value problems; i.e., the displacements are prescribed on the boundary. The first boundary-value problem for a triangular opening in an infinite plate was treated by Hu-Nan Chu (7). The mapping function used in this paper is z = ω ( ζ ) = K ( ζ + n ζ 2 ) , K is real, and 0 &lt; n &lt; 1/2 and real, and it maps an exterior of a triangle with rounded corners, Fig. 1, in the z-plane into an exterior of a unit circle in the ζ-plane [for detailed discussion of this mapping refer to (4)].
A Method for Calculating Stress-Concentration Factors
Authors: Hetényi M. , Liu T. D. 
Published: June 2021

Abstract
It is shown in this paper that along the root sections of filleted or notched bars there is a rapid rise in the transmitted shearing forces, and this may be regarded as the principal reason for the occurrence of stress peaks under these circumstances. By making a few assumptions concerning the distribution of these shear loads, the stress-concentration factors can be calculated with satisfactory accuracy for such cases which have been heretofore analytically intractable.
Three-Dimensional and Shell-Theory Analysis of Axially Symmetric Motions of Cylinders
Authors: Herrmann George , Mirsky I. 
Published: June 2021

Abstract
The frequency (or phase velocity) of axially symmetric free vibrations in an elastic, isotropic, circular cylinder of medium thickness is studied on the basis of the three-dimensional linear theory of elasticity and several different shell theories. To be in good agreement with the solution of the three-dimensional equations for short wave lengths, an approximate theory has to include the influence of rotatory inertia and transverse shear deformation, for example, in a manner similar to Mindlin’s plate theory. A shell theory of this (Timoshenko) type is deduced from the three-dimensional elasticity theory. From a comparison of phase velocities it appears that, to a good approximation, membrane and curvature effects on one hand, and on the other hand, flexural, rotatory-inertia, and shear-deformation effects are mutually exclusive in two ranges of wave lengths, separated by a “transition” wave length. Thus, in the full range of wave lengths, the associated lowest phase velocities may be determined on the basis of the membrane shell theory (for wave lengths larger than the transition wave length) and on the basis of Mindlin’s plate theory (for wave lengths smaller than the transition wave length).
Learning Support Assessment Study of a Computer Simulation for the Development of Microbial Identification Strategies
Authors: JOHNSON TRISTAN E. , GEDNEY CLARK 
Published: June 2021

This paper describes a study that examined how microbiology students construct knowledge of bacterial identification while using a computer simulation. The purpose of this study was to understand how the simulation affects the cognitive processing of students during thinking, problem solving, and learning about bacterial identification and to determine how the simulation facilitates the learning of a domain-specific problem-solving strategy.
As part of an upper-division microbiology course, five students participated in several simulation assignments. The data were collected using think-aloud protocol and video action logs as the students used the simulation. The analysis revealed two major themes that determined the performance of the students: Simulation Usage—how the students used the software features and Problem-Solving Strategy Development—the strategy level students started with and the skill level they achieved when they completed their use of the simulation.
Several conclusions emerged from the analysis of the data: (i) The simulation affects various aspects of cognitive processing by creating an environment that makes it possible to practice the application of a problem-solving strategy. The simulation was used as an environment that allowed students to practice the cognitive skills required to solve an unknown. (ii) Identibacter (the computer simulation) may be considered to be a cognitive tool to facilitate the learning of a bacterial identification problem-solving strategy. (iii) The simulation characteristics did support student learning of a problem-solving strategy. (iv) Students demonstrated problem-solving strategy development specific to bacterial identification. (v) Participants demonstrated an improved performance from their repeated use of the simulation.
Relationship between wealth and emotional well-being before, during, versus after a nationwide disease outbreak: a large-scale investigation of disparities in psychological vulnerability across COVID-19 pandemic phases in China
Authors: Yang Haiyang , Ma Jingjing 
Published: June 2021

ObjectivesThis research investigated whether certain population segments might be more psychologically vulnerable in different phases of a pandemic. Specifically, the research examined how disparities in wealth might be associated with differences in emotional well-being before, during, versus after the nationwide COVID-19 outbreak in China.Setting, participants and outcome measuresIn this large-scale cross-sectional study, three rounds of nationally representative data collection (N=27 760) were conducted immediately before (December 2019), in the midst of (February 2020), versus immediately after (April 2020) the countrywide COVID-19 outbreak in China. Participants’ emotional well-being, wealth (income, property ownership) and demographic information were measured using established instruments. Statistical analyses examined relationships between disparities in different types of wealth and emotional well-being across the pandemic phases.ResultsAlthough the onset of the coronavirus outbreak substantially degraded emotional well-being, having a higher income was associated with better emotional well-being during the outbreak. Property owners experienced a larger drop in emotional well-being during the outbreak than non-owners; however, the former was not emotionally worse off than the latter during the outbreak. After the nationwide COVID-19 outbreak had been contained and the economy reopened, those with more wealth of either type again became better off in emotional well-being than those with less. The highest income segment even experienced better emotional well-being after the end of the nationwide outbreak than prior to the outbreak. In contrast, the lowest income segment became worse off in emotional well-being after the nationwide outbreak ended than before the outbreak began.ConclusionPeople with less wealth tend to be emotionally worse off throughout the different phases of a disease outbreak. In particular, even after an outbreak has been contained, the poor are less able to restore their psychological well-being. Policies and interventions are needed to address disparities in mental health in the age of pandemics.
Lockdown, slow down: impact of the COVID-19 pandemic on physical activity—an observational study
Authors: Taylor Joanne Kathryn , Ndiaye Haarith , Daniels Matthew , Ahmed Fozia 
Published: June 2021

AimsIn response to the COVID-19 pandemic, the UK was placed under strict lockdown measures on 23 March 2020. The aim of this study was to quantify the effects on physical activity (PA) levels using data from the prospective Triage-HF Plus Evaluation study.MethodsThis study represents a cohort of adult patients with implanted cardiac devices capable of measuring activity by embedded accelerometery via a remote monitoring platform. Activity data were available for the 4 weeks pre-implementation and post implementation of ‘stay at home’ lockdown measures in the form of ‘minutes active per day’ (min/day).ResultsData were analysed for 311 patients (77.2% men, mean age 68.8, frailty 55.9%. 92.2% established heart failure (HF) diagnosis, of these 51.2% New York Heart Association II), with comorbidities representative of a real-world cohort.Post-lockdown, a significant reduction in median PA equating to 20.8 active min/day was seen. The reduction was uniform with a slightly more pronounced drop in PA for women, but no statistically significant difference with respect to age, body mass index, frailty or device type. Activity dropped in the immediate 2-week period post-lockdown, but steadily returned thereafter. Median activity week 4 weeks post-lockdown remained significantly lower than 4 weeks pre-lockdown (p≤0.001).ConclusionsIn a population of predominantly HF patients with cardiac devices, activity reduced by approximately 20 min active per day in the immediate aftermath of strict COVID-19 lockdown measures.Trial registration numberNCT04177199.
Inclusion of probiotic (Lactobacillus plantarum) in high- and low-nutrient-density diets reveals a positive result on the growth performance, nutrient digestibility, gas emission, and blood profile in growing pigs
Authors: Sampath Vetriselvi , Park Jae Hong , Kim In Ho 
Published: June 2021

A total of 160 growing pigs (24.69 ± 1.89 kg) were randomly assigned to one of four treatments in a 2 × 2 factorial design with two different levels of nutrient density diet with or without 0.3% probiotic (Lactobacillus plantarum). Each treatment had eight replicates with five pigs (three gilts and two barrows) per pen. At the end of the trial, pigs fed 0.3% probiotic supplement had significantly increased body weight, whereas the average daily gain and gain to feed ratio was significantly increased in both probiotic and high-nutrient density (HD) diet. The nutrient digestibility of dry matter was significantly increased in pigs fed HD diet, whereas nitrogen and gross energy digestibility and blood characters immunoglobulin and lymphocyte counts were significantly increased in both HD and probiotic groups. Inclusion of HD diet with 0.3% probiotic significantly decreased NH3 and H2S gas emission. Moreover, nitrogen and energy showed a significant interaction between probiotic and density diet. In summary, dietary probiotics with HD diet increased the growth performance, nutrient digestibility, blood profile, and reduced gas emission. We suggest that 0.3% probiotic with HD diet could serve as an alternative feed additive to enhance the growth performance of growing pigs.
On the Asymptotic Insensitivity of the Supermarket Model in Processor Sharing Systems
Authors: Kielanski Grzegorz , Van Houdt Benny 
Published: June 2021

The supermarket model is a popular load balancing model where each incoming job is assigned to a server with the least number of jobs among d randomly selected servers. Several authors have shown that the large scale limit in case of processor sharing servers has a unique insensitive fixed point, which naturally leads to the belief that the queue length distribution in such a system is insensitive to the job size distribution as the number of servers tends to infinity. Simulation results that support this belief have also been reported. However, global attraction of the unique fixed point of the large scale limit was not proven except for exponential job sizes, which is needed to formally prove asymptotic insensitivity. The difficulty lies in the fact that with processor sharing servers, the limiting system is in general not monotone.
In this paper we focus on the class of hyperexponential distributions of order 2 and demonstrate that for this class of distributions global attraction of the unique fixed point can still be established using monotonicity by picking a suitable state space and partial order. This allows us to formally show that we have asymptotic insensitivity within this class of job size distributions. We further demonstrate that our result can be leveraged to prove asymptotic insensitivity within this class of distributions for other load balancing systems.
Finding the Optimal Partner to Pair with Bispecific Antibody Therapy for Multiple Myeloma
Authors: Louvet Cedric , Nadeem Omar , Smith Eric L. 
Published: June 2021

Abstract
Summary: BCMA/CD3ϵ-targeted bispecific antibody (BsAb) therapy represents a promising T cell–redirecting immunotherapy to treat relapsed and refractory multiple myeloma. However, rational combination strategies will most likely be key to achieve a long-lasting immune response. In this issue, Meermeier and colleagues investigate BsAb therapy in a syngeneic multiple myeloma model and elucidate that partnering with cyclophosphamide is associated with tempered activation, mitigated exhaustion of T cells, and is superior to pomalidomide or bortezomib in enhancing durable anti–multiple myeloma efficacy.
See related article by Meermeier et al., p. 354.
Ischemic Stroke in Patients With Pulmonary Arteriovenous Fistulas
Authors: Topiwala Karan K. , Patel Smit D. , Pervez Mubashir , Shovlin Claire L. , Alberts Mark J. 
Published: June 2021

Background and Purpose:
Pulmonary arteriovenous fistulas (PAVFs) are a treatable cause of acute ischemic stroke (AIS), not mentioned in current American Heart/Stroke Association guidelines. PAVFs are recognized as an important complication of hereditary hemorrhagic telangiectasia.

Methods:
The prevalence of PAVF and hereditary hemorrhagic telangiectasia among patients admitted with AIS in the United States (2005–2014) was retrospectively studied, utilizing the Nationwide Inpatient Sample database. Clinical factors, morbidity, mortality, and management were compared in AIS patients with and without PAVF/hereditary hemorrhagic telangiectasia.

Results:

Of 4 271 910 patients admitted with AIS, 822 (0.02%) were diagnosed with PAVF. Among them, 106 of 822 (12.9%) were diagnosed with hereditary hemorrhagic telangiectasia. The prevalence of PAVF per million AIS admissions rose from 197 in 2005 to 368 in 2014 (
P
trend
, 0.026). Patients with PAVF were younger than AIS patients without PAVF (median age, 57.5 versus 72.5 years), had lower age-adjusted inpatient morbidity (defined as any discharge other than home; 39.6% versus 46.9%), and had lower in-hospital case fatality rates (1.8% versus 5.1%). Multivariate analyses identified the following as independent risk markers (odds ratio [95% CI]) for AIS in patients with PAVF: hypoxemia (8.4 [6.3–11.2]), pulmonary hemorrhage (7.9 [4.1–15.1]), pulmonary hypertension (4.3 [4.1–15.1]), patent foramen ovale (4.2 [3.5–5.1]), epistaxis (3.7 [2.1–6.8]), venous thrombosis (2.6 [1.9–3.6]), and iron deficiency anemia (2 [1.5–2.7]). Patients with and without PAVF received intravenous thrombolytics at a similar rate (5.9% versus 5.8%), but those with PAVF did not receive mechanical thrombectomy (0% versus 0.7%).

Conclusions:
Pulmonary arteriovenous fistula–related ischemic stroke represents an important younger demographic with a unique set of stroke risk markers, including treatable conditions such as causal PAVFs and iron deficiency anemia.
Europeanization of General Administrative Procedure in Serbia
Authors: Davinić Marko , Cucić Vuk 
Published: June 2021

Abstract
Serbia (as well as other countries of the Western Balkan region) recently adopted the new General Administrative Procedure Act (gapa). The drafting and adoption process was strongly influenced by the European Union and its experts from the sigma organization. The paper first analyzes the novelties introduced and improvements made under European influence. The authors then go on to analyze deficiencies of European influence in the drafting process. Two main shortcomings thereof were the false deregulation and debureaucratization of gapa and the ‘one-size-fits-all’ approach applied in all the countries of the Western Balkan region, in spite of inherent differences in their legal systems. The purpose of the criticism given in the paper is to avoid the same issues in the future, during the process of harmonization of Serbian law with the acquis communautaire.
The Class Action in Lithuania and Poland: History, Experiences and Lessons
Authors: Nekrošius Vytautas , Flaga-Gieruszyńska Kinga 
Published: June 2021

Abstract
The article analyses the peculiarities of the regulation of Class Action institution in the civil proceedings of Lithuania and Poland. Due to its limited scope, this article investigates the civil proceedings in the first instance courts only. The authors draw a special focus on the comparative analysis and the analysis of the effectiveness of the procedure in the current regulation by investigating both the doctrine and the available limited case law. The subject of considerations are problems relating both to the admissibility of filing a class action, as well as the course of court proceedings in cases concerning group proceedings, with particular emphasis on their differences from other procedural structures in Poland and Lithuania.
Some Developments and Issues after the Adoption of UNCLOS
Authors: Tuerk Helmut 
Published: June 2021

Abstract
The United Nations Convention on the Law of the Sea (UNCLOS) is a framework treaty and a number of its provisions lend themselves to divergent interpretations. There are developments that had not been foreseen at the time of its adoption. The International Tribunal for the Law of the Sea (ITLOS) has made a substantive contribution to the development of the law of the sea by its jurisprudence, including advisory opinions. The issue of the regime of islands, which has in particular arisen in the South China Sea, is still highly controversial and no consistent State practice exists. A largely unresolved and complex question is that of the limits of the international seabed Area as the Commission on the Limits of the Continental Shelf (CLCS) is overburdened by a tremendous and unforeseen heavy workload. The issue of Marine Genetic Resources (MGRs) in Areas Beyond National Jurisdiction (ABNJ), of which there was no knowledge at the time of the elaboration of UNCLOS, remains to be resolved by a further implementation agreement to UNCLOS currently under negotiation.
Psychosomatic Pain? The Meanings of Musculoskeletal Affliction in Finnish Medicine, ca. 1950–2000
Authors: Hyrkäs Eve-Riina 
Published: June 2021

Abstract
In recent decades, pain has received extensive attention from historians. However, the boundary work between organic and psychogenic pain has been less studied. To address the mind–body problem in the history of pain, this article examines how Finnish physicians in the latter half of the twentieth century have applied the psychosomatic framework to three painful conditions: rheumatoid arthritis, chronic backache and fibromyalgia. Through the interrelated case studies, it is argued that the medical discussion on musculoskeletal pain reflected social and economic interests and values that evolved in the course of the twentieth century. The psychogenic illness explanation compelled physicians to step outside the confines of biomedical rationale. Therefore, the descriptions of the ‘mind’ behind the ‘body’ render conspicuous for historians the values, moral norms and social expectations that underlie biomedicine.
High-resolution observations of microscale influences on a tornado track using Unpiloted Aerial Systems (UAS)
Authors: Wagner Melissa A. , Doe Robert K. , Wang Chuyuan , Rasmussen Erik , Coniglio Michael C. , Elmore Kimberly L. , Balling Robert C. , Cerveny Randall S. 
Published: June 2021

AbstractTopography can have a significant influence on tornado intensity and direction by altering the near-surface inflow. However, past research involving topographic influence on tornadoes has shown significant variety in investigative approaches and conclusions. This study uses Unpiloted Aerial Systems (UAS)-based high-resolution imagery, UAS-based 3D-modeling products, and correlation analyses to examine topographical influences on a portion of the 01 May 2018 Tescott, Kansas EF3 tornado. Two new metrics, Visible Difference Vegetative Index (VDVI) gap and (VDVI) aspect ratio, are introduced to quantify damage severity using UAS-based imagery and elevation information retrieved from a UAS-based digital surface model (DSM). Areas of enhanced scour are seen along the track in areas of local elevation maxima. Correlation analysis shows that damage severity, as measured by VDVI gap and VDVI aspect ratio, are both well correlated with increasing elevation. VDVI gap is only weakly correlated with slope, while VDVI aspect ratio is not correlated with slope. These findings are statistically significant at p < 0.05. As the tornado weakened in intensity, the path became non-linear, traversing between two local elevation maxima. It is hypothesized that fast-moving intense flow formed and weakened as elevation increased over the short spatial distance. This research shows topography and surface conditions are two of many important variables that should be considered when performing tornado-damage site investigations. It also illustrates the importance of UASs in detailed tornado analysis. VDVI gap and VDVI aspect ratio can provide insight into damage severity as a function of topography.
Dietary diversity and its determinants among Khasi and Garo indigenous women (15 to 49 years) in Meghalaya, northeast India
Authors: Nongrum Melari Shisha , Pawera Lukas , Mawroh Bhogtoram 
Published: June 2021

Background: Despite generally high agrobiodiversity, the Khasi and Garo indigenous people in Meghalaya have poor nutritional status among children and women. Aim: To assess the dietary diversity of the Khasi and Garo indigenous women of reproductive age in Meghalaya, while examining the associated factors that affect it and to map the diversity of local food plants. Methods: A dietary survey was conducted through 24-hour recall with 276 women from 28 villages of Meghalaya. The mapping of local food plants was conducted through key informant interviews and focus group discussions in the same villages. Results: The mean minimum dietary diversity for women is 4.22 (SD ±1.26); with one-third (37%) of the women attaining a minimum dietary diversity of five or more food groups in a day. There were significant differences in the dietary diversity among the indigenous groups, the Garo community attaining higher minimum dietary diversity for women. There was also an inverse association between the number of land uses and dietary diversity. The mean number of food plants (including crop varieties) found in each village is 203 (SD±45.7). Conclusions: There is potential to enhance dietary diversity through diversifying lesser consumed crops such as vitamin A-rich vegetables and fruits, nuts, seeds and green leafy vegetables in existing land holdings. Also, proper management and access to the commons will provide a sustainable resource base for diet and food security, enhance dietary diversity and bridge the hidden hunger among children and women.