bluuebunny/crossref_metadata_2025_split huggingface dataset:
Learn class hierarchy using convolutional neural networks
Authors: La Grassa Riccardo , Gallo Ignazio , Landro Nicola 
Published: February 2021

AbstractA large amount of research on Convolutional Neural Networks (CNN) has focused on flat Classification in the multi-class domain. In the real world, many problems are naturally expressed as hierarchical classification problems, in which the classes to be predicted are organized in a hierarchy of classes. In this paper, we propose a new architecture for hierarchical classification, introducing a stack of deep linear layers using cross-entropy loss functions combined to a center loss function. The proposed architecture can extend any neural network model and simultaneously optimizes loss functions to discover local hierarchical class relationships and a loss function to discover global information from the whole class hierarchy while penalizing class hierarchy violations. We experimentally show that our hierarchical classifier presents advantages to the traditional classification approaches finding application in computer vision tasks. The same approach can also be applied to some CNN for text classification.
Bumble bee species distributions and habitat associations in the Midwestern USA, a region of declining diversity
Authors: Novotny Jessie Lanterman , Reeher Paige , Varvaro Megan , Lybbert Andrew , Smith Jesse , Mitchell Randall J. , Goodell Karen 
Published: February 2021

AbstractBumble bees (Bombus spp.) are important pollinators, yet rapidly declining globally. In North America some species are thriving while others are nearing extinction. Recognizing subtle differences in species’ biology and responses to environmental factors is required to illuminate key threats and to understand their different population trajectories. We intensively surveyed bumble bees in Ohio, USA, along the receding southern boundary of many species’ ranges, to evaluate current conservation status of the state’s species. In 318 90-min field surveys across two consecutive years we observed 23,324 bumble bees of 10 species visiting 170 plant species. Habitat, landscape, latitude, and their interactions significantly influenced bumble bee abundance, species richness, and community composition during peak season. Sites planted with flowers yielded more bumble bee individuals and species than did sites not planted with bee food plants. Bombus impatiens, B. griseocollis, and B. bimaculatus comprised 93% of all observations. Their abundances all peaked in habitats planted with wildflowers, but there were species-specific responses to local and landscape factors. Three less common species (B. fervidus, B. vagans, and B. perplexus) were more likely to be found in forested landscapes, particularly in the northeastern portion of the state. Bombus perplexus was also affiliated with planted urban wildflower patches. These results provide a strong starting point for future monitoring and conservation intervention that targets less common species. A quantitative synthesis of detailed state-level and regional datasets would allow additional insight into broad scale patterns of diversity in bumble bee communities and species conservation trajectories.
On the Analogy Between Business and Sport: Towards an Aristotelian Response to The Market Failures Approach to Business Ethics
Authors: Sinnicks Matthew 
Published: February 2021

AbstractThis paper explores the notion that business calls for an adversarial ethic, akin to that of sport. On this view, because of their competitive structure, both sport and business call for behaviours that are contrary to ‘ordinary morality’, and yet are ultimately justified because of the goods they facilitate. I develop three objections to this analogy. Firstly, there is an important qualitative difference between harms risked voluntarily and harms risked involuntarily. Secondly, the goods achieved by adversarial relationships in sport go beyond the function of sport, i.e. to entertain audiences. Thirdly, the most plausible account of the athlete’s motivational development starts with their love of the sport, which can explain a commitment to the sporting ethics in a way that is not paralleled in business. I close by drawing attention to the ways in which an Aristotelian conception of business ethics may be able to accommodate these objections.
Comparative study on the physical entrapment of soy and mushroom proteins on the durability of bacterial cellulose bio‐leather
Authors: Kim Hyunjin , Song Ji Eun , Kim Hye Rim 
Published: February 2021

AbstractThis study aimed to develop eco-friendly bacterial cellulose (BC) bio-leather with improved durability using plant-based proteins, namely soy protein isolate (SPI) and mushroom protein (MP), which were physically entrapped inside the BC, respectively. The amounts of the plant-based proteins were determined by evaluating the tensile strength of BC bio-leather, and were found to be 20 wt% and 50 wt% of BC for SPI and MP, respectively. The enhanced properties of mechanical strength and durability of BC bio-leather were measured in terms of changes in water resistance, tensile strength, flexibility, crease recovery, and dimensional stability. The durability of BC was improved after the entrapment of proteins, and moreover, the durability of BC entrapped with plant-based proteins was further improved by the addition of glycerol. Especially, BC entrapped with MP and glycerol had better water resistance, tensile strength, flexibility, and crease recovery compared to cowhide leather. The chemical and physical structures of BC bio-leathers were studied using Fourier transform-infrared spectroscopy, X-ray diffraction, field-emission scanning electron microscopy, and energy dispersive X-ray spectroscopy analyses. From the results, it was confirmed that BC entrapped with MP and glycerol could be a suitable leather substitute.
Kinetic properties of sodium-ion transfer at the interface between graphitic materials and organic electrolyte solutions
Authors: Kondo Yasuyuki , Fukutsuka Tomokazu , Yokoyama Yuko , Miyahara Yuto , Miyazaki Kohei , Abe Takeshi 
Published: February 2021

AbstractGraphitic materials cannot be applied for the negative electrode of sodium-ion battery because the reversible capacities of graphite are anomalously small. To promote electrochemical sodium-ion intercalation into graphitic materials, the interfacial sodium-ion transfer reaction at the interface between graphitized carbon nanosphere (GCNS) electrode and organic electrolyte solutions was investigated. The interfacial lithium-ion transfer reaction was also evaluated for the comparison to the sodium-ion transfer. From the cyclic voltammograms, both lithium-ion and sodium-ion can reversibly intercalate into/from GCNS in all of the electrolytes used here. In the Nyquist plots, the semi-circles at the high frequency region derived from the Solid Electrolyte Interphase (SEI) resistance and the semi-circles at the middle frequency region owing to the charge-transfer resistance appeared. The activation energies of both lithium-ion and sodium-ion transfer resistances were measured. The values of activation energies of the interfacial lithium-ion transfer suggested that the interfacial lithium-ion transfer was influenced by the interaction between lithium-ion and solvents, anions or SEI. The activation energies of the interfacial sodium-ion transfer were larger than the expected values of interfacial sodium-ion transfer based on the week Lewis acidity of sodium-ion. In addition, the activation energies of interfacial sodium-ion transfer in dilute FEC-based electrolytes were smaller than those in concentrated electrolytes. The activation energies of the interfacial lithium/sodium-ion transfer of CNS-1100 in FEC-based electrolyte solutions were almost the same as those of CNS-2900, indicating that the mechanism of interfacial charge-transfer reaction seemed to be the same for highly graphitized materials and low-graphitized materials each other.
Graphic abstract
Impact of “non-lethal” tarsal clipping on bumble bees (Bombus vosnesenskii) may depend on queen stage and worker size
Authors: Mola John M. , Stuligross Clara , Page Maureen L. , Rutkowski Danielle , Williams Neal M. 
Published: February 2021

Abstract
Recent bumble bee declines have prompted the development of novel population monitoring tools, including the use of putatively non-lethal tarsal clipping to obtain genetic material. However, the potential side effects of tarsal clipping have only been tested in the worker caste of a single domesticated species, prompting the need to more broadly test whether tarsal clipping negatively affects sampled individuals. To determine if tarsal clipping reduces queen survivorship and colony establishment, we collected wild queens of Bombus vosnesenskii and clipped tarsi from a single leg of half the individuals. We reared captive queens and estimated survivorship and nest establishment success. We also clipped tarsi of workers from a subset of colonies across a range of body sizes. We found no consistent negative effect of clipping on queen survival. In the first year, clipped nest-searching queens suffered heavy mortality, but there was no effect on foraging queens. The following year, we found no effect of clipping on queen survival or establishment. Clipping did not reduce overall worker survival but reduced survivorship for those in the smallest size quartile.

Implications for insect conservation
Our findings suggest tarsal clipping does not have consistent negative effects on individual survival. However, our results varied with queen behavioral state, year, and worker size, suggesting differences within and among species and interactions with landscape stressors warrant further study. In the interim, we recommend researchers and conservationists minimize the use of tarsal clipping for sensitive species, populations, or small workers except in cases of exceptional scientific need.
BiInO3 phases under asymmetric in-plane strain
Authors: Herklotz Andreas , Tippey Kristin , Huon Amanda , Koch Martin M. , Dörr Kathrin , Herklotz Frank 
Published: February 2021

Abstract
Density functional theory is used to study the effect of asymmetric in-plane strain on various BiInO3 phases. Structural relaxation is carried out to simulate the growth of coherently strained epitaxial films on (001) oriented orthorhombic perovskite substrates. The results are in particular analyzed with respect to commercially available substrates in order to assess the stabilization of new and fundamentally interesting BiInO3 phases. We find that a pyroxene-like Pcca phase is energetically more favorable than the bulk-like Pna21 structure on standard cubic substrate materials, such as SrTiO3. However, the presence of imaginary phonon modes suggests that this phase is dynamically instable. The bulk-like structure instead is stable over a wide range of lattice in-plane strain, but coherent growth requires substrates with unusually large lattice parameters. We suggest the use of lanthanate substrates in order to produce high-quality thin films of the bulk phase.

Graphical abstract
Global Solution of Semi-infinite Programs with Existence Constraints
Authors: Djelassi Hatim , Mitsos Alexander 
Published: February 2021

AbstractWe consider what we term existence-constrained semi-infinite programs. They contain a finite number of (upper-level) variables, a regular objective, and semi-infinite existence constraints. These constraints assert that for all (medial-level) variable values from a set of infinite cardinality, there must exist (lower-level) variable values from a second set that satisfy an inequality. Existence-constrained semi-infinite programs are a generalization of regular semi-infinite programs, possess three rather than two levels, and are found in a number of applications. Building on our previous work on the global solution of semi-infinite programs (Djelassi and Mitsos in J Glob Optim 68(2):227–253, 2017), we propose (for the first time) an algorithm for the global solution of existence-constrained semi-infinite programs absent any convexity or concavity assumptions. The algorithm is guaranteed to terminate with a globally optimal solution with guaranteed feasibility under assumptions that are similar to the ones made in the regular semi-infinite case. In particular, it is assumed that host sets are compact, defining functions are continuous, an appropriate global nonlinear programming subsolver is used, and that there exists a Slater point with respect to the semi-infinite existence constraints. A proof of finite termination is provided. Numerical results are provided for the solution of an adjustable robust design problem from the chemical engineering literature.
Do company-owned academic patents influence firm performance? Evidence from the Italian industry
Authors: Cerulli Giovanni , Marin Giovanni , Pierucci Eleonora , Potì Bianca 
Published: February 2021

AbstractWe document that firms holding academic patents in their portfolios perform better in terms of market power since they benefit from academic knowledge spillovers generated by academic patents. On the other hand, we detect a negative effect on firms’ short-term profitability imputable to a larger fixed cost associated to the acquisition and exploitation of these patents. In terms of policy, our analysis suggests focusing on company-owned academic patents. A set of economic incentives dedicated to university–industry knowledge transfer through academic patents could support integration between basic and applied research.
Filling the void of family leadership: institutional support to business model changes in the Italian Industry 4.0 experience
Authors: Cucculelli Marco , Dileo Ivano , Pini Marco 
Published: February 2021

AbstractWe examine whether the probability of innovating a company’s business model towards the Industry 4.0 paradigm is affected by external institutional support and family leadership. Industry 4.0 is the information-intensive transformation of global manufacturing enabled by Internet technologies aimed at reinventing products and services from design and engineering to manufacturing. Using a sample of 3000 firms from a corporate survey on the manufacturing industry in Italy, our results showed that family leadership has a significant positive influence on the adoption of Industry 4.0 business models, but only in terms of family ownership. By contrast, family management has a negative influence on the probability of adopting a new business model. However, this negative influence is almost totally offset by the presence of the Triple Helix, i.e. the external support by public institutions and universities, which counterbalances the lower propensity of family managers to adopt Industry 4.0 business models. This supporting role only occurs when institutions and universities act together.
Dispersers’ habitat detection and settling abilities modulate the effect of habitat amount on metapopulation resilience
Authors: Riotte-Lambert Louise , Laroche Fabien 
Published: February 2021

Abstract
Context
Metapopulation theory makes useful predictions for conservation in fragmented landscapes. For randomly distributed habitat patches, it predicts that the ability of a metapopulation to recover from low occupancy level (the “metapopulation capacity”) linearly increases with habitat amount. This prediction derives from describing the dispersal between two patches as a function of their features and the distance separating them only, without interaction with the rest of the landscape. However, if individuals can stop dispersal when hitting a patch (“habitat detection and settling” ability), the rest of habitat may modulate the dispersal between two patches by intercepting dispersers (which constitutes a “shadow” effect).

Objectives
We aim at evaluating how habitat detection and settling ability, and the subsequent shadow effect, can modulate the relationship between the metapopulation capacity and the habitat amount in the metapopulation.

Methods
Considering two simple metapopulation models with contrasted animal movement types, we used analytical predictions and simulations to study the relationship between habitat amount and metapopulation capacity under various levels of dispersers’ habitat detection and settling ability.

Results
Increasing habitat detection and settling ability led to: (i) larger metapopulation capacity values than expected from classic metapopulation theory and (ii) concave habitat amount–metapopulation capacity relationship.

Conclusions
Overlooking dispersers’ habitat detection and settling ability may lead to underestimating the metapopulation capacity and misevaluating the conservation benefit of increasing habitat amount. Therefore, a further integration of our mechanistic understanding of animals’ displacement into metapopulation theory is urgently needed.
Time integration of rigid bodies modelled with three rotation parameters
Authors: Holzinger Stefan , Gerstmayr Johannes 
Published: February 2021

AbstractThree rotation parameters are commonly used in multibody dynamics or in spacecraft attitude determination to represent large spatial rotations. It is well known, however, that the direct time integration of kinematic equations with three rotation parameters is not possible in singular points. In standard formulations based on three rotation parameters, singular points are avoided, for example, by applying reparametrization strategies during the time integration of the kinematic equations. As an alternative, Euler parameters are commonly used to avoid singular points. State-of-the-art approaches use Lie group methods, specifically integrators, to model large rigid body rotations. However, the former methods are based on additional information, e.g. the rotation matrix, which must be computed in each time step. Thus, the latter method is difficult to incorporate into existing codes that are based on three rotation parameters. In this contribution, a novel approach for solving rotational kinematics in terms of three rotation parameters is presented. The proposed approach is illustrated by the example of the rotation vector and the Euler angles. In the proposed approach, Lie group time integration methods are used to compute consistent updates for the rotation vector or the Euler angles in each time step and therefore singular points can be surmounted and the accuracy is higher as compared to the direct time integration of rotation parameters. The proposed update formulas can be easily integrated into existing codes that use either the rotation vector or Euler angles. The advantages of the proposed approach are demonstrated with two numerical examples.
Virtual magnetic resonance elastography has the feasibility to evaluate preoperative pituitary adenoma consistency
Authors: Lagerstrand Kerstin , Gaedes Nicholas , Eriksson Stig , Farahmand Dan , De Coursey Erica , Johansson Gudmundur , Jönsson Lars , Skoglund Thomas 
Published: February 2021

Abstract
Purpose
To evaluate the use of preoperative virtual Magnetic Resonance Elastography (vMRE) for patients undergoing transsphenoidal resection of pituitary adenomas (PA).

Methods
Ten patients (60.2 ± 19.6 years; 8 males) were prospectively examined with the vMRE-method prior to transsphenoidal surgery. vMRE-images, reflecting tissue stiffness were reconstructed. From these images, histograms as well as the mean stiffness values over the tumor body were extracted. Finally, vMRE-data was compared with the PA consistency at surgery blinded to vMRE.

Results
In all patients, successful vMRE-examination was performed enabling evaluation of even small PAs. For tumors with homogenous tissue, the mean stiffness value increased with surgical consistency grading. For heterogenous tumors, however, the mean stiffness value did not consistently reflect the grading at surgery. On the other hand, the vMRE-images and histograms were found to be able to characterize the tumor heterogeneity and display focal regions of high stiffness that were found to affect the surgery outcome in these PAs. The vMRE-images and histograms showed great promise in characterizing the consistency at surgery for these PAs.

Conclusion
Evaluation of PA consistency in preparation for surgery seems to be feasible using the vMRE-method. Our findings also address the need for high resolution diagnostic methods that can non-invasively display focal regions of increased stiffness, as such regions may increase the difficulty of transsphenoidal PA-resection.
Asian American Candidate Preferences: Evidence from California
Authors: Leung Vivien 
Published: February 2021

AbstractThe diversity of the Asian American population presents challenges for theories of bloc voting, partisan voting, and descriptive representation. What cues (if any) do Asian American voters rely on? How informative are racial and partisan cues to Asian American voters. This article looks at the candidate preferences of Asian American voters in the 2018 election. I look at elections where an Asian American candidate was on the ballot and compare outcomes within district to the gubernatorial race (a race with no minorities on the ballot). I use surname-coded voter registration records and precinct-level vote returns to estimate Asian American candidate preferences as a racial group and by national-origin. I find strong evidence of national-origin preferences (i.e. Vietnamese for a Vietnamese candidate) among Asian American voters. In instances where the national-origin of the candidate and the national-origin of the voter did not align, voters seem to rely on partisan cues. National-origin preferences are sufficient enough that in one instance voters switched parties within the same election to vote for a candidate of the same national-origin. These findings have implications for theories of minority vote choice and challenges the existing literature on the strength of partisan cues (replication data can be found at: https://sites.google.com/view/vivienleung/research).
Kadec–Klee properties of Orlicz–Lorentz sequence spaces equipped with the Orlicz norm
Authors: Cui Yunan , Foralewski Paweł , Hudzik Henryk , Kaczmarek Radosław 
Published: February 2021

AbstractThe necessary and sufficient conditions for both the Kadec–Klee property as well as the Kadec–Klee property with respect to the coordinatewise convergence in Orlicz–Lorentz sequence spaces equipped with the Orlicz norm and generated by arbitrary Orlicz functions as well as any non-increasing weight sequences are given. Moreover, for their subspaces of elements with an order continuous norm the full characterization of the Kadec–Klee property with respect to the coordinatewise convergence is presented. Some tools useful in the proofs of the main results are also provided.
The politics of bailouts: Estimating the causal effects of political connections on corporate bailouts during the 2008–2009 US financial crisis
Authors: Vukovic Vuk 
Published: February 2021

AbstractIn 2008, as the financial crisis unfolded in the United States, the banking industry elevated its lobbying and campaign spending activities. By the end of 2008, and during 2009, the biggest political spenders, on average, received the largest bailout packages. Is that relationship causal? In this paper, I examine the effect of political connections on the allocation of funds from the Troubled Asset Relief Program (TARP) to the US financial services industry during the 2008–2009 financial crisis. I find that TARP recipients that lobbied the government, donated to political campaigns, or whose top executives had direct connections to politics received better bailout deals. I estimate regression discontinuity design and instrumental variable models to uncover how election outcomes for politicians in close races affected the distribution of bailout funds for connected firms. The results do not imply that some banks were deliberately favored over others, just that favored banks benefited because of their proximity to the right people in power. If being politically connected matters in general, in times of crisis it matters even more.