bluuebunny/crossref_metadata_2025_split huggingface dataset:
Breadth of Ownership and the Cross-Section of Corporate Bond Returns
Authors: Huang Jing-Zhi , Qin Nan , Wang Ying 
Published: October 2023

Using breadth of corporate bond fund ownership to proxy for the combination of short-sale constraints and divergence of opinions in the corporate bond market, this paper investigates whether and to what extent Miller’s overpricing theory holds for corporate bonds. Consistent with the theory, we document a significant and positive relation between changes in breadth and the cross-section of future corporate bond returns. Because of the bounded upside of debt, the ability of changes in breadth to predict returns appears to be less pronounced for corporate bonds relative to stocks. Furthermore, this predictability is stronger among bonds with higher credit risk, indicating that the effect of short-sale constraints and divergence of opinions on bond mispricing tends to be larger for riskier bonds with more upside potential and, thus, more scope for overvaluation. This paper was accepted by Lukas Schmid, finance. Supplemental Material: The internet appendix and data are available at https://doi.org/10.1287/mnsc.2023.4950 .
Assortment Optimization Under the Multinomial Logit Model with Utility-Based Rank Cutoffs
Authors: Bai Yicheng , Feldman Jacob , Topaloglu Huseyin , Wagner Laura 
Published: October 2023

Augmenting the Modeling Power of the Multinomial Logit Model Using choice models to capture customer choice behavior has steadily become the common practice in revenue management. Discrete choice models allow one to capture the fact that customers substitute among the offered products, so if a particular product is not offered, then a portion of the customers interested in this product will substitute into a suitable available alternative. The multinomial logit model is one of the most commonly used choice models to capture customer choice in practice. This choice model is based on the utility maximization framework. A customer associates random utilities with the products, as well as the no-purchase option, in which case, the customer purchases the product with the largest utility, as long as its utility exceeds that of the no-purchase option. In “Assortment Optimization under the Multinomial Logit Model with Utility-Based Rank Cutoffs,“ Bai, Feldman, Topaloglu, and Wagner augment the modeling flexibility of the multinomial logit model, where a customer also leaves without a purchase if she cannot find one of her top few choices. They develop algorithms to find revenue-maximizing assortments.
Probabilistic Forecasting of Bus Travel Time with a Bayesian Gaussian Mixture Model
Authors: Chen Xiaoxu , Cheng Zhanhong , Jin Jian Gang , Trépanier Martin , Sun Lijun 
Published: October 2023

Accurate forecasting of bus travel time and its uncertainty is critical to service quality and operation of transit systems: it can help passengers make informed decisions on departure time, route choice, and even transport mode choice, and it also support transit operators on tasks such as crew/vehicle scheduling and timetabling. However, most existing approaches in bus travel time forecasting are based on deterministic models that provide only point estimation. To this end, we develop in this paper a Bayesian probabilistic model for forecasting bus travel time and estimated time of arrival (ETA). To characterize the strong dependencies/interactions between consecutive buses, we concatenate the link travel time vectors and the headway vector from a pair of two adjacent buses as a new augmented variable and model it with a mixture of constrained multivariate Gaussian distributions. This approach can naturally capture the interactions between adjacent buses (e.g., correlated speed and smooth variation of headway), handle missing values in data, and depict the multimodality in bus travel time distributions. Next, we assume different periods in a day share the same set of Gaussian components, and we use time-varying mixing coefficients to characterize the systematic temporal variations in bus operation. For model inference, we develop an efficient Markov chain Monte Carlo (MCMC) algorithm to obtain the posterior distributions of model parameters and make probabilistic forecasting. We test the proposed model using the data from two bus lines in Guangzhou, China. Results show that our approach significantly outperforms baseline models that overlook bus-to-bus interactions, in terms of both predictive means and distributions. Besides forecasting, the parameters of the proposed model contain rich information for understanding/improving the bus service, for example, analyzing link travel time and headway correlation using covariance matrices and understanding time-varying patterns of bus fleet operation from the mixing coefficients. Funding: This research is supported in part by the Fonds de Recherche du Quebec-Societe et Culture (FRQSC) under the NSFC-FRQSC Research Program on Smart Cities and Big Data, the Canadian Statistical Sciences Institute (CANSSI) Collaborative Research Teams grants, and the Natural Sciences and Engineering Research Council (NSERC) of Canada. X. Chen acknowledges funding support from the China Scholarship Council (CSC). Supplemental Material: The e-companion is available at https://doi.org/10.1287/trsc.2022.0214 .
VITAMIN D DEFICIENCY IN HIP FRACTURE PATIENTS IS ASSOCIATED WITH AN INCREASED MORTALITY RISK
Authors: Bayram J.M. , Kanesan H. , Clement N.D. 
Published: October 2023

The aims were to assess whether vitamin D deficiency influenced mortality risk for patients presenting with a hip fracture.A retrospective study was undertaken including all patients aged over 50 years that were admitted with a hip fracture to a single centre during a 24-month period. Serum vitamin D levels were assessed. Patient demographics and perioperative variables and mortality were collected. Cox regression analysis (adjusting for confounding) was utilised to determine the independent association between serum vitamin D level and patient mortality.The cohort consisted of 2075 patients with a mean age of 80.7 years and 1471 (70.9%) were female. 1510 (72.8%) patients had a serum vitamin D level taken, of which 876 (58.0%) were deficient (<50nmol/l). The median follow up was 417 (IQR 242 to 651) days. During follow up there were 464 (30.7%) deaths. Survival at 1 year was significantly (p = 0.003) lower for patients who were vitamin D deficient (71.7%, 95% confidence intervals (CI) 68.6 to 74.9) compared to those who were not (79.0%, 95% CI 75.9 to 82.3). Vitamin D deficiency was also independently associated with an increased mortality risk at 2-years (HR 1.42, 95% CI 1.17 to 1.71, p = 0.03), but not at 1-year (p = 0.08).Hip fracture patients with vitamin D deficiency had an increased mortality risk. This risk was independent of confounders at 2 years. The role of measuring vitamin D levels in these patients is unclear. Improved public health policy about vitamin D may be required to reduce deficiency in this patient population.
PATELLOFEMORAL INSTABILITY MANAGEMENT IN A PROSPECTIVE PAEDIATRIC COHORT IN EDINBURGH
Authors: Aithie J. , Robinson P. , Butcher R. , Denton M. , Simpson A.H.R.W. , Messner J. 
Published: October 2023

Patellofemoral instability (PFI) is a common cause of knee pain and disability in the paediatric population. Patella alta, lateralised tibial tubercle, medial patellofemoral ligament (MPFL) deficiency, genu valgum and trochlear dysplasia are well known risk factors.A prospective database was created including patients referred through our physiotherapy pathway following first-time patella dislocation. Patella alta and lateralisation of the tibial tuberosity was treated with a Fulkerson-type tibial tubercle osteotomy(TTO). Medial patellofemoral ligament was reconstructed using quads tendon autograft pull-down technique. A modified Sheffield protocol was used postoperatively allowing weightbearing in a hinged knee brace.Forty patients were identified with 8 patients having bilateral presentations. Male to female ratio was 12:28 with an age range of 4–17 years. Eight patients had congenital PFI, five patients acquired PFI through traumatic patella dislocation and twenty-seven patients developed PFI from recurrent dislocations. Structural abnormalities were found in 38(95%) of patients. Patella alta (Caton-Deschamps index >1.2) was identified in 19(47%) patients, genu valgum in 12(30%) patients, increased tibial tubercle-trochlear groove distance(TT-TG>20mm) was present in 9(22.5%) patients and persistent femoral anteversion(> 20 deg) in 7(17%) patients.Eight patients were treated with TTO and MPFL reconstruction, three patients with MPFL reconstruction alone and five patients had guided growth for genu valgum correction. Ten patients are awaiting surgery. No postoperative patients had recurrence of PFI at their latest follow up.PFI is a common problem in the adolescent paediatric population with identifiable structural abnormalities. Correcting structural pathology with surgery leads to predictable and safe outcomes.
pH biosensors based on hydrogel optical fiber
Authors: Bian Zhenglan , Dai Caihong , Chu Fenghong , Hu Anduo , Xue Liang , Xu Qing , Feng Yuan , Zhou Bin 
Published: October 2023

This paper presents a hydrogel optical fiber fluorescence pH sensor doped with 5(6)-carboxyfluorescein (5(6)-FAM). The hydrogel optical fiber was fabricated with 2-hydroxy-2-methylpropiophenone as a photoinitiator, with different concentrations of polyethylene glycol diacrylate (PEGDA) for the core and cladding. A pH-sensitive fluorescence indicator 5(6)-FAM was doped into the core of the fiber. The prepared hydrogel optical fiber pH sensor showed good response within the pH range of 5.0–9.0. The linear range of the pH sensor is 6.0 to 8.0, with R2=0.9904; within this range, the sensor shows good repeatability and reversibility, and the resolution is 0.07 pH units. The pHs of pork tissues soaked in different pH buffers were detected by the hydrogel optical fiber pH sensor; the linearity is 0.9828 when the pork tissue pH is in the range of 6.0–7.5. Due to the good ion permeability and biocompatibility of the hydrogel, this hydrogel optical fiber pH sensor is expected to be used in biomedical applications.
High Q-factor Fano resonances based on a permittivity-asymmetric dielectric pea-shaped cylinder
Authors: Pang Jielong , Fang Wenjing , Guo Haoyu , Wang Tingting , Fan Xinye , Niu Huijuan , Huang Yongqing , Bai Chenglin 
Published: October 2023

We numerically investigate two Fano resonances with high Q-factors based on a permittivity-asymmetric metastructure composed of two pea-shaped cylinders. By employing different materials to break the permittivity-asymmetry, the quasi-bound state of the continuum spectrum (BIC) resonance at 982.87 nm is excited, showing the Q-factor as high as 8183.7. The electromagnetic fields and vectors are analyzed by using the finite-difference time-domain (FDTD) method, and the resonance modes are identified as magnetic dipole (MD) responses and MDs by multipole decomposition in Cartesian coordinates, displaying that the light is confined within a pea-shaped cylinder to achieve localized field enhancement. In addition, the sensing performances of the metastructure are evaluated, and an optical refractive index sensor can be obtained with the sensitivity of 152 nm/RIU and maximum figure of merit (FOM) of 832.6. This proposed structure offers a new, to the best of our knowledge, way to achieve Fano resonant excitation on all-dielectric metastructures and can be used in nonlinear optics, biosensing, optical switches, and lasers.
Delay in healthcare seeking for young children with severe pneumonia at Mulago National Referral Hospital, Uganda: A mixed methods cross-sectional study
Authors: Ekyaruhanga Phiona , Nantanda Rebecca , Aanyu Hellen T. , Mukisa John , Ssemasaazi Judith Amutuhaire , John Mukeere , Aceng Palma , Rujumba Joseph 
Published: October 2023

Background
Globally, pneumonia is the leading infectious cause of under-five mortality, and this can be reduced by prompt healthcare seeking. Data on factors associated with delays in seeking care for children with pneumonia in Uganda is scarce.

Objectives
The study aimed to determine the prevalence, factors associated with delay, barriers, and facilitators of prompt healthcare seeking for children under five years of age with severe pneumonia attending Mulago National Referral Hospital (MNRH) Uganda.

Methods
A mixed methods cross-sectional study was conducted among 384 caregivers of children with severe pneumonia at MNRH. Quantitative data was collected using interviewer-administered structured questionnaires and qualitative data through focus group discussions with caregivers. Descriptive statistics were used to determine the prevalence of delay in care seeking. Logistic regression analysis was used to determine the factors that were independently associated with delay in seeking healthcare. Content thematic analysis was used to analyze for barriers and facilitators of prompt healthcare seeking.

Results
The prevalence of delay in seeking healthcare was 53.6% (95% CI: 48.6–58.6). Long distance to a hospital (AOR = 1.94, 95% CI 1.22–3.01, p value = 0.003), first seeking care elsewhere (AOR = 3.33, 95% CI 1.85–6.01, p value = 0.001), and monthly income ≤100,000 UGX (28 USD) (AOR = 2.27,95% CI 1.33–3.86, p value = 0.003) were independently associated with delay in seeking healthcare. Limited knowledge of symptoms, delayed referrals, self-medication, and low level of education were barriers to prompt healthcare seeking while recognition of symptoms of severe illness in the child, support from spouses, and availability of money for transport were key facilitators of early healthcare seeking.

Conclusion
This study showed that more than half of the caregivers delayed seeking healthcare for their children with pneumonia symptoms. Caregivers who first sought care elsewhere, lived more than 5 km from the hospital, and earned less than 28 USD per month were more likely to delay seeking healthcare for their children with severe pneumonia. Limited knowledge of symptoms of pneumonia, self-medication, and delayed referral hindered prompt care-seeking. Key facilitators of prompt care-seeking were accessibility to health workers, support from spouses, and recognition of symptoms of severe illness in children. There is a need for programs that educate caregivers about pneumonia symptoms, in children less than five years.
Applications of genetic code expansion and photosensitive UAAs in studying membrane proteins
Authors: Zhao Shu , Liu Dong 
Published: October 2023

Abstract
Membrane proteins are the targets for most drugs and play essential roles in many life activities in organisms. In recent years, unnatural amino acids (UAAs) encoded by genetic code expansion (GCE) technology have been widely used, which endow proteins with different biochemical properties. A class of photosensitive UAAs has been widely used to study protein structure and function. Combined with photochemical control with high temporal and spatial resolution, these UAAs have shown broad applicability to solve the problems of natural ion channels and receptor biology. This review will focus on several application examples of light-controlled methods to integrate GCE technology to study membrane protein function in recent years. We will summarize the typical research methods utilizing some photosensitive UAAs to provide common strategies and further new ideas for studying protein function and advancing biological processes.
A Framework for a Mobile Knowledge Management Application for Crisis and Emergency Management
Authors: Bayrak Tuncay 
Published: October 2023

Abstract
The widespread availability of mobile devices offers enormous opportunities for first responders to have instant access to sources of information, and collaborate with one another when responding to an emergency. Although various knowledge management systems have been developed in different domains, no mobile knowledge management application so far has been developed in the area of emergency or crisis management. This study addresses various technical requirements for a mobile knowledge management application specifically designed for first responders to an emergency or crisis.
Crystal structure of 2-((2-fluoro-4-(trifluoromethyl)phenyl)(hydroxy)methyl)-7-methoxy-3,4-dihydronaphthalen-1((2H))-one, C19H16F4O3
Authors: Li Yu-Lun , Meng Qing-Guo , Hou Gui-Ge , Geng Zi-Kai 
Published: October 2023

Abstract
C19H16F4O3, monoclinic, P21/n (no. 14), a = 9.5792(5) Å, b = 9.5542(4) Å, c = 17.6986(9) Å, β = 99.508(5)∘, V = 1597.55(14) Å3, Z = 4, R

gt
(F) = 0.0481, wR

ref
(F
2) = 0.1153, T = 293 K.
The crystal structure of (bis(benzimidazol-2-yl-methyl)amine-κ3N,N′,N″
)-(dihydrogen L-malate-κ2O,O
′)copper(II) perchlorate dihydrate, CuC20H24ClN5O12
Authors: Yang Yu , Liu Huanru , Wang Yuhang , Meng Xianggao 
Published: October 2023

Abstract
CuC20H24ClN5O12, monoclinic, P

1
‾

$\overline{1}$

(no. 4), a = 7.4467(4) Å, b = 17.3823(9) Å, c = 9.6974(5) Å, α = 90°, β = 103.373(2)°, γ = 90°, V = 1221.20(11) Å3, Z = 2, Rgt
(F) = 0.0642, wRref
(F
2) = 0.1757, T = 100(2) K.
To stress or not to stress: what can Mandarin pronouns inform us of the accessibility of topic and focus?
Authors: Zhu Conghui , Wu Fuyun 
Published: October 2023

Abstract
Referents with a topical or focused status have been shown to be preferable antecedents in real-time resolution of pronouns. However, it remains unclear regarding whether topicality and focus compete for prominence when co-present in the same narrative, and if so, how differential prominence affects prosodic realization of a subsequent pronoun. Building upon the general understanding that stress on pronouns signals an unusual, less accessible interpretation, we take advantage of the conditional bi-clausal construction in conjunction with homophonic 3rd person pronouns in Chinese. We manipulated the information status of two referents that were introduced into a six-clause narrative in succession, specifically (i) Topic and (ii) Focus, and also (iii) the Reference of the Pronoun (either the first or second referent). Our acoustic analyses showed that pronouns were produced with higher F0s when the first referent was topicalized than when it was not topicalized under conditions where the second referent was focused. Pronouns referring back to the first referent were uttered longer when the referent was not topicalized than when it was topicalized. These results suggest accessibility statuses of referents vary dynamically in response to different prominence-lending cues, and these variations can be captured by the prosodic features of a following pronoun.
Wh-questions in dynamic inquisitive semantics
Authors: Roelofsen Floris , Dotlačil Jakub 
Published: October 2023

Abstract
This target article presents a type-theoretic dynamic inquisitive semantics framework, extending the first-order system presented in (Dotlačil, Jakub & Floris Roelofsen. 2019. Dynamic inquisitive semantics: Anaphora and questions. Sinn und Bedeutung 23. 365–382). Within this framework, we develop a compositional treatment of wh-questions whose basic premise is that a wh-phrase introduces a discourse referent u, just like non-interrogative indefinites do, and requires the presence of an operator in the left periphery of the clause which requests a witness for u, i.e., it raises an issue whose resolution requires identifying at least one individual that has all the properties ascribed to u. In previous work, it has been argued that a dynamic semantic analysis of questions is needed to account for anaphora with wh-antecedents and for certain kinds of intervention effects (Haida, Andreas. 2007. The indefiniteness and focusing of wh-words. Berlin: Humboldt University PhD thesis). Here, we further develop the general approach and argue that it has several additional benefits. Namely, it allows for a uniform treatment of single-wh and multiple-wh questions, it derives mention-some and mention-all readings in a principled way, as well as an often neglected partial mention-some reading in multiple-wh questions, it can capture certain constraints on the availability of mention-some readings, and the effects of number marking on which-phrases across single-wh and multiple-wh questions.
Free to See the Big Picture: Autonomy Increases Abstractness of Action Identification
Authors: Körner Anita , Götz Felix J. , Krishna Anand 
Published: October 2023

People sometimes feel autonomous—free to choose and able to control their actions; at other times, they feel restricted in what they can do and what the outcome will be. Based on Action Identification Theory, the present work examines whether autonomy influences how abstractly actions are represented. In 6 studies, high (vs. low) autonomy increased abstractness of action identification. Participants selected more abstract (vs. concrete) redescriptions of actions when they imagined wanting (vs. having) to perform these actions (Experiments 1a–1b), when autonomy was varied via situation descriptions (Experiments 2a–2b), via memory content (Experiment 3), and in an ecological setting (Study 4). Finding that high (vs. low) autonomy increased abstractness of action identification constitutes an extension of Action Identification Theory to incorporate social determinants.
On the State, Potentials, and Current Tensions of the Social Sciences in Latin America
Authors: Blois Juan Pedro , Centeno Miguel A. 
Published: October 2023

This essay introduces a special collection on the state, potential, and tensions of the social sciences in Latin America. It briefly reflects on the historic role that these disciplines have exerted in society, policy, and culture, their troubled trajectory –– which included episodes of rapid expansion and significant retreatment (if not ostracism) ––, and their current situation in terms of institutional development and research agendas. It also elaborates on how Latin American social scientists have dealt with the difficulties (but also potentials) of studying social structures from a peripheral global region and how they have dealt with the classic tension between involvement and detachment. Against this backdrop, this special collection includes a series of papers exploring how certain topics of especial importance in Latin America –– i.e. development and world economy; state capacity, public administration, and political legitimacy; and violence, conflict, and social cohesion –– have been studied. It also features a group of papers examining some of the main recent institutional and intellectual trends within local social sciences: academic professionalization vis-a-vis activism, the expansion of teaching in the under and graduate levels and its effects on disciplinary borders, the “parochialism” (vs. cosmopolitanism) in publishing and research topics, as well as the potentials and risks of the adoption of open science as recently encouraged by UNESCO. While it would be pointless to attempt to provide a detailed portray of a much-diversified reality, the variety of topics addressed by the papers, as much as the different approaches guiding each contribution ––which range from detached descriptions to normative policy-oriented (and well-informed) essays, from “distant reading” based on bigdata to rich sociohistorical reconstruction––, try to convey some of Latin American social sciences’ vitality and diverse interests.