bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reducing Interference Bias in Online Marketplace Experiments Using Cluster Randomization: Evidence from a Pricing Meta-experiment on Airbnb
Authors: Holtz David , Lobel Felipe , Lobel Ruben , Liskovich Inessa , Aral Sinan 
Published: April 2024

Online marketplace designers frequently run randomized experiments to measure the impact of proposed product changes. However, given that marketplaces are inherently connected, total average treatment effect (TATE) estimates obtained through individual-level randomized experiments may be biased because of violations of the stable unit treatment value assumption, a phenomenon we refer to as “interference bias.” Cluster randomization (i.e., the practice of randomizing treatment assignment at the level of “clusters” of similar individuals) is an established experiment design technique for countering interference bias in social networks, but it is unclear ex ante if it will be effective in marketplace settings. In this paper, we use a meta-experiment or “experiment over experiments” conducted on Airbnb to both provide empirical evidence of interference bias in online marketplace settings and assess the viability of cluster randomization as a tool for reducing interference bias in marketplace TATE estimates. Results from our meta-experiment indicate that at least 20% of the TATE estimate produced by an individual-level randomized evaluation of the platform fee increase we study is attributable to interference bias and eliminated through the use of cluster randomization. We also find suggestive, nonstatistically significant evidence that interference bias in seller-side experiments is more severe in demand-constrained geographies and that the efficacy of cluster randomization at reducing interference bias increases with cluster quality. This paper was accepted by Chris Forman, information systems. Supplemental Material: The online appendix and data files are available at https://doi.org/10.1287/mnsc.2020.01157 .
Ventilation during COVID-19 in a school for students with intellectual and developmental disabilities (IDD)
Authors: Zand Martin S. , Spallina Samantha , Ross Alexis , Zandi Karen , Pawlowski Anne , Seplaki Christopher L. , Herington Jonathan , Corbett Anthony M. , Kaukeinen Kimberly , Holden-Wiltse Jeanne , Freedman Edward G. , Alcantara Lisette , Li Dongmei , Cameron Andrew , Beaumont Nicole , Dozier Ann , Dewhurst Stephen , Foxe John J. 
Published: April 2024

Background
This study examined the correlation of classroom ventilation (air exchanges per hour (ACH)) and exposure to CO2 ≥1,000 ppm with the incidence of SARS-CoV-2 over a 20-month period in a specialized school for students with intellectual and developmental disabilities (IDD). These students were at a higher risk of respiratory infection from SARS-CoV-2 due to challenges in tolerating mitigation measures (e.g. masking). One in-school measure proposed to help mitigate the risk of SARS-CoV-2 infection in schools is increased ventilation.

Methods
We established a community-engaged research partnership between the University of Rochester and the Mary Cariola Center school for students with IDD. Ambient CO2 levels were measured in 100 school rooms, and air changes per hour (ACH) were calculated. The number of SARS-CoV-2 cases for each room was collected over 20 months.

Results
97% of rooms had an estimated ACH ≤4.0, with 7% having CO2 levels ≥2,000 ppm for up to 3 hours per school day. A statistically significant correlation was found between the time that a room had CO2 levels ≥1,000 ppm and SARS-CoV-2 PCR tests normalized to room occupancy, accounting for 43% of the variance. No statistically significant correlation was found for room ACH and per-room SARS-CoV-2 cases. Rooms with ventilation systems using MERV-13 filters had lower SARS-CoV-2-positive PCR counts. These findings led to ongoing efforts to upgrade the ventilation systems in this community-engaged research project.

Conclusions
There was a statistically significant correlation between the total time of room CO2 concentrations ≥1,000 and SARS-CoV-2 cases in an IDD school. Merv-13 filters appear to decrease the incidence of SARS-CoV-2 infection. This research partnership identified areas for improving in-school ventilation.
Sleep duration time and human papillomavirus infection risk: The U-shaped relationship revealed by NHANES data
Authors: Hu Huangyu , Wu Yue , Zhao Min , Liu Jiaqi , Xie Ping 
Published: April 2024

Purpose
This study aims to investigate the relationship between sleep factors (sleep duration time [SDT] and obstructive sleep apnea [OSA]) and human papillomavirus (HPV)/high-risk HPV(HR-HPV) infection, utilizing data from the National Health and Nutrition Examination Survey (NHANES).

Methods
We conducted a cross-sectional analysis using NHANES data, focusing on SDT and OSA’s association with HPV/HR-HPV infection. The primary statistical methods included weighted multivariate linear regression and logistic regression to assess the association between SDT, OSA, and HPV/HR-HPV infection. The study employed restricted cubic splines (RCS) for evaluating potential non-linear relationships between SDT and HPV/HR-HPV infection. Subgroup analyses were conducted. Interaction terms were used to examine the heterogeneity in associations across different subgroups.

Results
The study identified a U-shaped relationship between SDT and HPV infection. Specifically, 7 hours of sleep was associated with the lowest risk of HPV infection. In comparison, SDT less than 7 hours resulted in a 26.3% higher risk of HPV infection (Odds Ratio [OR] = 1.26, 95% Confidence Interval [CI]: 1.029, 1.549), and more than 9 hours of sleep showed a 57.4% increased risk (OR = 1.574, 95% CI: 1.116, 2.220). The relationship between SDT and HR-HPV infection was significant in the first two models, but not in the fully adjusted model. No significant interaction was found between sleep duration and other covariates. There was no association between OSA and HPV/HR-HPV infection.

Conclusion
The study underscores the complex relationship between sleep duration and HPV infection risk, suggesting both very short and very long sleep durations may increase HPV infection likelihood. The findings highlight the need for further research to explore the biological mechanisms underpinning this association and to consider broader population groups and more precise sleep assessment methods in future studies.
Burden of undernutrition among under-five Bengali children and its determinants: Findings from Demographic and Health Surveys of Bangladesh and India
Authors: Kundu Ramendra Nath , Hossain Md. Golam , Haque Md. Ahshanul , Mahumud Rashidul Alam , Pal Manoranjan , Bharati Premananda 
Published: April 2024

Background
Globally, undernutrition is the leading cause of mortality among under-five children. Bangladesh and India were in the top ten countries in the world for under-five mortality. The aim of the study was to investigate the nutritional status of Bengali under-five children.

Methods
Data on 25938 under-five children were retrieved from the Bangladesh Demographic and Health Survey 2017–18 (BDHS) and the National Family Health Survey of India 2015–16 (NFHS-4). Stunting, wasting, underweight and thinness were considered to understand the nutritional status of under-five children. Binary logistic regression was used to identify associated factors of undernutrition among children.

Results
Over one-quarter of Bengali under-five children were found to be suffering from the problem of stunting (31.9%) and underweight (28.1%), while other nutritional indicators raised serious concern and revealed inter-country disparities. In the cases of wasting, underweight and thinness, the mean z-scores and frequency differences between Bangladesh and India were significant. The nutritional status of Bengali under-five children appeared to have improved in Bangladesh compared to India. Child undernutrition had significant relations with maternal undernutrition in both countries. Girls in Bangladesh had slightly better nutritional status than boys. In Bangladesh, lack of formal education among mothers was a leading cause of child undernutrition. Stunting and underweight coexist with low household wealth index in both counties.

Conclusions
The research revealed that various factors were associated with child undernutrition in Bengalis. It has been proposed that programmes promoting maternal education and nutrition, along with household wealth index be prioritised. The study recommends that the Governments of Bangladesh and India should increase the budget for health of children so as to reach the sustainable development goals.
Artistic Representation of Gender Nonconforming Female Bodies in Social Media: A Study of Select Indian Graphic Artists on Instagram
Authors: Bose Aratrika , Tanupriya  , Singh Anuja 
Published: April 2024

Abstract
The study critically examines gender nonconforming female identities via their sexualized representations through artistic imagination on Instagram. Instagram representation becomes a ‘political act’ where this visual subversion allows the queer to reclaim their non-binary identity and thus articulate their choices through their body. The digital graphic art taken under study is select images from the Instagram pages of Indian artists “artwhoring,” “aorists,” and “sayartic.” The research study examines the question of an ideal hegemonic femininity perpetuated by the rhetoric of Indian heteronormative patriarchal assertions. It analyses select images that defy hegemonic femininity and gender binary by embodying an amalgamation of masculinity and femininity and lesbian desire which forms an act of subversion. The methodology of critical discourse analysis is employed to study Instagram art and the critical frameworks of the fantasy female body, and the notion of heteropatriarchal femininity. In conclusion, the study discusses the treatment of female gender non-conforming bodies, their appearance, lesbian desire, and body image. Such transgressive depiction of bodies successfully situates the female body beyond the dichotomy of masculinity and femininity.
Tax Compliance Actions by Tax Authorities and Voluntary Compliance with Tax Obligations by Individual Taxpayers
Authors: Bezerra Thales Vinícius Santiago , Oliveira Oderlene Vieira de , Souza Lucas Lopes Ferreira de 
Published: April 2024

Research objective: Tax compliance actions aim to improve the relationship between the tax authorities and taxpayers, increasing voluntary compliance with tax obligations and reducing administrative and judicial litigation. In this sense, the defined objective was to analyze whether tax compliance actions increase voluntary compliance with tax obligations.
Methodology: Thus, a quantitative approach was used, through analysis of latent classes, carried out on the baseed on longitudinal data from the Federal Revenue, with 531 individual taxpayers, related to compliance action.
Results: After the action, it was found that the taxes owed had a statistically significant increase and the tax gap was increasingly reduced between 2015 and 2018, indicating that the implemented tax compliance actions were effective in promoting voluntary compliance with tax obligations by taxpayers. In addition, the action also presented advantages to taxpayers, since, when there is a spontaneous regularization, there is less possibility of facing a tax procedure, as well as a reduction in administrative costs and the amount of litigation.
Practical and theoretical contributions: The practical contributions are aimed at enhancing future tax compliance initiatives carried out by Federated Entities. Furthermore, the theoretical contribution utilizes the Slippery Slope Model, which illustrates an upsurge in voluntary compliance with tax obligations following a compliance action, attributed to heightened authority and confidence in the tax regulatory body. As a result, this theoretical contribution underscores the significance of the Slippery Slope Model in comprehending taxpayer behavior and in devising more efficient tax compliance strategies.
Into the Negative (Space): Images of War Across Generations in Portugal and Guinea-Bissau. Death is Not the End
Authors: Barroca Daniel 
Published: April 2024

Abstract
I compare a photo album of the war in former Portuguese Guinea that I found in my home when I was a child with a collection of writings by Victor Bor, a healer and diviner whom I met in southern Guinea-Bissau who was a guerrilla during that country’s war of liberation and who was possessed by a vision that the Balanta people call Kyangyang [The Shadow]. I discuss the visuality and tactility of these two complex assemblages of images as tangible negative spaces that capture and shape the gaze. How do certain images have the power to enthrall, to trap the viewer? How can they intoxicate and mobilize into gang murder in a wartime setting? At the same time, I discuss the layers and characters that the gaze assumes in order for someone to create these images, and how they materialize a kind of exchange between generations. What is it that crosses the gaze of a previous generation through its images of violence? Yet, in parallel, there is the stunning effect of looking at shocking images of war, as opposed to being stunned by visions of lights and explosions that compel shocking actions in a post-war environment.
Does an episode of diabetic ketoacidosis affect thyroid function tests in pediatric patients?
Authors: Atakul Gülhan , Korkmaz Huseyin Anıl , Gönüllü Ahmet , Sandal Özlem Saraç , Köprülü Özge , Uyar Nilüfer , Karaaslan Utku , Apa Hurşit , Ağın Hasan , Özkan Behzat 
Published: April 2024

Abstract

Objectives
The aim of our study was to investigate the changes in thyroid hormone levels during and after acute metabolic disorder in patients with diabetic ketoacidosis (DKA).

Methods
Eighty five patients diagnosed with DKA were included in the study. Patients with control thyroid function test (TFT) values at admission (the first blood sample) and 1 month later were included in the study. Thyroid function tests obtained during diabetic ketoacidosis and at the first month follow-up were compared. Euthyroidism and euthyroid sick syndrome were defined and grouped according to current guidelines. The mild and moderate groups, according to DKA classification, were combined and compared with the severe group.

Results
A significant increase was observed between the first admission and the control TFT values 1 month later. However, there was no significant difference found in TFT between mild/moderate and severe groups taken at the time of DKA. Difference between two groups, euthyroid sick syndrome and euthyroid, was examined and the result that was different from the literature was the difference between TSH levels. We found that low FT4 levels were associated with higher HgbA1c, although the correlation was weak.

Conclusions
Thyroid hormone levels may not reflect a thyroid disease during severe DKA attack. Therefore, it is unnecessary to check thyroid function tests.
Crystal structure of poly[μ10-4,4′-methylene-bis(oxy)benzoatodipotassium], C15H10K2O6
Authors: Wu Ting T. , Gu Si N. , Ou Zhi Y. , Nie Ting Y. , Liu Yang 
Published: April 2024

Abstract
C15H10K2O6, orthorhombic, Pna21 (no. 33), a = 11.4410(13) Å, b = 3.9881(5) Å, c = 32.465(4) Å, V = 1481.3(3) Å3, Z = 4, R
gt(F) = 0.0356, wR
ref(F
2) = 0.0918, T = 296.15 K.
Experimental research of paraffin deposition with flow loops
Authors: Gao Chang Hong 
Published: April 2024

Abstract
Wax/paraffin deposition in production wells and oil pipelines is a major challenge for oil production. Extensive research has been conducted to improve understanding of this process. This paper presents a review of experimental work carried out with flow loops. Previous research investigated paraffin deposition process under the influences of temperature, flow rate/velocity, shear stress, water fraction, gas phase, pipe material, asphaltene concentration, and chemical inhibitors. Test results reveal that temperature and shear stress have significant impacts on wax deposition. Limited research has been conducted on wax deposition under multiphase flow. Even though more than 20 years of efforts have been spent on wax deposition studies, unfortunately we have not fully understood this phenomenon.
A molecular mechanics implementation of the cyclic cluster model
Authors: Samaniego-Rojas Juan Diego , Gaumard Robin , Alejandre José , Mineva Tzonka , Geudtner Gerald , Köster Andreas M. 
Published: April 2024

Abstract
The implementation of the cyclic cluster model (CCM) for molecular mechanics is presented in the framework of the computational chemistry program deMon2k. Because the CCM is particularly well-suited for the description of periodic systems with defects, it can be used for periodic QM/MM approaches where the non-periodic QM part is treated as a defect in a periodic MM surrounding. To this end, we present here the explicit formulae for the evaluation of the Ewald sum and its first- and second-order derivatives as implemented in deMon2k. The outlined implementation was tested in molecular dynamics (MD) simulations and periodic structure optimization calculations. MD simulations of an argon system were carried out using the Nosé-Hoover chain (NHC) thermostat and the Martyna-Tobias-Klein (MTK) barostat to control the temperature and pressure of the system, respectively. For the validation of CCM structure optimization a set of molecular crystals were optimized using the Ewald method for the evaluation of the electrostatic interactions. Two optimization procedures for the determination of the atomic positions and CCM cell parameters were tested. Our results show that the simultaneous optimization of the atomic positions and cell parameters is most efficient.
A computational characterization of N-heterocyclic carbenes for catalytic and nonlinear optical applications
Authors: Alauddin Mohammad , Islam Mazharul M. 
Published: April 2024

Abstract
Very recently, N-heterocyclic carbenes (NHCs) have found a wide range of applications in the fields of catalysis and nonlinear optics. Herein, we have employed 1,3-bis-(1(S)-benzyl)-4,5-dihydro-imidazol-based carbene as a reference molecule and substituted one H atom from each CH2 of the benzyl groups in both sides by CH3, NH2, and CF3 to study the thermodynamic and opto-electronic properties of NHCs theoretically. It was observed that the enthalpy (H), Gibb’s free energy (G), specific heat capacity (C
v), and entropy (S) increase significantly in the presence of the electron-withdrawing groups compared to the electron-donating groups. The IR active in-plane bending vibrations of the CH (NHC) group are shifted to the higher frequency region for the considered substituted molecules compared to the reference carbene. The analysis of the electronic properties shows that the CH3-substituted carbene is more reactive for catalytic activities compared to other NHCs. The calculated nonlinear optical (NLO) properties reveal that the NH2-substituted NHC has the largest hyperpolarizability value whereas the CH3-substituted NHC has the largest dipole moment and polarizability among all, making them potential candidates for the development of NLO materials.
From Cs[C2N3] to Cs3[C6N9] – a thermal and structural investigation
Authors: Reckeweg Olaf , DiSalvo Francis J. , Dinnebier Robert E. , Funk Christian , Schleid Thomas 
Published: April 2024

Abstract
Cesium dicyanamide Cs[C2N3] (≡ Cs[N(CN)2] or Cs[dca]) was obtained by a metathesis reaction in form of transparent colorless platelets. The results of single-crystal X-ray structure measurements and refinements (C2/c, Z = 8) with the monoclinic cell parameters a = 932.31(8), b = 1274.67(9), c = 824.94(7) pm, β = 110.803(3)° at −70 °C and a = 939.59(7), b = 1281.58(8), c = 827.57(6) pm, β = 110.610(3)° at 20 °C corroborate earlier results for this compound. The Raman and IR spectra of Cs[C2N3] are presented for the first time and the result compares well with those of NaCs2[C2N3]3. The heat-driven cyclotrimerization process of Cs[C2N3] was studied by thermal analyses (DSC) and temperature-dependent X-ray powder diffraction methods. At 370 °C, its trimerization product Cs3[C6N9] is formed, crystallizing in the orthorhombic space group Pbam with the cell parameters a = 3043.0(3), b = 1052.4(1) and c = 415.21(4) pm for Z = 4. The IR spectrum of this cesium tricyanomelaminate (Cs3[C6N9] or Cs3[TCM]) is presented, but a well-resolved Raman spectrum could not be acquired owing to fluorescence phenomena. An overview about the cyclotrimerization reactions of all pseudo-binary alkali-metal dicyanamides (A[C2N3]) to their corresponding tricyanomelaminates (A
3[C6N9]) with A = Li–Cs gives a basis for a discussion of the different thermal and structural characteristics.
NEOMANAGEMENT, EL LADO OSCURO DE LAS ORGANIZACIONES Y EL CONFLICTO TRABAJO-FAMILIA: REFLEXIONES CRÍTICAS Y PROPUESTAS DE LÍNEAS DE INVESTIGACIÓN
Authors: Jiménez Figueroa Andrés , Gómez Urrutia Verónica 
Published: April 2024

En este trabajo se examinan los alcances conceptuales y prácticos de una nueva forma de gestión empresarial denominada por algunos autores como neomanagment. Desde la perspectiva de esta filosofía de trabajo, se realiza una reflexión crítica a la situación actual de la gestión organizacional a la luz del impacto de los cambios propios en la concepción del trabajo humano. En este trabajo se examina críticamente la propuesta de estudio de los fenómenos presentes en el denominado “lado oscuro de la organización”. De acuerdo a Linstead, Maréchal y Griffin (2014), se tiende a ignorar los elementos éticos, políticos e ideológicos presentes en las organizaciones al privilegiar paradigmas teóricos sin visualizar las consecuencias disfuncionales del comportamiento organizacional. Desde la perspectiva del cuestionamiento de los modelos existentes en la temática, se propone una revisión metodológica de investigación que incorpore los aportes derivados de enfoque marxistas, post-marxistas y postcoloniales. Se analizan las implicancias prácticas de esta nueva perspectiva que considera problemas presentes en el comportamiento organizacional, que tradicionalmente han sido obviados en las teorías organizacionales. Se concluye la necesidad de fomentar una actitud crítica, ética y renovada visualizando las necesidades organizacionales, a través de una lectura sistemática de los cambios que están por venir.
La comunicación como eje articulador en la interpretación del patrimonio natural y cultural
Authors: Orellana Mcbride Arlyn Estefanía , Aguilera Aguirre Daniela Belén , Villar Castillo María del Pilar , Salfate Kastner Bastián Patricio 
Published: April 2024

En la presente investigación se abordan cuáles son los elementos de la comunicación social presentes en la interpretación del patrimonio natural y cultural de la Reserva Pingüino de Humbolt (Región de Coquimbo), así como la comprensión sistémica de su relación para la entrega exitosa del mensaje. Por lo tanto, se tiene en consideración lo que significa una reserva nacional en una localidad donde la mayoría de sus habitantes tienen como sustento el turismo y la pesca artesanal, bases del desarrollo de la localidad, como también, las fuentes de sus oportunidades. Los objetivos son analizar y comprender la relación entre el territorio, en el que confluyen el patrimonio natural y el cultural, con la condición de bienestar de una comunidad y el rol de la comunicación en esta relación simbiótica. Existe una necesidad urgente de desarrollar capacidades científicas, técnicas e institucionales que originen un entendimiento básico capaz de planificar las medidas adecuadas en relación al cuidado y preservación de la biodiversidad. Y, añadimos, sin comunicación de las mismas, no es posible conseguir los objetivos determinados.