Faculty Open Access Articles

Permanent link for this collectionhttps://hdl.handle.net/2022/30149

This collection contains articles made publicly available under the IU Bloomington Faculty Open Access Policy. The IU Libraries Scholarly Communication Department facilitates the deposit of articles into this collection.

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The American Petroleum Institute: Sponsored Motion Pictures in the Service of Public Relations
(2021) Waller, Gregory A.
Measurements of Total OH Reactivity During CalNex‐LA
(2021) Hansen, R. F.; Griffith, S. M.; Dusanter, S.; Gilman, J. B.; Graus, M.; Kuster, W. C.; Veres, P. R.; de Gouw, J. A.; Warneke, C.; Washenfelder, R. A.; Young, C. J.; Brown, S. S.; Alvarez, S. L.; Flynn, J. H.; Grossberg, N. E.; Lefer, B.; Rappenglueck, B.; Stevens, Philip S
Total OH reactivity was measured during the California Research at the Nexus of Air Quality and Climate Change field campaign at the Pasadena ground site using a turbulent flow tube reactor with laser-induced fluorescence detection of the OH radical. Collocated measurements of volatile organic compounds (VOCs), inorganic species, and meteorological parameters were made and used to calculate the total OH reactivity, which was then compared to the measured values. An analysis of the OH reactivity measurements finds that although the measured reactivity correlated well with the calculated reactivity, the measurements were consistently greater than the calculations for all times during the day, with an average missing OH reactivity of 8–10 s−1, accounting for approximately 40% of the measured total OH reactivity. An analysis of correlations with both anthropogenic tracers of combustion and oxygenated VOCs as well as air trajectories during the campaign suggest that the missing OH reactivity was likely due to a combination of both unmeasured local emissions and unmeasured oxidation products transported to the site. Approximately 50% of the missing OH reactivity may have been due to emissions of unmeasured volatile chemical products, such as pesticides, cleaning agents, and personal care products.
Quantifying Nitrous Acid Formation Mechanisms Using Measured Vertical Profiles During the CalNex 2010 Campaign and 1D Column Modeling
(2021) Tuite, Katie; Thomas, Jennie L.; Veres, Patrick R.; Roberts, James M.; Stevens, Philip S; Griffith, Stephen M.; Dusanter, Sebastien; Flynn, James H.; Ahmed, Shaddy; Emmons, Louisa; Kim, Si‐Wan; Washenfelder, Rebecca; Young, Cora; Tsai, Catalina; Pikelnaya, Olga; Stutz, Jochen
Nitrous acid (HONO) is an important radical precursor that can impact secondary pollutant levels, especially in urban environments. Due to uncertainties in its heterogeneous formation mechanisms, models often under predict HONO concentrations. A number of heterogeneous sources at the ground have been proposed but there is no consensus about which play a significant role in the urban boundary layer. We present a new one-dimensional chemistry and transport model which performs surface chemistry based on molecular collisions and chemical conversion, allowing us to add detailed HONO formation chemistry at the ground. We conducted model runs for the 2010 CalNex campaign, finding good agreement with observations for key species such as O3, NOx, and HOx. With the ground sources implemented, the model captures the diurnal and vertical profile of the HONO observations. Primary HOx production from HONO photolysis is 2–3 times more important than O3 or HCHO photolysis at mid-day, below 10 m. The HONO concentration, and its contribution to HOx, decreases quickly with altitude. Heterogeneous chemistry at the ground provided a HONO source of 2.5 × 1011 molecules cm−2 s−1 during the day and 5 × 1010 molecules cm−2 s−1 at night. The night time source was dominated by NO2 hydrolysis. During the day, photolysis of surface HNO3/nitrate contributed 45%–60% and photo-enhanced conversion of NO2 contributed 20%–45%. Sensitivity studies addressing the uncertainties in both photolytic mechanisms show that, while the relative contribution of either source can vary, HNO3/nitrate is required to produce a surface HONO source that is strong enough to explain observations.
The Local Spillover Effect of Corporate Accounting Misconduct: Evidence from City Crime
(2021) Holzman, Eric; Miller, Brian; Williams, Brian
This study documents a spillover effect of accounting fraud by showing that after the revelation of accounting misconduct, there is an increase in financially motivated neighborhood crime (robberies, thefts, etc.) in the cities where these misconduct firms are located. We find that more visible accounting frauds (e.g., greater media attention and larger stock price declines) are more strongly associated with a future increase in financially motivated neighborhood crime. We also find that the association between fraud revelation and increased future financially motivated crime is strongest when local job markets are shallower and where local income inequality is high, consistent with adverse shocks from fraud putting pressure on local communities. Combined, our study provides evidence that the societal ramifications of corporate accounting misconduct extend beyond adversely impacting a firm's capital providers and industry peers to negatively influence the daily life of the residents in the firm's local community.
Sensitivity of Total Column Ozone to Stratospheric Sulfur Injection Strategies
(2021) Tilmes, S.; Richter, J. H.; Kravitz, Benjamin Stephen; MacMartin, D. G.; Glanville, A. S.; Visioni, D.; Kinnison, D. E.; Müller, R.
We explore the impact of different stratospheric sulfur injection strategies to counter greenhouse gas induced warming on total column ozone (TCO), including high and low altitude injections at four latitudes, equatorial injections, and using a configuration with higher vertical resolution, based on a state-of-the-art Earth system model. The experiments maintain global surface temperatures at 2020 conditions, while following the unmitigated future scenario. Within the first 10 years of the injection, we find an abrupt deepening of the Antarctic ozone hole by 8%–20% and changes up to urn:x-wiley:00948276:media:grl63028:grl63028-math-00015% for other regions and seasons. The ozone hole recovery is delayed by ∼25 to over 55 years, with the fastest recovery for low-altitude injections and slowest for equatorial injections. Mid to high-latitude TCO increases by urn:x-wiley:00948276:media:grl63028:grl63028-math-000315% in Northern Hemisphere winter and spring between 2010–2019 and 2080–2089 due to both increasing greenhouse gases and increasing sulfur injections. Implications for ecosystems need to be investigated.
HEMET: A Homomorphic-Encryption-Friendly Privacy-Preserving Mobile Neural Network Architecture
(2021) Lou, Qian; Jiang, Lei
Recently Homomorphic Encryption (HE) is used to implement Privacy-Preserving Neural Networks (PPNNs) that perform inferences directly on encrypted data without decryption. Prior PPNNs adopt mobile network architectures such as SqueezeNet for smaller computing overhead, but we find naïvely using mobile network architectures for a PPNN does not necessarily achieve shorter inference latency. Despite having less parameters, a mobile network architecture typically introduces more layers and increases the HE multiplicative depth of a PPNN, thereby prolonging its inference latency. In this paper, we propose a \textbf{HE}-friendly privacy-preserving \textbf{M}obile neural n\textbf{ET}work architecture, \textbf{HEMET}. Experimental results show that, compared to state-of-the-art (SOTA) PPNNs, HEMET reduces the inference latency by 59.3, and improves the inference accuracy by 0.4.
Does the Individual Mandate Affect Insurance Coverage? Regression Kink Evidence from the Population of Tax Returns
(2021) Lurie, Ithai Z.; Sacks, Daniel W.; Heim, Bradley
We estimate the effect of the ACA's individual mandate on insurance coverage using regression discontinuity and regression kink designs with tax return data. We have four key results. First, the actual penalty paid per uninsured month is less than half the statutory amount. Second, nonetheless, we find visually clear and statistically significant responses to both extensive margin exposure to the mandate and to marginal increases in the mandate penalty. Third, we find substantial heterogeneity in who responds; men are especially responsive. Fourth, our estimates imply fairly small quantitative responses to the individual mandate, especially in the Health Insurance Exchanges.
Observational Studies of the Effect of Medicaid on Health: Controls Are Not Enough
(2021) Freedman, Seth; Goodman-Bacon, Andrew; Hammarlund, Noah
Covariate-adjusted cross-sectional comparisons show that Medicaid patients have worse health outcomes than other patients. We evaluate the validity of this research design for estimating the causal effect of Medicaid on mortality. Even after controlling for common covariates, Medicaid patients have worse preoperative health and lower socioeconomic status than privately insured patients. Controlling for additional variables shrinks the mortality differences but still does not eliminate imbalance in other predetermined variables. These results can be explained by fairly weak assumptions about unmeasured confounders. We conclude that cross-sectional observational methods do not produce valid causal estimates of Medicaid’s mortality effects.
Applicability of a salient belief elicitation to measure abortion beliefs
(2021) Maier, Julie M.; Jozkowski, Kristen Nicole; Valdez, Danny; Crawford, Brandon Lee; Turner, Ronna C.; Lo, Wen-Juo
Objectives: Salient belief elicitations (SBEs), informed by the Reasoned Action Approach (RAA), are used to identify 3 sets of beliefs – behavioral, control, and normative – that influence attitudes toward a health behavior. SBEs ask participants about their own beliefs through open-ended questions. We adapted a SBE by focusing on abortion, which is infrequently examined through SBEs; we also included a survey version that asked participants their views on what a hypothetical woman would do if contemplating an abortion. Given these deviations from traditional SBEs, the purpose of this study was to assess if the adapted SBE was understood by participants in English and Spanish through cognitive interviewing. Methods: We examined participants' interpretations of SBE items about abortion to determine if they aligned with the corresponding RAA construct. We administered SBE surveys and conducted cognitive interviews with US adults in both English and Spanish. Results: Participants comprehended the SBE questions as intended. Participants' interpretations of most questions were also in line with the respective RAA construct. Conclusions: SBE survey questions were comprehended well by participants. We discuss areas in which SBE questions can be modified to improve alignment with the underlying RAA construct to assess abortion beliefs.
The Ecology of Exchange: The Monetization of Roman Egypt
(2021) Elliott, Colin Peter
The Egyptian experience of monetization—especially during the Roman period—subverts colonializing historiographies in which the adoption of (Western) coinage autonomously subdued passive and ‘primitive’ reciprocity and redistribution-based economies at the periphery. Many scholars now argue that cultural, religious and economic contexts directed exchange practices in Roman Egypt. This article argues that these embedding elements were themselves cultivated in a meta-context of place—namely, the fluvial geography and ecology of the Nile Valley, Delta and Fayyum Oasis. The rhythmic inundations of the Nile and Egypt’s related agricultural cycle shaped the meanings inhabitants attached to instruments of exchange, including the invading coins of Greek and Roman polities. Coinage thoroughly permeated Egyptian institutions, and yet ecologically-determined rituals, customs and traditions preserved aspects of indigenous exchange culture. Ecological forces nurtured and strengthened the cultural, economic and political forces that constrained Roman monetary imperialism. The monetization of Roman Egypt is, therefore, a critical historical case-study of broader geographic, temporal and thematic interest—one which enables scholars to better understand how ecology intersects with cultural, economic and political embeddedness.
Proximity, NIMBYism, and Public Support for Energy Infrastructure
(2020) Konisky, David M; Ansolabehere, Stephen; Carley, Sanya
The public opinion literature examining the role of proximity and not-in-my-backyard (NIMBY) attitudes in people’s judgments about energy projects has come to inconclusive findings. We argue that these mixed results are due to vast differences and significant limitations in research designs, which we mitigate through a large study (n = 16,200) of Americans’ attitudes toward energy projects. Our approach examines a diverse set of energy projects in development, explicitly compares the attitudes of individuals living in the vicinity of projects with those farther away, and includes the careful measurement of the NIMBY concept. The analyses show little evidence that proximity in general or NIMBY objections in particular are important determinants of project support. Instead, other factors are more important, including perceptions of local environmental quality, risk orientation, concern about climate change, and trust in energy companies.
Managing Precarity: Understanding Latinas' Sexual and Reproductive Care-Seeking in a Midwest Emergent Latino Community
(2021) Guerra-Reyes, Lucia; Palacios, I.; Ferstead, A.
In this qualitative interview study, we took a two-pronged approach to understand the complexities of sexual and reproductive health (SRH) care access for Latinas in an emerging Latino community (ELC). Phase 1 assessed the SRH resources available for uninsured Latinas through provider interviews. In Phase 2, we interviewed 15 Latina-identified women about their considerations for SRH care-seeking. The scant options for SRH care are focused largely on contraception and pregnancy. Providers viewed themselves as prevention-oriented and perceived Latinas did not prioritize preventive care. Women described compounding challenges and precarious conditions. Annual checkups, accessing contraception, and treating vaginal infections were identified as needs. Barriers to SRH care were enhanced in an ELC. Participants described too much paperwork and limited time as organizational barriers which aggravated others, such as language limitations and feeling embarrassed to ask questions. Further research on SRH care using a reproductive justice approach is needed in ELCs.
Bioaccessibility of Inorganic Arsenic in Rice: Probabilistic Estimation and Identification of Influencing Factors
(2021) Zhou, Zheng; Yang, Guiling; Xun, Pengcheng; Wang, Qiang; Shao, Kan
Bioaccessibility, defined as the fraction of inorganic arsenic (iAs) that becomes soluble in the GI tract and ready for absorption, is one of the determining factors that impacts the iAs exposure through rice consumption. The objective of this study is to, based on published data, quantitatively characterize the bioaccessibility of iAs in rice and identify its influencing factors. A total of 256 published papers were identified and reviewed, among which eight were selected as they provide adequate data to support the analyses of bioaccessibility and influencing factors. A meta-analysis was performed to characterize the probabilistic distribution of the bioaccessibility of iAs. A general regression analysis was performed to identify the influencing factors of the bioaccessibility. A beta distribution (a = 4.91, b = 1.85) with a mean and 90th percentile interval of 73% (43%, 95%) was estimated to adequately describe the iAs bioaccessibility in rice. The regression analysis shows that grain size (p-value < 0.001) and the inorganic-to-total proportion of arsenic (p-value < 0.001) are negatively associated with bioaccessibility, while milling status has no impact.
Arsenic exposure induces a bimodal toxicity response in zebrafish
(2021) Coral, Jason A.; Heaps, Samuel; Glaholt, Stephen P.; Karty, Jonathan A.; Jacobson, Stephen C.; Shaw, Joseph R.; Bondesson, Maria
In toxicology, standard sigmoidal concentration-response curves are used to predict effects concentrations and set chemical regulations. However, current literature also establishes the existence of complex, bimodal concentration-response curves, as is the case for arsenic toxicity. This bimodal response has been observed at the molecular level, but not characterized at the whole organism level. This study investigated the effect of arsenic (sodium arsenite) on post-gastrulated zebrafish embryos and elucidated effects of bimodal concentration- responses on different phenotypic perturbations. Six hour post fertilized (hpf) zebrafish embryos were exposed to arsenic to 96 hpf. Hatching success, mortality, and morphometric endpoints were evaluated both in embryos with chorions and dechorionated embryos. Zebrafish embryos exhibited a bimodal response to arsenic exposure. Concentration-response curves for exposed embryos with intact chorions had an initial peak in mortality (88%) at 1.33 mM arsenic, followed by a decrease in toxicity (~20% mortality) at 1.75 mM, and subsequently peaked to 100% mortality at higher concentrations. To account for the bimodal response, two distinct concentration-response curves were generated with estimated LC10 values (and 95% CI) of 0.462 (0.415, 0.508) mM and 1.69 (1.58, 1.78) mM for the ‘low concentration’ and ‘high concentration’ peaks, respectively. Other phenotypic analyses, including embryo length, yolk and peri- cardial edema all produced similar concentration-response patterns. Tests with dechorionated embryos also resulted in a bimodal toxicity response but with lower LC10 values of 0.170 (0.120, 0.220) mM and 0.800 (0.60, 0842) mM, respectively. Similarities in bimodal concentration-responses between with-chorion and dechorio- nated embryos indicate that the observed effect was not caused by the chorion limiting arsenic availability, thus lending support to other studies such as those that hypothesized a conserved bimodal mechanism of arsenic interference with nuclear receptor activation.
Sex and Gender Differences in the Susceptibility to Environmental Exposures
(2021) Silveyra, Patricia; Housseiny, Heba Al; Rebuli, Meghan E.
In the past 50 years, the number of publications on air pollution and lung disease have increased considerably, although the number of studies considering sex (a biologic factor), or gender (a social construct), has remained low and stagnant. Accumulating data from studies assessing the effects of the environment on lung health have shown direct associations of air pollution exposures with lung inflammation. Sex-specific disaggregation of data has indicated that substantial -but frequently overlooked- differences exist between men and women, highlighting the importance of sex- and gender-stratified analyses to guide the deployment of safe and effective therapeutics options for males and females. In this chapter, we present an overview of the scientific evidence on differential effects of environmental exposures in men and women. We summarize clinical studies and research using animal models aiming to elucidate sex-specific mechanisms of inflammation and toxicity from a wide range of air pollutants. Understanding these mechanisms can lead to the development of more personalized prevention efforts and better-informed environmental policies accounting for sex, gender, and hormonal status.
Effects of an 80% cigarette price increase on quit attempts, successful quitting and smoking intensity among Korean adult smokers: results from nationally representative longitudinal panel data
(2021) Lee, Boram; Seo, Dong Chul
Objectives South Korea implemented an unprecedented cigarette tax increase in 2015, raising its cigarette price by 80%. This study evaluated the extent to which the 2015 cigarette tax increase affected Korean adult smokers in terms of quit attempts, successful quitting and smoking intensity. Methods Data were drawn from a nationally representative longitudinal study, the Korean Welfare Panel Study (waves 9–12, 2014–2017). Korean adults who smoked before the 2015 cigarette tax increase comprised the sample (n=2114). We used the multiple logistic regressions to examine factors of quit attempts and successful quitting and the generalised estimating equations to estimate changes in smoking intensity among continued smokers. Results After the cigarette tax increase, 60.9% (n=1334) of baseline smokers attempted to quit and 34.7% of the attempters succeeded in quitting. The smokers aged ≥ 65 years and light smokers both attempted more (p<0.01) and succeeded more (p<0.05) in quitting than smokers aged 35–44 years and heavy smokers, respectively. The successful quitting was not significantly associated with income levels. Depressive symptoms, first cigarette use before age 19 and smoking a pack or more a day at baseline were associated with failures in quitting. Smoking intensity among continued smokers decreased after the cigarette tax increase (p<0.001), but such a decrease was not observed in light smokers, young smokers and high-income smokers. Conclusion The current study findings imply that the Korean government may consider implementing periodic increases in cigarette tax which should reflect the rate of inflation and income growth. Smoking cessation programmes need to address depressive symptoms.
Prevalence of e-cigarette use (2016 to 2018) and cigarette smoking (2012 to 2019) among U.S. adults by state: An interactive data visualization dashboard.
(2021) Kianersi, S; Zhang, Y; Rosenberg, Molly; Macy, Jon T
Opioid Use Disorder Trends from 2002 to 2017 by Cigarette Smoking Status in the United States
(2021) Parker, Maria Anne; Weinberger, A H
Introduction There have been significant increases in opioid use and opioid-related overdose deaths in the United States (US). While cigarette smoking remains disproportionately high among individuals with opioid use disorder (OUD), it is unknown whether trends in OUD differ by cigarette use. This study examined differences in OUD by smoking status and trends in OUD by smoking status over time. Methods Data were harnessed from US National Surveys on Drug Use and Health, annual cross-sectional, nationally representative samples of individuals aged 12 and older. Past-year OUD prevalences were estimated each year from 2002 to 2017 among persons with current daily, current nondaily, former, and never cigarette smoking (n = 891 548). Linear time trends of OUD were examined using logistic regression models. Results In 2017, OUD was significantly more common among persons with daily (2.6%) and nondaily (1.5%) smoking compared with those with former (0.5%) or never (0.2%) smoking. Overall, the prevalence of OUD increased between 2002 and 2017, although trends differed by smoking status. Adjusting for background characteristics, the prevalence of OUD increased significantly among individuals with daily (adjusted odds ratio [AOR] = 1.06; 95% confidence interval [CI]: 1.04, 1.07), nondaily (AOR = 1.03; 95% CI: 1.01, 1.05), and former smoking (AOR = 1.05; 95% CI: 1.02, 1.09), but decreased among those who never smoked (AOR = 0.98; 95% CI: 0.97, 0.99). Conclusions In the United States, the prevalence of OUD was higher among individuals with current cigarette smoking relative to those with former and never smoking. OUD increased among persons with current and former smoking from 2002 to 2017, in contrast to a decrease in OUD among those who never smoked. Implications OUDs are increasing in the United States and are associated with difficulty quitting cigarettes. Our data from representative national samples of US individuals showed that although OUD increased among those with both current and former smoking over time, OUD remained significantly higher among persons with current (daily and nondaily) smoking versus persons who formerly smoked cigarettes. In addition, youth with cigarette smoking had particularly high prevalences of OUDs. Cigarette smoking may be important to address alongside OUD to reduce the harmful consequences of OUD and cigarette use especially among younger individuals.
How Income Shapes Moral Judgments of Prosocial Behavior
(2021) Olson, Jenny Gin; McFerran, Brent; Morales, Andrea; Dahl, Darren
The current research extends past work on how consumers (as “observers”) view ethical choices made by others (“actors”). Using a person-centered approach to moral judgments, we show that consumers are judged differentially, based on their income, for engaging in certain prosocial behaviors. Nine studies demonstrate that engaging in the same prosocial behavior, such as volunteering, leads to different responses depending on whether the actor earns income versus receives government assistance. Consistent with our theorizing, we find that aid recipients are given less latitude in how they spend their time than those earning an income and are scrutinized to a greater degree for their choices because people believe their time would be better spent seeking employment. Consequently, the lower moral judgments of aid recipients who choose to volunteer (vs. income earners) are driven, at least in part, by the anger observers feel about the perceived misuse of time. Additional information or cues about employment efforts or work inability attenuate these judgments. Importantly, we document implications for support for federal spending on welfare programs.
Toward a robust science of suicide: Epistemological, theoretical, and methodological considerations in advancing suicidology
(2021) Abrutyn, Seth; Mueller, Anna Strassmann
Suicidology is at a crossroads, the crux of which came into plain view recently when Hjelmeland/Knizek’s critique of mainstream suicidology was followed by two ardent essays defending suicidology as it currently exists. We stake out a middle-way approach leveraging sociology’s unique disciplinary perspective to bridge the two sides to construct a robust transdisciplinary toolbox that helps suicidology advance as science and improve how we study suicide and, therefore, what we know. The essay first examines the underlying structural and cultural reasons for the talking past each other, before turning towards our own understanding of science, methods, and the study of suicide.

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