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result(s) for
"Case, Jonathan P."
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Responding to Online Toxicity: Which Strategies Make Others Feel Freer to Contribute, Believe That Toxicity Will Decrease, and Believe That Justice Has Been Restored?
When we encounter toxic comments online, how might individual efforts to reply to those comments improve others’ experiences conversing in that forum? Is it more helpful for others to publicly, but benevolently (with a polite tone, demonstrated understanding of the original comment, and empathy for the commenter; Young Reusser et al., 2021), correct the post? Is going along with or joking along with the commenter in a benevolent way helpful? Or is retaliating – returning toxicity for toxicity – the best strategy? Using real Reddit conversation pairs – a toxic comment followed by a reply – as stimuli, we conducted a pilot study (n = 126 participants) and pre-registered experiment (n = 1357 participants) investigating the impact of three kinds of replies to online toxicity (benevolent correction, benevolent going-along, or retaliation) on observers’ self-reported freedom to contribute to the conversation, their belief that the toxicity will be reduced, and their overall impression that justice has been restored. We found evidence that benevolently correcting the toxicity helped participants feel freer to contribute than retaliating against it. Benevolently correcting was also seen as the best option for dissuading the toxicity and restoring justice. These findings suggest that treating toxic commenters with empathy, understanding, and politeness while correcting their toxicity can be a useful strategy for online bystanders who want to intervene to improve the health of online discourse. Preregistered Stage 1 protocol: https://osf.io/hfjnb (date of in-principle acceptance: 01/23/2023).
Journal Article
Disputation and interruption: Truth, trinity and the death of Christ in Wolfhart Pannenberg and Eberhard Juengel
by
Case, Jonathan P
in
Theology
1995
For both Pannenberg and Juengel the death of Christ has an integral role to play in instantiating in the life of God the critical moment necessary to their respective conceptions of truth. For Pannenberg a claim's capacity for truth lies in its ability to be disputed or contested. Some sort of confirmation must follow if the claim is to be judged true, but even this confirmation is open to subsequent challenge. Truth is hence a historical process, only the end of which will bring about a definitive conclusion. Given this understanding of truth, the death of Christ on the cross is to be understood as a disputation to the deity of God, since the Father's lordship is dependent upon the Son, and God's lordship is not external to God's deity. In the resurrection of Jesus the Holy Spirit confirms Jesus and his claims about the Father's lordship, but the confirmation of this claim remains open to challenge by history. As the events in the economy of salvation are constitutive for God's eternal identity, we may infer the intratrinitarian relations from them. For Juengel, truth is approached phenomenologically, by attending to the event of interruption in our lives which occurs when we are apprehended by an external reality. Our self-continuity is interrupted and if this interruption can be assimilated an enhancement of our lives takes place in which new possibilities for being emerge. Considered in this light, Christ is the \"two-fold\" interruption, in whom God draws closer to us than we are able to ourselves, and in whom God has allowed his own life to be interrupted by our sin and death. The Holy Spirit in the resurrection reveals that such an interruption did not end in the termination of God's existence, but that the nothingness of death is taken up into God's differentiated life. We must distinguish God's eternity and our time in the event of this interruption, while understanding them to be more closely related than ever. Further, on account of this story, we must understand the correspondence which obtains between immanent and economic trinity as metaphorical.
Dissertation
Solar Wind Electrons Alphas and Protons (SWEAP) Investigation: Design of the Solar Wind and Coronal Plasma Instrument Suite for Solar Probe Plus
by
Taylor, Ellen R.
,
McFadden, James P.
,
Brodu, Etienne
in
Acceleration
,
Aerospace Technology and Astronautics
,
Analyzers
2016
The Solar Wind Electrons Alphas and Protons (SWEAP) Investigation on Solar Probe Plus is a four sensor instrument suite that provides complete measurements of the electrons and ionized helium and hydrogen that constitute the bulk of solar wind and coronal plasma. SWEAP consists of the Solar Probe Cup (SPC) and the Solar Probe Analyzers (SPAN). SPC is a Faraday Cup that looks directly at the Sun and measures ion and electron fluxes and flow angles as a function of energy. SPAN consists of an ion and electron electrostatic analyzer (ESA) on the ram side of SPP (SPAN-A) and an electron ESA on the anti-ram side (SPAN-B). The SPAN-A ion ESA has a time of flight section that enables it to sort particles by their mass/charge ratio, permitting differentiation of ion species. SPAN-A and -B are rotated relative to one another so their broad fields of view combine like the seams on a baseball to view the entire sky except for the region obscured by the heat shield and covered by SPC. Observations by SPC and SPAN produce the combined field of view and measurement capabilities required to fulfill the science objectives of SWEAP and Solar Probe Plus. SWEAP measurements, in concert with magnetic and electric fields, energetic particles, and white light contextual imaging will enable discovery and understanding of solar wind acceleration and formation, coronal and solar wind heating, and particle acceleration in the inner heliosphere of the solar system. SPC and SPAN are managed by the SWEAP Electronics Module (SWEM), which distributes power, formats onboard data products, and serves as a single electrical interface to the spacecraft. SWEAP data products include ion and electron velocity distribution functions with high energy and angular resolution. Full resolution data are stored within the SWEM, enabling high resolution observations of structures such as shocks, reconnection events, and other transient structures to be selected for download after the fact. This paper describes the implementation of the SWEAP Investigation, the driving requirements for the suite, expected performance of the instruments, and planned data products, as of mission preliminary design review.
Journal Article
Th1 polarization defines the synovial fluid T cell compartment in oligoarticular juvenile idiopathic arthritis
by
Hoyt, Kacie J.
,
Nigrovic, Peter A.
,
Hausmann, Jonathan S.
in
Adolescent
,
Arthritis
,
Arthritis, Juvenile - genetics
2021
Oligoarticular juvenile idiopathic arthritis (oligo JIA) is the most common form of chronic inflammatory arthritis in children, yet the cause of this disease remains unknown. To understand immune responses in oligo JIA, we immunophenotyped synovial fluid T cells with flow cytometry, bulk RNA-Seq, single-cell RNA-Seq (scRNA-Seq), DNA methylation studies, and Treg suppression assays. In synovial fluid, CD4+, CD8+, and γδ T cells expressed Th1-related markers, whereas Th17 cells were not enriched. Th1 skewing was prominent in CD4+ T cells, including Tregs, and was associated with severe disease. Transcriptomic studies confirmed a Th1 signature in CD4+ T cells from synovial fluid. The regulatory gene expression signature was preserved in Tregs, even those exhibiting Th1 polarization. These Th1-like Tregs maintained Treg-specific methylation patterns and suppressive function, supporting the stability of this Treg population in the joint. Although synovial fluid CD4+ T cells displayed an overall Th1 phenotype, scRNA-Seq uncovered heterogeneous effector and regulatory subpopulations, including IFN-induced Tregs, peripheral helper T cells, and cytotoxic CD4+ T cells. In conclusion, oligo JIA is characterized by Th1 polarization that encompasses Tregs but does not compromise their regulatory identity. Targeting Th1-driven inflammation and augmenting Treg function may represent important therapeutic approaches in oligo JIA.
Journal Article
Early commitment facilitates optimal choice by pigeons
by
Zentall, Thomas R.
,
Case, Jacob P.
,
Berry, Jonathan R.
in
Addictive behaviors
,
Animal cognition
,
Animals
2017
Prior commitment has been found to facilitate choice of a larger later reward (e.g., healthy living) and avoid the impulsive choice of the smaller immediate reward (e.g., smoking, drug taking). In this research with pigeons, we investigated the
ephemeral choice task
in which pigeons are given a choice between two alternatives, A and B, with similar reinforcement provided for each; however, if they choose A, they can also choose B, whereas if they choose B, A is removed. Thus, choosing A gives them two rewards, whereas choosing B gives them only one. Paradoxically, pigeons actually show a preference for B, the suboptimal alternative. We tested the hypothesis that pigeons made suboptimal choices because they were impulsive. To reduce impulsivity, we required the pigeons to make their initial choice 20 s before receiving the first reward. We found that requiring the pigeons to make a
prior commitment
encouraged them to choose optimally. The control group, for which the reward was provided immediately following initial choice, continued to choose suboptimally. The results confirm that requiring animals to make a prior commitment can facilitate the development of optimal choice. Furthermore, they may help explain why, without prior commitment, impulsive species, such as primates and pigeons have difficulty with this task, whereas presumably less impulsive species, such as wrasse fish and under some conditions parrots, are able to choose optimally even without prior commitment.
Journal Article
Electrical, Thermal, and Mechanical Characterization of Novel Segmented-Leg Thermoelectric Modules
by
Wu, Chun-I
,
Hendricks, Terry
,
Hogan, Timothy P.
in
Applied sciences
,
Characterization and Evaluation of Materials
,
Chemistry and Materials Science
2011
In this paper we report on the electrical, thermal, and mechanical characterization of segmented-leg PbTe-based thermoelectric modules. This work featured a thermoelectric module measurement system that was constructed and used to measure 47-couple segmented thermoelectric power generation modules fabricated by Tellurex Corporation using
n
-type Bi
2
Te
3−
x
Se
x
to Ag
0.86
Pb
19+
x
SbTe
20
legs and
p
-type Bi
x
Sb
2−
x
Te
3
to Ag
0.9
Pb
9
Sn
9
Sb
0.6
Te
20
legs. The modules were measured under vacuum with hot-side and cold-side temperatures of approximately 670 K and 312 K, respectively. In addition, the measurements on the PbTe-based materials are compared with measurements performed on Bi
2
Te
3
reference modules. Efficiency values as high as 6.56% were measured on these modules. In addition to the measurement system description and the measurement results on these modules, infrared images of the modules that were used to help identify nonuniformities are also presented.
Journal Article
Insights into the metamorphic history and origin of flake graphite mineralization at the Graphite Creek graphite deposit, Seward Peninsula, Alaska, USA
by
Case, George N. D
,
Johnson, Craig A
,
Marsh, Jeffrey H
in
Biotite
,
Carbon
,
Carbonaceous materials
2023
Graphite Creek is an unusual flake graphite deposit located on the Seward Peninsula, Alaska, USA. We present field observations, uranium-lead (U–Pb) monazite and titanite geochronology, carbon (C) and sulfur (S) stable isotope geochemistry, and graphite Raman spectroscopy data from this deposit that support a new model of flake graphite ore genesis in high-grade metamorphic environments. The Graphite Creek deposit is within the second sillimanite metamorphic zone of the Kigluaik Mountains gneiss dome. Flake graphite, hosted in sillimanite-gneiss and quartz-biotite paragneiss, occurs as disseminations and in sets of very high grade (up to 50 wt.% graphite), semi-massive to massive graphite lenses 0.2 to 1 m wide containing quartz, sillimanite, inclusions of garnet porphyroblasts, K-feldspar, and tourmaline. Restitic garnet, sillimanite, graphite, and biotite accumulations indicate a high degree of anatexis and melt loss. Strong yttrium depletion in monazite, high europium ratios (Eu/Eu*), and excursions of high strontium and thorium concentrations are consistent with biotite dehydration melting. Monazite and titanite U–Pb ages record peak metamorphism from ~ 97 to 92 million years ago (Ma) and a retrograde event at ~ 85 Ma. Raman spectroscopy confirms the presence of carbonaceous material and highly ordered, crystalline graphite. Graphite δ13CVPDB values of − 30 to − 12‰ and pyrrhotite δ34SVCDT values of − 14 to 10‰ are consistent with derivation from organic carbon and sulfur in sedimentary rocks, respectively. These data collectively suggest that formation of massive graphite lenses occurred approximately synchronously with high-temperature metamorphism and anatexis of a highly carbonaceous pelitic protolith. Melt extraction and fluid release associated with anatexis were likely crucial for concentrating graphite. High-temperature, graphitic migmatite sequences within high-strain shear zones may be favorable for the occurrence of high-grade flake graphite deposits.
Journal Article
Disordered T cell-B cell interactions in autoantibody-positive inflammatory arthritis
by
Hoyt, Kacie J.
,
Lam, Ki Pui
,
Nigrovic, Peter A.
in
Antibodies
,
Antinuclear antibodies
,
Arthritis
2023
T peripheral helper (Tph) cells, identified in the synovium of adults with seropositive rheumatoid arthritis, drive B cell maturation and antibody production in non-lymphoid tissues. We sought to determine if similarly dysregulated T cell-B cell interactions underlie another form of inflammatory arthritis, juvenile oligoarthritis (oligo JIA). Clonally expanded Tph cells able to promote B cell antibody production preferentially accumulated in the synovial fluid (SF) of oligo JIA patients with antinuclear antibodies (ANA) compared to autoantibody-negative patients. Single-cell transcriptomics enabled further definition of the Tph gene signature in inflamed tissues and showed that Tph cells from ANA-positive patients upregulated genes associated with B cell help to a greater extent than patients without autoantibodies. T cells that co-expressed regulatory T and B cell-help factors were identified. The phenotype of these Tph-like Treg cells suggests an ability to restrain T cell-B cell interactions in tissues. Our findings support the central role of disordered T cell-help to B cells in autoantibody-positive arthritides.
Journal Article
Fishy business in Seattle: Salmon mislabeling fraud in sushi restaurants vs grocery stores
by
Al-awadi, Asmaa A.
,
Dean, Sara M.
,
Keith, Lauryn A.
in
Agricultural economics
,
Animals
,
Aquaculture
2024
Salmon is the most commonly consumed finfish in the United States of America (USA), and the mislabeling of salmon is a widespread problem. Washington State is a global supplier of wild-caught Pacific salmon and local salmon mislabeling results in substantial economic, ecological, and cultural impacts. Previous studies in Washington State identified high levels of mislabeled salmon in both markets and restaurants, resulting in local legislation being passed that requires proper labeling of salmon products, including identifying it as wild-caught or farm-raised. To investigate whether recent legislative efforts reduced salmon fraud rates, we acquired and genetically barcoded salmon samples from 67 grocery stores and 52 sushi restaurants in Seattle, Washington. DNA from each salmon sample was isolated and the cytochrome c oxidase gene was sequenced to identify the fish species. Our study, conducted from 2022–2023, revealed 18% of salmon samples from both grocery stores and sushi restaurants were mislabeled. While most samples were acquired during the fall months when wild salmon is in season, we still observed a high salmon mislabeling rate. Unlike grocery stores, Seattle sushi restaurants often sold farmed salmon mislabeled as wild salmon. Specifically, substitutions of vendor-claimed wild salmon with farmed salmon occurred in 32.3% of sushi restaurant samples compared to 0% of grocery store samples. Additionally, occurrences of wild salmon being substituted with another salmon species (wild or farmed) occurred in 38.7% of sushi restaurant samples compared to 11.1% of grocery store samples. All salmon substitutions in sushi restaurants harmed the customer financially as they were given a cheaper market-priced fish. In grocery stores, however, we did not detect significant economic loss to customers due to salmon mislabeling. Taken together, it is important to continue to develop and enforce legislation in Washington State that prevents salmon fraud and promotes ecologically sustainable fishing practices.
Journal Article
DNA methylation meta-analysis reveals cellular alterations in psychosis and markers of treatment-resistant schizophrenia
2021
We performed a systematic analysis of blood DNA methylation profiles from 4483 participants from seven independent cohorts identifying differentially methylated positions (DMPs) associated with psychosis, schizophrenia, and treatment-resistant schizophrenia. Psychosis cases were characterized by significant differences in measures of blood cell proportions and elevated smoking exposure derived from the DNA methylation data, with the largest differences seen in treatment-resistant schizophrenia patients. We implemented a stringent pipeline to meta-analyze epigenome-wide association study (EWAS) results across datasets, identifying 95 DMPs associated with psychosis and 1048 DMPs associated with schizophrenia, with evidence of colocalization to regions nominated by genetic association studies of disease. Many schizophrenia-associated DNA methylation differences were only present in patients with treatment-resistant schizophrenia, potentially reflecting exposure to the atypical antipsychotic clozapine. Our results highlight how DNA methylation data can be leveraged to identify physiological (e.g., differential cell counts) and environmental (e.g., smoking) factors associated with psychosis and molecular biomarkers of treatment-resistant schizophrenia.
Journal Article