Digital Commons Network^™

The Effect Of Anterior Closing Wedge Slope-Reducing Osteotomy On Coronal Alignment-Effect Of Osteotomy Technique, Starting Point, And Degree Of Correction., James Matthew Helm, Mark Coggins, Brian Crowley, Maile Curbo, Jacob Siahaan, Alexis Aboulafia, Alfred A Mansour

Faculty, Staff and Student Publications

Background: Techniques for anterior closing wedge slope-reducing osteotomy (ACW-SRO) remain variable regarding management of the tibial tubercle and osteotomy starting point. Moreover, the potential unintended effect on coronal alignment has not yet been determined.

Purpose: To determine the effect of the ACW-SRO technique and starting point on coronal alignment in knees with an elevated posterior tibial slope (PTS).

Study design: Descriptive laboratory study.

Methods: Full-length lower extremity computed tomography scans were retrospectively reviewed in patients presenting to our level 1 trauma center to identify patients with an elevated PTS of ≥12° without secondary trauma to the lower extremity. Materialise software …

A Recipe For Disaster - Sodium Bicarbonate Overdose, Adeola A Kosoko, Amara Ogoke, Kyle Vogt

Faculty, Staff and Student Publications

Audience: Emergency medicine residents post-graduate years 1-4.

Introduction: Sodium bicarbonate is a compound found commonplace in many households and in many products. It lends itself to countless everyday uses including cooking and cleaning. Physicians prescribe sodium bicarbonate regularly both on- and off-label regularly for various ailments.1 Due to the ubiquitous way both emergency physicians and the general public use and are exposed to sodium bicarbonate, we wanted to prepare learners to identify and appropriately manage sodium bicarbonate toxicity.Obtaining a thorough history not just of medications prescribed but of significant ingestions or infusions is critical in diagnosing this toxicity. Furthermore, acute …

Efficacy And Safety Of Mechanical Thrombectomy In Distal Medium Middle Cerebral Artery Occlusion Ischemic Stroke Patients On Low-Dose Aspirin, Hamza Adel Salim, Vivek Yedavalli, Fathi Milhem, Basel Musmar, Nimer Adeeb, Motaz Daraghma, Kareem El Naamani, Nils Henninger, Sri Hari Sundararajan, Anna Luisa Kühn, Jane Khalife, Sherief Ghozy, Luca Scarcia, Benjamin Yq Tan, Robert W Regenhardt, Jeremy J Heit, Nicole M Cancelliere, Joshua D Bernstock, Aymeric Rouchaud, Jens Fiehler, Sunil Sheth, Ajit S Puri, Christian Dyzmann, Marco Colasurdo, Leonardo Renieri, João Pedro Filipe, Pablo Harker, Răzvan Alexandru Radu, Mohamad Abdalkader, Piers Klein, Thomas R Marotta, Julian Spears, Takahiro Ota, Ashkan Mowla, Pascal Jabbour, Arundhati Biswas, Frédéric Clarençon, James E Siegler, Thanh N Nguyen, Ricardo Varela, Amanda Baker, Muhammed Amir Essibayi, David Altschul, Nestor R Gonzalez, Markus A Möhlenbruch, Vincent Costalat, Benjamin Gory, Christian Paul Stracke, Constantin Hecker, Hamza Shaikh, Christoph J Griessenauer, David S Liebeskind, Alessandro Pedicelli, Andrea M Alexandre, Illario Tancredi, Tobias D Faizy, Erwah Kalsoum, Max Wintermark, Boris Lubicz, Aman B Patel, Vitor Mendes Pereira, Adrien Guenego, Adam A Dmytriw

Faculty, Staff and Student Publications

Background: Acute ischemic stroke (AIS) from distal medium vessel occlusion (DMVO) presents unique treatment challenges. Mechanical thrombectomy (MT) is emerging as a viable option for these patients, yet the role of pre-stroke aspirin treatment is unclear. This study evaluates the impact of pre-stroke low-dose aspirin on outcomes in DMVO patients undergoing MT.

Methods: We conducted a multinational, multicenter, propensity score-weighted analysis within the Multicenter Analysis of primary Distal medium vessel occlusions: effect of Mechanical Thrombectomy (MAD-MT) registry. Patients with AIS due to DMVO, treated with MT, were included. We compared outcomes between patients on pre-stroke low-dose aspirin (75-100 mg) and …

Interconnections Of Insulin/Igf-1 Signaling And Autophagy Abnormalities In Alzheimer’S Disease, Wang Liao, Jinfeng Xuan, Woo-In Ryu, Mariana K Bormann, Yoon Lee, Haley Dion, Elizabeth Evangelista, Ruiyi Li, Lucas Trambaiolli, Jun Liu, Arthur J Siegel, Brent P Forester, Bruce M Cohen, Kai-Christian Sonntag

Faculty, Staff and Student Publications

Introduction: Impaired insulin (INS) and insulin-like growth factor 1 (IGF-1) signaling are features of both brain aging and late-onset Alzheimer's disease (LOAD). However, their exact underlying mechanisms and cause-and-effect linkages, including the downstream regulation of endocytosis and autophagy, are still not well understood.

Methods: We investigated INS/IGF-1 signaling and its connection with endocytic and autophagic processes in fibroblasts from LOAD patients and healthy young or old control individuals.

Results: Compared to control old-age cells, protein levels in the INS/IGF-1 signaling cascade were elevated in LOAD cells, but activation of AKT was reduced. The activation of the INS/IGF-1/AKT/FOXO1 or mTOR axes …

Preventing Acute Kidney Injury And Its Longer-Term Impact In The Critically Ill, Alexander Zarbock, Lui Forni, Jay L Koyner, Hernando Gómez, Neesh Pannu, Marlies Ostermann, Rinaldo Bellomo, John A Kellum, Thilo Von Groote

Faculty, Staff and Student Publications

Acute kidney injury (AKI) is a heterogeneous syndrome that not only affects short-term morbidity and mortality but also influences long-term outcomes. AKI is part of acute kidney disease (AKD) that encompasses a range of different conditions and is characterized by a kidney dysfunction lasting 90 days or less after which time the term chronic kidney disease (CKD) applies. AKD may result in irreversible loss of nephrons and may lead to CKD. In this narrative review, an update on different aspects of AKI in critically ill patients will be provided. We discuss biomarkers for early diagnosis of AKI, sub-clinical AKI, as …

Switching From Adalimumab Reference Product To And Among Adalimumab Biosimilars Outside The Usa: Insights For Us Clinicians, John R P Tesser, Aline Charabaty, Adelaide A Hebert

Faculty, Staff and Student Publications

Ten adalimumab biosimilars have been introduced in the United States (USA) since 2023, while adalimumab biosimilars have been available for several years in other countries. These experiences of biosimilar uptake outside the USA can inform US-based healthcare professionals on switching in real-life practice settings. Considerations include how healthcare professionals might meaningfully address patient concerns about outcomes to improve patient satisfaction. A search of the MEDLINE database was used to identify publications on switching to and among adalimumab biosimilars in an ex-US setting, with no restriction on publication language and using a time frame of 1 January 2017 through 12 December …

Endovascular Therapy For Late-Window M2-Segment Middle Cerebral Artery Occlusion: Analysis Of The Clear Study, Simon Winzer, Daniel P O Kaiser, Muhammad M Qureshi, Alicia C Castonguay, Daniel Strbian, Raul G Nogueira, Simon Nagel, Jean Raymond, Mohamad Abdalkader, Jelle Demeestere, João Pedro Marto, Hiroshi Yamagami, Kanta Tanaka, Sunil A Sheth, Anne Dusart, Patrik Michel, Marta Olive Gadea, Marc Ribo, Osama O Zaidat, Diogo C Haussen, Hilde Henon, Mahmoud H Mohammaden, Markus A Möhlenbruch, James E Siegler, Ajit S Puri, Johannes Kaesmacher, Piers Klein, Liisa Tomppo, Francois Caparros, João Nuno Ramos, Mouhammad Jumaa, Syed Zaidi, Nicolas Martinez-Majander, Stefania Nannoni, Lieselotte Vandewalle, Flavio Bellante, Milagros Galecio-Castillo, Sergio Salazar-Marioni, Pekka Virtanen, Anke Wouters, Rita Ventura, Jessica Jesser, Adnan Mujanovic, Liqi Shu, Abiya Qureshi, Zhongming Qiu, Hesham E Masoud, Manuel Requena, Mikko Sillanpää, Wei Hu, Eugene Lin, Charlotte Cordonnier, Daniel Roy, Shadi Yaghi, Davide Strambo, Urs Fischer, Santiago Ortega-Gutierrez, Robin Lemmens, Peter A Ringleb, Thanh N Nguyen, Volker Puetz

Faculty, Staff and Student Publications

Background: There is uncertainty about whether patients with M2 occlusion benefit from endovascular therapy (EVT) in the late (6-24-hour) time window. We evaluated the clinical outcomes of patients with M2 occlusion selected for EVT compared with those who received medical management (MM) in the late window.

Methods: This multinational cohort study was conducted at 66 sites across 10 countries (January 2014 to May 2022). We included consecutive patients with late-window stroke due to M2 occlusion, baseline National Institutes of Health Stroke Scale score of ≥5, and premorbid modified Rankin Scale score of ≤2 who received EVT or MM alone. The …

A Case Of Aqp4-Igg Neuromyelitis Optica Presenting With Orbital Inflammatory Syndrome, Lucy A Bailey, Roy F Riascos, Ore-Ofe O Adesina

Faculty, Staff and Student Publications

A 45-year-old healthy African-American man experienced 2 months of right-eye soreness followed by acute onset of right painful vision loss with binocular, oblique diplopia. Visual acuity was count fingers OD and 20/20 OS. He had a partial, right, pupil-involving cranial nerve III palsy with a right relative afferent pupillary defect and optic disc edema with tortuous vessels. Magnetic resonance imaging showed increased T2 signal with tortuosity and thickening of the retrobulbar right optic nerve with associated restricted diffusion and enhancement, enhancement of orbital fat adjacent to the optic nerve sheath, and relative right proptosis. Workup was positive for aquaporin-4 antibody …

Automated Mycoplasma Genitalium Molecular Macrolide Resistance Detection And Nucleic Acid Target Semi-Quantitation: Patient Demographic Considerations, Josephine Moore, Trinity Krueger, Amanda Zapp, Stephen C Lavey, Kimber L Munson, Irene A Stafford, Michael E Newcomb, Brian Mustanski, Erik Munson

Faculty, Staff and Student Publications

Recent work has optimized parameters of a real-time reverse transcriptase PCR-based laboratory-developed test on the Panther Fusion system which detects Mycoplasma genitalium-specific macrolide resistance-associated mutations LDT (MRM-LDT) from primary swab and urine specimens. In this study, MRM-LDT was applied to a large multi-demographic study set to further characterize M. genitalium resistance in the United States. A total of 2,145 primary clinical specimens testing positive for M. genitalium 16S rRNA by transcription-mediated amplification (TMA) were initially titered by the same assay using serial 10-fold dilutions to determine relative target nucleic acid burden. Specimens were then processed for MRM-LDT. Findings were stratified …

Evolving Hemodynamics In Fontan Circulation: Age-Driven Insights In Patients With Interrupted Inferior Vena Cava And Hepatoazygos Shunt, Vikas Kannojiya, Akshita Sahni, Emily Eickhoff, Neha Zacharia, Nicole St Clair, Noah Schulz, Peter E Hammer, Pedro J Del Nido, Rahul H Rathod, David M Hoganson, Vijay Govindarajan

Faculty, Staff and Student Publications

Patients with interrupted inferior vena cava (I-IVC) and azygos continuation who undergo Fontan completion via hepatoazygos shunting exhibit unique hemodynamic challenges. This study evaluates age-related shifts in systemic venous return dominance, hepatic flow distribution (HFD), power loss (PL), and flow disturbances using patient-specific computational fluid dynamics (CFD). Data analysis from 95 patients with I-IVC showed a nonlinear shift in upper-to-lower body systemic flow dominance with ratios of 2, 1, and 0.5 (correlating to ages ∼3, ∼10, and ∼20, respectively). CFD simulations for 17 selected patients revealed a trend of increasing HFD toward the right pulmonary artery, with median splits of …

Prevalence, Treatment Patterns, Burden, And Factors Related To Treatment Failure With Sodium-Glucose Cotransporter 2 Inhibitor In Adults With Type 2 Diabetes In The United States, Xi Tan, Yiwen Cao, Yan Wang, Joanna Boland, Mico Guevarra, Lin Xie, Yan Song, Min Ji Kwak

Faculty, Staff and Student Publications

Aims: To evaluate treatment failure of sodium-glucose cotransporter 2 inhibitors (SGLT2i) among adults with type 2 diabetes (T2D) and assess associated risk factors and clinical and economic outcomes in the real-world setting.

Methods: Adults with T2D who initiated SGLT2i were selected from the Komodo's Healthcare Map, an administrative claims database (2016-2024). Treatment failure was defined as discontinuation, add-on/switching, or uncontrolled glycated hemoglobin (HbA1c) without action. Risk factors, treatment patterns, and clinical and economic burden were assessed.

Results: Among 237,295 eligible adults, the overall rate of treatment failure with SGLT2i was 77.3 %, with a median time to failure of 9.14 …

Empirical Tuberculosis Treatment In Human Immunodeficiency Virus (Hiv)-Associated Fever Of Unknown Origin: A Case-Based Rationale, Matthew Antonioli, Samantha H Antonioli, Gabriel M Aisenberg

Faculty, Staff and Student Publications

Fever of unknown origin (FUO) in people living with human immunodeficiency virus (PLHIV) is clinically defined as recurrent fever lasting more than four weeks in the outpatient setting or more than three days during hospitalization, despite a thorough diagnostic evaluation. This evaluation typically includes a comprehensive medical history, physical examination, imaging studies (such as chest radiography), and an extensive range of laboratory tests, including complete blood counts, blood and urine cultures, and metabolic panels. Among the many possible causes, tuberculosis (TB) stands out as a leading concern, given its disproportionate burden in PLHIV. However, whether to initiate empirical anti-tubercular therapy …

Ten Practical Tips For A Successful Presentation At An Infectious Disease Clinical Case Conference, Takahiro Matsuo, Pablo C Okhuysen, Ben J Barnett

Faculty, Staff and Student Publications

This mini-review provides 10 practical tips for infectious disease trainees presenting at clinical case conferences. These tips, grounded in principles from education theory, aim to enhance the effectiveness of case presentations.

An Ectopic Pancreatic Mass Inducing Gastric Outlet Obstruction, Rohan Ahuja, Samir Mehta, Nakia Armendariz, Jimmy Q Pham, Madhav Desai

Faculty, Staff and Student Publications

Gastric outlet obstruction (GOO) is a clinical diagnosis characterized by early satiety, abdominal pain, post-prandial vomiting, and weight loss. Here, we present a rare case of an ectopic pancreatic cyst inducing GOO, highlighting the importance of a thorough diagnostic workup. A 40-year-old man with no prior medical or surgical history presented with a six-month history of intermittent epigastric pain, nausea, and vomiting with an inability to tolerate oral intake for a week. CT of the abdomen and pelvis revealed a 4.5 × 3.0 × 2.9 cm, well-circumscribed, peripherally enhancing cystic lesion in the distal pylorus. Initial esophagogastroduodenoscopy (EGD) revealed an …

Exploring Differential Impacts Of A Parent Intervention On Reading And Toy Play Across Ethnic And Linguistic Groups, Sarah Surrain, Susan H. Landry, Tricia A. Zucker, Yoonkyung Ch

Faculty, Staff and Student Publications

The ways that parents respond to their children’s initiations and guide their learning are associated with subsequent language development. Responsive parenting interventions have shown positive impacts on parent behaviors and child outcomes. However, less is known about how intervention effects vary for families from different linguistic and ethnic backgrounds. This secondary analysis of a randomized controlled trial of Play and Learning Strategies examines the effect of the intervention for three subgroups: Spanish-dominant Latine families (n = 142), English-dominant Latine families (n = 112), and non-Latine families (n = 137). Parents of preschool-aged children (M age = …

Navigating Child Oral Health In Western Australia: A Caregiver's Perspective, Lesley Andrew, Elizabeth Wenden, Mohamed Estai, Ruth Wallace

Research outputs 2022 to 2026

Background: Early childhood caries (ECC) is the most common chronic health condition among Australian preschool-aged children. Untreated, ECC can affect children's physical and emotional health and future social opportunities. ECC is largely preventable through primary caregivers' correct understanding of oral health promoting diets, oral hygiene practices and dental service engagement. The study aim is to explore Western Australian (WA) primary caregivers' child oral health knowledge, experience and practices. The Fisher-Owens socioecological model of child oral health was applied across the study to structure and interpret the findings across the complex, interactive sociocultural influences on child oral health. Methods: The mixed-methods …

What Are Safe Hemoglobin, Neutrophil And Platelet Counts For People With Hematological Malignancies To Participate In Exercise And Activities Of Daily Living: A Scoping Review, Joanne L. Houston, Kieran P. Boyd, Paul M. Gittings, Vinicius Cavalheri

Research outputs 2022 to 2026

Purpose: The aim of this scoping review was to summarize the extent of the literature in relation to safe levels of platelet, hemoglobin and neutrophil count for people with hematological cancers to participate in exercise or activities of daily living (ADLs). Methods: A comprehensive search for this scoping review was completed in July 2024 across five databases: the Cochrane Library, Embase, PEDro, PubMed and OTSeeker. Original studies, reviews and expert opinion papers were included if they focused on people with active hematological cancer diagnoses or those undergoing treatment affecting bone marrow, and referenced safe levels of platelet, hemoglobin and neutrophil …

Models Of Care For Indigenous Children In Rural And Remote Settings: A Global Scoping Review, Joseph Freeman, Thomas Stubbs, Verity Chadwick, Anita Pickard, Tuguy Esgin, Elizabeth J. Elliott, Alexandra Martiniuk

Research outputs 2022 to 2026

Indigenous communities internationally have demonstrated remarkable strength despite significant challenges. Health disparities among Indigenous peoples persist due to historical injustices and ongoing racial discrimination, not inherent vulnerabilities. Disparities are rooted in a legacy of colonisation, systemic exclusion, and socio-economic inequities impacting access to healthcare, education, and employment. Preliminary searches show limited literature on models of care for remote living Indigenous children. This review aimed to identify internationally, effective models of care for Indigenous children in rural and remote areas. A scoping review was conducted, analysing literature on models of care for remote Indigenous children. This study followed the JBI’s Scoping …

Social Service Inclusion Of Immigrants Through The Lens Of Human Rights In Australia, Obed Adonteng-Kissi, Matthew Mabefam, Nnaemeka Meribe, Frank Darkwa Baffour, Elizabeth Archibong

Research outputs 2022 to 2026

Motivation: A human-centred approach to social service design is necessary to encourage social service inclusion and to offer an avenue for social service action in Australia and globally. Purpose: The purpose of this article is to ascertain the extent to which social service providers design their services to include immigrants. Approach and methods: We draw on literature exploring social service inclusion and the perspectives of 27 social workers and immigrant service users. Semi-structured interviews were conducted with eight social workers and 19 immigrants who were purposefully selected from Brisbane, Townsville, Melbourne and Sydney. We applied the capability theoretical approach of …

Climate Fiction Of The Anthropocene, Joseph Paul Ferguson, Cassandra Tytler, Peta J. White, Susan Oliver

Research outputs 2022 to 2026

No abstract provided.

Physical Work Environments: An Integrative Review And Agenda For Future Research, Bukky Akinsanmi Oyedeji, Yea Hee Ko, Sunkee Lee

Research Collection Lee Kong Chian School Of Business

This review examines the effect of physical work environments—the dedicated, tangible spaces where employees carry out their professional tasks—on organizational processes and outcomes. We synthesize decades of research across various disciplines using a conceptual framework that defines physical work environments along three key dimensions: ambience, spatial configuration, and aesthetics. These dimensions are analyzed for their effects on both internal stakeholders, such as employees, and external stakeholders, including clients, suppliers, and investors. Our analysis reveals two major themes in prior research: (1) task accomplishment, which focuses on how physical work environments influence physical and mental health, motivation and attitudes, as well …

Relational History: Correcting Temporal Myopia In Social Network Research, Julia Brennecke, Gianluca Carnabuci, Gokhan Ertug

Research Collection Lee Kong Chian School Of Business

Scholars have used network concepts and methods to explain a wide range of organizational phenomena. Despite this broad interest, prevalent approaches tend to neglect a critical constitutive dimension of network ties: their history. We invoke the concept of relational history to signify the temporal path and biography of a network tie. We argue that a network tie’s history shapes what the relationship means to the parties involved, what can be accomplished in and through the relationship, and how the relationship might further evolve. In directing the attention of organizational network researchers to the relational history of network ties, we aim …

A Power Dependence Model Of The Impact Of Leader Impostorism On Supervisor Support And Undermining: The Moderating Role Of Power Distance, Zihan Liu, Zihan Liu, Feng Qiu, Keith Leavitt, Xingyu Wang, Ziyang Tang

Research Collection Lee Kong Chian School Of Business

Leaders, often perceived as possessing exceptional confidence and competence, are not immune to feelings of self-doubt. Leader impostorism describes the experience that one’s attributes, experiences, skills, and abilities fall short of the standards expected in the leadership role, resulting in a sense of deception in fulfilling leadership responsibilities. While existing research has examined the antecedents and individual outcomes of leader impostorism, its implications for leaders’ treatment of subordinates remain largely unexplored. In this research, we investigate the downstream consequences of leader impostorism on behaviors directed toward subordinates. Integrating research on leader impostorism with power dependence theory, we propose that for …

Green Human Resource Management System Development In Africa: A Systematic Literature Review, Jinghan Wang, Lijun Tang, Jinhua Zhang, Bong-Keun Choi, Christopher Phillips

Plymouth Business School

Green Human Resource Management (GHRM) has garnered widespread international attention, yet the GHRM practices implementation and the challenges they face in African organisations remain underexplored. Given that the majority of GHRM studies in the African context have been published over the past four years, there is a clear need for a systematic review of the literature on GHRM in this region. This review examines 23 studies to identify which GHRM topics have been explored in the African context and what theories and methodologies have been adopted in these studies. Drawing from the selected literature, a conceptual framework is established to …

Psychometric Properties Of The Indonesian Version Of The Quality Of Life Index (Qli-I) Among Family Caregivers Of Dependent Older Persons With Type 2 Diabetes Mellitus, Rinco Siregar, Charuwan Kritpracha, Tippamas Chinnawong, Jos M. Latour

School of Nursing and Midwifery

Background: The quality of life (QoL) of family caregivers supporting older persons with functional dependence due to Type 2 Diabetes Mellitus (T2DM) is a growing concern. Accurately assessing caregiver well-being requires culturally appropriate, valid, and reliable instruments. However, such tools remain limited in the Indonesian context. Objective: This study aimed to translate the Quality of Life Index (QLI) into Indonesian and evaluate the psychometric properties of the Indonesian version (QLI-I) among family caregivers of dependent older persons with T2DM. Methods: Brislin’s back-translation method was used to ensure linguistic and conceptual equivalence in the translation process. Content validity was assessed by …

Do Search Costs Explain Persistent Investment In Active Mutual Funds?, Aljoscha Janssen, Jurre Thiel

Research Collection School Of Economics

Active funds, though losing market share since the 1990s, make up nearly half of all mutual funds but charge more without better performance. We analyze fund data and a search model, highlighting the impact of search costs and active fund preferences. From 1993 to 2018, reduced search costs expanded the market and heightened competition, while a preference shift from active to passive funds increased the latter's market share. However, investors who choose active funds, facing higher search costs, and continue to show a strong preference for them, allow these funds to keep charging higher fees.

One-Sided Limited Commitment And Aggregate Risk, Yoshiki Ando, Dirk Krueger, Harald Uhlig

Research Collection School Of Economics

In this paper we study the neoclassical growth model with idiosyncratic income risk and aggregate risk in which risk sharing is endogenously constrained by one sided limited commitment. Households can trade a full set of contingent claims that pay off depending on both idiosyncratic and aggregate risk, but limited commitment rules out that households sell these assets short. The model results, under suitable restrictions of the parameters of the model, in partial consumption insurance in equilibrium. With log-utility and idiosyncratic income shocks taking two values one of which is zero (e.g., employment and unemployment) we show that the equilibrium can …

The Rising Returns To R&D: Ideas Are Not Getting Harder To Find, Yoshiki Ando, James Bessen, Xiupeng Wang

Research Collection School Of Economics

R&D has grown robustly, yet aggregate productivity growth has stagnated. Is this because “ideas are getting harder to find”? Using microdata from the US Census Bureau this paper estimates R&D effectiveness in the manufacturing sector from 1976 to 2018. We find that the marginal effect of R&D on output and the gross marginal returns to R&D have risen sharply. But rivals’ R&D has also gotten more effective, raising expected obsolescence. But firm productivity growth rises with growth in the R&D stock. Higher obsolescence slows the accumulation of R&D capital, reducing the contribution to productivity growth and shortening innovation lives.

Digital Bibliography In The Age Of Linked Data, Kate Ozment

Faculty Scholarship

The article explores how the interplay of ideological values and technological capacities have shaped the digital bibliography of British print history. Using a misgendering in the English Short Title Catalogue (ESTC) as a case study, the article explores how information flows through resources like Eighteenth Century Collections Online (ECCO), and Early English Books Online (EEBO), library catalogues, WorldCat, and retail outlets like Amazon. The article argues that as data from the ESTC is reproduced through linked data structures, information is ‘authorized’ far beyond what a single resource would do alone or what its original authors imagined or designed. While feminist, …

Experimental Determination Of Diffusion Flame Extinction Boundaries Over A Pmma Sphere: The Effect Of Sub-Surface Solid Heating, James S. T'Ien, Chengyao Li

Faculty Scholarship

The SoFIE-GEL (Solid Fuel Ignition and Extinction-Growth and Extinction Limit) microgravity combustion experiment was recently conducted aboard the International Space Station (ISS). In these tests, diffusion flame extinction limits of 4-cm diameter PMMA (polymethacrylate) spheres were determined as a function of forced flows (0.2 to 80 cm/s), oxygen concentrations (13 % to 34 %) and pressure (0.15–1.1 atm). In particular, the effect of sample heat-up is investigated. The sample surface layer is preheated by the ignitor and the diffusion flame itself before the extinction procedure (e.g. flow velocity decrease or increase or oxygen decrease) is implemented. The degree of sample …