bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Voltage-Controlled, Oscillation-Based ADC Design for Computation-in-Memory Architectures Using Emerging ReRAMs
Authors: Mayahinia Mahta , Singh Abhairaj , Bengel Christopher , Wiefels Stefan , Lebdeh Muath A. , Menzel Stephan , Wouters Dirk J. , Gebregiorgis Anteneh , Bishnoi Rajendra , Joshi Rajiv , Hamdioui Said 
Published: March 2022

Conventional von Neumann architectures cannot successfully meet the demands of emerging computation and data-intensive applications. These shortcomings can be improved by embracing new architectural paradigms using emerging technologies. In particular,
Computation-In-Memory (CiM)
using emerging technologies such as
Resistive Random Access Memory (ReRAM)
is a promising approach to meet the computational demands of data-intensive applications such as neural networks and database queries. In CiM, computation is done in an analog manner; digitization of the results is costly in several aspects, such as area, energy, and performance, which hinders the potential of CiM. In this article, we propose an efficient Voltage-Controlled-Oscillator (VCO)–based analog-to-digital converter (ADC) design to improve the performance and energy efficiency of the CiM architecture. Due to its efficiency, the proposed ADC can be assigned in a per-column manner instead of sharing one ADC among multiple columns. This will boost the parallel execution and overall efficiency of the CiM crossbar array. The proposed ADC is evaluated using a Multiplication and Accumulation (MAC) operation implemented in ReRAM-based CiM crossbar arrays. Simulations results show that our proposed ADC can distinguish up to 32 levels within 10 ns while consuming less than 5.2 pJ of energy. In addition, our proposed ADC can tolerate ≈30% variability with a negligible impact on the performance of the ADC.
Performance Evaluation of Group OSCORE for Secure Group Communication in the Internet of Things
Authors: Gunnarsson Martin , Malarski Krzysztof Mateusz , Höglund Rikard , Tiloca Marco 
Published: March 2022

The Constrained Application Protocol (CoAP) is a major application-layer protocol for the Internet of Things (IoT). The recently standardized security protocol Object Security for Constrained RESTful Environments (OSCORE) efficiently provides end-to-end security of CoAP messages at the application layer, also in the presence of untrusted intermediaries. At the same time, CoAP supports one-to-many communication, targeting use cases such as smart lighting and building automation, firmware update, or emergency broadcast. Securing group communication for CoAP has additional challenges. It can be done using the novel Group Object Security for Constrained RESTful Environments (Group OSCORE) security protocol, which fulfills the same security requirements of OSCORE in group communication environments. While evaluations of OSCORE are available, no studies exist on the performance of Group OSCORE on resource-constrained IoT devices.
This article presents the results of our extensive performance evaluation of Group OSCORE over two popular constrained IoT platforms, namely Zolertia Zoul and TI Simplelink. We have implemented Group OSCORE for the Contiki-NG operating system and made our implementation available as open source software. We compared Group OSCORE against unprotected CoAP as well as OSCORE. To the best of our knowledge, this is the first comprehensive and experimental evaluation of Group OSCORE over real constrained IoT devices.
Distribution and habitat-use of Dhole Cuon alpinus (Mammalia: Carnivora: Canidae) in Parsa National Park, Nepal
Authors: Thing Santa Bahadur , Karki Jhamak Bahadur , Lamichhane Babu Ram , Shrestha Shashi , Regmi Uba Raj , Ranabhat Rishi 
Published: March 2022

Dhole Cuon alpinus is one of the top predators in Asian forests but is one of the least studied species of carnivores. We surveyed an area of 499 km2 of Parsa National Park (PNP) during the winter (November–January) of 2016–17 using camera-traps to determine the spatial distribution and habitat-use patterns of Dhole. We overlaid 2 x 2 km2 grid cells (n= 126) across the study area and set up a pair of motion sensor cameras in each grid cells for 21 days. We modeled the habitat-use by Dholes as a function of sampling covariates and fine-scale habitat covariates using single species single season occupancy models. We estimated the parameters in two steps. First, we defined a global model for probability of habitat-use and modeled detection probability (p) either as an intercept-only model or as a function of covariates. Second, we modeled the habitat-use probability (Ψ) incorporating the top-ranked model for probability of detection (p) in the first step. A total effort of 2,520 camera-trap-nights resulted in 63 independent detections of dholes at 27 locations in PNP. The naïve occupancy estimate of Dholes in PNP was 0.21. The estimated probability of habitat-use (Ψ) and detection (p) were 0.47±0.27 and 0.24±0.05, respectively. Grassland availability (βG= 8.00±3.09), terrain ruggedness index (βTRI= 0.73±0.34), and Sambar (prey) presence (βS= 1.06±0.51) strong positive association, whereas, stream/exposed surfaces (βSES= -0.45±0.43) had negative association with the habitat use by Dholes. Similarly, detection probability was positively associated with presence of Sambar (βS= 2.44±1.02) but negatively associated with streams/exposed surfaces (βSES= -0.99±0.32) and terrain ruggedness (βTRI= -0.09±0.23). Our study provides quantitative information on the ecology of Dholes with potential applications for improving their conservation efforts in Nepal.
The Effect of Insurance Status on Bariatric Surgery Outcomes: A Retrospective Chart Review Study
Authors: Akhtar Shaan J. , Helmer Stephen D. , Quinn Karson R. , Lancaster Brent A. , Howes Jeremy L. , Brown Nicholas M. 
Published: March 2022

Background Prior studies have shown socioeconomic factors and race to affect weight loss after bariatric surgery, but few have focused on the impact of insurance status. The purpose of this study was to determine if insurance status affects bariatric surgery patients’ surgical outcomes and weight loss. Methods A retrospective review was conducted of 408 bariatric patients who underwent laparoscopic Roux-en-Y gastric bypass (LRYGB) or sleeve gastrectomy (SG). Patients were stratified by insurance status and surgery type to evaluate weight loss and surgical outcomes. Results Overall, patients experienced 71.0% excess weight loss at 1-year postoperatively. Patients undergoing LRYGB had greater percent excess weight loss (%EWL) at 1-year (74.5% vs 63.3%, P < .001) than SG patients. Upon multiple regression analysis, insurance type did not affect %EWL. Instead, younger age, female gender, LRYGB procedure, and lower initial BMI were all associated with greater %EWL. Conclusions Insurance type is not a useful independent predictor of successful weight loss in bariatric surgery patients.
Opioid Prescribing Behaviors Among Surgical Intensive Care Unit Attending Physicians
Authors: Goodman Emily M. , Wells Allison , Jensen Hanna K. , Kalkwarf Kyle J. 
Published: March 2022

Background More than 5 million Americans misuse opioids. Six percent of patients who receive opioids for acute pain progress to chronic use; this increases with higher doses and longer prescriptions. Prescribing variation exists within trauma centers and after emergency surgery but has not been demonstrated among intensivists. Methods Milligram morphine equivalents (MME) per patient-ICU-day provided by eleven surgical intensivists were analyzed. The patients were separated into 2 groups based on their percentage of time intubated in the surgical ICU. Both study groups were compared using demographics and comorbidity scores. The attendings were divided into high- and low-prescribing groups based on their MME/pt-ICU-day for intubated patients, and bivariate statistical analyses were performed. A similar analysis compared surgery vs anesthesia intensivists. Results The analysis included 257 patients in the “long-vent group” (LVG) and 668 patients in the “short-vent group” (SVG). The average MME/pt-ICU-day for the LVG was 222. Despite no significant differences in age, sex, or Elixhauser Comorbidity Index, there was a 45% difference between the high- and low-prescribing physicians in the LVG (253.7 vs 175.4 MME/pt-ICU-day; P = .008). This difference was not observed for patients in the SVG (74.3 vs 93.1 MME/pt-ICU-day; P = .141) nor based on intensivist specialty (LVG: 217.9 vs 209.5 MME/pt-ICU-day; P = .8) (SVG: 79.0 vs 93.3 MME/pt-ICU-day; P = .288).
Routine Repeat Imaging Is Unnecessary for Coagulopathic Patients Sustaining Head Trauma
Authors: Wang Steadman , Meagher Mitchell , Mullin Emma , Brown Catherine , Skicki Edward J. 
Published: March 2022

Introduction In trauma patients using warfarin, current guidelines recommend computed tomography of the brain (CTH), 24-hour observation, and repeat CTH to monitor for stability. Despite growing evidence of uncommon delayed hemorrhage, this remains standard practice even in mild traumatic brain injury without intracranial hemorrhage (ICH). Our study sought to determine the incidence and outcomes of delayed ICH (DICH) in trauma patients on supra-therapeutic warfarin without initial ICH. Methods A retrospective, single institutional study was performed of all adult trauma patients (>18 years old) who presented on prehospital warfarin with an international normalized ratio (INR) >3 and initial CTH that did not demonstrate ICH. Each of these patients underwent subsequent CTH within 24 hours and any DICH was identified. Those who demonstrated DICH were further examined to identify potential risk factors and outcomes such as need for further imaging or surgical intervention. Analyses were performed using Fisher’s exact tests and Student’s t-tests. Results 225 patients were identified from January 2015 to April 2021 that met inclusion criteria. Of those identified, only 3 (1.33%) were found to develop any DICH on routine repeat CTH. Identified characteristics did not reach statistical significance due to the low number of DICH. None of the patients with DICH went on to require intervention. Conclusion In patients with identified traumatic injury on supra-therapeutic warfarin, an initial CTH without identified ICH alone is an adequate survey. DICH in these patients is uncommon and routine reimaging within 24 hours is unlikely to change clinical management in patients with intact neurologic status.
How We Do It: Remediation Pathways in a Surgical Simulation Curriculum for Competency Improvement
Authors: Lovasik Brendan P. , Fay Katherine T. , Hinman Johanna M. , Delman Keith A. , Srinivasan Jahnavi K. , Santore Matthew T. 
Published: March 2022

Objective Validated assessment of procedural knowledge and skills with formative remediation is a foundational part of achieving surgical competency. High-fidelity simulation programs provide a unique area to assess resident proficiency and independence, as well as to assist in identifying residents in need of further practice. While several studies have validated the use of simulation to attain proficiency of specific technical skills, few have validated remediation pathways for their trainees objectively. In this descriptive analysis, we review 2 remediation pathways within our simulation training curricula and how these are used in assessments of resident proficiency. Materials and Methods Two methods of remediation were formulated for use in high-fidelity simulation labs. One remediation pathway was a summative process, where ultimate judgment of resident competency was assessed through intra-operative assessments of a holistic skill set. The second remediation pathway was a formative “coaching” process, where feedback is given at several intervals along the pathway towards a specific technical skills competence. All general surgery residents are enrolled in the longitudinal, simulation curricula. Results Approximately one-third of surgical residents entered into a remediation pathway for either of the high-fidelity simulation curricula. Both residents and faculty expressed support for the summative and formative remediation pathways as constructed. Residents who entered remediation pathways believed it was a beneficial exercise, and the most common feedback was that remediation principles should be expanded to all residents. Interestingly, faculty demonstrated stronger support for the formative coaching feedback model than the summative assessment model. Conclusions Through the complementary use of both formative and summative remediation pathways, resident competence can be enriched in a constructive, nonpunitive method for self-directed performance improvement. Both trainees and faculty express high satisfaction with programs explicitly organized to ensure that skills are rated through a standardized process.
Complications After Inpatient Laparoscopic Cholecystectomy: Effect of Surgeon Experience, Procedure Volume, and Other Surgeon-Based Characteristics
Authors: Guiab Keren , Evans Teresa , Brigode William , Stamelos George , Sebekos Konstantinos , Siddiqi Mahwash , Capron Gweniviere , Kaminsky Matthew , Bokhari Faran 
Published: March 2022

Background Previous studies have examined how factors such as gender, education, type of training (MD or DO), and experience of the treating surgeon affect patient outcomes. We investigated patient complications after elective laparoscopic cholecystectomy based on surgeon characteristics. Methods A Medicare database was used to identify surgeon-specific data. The main outcome measure was the adjusted complication rates (ACR) for individual surgeons as reported by the ProPublica Surgeon Scorecard. Surgeon gender, type of training, medical school rank, years since graduation, procedure volume, and teaching status of the primary hospital affiliation were assessed for any association with increased ACR using logistic regression analysis. We explored the associations among procedure volume, years of experience, and ACR using Spearman correlation. Results 1107 predominantly male (94.6%) surgeons were included. 94.4% were MDs and 34.5% were affiliated with teaching hospitals. Mean length of practice was 24 ± 9 years, and median surgeon procedure volume was 28 (IQR = 23, 37). Overall median ACR was 4.3%. Multivariate analysis demonstrated that surgeon gender ( P = .71), medical school rank, type of training ( P = .68), or hospital affiliation ( P = .77) did not have a significant impact on ACR. Increased surgeons’ years in practice (r = −.028, P = .35) and increased surgeon procedure volume (r = −.021, P = .49) were negatively associated with increased ACR. Conclusion Surgeon gender, type of training, medical school rank, or hospital affiliation had no impact on complications after laparoscopic cholecystectomy. Surgeon experience and procedure volume may have clinical implications for patient outcomes. Further studies to elucidate factors associated with surgeon quality and patient outcomes are necessary.
Congenital Diaphragmatic Hernia Repair at the Bedside or Operating Theater
Authors: Niec Jan A. , Achey Meredith A. , Wallace Marshall W. , Patel Anuradha , Zhao Shilin , Hatch L. Dupree , Morris Emily A. , Danko Melissa E. , Pietsch John B. , Lovvorn Harold N. 
Published: March 2022

Background For critically ill congenital diaphragmatic hernia (CDH) patients on high frequency oscillatory ventilation (HFOV), extracorporeal membrane oxygenation (ECMO), and/or inhaled nitric oxide (iNO), operative repair in the neonatal intensive care unit (NICU) has been proposed to avoid complications during transport to an operating room (OR). This study compared neonates with CDH who received herniorrhaphy in the NICU or OR, with a subgroup analysis considering only patients supported with ECMO. Methods Patients admitted to the NICU in the first 2 weeks of life at a free-standing children’s hospital between July 2004 and September 2021 were examined. Patients were categorized according to location of CDH repair, and impact on operative complications and survival was compared. Results 185 patients were admitted to the NICU with posterolateral CDH and received operative repair. 48 cases were operated on at the bedside in the NICU and 137 in the OR. Patients repaired in the NICU had higher use of HFOV, pulmonary vasodilators, and ECMO (all P < .001). Children repaired in the NICU experienced significantly higher in-hospital death and overall mortality ( P < .001). However, in multivariate analysis, repair location was not a significant predictor of survival to discharge in patients receiving ECMO. No significant difference in surgical site infection was detected for operative location ( P = .773). Discussion Congenital diaphragmatic hernia repair in the NICU occurred more frequently among higher risk patients who experienced worse survival. The rate of surgical site infection appeared similar overall and across subgroups suggesting adequate sterility and technique for bedside procedures, when necessary, despite restricted access to advanced operative equipment.
Relationship Between Physical Activity, Coronary Artery Disease Risk Factors and Musculoskeletal Injuries in the City of Cape Town Fire and Rescue Service
Authors: Ras Jaron , Leach Lloyd 
Published: March 2022

Musculoskeletal injuries in firefighters are a common occurrence, that increase as firefighters age, and may be related to the firefighters’ physical activity habits outside of the job. Certain CAD risk factors, such as obesity, cigarette smoking and ageing may be linked to increased injury risk in firefighters. Although firefighters may meet the recommended minimum physical activity minutes, they may remain at risk for sustaining musculoskeletal injuries. Therefore, this study aims to determine the relationship between physical activity and CAD risk factors, between CAD risk factors and musculoskeletal injuries and between physical activity and musculoskeletal injuries. A total of 124 full-time firefighters, males and females, were conveniently recruited from the City of Cape Town Fire and Rescue Service. A researcher-generated questionnaire was used to collect injury, CAD risk factor and physical activity data. The proportion of firefighters who participated in leisure-time physical activity (LTPA) was 63.7%, and those who were physically inactive was 69.4%. The prevalence musculoskeletal injuries among all firefighters was 27.4%. The most prevalent musculoskeletal injury was shoulder injuries in 35.3% of firefighters, followed by multiple injuries in 26.5% and back injuries in 14.7%. Age was a significant predictor of physical inactivity in firefighters [P = .002, OR = 1.08], BMI was a significant predictor of physical inactivity [P = .050, OR = 1.08], cigarette smoking was a significant predictor of firefighters not exercising [P = .007, OR = 2.31] and the total amount of vigorous-intensity exercise was a significant predictor of musculoskeletal injuries [P = .050, OR = 1.00]. In conclusion, older firefighters were more physically inactive and had a higher prevalence of musculoskeletal injuries, and the latter decreased significantly after the age of 50 years. Emphasis should be placed on firefighters exercising in their leisure-time, especially as they aged.
Undergraduate Research Pools in Psychology Departments: Prevalence and Practices
Authors: Flynn Maureen K. , Rocheleau Courtney 
Published: March 2022

Background Limited research exists on the prevalence of undergraduate research participant pools (URPs) in psychology departments or guidelines surrounding their use. Objective The aim of the current study was to replicate older studies on the prevalence of URPs in the United States and the procedures and guidelines related to those requirements. Method Psychology department chairs in the U.S. were recruited by email and via the Association of Heads of Departments of Psychology listserv. A total of 604 department chairs participated in the online study by completing a series of assessments related to URP use in their department. Results Most 4-year institutions (67.7%), but few 2-year institutions (6.3%) had a URP. Of the 4-year institutions with a URP, 83.7% had a research requirement for students enrolled in their introduction to psychology courses. Most departments (84.0%) did not assess the educational value of research participation. Conclusion Most psychology departments have a URP, but few examined the educational value of research participation. Teaching Implications Psychology departments should identify learning objectives for research participation, assess outcomes, and identify practices that optimize achieving those objectives. Research requirements should be consistent with ethical principles and empirical evidence of learning.
Antecedents of Perceived Service Quality of Online Education During a Pandemic: Configuration Analysis Based on Fuzzy-Set Qualitative Comparative Analysis
Authors: Chowdhury Tanjim Istiaque , Hoque Md Rakibul , Wanke Peter , Raihan Mohammad Zahir , Azad Md Abul Kalam 
Published: March 2022

Background During COVID-19 lockdown worldwide, classroom education continues remotely through online. The question remains, comparing with the face-to-face education, does online education has a similar satisfaction level among the students? There are only a few studies that examine the perceived service quality of online education. Objective The study aims to analyze the factors of perceived service quality of online education during a pandemic. Research Design A structured questionnaire elicits information from 147 students from different study backgrounds of various universities worldwide. The fuzzy-set qualitative comparative analysis (fsQCA) is used for data analysis and model design. Research constructs evaluation for reliability and internal consistency are subsequently performed. A snowball random sampling method is applied for data collection. Results Findings from the fsQCA analysis identify four core factors that underpin student satisfaction through positive perceived service quality of online education. Alternative paths are determined based on gender, students’ current education status, and their loyalty toward online education. We also introduce two topologies of perceived quality regarding online education and student satisfaction. Originality Because of the primary nature of the data, this is firsthand experience gathered from different universities around the world who have willingly or unwillingly experienced online learning during the pandemic. The fsQCA technique for examining perceived service quality of online education. Conclusions The findings contain a number of contributions, illustrating different topologies of the student from different backgrounds and their intention, satisfaction and loyalty towards e-learning, and identifying causal factors that influence willingness to recommend online education.