University Of Southern California Research Articles

Breastfeeding knowledge & attitudes: Comparison among post-licensure undergraduate and graduate nursing students

Research aimsThe aims of this study are to compare the knowledge and attitude scores between undergraduate and graduate nursing students and to identify the variables associated with higher breastfeeding knowledge and attitudes. BackgroundNurses’ knowledge and attitudes towards breastfeeding greatly impact their roles in promoting and supporting breastfeeding. However, they may not have sufficient knowledge and/or positive attitudes to support and advocate for these families. Many studies focused on professional nurses or undergraduate students’ knowledge, attitudes, and beliefs. Few studies included registered nurses enrolled in post licensure undergraduate and graduate nursing programs. DesignA cross-sectional, prospective, and descriptive study. MethodsA convenient sample of 95 nursing students (50 undergraduate and 45 graduate) was recruited from an ethnically diverse, urban university in Southern California. Students voluntarily completed an online survey adapted from Brodribb, et al. (2008). Bivariate analysis was conducted to identify relationships between study variables. ResultsCompared to undergraduates, graduate students scored higher on knowledge and attitudes towards breastfeeding (p < 0.001). Students’ perception of their prior academic breastfeeding preparation was not related to their current knowledge and attitudes. Age, having children, exclusively breastfed own baby, and duration of personal breastfeeding were positively associated with attitudes and knowledge (p < 0.05 for all variables). Years of nursing experience (p = .01) was positively associated with attitudes only. ConclusionsCompared to academic preparation, age, having children, and personal breastfeeding experiences seem to be better indicators of breastfeeding knowledge and attitudes. Nursing programs should exert more effort in enhancing curricular evidence based breastfeeding education. More research is needed to support these efforts.

Size-segregated source identification of water-soluble and water-insoluble metals and trace elements of coarse and fine PM in central Los Angeles

In this study, the water-solubility and sources of metals and trace elements in both fine and coarse particulate matter (PM) were investigated in Central Los Angeles. Sampling was performed in the winter, spring, and summer of 2022 at the Particle Instrumentation Unit (PIU) of the University of Southern California located in the proximity of I-110 freeway. Both fine and coarse PM samples were collected using Personal Cascade Impactors (PCIS) and chemically analyzed to determine their water-soluble and water-insoluble metal content. Principal Component Analysis (PCA) and Multiple Linear Regression (MLR) were used to determine the sources of soluble and insoluble metals and obtain their contributions to total metal concentration. Our results indicate that the water-solubility of most of the metals is higher in the fine size fraction compared to the coarse fraction. Seasonal variations in the water solubility of selected metals for both coarse and fine fractions were observed, with higher water-soluble metal concentrations in summer for several species (e.g., Fe, S, Pb, Cu, La, Ni, and Al), possibly due to higher photochemical processing, while in winter, almost all species exhibited higher insoluble fraction concentrations. The PCA and MLR analyses results showed that tire and brake wear was the most significant contributor to the total metals for both fine soluble and insoluble portions, accounting for 35% and 75% of the total metals, respectively. Combustion sources also contributed substantially to water-soluble metals for fine and coarse size ranges, representing 40% and 32% of the total metal mass, respectively. In addition, mineral dust and soil and re-suspended dust were identified as the highest contributors to coarse metals. The MLR analysis also revealed that secondary aerosols contributed 11% to the fine water-soluble metals. Our results suggest that non-tailpipe emissions significantly contribute to both coarse and fine PM metals in the Central Los Angeles region.

Standardized Patients in Medical Education: A Review of the Literature.

The concept of standardized patients (SPs) was first introduced in the 1960s by Dr. Howard Barrows of the University of Southern California and has been applied in medical school education since that time. This practice has allowed medical students to practice skills on live persons who are teachers rather than on real patients, who may be endangered by their emerging skills.Previous studies supported the use of SPs but did not measure whether they improved clinical competence or students' confidence in their skills.This literature reviewevaluated whether current medical education literature supports or refutes the use of SPs compared to other modalities such as simulated patients (SiPs) and virtual reality (VR) in the improvement of student confidence, clinical performance, and interpersonal communication skills.The research questions posed for this review were as follows: do medical students in their first two years of education who have practiced skills using SPs have more self-confidence in their ability to perform skills on real patients than those students who did not use SPs, do medical students in their third and fourth years of medical school have higher clinical competency with sensitive patient examinations after using SPs in their first two years of medical education than those students who did not use SPs, and do medical students who have used SPs for discussing sensitive issues have better interpersonal skills when they encounter real patients in the clinical setting than those who have not used SPs? The methodology for this descriptive, systematic review of the literature was organized using a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flowchart to describe how articles were collected and synthesized to evaluate the variables under study.The results of this study revealed that students learned the most when SPs were used because they were able to teach students the skills that they needed in a safe learning environment. Medical students performing sensitive patient examinations with SPs learned not only how to perform the examinations but also how to improve their communication with patients. Students and residents reported increased confidence and clinical competence when performing new skills with SPs rather than with peer practice, virtual reality, orreal patients in a clinical setting. Although the utilization of SPs has been studied in multiple ways and found to be a powerful tool in the education of undergraduate medical students and interns, there is still much study to be done to address the human needs of real patients. Gaps in this literature included small sample sizes, a lack of standardized assessment tools, and the need to include a multidisciplinary approach that addresses cultural awareness and appreciation.The authors found limited studies analyzing the effect the coronavirus disease 2019 (COVID-19) pandemic had on the use of SPs in medical school education.Continued scientific inquiry in post-pandemicmedical education is an essential component for dissemination as most schools have reintroduced the use of SPs, which strengthens the concept that their use is superior to the other simulation methods used when SPs were not available.

Psychiatric comorbidities on an inpatient dermatology consultation service: A cross-sectional analysis.

Despite the high prevalence of psychiatric illness in hospitalised dermatology patients, characterisation of psychiatric comorbidities on an inpatient dermatology consultation service in the United States has yet to be performed. To fill this gap in knowledge, we investigated the prevalence of and factors associated with psychiatric illness on the inpatient dermatology consultation service at the University of Southern California. Of the 429 patients seen by the dermatology consultation service between June 2021 to July 2022, 147 (34%) had psychiatric illness (defined as having at least 1 psychiatric diagnosis). Increasing age was associated with a decreased likelihood of psychiatric illness, while housing instability, chronic dermatologic disease, drug reaction, and pruritus without rash were associated with an increased likelihood of psychiatric illness. The high prevalence of psychiatric illness observed in hospitalised dermatology patients emphasises the importance of collaboration between consultant dermatologists and mental health specialists, particularly when specific sociodemographic or disease factors are present.

Labor complaint could impact your school

Although the National Labor Relations Board's general counsel has long made it clear that she believes student‐athletes at colleges and universities should qualify as employees under the NLRA, a recent complaint has become the first case that will test that position before the NLRB and federal courts. On May 18, 2023, Region 31 of the NLRB issued an unfair labor practice complaint against the University of Southern California, the Pac‐12 Conference, and the NCAA. The complaint alleges that USC, the Pac‐12, and the NCAA are joint employers and have misclassified football and basketball players at USC as “non‐employees” in order to deprive them of their rights under Section 7 of the National Labor Relations Act.

Service-Learning Through Community-Based Nutrition Teaching Equips Medical Students With Sustained Nutrition Knowledge, Attitudes, and Habits

Introduction Nutrition education and counseling are critical to patient health. Primary care physicians are positioned to provide this counseling; however, due to a lack of nutrition education, many physicians-in-training lack these skills. This study evaluates the knowledge and self-efficacy of Keck School of Medicine (KSOM) of University of Southern California (USC) Primary Care Program (PCP) medical students after leading community-based nutrition classes. Methods First-year PCP KSOM students completed a survey immediately after teaching nutrition classes (Phase I: Spring 2017-Spring 2020) and 1-4 years after teaching (Phase II: August 2021). Open-ended responses were coded thematically, and descriptive data were analyzed in Qualtrics. Results There were 93 phase I respondents; however, not everyone answered every question. Among 45 question respondents, students reported learning about macronutrients (29%), portion sizes (16%), glycemic index (15%), and metabolic syndrome (12%). Among 57 question respondents, 49% reported having knowledge to now counsel patients about nutrition. There were 60 phase II respondents. Students reported sustained, increased nutrition knowledge (88%) and confidence (85%) from baseline, and making healthy personal dietary changes. Discussion It is important for physicians-in-training to gain nutrition education early in their career. This training can benefit student knowledge, behavior change, confidence, and their future patients through counseling.

A Smart Image Encryption Technology via Applying Personal Information and Speaker-Verification System

In this paper, a framework for authorization and personal image protection that applies user accounts, passwords, and personal I-vectors as the keys for ciphering the image content was developed and connected. There were two main systems in this framework. The first involved a speaker verification system, wherein the user entered their account information and password to log into the system and provided a short voice sample for identification, and then the algorithm transferred the user’s voice (biometric) features, along with their account and password details, to a second image encryption system. For the image encryption process, the account name and password presented by the user were applied to produce the initial conditions for hyper-chaotic systems to generate private keys for image-shuffling and ciphering. In the final stage, the biometric features were also applied to protect the content of the image, so the encryption technology would be more robust. The final results of the encryption system were acceptable, as a lower correlation was obtained in the cipher images. The voice database we applied was the Pitch Tracking Database from the Graz University of Technology (PTDB-TUG), which provided the microphone and laryngoscope signals of 20 native English speakers. For image processing, four standard testing images from the University of Southern California–Signal and Image Processing Institute (USC-SIPI), including Lena, F-16, Mandrill, and Peppers, were presented to further demonstrate the effectiveness and efficiency of the smart image encryption algorithm.

Robert Hellyer. Green with Milk and Sugar: When Japan Filled America’s Tea Cups.

Journal Article Robert Hellyer. Green with Milk and Sugar: When Japan Filled America’s Tea Cups. Get access Robert Hellyer. Green with Milk and Sugar: When Japan Filled America’s Tea Cups. New York: Columbia University Press, 2021. Pp. xiv, 283. Cloth $32.00. Rebecca Corbett Rebecca Corbett University of Southern California, US Email: rcorbett@usc.edu Search for other works by this author on: Oxford Academic Google Scholar The American Historical Review, Volume 128, Issue 2, June 2023, Pages 979–980, https://doi.org/10.1093/ahr/rhad165 Published: 22 June 2023

MQM 2022: The 10th Triennial Conference on Molecular Quantum Mechanics.

ADVERTISEMENT RETURN TO ISSUESpecial Issue Prefac...Special Issue PrefaceNEXTMQM 2022: The 10th Triennial Conference on Molecular Quantum MechanicsT. Daniel Crawford*T. Daniel CrawfordDepartment of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, USA*E-mail: [email protected]More by T. Daniel Crawfordhttps://orcid.org/0000-0002-7961-7016, Anna I. KrylovAnna I. KrylovDepartment of Chemistry, University of Southern California, Los Angeles, California 90089, USAMore by Anna I. Krylovhttps://orcid.org/0000-0001-6788-5016, Henry F. Schaefer IIIHenry F. Schaefer IIICenter for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USAMore by Henry F. Schaefer IIIhttps://orcid.org/0000-0003-0252-2083, and Troy Van VoorhisTroy Van VoorhisDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USAMore by Troy Van Voorhishttps://orcid.org/0000-0001-7111-0176Cite this: J. Phys. Chem. A 2023, 127, 23, 4897–4900Publication Date (Web):June 15, 2023Publication History Received9 May 2023Published online15 June 2023Published inissue 15 June 2023https://doi.org/10.1021/acs.jpca.3c03059Copyright © Published 2023 by American Chemical SocietyRIGHTS & PERMISSIONSArticle Views-Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (1 MB) Get e-Alertsclose Get e-Alerts

Choosing Wisely interventions to reduce antibiotic overuse in the safety net.

Physician pay-for-performance (P4P) programs frequently target inappropriate antibiotics. Yet little is known about P4P programs' effects on antibiotic prescribing among safety-net populations at risk for unintended harms from reducing care. We evaluated effects of P4P-motivated interventions to reduce antibiotic prescriptions for safety-net patients with acute respiratory tract infections (ARTIs). Interrupted time series. A nonrandomized intervention (5/28/2015-2/1/2018) was conducted at 2 large academic safety-net hospitals: Los Angeles County+University of Southern California (LAC+USC) and Olive View-UCLA (OV-UCLA). In response to California's 2016 P4P program to reduce antibiotics for acute bronchitis, 5 staggered Choosing Wisely-based interventions were launched in combination: audit and feedback, clinician education, suggested alternatives, procalcitonin, and public commitment. We also assessed 5 unintended effects: reductions in Healthcare Effectiveness Data and Information Set (HEDIS)-appropriate prescribing, diagnosis shifting, substituting antibiotics with steroids, increasing antibiotics for ARTIs not penalized by the P4P program, and inappropriate withholding of antibiotics. Among 3583 consecutive patients with ARTIs, mean antibiotic prescribing rates for ARTIs decreased from 35.9% to 22.9% (odds ratio [OR], 0.60; 95% CI, 0.39-0.93) at LAC+USC and from 48.7% to 27.3% (OR, 0.81; 95% CI, 0.70-0.93) at OV-UCLA after the intervention. HEDIS-inappropriate prescribing rates decreased from 28.9% to 19.7% (OR, 0.69; 95% CI, 0.39-1.21) at LAC+USC and from 40.9% to 12.5% (OR, 0.72; 95% CI, 0.59-0.88) at OV-UCLA. There was no evidence of unintended consequences. These real-world multicomponent interventions responding to P4P incentives were associated with substantial reductions in antibiotic prescriptions for ARTIs in 2 safety-net health systems without unintended harms.

Unpacked: A History of Caribbean Tourism. By Blake C. Scott

Journal Article Unpacked: A History of Caribbean Tourism. By Blake C. Scott Get access Unpacked: A History of Caribbean Tourism. By Blake C. Scott (Ithaca, NY: Cornell University Press, 2022. 258 pp. $29.95). Stanley Fonseca Stanley Fonseca University of Southern California sfonseca@usc.edu https://orcid.org/0000-0003-2853-4701 Search for other works by this author on: Oxford Academic Google Scholar Journal of Social History, shad024, https://doi.org/10.1093/jsh/shad024 Published: 12 June 2023

The Impact of the COVID-19 Pandemic on Sense of Belonging and Science Outcomes among Biomedical Science Students: A Longitudinal Study.

To understand how COVID-19 impacted undergraduate research experiences (URE), the current study examined how student outcomes changed over time among biomedical science majors. In addition, this study describes how a Building Infrastructure Leading to Diversity (BUILD) Promoting Opportunities for Diversity in Education and Research (PODER) URE program shifted entirely online in response to COVID-19. Biomedical science majors at a university in Southern California completed surveys in 2019 and 2020 and rated their science identity, science self-efficacy, and academic self-concept. We examined how scores changed over time by comparing: (1) BUILD and non-BUILD students and (2) students from underrepresented groups (URG) and non-URG students. Sense of belonging scores from 2020 were also compared among BUILD and non-BUILD students. BUILD students reported a significant increase in science self-efficacy scores, unlike non-BUILD participants. BUILD students also increased their science identity scores, unlike non-BUILD participants. Differences in sense of belonging were not significant, and differences between URG and non-URG students were not significant. Given the importance of science self-efficacy and science identity in a student's academic trajectory, our results indicate that UREs such as BUILD PODER were able to improve or maintain critical student outcomes during a pandemic. These results highlight the importance of URE participation among biomedical science majors.

An Enhanced Data Transmission in Mobile Banking Using LSB-AES Algorithm

The advent of mobile banking applications has transformed the way customers’ access banking services from brick-and-mortar to remote banking. The ubiquitous nature of this innovation has encouraged its adoption. This is because of improved banking services and accessibility to the services on a 24/7 basis using the internet. However, mobile banking applications are susceptible to numerous security threats and vulnerabilities that adversaries take advantage of to siphon money from bank customers. The aim of this study is to design and evaluate least significant bit and advanced encryption standard cryptography (LSB-AES) hybrid algorithm to protect data on transmission in mobile banking. This study employs data science research design, and performance evaluations demonstrated through simulations using MATLAB. Findings of this study can be applied to banks offering mobile banking across the world. This study utilized six color images from University of Southern California’s Signal and Image Processing Institute (USC-SIPI) dataset which were stored in Tagged Image File Format (TIFF). Contemporary steganographic systems utilize a minimum of 2 to 10 images for test simulations. Visual quality analysis of cover images and stego images was done using the following evaluation metrics: Mean Squared Error (MSE), Peak Signal-to-Noise Ratio (PSNR), and histogram analysis. Security of the proposed algorithm was done using entropy analysis. MSE values of cover and stego images should be closer to zero and indicate that cover image is of good quality for embedding data. On the other hand, PSNR values should be more than 40 decibel (dB) which indicates good imperceptibility. Histogram analysis should demonstrate no visible distortions between the cover and stego image for it to be free from statistical attacks. Entropy analysis should yield values close to 8 for the algorithm to be robust. Results from the proposed LSB-AES hybrid algorithm evaluation metrics reveals that Mean Squared Error (MSE) values ranges from 0.0001297 to 0.0005646 while Peak Signal-to-Noise Ratio (PSNR) values ranges from 80.65 to 87.71 and entropy values ranges from 6.295 to 7.762. Histogram analysis reveals that the cover and stego images are almost similar. These results infer that the proposed algorithm has good quality images with good imperceptibility and that the proposed algorithm is reliable, robust and secure for mobile banking. Entropy and histogram analysis results show that the proposed algorithm is resistant to Man-in-the-Middle attacks. This study recommends that legislation evaluates and amends security of mobile banking policies so that the proposed LSB-AES hybrid algorithm can be adopted as a secure solution for mobile banking.

Absolute lymphocyte counts (ALC) recovery and risk of viral reactivation in the setting of haploidentical hematopoietic stem cell transplant.

e19065 Background: The impact of early absolute lymphocyte repopulation after allogeneic hematopoietic stem cell transplant has historically been shown to predict the risk of post-transplant infection, and subsequently, non-relapse mortality (NRM). Previous studies have shown that ALC recovery after allogeneic stem cell transplant is associated with risk of viral reactivation and survival. In this study we aim to investigate the role of ALC recovery in the contemporary era with myeloablative haploidentical hematopoietic stem cell transplant (HI-HSCT). Methods: We retrospectively analyzed adult patients at University of Southern California (USC) Norris Cancer Hospital who received myeloablative conditioning haplo-HSCT (Fludarabine with 12 Gy of radiation) from 2014 to 2020. The primary endpoint was correlation between ALC recovery day 21 and risk of viral reactivation including cytomegalovirus (CMV), Epstein-Barr Virus (EBV) and BK virus. ALC recovery cut off was chosen to be 175/uL on day +21 and 500/uL on day +60 based on prior reports. Results: 58 patients were identified as recipients of MAC haploidentical-HSCT. 17 had ALC recovery at day +21. Mean age was 49 years, 31 (53.4%) were males and 27 (46.6%) were females. 41 (70%) patients were Hispanic, 12 (20%) were non-Hispanic White, and the majority had AML (51%). 76% received &gt; 5*106/kg CD34+ cell dose and 78% received CD3 + cell dose &lt; 3*108/kg. Serum CMV, EBV and urine BK virus were detected in 38 (65.5%), 8 (15.7%) and 11 (32.4%) respectively. Clinically significant CMV reactivation (required treatment with antiviral therapy) was detected in 26 (44.8%) patients. Lack of ALC recovery on day +21 did not show correlation with CMV, EBV and BK virus reactivation. Also, the risk of CMV reactivation was not related to day +60 ALC recovery (p-value = 0.469). On univariate analysis, ALC recovery day +21, day +60, and CMV reactivation did not show correlation with overall survival. In multivariate analysis when adjusted for age and pre-transplant CMV status, higher CD 3+ cell dose of &gt; 3*108/kg was associated with reduced risk of CMV reactivation HR = 0.35 (0.15-0.85) p-value = 0.02. Conclusions: Previous studies have established ALC recovery as a predictor of better outcome. This has not been established in patients undertaking myeloablative HI-HSCT. Our study shows that lack of ALC recovery on day +21 does not affect CMV, EBV and BK virus reactivation and risk of CMV reactivation does not correlate with day +60 ALC recovery. Also, ALC recovery and CMV reactivation does not impact overall survival. The use of Letermovir, effective CMV therapies and close viral surveillance in contemporary practice is likely responsible for mitigating poor outcomes with CMV reactivation. Graft composition needs to be studied prospectively, as higher CD3+ cell dose may present an opportunity to reduce CMV reactivation in HI-HSCT.

EphrinB2 (B2) expression predicts poor response to PD1/L1 antibodies (Ab) in metastatic urothelial carcinoma (mUC).

4575 Background: B2 is a ligand for EphB4 which enhances tumor invasion, proliferation, survival and promotes angiogenesis. A prior analysis of TCGA data from 409 muscle invasive bladder cancer (MIBC) patients (pts) demonstrated that high (34%) B2 gene expression had poor survival vs. low (66%) expression (Hazard Ratio 0.7 p = 0.02). Our phase II trial of sEphB4-HSA (JCO PMID 35984996) which targets B2, in combination with pembrolizumab in previously treated mUC (N=70) demonstrated an objective response rate (ORR) of 37%. Among pts with high expression of B2, ORR was 52% with 24% complete response (CR). This retrospective study examined the ORR to PD1/L1 Ab in pts with mUC and its correlation with B2 mRNA expression. Methods: Pts with mUC who had received anti PD1/L1 Ab were eligible if they had radiographic response data and tumor tissue for B2 testing. Pts’ demographics and disease characteristics were abstracted. Radiographic images were reviewed using RECIST 1.1. Tumor specimens were analyzed for intensity of B2 expression using in-situ hybridization (ISH). Scores of 2-4 were considered High (Hi) and 0-1 were considered Low (Lo) expression. Standard descriptive statistics were used to summarize study results. Fisher’s exact test was used to test the association of ORR with B2 expression using SAS 9.4. Results: 120 (N) pts from University of Southern California (USC, n=49), Dana Farber (DFCI, n=55), and University of Colorado (UC, n=16) met were included. 88 pts were male (73%). Median age was 72. PD1/L1 Ab were administered in the post-platinum progressive disease (n=95, 79%) and first-line setting (n=25, 21%) and included pembrolizumab (n=88, 73%), atezolizumab (n=26, 22%) and nivolumab, avelumab, and durvalumab, 3%, 1%, and 1%, respectively. Objective response rate (ORR) defined as radiographic CR plus partial response (PR) were calculated and summarized. Among all pts (N=120), ORR was 20% (95% CI 13-28). 62% had B2 Hi expression with a response rate of 12%, and 38% had B2 Lo expression with a response rate of 33%, p=0.009). These proportions were similar for each institution. Conclusions: In addition to conferring poor prognosis in MIBC, B2 expression is associated with poor ORR to PD1/L1 Ab monotherapy in mUC. Given that the combination of B2 inhibition &amp; pembrolizumab was more active in B2 expressing mUC, these data provide further rationale for investigating B2 as a mechanism of resistance to PD1/L1 ab, biomarker of response and a therapeutic target. [Table: see text]

Study Investigates Ineffectiveness of Acid Fracturing for Tight Reservoir Rock

_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 209264, “Ineffectiveness of Acid Fracturing for Stimulating a Tight Fractured Reservoir Rock: A Case Study,” by Huda R. Al-Enezi, Kuwait Oil Company, and Iraj Ershaghi, SPE, University of Southern California. The paper has not been peer reviewed. _ The complete paper describes the analysis of actual performance data for acid fracturing in a tight carbonate formation and the ineffectiveness of the process as measured by the performance responses of the producing wells. An included case study relates to a tight formation that is considered a reservoir rather than a source rock. The formation permeability is in the range of 0.1–5 md. Development has been through numerous horizontal wells with limited multistage acid stimulation. Analysis of performance data for more than 30 wells indicates no fracture flow and very limited stimulated production. Background A category of tight conventional reservoir rocks exists that has not been subjected to horizontal drilling and multistage fracturing. The objective of the authors’ study is to analyze the ineffectiveness of treatment response under acid fracturing and explore the potential of implementing multistage fracturing for a tight reservoir rock using experience gained from unconventional resources. The subject reservoir is a tight carbonate of the Middle Cretaceous age with porosity ranges between 15 and 19% and an average thickness of approximately 90 ft. Oil viscosity ranges between 2.06 and 2.54 cp and average oil gravity is 25° API. The reservoir is a depletion-drive type where the main natural energy is provided by gas in solution. Among the initial wells, only six were successful. The field is very complex, based on stratigraphic and structural characteristics. The first horizontal well was drilled during 2015–16 and was subjected to seven-stage acid fracturing. This resulted in a substantial increase of well cumulative production compared with that of vertical wells. The development plan of this field was implemented with horizontal wells with laterals extending approximately 3,000 ft. Each well was subjected to multistage acid fracturing. Examination of performance data indicated that producing wells suffered from rapid pressure depletion after a production period of 3–6 months. Wells cease natural flow and cannot sustain production even after what is considered acid fracturing without the help of artificial lift. Conventional production plots show that typical performance begins with a high initial rate for a short duration followed by a sharp decline before a stabilization period. To improve and recommend a proper hydraulic fracture design, the authors studied the effectiveness of current stimulation to develop alternative improvement procedures. Methodology The effectiveness of acid stimulation was analyzed and evaluated by using historical production for 4 years. To study the initial rates seen on these horizontal wells, a productivity-prediction tool was used to inversely compute the effective formation-permeability responsible or the observed initial production on these wells. Production data were used to inversely calculate the geometrical averaged permeability from initial field-production data assuming that the initial conditions followed a steady-state regime.

Review: Specworld: Folds, Faults, and Fractures in Embedded Creator Industries, by John Thornton Caldwell

Book Review| June 01 2023 Review: Specworld: Folds, Faults, and Fractures in Embedded Creator Industries, by John Thornton Caldwell Specworld: Folds, Faults, and Fractures in Embedded Creator Industries, by John Thornton Caldwell J. D. Connor J. D. Connor J. D. CONNOR is an associate professor in the Division of Cinema and Media Studies at the University of Southern California. He is the author of Hollywood Math and Aftermath: The Economic Image and the Digital Recession and The Studios after the Studios: Neoclassical Hollywood, 1970–2010. Search for other works by this author on: This Site PubMed Google Scholar BOOK DATA John Thornton Caldwell, Specworld: Folds, Faults, and Fractures in Embedded Creator Industries. Oakland: University of California Press, 2023. $85 cloth; $29.95 paper. 400 pages. Film Quarterly (2023) 76 (4): 101–103. https://doi.org/10.1525/fq.2023.76.4.101 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation J. D. Connor; Review: Specworld: Folds, Faults, and Fractures in Embedded Creator Industries, by John Thornton Caldwell. Film Quarterly 1 June 2023; 76 (4): 101–103. doi: https://doi.org/10.1525/fq.2023.76.4.101 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentFilm Quarterly Search BOOK DATA John Thornton Caldwell, Specworld: Folds, Faults, and Fractures in Embedded Creator Industries. Oakland: University of California Press, 2023. $85 cloth; $29.95 paper. 400 pages. There’s a way to approach John Thornton Caldwell’s Specworld: Folds, Faults, and Fractures in Embedded Creator Industries as another of his characteristically decisive interventions in cinema and media studies driven by his decades of ethnographic work. Specworld is that, but that isn’t how it manifests, nor is that why—for most readers of Film Quarterly—it matters. What he calls “specwork” he describes as a “widely dispersed conceptualizing process” that “may be as central to the core of television/media production today as the industrial and material production of series, formats, and network programming once was” (57). Specworld is the third in the author’s trilogy of ethnographies that include Televisuality and Production Culture. Caldwell’s efforts take their place in a century of thinking through... You do not currently have access to this content.

Reply: Do we need new MRI criteria for diagnosing radiologically isolated syndrome?

Journal Article Accepted manuscript Reply: Do we need new MRI criteria for diagnosing radiologically isolated syndrome? Get access Christine Lebrun-Frenay, Christine Lebrun-Frenay Neurologie CHU Nice, Hôpital Pasteur2, UMR2CA-URRIS, Université Côte d’Azur, 06002 Nice, France Correspondence to: Christine Lebrun-Frenay, MD, Neurologie CHU Nice, CRCSEP. Hôpital Pasteur2, 30 voie Romaine, 06002 Nice, France E-mail: lebrun-frenay.c@chu-nice.fr https://orcid.org/0000-0002-3713-2416 Search for other works by this author on: Oxford Academic PubMed Google Scholar Orhun H Kantarci, Orhun H Kantarci Neurology, Mayo Clinic, Rochester, MN 55905, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Aksel Siva, Aksel Siva Istanbul University Cerrahpasa School of Medicine - Department of Neurology, Istanbul, 34098, Turkey Search for other works by this author on: Oxford Academic PubMed Google Scholar Daniel Pelletier, Daniel Pelletier Keck School of Medicine. University of Southern California, Los Angeles, CA 90033, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Darin T Okuda on behalf of RISConsortium Darin T Okuda The University of Texas Southwestern Medical Center, Neuroinnovation Program, Multiple Sclerosis, and Neuroimmunology Imaging Program, Dallas, TX 75390, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Brain, awad186, https://doi.org/10.1093/brain/awad186 Published: 01 June 2023 Article history Received: 26 May 2023 Accepted: 28 May 2023 Published: 01 June 2023

The Need for Speed and Energy Efficiency in Genome Analysis

The Need for Speed and Energy Efficiency in Genome Analysis

Review: Atmospheres of Projection: Environmentality in Art and Screen Media, by Giuliana Bruno

Book Review| June 01 2023 Review: Atmospheres of Projection: Environmentality in Art and Screen Media, by Giuliana Bruno Atmospheres of Projection: Environmentality in Art and Screen Media, by Giuliana Bruno Josh Martin Josh Martin JOSH MARTIN is an MA student in Cinema and Media Studies at the University of Southern California. His research principally explores the aesthetics and politics of slowness, temporality, and the everyday. Search for other works by this author on: This Site PubMed Google Scholar BOOK DATA Giuliana Bruno, Atmospheres of Projection: Environmentality in Art and Screen Media. Chicago: University of Chicago Press, 2023. $45.00 cloth; $44.99 pdf; $44.99 e-book. 360 pages. Film Quarterly (2023) 76 (4): 109–111. https://doi.org/10.1525/fq.2023.76.4.109 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation Josh Martin; Review: Atmospheres of Projection: Environmentality in Art and Screen Media, by Giuliana Bruno. Film Quarterly 1 June 2023; 76 (4): 109–111. doi: https://doi.org/10.1525/fq.2023.76.4.109 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentFilm Quarterly Search BOOK DATA Giuliana Bruno, Atmospheres of Projection: Environmentality in Art and Screen Media. Chicago: University of Chicago Press, 2023. $45.00 cloth; $44.99 pdf; $44.99 e-book. 360 pages. In her introduction to Atmospheres of Projection: Environmentality in Art and Screen Media, Giuliana Bruno revisits the myth of Dibutades, the tale of a Corinthian woman’s attempts to capture the image of the man she loves. Bruno notes that this first-century story has often been situated as an origin point for the act of painting, drawing, or imaging (1). Complicating this origin story, Bruno instead suggests that Dibutades committed a precinematic “act of projection” by experimenting with luminosity. Moreover, Bruno asserts that artistic renderings of Dibutades emphasize projection as an environment, an “affective atmosphere” that enables “a transmission of affect” (2). Through this myth and its relationship to modern understandings of cinematic projection, Bruno explores the “projective imagination” and the many... You do not currently have access to this content.