4,936 research outputs found
Towards near-real-time detection of insider trading behaviour through social networks
No full textCombining several theories concerning individual and group behaviour within social networks could help us spot unacceptable behaviour, such as insider trading. Social Network Analysis (SNA) helps us understand how people interact. Behaviour theory explains how individual humans behave and how we can differentiate usual and unusual behaviour. Co-ordination theory helps us understand the flow of control and group behaviour. Combining them can help us answer important questions, such as how actors in a social structure behave, co-ordinate and connect. But how can we spot abnormal behaviour by a group or an individual? Sumit Gupta and Liaquat Hossain suggest one way of achieving this in the fight against insider trading. The monitoring of capital frauds and malicious trading behaviours, and implementing changes to correct traders' and firms' behaviour, is increasingly seen as a priority in today's financial markets. Many governments and financial institutions are investing capital and resources to maintain the integrity of their markets and promote fair-trade practices. Of all the capital scams, insider trading is one of the hardest to detect and therefore the most difficult to prove in a court of law. © 2011 Elsevier Ltd.link_to_subscribed_fulltex
A client oriented, IP level redirection mechanism
No full textA Client Oriented, IP Level Redirection Mechanism. (August 1998) Sumit Gupta, B.Tech., Indian Institute of Technology, Kanpur, India Chair of Advisory Committee: Dr. A.L. Narasimha Reddy This thesis introduces a new approach for implementing transparent client access to network services. Ever increasing load on the Internet has made it essential to design services that are fast, reliable, easily manageable, transparent to access, and that can scale gracefully with load. A common way of achieving this has been replicating services across multiple servers and redirecting clients to different servers depending upon various criteria. Existing schemes are either entirely server or network based and have many drawbacks. This scheme involves the client network layer actively in redirection. The thesis describes the redirection protocol in detail and the basic implementation of the testbed. The performance of the mechanism is measured by experiments on the testbed and analyzed. The advantages ..
Data for Gupta et al., "Estimating the Meridional Extent of Adiabatic Mixing in the Stratosphere using Age-of-Air", JGR:Atmospheres,
No full textModel data and post-processed data supporting the creation of the manuscript "Estimating the Meridional Extent of Adiabatic Mixing in the Stratosphere using Age-of-Air" submitted to JGR:Atmospheres in August 2022.
1) The netCDF files created through post-processing of full model data in FORTRAN are shared in the /data/ directory. These file contains the zonal mean circulation statistics based on Gupta et al. (2020), age-of-air transport diagnostics based on Linz et al. (2021), and the novel \Gamma-\Theta circulation streamfunction introduced in this study. The /data/ directory also contains MATLAB .mat data files for the transport diagnostics obtained from WACCM. 150 days of actual GFDL-FV3 model data in the northern hemisphere, between 0.1 hPa-500 hPa pressure levels is also provided to support external computations and validation.
2) The Jupyter notebook used for final computation and figures production is provided in .ipynb, .html and .pdf formats in /code/. All the files referred to in the notebook are stored in the /data/ directory.
Corresponding author : Aman Gupta, [email protected], [email protected], [email protected]
Socio-Psychological Profile of Olympic Bronze Medallist Hockey Player Mr Sumit Valmiki: A Case Study
No full textPurpose: -Games and Sports play a significant role in society, to promote physical fitness, to give them entertainment, and to develop a sense of community. They have the power to inspire and unite people across cultures and contribute to personal and societal well-being. Games and Sport is considered one of the foundational pillars of the holistic advancement of civilized societies. The aim of the Researchers was to explore the Socio-Psychological Factors and experiences that have influenced Mr. Sumit Valmiki\u27s performance and success as an Olympic Bronze Medalist Methodology: - The original information was collected from the subject as a primary source. Researchers used the “Frustration Test” by Dr N. S Chauhan and Dr. Govind Tiwari, the “Self-Confidence Inventory” Developed by Rekha Gupta, “Sports Achievement Motivation Questionnaire” by M.L. Kamlesh, and the “Aggression Questionnaire by Km. Roma Pal is a tool for the collection of the data in this study. Result: -By applying the above-mentioned tools and analyzing the collected data, it was found that Mr. Sumit Valmiki possesses unique characteristics, outstanding abilities, extraordinary potential, and excellent Hockey-playing qualities. Further, it has been found that he is having an optimal level of Frustration and an average level of Self-Confidence and the ability to be confident in difficult situations and to solve problems. Conclusion It has also been found that he is having High levels of Sports Achievement Motivation. He has the ability to develop competence for success within his chosen field. He is also having a low level of Aggression and the ability to remain cool and calm
Corrigendum: Capital Inflows and House Prices: Aggregate and Regional Evidence from China
No full textIn the paper ‘Capital Inflows and House Prices: Aggregate and Regional Evidence from China’ by H. An, et al., printed in the December 2016 issue, there was a missing acknowledgement section for funding resources.
On page 451, the acknowledgement section should appear after the corresponding information as:
“Correspondence: Rakesh Gupta, Department of Accounting, Finance and Economics, Griffith Business School, Griffith University, Nathan Campus QLD 4111. [email protected]
*This work was financially supported by the Humanities and Social Science Foundation of Ministry of Education of China (16YJA790001).”
The author apologises for this error and any confusion it may have caused.No Full Tex
First person – Akash Gupta
No full textFirst Person is a series of interviews with the first authors of a selection of papers published in Biology Open, helping early-career researchers promote themselves alongside their papers. Akash Gupta is first author on ‘A novel and cost-effective ex vivo orthotopic model for the study of human breast cancer in mouse mammary gland organ culture’, published in BiO. Akash conducted the research described in this article while a PhD Scholar in Rajendra Mehta's lab at IIT Research Institute, Chicago, USA. He is now an assistant research scientist in the lab of Syreeta L. Tilghman at the University of Arizona, Department of Medicine, Tucson, USA, investigating drug efficacy modeling using human organoids culture for the treatment of cancers
Web-based accurate measurements of carotid lumen diameter and stenosis severity: An ultrasound-based clinical tool for stroke risk assessment during multicenter clinical trials
No full textBackground This pilot study presents a completely automated, novel, smart, cloud-based, point-of-care system for (a) carotid lumen diameter (LD); (b) stenosis severity index (SSI) and (c) total lumen area (TLA) measurement using B-mode ultrasound. The proposed system was (i) validated against manual reading taken by the Neurologist and (ii) benchmarked against the commercially available system. Method One hundred patients (73 M/27 F, mean age: 68 ± 11 years), institutional review board approved, written informed consent, consisted of left/right common carotid artery (200 ultrasound scans) were acquired using a 7.5-MHz linear transducer. Results The measured mean LD for left and right carotids were (in mm): (i) for proposed system (6.49 ± 1.77, 6.66 ± 1.70); and (ii) for manual (6.29 ± 1.79, 6.45 ± 1.63), respectively and coefficient of correlation between cloud-based automated against manual were 0.98 (P < 0.0001) and 0.99 (P < 0.0001), respectively. The corresponding TLA error, Precision-of-Merit, and Figure-of-Merit when measured against the manual were: 4.56 ± 3.54%, 96.18 ± 3.21%, and 96.85%, respectively. The AUC for the receiving operating characteristics for the cloud-based system was: 1.0. Four statistical tests such as: Two-tailed z-test, Mann-Whitney test, Kolmogorov-Smirnov (KS) and one-way ANOVA were performed to demonstrate consistency and reliability. Conclusions The proposed system is reliable, accurate, fast, completely automated, anytime-anywhere solution for multi-center clinical trials and routine vascular screening
IMPACT: Prevalence and Predictors of High-Intensity End-of-Life Care Among Adolescents and Young Adults with Cancer in Ontario
No full textAdolescents and young adults (AYA) with cancer may experience disproportionate rates of high-intensity (HI) end-of-life (EOL) care. We conducted a population-based linkage study examining a decedent cohort of all Ontario AYA aged 15-21 years diagnosed with six primary cancers between 1992-2012. The primary composite outcome (HI-EOL care) included any of: intravenous chemotherapy ≤14 days from death; >1 emergency department visit; >1 hospitalization; or any intensive care unit (ICU) admission ≤30 days from death. Secondary outcomes included hospital deaths and measures of most invasive (MI)-EOL care. The outcome prevalence trends were examined, as were the predictors using regression models. Of 483 patients, 292 (60.5%) experienced HI-EOL care. AYA with hematological malignancies and relapsed disease experienced the highest and lowest odds of all outcomes, respectively. The prevalence of MI-EOL care may be increasing, especially for pediatric patients. This work is the first to identify LOC-based disparities in AYA EOL care
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