About

Professor Ravi Bapna is the Curtis L. Carlson Chair in Business Analytics and Information Systems and serves as the Academic Director of the Carlson Analytics Lab at the Carlson School of Management. He is closely affiliated with the school's MS in Business Analytics program and the Carlson Analytics Lab, where graduate students study a broad range of data analysis techniques and apply them to real business problems. These students are skilled in exploratory data visualization, predictive analytics, programming, data engineering, machine learning methods, and more, emerging as data science professionals. Partner organizations have the opportunity to work with these talented students while supporting the educational mission of the programs. The faculty involved in the Analytics for Good Institute include scholars from across the Carlson School and beyond, bringing expertise in computer science, econometrics, strategy, causal experimentation, and other fields. The institute emphasizes impact, engagement, and collaboration, leveraging the collective expertise of faculty members such as Sofia Bapna, Saif Benjaafar, Alan Benson, Xuan Bi, Jason Chan, Shawn Curley, Russell Funk, Alok Gupta, De Liu, Paul Ma, Colleen Flaherty Manchester, Gautam Ray, Yuqing Ren, Soumya Sen, Yicheng Song, Mani Subramani, Joel Waldfogel, Steven Wu, and Yi Zhu. The institute's mission focuses on applying analytics for societal good, fostering impact and engagement through research, teaching, and partnerships.

Research topics

• Medicine
• Botany
• Clinical psychology
• Business
• Internal medicine
• Psychiatry
• Biology

Selected publications

• Euphorbia Antidote: An Important Remedy to Keep on Hand

  Cactus and Succulent Journal · 2024

  1st authorCorresponding
  • Business
  • Botany
  • Biology
  PublisherDOI

• Pellet Egestion by a Captive Chimney Swift (chaetura Pelagica)

  Digital Commons - University of South Florida (University of South Florida) · 2024-09-08

  articleOpen access1st authorCorresponding

  over the ridge above the nest.This would appear to be paradoxical behavior, for the nutcracker is the greater threat to the welfare of the nest.

  PublisherOA PDF

• The effectiveness of microcurrent neurofeedback on depression, anxiety, post-traumatic stress disorder, and quality of life

  Journal of the American Association of Nurse Practitioners · 2023 · 4 citations

  • Medicine
  • Psychiatry
  • Clinical psychology

  BACKGROUND: The world faces a mental health crisis with elevated rates of depression, anxiety, and post-traumatic stress, leaving a profound impact on daily quality of life (QOL). Current treatments show varying degrees of efficacy and carry burdensome challenges. Evidence exists for use of an innovative neurotechnology to reduce symptoms of depression, anxiety, and post-traumatic stress disorder (PTSD), but the science is lacking for use in the general population. PURPOSES: The purpose of this pilot study was to explore the effects of microcurrent neurofeedback on depression, anxiety, PTSD symptoms, and QOL in adults. METHODOLOGY: This was a one-group, exploratory pilot study that tested outcomes of depression, anxiety, PTSD risk, suicide risk, and QOL in 20 adults using convenience sampling. IASIS microcurrent neurofeedback (I-MCN) was the intervention that was delivered twice a week for 10 weeks; data collection was baseline, 5 weeks, and 10 weeks. RESULTS: Depression, anxiety, PTSD risk, and QOL improved significantly by the 10th and 20th session; suicidal risk showed nonsignificant reduction. Use of a more feasible interventional procedure established a foundation for use in clinical settings for the population. CONCLUSIONS: Using a more simpler procedure than what was used in a previous study reflected positive outcomes earlier and sustained over 10 weeks. This safe and effective technology carries rare but easily overcome adverse effects and could be an alternative to existing treatments or treatment-resistant conditions. IMPLICATIONS: Advanced practice nurses can apply the evidence to reduce symptoms of depression, anxiety, and PTSD. Randomized controlled trials and testing on diverse populations are needed.

  PublisherDOI

• Neurotensin and cholecystokinin contract gallbladder circular muscle in chickens

  Poultry Science · 2013-07-19 · 4 citations

  articleOpen access

  The contractile effects of neurotensin (NT) and cholecystokinin octapeptide (CCK-8) on isolated circular smooth muscle strips of chicken gallbladder were investigated. The NT (0.25-300 nM) produced concentration-dependent contractions on smooth muscle with an EC50 of 8.5 nM (95% confidence limits = 5.3-13.6 nM). In comparison, CCK-8 produced concentration-dependent contractions with an EC50 of 13 nM (95% confidence limits of 9-20 nM). There were no statistical differences in contractile responses when comparing NT and CCK-8 at equimolar concentrations. The NT appears to act directly on smooth muscle tissue in the chicken; the contractile responses were not blocked by 10 µM atropine or tetrodotoxin. A portion of the activity is mediated by extracellular calcium as 100 nM nifedipine inhibited 30% of peptide-induced muscle tension. The NT receptor (NTR) type 1 antagonist SR 48692 (0.1 µM) did not significantly reduce NT potency. The contractile effects of CCK-8 remained unaltered in tissues pretreated with atropine, TTX, or nifedipine. The CCK-A antagonist lorglumide, at a concentration of 1 µM, reduced the contractile potency of CCK-8 by one-half. Avian receptors for NT and CCK may differ pharmacologically from their mammalian counterparts, but their contractile actions on the gallbladder resulting in increased biliary output by flow are further evidence of their role in the postprandial regulation of lipid digestion in chickens.

  PublisherOA PDFDOI

• Release of avian neurotensin in response to intraluminal contents in the duodenum of chickens

  Poultry Science · 2013-01-09 · 7 citations

  articleOpen accessSenior author

  Peripheral and hepatic-portal plasma levels of neurotensin (NT) in fed and fasted chickens were determined using RIA. Portal levels of NT(1-13) (fed = 61.3 ± 3.9 fmol/mL; fasted = 44.5 ± 3.9 fmol/mL) were significantly higher than peripheral levels (fed = 8.2 ± 3.3 fmol/mL; fasted = 7.8 ± 3.0 fmol/mL) collected from the wing vein, indicating that some NT is metabolized in the liver. Portal plasma levels of NT collected from fed birds were also significantly higher than portal plasma levels of NT collected from fasted birds. Neurotensin, as identified by HPLC, exhibited a 2-fold increase in plasma extracts following perfusion of the proximal ileum with a 10-mg sample of oleic acid, as compared with control samples of plasma collected before oleic acid perfusion. In whole-animal studies, the injection of a micellar solution of oleic acid into isolated segments of the duodenum resulted in elevated plasma immunoreactive NT in blood collected from the pancreaticoduodenal vein. Injection of a 1,000 mOsm sodium chloride solution had a slightly lesser and delayed effect compared with oleic acid, but a greater effect than 0.1 N hydrochloric acid in isotonic saline solution. Injection of an amino acid solution (10% Travasol), 300 mOsm glucose solution, or pure corn oil had no effect. These results demonstrate that intraduodenal oleic acid is a potent stimulus for the release of NT from the duodenum into the hepatic-portal circulation of chickens.

  PublisherOA PDFDOI

• Susceptibility of North-American and European crickets to Acheta domesticus densovirus (AdDNV) and associated epizootics

  Journal of Invertebrate Pathology · 2010-12-16 · 108 citations

  article
  PublisherDOI

• Neurotensin elevates hepatic bile acid secretion in chickens by a mechanism requiring an intact enterohepatic circulation

  Comparative Biochemistry and Physiology Part C Pharmacology Toxicology and Endocrinology · 2000-08-01 · 22 citations

  article
  PublisherDOI

• Effect of selective gastric intrinsic denervation on gastric motility in turkeys

  Poultry Science · 2000-02-01 · 13 citations

  articleOpen accessSenior author

  The effect of selectively denervating portions of the myenteric plexus on gastroduodenal (GD) motility was examined in domestic turkeys (Meleagris gallopavo). The neural network beneath the lateral or medial side of the isthmus between the glandular stomach and the muscular stomach was denervated by application of 1% benzalkonium chloride (BC). Image intensification radiology (IIR) was performed postsurgically on the research subjects to observe GD contractions and to analyze aberrations. Two trials were performed. The first employed temporal controls by checking GD motility in all treated birds before and after BC had taken effect. The second trial controlled for the trauma associated with the surgical procedure by applying 0.9% saline solution in lieu of BC in four turkeys. The normal GD contractions sequence as confirmed by these controls was thin muscle contraction, duodenal contraction and outflow, thick muscle contraction, and, finally, glandular stomach contraction. Ablation of the nerves beneath the medial or lateral side of the isthmus resulted in the same abnormality in GD motility, namely a lack of thick muscle contractions. These results indicate that the entire myenteric plexus associated with the isthmus must remain intact for proper GD motility to take place. Furthermore, it can be inferred that initiation and regulation of the thick muscle pair acts via nerves encircling the isthmus. Secondary regulatory mechanisms controlling GD motility may exist and should be tested through future investigation.

  PublisherDOI

• Mechanisms of excreta formation and elimination in turkeys and ostriches

  Journal of Experimental Zoology · 1999-03-01 · 9 citations

  review1st authorCorresponding

  Undigested feed and precipitated uric acid are excreted together in domestic turkeys, whereas in ostriches, liquid urine then discrete fecal boli are excreted in rapid succession. Gross anatomy and physiology of the cloacal structures of these two species also differ, providing an explanation for the differences in their waste products.

  PublisherDOI

• Apparent chitin digestibilities in the Eastern screech owl (Otus asio) and the American kestrel (Falco sparverius)

  Journal of Experimental Zoology · 1999-03-01 · 14 citations

  articleSenior authorCorresponding

  Chitin, which is found in arthropod exoskeletons as a structural and defensive material, is one of the most abundant carbohydrates in nature. Chitin digestibility was studied in two partially insectivorous raptors, Eastern Screech Owls (Otus asio) and American Kestrels (Falco sparverius). When owls were fed crab shell chitin (5% or 2% of total dried food, by weight), 10.6 ± 7.1% (SD) to 30.4 ± 7.8% was digested (species digestibility means were 26.2 ± 4.4% and 18.6 ± 6.6%). Kestrels consuming a 5% or 2% chitin diet had 15.7 ± 3.9 to 25.7 ± 5.3 percent digestibilities. The mean apparent digestibilities for kestrels were 18.5 ± 2.5% and 22.3 ± 3.0%, respectively, for the 5% and 2% chitin diets. In an effort to improve chitin digestibilities in owls and kestrels, chitin was added to daily meals for 3 or 6 weeks, but no statistically significant increase in digestibilities was found. Relatively low apparent chitin digestibilities in those two raptorial species suggest that chitin is not an important energy source for raptors. Further investigation is required to clarify the magnitude of potential benefits. J. Exp. Zool. 283:387–393, 1999. © 1999 Wiley-Liss, Inc.

  PublisherDOI

Frequent coauthors

• H.G. Pollock

  20 shared

• Oral A. Evanson

  19 shared

• J.R. Kimmel

  University of Kansas Medical Center

  18 shared

• H. LYONS HUNT

  University of Minnesota

  17 shared

• Susan B. Chaplin

  11 shared

• H. E. Dziuk

  University of Minnesota

  11 shared

• Teresa DeGolier

  Bethel University

  8 shared

• Robert E. Carraway

  University of Massachusetts Chan Medical School

  8 shared

Labs

• Valuation LabPI