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The Pseudo-Dimension of Near-Optimal Auctions [article]

Jamie Morgenstern, Tim Roughgarden
2015 arXiv   pre-print
Since no auction can achieve near-optimal revenue ex-post, Balcan et al.  ...  Remark 4.4 (Near-optimality of sample complexity) Can we do better than Theorem 3.3?  ... 
arXiv:1506.03684v1 fatcat:qyqpz6eujbakjiqfioqbp62r2q

Kitâb-i Jâmiʿ al-Ḥikmatayn. Nâṣir-i Khusraw , Henry Corbin , Moh Moʾin

1955 Journal of Near Eastern Studies  
Hopason University of Chicago Kitéb-i Jami al-Hikmatayn. By NAsinai Kuusraw. Edited by Henry Corsin and Mon.  ...  Others who must take note are those in- terested in Manicheism, in Isméilism, and in JOURNAL OF NEAR EASTERN STUDIES Christian survivals.  ... 
doi:10.1086/371269 fatcat:kgckpwpjubfbxnunai7ps3jwn4

Simple, near-optimal quantum protocols for die-rolling [article]

Jamie Sikora
2018 arXiv   pre-print
In this paper, we present a DRIC-protocol with near-optimal security. We develop this protocol in several steps described below. The first step is to start with a protocol with decent security.  ... 
arXiv:1605.08156v2 fatcat:5ebkzk5twbbsxfaob522iav7ei

Additive Approximation for Near-Perfect Phylogeny Construction [article]

Pranjal Awasthi, Avrim Blum, Jamie Morgenstern, Or Sheffet
2012 arXiv   pre-print
This provides the best guarantees known - namely, a (1+o(1))-approximation - for the case (d) ≪ q ≪√(d), broadening the range of settings for which near-optimal solutions can be efficiently found.  ...  Moreover, if the data has a near-perfect phylogeny, i.e. the cost of the optimal Steiner tree is d+q, it is known that an exact solution can be found in running time which is polynomial in the number of  ...  Near perfect phylogenies have been studied in theoretical ( [11, 2, 12, 16] ) and experimental settings ( [15] ).  ... 
arXiv:1206.3334v1 fatcat:7h43i6eqeneqfabmiv7uxdvvxi

Simple, Near-Optimal Quantum Protocols for Die-Rolling

Jamie Sikora
2017 Cryptography  
Conclusions We have shown simple, near-optimal protocols exist for die-rolling. In contrast to many other cryptographic primitives, sometimes classical protocols are optimal.  ...  In this paper, we present a DRIC-protocol with near-optimal security. We develop this protocol in several steps described below. The first step is to start with a protocol with decent security.  ... 
doi:10.3390/cryptography1020011 fatcat:usa77mu3rrb27ogf4askl3iwby

Additive Approximation for Near-Perfect Phylogeny Construction [chapter]

Pranjal Awasthi, Avrim Blum, Jamie Morgenstern, Or Sheffet
2012 Lecture Notes in Computer Science  
This provides the best guarantees known-namely, a (1 + o(1))-approximation-for the case log(d) q √ d, broadening the range of settings for which near-optimal solutions can be efficiently found.  ...  Moreover, if the data has a near-perfect phylogeny, i.e. the cost of the optimal Steiner tree is d + q, it is known [2] that an exact solution can be found in running time which is polynomial in the number  ...  Near perfect phylogenies have been studied in theoretical ( [11, 2, 12, 16] ) and experimental settings ( [15] ).  ... 
doi:10.1007/978-3-642-32512-0_3 fatcat:vzogjruyo5bhzkrrm3azvrf6xe

Is Thermohaline Mixing the Full Story? Evidence for Separate Mixing Events near the Red Giant Branch Bump [article]

Jamie Tayar, Meridith Joyce
2022 arXiv   pre-print
The abundances of mixing--sensitive elements including lithium, [C/N], and 12C/13C are known to change near the red giant branch bump.  ...  After the RGBB, a region near the hydrogen burning shell becomes unstable to thermohaline mixing.  ...  More extensive catalogs might also be better able to map the shape of the change near the dilution drop.  ... 
arXiv:2205.09903v1 fatcat:4dbfrya3xvcovht6vvrjmne2ii

Understanding expressed low concern and latent concern near a hazardous waste treatment facility

Jamie Baxter, Daniel Lee
2004 Journal of Risk Research  
This paper discusses local small town residents' concerns about risk and safety near a hazardous waste facility at Swan Hills, Alberta, Canada.  ... 
doi:10.1080/1366987042000146210 fatcat:ybqezpnw4zazvlfdzqeuij6zxy

Next steps in near-duplicate detection for eRulemaking

Hui Yang, Jamie Callan, Stuart Shulman
2006 Proceedings of the 2006 national conference on Digital government research - dg.o '06  
The paper concludes by discussing challenges to moving near-duplicate detection into operational rulemaking environments.  ...  Large volume public comment campaigns and web portals that encourage the public to customize form letters produce many near-duplicate documents, which increases processing and storage costs, but is rarely  ...  in near-duplicate comments, and unique comments.  ... 
doi:10.1145/1146598.1146663 dblp:conf/dgo/YangCS06 fatcat:wpbduyx7ynbgpat73gwjdsczii

Near-Complete Genome Sequences of Vesicular Stomatitis Virus Isolates from the 2020 Outbreak in Kansas

Tyler Doerksen, Edward Bird, Jamie Henningson, Rachel Palinski
2021 Microbiology Resource Announcements  
Here, we report the near-complete genome sequences of vesicular stomatitis virus (VSV) serotype Indiana isolates from the 2020 U.S. outbreak.  ...  The four near-complete genome sequences discussed in this study will fill key knowledge gaps associated with the molecular evolution of the most recent (2020) VSV outbreak. Data availability.  ... 
doi:10.1128/mra.01454-20 pmid:33602738 fatcat:j4e3wfc5nfawhi6kpmn7humw2a

Ultrahigh-speed scanning near-field optical microscopy capable of over 100 frames per second

Andrew D. L. Humphris, Jamie K. Hobbs, Mervyn J. Miles
2003 Applied Physics Letters  
The bandwidth of the optical interaction is limited by the intensity of the near-field region and collection efficiency.  ...  To achieve this, a method of measuring the optical near-field intensity with a high bandwidth of greater than 1 MHz has been developed.  ...  The bandwidth of the optical interaction is limited by the intensity of the near-field region and collection efficiency.  ... 
doi:10.1063/1.1590737 fatcat:bivw4vmkrraahclx7vkwcknci4

Suplementary text, tables and figures from Major histocompatibility complex-associated odour preferences and human mate choice: near and far horizons

Jan Havlíček, Jamie Winternitz, S. Craig Roberts
2020 Figshare  
The major histocompatibility complex (MHC) is a core part of the adaptive immune system. As in other vertebrate taxa, it may also affect human chemical communication via odour-based mate preferences, with greater attraction towards MHC-dissimilar partners. However, despite some well-known findings, the available evidence is equivocal and made complicated by varied approaches to quantifying human mate choice. To address this, we here conduct comprehensive meta-analyses focusing on studies
more » ... ng: (i) genomic mate selection, (ii) relationship satisfaction, and (iii) odour preference. Analysis of genomic studies reveals no association between MHC-dissimilarity and mate choice in actual couples; however, MHC effects appear to be independent of the genomic background. The effect of MHC-dissimilarity on relationship satisfaction was not significant, and we found evidence for publication bias in studies on this area. There was also no significant association between MHC-dissimilarity and odour preferences. Finally, combining effect sizes from all genomic, relationship satisfaction, odour preference and previous mate choice studies into an overall estimate showed no overall significant effect of MHC-similarity on human mate selection. Based on these findings, we make a set of recommendations for future studies, focusing both on aspects that should be implemented immediately and those that lurk on the far horizon. We need larger samples with greater geographical and cultural diversity that control for genome-wide similarity. We also need more focus on mechanisms of MHC-associated odour preferences and on MHC-associated pregnancy loss.This article is part of the Theo Murphy meeting issue 'Chemical communication in humans'.
doi:10.6084/m9.figshare.11898528.v1 fatcat:awbakqcqvfbhfe6rmy5ufxazpy

Suplementary text, tables and figures from Major histocompatibility complex-associated odour preferences and human mate choice: near and far horizons

Jan Havlíček, Jamie Winternitz, S. Craig Roberts
2020 Figshare  
The major histocompatibility complex (MHC) is a core part of the adaptive immune system. As in other vertebrate taxa, it may also affect human chemical communication via odour-based mate preferences, with greater attraction towards MHC-dissimilar partners. However, despite some well-known findings, the available evidence is equivocal and made complicated by varied approaches to quantifying human mate choice. To address this, we here conduct comprehensive meta-analyses focusing on studies
more » ... ng: (i) genomic mate selection, (ii) relationship satisfaction, and (iii) odour preference. Analysis of genomic studies reveals no association between MHC-dissimilarity and mate choice in actual couples; however, MHC effects appear to be independent of the genomic background. The effect of MHC-dissimilarity on relationship satisfaction was not significant, and we found evidence for publication bias in studies on this area. There was also no significant association between MHC-dissimilarity and odour preferences. Finally, combining effect sizes from all genomic, relationship satisfaction, odour preference and previous mate choice studies into an overall estimate showed no overall significant effect of MHC-similarity on human mate selection. Based on these findings, we make a set of recommendations for future studies, focusing both on aspects that should be implemented immediately and those that lurk on the far horizon. We need larger samples with greater geographical and cultural diversity that control for genome-wide similarity. We also need more focus on mechanisms of MHC-associated odour preferences and on MHC-associated pregnancy loss.This article is part of the Theo Murphy meeting issue 'Chemical communication in humans'.
doi:10.6084/m9.figshare.11898528 fatcat:pdjqenm6rnahtdrkipcawja3ci

Quantitative sodium MRI of the mouse prostate

Jamie Near, Robert Bartha
2010 Magnetic Resonance in Medicine  
In healthy tissue, intracellular and extracellular sodium concentrations are actively maintained by an energetic sodium-potassium pump. If normal cellular structure or function is disrupted, this homeostasis can be compromised resulting in a change in the total tissue sodium concentration. Sodium magnetic resonance imaging has been used previously to detect abnormalities in the tissue sodium concentration resulting from various pathological conditions including stroke(1), breast cancer(2) and
more » ... ain cancer(3). Based on this previous work, it is hypothesized that tissue sodium concentration may also be used to detect sodium changes in the prostate related to the presence of prostate cancer. The purpose of this study is to develop a method for quantitative sodium magnetic resonance imaging of the murine ventral prostate. Methods: All experiments were performed on a 31 cm horizontal bore, 9.4T Varian (Palo Alto, CA, USA) small animal imaging system. A loop-gap radiofrequency coil with a length of 18 mm (Figure 1 ) was constructed on a cylindrical former with a diameter of 35 mm. The coil was dualtuned to both proton (400.2 MHz) and sodium (105.86 MHz) frequencies by pole insertion(4), and the component values were chosen to favour sensitivity at the sodium frequency. Matching was achieved using a capacitive matching network that could be adjusted for both high and low gamma nuclei, and balancing was achieved at both frequencies using a pair of in-line cable choke baluns. Imaging was performed on a group of five healthy, five month old BALB/c male mice that were anesthetized using isoflourane gas. High-resolution FSE images (sagittal orientation, TR/TE=5000/27ms, echo train length= 8, echo spacing=9ms, effective echo=3, FOV=32x32mm, slice thickness=0.3mm, matrix=256x256, 64 slices, 8 averages) were acquired at the proton frequency to identify the location of the prostate. Sodium images (sagittal orientation, FOV=32x32x16 mm, matrix=32x32x16, 30 averages) were then acquired using a three-dimensional FLASH sequence with short TE (0.6 ms) and long TR (300 ms) to suppress both T1 and T2 signal contrast. A short echo time was achieved using a partial (53%) readout acquisition, combined with a readout bandwidth of 20 kHz. The tissue sodium concentration was estimated by fitting pixel intensities to a linear model based on two sodium vials with concentrations of 100 and 200 mM. From phantom experiments, the B 1 profile of the coil was found to be non-uniform along the axis of the coil, but highly uniform within sagittal slices (orthogonal to the coil axis). Therefore, to avoid B 1 related uncertainties, sodium quantification was performed separately in each sagittal slice using the reference vials at the same slice location. The average sodium concentration in the ventral prostate was determined by defining the prostate boundary in the proton images, and measuring the sodium concentration within that same boundary in the quantitative sodium images. Regions of interest were created using OsiriX (OsiriX Foundation, Geneva, Switzerland). Results: Proton FSE images (Figure 2a ) demonstrated clear delineation of the ventral prostate and surrounding anatomy. The ventral prostate was also clearly visible in the sodium images (Figure 2b) , as it contained a higher sodium concentration than all surrounding structures with the exception of the bladder. The average sodium concentrations for each of the 5 mice scanned are shown in Table 1 , as well as the group average, which was found to be 130 ± 14 mM. Conclusion: This study demonstrates the feasibility of quantitative sodium imaging of the mouse prostate. The high natural abundance of sodium in the ventral prostate of the healthy mouse is advantageous for this purpose. In future experiments, quantitative sodium measurements will be performed in a transgenic mouse model of prostate cancer to determine if sodium changes are observed in cancerous prostate tissue.
doi:10.1002/mrm.22196 pmid:20187189 fatcat:2gduko5jindcnigfgclqbsk3he

Online Prediction of Physico-Chemical Quality Attributes of Beef Using Visible—Near-Infrared Spectroscopy and Chemometrics

Amna Sahar, Paul Allen, Torres Sweeney, Jamie Cafferky, Gerard Downey, Andrew Cromie, Ruth Hamill
2019 Foods  
The potential of visible–near-infrared (Vis–NIR) spectroscopy to predict physico-chemical quality traits in 368 samples of bovine musculus longissimus thoracis et lumborum (LTL) was evaluated.  ...  In the case of spectroscopy, electromagnetic radiations in the ultraviolet, visible, near-, mid-and far-infrared regions interact with matter, providing fingerprints of the samples under consideration,  ...  Consequently, the objective of this study was to model the physico-chemical parameters of beef quality including ultimate pH, colour, cook loss and drip loss, using visible-near infrared spectroscopic  ... 
doi:10.3390/foods8110525 pmid:31652829 pmcid:PMC6915407 fatcat:epuxieaqxjhrfkkz4wmrw4nfty
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