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Journal articles on the topic 'Dags'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Ogasawara, Daisuke, Hui Deng, Andreu Viader, et al. "Rapid and profound rewiring of brain lipid signaling networks by acute diacylglycerol lipase inhibition." Proceedings of the National Academy of Sciences 113, no. 1 (2015): 26–33. http://dx.doi.org/10.1073/pnas.1522364112.

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Diacylglycerol lipases (DAGLα and DAGLβ) convert diacylglycerol to the endocannabinoid 2-arachidonoylglycerol. Our understanding of DAGL function has been hindered by a lack of chemical probes that can perturb these enzymes in vivo. Here, we report a set of centrally active DAGL inhibitors and a structurally related control probe and their use, in combination with chemical proteomics and lipidomics, to determine the impact of acute DAGL blockade on brain lipid networks in mice. Within 2 h, DAGL inhibition produced a striking reorganization of bioactive lipids, including elevations in DAGs and

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Ferguson, Karl D., Mark McCann, Srinivasa Vittal Katikireddi, et al. "Evidence synthesis for constructing directed acyclic graphs (ESC-DAGs): a novel and systematic method for building directed acyclic graphs." International Journal of Epidemiology 49, no. 1 (2019): 322–29. http://dx.doi.org/10.1093/ije/dyz150.

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Abstract Background Directed acyclic graphs (DAGs) are popular tools for identifying appropriate adjustment strategies for epidemiological analysis. However, a lack of direction on how to build them is problematic. As a solution, we propose using a combination of evidence synthesis strategies and causal inference principles to integrate the DAG-building exercise within the review stages of research projects. We demonstrate this idea by introducing a novel protocol: ‘Evidence Synthesis for Constructing Directed Acyclic Graphs’ (ESC-DAGs)’. Methods ESC-DAGs operates on empirical studies identifi

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PAIK, DOOWON, SUDHAKAR REDDY, and SARTAJ SAHNI. "VERTEX SPLITTING IN DAGS AND APPLICATIONS TO PARTIAL SCAN DESIGNS AND LOSSY CIRCUITS." International Journal of Foundations of Computer Science 09, no. 04 (1998): 377–98. http://dx.doi.org/10.1142/s0129054198000301.

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Directed acyclic graphs (dags) are often used to model circuits. Path lengths in such dags represent circuit delays. In the vertex splitting problem, the objective is to determine a minimum number of vertices to split so that the resulting dag has no path of length > δ. This problem has application to the placement of flip-flops in partial scan designs, placement of latches in pipelined circuits, placement of signal boosters in lossy circuits and networks, etc. Several simplified versions of this problem are shown to be NP-hard. A linear time algorithm is obtained for the case when the dag

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CORDASCO, GENNARO, and ARNOLD L. ROSENBERG. "ON SCHEDULING SERIES-PARALLEL DAGs TO MAXIMIZE AREA." International Journal of Foundations of Computer Science 25, no. 05 (2014): 597–621. http://dx.doi.org/10.1142/s0129054114500245.

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The AREA of a schedule for executing DAGs is the average number of DAG-chores that are eligible for execution at each step of the computation. AREA maximization is a new optimization goal for schedules that execute DAGs within computational environments, such as Internet-based computing, clouds, and volunteer computing projects, that are dynamically heterogeneous, in the sense that the environments' constituent computers can change their effective powers at times and in ways that are not predictable. This paper is motivated by the thesis that, within dynamically heterogeneous environments, DAG

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Sbrissa, Diego, Amyia Hajra, and Khalil N. Bitar. "Origin of molecular species of diacylglycerol induced by bombesin in smooth muscle cells from rabbit rectosigmoid." American Journal of Physiology-Gastrointestinal and Liver Physiology 275, no. 1 (1998): G138—G150. http://dx.doi.org/10.1152/ajpgi.1998.275.1.g138.

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The source of early production of sn-1,2-diacylglycerol (DAG) has for a long time been exclusively linked to hydrolysis of phosphatidylinositol 4,5-diphosphate, which on receptor activation is hydrolyzed into DAG and inositol 1,4,5-trisphosphate. We have investigated the origin of lipid sources of DAG production in smooth muscle cells, in response to contraction induced by peptide agonists. We have performed a quantitative analysis of the molecular species of DAG formed in relation to the known molecular composition of parent phospholipids. The molecular species of phospholipids are sufficient

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Vilímová, J., and K. Kutalová. "Occurrence of certain cuticular structures confirms functionality of dorsal abdominal scent glands in Acanthosomatidae (Heteroptera: Pentatomoidea)." Bulletin of Entomological Research 102, no. 1 (2011): 29–42. http://dx.doi.org/10.1017/s0007485311000344.

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AbstractElasmucha ferrugata(Fabricius, 1787) (Heteroptera: Acanthosomatidae) provides maternal care of eggs and larvae. Adults of both sexes have functional anterior dorsal abdominal scent glands (DAGs). Study of all internal and external cuticular structures of DAGs revealed that no DAGs are fully functional in the 1st larval instar, and very probably they are only slightly functional in the 2nd instar. Median and posterior DAGs are undoubtedly not functional in adults. There exists sexual dimorphism in the number of multicellular glandular units in anterior glands in adults. The occurrence o

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Peters, Jonas, and Peter Bühlmann. "Structural Intervention Distance for Evaluating Causal Graphs." Neural Computation 27, no. 3 (2015): 771–99. http://dx.doi.org/10.1162/neco_a_00708.

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Causal inference relies on the structure of a graph, often a directed acyclic graph (DAG). Different graphs may result in different causal inference statements and different intervention distributions. To quantify such differences, we propose a (pre-)metric between DAGs, the structural intervention distance (SID). The SID is based on a graphical criterion only and quantifies the closeness between two DAGs in terms of their corresponding causal inference statements. It is therefore well suited for evaluating graphs that are used for computing interventions. Instead of DAGs, it is also possible

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Zimmermann, A., P. Gehr, and H. U. Keller. "Diacylglycerol-induced shape changes, movements and altered F-actin distribution in human neutrophils." Journal of Cell Science 90, no. 4 (1988): 657–66. http://dx.doi.org/10.1242/jcs.90.4.657.

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The study shows that diacylglycerols (DAGs) as physiological activators of protein kinase C induce characteristic shape changes in human neutrophil granulocytes. In contrast to chemotactic peptides, which can induce front-tail polarity characterized by a contracted tail and an expanding front, DAGs elicit the formation of non-polar cells with surface projections. These cells exhibit a distinct type of motility characterized by vigorous and continuous shape changes without front-tail polarity and without the unidirectional movement and cytoplasmic streaming seen in polarized cells. In neutrophi

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Somogyi, Anna, Mária Berinkeiné Donkó, Farkas Sarnyai, Gergely Becskereki, Miklós Csala, and Blanka Tóth. "Simultaneous Quantitative Determination of Different Ceramide and Diacylglycerol Species in Cultured Cells by Using Liquid Chromatography–Electrospray Tandem Mass Spectrometry." Periodica Polytechnica Chemical Engineering 64, no. 4 (2020): 421–29. http://dx.doi.org/10.3311/ppch.15357.

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A sensitive, reproducible reverse-phased high performance liquid chromatography electrospray tandem mass spectrometry (HPLC-ESI-MS/MS) method with simple sample preparation was developed for the simultaneous determination of a wide range of ceramides, diacylglycerols (DAGs) in cultured cells. Chromatographic separation of the compounds was achieved in a 14-minute run using a C8 column with a gradient elution by methanol and 10 mM ammonium acetate buffer as mobile phase at a flow rate of 0.5 ml/min. Various ceramides, DAGs were detected with a triple quadrupol system in multiple reaction monito

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DI BATTISTA, GIUSEPPE, ASHIM GARG, GIUSEPPE LIOTTA, et al. "DRAWING DIRECTED ACYCLIC GRAPHS: AN EXPERIMENTAL STUDY." International Journal of Computational Geometry & Applications 10, no. 06 (2000): 623–48. http://dx.doi.org/10.1142/s0218195900000358.

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In this paper we consider the important class of directed acyclic graphs (DAGs), and present the results of a comparative study on four popular drawing algorithms specifically developed for them. The study has been performed within a general experimental setting consisting of two large test suites of DAGs and a set of quality measures. The focus of the experiments has been the practical behavior of the algorithms with a geometric foundation compared to that of the algorithms with a topological foundation. The four algorithms exhibit various trade-offs with respect to the quality measures consi

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Carsberg, C. J., J. Ohanian, and P. S. Friedmann. "Ultraviolet radiation stimulates a biphasic pattern of 1,2-diacylglycerol formation in cultured human melanocytes and keratinocytes by activation of phospholipases C and D." Biochemical Journal 305, no. 2 (1995): 471–77. http://dx.doi.org/10.1042/bj3050471.

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Ultraviolet radiation (UVR) induces melanin synthesis by human epidermal melanocytes, and phospholipid-derived 1,2-diacylglycerols (DAGs) have been implicated in mediating this response. In previous experiments, addition of the synthetic DAG 1-oleoyl-2-acetylglycerol to cultured pigment cells stimulated melanogenesis. The purpose of the present study was to analyse the effects of UVR on the endogenous generation of DAGs. It was found that in a number of cultured cell types, including human melanocytes and B16 mouse melanoma cells, but also human keratinocytes and Swiss 3T3 fibroblasts, exposur

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Chanumolu, Sree K., Mustafa Albahrani, Handan Can, and Hasan H. Otu. "KEGG2Net: Deducing gene interaction networks and acyclic graphs from KEGG pathways." EMBnet.journal 26 (March 5, 2021): e949. http://dx.doi.org/10.14806/ej.26.0.949.

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The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database provides a manual curation of biological pathways that involve genes (or gene products), metabolites, chemical compounds, maps, and other entries. However, most applications and datasets involved in omics are gene or protein-centric requiring pathway representations that include direct and indirect interactions only between genes. Furthermore, special methodologies, such as Bayesian networks, require acyclic representations of graphs. We developed KEGG2Net, a web resource that generates a network involving only the genes repre

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Kadri, Walid, and Belabbas Yagoubi. "Optimized Scheduling Approach for Scientific Applications Based on Clustering in Cloud Computing Environment." Scalable Computing: Practice and Experience 20, no. 3 (2019): 527–40. http://dx.doi.org/10.12694/scpe.v20i3.1548.

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Cloud Computing refers to the use of the computing capabilities of remote computers, where the user has considerable computing power without having powerful units. Scientific applications, usually represented as Directed Acyclic Graphs (DAGs), are an important class of applications that lead to challenging problems for resource management in distributed computing. With the advent of Cloud Computing, particularly the IaaS offers for on demand virtual machines leasing, multiple jobs execution, consisting of a large number of DAGs, needs an elaborated scheduling and resource provisioning policies

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Heckman, James, and Rodrigo Pinto. "CAUSAL ANALYSIS AFTER HAAVELMO." Econometric Theory 31, no. 1 (2014): 115–51. http://dx.doi.org/10.1017/s026646661400022x.

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Haavelmo’s seminal 1943 and 1944 papers are the first rigorous treatment of causality. In them, he distinguished the definition of causal parameters from their identification. He showed that causal parameters are defined usinghypotheticalmodels that assign variation to some of the inputs determining outcomes while holding all other inputs fixed. He thus formalized and made operational Marshall’s (1890)ceteris paribusanalysis. We embed Haavelmo’s framework into the recursive framework of Directed Acyclic Graphs (DAGs) commonly used in the literature of causality (Pearl, 2000) and Bayesian nets

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Banegas, Gustavo, Paulo S. L. M. Barreto, Brice Odilon Boidje, et al. "DAGS: Key encapsulation using dyadic GS codes." Journal of Mathematical Cryptology 12, no. 4 (2018): 221–39. http://dx.doi.org/10.1515/jmc-2018-0027.

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Abstract Code-based cryptography is one of the main areas of interest for NIST’s Post-Quantum Cryptography Standardization call. In this paper, we introduce DAGS, a Key Encapsulation Mechanism (KEM) based on quasi-dyadic generalized Srivastava codes. The scheme is proved to be IND-CCA secure in both random oracle model and quantum random oracle model. We believe that DAGS will offer competitive performance, especially when compared with other existing code-based schemes, and represent a valid candidate for post-quantum standardization.

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WOLSKI, RICH. "STATIC SCHEDULING OF HIERARCHICAL PROGRAM GRAPHS." Parallel Processing Letters 05, no. 04 (1995): 611–22. http://dx.doi.org/10.1142/s0129626495000540.

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Many parallel compilation systems represent programs internally as Directed Acyclic Graphs (DAGs). However, the storage of these DAGs becomes prohibitive when the program being compiled is large. In this paper we describe a compile-time scheduling methodology for hierarchical DAG programs represented in the IFX intermediate form. The method we present is itself hierarchical reducing the storage that would otherwise be required by a single flat DAG representation. We describe the scheduling model and demonstrate the method using the Optimizing Sisal Compiler and two scientific applications.

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Yang, Tianming, Jing Zhang, and Ningbo Hao. "Improving Read Performance with BP-DAGs for Storage-Efficient File Backup." Open Electrical & Electronic Engineering Journal 7, no. 1 (2013): 90–97. http://dx.doi.org/10.2174/1874129001307010090.

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The continued growth of data and high-continuity of application have raised a critical and mounting demand on storage-efficient and high-performance data protection. New technologies, especially the D2D (Disk-to-Disk) deduplication storage are therefore getting wide attention both in academic and industry in the recent years. Existing deduplication systems mainly rely on duplicate locality inside the backup workload to achieve high throughput but suffer from read performance degrading under conditions of poor duplicate locality. This paper presents the design and performance evaluation of a D2

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Lee, Elizabeth C., and Valerie W. Hu. "Phenotypic Subtyping and Re-Analysis of Existing Methylation Data from Autistic Probands in Simplex Families Reveal ASD Subtype-Associated Differentially Methylated Genes and Biological Functions." International Journal of Molecular Sciences 21, no. 18 (2020): 6877. http://dx.doi.org/10.3390/ijms21186877.

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Autism spectrum disorder (ASD) describes a group of neurodevelopmental disorders with core deficits in social communication and manifestation of restricted, repetitive, and stereotyped behaviors. Despite the core symptomatology, ASD is extremely heterogeneous with respect to the severity of symptoms and behaviors. This heterogeneity presents an inherent challenge to all large-scale genome-wide omics analyses. In the present study, we address this heterogeneity by stratifying ASD probands from simplex families according to the severity of behavioral scores on the Autism Diagnostic Interview-Rev

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Darwiche, A., and G. Provan. "Query DAGs: A Practical Paradigm for Implementing Belief-Network Inference." Journal of Artificial Intelligence Research 6 (May 1, 1997): 147–76. http://dx.doi.org/10.1613/jair.330.

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We describe a new paradigm for implementing inference in belief networks, which consists of two steps: (1) compiling a belief network into an arithmetic expression called a Query DAG (Q-DAG); and (2) answering queries using a simple evaluation algorithm. Each node of a Q-DAG represents a numeric operation, a number, or a symbol for evidence. Each leaf node of a Q-DAG represents the answer to a network query, that is, the probability of some event of interest. It appears that Q-DAGs can be generated using any of the standard algorithms for exact inference in belief networks (we show how they ca

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Navone, Laura, and Robert E. Speight. "Enzyme systems for effective dag removal from cattle hides." Animal Production Science 59, no. 7 (2019): 1387. http://dx.doi.org/10.1071/an18194.

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The effective removal of recalcitrant manure balls (dags) composed of dung, hair, soil, urine, sugars and straw from the hides of cattle remains a significant issue for the livestock industry. Dags must be removed to reduce the likelihood of microbial meat contamination and irreversible damage during leather processing. Current removal methods require extensive washing over many hours per animal resulting in high water use, costs and stress to the animal. Enzymes can be highly effective catalysts for the breakdown of biomass but previous research into the enzymatic removal of dags has had limi

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Greeff, J. C., L. J. E. Karlsson, A. C. Schlink, and A. R. Gilmour. "Factors explaining the incidence of breech strike in a Mediterranean environment in unmulesed and uncrutched Merino sheep." Animal Production Science 58, no. 7 (2018): 1279. http://dx.doi.org/10.1071/an16528.

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Factors responsible for an increase in breech strike were investigated in an unmulesed Merino flock in a Mediterranean environment that were not crutched in 4 years but were crutched in the subsequent 2 years. No chemical preventative treatments such as dipping or jetting were applied in order to assess the susceptibility of the different progeny groups. The number of breech strikes for each animal was recorded from birth to hogget shearing at 17 months of age. Production traits were measured and a large number of visual wool and body conformational traits were subjectively scored to determine

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Greeff, J. C., L. J. E. Karlsson, and A. C. Schlink. "Are breech strike, dags and breech wrinkle genetically the same trait in crutched, uncrutched and mulesed Merino sheep?" Animal Production Science 59, no. 10 (2019): 1777. http://dx.doi.org/10.1071/an18461.

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Breech strike is caused by the infestation of maggots from Lucilia cuprina on the skin of susceptible sheep. Crutching and mulesing modify the potential expression of breech strike, because crutched and mulesed sheep have a lower risk of being struck than uncrutched sheep. The inheritance of and genetic correlations among breech strike from birth to hogget shearing, and dags (breech soiling) and skin wrinkles scored at yearling age were estimated in unmulesed and crutched, unmulesed and uncrutched, and in mulesed and uncrutched Merino sheep to determine whether these traits were genetically th

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Bariyah, Khoerul, Nuri Andarwulan, and Purwiyatno Hariyadi. "Pengurangan Kadar Digliserida dan Asam Lemak Bebas dalam Minyak Sawit Kasar Menggunakan Adsorben." Agritech 37, no. 1 (2017): 49. http://dx.doi.org/10.22146/agritech.17009.

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Indonesia is the world’s largest crude palm oil (CPO) producer and consumer in 2014. Components that affect the quality of CPO are diglycerides (DAGs) and free fatty acids (FFA). DAGs in palm oil are known as the precursor of 3-MCPD esters, while higher content of FFA could influence the oil stability. The contact of CPO with adsorbent could affect the present of DAG and FFA in CPO. The purpose of this study was to determine the best type of adsorbent in reducing DAGs and FFA in CPO with emphasis on the characteristics of the adsorbent and adsorbate. This study was carried out by using three d

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BROUTIN, NICOLAS, and OMAR FAWZI. "Longest Path Distance in Random Circuits." Combinatorics, Probability and Computing 21, no. 6 (2012): 856–81. http://dx.doi.org/10.1017/s0963548312000260.

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We study distance properties of a general class of random directed acyclic graphs (dags). In a dag, many natural notions of distance are possible, for there exist multiple paths between pairs of nodes. The distance of interest for circuits is the maximum length of a path between two nodes. We give laws of large numbers for the typical depth (distance to the root) and the minimum depth in a random dag. This completes the study of natural distances in random dags initiated (in the uniform case) by Devroye and Janson. We also obtain large deviation bounds for the minimum of a branching random wal

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Popendorf, K. J., T. Tanaka, M. Pujo-Pay, et al. "Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability." Biogeosciences Discussions 8, no. 4 (2011): 7921–52. http://dx.doi.org/10.5194/bgd-8-7921-2011.

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Abstract. Intact polar membrane lipids compose a significant fraction of cellular material in plankton and their synthesis imposes a substantial constraint on planktonic nutrient requirements. As a part of the Biogeochemistry from the Oligotrophic to the Ultraoligtrophic Mediterranean (BOUM) cruise we examined the distribution of several classes of intact polar diacylglycerolipids (IP-DAGs) across the Mediterranean, and found that phospholipid concentration as a percent of total lipids correlated with phosphate concentration. In addition, the ratios of non-phosphorus lipids to phospholipids –

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Popendorf, K. J., T. Tanaka, M. Pujo-Pay, et al. "Gradients in intact polar diacylglycerolipids across the Mediterranean Sea are related to phosphate availability." Biogeosciences 8, no. 12 (2011): 3733–45. http://dx.doi.org/10.5194/bg-8-3733-2011.

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Abstract. Intact polar membrane lipids compose a significant fraction of cellular material in plankton and their synthesis imposes a substantial constraint on planktonic nutrient requirements. As a part of the Biogeochemistry from the Oligotrophic to the Ultraoligotrophic Mediterranean (BOUM) cruise we examined the distribution of several classes of intact polar diacylglycerolipids (IP-DAGs) across the Mediterranean, and found that phospholipid concentration as a percent of total lipids correlated with phosphate concentration. In addition, the ratios of non-phosphorus lipids to phospholipids –

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Havumaki, Joshua, and Marisa C. Eisenberg. "Using compartmental models to simulate directed acyclic graphs to explore competing causal mechanisms underlying epidemiological study data." Journal of The Royal Society Interface 17, no. 167 (2020): 20190675. http://dx.doi.org/10.1098/rsif.2019.0675.

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Accurately estimating the effect of an exposure on an outcome requires understanding how variables relevant to a study question are causally related to each other. Directed acyclic graphs (DAGs) are used in epidemiology to understand causal processes and determine appropriate statistical approaches to obtain unbiased measures of effect. Compartmental models (CMs) are also used to represent different causal mechanisms, by depicting flows between disease states on the population level. In this paper, we extend a mapping between DAGs and CMs to show how DAG-derived CMs can be used to compare comp

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Ghassami, AmirEmad, Saber Salehkaleybar, Negar Kiyavash, and Kun Zhang. "Counting and Sampling from Markov Equivalent DAGs Using Clique Trees." Proceedings of the AAAI Conference on Artificial Intelligence 33 (July 17, 2019): 3664–71. http://dx.doi.org/10.1609/aaai.v33i01.33013664.

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A directed acyclic graph (DAG) is the most common graphical model for representing causal relationships among a set of variables. When restricted to using only observational data, the structure of the ground truth DAG is identifiable only up to Markov equivalence, based on conditional independence relations among the variables. Therefore, the number of DAGs equivalent to the ground truth DAG is an indicator of the causal complexity of the underlying structure–roughly speaking, it shows how many interventions or how much additional information is further needed to recover the underlying DAG. In

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Lair, Benjamin, Claire Laurens, Bram Van Den Bosch, and Cedric Moro. "Novel Insights and Mechanisms of Lipotoxicity-Driven Insulin Resistance." International Journal of Molecular Sciences 21, no. 17 (2020): 6358. http://dx.doi.org/10.3390/ijms21176358.

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A large number of studies reported an association between elevated circulating and tissue lipid content and metabolic disorders in obesity, type 2 diabetes (T2D) and aging. This state of uncontrolled tissue lipid accumulation has been called lipotoxicity. It was later shown that excess lipid flux is mainly neutralized within lipid droplets as triglycerides, while several bioactive lipid species such as diacylglycerols (DAGs), ceramides and their derivatives have been mechanistically linked to the pathogenesis of insulin resistance (IR) by antagonizing insulin signaling and action in metabolic

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Fagundes, Melissa Figueira, and Divino Ignácio Ribeiro Junior. "Modelo baseado em Frictionless Data aplicado aos dados abertos governamentais." RDBCI: Revista Digital de Biblioteconomia e Ciência da Informação 18 (November 20, 2020): e020034. http://dx.doi.org/10.20396/rdbci.v18i00.8661528.

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O presente trabalho propõe um modelo baseado em Fricitionless Data (FD) para auxiliar na publicação de dados abertos governamentais (DAGs). FD é uma iniciativa da Open Knowledge Foundation, que pretende remover o "atrito" no trabalho com os dados, ou seja, quando se perde muito tempo e recursos para entender e trabalhar com o dado. No âmbito das instituições públicas, a ausência de padrões para publicação e processamento dos DAGs é problema comum quando se trata de abertura dos DAGs. O estudo procurou contribuir ao aplicar o modelo ao conjunto de dados com informações sobre as boas práticas ex

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Arnold, Kellyn F., Laurie Berrie, Peter W. G. Tennant, and Mark S. Gilthorpe. "A causal inference perspective on the analysis of compositional data." International Journal of Epidemiology 49, no. 4 (2020): 1307–13. http://dx.doi.org/10.1093/ije/dyaa021.

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Abstract Background Compositional data comprise the parts of some whole, for which all parts sum to that whole. They are prevalent in many epidemiological contexts. Although many of the challenges associated with analysing compositional data have been discussed previously, we do so within a formal causal framework by utilizing directed acyclic graphs (DAGs). Methods We depict compositional data using DAGs and identify two distinct effect estimands in the generic case: (i) the total effect, and (ii) the relative effect. We consider each in the context of three specific example scenarios involvi

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Arafeh, B. R. "A Multi-Step Approach for Scheduling Tasks with Synchronization on Clusters of Computers." Journal of Engineering Research [TJER] 2, no. 1 (2005): 77. http://dx.doi.org/10.24200/tjer.vol2iss1pp77-89.

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In this work, a two-step approach is adopted for scheduling tasks with synchronous inter-task communication. To that end, an efficient algorithm, called GLB-Synch, is introduced for mapping clusters and ordering tasks on processors. The algorithm used the information obtained during the clustering step for selecting a cluster to be mapped on the least loaded processor. A performance study has been conducted on the GLB-Synch algorithm by simulation. A multi-step scheduling setup has been performed based on a previously developed algorithm for clustering DAGs with synchronous communication, call

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Fletcher, L. R., B. L. Sutherland, and C. G. Fletcher. "The impact of endophyte on the health and productivity of sheep grazing ryegrass-based pastures." NZGA: Research and Practice Series 7 (January 1, 1999): 11–17. http://dx.doi.org/10.33584/rps.7.1999.3403.

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The health and production of sheep grazing perennial ryegrass with and without wild-type endophyte (Neotyphodium lolii) has been studied in several trials over a number of years. Lambs/ hoggets grazing predominantly perennial ryegrass swards with endophyte developed moderate to severe ryegrass staggers in summer and autumn, while those grazing endophyte-free ryegrass did not. Lambs/hoggets grazing ryegrass with endophyte also had more dags, lower growth rates, lower plasma prolactin levels, higher body temperatures and respiration rates under warm humid conditions. Most of these adverse respon

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da Silva, Mônica Araújo, Anderson Selton Silva dos Santos, Thatiane Veríssimo dos Santos, Mario Roberto Meneghetti, and Simoni Margareti Plentz Meneghetti. "Organotin(iv) compounds with high catalytic activities and selectivities in the glycerolysis of triacylglycerides." Catalysis Science & Technology 7, no. 23 (2017): 5750–57. http://dx.doi.org/10.1039/c7cy01559c.

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Sn(iv) complexes, i.e., di-n-butyltin dichloride, n-butyltin trichloride, di-n-butyltin dilaurate, n-butyl stannoic acid, and di-n-butyl-oxo-stannane, were tested as catalysts for the glycerolysis of triacylglycerides (TAGs) to produce monoacylglycerols (MAGs) and diacylglycerols (DAGs).

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Wang, Guan, Yuxin Wang, Hui Liu, and He Guo. "HSIP: A Novel Task Scheduling Algorithm for Heterogeneous Computing." Scientific Programming 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/3676149.

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High-performance heterogeneous computing systems are achieved by the use of efficient application scheduling algorithms. However, most of the current algorithms have low efficiency in scheduling. Aiming at solving this problem, we propose a novel task scheduling algorithm for heterogeneous computing named HSIP (heterogeneous scheduling algorithm with improved task priority) whose functionality relies on three pillars: (1) an improved task priority strategy based on standard deviation with improved magnitude as computation weight and communication cost weight to make scheduling priority more re

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Dossett, David, and Martin Sevior. "Prompt calibration automation at Belle II." EPJ Web of Conferences 245 (2020): 02016. http://dx.doi.org/10.1051/epjconf/202024502016.

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The Belle II detector began collecting data from e+e− collisions at the SuperKEKB electron-positron collider in March 2019. Belle II aims to collect a data sample 50 times larger than the previous generation of B-factories. For Belle II analyses to be competitive it is crucial that calibration payloads for this data are calculated promptly prior to data reconstruction. To accomplish this goal a Python plugin package has been developed based on the open-source Apache Airflow package; using Directed Acyclic Graphs (DAGs) to describe the ordering of processes and Flask to provide administration a

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Oates, C. J., L. Costa, and T. E. Nichols. "Toward a Multisubject Analysis of Neural Connectivity." Neural Computation 27, no. 1 (2015): 151–70. http://dx.doi.org/10.1162/neco_a_00690.

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Directed acyclic graphs (DAGs) and associated probability models are widely used to model neural connectivity and communication channels. In many experiments, data are collected from multiple subjects whose connectivities may differ but are likely to share many features. In such circumstances, it is natural to leverage similarity among subjects to improve statistical efficiency. The first exact algorithm for estimation of multiple related DAGs was recently proposed by Oates, Smith, Mukherjee, and Cussens ( 2014 ). In this letter we present examples and discuss implications of the methodology a

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Jones, P. M., S. J. Persaud, and S. L. Howell. "Protein kinase C and the regulation of insulin secretion from pancreatic B cells." Journal of Molecular Endocrinology 6, no. 2 (1991): 121–27. http://dx.doi.org/10.1677/jme.0.0060121.

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ABSTRACT Protein kinase C (PKC) has been identified in islets of Langerhans and insulin-secreting tumour cells. Diacylglycerols (DAGs, the endogenous PKC activators) are generated in response to insulin secretagogues, although nutrient and non-nutrient secretagogues generate DAGs of different compositions and of different potencies as PKC activators. Exogenous activators of PKC stimulate insulin secretion from B cells, but attempts to define a physiological role for PKC by using inhibitors of this enzyme have produced ambiguous results. However, in studies using PKC-depleted B cells the loss o

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Talvitie, Topi, and Mikko Koivisto. "Counting and Sampling Markov Equivalent Directed Acyclic Graphs." Proceedings of the AAAI Conference on Artificial Intelligence 33 (July 17, 2019): 7984–91. http://dx.doi.org/10.1609/aaai.v33i01.33017984.

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Exploring directed acyclic graphs (DAGs) in a Markov equivalence class is pivotal to infer causal effects or to discover the causal DAG via appropriate interventional data. We consider counting and uniform sampling of DAGs that are Markov equivalent to a given DAG. These problems efficiently reduce to counting the moral acyclic orientations of a given undirected connected chordal graph on n vertices, for which we give two algorithms. Our first algorithm requires O(2nn4) arithmetic operations, improving a previous superexponential upper bound. The second requires O(k!2kk2n) operations, where k

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Virtanen, Matti. "Dags for alkoholpolitisk konsensus?" Nordic Studies on Alcohol and Drugs 14, no. 1 (1997): 44–46. http://dx.doi.org/10.1177/145507259701400102.

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Fisman, David, and Ashleigh Tuite. "The DAGs of war." Proceedings of the National Academy of Sciences 116, no. 48 (2019): 23880–82. http://dx.doi.org/10.1073/pnas.1916910116.

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Chen, Pang Chieh. "Heuristic sampling on DAGs." Algorithmica 12, no. 6 (1994): 458–75. http://dx.doi.org/10.1007/bf01188715.

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Pang, Chaoyi, Junhu Wang, Yu Cheng, Haolan Zhang, and Tongliang Li. "Topological sorts on DAGs." Information Processing Letters 115, no. 2 (2015): 298–301. http://dx.doi.org/10.1016/j.ipl.2014.09.031.

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RISSET, TANGUY, and YVES ROBERT. "SYNTHESIS OF PROCESSOR ARRAYS FOR THE ALGEBRAIC PATH PROBLEM: UNIFYING OLD RESULTS AND DERIVING NEW ARCHITECTURES." Parallel Processing Letters 01, no. 01 (1991): 19–28. http://dx.doi.org/10.1142/s0129626491000173.

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In this paper, we derive array processors which are synthesized from uniform but non-local DAGs. We introduce limited broadcast facilities that can be adjusted to cope with current integration constraints. Our target problem is the Algebraic Path Problem, whose implementation on systolic architectures has been studied by numerous authors. We show how to compare, to classify and to improve several proposed architectures.

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Zhong, Zhaoqian, and Masato Edahiro. "Model-Based Parallelization for Simulink Models on Multicore CPUs and GPUs." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 20 (January 4, 2020): 1–13. http://dx.doi.org/10.24297/ijct.v20i.8533.

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In this paper we propose a model-based approach to parallelize Simulink models of image processing algorithms on homogeneous multicore CPUs and NVIDIA GPUs at the block level and generate CUDA C codes for parallel execution on the target hardware. In the proposed approach, the Simulink models are converted to directed acyclic graphs (DAGs) based on their block diagrams, wherein the nodes represent tasks of grouped blocks or subsystems in the model and the edges represent the communication behaviors between blocks. Next, a path analysis is conducted on the DAGs to extract all execution paths an

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Laubach, Zachary M., Eleanor J. Murray, Kim L. Hoke, Rebecca J. Safran, and Wei Perng. "A biologist's guide to model selection and causal inference." Proceedings of the Royal Society B: Biological Sciences 288, no. 1943 (2021): 20202815. http://dx.doi.org/10.1098/rspb.2020.2815.

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A goal of many research programmes in biology is to extract meaningful insights from large, complex datasets. Researchers in ecology, evolution and behavior (EEB) often grapple with long-term, observational datasets from which they construct models to test causal hypotheses about biological processes. Similarly, epidemiologists analyse large, complex observational datasets to understand the distribution and determinants of human health. A key difference in the analytical workflows for these two distinct areas of biology is the delineation of data analysis tasks and explicit use of causal direc

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Voudouris, Petros, Per Stenström, and Risat Pathan. "Federated Scheduling of Sporadic DAGs on Unrelated Multiprocessors." ACM Transactions on Embedded Computing Systems 20, no. 5s (2021): 1–25. http://dx.doi.org/10.1145/3477018.

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This paper presents a federated scheduling algorithm for implicit-deadline sporadic DAGs that execute on an unrelated heterogeneous multiprocessor platform. We consider a global work-conserving scheduler to execute a single DAG exclusively on a subset of the unrelated processors. Formal schedulability analysis to find the makespan of a DAG on its dedicated subset of the processors is proposed. The problem of determining each subset of dedicated unrelated processors for each DAG such that the DAG meets its deadline (i.e., designing the federated scheduling algorithm) is tackled by proposing a n

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Greeff, J. C., S. Liu, D. Palmer, and G. B. Martin. "Temporal changes in circulatory blood cell parameters of sheep genetically different for faecal worm egg count and diarrhoea from late summer to spring in a Mediterranean environment." Animal Production Science 60, no. 13 (2020): 1630. http://dx.doi.org/10.1071/an19038.

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Differences in haematology traits were investigated in worm-resistant and worm-susceptible Merino sheep that were genetically prone or less prone to developing diarrhoea in a winter rainfall region. The experiment was a 2 × 2 × 2 × 5 design. Male and female sheep aged 8–9 months old identified as having high (H) or low (L) breeding values for dags (breech soiling) and for worm egg counts (WEC) were allocated to one of four genetic groups: HH, HL, LH and LL (the first letter refers to dags and the second to WEC). The animals were sampled five times from autumn through winter to spring, in March

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Ogunade, Ibukun M., Jerusha Lay, and Kenneth Andries. "PSIX-5 Effects of live yeast on functional attributes of rumen microbiota in beef cattle." Journal of Animal Science 97, Supplement_3 (2019): 394–95. http://dx.doi.org/10.1093/jas/skz258.787.

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Abstract This study applied whole-metagenomics shotgun sequencing to evaluate the effects of live yeast supplementation on functional potential of rumen microbiota in beef cattle. Eight rumen-cannulated Holstein steers were assigned randomly to 1 of 2 treatments in cross-over design with two 25-d experimental periods and a 10-d wash-out between the two periods. The steers were housed in individual pens and were fed 50% concentrate and 50% red clover hay ad libitum. Dietary treatments were (1) control (CON; basal diet) and (2) yeast (YEA; basal diet plus 15 g/d of yeast product; PMI, Arden Hill

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Danger, Jean-Luc, Youssef El Housni, Adrien Facon, et al. "On the Performance and Security of Multiplication in GF(2N)." Cryptography 2, no. 3 (2018): 25. http://dx.doi.org/10.3390/cryptography2030025.

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Multiplications in G F ( 2 N ) can be securely optimized for cryptographic applications when the integer N is small and does not match machine words (i.e., N < 32 ). In this paper, we present a set of optimizations applied to DAGS, a code-based post-quantum cryptographic algorithm and one of the submissions to the National Institute of Standards and Technology’s (NIST) Post-Quantum Cryptography (PQC) standardization call.

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