Browsing FAS Scholarly Articles by Title

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    • Distributed, Secure Load Balancing with Skew, Heterogeneity, and Churn 

      Ledlie, Jonathan; Seltzer, Margo (IEEE Computer and Communications Societies, 2005)
      Numerous proposals exist for load balancing in peer-to-peer (p2p) networks. Some focus on namespace balancing, making the distance between nodes as uniform as possible. This technique works well under ideal conditions, but ...

    • The distribution and chemistry of H2CO in the DM Tau protoplanetary disk 

      Loomis, Ryan; Cleeves, Lauren Ilsedore; Oberg, Karin; Guzman, Viviana V.; Andrews, Sean M. (IOP Publishing, 2015)
      H2CO ice on dust grains is an important precursor of complex organic molecules (COMs). H2CO gas can be readily observed in protoplanetary disks and may be used to trace COM chemistry. However, its utility as a COM probe ...

    • The Distribution and Evolution of Microbial Life in the Late Proterozoic Era 

      Knoll, Andrew (Annual Reviews, 1985)
      Until recently, it was possible to discuss pattern in the Precambrian fossil record in terms of three benchmark fossil assemblages conveniently dated at approximately 3000, 2000, and 1000 million years before the present ...

    • Distribution and fate of selected oxygenated organic species in the troposphere and lower stratosphere over the Atlantic 

      Singh, H.; Chen, Y.; Tabazadeh, A.; Fukui, Y.; Bey, I.; Yantosca, Robert M.; Jacob, Daniel James; Arnold, F.; Wohlfrom, K.; Atlas, E.; Flocke, F.; Blake, D.; Blake, N.; Heikes, B.; Snow, J.; Talbot, R.; Gregory, G.; Sachse, G.; Vay, S.; Kondo, Yasuyuki (Wiley-Blackwell, 2000)
      A large number of oxygenated organic chemicals (peroxyacyl nitrates, alkyl nitrates, acetone, formaldehyde, methanol, methylhydroperoxide, acetic acid and formic acid) were measured during the 1997 Subsonic Assessment ...

    • Distribution and mixing of old and new nonstructural carbon in two temperate trees 

      Richardson, Andrew D; Carbone, Mariah S; Huggett, Brett A; Furze, Morgan E; Czimczik, Claudia I; Walker, Jennifer C; Xu, Xiaomei; Schaberg, Paul G; Murakami, Paula (BlackWell Publishing Ltd, 2015)
      We know surprisingly little about whole-tree nonstructural carbon (NSC; primarily sugars and starch) budgets. Even less well understood is the mixing between recent photosynthetic assimilates (new NSC) and previously stored ...

    • Distribution behavior of superparamagnetic carbon nanotubes in an aqueous system 

      Bai, Xue; Liu, Yuqi; Yu, Lu; Hua, Zulin (Nature Publishing Group, 2016)
      This study investigates the distribution behavior of superparamagnetic multiwalled carbon nanotubes (SPM-MWCNTs) in an aqueous system containing Lake Tai sediment. Specifically, the effects of dissolved organic matter (DOM) ...

    • Distribution of a Chimpanzee Social Custom Is Explained by Matrilineal Relationship Rather Than Conformity 

      Wrangham, Richard W.; Koops, Kathelijne; Machanda, Zarin Pearl; Worthington, Steven; Bernard, Andrew B.; Brazeau, Nicholas F.; Donovan, Ronan; Rosen, Jeremiah; Wilke, Claudia; Otali, Emily; Muller, Martin N. (Elsevier BV, 2016)
      High-arm grooming is a form of chimpanzee grooming in which two individuals mutually groom while each raising one arm. Palm-to-palm clasping (PPC) is a distinct style of high-arm grooming in which the grooming partners ...

    • Distributions of Flux Vacua 

      Denef, Frederik; Douglas, Michael R. (American Institute of Physics, 2004)
      We give results for the distribution and number of flux vacua of various types, supersymmetric and nonsupersymmetric, in IIb string theory compactified on Calabi-Yau manifolds. We compare this with related problems such ...

    • Distributions of Nonsupersymmetric Flux Vacua 

      Denef, Frederik; Douglas, Michael R. (Institute of Physics, 2005)
      We continue the study of the distribution of nonsupersymmetric flux vacua in IIb string theory compactified on Calabi-Yau manifolds, as in hep-th/0404116. We show that the basic structure of this problem is that of ...

    • Distributive Politics and Economic Growth 

      Alesina, Alberto; Rodrik, Dani (MIT Press, 1994)
      We study the relationship between politics and economic growth in a simple model of endogenous growth with distributive conflict among agents endowed with varying capital/labor shares. We establish several results regarding ...

    • DISTROY: Detecting Integrated Circuit Trojans with Compressive Measurements 

      Gwon, Youngjune Lee; Kung, H. T.; Vlah, Dario (2012-12-05)
      Detecting Trojans in an integrated circuit (IC) is an important but hard problem. A Trojan is malicious hardware it can be extremely small in size and dormant until triggered by some unknown circuit state. To allow wake-up, ...

    • Disulfide-Based Diblock Copolymer Worm Gels: A Wholly-Synthetic Thermoreversible 3D Matrix for Sheet-Based Cultures 

      Simon, Karen Alambra; Warren, Nicholas J.; Mosadegh, Bobak; Mohammady, Marym R.; Whitesides, George McClelland; Armes, Steven P. (American Chemical Society (ACS), 2015)
      It is well-known that 3D in vitro cell cultures provide a much better model than 2D cell cultures for understanding the in vivo microenvironment of cells. However, significant technical challenges in handling and analyzing ...

    • A diurnal serum lipid integrates hepatic lipogenesis and peripheral fatty acid utilization 

      Liu, Sihao; Brown, Jonathan D.; Stanya, Kristopher J.; Homan, Edwin; Leidl, Mathias; Inouye, Karen; Bhargava, Prerna; Gangl, Matthew R.; Dai, Lingling; Hatano, Ben; Hotamisligil, Gökhan S.; Saghatelian, Alan; Plutzky, Jorge; Lee, Chih-Hao (2014)
      Food intake increases the activity of hepatic de novo lipogenesis, which mediates the conversion of glucose to fats for storage or utilization. In mice, this program follows a circadian rhythm that peaks with nocturnal ...

    • Diurnal variation in salivary cortisol across age classes in Ache Amerindian males of Paraguay 

      Amir, Dorsa; Ellison, Peter T.; Hill, Kim R.; Bribiescas, Richard G. (Wiley-Blackwell, 2014)
      Objectives: Cortisol levels exhibit a diurnal rhythm in healthy men, with peaks in the morning and troughs in the evening. Throughout age, however, this rhythm tends to flatten. This diurnal flattening has been demonstrated ...

    • The Divergence of Legal Procedures 

      Balas, Aron; La Porta, Rafael; Lopez-de-Silanes, Florencio; Shleifer, Andrei (American Economic Association, 2009)
      Djankov et al. (2003a) propose and measure for 109 countries in the year 2000 an index of formalism of legal procedure for two simple disputes: eviction of a non-paying tenant and collection of a bounced check. For a ...

    • Divergence of transcriptional landscape occurs early in B cell activation 

      Fowler, Trent; Garruss, Alexander S; Ghosh, Amalendu; De, Supriyo; Becker, Kevin G; Wood, William H; Weirauch, Matthew T; Smale, Stephen T; Aronow, Bruce; Sen, Ranjan; Roy, Ananda L (BioMed Central, 2015)
      Background: Signaling via B cell receptor (BCR) and Toll-like receptors (TLRs) results in activation of B cells with distinct physiological outcomes, but transcriptional regulatory mechanisms that drive activation and ...

    • Divergence time estimates and the evolution of major lineages in the florideophyte red algae 

      Yang, Eun Chan; Boo, Sung Min; Bhattacharya, Debashish; Saunders, Gary W.; Knoll, Andrew Herbert; Fredericq, Suzanne; Graf, Louis; Yoon, Hwan Su (Springer Nature, 2016)
      The Florideophyceae is the most abundant and taxonomically diverse class of red algae (Rhodophyta). However, many aspects of the systematics and divergence times of the group remain unresolved. Using a seven-gene concatenated ...

    • Divergent dysregulation of gene expression in murine models of fragile X syndrome and tuberous sclerosis 

      Kong, Sek Won; Sahin, Mustafa; Collins, Christin D; Wertz, Mary H; Campbell, Malcolm G; Leech, Jarrett D; Krueger, Dilja; Bear, Mark F; Kunkel, Louis M; Kohane, Isaac S (BioMed Central, 2014)
      Background: Fragile X syndrome and tuberous sclerosis are genetic syndromes that both have a high rate of comorbidity with autism spectrum disorder (ASD). Several lines of evidence suggest that these two monogenic disorders ...

    • Divergent genetic mechanisms underlie reversals to radial floral symmetry from diverse zygomorphic flowered ancestors 

      Zhang, Wenheng; Steinmann, Victor W.; Nikolov, Lachezar; Kramer, Elena M.; Davis, Charles C. (Frontiers Media S.A., 2013)
      Malpighiaceae possess flowers with a unique bilateral symmetry (zygomorphy), which is a hypothesized adaptation associated with specialization on neotropical oil bee pollinators. Gene expression of two representatives of ...

    • Divergent Mating Systems and Parental Conflict as a Barrier to Hybridization in Flowering Plants 

      Brandvain, Yaniv; Haig, David (University of Chicago Press, 2005)
      Parental conflicts can lead to antagonistic coevolution of the sexes and of parental genomes. Within a population, the resulting antagonistic effects should balance, but crosses between populations can reveal conflict. ...