1,677 research outputs found
‘Flint and Straw’ Interview with Jonathan Gibbs by Ana Ibarra
No full textELEPHANT 6, The Arts and Visual Culture Magazine, February 2011 – ‘Flint and Straw’ Interview with Jonathan Gibbs by Ana Ibarra, 6 pages, 8 Illustrations
So You Want Your Child to Be a Genius?
No full textGeneticist Jonathan Flint reviews David Plotz's boo
Genes contributing to variation in fear-related behaviour
No full textAnxiety and depression are highly prevalent diseases with common heritable elements, but the particular genetic mechanisms and biological pathways underlying them are poorly understood. Part of the challenge in understanding the genetic basis of these disorders is that they are polygenic and often context-dependent. In my thesis, I apply a series of modern statistical tools to ascertain some of the myriad genetic and environmental factors that underlie fear-related behaviours in nearly two thousand heterogeneous stock mice, which serve as animal models of anxiety and depression. Using a Bayesian method called Sparse Partitioning and a frequentist method called Bagphenotype, I identify gene-by-sex interactions that contribute to variation in fear-related behaviours, such as those displayed in the elevated plus maze and the open field test, although I demonstrate that the contributions are generally small. Also using Bagphenotype, I identify hundreds of gene-by-environment interactions related to these traits. The interacting environmental covariates are diverse, ranging from experimenter to season of the year. With gene expression data from a brain structure associated with anxiety called the hippocampus, I generate modules of co-expressed genes and map them to the genome. Two of these modules were enriched for key nervous system components — one for dendritic spines, another for oligodendrocyte markers — but I was unable to find significant correlations between them and fear-related behaviours. Finally, I employed another Bayesian technique, Sparse Instrumental Variables, which takes advantage of conditional probabilities to identify hippocampus genes whose expression appears not just to be associated with variation in fear-related behaviours, but cause variation in those phenotypes
Comparing the Formation and Characteristics of Use-Wear Traces on Flint, Chert, Dolerite and Quartz
No full textUse-wear traces are considered to be material specific. The use of an appropriate reference collection is thus fundamental for interpreting tools' function. To test whether a flint reference collection can be used to interpret the function of non-flint tools, I conducted experiments using chert, dolerite, and quartz endscrapers and flakes. I compared wear traces obtained during the experiment with use-wear on experimental flint tools exposed to the same variables (motion, contact material, time). The results highlighted strong similarities in the characteristics and distribution of traces on chert and flint. Dolerite and quartz differ from flint, especially regarding the distribution and appearance of use-polish. However, shared traits were observed in all the raw materials involved in this experiment, demonstrating a certain degree of comparability between use-wear traces on flint and non-flint rocks. Based on the data, a flint reference collection can allow a basic interpretation of use-wear also on different rocks.Team Joris Di
Neotrichia contrerasi Harris and Flint 2016, new species
No full textNeotrichia contrerasi Harris and Flint, new species Fig. 3 Neotrichia contrerasi is another member of the canixa group of Keth et al. (2015) with some similarity to N. tauricornus Malicky in the structure of the subgenital plate and the inferior appendages. It differs from N. tauricornis and other members of the canixa group in the combination of small, widely spaced horns of the tenth tergite, the evenly divided branches of the bracteoles, and the elongate ventral process of the subgenital plate. Male. Length 2.0 – 2.2 mm. 18 antennal segments, body brown in alcohol. Abdominal segment VIII annular. Segment IX incomplete dorsolaterally, posteriorly truncate with setal-bearing lobe on dorsum, anteriorly rounded; in ventral view deeply incised on posterior and anterior margins; dorsally fused with segment X. Tergite X wide, with broad incision posteriorly creating small lateral horns; in lateral view elongate, narrowing posteriorly to acute apex. Subgenital plate in lateral view narrowing distally to elongate process, which extends ventrad to tip of inferior appendages; in ventral view narrow over length, T-shaped apically with pair of elongate mesal setae. Bracteoles bifid, dorsal branch slightly longer than the ventral branch, each with long seta apically. Inferior appendages wide basally, tapering distally, ventral process about half length of appendage; in ventral view nearly extending to tip of subgenital plate, wide basally, tapering distally and curved mesad, mesal processes short and stout bearing apical seta. Phallus tubular, constricted at mid-length and bearing thin paramere encircling shaft, apex divided into pair of elongate processes, which are at an angle to the shaft, ejaculatory duct protruding distally. Type material. Holotype, male - Mexico, Nuevo Leon, Municipio de Santiago, Rio Ramos at Los Adjuntas, 4.5 km southeast Puerto Genovevo, N25 o 18’, W100 o 08’, 12 May 1989, S. Harris and A. Contrera s (NMNH). Paratypes - same as holotype, 4 males (INHS, NMNH), United States, Arizona, Coconino County, West Fork Oak Creek, A79-17, 9 August 1979, M. Sanderson, 1 male (INHS). Etymology. Named for Atilano Contreras-Ramos who collected the species with the senior author and has contributed much to our knowledge of the aquatic insects of Mexico.Published as part of Harris, Steven C. & Oliver S. Flint, Jr., 2016, New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize, pp. 1-22 in Insecta Mundi 2016 (499) on page 3, DOI: 10.5281/zenodo.517072
Economy of the Ancient settlers of Lithuania: flint and amber
No full textStraipsnyje aptariami titnago gavybos, perdirbimo ir prekybos ypatumai Rytų Baltijos šalyse nuo mezolito iki senojo bronzos amžiaus. Aiškinami titnago išgavimo, gabenimo ir perdirbimo būdai. Išanalizuota titnago teritorijų reikšmė ir jų įtaka ne titnago teritorijoms. Autorius analizuoja gintaro gavybos, perdirbimo ir eksporto, kaip atskiros ūkio šakos, pradžią.The article discusses the peculiarities of flint extraction, processing and trade in the Eastern Baltics from Mesolithic to the old Bronze Age. The ways of flint extraction, transportation and processing are explained. The significance of flint territories and their influence on non-flint territories arc analysed. The author analyses the beginning of amber extraction, processing and export, as a separate branch of economy
Assessment of the state of conservation of a Middle Neolithic flint mine in Maastricht limestone
No full textUpper Cretaceous Maastricht limestone ("mergel") outcrops in the provinces of Dutch and Belgian Limburg. The Upper Cretaceous in the Netherlands consists of the geological Maastricht Formation and the upper part of the Gulpen Formation. Limestones from the Maastricht Formation represent one of the few native Dutch natural stones used for building and construction. Locally, limestone from both formations contains considerable amounts of flint. This flint has been mined in Neolithic times, both from the Lanaye limestone in the Gulpen Formation and the Emael Limestone in the Maastricht Formation. Around the village of Valkenburg aan de Geul, flint was mined from the latter. In the current study, the state of conservation of a Middle Neolithic flint mine situated at the Plenkertweg in Valkenburg aan de Geul is assessed, 8 years after the site was discovered and exposed.RMIT en Media StudiesArchitectur
Health Occupations Credentialing
No full textThis study examines the legitimacy and effectiveness of health occupations credentialing as a mechanism for protecting the public from incompetent providers. The past history and present status are described and contrasted with a normative model for competency assessment. Pertinent economic and political issues are also presented. The present system, with modifications suggested, is selected as the best normative course for future policy action based upon the findings of the study. At the time this study was performed the author was employed as the Assistant Director of Physical Therapy at Flint Osteopathic Hospital in Flint, Michigan.Master of Public AdministrationPublic AdministrationUniversity of Michigan-Flinthttps://deepblue.lib.umich.edu/bitstream/2027.42/143375/1/Melko.pd
TO THE RESCUE OF PRE-HISTORIC FLINT PITS
No full textAfter giving a short history of flint pits within the
territory of Poland of whom those oldest may be dated
as far (back as some 20 000 years ago the author
described the state of preservation of these pits, ditches
and areas in which were manufactured the
flint implements stating that they disappear as a consequence
of extensive deep plouhings. As a quite rare
exception can be quoted here the flint pit a t Krzemionki
Opatowskie that has heen subjected to strict
protection.
Concluding his considerations the author advanced
a proposal that all traces of pre-historic mining be
carefully safeguarded for the future generations through
purchasing of soils and forming of archaeological
sites
Conducting a Community-Based ESOL Programme Needs Analysis
No full textThis article traces a community-based participatory action research (CBPAR) project which engaged local non-profits and the immigrant community in Flint, Michigan, USA, to identify areas for growth in support of local immigrant-background residents. Collaborative data-gathering began in 2015 with the creation of a community asset map which outlined existing services available to immigrants, as well as potential areas for growth. This was followed by a series of linguistically and culturally sensitive focus groups with immigrant-background participants. The use of CBPAR was foundational to this study because it engaged the local community in the needs analysis process and resulted in the development of grassroots ESOL programming. The article outlines steps and recommendations for community-based participatory ESOL needs analysis that can be applied to other geographical regions and ESOL programmes.UM-Flint RCAC GrantPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/154732/1/5816791[1]http://deepblue.lib.umich.edu/bitstream/2027.42/154732/3/ccaa011.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/154732/5/Feuerherm_OriginalVersion.docxDescription of 5816791[1] : file from author, replaced by "author's original version"Description of ccaa011.pdf : published version, hiddenDescription of Feuerherm_OriginalVersion.docx : Author's original versio
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