403,795 research outputs found

    A[fro] scension

    Get PDF
    A research report submitted to the Faculty of Engineering and the Built Environment, University of Witwatersrand, in fulfilment of the requirements for the Degree of Masters of Architecture (Professional), February 2018Afroscension is a mythical construct, in search of a narrative that relates to repressed or forgotten African histories as a foundation for future possible scenario’s, mediated by technology, politics and culture. Summarily the exploration of African mythology and its relationship to architecture becomes important as a catalyst for radical spatial evolution. By basing this investigation on the Afrofuturist philosophy .Afrofuturism begins to forecast alternative scenarios of the past, present and future through investigating the relationship between time and humanity. A(fro)scension can be understood as a portal of time travel. A concept of movement between certain points of time, analogous to movement between different points in space by an object or a person. A(fro)scension steps outside of the usual sense of the perception of time in order to engage public imagination. Afroscension speaks to the idea of architecture as a portal of transcendence into Africa. Where we might eventually become inhabitants of an African universe. Opening portals or windows both into the mythological past of Africa, engaging with memory while projecting itself into the future of the built environment by understanding certain African futurist objectives.XL201

    Sobolev Metrics on Diffeomorphism Groups and the Derived Geometry of Spaces of Submanifolds

    Full text link
    Given a finite dimensional manifold NN, the group DiffS(N)\operatorname{Diff}_{\mathcal S}(N) of diffeomorphism of NN which fall suitably rapidly to the identity, acts on the manifold B(M,N)B(M,N) of submanifolds on NN of diffeomorphism type MM where MM is a compact manifold with dimM<dimN\dim M<\dim N. For a right invariant weak Riemannian metric on DiffS(N)\operatorname{Diff}_{\mathcal S}(N) induced by a quite general operator L:XS(N)Γ(TNvol(N))L:\frak X_{\mathcal S}(N)\to \Gamma(T^*N\otimes\operatorname{vol}(N)), we consider the induced weak Riemannian metric on B(M,N)B(M,N) and we compute its geodesics and sectional curvature. For that we derive a covariant formula for curvature in finite and infinite dimensions, we show how it makes O'Neill's formula very transparent, and we use it finally to compute sectional curvature on B(M,N)B(M,N).Comment: 28 pages. In this version some misprints correcte

    On Construction of Recursion Operators From Lax Representation

    Get PDF
    In this work we develop a general procedure for constructing the recursion operators fro non-linear integrable equations admitting Lax representation. Svereal new examples are given. In particular we find the recursion operators for some KdV-type of integrable equations.Comment: Latex File (AMS format), 23 pages, to be published in Journal of Mathematical Physic

    Carterville Fishery Resources Office

    Get PDF
    Carterville Fishery Resources Office (FRO) was established in 1981 and is located at the Crab Orchard National Wildlife Refuge in Marion, Illinois. The office provides fishery management assistance to other Fish and Wildlife Service offices, federal and state agencies, and Department of Defense military bases in Illinois, Indiana, Missouri, and Ohio. Carterville FRO accomplishes its mission of conserving, enhancing, and protecting fish and aquatic ecosystems by working with partners. Carterville FRO, in partnership with the Columbia FRO, assists the 28 states of the Mississippi Interstate Cooperative Resource Association (MICRA) with a basin-wide paddlefish stock assessment. Carterville FRO has operated a processing center for coded-wire tags and assisted in database management for this national project since 1997. Twenty-three states depend upon these services and are using the data to develop 4 multijurisdictional plans to manage paddlefish with assistance from the Fish and Wildlife Service

    Carterville Fishery Resources Office

    Get PDF
    Carterville Fishery Resources Office (FRO) was established in 1981 and is located at the Crab Orchard National Wildlife Refuge in Marion, Illinois. The office provides fishery management assistance to other Fish and Wildlife Service offices, federal and state agencies, and Department of Defense military bases in Illinois, Indiana, Missouri, and Ohio. Carterville FRO accomplishes its mission of conserving, enhancing, and protecting fish and aquatic ecosystems by working with partners. Carterville FRO, in partnership with the Columbia FRO, assists the 28 states of the Mississippi Interstate Cooperative Resource Association (MICRA) with a basin-wide paddlefish stock assessment. Carterville FRO has operated a processing center for coded-wire tags and assisted in database management for this national project since 1997. Twenty-three states depend upon these services and are using the data to develop 4 multijurisdictional plans to manage paddlefish with assistance from the Fish and Wildlife Service

    Frontier Mountain meteorite specimens of the acapulcoite‐lodranite clan: Petrography, pairing, and parent‐rock lithology of an unusual intrusive rock

    Get PDF
    Abstract— In this paper we reconstruct the heterogeneous lithology of an unusual intrusive rock from the acapulcoite‐lodranite (AL) parent asteroid on the basis of the petrographic analysis of 5 small (<8.3 g) meteorite specimens from the Frontier Mountain ice field (Antarctica). Although these individual specimens may not be representative of the parent‐rock lithology due to their relatively large grain size, by putting together evidence from various thin sections and literature data we conclude that Frontier Mountain (FRO) 90011, FRO 93001, FRO 99030, and FRO 03001 are paired fragments of a medium‐ to coarse‐grained igneous rock which intrudes a lodranite and entrains xenoliths. The igneous matrix is composed of enstatite (Fs13.3 ± 0.4 Wo3.1 ± 0.2), Cr‐rich augite (Fs6.1 ± 0.7 Wo42.3 ± 0.9), and oligoclase (Ab80.5 ± 3.3 Or3.2 ± 0.6). The lodranitic xenoliths show a fine‐grained (average grain size 488 ± 201 μm) granoblastic texture and consist of olivine Fa9.5 ± 0.4 and Fe,Ni metal and minor amounts of enstatite Fs12.7 ± 0.4 Wo1.8 ± 0.1, troilite, chromite, schreibersite, and Ca‐phosphates. Crystals of the igneous matrix and lodranitic xenoliths are devoid of shock features down to the scanning electron microscope scale. From a petrogenetic point of view, the lack of shock evidence in the lodranitic xenoliths of all the studied samples favors the magmatic rather than the impact melting origin of this rock.FRO 95029 is an acapulcoite and represents a separate fall from the AL parent asteroid, i.e., it is not a different clast entrained by the FRO 90011, FRO 93001, FRO 99030, and FRO 03001 melt, as in genomict breccias common in the meteoritic record. The specimen‐to‐meteorite ratio for the AL meteorites so far found at Frontier Mountain is thus 2.5

    Molecular-genetic models for prognosis of development of tumors of reproductive system in women with family history of cancer

    No full text
    Aim: To develop a prognostic molecular genetic model for assessing the risk of development of benign and malignant tumors of female reproductive organs (FRO) in patients from cancer-affected families. Patients and Methods: The work presents the data on a comprehensive clinical examination of 210 women (90 patients with FRO cancer with aggregation of tumor pathology in families, 65 patients with benign pathology of FRO from cancer-affected families, 55 women — control group of healthy women without family history of cancer). Clinical genealogical analysis, morphological examination of tumors and molecular genetic studies of genomic DNA from peripheral blood and tumors were carried out. Results: It was established that in the families of patients with benign and malignant pathology of FRO, malignant tumors associated with Lynch II syndrome are observed. Based on the analysis of detected ESR-1, CYP 2D6*4 and mutations in BRCA1/2 genes in cancer patients and in patients with benign pathology, molecular genetic models have been developed to assess the individual risk of development of benign and malignant tumors of FRO. It has been established that these molecular genetic models and combinations of gene mutations and gene polymorphisms (SNP) by the intergene interaction that was analyzed, were found to be reliable in assessing the risk of benign and malignant pathology of the mammary gland and ovary. Conclusions: The model, which included the polymorphic variants of the T397C(ESR1)/CYP 2D6*4 genes was of the best predictive accuracy for the evaluation of the risk of benign tumors of the FRO (71.68%) and the highest reliability (p < 0.001). At the same time, all identified models of intergene interaction in the development of malignant pathology of FRO were reliable, prognostically significant with high reproduction and almost identical accuracy (65.00–68.23%). The obtained results indicate a high informativeness of such molecular genetic indices as the polymorphism of ESR1 and CYP 2D6*4 genes and mutations in BRCA1/2 genes to assess the risk of benign or malignant tumors of FRO in families of patients with family history of cancer
    corecore