Common notions and composite collaborations: Thinking with Spinoza to design urban infrastructures for human and wild cohabitants

This paper explores the ways in which we might construct urban environments that are responsible to the needs of more than just human cohabitants. Drawing on Spinoza’s common notion and attentive to the possibilities of socio-natures that both construct and respond to the habitat needs of urban wildlife, I look at how urban design and wildlife habitat might be thought and planned together as a human/non-human composite, invoking a complex spatial and temporal choreography which serves divergent needs. Drawing on examples of urban design in Toronto, Canada, this paper offers a way to think of the city as a composite body in Spinoza’s terms, to become open to an awareness of the city as a composition of forces—a choreography of bodies that are constantly interweaving and overflowing imagined boundaries, struggles that are fought as much over time as space, the accommodation of the temporalities and spatialities of other life processes, other rhythms and cycles that would, without a recalibration, sync uneasily with the pacing and spacing of human requirements.

Digitization of the multi-compositional Storkwitz carbonatite diatreme (Delitzsch Complex, Germany)

<p> </p><p>The Storkwitz diatreme is a multiphase composite body within the Late Cretaceous Delitzsch Complex in north-western Saxony, Germany. The lithology of the Delitzsch Complex varies from rauhaugite and fenite aureole to ultramafic and alkaline lamprophyric intrusions (dykes, sills and pipe-shaped bodies) accompanied by the formation of diatremes of variable composition (Krüger et al., 2013; Röllig et al., 1990). The final stages are represented by beforsite and alvikite dykes (Röllig et al., 1990). The multi-component nature of the Storkwitz diatreme can be attributed to the formation of polymict breccias and numerous injections of compositionally varied carbonatites (Gevorgyan et al., 2020; Seifert et al., 2000).  </p><p>The entire area was extensively explored through an intensive drilling campaign by the <em>SDAG Wismut</em> between 1972 and 1989, due to a locally increased REE content. For a better understanding of the development of the diatreme, detailed petrographical observations and new imaging methods on extensive drill core material were applied. The combination of microscopic images and high-resolution 2D-images allows to create 3D-models of drill core sections via photogrammetry. Identifying the components (xenoliths and intraclasts) and analyzing the pattern of their distribution in the 3D-models of drill cores will enable obtaining textural information of the minerals within the rocks.</p><p>Further investigations using Hyperspectral Imaging (HIS) for chemical information, to be carried out in cooperation with the <em>Institute for Mine Surveying and Geodesy, TU Bergakademie Freiberg</em>, combined with mineralogical information and 3D-models, will provide new insights into the shape and geometry of the diatreme body.</p><p> </p><p><strong>References</strong></p><p>Gevorgyan, H., Schmidt, S., Kogan, I., Lapp, M., 2020. EGU2020-10678.</p><p>Krüger, J.C., Romer, R.L., Kämpf, H., 2013. Chemical Geology, 353, 140-150.</p><p>Röllig, G., Viehweg, M., Reuter, N., 1990. Zeitschrift für Angewandte Geologie, 36, 49-54.</p><p>Seifert, W., Kämpf, H., Wasternack, J., 2000. Lithos, 53, 81-100.</p>

Assessment of Body Size by Structural Equation Model Using Anthropometric Traits of Fishermen Community: A Methodological Approach

Objectives Aim of the study was to develop a ‘composite body size score’ (CBSS) using anthropometric traits to estimate body size and to assess the nutritional status of each study individual on the basis of CBSS. Materials and Methods Data on seventeen anthropometric traits were collected from 710 individuals (Male, Female) from fishermen community inhabiting coastal villages of West Bengal, India. For estimating body sizes, Structural Equation Model (SEM) was constructed with Path Analysis (PA). Later, second order Confirmatory Factor Analysis (CFA) was applied on SEM to determine CBSS. It was hypothesized in the models that CBSS is composed with three sets of latent variables viz., linear, circular and skinfold, constructed from anthropometric traits. Applying new derived optimal cut off points of CBSS was used to determine lean, normal and robust body sizes. Individuals with negative values of CBSS were categorised as lean body size,. Positive values of CBSS were categorised into two categories- normal and robust body size. Results On the basis of CBSS, result showed that 50.6%, 48.8% and 0.6% of the individuals were categorised under lean, normal and robust body size respectively. Females showed relatively higher percent of lean body size i.e. under nutrition (73.8%) compared to males (26.2%). Conclusion The hypothesized model estimate more accurate composite body size score, based on anthropometric traits. All the traits are highly significant on the model. The lean body size category can be use in predicting ‘Undernutrition’.

Calculation justification for replacing the strengtheing agent of the composite hull of the catamaran type vessel

Статья посвящена вопросам проектирования корпусов судов из полимерных композиционных материалов. В качестве объекта исследования рассматривается прототип судна-катамарана. Целью работы является модификация композитного корпуса прототипа, предполагающая замену армирующего элемента в композиционном материале с углеродных волокон на стеклянные в целях снижения стоимости конструкции. Основными задачами работы являются разработка модифицированной структуры элементов конструкции корпуса на основе анализа прочности, а также анализ экономической эффективности выполненной модификации. Анализ прочности композитных конструкций корпуса выполняется с помощью прямого конечно-элементного (КЭ) моделирования с применением системы КЭ анализа ANSYS Mechanical APDL. Расчётная методика основана на требованиях классификационных сообществ DNV GL и Российского морского регистра судоходства (РМРС). В результате работы на основе многовариантного конечно-элементного анализа выполнена модификация существующего проекта судна под материал с существенно отличающимися прочностными и жесткостными характеристиками при минимальном изменении геометрии корпусных элементов. Обоснована возможность уменьшения затрат на материал корпуса в 1.5-2- раза при незначительном увеличении водоизмещения и с условием обеспечения прочности корпуса в соответствии с требованиями международных и российских классификационных сообществ. The article is devoted to the issues of designing ship hulls from polymer composite materials. A prototype of a catamaran ship is considered as an object of research. The aim of the work is to modify the composite body of the prototype, which involves replacing the strengthening element in the composite material from carbon fibers to glass ones in order to reduce the cost of the structure. The main tasks of the work are the development of a modified structure of the hull structural elements based on the strength analysis, as well as the analysis of the economic efficiency of the modification. Strength analysis of composite hull structures is performed using direct finite element (FE) modeling using the ANSYS Mechanical APDL FE analysis system. The calculation method is based on the requirements of the classification associations (DNV GL) and the Russian Maritime Register of Shipping (RMRS). As a result of the work, on the basis of multivariate finite element analysis, the existing ship design has been modified for material with significantly different strength and stiffness characteristics with minimal changes in the geometry of the hull members. The possibility of reducing the cost of the hull material by 1.5-2 times with a slight increase in displacement and with the condition of ensuring the strength of the hull in accordance with the requirements of international and Russian classification associations has been substantiated.