104,502 research outputs found
Correlation between machining direction, cutter geometry and step-over distance in 3-axis milling: Application to milling by zones.
No full textComputer-Aided Manufacturing (CAM) occupies an increasingly important role in engineering with all it has to offer in terms of new possibilities and improving designer/manufacturer productivity. The present study addresses machining of free-form surfaces on a 3-axis NC machine tool. There have recently been a large number of studies devoted to planning tool paths on free-form surfaces with various strategies being adopted. These strategies are intended to increase efficiency by reducing the overall length of machining. Often, the choice of the cutter is arbitrary and the work focuses on planning. In order to boost productivity, the present work offers assistance in choosing the cutting tool, the machining direction and cutting by surface zones, adopting a milling strategy by parallel planes. To do so, a comparison is made between milling using a spherical end milling cutter and a torus end milling cutter with the same outer radius. This comparison relates to the radius of curvature of the trace left by the cutter at the point of contact between the tool and the workpiece in relation to the direction of feed motion
Nonhuman Complexity Poetics: Leaf-Cutter Ants and Multispecies Composition
No full textIn this article I examine leaf-cutter ants, and particularly their nest architecture, in terms of what I call an ‘ethological poetics.’ I propose that thinking about leaf-cutter architecture is an engagement with a radically alternative aesthetics. I begin by contrasting human and insect ontologies, before focusing on ants. I then outline characteristics of leaf-cutter societies. Having established a broad, ontological basis for their production, I conclude by analysing leaf-cutter nest architecture. Leaf-cutter architecture is based not on predetermined plans, but on a transcorporeal poetics of immanence, or a multispecies process of making that is entangled with the living conditions of an environmental field.No Full Tex
cutter n: cutter riding
No full textcutter2 n"Cutter ridin' " which was sledding on the hills [in winter] was very popular.PRINTED ITEM DNE Sup [Is there a sled called the 'cutter'?]G. M. Story MAY 1 1988[check] WKUsed I and SupUsed Sup1Used SupChecked by Jordyn Hughes on Mon 04 Jul 201
Cutter, Frank G.
No full textLillian M. Cutter - wifehttps://stars.library.ucf.edu/cfm-ch-memoranda-1932/1272/thumbnail.jp
Multiple sclerosis: clinical trial design 2019
No full textPURPOSE OF REVIEW: Recent years have seen the approval of more than 15 disease-modifying drugs for multiple sclerosis (MS), mainly for its relapsing-remitting form (RRMS). The focus of the MS clinical trials is moving toward clinical trials aimed at progressive patients or based on putatively neuroprotective compounds. Here we reviewed the challenges of this paradigm shift. RECENT FINDINGS: Progressive MS and neuroprotective drugs trials will both need a change in patients' enrollment criteria, outcome selection, and clinical trials design. Published ocrelizumab Primary Progressive MS data, as well as translational neuroimaging and clinical research suggest that MRI markers of inflammation could be used to enrich progressive MS trials population, albeit with the risk of overestimating the relevance of antiinflammatory therapeutic effects in this population and that conventional MRI-based metrics need to be complemented with volumetric and multiparametric approaches to disease severity quantification. Lastly, regarding statistical design, Bayesian approaches are at last making their way from oncology to neurology improving our ability to evaluate multiple treatments in the same trials' population. SUMMARY: Adequate clinical trials design was one of the key factors in the RRMS treatment success story. Multidisciplinary collaborations are needed to adequately plan the progressive MS and restorative therapies trials that lay ahead in the near future
Stalk-Cutter.
No full textPatent for a new stalk cutter that cuts up stalks, stems of weeds and vines to prepare the field for cultivation. This stalk cutter provides rocking or oscillatory movement regulation to avoid rocks or other obstructions
Cotton Stalk Cutter
No full textPatent for a cotton stalk cutter. This invention is designed for cutting cotton stalks while mounted on an axle, consisting a frame whereby the cutter could be adjusted
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