Abstract
This paper presents the development of an add-on for CAD system generating assembly structure automatically based on a given Bill of Materials (BOM). The BOM in Excel format is scanned by ...the system and the system arrange 3D CAD files into assembly at in CATIA V5 CAD system automatically. This program has been tested and succeeded well at compiling 3D assembly based on 3D part file data that is available or not available. If the 3D file is not available then the 3D assembly is still generated according to the assembly structure listed on Excel file but its 3D representation does not appear.
In this study, Greene describes the rise of the lower houses in the four southern royal colonies--Virginia, North Carolina, South Carolina, and Georgia--in the period between the Glorious Revolution ...and the American War for Independence. It assesses the consequences of the success of the lower houses, especially the relationship between their rise to power and the coming of the American Revolution.Originally published in 1963.A UNC Press Enduring Edition -- UNC Press Enduring Editions use the latest in digital technology to make available again books from our distinguished backlist that were previously out of print. These editions are published unaltered from the original, and are presented in affordable paperback formats, bringing readers both historical and cultural value.
The history of themaquiladorashas been punctuated by workers' organized resistance to abysmal working and living conditions. Over years of involvement in such movements, Rosemary Hennessy was struck ...by an elusive but significant feature of these struggles: the extent to which organizing is driven by attachments of affection and antagonism, belief, betrayal, and identification.
What precisely is the "affective" dimension of organizing for justice? Are affects and emotions the same? And how can their value be calculated?Fires on the Bordertakes up these questions of labor and community organizing-its "affect-culture"-on Mexico's northern border from the early 1970s to the present day. Through these campaigns, Hennessy illuminates the attachments and identifications that motivate people to act on behalf of one another and that bind them to a common cause. The book's unsettling, even jarring, narratives bring together empirical and ethnographic accounts-of specific campaigns, the untold stories of gay and lesbian organizers, love and utopian longing-in concert with materialist theories of affect and the critical good sense of Mexican organizers.
Teasing out the integration of affect-culture in economic relations and cultural processes, Hennessy provides evidence that sexuality and gender as strong affect attractors are incorporated in the harvesting of surplus labor. At the same time, workers' testimonies confirm that the capacities for bonding and affective attachment, far from being entirely at the service of capital, are at the very heart of social movements devoted to sustaining life.
We proudly presented the novel sensor system based on intermolecular assembled complexes of two fluorescence sensors and a suitable catecholamine acting as a guest linker by the reaction between ...boronic acid and aldehyde moieties of the sensors with the diol and amine units of catecholamines, respectively. The FRET-on/off induced by the assembly could discriminate structural similarity of catecholamines.
Established in 1659 as Misión de Nuestra Señora de Guadalupe de los Mansos del Paso del Norte, Ciudad Juárez is the oldest colonial settlement on the U.S.-Mexico border-and one of the largest ...industrialized border cities in the world. Since the days of its founding, Juárez has been marked by different forms of conquest and the quest for wealth as an elaborate matrix of gender, class, and ethnic hierarchies struggled for dominance. Juxtaposing the early Spanish invasions of the region with the arrival of late-twentieth-century industrial “conquistadors,” Fragmented Lives, Assembled Parts documents the consequences of imperial history through in-depth ethnographic studies of working-class factory life. By comparing the social and human consequences of recent globalism with the region's pioneer era, Alejandro Lugo demonstrates the ways in which class mobilization is itself constantly being “unmade” at both the international and personal levels for border workers. Both an inside account of maquiladora practices and a rich social history, this is an interdisciplinary survey of the legacies, tropes, economic systems, and gender-based inequalities reflected in a unique cultural landscape. Through a framework of theoretical conceptualizations applied to a range of facets—from multiracial “mestizo” populations to the notions of border “crossings” and “inspections,” as well as the recent brutal killings of working-class women in Ciudad Juárez—Fragmented Lives, Assembled Parts provides a critical understanding of the effect of transnational corporations on contemporary Mexico, calling for official recognition of the desperate need for improved working and living conditions within this community.
Noncovalent systems are adaptive and allow facile processing and recycling. Can they be at the same time robust? How can one rationally design such systems? Can they compete with high-performance ...covalent materials? The recent literature reveals that noncovalent systems can be robust yet adaptive, self-healing, and recyclable, featuring complex nanoscale structures and unique functions. We review such systems, focusing on the rational design of strong noncovalent interactions, kinetically controlled pathway-dependent processes, complexity, and function. The overview of the recent examples points at the emergent field of noncovalent nanomaterials that can represent a versatile, multifunctional, and environmentally friendly alternative to conventional covalent systems.
Colloidosomes are attractive microcarriers for encapsulation and controlled release. If their shell is composed of multiple layers of particles they are very robust against defects, which ensures a ...well-defined permeability. So far most capsules with multilayer particle shells could only be assembled using microfluidic emulsification, a technique that offers unparalleled encapsulation control but that is difficult to scale up for high material throughput. Here we propose a method that allows for high throughput assembly of multiwalled colloidosomes using double emulsion templates made in two simple bulk emulsification steps. Stabilization of the emulsion with interfacially adsorbed particles is key to enable control over the colloidosome architecture, which can display single or multiple internal compartments depending on the magnitude of the applied shear. In addition to the high throughput, our method also allows for the assembly of capsules with magnetically responsive shells and controllable release properties in a size range that has previously not been possible for multiwalled colloidosomes. The potential of such systems is illustrated by producing large quantities of multiwalled colloidosomes that are small enough to display Brownian motion in a fluid and that can be externally triggered to release molecular encapsulants on demand.
Material and energy efficiencies are two key parameters that benchmark the electrochemical energy conversion and storage devices (EECSDs). Maximizing both requires researchers to grasp the limits of ...the physiochemical properties of core electrode materials. Ordered mesoporous materials (OMMs) have been regarded as promising electrode materials; however, their intrinsic deficiencies (e.g., plugs, inaccessible pores, and surfaces) impose limits for wide applications. 2D ordered mesoporous materials (2DOMMs) featured with an extended lateral dimension and a nanometer thickness not only inherit the structure advantages of mesoporous materials, but also have a unique 2D ultrathin feature that can fully address the imperfections of conventional OMMs. Herein, recent achievements on the preparation of 2DOMMs by combining single micelle assembly strategy with 2D bottom‐up patterning techniques including the molecular/space confined, interfacial orientated, and surface limited assembly are focused. Special focus is devoted to the newly developed synthetic strategies and their fundamental mechanisms for accurate control of some key structural parameters. Recent advances of 2DOMMs in EECSDs are also highlighted, which suggest that 2DOMMs are excellent material platforms for developing new battery chemistry as well as targeting performance optimization and cost reduction. Finally, the challenges and prospects are proposed based on current development.
The recent achievements in the preparation of 2D ordered mesoporous materials (2DOMMs) for high performance electrochemical energy conversion and storage devices by combining a single micelle assembly strategy with 2D bottom‐up patterning techniques including the confined, interfacial orientated (solid surface, 2D free‐standing surface, and lamellar surface), and surface limited assembly are reviewed.
The 4th industrial revolution (Industry 4.0, I4.0) is based upon the penetration of many new technologies to the industrial world. These technologies are posed to fundamentally change assembly lines ...around the world. Assembly systems transformed by I4.0 technology integration are referred to here as Assembly 4.0 (A4.0). While most I4.0 new technologies are known, and their integration into shop floors is ongoing or imminent, there is a gap between this knowledge and understanding the form and the impact of their full implementation in assembly systems. The path from the new technological abilities to improved productivity and profitability has not been well understood and has some missing parts. This paper strives to close a significant part of this gap by creating a road map to understand and explore the impact of typical I4.0 new technologies on A4.0 systems. In particular, the paper explores three impact levels: strategic, tactical, and operational. On the strategic level, we explore aspects related to the design of the product, process, and the assembly system. Additionally, the paper elaborates on likely changes in assembly design aspects, due to the flexibility and capabilities that these new technologies will bring. Strategic design also deals with planning and realizing the potential of interactions between sub-assembly lines, kitting lines, and the main assembly lines. On the tactical level, we explore the impact of policies and methodologies in planning assembly lines. Finally, on the operational level, we explore how these new capabilities may affect part routing and scheduling including cases of disruptions and machine failures. We qualitatively assess the impact on performance in terms of overall flow time and ability to handle a wide variety of end products. We point out the cases where clear performance improvement is expected due to the integration of the new technologies. We conclude by identifying research opportunities and challenges for advanced assembly systems.
The study of ecological networks has progressively evolved from a mostly descriptive science to one that attempts to elucidate the processes governing the emerging structure of multitrophic ...communities. To move forward, we propose a conceptual framework using trait‐based inference of ecological processes to improve our understanding of network assembly and our ability to predict network reassembly amid global change. The framework formalizes the view that network assembly is governed by processes shaping the composition of resource and consumer communities within trophic levels and those dictating species’ interactions between trophic levels. To illustrate the framework and show its applicability, we (1) use simulations to explore network structures emerging from the interactions of these assembly processes, (2) develop a null model approach to infer the processes underlying network assembly from observational data, and (3) use the null model approach to quantify the relative influence of bottom‐up (resource‐driven) and top‐down (consumer‐driven) assembly modes on plant–frugivore networks along an elevational gradient. Simulations suggest that assembly processes governing the formation of pairwise interactions have a greater influence on network structure than those governing the composition of communities within trophic levels. Our case study further shows that the mode of network assembly along the gradient is mainly bottom‐up controlled, suggesting that the filtering of plant traits has a larger effect on network structure relative to the filtering of frugivore traits. Combined with increasingly available trait and interaction data, the framework provides a timely toolbox to infer assembly processes operating within and between trophic levels and to test competing hypotheses about the assembly mode of resource–consumer networks along environmental gradients and among biogeographic regions. It is a step toward a more process‐based network ecology and complete integration of multitrophic interactions in the prediction of future biodiversity.
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