With the scaling of technology nodes, modern CMOS integrated circuits face severe fundamental challenges that stem from device scaling limitations, interconnection bottlenecks and increasing manufacturing complexities. These challenges drive researchers to look for revolutionary technologies beyond the end of CMOS roadmap. Towards this end, a new nanoscale 3-D computing fabric for future integrated circuits, Skybridge, has been proposed [1]. In this new fabric, core aspects from device to circuit style, connectivity, thermal management and manufacturing pathway are co-architected in a 3-D fabric-centric manner. However, the Skybridge fabric uses only n-type transistors in a dynamic circuit style for logic and memory implementations. Therefore, it requires complicated clocking schemes to overcome signal monotonicity associated with cascading dynamic logic gates. For Skybridge’s large-scale circuits, the dynamic circuit style requires cascaded stages to be micro-pipelined, which results in large number of buffers used for storing minterms causing significant overhead in terms of area and power. Moreover, implementation of logic is limited to NAND or AND-of-NAND based logic expressions, which does not always result in compact circuits. In this work, we propose an extension of original Skybridge fabric, called NP-Dynamic-Skybridge, to solve these challenges by using both n-and p-type transistors in an innovative circuit style. Here, every stage in a given circuit is implemented by either n-type or p-type dynamic logic. Cascading n- and p-type dynamic logic effectively avoids signal monotonicity problem, and allows combinational-like circuit implementation. This helps to simplify the clocking scheme for cascaded logics requiring only one set of global precharge and evaluate clock signals. And also it expands the degree of expressing logic enabling expressions such as NOR, OR-of-NORs, in addition to those previously mentioned. Furthermore, the number of pipeline stages is significantly reduced for a given logic function, and buffer requirements are less compared with Skybridge 3D fabric thus improving on area and power metrics. Initial evaluation for NP-Dynamic-Skybridge’s 4-bit carry look-ahead adder shows up to 2x density benefits over Skybridge 3-D fabric and at least 17% power/throughput benefit.

High defect rates are associated with novel nanodevice-based systems owing to unconventional and self-assembly based manufacturing processes. Furthermore, in emerging nanosystems, fault mechanisms and distributions may be very different from CMOS due to unique physical layer aspects, and emerging circuit and logic styles. Thus, theoretical fault models for nanosystems are necessary to extract detailed characteristics of fault generation and propagation. Using the intuition garnered from the theoretical analysis, modular and structural redundancy schemes can be specifically tailored to the intricacies of the fabric in order to achieve higher reliability of output signals. In this thesis, we develop a detailed analytical fault model for the Nanoscale Application Specific Integrated Circuits (NASIC) fabric that can determine probabilities of output faults taking into account the defect scenarios, the logic and circuit style of the fabric as well as structural redundancy schemes that may be incorporated in the circuits. Evaluation of fault rates using the analytical model for single NASIC tiles show an inequality of the probability of output faulty ‘1’s and ‘0’s. To mitigate the effects of the unequal fault rates, biased voting schemes are introduced and are shown to achieve up to 27% improvement in the reliability of output signals compared to conventional majority voting schemes. NASIC circuits have to be cascaded in order to build larger systems. Furthermore, modular redundancy alone will be insufficient to tolerate high defect rates since multiple input modules may be faulty. Hence incorporation of structural redundancy is crucial. Thus in this thesis, we study the propagation of faults through a cascade of NASIC circuits employing the conventional structural redundancy scheme which is referred to here as the Regular Structural Redundancy. In our analysis we find that although circuits with Regular Structural Redundancy achieve greater signal reliability compared to non-redundant circuits, the signal reliability rapidly drops along the cascade due to an escalation of faulty ‘0’s. This effect is attributed to the poor tolerance of input faulty ‘0’s exhibited by circuits with the Regular Structural Redundancy. Having identified this, we design a new scheme called the Staggered Structural Redundancy prioritizing the tolerance of input faulty ‘0’s. A cascade of circuits employing the Staggered Structural Redundancy is shown to maintain signal reliability greater than 0.98 for over 100 levels of cascade at 5% defect rate whereas the signal reliability for a cascade of circuits with the Regular Structural Redundancy dropped to 0.5 after 7 levels of cascade.

El presente proyecto de investigación se centra en la reducción de la generación de productos defectuosos mediante el uso de la metodología Lean Six Sigma. En primer lugar, se iniciará con el diagnóstico de la situación actual de la empresa en estudio donde se identifica que el FPY se encuentra con el valor de 88.08% del año en estudio, esto representa un total de 11.92% de desperdicio. La investigación contempla el uso de los pasos DMAIC, para poder atender las causas relacionadas al problema; la primera etapa es definir y consiste en la elaboración del Project Charter y del diagrama SIPOC para la caracterización del proceso Extrusión; como segunda etapa es medir y se emplean los histogramas para determinar la distribución de los rechazos, seguidamente se validará el sistema de medición. La etapa de analizar está enfocada a los resultados obtenidos y también se aplicará el FMEA para poder identificar y controlar los riesgos del proceso, en la etapa siguiente se aplicará las herramientas 5S y DOE. Como última etapa se emplearán cartas de control y la elaboración de procedimientos y actividades para la estandarización. Posterior a la implementación, se estima una disminución del índice desperdicio de 11.92% a 10.72%, dicho beneficio se reflejará en un impacto positivo sobre las ventas. De esta forma, las herramientas implementadas y los resultados conseguidos referidos en el artículo pueden servir de punto de partida a nuevos investigadores que desean aumentar la productividad en las empresas del sector. / This research project focuses on reducing the generation of defective products through Lean Six Sigma methodology. At first place, it will begin with the diagnosis of the current situation of the company under study, where FPY KPI is at 88.08% of the year under study, this represents a total of 11.92% of total waste. The investigation contemplates usage of DMAIC steps, to be able to attend the causes related to the problem; The first stage is to define and consists of the elaboration of the Project Charter and the SIPOC diagram for the characterization of the Extrusion process; as a second stage is to measure and histograms are used to determine the distribution of rejections, then measurement system will be validated. The analyze stage is focused on the results obtained and FMEA will also be applied to identify and control the risks of the process, in the next stage the 5S and DOE tools will be applied. As a last stage, control charts and the development of procedures and activities for standardization will be used. After implementation, a decrease in the waste rate is estimated from 11.92% to 10.72%, this benefit will be reflected in a positive impact on sales. In this way, the tools implemented and the results obtained referred in this article can serve as a starting point for new researchers who want to increase productivity in companies in the sector. / Trabajo de Suficiencia Profesional

Indiana University-Purdue University Indianapolis (IUPUI) / Differential exhumation within the eastern Transverse Ranges of southern California has revealed a tilted crustal section that provides a unique view into the architecture of the Mesozoic arc. At the base of this crustal section is a group of well-exposed sheeted plutons. Well-developed, gentle to moderately dipping magmatic and solid-state fabrics within these plutons are regionally consistent, margin-parallel, discordant to internal sheeting and layering, and are generally parallel to equivalent host rock structures and fabrics. In some plutons, magmatic foliations define regional fold structures, thus recording regional contraction during chamber construction. Collectively, field mapping and fabric analyses within these sheeted plutons show that the observed fabric patterns are better explained by regional deformation rather than internal magma chamber processes. This interpretation is in direct contrast to previous mapping in the region. The host rocks also record complex processes during sheeted pluton emplacement. Deflection of host rock foliations and structures into parallelism with pluton contacts suggest that downward ductile flow played a role in making space for these plutons. However, evidence of regional faulting and shearing is not observed, suggesting that they did not play a significant role. Although there is considerable microstructural variability within each pluton, the observed microstructures are generally consistent with a transition from magmatic to submagmatic/ high-temperature solid-state deformation. Magmatic microstructures are defined by euhedral to subhedral plagioclase, hornblende, and biotite that do not show significant internal crystal-plastic deformation. Evidence for high-temperature solid-state deformation includes high-temperature grain boundary migration in quartz, plagaioclase, potassium feldspar, and hornblende; chessboard extinction in quartz; and ductile bending in plagioclase and hornblende. Microstructural observations also indicate that mafic and intermediate compositions record stronger magmatic fabrics than felsic compositions. Based on the structural and microstructural observations presented in this study, I interpret that these sheeted plutons were emplaced into an active continental arc setting that was undergoing regional contraction. The strong magmatic fabrics and high-temperature solid-state overprinting is likely a consequence of regional deformation during crystallization. The weak fabrics within upper crustal plutons relative to the strong fabrics within the mid-crustal plutons suggest that deformation was largely localized to the more compositionally heterogeneous mid-crustal portions of the arc structure.

No description available.

In 1890, famed Scottish novelist Robert Louis Stevenson settled with his family at an estate called Vailima, outside Apia, Samoa, following two years of cruising around the Pacific. While in Oceania, the family assembled a large collection of tapa, or barkcloth, from various islands, the majority of which were received as gifts from Indigenous associates, staff, and dignitaries. These textiles are evidence of, witnesses to, and participants in a remarkably global and interwoven history of Victorian-era colonial exchange. My dissertation utilizes this suite of objects to reposition Stevenson’s legacy in the region as well as to challenge existing methodological norms in the history of collecting, expanding the possibilities of how we determine provenance in the colonial Pacific. Drawing on the framework of collaborative collecting, or co-collecting, established by Sean Mallon, I expand the attribution of this collection to multiple actors, recognizing many proactive Pacific Islanders who strategically gave the family gifts of barkcloth, including chief Mata’afa Iosefo. I also argue that Stevenson’s wife Fanny should be viewed as a passionate collector of barkcloth and I situate her activities in a broader conversation about gender and the controls frequently imposed on female collectors. I turn in closing to contemporary Samoan writers and thinkers, centering their explorations of Stevenson’s legacy in Samoa. The tapas I center are revelatory objects, and studying their exchange illuminates their givers and receivers, as well as the social and cultural networks in which they circulated.

This study is a critique of Aso Ebi in Owambe social uniform and social performance phenomena of the Yoruba culture of Nigeria in West Africa. The Aso Ebi phenomenon is a social uniform that is inextricable from the Owambe spectacle of the Yoruba culture, which, in itself, is a social performance. Aso Ebi is a fabric that is selected, made into garments and worn by groups of people who are related to one another in various ways such as family, friends or comrades. The uniforms are worn for social gatherings, especially celebrations, which are popularly called Owambe. These celebrations are very elaborate and loud, much like a grand spectacle put on to show wealth, unity and flamboyance. The research is the explanation of how the Aso Ebi and Owambe social uniforms manifest themselves and this manifestation is presented through a body of artworks. The artworks seek to expose the unseen actualities involved in participating in these social performances and issues of social survival within these cultural phenomena. The analysis addresses the impacts and influence of conformity in cooperative behaviour by an individual within his/her social identity and relationships. The main question this study addresses is whether the positive factors of unity, social order and expressive visual flamboyance of the social phenomena outweigh the negative impacts particularly on the individuals who participate in these social performances. This is done by acknowledging the experiences of the participating individuals in the conformity and transmission modes of these phenomena in this culture. The visual productions of the concepts in the research are achieved through performance, collages, photography and a sculptural installation. The significance of these emergent visual productions is that they shift the focus from the impression of the group to the conformity by the individual. This highlights the problems faced by the participating individuals in the pursuit and participation of this cultural phenomenon. / Department of Art History, Visual Arts & Musicology / M.A. (Visual Arts)

This study is a critique of Aso Ebi in Owambe social uniform and social performance phenomena of the Yoruba culture of Nigeria in West Africa. The Aso Ebi phenomenon is a social uniform that is inextricable from the Owambe spectacle of the Yoruba culture, which, in itself, is a social performance. Aso Ebi is a fabric that is selected, made into garments and worn by groups of people who are related to one another in various ways such as family, friends or comrades. The uniforms are worn for social gatherings, especially celebrations, which are popularly called Owambe. These celebrations are very elaborate and loud, much like a grand spectacle put on to show wealth, unity and flamboyance. The research is the explanation of how the Aso Ebi and Owambe social uniforms manifest themselves and this manifestation is presented through a body of artworks. The artworks seek to expose the unseen actualities involved in participating in these social performances and issues of social survival within these cultural phenomena. The analysis addresses the impacts and influence of conformity in cooperative behaviour by an individual within his/her social identity and relationships. The main question this study addresses is whether the positive factors of unity, social order and expressive visual flamboyance of the social phenomena outweigh the negative impacts particularly on the individuals who participate in these social performances. This is done by acknowledging the experiences of the participating individuals in the conformity and transmission modes of these phenomena in this culture. The visual productions of the concepts in the research are achieved through performance, collages, photography and a sculptural installation. The significance of these emergent visual productions is that they shift the focus from the impression of the group to the conformity by the individual. This highlights the problems faced by the participating individuals in the pursuit and participation of this cultural phenomenon. / Department of Art History, Visual Arts and Musicology / M. A. (Visual Arts)

Thesis (MBA (Business Management))--University of Stellenbosch, 2009. / ENGLISH ABSTRACT: This report is an evaluation of the impact of the quotas imposed on clothing and textiles imported from China on the clothing and textile manufacturing industry in South Africa. On 28 August 2006 the Government of the Republic of South Africa and the Government of the People’s Republic of China concluded a memorandum in terms of which the export of certain tariff lines of the Chinese textile products to South Africa would be administered in accordance with the volumes specified in the memorandum for a period of two years. The fundamental objective of these import quotas was to provide South African clothing and textile firms the space in which to operate, with the aim of improving competitiveness in domestic and export markets in the long run. The Chinese market-share of South African global clothing imports has risen steadily to the mid-2006 level of just under 75 percent. It was claimed that because of the significant growth in imports from China between 63 000 to 67 000 jobs were lost in the domestic clothing and textile industry from March 2003 to September 2006. The effect of the imposition of the quotas is evaluated by comparing the state of the clothing and textile industry in South Africa prior to 2006, that is pre-quota imposition to the state of the industry up to two years after imposition of the quotas. Reference is made to employment in the clothing and textile industry in South Africa, the size of the industry in South Africa, the position of clothing retailers, labour costs and productivity, as well as the competitiveness of the local clothing and textile industry. The comparison shows that the import quotas did not solve the industry’s woes and that the trends prior to the imposition of the quotas continued. It further shows that the imposition of quotas had a detrimental effect on the welfare of consumers in the country. A change of tack for the industry’s policy makers and businesses is proposed. / AFRIKAANSE OPSOMMING: Die verslag is ‘n evaluering van die impak van kwotas ingestel op die invoer van klerasie en tekstiele vanuit China op die Suid Afrikaanse klerasie- en tekstiel-bedryf. Op 28 Augustus 2006 het die regerings van Suid-Afrika en China ‘n memorandum onderteken ingevolge waarvan die uitvoer van sekere Chinese tekstiel-tarieflyne na Suid-Afrika vir ‘n tydperk van twee jaar beperk sou word tot volumes gespesifiseer in die memorandum. Die doel van hierdie kwotas was om aan Suid Afrikaanse klerasie- en tekstiel-ondernemings die ruimte te skep om handel te dryf en sodoende hul mededingendheid in beide die plaaslike- en uitvoermarkte te verbeter. Die Chinese markaandeel van Suid-Afrikaanse klere-invoere het geleidelik gestyg tot net onder 75 persent in die middel van 2006. Arbeids-organisasies het aangevoer dat die aansienlike toename in invoere van China daartoe gelei het dat tussen 63 000 en 67 000 werksgeleenthede verlore gegaan het in die plaaslike klerasie- en tekstiel-bedryf vanaf Maart 2003 tot September 2006. Die effek van die kwota-instelling word geëvalueer deur die stand van die Suid-Afrikaanse klerasie- en tekstiel-bedryf voor 2006 - dit wil sê voor die instelling van die kwotas - te vergelyk met die stand van die bedryf vir ‘n tydperk van twee jaar ná die instelling van die kwotas. Verwysings word gemaak na die vlak van indiensneming in die Suid Afrikaanse klerasie- en tekstiel-bedryf, die grootte van die plaaslike bedryf, die posisie van klere-kleinhandelaars, arbeidskoste en produktiwiteit, asook die mededingendheid van die plaaslike bedryf. Die vergelyking toon dat die invoer-kwotas nie die bedryf verbeter het nie en dat tendense aanwesig voor die instelling van die kwotas steeds voortduur. Bowendien toon dit dat die instelling van die kwotas ‘n nadelige invloed gehad het op die welvaart van Suid-Afrikaanse verbuikers. ‘n Koersverandering vir die bedryf se beleidmakers en besighede word voorgestel.

<p>The purpose of this thesis is to, from an institutional approach, study how the Stockholm importers within the textile sector adapted their foreign trade to the change in economic policy 1720 through 1738. The focus is to investigate to what extent the introduction of new laws, regulations etc. can be an explanation for what happened to Stockholm’s foreign trade, mainly imports, particularly textile imports during the period. It is mainly the economic policies that had been enacted during the Hornian government and their effects that have been studied. This is a period that has seldom been studied in other research.</p><p>This thesis begins when the Russian raids were over. This was a year when the foreign trade still was relatively free and was untouched by the 17th century’s regulations. After 1721 the policies that would be introduced to increase Sweden's level of self-sufficiency and strengthen ties with the North Sea area had several components. Besides the economic policy, the main sources for the thesis are the city toll records.</p><p>The trade policies in the shape of tolls and fees, import and consumption bans etc. and the commercial policies together became different kinds of political tools used for several purposes. The conclusion of this thesis is that the economic policies made the Stockholm importers adapt their trade to the change. The import bans and sumptuary laws had an effect. The economic policies gave rise to an increase in the import of textile raw materials. The rise in toll costs and import fees contributed to displacing the foreign trade towards other areas. The change in the economic policies was successful in the sense that it gave rise to new conditions for domestic production within the textile sector and forced Stockholm's importers to adapt their foreign trade.</p>