Manufacturing and assembly automation by integrated metrology systems for aircraft wing fabrication

Discrepancies of materials, tools, and factory environments, as well as human intervention, make variation an integral part of the manufacturing process of any component. In particular, the assembly of large volume, aerospace parts is an area where significant levels of form and dimensional variation are encountered. Corrective actions can usually be taken to reduce the defects, when the sources and levels of variation are known. For the unknown dimensional and form variations, a tolerancing strategy is typically put in place in order to minimize the effects of production inconsistencies related to geometric dimensions. This generates a challenging problem for the automation of the corresponding manufacturing and assembly processes. Metrology is becoming a major contributor to being able to predict, in real time, the automated assembly problems related to the dimensional variation of parts and assemblies. This is done by continuously measuring dimensions and coordinate points, focusing on the product's key characteristics. In this paper, a number of metrology focused activities for large-volume aerospace products, including their implementation and application in the automation of manufacturing and assembly processes, are reviewed. This is done by using a case study approach within the assembly of large-volume aircraft wing structures.

Bandwidth programmable optical Nyquist pulse generation in passively mode-locked fiber laser

We propose and numerically demonstrate a novel simple method to produce optical Nyquist pulses based on pulse shaping in a passively mode-locked fiber laser with an in-cavity flat-top spectral filter. The proposed scheme takes advantage of the nonlinear in-cavity dynamics of the laser and offers the possibility to generate high-quality sinc-shaped pulses with widely tunable bandwidth directly from the laser oscillator. We also show that the use of a filter with a corrective convex profile relaxes the need for large nonlinear phase accumulation in the cavity by offsetting the concavity of the nonlinearly broadened pulse spectrum.

VGI quality control

This paper presents a framework for considering quality control of volunteered geographic information (VGI). Different issues need to be considered during the conception, acquisition and post-acquisition phases of VGI creation. This includes items such as collecting metadata on the volunteer, providing suitable training, giving corrective feedback during the mapping process and use of control data, among others. Two examples of VGI data collection are then considered with respect to this quality control framework, i.e. VGI data collection by National Mapping Agencies and by the most recent Geo-Wiki tool, a game called Cropland Capture. Although good practices are beginning to emerge, there is still the need for the development and sharing of best practice, especially if VGI is to be integrated with authoritative map products or used for calibration and/or validation of land cover in the future.

Gazdasági kórkép alulnézetből 2. rész (Syndrome of Hungarian Economy from Bottom-view - part 2.)

A magyar gazdaság új növekedési pályára állása a kilencvenes évek végére tehető, s ebben meghatározó szerepe volt a pótlólagos erőforrásként szolgáló külföldi működőtőke-befektetéseknek. A nemzetközi tőkeáramlás ezredfordulót követő módosulása (csökkenő volumen, változó irányultság) kedvezőtlenül érintette a hazai gazdaságot, aminek egyik következménye a beruházások csökkenése és a növekedési ütem lassulása, másik következménye viszont – a jövedelemkiáramlást semlegesítő hatás elmaradása miatt – a fizetési mérleg romlása. Ebben a helyzetben halaszthatatlanná vált az államháztartási egyensúlyromlás megállítása, illetve a gazdasági fejlődés új alapokra helyezése. A szerző elemzésében – a hazai versenyszektor eredményességi és vagyoni jellemzőinek értékelésével – azt szeretné jelezni, hogy az egyensúlytalansági állapot megszüntetése nem szorítkozhat az államháztartási rendszerre, vagyis az ország helyzetének stabilizálása, majd új növekedési pályára állás nem képzelhető el a gazdaság átfogó modernizációja nélkül. Vizsgálata a ténylegesen működő (343 ezer) hazai társas vállalkozás 2000–2008. évi pénzügyi beszámolóinak adataira épül. Álláspontja szerint a mintavétel nagysága ellensúlyozza az esetleges torzító hatásokat (lásd: helyenként előforduló kreatív beszámolók), így a vállalkozások mennyiségi gyarapodása, méret szerinti megoszlása, a gazdasági tevékenység jellege, a teljesítmények és eredmények alakulása, a vállalkozói vagyon módosulása megbízhatóan értékelhető, illetve a tapasztalatok alapján a korrekciós intézkedések igénye és azok tartalma is jól körvonalazható. Tanulmányát így ajánljuk a téma iránt érdeklődőknek, a versenyszektor szereplőinek, de leginkább a gazdaságpolitika formálóinak. _________ The economic performance during the transition period was characterized by the alternations of fulfilled hopes and unrealized expectations. The economic restructuring and changes in market relations took place during the first decade, while new – mostly foreign – investment groups entered on the new market. As a result the economy was stabilized and was put to a new growth path. But after the millennium the foreign investment based economy development strategy was no more adequate. The new engine for the growth should have been the domestic small and medium enterprise sector (SsME), but despite the subsidies this sector was not strengthened to take this role. The author – the researcher of BCE, and the ex-president of APpEH – analyses the characteristics of the domestic business demography, performance and effectiveness, based on the 2000–2008 annual financial statements of the business sector. In the author’s analysis – with assessment of the domestic business sector and financial performance characteristicst - he would like to point out that the imbalance can not be confined to the elimination of state government system, that is, the country’s situation to stabilize, and then post a new growth path is not conceivable without the modernization of the economy overall. In his view, the sample size outweighed the possible distortionary effects (see occurring in places of creative accounts), so the growth of business volume, size distribution, the nature of economic activity, the evolution of performance and results, a reliable assessment of changes in the business of property and the experience on the basis of the need for corrective action, and its contents are also well delineated. Sstudy it is recommended for those interested in the topic, the business sector actors, but most of the economic policy makers.

Legislating unorthodox taxes: The Hungarian experience

To date, a series of non-traditional schemes have proliferated in the area of tax law, challenging the widely accepted principles of tax legislation. Lump-sum or presumptive taxes, redemption fees or tax amnesty, corrective taxes (bank levies), or confiscatory taxes (e.g., banker bonuses) can hardly be reconciled with the hard core of tax legislation that is established on the principles of equality and legal certainty. The present paper discusses these unorthodox types of public charges.

A tudásérték meghatározása minőségügyi szempontból, hálózatelemzési módszerekkel (The knowledge value in terms of quality with network analysis methods)

A minőségügy egyik kulcsfeladata, hogy azonosítsa az értékteremtés szempontjából kritikus tényezőket, meghatározza ezek értékét, valamint intézkedjen negatív hatásuk megelőzése és csökkentése érdekében. Az értékteremtés sok esetben folyamatokon keresztül történik, amelyek tevékenységekből, elvégzendő feladatokból állnak. Ezekhez megfelelő munkatársak kellenek, akiknek az egyik legfontosabb jellemzője az általuk birtokolt tudás. Mindezek alapján a feladat-tudás-erőforrás kapcsolatrendszer ismerete és kezelése minőségügyi feladat is. A komplex rendszerek elemzésével foglalkozó hálózatkutatás eszközt biztosíthat ehhez, ezért indokolt a minőségügyi területen történő alkalmazhatóságának vizsgálata. Az alkalmazási lehetőségek rendszerezése érdekében a szerzők kategorizálták a minőségügyi hálózatokat az élek (kapcsolatok) és a csúcsok (hálózati pontok) típusai alapján. Ezt követően definiálták a multimodális (több különböző csúcstípusból álló) tudáshálózatot, amely a feladatokból, az erőforrásokból, a tudáselemekből és a közöttük lévő kapcsolatokból épül fel. A hálózat segítségével kategóriákba sorolták a tudáselemeket, valamint a fokszámok alapján meghatározták értéküket. A multimodális hálózatból képzett tudáselem-hálózatban megadták az összefüggő csoportok jelentését, majd megfogalmaztak egy összefüggést a tudáselem-elvesztés kockázatának meghatározására. _______ The aims of quality management are to identify those factors that have significant influence on value production, qualify or quantify them, and make preventive and corrective actions in order to reduce their negative effects. The core elements of value production are processes and tasks, along with workforce having the necessary knowledge to work. For that reason the task-resource-knowledge structure is pertinent to quality management. Network science provides methods to analyze complex systems; therefore it seems reasonable to study the use of tools of network analysis in association with quality management issues. First of all the authors categorized quality networks according to the types of nodes (vertices) and links (edges or arcs). Focusing on knowledge management, they defined the multimodal knowledge network, consisting of tasks, resources, knowledge items and their interconnections. Based on their degree, network nodes can be categorized and their value can be quantified. Derived from the multimodal network knowledge-item network is to be created, where the meaning of cohesive subgroups is defined. Eventually they proposed a formula for determining the risk of knowledge loss.

VLSI testing and characterization system for micro electro-mechanical (MEM) sensors

The purpose of this investigation was to develop and implement a general purpose VLSI (Very Large Scale Integration) Test Module based on a FPGA (Field Programmable Gate Array) system to verify the mechanical behavior and performance of MEM sensors, with associated corrective capabilities; and to make use of the evolving System-C, a new open-source HDL (Hardware Description Language), for the design of the FPGA functional units. System-C is becoming widely accepted as a platform for modeling, simulating and implementing systems consisting of both hardware and software components. In this investigation, a Dual-Axis Accelerometer (ADXL202E) and a Temperature Sensor (TMP03) were used for the test module verification. Results of the test module measurement were analyzed for repeatability and reliability, and then compared to the sensor datasheet. Further study ideas were identified based on the study and results analysis. ASIC (Application Specific Integrated Circuit) design concepts were also being pursued.

Gender politics, women's rights and international norms in Lebanon

The purpose of this dissertation is to investigate the reasons for the under-representation of women in politics in Lebanon, and the role of international norms of gender equality in bringing about change. For those questions, I examined the particular relevance of confessionalism arguing that a confessional social structure and political system empower patriarchal forms of organization with detrimental effects to women's political participation. This dissertation makes innovative contributions to two types of literature. First, literature on the barriers to women being elected into political office has put strong emphasis on electoral systems of representation, but has rarely addressed the way in which electoral systems that seek to ensure minority representation – such as the confessional system in Lebanon – operate to keep women out of politics. This study provides an important corrective to this literature by exploring a non-Western case and broadening theorizing on the issue. Second, constructivist literature in the field of International Relations has argued that international norms of gender equality – including gender quotas – have diffused throughout the 20th century. This research illustrates the mechanisms that counteract international diffusion, and adds to our understanding of how international norms are translated into domestic contexts.

Ecological indicators for system-wide assessment of the greater everglades ecosystem restoration program

Developing scientifically credible tools for measuring the success of ecological restoration projects is a difficult and a non-trivial task. Yet, reliable measures of the general health and ecological integrity of ecosystems are critical for assessing the success of restoration programs. The South Florida Ecosystem Restoration Task Force (Task Force), which helps coordinate a multi-billion dollar multi-organizational effort between federal, state, local and tribal governments to restore the Florida Everglades, is using a small set of system-wide ecological indicators to assess the restoration efforts. A team of scientists and managers identified eleven ecological indicators from a field of several hundred through a selection process using 12 criteria to determine their applicability as part of a system-wide suite. The 12 criteria are: (1) is the indicator relevant to the ecosystem? (2) Does it respond to variability at a scale that makes it applicable to the entire system? (3) Is the indicator feasible to implement and is it measureable? (4) Is the indicator sensitive to system drivers and is it predictable? (5) Is the indicator interpretable in a common language? (6) Are there situations where an optimistic trend with regard to an indicator might suggest a pessimistic restoration trend? (7) Are there situations where a pessimistic trend with regard to an indicator may be unrelated to restoration activities? (8) Is the indicator scientifically defensible? (9) Can clear, measureable targets be established for the indicator to allow for assessments of success? (10) Does the indicator have specificity to be able to result in corrective action? (11) What level of ecosystem process or structure does the indicator address? (12) Does the indicator provide early warning signs of ecological change? In addition, a two page stoplight report card was developed to assist in communicating the complex science inherent in ecological indicators in a common language for resource managers, policy makers and the public. The report card employs a universally understood stoplight symbol that uses green to indicate that targets are being met, yellow to indicate that targets have not been met and corrective action may be needed and red to represent that targets are far from being met and corrective action is required. This paper presents the scientific process and the results of the development and selection of the criteria, the indicators and the stoplight report card format and content. The detailed process and results for the individual indicators are presented in companion papers in this special issue of Ecological Indicators.

Drosophila Flight Stabilization Depends on Apparent Distances in Optic Flow Field

To perform daily flight tasks, insects rely heavily on their visual perception of a dynamic environment. They must process visual signals quickly and accurately and update their behavior. Flies are vulnerable to environmental disturbances, such as gusts of wind blowing them off course, but they may use the altered visual field to compensate and regain their original course. In studies using Drosophila melanogaster, it has been shown that their corrective responses can be analyzed by measuring changes in their wing beats. By enclosing a tethered fly in a cuboidal visual arena displaying a computerized optic flow field, it is possible to calculate the change in wing beat amplitudes from an infrared shadow of its wings using photodiodes and a custom wing beat analyzer. In this experiment, manipulations ofthe optic flow field are used to create a field where points have varying relative forward speed, to study how the insect performs corrective maneuvers. The results show that Drosophila have a stronger corrective response to the quickly moving, apparently near points compared to the slower moving, apparently distant points. This implies the flies are distinguishing points based on their relative speeds, inferring distance, and adjusting their corrective actions with this information.

The Anxious Heart of Injustice: Negative Affective Responses to Disabilities

Essai / Essay

Optimizing the Correction of Memory Errors

People are always at risk of making errors when they attempt to retrieve information from memory. An important question is how to create the optimal learning conditions so that, over time, the correct information is learned and the number of mistakes declines. Feedback is a powerful tool, both for reinforcing new learning and correcting memory errors. In 5 experiments, I sought to understand the best procedures for administering feedback during learning. First, I evaluated the popular recommendation that feedback is most effective when given immediately, and I showed that this recommendation does not always hold when correcting errors made with educational materials in the classroom. Second, I asked whether immediate feedback is more effective in a particular case—when correcting false memories, or strongly-held errors that may be difficult to notice even when the learner is confronted with the feedback message. Third, I examined whether varying levels of learner motivation might help to explain cross-experimental variability in feedback timing effects: Are unmotivated learners less likely to benefit from corrective feedback, especially when it is administered at a delay? Overall, the results revealed that there is no best “one-size-fits-all” recommendation for administering feedback; the optimal procedure depends on various characteristics of learners and their errors. As a package, the data are consistent with the spacing hypothesis of feedback timing, although this theoretical account does not successfully explain all of the data in the larger literature.

The Anxious Heart of Injustice: Negative Affective Responses to Disabilities

Essai / Essay

Inhibitory Control is a Rate-Limiting Factor to Preschoolers' Use of Irregular Inflection

We investigated whether children’s inhibitory control is associated with their ability to produce irregular verb forms as well as learn from corrective feedback following their use of an over-regularized form. Forty-eight 3.5 to 4.5 year old children were tested on the irregular past tense and provided with adult corrective input via models of correct use or recasts of errors following ungrammatical responses. Inhibitory control was assessed with a three-item battery of tasks that required suppressing a prepotent response in favor of a non-canonical one. Results showed that inhibitory control was predictive of children’s initial production of irregular forms and not associated with their post-feedback production of irregulars. These findings show that children’s executive functioning skills may be a rate-limiting factor on their ability to produce correct forms, but might not interact with their ability to learn from input in this domain. Findings are discussed in terms of current theories of past-tense acquisition and learning from input more broadly.

A Anatomia da Gestão Estratégica: neuroeconomia, gestão de recursos humanos e sistema de gestão de qualidade

Contexto: O trabalho que a seguir se apresenta foi elaborado no âmbito de um novo conceito na gestão do desempenho organizacional, a gestão estratégica multidimensional, onde a neuroeconomia foi associada à perspetiva teórica da gestão estratégica de recursos humanos (Dessler, 2005) e à aplicação do sistema de gestão da qualidade (SGQ), da NP 9001: 2008 (Saraiva e tal, 2009), para formar um método eficaz de conceção dos percursos de operacionalização da organização Objetivos: Pretendeu-se construir uma forma anatómica de gestão de desempenho organizacional através dos três conceitos mencionados, num contexto de gestão estratégica multidimensional, possibilitando a sua quantificação pelo nível de implementação dos requisitos para um sistema de gestão de qualidade, com o intuito de verificar sua viabilidade, sendo a resiliência organizacional dependente em grande medida dos recursos humanos, Método: Pelo conjunto das três áreas mencionadas foi criado um guia de atuação abrangendo as bases fundamentais para o desenvolvimento de uma estrutura organizacional: verificação dos níveis de incidência da gestão do desempenho organizacional; caracterização de diferentes tipos de estratégias de intervenção; implementação de estratégias preventivas e estratégias corretivas; utilização das quatro dimensões PIPE – performance, inovação, processos e empenhamento – como estratégias corretivas; integração das estratégias preventivas com as estratégias corretivas; diagnóstico contínuo de situações problema na gestão do desempenho organizacional; conceção de percursos de intervenção na gestão do desempenho organizacional; conceção de um projeto de gestão estratégica. A amostra final é constituída por uma organização do 3ºsetor, nomeadamente uma IPSS, a Associação Recreativa Cultural e Social das Gândaras, na Lousã, no distrito de Coimbra. Resultados: Com efeito, acredita-se que com este trabalho seja possível quantificar o nível de implementação dos requisitos para um SGQ num contexto de gestão estratégica multidimensional. / Context: The work presented below was prepared as part of a new concept in the management of organizational performance, the multidimensional strategic management, which was associated the neuroeconomics perspetive with the human resourses strategic management (Dessler, 2005) and the application of the quality management system (QMS), NP 9001: 2008 (and such Saraiva, 2009), to form an effective method of conception paths of operation of the organization Objetives: It was intended to build an anatomical shape organizational performance management across the three concepts mentioned in the context of multidimensional strategic management, enabling to quantify the level of implementation of the requirements for a quality management system, in order to verify their viability , and the organizational resilience largely dependent on human resources. Method: For all the three areas mentioned has created an action guide covering the fundamentals for developing an organizational structure: the verification of the incidence levels of organizational performance management; characterization of different types of intervention strategies; implementation of preventive strategies and corrective strategies, using the four dimensions PIPE - performance, innovation, processes and commitment - as corrective strategies; integration of preventive strategies with remedial strategies; diagnosis of problem situations in the ongoing management of organizational performance; conception pathways of intervention in the management of organizational performance; conception of a project of strategic management. The final sample consists of an organization of the 3rd setor, an IPSS, the Associação Recreativa Cultural e Social das Gândaras, in Lousã, in the district of Coimbra. Results: In fact, it is believed that this work is possible to quantify the level of implementation of the requirements for a QMS in a multidimensional context of strategic management.