Dimensão educativa do trabalho: estudo de caso da associação de bordadeiras do Seridó ABS- Caicó/ Rio Grande do Norte

This current work s contains issues about the educative dimension of work and its organization s process and managing for it own professionals. It aims to understand how the skills and pedagogic process, in a educative praxis perspective. Are based in a new culture of work of education process an work managing by workers in Handcraft Association of Serido/ Caicó/ RN. It uses as a methodologic-theoric reference cases s study approach, selecting the procedures of part extructure interview. It was done with six embroidereses from the Handcraft Association. The research shows that the educative process of learning and knowledges construction, in the work and by the work. Those processes develop in exchange experiences net in a friendly economic environment and raise elements of a work culture personal that work there. The embroidereses learn how to embroid doing the job and this learning, a lot of times, is influenced by the life conditions, residence local and infantile work in the country area and the living to the urban area, particularly to Caicó. The knowledge relation between them is the matter fact in the embroider learning process that means a social relation based on the knowledge differences between their position in its structure involving the work division, that each handcraft maker knows every part of the embroider, type of work or machine type, step by step until the work is done. It involves decision, execution and machine movements repetition, the focus are the categories that fit in current flexible financial issue. They schedule the work at home so they have time to do other stuff. Most part of the production currently is done to obey de a certain request that aims as production target, being a homework. Another important issue is the embroider work time: time and experience that is within in the professional life and its knowledge representation of job/profession. This time is got as a acquisition process of certain a work dominion and self knowing; time added to changes that were being there practicing from the new characteristics in the furniture, clothes and towels that are in the introduction communicative and its effect. In this way this work include articulations process among skills, educative process and handcraft work organization that allowed the interpretation and finish, that are related to the case study and its developments: handcraft embroidered considered as a profession, money source not conventional where is not work available and a temporary activity while studyng, homework and flexible work

Thermal properties of nylon6/ABS polymer blends: Compatibilizer effect

Nylon6/ABS binary blends are incompatible and need to be compatibilized to achieve better performance under impact tests. Poly(methyl methacrylate/maleic anhydride) (MMA-MA) is used in this work to compatibilize in situ nylon6/ABS immiscible blends. The MA functional groups, from MMA-MA copolymers, react with NH2 groups giving as products nylon molecules grafted to MMA-MA molecules. Those molecular species locate in the nylon6/ABS blend interfacial region increasing the local adhesion. MMA-MA segments are completely miscible with the SAN rich phase from the ABS. The aim of this work is to study the effects of ABS and compatibilizing agent on the melting and crystallization of nylon6/ABS blends. This effect has been investigated by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). Incorporation of this compatibilizer and ABS showed little effect on the melting behavior of the PA6 crystalline phase, in general. DMTA analysis confirmed the system immiscibility and showed evidence of compatibility between the two phases, nylon6 and ABS, produced by MMA-MA copolymer presence. The nylon6/ABS blend morphology, observed by transmission electron microscopy (TEM), changes significantly by the addition of the MMA-MA compatibilizer. A better dispersion of ABS in the nylon6 phase is observed. © 2004 Kluwer Academic Publishers.

Morphological, mechanical and thermal properties of nylon 6/ABS blends using glycidyl methacrylate-methyl methacrylate copolymers

Nylon6 is an attractive polymer for engineering applications because it has reactive functionality through amine and carboxyl end groups that are capable of reacting. For this reason, it has been used a lot in polymeric blends. Blends of nylon6/ABS (acrylonitrile-butadiene-styrene) were produced using glycidyl methacrylate-methyl methacrylate (GMA-MMA) copolymers as compatibilizer. The binary blends were immiscible and exhibited poor mechanical properties that stemmed from the unfavorable interactions among their molecular segments. This produced an unstable coarse phase morphology and weak interfaces between the phases in the solid state. The presence of the copolymer in the blends clearly led to a more efficient dispersion of the ABS phase and consequently optimized Izod impact properties. However, the compatibilized blend showed poor toughness at room temperature and failed in a brittle manner at subambient temperatures. © 2005 Springer Science + Business Media, Inc.

Die Bedeutung des § 2 Abs. 1 BetrVG für den Umfang und die Schranken der Mitbestimmung nach § 87 BetrVG

Die vorliegende Arbeit befasst sich mit der Bedeutung des § 2 Abs. 1 BetrVG für die Reichweite und die Grenzen der Mitbestimmung des Betriebsrates nach § 87 BetrVG.. Ebenso wie im BetrVG 1952 bildet auch im BetrVG 1972 und im BetrVG 2001 der vierte Teil mit den Regelungen über die Mitwirkung und Mitbestimmung der Arbeitnehmer das eigentliche Kernstück des Gesetzes. Zentralvorschrift für die Mitbestimmung des Betriebsrats in sozialen Angelegenheiten ist dabei § 87 BetrVG. Diese Regelung umfasst alle Arbeitsbedingungen, die nicht schon gesetzlich oder tariflich geregelt sind, anderseits aber oft nur einheitlich für alle Arbeitnehmer im Betrieb geregelt werden können. Soweit die Tatbestandsvoraussetzungen der einzelnen Gegenstände in § 87 Abs. 1 Nr. 1 bis Nr. 13 BetrVG erfüllt sind, hat der Betriebsrat eine umfassende funktionelle Zuständigkeit zur Mitbestimmung in sämtlichen sozialen Angelegenheiten. Aufgabe der vorliegenden Arbeit soll es daher sein, Rechtsnatur, Struktur und Anwendungsbereich des Gebots der vertrauensvollen Zusammenarbeit und der Mitbestimmungsrechte gem. § 87 BetrVG zu klären. Hier ist insbesondere zu erörtern, ob Mitbestimmungsrechte des Betriebsrats gem. § 87 Abs. 1 BetrVG außerhalb des Katalogs der gesetzlichen Vorschriften aus dem Grundsatz der vertrauensvollen Zusammenarbeit herzuleiten sind. Ein weiterer Schwerpunkt liegt in der Herausarbeitung der Korrektur- und Schrankenfunktion des § 2 Abs. 1 BetrVG im Bereich der Mitbestimmung nach § 87 Abs. 1 BetrVG.

Abgrenzung der verschiedenen Schadensersatzansprüche nach §§ 280 ff., 311a Abs. 2 BGB

Die Schuldrechtsreform 2002 hat die Schadensersatzregelungen im Leistungsstörungsrecht grundlegend geändert. Es stellt sich die Frage, wie die verschiedene Schadensersatzansprüche nach §§ 280 ff., 311a Abs. 2 BGB voneinander richtig abgegrenzt werden sollen. Trotz intensiver Beschäftigung der Rechtsprechung und Literatur besteht bis heute keine übereinstimmende Antwort. In der Arbeit wird versucht, diese Frage anhand der Systematik der Schadensersatzregelungen zu lösen. Der Systematik entsprechend wird zunächst untersucht, wodurch sich die Schadensersatzansprüche auf der Rechtsfolgeseite unterscheiden. Anschließend wird auf die Abgrenzung auf der Tatbestandseite eingegangen, wobei die Pflichtverletzung und der Bezugspunkt des Vertretenmüssens der einzelnen Schadensersatzansprüche dargestellt und verglichen werden sollen. Schließlich wird unter Anwendung dieser zweistufigen Abgrenzung versucht, die typischen mangelbedingten Schadenspositionen im kaufrechtlichen Gewährleistungsrecht richtig einzuordnen.

Anisotropic Mechanical Properties of ABS Parts Fabricated by Fused Deposition Modelling

In recent years, layered manufacturing (LM) processes have begun to progress from rapid prototyping techniques towards rapid manufacturing methods, where the objective is now to produce finished components for potential end use in a product (Caulfield et al., 2007). LM is especially promising for the fabrication of specific need, low volume products such as replacement parts for larger systems. This trend accentuates the need for a thorough understanding of the associated mechanical properties and the resulting behavior of parts produced by layered methods. Not only must the base material be durable, but the mechanical properties of the layered components must be sufficient to meet in-service loading and operational requirements, and be reasonably comparable to parts produced by more traditional manufacturing techniques. This chapter presents the details of a study completed to quantitatively analyze the potential of fused deposition modelling to fully evolve into a rapid manufacturing tool. The project objective is to develop an understanding of the dependence of the mechanical properties of FDM parts on raster orientation and to assess whether these parts are capable of maintaining their integrity while under service loading. The study examines the effect of fiber orientation, i.e. the direction of the polymer beads relative to the loading direction of the part, on a variety of important mechanical properties of ABS components fabricated by fused deposition modeling. Tensile, compressive, flexural, impact, and fatigue strength properties of FDM specimens are examined, evaluated, and placed in context in comparison with the properties of injection molded ABS parts.