Freedom of Association and the Right to Contest: Getting Back to Basics
As worker participation through trade unions has declined across much of the developed world, especially in the US, the UK and Canada, scholars and activists have turned to the concept of "freedom of association" (FOA) -- defined in international labour law as the fundamental right of workers to form and join trade unions of their own choosing -- as a basis for reclaiming a voice for workers in economic governance. Much of this work pursues what we call a strategy of ascent: to what extent does the existing FOA as defined in international and national labour law encompass constitutionalised rights to collective bargaining and to strike, for example? This chapter adopts instead a strategy of descent: does FOA both rest on and help to support more basic rights of concerted protest in the workplace as a prelude to, or even a substitute for, trade union organisation? Drawing upon Philip Pettit's philosophical work on freedom as non-domination, the chapter contends for the recognition of an individual right to contest employer power, free from both state and employer interference. This fundamental labour right, coupled with an associational right or freedom to do jointly with others what one has the right or freedom to do as individuals, provides a normative foundation for protecting informal concerted activity as well as the more familiar trade union forms of FOA. This chapter maps the specific configuration of labour rights in Canada, the UK and the US from this perspective, and identifies some newly-apparent gaps in both the law and the scholarly literature regarding fundamental labour rights.
Labor Activism in Local Politics: From CBAS to ‘CBAS’
Activism by labor and community coalitions at the local level is redefining labor law in the United States. Despite a drastic decline in union density and power in the United States, labor and community alliances have emerged at the local level that seek to influence labor conditions outside of the traditional collective bargaining framework. Unions and their community allies in some cities have had success in securing living wages, job training, local hiring preferences, workplace safety protections, health insurance benefits, and even job security for local workers. These achievements have been built on a new legal foundation: local government law. Labor-community alliances have leveraged different facets of local government power – contracting, land use, and general regulatory power – to achieve labor objectives through local ordinances and negotiated community benefit agreements. This chapter describes some of the ways in which these new labor-community alliances have exercised power at the local level. It pays particular attention to Los Angeles where local labor activism has achieved a series of remarkable successes through the robust use of local governmental levers. The authors then address the question of whether, and to what extent, local labor initiatives can provide an adequate substitute for, or enhancement of, labor power at the national level.
MAS-NMR spectroscopy studies in the setting reaction of glass ionomer cements.
OBJECTIVES
The main objective is the characterisation of the setting reaction in glass ionomer cements based on experimental ionomer glasses with different fluorine content and a commercial glass ionomer cement liquid by using 13C CP/MAS-NMR, 29Si, 27Al and 31P MAS-NMR spectroscopy in order to receive information specifically about the cross-linking process.


METHODS
Different fluorine containing glass compositions based on 4.5SiO2-3Al2O3-1.5P2O5-(5-z)CaO-zCaF(2) where z=0-3, were mixed with a commercially available polymer liquid to form glass ionomer cements. The cements were subjected to 27Al, 13C CP/MAS, 29Si, and 31P MAS-NMR analysis.


RESULTS
The 27Al spectra showed clearly the formation of six-fold coordinate Al(VI), that may crosslink the carboxyl groups in the poly-acid molecules. A shift towards to more positive values of the carboxyl peak in the 13C CP/MAS-NMR spectra showed clearly the proton dissociation of the carboxyl groups. A shift towards more negative values was observed in the 29Si MAS-NMR spectra, suggesting formation of hydrated silica gel and consequently formation of additional Si-O-Si bonds. 31P MAS-NMR spectra also reflected changes in the coordination state around a PO4(3-) tetrahedron. Increasing the fluorine content of the glasses resulted generally in increased reactivity during setting, due to promoting cross-linking and repolymerisation of the silicate phase, followed by clear changes in the MAS-NMR spectra.


CONCLUSIONS
The cross-linking process during the setting reaction of glass ionomer cements can be followed by MAS-NMR spectroscopy observing the conversion of Al(IV) to Al(VI). The acid base setting reaction is completed in 1 day and no further significant changes in the MAS-NMR spectra can be observed. Further study is required in order to understand the role of phosphorus.