Zatrudnienie w spółdzielni socjalnej

EMPLOYMENT IN A SOCIAL COOPERATIVEA social cooperative is a rather specific entity operating on the labour market. Its principal task is the social and professional reintegration of its members rather than gainful activity. The legislator has curtailed the group of people who can be founders and later members of the cooperative. At the same time, members must remain legally bound to the cooperative. The preferred basis for employment is a cooperative contract of employment, but it is permissible to entrust work on the basis of a civil-law contract under certain conditions. This raises the problem of the actual possibility of achieving the objectives of a social cooperative and the composition of its bodies in respect of activities performed under the labour law. The issues indicated above encourage reflection on employment in a social cooperative.

Decoherence and pointer states in small antiferromagnets: A benchmark test

We study the decoherence process of a four spin-1/2 antiferromagnet that is coupled to an environment of spin-1/2 particles. The preferred basis of the antiferromagnet is discussed in two limiting cases and we identify two exact pointer states. Decoherence near the two limits is examined whereby entropy is used to quantify the robustness of states against environmental coupling. We find that close to the quantum measurement limit, the self-Hamiltonian of the system of interest can become dynamically relevant on macroscopic timescales. We illustrate this point by explicitly constructing a state that is more robust than (generic) states diagonal in the system-environment interaction Hamiltonian.

Combinatorial properties of generalized M-matrices

An M_∨-matrix has the form A = sI − B with s ≥ ρ(B) and B^k is entrywise nonnegative for all sufficiently large integers k. In this paper, the existence of a preferred basis for a singular M_∨- matrix A = sI − B with index(B) ≤ 1 is proven. Some equivalent conditions for the equality of the height and level characteristics of A are studied. The well structured property of the reduced graph of A is discussed. Also the possibility of the existence of preferred basis for another generalization of M-matrices, known as GM-matrices, is studied.

NEW BASES FOR A GENERAL DEFINITION FOR THE MOVING PREFERRED BASIS

One of the challenges of the Environment-Induced Decoherence (EID) approach is to provide a simple general definition of the moving pointer basis or moving preferred basis. In this paper we prove that the study of the poles that produce the decaying modes in non-unitary evolution, could yield a general definition of the relaxation, the decoherence times, and the moving preferred basis. These are probably the most important concepts in the theory of decoherence, one of the most relevant chapters of theoretical (and also practical) quantum mechanics. As an example we solved the Omnès (or Lee–Friedrich) model using our theory.

Sex and the Aesthetics of Existence

Leo Bersani's contributions to Queer Theory have been essentially traumatic. Ever since “Is the Rectum a Grave?,” with its startling opening sentence (“There is a big secret about sex: most people don't like it” [197]), Bersani's writing on sexuality has disrupted the conceptual coordinates of queer theory, a field that officially welcomes the disruptive. What has made Bersani hard to assimilate is less his psychoanalytic emphasis on the ineluctable masochism of sexuality (a principal reason for the aversion to sex) than his insistent conceptualization of sexuality in aesthetic terms. Although his work has never shied from the rebarbative aspects of erotic life, it is, in fact, Bersani's speculations about relationality as irreducibly aesthetic that have proved tougher for the field of queer theory to countenance. (Queer theorists take sexual variance in stride; we have a harder time dealing with art.) It is not merely that Bersani draws examples from literature, painting, sculpture, and cinema when discussing erotic relationality. More fundamentally, his earlier work claimed that art has effects on the human subject akin to those of sexuality, while his later writing proposes a specifically aesthetic subjectivity—rather than the sexual kind—as the preferred basis for relating to the world beyond the self.