Income taxes, subsidies to education, and investments in human capital

We study a two-sector economy with investments in human and physical capital and imperfect labor markets. Human and physical capital are heterogeneous. Workers and firms endogenously select the sector they are active in, and choose the amount of their sector-specific investments in human and physical capital. To enter the high-skill sector, workers must pay a fixed cost that we interpret as direct cost of education. Given the distribution of the agents across sectors, at equilibrium, in each sector there is underinvestment in both human and physical capital, due to non-contractibility of investments. A second source of inefficiency is related to the self-selection of the agents into the two sectors. It typically induces too many workers to invest in education. Under suitable restrictions on the parameters, the joint effect of the two distortions is that equilibria are characterized by too many people investing too little effort in the high skill sector. We also analyze the welfare properties of equilibria and study the effects of several tax-subsidy policies on the total expected surplus.

Investments in education and welfare in a two-sector, random matching economy

We consider a random matching model where heterogeneous agents choose optimally to invest time and real resources in education. Generically, there is a steady state equilibrium, where some agents, but not all of them, invest. Regular steady state equilibria are constrained inefficient in a strong sense. The Hosios (1990) condition is neither necessary, nor sufficient, for constrained efficiency. We also provide restrictions on the fundamentals sufficient to guarantee that equilibria are characterized by overeducation (or undereducation), present some results on their comparative statics properties, and discuss the nature of welfare improving policies.

The impact of green human resource management on organizational citizenship behaviors: the mediating role of organizational identification and job satisfaction

The main aim of this study is to analyze the impact of green human resource management on organizational citizenship behavior through the mediating role of organizational identification and job satisfaction in Portuguese companies certified by ISO 14001. A survey was applied to a sample of 120 collaborators who work in ISO 14001 certified Portuguese industrial companies. Results indicate that there is a mediation model, which uses the effect of job satisfaction in the relationship between green human resource management and its impact on organizational citizenship behavior. This study proves to be important when understanding the individual effects caused by a green human resource management system

Symmetry breaking in a constrained cheeger type isoperimetric inequality

The study of the optimal constant Kq(Ω) in the Sobolev inequality ∥u∥Lq(Ω) ≤ 1/Kq(Ω)∥Du∥(double-struck Rn), 1 ≤ q < 1∗, for BV functions which are zero outside Ω and with zero mean value inside Ω, leads to the definition of a Cheeger type constant. We are interested in finding the best possible embedding constant in terms of the measure of Ω alone. We set up an optimal shape problem and we completely characterize, on varying the exponent q, the behaviour of optimal domains. Among other things we establish the existence of a threshold value 1 ≤ q < 1∗ above which the symmetry of optimal domains is broken. Several differences between the cases n = 2 and n ≥ 3 are emphasized

Accountability and music: accounting, emotions and responses to the 1913 concert for Giuseppe Verdi

Purpose: This study aims to explore the engagement between accounting and music in the social and relational construction of accountability. The authors conceive this construction as a dynamic and recursive interplay between the giving of different accounts and the responses that these accounts provoke. The authors investigate the emotional dimension of this interplay, as it is also triggered by music, feeding back into how accountability is constructed and evolves over time. Design/methodology/approach: This study relies upon a historical analysis of archival and secondary sources about the main music concert organized in 1913 by the founder of “Accademia Chigiana”, one of the leading music academies in Italy. The concert celebrated the first centenary of the birth of Giuseppe Verdi, a worldwide famous Italian music composer, and icon of Italian national sentiment. Findings: This study shows that music and accounting were profoundly intertwined in the social and relational construction of accountability for the 1913 concert. Accountability evolved through different accounts, also linked to music, and the complex emotional reactions these accounts provoked in the audiences, citizens, media and institutions, leading to always further responses and accounts in the ongoing construction of accountability. Originality/value: This study extends prior literature on the chameleonic nature of accountability, as well as on its relational and emotional dimensions. The study shows that accountability is relationally constructed and evolves over time through the giving of accounts and the emotional reaction they provoke from others, feeding into further responses and accounts of the accountable subject. The authors show how the chameleonic nature of accountability permeates not only the accounts and the relations of accountability but also the subjects giving and demanding the accounts: these subjects change as chameleons through their interactions and emotions, feeding into the dynamic construction of accountability. The authors also show how arts, like music, can participate in the chameleonic nature of accountability and of its subjects, precisely by engaging with their emotional reactions and responses

Electrical Conductivity of o-, m-, and p-Terphenyls

Many investigations have been carried out on the electrical properties of p-terphenyl1-9, and, as far as we know, only one on m-terphenyl10. In the present work, the d. c. electrical conductivities of the three isomeric terphenyls are compared to establish the influence of the molecular structure on the electrical properties and to explain the mechanism of the energy transport in organic molecules

Century-scale paleoclimatic reconstruction from Moon Lake, a closed-basin lake in the northern Great Plains

Estimates of past lake-water salinity from fossil diatom assemblages were used to infer past climatic conditions at Moon Lake, a climatically sensitive site in the northern Great Plains. A good correspondence between diatom-inferred salinity and historical records of mean annual precipitation minus evapotranspiration (P - ET) strongly suggests that the sedimentary record from Moon Lake can be used to reconstruct past climatic conditions. Century-scale analysis of the Holocene diatom record indicates four major hydrological periods: an early Holocene transition from an open freshwater system to a closed saline system by 7300 B.P., which corresponds with a transition from spruce forest to deciduous parkland to prairie and indicates a major shift from wet to dry climate; a mid-Holocene period of high salinity from 7300 to 4700 B.P., indicating low effective moisture (P - ET); a transitional period of high salinity from 4700 to 2200 B.P., characterized by poor diatom preservation; and a late Holocene period of variable lower salinity during the past 2,200 yr, indicating fluctuations in effective moisture

Designing potentials by sculpturing wires

Magnetic trapping potentials for atoms on atom chips are determined by the current flow in the chip wires. By modifying the shape of the conductor we can realize specialized current flow patterns and therefore micro-design the trapping potentials. We have demonstrated this by nano-machining an atom chip using the focused ion beam technique. We built a trap, a barrier and using a BEC as a probe we showed that by polishing the conductor edge the potential roughness on the selected wire can be reduced. Furthermore we give different other designs and discuss the creation of a 1D magnetic lattice on an atom chip.Comment: 6 pages, 8 figure