ILR Impact Brief - Phased Retirement: Opportunities for Some but Not for All

Nearly three-quarters of employers surveyed indicate that some form of phased retirement could be worked out for white-collar employees aged 55 and older. Workers’ willingness to take advantage of this option, however, may diminish when employers\u27 terms and conditions are factored in. In other words, the majority of white-collar workers are presented with constrained opportunities for phased retirement when the possibility arises

Government Transfer Payments and Strike Activity: Reforming Public Policy

[Excerpt] One of the most controversial labor policy issues is whether strikers should be eligible for government transfer payments, such as unemployment compensation, public assistance, and food stamps. The controversy often focuses on whether payment of such benefits to strikers increases the magnitude of strike activity. In this article, we argue that that is the wrong focus. The key issue is not whether strikers receive benefits, but who finances them. We contend that to the extent that the benefits are financed by the parties to the conflict (the employer and union), the transfers will not affect strike activity. This article extends our recent book on this topic, by briefly describing current and past policies, summarizing our argument for why financing is key, and presenting a proposal for reforming strike-related government transfers

"A Path to Good Jobs? Unemployment and Low Wages: The Distribution of Opportunity for Young Unskilled Workers"

Hutchens examines three paths by which a young person with limited academic credentials may avoid a life of unemployment and low wages: obtaining additional formal schooling, securing a job that provides secure employment at "good" wages, or acquiring a job that provides skills and thereby opens a door to good future jobs. He finds that the policy most likely to reduce the supply of unskilled labor would include enhancing early childhood education programs, disbursing training vouchers to young adults, and restricting the immigration of unskilled workers. Owing to the difficulty of identifying jobs, occupations, and industries that would consistently result in financial security for those with limited academic skills, Hutchens concludes that, with few exceptions, demand-side interventions will not work.

Unemployment Insurance and Strikes

In several states workers who are unemployed because of a labor dispute can collect unemployment benefits. Due to imperfect experience rating, such policies can create a public subsidy to strikes. This study examines whether these policies affect strike activity. In particular, both cross-sectional and fixed effects models are employed to test whether an increase in the public subsidy inherent in unemployment insurance leads to an increase in strike frequency

Strikers and Subsidies: The Influence of Government Transfer Programs on Strike Activity

The authors assess laws governing striker eligibility for government transfers, finding evidence linking UI payments to strike activity.https://research.upjohn.org/up_press/1106/thumbnail.jp

Setting the Stage

The authors assess laws governing striker eligibility for government transfers, finding evidence linking UI payments to strike activity.https://research.upjohn.org/up_press/1106/thumbnail.jp

Low-Temperature Polymorphic Phase Transition in a Crystalline Tripeptide L-Ala-L-Pro-Gly·H2O Revealed by Adiabatic Calorimetry

We demonstrate application of precise adiabatic vacuum calorimetry to observation of phase transition in the tripeptide l-alanyl-l-prolyl-glycine monohydrate (APG) from 6 to 320 K and report the standard thermodynamic properties of the tripeptide in the entire range. Thus, the heat capacity of APG was measured by adiabatic vacuum calorimetry in the above temperature range. The tripeptide exhibits a reversible first-order solid-to-solid phase transition characterized by strong thermal hysteresis. We report the standard thermodynamic characteristics of this transition and show that differential scanning calorimetry can reliably characterize the observed phase transition with <5 mg of the sample. Additionally, the standard entropy of formation from the elemental substances and the standard entropy of hypothetical reaction of synthesis from the amino acids at 298.15 K were calculated for the studied tripeptide.National Institute of Biomedical Imaging and Bioengineering (U.S.) (EB-003151)National Institute of Biomedical Imaging and Bioengineering (U.S.) (EB-001960)National Institute of Biomedical Imaging and Bioengineering (U.S.) (EB-002026

Bacterial dissolution of fluorapatite as a possible source of elevated dissolved phosphate in the environment

In order to understand the contribution of geogenic phosphorus to lake eutrophication, we have investigated the rate and extent of fluorapatite dissolution in the presence of two common soil bacteria (Pantoea agglomerans and Bacillus megaterium) at T = 25 °C for 26 days. The release of calcium (Ca), phosphorus (P), and rare earth elements (REE) under biotic and abiotic conditions was compared to investigate the effect of microorganism on apatite dissolution. The release of Ca and P was enhanced under the influence of bacteria. Apatite dissolution rates obtained from solution Ca concentration in the biotic reactors increased above error compared with abiotic controls. Chemical analysis of biomass showed that bacteria scavenged Ca, P, and REE during their growth, which lowered their fluid concentrations, leading to apparent lower release rates. The temporal evolution of pH in the reactors reflected the balance of apatite weathering, solution reactions, bacterial metabolism, and potentially secondary precipitation, which was implied in the variety of REE patterns in the biotic and abiotic reactors. Light rare earth elements (LREE) were preferentially adsorbed to cell surfaces, whereas heavy rare earth elements (HREE) were retained in the fluid phase. Decoupling of LREE and HREE could possibly be due to preferential release of HREE from apatite or selective secondary precipitation of LREE enriched phosphates, especially in the presence of bacteria. When corrected for intracellular concentrations, both biotic reactors showed high P and REE release compared with the abiotic control. We speculate that lack of this correction explains the conflicting findings about the role of bacteria in mineral weathering rates. The observation that bacteria enhance the release rate of P and REE from apatite could account for some of the phosphorus burden and metal pollution in aquatic environments

Studies in RF power communication, SAR, and temperature elevation in wireless implantable neural interfaces

Implantable neural interfaces are designed to provide a high spatial and temporal precision control signal implementing high degree of freedom real-time prosthetic systems. The development of a Radio Frequency (RF) wireless neural interface has the potential to expand the number of applications as well as extend the robustness and longevity compared to wired neural interfaces. However, it is well known that RF signal is absorbed by the body and can result in tissue heating. In this work, numerical studies with analytical validations are performed to provide an assessment of power, heating and specific absorption rate (SAR) associated with the wireless RF transmitting within the human head. The receiving antenna on the neural interface is designed with different geometries and modeled at a range of implanted depths within the brain in order to estimate the maximum receiving power without violating SAR and tissue temperature elevation safety regulations. Based on the size of the designed antenna, sets of frequencies between 1 GHz to 4 GHz have been investigated. As expected the simulations demonstrate that longer receiving antennas (dipole) and lower working frequencies result in greater power availability prior to violating SAR regulations. For a 15 mm dipole antenna operating at 1.24 GHz on the surface of the brain, 730 uW of power could be harvested at the Federal Communications Commission (FCC) SAR violation limit. At approximately 5 cm inside the head, this same antenna would receive 190 uW of power prior to violating SAR regulations. Finally, the 3-D bio-heat simulation results show that for all evaluated antennas and frequency combinations we reach FCC SAR limits well before 1 °C. It is clear that powering neural interfaces via RF is possible, but ultra-low power circuit designs combined with advanced simulation will be required to develop a functional antenna that meets all system requirements. © 2013 Zhao et al