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Independently of Krebs and Pelissero, the authors have studied Chicago election campaign contributions and city council voting. Their findings confirm the differences between the political regimes of Mayors Harold Washington and Richard M. Daley. The authors go further to explore the implication of these empirical findings for what they call the "new Chicago machine."

Prior to January 1, 1997, individuals with drug- or alcohol-related disabilities could qualify for federal public assistance through the Supplemental Security Income (SSI) program. During the welfare reforms of the Clinton administration, this policy was changed resulting in lost income and health care benefits for many low-income substance abusers. This paper examines the historical underpinnings to the elimination of drug addiction and alcoholism (DA&A) as qualifying impairments for SSI disability payments. Following this, empirical evidence is presented on the effect this policy change had on the subsequent economic security of former SSI DA&A beneficiaries. Findings indicate that study participants that lost SSI benefits suffered increased economic hardship following the policy change. These findings have important implications for future social welfare policymaking decisions.

Abstract

Objective
Urea is one of the most widely used commercial fertilisers worldwide due to its high N density and cost effectiveness. However, it can be lost in the form of gaseous ammonia and other greenhouse gas (GHG) emissions which can potentially lead to environmental pollution. Farmers are compelled to apply more urea to account for those losses, thereby increasing their expenditure on fertilization. The objective of this paper is to present a literature review on current knowledge regarding inhibitor technologies such as urease inhibitor; n-(N-butyl) thiophosphoric triamide (NBPT), and nitrification inhibitor; dicyandiamide (DCD).


Methods
A thorough review of all the scientific literature was carried out and a proposed risk assessment framework developed.


Results
The study showed that the urease inhibitor NBPT significantly reduced NH3 loss from urea. However, concerns about NBPT safety to human health had been raised when the nitrification inhibitor DCD appeared as a residue in milk. This article presents a risk assessment framework for evaluating human exposure to chemicals like NBPT or DCD, following the consumption of foods of animal origin (e.g. milk) from cows grazing on inhibitor-treated pasture.


Conclusion
The EU's target of a 40% reduction of greenhouse gas emissions by 2030 can be aided by using NBPT as part of an overall suite of solutions. A comprehensive risk assessment is advised for effective evaluation of potential risks from exposure to these inhibitors.

AbstractTo design effective provaccination messaging, it is important to know "where people are coming from"—the personal experiences and long-standing values, motives, lifestyles, preferences, emotional tendencies, and information-processing capacities of people who end up resistant or hesitant toward vaccination. We used prospective data from a 5-decade cohort study, spanning childhood to midlife, to construct comprehensive early-life psychological histories of groups who differed in their vaccine intentions in months just before COVID vaccines became available in their country. Vaccine-resistant and vaccine-hesitant participants had histories of adverse childhood experiences that foster mistrust, longstanding mental-health problems that foster misinterpretation of messaging, and early-emerging personality traits including tendencies toward extreme negative emotions, shutting down mentally under stress, nonconformism, and fatalism about health. Many vaccine-resistant and -hesitant participants had cognitive difficulties in comprehending health information. Findings held after control for socioeconomic origins. Vaccine intentions are not short-term isolated misunderstandings. They are part of a person's style of interpreting information and making decisions that is laid down before secondary school age. Findings suggest ways to tailor vaccine messaging for hesitant and resistant groups. To prepare for future pandemics, education about viruses and vaccines before or during secondary schooling could reduce citizens' level of uncertainty during a pandemic, and provide people with pre-existing knowledge frameworks that prevent extreme emotional distress reactions and enhance receptivity to health messages. Enhanced medical technology and economic resilience are important for pandemic preparedness, but a prepared public who understands the need to mask, social distance, and vaccinate will also be important.