The President and Nuclear Weapons: Authorities, Limits, and Process

There is no more consequential decision for a president than ordering a nuclear strike. In the Cold War, the threat of sudden nuclear annihilation necessitated procedures emphasizing speed and efficiency and placing sole decision-making authority in the president’s hands. In today’s changed threat environment, the legal authorities and process a U.S. president would confront when making this grave decision merit reexamination. This paper serves as a resource in the national discussion about a president’s legal authority and the procedures for ordering a nuclear strike, and whether to update them

Earthworm abundances in endophyte-infected tall fescue pastures in Northwest Arkansas

The ecology of organisms that co-evolve within an ecosystem is likely to be distinct from that involving organisms recently introduced into an area. To better understand the relationship of earthworms with endophyte-infected tall fescue, earthworms in novel and toxic endophyte-infected tall fescue pastures were enumerated and identified as adults or juveniles. We hypothesized that differences in endophyte infection of the fescue would influence earthworm abundances. Earthworms in two toxic and two novel endophyte-infected tall fescue fields in Fayetteville, Ark., were sampled weekly from January through July 2007. Each type of endophyte-infected pasture was established in 1997 and 2003. Sampling was carried out utilizing a physical dig-and-sort extraction method. Although variable, sampling time was a significant factor in the number of adult and juvenile worms collected. Adult earthworm abundances showed a seasonal trend of declining numbers from winter to summer, while juvenile worms showed an increase from winter to summer. Previous studies have shown that endophyte infection of plants can impact soil organisms. In this study, type of fungal endophyte infection did not appear to impact earthworm abundances; therefore, use of novel endophyte-infected fescue in a pasture is not expected to have an impact on the ecology of earthworms

Migration of Millennials and Seniors in the Mountain West

This Fact Sheet examines trends in intraregional migration of millennials and seniors since the Great Recession, with a focus on the Mountain West. The data presented were originally published in a report by the Brookings Institution, titled “How migration of millennials and seniors has shifted since the Great Recession.

School Refusal Behavior: A Phenomenological Study of Latino/a Children\u27s Experiences

School refusal behavior (SRB) is a subset of absenteeism in which children either altogether refuse to attend school or experience great difficulty remaining in class for the duration of the school day. Child motivated SRB is a growing problem that now affects between 5% and 28% of children and adolescents at some point during their lives. The effects of SRB can extend well beyond the classroom. Long-term, SRB can lead to delinquency and psychiatric, occupational, and marital problems in adulthood. Additionally, children who consistently exhibit SRB are more likely to drop out of school, thereby limiting their career choices and their earning potential. Though there has been considerable research conducted with school refusing youth, studies examining the impact of environmental and contextual factors on SRB with Caucasian samples have been few and with Latino/a children have been nonexistent. Additionally, the research has shown that a significant number of school refusing youth do not meet criteria for a DSM-IV-TR diagnosis. Therefore, it is imperative that researchers begin to look to external variables to garner an understanding of the factors that create and maintain SRB. The purpose of this study was to gain a better understanding of the meaning and attributions children make of their school refusing behaviors. This study utilized a phenomenological design in which ten Latino/a children between the ages of 11 and 13 were interviewed on two separate occasions about their school refusal experiences. The students were asked open-ended questions about their relationships with peers, teachers, and family, as well as different facets of the school environment. All relevant statements from the interviews were categorized into themes in order to discover the essence of the experience. The interviews revealed each student faced multiple barriers to school attendance. In other words, their school refusal behaviors were impacted by many different factors. The co-researchers\u27 experiences were synthesized, and it was found that the most commonly endorsed factors concerned relationships, and their impact on SRB. Specifically, each child endorsed the quality of peer and teacher relationships as both being factors that heavily influenced his/her unwillingness to attend school. Other major themes that impacted the SRB of most participants were the way families viewed school attendance, children\u27s support systems, relationships with parents, their experience of their schoolwork, and parental involvement. These and other findings highlight the systemic implications that need to address these concerns in order to better serve school refusing youth

No. 26: Social Media, The Internet and Diasporas for Development

The recent focus on diasporas by policy-makers researchers has highlighted the rich potential of migrants as a force for shaping development activities in their countries of origin. The study of diasporas in development presents researchers a number of significant challenges. As Vertovec and Cohen suggest, ‘one of the major changes in migration patterns is the growth of populations anchored … neither at their places of origin nor at their places of destination’. The fluid, multi-sited and multi-generational nature of diaspora groupings poses considerable methodological challenges of definition, identification, location, sampling and interviewing. As the nature of African diasporas are constantly in flux so too should the methodologies we use to study them. In practice, traditional approaches lead to the same methodological roadblocks. Census and immigration data (particularly from destination countries) can provide an overall picture of diaspora stocks, flows and locations. However, privacy issues generally preclude these sources from providing disaggregated data at the level of the individual migrant or migrant household. Surveys of diaspora members have therefore become the standard means of collecting information on diaspora characteristics, identities, activities and linkages. This immediately raises a set of problems and challenges. Census data can tell us the size of the population to sample but not who the individuals are, where they live and how to contact them. Without a sampling frame, researchers tend to rely instead on ‘snowball’, ‘purposive’ or ‘convenience’ sampling. This has produced a disproportionate number of studies that rely on key informant and focus group interviews in order to create a profile of diasporas and their development-related activities. Diasporas are often geographically dispersed within a country and across different countries. Cost and time constraints and the bias of snowball and convenience sampling lead to a focus on sub-sets. Studies of diaspora members in particular cities or regions are especially common. While sample sizes vary considerably, there is a marked reliance on very small samples, which raises obvious questions about the representativeness and generalizability of the findings. The mail-out survey is still the preferred method of reaching members of a geographically dispersed diaspora, although response rates remain stubbornly low. To contact members of the diaspora, mailing lists are compiled from organizations that keep, and are willing to share, membership lists (such as diaspora organizations, embassies, alumni associations, immigrant service agencies and religious organizations). However, this means an inherent sampling bias since data collected from these individuals and groups has the potential to be skewed towards diaspora members actively engaged with their origin country. This method of ‘accessing the diaspora through the diaspora’ is also unlikely to provide much information on ‘hidden’ members of a diaspora whose immigration status may be undocumented or uncertain and who are wary of disclosing personal information directly to researchers. Researchers have also noted that members of vulnerable populations such as asylum seekers and refugees might be reluctant to provide personal information due to fear and trust issues. To identify and connect with larger numbers, different strategies need to be adopted. In this context, the potential of the internet has rarely been considered. Since the advent of the internet age, more than one billion people have become connected to the World Wide Web (WWW), creating seemingly limitless opportunities for communication. The past decade has also seen a major increase in the use of the internet by diaspora individuals and groupings. The internet has not only facilitated remittance transfers, but has increased communication among and between diasporas and influenced the formation of diasporic identities. In this context, the potential of web-based methodologies in diaspora research appears promising. The aim of this paper is twofold. First, we argue for supplementing conventional approaches with new methodologies that embrace the connectivity of diasporas, the emergence of social media and the potential of online surveys. Second, we illustrate the potential of this approach through discussion of the methods adopted in our current research on the African diaspora in Canada

Divided Diasporas: Southern Africans in Canada

The protracted economic and political crisis in Zimbabwe led directly to a major increase in mixed migration flows to South Africa. Migrants were drawn from every sector of society, all education and skill levels, equal numbers of both sexes, and all ages (including unaccompanied child migration). Many migrants claimed asylum in South Africa which gave them the right to work while they waited for a refugee hearing. Many others were arrested and deported back to Zimbabwe. Migrants who were unable to find employment in the formal economy turned to employment and self-employment in the informal economy. These migrant entrepreneurs used personal savings to establish small and micro enterprises in many urban areas. The businesses focused on retail trading, manufacturing and services and contributed to the South African economy in various ways, including providing employment for South Africans. Nationwide xenophobic violence in 2008 targeted all migrants, irrespective of origin and legal status. From 2008 onwards, violent attacks on migrant-owned informal businesses began to escalate. This culminated in a second round of nationwide xenophobic violence in early 2015 when migrant-owned businesses were targeted by mobs. Migrants send essential remittances to family in Zimbabwe and return migration is not a viable or long-term response until Zimbabwe’s economic crisis is resolved. As a result, informal migrant entrepreneurs have adapted to hostile business conditions by adopting a range of strategies to avoid and protect themselves and their businesses from xenophobia. Against this backdrop, this report first discusses the nature of the crisis in Zimbabwe and its connections with large-scale out-migration, particularly to South Africa. The South African response to crisis-driven migration is reviewed showing how the government shifted from a predominantly coercive and control-oriented policy towards a more realistic assessment of the need to accommodate migrants through an immigration amnesty and the right to work in the formal and informal sector. One of the major challenges facing migrants and all stakeholders in South Africa is xenophobic violence. Nationwide attacks on migrants and refugees in 2008 and 2015 have been interspersed with ongoing lower-level episodes of violence. These attacks have increasingly targeted migrants and refugees, including many Zimbabweans, seeking to make a living in the country’s urban informal economy. The research for this report focused on the business activities and responses to xenophobic violence of Zimbabweans in the informal economy. Amongst the key findings were the following: Between 20-30% of Zimbabwean migrants in South African cities are involved in the informal economy and the importance of informal sector employment to Zimbabweans has increased over time. Zimbabweans operating enterprises in the informal economy are predominantly young (50- 75% under the age of 35) and male (60-70%). Nearly two-thirds of the migrant entrepreneurs arrived in South Africa in the peak years of the Zimbabwean crisis between 2000 and 2010 (42%). Another 32% migrated after 2010. Less than 2% migrated to South Africa before the end of apartheid. Economic hardship, unemployment and political persecution are the main push drivers of migration to South Africa. Pull drivers include the assistance of relatives already in South Africa and the prospect of employment. The majority of the Zimbabwean migrant enterprises are in the retail, trade and wholesale sector, followed by services and manufacturing. Around three-quarters of the migrants relied on their personal savings to start their businesses and many worked in the formal economy first. Business expansion has occurred despite the prime obligation of the entrepreneurs to support family still in Zimbabwe. Instead of reinvesting all of the business profits into further expansion, a portion is therefore diverted into remittance channels. Over one-third remit funds at least once per month and only 12% never send remittances. A significant number of the entrepreneurs had been victims of or knew other who had been victims of crime such as looting and robbery, xenophobic abuse and police misconduct abuse. The report then presents the results of in-depth interviews with Zimbabwean business-owners who had experienced xenophobic violence in 2008 and 2015 or at other times. The narratives of the migrants provide insights into the unpredictable nature of the violence, their vulnerability to attack, the loss of business goods and property during mob violence and the need to restart from scratch, and the various strategies that they adopt to reduce risk. These strategies include operating in safer areas (not feasible for all), avoiding areas where corrupt police tend to operate, paying for protection and flight when xenophobic violence erupts. Return to Zimbabwe is not considered a viable option because of the economic conditions there. The interviews also provide insights into the migrants’ perceptions of government and stakeholder responses to the xenophobic violence. Almost without exception, the migrants felt that neither government (the Zimbabwean or South African) had done anything to protect or assist them during and after the violence. This perception of inaction also extended to international and non-governmental organisations. The migrants were particularly harsh in their comments about the police who were widely seen as either conniving in the violence or uninterested in protecting migrants. The perceptions of the migrants that nothing is done may simply be a function of who was interviewed and does not necessarily reflect the actual reality. The report therefore evaluates the response of the South African government to the ongoing crisis of xenophobia and concludes that some actions – such as sending in the army – are taken during episodes of nationwide violence but that ongoing daily and weekly attacks are generally ignored. There is a strong official line that these attacks are not motivated by xenophobia and. Indeed, that xenophobia does not even exist. This is clearly contradicted by the migrants who view the attacks as motivated by xenophobia. A second element of the official response is that the migrants are partially to blame for what happens to them as their business success builds resentment amongst South Africans. Government has yet to acknowledge that migrant-owned informal enterprises make a valuable contribution to the economy of the country, including through job creation for South Africans. The primary response to the violence of 2015 was the launching of a military-style Operation Fiela which was justified as a crime-fighting initiative but appears to have targeted migrant enterprises. The final sections of the report examine the responses and programmes of various non-governmental and international organisations to the crisis of xenophobia. During large-scale xenophobic violence there is considerable mobilisation of anti-xenophobia civil society organisations to offer protection and protest. Their effectiveness and impact tends to dissipate when the violence is more scattered and random. The South African Human Rights Commission (SAHRC) has played a major role in the past in holding government to account and articulating extensive recommendations for remedial action, most of which have not been taken up and many of which are still highly relevant. International organisations have tended to target integration and education programming at the community level but there has only been one systematic evaluation (of the UNHCR’s response) which was highly critical of the organisation. These organisations and other governments are considerably hamstrung by xenophobia denialism at the highest level because it means that government will avoid the kinds of partnership that are urgently needed to address this endemic crisis

Teaching visual literacies: The case of The Great American Dust Bowl

Teachers and students require a range of tools to engage with visual texts. Using The Great American Dust Bowlby Don Brown (2013) as an exemplar text, we outline four conceptions of visual literacy: rhetorical, instructional, industrial and visuo-spatial and discuss their use in our literacy education practice. In addition, we provide a brief model of a second text, The Arrival (Tan, 2013) and a list of suggested texts for students at different levels (elementary, middle, and high school). We argue that these tools have the potential to deepen conceptions of visual literacies and empower teachers and students to understand the many ways in which visual texts operate to send message and evoke response and engagement

Environmental isolate developing antibiotic resistance by complementation

Antibiotic resistance is a growing concern within the scientific community. With few new antibiotics being introduced and an increasing number of resistant microbes, routine bacterial infections are becoming more difficult to treat in clinics and hospitals. The purpose of this study is to compare the ability of two environmental isolates – Staphylococcus aureus (S. aureus) and Exiguobacterium undae (E. undae) to grow in solutions of increasing concentrations of tetracycline and ciprofloxacin. After the bacteria showed grow in the solutions, antibiotic susceptibility was tested by examining zones of inhibition on Trypticase Soy Agar (TSA) plates. Our results indicate both isolates were initially susceptible to each antibiotic. The isolates were grown individually and mixed to determine if the isolates could gain resistance to the antibiotics in either environment. Our results demonstrate that E. undae could grow and become resistant in mixed cultures when grown in the presence of S. aureus reflecting the ability of S. aureus to complement microbial growth. Along with the ability of S. aureus to complement the growth of E. undae, it was also able to develop resistance to both ciprofloxacin and tetracycline through repetitive exposure

Comparison of Recycling Outcomes in Three Types of Recycling Collection Units

Commercial institutions have many factors to consider when implementing an effective recycling program. This study examined the effectiveness of three different types of recycling bins on recycling accuracy by determining the percent weight of recyclable material placed in the recycling bins, comparing the percent weight of recyclable material by type of container used, and examining whether a change in signage increased recycling accuracy. Data were collected over 6 weeks totaling 30 days from 3 different recycling bin types at a Midwest university medical center. Five bin locations for each bin type were used. Bags from these bins were collected, sorted into recyclable and nonrecyclable material, and weighed. The percent recyclable material was calculated using these weights. Common contaminates found in the bins were napkins and paper towels, plastic food wrapping, plastic bags, and coffee cups. The results showed a significant difference in percent recyclable material between bin types and bin locations. Bin type 2 was found to have one bin location to be statistically different (p = 0.048), which may have been due to lack of a trash bin next to the recycling bin in that location. Bin type 3 had significantly lower percent recyclable material (p \u3c 0.001), which may have been due to lack of a trash bin next to the recycling bin and increased contamination due to the combination of commingled and paper into one bag. There was no significant change in percent recyclable material in recycling bins post signage change. These results suggest a signage change may not be an effective way, when used alone, to increase recycling compliance and accuracy. This study showed two or three-compartment bins located next to a trash bin may be the best bin type for recycling accuracy