Normalization of Gravitational Acceleration Models

Unlike the uniform density spherical shell approximations of Newton, the con- sequence of spaceflight in the real universe is that gravitational fields are sensitive to the nonsphericity of their generating central bodies. The gravitational potential of a nonspherical central body is typically resolved using spherical harmonic approximations. However, attempting to directly calculate the spherical harmonic approximations results in at least two singularities which must be removed in order to generalize the method and solve for any possible orbit, including polar orbits. Three unique algorithms have been developed to eliminate these singularities by Samuel Pines [1], Bill Lear [2], and Robert Gottlieb [3]. This paper documents the methodical normalization of two1 of the three known formulations for singularity-free gravitational acceleration (namely, the Lear [2] and Gottlieb [3] algorithms) and formulates a general method for defining normalization parameters used to generate normalized Legendre Polynomials and ALFs for any algorithm. A treatment of the conventional formulation of the gravitational potential and acceleration is also provided, in addition to a brief overview of the philosophical differences between the three known singularity-free algorithms

Pathways to Retention: Job Satisfaction, Burnout, & Organizational Commitment Among Social Workers

Purpose: Job satisfaction, burnout, and organizational commitment remain concerns for human service organizations. Few studies have utilized a large sample of social workers to investigate these factors while also considering practice setting. In the present study, work-related burnout, satisfaction with workload, and satisfaction with organizational environment are examined as factors contributing to organizational commitment while comparing the measurement and predictive strength of these factors based on practice setting. Method: Confirmatory factor analyses and structural equation modeling were used to estimate and compare factors related to organizational commitment with a sample of 1,786 social workers practicing in the United States. Results: Satisfaction with organizational environment showed a strong positive relationship with organizational commitment. Work-related burnout was confirmed to have a negative relationship with organizational commitment. No measurement or structural model differences existed between social workers from different types of practice settings. Discussion: Findings suggest that increasing satisfaction with organizational environment is a better target for retaining employees than reducing workloads. Results emphasize the need for human service organizations to foster work environments which provide a climate of wellness, support, and recognition of employees\u27 contributions at work

Use of the Copenhagen Burnout Inventory with Social Workers: A Confirmatory Factor Analysis

Burnout among social workers continues to be a relevant issue as it can lead to major problems: personal health issues, service deterioration, and turnover. This study examined the use of the Copenhagen Burnout Inventory with U.S. social workers (N = 1774) in direct-service and non-direct-service roles. The CBI is a no-cost alternative to the commonly employed Maslach Burnout Inventory. Results revealed that the CBI is a suitable tool to measure burnout among social workers regardless of position. Screening, identifying sources, and action planning to reduce burnout are critical steps for organizations to ensure a quality atmosphere for employees and clients

Over the Hills and Through the Hollers: How One Program is Assisting Residents of Appalachian with Opioid Use Recovery

Introduction: The consequences of increasing opioid misuse in the U.S. over the last two decades have been severe, contributing to hundreds of thousands of lives lost and heavy tolls on individuals, families, and society. The Appalachian Region has been hit particularly hard, with its predominantly rural landscape seeing disproportionate increases in opioid misuse and overdoses. These cases have been difficult to address due to poor treatment access and capacity constraints in many areas of Appalachia. Purpose: The current study focuses on evaluating The Kentucky Access to Recovery Program (KATR), which provides services to individuals recovering from opioid addiction residing in several counties in Eastern Kentucky. Its purpose is to understand the impact of KATR on service recipients’ access to recovery services and supports. Methods: Semi-structured interviews were conducted with 12 service recipients, three service providers, and four vendors of support services related to housing, transportation, medical/dental care, employment, and childcare. Qualitative data were analyzed using thematic analysis. Results: Themes related to individual-level impacts were identified and discussed, including behavioral changes related to recovery, physical and mental health improvements, relationship repair, regaining custody of children, provision of needed supports, and ability to gain employment and improve finances. Study findings showed that KATR had meaningful impacts on the lives of service recipients by helping meet needs and reducing barriers to their ongoing recovery. Implications: Through its use of vouchers for support services and basic-needs provision, KATR demonstrates a potentially effective strategy for increasing access to health-related social services for persons in recovery in predominantly rural areas

Work Experiences of Rural Social Workers in the United States

Rural social workers face unique challenges and opportunities as they seek to address the needs of rural Americans. Using social media, rural social workers in the U.S. were recruited to describe their characteristics and explore factors related to their job satisfaction, burnout, and organizational commitment. Analyses included univariate descriptive statistics, bivariate correlations, and multiple regression. The sample (N = 192) represented 146 counties in 36 states. Participants tended to be White, female, MSW-degreed direct-service providers. Participants were moderately satisfied with their organizational environments and workloads. Age, being Black, and working in settings other than child welfare were most strongly related to satisfaction with workload. Personal burnout scores were highest followed by work-related and client-related burnout. Age and not working in child welfare were most strongly related to lower burnout scores. Being Black and having more tenure in one’s current job were associated with less client-related burnout. Participants indicated moderate levels of commitment to their organizations, with higher salaries and more tenure being the most strongly associated factors. Future research is necessary to examine more closely the work experiences of rural social workers who are younger, identify as racial or ethnic minorities, and employed in child welfare settings

Association of HPV types 6, 11, 16, and 18 DNA detection and serological response in unvaccinated adolescent women

Antibodies directed against the human papillomavirus (HPV) L1 protein are detected in approximately 70% of individuals with HPV infections. The factors associated with a serological response are not characterized. It is hypothesized that the HPV viral load, duration of detection, or both would be associated with seropositivity in adolescent women. Adolescent women (n = 117), ages 15-17 at enrolment were followed for a mean of 6.2 years. Quarterly vaginal swabs (mean 22 per participant) were used to identify HPV 6, 11, 16, or 18 DNA (Roche PCR/Linear Array). Type-specific HPV infection was defined as ≥2 positive assays. To approximate viral load, Roche PCR/Linear Array test strips were scored visually based on the strength of signal relative to beta-globin controls. Sera collected near the end of study were tested by cLIA. Regression models were fit to assess associations between strength of signal (as represented by mean and cumulative strength of signal), duration of HPV detection, seropositivity, and serotiter. Detection of HPV DNA was associated with seropositivity for four types combined and for types 6, 16, and 18. Overall, 70.1% of DNA positive episodes were associated with type-specific seropositivity. The cumulative HPV DNA signal strength during periods of HPV detection for types 6, 11, 16, and 18 combined was associated with seropositivity (OR = 1.21, 95% CI 1.02-1.44 P = 0.026). No other HPV DNA predictors were found to be associated with seropositivity or serotiter

Rural Social Work: Recruitment, Job Satisfaction, Burnout, and Turnover

Rural agencies have unique challenges related to recruitment and retention of social workers. A systematic literature review was conducted to examine job satisfaction, burnout and turnover among rural social workers. Based on 28 included articles, results indicate: (a) rural social workers tend to be from rural areas or have completed training in rural settings; (b) poor job satisfaction predicts turnover among rural social workers; (c) rural vs. urban differences for satisfaction, burnout, intention to leave, and turnover are mixed; and (d) greater work-life balance and supervisory support increase retention among rural social workers. This study provides recommendations for informing education, policy and future research in social work practice in rural locations in the United States

Testing the transferability of a coarse-grained model to intrinsically disordered proteins

The intermediate-resolution coarse-grained protein model PLUM [T. Bereau and M. Deserno, J. Chem. Phys., 2009, 130, 235106] is used to simulate small systems of intrinsically disordered proteins involved in biomineralisation. With minor adjustments to reduce bias toward stable secondary structure, the model generates conformational ensembles conforming to structural predictions from atomistic simulation. Without additional structural information as input, the model distinguishes regions of the chain by predicted degree of disorder, manifestation of structure, and involvement in chain dimerisation. The model is also able to distinguish dimerisation behaviour between one intrinsically disordered peptide and a closely related mutant. We contrast this against the poor ability of PLUM to model the S1 quartz-binding peptide