Strange Quark Contribution to the Nucleon Spin from Electroweak Elastic Scattering Data

The total contribution of strange quarks to the intrinsic spin of the nucleon can be determined from a measurement of the strange-quark contribution to the nucleon's elastic axial form factor. We have studied the strangeness contribution to the elastic vector and axial form factors of the nucleon, using elastic electroweak scattering data. Specifically, we combine elastic $\nu p$ and $\bar{\nu} p$ scattering cross section data from the Brookhaven E734 experiment with elastic $ep$ and quasi-elastic $ed$ and $e$-$^4$He scattering parity-violating asymmetry data from the SAMPLE, HAPPEx, G0 and PVA4 experiments. We have not only determined these form factors at individual values of momentum-transfer ($Q^2$), but also have fit the $Q^2$-dependence of these form factors using simple functional forms. We present the results of these fits, along with some expectations of how our knowledge of these form factors can be improved with data from Fermilab experiments.Comment: 3 pages, 1 figure, CIPANP 201

Strangeness contribution to the vector and axial form factors of the nucleon

The strangeness contribution to the vector and axial form factors of the nucleon is presented for momentum transfers in the range $0.45<Q^2<1.0$ GeV$^2$. The results are obtained via a combined analysis of forward-scattering parity-violating elastic $\vec{e}p$ asymmetry data from the $G^0$ and HAPPEx experiments at Jefferson Lab, and elastic $\nu p$ and $\bar{\nu} p$ scattering data from Experiment 734 at Brookhaven National Laboratory. The parity-violating asymmetries measured in elastic $\vec{e}p$ scattering at forward angles establish a relationship between the strange vector form factors $G_E^s$ and $G_M^s$, with little sensitivity to the strange axial form factor $G_A^s$. On the other hand, elastic neutrino scattering at low $Q^2$ is dominated by the axial form factor, with still some significant sensitivity to the vector form factors as well. The combination of the two data sets allows the simultaneous extraction of $G_E^s$, $G_M^s$, and $G_A^s$ over a significant range of $Q^2$ for the very first time.Comment: 3 pages, 1 figure, will appear in AIP Conference Proceedings for PANIC 200

The Influence of Social Networking Sites on Buying Behaviors of Millennials

Social media sites have become an important part of many individuals’ lives. According to the Pew Research Center (2010), Millennials, also known as Gen Y, are living their lives on the internet where 75% of them have a profile on a social networking site. When compared with only 50% of Gen Xers and 30% of Boomers, this gives them the distinct identity that they are more technologically advanced

A Model for Developing Interdisciplinary Research Theoretical Frameworks

Embedded in interdisciplinary research, just as in disciplinary research, are statements of purpose, theoretical frameworks, research questions, reviews of literature, methodology, findings, recommendations, and more However, one of the least understood aspects of interdisciplinary research is the interdisciplinary research (IDR) theoretical framework. This article is intended to serve as a platform for dialogue within and across disciplines about interdisciplinary research and interdisciplinary theoretical frameworks. In addition, it provides a model for developing an IDR theoretical framework through an illustrative example of how an IDR theoretical framework was created and used within a dissertation study. We conclude the article noting critical elements about IDR and IDR theoretical frameworks for students and researchers to consider for enhancing their research

Black-White Differences in Married Female Labor Supply: Estimates from the Houghteling Data of 1925

This article examines differences in the labor force participation rates of black and white married women using a micro-level data set describing low-income Chicago families in 1925. The higher participation rate of black women in the sample is explained in part by higher annual earnings of white husbands and by significant racial differences in responses to family characteristics.Female; Labor Supply; Participation; Racial; Women

Undergraduate student mentoring: What do students think?

The purpose of this census study was to explore undergraduate student perceptions of mentoring in a College of Agriculture and Life Science (CALS). An analysis of the responses from 532 respondents found that students believe that faculty in CALS often practice the mentoring functions except for the direct assistance, which students believe sometimes occurs. Undergraduate students take a broad view of mentoring. They view it as an engaging and interactive process where an exchange of ideas takes place and where the focus generally includes, but is not limited to, professional and career development. Students consider faculty members who are supportive, aware of student needs, and show concern for students as mentors. Mentoring functions can occur in a variety of fashions and often during academic advising, informally after class, during office hours, during research and laboratory times, and as part of their involvement in clubs and organizations. Students do perceive faculty as mentors and seem to find themselves drawn to faculty mentors who have similar interests and career goals, are engaged with students outside of the classroom, and are willing to assist students in their personal and professional development. These findings have implications on faculty mentor training and formally organized mentoring programs

The Importance of Perceived Relevance: A Qualitative Evaluation of Patient’s Perceptions of Value and Impact Following a Low-Intensity Group-Based Pain Management Program

Background and objectives: Limited evidence exists exploring perceptions of which aspects of a pain management program are perceived as valuable and impactful. The aim of this study was to explore patient beliefs about which aspects of a pain management program were valued and/or had perceived impact. Materials and Methods: One-on-one structured interviews were conducted with 11 adults three months after their completion of the Spark Pain Program at Westmead Hospital, Sydney, Australia. Concepts in the transcripts were inductively identified and explored, utilizing thematic analysis to better understand their relevance to the study aim. Results: Four themes emerged: (1) “The program overall was positive, but…”; (2) “I valued my improved knowledge and understanding of pain, but…”; (3) “I valued the stretching/relaxation/pacing/activity monitoring”; and (4) “I valued being part of a supportive and understanding group”. Participants reported that they liked being treated as an individual within the group. A lack of perceived personal relevance of key messages was identified in some participants; it appears that patients in pain programs must determine that changes in knowledge, beliefs, and attitudes are personally relevant in order for the changes to have a significant impact on them. Conclusions: This study provides new insights into aspects of a pain management program that were perceived as valuable and impactful, areas that “missed the mark”, and hypotheses to guide the implementation of service delivery and program redesig

Native vegetation in Western Australia is actively involved with soil formation

Many adverse situations in Western Australian agriculture have arisen because in the past we cleared native perennial vegetation below safe ecological limits in order to grow annual crops and pasture. In retrospect, we did not fully understand the functioning of the native ecosystems concerned and thus did not foresee the long-term consequences. Research into the survival techniques of native species provides important lessons for future farming. By understanding the behaviour of plants and soils we can maximise their use in a sustainable way. Knowledge of the water acquisition and storage strategies of native plants in seasonally dry areas may be critically important to reducing the impact of farming practices on land degradation and associated threats to biodiversity. Longer term applications of the research described in this bulletin may be the development of agricultural systems more in tune with native soils, leading to improvements in water-use efficiency, reduced recharge and salinity, and more economic and sustainable agriculture. Research has demonstrated that soil and landscape formation in Western Australia has been largely driven by the recently advanced ‘phytotarium concept’ (Verboom & Pate 2006a). We define this concept as the system whereby major plant species and their microbial associates bioengineer the soil profiles in which they occur to their own advantage so that they can monopolise water and nutrients. This not only supports their own survival but also determines the direction of ecosystem evolution in their particular geographical and climatic region.https://researchlibrary.agric.wa.gov.au/bulletins/1221/thumbnail.jp