3 resultados para Social impact

em DRUM (Digital Repository at the University of Maryland)


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Black women cultural entrepreneurs are a group of entrepreneurs that merit further inquiry. Using qualitative interview and participant observation data, this dissertation investigates the ways in which black women cultural entrepreneurs define success. My findings reveal that black women cultural entrepreneurs are a particular interpretive community with values, perspectives and experiences, which are not wholly idiosyncratic, but shaped by collective experiences and larger social forces. Black women are not a monolith, but they are neither disconnected individuals completely devoid of group identity. The meaning they give to their businesses, professional experiences and understandings of success are influenced by their shared social position and identity as black women. For black women cultural entrepreneurs, the New Bottom Line goes beyond financial gain. This group, while not uniform in their understandings of success, largely understand the most meaningful accomplishments they can realize as social impact in the form of cultural intervention, black community uplift and professional/creative agency. These particular considerations represent a new paramount concern, and alternative understanding of what is typically understood as the bottom line. The structural, social and personal challenges that black women cultural entrepreneurs encounter have shaped their particular perspectives on success. I also explore the ways research participants articulated an oppositional consciousness to create an alternative means of defining and achieving success. I argue that this consciousness empowers them with resources, connections and meaning not readily conferred in traditional entrepreneurial settings. In this sense, the personal, social and structural challenges have been foundational to the formation of an alternative economy, which I refer to as The Connected Economy. Leading and participating in The Connected Economy, black women cultural entrepreneurs represent a black feminist and womanist critique of dominant understandings of success.

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An economy of effort is a core characteristic of highly skilled motor performance often described as being effortless or automatic. Electroencephalographic (EEG) evaluation of cortical activity in elite performers has consistently revealed a reduction in extraneous associative cortical activity and an enhancement of task-relevant cortical processes. However, this has only been demonstrated under what are essentially practice-like conditions. Recently it has been shown that cerebral cortical activity becomes less efficient when performance occurs in a stressful, complex social environment. This dissertation examines the impact of motor skill training or practice on the EEG cortical dynamics that underlie performance in a stressful, complex social environment. Sixteen ROTC cadets participated in head-to-head pistol shooting competitions before and after completing nine sessions of skill training over three weeks. Spectral power increased in the theta frequency band and decreased in the low alpha frequency band after skill training. EEG Coherence increased in the left frontal region and decreased in the left temporal region after the practice intervention. These suggest a refinement of cerebral cortical dynamics with a reduction of task extraneous processing in the left frontal region and an enhancement of task related processing in the left temporal region consistent with the skill level reached by participants. Partitioning performance into ‘best’ and ‘worst’ based on shot score revealed that deliberate practice appears to optimize cerebral cortical activity of ‘best’ performances which are accompanied by a reduction in task-specific processes reflected by increased high-alpha power, while ‘worst’ performances are characterized by an inappropriate reduction in task-specific processing resulting in a loss of focus reflected by higher high-alpha power after training when compared to ‘best’ performances. Together, these studies demonstrate the power of experience afforded by practice, as a controllable factor, to promote resilience of cerebral cortical efficiency in complex environments.

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Online courses are rapidly replacing traditional, face-to-face lectures in American universities (Allen & Seaman, 2011). As technology improves, this trend will likely continue and accelerate. Researchers must evaluate the impact of online courses compared to their traditional counterparts. This two-part study quantifies the effect of two variables – social presence and learner control – on students’ recall, application and perceived learning levels in different lecture formats. Students in introductory courses at a four-year, public, American university were randomly assigned into three groups to view distinct lecture formats, one in a traditional classroom and two via the Internet. Upon viewing the single lecture, the students were asked to fill out a test and survey to quantify teacher immediacy, recall and application, and perceived learning levels across lecture formats. The study found that different levels of social presence and learner control affected students’ perceived learning levels but did not impact recall or application.