The Role of Clustered Organization and Generation of Mixed Properties in Macaque V2

Throughout the mammalian cortex, neurons of similar response characteristics group together into topographic functional domains. The genesis and role of this organization remains in question, but it has been proposed to affect the mixed properties of neurons. These types of neurons possess multiple receptive field preferences, such as a cell responding to a color and an oriented stimulus. To examine the functionality of clustered organization and their effect in generation of neurons possessing mixed properties, this dissertation examined the secondary visual cortex (V2) of the Macaca fasicularis. This particular cortex is comprised of domains organized according to distinct visual stimulus components, specifically clusters of neurons partitioned by color and orientation preferences within a close proximity. In the first series of experiments (Chapter 3), a computer model of a cortical area based upon macaque V2 investigated the effect of clusters of like-preferring neurons on the probability of two different preference terminals synapsing on a particular cell. These results indicate that presence of at least one cluster significantly increases the probability of multiple preferences arriving at a neuron. The second series of experiments (Chapter 4) used single unit electrophysiology to investigate the temporal properties of V2 neurons in response to achromatic and colored oriented stimuli. With the addition of color to the stimulus, an increase in latency, an increase to the time point of the maximum rate of firing, and a decreased initial-phase response with a sustained later-phase response were observed. These studies indicate that functional clusters of neurons significantly increase the joint probability of the co-localization of differing preference terminals, potentially yielding neurons with mixed preferences through these intra-areal connections. Furthermore, the temporal characteristics of V2 neurons, as seen in observed latency and time of maximum spiking, support this idea of domain-enhanced intra-areal integration

A Need of Further Training for Marriage and Family Therapy Students’ on Food Addiction and Related Eating Disorders

The purpose of this study was to explore Marriage and Family Therapy students’ perspectives regarding food addiction and associated eating disorders, as a clinical treatment issue. In a standard addictions course housed in a Marriage and Family Therapy program approved by the Commission on Accreditation for Marriage and Family Therapy Education (COAMFTE), 20 students completed a qualitative survey where they reflected on the topic of food addiction, Binge Eating Disorder, and Bulimia Nervosa, within the context of individual, couple, and family relationships. In the study four major themes emerged, which included (1) Defining Food Addiction, (2) Perceptions of Eating Disorders, (3) Conceptualizing Systemic Treatment, and (4) Experiences in clinical training. Clinical implications, recommendations for MFT education, clinical practice, and future research are discussed. Findings suggest that while MFT students in the study were well versed in conceptualized systemic treatment, it was of a general treatment and understanding using MFT theory, and not in relation to or specifically concerning food addictions and their connection or distinction from Binge Eating Disorder and/or other eating disorders found in the Diagnostic and Statistical Manual, potentially impacting the level of skillfully and appropriately working with clients

Pastoral Leaders’ Perception of Obesity and Their Role Within Faith-Based Organizations

The purpose of this study was to explore the perspectives of pastoral leaders regarding obesity and health within faith-based organizations (FBOs). In this study, the authors focused on gaining additional insight regarding how pastoral leaders conceptualize and make sense of their roles in terms of health promotion within FBOs. Utilizing a qualitative research methodological approach, specifically Qualitative Description, authors administered a qualitative survey to 12 participants which yielded three emerging themes: (1) perceived scope, (2) understanding and use of resources, and (3) defining obesity through pastoral leaders’ perspectives. In the study, investigators discuss clinical implications and provide recommendations

Life After NBC’s “The Biggest Loser”: The Experiences and Perspectives of Former Reality TV Contestants

Utilizing Qualitative Description influenced by aspects of phenomenology, we conducted fifteen open-ended, semi-structured interviews with former contestants of NBC’s “The Biggest Loser.” The purpose of the study was to explore experiences of significant weight loss. We focused on challenges, emotional well-being, and relational dynamics of contestants transitioning through their weight loss journeys, which included what happened after the show was completed. Further, we analyzed perspectives regarding the utility of Marriage and Family Therapists (MFTs) in working with this population. In the study, three themes emerged which included: (1) Living at the ranch: It’s reality TV, not reality; (2) After the confetti falls: Post-Traumatic Reality TV Syndrome and The Whiplash Effect; and (3) Therapeutic treatment: Much needed but nowhere to be found. The study includes a rich description of the data, as well as a discussion of clinical implications

Life During The Biggest Loser: Experiences and Perspectives of Non-Contestant Romantic Partners

For this study, authors engaged in 9 semi-structured interviews with romantic partners of contestants who were involved with a weight loss intervention (The Biggest Loser), to gain insight into the phenomenon of weight loss within the context of couple relationships and reality television. Utilizing Basic Qualitative Description influenced by aspects of phenomenology, the authors explored the role of weight loss and the role that the specific intervention utilized, has played within the couple relationship. Building upon previous research (Moore, Cooper, Williams, & Zwierstra, 2017a) authors added the voice of the non-contestant partners to the discussion and explored experiences of weight loss and perceptions regarding the utilization of Marriage and Family Therapists during the weight loss process. The major themes that emerged were (1) Behind the Scenes: The sacrifices we make, (2) After the Show Wraps: Re-entry and the Transition Home, and (3) Perceptions of MFT: Addressing couple relationships. Implications for Marriage and Family Therapists as well as other professionals involved in working with couples during weight loss are discussed as well as future directions in research

A field investigation of phreatophyte-induced fluctuations in the water table

This is the published version. Copyright American Geophysical Union[1] Hydrographs from shallow wells in vegetated riparian zones frequently display a distinctive pattern of diurnal water table fluctuations produced by variations in plant water use. A multisite investigation assessed the major controls on these fluctuations and the ecohydrologic insights that can be gleaned from them. Spatial and temporal variations in the amplitude of the fluctuations are primarily a function of variations in (1) the meteorological drivers of plant water use, (2) vegetation density, type, and vitality, and (3) the specific yield of sediments in the vicinity of the water table. Past hydrologic conditions experienced by the riparian zone vegetation, either in previous years or earlier within the same growing season, are also an important control. Diurnal water table fluctuations can be considered a diagnostic indicator of groundwater consumption by phreatophytes at most sites, so the information embedded within these fluctuations should be more widely exploited in ecohydrologic studies

Changing foreign policy: the Obama Administration’s decision to oust Mubarak

This paper analyses the decision of the Obama administration to redirect its foreign policy towards Egypt in the wake of the Arab Spring. It attempts to highlight the issue of how governments deal with decision-making at times of crisis, and under which circumstances they take critical decisions that lead to major shifts in their foreign policy track record. It focuses on the process that led to a reassessment of US (United States) foreign policy, shifting from decades of support to the autocratic regime of Hosni Mubarak, towards backing his ouster. Specifically, the paper attempts to assess to what extent the decision to withdraw US support from a longstanding state-leader and ally in the Middle East can be seen as a foreign policy change (FPC). A relevant research question this paper pursues is: how can the withdrawal of US support to a regime considered as an ally be considered, in itself, as a radical FPC

A through-life costing methodology for use in product-service-systems

Availability-based contracts which provide customers with the use of assets such as machines, ships, aircraft platforms or subsystems like engines and avionics are increasingly offered as an alternative to the purchase of an asset and separate support contracts. The cost of servicing a durable product can be addressed by Through-life Costing (TLC). Providers of advanced services are now concerned with the cost of delivering outcomes that meet customer requirements using combinations of assets and activities via a Product Service System (PSS). This paper addresses the question: To what extent are the current approaches to TLC methodologically appropriate for costing the provision of advanced services, particularly availability, through a PSS? A novel methodology for TLC is outlined addressing the challenges of PSS cost assessment with regard to 'what?' (cost object), 'why/to what extent?' (scope and boundaries), and 'how?' (computations). The research provides clarity for those seeking to cost availability in a performance-orientated contractual setting and provides insight to the measures that may be associated with it. In particular, a reductionist approach that focuses on one cost object at a time is not appropriate for a PSS. Costing an advanced service delivered through a PSS is a problem of attributing the value of means to the economic activities carried out for specific ends to be achieved. Cost results from the interplay between monetary and non-monetary metrics, and uncertainties thereof. Whilst seeking to ensure generality of the findings, the application of TLC examined here is limited to a military aircraft platform and subsystems. © 2014 Elsevier B.V. All rights reserved