Some Physiochemical Parameters and Phytoplankton Standing Crop in Four Northeast Arkansas Commercial Fish Ponds

Physicochemical conditions and chlorophyll a standing crop were studied from July 1970 through June 1971 in four commercial catfish ponds at the Arkansas State University Experiment Farm near Walcott, Greene County, Arkansas. Determinations of dissolved oxygen, free carbon dioxide, total alkalinity, temperature, pH, transparency, and chlorophyll a standing crop were made at two-week intervals except during fish harvesting operations. One diurnal measurement of dissolved oxygen, free carbon dioxide, and temperature was conducted 25-26 June 1971. Increased oxygen concentrations coincided with increased chlorophyll α concentrations. Free carbon dioxide and chlorophyll α values varied inversely throughout the study. Diurnal concentrations of free carbon dioxide were greatest between 0300 and 0700 hours. Phenolphthalein and total alkalinity values fluctuated throughout the study period, and could not be correlated with other parameters measured. Thermal stratification occurred during the summer and was more pronounced in the more turbidponds. Diurnal temperature measurements indicated that stratification was diurnal. An inverse relationship was found between carbon dioxide and hydrogen-ion concentrations, and all ponds were essentially alkaline. Transparency was relatively constant before the ponds were drained but increased when the ponds were refilled. Suspended particulate matter contributed significantly to turbidity. Peaks of chlorophyll α concentration were found in summer, early autumn, and late winter

Returning the gaze from the margins: decoding representations of gender, race and sexuality in tourist images of Jamaica

The thesis adopts a post-colonial approach to examine the relationship between historical and contemporary visual representations of Jamaica and identifies the repeated visual associations made with blackness and servitude, and whiteness with luxury from the colonial period in Jamaica and the imperial context in Britain. The thesis addresses a range of tourist advertising images of Jamaica which are analysed in terms of their representations of race, gender, class and sexuality. The theoretical context of the thesis combines post-colonial theory with black feminist theory to make explicit the significance and relevance of conducting critical analysis of visual representations of Jamaica from a social, economic and politically marginal standpoint. Homi Bhabha's concept of ambivalence in colonial discourse, Foucault's approach to discourse analysis and Roland Barthes' semiotics were combined to establish the methodological framework of the thesis and to identify, historicise and deconstruct the repetition of familiar colonial relations constructed as privilege and servitude.The economic and social context, which led to the shift towards tourism in post-emancipation Jamaica, is discussed through the analysis of a selection of visual texts

A block coprocessor for user data rate improvements to GPRS coding scheme 4

The general packet radio service (GPRS) has been developed to allow packet data to be transported efficiently over an existing circuit-switched radio network, such as GSM. The main application of GPRS are in transporting Internet protocol (IP) datagrams from web servers (for telemetry or for mobile Internet browsers). Four GPRS baseband coding schemes are defined to offer a trade-off in requested data rates versus propagation channel conditions. However, data rates in the order of > 100 kbits/s are only achievable if the simplest coding scheme is used (CS-4) which offers little error detection and correction (EDC) (requiring excellent SNR) and the receiver hardware is capable of full duplex which is not currently available in the consumer market. A simple EDC scheme to improve the GPRS block error rate (BLER) performance is presented, particularly for CS-4, however gains in other coding schemes are seen. For every GPRS radio block that is corrected by the EDC scheme, the block does not need to be retransmitted releasing bandwidth in the channel and improving the user's application data rate. As GPRS requires intensive processing in the baseband, a viable field programmable gate array (FPGA) solution is presented in this paper

X-ray absorption and re-emission from an ionised outflow in the Type 1 QSO 2MASS 234449+1221

We report on the analysis of a short XMM-Newton observation of the reddened Type 1 QSO 2MASS 234449+1221 first identified in the Two Micron All-Sky Survey. The underlying X-ray continuum is found to be typical of a broad-line active galaxy, with photon index Gamma ~ 1.9. Low energy absorption can be modelled by a column N_H ~ 10^22 cm^{-2} of moderately ionised gas or a smaller column of cold gas. Addition of a soft X-ray emission component significantly improves the fit in both cases. With the assumption that the soft X-ray flux represents emission from gas photoionised by the incident X-ray continuum, a comparison of the absorbed and emitted luminosities indicates a covering factor of ~ 8-17%. The unusual opportunity to simultaneously observe and quantify ionised absorption and emission in 2MASS 234449+1221 is due to the relatively large opacity (for a Type 1 AGN) of the absorbing gas, which depresses the normally strong continuum below ~ 1 keV. A comparison of the soft X-ray emission of 2MASS 234449+1221 with that of other Type 1 and Type 2 AGN suggests the existence of an inner turbulent extension to ionised outflows, not detected in current high resolution X-ray spectra.Comment: 5 pages, 6 figures, accepted for publication in MNRA

Adult children of parents with mental illness: Dehumanization of a parent – ‘She wasn't the wreck in those years that she was to become later’

© 2017 Australian College of Mental Health Nurses Inc. Children who have lived with parental mental illness experience long-standing reduced health and social outcomes, alongside ongoing personal distress. While there has been some dialogue regarding interventions to support children who are living with parental mental illness, there remains a paucity of knowledge regarding adult children's experiences and potential needs. Given this, the aim of the present study was to establish parenting narratives of adult children who had experienced childhood parental mental illness. This included their experiences of being parented alongside their own subsequent parenting roles. Three men and 10 women, ranging from 30 to 78 years old, met individually with a researcher to tell their stories. Narratives were thematically analysed to establish themes. The findings of the study demonstrated that individuals who have lived with childhood parental mental illness dehumanized their parent with mental illness. The authors argue that all mental health services should be underpinned with a whole of family assessment and care philosophy. There is also a need for all mental health services to consider how policies and procedures might inadvertently dehumanize clients who are parents, which could contribute to familial dehumanization. This could prevent the dehumanization of parents who experience mental illness to preserve parental and child relationships

Excitation Energy Dependence of the Exciton Inner Ring

We report on the excitation energy dependence of the inner ring in the exciton emission pattern. The contrast of the inner ring is found to decrease with lowering excitation energy. Excitation by light tuned to the direct exciton resonance is found to effectively suppress excitation-induced heating of indirect excitons and facilitate the realization of a cold and dense exciton gas. The excitation energy dependence of the inner ring is explained in terms of exciton transport and cooling.Comment: 5 pages, 4 figure

Adult children of parents with mental illness: Parenting journeys

© 2018 The Author(s). Background: Individuals who have lived with childhood parental mental illness are at increased risk of developing mental health concerns. Yet there is limited knowledge about how a person's childhood experiences of parental mental illness may influence their subsequent parenting roles. Methods: This narrative study generated parenting narratives of adult children who had lived with childhood parental mental illness. Interviewees included 10 women and three men. Inductive thematic analysis was used to establish themes and sub-themes from the narratives. Results: The theme of parenting journeys with sub-themes of: 'adult children living with parenting worries' and 'adult children seeking emotional connectivity with their children and others' are presented. Conclusions: Parenting anxiety may be a common experience shared by all parents. However, adult children's worries in relation to their child/ren developing mental illness may be associated with their own experiences of childhood parental mental illness. All health professionals have a pinnacle role in supporting families to build resilience and harness positive experiences within familial relationships to recognise and mitigate parenting anxiety

Adult Children of Parents with Mental Illness: Losing Oneself. Who am I?

© 2016, Copyright © Taylor & Francis Group, LLC. There is a limited body of research that focuses on experiences of families of people with mental illness. While the body of knowledge concerning children of parents with mental illness is increasing, there remains limited discourse surrounding the experiences of adults who have lived with childhood parental mental illness. This paper examined one major theme of a study focusing on parenting narratives of adults who had experienced childhood parental mental illness. The narrative study from a metropolitan area of Australia reflects adult children's experiences of being overwhelmed with parental mental illness. They felt unsure of their own emotions and felt they had lost a sense of who they were as individual people. Adult children felt confused about their sense of reality, particularly for those whose parent had a diagnosis of schizophrenia or psychosis. Their experiences of loss were closely associated with changing self identity. Furthermore, many of the narratives demonstrated experiences of grief for adult children. Greater understanding of adult children's perceptions of being parented by a person with mental illness, alongside their experiences of loss, has the potential to help health and social care professionals to facilitate greater resilience for families who are living with parental mental illness