Toward a hip hop pedagogy of discomfort

In this article, we offer philosophical reflections on our participation in a hip hop network and seminar series, UK HipHopEd, where British hip hop artists, activists and educators meet to deliberate over the politics of their work. We analyse this dialogic cultural space with reference to Megan Boler’s notion of a “pedagogy of discomfort”. We argue that the productive tension of the seminars owes much to the diversity of the participants. We discuss how these participants, despite a common interest in hip hop, may have to bridge epistemological and ontological divides in order to understand and accept each other. We examine how dialogue can founder on intransigence and dogmatism when discomfort becomes too difficult to tolerate. We conclude that these reflexive encounters can, however, cultivate a willingness to “stay with” discomfort. This, we insist, opens up new educational and activist horizons within and beyond UK HipHopEd, which are alive to transformative encounters

Relationship of serum adiponectin and resistin to glucose intolerance and fat topography in south-Asians

Objectives South-Asians have lower adiponectin levels compared to Caucasians. It was not clear however, if this intrinsic feature is related to aspects of glucose metabolism. This study aims to determine the relationship between body fat distribution and adipocytokine in South-Asian subjects by measuring serum adipocytokines, adiposity, insulinemia, and glucose tolerance levels. Methods In this cross-sectional study, 150 South-Asians (80 males, 70 females) were included, 60 had NGT (Control group, Age 51.33 ± 11.5, BMI 27 ± 2.3), 60 had IGT (Age 57.7 ± 12.5, BMI 27.2 ± 2.7), 30 had type 2 DM (Age 49.5 ± 10.9, BMI 28 ± 1.7). Measures of adiposity, adipocytokines and other metabolic parameters were determined. Parameters were measured using the following: a) Plasma glucose by glucose oxidase method b) CRP by immunoturbidimetric method (Roche/Hitachi analyser) c) insulin by Medgenix INS-ELISA immunoenzymetric assay by Biosource (Belgium) d) Leptin, Adiponectin by radioimmunoassay kits by Linco Research (St. Charles MO) e) Resistin by immunoassay kits by Phoenix Pharmaceuticals INC (530 Harbor Boulevard, Belmont CA 94002, USA). Results Adiponectin concentrations were highest in NGT, decreased in IGT and lowest in DMT2, (both p < 0.01). Leptin was significantly higher in DMT2 than IGT and NGT p = 0.02 and 0.04 respectively. There was a significant positive relationships between log adiponectin and 2-hr insulin values, p = 0.028 and history of hypertensions and a ischemic heart disease p = 0.008 with R = 0.65. There was a significant inverse correlation between log adiponectin and resistin, p < 0.01. Conclusion Resistin levels had an inverse correlation with adiponectin levels, indicating an inverse relationship between pro-inflammatory cytokines and adiponectin. Adiponectin levels were related to glucose tolerance

A Coherent Through-Wall MIMO Phased Array Imaging Radar based on Time-Duplexed Switching

Through-the-Wall (TW) radar sensors are gaining increasing interest for security, surveillance and search and rescue applications. Additionally, the integration of Multiple-Input, Multiple-Output (MIMO) techniques with phased array radar is allowing higher performance at lower cost. In this paper we present a 4-by-4 TW MIMO phased array imaging radar operating at 2.4 GHz with 200 MHz bandwidth. To achieve high imaging resolution in a cost-effective manner, the 4 Tx and 4 Rx elements are used to synthesize a uniform linear array (ULA) of 16 virtual elements. Furthermore, the transmitter is based on a single-channel 4-element time-multiplexed switched array. In transmission, the radar utilizes frequency modulated continuous wave (FMCW) waveforms that undergo de-ramping on receive to allow digitization at relatively low sampling rates, which then simplifies the imaging process. This architecture has been designed for the short-range TW scenarios envisaged, and permits sufficient time to switch between antenna elements. The paper first outlines the system characteristics before describing the key signal processing and imaging algorithms which are based on traditional Fast Fourier Transform (FFT) processing. These techniques are implemented in LabVIEW software. Finally, we report results from an experimental campaign that investigated the imaging capabilities of the system and demonstrated the detection of personnel targets. Moreover, we show that multiple targets within a room with greater than approximately 1 meter separation can be distinguished from one another

Critical transformation in higher education: Ethical reflections on #

Protest movements such as the #MustFall currently dominate the South African higher education landscape. This article focuses on such protest movements, paying particular attention to protests against gender-based violations at some universities, commonly referred to as #RapeMustFall, as an exemplar of the gender injustices and inequities that persist. We argue that debates and policies about gender-based violations at universities cannot and should not be overshadowed by deficient grand narratives informed by patriarchy, colonialism and capitalism. To frame this argument, we critically review the current status quo from a gender mainstreaming policy-making perspective. We then argue the merits of an ethical perspective to transformation in higher education. Critical transformation in higher education requires not only epistemological change and access, but should be a fundamentally ethical pursuit

Insulin mediated upregulation of the renin angiotensin system in human subcutaneous adipocytes is reduced by Rosiglitazone

Background: Obesity associated hypertension is likely to be due to multiple mechanisms. Identification of the renin-angiotensin system (RAS) within adipose tissue does, however, suggest a potential causal role for it in obesity-associated hypertension. Obese patients are often hyperinsulinaemic, but mechanisms underlying insulin upregulation of the RAS in adipose tissue are unclear. TNFα, an inducer of angiotensinogen in hepatocytes, is elevated in hyperinsulinaemic, obese individuals, and may provide a link in mediating insulin upregulation of the RAS in adipose tissue. Further, thiazolidinediones lower blood pressure in vivo and downregulation of the RAS in adipose tissue may contribute to this effect. We therefore examined the effect of rosiglitazone (RSG), on the insulin mediated upregulation of the RAS. Methods and Results: Sera were obtained from the arterial circulation and from venous blood draining subcutaneous abdominal adipose tissue. Isolated human abdominal subcutaneous adipocytes (n=12) were treated with insulin (1-1000nM) and insulin in combination with RSG (10nM), and RSG (10nM) alone to determine angiotensinogen expression, angiotensin II, bradykinin and TNFα secretion. Subcutaneous adipocytes were also treated with TNFα (10-100ng/mL) to examine the direct effect on angiotensinogen expression and angiotensin II secretion. The findings showed that the arterio-venous difference in angiotensin II levels was significant (↑23%; p<0.001). Insulin increased TNFα secretion in a concentration-dependent manner (p<0.01) whilst RSG (10nM) significantly reduced the insulin mediated rise in TNFα (p<0.001), as well as AGT and angiotensin II. TNFα also increased angiotensinogen and angiotensin II in isolated adipocytes. Conclusions: Our in vivo data suggest that human subcutaneous adipose tissue is a significant source of angiotensin II. This study also demonstrates a potential TNFα mediated mechanism through which insulin may stimulate the RAS and may contribute to explain obesity associated hypertension. RSG downregulates the RAS in subcutaneous adipose tissue and this effect may contribute to the long-term effect of RSG on blood pressure

State-space average modelling of converters with parasitics and storage-time modulation

The State-Space Averaging approach to modelling switching converter power stages is used to extend the analytical descriptions of the buck, boost, buck-boost, and Cuk converters to included the effects of all parasitic resistances and transistor storage-time modulation. The analysis reveals for the first time a new and unexpected term in the line to ouput response of the Cuk converter. The new term contains a right half-plane zero produced by the energy transfer capacitance in combination with the duty-ratio-weighted sum of the on-resistances of the transistor and diode plus a non-dissipative ac resistance term due to transistor storage-time modulation. The conventional circuit model of the converter is modified to include the effects of the new term. The improved model permits an eas physical interpretation of the new zero, which has been observed only the in Cuk converter. An extended analysis of storage-time modulation in bipolar transistor switches shows that the ac small-signal performance of a switching converter is highly dependent on the nature of the base drive. It is demonstrated that storage-time modulation in conjunction with a proportional base drive can produce instability in switching converters, even open-loop. The results of these analyses are verified experimentally and their impacts on practical converters are discussed

Unusual urological presentations of HIV/AIDS at King Edward VIII Hospital

No Abstract

Factors influencing the choice of religion studies as a subject in the further education and training band: a case study of two schools within the Uitenhage District of the Eastern Cape Province

In 2006, a new subject, Religion Studies (RS), was introduced in Grade 10 as an optional subject. It represents a major paradigm shift in education of religion at the public school level. Minimal research has been conducted on the factors influencing the choice of RS in Grade 10 by the learners, subject advisors, principal and educators. This subject might constitute an “easy option” to boost the learner’s performance. Former or “recycled Biblical Studies” educators may be available or even volunteer to teach this subject or they may have to be absorbed within the system. Ethics, morals, cross cultural respect and non-discrimination are critical for the development of the South African democracy. While RS is optional, it could play a critical role towards achieving these outcomes. This study restricted its focus to the Uitenhage District of the Province of the Eastern Cape. After careful consideration, the interpretive approach seemed to offer the best access to the kind of knowledge the researcher desired. A theoretical framework, that narrowly links rational choice with cultural reproduction theory, can prove to be inadequate. This study would be deficient if it was restricted to the family or home factors. Peer influence, self-efficacy or ability, utility value, motivation and teacher or school factors have to be included. The case study approach was used for this research.Semi-structured interviews were used to obtain qualitative responses from learners, from principals and educators whose schools are offering Religion Studies, and from subject advisors with oversight of this subject. This study discovered, inter alia, that learners did not have a real choice but were led to believe that RS was compulsory. The school has an influential role on a learner’s subject choice. Parental participation fluctuated from active to passive guidance. Learners saw RS as an easy subject and an aggregate booster. The school community both informs and influences the subject choice of learners. The peer influence of friends and fellow learners also featured in subject choice. RS teaches about religion and culture, respect, catalyses moral development, is enjoyable and easy to study but requires extensive reading. The limited diversity in RS classes did not allow for this respect to be tested. RS can catalyse the development of moral values. Despite this subject being an aggregate booster, learners enjoyed RS and therefore do well. After balancing the “costs and benefits,” according to rational choice theory, learners choose subjects with a utility value for their future career. RS opens the possibilities directly and indirectly. The majority of learners said that RS will assist them in their career path, not only narrowly in religious and pedagogical vocations but also more widely. RS could assist in careers with constituencies of religious diversity, in the medical field, human resources and journalism. RS fosters citizenship, non-discrimination and the rounded development of the learner and these objectives have attracted educators to teach RS. Learners enjoy RS, have self-efficacy, their performance ranges from good to well. Educators have a positive view of RS and contend that RS fosters respect, analytical, critical, constructive and lateral thinking. Principals were introduced to RS when it replaced Biblical Studies and much confusion between the two has ensued. RS is inclusive and also catalyses the development of morals. Principals emphasised the ongoing need for retraining of teachers through refresher courses, workshops and seminars and an involved role of the Department. Retraining would prevent the RS educator from being an “ad hoc teacher.” The Department has failed to act proactively in the introduction of RS as a new subject. Challenges lie in the integration of learning, essay writing skills and developing good model assessment tasks. Understanding RS terminology, confusion of RS with Biblical Studies, a shortage of resources, the vast content and the subject related methodology of RS are other concerns. All the stakeholder groups confirm this misperception. Researchers also concur with this finding. Biblical Studies educators have no advantage in RS but rather also necessitate retraining. RS, as a new subject with low intake, was not afforded all the requisite support. The number of schools offering RS is static. Provincial officials also reflect confusion of RS and Biblical Studies. The lack of staffing of the subject specialist at the National or Provincial level office is perturbing. Based on this study of the factors influencing the choice of Religious Studies in the FET Band, the following recommendations were made: Steps should be taken to ensure that learners be given a real choice Sharing of detailed information about the unique nature and outcomes of RS including its critical engagement Informed stakeholder groupings e.g. parents, educators, principal, SGB, community, Provincial and National Department of Education should not abuse their influential role of support by overt or covert compulsion Clarity between spiritual formation and catalysing moral development Educators should continue to foster enjoyment of RS Steps to be taken to facilitate integration of learning, developing essay writing skills and encourage good assessment tasks Increase diversity in class so that respect can be tested More information be given about direct and indirect career pathing Need for continual re-training through refresher courses, workshops and seminars Steps to be taken to address inadequate resources of RS Despite the “flattering” results for RS, efforts need to be taken by all the stakeholder groupings to ensure that learner’s competencies become a means in which RS markets itself Concerted on-going effort be made to clarify the confusion between RS and Biblical Studies That the Department assumes a more engaged role in RS Steps be taken by all the stakeholder groupings to encourage religious diversity in the RS class The National Department of Education has to staff both the National and Provincial Offices with well-equipped and highly motivated leaders

Physiotherapists’ perception of a community-based primary healthcare clinical education approach to undergraduate learning

Background. South African health systems are challenged by numerous stressors, such as a lack of resources, staff shortages and overburdened public sector demands. This necessitates appropriately equipped and trained healthcare professionals to meet the demands of this system. Community-based primary healthcare (PHC) clinical education is an approach towards preparing health science students to meet these demands. Clinical education is the cornerstone of undergraduate training. Physiotherapists are among the healthcare professionals who require undergraduate training that drives competence for independent practice.Objective. To explore the perceptions and experiences of physiotherapists as clinical supervisors within a physiotherapy undergraduate programme that adopted a community-based PHC approach to clinical training.Methods. An explorative qualitative approach was used, with semi-structured interviews with 10 purposively selected physiotherapists supervising students on the newly introduced platform. Data were transcribed and analysed using content analysis.Results. Seven themes emerged from the data, which relate to curriculum redress, organisational factors, stakeholder dynamics, barriers and enablers to decentralised clinical training, perceived preparedness for practice and recommendations.Conclusions. As the need for an increasing number of health professionals is realised, more innovative methods for clinical education of undergraduate health science students are required. Community-based PHC training for physiotherapy students is one such approach and was generally perceived as a valuable framework to incorporate competencies required for practice as future independent practitioners. Furthermore, improved communication between students, clinicians and academic staff was seen as a recommendation to influence clinical education