Thesis (MCur (Nursing Science))--University of Stellenbosch, 2009. / ENGLISH ABSTRACT: The work environment in critical care units in South Africa is hampered by a profound shortage of nurses, heavy workloads, conflict, high levels of stress, lack of motivation and dissatisfaction among the staff. The task of managing a C.C.U. has therefore become a challenge. It is important that unit managers apply a leadership style that matches these challenges. The aim of this study was to investigate the ideal style of leadership. The objectives set for the study were to identify the ideal leadership style required in the following areas:  administrative functions  education functions  patient care  research An explorative, descriptive research design was applied, with a quantitative approach to determine the ideal leadership style for unit managers in critical care units of private health care institutions. The research sample consisted of all nurses working permanently in eleven private hospitals in the Cape Metropolitan area. A questionnaire consisting of predominantly closed questions was used for the collection of data, which was collected by the researcher in person. Ethical approval was obtained from the Committee of Human Science Research at Stellenbosch University. Permission to conduct the research was obtained from the institutions and informed consent from the participants. A pilot study was conducted to test the questionnaire at a private hospital which did not form part of the study. A 10% sample of the relevant staff, namely 27 participants were involved in this study. The validity and reliability was assured through the pilot study and the use of a statistician as well as experts in nursing and a research methodologist. Data was tabulated and presented in histograms and frequencies. Statistical significant associations were drawn between variables, using the Chi-square test. The Spearman rank (rho) order correlation was used to show the strength of the relationship between two continuous variables. Findings of the study show that participatory leadership style and transformational leadership approach were valued in all four (4) of the objectives. Emphasis was placed on consultation prior to any decisions. Nurses requested an opportunity to give feedback on a regular basis regarding the unit managers conduct (Chi-square test p = 0.025). They also agreed that unit managers should apply the necessary rules and procedures (Chi-square test p = 0.016). A huge request was made for integrity, trust, impartiality, openness, approachability and particularly honesty. The nurses also maintained that the nurse manager’s behaviour should be congruent. Furthermore, the results indicate that nurses would like to be empowered by:  being involved in the scheduling of off-duties  taking the lead in climate meetings  being granted opportunities (to all categories of nurses) to attend managerial meetings. N = 41 (48.2%) of nurses admitted that unit managers would instruct them to cope with insufficient staffing pertaining to ventilated patients, putting them under severe strain and at risk legally. N = 39 (47%) of nurses admitted that unit managers only consider qualifications and experience in the delegation of tasks if the workload in the unit justifies it. Safe patient care is not always a priority. N = 99 (96%) of nurses agreed that autocratic behaviour relating to task delegation exists. Recommendations included the application of transformational leadership and participatory management. The aim to create a healthier, more favourable work environment for critical care nurses will hopefully be attained through applying the ideal leadership style and leadership approach. / AFRIKAANSE OPSOMMING: Die werksverrigtinge in kritieke sorgeenhede in Suid-Afrika word deur ‘n ernstige tekort aan verpleegsters, hoë werklading, konflik, spanning, min motivering en baie ontevredenheid onder verpleeglui gekortwiek. Die leiding en bestuur van ‘n kritieke sorgeenheid is dus nie ‘n maklike taak nie. Dit is dus belangrik dat eenheidsbestuurders ‘n leierskapstyl aan die dag lê wat dié uitdagings doeltreffend aanspreek. Die doel van die studie is dus om ondersoek in te stel na die wenslike leierskapstyl vir kritieke sorgeenhede. Die doelwitte daargestel is dus om die ideale leierskapstyl in elk van die volgende funksies te bepaal:  administrasie  opleiding  pasiënte-sorg  navorsing Die ideale leierskapstyl vir eenheidbestuurders in kritieke sorgeenhede in privaathospitale is bepaal deur ‘n kwantitatiewe benadering met ‘n beskrywende ontwerp toe te pas. Die populasie het alle kritieke sorg verpleeglui ( permanent werksaam by een van elf privaathospitale in die Kaapse Metropool) ingesluit. Instrumentasie het ‘n vraelys behels (met oorwegend geslote vrae) en data is persoonlik deur die navorser ingevorder. Etiese toestemming is vanaf die Etiese Komitee van die Mediese Fakulteit te Universiteit Stellenbosch verkry asook die hoofde van die verskillende privaathospitale waar navorsing plaasgevind het. Ingeligte toestemming is ook van elkeen van die deelnemers verkry. Ten einde die vraelys te toets, is ‘n loodstudie by ‘n privaathospitaal ( wat nie by die studie ingesluit was nie) gedoen. Die loodstudie het N = 27 (10%) van die totale populasie behels. Die betroubaarheid en geldigheid van die studie is deur die loodstudie, die gebruik van ‘n statistikus, verpleegdeskundiges en die navorser-metodoloog versterk. Data is getabuleer en in histogramme en frekwensies voorgestel. Deur die Chi-square- toets te gebruik, is statisties betekenisvolle assosiasies tussen veranderlikes bepaal. Ten einde sterkte van verhoudings tussen twee opeenvolgende veranderlikes te bepaal, is die Spearman rangordekorrelasie (rho) aangewend. Die bevindings van die studie het getoon dat ‘n deelnemende bestuurstyl en transformasie-leierskapbenadering die mees aangewese keuse vir al vier doelwitte is. Die toepassing van veral ‘n deelnemende besluitnemingsproses het groot voorrang geniet, Verpleegkundiges wil daarbenewens ook op ‘n gereelde basis geleentheid hê om terugvoering oor die leierskapgedrag van die eenheidsbestuurder te gee (Chi-square toets p = 0.025). Ook verlang die deelnemers dat eenheidsbestuurders nie reëls en regulasies moet verontagsaam nie (Chi-square toets p = 0.016). ‘n Ernstige versoek is gerig ten opsigte van integriteit met pertinente verwysing na eerlikheid, vertroue, onpartydigheid, deursigtigheid, toeganklikheid en dat die leier se woorde en dade moet ooreenstem. Die resultate het verder getoon dat verpleegsters graag bemagtig wil word deur:  betrokkenheid in die skedulering van afdienste,  leiding in klimaatsvergaderings te wil neem,  geleentheid te hê om bestuurvergaderings by te woon (alle kategorieë van verpleegkundiges).. N = 39 (48.2%) van verpleegkundiges het erken dat hulle gedwonge personeeltekorte ten opsigte van geventileerde pasiënte ervaar en dus aan mediese geregtelike risiko’s en onnodige druk blootgestel word. N 39 (47%) van verpleegkundiges het erken dat eenheidsbestuuders kwalifikasies en ondervinding slegs in ag neem indien die werklading in die eenheid dit toelaat..Veilige pasiëntesorg kry dus nie altyd voorkeur nie. N = 99 (96%) van verpleegkundiges het erken dat outokratiese gedrag ( wat met werkstoewysing verband hou) wel voorkom. ‘n Transformasie leierskapsbenadering en deelnemende bestuurstyl is dus aanbeveel. Die hoop word dus uitgespreek dat deur aan die verpleegkundiges se versoeke ten opsigte van die ideale bestuursbenadering en bestuurstyl te voldoen, die werksatmosfeer binne kritieke sorgeenhede toenemend gesonder en dus aangenamer sal word.

Thesis (MCur (Interdisciplinary Health Sciences. Nursing Science))--University of Stellenbosch, 2010. / ENGLISH ABSTRACT: Critical care nursing is the specialty within nursing that deals with an individual's response to life-threatening problems. These life threatening problems require continuous in-depth assessment and intense therapeutic measures and interventions. The level of nursing care is intense and the amount of documentation is enormous in the intensive care unit. Failure to document any aspects, may threaten the continuity of care and patient safety. Furthermore, it may result in negligence that may result in litigation. The purpose of this study was to retrospectively analyse nursing documentation in the intensive care units of an academic hospital in the Western Cape. The objectives set for this study were to determine whether the documentation of the: • assessment of the patients were adequate; • diagnoses were based on the assessment; • nursing care plans were based on the diagnoses; • nursing care plans were implemented and • nursing care plan shows evidence of continuous evaluation A retrospective exploratory- descriptive research design with a quantitative approach was applied to audit objectively the status of nursing documentation of patients who were admitted to the ICU’s of an academic hospital in the Western Cape in the first 48 hours of admission. Ethical approval was obtained from the University of Stellenbosch and consent from the Chief Executive Officer of the academic hospital to conduct the research in the hospital under study. The research population (N) was the documentation (files) of patients admitted in the ICU’s between 1 July 2008 and 31 December 2008. A stratified sample was drawn consisting of 151 files. The researcher collected the data personally utilising a pretested audit instrument. The reliability and validity was assured through experts in nursing science and intensive care nursing, a statistician and a research methodologist. A pilot study was conducted to pretest the instrument and the feasibility of the study. Modifications to the instrument were done based on suggestions from the experts and findings of the pilot study. Data analysis included statistical associations between variables using the Chi-square test on a 95% confidence level. Data is presented in the form of figures, tables and frequencies. The findings of the study show that the nursing documentation in the intensive unit is inadequate with the following total mean scores: • Assessment 62.6% • Nursing diagnosis 53.1% • Nursing care plans 37.1% • Implementation 72.6% • Evaluation 40.5%. In conclusion nursing documentation of patients admitted to an ICU is inadequate during the first 48 hours of admission. Poor documentation threatens the safety of patients and demands urgent improvement. Recommendations to improve the documentation include nursing practice supervision, quality improvement programmes, in-service training, evidence based practice and further research. / AFRIKAANSE OPSOMMING: Kritieke-sorg verpleging is die spesialiteit in verpleging wat betrekking het op die individu se reaksie.op lewensgevaarlike probleme.Hierdie lewensgevaarlike probleme benodig deurlopend deeglike beraming en intense terapeutiese benaderings en intervensies. In die intensiewesorg eenheid is die vlak van verpleegsorg baie intens en die dokumentasie hoeveelheid is enorm. Versuim om enige aspekte van sorg deeglik en akkuraat te dokumenteer, kan die deurlopendheid van sorg sowel as die veiligheid van die pasient bedreig. Verder kan dit tot regsstappe lei as gevolg van nalatigheid. Die doel van hierdie studie was om ‘n retrospektiewe analise van verpleeg dokumentasie in die intensiewe sorgeenhede van ‘n akademiese hospitaal in die Wes Kaap te doen. Die doelwitte van hierdie studie was om vas te stel of die dokumentasie van die: • beraming van die pasiênt voldoende gedoen is • verpleegdiagnose gebaseer is op die beraming • verpleegsorgplan gebaseer is op die diagnose • implementering van die verpleegsorgplan en • verpleegsorgplan bewyse toon. van deurlopende evaluasie ‘n Retrospektiewe eksploratiewe-beskrywende navorsingsontwerp met ‘n kwantitatiewe benadering is toegepas ten einde die status van verpleegdokumentasie van pasiente wat toegalaat is tot die intensiewesorg eenhede van ‘n akademiese hospitaal in die Wes Kaap in die eerste 48 uur na toelating te bepaal. Etiese goedkeuring is verkry van die Universiteit van Stellenbosch asook vanaf die Hoof Uitvoerende Beampte van die akademiese hospitaal om die navorsing daar uit te voer. Die navorsings populasie (N) was die dokumentasie (lêers) van die pasiente wat opgeneem is in die intensiewesorg eenheid tussen 1 Julie 2008 en 31 Desember 2008. ‘n Gestratifieerde steekproef is getrek bestaande uit 151 lêers. Die navorser het die data persoonlik kollekteer deur gebruik te maak van ‘n voortoets oudit instrument. Die betroubaarheid en geldigheid is verseker deur kundiges in verpleegkunde en intensiewesorg verpleging, asook ‘n statistikus en ‘n navorsingsmetodoloog. ‘n Loodstudie is gedoen om die instrument vooraf te toets en om die uitvoerbaarheid van die navorsing te bepaal. Veranderinge is aangebring op grond van die voorstelle van die kundiges sowel as die bevindinge van die loodstudie. Data analise het ingesluit die statistiese assosiasies tussen veranderlikes deur gebruik te maak van die Chi-kwadraat toets tot ‘n 95% sekerheidsvlak. Data is aangebied in die vorm van figure, tabelle en frekwensies. Die bevindinge van die studie wys dat die verpleegdokumentasie in die intensiewesorg eenheid is onvoldoende met die volgende gemiddelde telling: • Beraming 62.6% • Verpleegdiagnose 53.1% • Verpleegsorgplanne 37.1% • Implementering 72.6% • Evaluering 40.5% Ten slotte, verpleegdokumentasie van pasiënte wat tot die intensiewesorg eenheid toegelaat is, is onvoldoende gedurende die eerste 48 uur van toelating. Swak dokumentasie bedreig die veiligheid van pasiënte en verg dringende verbetering. Aanbevelings om die dokumentasie te verbeter sluit in toesig oor verpleegpraktyke kwaliteit verbeteringsprogramme, indiensopleiding, bewysgebaseerde praktyke en verdere navorsing.

Thesis (MCur)--University of Stellenbosch, 2011. / ENGLISH ABSTRACT: Agency-nursing work refers to nursing services provided by agency nurses employed on a casual, contracted basis. Agency-nursing has become more common in nursing practice in South Africa. This group of nurses play a significant role within the health care industry for both public and private sector. Given the pivotal role that nurses play in caring for the health of others, it is important to understand what motivates agency nurses in terms of job satisfaction. The aim of the study was to explore the perceptions of agency nurses regarding job satisfaction within critical care units in private health care institutions in the Western Cape. A qualitative research design with a phenomenological approach was applied. A sample size of n=10 was drawn from a total population of N=553, using random sampling technique. A semi-structured interview guide was designed based on the objectives of the study and validated by experts in the field before data collection. Ethical approval for the study was obtained from the Ethics Committee at the Faculty of Health Sciences, University of Stellenbosch. Permission to conduct the research was obtained from the participating nursing agency and consent was given in writing. The presentation of the results was categorised into themes and sub-themes emerged from the data analysis. The five clusters of themes that emerged were reasons for doing agency work, experiences with hospital staff, allocation of agency nurses, communication of information and staff development. The findings support Herzberg’s theory on motivation factors in terms of what motivates workers to excel in their performance. Agency nurses experienced both positive and negative aspects with regards to job satisfaction. The results of the study suggest the need to include revision and implementation of human resource policies and practices to include the nurses’ “voice” in an effort to provide a more supportive work environment. Further research is recommended. Key Words: Agency nurse, nursing agency, job satisfaction. / AFRIKAANSE OPSOMMING: Agentskapverplegingswerk verwys na verplegingsdienste wat voorsien word deur agentskapverpleegsters wat op ’n tydelike, gekontrakteerde basis in diens geneem word. Agentskapverpleging het meer algemene gebruik in die verpleegpraktyk in Suid-Afrika geword. Hierdie groep verpleegsters speel ’n belangrike rol in die gesondheidsbedryf vir beide die openbare en die private sektor. Gegee die deurslaggewende rol wat verpleegsters speel in die gesondheidsversorging van ander mense, is dit belangrik om te verstaan wat agentskapverpleegsters motiveer vanuit die oogpunt van werksbevrediging. Die doel van die studie was om die persepsies en ervarings van agentskapverpleegsters ten opsigte van werksbevrediging te ondersoek binne die waakeenhede in private gesondheidsorg-inrigtings in die Wes-Kaap. ’n Kwalitatiewe navorsingsontwerp met ’n fenomenologiese benadering is toegepas. ’n Monstergrootte van n=10 is geneem uit ’n populasie van N= 553 deur die ewekansige steekproeftegniek te gebruik. ’n Semi-gestruktureerde onderhoudgids was ontwerp en gebaseer op die doelwitte van die studie en was deur deskundiges op hierdie gebied, voor die insameling van data, gelding verklaar. Etiese goedkeuring vir die studie was verkry van die Etiese Komitee van die Fakulteit van Gesondheidswetenskappe, Stellenbosch Universiteit. Goedkeuring om die navorsing te doen, was verkry van die deelnemende agentskap en toestemming was op skrif geplaas. Die voorgelegde resultate was gekategoriseer in temas en subtemas wat uit die data-analise voortgespruit het. Die vyf groepe van temas wat hieruit gespruit het, is redes vir die keuse om agentskapwerk te doen, ervarings met hospitaalpersoneel, die toewysing van agentskapverpleegsters, kommunikasie van inligting en personeelontwikkeling. Die bevindinge het onthul dat Herzberg se teorie oor motiveringsfaktore werkers aangemoedig het om te presteer in die uitvoering van hulle pligte. Werksbevrediging is volgehou deur die agentskapverpleegster. Die bevindings dui op die behoefte om die hersiening en implementering van menslike hulpbronbeleidsverklarings en -praktyke in te sluit sodat die verpleegster se stem gehoor kan word in ’n poging om ’n meer ondersteunende werkomgewing te voorsien. Verdere navorsing word aanbeveel. Sleutelwoorde: Agentskapverpleegster, verplegingsagentskap, werksbevrediging.

Thesis (MScPhysio(Interdisciplinary Health Sciences. Physiotherapy))--University of Stellenbosch, 2005. / Objectives: This study forms part of a baseline study conducted on patients admitted to an adult surgical ICU between June and October 2003. The survival rate and health related quality of life (HRQoL) of patients 12months following ICU discharge was determined. The correlation of selected demographic and ICU variables to survival and HRQoL was determined. Design: Prospective observational cohort study. Setting: Tenbed closed public tertiary adult surgical ICU. Patients: 180 subjects obtained from a previous baseline study. Measurements: The baseline study provided the demographic data and ICU variables. Survival rate was determined from a Kaplan Meier survival curve. A self-developed questionnaire was used to obtain other selected variables for comparison. A modified Short-Form 36 version 2 (SF-36v2) was use to measure HRQoL perceptions of patients. Results: The survival rate was 62% at 12 months following ICU admission. None of the selected variables were significantly correlated to the long-term survival outcome except for APACHE II which was negatively correlated to this outcome (p<0.01). Forty-six subjects took part in the HRQoL study. The mean HRQoL scores ranged between 43% and 53% for each of the SF-36 HRQoL domains. The physical functioning (43.5%), role play (44.5%) and role emotion (43.1%) domains had the lowest scores. APACHE II had a significantly negative correlation to the physical functioning domain of HRQoL (p=0.02). Age was positively correlated to social functioning (p<0.01) and role emotion (p=0.03). Patients employed after ICU had significantly higher scores for general health (p<0.01) than those who were not. Patients unsure of their TB status and HIV status had significantly lower scores in general health (p=0.02) and role emotion (p=0.05) respectively. ICU length of stay was negatively correlated to role play (p=0.05) and role emotion (p<0.01). Intubation period was negatively correlated to general health (p=0.04). Conclusion: APACHE II was the only variable significantly correlated to both long-term survival and the physical functioning domain of HRQoL. Although the long-term survival was comparable to that of international ICU populations the HRQoL outcomes were slightly lower. Similar to international studies and a South African study evaluating the HRQoL of aids sufferers and police, the current ICU population presented more limitation in the physical functioning, role play and role emotion domains of HRQoL.

Bibliography / Thesis (PhD ( Interdisciplinary Health))--University of Stellenbosch, 2010. / Bibliography / ENGLISH ABSTRACT: Introduction: It is increasingly being recognized that how intensive care services are delivered may have a greater impact on patient outcome than the individual therapies. Uncertainty regarding the optimal physiotherapy service provision model in a surgical intensive care unit (ICU) exists. Methodology: The aims of this study were to 1) develop an evidence-based physiotherapy protocol; 2) validate the content of the protocol; and 3) conduct an explorative intervention trial to compare usual care to the estimated effects of providing a physiotherapy service guided by an evidence-based physiotherapy protocol by a dedicated physiotherapist. A systematic review process was used to synthesize the evidence in eight subject areas. The GRADE system was used to formulate best practice recommendations and algorithm statements. Forty-two experts from a variety of disciplines were invited to participate in a Delphi process. Finally, the evidence-based physiotherapy protocol was implemented in a surgical ICU over four three-week intervention periods by a group of research therapists. The outcomes measured included ventilator time, ventilation proportions, failed extubation proportions, length of ICU and hospital stay, mortality, functional capacity, functional ability and cost (using nursing workload as proxy). Results: Fifty-three research reports in eight subject areas were identified, 23 draft best-practice recommendations and 198 algorithm statements were formulated. The draft protocol consisted of five clinical management algorithms. Fifteen international research experts and twelve national academics in the field of critical care agreed to participate in the Delphi process. Consensus was reached on the formulation of 87% (20/23) recommendations and the rating of 66% (130/198) statements. The risk of an adverse event during the protocol care intervention period was 6:1000 treatment sessions (p=0.34). Patients admitted to the unit during the protocol care intervention period were less likely to be intubated (RR 0.16 95%CI 0.07 – 0.71; RRR 0.84 NNT 5.02; p=0.005) or fail extubation (RR 0.23 95%CI 0.05 – 0.98; RRR =0.77 NNT 6.95; p=0.04). The mean difference in the daily unit TISS-28 score between the two condition periods was 1.99 95%CI 0.65 – 3.35 (p=0.04). Patients managed by the protocol tended to remain in the hospital for a shorter time after unit discharge (p=0.05). There was no difference in the time spent on the ventilator (p=0.50), mortality (p=0.52) or in the six minute walk distance (p=0.65). In addition there was no difference in the proportion of patients who reached independence in any of the Barthel Index activities measured within 48 hours of discharge from the unit. Conclusions: The use of an evidence-based physiotherapy protocol for the comprehensive physiotherapeutic management of patients in a surgical ICU was feasible and safe. The preliminary results of this study suggest that a physiotherapy service, which is guided by an evidence-based protocol and offered by a dedicated unit therapist, has the potential to lower the cost of ICU care and facilitate the functional recovery of patients after unit discharge. This information can now be considered by administrators to optimize the physiotherapy service provided in ICU. / AFRIKAANSE OPSOMMING: Inleiding: Daar word toenemend erken dat die wyse waarop dienste gelewer word, ‘n groter impak mag hê op die uitkoms van pasiënte as die spesifieke modaliteite in gebruik. Onsekerheid heers tans oor die optimale fisioterapie diens model om te volg in ‘n chirurgiese intensiewe sorg eenheid (ISE). Metodologie: The doel van hierdie projek was om 1) ‘n bewysgesteunde protokol te ontwikkel; 2) die geldigheid van die protokol te bevestig; en 3) om deur middel van ‘n eksploratiewe studie die uitkoms van pasiënte te vergelyk wanneer die fisioterapie diens gelewer word aan die hand van die bewysgesteunde protokol deur ‘n toegewyde fisioterapeut, teenoor wanneer die gewone fisioterapie diens gelewer word. Die empiriese bewyse in agt onderwerp areas is gesintetiseer na afloop van ‘n sistematiese literatuur oorsig proses. Die GRADE sisteem is gebruik om beste praktyk aanbevelings en algoritme stellings te formuleer. Twee en veertig kundige persone van verskeie disiplines is genooi om deel te neem aan die Delphi proses om die geldigheid van die protokol te bevestig. Uiteindelik is die geldige bewysgesteunde protokol oor ‘n tydperk van vier drie weke intervensie periodes deur ‘n groep navorsings terapeute in ‘n chirurgiese ISE geïmplementeer. Die tyd wat pasiënte geventileer is, die proporsie pasiënte wat geïntubeer en geherintubeer is in die tydperk, die lengte van ISE en hospitaal verblyf, mortaliteit, funksionele kapasiteit asook funksionele vaardigheid en koste (deur die verpleeg werkslading te gebruik as ‘n indikasie van koste) is gemeet. Resultate: Drie en vyftig navorsings verslae in agt onderwerp areas is geïdentifiseer, 23 konsep aanbevelings en 198 algoritme stellings is geformuleer. Die konsep protokol het uit vyf algoritmes bestaan. Vyftien internasionale en twaalf nasionale kundiges het die uitnodiging aanvaar om aan die delphi proses deel te neem. Konsensus is bereik vir die formulering van 87% (20/23) van die aanbevelings en die gradering van 66% (130/198) van die algoritme stellings. Die risiko vir ‘n ongunstige episode tydens die protokol intervensie periode was 6:1000 sessies (p=0.34). Pasiënte wat tydens die protokol intervensie periode tot die eenheid toegelaat is was minder geneig om geïntubeer te word (RR 0.16 95%CI 0.07 – 0.71; RRR 0.84 NNT 5.02; p=0.005) of om ‘n ekstubasie te faal (RR 0.23 95%CI 0.05 – 0.98; RRR =0.77 NNT 6.95; p=0.04). Die gemiddelde verskil in die daaglikse eenheid TISS-28 telling tussen die twee intervensie periodes was 1.99 95%CI 0.65 – 3.35 (p=0.04). Patiente wat tydens die protokol intervensie periode behandel is was geneig om vinniger uit die hospitaal ontslaan te word nadat hul uit die eenheid ontslaan is (p=0.05). Daar was geen verskil in die ventilasie tyd, (p=0.50) die mortaliteit (p=0.52) of die afstand wat pasiente in ses minute kon aflê binne 48 uur na ontslag uit die eenheid (p=0.65) nie. Daar was ook geen verskil in die proporsie pasiente wat onafhanklikheid bereik het in enige van die kategorieë van die Barthell Index instrument nie. Gevolgtrekking: Die gebruik van die protokol vir die omvattende hantering van pasiënte in ‘n chirurgiese eenheid is haalbaar en veilig. Die voorlopige resultate van hierdie studie dui daarop dat wanneer ‘n fisioterapie diens in ‘n chirurgiese ISE gelewer word aan die hand van ‘n bewysgesteunde protokol deur ‘n toegewyde fisioterapeut dit die potensiaal het om ISE koste te verminder en die funksionele herstel van pasiente na ontslag uit die eenheid te fasiliteer. Hierdie inligting kan nou deur administrateurs oorweeg word om ‘n optimale fisioterapie diens in ‘n chirurgiese ISE te verseker.

Ένα από τα εργαλεία της χρηματοοικονομικής διαχείρισης είναι και η ανάλυση των ισολογισμών των επιχειρήσεων με αριθμοδείκτες για την λήψη αποφάσεων. Σκοπός της διπλωματικής εργασίας είναι η αποτύπωση μιας ολοκληρωμένης εικόνας για την οικονομική θέση των εταιρειών του κλάδου ιδιωτικών μονάδων υγείας το χρονικό διάστημα 2007-2011 αξιοποιώντας τους αριθμοδείκτες από τους δημοσιευμένους ισολογισμούς των εξεταζόμενων επιχειρήσεων. / -

<p>Today’s electrical transmission & distribution systems, are facing a number of challenges related to changing environmental, technical and business factors. Among these factors are, increased environmental restrictions leading to higher share of production from renewable and uncontrollable sources as well as local environmental concerns regarding construction of new transmission and distribution lines. The re-regulation of the electricity market has created a dynamic environment in which multiple organizations have to coordinate and cooperate in the operation and control of the power system. Finally, the high rate of devel-opment within the ICT field is creating many new opportunities for power system opera-tion and control, thanks to introduction of new technologies for measurement, communi-cation and automation.</p><p>As a result of these factors, Wide Area Monitoring and Control (WAMC) systems have been proposed. WAMC systems utilize new ICT based technologies to offer more accurate and timely data on the state of the power system. WAMC systems utilize Phasor Measure-ment Units (PMUs) that have higher data rates and are time synchronised using, GPS satel-lites. This allows synchronized observation of the dynamics of the power system, making it possible to manage the system at a more efficient and responsive level and apply wide area control and protection schemes. The success WAMC systems, on the other hand, are largely dependent on the performance of the Information and Communication Technology (ICT) infrastructure that would support them.</p><p>This thesis investigates the requirements on, and suitability of the ICT systems that support WAMC systems. This was done by identifying WAMC applications and the elicitation of their requirements. Furthermore, a set of simulation projects were carried out to determine the communication system characteristics such as delay and the impact of this delay on the WAMC system.</p><p>This thesis has several contributions. First, it provides summary and analysis of WAMC application priorities and requirements in the Nordic region. Secondly it provides simula-tion based comparison and evaluation of communication paradigms for WAMC systems. The research documented in this thesis addresses these paradigms by providing a compari-son and evaluation through simulation. Thirdly, the thesis provides insight to the possible sources of delay in WAMC architecture and the impact of these delays on data quality specifically data incompleteness. This provides insight on what applications are important to practitioners and what is the expected performance of these applications, as seen from the power system control and operation point of view.</p>

<p>Archaeology in Bolivia has two strong tendencies: nationalism and regionalism. The proposal aims for an academic reconstruction and expansion of this science in order to develop new scientific criteria, that can be institutionalized and become normative to the whole country to cover the expectations of different regions with regard to its past.</p><p>A fundamental aspect of providing Bolivian archaeological research with new perspectives is the study of formation and development of Andean central places of historic, infrastructural and ritual importance, such Huari, Quillacas, Sevaruyo, Pampa Aullagas and San Miguel de Uruquilla. Research conducted in the south basin of the Lake Poopo identifies evidence of early settlement in Huari towards the Late Archaic period (approximately 4000 to 2000 BC) and the Formative (2000 BC to AD 300), when the first villages were established. This indicates that the formation of agricultural towns was produced by consolidation of multiethnic central places that first consisted of ayllus, socio-dynamic units that gathered together settlers from different regions that simultaneously formed an ample network of centres interconnecting the Andean complex geography, interweaving their cultural diversity owing to the common ideology of Tiwanaku. Routes and llama caravans (llama trekking) integrated this network of central places.</p><p>As indicated by surveys and excavations, convergence of groups from different regions has been recognized in rests of material culture as shown in the ceramic distribution: Local Tiwanaku, Tiwanaku from Cochabamba, Yura, Huruquilla, Puqui, Mojocoya and remains of festivities at the centres during redistribution ceremonies, as well as ritual offers during the Early Regional Development period (300 to AD 900). This dynamic and preponderant ideology was completely transformed during Late Regional Developments (900 to AD 1460) when a series of regional conflicts determined the formation of the regional confederation known as Quillacas- Azanaques. At the time of the Inka Conquest (1460– AD 1530), the Lake Poopo basin was integrated into the Tawantinsuyo region through the implementation of the Royal Road and construction of Paria, Quillacas, San Miguel de Uruquilla and the Sevaruyo lodgings.</p><p>During the Colonial (1530 - 1825) and Republican periods (1825 - ), the Spaniards made changes that imply a deterioration of the socio-political structures of the ayllus, its territorial fragmentation and creation of new reductions for mining operations.</p><p>Recent archaeological research supports the proposition that populated centres in the Andean region of Bolivia were adapted to take advantage of the ecological variability through the social construction of the ayllu and the markas, centres that maintain dynamics, fluctuants and confluence in productive and ritual places.</p>

This dissertation investigates the application of list-mode data to detection, estimation, and image reconstruction problems, with an emphasis on emission tomography in medical imaging. We begin by introducing a theoretical framework for list-mode data and we use it to define two observers that operate on list-mode data. These observers are applied to the problem of detecting a signal~(known in shape and location) buried in a random lumpy background. We then consider maximum-likelihood methods for the estimation of numerical parameters from list-mode data, and we characterize the performance of these estimators via the so-called Fisher information matrix. Reconstruction from PET list-mode data is then considered. In a process we called "double maximum-likelihood" reconstruction, we consider a simple PET imaging system and we use maximum-likelihood methods to first estimate a parameter vector for each pair of gamma-ray photons that is detected by the hardware. The collection of these parameter vectors forms a list, which is then fed to another maximum-likelihood algorithm for volumetric reconstruction over a grid of voxels. Efficient parallel implementation of the algorithms discussed above is then presented. In this work, we take advantage of two low-cost, mass-produced computing platforms that have recently appeared on the market, and we provide some details on implementing our algorithms on these devices. We conclude this dissertation work by elaborating on a possible application of list-mode data to X-ray digital mammography. We argue that today's CMOS detectors and computing platforms have become fast enough to make X-ray digital mammography list-mode data acquisition and processing feasible.

<p>The Bredasdorp Basin is one of the largest hydrocarbon producing blocks within Southern Africa. The E-M field is situated approximate 50 km west from the FA platform and was brought into commission due to the potential hydrocarbons it may hold. If this field is brought up to full producing capability it will extend the lifespan of the refining station in Mosselbay, situated on the south coast of South Africa, by approximately 8 to 10 years. An unexpected pressure drop within the E-M field caused the suite not to perform optimally and thus further analysis was imminent to assess and alleviate the predicament. The first step within the project was to determine what might have cause the pressure drop and thus we had to go back to cores drilled by Soekor now known as Petroleum South Africa, in the early 1980&rsquo / s.</p> <p><br> <br /> </br>Analyses of the cores exposed a high presence of granulation seams. The granulation seams were mainly subjected within sand units within the cores. This was caused by rolling of sand grains over one another rearranging themselves due to pressure exerted through compaction and faulting, creating seal like fractures within the sand. These fractures caused these sand units to compartmentalize and prohibit flow from one on block to the next. With advance inquiry it was discovered that there was a shale unit situated within the reservoir dividing the reservoir into two main compartments. At this point it was determined to use Petrel which is windows based software for 3D visualization with a user interface based on the Windows Microsoft standards. This is easy as well as user friendly software thus the choice to go with it. The software uses shared earth modeling tool bringing about reservoir disciplines trough common data modelling. This is one of the best modelling applications in the available and it was for this reason that it was chosen to apply within the given aspects of the project A lack of data was available to model the granulation seams but with the data acquired during the core analyses it was possible to model the shale unit and factor in the influences of the granulation seams to asses the extent of compartmentalization. The core revealed a thick shale layer dividing the reservoir within two sections which was not previously noted. This shale layer act as a buffer/barrier restricting flow from the bottom to the top halve of the reservoir. This layer is thickest at the crest of the 10km&sup2 / domal closure and thins toward the confines of the E-M suite. Small incisions, visible within the 3 dimensional models could serve as a guide for possible re-entry points for future drilling. These incisions which were formed through Lowstand and Highstand systems tracts with the rise and fall of the sea level. The Bredasdorp Basin consists mainly of tilting half graben structures that formed through rifting with the break-up of Gondwanaland. The model also revealed that these faults segregate the reservoir further creating bigger compartments. The reservoir is highly compartmentalized which will explain the pressure loss within the E-M suite. The production well was drilled within one of these compartments and when the confining pressure was relieved the pressure dropped and the production decrease. As recommendation, additional wells are required to appraise the E-M structure and determine to what extent the granulation seems has affected fluid flow as well as the degree of sedimentation that could impede fluid flow. There are areas still containing untapped resources thus the recommendation for extra wells.</p>