The advancement of the waste resource optimization and scenario evaluation model: the inclusion of socio-economic and instituitonal indicator.

Masters Degree. University of KwaZulu-Natal, Durban.This study explored Novice Teacher Educators (NTEs) experiences of Relational Learning in a private Higher Education Institution (HEI) in South Africa. The main purpose of this study was to gain a deeper understanding of how NTEs involved in initial teacher education experience Relational Learning in a private HEI. It further attempted to gain an insight of how these experiences of Relational Learning influenced their learning as teacher educators and their work as NTEs in a private HEI context. Literature used in this research highlighted the need to develop competent NTEs due to the increase demand for access into higher education institutions, public and private, the limited structured induction and mentoring for NTEs and the limited research on the relational experiences of NTEs. Key debates on national and international higher education contexts were also foregrounded. The literature review also focused on understanding the phenomenon of Relational Learning as a progressive approach to learning, through and about relationships. Relational Learning is viewed as a catalyst for learning with others. Situated Learning Theory (SLT) and Relational Cultural Theory (RCT) was employed as the theoretical framework for the study. The study focuses on six NTEs who are newly appointed teacher educators in their first three years of employment primarily involved in the teaching of pre-service teachers (or student teachers) in a private HEI's as research context. The NTE participants moved from a school context into a HE context. This research study is a qualitative interpretive case study. All six NTEs that participated in this research were purposively selected by the researcher. Criteria used to select participants included NTE being in their first three years of their higher education careers and being able to access technologically devices. A qualitative approach was used to generate data and the data generation instruments used were questionnaires, individual semi structured interviews and a collage with presentation. The data generation process took three months and data generated was validated for authenticity by each participant by member checking. The findings of the data revealed that NTEs experienced many challenges in their first few months of being NTEs and considered this to be an exceptionally overwhelming shift. To overcome these difficult times NTEs moved to develop relationship with colleagues and more than often self-selected their mentors to guide and assist them as there was limited structured and mentoring with the institution. The relationship developed between NTE and self-selected mentor is a growth fostering relationships as foregrounded in Relational Cultural Theory. The xiii. findings of this research showed that mutual relationships between NTEs and teacher educators paved the way for NTE to become active members of communities of practice (COP). The responsibilities of HEIs is to provide relational opportunities for NTEs so they may ease into the profession. Relational opportunities such a mentoring, inductions, conversations and social activities to name a few have a fundamental role to play in enculturating a NTEs into HEI. Relational Learning has a pivotal role to play in the growth and development of NTEs thus improving the quality of teacher educatio

Detecting vulnerabilities in smart contract within blockchain: a review and comparative analysis of key approaches

Blockchain technology was created with security in mind. However, in recent years, there has been various confirmed cases of breach, worth billions of dollars loss in Blockchain associated to smart contracts. In order to address this growing concern, it is crucial to investigate detection and mitigation of vulnerabilities in smart contract, and this paper critically reviews and analyses key approaches for detecting vulnerabilities in smart contract within Blockchain. In order to achieve the purpose of this paper, five key approaches, notably the application of OWASP Top 10, SCSVS, vulnerability detection tools, fuzz testing and the AI-driven approaches are critically reviewed and compared. As part of the comparison performed, a penetration testing quality model was applied to study six quality metrics, notably extensibility, maintainability, domain coverage, usability, availability and reliability. Results revealed limitations of the studied vulnerability detection approaches and findings are expected to help in decision making especially when selecting approaches to be used during security analysis and pen-testing

Bacterial Sepsis in Brazilian Children: A Trend Analysis from 1992 to 2006

BACKGROUND: The objective of this study was to determine the epidemiology of hospitalized pediatric sepsis in Brazil (1992–2006) and to compare mortality caused by sepsis to that caused by other major childhood diseases. METHODS AND FINDINGS: We performed a retrospective descriptive study of hospital admissions using a government database of all hospital affiliated with the Brazilian health system. We studied all hospitalizations in children from 28 days through 19 years with diagnosis of bacterial sepsis defined by the criteria of the International Classification of Diseases (ICD), (Appendix S1). Based on the data studied from 1992 through 2006, the pediatric hospital mortality rate was 1.23% and there were 556,073 pediatric admissions with bacterial sepsis with a mean mortality rate of 19.9%. There was a case reduction of 67% over.1992–2006 (p<0.001); however, the mortality rate remained unchanged (from 1992–1996, 20.5%; and from 2002–2006, 19.7%). Sepsis-hospital mortality rate was substantially higher than pneumonia (0.5%), HIV (3.3%), diarrhea (0.3%), undernutrition (2.3%), malaria (0.2%) and measles (0.7%). The human development index (HDI) and mortality rates (MR) by region were: North region 0.76 and 21.7%; Northeast region 0.72 and 27.1%; Central-West 0.81 and 23.5%; South region 0.83 and 12.2% and Southeast region 0.82 and 14.8%, respectively. CONCLUSIONS: We concluded that sepsis remains an important health problem in children in Brazil. The institution of universal primary care programs has been associated with substantially reduced sepsis incidence and therefore deaths; however, hospital mortality rates in children with sepsis remain unchanged. Implementation of additional health initiatives to reduce sepsis mortality in hospitalized patients could have great impact on childhood mortality rates in Brazil

Rolling back malaria in Africa – challenges and opportunities to winning the elimination battle.

A high-level review was conducted of the literature pertaining to the challenges and opportunities for eliminating malaria on the African continent. Although malaria mortality and morbidity are on the decline, the disease remains one of public health importance. Africa has invariably borne the brunt of the disease, recording the highest number of cases and deaths. However, with greater emphasis being placed on the disease by the international community, partnerships have developed to boost malaria elimination efforts on the continent. One such initiative is the Roll Back Malaria (RBM) partnership which aims to facilitate malaria elimination through increasing resources and awareness. Many cross-border initiatives have been established which treat malaria as a regional problem rather than a country-specific one. Accelerated malaria control efforts have led to a 37% decrease in cases and 60% reduction in deaths. Multi-country efforts have resulted in marked reductions of transmission in the region. Although there have been noteworthy gains in curtailing the disease, new challenges have arisen. The main among these are residual malaria and outdoor biting. One of the main drivers of residual malaria is insecticide resistance. Adding to the burden of residual transmission is the discovery of new vectors that may exist at low densities. To exacerbate these issues is the challenge of malaria imported from high- to low-transmission areas. Nevertheless, compared with the historical picture, we are winning the battle against malaria. Countries in Africa are being certified malaria-free. Partnerships have been developed to take forward the RBM Global Malaria Action Plan. Elimination agendas can only be successful if funding remains sustainable, with greater reliance on domestic funding

Prevalence and antimicrobial susceptibility pattern of methicillin resistant Staphylococcus aureus isolates from Trinidad & Tobago

BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) has become increasingly prevalent worldwide since it was first reported in a British hospital. The prevalence however, varies markedly in hospitals in the same country, and from one country to another. We therefore sought to document comprehensively the prevalence and antimicrobial susceptibility pattern of MRSA isolates in Trinidad and Tobago. METHODS: All Staphylococcus aureus isolates encountered in routine clinical specimens received at major hospitals in the country between 2000 and 2001 were identified morphologically and biochemically by standard laboratory procedures including latex agglutination test (Staphaurex Plus; Murex Diagnostics Ltd; Dartford, England); tube coagulase test with rabbit plasma (Becton, Dickinson & Co; Sparks, MD, USA), and DNase test using DNase agar (Oxoid Ltd; Basingstoke, Hampshire, England). MRSA screening was performed using Mueller-Hinton agar containing 6 μg oxacillin and 4% NaCl, latex agglutination test (Denka Seiken Co. Ltd, Tokyo, Japan) and E-test system (AB Biodisk, Solna, Sweden). Susceptibility to antimicrobial agents was determined by the modified Kirby Bauer disc diffusion method while methicillin MICs were determined with E-test system. RESULTS: Of 1,912 S. aureus isolates received, 12.8% were methicillin (oxacillin) resistant. Majority of the isolates were recovered from wound swabs (86.9%) and the least in urine (0.4%) specimens. Highest number of isolates was encountered in the surgical (62.3%) and the least from obstetrics and gynaecology (1.6%) facilities respectively. Large proportions of methicillin sensitive isolates are >85% sensitive to commonly used and available antimicrobials in the country. All MRSA isolates were resistant to ceftriaxone, erythromycin, gentamicin and penicillin but were 100% sensitive to vancomycin, rifampin and chloramphenicol. CONCLUSION: There is a progressive increase in MRSA prevalence in the country but the present rate is still low in comparison to values in some other countries. Vancomycin is still the drug of choice for treating multidrug resistant MRSA infections. Further use of molecular studies to monitor the epidemiology of MRSA in these hospitals in the country is highly recommended too