ANALISIS PERBANDINGAN BIAYA MUTU DAN WAKTU ANTARA METODE PRECAST DAN CAST IN SITU PADA PEKERJAAN SALURAN

Drainase merupakan hal yang penting pada suatu bangunan konstruksi karena berfungsi untuk mengalirkan air permukaan ke badan air dan atau bangunan resapan sehingga tidak terjadi genangan pada bangunan konstruksi. Pada pekerjaan saluran terdapat dua metode yang biasa digunakan pada proyek konstruksi yaitu metode precast dan cast in situ. Proyek konstruksi sudah terbiasa dengan metode precast karena keuntungan yang diberikan berupa waktu pekerjaannya tidak lama. Beberapa proyek konstruksi menggunakan metode cast in situ pada pekerjaan saluran karena biaya yang di keluarkan cukup murah. Tujuan dari penelitian ini adalah untuk menganalisis perbandingan metode precast dan cast in situ pada pekerjaan saluran dari segi biaya waktu dan mutu serta memberikan saran metode yang efektif untuk diterapkan pada pekerjaan saluran. Data primer berupa informasi dari pekerja di proyek dan data sekunder berupa denah saluran serta schedule proyek. Dari data tersebut dilakukan analisis untuk mendapatkan jumlah biaya, durasi pekerjaan serta pengendalian mutu terhadap dua metode tersebut. Dari hasil analisis didapatkan bahwa pekerjaan saluran menggunakan metode cast in situ biaya yang dikeluarkan adalah Rp. 392.035.000 dengan durasi pekerjaan 480 hari dan perlunya pengawasan lebih dalam pengendalian mutu karena proses setiap pekerjaan dilakukan di proyek. Sedangkan hasil analisis pekerjaan saluran menggunakan metode precast biaya yang dikeluarkan Rp. 796.152.000 dengan durasi pekerjaan 140 hari dan pengendalian mutu yang lebih sederhana karena proses fabrikasi dilakukan di pabrik

Profile of, and challenges experienced by, stroke patients admitted at Haydom Lutheran hospital, Tanzania

Magister Scientiae (Physiotherapy) - MSc(Physio)Background and aim: Despite the high number of strokes globally, and among people of African origin in particular, there are few available data on stroke in most countries of sub-Saharan African (SSA), including Tanzania. In addition, the profile and challenges affecting stroke patients in these countries has not been adequately explored. The aim of this study was to determine the profile and explore the challenges experienced by stroke patients admitted at Haydom Lutheran Hospital in Tanzania. The objectives of the study were to determine the documented risk factors among the patients admitted to Haydom Lutheran Hospital, to identify the stroke on-set admission interval and length of hospital stay, to identify the process of physiotherapy for the stroke patients, and to explore the challenges experienced by stroke patients discharged from Haydom Lutheran Hospital, Tanzania. Methods: Qualitative and quantitative research designs were used to collect the data. The quantitative design used a retrospective descriptive study, in which medical records of stroke patients were reviewed. The qualitative approach included in-depth interviews to collect information regarding the challenges experienced by stroke patients residing in Haydom, Tanzania. Existing medical records were perused to obtain information related to demographic profile, medical characteristics and rehabilitation data among stroke patients admitted at Haydom Lutheran Hospital. Relevant data was captured on a data information sheet. The SPSS (14.0 version) and Microsoft Excel (2007) were used to analyse quantitative data. Descriptive Statistics were used to determine ranges, percentages, frequencies, means and standard deviations calculate. The qualitative interviews were transcribed verbatim and also translated from Kiswahili to English. Stated concepts were coded, grouped into categories, and reduced into sub-themes and main themes. Prior to conducting this study, final permission was obtained from the Senate Research Grant and Study Leave Committee at the University of the Western Cape as well as the relevant authorities of the Tanzania Ministry of Health, Tanzanian National Institute of Medical Research, and the Administration of Haydom Lutheran Hospital. Written informed consent were obtained from the participants prior to interviews. Results: A total number of 145 stroke patients were admitted to Haydom Hospital between 1st January 2004 and 31st December 2010. However, only 128 of the potential sample participants met the inclusion criteria for the sample. The mean age of the participants was 57.7years, (SD=18.673). Of these, 104 (81.2%) had haemorrhagic stroke and 24(18.7%) had ischemic strokes. HIV infection (78.1%), previous stroke (74.2%), smoking (58.5%) and hypertension (55.4%) were the most common risk factors for stroke. Among the participants, the documented impairments included emotional impairments 42(32.8%), speech impairment 47(36.7%), cognitive impairment 39(30.4%), muscle impairment 36(28.1%), and occurrence of coma 33(25.8%) respectively. The mean time from onset of stroke to admission was 1.2 days with (SD=0.42 days). The mean length of hospital stay was 12.16 days (SD=4.1 days), the majority (61.7%), started physiotherapy within 3 days after admission, mean duration of physiotherapy was 14.1 days (SD=5.79), and the mean number sessions of physiotherapy 3.7days (SD=18.8 days). The challenges that emerged during the qualitative interviews with participants were limitation in walking activities, inability to return to work and to participate in leisure activities as before the onset of stroke, and environmental factors such as physical barriers and attitude of family. Conclusion: The findings of the research reveal that stroke in Tanzanian patients occurs at a relatively young age, and that frequency of intra-cerebral haemorrhage is higher than that reported in developed countries. The clinical presentations and risk factors are similar to those in other studies. The qualitative findings revealed that the stroke patients had problems with limitation of activity, participation restrictions, and environmental challenges. They also expressed uncertainties as a result of a lack of knowledge about stroke and its effects, and discharge challenges relating to rehabilitation. These challenges should be addressed in the process of management of patients with stroke in the research setting

Provision of inpatient rehabilitation and challenges experienced with participation post discharge: quantitative and qualitative inquiry of African stroke patients

BACKGROUND: The provision of rehabilitation differs between developed and developing countries, this could impact on the outcomes of post stroke rehabilitation. The aim of this paper is to present provision of in-patient stroke rehabilitation. In addition the challenges experienced by the individuals with participation post discharge are also presented. METHODS: Qualitative and quantitative research methods were used to collect data. The quantitative data was collected using a retrospective survey of stroke patients admitted to hospitals over a three- to five-year period. Quantitative data was captured on a validated data capture sheet and analysed descriptively. The qualitative data was collected using interviews from a purposively and conveniently selected sample, audio-taped and analysed thematically. The qualitative data was presented within the participation model. RESULTS: A total of 168 medical folders were reviewed for a South African sample, 139 for a Rwandan sample and 145 for a Tanzanian sample. The mean age ranged from 62.6 (13.78) years in the South African sample to 56.0 (17.4) in the Rwandan sample. While a total of 98 % of South African stroke patients received physiotherapy, only 39.4 % of Rwandan patients received physiotherapy. From the qualitative interviews, it became clear that the stroke patients had participation restrictions. When conceptualised within the Participation Model participation restrictions experienced by the stroke patients were a lack of accomplishment, inability to engage in previous roles and a perception of having health problems. DISCUSSION: With the exception of Rwanda, stroke patients in the countries studied are admitted to settings early post stroke allowing for implementation of effective acute interventions. The participants were experiencing challenges which included a lack of transport and the physical geographic surroundings in the rural settings not being conducive to wheelchair use. CONCLUSION: Stroke patients admitted to hospitals in certain African countries could receive limited in-patient therapeutic interventions. With the exception of barriers in the physical environment, stroke patients in developing countries where resources are limited experience the same participation restrictions as their counterparts in developed countries where resources are more freely available. Rehabilitation interventions in these developing countries should therefore be community-based focussing on intervening in the physical environment.IS

The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance

INTRODUCTION Investment in Africa over the past year with regard to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sequencing has led to a massive increase in the number of sequences, which, to date, exceeds 100,000 sequences generated to track the pandemic on the continent. These sequences have profoundly affected how public health officials in Africa have navigated the COVID-19 pandemic. RATIONALE We demonstrate how the first 100,000 SARS-CoV-2 sequences from Africa have helped monitor the epidemic on the continent, how genomic surveillance expanded over the course of the pandemic, and how we adapted our sequencing methods to deal with an evolving virus. Finally, we also examine how viral lineages have spread across the continent in a phylogeographic framework to gain insights into the underlying temporal and spatial transmission dynamics for several variants of concern (VOCs). RESULTS Our results indicate that the number of countries in Africa that can sequence the virus within their own borders is growing and that this is coupled with a shorter turnaround time from the time of sampling to sequence submission. Ongoing evolution necessitated the continual updating of primer sets, and, as a result, eight primer sets were designed in tandem with viral evolution and used to ensure effective sequencing of the virus. The pandemic unfolded through multiple waves of infection that were each driven by distinct genetic lineages, with B.1-like ancestral strains associated with the first pandemic wave of infections in 2020. Successive waves on the continent were fueled by different VOCs, with Alpha and Beta cocirculating in distinct spatial patterns during the second wave and Delta and Omicron affecting the whole continent during the third and fourth waves, respectively. Phylogeographic reconstruction points toward distinct differences in viral importation and exportation patterns associated with the Alpha, Beta, Delta, and Omicron variants and subvariants, when considering both Africa versus the rest of the world and viral dissemination within the continent. Our epidemiological and phylogenetic inferences therefore underscore the heterogeneous nature of the pandemic on the continent and highlight key insights and challenges, for instance, recognizing the limitations of low testing proportions. We also highlight the early warning capacity that genomic surveillance in Africa has had for the rest of the world with the detection of new lineages and variants, the most recent being the characterization of various Omicron subvariants. CONCLUSION Sustained investment for diagnostics and genomic surveillance in Africa is needed as the virus continues to evolve. This is important not only to help combat SARS-CoV-2 on the continent but also because it can be used as a platform to help address the many emerging and reemerging infectious disease threats in Africa. In particular, capacity building for local sequencing within countries or within the continent should be prioritized because this is generally associated with shorter turnaround times, providing the most benefit to local public health authorities tasked with pandemic response and mitigation and allowing for the fastest reaction to localized outbreaks. These investments are crucial for pandemic preparedness and response and will serve the health of the continent well into the 21st century

Vision-Less Sensing for Autonomous Micro-Drones

This work presents a concept of intelligent vision-less micro-drones, which are motivated by flying animals such as insects, birds, and bats. The presented micro-drone (named BAT: Blind Autonomous Tiny-drone) can perform bio-inspired complex tasks without the use of cameras. The BAT uses LIDARs and self-emitted optical-flow in order to perform obstacle avoiding and maze-solving. The controlling algorithms were implemented on an onboard micro-controller, allowing the BAT to be fully autonomous. We further present a method for using the information collected by the drone to generate a detailed mapping of the environment. A complete model of the BAT was implemented and tested using several scenarios both in simulation and field experiments, in which it was able to explore and map complex building autonomously even in total darkness