1,272 research outputs found
Berta Smit Collection index
No full textThis index describes the Berta Smit Collection and contains articles ; note books ; clippings ; manuscripts ; interviews ; radio talks ; book reviews ; speeches ; personalia.
Berta Smit (1926-1997) was a well-known author for books such as Juffrou Sophia vlug vorentoe, Die man met die kitaar, Die vrou en die bees etc. and literary figure. This collection consists of articles, manuscripts inter alia of 'Juffrou Sophia vlug vorentoe', note books, interviews, radio talks, speeches and book reviews. The collection is compiled into 13 pamphlet boxes
Vakmanschap van de Projectontwikkelaar?
No full textProjectontwikkelaars worden in de huidige markt stevig op de proef gesteld. Hans-Hugo Smit geeft zijn visie op het verleggen van de koers van aanbodgericht naar vraaggericht ontwikkelen en de rol van de ontwikkelaar daarbij
AMICO galaxy clusters in KiDS-DR3: The impact of estimator statistics on the luminosity-mass scaling relation
No full textContext. As modern-day precision cosmology aims for statistical uncertainties of the percent level or lower, it becomes increasingly important to reconsider estimator assumptions at each step of the process, along with their consequences on the statistical variability of the scientific results.
Aims. We compare L1 regression statistics to the weighted mean, the canonical L2 method based on Gaussian assumptions, to infer the weak gravitational shear signal from a catalog of background ellipticity measurements around a sample of clusters, which has been a standard step in the processes of many recent analyses.
Methods. We use the shape measurements of background sources around 6925 AMICO clusters detected in the KiDS third data release. We investigate the robustness of our results and the dependence of uncertainties on the signal-to-noise ratios of the background source detections. Using a halo model approach, we derive lensing masses from the estimated excess surface density profiles.
Results. The highly significant shear signal allows us to study the scaling relation between the r-band cluster luminosity, L200, and the derived lensing mass, M200. We show the results of the scaling relations derived in 13 bins in L200, with a tightly constrained power-law slope of ∼1.24 ± 0.08. We observe a small, but significant, relative bias of a few percent in the recovered excess surface density profiles between the two regression methods, which translates to a 1σ difference in M200. The efficiency of L1 is at least that of the weighted mean and increases with higher signal-to-noise shape measurements.
Concluions. Our results indicate the relevance of optimizing the estimator for inferring the gravitational shear from a distribution of background ellipticities. The interpretation of measured relative biases can be gauged by deeper observations, and the increased computation times remain feasible
Design of a new Faculty of Architecture - Investigation and design of Media Facades
No full textGraduation Project [G.J. Smit] for both Architecture & Building Technology. [architecture] : design of a new Faculty of Architecture [building technology] : investigation and design of Media FacadesStrategic Architectural Design DevelopmentArchitecture & Building TechnologyArchitectur
SKION: Digitale Basiskaart - Eindverslag
No full textThis document gives an overview of the progress and achievements of R. Spliet and S. Smit during their internship at SKION, including all delivered documentation.IN3405 BachelorprojectComputer ScienceElectrical Engineering, Mathematics and Computer Scienc
State of the art of prosthesis simulators for the upper limb: A narrative review
No full textBackground: Research into prosthesis training and design puts a burden on the small population of people with upper-limb absence who can participate in these studies. One solution is to use a prosthetic hand simulator, which allows for attaching a hand prosthesis to an intact limb. However, whether the results of prosthesis simulator studies can be translated to people with upper-limb absence using a hand prosthesis is unclear. Objective: To review the literature on prosthetic hand simulators, provide an overview of current designs, and highlight the differences and similarities between prosthesis simulators and traditional prostheses. Methods: A Boolean combination of keywords was used to search 3 electronic databases: PubMed, Scopus and Web of Science. Relevant articles in English were selected. Results: In total, 52 papers were included in the review, and an overview of the state of the art was presented. We identified the key differences between prosthesis simulators and traditional prostheses as the position of the terminal device and the available degrees of freedom of the arm and (prosthetic) wrist. Conclusions: This paper provides an overview of prosthesis simulator designs over the past 27 years and an overview of the similarities and differences between prosthesis simulators and prostheses. The literature does not provide enough evidence to establish whether the results obtained from simulator studies could be translated to prostheses. A recommendation for future simulator design is to constrain pro- and supination of the forearm of anatomically intact participants and add a prosthetic wrist that can pro- and supinate. Additional research is required to find the ideal terminal device position for a prosthesis simulator with respect to the person's hand.Medical Instruments & Bio-Inspired Technolog
Eyelid problems in general practice
No full textCITATION: Smit, D. P. 2012. Eyelid problems in general practice. South African Family Practice, 54(3):214-220.The original publication is available at http://www.safpj.co.zaGeneral practitioners are often confronted with complaints regarding the eyelids. The author presents a number of clinical cases that illustrate common eyelid problems, and provides a discussion of each case to highlight the important features of the condition. Appropriate treatment for each condition is also covered. Many eyelid conditions are amenable to treatment from general practitioners, but those conditions requiring specialist management need to be identified, and referred appropriately.http://www.safpj.co.za/index.php/safpj/article/view/1755Publisher's versio
Managing Risks in Electrical Infrastructure Assets from a Strategic Perspective
No full textShould risks always be quantified before being managed? The answer is “yes” in the opinion of most asset managers in today’s electricity transmission and distribution companies, but “no” in modern theories of risk management. When the risks refer to reliability hazards of high-voltage assets, the answer to the above question is “yes, it should be, but not yet”. The first part of this thesis studies a typical cause of this situation: when data and knowledge on high-voltage assets are insufficient. Specifically, statistical methods were developed for analyzing life data of limit quantity and poor quality. For other types of data, the reliability data model and the knowledge maturity model were developed, as the tools to evaluate the progress towards risk-based asset management. When the risks on electrical infrastructure assets are long-term and stakeholder-oriented, the answer to the above question is probably “no”. In the second part of this thesis, these risks are modelled as “strategic risks”. Through adapting the theory of Klinke and Renn, the author identifies six types of strategic risks. Then, through developing our version of system diagram, the author provides asset managers with an analytical tool to manage the complexities and uncertainties caused by these strategic risks.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
Circular Communities: The circular value flower as a design method for collectively closing resource flows
No full textIn Circular Communities, pioneering, collectively supported initiatives that are aimed at closing resource cycles at neighbourhood level take a central position. They are all examples of initiatives that contribute to the transition to a circular economy. For the analysis of these different circular initiatives, the researchers – urban designer Els Leclercq and architect Mo Smit - developed a unique method: the Circular Value Flower method. This method helps to organize the collective closing of resource cycles (bio and tech materials, energy, water and nutrients) on a neighbourhood scale and provides insight into the added value (social, ecological, aesthetic, cultural and economic) that can be realized within the built environment. Circular Communities offers inspiration and lessons for integral sustainable interventions at the scale of the neighbourhood and ties in with the new Dutch Environmental Planning Act, which explicitly offers room for citizen initiatives and local commissioning in the Netherlands.Design AestheticsArchitectural Technolog
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