15 research outputs found
City form as a strategy for city branding: a comparative study of Kandy and Galle
No full textCity branding concept is based on marketing the city’s history, culture, natural resources, architectural values, social opportunities and lifestyle. This research will investigate the impact of city form or the physical layout of a city as a city branding strategy with respect to two well-functioning cities; Kandy and Galle. Landscape architectural character is mainly expressed through the city form. The analysis was carried out through the experience of the residents, commuters and tourists of the city. The data was collected under two questionnaire surveys to determine the current brand of the city and to analyse the impact due to each of the selected city form elements landmarks, parks and streets. The positive and negative attributes of the selected spaces were further analysed to evaluate the extent of the impact. According to the findings, the impact generated by the landmarks were high when compared to the parks and streets. And the impact of city form was higher in Kandy than Galle. These findings emphasize the factors which affect the different levels of impact from the city form to the development, establishment and endurance of a city brand
Appraising indoor thermal perception of elderly in hot climates: An experimental investigation of free-running residential aged care homes in Colombo
No full textRapid demographic transition with higher growth in ageing population demonstrate a major societal challenge in South Asia and Sri Lankans will age faster than other developing economies in the region. Climate shocks of people living in economically deprived countries will increase in future and elders are more vulnerable to the adverse effects of temperature extremes. The study experimentally investigated free-running residential care homes in hot climate of Colombo performing simultaneous personal monitoring and questionnaire surveys. Results explicitly prove overheated indoors with less air flow. Majority of elders confirmed thermally unacceptable interiors with warm thermal sensations and low air velocities of 0.1 to 0.29 m/s with predominant preference of more air movement proves inadequate passive airflow. A significant relationship between wind preference and presence of openings of their place of stay were evident. Staying away from a window or door instigated to practice a behavioural adaptation of moving towards transitional areas such as corridors, verandas, and outdoor spaces for more wind sensation. Since ageing is associated with physical inabilities and elders spend their life mostly in indoors, findings emphasize the importance of enhancing passive airflow and application of appropriate design strategies to ensure optimum air velocities and dispersion of airflow within interiors
Storm op Zuid: Integratie Hollandse Delta in de Zuidvleugel
No full textMet als bijlage: A0 posterArchitectur
Liniepark, silhouet van de stad
No full textIn dit project is aan de hand van locatiespecifieke kenmerken een strategie opgesteld voor de ontwikkeling van het buitengebied tussen Utrecht, De Bilt, Zeist en Bunnik. Beleidsmatige opgaven als de Deltametropool en de Nieuwe Hollandse Waterlinie zijn het kader waarbinnen het project vorm heeft gekregen. Geprobeerd is om de verstedelijkingsdruk op te vangen en tegelijkertijd de verschillende kwaliteiten en de leesbaarheid van het waardevolle en complexe landschap te versterken. Door het nationale infranetwerk weg te denken zijn missing links in het onderliggende regionale netwerk ontdekt. Dit netwerk is gecompleteerd waardoor het bovenliggende netwerk wordt ontlast. Dit regionale netwerk zorgt in samenhang met een zwerfnetwerk voor de bereikbaarheid en de toegankelijkheid van Liniepark. In het gebied zijn vijf verschillende landschappelijke eenheden gedefinieerd. De eenheden zijn landschappelijke structuren zoals waterlopen en landgoederen met de bijbehorende gronden. Deze eenheden zijn verdeeld in domeinen. Domeinen zijn kavels die bestaan uit een landelijke functie (agrarisch/recreatief) in combinatie met een stedelijke functie (UMC, universiteit / wonen). Het regionale netwerk is met de landschappelijke eenheden geconfronteerd. Hierdoor is het mogelijk om te bepalen welke functie het best geschikt is voor een bepaald domein. Voor elk type domein zijn regels opgesteld, zowel voor de ruimtelijke als de strategische ontwikkeling. De ruimtelijke uitwerking van de domeinen bevordert de herkenbaarheid van de landschappelijke eenheid en daarmee de leesbaarheid van het landschap. De toekomst van een boerenbedrijf en daarmee van het cultuurlandschap kan veilig worden gesteld door een financieringsmodel waarbij binnen domein de stedelijke functie meebetaalt aan de landelijke functie. De belangrijkste nieuwe verbinding is de doorsteek van de Uithof naar Bunnik. Zo ontstaat Linie-as die centraal is gelegen in Liniepark. Deze as doorsnijdt de verschillende landschappelijke eenheden en heeft een belangrijke aansluiting op Bunnik-west, een hoogwaardige locatie voor stedelijke ontwikkeling. De profilering van de as past zich aan de verschillende gebieden aan. Liniepark, silhouet van de stad is een schaduwstad in het landschap, waar de waterlinie haar stempel op drukt. De regio Utrecht verandert zo langzaam van een centraal georieerde regio in een netwerkstad waarbij de ontwikkeling van stad en landschap hand in hand gaan.Architectur
My way, the highway
No full textMy graduation project consists of an analysis of the A1, which zooms in on Apeldoorn. Here a case study gives a solution to the changing highway landscape. Cities are crossing the highway edge looking for other boundaries. Panoramas are gone while cities are only seen as sound barriers or industrial sites. A design for the city Apeldoorn shows how to deal with new developments around this city. Different ingredients are tested, which can be used as a tool for other changing highway-surroundings.Architectur
Investigation on topology-optimized compressor piston by metal additive manufacturing technique: Analytical and numeric computational modeling using finite element analysis in ANSYS
No full textAir compressors are widely used in factories to power automation systems and store energy. Several studies have been conducted on the performance of reciprocating and screw compressors. Advancements in design and manufacturing techniques, such as generative design and topology optimization, are leading to improved performance and turbomachinery growth. This work presents a methodology to design and manufacture air compressor pistons using topology optimization and metal additive manufacturing. The existing piston is converted to 3D CAD data and topology optimization is conducted to reduce material in stress concentration regions. Thermal and mechanical loads are considered in boundary conditions. The results show reduced material and improved efficiency, which is validated using ANSYS fluent. The optimized 3D model of the piston is too complex for conventional subtractive manufacturing, so laser sintering 3D printing is proposed. Honeycomb pattern infill patterns are used in 3D printing. This investigation is a step toward researching similar methods in other reciprocating compressor components such as cylinder, cylinder head, piston pins, crankshaft, and connecting rods, which will ultimately lead to improved compressor efficiency. © 2023 the author(s), published by De Gruyter.Khon Kaen University, KKU: R.G.P.1/349/43; Deanship of Scientific Research, King Khalid UniversityFunding information: This research was funded by the Deanship of Scientific Research at King Khalid University (KKU) through the Research Group Program Under the Grant Number: (R.G.P.1/349/43).The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University (KKU) for funding this research through the Research Group Program Under the Grant Number: (R.G.P.1/349/43)
Adsorption study of N (-benzo[d]thiazol-2-yl)-1-(thiophene-2-yl) methanimine at mild steel/aqueous H2SO4 interface
No full textThis study reports microwave (MW) assisted synthesis of N (-benzo[d]thiazol-2-yl)-1-(thiophene-2-yl) methanimine (BTTM) in reasonably good yield and purity. The synthesized compound (BTTM) has been characterized by elemental analysis, IR and 1H NMR spectroscopy and examined for its corrosion inhibition activity for mild steel in aqueous H2SO4 medium using gravimetric and different electrochemical methods. The corrosion inhibition study was also performed at different temperatures to understand the effect of temperature on corrosion inhibiting potential of BTTM. The metal protecting ability of BTTM in acid solution was further examined by surface analyses; X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and contact angle measurement. The surface analyses reveal that the BTTM adsorbed on mild steel (MS) surface following ElAwady isotherm. Theoretical studies, viz. molecular orbital analysis and molecular dynamic (MD) modelling were also conducted to understand the inhibition mechanism completely.King Khalid University [11/1-349/2022/FIN -B/]; [R.G.P.2/224/43]Authors are thankful to their Institutions for providing platform to carry out this work. We are also thankful to our friends and colleagues who assisted this research work directly or indirectly. Author Manjeet Singh acknowledges the financial support received in the form of Research Promotion Grant MZU (11/1-349/2022/FIN -B/) to provide his contribution in this research. Authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding theoretical work of this study through research group under grant number R.G.P.2/224/43
Quantum size effects and grain-boundary scattering in polycrystalline cobalt disilicide films
No full textStructural and shielding properties of NiO/xCo3O4 nanocomposites synthesized by microwave irradiation method
No full textIn the present study, nanocomposites with different ratios of NiO and Co3O4 (x = 0.3, 0.5, and 0.7) have been prepared via microwave oven and characterized using XRD. FLUKA code has been used to estimate the values of the mass attenuation coefficient (μm) for all samples. From the measurement, we found that when the thickness of the samples increases, the gamma transmission values decrease. Besides, the μm values increase as the Co3O4 content increase from 0.3 to 0.7%. At selected photon energy, the HVL, TVL, and MFP values decrease with increasing Co3O4 concentrations. At low energies (0.1–0.5 MeV), the linear decreasing trend in MAC values indication that photoelectric effect (PEA) (∝1/E3.5) dominance over this region. Afterward, at medium energy regions (0.5–1.33 MeV), the decrements in MAC values are insignificant as the Compton scattering (CS) (∝1/E) phenomenon dominates. As a conclusion, CoNi3 has superior effectiveness as a shielding material. © 2020 The Author(s)The authors express their gratitude to the Deanship of Scientific Research at King Khalid University for funding this work through research groups program under grant number R.G.P. 2/33/41 and Universiti Putra Malaysia for the research and publication funding
MHD mixed convective stagnation point flow of nanofluid past a permeable stretching sheet with nanoparticles aggregation and thermal stratification
No full textUsing a thermally stratified water-based nanofluid and a permeable stretching sheet as a simulation environment, this research examines the impact of nanoparticle aggregation on MHD mixed convective stagnation point flow. Nanoparticle aggregation is studied using two modified models: the Krieger–Dougherty and the Maxwell–Bruggeman. The present problem's governing equations were transformed into a solvable mathematical model utilizing legitimate similarity transformations, and numerical solutions were then achieved using shooting with Runge–Kutta Fehlberg (RKF) technique in Mathematica. Equilibrium point flow toward permeable stretching surface is important for the extrusion process because it produces required heat and mass transfer patterns and identifies and clarifies fragmented flow phenomena using diagrams. Nanoparticle volume fraction was shown to have an impact on the solutions' existence range, as well. Alumina and copper nanofluids have better heat transfer properties than regular fluids. The skin friction coefficients and Nusselt number, velocity, temperature profiles for many values of the different parameters were obtained. In addition, the solutions were shown in graphs and tables, and they were explained in detail. A comparison of the current study's results with previous results for a specific instance is undertaken to verify the findings, and excellent agreement between them is observed.Validerad;2022;Nivå 2;2022-09-26 (sofila);Funder: Deanship of Scientific Research at King Khalid University (R.G.P.2/175/43);A correction is available for this publication, please see: Mahmood, Z., Alhazmi, S.E., Alhowaity, A. et al. Author Correction: MHD mixed convective stagnation point flow of nanofluid past a permeable stretching sheet with nanoparticles aggregation and thermal stratification. Sci Rep 12, 22533 (2022), https://doi.org/10.1038/s41598-022-26885-6</p
