scholarly journals The Impact of Street Layout Design on Non-Motorized Activities with Nairobi City, Kenya

2021 ◽  
Vol 09 (02) ◽  
pp. 252-278
Author(s):  
Mwangi Josephine ◽  
Gariy Abiero ◽  
Makworo Micah
2011 ◽  
Vol 27 (03) ◽  
pp. 137-145 ◽  
Author(s):  
Deniz de Koningh ◽  
Herbert Koelman ◽  
Hans Hopman

Conventionally, the rooms and spaces of a ship are either modeled as volumetric entities, or with the aid of bulkheads and decks. According to our knowledge, no simple representation exists where both entities can be modeled independently, and where automated conversion from one view (volumetric) to the other (planes) is possible. This paper introduces a simple yet effective approach, where a ship designer can mix the use of volumes and planes in any fashion. Furthermore, this modeling method is applied in a novel tool to manage ship subdivision constraints. As quite a few numerical constraints are known a priori, they can be defined in a list and assigned to specific subdivision elements. Examples are bulkhead locations or required tank volumes or deck areas. A constraint management tool is developed that evaluates the ship layout design during the design process. The designer will be able to modify or add constraints, and the tool will support the designer by managing these constraints during the design process. If the hull form changes, all submitted rules will be updated according to the new main particulars. If one of the constraints does not comply, an adjustment or alternative can be chosen at that moment and the impact of this change is directly visible. The designer can also ask the tool to provide a ship layout design that complies best with the constraints entered. When the Constraint Management program is used, a feasible ship compartment design can be made in a quick manner and the designer is kept from making errors. This means that a correct ship layout model is available on which probabilistic damage stability calculations and weight estimations can be performed in an early stage. This method has been implemented in a computer program, so actual design examples are discussed.


2020 ◽  
Vol 9 (2) ◽  
pp. 446
Author(s):  
Putu Wisnawan Dharma Sunu ◽  
Putu Yudi Setiawan

The purpose of this research is to know the relation between website layout design, attitude and repurchase intention. The research is targeting the customer of lazada.co.id who domiciled in Bali. Sample’s size of the research is 90 respondents with non-probability sampling method Process of collecting the respondent’s data is by distributing questionnaire. Partial Least Square and Sobel test are used or the instrument’s research. Result of analysis shown that direct relation between website layout design, attitude and repurchase intention have significant positive relation. While, the indirect relation, attitude able to be mediation variable that associated two variables, such as website layout design and repurchase intention. It describes repurchase intention will increase if positive attitude of lazada.co.id customer also increase as the impact of well display of website layout design. Keywords: website layout design, attitude, repurchase intention


2005 ◽  
Vol 40 (2) ◽  
pp. 201-212 ◽  
Author(s):  
Xiaomin Xie ◽  
Zhen Huang ◽  
Jiasong Wang ◽  
Zheng Xie

2019 ◽  
Vol 1201 ◽  
pp. 012066
Author(s):  
Najihah Ibrahim ◽  
Fadratul Hafinaz Hassan ◽  
Ahmad Sufril Azlan Mohamed ◽  
Ahamad Tajudin Khader

2006 ◽  
Vol 41 (10) ◽  
pp. 1352-1363 ◽  
Author(s):  
Xie Xiaomin ◽  
Huang Zhen ◽  
Wang Jiasong

Author(s):  
Nils Boysen ◽  
Dirk Briskorn ◽  
Stefan Schwerdfeger

A moving walkway (also denoted as moving sidewalk, travelator, autowalk, pedestrian conveyor, or skywalk) is a slow moving conveyor that transports standing or walking people horizontally over a short to medium distance. Constantly moving walkways have a long-lasting tradition especially inside large buildings, such as airport terminals and railway stations. Novel technological developments allow to accelerate walkways in their middle sections up to 12 km/h, while still providing a safe and much slower entrance and exit. Furthermore, first applications of moving walkways as environmentally friendly and space-efficient alternatives for urban public transport exist. In this context, our paper aims to support the layout design of moving walkways with optimization. Given a straight corridor (e.g., an airport terminal) and the passenger flows within the corridor (e.g., among gates), we aim to optimally place bidirectional walkway segments. We show that the resulting optimization problem is efficiently solvable by dynamic programming even if multiple relevant extensions, such as multiple objectives, budget constraints, and minimum safety distances, among subsequent segments are relevant. We apply our algorithm to explore the impact of constantly moving and accelerating walkways on total travel times and benchmark solutions without walkway support in a real-world case study. Our results reveal that wrongly placed walkways may considerably slow down passenger transport, but a very simple design rule leads to near-optimal results.


2020 ◽  
Vol 48 (4) ◽  
pp. 922-930
Author(s):  
Shafiqur Rehman ◽  
Salman Khan ◽  
Luai Alhems

Wind energy has become a strong alternative to traditional sources of energy. One important decision for an efficient wind farm is the optimal layout design. This layout governs the placement of turbines in a wind farm. The inherent complexity involved in this process results in the wind farm layout design problem to be a complex optimization problem. Particle Swarm Optimization (PSO) algorithm has been effectively used in many studies to solve the wind farm layout design problem. However, the impact of an important set of PSO parameters, namely, the acceleration coefficients, has not received due attention. Considering the importance of these parameters, this paper presents a preliminary analysis of PSO acceleration coefficients using the conventional and a modified variant of PSO when applied to wind farm layout design. Empirical results show that the acceleration coefficients do have an impact on the quality of final layout, resulting in better overall energy output.


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