Supplementary material for: Effects of microclimatic and human parameters on outdoor thermal sensation in the high-density tropical context of Dhaka

The supplementary material has a separate DOI generated from ResearchGate: DOI: 10.13140/RG.2.2.30599.4496

Impact of urban geometry on indoor air temperature and cooling energy consumption in traditional and formal urban environments

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the URI link.This study explores the effect of outdoor microclimatic environment on indoor conditions in a tropical warm-humid climate. An indoor air temperature and building energy performance analysis is carried out for the real case-study areas to examine the impact of urban geometry on building indoor conditions. The study incorporates microclimatic data from CFD, micro-climatic tool ENVI-met into building energy performance analysis using IES-VE. Findings reveal that diversity in urban geometry in deep urban canyons is helpful in reducing the indoor air temperature and cooling load. On average, cooling load in model rooms in the formal area is 21% higher for 1st floors (40% for top floors) compared to the corresponding rooms in the traditional area. In terms of solar gains, the difference was 30% for the 1st floors and 91% for the top floors, with rooms in the formal area having the higher ranges. Furthermore, the room air temperature in the traditional area was found to be 0.6-1.6 Deg C lower than those in the formal area

ETS (Efficient, Transparent, and Secured) Self-healing Service for Pervasive Computing Applications

To ensure smooth functioning of numerous handheld devices anywhere anytime, the importance of self-healing mechanism cannot be overlooked. Incorporation of efficient fault detection and recovery in device itself is the quest for long but there is no existing self-healing scheme for devices running in pervasive computing environments that can be claimed as the ultimate solution. Moreover, the highest degree of transparency, security and privacy attainability should also be maintained. ETS Self-healing service, an integral part of our developing middleware named MARKS (Middleware Adaptability for Resource discovery, Knowledge usability, and Self-healing), holds promise for offering all of those functionalities

An Underwater SLAM System using Sonar, Visual, Inertial, and Depth Sensor

This paper presents a novel tightly-coupled keyframe-based Simultaneous Localization and Mapping (SLAM) system with loop-closing and relocalization capabilities targeted for the underwater domain. Our previous work, SVIn, augmented the state-of-the-art visual-inertial state estimation package OKVIS to accommodate acoustic data from sonar in a non-linear optimization-based framework. This paper addresses drift and loss of localization -- one of the main problems affecting other packages in underwater domain -- by providing the following main contributions: a robust initialization method to refine scale using depth measurements, a fast preprocessing step to enhance the image quality, and a real-time loop-closing and relocalization method using bag of words (BoW). An additional contribution is the addition of depth measurements from a pressure sensor to the tightly-coupled optimization formulation. Experimental results on datasets collected with a custom-made underwater sensor suite and an autonomous underwater vehicle from challenging underwater environments with poor visibility demonstrate performance never achieved before in terms of accuracy and robustness

Customer satisfaction in business : A case study of Moon travel ltd

Today, competition among businesses has become increasingly intense and organizations realize that they cannot compete with each other solely on price, but need to focus on their valued customers. The purpose of this thesis was to measure the current level of the customer satisfaction in the case company as well as to better understand customers’ needs from the company’s point of view in order to improve customer service. Another purpose was to analyze the reasons and factors that might obstruct efforts to affect satisfaction levels. The theoretical section of the thesis concentrates on service, service quality and factors affecting the satisfaction level. At the beginning of the theory, elements of service are first discussed and then, the importance of customer satisfaction and measuring customer satisfaction is described. All the data for the theoretical section was collected from the literature. This research was accomplished using a quantitative research approach by means of a questionnaire and small interview conducted with the company owner. The questionnaire was divided into three parts, containing multiple choice questions and including an open question about customer feelings and opinions at the end. The questionnaire was distributed to the company over a period of one month. In conclusion, the research revealed that the current service level of Moon travel can be judged as positive and customers are very satisfied with the service they have received. However, several areas were found that need to be improved. In order to improve the level of customer satisfaction, it is recommended that the company should improve its’ service environment, implement staff training, and adjust the price of the service, as well as conducting regular advertising campaigns to attract new customers and to inform exiting customers about special offers and upcoming events