The development of portable air quality detection

Air quality is very important to ensure the health of humans, plants, and even animals. The tragedy of chemical waste disposal in the Kim Kim river has resulted in air pollution in the surrounding area.Therefore, this innovation has been developed to produce a mobile device that has a low cost, detection of the gas in real-time, and overcome the problems faced due to chemical waste pollution such as shortness of breath, nausea, and vomiting. Portable air quality detection is an innovation used to detected and measured the connections between software and hardware that are required for analysis purposes. The outputs detected are carbon dioxide, benzene, alcohol, ammonia, nitrogen oxide, and smoke. Data analysis was done by making a comparison between the output values in LCD and Favoriot and Blynk. This project also can measure the value of temperature and humidity. The sensor used to detect gas readings is MQ135 gas sensor and for temperature and humidity sensor is DHT22 sensor. The value of gas, temperature, and humidity in the environment will be displayed on the website as well as on the phone applications. This innovation used two types of platforms to display the data, Favoriot in website platform and Blynk used on smartphones. In addition, this value will be recorded and stored on the website for future use by the users. The users will also be able to compare readings before and after to ensure that the air in the environment is in good condition. In addition, this project can warn users if the reading is at danger level. The buzzer will sound and users will be notified by email. For future recommendations, the A3OZ sensor can be used to achieve high precision values for O3 and NO2 readings with a detection range of 0-10 ppm and detection accuracy of 20 pp

Critical review of dark tourism: tourists’ perceptions and behaviour

There is a growing interest in dark tourism as evident in the increased number of publications discussing dark tourism, as well as the number of dark destinations and tourists visiting dark destinations all over the world. Past literature has concentrated on the designation and theoretical aspects of dark tourism. Emphasis was given on the scope of dark tourism, site typology, managerial aspects and issues in developing dark destinations. Thus, less is known on the travel behaviour to these places. In addition, the early studies on tourists’ behaviour to the dark destination are majorly speculated. Among the most frequently cited factors influencing travel behaviour are tourists’ motivation and experience, emotions, and perceptions towards dark tourism. Therefore, this paper will critically review the definitions of dark tourism, tourist motivation to visit dark destinations and other travel behaviours on dark tourism

Performance Analysis on Stereo Matching Algorithms Based on Local and Global Methods for 3D Images Application

Stereo matching is one of the methods in computer vision and image processing. There have numerous algorithms that have been found associated between disparity maps and ground truth data. Stereo Matching Algorithms were applied to obtain high accuracy of the depth as well as reducing the computational cost of the stereo image or video. The smoother the disparity depth map, the better results of triangulation can be achieved. The selection of an appropriate set of stereo data is very important because these stereo pairs have different characteristics. This paper discussed the performance analysis on stereo matching algorithm through Peak Signal to Noise Ratio (PSNR in dB), Structural Similarity (SSIM), the effect of window size and execution time for different type of techniques such as Sum Absolute Differences (SAD), Sum Square Differences (SSD), Normalized Cross Correlation (NCC), Block Matching (BM), Global Error Energy Minimization by Smoothing Functions, Adapting BP and Dynamic Programming (DP). The dataset of stereo images that used for the experimental purpose is obtained from Middlebury Stereo Datasets

Legal and administrative issue for underground land development in Malaysia

Land developments nowadays are not anymore limited to horizontal development (landed property) and vertical development (strata) but also underground land development. Looking to the necessity of urban land development in this era, underground land seems to look as an option for development especially in infrastructure and utilities. Other developing countries such as Singapore, Japan, Hong Kong and China have started to maximize the utilization of underground land development with several of development type. Malaysia also has no exception from this because past experience has proven that we are also capable to develop underground land through the development of SMART Tunnel, Light Rail Transit and Merdeka Square. Positively on that example, Mass Rapid Transit was proposed to link the Klang Valley area with an efficient public transport. When the box station develops underground under the alienated land, issues in policy and legislation for underground land begin to rise from one to another. It started from property rights issues, ownership issues and jump to the application of the legislation that related to underground land development. Therefore, this paper attempt to discuss the issues critically together with the Malaysian case study of underground land development. The investigation also attempts to touch on how far the legislation provided help in assisting the underground land development and the gap that need to be filled in. To conclude, it is expected that the discussion can assist in finding solutions for underground land development in Malaysia