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The Sri Lankan national water authority, that is The National Water Supply and Drainage Board (NWS&DB) has taken a new wastewater treatment plant into operation at Ja Ela, North of Colombo. The plant has been in operation since September 2011. In April 2012, it was concluded how a test of the aeration efficiency and a performance test should be carried out. The tests have been based on the actual loading of the plant and the analysis results from the daily process control. The evaluation of the aeration efficiency is not reported in this paper. The paper presents the overall performance of the water treatment part of the plant during start-up conditions, from fall 2011 through the first five months of 2012. The results from the operation are found in Table 1. An important circumstance at the plant is the current very low loading in comparison with the design load. This fact has resulted in an introduction of an intermittent mode of the aeration (nitrification) reactor. Based on operation figures, during more than a month (May 2012), it has been possible to give a realistic assessment of the overall performance. The most striking results are summarized as follows: 1) The intermittent operation has enabled an energy efficient operation of the plant. By the introduction of the intermittent aeration, the energy consumption has been reduced by around 75%, compared with the continuous operation mode; 2) The plant performance during the intermittent operation has been improved with respect to virtually all important pollu
The Internet of Things (IOT) is the extension of the Internet to the next level, i.e., bringing the Internet to the real physical world of things. In this research, 22 people working with different aspects of IOT development were interviewed in Finland and in China, in order to investigate their thoughts and personal opinions on the IOT and the individual privacy in the IOT. This paper presents the background of the IOT, interviews and collected answers, as well as highlights of collected free comments.
The innovative development of Wearable Electronics
(WE) is creating exciting
opportunities for application across many industries. Two sectors with high
potential are healthcare and childcare. However, it is in these two sectors
where the challenges of privacy are presumed to be of the highest. In order to
ascertain the personal views of people about potential privacy problems in WE
application in these two sectors, interviews with questionnaires were conducted
in two different countries: Finland and the United
Kingdom (UK). The results indicated that the majority of people in both
countries are positive about the use of WE in healthcare and childcare
environments. However, when more information is added to be read wirelessly,
the attitudes become more negative. In general, the application of WE is more
favorable in the UK and the reason as to the difference will make for
interesting further research. Several interesting viewpoints and concerns were
presented in the interviews. It can be concluded that the implementation of WE
in these two sectors will require the collaboration of work on several areas
and the development of versatile user studies.
The goal of this research was to study how people feel about sharing personal information on social networks. The research was done by interviews; 50 people were interviewed, mostly from mainland China, Hong Kong, and Finland. This paper presents the included 12 questions and discusses the collected answers. It was discovered, e.g., that 38 out of the 50 answerers use social media every day and share versatile personal information on the Internet. Half of the answerers also share information about other people on the Internet. It was also discovered that compared to male answerers, the female answerers were more active in sharing information about other people. There was a significant variety in opinions: what should be the age limit for sharing personal information online, while 22 out of the 50 answerers felt that there is no need for an age limit at all. According to the answers, only a few people use social media for making new friends. Instead, an important reason for using social media is that their existing friends are using. An interesting finding was that the answerers see the Internet as a part of the real world; the privacy that you have on the Internet is the privacy that you have in the real world.