scholarly journals Evolutionary Transition of Stormwater Pump System in Tokyo

2021 ◽  
Vol 16 (3) ◽  
pp. 421-428
Author(s):  
Hiroaki Mitamura ◽  
◽  
Masaki Fujie
Keyword(s):  
Urban Areas ◽  
Technological Development ◽  
Evolutionary Transition ◽  
Pump System ◽  
Metropolitan Government ◽  
Development History ◽  
Pump Station ◽  
History Of ◽  
Inland Flooding ◽  
Second Period

One of the roles of sewerage is to effectively discharge stormwater and protect urban areas from inland flooding, but there are several challenges to overcome. Urban development is progressing in Tokyo, and the amount of stormwater flowing into the sewers is increasing. In order to respond to the increase in the frequency of heavy rainfall in recent years, it is necessary to improve the capacity of stormwater pumps. The Bureau of Sewerage Tokyo Metropolitan Government has been working on the technological development of higher-performance stormwater pumps since the 1950s, when initial-type stormwater pumps were installed. The technological development history of stormwater pumps in Tokyo can be broadly divided into four periods. The first period spanned approximately 30 years when initial-type pumps, which start to operate after stormwater flows into the pump station, were active. In the second period, which spans approximately 20 years from 1980, two types of pumps were developed; a non-water supply pump that could operate reliably even in an earthquake, and a standby operation pump that could respond to sudden stormwater inflow during torrential rains. The third period spans approximately 15 years from 1999, when the waterless standby pump, which integrated the features of the two pumps developed in the second period, was developed and introduced. The fourth period is the era of pumps with higher performances than third period pumps developed after 2015. Currently, these stormwater pumps are operated together with a rainfall radar system that accurately grasps the rainfall situation and protects the citizens of Tokyo from inland flooding.

scholarly journals A short comparative history of wells and toilets in South Africa and Finland

2006 ◽  
Vol 2 (1) ◽  
Author(s):  
Johannes Haarhoff ◽  
Petri Juuti ◽  
Harri Mäki
Keyword(s):  
South Africa ◽  
Middle Ages ◽  
Rural Areas ◽  
Urban Areas ◽  
Cultural Practices ◽  
Technological Development ◽  
Well Being ◽  
History Of ◽  
Similar Solutions ◽  
The 19Th Century

This paper describes the technological development of wells and toilets and the cultural practices related to them in two countries, South Africa and Finland, from the Middle Ages to modern times. Wells and toilets have always been linked to the well-being of humans and they still are the most common technical systems in the service of mankind. They are simple to build, but if they are constructed improperly or stop functioning properly, they may endanger the health of both humans and the environment. The solutions used for getting clean water or for disposal of excrement have always been a matter of life and death for human settlements. Located on opposite sides of the world, the climate and natural resources of South Africa and Finland are very different. However, surprisingly similar solutions, for example wind turbines to pump water, have been used in rural areas. Furthermore, urbanization and industrialization occurred in both countries at approximately the same time in the 19th century, which caused increasing environmental problems in Finnish and South African urban areas. The transition to modern water supply and waste disposal systems was a very demanding process for municipal administrations in both countries.

Opportunistic Colorectal Cancer Screening using Colonoscopy. Comparative Results between two Historical Cohorts in Bucharest, Romania

2015 ◽  
Vol 24 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Elena Mirela Ionescu ◽  
Tudor Nicolaie ◽  
Serban Ion Gologan ◽  
Ana Mocanu ◽  
Cristina Ditescu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Screening Program ◽  
Advanced Adenoma ◽  
Detection Rates ◽  
Incidence And Mortality ◽  
Organized Screening Program ◽  
History Of ◽  
Comparative Results ◽  
Asymptomatic Individuals ◽  
Second Period

Background & Aims: Even though Romania has one of the highest incidence and mortality in colorectal cancer (CRC) in Europe, there is currently no organized screening program. We aimed to assess the results of our opportunistic CRC screening using colonoscopy.Methods: A single center retrospective study to include all opportunistic screening colonoscopies performed in two 18 month periods (2007-2008 and 2012-2013) was designed. All asymptomatic individuals without a personal or family history of adenoma or CRC and with complete colonoscopy performed in these two time periods were included.Results: We included 1,807 individuals, 882 in the first period, 925 in the second period. There were 389 individuals aged below 50, 1,351 between 50 and 75 and 67 older than 75 years. There were 956 women (52.9%), with a mean age of 58.5 (median 59, range 23-97). The detection rates were 12.6% for adenomas (6.1% for advanced adenoma) and 3.4% for adenocarcinoma. Adenoma incidence (4.9% in subjects under 50, 14.7% in those aged 50 to 75, and 16.4% in those older than 75, p<0.0001) and size (6.3mm in subjects younger than 50, 9.2mm in those 50 to 75 and 10.8mm in those older than 75, p=0.015) significantly increased with age. Adenoma incidence increased in the second period (14.8% vs. 10.3%, p=0.005), while adenoma size decreased in the second period (8.4mm vs. 10mm, p=0.006). There were no procedure related complications.Conclusions: The neoplasia detection rate was 16% (12.6% adenoma, 3.4% adenocarcinoma). Adenoma incidence and size increased with age in both cohorts. In the second screening period significantly more and smaller adenomas were detected.

ABCs of the Revolution

2020 ◽  
Vol 17 (3) ◽  
pp. 278-291
Author(s):  
Egor A. Yesyunin
Keyword(s):  
Civil War ◽  
Second World War ◽  
World War ◽  
Special Significance ◽  
Development History ◽  
The People ◽  
Red Army ◽  
History Of ◽  
Second World ◽  
The Revolution

The article is devoted to the satirical agitation ABCs that appeared during the Civil War, which have never previously been identified by researchers as a separate type of agitation art. The ABCs, which used to have the narrow purpose of teaching children to read and write before, became a form of agitation art in the hands of artists and writers. This was facilitated by the fact that ABCs, in contrast to primers, are less loaded with educational material and, accordingly, they have more space for illustrations. The article presents the development history of the agitation ABCs, focusing in detail on four of them: V.V. Mayakovsky’s “Soviet ABC”, D.S. Moor’s “Red Army Soldier’s ABC”, A.I. Strakhov’s “ABC of the Revolution”, and M.M. Cheremnykh’s “Anti-Religious ABC”. There is also briefly considered “Our ABC”: the “TASS Posters” created by various artists during the Second World War. The article highlights the special significance of V.V. Mayakovsky’s first agitation ABC, which later became a reference point for many artists. The authors of the first satirical ABCs of the Civil War period consciously used the traditional form of popular prints, as well as ditties and sayings, in order to create images close to the people. The article focuses on the iconographic connections between the ABCs and posters in the works of D.S. Moor and M.M. Cheremnykh, who transferred their solutions from the posters to the ABCs.

Hastings Donnan and Pnina Werbner (eds). Economy and Culture in Pakistan: Migrants and Cities in a Muslim Society. London: Macmillan. 1991. 268 pp.

1992 ◽  
Vol 31 (3) ◽  
pp. 325-328
Author(s):  
Ziaul Haque
Keyword(s):  
Urban Areas ◽  
Political System ◽  
Direct Result ◽  
The Political ◽  
Economic Factors ◽  
Population Movements ◽  
Social Fabric ◽  
History Of ◽  
Political Divide ◽  
Different Parts

Modem economic factors and forces are rapidly transforming the world into a single society and economy in which the migration of people at the national and international levels plays an important role. Pakistan, as a modem nation, has characteristically been deeply influenced by such migrations, both national and international. The first great exodus occurred in 1947 when over eight million Indian Muslims migrated from different parts of India to Pakistan. Thus, from the very beginning mass population movements and migrations have been woven into Pakistan's social fabric through its history, culture and religion. These migrations have greatly influenced the form and substance of the national economy, the contours of the political system, patterns of urbanisation and the physiognomy of the overall culture and history of the country. The recent political divide of Sindh on rural/Sindhi, and urban/non-Sindhi, ethnic and linguistic lines is the direct result of these earlier settlements of these migrants in the urban areas of Sindh.

Design and Operation of Small Wastewater Treatment Plants by the Microbial Film Process

1990 ◽  
Vol 22 (3-4) ◽  
pp. 139-144 ◽  
Author(s):  
S. Iwai ◽  
Y. Oshino ◽  
T. Tsukada
Keyword(s):  
Urban Areas ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Small Scale ◽  
Small Communities ◽  
Fishing Villages ◽  
Sewer Systems ◽  
Water Treatment Plants ◽  
History Of ◽  
Microbial Film

Although the ratio of sewer systems to population in Japan has been improving in recent years, the construction of sewer systems in small communities such as farming or fishing villages, etc. had lagged behind that of urban areas. However, construction of small-scale sewer systems in farming and fishing villages has been actively carried out in recent years. This report explains the history of the promotion of small-scale sewer systems, why submerged filter beds are being employed in many cases, and introduces the design, operation and maintenance of representative waste-water treatment plants in farming and fishing villages which incorporate de-nitrogen and dephosphorization.

scholarly journals Recent advances toward the sustainable management of invasive Xylosandrus ambrosia beetles

2021 ◽  
Author(s):  
Antonio Gugliuzzo ◽  
Peter H. W. Biedermann ◽  
Daniel Carrillo ◽  
Louela A. Castrillo ◽  
James P. Egonyu ◽  
...  
Keyword(s):  
Urban Areas ◽  
Physiological Stress ◽  
Plant Stress ◽  
Real Field ◽  
Broad Host Range ◽  
Ambrosia Beetles ◽  
Baited Traps ◽  
Rapid Spread ◽  
Mycoparasitic Fungi ◽  
History Of

AbstractWe provide an overview of both traditional and innovative control tools for management of three Xylosandrus ambrosia beetles (Coleoptera: Curculionidae: Scolytinae), invasive species with a history of damage in forests, nurseries, orchards and urban areas. Xylosandrus compactus, X. crassiusculus and X. germanus are native to Asia, and currently established in several countries around the globe. Adult females bore galleries into the plant xylem inoculating mutualistic ambrosia fungi that serve as food source for the developing progeny. Tunneling activity results in chewed wood extrusion from entry holes, sap outflow, foliage wilting followed by canopy dieback, and branch and trunk necrosis. Maintaining plant health by reducing physiological stress is the first recommendation for long-term control. Baited traps, ethanol-treated bolts, trap logs and trap trees of selected species can be used to monitor Xylosandrus species. Conventional pest control methods are mostly ineffective against Xylosandrus beetles because of the pests’ broad host range and rapid spread. Due to challenges with conventional control, more innovative control approaches are being tested, such as the optimization of the push–pull strategy based on specific attractant and repellent combinations, or the use of insecticide-treated netting. Biological control based on the release of entomopathogenic and mycoparasitic fungi, as well as the use of antagonistic bacteria, has yielded promising results. However, these technologies still require validation in real field conditions. Overall, we suggest that management efforts should primarily focus on reducing plant stress and potentially be combined with a multi-faceted approach for controlling Xylosandrus damage.

scholarly journals Cumulative Prospect Theory Version with Fuzzy Values of Outcome Estimates

Risks ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 72
Author(s):  
Oleg Uzhga-Rebrov ◽  
Peter Grabusts
Keyword(s):  
Prospect Theory ◽  
Expected Utility ◽  
Utility Theory ◽  
Expected Utility Theory ◽  
Cumulative Prospect Theory ◽  
Development History ◽  
Decisions Under Risk ◽  
History Of ◽  
Main Factors ◽  
Theoretical Foundations

Choosing solutions under risk and uncertainty requires the consideration of several factors. One of the main factors in choosing a solution is modeling the decision maker’s attitude to risk. The expected utility theory was the first approach that allowed to correctly model various nuances of the attitude to risk. Further research in this area has led to the emergence of even more effective approaches to solving this problem. Currently, the most developed theory of choice with respect to decisions under risk conditions is the cumulative prospect theory. This paper presents the development history of various extensions of the original expected utility theory, and the analysis of the main properties of the cumulative prospect theory. The main result of this work is a fuzzy version of the prospect theory, which allows handling fuzzy values of the decisions (prospects). The paper presents the theoretical foundations of the proposed version, an illustrative practical example, and conclusions based on the results obtained.

Sign in / Sign up

Export Citation Format

Share Document