scholarly journals Performance Evaluation of Drainage System in Shire Endaslasse Town, Northern Ethiopia

Author(s):  
Hadush Gebreyohannes ◽  
Ahmed Degu

The stormwater drainage problem is one of the major challenges facing in Shire Endaslasse town, Ethiopia. In a town, Street flooding and overtopping drainage system problems are occurring during the rainy season. This causes ponding which poses difficulties in ease of transportation and it hinders the day-to-day activity of the people. So, the study focuses on the performance of the stormwater drainage system in Shire Endaslasse town using Arc GIS and SWMM5.1. For this study, the primary data were collected by field surveys and interviews with the council body. Simulation results for storm events show that in some of the drainage systems in different regions of Shire Endaslasse town have flooded. During the field observation, the drainage structures are filled with solid wastes, inadequate inlet and outlet structures and some of the top element of the manhole have been broken this may cause a problem of aesthetic and healthy at large it may increase flood risk. The flooding risk in the drainage systems is very high due to the drainage system is undersized to cope with the current rainfall rates, but also is very limited to face the upcoming predicted rainfall.

2021 ◽  
Vol 13 (13) ◽  
pp. 7189
Author(s):  
Beniamino Russo ◽  
Manuel Gómez Valentín ◽  
Jackson Tellez-Álvarez

Urban drainage networks should be designed and operated preferably under open channel flow conditions without flux return, backwater, or overflows. In the case of extreme storm events, urban pluvial flooding is generated by the excess of surface runoff that could not be conveyed by pressurized sewer pipes, due to its limited capacity or, many times, due to the poor efficiency of surface drainage systems to collect uncontrolled overland flow. Generally, the hydraulic design of sewer systems is addressed more for underground networks, neglecting the surface drainage system, although inadequate inlet spacings and locations can cause dangerous flooding with relevant socio-economic impacts and the interruption of critical services and urban activities. Several experimental and numerical studies carried out at the Technical University of Catalonia (UPC) and other research institutions demonstrated that the hydraulic efficiency of inlets can be very low under critical conditions (e.g., high circulating overland flow on steep areas). In these cases, the hydraulic efficiency of conventional grated inlets and continuous transverse elements can be around 10–20%. Their hydraulic capacity, expressed in terms of discharge coefficients, shows the same criticism with values quite far from those that are usually used in several project practice phases. The grate clogging phenomenon and more intense storm events produced by climate change could further reduce the inlets’ performance. In this context, in order to improve the flood urban resilience of our cities, the relevance of the hydraulic behavior of surface drainage systems is clear.


Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 375 ◽  
Author(s):  
Farjana Akhter ◽  
Guna A. Hewa ◽  
Faisal Ahammed ◽  
Baden Myers ◽  
John R. Argue

The contribution of this paper is a comparison of the installation cost of a conventional drainage system consisting of a network of pits and pipes, with that of a hybrid drainage system comprising a network of pits and pipes, supported by allotment scale infiltration measures in a modern greenfield residential development. The case study site is located in Pipers Crest, near Strathalbyn, South Australia. This as-built site consists of 56 allotments, 42 pits (hence 42 sub-catchments), one detention basin and over 1000 m of drainage pipes. In this study, conventional and hybrid (combination of conventional and Water Sensitive Urban Design, WSUD systems) drainage systems were designed to convey minor storm events of 10% annual exceedance probability (AEP), and checked for major storm events of 5% AEP, using the DRAINS model and/or source control principles. The installation costs of the conventional and hybrid drainage systems were estimated and compared based upon cost estimates derived from Australian literature. The results of the study indicate that satisfactory drainage was possible using the conventional or hybrid system when the two systems were designed to have outflow not exceeding the pre-developed flow. The hybrid drainage system requires smaller pipe sizes compared to the conventional system. Also, the size of the detention basin and maximum outflow rate of the hybrid system were smaller than those for the conventionally drained site. The installation cost of the hybrid drainage system was 18% less than that of the conventional drainage system when the objective was to accommodate 10% and 5% AEP storms.


2017 ◽  
Vol 11 (1) ◽  
pp. 1-9
Author(s):  
Taufikah Rahmah ◽  
T Reza Ferasyi ◽  
Razali Razali ◽  
Muhammad Hambal ◽  
Rastina Rastina ◽  
...  

The aim of this research was to calculate an estimated population of dogs, dog population ratio comparison against their area, the household, the number of owners, and the gender as well as to find out the level of knowledge towards risk of rabies to dog owners at Jorong in Padang Ganting Sub-district. The respondents were the people at 4 jorong Padang Ganting Sub-district who kept the dogs at home and willing to be interviewed. This research was conducted in the form of field surveys. Data was collected by interviewing people who rose the dogs using a form and a structured questionnaire. Data retrieval was composed of secondary and primary data. Secondary data was taken from the animal husbandry and fisheries at Tanah Datar district. Data were analyzed using descriptive methods. The results showed that the population of dogs at 4 ellipse were the ellipse Koto Gadang Hilir, Koto Alam, Koto Gadang, Rajo Dani were 140, 117, 124, 115. There were any differences between the number of households with dog owners, the number of households with dogs, the number of dogs with owners dogs, and area with dogs, male and female dogs, a male dog with dog owners, a female dog with dog owners. Respondents generally maintained more than one dog with rearing cages. The purpose of maintenance dog was a hunting dog and gave the vaccination. From this research, also known the knowledge of the owner to the risk of rabies at Padang Ganting Sub-district and good in categories


2020 ◽  
Vol 28 (1) ◽  
pp. 35-50
Author(s):  
Dewi Kusuma Wardani ◽  
Ratih Ranika Putri Utami

This study aims to determine the effect of transparency in financial management of village funds and community empowerment on community welfare in Sidoharjo Village, Tepus District, Gunungkidul Regency. This research method uses quantitative descriptive methods and primary data using questionnaires. This study took a sample of residents who were divided into 11 hamlets in Sidoharjo Village, Tepus District, Gunung kidul Regency. The sampling technique is stratified random sampling. Data collection is done by distributing questionnaires directly to people’s homes, attending social gatherings and routine meetings held by community members. It aims to obtain more data from respondents directly. The number of questionnaires processed was 120 questionnaires. Data were analyzed using multiple linear regression analysis. The results of this study indicate that community empowerment has a positive effect on the welfare of the people of Sidoharjo Village, Tepus District, Gunungkidul Regency, while transparency in financial management of village funds does not affect the welfare of the community in Sidoharjo Village, Tepus District, Gunungkidul Regency.


Author(s):  
Anggit Rahmat Fauzi ◽  
Ansari Ansari

The utilization of e-commerce media in the trading world brings impact to the international community in general and the people of Indonesia in particular. For Indonesian people, This is related to a very important legal problem. The importance of law in the field of e-commerce is mainly in protecting the parties who transact through the Internet. The purpose of this study is to know the legal review of the buying and selling agreements through electronic media as well as to know the legal protections for sellers and buyers if one of the parties commits a default. The research uses a normative juridical method of approach and the discussion is done in a descriptive analysis. The source and type of data used are primary data and secondary data. While the data collection techniques using literature studies, and the data obtained will be analyzed qualitatively. The agreement to buy and sell through electronic media is a new phenomenon that has been implemented in various countries and regulated in the Civil state nor law ITE. Legal protection for the parties in the sale and purchase agreements through electronic media is governed by the consumer protection ACT. Any breach must respond to any loss arising from his or her actions.


Author(s):  
Roger R Tabalessy

Coastal areas can either meet the human needs or give great contribution to the development. However, rapid infrastrural development in Sorong, west Papua, has been followed by high demand for mangrove timber and caused mangrove forest degradation due to exploitation. This exploitation could also result from high economic value of the mangrove timber. This study was done to analyze the economic value of mangrove wood utilized by the people to support the development process in Sorong. This study used primary data obtained through interviews and the economic value calculation of mangrove forests. It found that Sorong had mangrove economic value of IDR 165,197,833, 491. Wilayah pesisir selain dapat memenuhi kebutuhan hidup manusia juga memberikan kontribusi yang besar bagi pembangunan. Cepatnya pembangunan infrastruktur di Kota Sorong diikuti pula dengan tingginya permintaan akan kayu mangrove dan menyebabkan terjadinya degradasi hutan mangrove akibat eksploitasi. Eksploitasi ini disebabkan juga akibat kayu mangrove memiliki nilai ekonomi. Penelitian yang dilakukan ini bertujuan untuk menganalisis nilai ekonomi kayu mangrove yang dimanfaatkan oleh masyarakat Kota Sorong dalam proses menunjang pembangunan. Penelitian ini menggunakkan data primer yang diperoleh melalui hasil wawancara dan perhitungan nilai ekonomi hutan mangrove. Hasil penelitian ini menunjukkan nilai ekonomi ekosistem hutan mangrove yang berada di Kota Sorong adalah Rp165.197.833.491.


2020 ◽  
Vol 10 (1) ◽  
pp. 35-44
Author(s):  
Fausiah Fausiah

The number of inpatient visits in RSU Anutapura Palu, where in 2015 inpatient visits of 5,640, then in 2016 patient visits decreased to 5,451, in 2017 also decreased to 3,999 and in 2018 also decreased Drastic to 1,146 patient visits. This research aims to determine the utilization of health services in patients in general hospitalization in RSU Anutapura Palu. This type of research is quantitative descriptive. Research was conducted from May-June 2019. The population in the study is a visitor (number of hospitalizations) at the General Hospital (RSU) Anutapura Palu. In this case the people who use health services in the General Hospital (RSU) Anutapura Palu recorded as many as 1,146 visitors (patients) in the year 2018. Primary data collection is through questionnaires and secondary data through the study of patient record documents and other supporting documents. The utilization of health services in patients in general hospitalization in RSU Anutapura Palu is well from the aspects of health beliefs, abilities and needs. RSU Anutapura Palu is expected to be able to improve the promotion of health services so that people use the health services provided.  


Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 514
Author(s):  
Leonardo Bayas-Jiménez ◽  
F. Javier Martínez-Solano ◽  
Pedro L. Iglesias-Rey ◽  
Daniel Mora-Melia ◽  
Vicente S. Fuertes-Miquel

A problem for drainage systems managers is the increase in extreme rain events that are increasing in various parts of the world. Their occurrence produces hydraulic overload in the drainage system and consequently floods. Adapting the existing infrastructure to be able to receive extreme rains without generating consequences for cities’ inhabitants has become a necessity. This research shows a new way to improve drainage systems with minimal investment costs, using for this purpose a novel methodology that considers the inclusion of hydraulic control elements in the network, the installation of storm tanks and the replacement of pipes. The presented methodology uses the Storm Water Management Model for the hydraulic analysis of the network and a modified Genetic Algorithm to optimize the network. In this algorithm, called the Pseudo-Genetic Algorithm, the coding of the chromosomes is integral and has been used in previous studies of hydraulic optimization. This work evaluates the cost of the required infrastructure and the damage caused by floods to find the optimal solution. The main conclusion of this study is that the inclusion of hydraulic controls can reduce the cost of network rehabilitation and decrease flood levels.


2021 ◽  
Vol 1 (1) ◽  
pp. 44-56
Author(s):  
Rinaldi Septiana ◽  
Rio Kartika Supriyatna

The purpose of this study is to determine and analyze the magnitude of the effect of expectations and benefits on motivation partially and simultaneously. Analyze the effect of expectations and benefits on decisions. Analyzing the effect of expectations and benefits on decisions through intervening variables.This research is quantitative. Data collection method is to use primary data through a questionnaire to the people of Situ Udik Village with a sample size of 96 respondents. The analysis used is path analysis. The results of the study in regression 1 showed that partialy and simultaneously the expectation variable had a real positive effect on people's motivation. The model regression test shows that the expectation variable has no effect on motivation. Simultaneously shows the expectation and profit variables have a significant positive effect on motivation. The influence of expectations on decisions proves that there is no direct influence on decisions. Analysis of the effect of profits on decisions proves that there is a significant influence on decisions. In the analysis of the influence of expectations on decisions through motivation shows there is a significant effect, on the profit variable, there is an influence on decisions through motivation as a connecting variable.  


2021 ◽  
Vol 11 (2) ◽  
pp. 350-368
Author(s):  
Tirivavi Moyo ◽  
Gerrit Crafford ◽  
Fidelis Emuze

PurposeWhile operational factors reduce construction workers' productivity in Zimbabwe, the impact of the people-centred management aspects has not been empirically interrogated as a remedy. This article reports on a study that sought to determine significant people-centred management aspects that lead to improved labour productivity and assesses the existence of statistically significant differences due to the demographic variables of respondents. Demographic-specific strategies that enhance construction “workers” productivity were revealed.Design/methodology/approachThe survey research design using a self-administered questionnaire was deployed to collect the primary data. The design followed a positivist paradigm to evaluate objectively how people-centred management affects construction workers' productivity. The statistical data were descriptively and inferentially analysed.FindingsPeople-centred management was determined to be significant in improving construction workers' productivity, with the most significant aspect being the building of employee confidence in related approaches. Designations and educational levels mostly indicated a statistically significant difference in several aspects that included the adoption of a functional reward culture for workers and training on people-centred principles. Training on-site management and construction workers in people-centred management and its application are crucial to improving construction workers' productivity.Research limitations/implicationsConstruction companies should drastically improve their concern for people while they sustain a high concern for production within their construction sites. Although several factors affect construction workers' productivity, this study determined that management-related factors and people-centred management were significant towards influencing low productivity in Zimbabwe.Originality/valueThe study determined people-centred management and demographic-specific interventions as being able to improve construction workers' productivity in Zimbabwe.


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