Open Access Library Journal最新文献_第3页

Redesign Solid Waste Collection and Transference System for Addis Ababa (Ethiopia) Based on the Comparison with Shanghai, China 亚的斯亚贝巴城市固体废物收集与转移系统的再设计——基于与中国上海的比较

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107470

Diriba Dechasa Beka, Xiang-zhou Meng

{"title":"Redesign Solid Waste Collection and Transference System for Addis Ababa (Ethiopia) Based on the Comparison with Shanghai, China","authors":"Diriba Dechasa Beka, Xiang-zhou Meng","doi":"10.4236/OALIB.1107470","DOIUrl":"https://doi.org/10.4236/OALIB.1107470","url":null,"abstract":"Solid waste, that is produced as a result of human activity on a daily basis, must be properly managed. Like other cities in developing nations, Addis Ababa is facing problems linked to poorly managing solid waste gathering operations. This study analyzed the existing public solid waste gathering system in the city and undertook a comparative analysis with Shanghai’s solid waste collection system. Qualitative and quantitative data were collected th- rough surveys as well as secondary sources and then comparative analysis with Shanghai has been undertaken. According to the investigation of this research, solid waste collection coverage of Addis Ababa is 70% and only 28.6% of households have separate solid waste at source. Besides, according to respondents, 75.3% of residents were using a sack to collect the waste and only 14.5% were using the waste bin. The study found that lack of access of infrastructures, a lack of an adequately built collection route system and schedule, inadequate and faulty facilities for operations, and corner littering around skips that resulted in improper disposal are among the causes of poor efficiency of solid waste handling in the metropolitan. Lack of understanding, improper disposal, the poor status of waste collectors, the absence of the private sector, and public engagement are some of the social issues that have been experienced. The main problem with the incompetence of this sector in the city was the lack of trained labor and inadequate service delivery. In conclusion, based on Shanghai City’s best practices, the research applied about useful suggestions for strengthening the system and re-designing it.","PeriodicalId":19593,"journal":{"name":"Open Access Library Journal","volume":"46 1","pages":"1-23"},"PeriodicalIF":0.0,"publicationDate":"2021-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80485210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Evaluation of the Impacts of Sea Level Rise Hazards in Douala-Cameroon 杜阿拉-喀麦隆海平面上升灾害影响评估

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107427

Mary Lum Fonteh Niba, S. Gideon

{"title":"Evaluation of the Impacts of Sea Level Rise Hazards in Douala-Cameroon","authors":"Mary Lum Fonteh Niba, S. Gideon","doi":"10.4236/OALIB.1107427","DOIUrl":"https://doi.org/10.4236/OALIB.1107427","url":null,"abstract":"Global warming and its associated impacts of Sea Level Rise hazards of flooding by storm surge, inundation, salt water intrusion to ground water, salt water incursion to rivers/estuaries affects low lying coastal Countries and small islands. Douala, with ecological and socio-economic vital values for the country is exposed to and should be prepared for the impacts of Sea Level Rise hazards while partaking in mitigation schemes. Consequently, vulnerability of fresh water resources of Sea Level Rise (SLR) hazards was assessed and projected areas at risk mapped. These were estimated using the coastal vulnerability index matrix. Projected areas at risk were obtained using the geographical information system geo-processing query. The calculated coastal vulnerability index (CVI)-SLR was 3.6 for the Douala low lying region indicating that it is high. Inundation (4) followed by SWI into ground water aquifers (3.86) was the dominant Sea Level Rise hazard impacts for the study area. Bareground (132.21 and 446.82 km2) and settlement (152. And 476.5 km2) classes of land cover will be more affected by 5 and 10 m projected flood levels. This study therefore suggests that major investments should be made to improve the data base of climate change variables of the coastlines of Douala and the entire nation since information from these databases will form the basis for the development of adaptation strategies to any future SLR hazards.","PeriodicalId":19593,"journal":{"name":"Open Access Library Journal","volume":"21 1","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2021-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85959424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Research on the Collaborative Education of Ideological and Political Education under the Guidance of Party Construction 党建指导下思想政治教育协同教育研究

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107259

Zhonghui Xue, J. Lai, Qianfeng Ma

引用次数: 2

Waterborne Disease Risk Factors and Intervention Practices: A Review 水传播疾病危险因素及干预措施综述

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107401

Winfred Mbinya Manetu, A. Karanja

引用次数: 12

Multi-Channel Low-Noise Analog Front Design 多通道低噪声模拟前端设计

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107410

Bin Bai

引用次数: 0

Dose Load during Angiographic Procedures LCx Stenting 血管造影过程中的剂量负荷

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107394

Bistra Manusheva

{"title":"Dose Load during Angiographic Procedures LCx Stenting","authors":"Bistra Manusheva","doi":"10.4236/OALIB.1107394","DOIUrl":"https://doi.org/10.4236/OALIB.1107394","url":null,"abstract":"The study of the dose load received by the personnel working with x-ray equipment is a very important task in the modern world. The purpose of this article is to assess the dose load based on published dosimetric measurements obtained by an interventional cardiologist from scattered X-ray during the angiographic procedure LCx stenting. The procedure is carried out under X-ray guidance using a Philips Allura Xper FD10 system. The dose calculations and assessments are made for three positions of the patient table—basic (zero), lowest and highest position, and for three control points—“Head”, “Gonads” and “Steps” where the dosimetric measurements of the received effective dose were performed. During the angiographic procedure, three different projections are used (RAO-caudal, LAO-caudal and Pure Cranial), each of which can be basic and the other two non-basic. In this regard, calculations have been made for each of them as a basic one. The results show that the dose load obtained from this procedure is mainly due to the work in the radiographic mode. To reduce the received dose it is necessary to take into account the position of the patient table at each projection, used as basic projection. To reduce the dose load on the body of the interventional cardiologist, it is important to wear appropriate individual radiation protection.","PeriodicalId":19593,"journal":{"name":"Open Access Library Journal","volume":"18 6 1","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"2021-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87363090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New I-Ching and Sports Database 新易经及体育资料库

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107321

H. Cheng

引用次数: 0

Tool for Analyzing the Risks in Dangerous Goods Transportation 危险品运输风险分析工具

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107373

N. Vagiokas, Christos Zacharias

{"title":"Tool for Analyzing the Risks in Dangerous Goods Transportation","authors":"N. Vagiokas, Christos Zacharias","doi":"10.4236/OALIB.1107373","DOIUrl":"https://doi.org/10.4236/OALIB.1107373","url":null,"abstract":"Transportation of Dangerous goods by road may have serious consequences in case of an accident occur. The consequences of a road accident of a heavy goods vehicle carrying dangerous goods may affect not only the truck driver but also the nearby population present. Routing selection is a complicated issue influenced from a number of parameters that may vary during the day, a week or a month. The purpose of the research is to develop a preliminary tool concerning the Transportation of Dangerous Goods which will prove whether a risk analysis using real time data (traffic flows, meteorological conditions, etc.) can offer higher level of safety to the society and the personnel involved in the transportation. The final goal is to enhance safety by making the Dangerous Goods (DG) Risk transportation totally digitalized as a risk management process with real time data acquisition and real time risk assessment through an online platform linked with Global Positioning System (GPS). During the research the risk analysis conducted taking into account all critical parameters for two selected routes. All the necessary data derived from annual statistical data and “simulated” real time data. Data collected concerned all the critical parameters and constraints in order to compare the results to be comparable. Risk quantification was implemented using the DG Quantitative Risk Assessment Model (QRAM) and was illustrated in terms of F/N curves. The results of this research were compared with the ones existed till today which are calculated based on annual statistical data for the above-mentioned factors. The results obtained were compared by means of Societal Risk expressed by Expected Value (EV) and showed that specific factors affect the final routing selection because of the calculated risk.","PeriodicalId":19593,"journal":{"name":"Open Access Library Journal","volume":"5 1","pages":"1-22"},"PeriodicalIF":0.0,"publicationDate":"2021-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79720321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on Infant Learning Thinking Based on the Integration of Truth and Reality 基于真实与现实融合的幼儿学习思维研究

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107437

Yiran Zhang, Kailai Jiang

引用次数: 0

Screening for Syphilis in Pregnant Women in Resource-Limited Environment: Which Approach Is Effective? Case Report 资源有限环境下孕妇梅毒筛查:哪种方法有效?病例报告

Open Access Library Journal Pub Date : 2021-05-06 DOI: 10.4236/OALIB.1107093

Raphael Byamungu Mugondozi, Gaspard Makambo Mohilo, Maurice Masoda Nyamalyongo

引用次数: 0