维普中文期刊产品整合服务
39篇 您的检索式:作者名="Mitiku"
    题名 作者 年代 出处 被引量
1某乘用车车道偏离预警系统测试与评价显示文摘汽车工业的创新升级促进了高级辅助驾驶系统的广泛应用,尤其以车道偏离预警系统(LDWS)为代表的新技术正在进一步减少因车辆偏离车道造成的交通事故。为探究适合我国道路交通特性的LDWS的测试与评价技术,对某乘用车LDWS的客观性能进行实车试验,分析了直道与弯曲路段条件下,偏离方向、光照条件、车道线类型、横向偏离速度等因素对报警点横向距离D W分布的影响。结果表明:在直道路段,光照、车速对D W的影响较小,而横向偏离速度与D W之间存在负相关性;在弯曲路段,车辆向弯道内侧偏离时D W分布与直线路段相似,但是发生弯道外侧偏离时,报警时刻较晚。研究结果丰富了目前对LDWS测试工况与评价技术的应用。Ayalew Mesfin Mitiku 邵毅明 张磊 王蓉 彭金栓 2020重庆交通大学学报(自然科学版)2020,39,11:2
2Impact of exclosures on wood biomass production and fuelwood supply in northern Ethiopia显示文摘In the Ethiopian highlands, communal grazing lands are one of the major land uses, and are source of livelihood for the rural people. Free and uncontrolled grazing in the communal grazing lands is the dominant grazing system. The traditional uncontrolled and free grazing system has caused severe degradation of the grazing lands. As a result, communities have started to establish exclosures and support the restoration of degraded communal grazing lands. Studies have shown that exclosures are effective to restoring degraded communal grazing lands and improving ecosystem services. However, studies that investigate the changes in aboveground biomass following the establishment of exclosures and compare it with fuelwood demand of the beneficiaries in our study area is lacking. Therefore, our study aimed at:(1) quantifying yearly biomass accumulation in exclosures and compare it to fuelwood demand of households that manage the exclosures;(2) assessing household energy sources and their consumption levels. To monitor changes in biomass production with over time, replicated(n = 3) 5 and10 year-old exclosures were sampled. To investigate fuelwood sources and consumption patterns, household surveys, key informant interviews and focus group discussion were conducted. Our results demonstrated that total biomass production increased with exclosure age. In both exclosure, biomass production from Vachellia etbaica was significantly(p \ 0.05) greater than that from Euclea.racemosa. Average daily fuelwood consumption per person was(0.63 ± 0.2) kg day^(-1). This means that the total biomass(27.5 Mg year^(-1)) obtained from 114.6 ha of exclosures covers only 9.4% of yearly fuelwood demand of the residents who manage the sampled exclosures. Nearly all respondents(95%) confirmed that they travel more than10 km day^(-1) to gather fuelwood from surrounding degraded forest patches. We recommend plantings of fast growing native tree species within exclosures and around homesteads to provide a sustainable fuelwood supply and using improved stoves to address the problem of fuelwood shortage. District agricultural offices could provide seedlings of native plant species, while communities provide unpaid labour for planting and managing plantations.Wolde Mekuria Mastewal Yami Mitiku Haile Kindeya Gebrehiwot Emiru Birhane 2019Journal of Forestry Research2019,30,2:2
3Oscillatory hyper Hilbert transforms along general curves显示文摘我们认为摆动的亢奋的 Hilbert 变换 H 是 ,, f (x)=0 f (x -(t)) e 它 -- t -(1+) dt;在哪儿(t)=(t,(t)) 在 2 是一条一般曲线。什么时候是凸的,我们给一个简单条件在上以便 H ,, 在 L 2 上被围住什么时候 > 3, > 0:作为推论,在这个条件下面,我们获得 H 的 L p -boundedness,, 什么时候 2/(2 - 3 ) p /(3 ) 。什么时候是一条一般 nonconvex 曲线,我们给一些更复杂的条件在上以便 H ,, 在 L 2 上被围住:作为一个应用程序,我们构造沿着 H 的严格地凸的曲线的一个类,, 在 L 2 上被围住仅当 > 2 > 0。Jiecheng CHEN Belay Mitiku DAMTEW Xiangrong ZHU 2017Frontiers of Mathematics in China2017,12,2:2
4Land suitability analysis for maize production using geospatial technologies in the Didessa watershed,Ethiopia显示文摘Physical land suitability assessment is a prerequisite for enhancing yield production and enables the agricultural communities to use the right place for the right crops.Maize is one of stable one food crops of Ethiopia and cultivated in three agroecological zones:highland,midland and lowlands.Despite these facts,maize yield is very low due to a lack of knowledge and information gaps on land suitability.Physical land suitability for maize cultivation is essential to minimize the problem of food security.The present study aims to identify the potential land suitability for maize production in the Didessa watershed,Western Ethiopia using Multi-Criteria Evaluation(MCE)and geospatial technologies.Land use land cover(LULC)change,climate,topography,soil,and infrastructure facilities were considered for maize land suitability assessment.The MCE based pairwise comparison matrix was applied to estimate land suitability for maize crop cultivation.The results showed that,about 977.7 km^(2)(14.1%)is highly suitable,4794.9 km^(2)(69.1%)is moderately suitable while 1118.8 km^(2)(16.1%),and 51.5 km^(2)(0.7%)of the study area were categorized under marginally and not suitable for maize production,respectively.This research provides crucial information for decision making organs and the farming community to utilize potential areas for maize cultivation.Mitiku Badasa Moisa Firdissa Sadeta Tiye Indale Niguse Dejene Dessalegn Obsi Gemeda 2022Artificial Intelligence in Agriculture2022,,1:2
5Human impact on the environment in the Ethiopian and Eritrean highlands—a state of the art显示文摘Jan Nyssen Jean Poesen Jan Moeyersons Jozef Deckers Mitiku Haile Andreas Lang 2003Earth Science Reviews2003,,3:1
6Phenotypic diversity of tetraploid wheat Landraces from northern and north-central regions of Ethiopia显示文摘Bechere E Belay G Mitiku D 1996Hereditas1996,124,2:1
7Tillage erosion on slopes with soil conservation structures in the Ethiopian highlands显示文摘Jan Nyssen Jean Poesen Mitiku Haile 2000Soil and Tillage Research2000,57,3:1
8Comparative immunogenicity of HIV-1 clade C envelope proteins for prime/boost studies显示文摘Smith DH Winters-Digiacinto P Mitiku M O'Rourke S Sinangil F Wrin T Montefiori DC Berman PW 2010PLoS One2010,5,12:1
9Effectiveness of exclosures to restore degraded soils as a result of overgrazingin Tigray, Ethiopia显示文摘Wolde M Veldkamp E Mitiku H 2007Journal of Arid Emvironments2007,69,2:1
10The blood pressure response to dynamic exercise testing: a systematic review显示文摘Le VV Mitiku T Sungar G 2008Prog Cardiovasc Dis2008,51,2:1
11Laparoscopic a-djustable gastric banding显示文摘 Marc L Vernon V 1998World J Surg1998,22,:1
12Comparative immunogenieity of HIV-1 elade C envelope proteins for prime/ boost studies显示文摘Smith DH Winters-Digiacinto P Mitiku M 2010PLoS One2010,5,12:1
13Effect of Soil and Water Conservation Measures on Selected Soil Physical and Chemical Properties and Barley (Hordeum spp.) Yield显示文摘Tadele Amdemariam Yihenew G. Selassie Mitiku Haile C. Yamoh 2011Journal of Environmental Science and Engineering2011,5,11:1
14Higher Education and Economic Growth in Africa显示文摘Gyimah-Brempong K Paddison O Mitiku W 0,,42:1
15Effectiveness of exclosures to restore degraded soils as a result of overgrazing in Tigray, Ethiopia显示文摘Wolde M Veldkamp E Mitiku H 2007Journal of Arid Environments2007,69,:1
16Expression of the surface glycoproteins of human parainfluenza virus type 3 by bovine parainfluenza virus type 3,a novel attenuated virus vaccine vector显示文摘Haller A A Miller T Mitiku M 2000J Virol2000,74,11:1
17Analysis and reporting of meningococcal meningitis epidemic in north Gondar 2001 - 2002 显示文摘Mengistu G Mitiku K Teferi W 2003Ethiop Med J2003,41,4:1
18Highereducation and economic growth in Africa显示文摘Kwabena Gyimah-Brempong Oliver Paddison Workie Mitiku 2006Journal of DevelopmentStudies2006,42,3:1
19The blood pressure response to dynamic exercise testing: a systematic review 显示文摘Le VV Mitiku T Sungar G 2008Progin CardiovaseDis2008,5,2:1
20Effectiveness of exclosure to restore degraded soils as a result of overgrazing in Tigray E thiopia显示文摘Wolde M Veldkamp E Mitiku H 2007Journal Arid Environment2007,69,:1
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费