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三维观测系统野外现场设计 被引量:1
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作者 杨序斌 《江汉石油职工大学学报》 2017年第4期5-7,共3页
在复杂地表区进行地震采集施工十分困难,主要表现为地表障碍造成的空炮或空道形成剖面缺口及对目的层有效覆盖次数、地震资料品质的影响。在地震采集野外现场设计中,本着安全、质量、超前(设计)、技术、成本等"五大意识",把... 在复杂地表区进行地震采集施工十分困难,主要表现为地表障碍造成的空炮或空道形成剖面缺口及对目的层有效覆盖次数、地震资料品质的影响。在地震采集野外现场设计中,本着安全、质量、超前(设计)、技术、成本等"五大意识",把握好工区全信息收集的各个环节,并根据障碍物的特殊情况,以尽可能减少恢复放炮距离、剖面缺口及炮点分布均匀为原则,灵活运用纵横向变观方法,有效地降低了地震采集复杂困难地表对施工质量的影响,保证了资料品质。 展开更多
关键词 三维观测系统 现场设计 复杂地表 全信息收集
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A Descriptive Research With Family Farmers' Beneficiaries and Non-beneficiaries of the PRONAF in the Municipality of Itapuranga, State of Goias, Brazil
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作者 Waltuir Batista Machado Luiz Manoel de Moraes Camargo Almeida Odilon Jose de Oliveira Neto 《Sociology Study》 2013年第4期289-299,共11页
This article is a part of a descriptive survey which aims to characterize, classify, and compare the household production in the Municipality of Itapuranga, State of Goias, Brazil, considering the access to the Nation... This article is a part of a descriptive survey which aims to characterize, classify, and compare the household production in the Municipality of Itapuranga, State of Goias, Brazil, considering the access to the National Program for Strengthening Family Agriculture (PRONAF) and its respective differentiation between beneficiary and non-beneficiary groups by the program. It applied the technique of group comparison analysis and frequency inquiry, taking into consideration several variables. Information about the origin, distribution and total income, food safety, land property, production diversification, expenditures and participation in social organizations were collected. The sample consisted of 70 producers, the calculation sample was defined by determined value at the confidence level of 90% whereas the sampling error of 7%. The results allowed describing, classifying, characterizing, and comparing the socio-economic and productive profile of farmers from that area and their access to PRONAF. 展开更多
关键词 Agricultural funding family agriculture food safety PRONAF public policy
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