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	An analysis of first-time and repeat visitors to Korean national parks from 2007 and 2013 期刊论文 OAI收割 Journal of Mountain Science, 2017, 卷号: 14, 期号: 12, 页码: 2527-2539 作者: Yunseon CHOE; Michael A. SCHUETT; Kyu-Won SIM \| 收藏 \| 浏览/下载：140/0 \| 提交时间：2017/12/07 ThIs Paper ExamIned VIsiTors To Bukhansan NatiOnal Park In Korea Based On First-time And Repeat vIsitatiOn. Bukhansan NatiOnal Park Is Korea's Most Heavily vIsited NatiOnal Park With Annual vIsitatiOn Of Six milliOn VIsiTors In 2015. Data Used In ThIs Article Were Collected On-site In The Park In 2007 And 2013 By The Korea NatiOnal Park Service (Knps). The Study Variables Included Socio-demographics Travel Behavior Motivation And Satisfaction With Park Attributes Services And Facilities. Data Were Analyzed By Each Study Year For First-time And Repeat Visitors. Results Showed Significant Differences For Both First-time And Repeat Visitors.On Several Socio-demographic Travel Behavior And Motivation Variables Within Each Study Year. For Satisfaction With Park Attributes Facilities And Services First-time VisiTors Were Significantly Different From Repeat VisiTors On Seven Variables For Both Years. implicatiOns Are Given Regarding Programs And Services To Improve visiTor satisfactiOn And Sustain The Natural Cultural And HisTorical Resources At Bukhansan nAtional Park And Other nAtional Parks In Korea. Future Research Suggestions Are Provided To Learn More About visiTor Characteristics StAndards Of Quality And Preferences In The National Parks.
	Relative influence of sediment variables on mangrove community assembly in Leizhou Peninsula, China 期刊论文 OAI收割 MARINE POLLUTION BULLETIN, 2017, 卷号: 117, 期号: 2018-01-02, 页码: 429-435 作者: Liu, Jing; Qu, Laiye; Ma, Keming \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2018/07/20 Canonical Correspondence Analysis Mangrove Vegetation Sediment Physicochemical Variables Heavy Metal Variation Partitioning Significant Variables
	红树林湿地生态退化综合评价学位论文 OAI收割博士, 北京: 中国科学院研究生院, 2015 作者: 刘静收藏 \| 浏览/下载：41/0 \| 提交时间：2017/01/11 红树林湿地 Zhanjiang mangrove swamp 重金属 heavy metals 群落特征 vegetation community characteristics 显著性影响因子 significant variables 生态退化 ecological degradation 指标体系 indicator systems
	Effects of fabricated error on transmission performance of double screens cross loop slot FSS configuration (EI CONFERENCE) 会议论文 OAI收割 2006 7th International Symposium on Antennas, Propagation and EM Theory, ISAPE 2006, October 26, 2006 - October 29, 2006, Guilin, China 作者: He B. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 This paper proposes that the inter-layer separation distance (ISD) and the unit cell aligning error (UAE) are used as main variables to study the transmission performance attenuation of the double layer FSS configuration. The numerical analysis model for ISD and UAE was established and also was used to simulate the cross loop slot cell FSS transmission performance by the finite element and periodic moment method program. The double layer cross loop aperture FSS configuration designed was used as the numerical model. As a result of the numerical analysis it is shown that both ISD and UAE produce insertion transmission loss (ITL) and insertion phase distortion (IPD) directly. Furthermore ISD results in much loss of the amplitude of the transmitted signal for the FSS than UAE. It is significant for the designer for the multiplayer FSS to assign the fabricated error of the FSS dielectric layers. The UAE introduces the insertion phase variation badly.