Making Landfall: Linkages between Fishing Communities and Support Services

The relationship between the fishing industry and the fisheries-related support service sector creates economic benefits for communities through the strong linkages between fishermen and their land-based suppliers and the induced or multiplier effects from fisheries revenue. The support service sector is embedded within fishing communities where the impacts of fisheries management changes are perpetuated. This article examines the potential for such impacts by evaluating the diversity of fishing gear use, ex-vessel revenue, presence of processing plants, public moorage, and haul-out or tidal grids, and the number of vessels in a community, in relation to the availability of support services in communities in Alaska. The results show that the presence of a processor and haul-out facilities in a community significantly affects the number of support service businesses; however, there is not a strong association with the number of vessels or ex-vessel revenue. One hypothesis is that fishermen often travel to other communities to obtain services. We evaluate this hypothesis using social network analysis to evaluate transfers of revenue for fishery-related goods and services. Ultimately, this informs the exploration of the importance of support service businesses and fishery-support infrastructure to the continued well-being of fishing communities.     

Planning for Cruise Ship Resilience: An Approach to Managing Cruise Ship Impacts in Haines,Alaska

Resilience theory has management implications useful when planning for cruise ship tourism. In small coastal communities, cruise ships often provide welcomed economic incentives that can bolster a waning economy. However, in some coastal communities, the magnitude and intensity of passenger visits can reduce social resilience and induce an economic regime shift that leads to rapid socioeconomic reorganization. The implications of such a regime shift are a loss of economic diversity, reduced social resilience, and a loss of social capital. Planning for cruise ship resilience increases the likelihood of successful coping strategies and addresses the socioecological changes inherent to a cruise ship destination. Both Holling's adaptive cycle and the four principals for building resilience established by Berkes and Seixas are fundamental to a successful management plan.     

现代化渔港产业业态分析

国内外诸多地区正致力于打造多功能现代化渔港,但在建设过程中对产业业态和功能定位仍不很清晰。为此,在分析渔港传统功能及其功能多元化趋势的基础上,研究现代化渔港的功能定位和产业业态。认为现代化渔港需要在规划设计时统筹考虑渔港和周边区域,围绕远洋渔业基地、避风避险基地、执法维权基地、海洋科考产业基地以及渔港旅游休闲产业,打造\"渔港产业经济综合体\",为现代化渔港的建设提供参考,提升渔港建设水准。     

对于渔船避让的几点见解

阐述了大连——日本航线上经常遇到的渔船种类及作业特点,总结出针对不同种类的渔船在捕捞过程中应采取的必要措施,为以后在该航线上行驶的远洋船舶驾驶人员提供经验借鉴。     

202kW玻璃钢拖网渔船电气设计

简要介绍２０２ｋＷ玻璃钢拖网渔船的总体结构和主要技术参数,并就船电设计有关的电制、电站、配电、动力、报警装置、防无线电干扰措施、避雷、接地保护、电缆选用、无线电通信、导航、助渔设备配备等问题作了系统阐述。     

基于单片机在渔业船舶随动舵控制系统的设计

介绍单片机在渔业船舶随动舵控制系统中的应用,针对目前渔业船舶随动舵的故障情况,采用一款高性能,强抗干扰的单片机对渔业船舶随动舵控制系统进行改进。经试验检测．控制精度和稳定度比原系统有了很大的提高并获得了良好的控制效果。     

漏洞检测静态分析方法的优化策略

目前软件漏洞静态解决方案大都有针对性的检测某些方面的软件漏洞,无法做到全面、高效、准确的检测出所有漏洞。通过讨论目前已有的一些漏洞检测技术与工具,并研究这些工具与技术各自存在的优势与缺陷。在此基础上提出改进漏洞检测静态分析的优化策略。     

远洋渔船营运作业的碳排放计算方法

通过分析远洋渔船复杂工况下的能源消耗特性,并结合政府间气候变化专门委员会的评估报告和全球变暖潜值,提出远洋渔船营运作业过程中的碳排放计算方法,提出远洋渔船低碳节能的建议和措施。     

基于BP神经网络的渔港评估指标体系简化

为使渔港管理部门在进行渔港初步评估时节省人力、物力,对渔港评估指标体系进行简化,应用BP神经网络进行渔港评估。简化后的指标体系繁简适中,科学合理,结果符合实际,可供有关部门对渔港进行管理决策时参考。     

渔船型线优化及水动力性能研究

基于fluent数值模拟和模型试验相结合的方法,对某一渔船进行型线优化,通过CFD仿真技术进行多方案船型优选,开展船模试验以验证仿真结果,以优选出来的船型为基础进行艉部和球鼻艏的改型,并再次通过模型试验量化改型的效果。型线优化后明显改善了阻力、推进水动力性能,取得了较好的结果。     

Potential Benefits of Coastal Ocean Observing Systems to Alaskan Commercial Fisheries

In this article we attempt to illustrate the potential benefits to Alaskan commercial fisheries expected from enhancements to the Alaska Ocean Observing System (AOOS) through changes in fishery management strategies. In particular we show how the use of improved AOOS data in research, stock assessment, and ultimately fisheries management has the potential to result in significant benefits in the Bering Sea and Gulf of Alaska groundfish and Kodiak king crab fisheries. We show through a case study approach that information such as might be provided by an enhanced AOOS could conceivably contribute over $600 million in additional annual revenue in Alaska's groundfish fishery. In addition we estimate that had the information from such a system been available in the 1970s and 1980s the Kodiak king crab stock collapse could have been avoided and $60 million in annual revenues generated. Benefit estimates (as measured by revenue increases) are based on the assumptions that when better data is delivered those data will be integrated into stock assessment models; when better data are integrated into the models the new data will actually improve the reliability of the models; and when the reliability of the models is improved predictions will be accepted by managers or industry members.     

关于自主建造远洋综合捕捞船的思考

着眼于服务我国世界第一造船强国的战略,在阐述我国自主建造远洋综合捕捞船必要性的基础上,分析国内外远洋综合捕捞船建造的现状及面临的问题,提出了针对我国自主建造远洋综合捕捞船的对策和建议。     

A Bayesian Methodology for Estimating the Impacts of Improved Coastal Ocean Information on the Marine Recreational Fishing Industry

The study develops a model of recreational fish catch probabilities, based on angler fishing strategies, that is conditional on uncertain information about the coastal ocean environment. We calculate expected catch based on a hypothetical Baseline Data Set and hypothetical data from an Integrated Ocean Observation System (IOOS) to demonstrate potential benefits from IOOS. The role of Bayesian probabilities in Random Utility Models of recreational fishing is identified. The study discusses the types of information that will be required by recreational anglers in the Gulf of Mexico. Results have implications for the construction of ocean observation systems for recreational fishermen.