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This study aims to analysis the seasonal fluctuation fisheries assemblages and fishing yield by weight and amount of per unit effort using commercial shrimp beam trawlers at the waters off Yunlin, southwestern Taiwan during 1997-2007. In total, 47 sampling cruises, 320 taxa belonging to 205 genera and 102 families were identified. Among these, twelve species occurred greater than 80%. The species number of teleost fish were the most in each sampling. The total fish yield were 3032.9 kg and 304,680 individuals in the sampling period. Shrimps, the target species of the commercial beam trawler, were collected 945.7kg (31.2% of the total fish yield) and 181,050 individuals (59.4% of the total fish yield) , both are the most dominant fish yield among the fishing communities. The teleost fish (865.2 kg, 31.2%) and snails (73,868 individuals, 24.2%) were with the most fish yield in terms of weight and amount, respectively. The dominant species presented a seasonal pattern with a highly oscillation yield in both weight and biomass of the species in the same season each year. Thirteen species were recognized as the mainly harvested animals in of seasonal the commercial shrimp beam trawler. This study also showed that the shrimp, Parapenaeopsis hardiwckii, from February to May, and the portunid crab, Portunus sanguinolentus, from August to November in each year had the most production by cluster analysis. Since, the coastal zone at Yunlin were selected for constructing as an industrial park from May, 1998. Therefore in related to the development of the industrial park, to compare the production of 13 mainly harvest animals individually between three industrial developmental stages (pre-development: 1997.1-1998.2, development: 1998.5-2004.12 and post-development: 2005.2-2007.12). The results showed that the production of 3 species, Tanea lineate, Glossaulax didyma and Parapenaeopsis hardiwckii, decreased significantly (p< 0.05), where as of 2 fish species, Arius maculates and Chrysochir aureus, increased. By in large the other species was not remained the same after the construction.

A quota-based integrated commercial fishery owns fishing trawlers, processing plants, and fish quotas. Such a fishery must decide how to schedule trawlers for fishing and landing, how to schedule processing of products, how to schedule labour for processing, and how to plan inventory of raw materials and products. This problem is of great economic significance to New Zealand, whose economy depends to a large extent on the fishery industry. To assist the fishery manager, we develop a mixed integer linear program (MILP) for optimal scheduling of fishing trawlers, production planning (processing) and labour allocation for a quota-based integrated fishery of New Zealand. The model decides when and where each trawler should go for fishing, how much fish each trawler should land, and how much product to produce in each period. Since the fishery is a private farm, its main objective will be profit maximization (or cost minimization if its demand is on contract). The government manages the conservation of fish through the quota allocation. In this thesis the objective of the fishery model is to maximise the total profit. We demonstrate our model with examples based on data from a major New Zealand fishery. We investigate ways to manage the uncertainties involved in trawler scheduling and production planning of the fishery. To manage end-of-planning-horizon effects in the fishery, we develop a simple safety stock approach. We also analyse the workability of a rolling horizon approach to solve the longer planning horizon models and to deal with the end-of-planning horizon effects. We investigate the effect of initial and final position of the trawlers on the profit. We also investigated many different challenging data sets to observe the impact on the effectiveness of our IFPM. The second objective of this thesis is to develop an efficient solution procedure for the MILP, named integrated fishery planning model (IFPM). The IFPM consists of a fishing subproblem, a processing subproblem, and complicating side constraints. We have tried techniques including LP relaxation, Lagrangean relaxation (LR), Dantzig-Wolfe decomposition (DWD) and decomposition-based pricing (DBP). We develop a new DBP method to solve the IFPM. It gives excellent computation times. We also develop a decomposition-based O'Neill pricing (DBONP) method to improve the solution obtained from DBP procedure. It improves the DBP solutions but takes longer time to solve the IFPM. Finally, we develop a simple and efficient reduced cost-based pricing (RCBP) method. It takes less time to solve the IFPM and yields excellent results. The initial formulations for several planning horizons are solved using the AMPL modelling language and CPLEX with branch and bound. Relevant results and computational difficulties are reported.

Thesis (MBA) -- Stellenbosch University, 1994. / Stellenbosch University. Faculty of Economic and Management Sciences. University of Stellenbosch Business School. / ENGLISH ABSTRACT: The trawler industry is on the brink of proserity. This progress will result in both the trawler industry and the state amending their policy formulation to adapt to changing circumstances. The government will, for instance, have to consider subsidising the building of boats and the establishment of infrastructure, which is becoming increasingly expensive, and is already being done abroad. On the other hand, planning and organisation of trawler industries will have to be done in close consultation with the government, who is in fact responsible for fish sources. This will result in an enormous responsibility for the government, who will have to improve research on fish resources and availability of fish species. This information is of the utmost importance to trawler industries that have to plan for future production and sales. The progress of trawler industries is not just influenced by the government but also by their own internal planning. Future development will definitely require more capital outlay from industries in the form of modernized catching and processing equipment. In the present-day highly competitive and rapidly changing environment it is difficult to generate funds if no assets can be shown. Smaller enterprises that are not financially strong enough to establish their own infrastructure, should consider amalgamation with other small or large enterprises. The author is of the opinion that the possibility to obtain the necessary funds for the establishment of an own infrastructure without the required security, should exist with an efficient business plan. Insufficient planning in new enterprises is possibly the major contributing factor towards failure. Without investing capital at this early stage, new ideas can be tested on paper by means of planning. A literature study was undertaken to evaluate the opinions of various authors on a business plan. Factors for success in a good business plan were highlighted as follows: keep the business plan brief; do not over-diversify the enterprise; avoid describing technical products and manufacturing process in a way only comprehensible by an expert; organise and wrap the business plan effectively; the plan must be future orientated; avoid exageration; highlight critical risks; discuss and include any relevant problems; take care that the business plan is as complete as possible; and identify the target market and avoid ambiguous, vague and unrealistic statements. A business plan has been compiled for the purpose of this study. using the preceding information. Finally, a recommendation regarding future capital absorption and extension has been made to the company concerned. / AFRIKAANSE OPSOMMING: Die treilbedryf staan op die drumpel van vooruitgang. Hierdie vooruitgang gaan meebring dat beide die treilondernemings en die Staat hul beleidsformulering sodanig sal moet verander om aan Ie pas by die veranderende omstandighede. Die Staat sal byvoorbeeld daaraan moet dink om die bou van bote, wat at hoe duurder word, en die oprigting van infrastruktuur te subsidieer. iets wat weI in die buiteland gedoen word. Aan die anderkant sal beplanning en organisasie van treilondememings in nouer kontak met die Staat, wat verantwoordelik is vir die beheer van visbronne, moet geskied. Dit plaas 'n geweldige taak op die skouers van die Staat, want by sal beter navorsing moet doen oor visbronne en die beskikbaarheid van vissoorte. Hierdie inligting is van groot belang vir treilondememings wat moet beplan vir produksie en verkope in die toekoms. Die vooruitgang van treilondememings word egteT nie slegs deuT die Staat beinvloed nie, maar ook deur hul eie interne beplanning. Toekomstige ontwikkeling gaan definitief meer kapitaal van ondememings verg in die vorm van beter en meer modeme vang- en verwerkingstoerusting. In vandag se hoogs kompeterende en snelveranderende omgewing is dit moeilik om fondse te genereer veral as geen bates getoon kan word nie. Klein ondememings wat nie kapitaalkragtig genoeg is om 'n eie infrastruktuur op te rig nie, moet dit gewoonlik oorweeg om met ander klein of groot ondememings te amalgameer. Die navorser is van mening dat met behulp van 'n goeie besigheidsplan daar wei 'n moontlikheid behoort te bestaan om die nodige fondse, sonder die vereiste sekuriteit, te bekom om sodoende 'n eie infrastruktuur op te rig. 'n Gebrek aan beplanning by nuwe ondernemings is waarskynlik een van die grootste enkele bydraende faktore tot mislukking. Deur beplanning kan nuwe idees op papier op proef gestel word sonder om kapitaal op hierdie vroee stadium te investeer. 'n Literatuur ondersoek is onderneem om verskillende skrywers se menings ten opsigte van 'n besigheidsplan te evalueer. Suksesfaktore vir 'n goeie besigheidsplan is dan ook uitgelig: • hou die besigheidsplan kort; moet nie die onderneming oor-diversifiseer nie; venny dit om die tegniese produkte en vervaardigingsproses op so 'n manier, dat net 'n kundige dit kan verstaan, te beskryf; organiseer en verpak die besigheidsplan doelmatig; orienteer die plan volgens die toekoms; venny oordrewendheid; lig kritieke risiko's uit; bespreek en sluit enige toepaslike probleme in; sorg dat die besigheidsplan so kompleet as moontlik is; identifiseer die teikenmark en venny dubbelsinnige, vae en onwerklike stellings. Met hierdie kennis as agtergrond is 'n besigheidsplan opgestel wat vir die doel van hierdie studie gebruik is. Ten slotte is 'n aanbeveling aan die betrokke maatskappy gemaak met die oog op toekomstige kapitaalopneming en uitbreiding.

The study is developed from five in-depth interviews with individuals from different walks of life who have interacted significantly with the North Sea. The study discusses change in the North Sea specifically in the development of fixed turbine wind farms and their physical and aesthetic effects. Observations speakers make as to changes in the North Sea and as to its beauty are contextualised and discussed using NASA satellite images, photographs and review of available academic literature, UK policy documents and law. This context includes a study of the industrialised North Sea with reference to the sediment sea plumes behind monopile turbines. The United Kingdom was selected for particular study of its wind farm development permissions process, including evaluations of seascape and the requirement of independence for expert evidence. Decline of trawler access to the North Sea is referenced to wind farm growth, and to adverse changes in public opinion leading to closure of the UK Dogger Bank to trawlers. Finality of wind farm development decisions is considered against the prospect of overturn by the courts. This aspect covers the application and development of principles relating to appeal by way of judicial review in the UK jurisdictions of Scotland, England and Wales, and Northern Ireland. The study identifies, and explains the English aesthetic evaluation of wind farms. It concludes that sea plumes are the result of a legal choice to allow permit applications to succeed without testing by reference to detailed in-sea turbine dimensions. In the permissions process (a) sea plumes are not evaluated by the seascape criteria applicable to coastal or off-coastal wind farms (b) deep offshore wind farms are instead evaluated by possible changes to character of the sea. The study further concludes that (i) the open horizon of the North Sea has been lost in significant part (ii) the combined aesthetic of transience, decay, and nostalgia underlies the aesthetic of the North Sea Maunsell forts (contrasted to Sealand), and also underlies attitudes to decommissioning wind farms, and (iii) concepts of sea beauty may be based on appearance or health, being regulated by different legal regimes in each eventuality (respectively the European Landscape Convention, or the OSPAR/ biodiversity/ habitat initiatives)