Effects of Culture Area, Stocking Density, and Shrimp and Fish Polyculture on the Cost Efficiency of Hard Clam,Meretrix meretrix, Culture: A Case Study of Hard Clam Farms in Yunlin, Taiwan

2016 ◽  
Vol 47 (4) ◽  
pp. 481-495 ◽  
Author(s):  
Jung-Fu Huang ◽  
Ming-Tao Chou ◽  
Jie-Min Lee ◽  
Yung-Hsin Cheng
Keyword(s):  
Cost Efficiency ◽  
Stocking Density ◽  
Hard Clam ◽  
Meretrix Meretrix ◽  
Culture Area ◽  
The Cost

The Cost of Land Registration: a Case Study of Cost Efficiency in Namibia

2003 ◽  
Vol 48 (1) ◽  
pp. 7-20 ◽  
Author(s):  
W.T. de Vries ◽  
Y. Georgiadou ◽  
J. Lewis
Keyword(s):  
Cost Efficiency ◽  
Land Registration ◽  
The Cost

scholarly journals Dredging-induced shell damages to hard clam (Meretrix meretrix): a Malaysian case study

2018 ◽  
Vol 32 ◽  
pp. 1 ◽  
Author(s):  
Tan Kar Soon ◽  
Julian Ransangan
Keyword(s):  
Shell Length ◽  
Fishery Management ◽  
Sampling Methods ◽  
Hard Clam ◽  
Meretrix Meretrix ◽  
Community Based ◽  
Awareness Programs ◽  
Negative Impacts ◽  
Hard Clams

The hard clam (Meretrix meretrix) is a popular edible shellfish in South and Southeast Asia, being heavily exploited by hand dredging in Marudu Bay, Malaysia. The current study was performed to evaluate the shell damages caused by this artisanal dredging gear. Samplings were conducted in triplicates at two sites using both hand dredging and hand collecting (control) sampling methods. The shell length and total weight, damage areas and breakage patterns of each clam were recorded. A questionnaire survey was conducted with local bivalve harvesters to gather information on the fishing pressure in Marudu Bay. Results revealed that the efficiency (fishing yield) of hand dredging gear was three times higher than hand collecting. However, hand dredging gear causes lethal shell damages to small hard clams (<3cm in shell length). Hard clam harvesting is the main occupation of most fishermen in Kg. Popok, but most of them do not comply with the minimum harvesting size established by the fishery department. Moreover, most of the stakeholders are not aware of the negative impacts of hand dredging to the sustainability of the hard clam fishery in Marudu Bay. Therefore, organizing more awareness programs combined with introducing community-based fishery management are highly recommended to promote the sustainability of this artisanal fishery.

scholarly journals Impacts of culture survival rate on culture cost and input factors: Case study of the hard clam ( Meretrix meretrix ) culture in Yunlin County, Taiwan

2019 ◽  
Vol 51 (1) ◽  
pp. 139-158
Author(s):  
Chi‐Cheng Chang ◽  
Jung‐Fu Huang ◽  
Christian Schafferer ◽  
Jie‐Min Lee ◽  
Li‐Ming Ho
Keyword(s):  
Survival Rate ◽  
Hard Clam ◽  
Meretrix Meretrix

Framework to Assess an Area Control Centre's Operating Cost-efficiency: a Case Study

2015 ◽  
Vol 68 (6) ◽  
pp. 1088-1104
Author(s):  
Gonzalo Tobaruela ◽  
Wolfgang Schuster ◽  
Arnab Majumdar ◽  
Washington Y. Ochieng
Keyword(s):  
Cost Efficiency ◽  
Traffic Management ◽  
Planning Process ◽  
Operating Cost ◽  
Air Traffic Management ◽  
Air Traffic ◽  
Performance Area ◽  
The Cost

Cost-efficiency is a crucial Key Performance Area (KPA) in today's Air Traffic Management (ATM) system. Traditionally, research has mainly focused on the airport domain, with little attention being paid to the operating cost-efficiency of Area Control Centres (ACCs). This paper addresses this shortcoming and develops a framework to assess the cost-efficiency of an ACC from an operational perspective. It investigates how the resources of an ACC are managed, from the start of the planning process to the day of operation. The framework develops new metrics to assess an ACC's performance. A case study is carried out on the Maastricht Upper Area Control (MUAC) centre. Results show that, despite being one of the most advanced ACCs in Europe, the human workforce is operating at only approximately 50% of their full capabilities.

A generalized fuzzy cost efficiency model

2020 ◽  
Vol 54 (6) ◽  
pp. 1775-1791
Author(s):  
Nazila Aghayi ◽  
Samira Salehpour
Keyword(s):  
Cost Efficiency ◽  
Minimum Cost ◽  
Extensive Literature ◽  
Data Envelopment ◽  
Fuzzy Environment ◽  
Decision Making Unit ◽  
Production Possibility Set ◽  
Fuzzy Cost ◽  
The Cost ◽  
Generalized Cost

The concept of cost efficiency has become tremendously popular in data envelopment analysis (DEA) as it serves to assess a decision-making unit (DMU) in terms of producing minimum-cost outputs. A large variety of precise and imprecise models have been put forward to measure cost efficiency for the DMUs which have a role in constructing the production possibility set; yet, there’s not an extensive literature on the cost efficiency (CE) measurement for sample DMUs (SDMUs). In an effort to remedy the shortcomings of current models, herein is introduced a generalized cost efficiency model that is capable of operating in a fuzzy environment-involving different types of fuzzy numbers-while preserving the Farrell’s decomposition of cost efficiency. Moreover, to the best of our knowledge, the present paper is the first to measure cost efficiency by using vectors. Ultimately, a useful example is provided to confirm the applicability of the proposed methods.

Developing Schedule With Linear Programming (Case Study: STTF II Project Komplek Sukamukti Banjaran)

2020 ◽  
Vol 4 (02) ◽  
pp. 34-45
Author(s):  
Naufal Dzikri Afifi ◽  
Ika Arum Puspita ◽  
Mohammad Deni Akbar
Keyword(s):  
Linear Programming ◽  
Objective Function ◽  
Project Scheduling ◽  
Time Limit ◽  
Minimum Time ◽  
Service Cost ◽  
Trade Off ◽  
Overtime Work ◽  
The Cost

Shift to The Front II Komplek Sukamukti Banjaran Project is one of the projects implemented by one of the companies engaged in telecommunications. In its implementation, each project including Shift to The Front II Komplek Sukamukti Banjaran has a time limit specified in the contract. Project scheduling is an important role in predicting both the cost and time in a project. Every project should be able to complete the project before or just in the time specified in the contract. Delay in a project can be anticipated by accelerating the duration of completion by using the crashing method with the application of linear programming. Linear programming will help iteration in the calculation of crashing because if linear programming not used, iteration will be repeated. The objective function in this scheduling is to minimize the cost. This study aims to find a trade-off between the costs and the minimum time expected to complete this project. The acceleration of the duration of this study was carried out using the addition of 4 hours of overtime work, 3 hours of overtime work, 2 hours of overtime work, and 1 hour of overtime work. The normal time for this project is 35 days with a service fee of Rp. 52,335,690. From the results of the crashing analysis, the alternative chosen is to add 1 hour of overtime to 34 days with a total service cost of Rp. 52,375,492. This acceleration will affect the entire project because there are 33 different locations worked on Shift to The Front II and if all these locations can be accelerated then the duration of completion of the entire project will be effective

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