abstract regarding temporal variation of rivers discharge and demands, for suitable use of dam reservoirs stored water, application of operation rule curves is necessary. operation rules are expressed with rule curves. application of yield model is one of the methods of operation curve preparation, which correlates reservoir operation with reservoir storage volume in first period. in this study...

In this study a simulation-optimization model is developed for deriving operation rule-curves in drought ‎periods. To each reservoir, two rule-curves with adjustable monthly levels are introduced dividing the ‎reservoir capacity into three zones between the normal water level and minimum operation level. To each ‎zone of a reservoir and for each month of the year a hedging coefficient is introd...

Drought is an inevitable part of the world’s climate. It occurs in wet as well as in dry regions. Therefore, planning for drought and mitigating its impacts is essential. In this study, a hedging rule is developed using the zero/one mixed integer-programming approach. Furthermore, some procedures are introduced to ease the computational burden inherent in integer programming. Hedging rules are ...

Fisheries are important in Sri Lanka as a food sector as well as an export sector. The main export fish species is yellowfin tuna and main markets are Japan, EU countries and the USA. Yellowfin tuna and swordfish are high in the aquatic food web, therefore accumulation of trace metals can occur. The export goods quality and safety should comply with the WTO, national, regional and international...

BACKGROUND Qualitative research methods are increasingly used within clinical trials to address broader research questions than can be addressed by quantitative methods alone. These methods enable health professionals, service users, and other stakeholders to contribute their views and experiences to evaluation of healthcare treatments, interventions, or policies, and influence the design of tr...

PURPOSE To compare suprapubic open prostatectomy (SOP) and a novel SOP with transurethral adjustment of residual adenoma and bleeding (TURARAB) for large sized prostates. METHODS Between March 2010 and March 2014, 49 patients with symptomatic BPH (>100 g) were scheduled for SOP or SOP with TURARAB. The patients were subdivided into two groups. In Group I, each patient underwent SOP. In Group ...

Standard operating policy and hedging policies are commonly used for reservoir operation for municipal or irrigation water supply. Application of these policies to hydropower reservoir operation is complex. In this paper, new standard operating policies and standard hedging policy are proposed for hydropower reservoir operation. The newly proposed policies were applied to the operation of Indir...

Abstract This paper aims to improve summer power generation of the Yeywa Hydropower Reservoir in Myanmar using modified multi-step ahead time-varying hedging (TVH) rule as a case study. The results TVH rules were compared with standard operation policy (SOP) rule, binary (BSOP) discrete (DH) (SH) one-point (OPH) and two-point (TPH) rule. Multi-Objective Genetic Algorithm (MOGA) was utilized dri...

To ensure the confidentiality and integrity of web content, modern web browsers enforce isolation between content and scripts from different domains with the same-origin policy (SOP). However, many web applications require cross-origin sharing of code and data. This conflict between isolation and sharing has led to an ad hoc implementation of the SOP that has proven vulnerable to such attacks a...