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Browsing by Author "Takahashi, Norio"

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A check of operating model predictions from the viewpoint of the management procedure implementation in 2016

Author: Takahashi, Norio ; Kurota, Hiroyuki ; Sakai, Osamu ; Itoh, Tomoyuki ; Butterworth, Doug S Date: 2016 Values of the core vessels’ longline CPUE and aerial survey (AS) indices (two required inputs to the Bali management procedure) are compared to projection results obtained from the operating model (OM). Recent observations for the CPUE index ... Read more
A check of operating model predictions from the viewpoint of the management procedure implementation in 2017

Author: Takahashi, Norio ; Sakai, Osamu ; Kurota, Hiroyuki ; Itoh, Tomoyuki ; Butterworth, Doug S Date: 2017 Values of the core vessels’ longline CPUE and aerial survey (AS) indices (two required inputs to the Bali management procedure) are compared to projection results obtained from the SBT operating model (OM). The most recent observations for ... Read more
Conditioning of the SBT operating model to inform projection specifications

Author: Sakai, Osamu ; Kurota, Hiroyuki ; Takahashi, Norio ; Butterworth, Doug S Date: 2011 The effects of updates on the operating model are examined. Because of the new growth schedule and the most recent two years’ data, the operating model prefers somewhat higher steepness compared to the previous version. This difference has ... Read more
Further evaluation of empirical management procedures based on longline CPUE index and aerial survey index

Author: Kurota, Hiroyuki ; Fujioka, Ko ; Sakai, Osamu ; Takahashi, Norio ; Butterworth, Doug S Date: 2010 Based on recommendations made during the third Operating Model and Management Procedure Technical Meeting (June 2010, Seattle), we have revised and evaluated “HK” Management Procedures (MPs) using empirical algorithms to determine TACs using ... Read more
Further examinations of the SBT operating model to explore new tagging model and grid specifications

Author: Kurota, Hiroyuki ; Sakai, Osamu ; Takahashi, Norio ; Butterworth, Doug S Date: 2009 Stock assessments and constant catch projections were conducted using new Operating Models (OMs; sbtmod21 and sbtmod22, which have different tagging models) developed by the CCSBT ESC. The current analysis showed that: 1. a new candidate for ... Read more
Performance of the empirical management procedure (MP2) under the updated operating models

Author: Kurota, Hiroyuki ; Takahashi, Norio ; Sakai, Osamu ; Butterworth, Doug S Date: 2011 We evaluated the performance of the empirical management procedure (MP2) using the updated operating model (reference set and robustness trials). In order to meet management targets, TACs need to be increased steadily and substantially under ... Read more

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Browsing by Author "Takahashi, Norio"

Browsing by Author "Takahashi, Norio"

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