Pipelining of register transfer netlists

This paper describes a method for pipelining of register-to-register netlists. We define algorithms for inserting latches in a data path, both inside each unit and between the units as well as between control logic and the data path and for readjusting the state transition table. Experimental results on several benchmarks show 30%-40% improvement in performance

Microarchitecture optimization for timing and layout

In recent years the drive to produce more complex integrated circuits while spending less design time has driven the demand for design automation tools. The search for design automation methods has resulted in the design of numerous behavioral synthesis and logic synthesis tools. This report describes a system that fills the gap between traditional behavioral synthesis and logic synthesis tools. Techniques are introduced for improving the microarchitecture structure and using feedback from lower-level optimization tools to guide design optimizations while attempting to meet user specified area and time constraints. These techniques include the capability for mixing layout styles such as custom layout for random-logic components and bit-slicing for regularly structured components. In this manner the entire design, control logic and datapath, can be optimized at the same time. Further, this paper presents a new methodology for microarchitecture-level optimization that greatly reduces the amount of technology-specific knowledge necessary to perform the optimizations

Pipelining of register transfer netlists

This paper describes a method for pipelining of register-to-register netlists. We define algorithms for inserting latches in a data path, both inside each unit and between the units as well as between control logic and the data path and for readjusting the state transition table. Experimental results on several benchmarks show 30%-40% improvement in performance

Microarchitecture optimization for timing and layout

In recent years the drive to produce more complex integrated circuits while spending less design time has driven the demand for design automation tools. The search for design automation methods has resulted in the design of numerous behavioral synthesis and logic synthesis tools. This report describes a system that fills the gap between traditional behavioral synthesis and logic synthesis tools. Techniques are introduced for improving the microarchitecture structure and using feedback from lower-level optimization tools to guide design optimizations while attempting to meet user specified area and time constraints. These techniques include the capability for mixing layout styles such as custom layout for random-logic components and bit-slicing for regularly structured components. In this manner the entire design, control logic and datapath, can be optimized at the same time. Further, this paper presents a new methodology for microarchitecture-level optimization that greatly reduces the amount of technology-specific knowledge necessary to perform the optimizations

Record body size of the beach conger Conger japonicus (Anguilliformes: Congridae) in the East China Sea

A record body size, length of 1520 mm and weight of 12,600 g for the beach conger, Conger japonicus was recorded, which is approximately 120 mm and 2600 g larger than the previous international record. The specimen was female and obtained during an otter trawl survey on 4 April 2013 in the East China Sea (31°52.16′N 127°42.94′E) at a depth of approximately 140 m on the slope of the continental shelf. Morphometric measurements and meristic counts are reported in this paper. We also report profiles of water temperature, salinity, dissolved oxygen and chlorophyll-a taken immediately prior to the trawl, and species composition of concurrent catch with the otter trawling as environmental and biological characteristics of the habitat

Length-weight relationships of 22 fish species from the East China Sea

Estimated length-weight relationships are presented for 22 commercially important marine fish species representing nine families, found in the East China Sea. A total of 2776 specimens were caught by otter trawl on the continental shelf in the East China Sea between 2009 and 2013. Information pertaining to length-weight relationships should lead to a better understanding of fish communities in the East China Sea

有明海における卵稚仔輸送過程の数値モデル

A hydrodynamic model was coupled to a particle tracking model to examine physical factors thatinfluence transport of the white croaker larvae in the Ariake Sea, Kyushu, Japan. The idealized particlesthat mimic the larvae of white croaker are tracked under various physical and biological conditions.Freshet reduces the possibility of particles that reach the nursery ground around the head of the bayby 7 % on average. Spring tide has a positive impact on the feeding migration of particles. Selective tidalstream transport (STST) mechanism dramatically changed particle trajectories. Particles tend to reachthe shallower nursery ground easier during ebb or low tide rather than high or flood tide, depending onwhether the STST is considered during the particle tracking experiment. In particular, the ratio of thenumber of particles that reach the nursery ground increases by approximately 24 % from flood tide tolow tide. When the sinking velocities of particles, ranging from 10-5 to 10-3 m/s, are considered during theparticle tracking experiment, majority of the particles stayed in the releasing area.海洋数値シミュレーションモデルと粒子追跡モデルを用いて，物理的要因が有明海の仔魚輸送に及ぼす影響について調べた。モデルにおいて仔魚は仮想的流体粒子として表現される。河川水の出水は生育場へ輸送される粒子数を７%減少させる。大潮時に潮流流速が増すことによって，生育場へ輸送される粒子数は増加する。稚魚の鉛直移動の効果（Selective tidal stream transport）によって，粒子の輸送過程は大幅に変化する。干潮時や下げ潮時に投入された粒子は，より生育場へ到達しやすくなる傾向がある。10-5から10-3m/sの範囲で粒子の沈降速度を加味した場合，粒子は放流地点付近にとどまる傾向が強くなる