著者
千葉 雄司 大石 圭一 永井 佑樹 中川 満
雑誌
情報処理学会論文誌プログラミング(PRO) (ISSN:18827802)
巻号頁・発行日
vol.12, no.1, pp.1-9, 2019-01-30

RL78マイコンのようなアキュムレータマシンでは,多くの命令において,オペランドとして使えるレジスタがアキュムレータのみとなっており,その結果,命令スケジューリングの際に,命令を単独で移動しようとしても,アキュムレータに関する依存に移動を阻まれることが多い.この問題を回避して命令をスケジュールする方法として,移動の対象を,単独の命令ではなく,命令列,具体的には,アキュムレータに値を代入する命令から,代入した値を最後に利用する命令までの命令列にする方法を提案する.提案した方法をRL78マイコン向けCコンパイラ製品CC-RLの命令スケジューラに適用し,その効果を,CoreMarkやFFT,SHA256などのベンチマークによって評価したところ,最大で2.12%実行を高速化できることが分かった.
著者
大石 圭一 平沖 道治
出版者
公益社団法人 日本水産学会
雑誌
日本水産学会誌 (ISSN:00215392)
巻号頁・発行日
vol.37, no.10, pp.1020-1030, 1971-10-25 (Released:2008-02-29)
参考文献数
57
被引用文献数
4 3
著者
大石 圭一 森 一雄 西浦 康雄
出版者
公益社団法人 日本水産学会
雑誌
日本水産学会誌 (ISSN:00215392)
巻号頁・発行日
vol.40, no.12, pp.1241-1250, 1974-12-25 (Released:2008-02-29)
参考文献数
10
被引用文献数
6 8

Larvae of Anisakis type I, Terranova type A and Contracaecum type A were gathered from liver, muscle and caecal pylorus of cod and Alaska pollack, respectively, and their mortalities were examined in a medium containing various spice essential oils and some food preservatives.The results were as follows;Pesticidal effects on Anisakis type I larvae were exhibited by the essential oils of nutmeg, cumin, clove, allspice, mace, coriander, and cinnamon. In addition, the essential oils of cumin, clove, allspice, coriander, cinnamon, thyme, dill and caraway showed a similar effect on Terranova type A larvae. Cumin aldehyde, cinnamic aldehyde, thymol, limonene, and eugenol, which are major components of some spices, exhibited strong pesticidal effects on all the three species of worms. The above results were regarded as significant by variance analysis.On the other hand, the pesticidal effects of the food preservatives on Anisakis type I larvae were observed only in the case of free acids such as sorbic acid, salicylic acid, benzoic acid and dehydroacetic acid.
著者
大石 圭一 岡 重美
出版者
公益社団法人 日本水産学会
雑誌
日本水産学会誌 (ISSN:00215392)
巻号頁・発行日
vol.37, no.10, pp.976-980, 1971-10-25 (Released:2008-02-29)
参考文献数
8
被引用文献数
1

Kombu, a palatable seaweed belonging to Laminariaceae, has often been used as a seasoning material for soups or vegetables in authentic Japanese cookery. The soup is especially rich in nutrients for bacterial growth. Therefore studies on the food hygiene of kombu extract were undertaken. The growth of bacteria adhering to the surface of kombu was observed in an extract of the plant. The following food poisoning bacteria, Salmonella enteritidis, Staphylococcus aureus, Vibrio parahaemolyticus, Clostridium perfringens and Cl. botulinum, were inoculated in kombu extract or artificial kombu medium. When the bacterial counts of cultures in natural kombu medium were compared with those in artificial medium, no remarkable differences in growth were observed in any of the bacterial species used. Judging from the experimental results, attention should be paid to contamination with S. enteritidis and St. aureus. With respect to the other three food poisoning bacterial species, the extract was considered to be relatively safe in food hygiene under the experimental conditions.