A5052827570- Diffusion and Search Dynamics
- Animal Behavior and Reproduction
- Insect and Arachnid Ecology and Behavior
- Evolutionary Game Theory and Cooperation
- Crustacean biology and ecology
- Marine and fisheries research
- Ecosystem dynamics and resilience
- Animal Vocal Communication and Behavior
- Distributed Control Multi-Agent Systems
- Crystallization and Solubility Studies
- Evacuation and Crowd Dynamics
- Mathematical and Theoretical Epidemiology and Ecology Models
- Cephalopods and Marine Biology
- Evolutionary Algorithms and Applications
- X-ray Diffraction in Crystallography
- Hemiptera Insect Studies
- Plant and Biological Electrophysiology Studies
- Crystallography and molecular interactions
- stochastic dynamics and bifurcation
- Metaheuristic Optimization Algorithms Research
- Porphyrin and Phthalocyanine Chemistry
- Supramolecular Chemistry and Complexes
- Coral and Marine Ecosystems Studies
- Paranormal Experiences and Beliefs
- Psychedelics and Drug Studies
Shinshu University
2014-2024
Ōtani University
2010-2022
Kobe University
1991-2004
Reproductive Science Center
2004
Massachusetts General Hospital
2004
Emergent behavior that arises from a mass effect is one of the most striking aspects collective animal groups. Investigating such would be important in order to understand how individuals interact with their neighbors. Although there are many experiments have used animals investigate social learning or conflict between and society as fish school, reports on effects rare. In this study, we show swarm soldier crabs could spontaneously enter water pool, which usually avoided, by forming densely...
In recent years, various animal observation instruments have been developed to support long-term measurement and analysis of behaviors. This study proposes an automatic instrument that specializes for turning behaviors pill bugs aims obtain new knowledge in the field ethology. Pill strongly tend turn opposite direction a preceding turn. alternation is called reaction. However, repetition turns same reaction has considered malfunction alternation. this research, authors turntable-type...
OBJECTIVE: Adrenomedullin (AM) has diverse functions and is expressed in a variety of tissues. This study was conducted to investigate the expression AM human ovary its effect on progesterone production by granulosa lutein cells. DESIGN AND METHODS: Follicular fluid blood samples were obtained at time oocyte retrieval from patients undergoing vitro-fertilization cycles. Concentrations follicular plasma measured RIA. Granulosa cells isolated mRNA examined RT-PCR. cultured vitro secretion...
Betacellulin (BTC), purified and cloned from mouse beta cell tumor (BTC-JC10), is regarded as a new member of the epidermal growth factor family. The present study was conducted to clarify expression BTC its receptors, ErbB-1 ErbB-4, in trophoblasts human placenta over course pregnancy.Human placental tissues were obtained 4 pregnant women at 4th 5th week pregnancy (very early placentas), 10 6th 12th (early 5 18th 21st (mid placentas) 8 38th 40th (term placentas). mRNA expressions BTC,...
The L\'evy walk, a type of random walk characterized by linear step lengths that follow power-law distribution, is observed in the migratory behaviors various organisms, ranging from bacteria to humans. Notably, walks with power exponents close two are frequently observed, though their underlying causes remain elusive. This study introduces simplified, abstract model designed produce inverse square walks, also known as Cauchy and explores conditions facilitate these phenomena. In our model,...
Mictyris guinotae is endemic to the Ryukyu Islands, Japan. During low tide, crabs emerge onto tidal flat feed, and then burrow into sand before incoming tide. They feed in droves during daytime, but separately at night. Under constant conditions without sediment, exhibited a bimodal daily activity pattern, with free-running period of ~12.8 h, comprising an active phase ~11 h alternating resting ~1 lag ~3 between peak Crabs were more notional night-time than daytime. In placed arena comprised...
The frequency of occurrence step length in the migratory behaviour various organisms, including humans, is characterized by power law distribution. This pattern known as Lévy walk, and reason for this phenomenon has been investigated extensively. Especially one possibility might be that reflects change self-confidence one’s chosen behaviour. We used simulations to demonstrate active assumptions cause changes confidence level choice under a situation lack information. More specifically, we...
森林科学などの野外科学では，研究が行われた状況の基礎情報として，また時には研究対象となる現象の説明要因として，気象データは欠かせない。特に長期・広域比較生態系研究においては研究遂行上のインフラであり，各研究施設や試験地の気象観測データを使いやすい形で統一的に提供しうる公開システムの整備が望ましい。そこで，1）各組織の観測データの統一的な公開システムの提供，2）過去データが検索可能なデータベースの構築，3）研究者や観測者への公開システムの提供，4）観測データの品質管理，を目的として「全国森林気象データベース」を開発した。現在，XMLデータベースの採用およびデータ整形の一元自動化により，1から3までの目的を達成でき運用を開始している。今後は観測データの品質管理などが課題である。