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Considerations of the Osteology and Myology of the Upper Cervical Region in the Phyllostomatidae
Walton, Gloria M.,Walton, Dan W. The Korean Society for Integrative Biology 1973 동물학회지 Vol.16 No.3
Phyllostomatidae科 박쥐의 第 1頸椎骨에 關한 骨學的 考察을 하였다. 2個의 顯著한 腹棘狀突起, 1個의 中央腹板隆起 및 橫突起狀의 附屬突起의 存在에 關하여 記述하였다. Artibeus lituratus 박쥐에 對한 第 1頸椎骨과 連關된 上頸部 筋內과의 機能에 關하여 論하였고 系統遺傳學的 의의에 관한 여러면을 考察하였다. The osteology of the atlas of phyllostomatid bats is considered. The presence of two prominent ventral spines, a midventral tubercle and accessory processes on the transverse processes are noted. Functional consideration of the atlas is presented by a study of the myology of the upper cervical region of Artibeus lituratus. Consideration is given to possible phylogenetic implications.
Notes on Hedgehogs of the Lower Indus Valley
Walton, Gloria M.,Walton, Dan W. The Korean Society for Integrative Biology 1973 동물학회지 Vol.16 No.3
P. micropus 와 H. auritus collaris 種間의 增殖習性과 生態를 比較검토 하였다. H. auritus collaris 새끼의 外部形態와 活動習性을 어미와 比較 觀察하였고 體重과 外部測定値와의 連關性을 특히 重點的으로 比較하였다. Information is presented and comparisons made on the behavior and reproduction of P. micropus and H. auritus collaris. Comments are made in observations of the apprearance and activities of new born H. auritus collaris and on maternal-infant relationships. Observations on size-weight relationships are made, especially for H. auritus collaris.
A review of two theories of motion sickness and their implications for tall building motion sway
Walton, D.,Lamb, S.,Kwok, Kenny C.S. Techno-Press 2011 Wind and Structures, An International Journal (WAS Vol.14 No.6
Low-frequency building vibration is known to induce symptoms of motion sickness in some occupants. This paper examines how the adoption of a theory of motion sickness, in conjunction with a dose-response model might inform the real-world problem of managing and designing standards for tall building motion sway. Building designers require an understanding of human responses to low-dosage motion that is not adequately considered by research into motion sickness. The traditional framework of Sensory Conflict Theory is contrasted with Postural Instability Theory. The most severe responses to motion (i.e., vomiting) are not experienced by occupants of wind-excited buildings. It is predicted that typical response sets to low-dosage motion (sleepiness and fatigue), which has not previously been measured in occupants of tall-buildings, are experienced by building occupants. These low-dose symptoms may either be masked from observation by the activity of occupants or misattributed to the demands of a typical working day. An investigation of the real-world relationship between building motion and the observation of low-dose motion sickness symptoms and a degradation of workplace performance would quantify these effects and reveal whether a greater focus on designing for occupant comfort is needed.
An Instrumentation System Applied to Formation Flight
Williamson, Walton R.,Abdel-Hafez, Mamoun F.,Rhee, Ihnseok,Song, Eun-Jung,Wolfe, Jonathan D.,Chichka, David F.,Speyer, Jason L. IEEE 2007 IEEE transactions on control systems technology Vol.15 No.1
<P>As part of a NASA dryden autonomous formation flight program for improved drag reduction of multiple F/A-18 aircraft, a new instrument, the formation flight instrumentation system (FFIS), for the precise estimation of the relative position, velocity, and attitude between two moving aircraft without the aid of ground-based instruments, was developed. The FFIS uses a global position system (GPS) receiver and an inertial navigation sensor (INS) instrumentation package on each aircraft combined with a wireless communication system for sharing measurements between vehicles. An extended Kalman filter structure blends the outputs of each GPS/INS in a distributed manner so as to maximize the accuracy of the relative state estimates. Differential carrier phase GPS measurements are used to provide high accuracy relative range measurements to the filtering algorithm. A multiple hypothesis Wald test for estimating the integer ambiguity between the two moving vehicles was developed as part of this project. The FFIS was tested in a hardware-in-the-loop simulation (HIL Sim) before being tested in actual F-18 flight tests. Test results validated the FFIS performance. Flight test results showed that the Wald test accurately estimates the integer ambiguity and that relative range estimates using least squares provide accurate position estimates with a mean of approximately 7 cm and a standard deviation of 13 cm</P>
A review of two theories of motion sickness and their implications for tall building motion sway
D. Walton,S. Lamb,Kenny C.S. Kwok 한국풍공학회 2011 Wind and Structures, An International Journal (WAS Vol.14 No.6
Low-frequency building vibration is known to induce symptoms of motion sickness in some occupants. This paper examines how the adoption of a theory of motion sickness, in conjunction with a dose-response model might inform the real-world problem of managing and designing standards for tall building motion sway. Building designers require an understanding of human responses to low-dosage motion that is not adequately considered by research into motion sickness. The traditional framework of Sensory Conflict Theory is contrasted with Postural Instability Theory. The most severe responses to motion (i.e., vomiting) are not experienced by occupants of wind-excited buildings. It is predicted that typical response sets to low-dosage motion (sleepiness and fatigue), which has not previously been measured in occupants of tall-buildings, are experienced by building occupants. These low-dose symptoms may either be masked from observation by the activity of occupants or misattributed to the demands of a typical working day. An investigation of the real-world relationship between building motion and the observation of low-dose motion sickness symptoms and a degradation of workplace performance would quantify these effects and reveal whether a greater focus on designing for occupant comfort is needed.