3,186 research outputs found
Dr. Frank R. Lock
No full textDr. Frank R. Lock, one of the youngest original 1941 Bowman Gray School of Medicine faculty members, was professor and chairman of the Department of Obstetrics and Gynecology
Lock 12 with Frank Trevorrow
No full textOne black and white photographic print of the remains of Lock 12, also known as the Tennis Lock, on the Ohio and Erie Canal at Lockville in Fairfield County, Ohio. Grass and shrubbery can be seen growing between and around the lock walls. A man named Frank Trevorrow can be seen standing on top of the right wall of the lock while trees can be seen in the background
LOSCO A Ship Lock Scheduling Model
No full textA ship lock scheduling model called LOSCO was developed in order to decrease passage times at locks with two parallel chambers. Three locks were chosen to model, as they are some of the busiest locks of the Netherlands. The Krammersluizen, the Sluizen Hansweert and the Kreekraksluizen. Passage times are not collected at the locks, therefore the model was compared to SIVAK. SIVAK is the standard model for research on locks at Rijkswaterstaat. To schedule vessels in locks three types of choices can be made. Every vessel needs to be assigned to a chamber, the initiation time of locking should be decided and the order of sailing in a chamber should bedefined. By optimising these choices, passage times can be decreased. Optimising is however not straightforward, as the problem is an instance of the job shop scheduling problem. No exact algorithm has been found to solve these problems in a practical amount of time. Therefore the challange is to find a balance in solution quality and the speed of the model when creating a lock scheduling model. In this thesis, four ideas to improve the lock scheduling model by Verstichel were researched. The first idea is to change the resolution of the timesteps. The gain in performance was however not found to weight up against the loss in solution quality for resolution to be useful. The second idea is to drop the first come, first serve constraint that Verstichel created. This idea was also not found to be effective. The third idea is to divide the scheduling problem up into chunks. This is called cut separation. Chunks of around 25 vessels were found to be effective. The fourth and last idea is that of a maximum waiting time. The maximum waiting time makes the performance of the model better and also makes the scheduling model fairer. Data from the year 2016 was used to schedule all lockings. The LOSCO model is effective for reducing the average assage time per vessel with about 3.9 ± 0.12 SE minutes for the Krammersluizen and 2.0 ± 0.14 SE minutes for the Sluizen Hansweert compared to the SIVAK model. At the Kreekraksluizen, the model could not find a solution, as the Kreekraksluizen are a lot busier than the other locks that were tested. At the Kreekraksluizen on average every 7.8 minutes a vessel arrives, whereas at the Krammersluizen and the Sluizen Hansweert respectively every 14.0 and 13.0 minutes a vessel arrives throughout the year. The LOSCO model is only better than SIVAK if the lock is relatively quiet. At the busiest time of the day, typically in the afternoon, SIVAK performs better. The models perform equal at inter arrival times of around 8to 10 minutes. Optimisation on economical value of the vessels was found to be less effective than optimisation on time. Optimisation on time was also found to be fairer. The LOSCO model is a step ahead towards a practical lock scheduling model. In order to achieve a fully practical model, some simplifications need to be expanded. It is recommended to first improve the model before it is applied in practice, as the model is able to outperform SIVAK in some cases, but not in the busiest cases. After this some extra features can be implemented, such as the model dealing with vessel delays and locks with 3 chambers
Cardigan Estate no. 2, Rose Bay : auction sale on the ground 3 p.m. Saturday, October 21st, 1911 /
No full textSales plan booklet for land in the suburb of Rose Bay in Sydney, bounded by Chaleyer Street, Onslow Street and Liverpool Street.; Title from map on p. [1].; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-lfsp2403.Cardigan Estate, subdivision no. 2, Rose Ba
Dr. Frank Lock
No full textDr. Frank Lock was a member of the "first" faculty at the newly-formed Bowman Gray School of Medicine. He served thirty-two years with the school, twenty-five of those years as chair of Obstetrics and Gynecology. His interest in overall women's health prompted him to open the first prenatal clinic in Winston-Salem in 1941 and he founded the Behavioral Sciences Center in 1966 at Bowman Gray School of Medicine. Dr. Lock was the only man in America to serve as the president of both the American College of Obstetrics and Gynecologists and the American Association of Obstetrics and Gynecology at the same time. He was also the first president of the Bowman Gray Foundation in 1952. He retired in 1973 and died in 1979.Source of description: The Story of Medicine at Wake Forest College
Nut Lock.
No full textPatent for a simple, inexpensive, and efficient improved nut-lock that "securely lock[s] a nut against accidental rotation, and adapted to be readily applied to single nuts having either right or left hand threads" (lines 12-15). The invention also is easily screwed and unscrewed without being damaged
Rose Bay, Cardigan estate no. 2 [cartographic material] /
No full text"J.G. Griffin, C.E., licensed surveyor under R.P.A., Equitable Buildings, George St., City".; Includes local sketch.; Sales plan of Cardigan estate no. 2, Rose Bay.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-lfsp2430
Lock
No full textPatent for a lock. This lock is designed for a coin fed lock that releases the key for the customer. Illustration included
Feluccas entering a lock on the Ismalia Canal Egypt [boats crowded together at lock entrance, people watching from the top of the lock] [picture] : [Egypt, World War II] /
No full textPart of the Hurley negative collection.; Condition: silvering.; See cover.; Hurley series: Egypt, World War II.; Other number: 9
[Lock 4 Murray River] [picture] : [South Australia] /
No full textPart of the Hurley negative collection.; Hurley series: South Australia
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