Access

Format

Author / Creator

Subject

Recently added

Eresources

Language

Place of Publication

Dates

Location

1413. "Mustard, the chap who was on leave with me"
1414. "Trooper E.E. [Ernest Edward] Reeman who has been my groom and then batman, since I got my Comm. He is a very good little chap - come from Mole Creek" Reeman's regimental no. was 474.
1415. "I look a perfect fright in this. I was looking up so as not to shade my  face. Taken at Sidi Goher station. Mustard, Fysh, Kicky"
1416. Heliopolis - (l to r) back row: Arthur Amies, Roy Garvie, Gen. Gordon, Joe Cradock, Fysh, Jack Donnelly, Bill Hall, Frank O'Rielly [O'Riley ?];  middle row: Bill Parsons, Fred Harvey, W.O'Brien, Don Munro, Arch Malton;  front row: Frank McDougall, "Pussy" Parkes, Jack Ives, Joe Radwell;  lying in front: ... Stanley
1417. Aborigines pushing car
1418. Fysh in uniform and two others with Model T
1419. Officers of C Squadron of the 3rd Light Horse Brigade at camp
1420. Trooper Jack [John James] Long, 1st A.M.G.S. and AFC, England
1421-1422. Unidentified
1423. Capt. Moody
1424. AFC group
1425. AFC no. 1 Squadron and visit by RFC no. 67 Squadron (?)
1426. Ern Mustard / G.Lekegian & Co., Cairo
1427. Lieut. G. Finlay, Julius Aerodrome, 16 Apr 1918 / Shoucair's, Cairo
1428. "I got this taken the other day by a friend of mine who is a sports photographer. First 'civvy' one I've had taken since before the war. Thought you might like to possess an impression of my mug. Jack Butler" [John Herbert Butler]
1429. Lieut. Fred Harvey, 1st A.M.G.S. and 67th Sqdn AFC, was killed in an aeroplane accident 12 Nov 1917 / G.Lekegian & Co., Cairo
1430. Johnnie Webster, killed in War / Robinson Bros, Launceston
1431. Aeroplane crash, Middle East / Russell Roberts
1432. Flying Corps - Fysh, left, middle row;  Ross Smith, to the right of Col. Williams in the centre / Australian Official Photo purchased from the Australian War Museum
1433. Flying Corps and Bristol Fighters, incl A-7200 which Fysh used, Middle East / Australian Official Photo purchased from the Australian War Museum
1434. Officers and troop
1435. McGinniss and Fysh prior to leaving on the survey to Darwin, taken in Melbourne, 1919 / Arthur Jordan, Warrnambool

Sir Hudson Fysh - War portraits, 1914-1919

The COVID-19 pandemic has seen the development of several mathematical models. In recent years, the very topical issue of re-susceptibility has led to the proposal of more complex models to address this issue. The paper deals with an optimal control problem applied to COVID-19. The Pontryagin maximum principle and the dynamic programming principle are used to solve the problem. A compartmental Ordinary Differential Equation (ODE) model is proposed to study the evolution of the pandemic by controlling the effectiveness of the detection campaign and the treatment. We prove the global stability of the Disease-Free Equilibrium (DFE) and the existence of optimal control and trajectories of the model. In the optimal control problem, we bring the system back to the DFE. Numerical simulations based on COVID-19 data in Senegal show possibilities to reduce the disease evolution, sometimes by emphasizing the detection campaign and/or the treatment proposed to patients.

International journal of mathematical, engineering and management sciences, 2025-04, Vol.10 (2), p.420-440

Optimal Covid-19 Control on Effectiveness of Detection Campaign and Treatment

We present a mathematical model of a fishery on several sites with a variable price. The model takes into account the evolution during the time of the resource, fish and boat movement between the different sites, fishing effort and price that varies with respect to supply and demand. We suppose that the movements of the boats and resource as well as the variation of the price go on at a fast time scale. We use methods of aggregation of variables in order to reduce the number of variables and we derive a reduced model governing two global variables, respectively the biomass of the resource and the fishing effort of the whole fishery. We look for the existence of equilibria of the aggregated model and perform local stability analysis. Two main cases can occur. The first one corresponds to over-exploitation leading to fish extinction. At extinction, the fishing effort tends to a positive value. The second case corresponds to a durable fishery equilibrium which is globally asymptotically stable. In the later case, we show that there exists a number of fishing sites that optimizes the total catch of the fishery.

Acta biotheoretica, 2014-09, Vol.62 (3), p.371-384

A Bioeconomic Model of a Multi-site Fishery with Nonlinear Demand Function: Number of Sites Optimizing the Total Catch

We present a mathematical model of two competing marine species that are harvested. We consider three models according to different levels of complexity, without and with species refuge and density-independent and density-dependent species movement between fishing area and refuge. We particularly study the effects of the fishing pressure on the outcome of the competition. We focus on conditions that allow an inferior competitor to invade as a result of fishing pressure. The model is discussed in relationship to the case of the thiof and the octopus along the Atlantic West African coast. At the origin, the thiof was abundant and the octopus scarce in that region. Since, the fishing pressure has strongly increased in some fishing areas leading to the depletion of the thiof and the invasion of its competitor, the octopus.

Acta biotheoretica, 2016-12, Vol.64 (4), p.519-536

Can Fishing Pressure Invert the Outcome of Interspecific Competition? The Case of the Thiof and of the Octopus Along the Senegalese Coast

Export record to excel

Export this record

Export record to excel

Sir Hudson Fysh - War portraits, 1914-1919

Export this record

Export record to excel

Optimal Covid-19 Control on Effectiveness of Detection Campaign and Treatment

Export this record

Export record to excel

A Bioeconomic Model of a Multi-site Fishery with Nonlinear Demand Function: Number of Sites Optimizing the Total Catch

Export this record

Export record to excel

Can Fishing Pressure Invert the Outcome of Interspecific Competition? The Case of the Thiof and of the Octopus Along the Senegalese Coast

Refine your search