29,389 research outputs found
DO PROFITABLE GRAIN MARKETING STRATEGIES EXIST FOR KANSAS CROPS?
The issue of whether profitable preharvest and postharvest marketing strategies exist relative to harvest sales for Kansas crops for the 1985-1998 marketing years is addressed. Practical application of market efficiency concepts is discussed. Nonharvest wheat marketing strategies offered less opportunity relative to harvest sales than for feedgrains and especially soybeans.Grain marketing, efficient markets, futures, options, marketing strategies, Crop Production/Industries, Marketing,
The Effects of the Micro-Market Structure for Kansas Grain Elevators on Spatial Grain Price Differentials
Corn and wheat cash prices in Kansas are affected by a number of local supply-demand, market structure, transportation access and other factors. Kansas corn prices in 2008 were affected by form of business organization, local feedgrain production and livestock feed usage, elevator storage capacity, access to railroad grain handling facilities, and to a limited degree by the number of competitors in local markets. Geographic proximity to grain ethanol plants did not have a positive impact on local corn prices, although a number of mitigating factors may exist. Kansas wheat prices in 2008 were affected by local wheat production, elevator storage capacity, the number of competitors in local markets, and by location relative to flour mills. Evidence of operating cost and efficiency differences among grain elevators indicate the presence of market power in local Kansas grain markets.grain markets, market structure, grain ethanol, wheat flour, monopsonistic competition, Agribusiness, Agricultural Finance, Consumer/Household Economics, Crop Production/Industries, Demand and Price Analysis, Farm Management, Financial Economics, Marketing, Research Methods/ Statistical Methods, Resource /Energy Economics and Policy, Risk and Uncertainty,
New model for vortex-induced vibration of catenary riser
This paper presents a new theoretical model capable of predicting the vortex-induced vibration response of a steel catenary riser subject to a steady uniform current. The equations governing riser in-plane/out-ofplane (cross-flow/in-line) motion are based on a pinned beam-cable model accounting for overall effects of bending, extensibility, sag, inclination and structural nonlinearities. The empirically hydrodynamic model is based on nonlinear wake oscillators describing the fluctuating lift/drag forces. Depending on the potentially vortex-induced modes and system parameters, a reduced-order fluid-structure interaction model is derived which entails a significantly reduced computational time effort. Parametric results reveal maximum response amplitudes of risers, along with the occurrence of uni-modal lock-in phenomenon
Florida's West Coast inlets: shoreline effects and recommended action
This report responds to the 1986 Beaches Bill which, in recognition of the
potential deleterious impact on Florida's beaches of inlets modified for navigation,
mandated a study of those inlets with identification of recommended action to reduce
the impacts. This report addresses west Coast inlets; East Coast inlets are the
subject of a companion report.
There are 37 inlets along that portion of Florida's West Coast commencing from
Pensacola Bay Entrance to Caxambas Pass at the south end of Marco Island. Compared to
those on the East Coast, most West Coast inlets have not had the deleterious effects
on the adjacent beaches, yet all modified inlets without proper management have the
potential of impacting unfavorably on the adjacent shorelines. Moreover, at present
there is interest in opening three West Coast entrances which either have been open
in the past (Midnight Pass) or which have opened occasionally (Navarre Pass and
Entrance to Phillips Lake).
A review of inlets in their natural condition demonstrates the presence of a
shallow broad outer bar across which the longshore transport Occurs. These shallow
and shifting bar features were unsuitable for navigation which in many cases has led
to the deepening of the channels and fixing with one or two jetty structures. Inlets in this modified state along with inappropriate maintenance practices have the
potential of placing great ero$ional stress along the adjacent beaches. Moreover.
channel dredging can reduce wave sheltering of the shoreline by ebb tidal shoals and
alter the equilibrium of the affected shoreline segments. The ultimate in poor sand
management practice is the placement of good quality beach sand in water depths too
great for the sand to reenter the longshore system under natural forces; depths of 12
ft. or less are considered appropriate for Florida in order to maintain the sand in
the system.
With the interference of the nearshore sediment transport processes by inlets
modified for navigation, if the adjacent beaches are to be stabilized there must be
an active monitoring program with commitment to placement of dredged material of
beach quality on shoreline segments of documented need. Several East Coast inlets
have such transfer facilities; however. the quantities of sand transferred should be
increased. Although an evolution and improvement in the technical capability to
manage sand resources in the vicinity of inlets is expected, an adequate capability
exists today and a concerted program should be made to commence a scheduled
implementation of this capability at those entrances causing greatest erosional
stress on the adjacent shorelines.
A brief summary review for each of the 37 West Coast inlets is presented
including: a scaled aerial photograph, brief historical information, several items
related to sediment losses at each inlet and special characteristics relevant to
State responsibilities. For each inlet, where appropriate, the above infor~tion is
utilized to develop a recommenced action. (PDF has 101 pages.
Monthly, annual and quarterly frequencies: a comparison of models for tourism in Sardinia and bounded rationality
This paper constructs and estimates the demand for international tourism for the Italian Province of Sassari. The sample period under estimation is from 1972 to 1995. Three dynamic models are estimated at monthly, annual and quarterly data frequencies. Similarities and differences are explored amongst the three models, using recently developed econometric techniques. A "pre-modelling" data analysis is undertaken for the economic series of interest. By adopting the LSE "general-to-specific" methodology, dynamic estimations are run. A full range of diagnostic tests is provided. Short and long run income elasticities, negativity and substitutability are tested on the light of economic theory. On balance, evidence is found that the monthly and quarterly models present homogenous results in terms of seasonal and long run unit roots. Annual data show different and perhaps misleading results.
Generic changes in United States Issini (Hemiptera, Fulgoroidea, Issidae)
Three new genera of the family Issidae are described for species formerly included in the genus Hysteropterum sensu lato: Balduza Gnezdilov and OâBrien, gen. n. (type species: Hysteropterum unum Ball 1910), Stilbometopius Gnezdilov and OâBrien, gen. n. (type species: Issus auroreus Uhler 1876), Abolloptera Gnezdilov and OâBrien, gen. n. (type species: Hysteropterum bistriatum Caldwell 1945),. The genus Tylanira Ball 1936 is redescribed. The male genitalia of Tylanira bifurca Ball 1936 is described and illustrated. Tylana ustulata Uhler 1876 is transfered to Tylanira. Hysteropterum bufo Van Duzee 1923 is transfered to Balduza gen. n. and the male genitalia of the species is described and illustrated. The subgenus Paralixes Caldwell 1945 of the genus Ulixes StĂ„l 1861 is raised to genus â Paralixes Caldwell 1945, stat. n. A key to the issid genera of the United States is given. New data on the distribution of 7 species are given
Nonprofit Issues Management: A New Approach to Resist the Label of âRiskâ
This chapter critiques the principles behind issues management theories, explores case studies from the nonprofit sector and suggests a new approach that challenges the dominant corporate-centric theories and is more appropriate for nonprofit organisations
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