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Malaysian: The Way Forward (Vision 2020), Dr. Mahathir Bin Mohamad Feb 1991

Malaysian: The Way Forward (Vision 2020), Dr. Mahathir Bin Mohamad

Documents

A paper introducing the idea of Vision 2020.


Approuvant Les Statuts De La Société Nationale De Recouvrement, Abdou Diouf Feb 1991

Approuvant Les Statuts De La Société Nationale De Recouvrement, Abdou Diouf

Documents

No abstract provided.


Portant Création De La Société Nationale De Recouvrement, Assemblèe Nationale Du Sènègal (National Assembly Of Senegal) Feb 1991

Portant Création De La Société Nationale De Recouvrement, Assemblèe Nationale Du Sènègal (National Assembly Of Senegal)

Documents

No abstract provided.


Fallibility In Human Organizations And Political Systems, Raaj K. Sah Feb 1991

Fallibility In Human Organizations And Political Systems, Raaj K. Sah

Discussion Papers

No abstract provided.


Arithmetic Repeat Sales Price Estimators, Robert J. Shiller Feb 1991

Arithmetic Repeat Sales Price Estimators, Robert J. Shiller

Cowles Foundation Discussion Papers

Repeat sales price estimators are designed to infer price indexes of infrequently sold and unstandardized assets, such as houses, based only on changes in prices of those individual assets that are observed to be sold twice. Repeat sales price estimators are proposed here that are arithmetic, and either value-weighted or equally-weighted. Moreover, variants are proposed that are interval-weighted, i.e., that correct for a form of heteroskedasticity, and that include additional regressors representing changes in hedonic variables. Some of these methods are applied to data on house prices in Atlanta, Chicago, Dallas and San Francisco 1970–1986.


Ordonnant La Présentation À L'Assmblée Nationale Les Projets Suivants, Abdou Diouf, Ministere De L'Economie Et Des Finances Du Sénégal (Ministry Of Economy And Finance) Jan 1991

Ordonnant La Présentation À L'Assmblée Nationale Les Projets Suivants, Abdou Diouf, Ministere De L'Economie Et Des Finances Du Sénégal (Ministry Of Economy And Finance)

Documents

No abstract provided.


Yale Nurse, Yale School Of Nursing Jan 1991

Yale Nurse, Yale School Of Nursing

Yale School of Nursing Alumni Newsletters and Magazines

No abstract provided.


Anatomy And Relationships Of Corosaurus Alcovensis (Diapsida: Sauropterygia) And The Triassic Alcova Limestone Of Wyoming, Glenn William Storrs Jan 1991

Anatomy And Relationships Of Corosaurus Alcovensis (Diapsida: Sauropterygia) And The Triassic Alcova Limestone Of Wyoming, Glenn William Storrs

Bulletin of the Peabody Museum of Natural History

The 'Nothosauria,' a traditional suborder of Triassic marine reptiles, is of interest because of its presumed relationships to both plesiosaurs and primitive diapsid reptiles….


Optics Of Heterotrophic Nanoflagellates And Ciliates: A Tentative Assessment Of Their Scattering Role In Oceanic Waters Compared To Those Of Bacterial And Algal Cells, André Morel, Yu-Hwan Ahn Jan 1991

Optics Of Heterotrophic Nanoflagellates And Ciliates: A Tentative Assessment Of Their Scattering Role In Oceanic Waters Compared To Those Of Bacterial And Algal Cells, André Morel, Yu-Hwan Ahn

Journal of Marine Research

Heterotrophic nanoflagellates and naked ciliates have been isolated from open sea waters and separately grown by using free living marine bacteria as food. The modal diameters of purified (by differential screening) populations are about 3 and 12.5 μm, respectively. The spectral determination of their absorption and scattering properties have been carried out. By combining these values with the cell number density and size distribution function, simultaneously measured, the efficiency factors for absorption and scattering at the level of individual cells can be derived. From these factors and by using the anomalous diffraction theory, the relative index of refraction can be …


Seasonal Variations Of Surface Dynamic Topography In The Tropical Atlantic: Observational Uncertainties And Model Testing, Christine Duchène, Claude Frankignoul Jan 1991

Seasonal Variations Of Surface Dynamic Topography In The Tropical Atlantic: Observational Uncertainties And Model Testing, Christine Duchène, Claude Frankignoul

Journal of Marine Research

A new analysis of the historical temperature and salinity profiles in the tropical Atlantic is done in order to estimate quantitatively the uncertainties in the climatological seasonal variations of 0/400 db dynamic topography. The uncertainties are described by an error covariance matrix which takes into account aliasing and measurement errors, the effect of data gaps and interpolation, as well as the uncertainty of the T-S method that was used to calculate the dynamic height. The standard deviation of the monthly means is found to range between 2 and 10 dyn cm, depending on the data density and the level of …


Direct Measurement Of Dissolved Inorganic Nitrogen Exchange And Denitrification In Individual Polychaete (Nereis Virens) Burrows, Erik Kristensen, Mikael Hjorth Jensen, Robert C. Aller Jan 1991

Direct Measurement Of Dissolved Inorganic Nitrogen Exchange And Denitrification In Individual Polychaete (Nereis Virens) Burrows, Erik Kristensen, Mikael Hjorth Jensen, Robert C. Aller

Journal of Marine Research

The burrows of macroinfauna are significant sites of sediment-water nitrogen exchange and associated microbial activity. In this study, the exchange of dissolved inorganic nitrogen (DIN) and nitrogen cycle reaction rates were quantified in individual burrows of the estuarine polychaete Nereis virens. Burrow ventilation rate and DIN (NH4+, NO2−, NO3− and N2O) exchange were determined at 22°C in individual, inhabited burrows with and without the presence of C2H2 (an NH4+ oxidation, N2O reduction block). Ventilation cycles were unaffected by C2H2, …


Early Diagenesis Of Chlorophyll-A In Long Island Sound Sediments: A Measure Of Carbon Flux And Particle Reworking, Mingyi Sun, Robert C. Aller, Cindy Lee Jan 1991

Early Diagenesis Of Chlorophyll-A In Long Island Sound Sediments: A Measure Of Carbon Flux And Particle Reworking, Mingyi Sun, Robert C. Aller, Cindy Lee

Journal of Marine Research

Sedimentary chlorophyll distributions reflect supply from primary production in overlying waters, transport during sedimentation/bioturbation, and alteration due to decomposition/transformation reactions. In Long Island Sound sediments, seasonal depth profiles of chlorophyll-a (Chl-a) often decreased exponentially within a few centimeters of the sediment-water interface, implying that initial decomposition rates of Chl-a were faster than surface sediment mixing rates. The highest surface sediment concentrations of Chl-a occurred in early spring, shortly after the spring bloom; the lowest concentrations occurred in summer. Chl-a was more concentrated at the shallow station (∼15 m) than at the deeper station (∼40 …


Bubbles And The Air-Sea Exchange Of Gases In Near-Saturation Conditions, David K. Woolf, S. A. Thorpe Jan 1991

Bubbles And The Air-Sea Exchange Of Gases In Near-Saturation Conditions, David K. Woolf, S. A. Thorpe

Journal of Marine Research

The net air-sea transfer of gases is not simply proportional to the surface gradient of gas concentration as is widely assumed but, when proper account of bubbles is taken, is asymmetrical with a net invasion of gas at 100% saturation. The nitrogen and oxygen saturation levels and the variation of the composition of a bubble during its lifetime affect the transfer of all gases. The net transfer of gases is not a function of the size and depth of the bubbles and the concentration of dissolved gases alone, but is dependent on the composition of the bubbles and thus the …


Time Scales Of Mesoscale Variability And Their Relationship With Space Scales In The North Atlantic, P. Y. Le Traon Jan 1991

Time Scales Of Mesoscale Variability And Their Relationship With Space Scales In The North Atlantic, P. Y. Le Traon

Journal of Marine Research

A systematic study of characteristic time scales of mesoscale variability over the North Atlantic was done using two years of Geosat data. Time scales are first characterized by 10° latitude by 10° longitude bins. A more detailed description was obtained by globally mapping the Sea Level Anomaly temporal correlation after one cycle (17.05 days). The scales are shortest in areas of high mesoscale activity (Gulf Stream, North Atlantic Current) while relatively long time scales are observed over the Mid-Atlantic Ridge and in the eastern part of the basin. In general, time scales are not proportional to space scales. Propagation velocities …


Oxic And Anoxic Decomposition Of Tubes From The Burrowing Sea Anemone Ceriantheopsis Americanus: Implications For Bulk Sediment Carbon And Nitrogen Balance, Erik Kristensen, Robert C. Aller, Josephine Y. Aller Jan 1991

Oxic And Anoxic Decomposition Of Tubes From The Burrowing Sea Anemone Ceriantheopsis Americanus: Implications For Bulk Sediment Carbon And Nitrogen Balance, Erik Kristensen, Robert C. Aller, Josephine Y. Aller

Journal of Marine Research

Many marine infaunal animals form organic tube and burrow linings. The role of these materials in organic matter cycling and preservation in sediments is largely unknown. In the case examined here, the infaunal sea anemone, Ceriantheopsis americanus, (a common component of bottom communities along the east coast of North America) forms a leathery, fibrous tube lining 2–3 mm thick, ∼1 cm in diameter, and typically extending 20–30 cm into deposits. Tube fibers (∼2 mm long, 2–5 μm thick) formed from discharged specialized nematocyst cells, ptychocysts, are composed of a silk-like protein copolymer, cerianthin. Tubes incubated under oxic and anoxic conditions …


Modeling Of Internal Tides In Fjords, V. Tverberg, B. Cushman-Roisin, H. Svendsen Jan 1991

Modeling Of Internal Tides In Fjords, V. Tverberg, B. Cushman-Roisin, H. Svendsen

Journal of Marine Research

A previous model for the distribution of internal tides above irregular topography is generalized to include arbitrary stratification and a radiation condition at the open boundary. Thanks to a small amount of dissipation, this model remains valid in the presence of resonant internal tides, leading to intense wave-energy beams. An application to a Norwegian fjord correctly reproduces the observed energy pattern consisting of two beams both originating at the 60-meter deep entrance sill and extending in-fjord, one upward toward the surface, the other downward toward the bottom. After correction for the varying width of the fjord, the observed and modelled …


Modeling The Variability Of The Somali Current, D. L. T. Anderson, D. J. Carrington, R. Corry, C. Gordon Jan 1991

Modeling The Variability Of The Somali Current, D. L. T. Anderson, D. J. Carrington, R. Corry, C. Gordon

Journal of Marine Research

The dynamics of the Somali Current system during the southwest Monsoon are investigated using a 16 level general circulation model. Solutions are found for a number of model geometries and wind-forcing patterns. The first integrations reported use a model domain exactly equivalent to that of the layer model of McCreary and Kundu allowing a direct comparison between the level and layer models. In the second set of integrations a more realistic Indian Ocean geometry is used, but still with an idealized wind forcing, while in the third, the Hellerman and Rosenstein wind stresses are used to simulate the seasonal cycle. …


On The Structure And Stability Of The Alaskan Stream, R. K. Reed, F. I. Gonzalez, L. Miller Jan 1991

On The Structure And Stability Of The Alaskan Stream, R. K. Reed, F. I. Gonzalez, L. Miller

Journal of Marine Research

Data from a year-long current mooring in the central region of the Alaskan Stream revealed an extremely stable flow unlike that in typical western boundary currents. Hydrographic and ADCP data also showed a simple flow free of excursions or eddies. These findings are in good agreement with a recent analytical model of the Stream. In addition, GEOSAT altimeter estimates of variability are consistent with the observations, suggesting that the results are valid in spite of the relatively large corrections applied at these high latitudes.


Correlation Of The Signs And Symptoms Of Uterine Leiomyomas With The Findings On Magnetic Resonance Imaging Studies, Symphorosa Magdaleine Williams Jan 1991

Correlation Of The Signs And Symptoms Of Uterine Leiomyomas With The Findings On Magnetic Resonance Imaging Studies, Symphorosa Magdaleine Williams

Yale Medicine Thesis Digital Library

No abstract provided.


Development Of An Instrument To Identify Newborns At Risk Of Child Abuse Or Neglect, Denise Huan-Hsuan Kung Ihnat Jan 1991

Development Of An Instrument To Identify Newborns At Risk Of Child Abuse Or Neglect, Denise Huan-Hsuan Kung Ihnat

Yale Medicine Thesis Digital Library

No abstract provided.


A Carbon Budget For A Eutrophic Marine Ecosystem And The Role Of Sulfur Metabolism In Sedimentary Carbon, Oxygen And Energy Dynamics, P. Sampou, C. A. Oviatt Jan 1991

A Carbon Budget For A Eutrophic Marine Ecosystem And The Role Of Sulfur Metabolism In Sedimentary Carbon, Oxygen And Energy Dynamics, P. Sampou, C. A. Oviatt

Journal of Marine Research

Organic carbon was budgeted for an experimental marine ecosystem which received 21.2 mol C m–2 of allochthonous sewage sludge plus 12.4 mol C m–2 in situ net daytime production over a 99 day experiment. The fate of carbon, in order of importance, was remineralization, storage in the sediments and export. Sediment carbon metabolism was dominated by sulfate reduction which resulted in the dissociation of organic carbon remineralization from oxygen consumption and energy cycling. The sediments were inefficient in processing sedimented carbon and its associated chemical energy. About 70% of the energy reaching the sediments as organic carbon remained …


Expatriation Of Xyrichtys Novacula (Pisces: Labridae) Larvae: Evidence Of Rapid Cross-Slope Exchange, Jonathan A. Hare, Robert K. Cowen Jan 1991

Expatriation Of Xyrichtys Novacula (Pisces: Labridae) Larvae: Evidence Of Rapid Cross-Slope Exchange, Jonathan A. Hare, Robert K. Cowen

Journal of Marine Research

Larvae of Xyrichtys novacula (Pisces: Labridae) have been collected in the Middle Atlantic Bight (MAB) hundreds of kilometers north of reported adult ranges by both the Marine Monitoring and Assessment Program (MARMAP) and by our ichthyoplankton cruises. These larvae could be from a previously unknown population north of Cape Hatteras or they could have been transported north from southern populations. In order to examine these two hypotheses both biological and physical oceanographic data were considered, including size-specific larval distribution, larval age, vertical distribution of larvae, satellite imagery of sea surface temperature, and temperature and salinity measurements. Larvae captured during our …


The Kinetics Of Organic Matter Mineralization In Anoxic Marine Sediments, David J. Burdige Jan 1991

The Kinetics Of Organic Matter Mineralization In Anoxic Marine Sediments, David J. Burdige

Journal of Marine Research

The kinetics of sulfate reduction and inorganic nutrient production (ΣCO2, ammonium, and phosphate) were examined in the sediments at five sites in the southern Chesapeake Bay, using long term (> 200 d) sediment decomposition experiments. Average first order rate constants for these processes (at 25°C) decreased from 8.2 to 3.7 yr–1 in the surface sediments (0–2 cm), to 2.1 to 0.2 yr–1 at 12–14 cm. The C/N and C/P ratios of the organic matter undergoing decomposition also increased with depth at these sites. Taken together, these results indicate that the reactivity of the organic matter undergoing …


Laminar Separation Of Colliding Western Boundary Currents, Paola Cessi Jan 1991

Laminar Separation Of Colliding Western Boundary Currents, Paola Cessi

Journal of Marine Research

A barotropic model is employed to study the dynamics of colliding jets along a western boundary. To isolate the processes at the western wall we use a regional model where two opposing jets are induced by prescribing narrow inflows at the northern and southern edges of the computational domain. The fluid is withdrawn from the domain on the eastern side.


Tidal Stirring And Phytoplankton Bloom Dynamics In An Estuary, James E. Cloern Jan 1991

Tidal Stirring And Phytoplankton Bloom Dynamics In An Estuary, James E. Cloern

Journal of Marine Research

A decade of observation in South San Francisco Bay demonstrates that estuarine phytoplankton biomass fluctuates at the time scale of days to weeks, and that much of this variability is associated with fluctuations in tidal energy. During the spring seasons of every year from 1980–1990, episodic blooms occurred in which phytoplankton biomass rose from a baseline of 2–4 mg chlorophyll a m–3, peaked at 20–40 mg chlorophyll a m–3, and then returned to baseline values, all within several weeks. Each episode of biomass increase occurred during neap tides, and each bloom decline coincided with spring tides. …


Hepatitis A Immunity In U.S. Travelers : Prevalence And Associated Factors, Alain-Marc Werner Jan 1991

Hepatitis A Immunity In U.S. Travelers : Prevalence And Associated Factors, Alain-Marc Werner

Yale Medicine Thesis Digital Library

No abstract provided.


Clinical And Seroepidemiological Case-Control Study Of Tropical Spastic Paraparesis And Multiple Sclerosis In Barbados, Cargill Herley Alleyne Jr. Jan 1991

Clinical And Seroepidemiological Case-Control Study Of Tropical Spastic Paraparesis And Multiple Sclerosis In Barbados, Cargill Herley Alleyne Jr.

Yale Medicine Thesis Digital Library

No abstract provided.


Bank Of Finland 72st Year Book Report On Activities In 1991, Suomen Pankki/Central Bank Of Finland Jan 1991

Bank Of Finland 72st Year Book Report On Activities In 1991, Suomen Pankki/Central Bank Of Finland

Documents

No abstract provided.


Annual Report, 1991, International Monetary Fund (Imf) Jan 1991

Annual Report, 1991, International Monetary Fund (Imf)

Documents

No abstract provided.


Diel Migration And Feeding Patterns Of The Chaetognath, Sagitta Friderici, Off The West Coast Of South Africa, Venetia Stuart, Hans M. Verheye Jan 1991

Diel Migration And Feeding Patterns Of The Chaetognath, Sagitta Friderici, Off The West Coast Of South Africa, Venetia Stuart, Hans M. Verheye

Journal of Marine Research

The vertical distribution patterns of adult and juvenile Sagitta friderici were investigated over a 48 h period, using samples collected at different depth strata with an RMT 1 × 6 net. Juvenile chaetognaths were generally found at depths of less than 50 m throughout the day and night, and exhibited limited diel migration patterns. Adults, on the other hand, migrated more extensively and were generally found below 50 m during the day and scattered throughout the water column or near the surface at night. Using the mean depths at each sampling time, the migration patterns of adult chaetognaths closely followed …