Allocation de biomasse et d'énergie chez deux espèces d'Aster (Asteracées) de milieux contrastants et chez leur hybride naturel

1988 ◽  
Vol 66 (9) ◽  
pp. 1687-1692
Author(s):  
Line Lapointe ◽  
Jean-Pierre Simon
Keyword(s):  
Resource Allocation ◽  
Lower Energy ◽  
Reproductive Effort ◽  
The Other ◽  
Forest Understory ◽  
Total Biomass ◽  
Natural Hybrid ◽  
Understory Species ◽  
Biomass Resource ◽  
Allocation Patterns

Patterns of allocation of biomass and calorie energy were investigated for 3 years in several populations of the following taxa: Aster acuminatus, A. nemoralis, and their natural hybrid Aster × blakei. Aster acuminatus, a forest understory species, allocates more biomass and energy to foliage and reproductive effort than the other two taxa. Aster nemoralis, a bog species, allocates more resources to stems and rhizomes than A. acuminatus and, although average total biomass values were lower, tissues had higher caloric values. For Aster × blakei, two groups of populations showing morphological introgression to either parent were also correlated with resource allocation patterns. Caloric and biomass resource allocation patterns of populations of the three taxa did not vary significantly over the 3-year study period, except for A. acuminatus where biomass was significantly lower in 1979 than in the other 2 years. Populations showing higher absolute biomass values had organs with lower energy values. However, when these values were expressed as percentages, the patterns of allocation of biomass and energy were not differentiated within each species. [Translated by the journal]

Biomass-allocation patterns in populations of Trillium erectum and T. grandiflorum in southern Ontario

1987 ◽  
Vol 65 (8) ◽  
pp. 1671-1675 ◽  
Author(s):  
Jerry G. Chmielewski ◽  
Gordon S. Ringius
Keyword(s):  
Biomass Allocation ◽  
Reproductive Effort ◽  
Total Biomass ◽  
Southern Ontario ◽  
Allocation Patterns

Biomass-allocation patterns to aerial tissues were examined among six populations for each of Trillium erectum L. and T. grandiflorum (Michx.) Salisb. in southern Ontario. Total biomass did not differ among populations of T. erectum, but androecial proportions and reproductive effort generally decreased from southwest to northeast. Total biomass of T. grandiflorum varied significantly among populations and its pattern of reproductive effort was the reverse of that of T. erectum. Androecium–gynoecium ratios decreased across southern Ontario from southwest to northeast for both species. These results suggest that there may be a shift from allogamy to autogamy in a northeasterly direction across southern Ontario.

Leaf survival of woody plants in deciduous broad-leaved forests. 2. Small trees and shrubs

1984 ◽  
Vol 62 (12) ◽  
pp. 2551-2556 ◽  
Author(s):  
Kihachiro Kikuzawa
Keyword(s):  
Adaptive Strategy ◽  
The Other ◽  
Forest Understory ◽  
Time Duration ◽  
Understory Species ◽  
Green Leaves ◽  
Leaf Emergence ◽  
Open Site ◽  
Leaf Survival ◽  
Trees And Shrubs

Leaf survival of 29 species of small trees and shrubs was described in and around deciduous broad-leaved forests in Hokkaido, northern Japan. Twenty-four species had green leaves in the summer (summer green) and the other five species had green leaves in winter. Among the latter, three species were evergreen, one had green leaves in the winter and no leaves in the summer (winter green), and the other had two types of shoots: evergreen and summer green (heteroptosis). In summer-green species of the understory, both leaf emergence and leaf fall lasted only a short time. Duration of leaf emergence was long in open-site species and was intermediate in gap species. Leaf survival can be considered as part of the adaptive strategy of each species. The leaves of understory species emerged in a flush; that pattern could be adaptive to the strongly seasonal illumination of the forest floor. Evergreen and winter-green habits, as well as heteroptosis, were also assumed to be adaptive to life in the understory of deciduous broad-leaved forests, since full sunlight in early spring can be utilized by their overwintering leaves. Leaf survival of gap species was presumed to be more flexible than that of forest understory species. Leaf survival of open-site species was considered to be a strategy to occupy the available open spaces as widely as possible.

Determination of the lattice translation across {110} APBs in GaAs

1988 ◽  
Vol 46 ◽  
pp. 600-601
Author(s):  
D.R. Rasmussen ◽  
N.-H. Cho ◽  
C.B. Carter
Keyword(s):  
Grain Boundaries ◽  
Lower Energy ◽  
Antiphase Boundary ◽  
The Other ◽  
Boundary Structure ◽  
Interface Plane ◽  
Inversion Symmetry ◽  
High Angle ◽  
Equilibrium Distance

Domains in GaAs can exist which are related to one another by the inversion symmetry, i.e., the sites of gallium and arsenic in one domain are interchanged in the other domain. The boundary between these two different domains is known as an antiphase boundary [1], In the terminology used to describe grain boundaries, the grains on either side of this boundary can be regarded as being Σ=1-related. For the {110} interface plane, in particular, there are equal numbers of GaGa and As-As anti-site bonds across the interface. The equilibrium distance between two atoms of the same kind crossing the boundary is expected to be different from the length of normal GaAs bonds in the bulk. Therefore, the relative position of each grain on either side of an APB may be translated such that the boundary can have a lower energy situation. This translation does not affect the perfect Σ=1 coincidence site relationship. Such a lattice translation is expected for all high-angle grain boundaries as a way of relaxation of the boundary structure.

scholarly journals Biomass Equations for 24 Understory Species in Coniferous and Broadleaved Mixed Forests in Northeastern China

2016 ◽  
Author(s):  
Huaijiang He ◽  
Chunyu Zhang ◽  
Fengguo Du ◽  
Xiuhai Zhao ◽  
Song Yang ◽  
...  
Keyword(s):  
Forest Ecosystem ◽  
Northeastern China ◽  
Individual Species ◽  
Total Biomass ◽  
Basal Diameter ◽  
Understory Species ◽  
Crown Area ◽  
Understory Plants ◽  
Species Specific ◽  
Best Fit

Understory plants are important components of forest ecosystem productivity and diversity. Compared to biomass models of overstory canopy trees, few are available for understory saplings and shrubs and therefore their roles in estimation of forest carbon pools are often ignored. In this study, we harvested 24 understory species including 4 saplings, 9 tree-like shrubs and 11 typical shrubs in coniferous and broadleaved mixed forest in northeastern China and developed the best fit allometric equations of above- and below-ground and total biomass by species-specific or multispecies using morphological measurements of basal diameter, height and crown area as independent variables. The result showed that single basal diameter, height or crown area had good explanatory power for both species-specific and multispecies (p<0.001). The best-fit models included only basal diameter in sapling and tree-like shrubs, and combinations of crown area, height, and basal diameter in typical shrubs. The logarithmic model was most desired among the 4 model forms of linear, quadratic, multiple linear and logarithmic, for species-specific and multispecies. The models we developed should help the estimation of forest ecosystem carbon stocks, especially for belowground component, and provide tools for quantification of individual species biomass of understory plants.

scholarly journals Long-term Care Financing: Inserting Politics and Resource Allocation in the Debate Comment on "Financing Long-term Care: Lessons From Japan"

2019 ◽  
Vol 9 (2) ◽  
pp. 77-79 ◽  
Author(s):  
Cristiano Gori
Keyword(s):  
Resource Allocation ◽  
Long Term Care ◽  
Economic Resources ◽  
The Other ◽  
The Political ◽  
Care Needs ◽  
Term Care ◽  
International Debate ◽  
Financing Policies

The ageing of the countries’ populations, and in particular the growing number of the very old, is increasing the need for long-term care (LTC). Not surprisingly, therefore, the financing of LTC systems has become a crucial topic across the Organisation for Economic Co-operation and Development (OECD). In the last three decades, various financing policies have been carried out in different countries and the related international debate has grown. The latter has so far focused mostly on the different alternatives to collect economic resources to pay for care. The international debate needs now to focus also on other issues, so far less discussed. One is the politics of LTC: the degree and nature of the political interest in LTC, that affects the size and profile of public financing. The other is resource allocation: how different services and benefits are distributed among people with different care needs, that determines if resources made available are optimized. If we do not pay more attention to these issues – inextricably connected to policies aimed to collect funds – our understanding of LTC financing will remain inevitably limited.

scholarly journals Laboratory environment monitoring and specimen transport robots

2019 ◽  
Vol 8 (4) ◽  
pp. 313
Author(s):  
Yi-Chang Wu ◽  
Huan-Chun Wang
Keyword(s):  
Operating System ◽  
Resource Allocation ◽  
Humidity Sensor ◽  
The Other ◽  
Robotic Arm ◽  
Environment Monitoring ◽  
Thermal Camera ◽  
Laboratory Environment ◽  
Robot Operating System ◽  
And Control

Robots have been used in various areas to replace manpower, reduce costs, and facilitate more effective resource allocation. This study sought to assist the business of the bureau by developing two robots using the Robot Operating System. The developed robots have autonomous intelligent navigation functions and are suited to monitor the environment of <br /> the laboratories in the bureau. One robot had a temperature and humidity sensor and an infrared thermal camera, and it could be used to patrol and monitor the laboratory environment. The other robot had drawers in which specimens could be placed; robotic arm in the elevator could coordinate and control elevators, enabling the robot to move and transport specimens autonomously. Plenty of tests were conducted to verify the feasibility <br /> and practicality.

Resource allocation patterns of two California-Sonoran desert ephemerals

Oecologia ◽  
1980 ◽  
Vol 46 (1) ◽  
pp. 86-91 ◽  
Author(s):  
D. D. Clark ◽  
J. H. Burk
Keyword(s):  
Resource Allocation ◽  
Sonoran Desert ◽  
Allocation Patterns

scholarly journals The effect on rats of practical diets containing different protein and energy levels

1983 ◽  
Vol 17 (4) ◽  
pp. 330-335 ◽  
Author(s):  
D. J. Ford ◽  
R. J. Ward
Keyword(s):  
Energy Level ◽  
Lower Energy ◽  
Energy Levels ◽  
Amino Acid Content ◽  
Bodyweight Gain ◽  
The Other ◽  
Food Utilization ◽  
Fat Deposits ◽  
Consequent Increase ◽  
Different Levels

Rats of 3 strains were fed diets of natural ingredients in 4 different laboratories. The diets contained different levels of protein and energy within ranges comparable to those found in existing laboratory diets. Energy level over the range examined appeared to exert greatest influence on bodyweight gain, but had no effect on food intake. The diet with the highest amino acid content was consumed in smaller amounts than the other diets. Food utilization was less efficient in the lower energy diets. Fat deposition was reduced in animals fed the lowest energy diet. It is concluded that energy level of the diet exerts an effect on the rate of bodyweight gain in rats, but that for longer-term studies a reduced energy level may be beneficial by leading to smaller fat deposits with consequent increase in longevity.

Load Balancing pada Cloud Computing dengan Sumber Daya Terbatas Menggunakan Penggabungan Algoritma ESCE dan Throttled

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Endang Wahyu Pamungkas ◽  
Divi Galih Prasetyo Putri
Keyword(s):  
Resource Allocation ◽  
Cloud Computing ◽  
Load Balancing ◽  
High Reliability ◽  
Cloud Service ◽  
The Other ◽  
Limited Resources ◽  
Resource Quality ◽  
Cloud Computing Environment ◽  
Load Balancing Algorithm

Recently cloud computing technology has been implemented by many companies. This technology requires a really high reliability that closely related to hardware specification and management resource quality used. Adequate hardware would make resource allocation easier. On the other hand, resource allocation will be harder if the resources are limited. This is a common condition in a developing cloud service provider. In this paper, a load balancing algorithm to allocate resources in cloud computing environment that has limited resources has been proposed. This algorithm is developed by taking the advantages of the existing algorithms, Equally Spread Current Execution and Throttled. We merge those algorithm without losing the advantages and we try to eliminate the shortcoming of each algorithm. The result shows that this algorithm is able to give a significant improvement in the limited resources environment. In addition, the algorithm also able to compete with the other algorithm in the more adequate resource environment. Based on the consistent results, this algorithm is expected to be more adaptive in different resources environment.

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