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Chapter and Conference Paper
Time-Multiplexed Stereoscopic Display Technology Based on Side-Dynamic Areal Backlight
We introduce the selective backlight and direct scanning backlight, and analyze their advantages and disadvantages. Based on the above methods, we propose the side-dynamic areal backlight, which is used in the...
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Article
Perturbation of symmetries of Birkhoff system and adiabatic invariants
The perturbation of symmetries of the free Birkhoff system under small excitation is discussed. The concept of high-order adiabatic invariant is presented, and the form of adiabatic invariants and the conditio...
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Article
Lie symmetries and conserved quantities of rotational relativistic systems
The Lie symmetries and conserved quantities of the rotational relativistic holonomic and nonholonomic systems were studied. By defining the infinitestinal transformations' generators and by using the invarianc...
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Article
Algebraic structures and poisson integrals of relativistic dynamical equations for rotational systems
The algebraic structures of the dynamical equations for the rotational relativistic systems are studied. It is found that the dynamical equations of holonomic conservative rotational relativistic systems and t...
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Article
Growth effect of manchurian ash in mixed stands
The growth of ash (Fraxinus mandshurica) in different mixed stands with larch (Larix gmelini), Korean pine (Pinus koraiensis) and spruce (Picea koraiensis) had been investigated. Meanwhile, the relationship betwe...
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Article
Integration method for the dynamics equation of relative motion of variable mass nonlinear nonholonomic system
In this paper, the integration methods of dynamics equations of relative motion of variable mass nonlinear nonholonomic system are given such as the gradient method, the single-component method and the field m...
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Article
Comparison of four community structure types for dahurian larch plantations
Community properties of dahurian larch (Larix gmelini) plantations at the Experimental Station of Laoshan were studied. Results show that under the different distributions of the combines of tree layer of dahuria...
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Article
A new method for increasing the productivity of larch plantation
A new method for increasing the productivity of larch plantation was pointed out by applying the edge effect in production in this paper. For the radiation of sunlight is identical in the same unit area of the...
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Article
Dynamic thinning system for larch plantation
Systematic researches were carried out in dahurian larch (Larix gmelini) plantation in the spring of 1958 at Maoershan Forest Farm attached to Northeast Forestry University. First of all, a new tree classifica...
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Article
The construction of some forestry tables for dahurian larch plantations
Several growth models were selected to fit data of dahurian larch plantations using nonlinear regression analysis. The best models were used to construct the site index table, the 2-way volume table and the gr...
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Article
Studies on biomass and productivity for dahuian larch plantations
The biomass and productivity for dahurian larch (Larix gmelini) plantations of four structure types were measured. The biomass of trees, understory, herb and litter was surveyed using methods of average standard ...
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Article
Study on the natural regeneration effect of manchurian ash by opening up effect belt in dahurian larch plantation
Opening up effect belt in dahurian larch (Larix gmelini) plantation can significantly promote the growth and development of manchurian ash (Fraxinus mandshurica) natural regeneration seedlings. The quantity, grow...
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Article
Study on relationships among seedling quality and survival rate, stocking percentage and growth
Effects of various seedling classes and root cutting treatments on the survival rate, stocking percentage and the growth of height and collar diameter in young stands of korean pine (Pinus koraiensis), mongolian ...
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Article
Ordination and gradient analysis of coniferous forest in Daxinganling
In this paper, the quantitative approach is applied on the study of coniferous forest based on the data which were collected by the field investigation in Daxinganling region. The main purpose is objectively t...
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Article
A preliminary study on forest edge effect and application
Researches and analyses were carried on the mechanism of forest edge effect by the classification of its types in forest ecosystem. Two kinds of practical models were put forward to extricate forestry from “Tw...
