scholarly journals THE USE OF SITE IN FOREST MANAGEMENT

1953 ◽  
Vol 29 (2) ◽  
pp. 128-136 ◽  
Author(s):  
G. Angus Hills
Keyword(s):  
Forest Succession ◽  
Regional Climate ◽  
Local Area ◽  
Site Classification ◽  
Forest Research ◽  
Local Areas ◽  
Site Evaluation ◽  
Forest Manager ◽  
Zonal Soil

Total site is that combination of environmental features with which the forest manager must deal in the growing and harvesting of forest crops. It is not enough to know the kind of regional climate, the zonal soil type and the regional cover type. The forester must know the significant features of each local area with which he has to deal.It is essential to know the variations in soil profile and forest communities at every stage in forest succession for each specific landform and climatic region. It is also necessary to know the effect of man's activities upon forest succession and soil characteristics. For the actual management of any specific forest area, a forester requires a knowledge of total site, not merely a classification of site.It is hoped that the proposed site classification may provide a scientific regional framework into which may be placed those significant site features with which a practicing forester must deal. The objectives of this site classification are twofold:1. To provide a systematic approach to forest description and site evaluation of local areas.2. To provide a framework to facilitate the application of results of forest research and practice to other areas.

Ecological Site Classification of Florida Keys Terrestrial Habitats

Biotropica ◽  
1992 ◽  
Vol 24 (4) ◽  
pp. 488 ◽  
Author(s):  
Michael S. Ross ◽  
Joseph J. O'Brien ◽  
Laura J. Flynn
Keyword(s):  
Florida Keys ◽  
Site Classification ◽  
Ecological Site ◽  
Terrestrial Habitats

Determination of seismic site classification of seismic recording stations in the Himalayan region using HVSR method

2019 ◽  
Vol 116 ◽  
pp. 304-316 ◽  
Author(s):  
P. Anbazhagan ◽  
K.N. Srilakshmi ◽  
Ketan Bajaj ◽  
Sayed S.R. Moustafa ◽  
Nassir S.N. Al-Arifi
Keyword(s):  
Himalayan Region ◽  
Site Classification ◽  
Seismic Recording ◽  
Hvsr Method

Modeling the Quasigeoid Heights on Local Areas of the Earth Surface by the Results of Expansion into a Generalized Fourier Series

2020 ◽  
Vol 28 (4) ◽  
pp. 82-94
Author(s):  
V.F. Kanushin ◽  
◽  
I.G. Ganagina ◽  
D.N. Goldobin ◽  
◽  
...  
Keyword(s):  
Fourier Series ◽  
Orthonormal System ◽  
Local Area ◽  
Spherical Functions ◽  
Trigonometric Functions ◽  
Computing Technology ◽  
Generalized Fourier Series ◽  
The Earth ◽  
Local Areas ◽  
Discrete Values

The article presents two methods of modeling discrete heights of a quasigeoid on a local area of the earth’s surface using a gen-eralized Fourier series. The first method is based on modeling the characteristics of the earth’s gravitational field on a plane and involves the use of a two-dimensional Fourier transform by an orthonormal system of trigonometric functions. The second method consists in the expansion of the quasigeoid heights in a Fourier series by an orthonormal system of spherical functions on a local area of the earth’s surface. The errors of approxima-tion of the obtained discrete values of the quasigeoid heights on the local territory are analyzed. It is shown that with the modern computing technology, the most accurate and technologically simple way to model the quasigeoid heights on local areas is to expand them into a Fourier series by an orthonormal system of spherical functions.

Local Triads of Sensors to Mine Collocated Acceleration for Structural Health Monitoring of an Aluminum Beam With Bolted Joints

2014 ◽  
Author(s):  
Ioannis T. Georgiou
Keyword(s):  
Aluminum Alloy ◽  
Research Effort ◽  
Complex Structure ◽  
Three Dimensional ◽  
Local Area ◽  
Bolted Joints ◽  
Critical Area ◽  
Local Areas ◽  
Vibration Wave ◽  
Aluminum Beam

Several aerospace, space, and naval platforms process a core structural system assembled wholly or partially by aluminum alloy elementary structures, such as beams, plates, and cylinders, among others. Aluminum alloys are preferred due to light weight and corrosion resistance. The formed complex aluminum alloy structure is characterized by a number of joints where different structural elements are joined together. Areas with joints are prone to damage. Some joints are made by bolts for assembly and reassembly purposes. A loose bolt can be considered as a man-induced damage in the whole complex structure. This damage can result in a catastrophic failure. The vibration and elastic wave propagation-based monitoring of a critical area bearing bolt joints can offer a reliable monitoring. In this work, we present a basic experimental research effort. We consider an aluminum alloy beam composed of two sunbeams joined by means of two bolts. The bolts are healthy in the sense that they are tight to the level of design recommended force. We use three mono-axial sensors in three dimensional arrangement and mine vibration-wave data in the form of collocated signals. These signals are analyzed by means of the proper orthogonal decomposition transform. The local tri-axial arrangement of mono-axial sensors is used to collect collocated acceleration signals in two local areas. One of the local areas contains the bolted joints. The other local area contains the free end of the structure. This is not considered as a critical area but a boundary accessible area. The POD modal structures of collocated vibration signals are quite different. The behavior is compared to that of structure without bolted joints.

Site classification of Indian strong motion network using response spectra ratios

2017 ◽  
Vol 22 (2) ◽  
pp. 419-438 ◽  
Author(s):  
Sumer Chopra ◽  
Vikas Kumar ◽  
Pallabee Choudhury ◽  
R. B. S. Yadav
Keyword(s):  
Strong Motion ◽  
Response Spectra ◽  
Site Classification ◽  
Strong Motion Network
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