Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Comparison of three methods to determine optimal road spacing for forwarder-type logging operations...
File-System Structure File-System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency and Performance Recovery Log-Structured File Systems NFS Example: WAFL File System
To describe the details of implementing local file systems and directory structures To describe the implementation of remote file systems To discuss block allocation and free-block algorithms and trade-offs
File structure Logical storage unit Collection of related information File system resides on secondary storage (disks) File system organized into...
Some reciprocating open-type compressors used with water cooled systems
incorporate a cylinder head cooling feature in the form of a water circuit
through the compressor head. Supply water enters this before entering the
condenser (see Figure 16).
A rapid indicating thermometer is recommended for taking water temper-
atures because the water regulating valve responds to the operating head
pressure and will vary the temperature of the water as it modulates. It is
also necessary, when adjusting the water regulator, to be able to take inlet and
outlet temperatures quickly.
This user manual is part of the WinCC flexible documentation. The manual provides you with
a complete overview of configuring with WinCC flexible. The manual supports you in creating
new projects, in the procedure used during configuration and in transferring a project to an
The manual is intended for newcomers, operators and configuration engineers involved in
configuration, commissioning, installation and service with WinCC flexible.
The help integrated in WinCC flexible, the WinCC flexible Information System, contains
Forests are an integral part of global sustainable development. The World Bank
estimates more than 1.6 billion people to be dependent on forests for their livelihoods
with some 300 million living in them. The forest product industry is a source of
economic growth and employment, with global forest products traded internationally
is estimated at $327 billion. The Food and Agriculture Organization (FAO) estimates
that every year 130,000 km² of the world's forests are lost due to deforestation.
Move gates to 10 percent open as measured at the scale on the servomotors and check
to see if the gate position needle indicates 10 percent. If the gate position needle does
not indicate 10 percent, move the eccentric adjustment in the restoring shaft bell crank
to position it correctly (photograph 3). Move it toward the restoring shaft if there is
over travel and away from the restoring shaft if there is under travel (figure 7). Move
the gates to 90 percent, as measured at the servomotor scale, and check the gate position
indicator needle. It may...
Although the Standard & Poor's 500 is the most commonly used measure of the performance of
the U. S. stock market, it is sometimes argued that, because this index is so heavily populated
with high quality, large capitalization stocks, it may not be an appropriate benchmark with which
to compare a mutual fund which may be invested in lower quality, smaller capitalization stocks.
The obvious refutation: If one can obtain a higher return by investing in...
The mutual fund data come from the 1998 CRSP Survivor Bias FreeMutual Fund Database.
Our initial sample contains 2,609 domestic equity mutual funds. We exclude multiple share
classes for the same fund as well as funds with only a year or less of available returns. The
initial sample is used to obtain the values of the prior parameters in the empirical Bayes pro-
cedure mentioned previously.
Over the past few years, there has been a fundamental shift in data storage, management,
and processing. Companies are storing more data from more sources in more
formats than ever before. This isn’t just about being a “data packrat” but rather building
products, features, and intelligence predicated on knowing more about the world
(where the world can be users, searches, machine logs, or whatever is relevant to an
The value of the UK LCEGS sector was £106.5 billion in 2007/8. In terms of size, this puts the low
carbon and environmental economy somewhere between the UK’s healthcare and construction
The UK is the world’s sixth largest low carbon and environmental economy, with 3.5% of global market
share. As shown in Figure 2, the Environmental sector accounts for £22.3 billion (21%) of total UK
market value, Renewable Energy for £31.
Besides conducting national censuses, the CBS is a primary source of information for multi-sectoral
data in the country. It was in the early nineties that the CBS established a separate Household Survey
Section (HSS). This section initiated four small-scale surveys with funding from the GoN. Then a
comprehensive survey for Nepal was launched by the CBS in 1995/96 through its multi-topic
(consumption, income, housing, labor markets, education, health etc.) national household survey
called the Nepal Living Standards Survey (NLSS I) with financial assistance from the World Bank.
There are four major categories of catastrophic failure which exists in the boiler itself.
1. Melt down. This is a result of the heating surface metal reaching its melting point. It is a result of the boiler operating on very low water conditions. This by itself will not cause an explosion but will do major damage to the boiler and create a dangerous situation which could lead to an explosion.
The expansion of agriculture to open access forest lands is a major environmental
consequence of poverty, food insecurity, and landlessness in many countries, notably in the tropics.
Although nominally managed by the state, forests made accessible by the construction of roads
become de facto “open access” in the wake of logging operations by private concessionaires, who
often fail to comply with their obligations to manage the forest sustainably after harvest.
The cash ﬂows diagram for the mexican CAT bond is described in Figure 4.
CAT-MEX Ltd. issues the bond that is placed among investors and invests the
proceeds in high quality assets within a collateral account. Simultaneous to the
issuance of the bond, CAT-MEX Ltd. enters into a reinsurance contract with
SRC. The proceeds of the bond will also serve to provide SRC coverage for earth-
quakes in Mexico in connection with an insurance agreement that FONDEN has
entered with the European Finance Reinsurance Co. Ltd., an indirect wholly-
owned subsidiary of SRC.
In addition, the distributions of deaths by age and by cause in Delhi are very different
from those in the U.S. In the U.S., over 70 percent of all deaths occur after the age of 65. In
Delhi, over 70 percent of all deaths occur before the age of 65, with over 20 percent occurring
before the age of five. Furthermore, 46 percent of all non-trauma deaths in the U.S. are
attributable to cardiovascular disease compared to only 23 percent in Delhi.' Because the main
effects of acute exposure to air pollution on daily deaths occur through impacts on...
Whether mode choice yields expected impacts on daily activity level remains an
open question. Available research confirms declining activity levels for children (Dietz
and Gortmaker, 2001; Trost et al, 2002) and adolescents (Sallis, et al, 2000). However,
studies evaluating the role of walking to school have been mixed in finding statistically
significant increases in children's daily activity level (Krizek et al, 2004).
Reports on Computer Systems Technology
The Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing technical leadership for the nation’s measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analysis to advance the development and productive use of information technology.
What is most needed is to adjust the requirements of SEA and EIA directives. The logical order of
these assessments should be ensured, as should the respect of the results of SEA in subsequent EIA
procedures. Repeated assessment (on the same level of details) shall be avoided, whereas at the
same time the availability of information from earlier relevant SEA procedures should be ensured in
subsequent EIA procedures.
A few studies have provided information on longitudinal trends in VOC concentrations
and emissions in new houses (Lindstrom et al., 1995, Hodgson et al., 2002). In four
manufactured houses, the area specific emission rates of formaldehyde and hexanal were
generally similar at the beginning and end of the 7.5-month study period demonstrating that the
sources of these compounds were not depleted rapidly (Hodgson et al., 2000).