Scientists predict the earth is facing 40-to-60 years of climate change, even if emissions of carbon dioxide and other global warming gases stopped today. One inevitable consequence of the greenhouse gases already in the atmosphere will be an increase in the frequency and severity of natural disaster events. Global Warming, Natural Hazards, and Emergency Management documents the imperative need for communities to prepare for the coming effects of climate change and provides a series of in-depth, road-tested recommendations on how to reduce risks for communities and businesses.
Normally the frequency divider designed by Boole algebra and to design a frequency divider with any divide factor, we have to repeat all over again every design step as the same. So to avoid of wasting time and money, instead of using traditional Boole algebra in digital technical we replace it by mathematical models in high algebra. And because of that we can design frequency dividers use computer. 1. Modeling of function circuit
This paper presents the results of a series of experiments which examine the impact of two information status categories (given and new) and frequency of occurrence on pitch accent realisations. More speciﬁcally the experiments explore within-type similarity of pitch accent productions and the effect information status and frequency of occurrence have on these productions. The results indicate a signiﬁcant inﬂuence of both pitch accent type and information status category on the degree of withintype variability, in line with exemplartheoretic expectations. ...
We propose a novel method to automatically acquire a term-frequency-based taxonomy from a corpus using an unsupervised method. A term-frequency-based taxonomy is useful for application domains where the frequency with which terms occur on their own and in combination with other terms imposes a natural term hierarchy. We highlight an application for our approach and demonstrate its effectiveness and robustness in extracting knowledge from real-world data.
Cognitive theories of dialogue hold that entrainment, the automatic alignment between dialogue partners at many levels of linguistic representation, is key to facilitating both production and comprehension in dialogue. In this paper we examine novel types of entrainment in two corpora—Switchboard and the Columbia Games corpus. We examine entrainment in use of high-frequency words (the most common words in the corpus), and its association with dialogue naturalness and ﬂow, as well as with task success. ...
This paper describes a novel approach for the automatic generation and evaluation of a trivial dialogue phrases database. A trivial dialogue phrase is deﬁned as an expression used by a chatbot program as the answer of a user input. A transfer-like genetic algorithm (GA) method is used to generating the trivial dialogue phrases for the creation of a natural language generation (NLG) knowledge base. The automatic evaluation of a generated phrase is performed by producing n-grams and retrieving their frequencies from the World Wide Web (WWW).
In 1877 the Italian astronomer Giovanni Schiaparelli (1835-1910) observed some
markings on the planet Mars which he referred to as canali. This was mistranslated
into English as canals, suggesting man-made structures and the existence of
intelligent life on Mars, instead of channels, which occur naturally. The idea of
canals appealed to the imaginations of scientists and novelists alike. The astronomer
Percival Lowell used it as the basis for his 'scientific observations', recorded in such
works as Mars and its Canals (1908). The novelist H.G.
1. Các khái niệm cần lưu ý:
1.1. Khối lượng, m:
Theo định luật Newton, lực F = m x a. Khối lượng m º F Û gia tốc a = 1 m/s2.
1.2. Bậc tự do, DOF:
Có hai loại sau: MDOF, hệ nhiều bậc tự do; SDOF, hệ một bậc tự do.
1.3. Tần số dao động tự nhiên và mode dao động tự nhiên (Natural Frequency, dao động mà công trình có
được do trọng lượng bản thân của nó, không có sự tác động của tải trọng ngoài)
Trong phần này ta sẽ xem xét hai khái niệm của hai thông số hệ thống bậc 2 được dùng để miêu tả đường đặc tính đáp ứng thời gian. Đó là tần số tự do (natural frequency) và hệ số tắt dần (damping ratio).
- Tần số tự do (Natural Frequency, ωn): là tần số của dao đông trong hệ thống mà không có sự tắt dần.
Learning how to write a coherent, effective text is a difficult and protracted
achievement of cognitive development that contrasts sharply with the acquisition of
speech. By the age of 5, spoken language is normally highly developed with a working
vocabulary of several thousand words and an ability to comprehend and produce
grammatical sentences. Although the specific contribution of a genetic predisposition
for language learning is unsettled, it is apparent that speech acquisition is a natural part
of early human development.
Due to the success of the first edition of
The Engineering Handbook
published in 1995 I am pleased to
provide the second edition ten years later fully updated and expanded.
The purpose of
The Engineering Handbook, Second Edition
is to provide in a single volume a ready
reference for the practicing engineer in industry, government, and academia. The book in its comprehensive
format is divided into 30 sections which encompass the field of engineering and includes 19
brand new chapters and 131 fully updated contributions.
The DOE’s Carbon Sequestration Program also
supports global initiatives, such as the Carbon
Sequestration Leadership Forum (CSLF), an
international climate change initiative that focuses on
the development of technologies to cost-effectively
capture and sequester CO2, and the International Energy
Agency (IEA). The Carbon Sequestration Program
is also providing technical and financial support to
international projects through the Core R&D MVA
Program. Projects include the Weyburn Project (see
In any structure or assembly, certain whole-body motions and certain deformations are more common than others; the most likely (easiest to excite) motions will occur at certain natural frequencies. Certain exciting or forcing frequencies may coincide with the natural frequencies (resonance) and give relatively severe vibration responses. We will now discuss the much-simplified system shown in Fig.
In a world where the population is expected
to rise to 10 billion by the turn of the century,
accelerating urbanisation and the increasing
the demand for food and energy; taking action
to secure sufficient water of acceptable quality
for humans and nature is as urgent as ever.
Climate change is projected to aggravate water
stress in many regions, especially where water
is already scarce and where the demand for
water is growing rapidly. Increased frequency
of floods is also projected.
We study the ac-conductivity in linear response theory in the general framework of ergodic magnetic Schr¨dinger operators. For the Anderson model, o if the Fermi energy lies in the localization regime, we prove that the ac1 conductivity is bounded from above by Cν 2 (log ν )d+2 at small frequencies ν. This is to be compared to Mott’s formula, which predicts the leading term to 1 be Cν 2 (log ν )d+1 .
In this paper, we study the growth of sX(L), the number of simple closed
geodesics of length ≤ L on a complete hyperbolic surface X of finite area.
We also study the frequencies of different types of simple closed geodesics on
X and their relationship with the Weil-Petersson volumes of moduli spaces of
bordered Riemann surfaces.
Ross students have a student records file which is stored electronically with secured access. This file contains
admissions material, test scores, unofficial copies of academic records, memoranda, correspondence, and
notes which academic advisors have made about their conversations with a student. Information of a sensitive
nature may be removed from the academic advising file at the discretion of the School Registrar or at the
request of the student and placed into a confidential file.
(BQ) Part 1 book "Vibrations" has contents: Single-degree-of-freedom systems - subjected to transient excitations, multiple degree-of-freedom systems - governing equations, natural frequencies, and mode shapes, multiple degree of freedom systems - general solution for response and forced oscillations, vibrations of beams.
CHAPTER 23 VIBRATION AND SHOCK Wayne T\istin
Equipment Reliability Institute Santa Barbara, California
23.1 23.2 23.3 23.4
VIBRATION ROTATIONAL IMBALANCE VIBRATION MEASUREMENT ACCELERATION MEASUREMENT
23.5 SHOCK MEASUREMENT AND ANALYSIS 23.6 SHOCKTESTING SHAKE TESTS FOR ELECTRONIC ASSEMBLIES
692 695 705
In any structure or assembly, certain whole-body motions and certain deformations are more common than others; the most likely (easiest to excite) motions will occur at certain natural frequencies.