Recovery of orthometric heights from ellipsoidal heights using offsets method over Japan
نویسندگان
چکیده
منابع مشابه
Implementing NGS Draft Guidelines for GPS-Derived Orthometric Heights
The need to determine accurate heights relative to the North American Vertical Datum of 1988 (NAVD 88) is more prevalent today than ever before. Projects are no longer isolated unto themselves, or designed in a box. Due to global and regional issues such as the environment, and municipal planning, the need to represent the topographic features of the earth accurately in three dimensions is of p...
متن کاملResearch on Fall Prevention and Protection from Heights in Japan
The high frequency of fall accidents is a serious problem in Japan. Thus, more stringent countermeasures for preventing falls from scaffolds were developed and incorporated into institutional guidelines. These countermeasures aim to decrease deaths caused by falls from scaffolds. Despite the improvements in such measures, however, the rate of accidental fall deaths remains high in Japan's const...
متن کاملEstimating Heights Using Auxiliary Functions
Several recent papers construct auxiliary polynomials to bound the Weil height of certain classes of algebraic numbers from below. Following these techniques, the author gave a general method for introducing auxiliary polynomials to problems involving the Weil height. The height appears as a solution to a certain extremal problem involving polynomials. We further generalize the above techniques...
متن کاملAn Empirical Method for Estimating Surf Heights from Deep Water Significant Wave Heights and Peak Periods in Coastal Zones Wit
Accurate and timely surf forecasts communicated in a clear, concise manner are essential in planning nearshore activities. In Hawaii, a large population of recreational enthusiasts comprised of both residents and visitors use surf forecasts on a daily basis. Forecasts are vital to commercial ventures, coastal engineers, ecosystem and geophysical researchers, and governmental coastal planners in...
متن کاملEncrypted Messages from the Heights of Cryptomania
How flexible can encryption be? This question motivated the invention of public key encryption that began modern cryptography. A lot has happened since then. I will focus on two lines of research that I find especially interesting (mainly the second) and the mysterious gap between them. The first line of research asks: how flexibly can encryption handle compu-tation? The answer seems to be " ve...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Earth, Planets and Space
سال: 2015
ISSN: 1880-5981
DOI: 10.1186/s40623-015-0306-z