Optimal Length of Leys in an Area with Winter Damage Problems

نویسنده

  • A. R. KRISTENSEN
چکیده

A model for investigation of the optimal economic life cycle of grass leys with winter damage problems in northern Norway and the threshold of winter damage before it is profitable to reseed grasses is presented. A 2-level hierarchic Markov process has been constructed using the MLHMP software. The model takes uncertainty concerning the yield potential, damage estimation and weather dependent random fluctuations into account. A Kalman filter technique is used for updating of knowledge on yield potential and damage level.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Optimal Economic Length of Leys: a Dynamic Programming Approach

A model is presented to investigate the optimal economic life cycle of grass leys with winter damage problems in northern Norway and to determine the threshold of winter damage before it is profitable to reseed. A two-level hierarchic Markov process has been constructed using the MLHMP software. The model takes uncertainty concerning yield potential, damage estimation and weather dependent rand...

متن کامل

Investigation of Winter Survival of Safflower Genotypes in Isfahan-Iran

Too often crop production is facing with different intensity of cold damage. In some years the damage is severe and has a large social and economic consequence. Therefore, selection and introduction of cold tolerant cultivars is very effective in reducing cold damage and increasing crop production. Frequently, in winter safflower yield trails in Isfahan province, depending on the intensity of w...

متن کامل

Static and Dynamic Analyze of the an Aluminum Pad used as Portable Roadway

Due to geographic and climatic conditions in mountainous northwest area, Roads in these areas are often covered with snow, ice and mud. Hence Transportation of equipment and soldiers encounter hardship and difficulties in rural area and specially outposts. To solve these problems, it is needed to fabricate portable roadway or traction mats. These high strength mats cover surface of roads and ar...

متن کامل

An Investigation of Physical-Social Resilience at Urban Historical Declined Area with an Emphasis on Sustainable Urban Form by Optimal Distance Average Method (Case Study: Urban Historical Declined Area of Tehran)

Urban areas today face a number of structural problems that have a lot of impact on the extent of damages. These changes are evident in most cases, in addition to the physical dimensions, in both social and economic dimensions, one of which is exhausting. The concept of urban resilience, considering the extent of these changes, seeks to predict the damage, as easily as to stabilize a system tha...

متن کامل

تعیین اندازه مناسب کرت‌های برآورد روان‌آب و رسوب آبخیزهای کوچک در حوزه آبخیز سنگانه، استان خراسان رضوی

Erosion plots are basically used for studying erosion processes and many related problems. However, the possibility to extend the results of experimental plots to surrounding watersheds is rarely taken into account. In the present study, an attempt was made to study on the accuracy of soil erosion plots in estimation of runoff and sediment yield from small watersheds. Towards this attempt, 12 ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002