منابع مشابه
Non-Separability and Substitutability
The design and implementation of environmental policy often involves more than one pollutant, and must consider pollution as a byproduct of the production of marketable output. In this paper, we test the implicit assumption in the empirical literature that (1) production of marketable output, pollution, and abatement are separable, and (2) different pollutants can be abated separately. Using un...
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Genomic banks are fed continuously by large sets of DNA or RNA sequences coming from high throughput machines. Protein annotation is a task of first importance with respect to these banks. It consists of retrieving the genes that code for proteins within the sequences and then predict the function of these new proteins in the cell by comparison with known families. Many methods have been design...
متن کاملساختار کلاسهایی از حلقه های z- موضعی و c- موضعی the structure of some classes of z-local and c-local rings
فرض کنیمr یک حلقه تعویض پذیر ویکدار موضعی باشدو(j(r رایکال جیکوبسن r و(z(r مجموعه مقسوم علیه های صفر حلقه r باشد.گوییم r یک حلقه z- موضعی است هرگاه j(r)^2=. .همچنین برای یک حلقه تعویض پذیر r فرض کنیم c یک عنصر ناصفر از (z( r باشد با این خاصیت که cz( r)=0 گوییم حلقه موضعی r یک حلقه c - موضعی است هرگاه و{0 و z(r)^2={cو z(r)^3=0, نیز xz( r)=0 نتیجه دهد که x عضو {c,0 } است. در این پایان نامه ساخ...
The American Local News Corpus
We present the American Local News Corpus (ALNC), containing over 4 billion words of text from 2, 652 online newspapers in the United States. Each article in the corpus is associated with a timestamp, state, and city. All 50 U.S. states and 1, 924 cities are represented. We detail our method for taking daily snapshots of thousands of local and national newspapers and present two example corpus ...
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ژورنال
عنوان ژورنال: Nordicom Review
سال: 2021
ISSN: 2001-5119
DOI: 10.2478/nor-2021-0001