نتایج جستجو برای: the environmental problems

تعداد نتایج: 16166024  

Journal: :New South Wales Public Health Bulletin 1992

Journal: :space ontology international journal 2015
esmail salehi lobat zebardastb

human habitat change is a complicated issue that many factors play different roles in its formation and distribution. considering this complication, a more comprehensive and holistic approach is needed for a better understanding and management of those factors. the causal frameworks are among systemic and integrated methods for addressing the causes of environmental problems and the relationshi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

به طور کلی در فرآیندهای مارکوف ارگودیک دو بعدی یافتن فرم بسته توزیع ایستا، تنها برای حالات خیلی خاص امکان پذیر است. با توجه به این مشکل و نیز با توجه به اهمیت توزیع ایستا، بررسی و مطالعه رفتار مجانبی توزیع ایستای این فرآیندها مورد توجه قرار گرفته است. زنجیر قدم زدن تصادفی دو بعدی که در برخی متون به آن، فرآیند qbd دو طرفه نیز می گویند، یکی از این فرآیندها است. یک فرآیند qbd زمان گسسته یک زنجیر م...

Journal: :Respiration physiology 2001
P J Gergen

Respiratory diseases are a frequent reason for using health care. In 1995-1996, diseases of the respiratory tract (ICD 460-519) contributed seven of the top 15 reasons for visits to physician offices among children under 15 years of age in the United States. Environmental tobacco smoke (ETS) is a wide-spread environmental pollutant that has been long linked with respiratory problems. This paper...

Climate change is a complicated issue with many factors playing role in its formation and distribution. Considering this complication, a comprehensive and holistic approach is needed for a better understanding and management of those factors. The causal frameworks are among systemic and integrated methods for addressing the causes of environmental problems and the relationships that exist betwe...

Journal: Pollution 2016

Climate change is a complicated issue with many factors playing role in its formation and distribution. Considering this complication, a comprehensive and holistic approach is needed for a better understanding and management of those factors. The causal frameworks are among systemic and integrated methods for addressing the causes of environmental problems and the relationships that exist betwe...

Journal: :Journal of Environmental Psychology 2000

Journal: : 2023

Purpose. Analysis from the thermodynamic point of view causes global environmental problems and possibilities overcoming them. Results. The application laws thermodynamics to attempts solve is analyzed. existence life biosphere as a whole determined by flow energy, intensity which per unit weight living beings significantly exceeds specific energy transformation in Sun. From second law thermody...

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