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Andrews University

Chuo Kikuu cha Andrews Chapokea Ruzuku ya Pili ya Utafiti kutoka NSF ya Mwaka 2024

Fedha zitatumika kwa ajili ya utafiti wa ushirikiano kuhusu mawimbi ya redio ya masafa ya juu.

October 2, 2024
October 2, 2024
Chuo Kikuu cha Andrews kimetunukiwa ruzuku yake ya pili ya utafiti ya mwaka 2024 kutoka kwa Shirika la Taifa la Sayansi.

Chuo Kikuu cha Andrews kimetunukiwa ruzuku yake ya pili ya utafiti ya mwaka 2024 kutoka kwa Shirika la Taifa la Sayansi.

[Picha: Christa McConnell]

Chuo Kikuu cha Andrews kilichopo Berrien Springs, Michigan, Marekani, kimetunukiwa ruzuku ya utafiti kutoka kwa Taasisi ya Kitaifa ya Sayansi (NSF). Ruzuku hiyo itaelekezwa kwenye utafiti wa ushirikiano unaofanywa na Eun-Hwa Kim, profesa wa utafiti wa fizikia, na Jay Johnson, profesa wa uhandisi. Washirika wa ushirikiano Chuo Kikuu cha Johns Hopkins na Chuo Kikuu cha Scranton walipokea ruzuku tofauti. Chuo Kikuu cha Andrews kitakuwa taasisi inayoongoza kwenye mradi huu wa utafiti.

Mradi, “Athari za Kutofautiana kwa Msongamano wa Ionosphere kwenye Usambazaji wa Mawimbi ya Redio ya Mzunguko wa Juu” (Effects of Ionospheric Density Irregularities on High-Frequency Radio Wave Propagation), unafadhiliwa kupitia programu ya NSF ya Coupling, Energetics, na Dynamics of Atmospheric Regions (CEDAR). Watafiti wanatafuta kuelewa vyema tabia na ugumu wa mawimbi ya redio ya mzunguko wa juu yanayofikia megahertz tatu hadi thelathini. Mawimbi ya redio ya mzunguko wa juu hutumika sana kwa matangazo ya redio ya kimataifa, mawasiliano ya ndege, operesheni za kijeshi, mawasiliano ya redio ya amateur, na dharura. Yanapotumika, mawimbi hupingwa kutoka sehemu ya juu ya angahewa ya Dunia inayojulikana kama ionosphere.

Mawasiliano haya yanaweza kukatizwa na matukio makubwa ya hali ya hewa angani kama vile milipuko ya jua na dhoruba za geomagnetic, ambazo zinaweza kuongeza utoaji wa miale ya ultraviolet na X-ray, na kusababisha vikwazo katika mawasiliano ya masafa ya juu. Kulingana na muhtasari wa mradi, watafiti wanakusudia kupata uelewa kuhusu jinsi hali ya hewa ya anga na kutokamilika kwa ionosphere kunavyoamua tabia ya mawimbi ya redio ya masafa ya juu katika maelezo ambayo hayajawahi kuonekana awali.

Katika utafiti huu wa ushirikiano, Chuo Kikuu cha Andrews kitatoa simulizi kamili ya wimbi ili kuchunguza mawimbi ya juu ya masafa na tabia zao zinazowezekana. Chuo Kikuu cha Johns Hopkins kitatoa na kuzingatia data za setilaiti kuhusu muundo wa wiani katika ionosphere. Chuo Kikuu cha Scranton kitachambua data za mawimbi ya redio ya masafa ya juu yaliyokusanywa na wananchi wajitolea ili kuona mara ngapi mawasiliano yameshindwa au hayakuwa ya kuaminika.

Mradi ulianza mwezi Agosti 2024 na unakadiriwa kumalizika mwezi Julai 2027, ambapo vyuo vikuu vitatu vitawasilisha utafiti wao na hitimisho. Mradi huu wa utafiti wa mawimbi ya redio ya masafa marefu utaendana na mradi mwingine wa ushirikiano ambao Andrews ilipokea ufadhili mapema mwaka huu. Kim anatumai kuongeza angalau mfanyakazi mmoja wa wanafunzi upande wa Andrews wa mradi huo pamoja na yeye mwenyewe na Johnson.

Makala asili ya hadithi hii iliwekwa kwenye tovuti ya habari ya Chuo Kikuu cha Andrews.

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