Suv nafaqat iqtisodiy farovonlik balki, xalqaro xavfsizlik va geosiyosiy barqarorlik masalalarida ham muhim rol o‘ynay boshladi. Shu kungacha suv uchun to‘g‘ridan-to‘g‘ri urushlar qayd etilmagan bo‘lsa-da, davlatlar o‘rtasidagi suv bilan bog‘liq muammolar kelgusida mintaqaviy va xalqaro vaziyatni yanada murakkablashtirishi mumkinligi kuzatilmoqda. Afg‘oniston misolida oladigan bo‘lsak, mamlakat hududida shakllanadigan suv resurslarining taxminan 30 foizigina o‘z ehtiyojlari uchun ishlatilsa, qolgan 70 foizi qo’shni mamalakatlarga oqib o’tadi. Mazkur maqolada Afg‘onistondagi suvdan foydalanish bilan bog‘liq barcha muammoli jihatlar, shuningdek Pokiston va Eron bilan suv resurslarini taqsimlash borasida yuzaga kelayotgan nizolar atroflicha tahlil qilinadi.
This article provides information on the indicators and results of the growth rate of physical qualities, physical fitness , and physiological state and recovery of future physical education teachers during sports training , as well as on the fact that if running and jumping skills, such as long jump or hopping from foot to foot, are well developed, this can also have a positive effect on the result of running .
The study examines the stress–strain state of parallel cylindrical tubes filled with liquid. The problem is solved in a bicylindrical coordinate system under the action of harmonic waves. An analytical solution is obtained in terms of special Bessel and Hankel functions, along with numerical results. A parametric analysis of the dynamic stress coefficient is carried out.
Ushbu maqolada bolalar folklorining kelib chiqishi, rivojlanishi, turli qarashlar ilmiy-nazariy jihatdan tahlil qilinadi. Bollar qoʻshiqlari, aytishuvlar, qadimiy marosimlar hamda oʻyinlarining bolalar tafakkuri va nutqida muhim tutgan oʻrni tahlil qilinadi.