قید
میں سانس تو لے رہا ہوں
مگر کسی کی اجارہ داری میں
یعنی !پر پھیلائے اڑ تو رہا ہوں
مگر گھر کی چار دیوری میں
Intelligence system is considered to be one of the important tools used by military and civil secret agencies to defend and strengthen a nation. Intelligence system is thought to be one of the oldest studies of known history. Intelligence system consists of correct and accurate information, gathered after great struggle and facing difficulties. This department if related to both peace and war. Intelligence is a basis of formulating all military strategies and plans. The importance of intelligence system both in day to day life and as a nation cannot be overemphasized. This article recounts the intelligence systems and management of the resources of secret services of the companions of the Holy Prophet (SAW) and, thereafter, the Muslims rulers. Furthermore, the principles derived from the era of the companions of the Holy Prophet (SAW) regarding intelligence system have also been discussed in this chapter. The guiding principles that are still valid even today includes: (a) Training of Personnel Since espionage helps to strengthen the roots of a state and protect it from its enemies, therefore it requires a team of well trained professionals with latest technology and trends. Islam emphasized on two aspects of early warning, one is professional and the other is ethical.(b) Counter Espionage. An Islamic state must have an effective network of espionage to keep an eye on all the activities of the enemy. This is known as counter espionage. (c) Reconnaissance. This aims at the fore knowledge of the intentions of the enemy so that one can have a better planning in case of an attack. (d) Verification of Information. Information from an agent should be verified from other sources. An operative may feed false information due to lack of experience and competency and that may create an embarrassing situation. (e) Security of Information. Don’t share your secret, try to protect them. If national secrets are compromised they may cause an extensive damage to national interest. (f) Interrogation of POW. Whenever enemy spies or soldiers are arrested in a war they should be interrogated for extraction of information. They may be subjected to mental stress. (g) Fore Warning of the Enemy. This requires the launching of own agents in the enemy ranks for knowledge of their future plan likes attacks. (h)Treatment of Spies. If anyone is found to be guilty of spying for enemy, he may be penalized with death punishment.
Nanofluids have wide range applications in processes involving heat transfer due to their proficient thermal conductivity. Such fluids exhibit substantial viscosity variation with temperature. This dissertation presents oblique stagnation point flow of variable viscosity nanofluid over a stretching surface. Porous medium, magnetic field, heat generation, thermal radiation and homogeneous-heterogeneous effects along with partial slip, thermal slip and convective surface are considered. Micro-rotation phenomenon is also fused with nanofluid flow comprising micropolar nanofluid. Nanofluid thermal conductivity is estimated by Maxwell-Garnett model, Hamilton Crosser thermal conductivity model is also employed when shape effects of nanoparticles are considered. Flow problems are first modeled and afterwards converted to non-linear system of ODEs via appropriate similarity transformations. Numerical solutions are obtained via stable and efficient Runge-Kutta-Fehlberg scheme with shooting quadrature and Keller-Box scheme. The impact of key emerging dimensionless parameters on non-dimensional normal, tangential velocity constituents, temperature, shear stress (at wall), heat flux along with streamlines distribution is visualized by graphs.
