Practical limitations of epidemiologic methods.

Practical limitations of epidemiologic methods.

Epidemiologic methods can be categorized into demographic studies of mortality and morbidity and observational studies that are either retrospective or prospective. Some of the limitations of demographic studies are illustrated by a review of one specific mortality study showing possible relationship of nuclear fallout to leukemia. Problems of accuracy of diagnosis or causes of death on death c...

Epidemiologic Methods

During the past several years there has been a growing interest in epidemiologic investigation, particularly in the field of non-infectious diseases. Although a few books devoted to epidemiology are available, for the most part the subject has been presented in public health and preventive medicine textbooks, in which methodology has often taken second place to a descriptive epidemiology of spe...

Application of Numerical Methods in the Analysis of Mat Foundations and Limitations of Classical Methods

Limitations of Practical Quantum Cryptography

As we all know that the quantum cryptography is having lots of consideration in present time for security but it’s important to note that implementation of algorithms using QC is not viable if one wants to have the security intact. It can only be used to share keys using Quantum Key Distribution (QKD). Distribution of keys is just a part of securing information. Proper encryption and decryption...

Limitations on practical quantum cryptography

We provide limits to practical quantum key distribution, taking into account channel losses, a realistic detection process, and imperfections in the "qubits" sent from the sender to the receiver. As we show, even quantum key distribution with perfect qubits might not be achievable over long distances when the other imperfections are taken into account. Furthermore, existing experimental schemes...