Critical evaluation Essay Example | Topics and Well Written Essays - 2500 words

Critical evaluation - Essay Example These two research methodologies, quantitative and qualitative, generally polarize along the objective (quantitative) and subjective (qualitative) continuum, yet Park and Ernst's study has aspects of both. They summarize their study as "a systematic review of all randomized controlled trials (RCTs) on the effectiveness of Ayurvedic medicine for RA." Thus, it is qualitative in nature. However, their research design and meticulous literature search are consistent with quantitative studies - structured, repeatable, well documented and theory based. The integrity of a literature study depends on the integrity of trial selection. Biased trial selection can bias the study. The authors took noteworthy precautions to ensure the study's integrity. They found only seven RCTs meeting their inclusion criteria: After their comprehensive search, the authors indicate they identified 33 trials. This is a satisfactory sample size, but their review revealed trials with methodological concerns, particularly non-randomization, observational structures, or lacking controls. Once these trials were excluded, they had a sample size of seven. The seven selected, meeting the strict inclusion criteria, were methodologically sound. They incorporated important tenets of scientific research, being systematic, controlled, and empirical. The authors detailed their team's search strategy including: Electronically searching major databases (Medline, Embase, AMED, Cochrane Controlled Trial Register, and the abstract service of Central Council for Research in Ayurveda and Siddha [CCRAS]) Hand searching 4 relevant Sri Lankan and Indian journals not in the electronic databases Electronically and hand searching the authors' personal files Further, they detailed their keyword selection for the searches and indicated imposing no language restrictions. Documenting that trial selection was predicated upon documented keywords reduced the potential for both overt and covert bias, enhancing objectivity while minimizing subjectivity. Documenting that trial selection was performed scientifically and not according to the authors' personal choices allows the reader to better interpret the information as they see fit, rather than reading a study that reflects the authors' opinions. To further educate readers, Park and Ernst provide a comprehensive paragraph on how they scored and reviewed the articles. In addition to ensuring that each article was reviewed by a person speaking the language of the trial article, they noted that they followed the QUOROM guideline for systematic reviews and used a standardized score (Jadad) for assessing methodological quality. The authors document scientifically why they believed the study of value

Cloud based computing security Essay Example | Topics and Well Written Essays - 2000 words

Cloud based computing security - Essay Example ability) , discusses the security challenges that currently face the enterprise when storing data in its own local severs or deploying it the cloud and introduces available solution for these issues . Security is simply protecting data against improper disclosures, modification or destruction; whether these are intentionally or accidentally caused. That is to say, a complete solution to data security issues should meet three basic requirements: confidentiality, integrity and availability. Confidentiality requires that data should be protected from unauthorized individuals or systems . Integrity refers to an assurance in the accuracy of the data. This means preventing of unauthorized or improper data modification or deletions must be engaged. Availability refers to keeping timely access to data and resources by authorized person. It also refers to the protection from malicious data denials making the system no longer available; or the recovery from hardware and software errors. The importance assigned to these requirements significantly depends on the considered environment. For example, in military environments, most attention devoted to the confidently, while integrity is the mo st relevant aspect of commercial environment. In public institutions, such as hospitals and airline companies and credit institutions in which data correction is essential in addition to the privacy constraints, a combination of integrity and confidentiality are needed. Developments in networking technology and an increase in the need of computing resources have encouraged many enterprises to outsource their storage and computing needs. This new model of computing is commonly referred to as â€Å"cloud computing†. Cloud computing is computing which leverages computer resource through the internet. It is defined by the national institute of standards and technology (NIST) as: â€Å"A model for enabling convenient, on-demand network access to shared pool of configurable computing resource