Goal definition other models

An inventory analysis compiles the flows of materials and energy into and out of the system. Necessary work consists of construction of a flow model, data collection, and calculation of results. In other words, the phase of life-cycle inventory (LCI) provides the systems model of the technical system ( product system ) under study, complying with the goal and scope definition. This model consists of certain elements, which in terminology of the ISO standards are the following ... 

Environmental criteria have been established for many of these, but the utility and applicability of such criteria for indoor environments is controversial for at least four reasons. Eor example, the goals of the threshold limit values often do not include preventing irritation, a primary concern in indoor environments with requirements for close eye work at video display terminals. For most of the pollutant categories, the problem of interactions, commonly termed the multiple contaminants problem , remains inadequately defined. Even for agents that are thought to affect the same receptor, such as aldehydes, alcohols, and ketones, no prediction models are well established. Finally, the definition of representative compounds for measurement is unclear. That is, pollutants must be measurable, but complex mixtures vary in their composition. It is unclear whether the chronic residual odor annoyance from environmental tobacco smoke correlates better with nicotine, particulates, carbon monoxide, or other pollutants. The measure total volatile organic compounds is meanwhile... 

The second definition of ethics relates to conduct— modelers should conform to professional standards of conduct. Obviously one code of conduct to which modelers should conform to are the norms related to responsibilities becoming a scientist. All scientists have a duty to ensure their work serves desirable ends (Shrader-Frechette, 1994). Hence, as a scientist one must strive to not harm the public, research subjects, democratic institutions, and the environment. To those ends, the foremost ethical goal in science is to not deceive, inveigle, or obfuscate the results of our research nor should others be allowed to do so. In other words, scientists must not commit fraud and neither should others be allowed to use our research to commit fraud. 

---