OBSERVATION VERSUS EXPERIMENTATION
نویسندگان
چکیده
منابع مشابه
From observation to experimentation: leptin action in the mediobasal hypothalamus.
The burgeoning obesity epidemic has fueled the drive to describe, mechanistically, metabolic homeostasis. From the early theories implicating glucose as a principal modulator grew an understanding of a complex array of metabolic signals, sensed by peripheral organs along with specific locations within the central nervous system (CNS). The discovery that leptin, an adipose-derived hormone, acts ...
متن کاملClimate warming drives local extinction: Evidence from observation and experimentation
Despite increasing concern about elevated extinction risk as global temperatures rise, it is difficult to confirm causal links between climate change and extinction. By coupling 25 years of in situ climate manipulation with experimental seed introductions and both historical and current plant surveys, we identify causal, mechanistic links between climate change and the local extinction of a wid...
متن کاملEntity versus Rhetorical Coherence for Information Ordering: Initial Experimentation
This paper investigates whether the model of local rhetorical coherence suggested in Knott et al. (2001) can boost the performance of the Centering-based metrics of entity coherence employed by Karamanis et al. (2004) for the task of information ordering. Our results indicate that (a) the simplest metric continues to perform better than its competitors even when local rhetorical coherence is ta...
متن کاملLaparoscopic cholecystectomy: day-care versus clinical observation.
OBJECTIVE To determine the feasibility and desirability of laparoscopic cholecystectomy (LC) in day-care versus LC with clinical observation. SUMMARY BACKGROUND DATA Laparoscopic cholecystectomy has been performed regularly as outpatient surgery in patients with uncomplicated gallstone disease in the United States, but this has not been generally accepted in Europe. The main objections are th...
متن کاملExploratory Experimentation and Computation 1. Exploratory Experimentation
I believe our research community is facing a great challenge to re-evaluate the role of proof in light of the growing power of current computer systems, of modern mathematical computing packages, and of the growing capacity to data-mine on the Internet. Add to that the enormous complexity of many modern capstone results such as the Poincaré conjecture, Fermat's last theorem, and the Classificat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 1922
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.55.1411.29