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Topic: Critical variables

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	Clinical Study Design – Critical Issues
		Critical choices facing the clinical investigator in the planning of trials to assess an investigational or approved drug are discussed, and recommendations are given for enhancing the reliability and validity of experiments.
		Another criticism of this study design is that purposely selecting a low dose outside the therapeutic range, or even a dose that is thought to be marginally effective, raises the same ethical concerns as use of a placebo.
		A variation of the cross-over design is the so-called ‘N of one' study (30), wherein a single subject (or a few subjects) undergoes several alternating courses of drug and placebo, preferably under double-blind conditions.
	www.acnp.org /g4/GN401000083/CH082.html (11046 words)

	Nebraska Hospital Association: Critical Access
		A Critical Access Hospital will receive a new type of Medicare payment; in most cases the result will be an increase in Medicare payment.
		Critical Access Hospitals are not restricted from having other levels of service such as long-term care.
		Critical Access Hospitals have less federal restrictions, allowing them to operate more efficiently and in the best interest of patients.
	www.nhanet.org /critical_access/cah_release1.htm (780 words)

	Critical Variables in the Learning Disabilities Identification Process. (Site not responding. Last check: 2007-10-12)
		Critical Variables in the Learning Disabilities Identification Process.
		Forty subjects were classified as learning disabled, and 40 were not identified as handicapped.
		Variables found to correlate most highly with disability classification decision were reading and written language achievement scores.
	www.eric.ed.gov /sitemap/html_0900000b80039a7c.html (84 words)

	Injection Molding Magazine
		The critical dimension for this part is the outside grid length, the distance between two grid marks near each end of the part.
		The critical dimension is the one between the grid marks closest to each end of the part.
		While this shows the effect of short-term process variation, it does not reflect the effects of long-term variation, such as material viscosity changes, check ring wear, and differences in setup from operator to operator.
	www.immnet.com /articles?article=725 (2059 words)

	An Introduction to Chemometrics, by Brian A. Rock, Ph.D.
		Both principal components analysis and factor analysis help to reduce the number of variables which need to be considered in an analysis, and often yield a new set of variables which describes important, but unmeasurable property of the system.
		Perhaps critical assumptions of some of the methods were violated, or the data has flaws that prevent a straightforward solution.
		When critical variables are left out of the data gathering process, the data will not properly describe the system of interest.
	home.neo.rr.com /catbar/chemo/chem_txt.htm (4493 words)

	CTE Tech Report No. 1 * EDC Center for Children and Technology
		In this way, most variables can be held constant while addressing such questions as the structure of the classroom, the role of the teacher, or the activities using a particular technology.
		It is critical to document the nature of the failures and the attempted revisions, as well as the overall results of the experiment, because this information informs the path to success.
		To evaluate these variables, it is necessary to use a variety of evaluation techniques, including standardized pre- and post-tests and ongoing evaluations of the classroom milieu.
	www.edc.org /CCT/ccthome/reports/tr1.html (3291 words)

	World Class Maintenance Strategy Design Techniques
		It is an attempt to capture in condensed, schematic format, all the relevant variables pertaining to a section of, or to the entire maintenance environment, and is essentially holistic by its very nature.
		Further analysis of the model will reveal other, more advanced variables that can be addressed to reduce maintenance costs, but it makes no sense to address them unless the basics are in place first, and you can demonstrate high performance on the basics.
		At the core of the Stage I, and Stage 2 analyses are the qualitative relationships between the variables.
	www.plant-maintenance.com /articles/wcm_strategy_design.shtml (2348 words)

	The Critical Section Problem; Solutions
		The overlapping portion of each process, where the shared variables are being accessed.
		Progress --- a process operating outside of its critical section cannot prevent other processes from entering theirs; processes attempting to enter their critical sections simultaneously must decide which process enters eventually.
		Bounded Waiting --- a process attempting to enter its critical region will be able to do so eventually.
	phoenix.goucher.edu /~kelliher/cs42/sep27.html (515 words)

	Findings from The Scan, Traffic Safety Information Systems International Scan: Strategy Implementation White Paper, ...
		However, because these variables are critical to legal proceedings in which the police are involved, the police are more likely to collect and record accurate data for these variables than for other variables.
		A critical component of this program yet to be implemented is the downstream monitoring of how well the goals are being met, and the subsequent program refinements/modifications to move toward goal attainment in all 50 States.
		The format of certain variables, even those captured on only sample sections, is not conducive to safety use (e.g., horizontal curvature data specifies the length within the sample for certain curve classes, but not the location of the individual curves within the section).
	www.tfhrc.gov /safety/pubs/06099/03.htm (14804 words)

	NEL Frequency Controls, Inc.
		For Mission Critical applications high reliability components must be selected and their interactions must be carefully reviewed.
		To build a reliable application the first challenge is to determine which variables need to be watched for further processing later.
		Critical variables need to be determined and a suitable method for monitoring them must be implemented.
	www.nelfc.com /mdawhitepaper.html (950 words)

	4. INDICATORS, DATA TYPES AND VARIABLES
		Data variables in the initial stage of the enhancement project include the number of individuals at each specified life stage released to the wild, and quantity and type of fertiliser applied to a lake.
		Critical variables concern the behaviour of intermediaries in the distribution chain between harvesting and consumption (excluding processing), as well as the economic contribution of the market sector.
		Critical variables can be grouped as those tied to the level of financial remuneration available from the fishery and those tied to cultural values.
	www.fao.org /DOCREP/003/X2465E/x2465e07.htm (14660 words)

	Working with Variables in Shell Scripts > Working with Variables (Site not responding. Last check: 2007-10-12)
		Scalar variables are often referred to as name-value pairs, because a variable's name and its value can be thought of as a pair.
		It should not be used to define a variable or assign a value to a variable.
		Once a variable is specified as read-only, there is no way to get rid of it or to modify its value; it and its value persist until the shell exits.
	www.samspublishing.com /articles/article.asp?p=29246&rl=1 (1752 words)

	Self Adaptive Routines - Parallel User Functions
		Since the definition of the early range was critical to system performance, variables were used in the system to set the range by time of day, width of the early range, and the proximity of the current price to extreme range when the early range was defined.
		One could always optimize the variables for each contract and make the system look like the best thing around but we all know by now that curve fitting is a quick way to overconfidence and a losing system.
		Critical to the profitable performance of a self adaptive system are the parameters which govern the periodic retesting of the system which immediately resets the system variables.
	www.clayburg.com /omw_breakout.html (2919 words)

	Segmentation: Data Drives Decisions!
		Once switching behavior is understood and the critical variables determined, the CRM mart or database marketing file is adjusted to implement the new models.
		Often, critical variables are not part of a database because they are rare occurrences, such as complaints, or are ad hoc issues such as attitudes about products.
		The way to handle these variables is to determine their relationship to typically collected data, such as demographics and behaviors, which are then used as surrogates in the CRM data mart.
	www.dmreview.com /article_sub.cfm?articleId=5154 (1103 words)

	Stochos Key Variable Identification
		A motor manufacturer identified 5 out of 60 control variables that were related to vibration of the motor.
		A container manufacturer found 2 out of 6 incoming material variables were the major causes of variation in his final product.
		Result: The supplier and the manufacturer worked together to reduce the incoming variation and to reduce the sensitivity of the process to variation of incoming material.
	ourworld.compuserve.com /homepages/stochos/kvi.htm (387 words)

	CIS 307: Threads II
		As you recall, a condition variable is used within a monitor to allow a process to sleep when unable to carry out an intended monitor operation.
		There is a basic difference between the condition variables used with threads and the Hoare-version condition variables seen with monitors.
		In Hoare implementation when a proces performs a signal operation on a condition, if some process was waiting in the condition it is waken up while the signaling process goes to sleep (to be waken up later implicitly when the monitor becomes available).
	www.cis.temple.edu /~ingargio/cis307/readings/threads2.html (1170 words)

	Geographic variation in the breeding biology of
		“Critical Variables in Successful Nesting Habits of Sialia sialis” is the result of a five-year study on the nesting habits of Eastern Bluebirds in Ward Pound Ridge Reservation in Westchester County, New York.
		Studying these variables may allow ornithologists to create ideal conditions for the Eastern Bluebird to nest in, therefore achieving a greater nesting success for a breeding pair of Eastern Bluebirds.
		Previous studies of the nesting habits of cavity-nesting birds have suggested that there are significant factors that affect nesting and reproductive success.
	www.watson.ibm.com /leo/ScienceResearch/jjhs/Hefferon2001.htm (2022 words)

	Quality Services (Site not responding. Last check: 2007-10-12)
		In most cases, 1 or 2 variables are critical to the quality of the services your organization delivers.
		We utilize statistical tools to determine the critical inputs and assist you as you develop the improvements needed to increase performance and meet customer requirements.
		We have the capability to perform designed experiments with key variables to determine the level of improvement prior to implementation.
	webpages.charter.net /statorgsvs/qualityservices.htm (255 words)

	Dr. McCarthy's Research Methods Notes
		Variables are the things/events that the research investigation measures
		The major types of research methods vary in terms of the experimenter's control over relevant variables, and the naturalness of the setting.
		These differences have a direct bearing on critical issues, such what sorts of conclusions we can make from the findings, and how confident we are of the validity of those conclusions.
	www.mtsu.edu /~pmccarth/io_meth2.htm (1153 words)

	critcrim.org
		And even though the ways of seeing difference or of approaching class, race, and gender vary, there is certainly an emerging consensus on the importance of these three variables, and increasingly, on the intersections between them or on their interactive or reciprocal relationships.
		Unlike quantitative studies in crime and criminal justice, time and place studies are not engaged in the perennial pursuit of a fine-tuned measure of real crime, nor are they as reluctant to reach "definitive" conclusions regarding the relationships among class, race, gender, and crime.
		We also share their critical view that crime, justice, and crime control cannot be separated from the totality of the ordered, structural, and cultural contexts of their productivity.
	www.critcrim.org /critpapers/barak.htm (6255 words)

	Chapter 13 - Hypothesis Testing
		A chi-square contingency test of independence between two variables is always a one- tailed test.
		If one of the two variables has a many missing values, the two-way table may be misleading.
		Critical variables excluded from the table may be masking a relationship that really does exist.
	www-rohan.sdsu.edu /~renglish/470/notes/chapt13/chapter13.htm (1307 words)

	TCLBridge Documentation (Environment Variables)
		This variable is critical to the operation of both Tcl/Tk and TCLBridge.
		If this variable is specified, it must contain either a valid file name or a valid full path and file name for the Tcl dynamic link library to load during initialization.
		If this variable is specified, it must contain either a valid file name or a valid full path and file name for the Tk dynamic link library to load during initialization.
	www.tclbridge.com /html/Environment.html (449 words)

	roediger01b
		Results of the simultaneous multiple-regression analysis indicated that BAS, (the strength of the connection from the list items to the critical word), and veridical recall (the average probability of recall for the items in the list) accounted for about 84% of the explainable variance in false recall.
		They then discussed the implications of their results for various theories postulated to explain the false recall and recognition effects.
		Two multiple regression analyses were conducted in which the seven independent variables were entered simultaneously to predict either probability of false recall, or probability of false recognition.
	www.uark.edu /misc/lampinen/read/roediger01b.htm (363 words)

	Plasma Arc Cutting - Cut Quality Problems \| Centricut Training Articles (Site not responding. Last check: 2007-10-12)
		It is also affected by material variables such as thickness and type of material, grade, chemical composition, surface condition, flatness, and even temperature changes in the material as it is cut.
		However, the three most critical variables to consider in dross formation are cutting speed, amperage, and standoff distance.
		The window varies with plasma gas used: For example, nitrogen and air plasma gasses have a relatively narrow dross free window on carbon steels while oxygen plasma has a wider dross free window.
	www.centricut.com /TA_CutQualityProblems.htm (1141 words)

	Risk Management of Sexually Abusive Youth in Massachusetts, 1998-2004
		Variables include referral and placement history, demographic characteristics, critical antecedent childhood life experiences, familial/parental characteristics, presenting behavioral problems including detailed coding of sexually normative, deviant (paraphillic), inappropriate and coercive behaviors, and psychological and/or emotional symptoms.
		Variables are also provided regarding psychological measures such as Intelligence Quotient (IQ), the presence of learning disabilities, and numerous psychological disorders such as Post-Traumatic Stress Disorder (PTSD), Attention Deficit-Hyperactivity Disorder (ADHD), and anxiety, among others.
		Specific variables in regards to the current sexually coercive behavior are also present such as the specific type of acts engaged in, and whether or not the acts were with agemates, and if they were nonforced or forced.
	webapp.icpsr.umich.edu /cocoon/ICPSR-STUDY/04308.xml (1274 words)

	Analysing Data
		This, in turn, means that the odds of seeing the effect of the known critical variables in relation to the other process variables is also highly improbable..
		If the changes in the critical variables aren't independent of one another you cannot use the data to identify their effects on the process (we are, of course, assuming that #1 doesn't apply).
		The data is happenstance data - This means any unknown, uncontrolled critical variable will not only not be recorded but it could very likely have changed as the same time and in the same manner as one or more of the variables whose values were recorded and whose impact is of no consequence.
	www.isixsigma.com /forum/showthread.asp?messageID=95541 (646 words)

	Flash MX 2004 -- Using the Watch list (Site not responding. Last check: 2007-10-12)
		To monitor a set of critical variables in a manageable way, you can mark variables to appear in the Watch list.
		If you add a local variable to the Watch list, its value appears only when Flash Player is stopped at a line of ActionScript where that variable is in scope.
		Click on _level0 and the variables tab and you'll see all your variables that are in scope at that level.
	livedocs.macromedia.com /flash/mx2004/main_7_2/00000933.html (627 words)

	Women's Sports Foundation Participation
		Since most sports involve overcoming the resistance of a mass or propelling a mass through space, strength and muscle mass are critical variables with regard to designing fair competitions.
		When you look at all of these variables, it is possible to envision a fair competition between skilled men and women in boxing if the women has a longer levers and a higher than average amount of muscle mass.
		As long as competing athletes are matched by ability, muscle mass and other standardized physical variables critical to success in the sport, competition between males and females should be permitted.
	www.womenssportsfoundation.org /cgi-bin/iowa/issues/part/article.html?record=775 (359 words)

	PR and ROI: A Critical Crossroads » The Bivings Report
		MMM is only as good as the variables included in the model: so-called ’specification’ errors can produce highly accurate, but misleading results.
		MMM has difficulty accounting for intervening variables; that is, something that is not in the model equation that is affecting a variable that is in the model, which produces biased results.
		MMM usually requires an extensive collection of historical data and an integrated data set that is often quite expensive to build, particularly if critical variables have not been measured yet.
	www.bivingsreport.com /2006/pr-and-roi-a-critical-crossroads (965 words)

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