5,781 research outputs found
Treatment of Chemical Dependency May Reduce Medical Utilization and Costs
Summarizes a study of the impact of chemical dependency treatment on the costs and utilization of medical services -- hospital days, emergency department visits, and outpatient visits. Points to lack of insurance as a barrier to treatment
Alien Registration- Lawrence, Walter W. (Mars Hill, Aroostook County)
https://digitalmaine.com/alien_docs/33905/thumbnail.jp
Sensitivity of C-Band Polarimetric Radar-Based Drop Size Distribution Measurements to Maximum Diameter Assumptions
The estimation of rain drop size distribution (DSD) parameters from polarimetric radar observations is accomplished by first establishing a relationship between differential reflectivity (Z(sub dr)) and the central tendency of the rain DSD such as the median volume diameter (D0). Since Z(sub dr) does not provide a direct measurement of DSD central tendency, the relationship is typically derived empirically from rain drop and radar scattering models (e.g., D0 = F[Z (sub dr)] ). Past studies have explored the general sensitivity of these models to temperature, radar wavelength, the drop shape vs. size relation, and DSD variability. Much progress has been made in recent years in measuring the drop shape and DSD variability using surface-based disdrometers, such as the 2D Video disdrometer (2DVD), and documenting their impact on polarimetric radar techniques. In addition to measuring drop shape, another advantage of the 2DVD over earlier impact type disdrometers is its ability to resolve drop diameters in excess of 5 mm. Despite this improvement, the sampling limitations of a disdrometer, including the 2DVD, make it very difficult to adequately measure the maximum drop diameter (D(sub max)) present in a typical radar resolution volume. As a result, D(sub max) must still be assumed in the drop and radar models from which D0 = F[Z(sub dr)] is derived. Since scattering resonance at C-band wavelengths begins to occur in drop diameters larger than about 5 mm, modeled C-band radar parameters, particularly Z(sub dr), can be sensitive to D(sub max) assumptions. In past C-band radar studies, a variety of D(sub max) assumptions have been made, including the actual disdrometer estimate of D(sub max) during a typical sampling period (e.g., 1-3 minutes), D(sub max) = C (where C is constant at values from 5 to 8 mm), and D(sub max) = M*D0 (where the constant multiple, M, is fixed at values ranging from 2.5 to 3.5). The overall objective of this NASA Global Precipitation Measurement Mission (GPM/PMM Science Team)-funded study is to document the sensitivity of DSD measurements, including estimates of D0, from C-band Z(sub dr) and reflectivity to this range of D(sub max) assumptions. For this study, GPM Ground Validation 2DVD's were operated under the scanning domain of the UAHuntsville ARMOR C-band dual-polarimetric radar. Approximately 7500 minutes of DSD data were collected and processed to create gamma size distribution parameters using a truncated method of moments approach. After creating the gamma parameter datasets the DSD's were then used as input to a T-matrix model for computation of polarimetric radar moments at C-band. All necessary model parameterizations, such as temperature, drop shape, and drop fall mode, were fixed at typically accepted values while the D(sub max) assumption was allowed to vary in sensitivity tests. By hypothesizing a DSD model with D(sub max) (fit) from which the empirical fit to D0 = F[Z(sub dr)] was derived via non-linear least squares regression and a separate reference DSD model with D(sub max) (truth), bias and standard error in D0 retrievals were estimated in the presence of Z(sub dr) measurement error and hypothesized mismatch in D(sub max) assumptions. Although the normalized standard error for D0 = F[Z(sub dr)r] can increase slightly (as much as from 11% to 16% for all 7500 DSDs) when the D(sub max) (fit) does not match D(sub max) (truth), the primary impact of uncertainty in D(sub max) is a potential increase in normalized bias error in D0 (from 0% to as much as 10% over all 7500 DSDs, depending on the extent of the mismatch between D(sub max) (fit) and D(sub max) (truth)). For DSDs characterized by large Z(sub dr) (Z(sub dr) > 1.5 to 2.0 dB), the normalized bias error for D0 estimation at C-band is sometimes unacceptably large (> 10%), again depending on the extent of the hypothesized D(sub max) mismatch. Modeled errors in D0 retrievals from Z(sub dr) at C-band are demonstrated in detail and comparedo similar modeled retrieval errors at S-band and X-band where the sensitivity to D(sub max) is expected to be less. The impact of D(sub max) assumptions to the retrieval of other DSD parameters such as Nw, the liquid water content normalized intercept parameter, are also explored. Likely implications for DSD retrievals using C-band polarimetric radar for GPM are assessed by considering current community knowledge regarding D(sub max) and quantifying the statistical distribution of Z(sub dr) from ARMOR over a large variety of meteorological conditions. Based on these results and the prevalence of C-band polarimetric radars worldwide, a call for more emphasis on constraining our observational estimate of D(sub max) within a typical radar resolution volume is mad
Out of Sync: New Temporary Worker Proposals Unlikely to Meet U.S. Labor Needs
A key component of the immigration reform bill now being debated in Congress is a new temporary worker program that, ostensibly, would replace the current stream of undocumented migration with a regulated flow of less-skilled immigrant workers. However, growing long-term labor shortages in key industries dependent on less-skilled labor require the recruitment and training of permanent entry-level workers, both native-born and foreign-born, to fill a wide range of occupations. Yet the larger immigration reform bill provides for only a small increase in the overall level of permanent immigration, and the vast majority of this increase is not geared to the growing demand for less-skilled labor. In addition, the temporary worker provisions of the legislation, as they now stand, do not provide a path to permanent residence for any new temporary workers, and set a cap on the admission of temporary workers that falls well below current labor demand. As a result, neither industry nor workers have incentives to invest in each other to maximize the economic benefits of a temporary worker program. An alternative program that allows workers to apply for permanent status would better address industry's need for a larger and more settled less-skilled workforce and would more likely discourage undocumented immigration in the future
The Ursinus Weekly, April 15, 1957
YWCA, WSGA, WAA vote to be held Tuesday April 16 • Circulate petitions for rep. to MSGA; Council meets • Chi Alpha elects officers; Dr. Jones speaks to society • Dr. Pancoast honored; Will attend conference • Dr. Miller to visit Hawaii; Will teach at university • Senate receives women\u27s petition for rules revision • H. Lloyd Jones appointed assistant admissions director • Inter-frat council plans dance and picnic Apr. 26, 27 • Dr. Obold gives lectures on Middle East problems • Sabrina fair now in rehearsal; Will be presented May 10 and 11 • Val Spencer junior prom queen; Cub & Key members named • Two one-act plays to be given Apr. 16 • Trinity choir to present Olivet to Calvary, Wed. • Stapleford - Hause engagement • Editorial: It\u27s your responsibility! • Letters to the editor • Fools rush in • This matter of rules • Mermaids finish successful season • Belles lacrosse win 2 out of 3 • Bears take Delaware Blue Hens; Dragons beat Ursinus in opener • Fords defeat Bears; One record falls • Zeta Chi fraternity wins track meet • USMC procurement officer to visit campus, April 17https://digitalcommons.ursinus.edu/weekly/1426/thumbnail.jp
Applied Dynamics In School And Practice
Mechanical engineering, mechanical engineering technology, and related educational programs are not addressing in a sufficient way the principles associated with applying analytical investigations in solving actual engineering problems. Because of this, graduates do not have the adequate skills required to use the methods of applied dynamics in the process of analyzing mechanical systems. These methods allow one to obtain an understanding of the role of the parameters of a system and to carry out a purposeful control of the values of these parameters with the goal to achieve the desired performance. Engineering and engineering technology programs pay very little attention to addressing these steps. It should be stressed that these programs do not offer a universal straightforward methodology of solving linear differential equations of motion that allow revealing all important interrelationships between the aspects of the engineering problem.
It is difficult to formulate the reasons why there is such a low interest in applying the analytical approach in order to reveal the interrelationships between decisive aspects of the operational process of an engineering system in order to achieve the desired goal. Actually, there is almost a complete silence with regard to this issue. Hence, we assume that the first reason could be that there is no recognition of the existence of such a problem. In other words, there is no need to apply these analytical methods since these methods are not beneficial. We do not believe that the engineering community supports this reason. It is not a matter of demonstrating factual data that show how many times the theory was helpful. Without the support of the theory we cannot justifiably evaluate the results of our solutions. If we agree that there is problem, then why are there no publications that would stimulate discussions leading toward a solution of the problem?
Here is the second reason. Until now, engineering programs do not present the straightforward universal theoretically sound methodologies for solving the second order linear differential equations that are vital for mechanical and electrical engineering. Without any suggestions of how to solve this problem, it did not make much sense to begin a discussion. In our opinion, this is why we have silence with the regard to this problem.
However, it is well known that Laplace Transforms allow solving any linear differential equation of motion. It is justifiable to assume that the main reason why the Laplace Transform methodology is not adopted by learning environments consists in the absence of the majority of tables of Laplace Transform Pairs that are needed for solving differential equations of motion as well as differential equations describing electrical circuits. However, the situation is changed. Current publications comprise the adequate tables that are needed for solving linear differential equations of motion associated with all common mechanical engineering problems.
Practicing engineers and students need assistance in acquiring the knowledge of composing differential equations of motion. They need certain training in solving these equations using Laplace Transform methodology. Several recommendations are proposed on how to expedite the implementation in academia and in industry of the methods of applied dynamics in solving common mechanical engineering problems
COMPLIANCE TO ENVIRONMENTAL IMPACT ASSESSMENT REGULATIONS BY A GOLD MINING COMPANY IN ZAKA DISTRICT, ZIMBABWE - A TRAVESTY OR TRIBUTE TO ENVIRONMENTAL DEMOCRACY AND JUSTICE
Zimbabwe’s Environmental Management Act has provisions promoting the conduct of environmental impact assessment (EIA) prior to project implementation to protect the environment and environmental rights. Using data collection methods inspired by phenomenological study, this paper discusses if EIA processes by a gold mining company had mainstreamed or marooned ‘access rights’ which are the cornerstone of environmental democracy. While the Zimbabwe’s EIA policy is applauded for covertly mainstreaming environmental democracy, research findings suggest that there exist gaps in the policy framework, policy and practice in promoting comprehensive environmental democracy. EIA processes are done to fulfil legal obligations but with little motivation to protect community interests as participation is symbolic. It is recommended to redesign EIA policy and embed broader attributes of environmental democracy such as locals’ participation in all EIA stages and inclusion of experts on community issues in the EIA review panel to promote fairness, inclusivity, transparency during EIA.
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