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This article begins with four situations, the first three of which are common to many businesspeople and persons in the United States today and the fourth, unfortunately, is growing: Setting the minimum level at which workers are paid; going bankrupt to avoid paying for credit card purchases, claiming a questionable deduction in calculating one's federal income tax liability, and violating the law in every state by a major U.S. corporation.

The matter of salary levels and professional advancement is much discussed and debated today in business and academe. This paper examines the matter of salary determinants for law professors in colleges of management in the U.S. with an emphasis on examining how gender might affect professorial salary and rank. By focusing on one discipline in today's academe and in a college having great student demand (management) coupled with a professed commitment to women's rights and by holding constant variables relevant to salary and rank, this study, addresses the matter of whether gender is a factor in determination of academic rank and salary. This study used correlation and path analysis in arriving at our conclusions. Our sample size meets statistically acceptable parameters. Our results corroborate earlier research which finds significant pay differences between women and men, but they show that at least for the sample of legal studies professors in this study, these pay differences are attributable to the number of years spent in academe. If women have only recently enjoyed opportunities for careers in this discipline, they do not have as much seniority, on average as men. Consequently, if universities pay salaries at least partly according to seniority, women's salaries are likely to be lower than men's salaries, as our study indicates. At the same time, however, even after controlling for seniority and other factors that might affect rank, there are still significantly fewer women in the higher ranks. These results point to the operation of a “glass ceiling” which restricts promotional opportunities for women in other fields.

As the amount of positive law increases, our businesses and society both gain and lose. ~ . _ ~ he number of I businesspersons, political leaders, TV ministers, sports personalities, educators, and other role models for American society who in recent years have . been fined, imprisoned, left private or public office in disgrace, or been denied Olympic medals startles many. Others not only are alarmed by the rash of apparently unethical conduct by society's leaders, but also wonder if there is some character flaw in the present generation of achievers that dooms their ultimate success and threatens the commitment of the average member of society to the ethics of work and integrity. It is not unusual to read of self-studies by leading business firms that question the propriety of basic organizational values and ask hard questions about the institution. Certainly it makes institutions such as businesses and governments appear ridiculous to line personnel, who are micro-managed to death by institutional guidelines covering the minutest aspects of their work yet see leaders who appear to violate laws governing major phases of their business. This article advances the notion that the "law on the books"-pos i t ive law has become the basic ethic of our business and social culture today. That is, people have come to accept the notion that if they have followed the law on the books in a democratic society, that is probably all that society can and should expect of them. This is the ethic of legal positivism. The remainder of this article is devoted to exploring why positive law has assumed such a dominant ethical position in the United States, examining some situations supporting the thesis that positive law is our basic ethic, discussing possible problems with this notion, and evaluating the likelihood that this ethic will prove long-lasting.

Cloud-to-ground (CG) lightning strike data on the NASA F-106B research aircraft obtained during the 1984-86 storm seasons in the vicinity of Wallops Island, Virginia, are analyzed. The results suggest that CG strikes may represent a significant portion of the total number of lightning strikes encountered by the aircraft at altitudes below 6 km. It is unlikely that an aircraft encounters the first return stroke of the CG flash. The current values of the CG strikes are not different from currents in other types of strikes.

The NASA Langley Research Center is developing a set of Transport Research Facilities which will support a simulation-to-flight process that will improve the efficiency of conducting experiments from concept development, to ground-based simulation testing, to flight testing. A key facility is a modified B-757-200 airplane containing an onboard research system. This aircraft is replacing the existing NASA B-737-100 Transport Systems Research Vehicle. The other Transport Research Facilities include two simulator cabs, a Research System Integration Laboratory, and the associated software. These facilities will support research flight operations associated with the present and future air traffic control environments.

This paper describes the results of current research being carried out at McDonnell Douglas Aerospace (MDA) to develop a flight-ready vibration isolation system for possible use on shuttle or space station. Measurements and predictions indicate that the natural vibration modes of these vehicles may be excited by on-board equipment and astronaut activities. These disturbances may be enough to upset the desired levels of microgravity. The MDA system consists of a very low frequency, flexible interface between a scientific payload and the orbiting host platform augmented by active acceleration feedback. The design of a system that will accommodate materials and biological experiments must take into account predicted input vibration levels, experiment services requirements, and logistic considerations. It must accommodate all these requirements while consuming the absolute minimum of the space available to the payload itself. The MDA isolator concept has been demonstrated in 3-axis testing in the laboratory and nearly meets the desired space station specifications. However, the design needs on-orbit testing to verify its performance in true space environment. This paper discusses some of the practical aspects of the design and operation of the system. NASA has notified MDA that a Phase A award for the development of a flight demonstration of our experiment will be made under its IN-Space Technology Experiment Program (IN-STEP).© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

A NASA Langley Research Center Learjet 28 research airplane was flown in various adverse weather conditions in the vicinity of the NASA Kennedy Space Center from 1990-1992 to measure airborne electric fields during the Joint NASA/USAF Airborne Field Mill Program. The objective of this program was to characterize the electrical activity in various weather phenomena common to the NASA-Kennedy area in order to refine Launch Commit Criteria for natural and triggered lightning. The purpose of the program was to safely relax the existing launch commit criteria, thereby increasing launch availability and reducing the chance for weather holds and delays. This paper discusses the operational conduct of the flight test, including environmental/safety considerations, aircraft instrumentation and modification, test limitations, flight procedures, and the procedures and responsibilities of the personnel in the ground station. Airborne field mill data were collected for all the Launch Commit Criteria during two summer and two winter deployments. These data are now being analyzed.

An analysis of electromagnetic waveform records and video images of a multistroke cloud-to-ground (CG) strike to the NASA F-106B instrumented airplane is presented. The CG flash started as a lightning strike triggered by the airplane and later produced multiple return strokes to the ground (the ground strike network registered six return strokes). Although there are some uncertainties in data interpretation resulting from lack of independent measurements with other than the airborne instruments, recoil streamers and eight sequences of dart leaders followed by return strokes (two more than were indicated by the ground network) were identified in the airborne data. At least three of the subsequent return strokes were attached to the airplane. The analysis provides evidence that formation of recoil streamers and dart leaders is accompanied by a surge in continuous current. This feature is similar to that observed in the bidirectional leader development during lightning initiation on the airplane.

Ninety-one patients with documented invasive infections due to an Aspergillus species were identified at Memorial Sloan-Kettering Cancer Center from July 1, 1971, through December 31, 1976. Of the 29 patients in whom the diagnosis was made during life, 10 had successful treatment and survived the Aspergillus infection by two to 17 months. An immunodiffusion test was useful in the early diagnosis of invasive aspergillosis, and in 11 patients in whom the diagnosis was supported by seroconversion and who underwent treatment, the survival rate was 64 percent. Cultures of respiratory secretions were not reliable because they often reflected only colonization. In one year, only 9 percent of the patients with Aspergillus species isolated from the sputum had an invasive infection. The lung was the commonest site of involvement, 91 percent of the patients having pulmonary lesions. The most frequently affected extrapulmonary organ was the brain (18.3 percent). Eight patients had nonpulmonary aspergillosis as the only manifestation of this infection. Most of the 91 patients had hematologic neoplasms as the underlying disease, and neutropenia and antibacterial therapy preceded the diagnosis of aspergillosis in the majority of cases.

Sheep red cells treated with concanavalin A and sensitized with a partially purified aspergillus antigen were used to detect antibody to Aspergillus by passive hemagglutination (PHA). Sera from eight patients with aspergillomas or allergic aspergillosis had PHA titers of > 1:800 and antibody detectable by immunodiffusion (ID). Of 122 hospitalized cancer patients without invasive aspergillosis, 118 had titers of

The analysis of radar echoes from lightning at the moments of strikes to the NASA Langley Research Center's F-106B instrumented airplane proves that the airplane itself triggers the lightning, rather than intercepting naturally occurring flashes. In 1982 the UHF band radar at the NASA Goddard Space Flight Center/Wallops Flight Facility was used to guide the F 106B through the upper regions of thunderstorms so that the airplane might be struck by lightning. The UHF band radar data was analyzed to determine the nature and characteristics of direct lightning strikes to the airplane, and the airborne data was used to document the environmental con ditions favorable for such strikes The echo characteristics of the strikes were similar to those of intracloud flashes, and indicated that most of the time the airplane was part of the lighting channel. The probability of a direct strike to the F-106B during storm penetrations (PDS) is defined here as the ratio of the number of direct strikes to the airplane to the total number of flashes occurring in the radar resolution volume containing the airplane Correlations between the PDS and the intensity of rain, the intensity of turbulence, the ambient temperature, and the lightning flash rate in the storms penetrated were obtained The correlations indicated that the highest risk for the F-106B to be struck by lightning during penetrations in the upper regions of thun derstorms occurred under the following conditions: 1) ambient temperatures of -40 C and colder; 2) negligible to light precipitation; 3) negligible to light turbulence; and 4) lightning flash rates of < 10 per minute

On February 24, 1987, a NASA T-38A airplane experienced a lightning strike while approaching the Los Alamitos Army Aviation Facility in California. The airplane was landed safely at Los Alamitos with no injury to the crew members. However, the airplane suffered extensive fire damage in the center fuselage section. The NASA investigation board concluded that the airplane was struck by lightning, which resulted in an inflight explosion with subsequent fire. This paper describes the most probable cause of the incident, and the implications of this mishap to aircraft lightning protection and to the avoidance of those conditions conducive to lightning strikes to aircraft.

The NASA-Langley Storm Hazards Program has given attention to the effects of severe in-flight weather environments on composite structures, using an instrumented F-106B in storm penetration experiments. The vertical fin cap was chosen for the study of lightning strike attachments on composite structures of four different types: (1) glass/epoxy with flame-sprayed aluminum; (2) Kevlar/epoxy with aluminized glass cloth; (3) graphite-epoxy without lightning protection; and (4) unprotected graphite-epoxy with electrical isolation from the rest of the aircraft structure. Flight test results are evaluated.

One hundred twenty-nine patients with bacterial endocarditis were evaluated in a multicenter collaborative study to determine whether a standardized serum bactericidal test could predict the outcome of the infection. All centers used a microdilution test method that defined all known test variables, including inoculum size, culture medium, dilution technique, incubation time, method of subculture, and bactericidal endpoint. Peak serum bactericidal titers of 1:64 or more and trough serum bactericidal titers of 1:32 or more predicted bacteriologic cure In all patients. The traditionally recommended serum bactericidal titer of 1:8 had statistically significant predictive accuracy at trough antibiotic levels only. The serum bactericidal test was a poor predictor of bacteriologic failure and ultimate clinical outcome, which depends on many factors. Wider recognition by physicians and clinical microbiologists that this In vitro test of antimicrobial activity can accurately predict bacteriologic success but cannot accurately predict either bacteriologic failure or clinical outcome could lead to a better consensus about its appropriate use. On the basis of the results of this study, peak serum bactericidal titers of 1:64 or more and trough serum bactericidal titers of 1:32 or more are recommended to provide optimal medical therapy for infective endocarditis.

The development of relatively inexpensive, highly sophisticated avionics systems makes it now possible for general aviation aircraft to fly under more severe weather conditions than formerly. Increased instrument flying increases exposure of aircraft to potentially severe thunderstorm activity such as high rain rates, hail stones, and lightning strikes. In particular, the effects of lightning on aircraft can be catastrophic. Interest in aircraft lightning protection has been stimulated by the introduction of advanced composites as an aircraft structural material. The present investigation has the objective to report experiences with three composite components which have flown in thunderstorms, taking into account three F-106B composite fin caps. The only visible lightning strike damage to a flame sprayed aluminum coated glass/epoxy fin cap was a small area of the aluminum which was burned. Visible lightning strike damage to a Kevlar/epoxy fin cap was limited to the exterior ply of aluminum coated glass fabric. In the case of a graphite/epoxy fin cap, lightning currents could be conducted.

A propeller-type trailing airspeed anemometer system is described for low airspeed (M not exceeding 0.2) calibration which has improved accuracy and is easy to implement as compared to most methods currently in use. The trailing anemometer system consists of the trailing anemometer itself, a deployment mechanism, and an operator's control box. The trailing anemometer is a small low-drag brass body provided with tail fins for self-alignment with the airstream. The rotational speed of a small six-bladed low-inertia propeller is sensed with a miniature self-generating tachometer inside the anemometer. A very satisfactory airspeed calibration can be made with this device in which true airspeed can be measured to within 1 knot. Results from flight calibration of an aircraft and trail-back characteristics of the anemometer and cable are included. The operating speed range of the designed cable-anemometer combination is 7 to 165 knots.

The emergence of acute interstitial pneumonia in immunocompromised patients is a serious, often life-threatening event.1 A treatable cause of this syndrome is the yeast Cryptococcus neoformans. Although definitive diagnosis of invasive pulmonary infection by this organism rests on its demonstration in lung tissue,2 thrombocytopenia in heavily immunosuppressed patients may preclude biopsy procedures. Immunologic demonstration of cryptococcal polysaccharide capsular antigen in serum, by latex agglutination, is simple, rapid and conclusive proof of cryptococcosis, when the test is positive3 and when concurrent control assays for rheumatoid factors are done.4 In addition, in studies of serum and cerebrospinal fluid of 30 patients . . .

This paper describes an integrated system for providing ground-based cockpit display, transmitting to an aircraft, upon request via VHF radio, important ground-based thunderstorm data such as radar precipitation reflectivity contours, aircraft ground track, and cloud-to-ground lightning locations. Examples of the airborne X-band weather radar display and the ground-based display are presented for two different missions during the NASA Storm Hazards Program. In spite of some limitation, the system was found to be helpful in the selection of the route of flight, the general ground track to be used, and, occasionally, in clarifying the location of a specific cell of interest.

Acid production by certain yeast species through the fermentation of glucose was used as the basis of an in vitro test for measuring susceptibility of these organisms to 5-fluorocytosine. Serial dilutions of 5-fluorocytosine in yeast nitrogen base broth, with bromothymol blue indicator dye, were made on microtiter plates. A fixed-concentration suspension of yeast cells was added to successive wells of the plates, and the color change from blue to yellow, indicating generation of acid, was noted. Eighteen hours after inoculation the lowest concentration of 5-fluorocytosine that completely inhibited the production of acid was recorded as the minimum inhibitory concentration. The results were reproducible in multiple trials with organisms of the genera Candida, Torulopsis , and Saccharomyces . This test is a rapid, inexpensive alternative to current 48- to 72-h methods in which broth turbidity is used as the end point.

The NASA Storm Hazards program was dedicated during the 1984 storm season to a study of lightning strikes on an instrumented F-106B aircraft, during penetrations of thunderstorms at altitudes lower than the 6-8 km center of lightning flash density. These altitudes coincide with the negative charge region of thunderstorms. An analysis of the correlation between the UHF band radar data obtained and TV images of lightning strikes indicates that, with a known aircraft position relative to the radar, the lightning channel motion can be adequately interpreted on the basis of radar echo evolution.

Consideration is given to an incident on March 26, 1987, in which an Atlas/Centaur 67 vehicle carrying a naval communication satellite was struck by a triggered, cloud-to-ground lightning flash about 48 s into the flight. The lightning current coupled a transient signal into the wiring of the Centaur digital computer unit, ultimately causing the breakup of the vehicle. The meteorological conditions at the time of the launch and the lightning flash triggered by the Atlas/Centaur 67 vehicle are analyzed on the basis of studies of the incident by the NASA Investigation Board.