Subnanometer Analysis and Modeling of MBE Grown InP Based MODFETs

InGaAs/InAlAs double-doped double-strained modulation-doped field-effect transistors OD-SMODFETs)1 were grown by solid source molecular beam epitaxy. The structures were characterized using high resolution x-ray diffraction, Hall effect, and cross-sectional scanning tunneling microscopy. A record two-dimensional electron gas (2DEG) sheet density of 8.5 × 10¹²/cm² and 8.1 × 10¹²/cm² for 300 and 77K, respectively, was achieved. The mobility was 6500 and 12000 cm²/ Vs for 300 and 77K, respectively. To the author’s knowledge,² the previous record 2DEG result was 6.58 × 10¹²/cm². The electron mobility was limited by alloy scattering and interface roughness caused by the presence of “clustering.” Using cross-sectional scanning tunneling microscopy to verify the presence of these clusters, we have the first images of the lattice matched InAlAs (spacer)-InGaAs (quantum well) interface. These images reveal clusters that have approximate spherical or cylindrical shapes with equivalent cubic dimensions ranging from 25 to 45Å.     

Coaching executives.

Describes a systems-based approach to executive coaching that attempts to maximize the consideration of contextual factors. The case study of a 44-yr-old male executive illustrates this approach. The author notes that perhaps the greatest danger in coaching individuals from organizations in which there is no ongoing consulting relationship is the possibility that the psychologist may inadvertently participate in scapegoating by an organization or by a boss who is unable or unwilling to look deeply enough at the ways that the environment may be supporting the conditions underlying the individual's seemingly maladaptive response. The more removed the coaching is from the organizational context, the more pains the psychologist must take to ensure that the context is woven into the fabric of the coaching relationship and that the organization be persuaded that it, too, needs to play a role in defining and achieving the desired outcome. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The influence of COD,hydraulic, temperature and pH shocks on the stability of an unheated fluidised bed reactor

An anaerobic fluidised bed reactor, operating at room temperature, was used to treat a synthetic meat extract wastewater with an influent COD of 1250 mg 1^–1. It was subjected to large increases in influent COD and flow rate for 4-and 8-h periods. The reactor tolerated these transient changes satisfactorily and with no long term detrimental effects. Normal operation was regained within 9h. Variations in operating temperature and influent pH were also examined. Four hour duration, 10°C temperature increases and decreases had little effect on effluent quality, but long term operation at a low influent pH was considered inadvisable. A simulated working week experiment was carried out with a 48-h 90% influent flowrate reduction, followed by a return to normal operation. The reactor tolerated these conditions well, with full recovery made within a few hours. The resistance of the reactor to unfavourable process conditions is discussed. The extrapolation of laboratory data to practical operating conditions is also considered.     

The role of the therapeutic alliance in psychotherapy.

Traces the development of the concept of the therapeutic working alliance from its psychodynamic origins to current pantheoretical formulations. Research on the alliance is reviewed under 4 headings: the relation between a positive alliance and success in therapy, the path of the alliance over time, the examination of variables that predispose individuals to develop a strong alliance, and the exploration of the in-therapy factors that influence the development of a positive alliance. Important areas for further research are also noted. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A class of adaptive model- and object-driven nonuniform sampling methods for 3-D inspection

Inspection of manufactured parts and assemblies often requires large amounts of information in the form of test probe point locations and large amounts of time to perform the inspection. By optimally locating the probe points it is possible to maintain inspection reliability using fewer test probes in a reduced amount of time. We have developed algorithms which use part model and manufacturing process information to generate an optimal probe-point location set for routine inspection in a modelbased, open-loop mode. An alternate set of adaptive algorithms that sequentially generates probe-point locations in an object-based, closed-loop mode characterizes a fault when one is detected. Test results show that the algorithms perform favorably on a large class of surfaces.     

Ranges of projectiles with 8 ≤ Z ≤ 20 in Ti,Fe, Ni,Cu, Ag,and Au for energies of 0.0125 to 12.0 MeV/nucleon

Electronic stopping powers of various light elements in Ti, Fe, Ni, Cu, Ag, and Au have been reported recently. Earlier, measurements were made for the stopping of ¹⁶O in Ni, Ag, and Au. With the aid of the Northcliffe-Schilling stopping-power tables these values were extrapolated to values of $\text{E}\text{A}$ equal to 0.0125 and 12.0 MeV/amu. Ranges calculated from these stopping-power values and the stopping powers themselves are presented.     

A study of the validity of the Sales Comprehension Test and Sales Motivation Inventory in differentiating high and low production in life insurance selling.

"Sixty ordinary life insurance agent volunteers were obtained from 17 companies operating in Nebraska. All were experienced life insurance salesmen. The population was dichotomized unequally into 'successful' and 'unsuccessful' groups on the basis of insurance sold during the previous calendar year. All men completed the Sales Motivation Inventory and Sales Comprehenhion Test… . Scores of the two instruments, when combined, yielded a t significant at the .01 level." "These findings suggest that the Sales Motivation Inventory is capable of differentiating the more competent life insurance salesmen from the less competent life insurance salesmen in the geographical area covered, and under the circumstances of this study." 29 refs. (PsycINFO Database Record (c) 2010 APA, all rights reserved)