Research in millimeter wave techniques

Work on the development of an improved 183 GHz subharmonic mixer was concentrated in two areas. First, there was an improved performance from current mixer body designs by testing different diodes and varying the whisker lengths. Second, there is the design of a new body structure. The whisker and diode pinsare in the same piece of the mixer that holds the substrate, reducing any motion of the parts that form the ohmic contacts of the diodes circuit. The broadband, low loss, quasi-optical diplexer, which is designed for use with a single ended mixer, has been developed. It uses a Gaussian beam waveguide as its transmission medium. The difference between the diplexer and other diplexers is the use of a Fabry Perot parallel plate filter. One is a multichannel radiometer system. Another approach is a quasi-optical RF polarization diplexer and another receiver. Some of the receivers developed were flown in aircraft and degraded considerably because of an LO failure. A technique for adding a 118 GHz channel to the existing Atmospheric Moisture Microwave Scanner radiometer system, using the RF diplexing scheme, is presented

Genotypic and phenotypic characteristics of Cronobacter species, with particular attention to the newly reclassified species C. helveticus, C. pulveris, and C. zurichensis [forthcoming]

In 2013, Enterobacter helveticus, E. pulveris and E. turicensis, were reclassified as Cronobacter helveticus, C. pulveris and C. zurichensis, respectively. Previously these species had been used as negative controls for some Cronobacter detection assays. This study examined cultural, biochemical and molecular Cronobacter detection and identification assays, with emphasis on the new species. Additionally, 32 Cronobacter genomes were examined for the presence of PCR target genes using the BLAST function of the online Cronobacter BIGSdb facility. The results of the cultural methods varied and no single medium was able to correctly detect all Cronobacter spp. Since the supporting databases have not been updated to include the Cronobacter genus, Enterobacter sakazakii was returned for four strains of the newly reclassified species with ID32E and none with API 20E. PCR probes targeting rpoB and ompA could not correctly identify the new Cronobacter spp., due to primer specificity or absent target genes. As neonates have been identified as a high-risk group for infection, international standards require the absence of all Cronobacter species in powdered infant formula. However, many conventional detection methods cannot correctly identify the newly recognized species. Conversely, DNA sequence-based methods can adapt to taxonomic revisions and will likely become more common

Perceptions of Consulting in Inclusive Preschool Classrooms

Consulting is a method of delivering special education services in inclusive preschool classrooms (consisting of both students with disabilities and typically developing peers) where special education teachers and related service providers (consultants) visit the classroom and support general education preschool teachers (consultees) in implementing special education services and accommodations. This thesis examined the results of a survey gathering perspectives of both consultants and consultees on the definition of the consulting role and factors in building positive consulting relationships. Providers from both groups who responded to this survey defined the consultant role as working with both students and consultees, but primarily with students. Consultants gave responses calling for additional training and understanding of the consultant role, and consultees emphasized a preference for consultants to be actively involved in the classroom. While consultants and consultees agreed that they have a positive consulting relationship and that consultants are effective in supporting students and consultees, both groups also frequently mentioned a need for establishing a respectful relationship between consultants and consultees

After the Choosing Ceremony: Using Role-Play to Teach Organizational Socialization

Course: Organizational Communication. Objectives: The goal of this activity is to teach students about the stages of organizational socialization and how individuals might be socialized into an organization based on the given identity of that organization

Is there really a case for Off-Site Manufacturing?

The solution often suggested to mitigate poor time, cost and quality in construction is to produce buildings in an automated and industrialised environment. To date, use of Off-Site Manufacturing (OSM) in Australia has enjoyed extremely limited success. Distilling the variables in the success and failure of OSM in other places and applying relevant variables to the Australian context, enables a better response for OSM. The purpose of the paper is therefore to examine whether or not OSM techniques are viable in the Australian housing market. The paper uses a detailed and critical analysis of the literature to examine OSM of housing in various countries, seeking to establish the major reasons for successful and unsuccessful models. The findings are then contrasted with the Australian context seeking criteria to inform successful introduction of OSM into Australia. Among other things, findings indicate the catalyst for the introduction of OSM of housing is almost universally a result of major events such as wars and natural disasters. Innovation has also played a role in encouraging change to construction methods. Whilst the countries addressed have diverse economies and climates compared to each other and Australia, certain common criteria have been found from those examples to assist in modelling an OSM solution in Australia. The implications of this work revolve around the provision of a more efficient, less wasteful and more responsive housing production environment which will potentially improve affordability in the market place

Needed: Clean Sound Eggs

Consumer demand for clean fresh eggs, plus the high speed handling and packaging equipment used by processors emphasize the need for structurally sound eggs. The authors list suggestions for the egg producers

A 94/183 GHz multichannel radiometer for Convair flights

A multichannel 94/183 GHz radiometer was designed, built, and installed on the NASA Convair 990 research aircraft to take data for hurricane penetration flights, SEASAT-A underflights for measuring rain and water vapor, and Nimbus-G underflights for new sea ice signatures and sea surface temperature data (94 GHz only). The radiometer utilized IF frequencies of 1, 5, and 8.75 GHz about the peak of the atmospheric water vapor absorption line, centered at 183.3 GHz, to gather data needed to determine the shape of the water molecule line. Another portion of the radiometer operated at 94 GHz and obtained data on the sea brightness temperature, sea ice signatures, and on areas of rain near the ocean surface. The radiometer used a multiple lens antenna/temperature calibration technique using 3 lenses and corrugated feed horns at 94 GHz and 183 GHz. Alignment of the feed beams at 94 GHz and 183 GHz was accomplished using a 45 deg oriented reflecting surface which permitted simultaneous viewing of the feeds on alternate cycles of the chopping intervals

Draft genome sequence of "Candidatus Cronobacter colletis" NCTC 14934T, a new species in the genus Cronobacter

Members of the Cronobacter genus are associated with serious infections in neonates. This is the first report of the draft genome sequence for the newly proposed species Cronobacter colletis

Efficiency, equality and labelling: an experimental investigation of focal points in explicit bargaining

Efficiency, equality and labelling: an experimental investigation of focal points in explicit bargainin