Judicatory Leadership and the Urban Challenge: A Wesleyan District Makes the Move

Detroit, Michigan, finds itself listed in the “top ten” of our nation’s dead or dying cities. After a forty year absence, God is calling the Wesleyan Church back into this great city. This denomination’s East Michigan District is leading the way. The thrust of urban ministry is gaining momentum as church leaders commit to reaching the cities. Judicatory leaders must understand the challenges that come with the opportunities. Richard chronicles the East Michigan District’s journey and shares their experience and learning to assist others in making the move into church planting in a major city’s urban environment

Judicatory Leadership and the Urban Challenge: A Wesleyan District Makes the Move

Detroit, Michigan, finds itself listed in the “top ten” of our nation’s dead or dying cities. After a forty year absence, God is calling the Wesleyan Church back into this great city. This denomination’s East Michigan District is leading the way. The thrust of urban ministry is gaining momentum as church leaders commit to reaching the cities. Judicatory leaders must understand the challenges that come with the opportunities. Richard chronicles the East Michigan District’s journey and shares their experience and learning to assist others in making the move into church planting in a major city’s urban environment

Frequency response in short thermocouple wires

Theoretical expressions are derived for the steady state frequency response of a thermocouple wire. In particular, the effects of axial heat conduction are demonstrated for a nonuniform wire with unequal material properties and wire diameters across the junction. The amplitude ratio at low frequency omega approaches 0 agrees with the results of Scadron and Warshawsky (1952) for a steady state temperature distribution. Moreover, the frequency response for a nonuniform wire in the limit of infinite length l approaches infinity is shown to reduce to a simple expression that is analogous to the classic first order solution for a thermocouple wire with uniform properties. Theoretical expressions are also derived for the steady state frequency response of a supported thermocouple wire. In particular, the effects of axial heat conduction are demonstrated for both a supported one material wire and a two material wire with unequal material properties across the junction. For the case of a one material supported wire, an exact solution is derived which compares favorably with an approximate expression that only matches temperatures at the support junction. Moreover, for the case of a two material supported wire, an analytical expression is derived that closely correlates numerical results. Experimental measurements are made for the steady state frequency response of a supported thermocouple wire. In particular, the effects of axial heat conduction are demonstrated for both a supported one material wire (type K) and a two material wire (type T) with unequal material properties across the junction. The data for the amplitude ratio and phase angle are correlated to within 10 pct. with the theoretical predictions of Forney and Fralick (1991). This is accomplished by choosing a natural frequency omega sub n for the wire data to correlate the first order response at large gas temperature frequencies. It is found that a large bead size, however, will increase the amplitude ratio at low frequencies but decrease the natural frequency of the wire. The phase angle data are also distorted for imperfect junctions

Numerical investigation of high-pressure combustion in rocket engines using Flamelet/Progress-variable models

The present paper deals with the numerical study of high pressure LOx/H2 or LOx/hydrocarbon combustion for propulsion systems. The present research effort is driven by the continued interest in achieving low cost, reliable access to space and more recently, by the renewed interest in hypersonic transportation systems capable of reducing time-to-destination. Moreover, combustion at high pressure has been assumed as a key issue to achieve better propulsive performance and lower environmental impact, as long as the replacement of hydrogen with a hydrocarbon, to reduce the costs related to ground operations and increase flexibility. The current work provides a model for the numerical simulation of high- pressure turbulent combustion employing detailed chemistry description, embedded in a RANS equations solver with a Low Reynolds number k-omega turbulence model. The model used to study such a combustion phenomenon is an extension of the standard flamelet-progress-variable (FPV) turbulent combustion model combined with a Reynolds Averaged Navier-Stokes equation Solver (RANS). In the FPV model, all of the thermo-chemical quantities are evaluated by evolving the mixture fraction Z and a progress variable C. When using a turbulence model in conjunction with FPV model, a probability density function (PDF) is required to evaluate statistical averages of chemical quantities. The choice of such PDF must be a compromise between computational costs and accuracy level. State- of-the-art FPV models are built presuming the functional shape of the joint PDF of Z and C in order to evaluate Favre-averages of thermodynamic quantities. The model here proposed evaluates the most probable joint distribution of Z and C without any assumption on their behavior.Comment: presented at AIAA Scitech 201

Preparation of Monomeric 2,2-Dymethil-1,3-PropyleneDimethylmalonate; Potential Example of Conformational Isomerism and An Example of the Use of Molecular Models in Research Studies

Dengan penggunaan model2 molekul dapat dilihat kemungkinan adanja suatu isomeri jang stabil dalam senjawa lingkar berinti delapan jalah monomer 2,2 "“dimetilpropilen dimetilmalonat (1).Senjawa ini dibuat dengan djalan reaksi pertukaran ester antara 2,2-dimetil-1,3-propandiol dan etil dimetilmalonat, dengan dibutilstanni dibutoxida sebagai katalisator.Suatu hasil jang lumajan dapat diperoleh dengan teknik destilasi bertingkat jang lambat sekali dari hasil tjampuran reaksi.Hasil tersebut telah diselidiki dan terbukti adalah senjawa lingkar berinti delapan jang diharapkan, jalah suatu matjam bentuk jang biasanja sukar sekali dibuat.Kenjataan telah diperoleh dengan penggunaan chromatografi gas bahwa isomer2 konformasi dari I tidak stabil pada 150°C.Belum didapat keterangan2 lebih landjut mengenai kestabilan isomer2 konformasi pada suhu kamar

EXERT and TEAM 21: Partnership for Professional Development

Superintendents and principals need a location and time for professional development. EXERT and TEAM 21 are examples of cooperative school/business/university partnerships which have provided new ways to meet these needs

Annotated bibliography of published articles, speeches and books having significance to public relations

Thesis (M.S.)--Boston University, 195