12,969 research outputs found
UA Little Rock Seminar in Public History (HIST 7391) files on the Joseph Pfeifer Kiwanis Camp, 2003
No full textThis collection contains a project report, interview transcriptions, and audiocassettes from the University of Arkansas at Little Rock's Seminar in Public History's 2003 project, "From the Ground Up: The First Seventy-Five Years at Joseph Pfeifer Kiwanis Camp," directed by Deborah J. Baldwin, Ph.D., which includes a history of the Joseph Pfeifer Kiwanis Camp and interviews with former campers, counselors, an executive director, a chairman, and a board member.; Project staff: Adam Bergfeld, Genti Borici, Jamie Griffith, Matilda Louvring, Sandra Ransom-Hubert, Scott Root, Shirley Schuette, and Kristi Smith.UA Little Rock Seminar in Public History (HIST 7391) files on the Joseph Pfeifer Kiwanis Camp, 200
Probability Propagation in Selected Aristotelian Syllogisms
No full textThis paper continues our work on a coherence-based probability semantics for Aristotelian syllogisms (Gilio, Pfeifer, and Sanfilippo, 2016; Pfeifer and Sanfilippo, 2018) by studying Figure III under coherence. We interpret the syllogistic sentence types by suitable conditional probability assessments. Since the probabilistic inference of from the premise set is not informative, we add p(M|(S ee M))>0 as a probabilistic constraint (i.e., an ``existential import assumption'') to obtain probabilistic informativeness. We show how to propagate the assigned premise probabilities to the conclusion. Thereby, we give a probabilistic meaning to all syllogisms of Figure~III. We discuss applications like generalised quantifiers (like Most are ) and (negated) default
The Heterogeneous Economic Consequences of Works Council Relations
No full textI use a question about works council relations from the 2006 wave of the IAB Establishment panel to analyze the heterogeneous effects of works councils on productivity, wages, and profits. The results indicate that the effects differ significantly between works council relationship types in a systematic pattern. The overall findings are in line with productivity-enhancing and rent-sharing functions of works councils.Codetermination; Firm performance; Industrial relations; Works councils
Pfeifer Sport JL
No full text1/2 right side view of a Pfeifer Sport JL civilian plane on the ground.https://corescholar.libraries.wright.edu/special_ms223_photographs/2006/thumbnail.jp
Freidl Pfeifer, Alta Ski School Director, circa 1942.
No full textPhoto shows Freidl Pfeifer, Alta Ski School Director, circa 194
DEVELOPMENT OF PROCESSING TECHNOLOGY FOR CLEANING ULTRAFINE TITANIUM DIOXIDE
No full textPri tem diplomskem delu smo poskušali razviti postopek za čiščenje ultrafinega titanovega dioksida. Ugotovili smo, da je čiščenje zelo efektivno s pomočjo centrifugiranja.
Imeli smo tri suspenzije ultrafinih delcev titanovega dioksida. Dve suspenziji sta vsebovali rutil, ki je bil dispergiran v različnih koncentracijah kisline, tretja suspenzija pa je vsebovala anatas. Pred čiščenjem smo dodali koagulant, da smo dobili boljše rezultate in hitrejšo ločitev. Čiščenje je potekalo v treh stopnjah.
Najprej smo eksperimente izvedli v laboratorijskem merilu, da smo določili optimalne procesne parametre. Dobljene rezultate smo preizkusili na pilotni centrifugi. Na podlagi tega smo pripravili tehnološke sheme v industrijskem merilu in izračunali kapacitete tehnološkega postopka.We were trying to develop processing technology for cleaning ultra- fine titanium dioxide. The experiments showed, that the process is effective only if centrifuges are used.
Three different suspensions of ultra-fine titanium dioxide were used. Two of the suspensions had dispersed particles of rutil in different concentrations of acid. In the third suspension dispersed particles of anatas were used.
Before cleaning, the coagulant was added. In this way better results were obtained and the whole separation occured quicker. The whole process was performed in three stages.
First the experiments were performed on laboratory scale and optimal process parameters were determined. Based on these results the process was performed on pilot scale. Based on all obtained parameters and results, a technology scheme was developed and the capacities for the technological process were calculated
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Letter to Emily from Fr. Pfeifer
No full textA letter from Fr. Pfeifer, O.M.D. to "Emily" on finishing nursing school, caring for the sick, mission work, and conditions in Salina Cruz, Mexico, and the surrounding region
Preparation and application of red gypsum adsorbent for waste water treatment
No full textV sklopu doktorske disertacije smo proučili, ali je mogoče iz rdeče sadre, ki trenutno predstavlja odpadek in obremenjuje okolje, pripraviti učinkovit adsorbent, ki bi bil uporaben za čiščenje odpadnih vod različnih pH vrednosti. Na učinkovitost posameznih adsorbentov ima velik vpliv način sintetiziranja kakor tudi raztopina, ki jo želimo čistiti. V sklopu priprave adsorbenta smo spreminjali koncentracijsko razmerje vhodnih surovin, temperaturo priprave adsorbenta, čas mešanja, intenziteto mešanja in preverjali učinek različne količine dodanega adsorbenta na potek adsorpcije. Analizirali smo lastnosti adsorbenta in preverili njegovo učinkovitost. Rezultate smo primerjali z rezultati, ki smo jih dobili z uporabo zeolita, bentonita in bele žlindre, kakor tudi z rezultati različnih avtorjev.As part of the doctoral dissertation, we examined whether it is possible to prepare an effective adsorbent from red gypsum, which is currently waste and burdens the environment, which would be useful for cleaning wastewater of different pH values. The efficiency of individual adsorbents is greatly influenced by the method of synthesis as well as the solution to be cleaned. As part of the preparation of the adsorbent, we changed the concentration ratio of the input raw materials, the temperature of the adsorbent preparation, the mixing time, the intensity of the mixing and checked the effect of different amounts of added adsorbent on the course of adsorption. We analyzed the properties of the adsorbent and checked its effectiveness. The results were compared with the results obtained using zeolite, bentonite and white slag, as well as with the results of various authors
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