CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / AvaliaÃÃo dos efeitos centrais e antinociceptivos das fraÃÃes isoladas da raiz de Petiveria alliacea L. (tipi) em camundongos. PATRÃCIA BEZERRA GOMES. Orientador: Profa. Dra. Francisca ClÃa FlorenÃo de Sousa. DissertaÃÃo de Mestrado. Curso de PÃs-graduaÃÃo em Farmacologia. Departamento de Fisiologia e Farmacologia, UFC, 2006. Petiveria alliacea L. à um arbusto da famÃlia Phytolaccaceae, usada popularmente na medicina folclÃrica para o tratamento de uma ampla variedade de doenÃas nas AmÃricas do Sul e Central. As fraÃÃes acetato (FA), hexÃnica (FH), hidroalcoÃlica (FHA) e hidroalcoÃlica precipitada (FHAppt) da raiz do tipi foram estudadas para investigar suas propriedades farmacolÃgicas, nos modelos de nocicepÃÃo (contorÃÃes abdominais induzidas por Ãcido acÃtico, formalina a 1% e placa quente) e nos modelos comportamentais clÃssicos (campo aberto, labirinto em cruz elevado- LCE, rota rod, tempo de sono induzido por pentobarbital, nado forÃado e convulsÃes induzidas por pentilenotetrazol- PTZ). Foram analisados tambÃm os fitoconstituintes presentes no tipi, os efeitos farmacolÃgicos gerais e sua toxicidade aguda. As fraÃÃes foram administradas, via oral (v.o.) e/ou intraperitoneal (i.p.), nas doses de 100 e 200 mg/kg, em camundongos fÃmeas. A abordagem fitoquÃmica das fraÃÃes de Petiveria alliacea revelou a presenÃa de alcalÃides em FA, cumarinas em FA, FHA e FHAppt, saponinas e triterpenos em FA, FH, FHA e FHAppt. O extrato hidroalcoÃlico (500, 1000, 1500 e 2000 mg/kg, i.p.; 1000, 2000, 3000 e 4000 mg/kg, v.o.) do tipi apresentou uma baixa toxicidade e os parÃmetros mais visualizados foram analgesia, diminuiÃÃo da motilidade e passividade. Todas as fraÃÃes inibiram as contorÃÃes abdominais induzidas por Ãcido acÃtico. FA (200 mg/kg, i.p.), FH e FHAppt (100 e 200 mg/kg, i.p.), reduziram a nocicepÃÃo produzida pela formalina na 1 e 2 fases. FHA (100 e 200 mg/kg, i.p.) apresentou uma inibiÃÃo significativa na 1 fase deste teste, indicando um possÃvel efeito antinociceptivo. O efeito antinociceptivo produzido por FHAppt (200 mg/kg, i.p.) foi revertido pela naloxona (2mg/kg, s.c.), mostrando uma possÃvel participaÃÃo do sistema opiÃide neste processo. Nenhum efeito significativo foi observado no teste da placa quente. Todas as fraÃÃes do tipi induziram uma diminuiÃÃo significativa na atividade locomotora, rearing e grooming no teste do campo aberto, sugerindo uma possÃvel aÃÃo depressora central. Nenhum efeito significativo foi evidenciado na coordenaÃÃo motora dos animais no teste do rota rod. No LCE, FA (100 e 200 mg/kg, v.o.) reduziu o NEBA (n de entradas nos braÃos abertos) e o TPBA (tempo de permanÃncia nos braÃos abertos). FA, FH e FHA (100 e 200 mg/kg, i.p.), FHAppt (200mg/kg, i.p.) apresentaram uma significativa reduÃÃo do TPBA, indicando uma ausÃncia do efeito ansiolÃtico. As fraÃÃes da raiz de Petiveria alliacea promoveram um aumento significativo do tempo de imobilidade dos camundongos no teste do nado forÃado. AlÃm disso, corroborando estes resultados, as fraÃÃes causaram um prolongamento do tempo de sono induzido por pentobarbital, confirmando um provÃvel efeito sedativo e depressor central. Os efeitos neurofarmacolÃgicos de FHA (200 mg/kg, i.p.), observados nos testes do campo aberto e tempo de sono, nÃo foram revertidos com a administraÃÃo de flumazenil (2,5 mg/kg, i.p.), indicando que o mecanismo de aÃÃo de FHA, provavelmente, nÃo està relacionado com a participaÃÃo dos receptores GABAÃrgicos. Todas as fraÃÃes da raiz de Petiveria alliacea aumentaram a latÃncia da 1 convulsÃo e o tempo de morte das convulsÃes induzidas por PTZ nos animais, confirmando seu uso popular como anticonvulsivante. Os resultados mostraram que as diferentes fraÃÃes de Petiveria alliacea L. possuem significativo potencial antinociceptivo, sedativo, depressor e anticonvulsivante, devido à presenÃa destes constituintes, dando suporte ao uso da medicina folclÃrica desta planta. / Evaluation of the central and antinociceptive effects of isolated fractions from the root of Petiveria alliacea L. (tipi) in mice. PATRÃCIA BEZERRA GOMES. Supervisor: Profa. Dra. Francisca ClÃa FlorenÃo de Sousa. Master Dissertation. Course of Post-graduation in Pharmacology. Department of Physiology and Pharmacology, UFC, 2006. Petiveria alliacea L. a shrub from Phytolaccaceae family, is popularly used in folk medicine for treating a wide variety of disorders in South and Central America. The acetate (FA), hexanic (FH), hydroalcoholic (FHA) and precipitated hydroalcoholic (FHAppt) fractions from the root of tipi were studied to investigate its pharmacological properties in animals nocicepcion models (abdominal contractions induced by acetic acid, formalin 1% and hot plate tests) and in the classical behavioral models (open-field, elevated plus maze- EPM, rota rod, barbiturate-induced sleeping time, forced swimming and pentylenetetrazole (PTZ)-induced convulsions tests). Were analyzed the phytoconstituents presents in it, the general pharmacological effects and acute toxicity. The fractions were administered orally (p.o.) and/or intraperitoneally (i.p.), at single doses of 100 and 200 mg/kg, in female mice. The phytochemical approach of the fractions from Petiveria alliacea demonstrated the presence of alkaloids in FA, coumarins in FA, FHA and FHAppt, saponins and triterpenes in FA, FH, FHA and FHAppt. The hidroalcoholic extract (500, 1000, 1500 and 2000 mg/kg, i.p.; 1000, 2000, 3000 and 4000 mg/kg, p.o.) of the tipi presented a low toxicity and the parameters more visualized were analgesic, decrease in locomotor activity and passive behavior. All the fractions inhibited the abdominal contractions induced by acetic acid. FA (200 mg/kg, i.p.), FH and FHAppt (100 and 200 mg/kg, i.p.), reduced the nocicepcion produced by formalin in the 1st and 2nd phases. FHA (100 and 200 mg/kg, i.p.) presented a significant inhibition on the 1st phase, of this test, indicating a possible antinociceptive effect. The antinociceptive effect produced by FHAppt (200 mg/kg, i.p.) was reversed by naloxone (2 mg/kg, s.c.), showing the participation of the opioid system in this process. No significant effect was observed in the hot plate test. All the fractions of tipi induced a significant decrease in the locomotor activity, rearing and grooming in the open field test, suggesting a possible central depressant action. No significant effect was evident on motor coordination of the animals in the rota rod test. On LCE, FA (100 and 200 mg/kg, p.o.) decreased the NEOA (n of entries in the open arms) and the TPOA (time of permanence in the open arms). FA, FH and FHA (100 and 200 mg/kg, i.p.), FHAppt (200mg/kg, i.p.) presented a significant reduction of the TPOA, indicating an absence of anxiolytic effect. The fractions from the root of Petiveria alliacea promoted a significant increase in the immobility time of the mice in the forced swimming test. Moreover, corroborating these results, as caused a prolongation of the pentobarbital-induced sleeping time, confirmed a probable sedative and central depressant effect. The neuropharmacological effects of the FHA (200 mg/kg, i.p.), observed in the open field and barbiturate-induced sleeping time tests, werenât reverted with the administration of the flumazenil (2.5 mg/kg, i.p.), indicating that the mechanism of action of the FHA, probably didnât related with the participation of the GABAergic receptors. All the fractions of Petiveria alliacea increased the latency to the first convulsion and the lethal time of the PTZ-induced convulsions test in the animals, confirmed its popular use as anticonvulsant. Results showed that the different fractions of Petiveria alliacea L. have significant antinociceptive, sedative, depressant and anticonvulsant potentials, due to presence in this constituents, supporting folk medicine use of this plant.

Stone circles are among the most common and understudied archaeological features in the Rocky Mountains and High Plains. Their widespread availability coupled with increased archaeological research accompanying oil and natural gas exploration in the region has expanded the availability and size of the region’s radiocarbon database. The dates as data approach uses radiocarbon ages as variables from a larger sample. This thesis compiles radiocarbon ages associated with tipi ring sites in Wyoming and Montana and creates a summed probability distribution from these ages to serve as a proxy for prehistoric mobility. The distribution is corrected for taphonomic bias, or data loss, and compared to two paleoenvironmental proxies from northwestern Wyoming lakes to determine whether prehistoric mobility meets the expectations of the patch choice model. Running correlation windows provide statistical comparisons between datasets. Although a weak statistical relationship is apparent between mobility and the paleoenvironmental reconstructions over the 5000-year study period, no statistically significant correlations were identified at 150-or 200-year scales. Moderate strength correlations between the environmental data and mobility proxy when mobility is lagged suggest a delayed relationship between the datasets. Future research must include expanding the radiocarbon database and obtaining finer-scale paleoenvironmental reconstructions.

Genom webbaserade enkäter har data insamlats för att undersöka huruvida det finns en korrelation med de olika personlighetsdragen inom The Big Five och olika dimensioner av prosocialt beteende. Till detta utformades en enkät genom sammanslagning av Ten Item Personality Inventory (TIPI) och Prosocial Tendency Measure (PTM), där index togs ut för alla olika dimensioner. Respondenter rekryterats genom ett tillgänglighetsurval (N= 79, varav 24 stycken män, M= 39,6 år, SD= 13.6, 55 stycken kvinnor, M= 40.1 år, SD= 13.6 ). Totalt av urvalet var 13,8 procent uppvuxna i en storstad, 28,8 procent uppvuxna i småstad och 57,5 procent inom landsbygd. Inom urvalet hade 10 procent en grundskoleutbildning, 38,8 procent gymnasieutbildning, och 51,3 högskole- eller universitetsutbildning. Resultatet visar att det finns samvariationer mellan de olika personlighetsdragen och olika dimensioner av prosocialt beteende.

Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / Este trabalho descreve o estudo dos componentes volÃteis e nÃo volÃteis das raÃzes de Petiveria alliaceae, incluindo as atividades nematicida e inseticida do Ãleo essencial. Para o estudo quÃmico, fitonematicida e inseticida utilizou-se as raÃzes da planta, das quais foram obtidos o Ãleo essencial e os constituintes nÃo-volÃteis. Do Ãleo essencial das raÃzes foram identificados os seguintes componentes: benzaldeido (61,5%) (constituinte majoritÃrio) dissulfeto de dibenzila (18,1%), transestilbeno (14,1%) e cinamaldeido (6,3%), sendo que esses dois Ãltimos compostos tambÃm foram isolados atravÃs de cromatografia em camada delgada preparativa e identificados por RMN 1H e 13C. O tratamento cromatogrÃfico dos extratos etanÃlico, acetato de etila e hexÃnico permitiu o isolamento de uma mistura de duas mercaptanas, dissulfeto de dibenzila e o trissulfeto de dibenzila, dissulfeto de dibenzila, uma alantoina e a sacarose, que pela primeira vez foram isoladas das raÃzes de Petiveria alliaceae. As mercaptanas isoladas sÃo conhecidas na literatura por suas atividades fungicidas e nematicida. O Ãleo essencial extraÃdo das raÃzes de P. alliaceae e seus constituintes foram submetidos aos ensaios de atividades nematicida contra larvas de Meloidogyne incÃgnita (nematÃide de galhas) e inseticida contra a Mosca branca (Bemisia tabaci) inseto do feijÃo (Callosobruchus maculatus). Os Ãleos essenciais obtidos de P. alliaceae coletadas nas duas localidades diferentes apresentaram significantes atividades inseticida e nematicida. Os constituintes isolados tiveram suas estruturas elucidadas atravÃs de mÃtodos espectromÃtricos de IV, EM, RMN 1H e 13C uni e bidimensionais (COSY, HMQC e HMBC). / This work describes the study of the volatile and the non-volatile components from the roots of Petiveria alliaceae, including the nematicidal and insecticidal activities of the essential oil. The following components were identified in the essential oil: benzaldehyde as the major constituent (61, 5 %), cinnamaldehyde (6, 3%), dibenzyl disulphide (18, 1%), transstilbene (14, 1%). The two last compounds were also isolated through a chromatography in a preparative thin layer identified by RMN 1H and 13C. The isolation of a mixture of two mercaptans, benzyl disulphide and dibenzyl trisulphide, saccharose and allantoin, which were isolated for the first time from the Petiveria alliaceae, was permitted by the chromatographic treatment of the ethyl acetate, hexane, and ethanolic extracts. The isolated mercaptans are known in literature for their fungicide and insecticide activities. The constituents of the essential oil, extracted from the roots of Petiveria alliaceae, were submitted to the nematicidal activities against Meloidogyne incognita larva, insecticide against white fly (Bemisa tabaci) and insect of the beans (Callosobruchus maculatos). Significant insecticidal and nematicidal activities were present in the essential oil from the P. alliaceae, collected in two different localities. The isolated constituents had their structure elucidated through spectrometric methods of IV, EM, RMN 1H and 13C uni and bi-dimensional (COSY, HMQC and HMBC)

The purpose of this study was to investigate the relationship between students’ academic motivation and personality in different classes at a university in central Sweden. The study was conducted on students of economics and nursing, who were asked to answer a paper questionnaire. The questionnaire of consisted two parts, the first part was a TIPI test which measured personality traits using the Big Five theory and the second part was an AMS test that measured academic motivation. A total of 106 students participated in the study, including 50 from economics and 56 from nursing. The main result showed that the strongest significant correlation was between the personality trait conscientiousness and internal motivation. This relationship was found to completely rely on the nursing students replies, giving an indication that the nursing students who were self-disciplined and targeted were motivated by internal factors. This relationship was not found in the replies from the economics students. There was some difference between the two study specializations. / Syftet med studien var att undersöka förhållandet mellan akademisk motivation och personlighet hos studenter med olika studieinriktningar på en högskola i Mellansverige. Studien genomfördes på studenter från ekonom- och sjuksköterskeprogrammet som fick besvara en pappersenkät. Enkäten bestod av två delar, varav den första var ett TIPI-test som mätte personlighetsdimensioner med hjälp Big Five-teorin och den andra var ett AMS-test som mätte akademisk motivation. Totalt deltog 106 studenter i undersökningen, varav 50 från Ekonomprogrammet och 56 från Sjuksköterskeprogrammet. Huvudresultatet visade att det starkaste signifikant sambandet var mellan personlighetsdimensionen samvetsgrannhet och intern motivation. Detta samband visade sig helt bäras av sjuksköterskestudenternas svar, vilket gav en indikation på att de sjuksköterskestudenter som var självdisciplinerade och målinriktade motiverades av interna faktorer. Detta samband återfanns över huvudtaget inte hos ekonomstudenterna. Det förelåg en viss skillnad mellan de två olika studieinriktningarna.

Syftet med studien är att undersöka om det går att predicera individers attribution av negativ kritik från sin chef till externa eller interna orsaker i hypotetiska situationer, beroende på individens personlighetsdrag enligt femfaktormodellen. Datainsamling genomfördes på sociala medier via en digital enkät, baserad på The Attributional Style Questionnaire och en svensk översättning av Ten-Item Personality Inventory. De 116 respondenterna i studien har varit verksamma i arbetslivet under minst ett år på en anställningsgrad på 50% eller mer. Studien visade att personlighetsdragen från femfaktorsmodellen inte kunde predicera om en individ attribuerade externt eller internt avseende negativ kritik från chefen. Ingen signifikant skillnad mellan könen hittades. / The purpose of the study was to investigate whether it was possible to predict an individual's attribution of negative criticism from their boss in hypothetical situations (based on internal- external attribution and the five-factor model). Data collection was carried out on social media through a digital survey, based on The Attributional Style Questionnaire and a Swedish translation of the Ten-Item Personality Inventory. The 116 participants involved in the study had a work experience of a minimum of one year, with a full-time position or part- time employment of 50% or higher. The study showed that personality traits could not predict whether an individual attributed external or internal negative criticism from the manager. No significant difference between the sexes was found.

Ce travail porte sur l'étude des transformations induites par les procédés industriels (TIPI) dans le domaine de l'industrie pharmaceutique. Il se focalise sur le procédé de compression directe et sur deux principes actifs modèles qui sont la caféine et la carbamazépine. Des méthodes de caractérisations expérimentales des transitions de phases dans les comprimés ont été développées. La densité des comprimés a été mesurée par tomographie à rayons X et évaluée en surface par micro-indentation. Des méthodes thermiques telles que l'ACD et l'ATG ont été utilisées pour estimer les transformations dans tout le volume des comprimés. La spectroscopie Raman à basses fréquences a été appliquée pour la première fois pour cartographier la surface des comprimés. La spectroscopie Raman à hautes fréquences a été développée dans le but d'augmenter le nombre de données et d'automatiser le traitement des spectres. La transformation de la caféine forme I (métastable) en forme II (stable) nécessite plusieurs années dans les conditions ambiantes. Les investigations menées sur la caféine I ont révélé que la transition est induite par la compression directe car une transformation partielle en forme II est mesurée dans tout le volume du comprimé. La transformation continue au sein du comprimé lors de son stockage et le taux de transformation reste supérieur à celui de la poudre de caféine forme I non comprimée. Les quantifications misent en place par ACD et spectroscopie Raman à basses fréquences ont montré des transformations de la forme I dans tout le volume des comprimés et leur valeur est indépendante de l'intensité de la pression de compression. De plus, les deux formes de la caféine coexistent à l'échelle micrométrique, ce qui tend à prouver que des cristallites de forme II apparaissent dans tous les grains de caféine. La caféine formulée avec de la cellulose microcristalline présente un comportement plastique lors de la compression. La tomographie à rayons X révèle l'existence d'une zone locale de densité plus élevée au niveau des parois latérales, sans que ceci influe localement sur le taux de transition de la caféine. L'emploi d'une caféine calibrée entraine un comportement plus fragmentaire, qui semble réduire le taux de transformation mesuré. Aucune transformation de phase solide de la carbamazépine dihydrate n'a été décelée par ATG et spectroscopie Raman dans les comprimés fabriqués. Il semble que ce principe actif soit stable en compression directe

BEZERRA, J. N. S. Composição química,atividade fitonematicida e inseticida de Tipi (Petiveria alliaceae). 2006. 121 f. Dissertação (Mestrado em Química Orgânica) - Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2006. / Submitted by José Jairo Viana de Sousa (jairo@ufc.br) on 2014-10-10T18:53:22Z No. of bitstreams: 1 2006_dis_jnsbezerra.pdf: 6462938 bytes, checksum: a3066d6d4b93361ed9f4c6ca281f1d98 (MD5) / Approved for entry into archive by José Jairo Viana de Sousa(jairo@ufc.br) on 2015-03-05T18:04:49Z (GMT) No. of bitstreams: 1 2006_dis_jnsbezerra.pdf: 6462938 bytes, checksum: a3066d6d4b93361ed9f4c6ca281f1d98 (MD5) / Made available in DSpace on 2015-03-05T18:04:49Z (GMT). No. of bitstreams: 1 2006_dis_jnsbezerra.pdf: 6462938 bytes, checksum: a3066d6d4b93361ed9f4c6ca281f1d98 (MD5) Previous issue date: 2006 / This work describes the study of the volatile and the non-volatile components from the roots of Petiveria alliaceae, including the nematicidal and insecticidal activities of the essential oil. The following components were identified in the essential oil: benzaldehyde as the major constituent (61, 5 %), cinnamaldehyde (6, 3%), dibenzyl disulphide (18, 1%), transstilbene (14, 1%). The two last compounds were also isolated through a chromatography in a preparative thin layer identified by RMN 1H and 13C. The isolation of a mixture of two mercaptans, benzyl disulphide and dibenzyl trisulphide, saccharose and allantoin, which were isolated for the first time from the Petiveria alliaceae, was permitted by the chromatographic treatment of the ethyl acetate, hexane, and ethanolic extracts. The isolated mercaptans are known in literature for their fungicide and insecticide activities. The constituents of the essential oil, extracted from the roots of Petiveria alliaceae, were submitted to the nematicidal activities against Meloidogyne incognita larva, insecticide against white fly (Bemisa tabaci) and insect of the beans (Callosobruchus maculatos). Significant insecticidal and nematicidal activities were present in the essential oil from the P. alliaceae, collected in two different localities. The isolated constituents had their structure elucidated through spectrometric methods of IV, EM, RMN 1H and 13C uni and bi-dimensional (COSY, HMQC and HMBC) / Este trabalho descreve o estudo dos componentes voláteis e não voláteis das raízes de Petiveria alliaceae, incluindo as atividades nematicida e inseticida do óleo essencial. Para o estudo químico, fitonematicida e inseticida utilizou-se as raízes da planta, das quais foram obtidos o óleo essencial e os constituintes não-voláteis. Do óleo essencial das raízes foram identificados os seguintes componentes: benzaldeido (61,5%) (constituinte majoritário) dissulfeto de dibenzila (18,1%), transestilbeno (14,1%) e cinamaldeido (6,3%), sendo que esses dois últimos compostos também foram isolados através de cromatografia em camada delgada preparativa e identificados por RMN 1H e 13C. O tratamento cromatográfico dos extratos etanólico, acetato de etila e hexânico permitiu o isolamento de uma mistura de duas mercaptanas, dissulfeto de dibenzila e o trissulfeto de dibenzila, dissulfeto de dibenzila, uma alantoina e a sacarose, que pela primeira vez foram isoladas das raízes de Petiveria alliaceae. As mercaptanas isoladas são conhecidas na literatura por suas atividades fungicidas e nematicida. O óleo essencial extraído das raízes de P. alliaceae e seus constituintes foram submetidos aos ensaios de atividades nematicida contra larvas de Meloidogyne incógnita (nematóide de galhas) e inseticida contra a Mosca branca (Bemisia tabaci) inseto do feijão (Callosobruchus maculatus). Os óleos essenciais obtidos de P. alliaceae coletadas nas duas localidades diferentes apresentaram significantes atividades inseticida e nematicida. Os constituintes isolados tiveram suas estruturas elucidadas através de métodos espectrométricos de IV, EM, RMN 1H e 13C uni e bidimensionais (COSY, HMQC e HMBC).

En hög grad av motivation och kunskapsutveckling har setts som nära sammankopplat med en god prestationsförmåga i arbetslivet. En del av variationen av motivation har visat sig kunna förklaras genom personlighet och idag används personlighetstester frekvent i rekryteringsprocessen. Syftet med studien var därför att undersöka om personlighetsegenskaper enligt femfaktorteorin kunde predicera intern respektive extern arbetsmotivation. Hypotesen var att olika personlighetsegenskaper kunde predicera intern respektive extern arbetsmotivation. Studien använde sig av mätverktyget Work Extrinsic and Intrinsic Motivation Scale (WEIMS) för att undersöka intern (W-SDM) respektive extern (W-NSDM) arbetsmotivation. Personlighetsegenskaper undersöktes med Ten Items Personality Inventory (TIPI) som grundade sig i femfaktorteorin med fem personlighetsegenskaper. Multipel regressionsanalys visade att personlighetsegenskaper som neuroticism och extraversion signifikant kunde predicera arbetsmotivation. En hög grad av egenskapen neuroticism kunde predicera både en hög intern och extern nivå av arbetsmotivation, medan högre nivåer av extraversion kunde predicera en hög nivå av extern arbetsmotivation. Sammanfattningsvis kan det sägas att graden av personlighetsegenskaper som neuroticism och extraversion kan predicera nivån av intern och extern arbetsmotivation. / A high degree of motivation has been closely linked to good performance in work organizations. Some of the variation in motivation has been shown to be explained by personality, and today personality tests are frequently used in recruitment processes. Therefore, the purpose of this study was to investigate whether different personality traits, based on the five-factor model, could predict internal and external work motivation. The hypothesis was that different personality traits could predict internal and external work motivation. In this study, the Work Extrinsic and Intrinsic Motivation Scale (WEIMS) was used to examine internal (W-SDM) and external (W-NSDM) work motivation. Personality traits were examined with Ten Items Personality Inventory (TIPI), which was based on the Big five with five personality traits. Multiple regression analysis showed that a high degree of neuroticism could predict both a high internal and external level of work motivation, while higher levels of extraversion could predict a high level of external work motivation. In summary, the degree of personality traits such as neuroticism and extraversion can predict the level of internal and external work motivation.

The prehistory of the North American Plains is an exciting and dynamic area of research within the discipline of archaeology. However, for the most part, the descriptions that archaeologists have assigned to the people who created the archaeological record in this region are either gender neutral or gendered male by default. In recent years Plains archaeologists have begun to explore how, where, and why gender representation can be found on the Plains.<p> This thesis seeks to further Plains gender research. Specifically, task differentiation by gender for the Blackfoot, a Plains contact period culture' group, is examined and detailed in this study. The data compiled are used to set up a task differentiation model for the Blackfoot. How the Blackfoot conceptually structured the interior space of a tipi is also examined. The combined data are used to establish a model for the gendered distribution of space within a tipi. Once the model for the gendered distribution of space is established, it is tested against ten completely excavated tipi rings. The results of the spatial analysis indicate that gender can be seen archaeologically, within the features used in this study. Additionally, the findings of the analysis indicate that the best artifact classes to use when examining the gendered distribution of space are ceramics, lithics, and faunal material. Finally, recommendations for further testing of the model are made in order to confirm that the model can be used to examine gendered spaces at Plains tipi rings.