Thesis (D. Min.)--Abilene Christian University, 2000. / A project "designed to encourage the Singing Oaks Church of Christ in Denton, Texas, to develop a more intentional reliance on God through the use of a spiritual formation manual focused on biblical advent themes and particular spiritual disciplines ... contemplative prayer, fasting, and silence"--Abstract. Includes abstract and vita. Includes bibliographical references (leaves 106-114, 243-245).

Thesis (D. Min.)--Southwestern Baptist Theological Seminary, 1995. / Includes bibliographical references (leaves 270-280).

Thesis (D. Min.)--Southwestern Baptist Theological Seminary, 1995. / Includes bibliographical references (leaves 270-280).

Article from presumably 'Tha Naturalist', published in 19?2. Abstract taken from fist paragraph: "An oak tree dating back to the 17th Century with a diameter of four metres (and a circumference of 12,66m) on Anglo American Farms’ historic Vergelegen Estate near Somerset West, is thought to be the oldest specimen in South Africa."

No description available.

L'efficience intrinsèque d'utilisation de l'eau (Wi) définit comme le rapport de l'assimilation nette de CO2 (A) sur la conductance stomatique à la vapeur d'eau (gs) est un estimateur au niveau foliaire du compromis fait par la plante entre l'accumulation de biomasse et sa consommation en eau. De nombreuses études ont révélé une forte diversité inter et intra-spécifique de ce trait intégré dans le temps dont l'origine est encore mal connue. Les travaux réalisés sur les variations journalières de A et gs ont jusqu'à maintenant révélé un rôle plus important de la diversité de gs dans la diversité de Wi. Une approche de modélisation inversée a permis de décomposer les variations de gs, observées lors de cinétiques journalières, sous la forme de paramètres décrivant les réponses stomatiques aux différentes variables microclimatiques. Comparé aux modèles décrivant les variations de gs en régime permanent, le développement d'un nouveau modèle dynamique a permis d'ajouter une dimension temporelle essentielle décrivant la réponse temporelle des stomates aux variations microclimatiques. La diversité des réponses temporelles des stomates détectée ne semble pas dépendre de leur densité ou de leur taille. Elle présente toutefois une asymétrie entre l'ouverture et la fermeture des stomates qui participe à la diversité des variations journalières de gs et impacte le bilan hydrique journalier au niveau du plant entier. Ainsi, on peut distinguer deux composantes aux variations journalières de Wi liées à gs : une composante temporelle due à la lente réponse des stomates et une autre composante due aux différences de perception des variations du microclimat / Intrinsic water use efficiency (Wi), defined as the ratio between net CO2 assimilation rate (A) and stomatal conductance to water vapour (gs), is a leaf level estimator of the trade-off between biomass accumulation and water loss at the plant level. A number of studies have shown a strong inter and intra-specific diversity, usually using a time integrated estimator of this trait. However, the origin of this diversity is not yet well known. Up to now, research on the daily variations of Wi have shown a stronger influence of gs on the diversity of Wi as compared to A. An inverse modelling approach has allowed partitioning the variations of gs observed during daily time-courses into parameters, which describe the stomatal responses to different microclimatic variables. Compared to steady-state gs models, the development of a new dynamic model of gs has allowed adding a necessary temporal dimension, which describes the temporal response of stomata to environmental variations. The observed diversity of these temporal stomatal responses was not related to stomatal density or size. The temporal responses of stomata were shown to be asymmetric between opening and closing, which impacts the observed diversity of gs during daily time courses as well as whole plant water relations. Overall these results suggest two components that determine the variations of Wi related to gs during daily time courses: one component due to the temporal response of stomata in itself, and one component which is due to differences in the sensing of microclimate variations

Light Detection and Ranging (LiDAR) is increasingly common in forestry applications, yet relatively little research has evaluated its use in quantifying carbon stocks in afforested bottomland hardwood forests. This study relates forest structural field measurements to metrics derived from low pulse density LiDAR data to assess the use of LiDAR in characterization of planted bottomland hardwood oak stands. Univariate and multivariate linear regressions were performed with field and LiDAR variables to determine relationships. The height-related field dependent variables average height, maximum height, and individual tree volume had the highest adjusted R-squared values of 0.5-0.6 (P<0.0001) for the univariate models and adjusted R-squared values of 0.70-0.79 for the multivariate models. These findings suggest that low-density LiDAR is capable of assessing forest structure and suggests that further research evaluating LiDAR quantification of bottomland hardwood carbon stocks is warranted.

Desired forest conditions, or DFCs, are recently created parameters which strive to create diverse stands of hardwoods of various species and age classes, along with varying densities and canopy gaps, through the use of uneven-aged silvicultural methods and repeated stand entries. Little research has been conducted to examine residual stand composition and hardwood regeneration after DFC installment. The objectives of this study were to characterize forest overstory and midstory conditions after DFC treatments, assess the natural regeneration, and to characterize available light in the treatment and control areas. Residual stand conditions after application of DFC harvest guidelines indicate that shade tolerant species will be the future occupants of the sites and oaks will diminish or disappear over time. This documented initial forest response to DFC treatments can be used by forest and wildlife habitat managers when assessing the potential outcomes of DFC management.

At Santa Margarita Ranch, California, oak mistletoe (Phoradendron villosum) parasitizes valley oak and blue oak but cannot be found growing on coast live oak despite its abundance and ability to parasitize coast live oak in other areas. It seems as though this species of mistletoe is specializing on certain host oak trees, but the mechanisms of this specialization are unknown. In order to investigate this pattern, we utilized a type of machine learning in GIS called supervised classification as well as a reciprocal transplant study in the field. The three species of oak trees were classified with 87% accuracy using drone imagery and 95% accuracy using open source NAIP imagery. This classification technique could be applied to the whole state of California as long as ground truth points for each species were collected. This could be extremely useful for large scale forest management projects and ecological questions. Unfortunately, the classifier was unsuccessful at distinguishing mistletoe from host and so the number of mistletoe on each host could not be quantified using this technique. The reciprocal transplant study involved collecting mistletoe fruit from individuals growing on each of the three hosts and experimentally applying them back onto all three hosts. This allowed us to test whether there are host races of mistletoe that specialize at growing on certain hosts. We found that seeds from each host origin germinated equally well regardless of where they were dispersed, and seeds survived best on coast live oak, regardless of where they originated from. Based on these results, there must be some mechanism, other than host races, that explains the lack of mistletoe on coast live oaks at Santa Margarita Ranch. Future projects should investigate whether evidence for host races can be found at a later stage of seedling development and the roll of bird dispersers in creating the pattern.

Selon la théorie de Jacobs (1988), l’expérience de dissociation est spécifique aux gens présentant une dépendance. D’autres auteurs, dont Bernstein et Putnam (1986), prétendent que la dissociation peut survenir dans la population normale. Le but de la individu pratique une activité qui le passionne. Pour ce faire, la dissociation est mesurée chez les trois groupes de personnes s’adonnant aux jeux de hasard et d’argent (N = 22), au cyclisme (N = 21) et à l’escalade (N = 20). Les participants reçoivent des questionnaires par la poste avec une enveloppe pré-affranchie. Par la suite, ils retournent cette enveloppe au chercheur. La Dissociative Expériences Scale (Bemstein & Putnam, 1986), adaptée pour la présente étude, a été utilisée pour mesurer la dissociation. Les résultats révèlent que les trois groupes ont rapporté de la dissociation. Le groupe de joueurs a obtenu des scores moyens de dissociation inférieurs à ceux des sportifs. Le concept du « flow » de Csikszentmihalyi (1975) permet certaines interprétations des résultats inattendus. Ces résultats suggèrent qu’il est possible de faire l’expérience de la dissociation lors de la pratique d’une activité qui nous passionne, et que cet état n’est pas spécifique aux gens qui éprouvent des problèmes de dépendances.