University of Maine

About: University of Maine is a education organization based out in Orono, Maine, United States. It is known for research contribution in the topics: Population & Ice sheet. The organization has 8637 authors who have published 16932 publications receiving 590124 citations. The organization is also known as: University of Maine at Orono.

Changes in Social Networks of Women and Men Following Divorce: A Review

Abstract: A theoretical critique and review is presented concerning the character and consequences of changes in the social networks of spouses following separation and divorce. For men, cultural traditions that prescribe the duties and obligations of husbands are thought to encourage the development of personal friendships while simultaneously encouraging independence, thus insulating men from the possible benefits of social support following divorce. For women, the duties and obligations of wives as they are traditionally defined encourage women to accept responsibility for “kinkeeping” during and after marriage while simultaneously discouraging bonds with friends. These circumstances are thought to isolate women from the unique benefits of personal friendship and ensure networks that are dominated by kin, which typically are high in exchanges of both social support and interference. Important distinctions are drawn between the character of relationships with kin and friends, as well as between the concepts of so...

Retinohypothalamic tract in the female albino rat: a study using horseradish peroxidase conjugated to cholera toxin.

Abstract: There are several anatomically and functionally distinct retinofugal pathways, one of which is the retinohypothalamic tract (RHT). In this study, horseradish peroxidase conjugated to cholera toxin (CT-HRP), a sensitive neural tracer, was employed to describe the RHT in the female albino rat. Following uniocular injection of CT-HRP, both medial and lateral components of the RHT were evident. The medial component swept caudally into and through the suprachiasmatic nucleus (SCN) and dorsally to the subparaventricular zone. Terminal label was seen in the medial preoptic region, peri-SCN area, retrochiasmatic area, periventricular nucleus, anterior and central parts of the anterior hypothalamic area, and the subparaventricular zone. In contrast to the more focused and symmetrical medial component, the lateral component was diffuse with light terminal label in the lateral preoptic region, olfactory tubercle, lateral hypothalamus, supraoptic nucleus, and medial and posteroventral medial amygdaloid nuclei. The striking exception to this diffuse pattern of the lateral component was an extremely dense columnar terminal field over the dorsal border of the supraoptic nucleus. Whereas the intensity of label in terminal fields of the medial component was often similar on the sides ipsilateral and contralateral to the injection, the lateral component was consistently asymmetrical with greater labeling on the side contralateral to the injection. In addition, a light projection arrived at several thalamic nuclei by returning toward the thalamus from the tectal or pretectal areas via stria medullaris, and thus was not a part of the RHT. Implications for circadian as well as noncircadian photobiologic effects are discussed.

Children's Expression of Negative Affect: Reasons and Methods.

Abstract: This study examined the influence of socialization figures (mother, father, best friend, medium friend), emotion type (anger, sadness, physical pain ), age, and gender on 66 2nd and 71 5th-grade children's reasons for and methods of affect expression. Children reported expressing sadness in order to receive support, expressing pain because they perceived it was uncontrollable, and regulating anger due to negative consequences. Girls reported using verbal means to communicate emotion, whereas boys cited mild aggressive methods. Younger children indicated expressing emotion to receive assistance because they lack regulation skills, and to adhere to norms. Children expressed emotion in passive ways to fathers more than peers, and mothers were deemed by younger children as most accepting of displays of anger.

RGB-NDVI colour composites for visualizing forest change dynamics

Abstract: The study presents a simple and logical technique to display and quantify forest change using three dates of satellite imagery The normalized difference vegetation index (NDVI) was computed for each date of imagery to define high and low vegetation biomass Color composites were generated by combining each date of NDVI with either the red, green, or blue (RGB) image planes in an image display monitor Harvest and regeneration areas were quantified by applying a modified parallelepiped classification creating an RGB-NDVI image with 27 classes that were grouped into nine major forest change categories Aerial photographs and stand history maps are compared with the forest changes indicated by the RGB-NDVI image The utility of the RGB-NDVI technique for supporting forest inventories and updating forest resource information systems are presented and discussed