San Francisco State University

About: San Francisco State University is a education organization based out in San Francisco, California, United States. It is known for research contribution in the topics: Population & Planet. The organization has 5669 authors who have published 11433 publications receiving 408075 citations. The organization is also known as: San Francisco State & San Francisco State Normal School.

The mediators of experiential purchases: Determining the impact of psychological needs satisfaction and social comparison

Abstract: Once basic needs are satisfied, the relation between income and subjective well-being is small, and materialism leads to diminished well-being. This study attempts to determine: (1) whether experiential purchases, as opposed to materialistic purchases, are likely to increase well-being and (2) whether these increases are likely to be due to increased satisfaction of psychological needs and/or decreased social comparison. Participants indicated that experiential purchases represented money better spent, brought more happiness to themselves, and brought more happiness to others. Path models demonstrated that experiential purchases had an indirect effect on one's well-being through two independent paths: (1) increased relatedness, which then led to increased vitality, and (2) decreased social comparison. Discussion focuses on why vitality and social comparison affect well-being.

Gangstas, Wankstas, and Ridas: defining, developing, and supporting effective teachers in urban schools

Abstract: Drawing from three years of research in the classrooms of four highly effective elementary and secondary teachers in South Los Angeles, this article considers theories of teaching in urban contexts by examining effective practices in urban classrooms. It outlines an original framework of five indicators of effective teaching in urban schools and uses examples from practice to illustrate those indicators and their relationship to increased achievement. Finally, it discusses possibilities for better preparation and development of teachers in these areas of their practice.

N2 fixation by unicellular bacterioplankton from the Atlantic and Pacific oceans: phylogeny and in situ rates.

Abstract: N2-fixing proteobacteria (alpha and gamma) and unicellular cyanobacteria are common in both the tropical North Atlantic and Pacific oceans. In near-surface waters proteobacterial nifH transcripts were present during both night and day while unicellular cyanobacterial nifH transcripts were present during the nighttime only, suggesting separation of N2 fixation and photosynthesis by unicellular cyanobacteria. Phylogenetic relationships among unicellular cyanobacteria from both oceans were determined after sequencing of a conserved region of 16S ribosomal DNA (rDNA) of cyanobacteria, and results showed that they clustered together, regardless of the ocean of origin. However, sequencing of nifH transcripts of unicellular cyanobacteria from both oceans showed that they clustered separately. This suggests that unicellular cyanobacteria from the tropical North Atlantic and subtropical North Pacific share a common ancestry (16S rDNA) and that potential unicellular N2 fixers have diverged (nifH). N2 fixation rates for unicellular bacterioplankton (including small cyanobacteria) from both oceans were determined in situ according to the acetylene reduction and 15N2 protocols. The results showed that rates of fixation by bacterioplankton can be almost as high as those of fixation by the colonial N2-fixing marine cyanobacteria Trichodesmium spp. in the tropical North Atlantic but that rates are much lower in the subtropical North Pacific.

Relationship characteristics and motivations behind agreements among gay male couples: differences by agreement type and couple serostatus.

Abstract: Gay men in relationships are often overlooked in HIV prevention efforts, yet many engage in sexual behaviors that increase their HIV risk and some seroconvert as a result. While different aspects of gay male relationships have been studied, such as sexual agreements, relationship characteristics, and couple serostatus, little research combines these elements to examine HIV risk for this population. The present study recruited 566 gay male couples from the San Francisco Bay Area to study their sexual agreements, motivations behind making agreements, and other relationship characteristics, such as agreement investment, relationship satisfaction, intimacy, and communication. Participants rated their level of concurrence with a set of reasons for making their agreements. They were also measured on relationship characteristics using standard instruments. Analyses were conducted by agreement type (monogamous, open, and discrepant) and couple serostatus (concordant negative, concordant positive, and discordant). A majority reported explicitly discussing their agreements and nearly equal numbers reported being in monogamous and open relationships. A small number (8%) reported discrepant agreements. Across all agreement type and serostatus groups, HIV prevention as a motivator for agreements fell behind every motivator oriented toward relationship-based factors. Only concordant negative couples endorsed HIV and STD prevention among their top motivators for making an agreement. Mean scores on several relationship characteristics varied significantly. Couples with monogamous agreements had higher scores on most relationship characteristics, although there was no difference in relationship satisfaction between couples with monogamous and open agreements. Scores for concordant positive couples were distinctly lower compared to concordant negative and discordant couples. Agreements, the motivations behind them, and the relationship characteristics associated with them are an important part of gay male relationships. When examined by agreement type and couple serostatus, important differences emerge that must be taken into account to improve the effectiveness of future HIV prevention efforts with gay couples.