Resource survey of Looe Key National Marine Sanctuary, 1983

Forward: Looe Key National Marine Sanctuary (LKNMS) was designated in 1981 to protect and promote the study, teaching, and wise use of the resources of Looe Key Sanctuary (Plate A). In order to wisely manage this valuable resource, a quantitative resource inventory was funded by the Sanctuary Programs Division (SPD), Office of Ocean and Coastal Resource Management, National Oceanic and Atmospheric Administration (NOAA) in cooperation with the Southeast Fisheries Center, National Marine Fisheries Service, NOAA; the Cooperative Institute for Marine and Atmospheric Studies (CIMAS), University of Miami; the Fisher Island Laboratory, United States Geological Survey; and the St. Petersburg Laboratory, State of Florida Department of Natural Resources. This report is the result of this cooperative effort. The objective of this study was to quantitatively inventory selected resources of LKNMS in order to allow future monitoring of changes in the Sanctuary as a result of human or natural processes. This study, referred to as Phase I, gives a brief summary of past and present uses of the Sanctuary (Chapter 2); and describes general habitat types (Chapter 3), geology and sediment distribution (Chapter 4), coral abundance and distribution (Chapter 5), the growth history of the coral Montastraea annularis (Chapter 6), reef fish abundance and distribution (Chapter 7), and status of selected resources (Chapter 8). An interpretation of the results of the survey are provided for management consideration (Chapter 9). The results are expected to provide fundamental information for applied management, natural history interpretation, and scientific research. Numerous photographs and illustrations were used to supplement the report to make the material presented easier to comprehend (Plate B). We anticipate the information provided will be used by managers, naturalists, and the general public in addition to scientists. Unless otherwise indicated, all photographs were taken at Looe Key Reef by Dr. James A. Bohnsack. The top photograph in Plate 7.8 was taken by Michael C. Schmale. Illustrations were done by Jack Javech, NMFS. Field work was initiated in May 1983 and completed for the most part by October 1983 thanks to the cooperation of numerous people and organizations. In addition to the participating agencies and organizations we thank the Newfound Harbor Marine Institute and the Division of Parks and Recreation, State of Florida Department of Natural Resources for their logistical support. Special thanks goes to Billy Causey, the Sanctuary Manager, for his help, information, and comments. We thank in alphabetical order: Scott Bannerot, Margie Bastian, Bill Becker, Barbara Bohnsack, Grant Beardsley, John Halas, Raymond Hixon, Irene Hooper, Eric Lindblad, and Mike Schmale. We dedicate this effort to the memory of Ray Hixon who participated in the study and who loved Looe Key. (PDF contains 43 pages

Spin exchange and superconductivity in a t−J′−Vt-J'-V model for two-dimensional quarter-filled systems

The effect of antiferromagnetic spin fluctuations on two-dimensional quarter-filled systems is studied theoretically. An effective $t-J'-V$ model on a square lattice which accounts for checkerboard charge fluctuations and next-nearest-neighbors antiferromagnetic spin fluctuations is considered. From calculations based on large-N theory on this model it is found that the exchange interaction, $J'$, increases the attraction between electrons in the d$_{xy}$ channel only, so that both charge and spin fluctuations work cooperatively to produce d$_{xy}$ pairing.Comment: 9 pages, 6 figure

Social responsibility act against the manager and itsrelationship with the butterfly effect

Este trabajo tiene por objeto identificar la actuación del Gerente, frente a la responsabilidad social en su labor diaria dentro de las organizaciones; relacionando el efecto mariposa y las consecuencias que este puede ocasionar en el quehacer de la dirección, generando resultados positivos o negativos en el desarrollo organizacional. El principal aporte del trabajo es dejar la reflexión profesional del actuar; conformado por los apartes de Responsabilidad social y efecto mariposa.This work aims to identify the performance of the Manager, versus social responsibility in their daily work within organizations; relating the butterfly effect and the consequences that this may result in the work of leadership, generating positive or negative results in the organizational development. The main contribution of this paper is to let professional reflection act, made up of excerpts of Social Responsibility and the butterfly effect

Antiphase Synchronization in a Flagellar-Dominance Mutant of Chlamydomonas

Groups of beating flagella or cilia often synchronize so that neighboring filaments have identical frequencies and phases. A prime example is provided by the unicellular biflagellate Chlamydomonas reinhardtii, which typically displays synchronous in-phase beating in a low-Reynolds number version of breaststroke swimming. We report here the discovery that ptx1, a flagellar dominance mutant of C. reinhardtii, can exhibit synchronization in precise antiphase, as in the freestyle swimming stroke. Long-duration high-speed imaging shows that ptx1 flagella switch stochastically between in-phase and antiphase states, and that the latter has a distinct waveform and significantly higher frequency, both of which are strikingly similar to those found during phase slips that stochastically interrupt in-phase beating of the wildtype. Possible mechanisms underlying these observations are discussed.Comment: 5 pages, 4 figure

Association of Cannabis Use during Adolescence, Prefrontal CB1 Receptor Signaling, and Schizophrenia

The cannabinoid receptor 1 (CB1R) is the G-protein coupled receptor responsible for the majority of the endocannabinoid signaling in the human brain. It is widely distributed in the limbic system, basal ganglia, and cerebellum, which are areas responsible for cognition, memory, and motor control. Because of this widespread distribution, it is not surprising that drugs that activate CB1R have expected behavioral outcomes consistent with dysregulated signaling from these areas (e.g., memory loss, cognitive deficits, etc). In the context of this review, we present evidence for the role of CB1R signaling in the prefrontal cortex (PFC), an area involved in executive functions, with emphasis on the developmental regulation of CB1R signaling in the acquisition of mature PFC function. We further hypothesize how alterations in CB1R signaling specifically during adolescent maturation might confer liability to psychiatric disorders

OkCupid Data for Introductory Statistics and Data Science Courses

We present a data set consisting of user profile data for 59,946 San Francisco OkCupid users (a free online dating website) from June 2012. The data set includes typical user information, lifestyle variables, and text responses to 10 essay questions. We present four example analyses suitable for use in undergraduate introductory probability and statistics and data science courses that use R. The statistical and data science concepts covered include basic data visualization, exploratory data analysis, multivariate relationships, text analysis, and logistic regression for prediction

ELITISME ALGORITMA GENETIKA PADA FUNGSI NONLINEAR DUA PEUBAH

The evolutionary operator in the genetic algorithm (GA) does not guarantee that the quality of individuals from generation to generation is always good. Elitism maintains the preservation of the best individual traits from generation to generation by multiplying the best set of individuals. In this paper, it is determined the number of copies that need to be done on the best individual. Tests were carried out on five nonlinear functions with two variables and the result was that the best individual multiplication was able to provide the best solution.Operator evolusi dalam algoritma genetika (AG) tidak menjamin kualitas individu dari generasi ke generasi selalu baik. Elitisme menjaga pelestarian sifat-sifat individu terbaik dari generasi ke generasi dengan cara menggandakan sekumpulan individu terbaik. Pada tulisan ini ditentukan banyaknya penggandaan yang perlu dilakukan terhadap individu terbaik. Pengujian dilakukan terhadap lima fungsi nonlinear dua peubah dan dihasilkan satu penggandaan individu terbaik mampu memberikan solusi terbaik

Analisis Metode Cycle Crossover (Cx) Dan Metode Partial Mapped Crossover (Pmx) Pada Penyelesaian Kasus Traveling Salesman Problem (Tsp)

Travelling Salesman Problem (TSP) is a form of a problem in optimizing the search for the shortest route by passing through every city in exactly one time. The problem of searching the shortest route of a location can be solved by using many other optimizing algorithms. In this research, genetics algorithm was used by using two crossover methods namely cycle crossover and partial-mapped crossover. The parameters used were crossover probability and mutation probability, the sum of the city, maximum generation, the sum of the population and also threshold. In this research two testing models were used. In the first one, in order to get the generation and the best fitness it used the 80% consistency stopping criteria, and in the second one, in order to get the best testing time, it  used the 100 and 500 maximum generation stopping criteria. The result of the first test showed that PMX method is better than the CX one. This was shown through the 8 times of testing which the result was the best PMX generation was 104,0469 and the CX was 350,4563. The second test resulted that the best testing time of the PMX time was 1,1035 second and the CX method was 2,2374 second, thus, it can be concluded that the solution brought by the PMX method is considered better than the CX

Analisa Pengaruh Corporate Social Responsibility Terhadap Brand Image Jw Marriott Surabaya

Penelitian ini dilakukan untuk mengetahui apakah ketiga dimensi corporate social responsibility (CSR) memiliki pengaruh terhadap functional dan affective brand image JW Marriott Surabaya.Metode pengumpulan data yang digunakan adalah dengan kuesioner online. 132 kuesioner online telah disebarkan dan kemudian diolah menggunakan teknik analisa data PLS-SEM (Partial Least Square-Structural Equation Modeling). Hasil penelitian menunjukkan bahwa dimensi ekonomi dari CSR memiliki pengaruh positif dan signifikan terhadap functional brand image, sedangkan dimensi sosial dan lingkungan memiliki pengaruh positif dan signifikan terhadap affective brand image. This study was conducted to determine whether or not the three dimensions of CSR affect functional and affective brand image of JW Marriott Surabaya.The data for this study was collected by using online questionnaires. 132 online questionnaires were distributed and then analyzed by using PLS-SEM (Partial Least Square-Structural Equation Modeling). The data processing result showed that economics dimensions of CSR have positive and significant impact to functional brand image, while social and environment dimensions of CSR have positive and significant impact to affective brand image