Effective Action Approach to Heavy Particle Contributions and Wilsonian Renormalization

We work in theories with both light and heavy particles. A method to obtain an effective low energy action with respect to the light particle is presented. Thanks to Wilsonian renormalization, we obtain effective actions with finite number of local operators describing possible non-decoupling effects of heavy particles. The validity of the method is first checked by explicit computation of a specific observable, the $\rho$ - parameter, in the framework of effective theory. Then we discuss a procedure to obtain the full effective action with respect to light particles in a typical example of the system of (t, b) doublet, gauge bosons and Higgs doublet, regarding only t quark as a heavy particle.Comment: 13 pages, LaTeX209 file, using axodraw.st

Nutrient cross-feeding in the microbial world.

The stability and function of a microbial community depends on nutritional interactions among community members such as the cross-feeding of essential small molecules synthesized by a subset of the population. In this review, we describe examples of microbe-microbe and microbe-host cofactor cross-feeding, a type of interaction that influences the forms of metabolism carried out within a community. Cofactor cross-feeding can contribute to both the health and nutrition of a host organism, the virulence and persistence of pathogens, and the composition and function of environmental communities. By examining the impact of shared cofactors on microbes from pure culture to natural communities, we stand to gain a better understanding of the interactions that link microbes together, which may ultimately be a key to developing strategies for manipulating microbial communities with human health, agricultural, and environmental implications

Maybe She\u27s Born with It: Analyzing theories of Beauty From Biology, Society and the Media

How does one define physical beauty? Artists, poets, photographers, authors and directors are constantly trying to capture it. Modeling agents, when asked to define it, were unable to answer - after some thought, their final conclusion was you know it when you see it. Beauty, it seems, is an experience more than an object. This thesis discusses the origins and perceptions of beauty from an interdisciplinary perspective. Discussed are its characteristics, definitions, standards and judgments and why beauty matters

Cofactor Selectivity in Methylmalonyl Coenzyme A Mutase, a Model Cobamide-Dependent Enzyme.

Cobamides, a uniquely diverse family of enzyme cofactors related to vitamin B12, are produced exclusively by bacteria and archaea but used in all domains of life. While it is widely accepted that cobamide-dependent organisms require specific cobamides for their metabolism, the biochemical mechanisms that make cobamides functionally distinct are largely unknown. Here, we examine the effects of cobamide structural variation on a model cobamide-dependent enzyme, methylmalonyl coenzyme A (CoA) mutase (MCM). The in vitro binding affinity of MCM for cobamides can be dramatically influenced by small changes in the structure of the lower ligand of the cobamide, and binding selectivity differs between bacterial orthologs of MCM. In contrast, variations in the lower ligand have minor effects on MCM catalysis. Bacterial growth assays demonstrate that cobamide requirements of MCM in vitro largely correlate with in vivo cobamide dependence. This result underscores the importance of enzyme selectivity in the cobamide-dependent physiology of bacteria.IMPORTANCE Cobamides, including vitamin B12, are enzyme cofactors used by organisms in all domains of life. Cobamides are structurally diverse, and microbial growth and metabolism vary based on cobamide structure. Understanding cobamide preference in microorganisms is important given that cobamides are widely used and appear to mediate microbial interactions in host-associated and aquatic environments. Until now, the biochemical basis for cobamide preferences was largely unknown. In this study, we analyzed the effects of the structural diversity of cobamides on a model cobamide-dependent enzyme, methylmalonyl-CoA mutase (MCM). We found that very small changes in cobamide structure could dramatically affect the binding affinity of cobamides to MCM. Strikingly, cobamide-dependent growth of a model bacterium, Sinorhizobium meliloti, largely correlated with the cofactor binding selectivity of S. meliloti MCM, emphasizing the importance of cobamide-dependent enzyme selectivity in bacterial growth and cobamide-mediated microbial interactions

The Theological-Eschatological Implications of Name Michael in Jude

The pastoral epistle of Jude is shrouded with rich theological significance, in spite of its shortness. Theological themes like order of salvation, faith, mission, worship, judgment, great controversy, second coming, and the end of the world, and others are interwoven in the fabric of Jude. It means that Jude starts with protology and ends with climactic and cosmic victorious eschatology, particularly the resurrection of the righteous.             The sudden appearance of Michael, the Archangel heightens the conflict in Jude. Scholars from the different camps admit Jude 9 where Michael appears in contending the devil over the body of Moses, is the most perplexing text in the entire epistle. Jesus Christ eschatological name is: Michael. The name is so significant particularly in the conflict of Moses’ resurrection to glory. Satan by all means struggled to prevent him to be resurrected and taken from his territory, for he claimed Moses belonged to his kingdom because he was a sinner.             In epistle of Jude the great controversy does not end of the temporal life, the physical death but even extended until the day of resurrection. Whenever, Michael is referred to in the Bible, are all in the contexts of intense violence, war, death, hopelessness and resurrection and triumph. Michael is the heavenly warrior who defends victoriously for His people who will end the great controversy in grandest victory, is indeed the highlight of Jude’s eschatology.     Keywords: Michael; devil; Moses; contending; conflict; struggle; apostasy; the great controvers

Information behavior inside brazilian’s information science dissertations and thesis from 2007-2012: Literature review

Estudos sobre comportamento informacional têm atraído o interesse de diversas áreas do conhecimento, entre elas a Ciência da Informação. Realizou-se uma pesquisa documental exaustiva em âmbito brasileiro, das teses e dissertações apresentadas nos onze Programas de Pós-Graduação de Ciência da Informação, defendidas no período de 2007 a abril de 2012. Foi identificado um total de 465 dissertações e 157 teses publicadas no respectivo período. Ao aplicar a escolha dos seguintes termos no título e palavras-chave: Comportamento Informacional; Comportamento de Busca da Informação; Necessidade de Informação; Estudo de Usuários; Busca da Informação; Acesso à informação; Uso da Informação; Necessidade, Busca, Acesso e Uso da Informação; Sense-Making; Tomada de decisão; e, Recuperação da Informação obteve-se para a análise 88 dissertações e 17 teses. Os termos com maior ocorrência no título foram: Tomada de Decisão (11), Comportamento Informacional (10) e Recuperação da Informação (10). Cabe salientar que, nas palavras-chave a Recuperação da Informação (49) teve a maior ocorrência entre os termos, seguida de Estudo de Usuários (19), Comportamento informacional (15), Necessidade de Informação (12), e Tomada de Decisão (10). A média de 19 documentos publicados por ano entre 2007 e 2010. O estudo identificou os autores, os orientadores e gerou um grafo no qual se percebe o posicionamento central de seis orientadores: Ricardo Barbosa (UFMG), Mônica Erichsen Nassif Borges (UFMG), Murilo Bastos da Cunha (UNB), Emir José Suaiden (UNB), Helen de Castro Silva Casarin (UNESP), Isa Maria Freire (UFF / UFPB). A temática comportamento informacional aparece com maior ocorrência nas instituições: UFMG, UNB, UNESP e UFPB. A pesquisa demonstrou a continuidade de estudos na área e apontaram que aproximadamente 1/5 das dissertações e 1/10 das teses brasileiras abrangem.Studies of information behavior have attracted interest from several areas of knowledge, including information science. We conducted an exhaustive documentary research into dissertations and thesis published in eleven brazilian Post-Graduate Programs in Information Science, from 2007 to april 2012. Were identified a total of 465 thesis and 157 thesis published in the respective period. By applying the choice of the following terms in the title and keywords: Informational Behavior; Information Seeking-Behavior; Information Needs; User Studies; Information Seeking; Information Access; Use of Information; Needs, Seeking, Access and Use of Information; Sense-Making; Decision Making; and Information Retrieval was obtained 88 thesis and 17 dissertations for analysis. The most occurred terms in the title were: Decision Making (11), Information Behavior (10) and Information Retrieval (10). It should be noted that in the keywords Information Retrieval (49) had the highest frequency of occurrence between terms, followed by User Studies (19), Information Behavior (15), Information Needs (12), Decision Making (10). The average between 2007 and 2010 was 19 published papers per year. The study identified the published work advisors and generate a graph which shows the central position of six advisors: Ricardo Barbosa (UFMG), Monica Nassif Erichsen Borges (UFMG), Murilo Bastos da Cunha (UNB), Emir Jose Suaiden ( UNB), Helen de Castro Silva Casarin (UNESP), Isa Maria Freire (UFF / UFPB). The information behavior theme appears with more frequently in the follow institutions: UFMG, UNB, UNESP and UFPB. The survey showed the continuity studies in this area and pointed out that approximately one fifth of thesis and 1/10 of dissertations studies cover this area in Brazil

Penggunaan Model Pembelajaran Matematika Realistik pada Mahasiswa

The purpose of this study was to determine student learning outcomes in algebraic subjects in the University of Flores Mathematics Education Study Program using realistic mathematics learning device models. This type of research is quantitative research with quasi-experimental design, pretest and posttest group, the sample is all fourth semester students of mathematics education program FKIP Flores University in 2018/2019 academic year. Data obtained using student learning outcomes, data processed using ANOVA statistical tests. The results obtained by the value of Fcount 77.13 is greater than Ftable 4.10 at dk 37. Calculation of student learning outcomes in the experimental group after using realistic mathematics learning models, seen student learning outcomes increased significantly. Conclusion, learning mathematics using realistic models can be used as an alternative to improving student learning outcomes in algebraic structure subjects. Keywords: Learning Outcomes, Learning Models, Realistic Mathematics, Algebraic Structure &nbsp

「子どもとジェンダー」研究の方法論的展開

記念企画「子ども社会研究の課題と展望