461 research outputs found
Complete Genome Sequences of Lactobacillus Phages J-1 and PL-1
Lactobacillus phages J-1 and PL-1 were isolated during the 1960s from abnormal fermentations of Yakult. The genomes are almost identical, but PL-1 has a deletion in the genetic switch region and also differs in a gene coding for a putative tail protein.Fil: Dieterle, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina. University of Pittsburgh; Estados UnidosFil: Jacobs Sera, Deborah. University of Pittsburgh; Estados UnidosFil: Russel, Daniel. University of Pittsburgh; Estados UnidosFil: Hatfull, Graham. University of Pittsburgh; Estados UnidosFil: Piuri, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentin
ACORN’s Accelerated Income Redistribution Project: A Program Evaluation
Objective. This study evaluated the community organization ACORN’s efforts to increase the uptake of families claiming the Earned Income Tax Credit (EITC) through door-to-door canvassing and managing free tax preparation clinics in three pilot cities. Method. The mixed-method program evaluation included administrative record review; a telephone survey (N = 1063), and individual and focus group interviews. Results. During the 2003 tax year ACORN prepared taxes at no charge for 3,850 families who collected a total of $4 million in EITC and other tax credits. In two pilot cities ACORN led all other free sites in number of returns filed. Canvassing and word of mouth were the most productive marketing tools for the free tax preparation sites. Conclusions. Canvassing appears to be effective outreach in getting families to take advantage of free tax preparation. ACORN’s approach to combining services and direct action organizing appears to be a good fit and sustainable
Influence Diagram Use With Respect to Technology Planning and Investment
Influence diagrams are relatively simple, but powerful, tools for assessing the impact of choices or resource allocations on goals or requirements. They are very general and can be used on a wide range of problems. They can be used for any problem that has defined goals, a set of factors that influence the goals or the other factors, and a set of inputs. Influence diagrams show the relationship among a set of results and the attributes that influence them and the inputs that influence the attributes. If the results are goals or requirements of a program, then the influence diagram can be used to examine how the requirements are affected by changes to technology investment. This paper uses an example to show how to construct and interpret influence diagrams, how to assign weights to the inputs and attributes, how to assign weights to the transfer functions (influences), and how to calculate the resulting influences of the inputs on the results. A study is also presented as an example of how using influence diagrams can help in technology planning and investment. The Space Propulsion Synergy Team (SPST) used this technique to examine the impact of R&D spending on the Life Cycle Cost (LCC) of a space transportation system. The question addressed was the effect on the recurring and the non-recurring portions of LCC of the proportion of R&D resources spent to impact technology objectives versus the proportion spent to impact operational dependability objectives. The goals, attributes, and the inputs were established. All of the linkages (influences) were determined. The weighting of each of the attributes and each of the linkages was determined. Finally the inputs were varied and the impacts on the LCC determined and are presented. The paper discusses how each of these was accomplished both for credibility and as an example for future studies using influence diagrams for technology planning and investment planning
Validation of Slosh Model Parameters and Anti-Slosh Baffle Designs of Propellant Tanks by Using Lateral Slosh Testing
The slosh dynamics of propellant tanks can be represented by an equivalent mass-pendulum-dashpot mechanical model. The parameters of this equivalent model, identified as slosh mechanical model parameters, are slosh frequency, slosh mass, and pendulum hinge point location. They can be obtained by both analysis and testing for discrete fill levels. Anti-slosh baffles are usually needed in propellant tanks to control the movement of the fluid inside the tank. Lateral slosh testing, involving both random excitation testing and free-decay testing, are performed to validate the slosh mechanical model parameters and the damping added to the fluid by the anti-slosh baffles. Traditional modal analysis procedures were used to extract the parameters from the experimental data. Test setup of sub-scale tanks will be described. A comparison between experimental results and analysis will be presented
Etnologia Xinguana
Com a edição dos três livros resenhados aqui i, a etnologia brasileira se viu muito enriquecida, sobretudo no que diz respeito ao estudo das populações indígenas da região dos formadores do rio Xingu no Norte do Estado de Mato Grosso. Trata-se não somente de descrições etnográficas competentes e ricas em informações, mas também de análises sofisticadas por etnólogos experientes e sensíveis. Os três livros são baseados em pesquisas de campo realizadas no Parque Nacional do Xingu e principalmente entre os Aweti (Zarur) e os Kamaiurá (Agostinho e Junqueira), os dois pertencentes ao grupo das chamadas “tribos sociais” do alto Xingu; ambos falam idiomas do tronco tupi. Como todos os Xinguanos, hoje estão reduzidos ao status de “aldeia/tribo” provavelmente remanescentes de grupos tribais muito maiores que. migraram rumo à região que permaneceu isoladíssima durante séculos. Existe portanto uma sociedade xinguana multilíngüe formada por aldeias politicamente autônomas que exibem uma notável homogeneidade em matéria de práticas sociais, econômicas e cerimoniais e nas crenças místicas
Phylogenetic relationships and ecological speciation in the mistletoe Tristerix (Loranthaceae): the influence of pollinators, dispersers, and hosts
Phylogenies can provide valuable information on biotic and abiotic factors associated with speciation. We examined species relationships in Tristerix (Loranthaceae), a genus of 11 species with an Andean distribution from Colombia to Chile. A previous classification divided Tristerix into subgenera Tristerix (two species) and Metastachys (nine species). We tested this classification by generating a molecular phylogeny of the genus using nuclear ribosomal DNA ITS and chloroplast atpB-rbcL intergenic spacer and trnL-F regions. All partitions generally gave congruent trees, thus a combined analysis was conducted. Tristerix was composed of a northern clade (six species) and a southern clade (four species). Tristerix verticillatus and T. penduliflorus (Metastachys) were strongly supported as members of the (southern) subgenus Tristerix clade. Speciation appears to be correlated with the emergence of matorral and cloud forest biomes and is driven by interactions with pollinators and seed dispersers. Tristerix aphyllus is sister to T. corymbosus of the matorral, not to neighboring temperate forest populations, thus rendering the latter species paraphyletic. This ecological speciation event may have occurred in sympatry. Tristerix provides excellent examples of how, during the orography of the Andes, many dynamic and interacting ecological factors have influenced their speciation
Using Technical Performance Measures
All programs have requirements. For these requirements to be met, there must be a means of measurement. A Technical Performance Measure (TPM) is defined to produce a measured quantity that can be compared to the requirement. In practice, the TPM is often expressed as a maximum or minimum and a goal. Example TPMs for a rocket program are: vacuum or sea level specific impulse (lsp), weight, reliability (often expressed as a failure rate), schedule, operability (turn-around time), design and development cost, production cost, and operating cost. Program status is evaluated by comparing the TPMs against specified values of the requirements. During the program many design decisions are made and most of them affect some or all of the TPMs. Often, the same design decision changes some TPMs favorably while affecting other TPMs unfavorably. The problem then becomes how to compare the effects of a design decision on different TPMs. How much failure rate is one second of specific impulse worth? How many days of schedule is one pound of weight worth? In other words, how to compare dissimilar quantities in order to trade and manage the TPMs to meet all requirements. One method that has been used successfully and has a mathematical basis is Utility Analysis. Utility Analysis enables quantitative comparison among dissimilar attributes. It uses a mathematical model that maps decision maker preferences over the tradeable range of each attribute. It is capable of modeling both independent and dependent attributes. Utility Analysis is well supported in the literature on Decision Theory. It has been used at Pratt & Whitney Rocketdyne for internal programs and for contracted work such as the J-2X rocket engine program. This paper describes the construction of TPMs and describes Utility Analysis. It then discusses the use of TPMs in design trades and to manage margin during a program using Utility Analysis
Perancangan User Interface Aplikasi Hris (Human Resource Information System) Berbasis Mobile Pada Pt Grant Artha Dita
Program kerja magang dilakukan di PT Grant Artha Dita. PT Grant Artha Dita merupakan perusahaan swasta yang bergerak di bidang jasa rekondisi, jual beli, dan sewa alat berat. Jenis alat berat yang direkondisi, jual beli, dan sewa adalah Crawler Crane. Kerja magang yang dilakukan di PT Grant Artha Dita ditempatkan pada divisi IT (Information Technology) sebagai UI Designer. Tugas yang diberikan mahasiswa yaitu membuat rancangan desain user interface aplikasi HRIS (Human Resource Information System) yang berbasis mobile. Tujuan dari pembuatan rancangan HRIS (Human Resource Information System) ini untuk mempermudah pihak Manager HR dalam mengelola data karyawan dan Aplikasi tersebut memiliki manfaat lainnya untuk cepatnya proses komunikasi izin kehadiran atau cuti hingga proses pelaporan kinerja karyawan yang tidak menggunakan kertas serta waktu yang digunakan lebih sistematis. Laporan ini berisi penjelasan mengenai proses dan hasil mahasiswa selama melakukan kerja magang di PT Grant Artha Dita
Influencia de las tareas escolares en el proceso enseñanza – aprendizaje en los estudiantes del nivel secundaria de la Institución Educativa Fernando Carbajal de la localidad de Aguaytia en el 2013
Publicación a texto completo no autorizada por el autorDetermina la relación entre la planificación estratégica y su relación con la gestión educativa de de la Institución Educativa Fernando Carbajal de la localidad de Aguaytía –Ucayali 2013”. Las variables de estudio son dos planificación estratégica y gestión educativa. Se ha elaborado el marco teórico de los temas que son la base de la tesis, para luego elaborar un diagnóstico de cómo se encuentra la situación actual, de la Institución educativa y después elaborar un plan estratégico con sus respectivos pasos y objetivos a lograr, seguido del plan operativo, recursos y finalmente las conclusiones y recomendaciones que se ha podido especificar para el mejor rendimiento en cuanto a la mejora de la calidad en la institución educativa en estudio. El tipo de investigación fue descriptivo correlacional, bajo un diseño, no experimental de campo, la población estuvo constituida por 96 personas entre directivos, docentes, estudiantes, padres de familia; para la recolección de datos se utilizaron cuatro cuestionarios, para los directivos, docentes, estudiantes y padres de familia.Tesi
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