25 research outputs found
A comparison of EJB 3.0 and EJB 2.0
No full textBakalaura darbā „EJB 3.0 un EJB 2.0 salīdzinājums” ir apskatītas atšķirības starp EJB 2.0 un EJB 3.0 tehnoloģijām - uzlabojumi tehnoloģijas trešajā versijā, salīdzinot ar otro, kā arī atšķirības programmēšanas pieejās, kas tiek diktētas ar EJB 3.0, salīdzinot ar EJB 2.0, un atšķirības starp 2. un 3. EJB tehnoloģijas versiju komponentēm.
Darba praktiskajā daļā tiek apskatīta konkrētās Java EE lietotnes migrācija uz EJB 3.0 arhitektūru no EJB 2.0. Lietotne ir bankas karšu sistēmas sastāvdaļa, kas nodrošina programmatūras saskarni starp klienta sistēmām un vairākām Oracle datubāzēm, un ir ļoti svarīga uzņēmumam – tā nodrošina visu karšu sistēmas sastāvdaļu mijiedarbību. Šogad darba autors ir sācis strādāt pie šīs lietotnes migrācijas no EJB 2 uz EJB 3, komandā ar vēl diviem programmētājiem.The bachelor paper „A comparison of EJB 3.0 and EJB 2.0” describes the main differences between EJB 3.0 and 2.0 technologies – the improvements of the third version compared to the second, as well as the differences in the programming techniques of EJB 3.0 and EJB 2.0, and the differences in the components of EJB 3 and EJB 2.
The practical part of this work describes the migration of an existing Java EE application from EJB 2.0 to EJB 3.0 that the author is currently working on. The application is a message broker that ensures the exchange of data between the components of a bank card processing system and several Oracle databases. This year the author began the migration of this application from EJB 2 to EJB 3, in cooperation with two other programmer
Head First EJB
No full textWhat do Ford Financial, IBM, and Victoria\u27s Secret have in common? Enterprise JavaBeans (EJB). As the industry standard for platform-independent reusable business components, EJB has just become Sun Microsystem\u27s latest developer certification. Whether you want to be certifiable or just want to learn the technology inside and out, Head First EJB will get you there in the least painful way. And with the greatest understanding.You\u27ll learn not just what the technology is, but more importantly, why it is, and what it is and isn\u27t good for. You\u27ll learn tricks and tips for EJB development, along with tricks and tips for passing this latest, very challenging Sun Certified Business Component Developer (SCBCD) exam. You\u27ll learn how to think like a server. You\u27ll learn how to think like a bean. And because this is a Head First book, you\u27ll learn how to think about thinking.Co-author Kathy Sierra was one of Sun\u27s first employees to teach brave, early adopter customers how to use EJB. She has the scars. But besides dragging you deep into EJB technology, Kathy and Bert will see you through your certification exam, if you decide to go for it. And nobody knows the certification like they do - they\u27re co-developers of Sun\u27s actual exam!As the second book in the Head First series, Head First EJB follows up the number one best-selling Java book in the US, Head First Java. Find out why reviewers are calling it a revolution in learning tough technical topics, and why Sun Chairman and CEO Scott McNealy says, "Java technology is everywhere...if you develop software and haven\u27t learned Java, it\u27s definitely time to dive in "Head First."And with Head First book, you don\u27t even have to feel guilty about having fun while you\u27re learning; it\u27s all part of the learning theory. If the latest research in cognitive science, education, and neurobiology suggested that boring, dry, and excruciatingly painful was the best way to learn, we\u27d have done it. Thankfully, it\u27s been shown that your brain has a sense of style, a sense of humour, and a darn good sense of what it likes and dislikes.In Head First EJB, you\u27ll learn all about:
Component-based and role-based development
The architecture of EJB, distributed programming with RMI
Developing and Deploying an EJB application
The Client View of a Session and Entity bean
The Session Bean Lifecycle and Component Contract
The Entity bean Lifecycle and Component Contract
Container-managed Persistence (CMP)
Container-managed Relationships (CMR)
EJB-QL
Transactions
Security
EJB Exceptions
The Deployment Descriptor
The Enterprise Bean Environment in JNDI
Programming Restrictions and Portability
The book includes over 200 mock exam questions that match the tone, style, difficulty, and topics on the real SCBCD exam. See why Kathy and Bert are responsible for thousands of successful exam-passers--"The Sun certification exam was certainly no walk in the park, but Kathy\u27s material allowed me to not only pass the exam, but Ace it!"--Mary Whetsel, Sr. Technology Specialist, Application Strategy and Integration, The St. Paul Companies"Kathy Sierra and Bert Bates are two of the few people in the world who can make complicated things seem damn simple, and as if that isn\u27t enough, they can make boring things seem interesting."--Paul Wheaton, The Trail Boss, javaranch.com"Who better to write a Java study guide than Kathy Sierra, reigning queen of Java instruction? Kathy Sierra has done it again. Here is a study guide that almost guarantees you a certification!"--James Cubetta, Systems Engineer, SG
Valoración de servicio ecosistémico por captura de CO2 en el Ecoparque Jardín Botánico “Armando Dugand Gnecco” de Barranquilla, Colombia
No full textThis study examined the ecosystem service provided by the urban forest of the Armando Dugand Gnecco Botanical Garden Ecopark in Barranquilla, with a particular focus on the role of these spaces in climate change mitigation. The primary objective was to conduct an economic assessment of the CO₂ equivalent (CO₂eq) stored by this urban forest. A mixed-method approach was employed to characterize the species present in the study area and indirectly quantify their aboveground biomass and CO₂ equivalent (CO₂eq). The data were subsequently analyzed through statistical methods. The results demonstrated a total biomass of 432.80 tons, representing 794.18 tons of CO₂eq, with a valuation of COP 20,489,494.56 in Colombia's carbon market. These findings underscore the significance of conserving such natural habitats for climate change mitigation. It is concluded that adapting forest management strategies is crucial, with a particular emphasis on natural regeneration and the protection of native species with a high carbon sequestration capacity, such as Melicoccus bijugatus. Furthermore, the necessity of implementing policies that integrate the preservation of urban forests as an essential component of urban environmental planning is emphasized.Este estudio investigó el servicio ecosistémico de captura de CO2 del bosque urbano del Ecoparque Jardín Botánico “Armando Dugand Gnecco” de la ciudad de Barranquilla, enfocándose en la importancia de estos espacios en la mitigación del cambio climático. El objetivo principal fue valorar económicamente el CO2eq almacenado por este bosque urbano. Se empleó un enfoque mixto, caracterizando las especies presentes en el área de estudio y cuantificando con mediciones indirectas su biomasa aérea y CO2eq, evaluando los datos recolectados mediante análisis estadísticos. Los resultados revelan una biomasa total de 432,80 t, que almacena 794,18 t de CO₂eq, valoradas en COP 20.489.494,56 en el mercado de carbono colombiano. Estos hallazgos resaltan la importancia de conservar estos espacios naturales para la mitigación del cambio climático. Se concluye que es crucial adaptar las estrategias de manejo forestal, priorizando la regeneración natural y la protección de especies nativas con alta capacidad de captura de carbono, como Melicoccus bijugatus. Además, se enfatiza la necesidad de implementar políticas que integren la preservación de los bosques urbanos como parte integral en la planificación ambiental de las ciudades.Lista de tablas y figuras 12--Introducción 14--Planteamiento del problema 17--Justificación 20--Objetivos 23--Objetivo general 23--Objetivos específicos 23--Marco Teórico 24--Marco legal 24--Constitución política de Colombia 24--Política Nacional de Cambio Climático 24--Ley 1931 del Cambio Climático 24--Decreto 926 de 2017 25--Resolución 1447 de 2012 26--Resolución 000007 de 2024 26--Marco conceptual 27--Valoración económica 27--Valoración económica-monetaria 27--Servicios ecosistémicos 27--Servicios ecosistémicos de regulación 28--Captura de CO2 28--Ciclo del carbono 29--Mercado de carbono 29--Ecuaciones alométricas 30--Estado del arte 30--Metodología 34--Zona de estudio 34--Exploración y revisión bibliográfica 37--Fase de campo 37--Formas de vida 38--Cálculos de datos dasométricos e índices ecológicos 39--Biomasa 41--Cálculo de biomasa en el Ecoparque Jardín Botánico 41--Captura de biomasa carbono y CO2 equivalente 43--Valoración económica 43--Implementación de sistemas de información Geográfica (SIG) 44--Implementación de Análisis Estadístico 45--Resultados 46--Cobertura forestal en el EJB “Armando Dugand Gnecco de Barranquilla 46--Formas de vida por zonas 46--Índice de Valor de Importancia Familiar 50--Índice de Valor de Importancia 56--Biomasa aérea y CO2 equivalente 62--Biomasa aérea y CO2 equivalente en zonas del área de estudio 62--Biomasa aérea y CO2 equivalente por familias 65-- Biomasa aérea y CO2 equivalente por especies 73--Relación biomasa aérea vs. IVIF 84--Biomasa Total 87--Valoración económica 89--Análisis espacial de la biomasa aérea y el CO2eq capturado por los árboles del EJB Armando Dugand Gnecco 90--Discusión de resultados 95--Biodiversidad del EJB “Armando Dugand Gnecco 95--Análisis de la biomasa aérea en el EJB “Armando Dugand Gnecco 97--Relación de la biomasa aérea y el índice de valor de importancia familiar 99--Biomasa total del EJB “Armando Dugand Gnecco 100--CO2 equivalente y valoración económica 103--Análisis espacial de la biomasa aérea y CO2eq almacenado 105--Conclusiones 109--Limitaciones del estudio 111--Recomendaciones 112--Referencias 114--Anexos 130Administrador(a) AmbientalPregrad
Isolation and characterization of hydrocarbon producing green alga Botryococcus braunii from Indian freshwater bodies
No full textSamples of green colonial unicellular microalga
Botryococcus braunii were collected from Bear Shola
Falls at Kodaikanal (latitude 10.31 N and longitude
77.32 E), Tamil Nadu, India. Specimens were isolated,
cultured and examined for its hydrocarbon content,
morphological features and DNA structural
resemblance with the known strain to confirm its
identity. Inter simple sequence repeats (ISSR) finger
printing revealed strong genetic similarity among the
authentic strain (B. braunii N-836) and the Indian
isolated strain (B. braunii CFTRI- Bb1) from
*Corresponding author
Kodaikanal. The type of hydrocarbons produced by the
Kodaikanal isolates were analyzed and identified as
saturated hydrocarbons in the range of C21 to C33 by
GCMS. Tetracosane and octacosane were found as the
major components among the saturated hydrocarbons
produced by this alga, constituting 17.6% and 14.8%
respectively. Hydrocarbon content of the organism was
in the range of 13-18% of its dry biomass. The fat
content of the organism was found to be 22% (w/w).
Palmitic and oleic acids were found to be major fatty
acids produced by the alga. Lutein and β-carotene were
found to be the major carotenoids and constituted about
64.1% and 25.1% respectively of the total carotenoids.
Based on ISSR finger printing and hydrocarbon
analyses the new algal strain from Kodaikanal was
identified as Botryococcus braunii
Elicitation of peroxidase activity in genetically transformed root cultures of Beta vulgaris L.
No full textGenetically transformed roots of red beet produce
copious levels of peroxidase (POD) - a multifunctional
*Corresponding author
enzyme with a number of commercial applications. In
an effort to elicit the POD activity, the cultures were
treated with biotic elicitors such as dry cell powders of
microbial cultures (0.1-0.5% w/v) and the respective
culture filtrates (1-5% v/v). Similarly, abiotic elicitors,
particularly metal ions (2-8 folds of that present in the
nutrient medium), the plant hormone Thidiazuron (at
0.25-1 ppm) and other bio-molecules such as
Glutathione (at 0.5-10 mM) and Methyl jasmonate (at
20-100 μM) were used. It was observed that dry cell
powder of Candida versatilis significantly elicited the
enzyme activity (3.52-fold higher than the control)
followed by glutathione (3.44-fold) and Rhizophus
oligosporus (3.09-fold). Among abiotic elicitors,
thidiazuron, Mg and Ca salts elicited 2.49, 3.03 and 2.8
fold activities respectively. While most of the biotic
elicitors were effective when added on 15th day of
culture, the abiotic elicitors were effective when added
on 20th day. Combination of highly effective elicitors
indicated that glutathione (1 mM) and dry cell powder
of R. oligosporus caused a 4-fold enhancement in
enzyme activity, accounting for 10.9 x 106 U L-1. The
present study is the first report on red beet hairy roots
where a large number of elicitors have been
systematically screened and their probable
involvements in eliciting POD activities have been
discussed
Agrobacterium rhizogenes mediated genetic transformation resulting in hairy root formation is enhanced by ultrasonication and acetosyringone
No full textThe phytopathogenic bacteria Agrobacterium rhizogenes
genetically transforms plants by transferring a portion
of the resident Ri plasmid, the T-DNA to the plant.
Plant species differ in their temporal competence for
transformation. But various physical and chemical
*Corresponding author
methods are found to enhance transformation
frequency. Agrobacterium rhizogenes mediated
transformation efficiency was assessed under the
influence of sonication, calcium treatment,
acetosyringone and macerating enzymes in suitable
combinations in Nicotiana tabacum as a model system.
Manual wounding resulted in 21% transformation
frequency. Where as sonication resulted in 2.2 fold
increase, followed by sonication with CaCl2 treatment
resulted in 2.5 fold increase and sonication with
acetosyringone treatment resulted in 4.1 fold increase in
transformation frequency. However, sonication with
macerating enzyme treatment resulted in 1.5 to 5.25-
fold decrease in transformation frequency. Micro
wounding through sonication followed by
acetosyringone treatment enhanced transformation
frequency substantially. The results of this study may be
very useful in genetic manipulation of plants by
Agrobacterium rhizogenes mediated gene delivery to
higher plants, which are recalcitrant to A. tumefaciens
mediated genetic manipulation
Begonia leathermaniae O'Reilly & Kareg. 2022, nom. nov.
No full text6.31.Begonia leathermaniae O’Reilly & Kareg. <i>nom. nov.</i> Begonian 50: 146, fig. <i>s.n.</i> [2] (1983). <p> – <i>Begonia platanifolia</i> var. <i>acuminatissima</i> Kuntze, Revis. Gen. Pl. 3(3): 106 (1898). – Type: Bolivia [Cochabamba Department], Santa Rosa, [17°18′S, 65°33′W], 2000 m, 1–4 iv 1892, <i>C.E.O. Kuntze s.n.</i> (lectotype NY [NY00118642] <i>designated here</i>; isolectotypes B [B100243080, photograph F#20884], NY [NY00118643]).</p> <p> L.B. Smith & B.G. Schubert, Revista Univ. (Cuzco) 33(87): 84 (1944); R.C. Foster, Contr. Gray Herb. 184: 138 (1958); M.C. Tebbitt, Begonian 79: 99 (2012); D.C. Wasshausen <i>et al.</i> in P.M. JØrgensen <i>et al.</i> (eds), Cat. Bolivia, Monogr. Syst. Bot. Missouri Bot. Gard. 129: 385 (2013).</p> <p> <i>Distribution</i>. Endemic to Bolivia.</p> <p> <i>Nomenclatural notes</i>. In his protologue of <i>Begonia platanifolia</i> var. <i>acuminatissima</i> Kuntze (1898: 106), the author cited his own collections made at 2000 m elevation in Santa</p> <p> Rosa in Bolivia. Smith & Schubert (1944a) cited material of a matching but unnumbered collection in the New York Botanical Garden herbarium as the type. There are two matching sheets in the herbarium, so Smith and Schubert’s citation effected the first stage of lectotypification. O’Reilly & Karegeannes (1983) later cited the same material in New York as the type of this name, and their new name and combination <i>Begonia leathermaniae</i> O’Reilly & Karegeannes (1983: 146). We designate the sheet <i>Kuntze s.n.</i> (NY [NY00118642]) as the lectotype of <i>Begonia platanifolia</i> var. <i>acuminatissima</i> and <i>B. leathermaniae</i>. This sheet was chosen because it has a determination slip with this name written in Otto Kuntze’s handwriting.</p> <p> <i>Identification notes</i>. <i>Begonia leathermaniae</i> is a distinctive species with more than five sinuous, deeply cut lobes on its leaf laminae. It may be confused with the superficially similar <i>Begonia acerifolia</i> but can be distinguished by the ring of hairs at its petiole apex.</p>Published as part of <i>Moonlight, Peter & Fuentes, Alfredo F., 2022, AN UPDATED CHECKLIST AND KEY TO THE SPECIES OF BOLIVIAN BEGONIA, INCLUDING ONE NEW SPECIES, pp. 1-66 in Edinburgh Journal of Botany 79 (407)</i> on page 40, DOI: 10.24823/EJB.2022.407, <a href="http://zenodo.org/record/10553332">http://zenodo.org/record/10553332</a>
Integrating legacy mainframe systems: architectural issues and solutions
No full textFor more than 30 years, mainframe computers have been the backbone of computing systems throughout the world. Even today it is estimated that some 80% of the worlds' data is held on such machines. However, new business requirements and pressure from evolving technologies, such as the Internet is pushing these existing systems to their limits and they are reaching breaking point. The Banking and Financial Sectors in particular have been relying on mainframes for the longest time to do their business and as a result it is they that feel these pressures the most.
In recent years there have been various solutions for enabling a re-engineering of these legacy systems. It quickly became clear that to completely rewrite them was not possible so various integration strategies emerged.
Out of these new integration strategies, the CORBA standard by the Object Management Group emerged as the strongest, providing a standards based solution that enabled the mainframe applications become a peer in a distributed computing environment.
However, the requirements did not stop there. The mainframe systems were reliable, secure, scalable and fast, so any integration strategy had to ensure that the new distributed systems did not lose any of these benefits. Various patterns or general solutions to the problem of meeting these requirements have arisen and this research looks at applying some of these patterns to mainframe based CORBA applications.
The purpose of this research is to examine some of the issues involved with making mainframebased legacy applications inter-operate with newer Object Oriented Technologies
Begonia fulgens Lemoine
No full text<i>Begonia fulgens</i> Lemoine, Hort. Lemoine 119: IV (1891). – Type: Unknown. <p> V. Lemoine, Hort. Lemoine 127: 82 (1894); L.B. Smith & B.G. Schubert, Revista Univ. (Cuzco) 33(87): 78 (1944); R.C. Foster, Contr. Gray Herb. 184: 137 (1958); D.C. Wasshausen <i>et al.</i> in P.M. JØrgensen <i>et al.</i> (eds), Cat. Bolivia, Monogr. Syst. Bot. Missouri Bot. Gard. 129: 385 (2013).</p> <p> <i>Notes</i>. <i>Begonia fulgens</i> Lemoine was included in Smith and Schubert’s revision of the Begoniaceae for the <i>Flora of Bolivia</i> (Smith & Schubert, 1944a) and the first checklist of Bolivian <i>Begonia</i> (Foster, 1958). Wasshausen <i>et al.</i> (2013) excluded the species from their treatment, stating that these earlier records were based on incorrectly identified material. Smith & Schubert (1944a), however, only cited the protologue of <i>Begonia fulgens</i> (Lemoine, 1891) and its citation in the <i>Index Kewensis</i> (1905: pp. 493), whereas Foster only cited the protologue. Neither citation can therefore be a misapplied name.</p> <p> The protologue of <i>Begonia fulgens</i> describes it as a caulescent, tuberous species with four tepals on the staminate flower and five (or six) tepals on the pistillate flowers. All aspects of the description are consistent with Tebbitt’s concept of <i>Begonia veitchii</i> Hook.f. var. <i>veitchii</i> (Tebbitt, 2020) except the occasional six tepals on the pistillate flower. Tebbitt refrained from including <i>Begonia fulgens</i> in the synonymy of <i>B. veitchii</i> var. <i>veitchii</i> and suggested the six tepals may indicate it is of hybrid origin. Recent photographs from Sandia Province, Puno Region, Peru do, however, show some individuals of <i>Begonia veitchii</i> var. <i>veitchii</i> with six tepals on the pistillate flowers (Josh Allen, unpublished).</p> <p> An illustration published in Wiener illustrirte Garten-Zeitung (without author, 1893: fig. 9) may show a plant from the original illustration of <i>B. fulgens</i>, and clearly shows a plant with five tepals on the pistillate flower. The origins of this plant are, however, unclear. The text accompanying the illustration states that the plant was exhibited in Lyon, and it is unclear whether this is true of the original introduction of <i>Begonia fulgens</i>. The text also mentions hybridisation, but it is unclear whether the authors are referring to the illustrated plant as a hybrid or a general increase in the number of hybridised tuberous begonias. The claimed size of the flowers of this plant reaches 12–15 cm across, which may indicate that the plant is a hybrid or it could equally be the result of cultivating a plant in optimal conditions. A further possibility is a nursery exaggerating the size of the blooms of their latest product.</p> <p> We strongly suspect that the original description of <i>Begonia fulgens</i> refers to the same species as <i>B. veitchii</i> but are unable to conclusively demonstrate this. There is no known type of the name and little prospect of one arising, the original horticultural descriptions are ambiguous, and it is unclear whether later citations (e.g. without author, 1893) refer to the same introduction as the protologue. We suggest that future authors reject this name.</p>Published as part of <i>Moonlight, Peter & Fuentes, Alfredo F., 2022, AN UPDATED CHECKLIST AND KEY TO THE SPECIES OF BOLIVIAN BEGONIA, INCLUDING ONE NEW SPECIES, pp. 1-66 in Edinburgh Journal of Botany 79 (407)</i> on page 54, DOI: 10.24823/EJB.2022.407, <a href="http://zenodo.org/record/10553332">http://zenodo.org/record/10553332</a>
Plankton reach new heights in effort to avoid predators
No full textAuthor Posting. © The Author(s), 2012. This is the author's version of the work. It is posted here by permission of The Royal Society for personal use, not for redistribution. The definitive version was published in Proceedings of the Royal Society B: Biological Sciences 279 (2012): 2786-2792, doi:10.1098/rspb.2012.0163.The marine environment associated with the air-water interface (neuston) provides an
important food source to pelagic organisms where subsurface prey is limited. However,
studies on predator-prey interactions within this environment are lacking. Copepods are
known to produce strong escape jumps in response to predators but must contend with a
low Reynolds number environment where viscous forces limit escape distance. All previous
work on copepods interaction with predators has focused on a liquid environment. Here,
we describe a novel anti-predator behavior in two neustonic copepod species where
individuals frequently exit the water surface and travel many times their own body length
through air to avoid predators. Using both field recordings with natural predators and
high speed laboratory recordings we obtain detailed kinematics of this behavior, and
estimate energetic cost associated with this behavior. We demonstrate that despite losing
up to 88% of their initial kinetic energy, copepods which break the water surface travel
significantly further than escapes underwater and successfully exit the perceptive field of
the predator. This behavior provides an effective defense mechanism against subsurface
feeding visual predators and the results provide insight into trophic interactions within the
neustonic environment.This work was supported by grants from the National Science Foundation, USA to EJB (NSF
OCE-0452159), to HJ (NSF OCE-1129496)
