Top PDF BARIERRS AND SOLUTIONS IN THE KNOWLEDGE FLOW PERCOLATION MODEL

BARIERRS AND SOLUTIONS IN THE KNOWLEDGE FLOW PERCOLATION MODEL

BARIERRS AND SOLUTIONS IN THE KNOWLEDGE FLOW PERCOLATION MODEL

The concept of "wave of democratization" automatically requires an assessment of the democratic state in which the analyzed subject is found, respectively the world economy or a region of the globe. The major changes in the level of democracy are related to the concept of wave, introduced in the general debate of ideas by the former U.S. Secretary of State and Harvard professor, Samuel Huntington, in his The Third Wave, published in 1991. Because of the author's authority in this subject and of the excellent analysis made in the paper, the term ‘wave of democracy’ has rapidly spread out, generating, later, large debates and some controversies. In fact, Huntington felt the need that, through this new theory, to refute an opinion released by its famous professional rival, but otherwise friend, Francis Fukuyama, who, two years before, in 1989, had published a very interesting essay “The End of History?”, whose central idea was that socio-cultural evolution of mankind ended with the collapse of the last totalitarian regimes and that the mankind was witnessing the permanent establishment of the final form of government, the democracy. Such a thesis was somehow irritating for a Secretary of State, advocate of the political realism, who had an important word to say in the evolution of U.S. foreign policy during the last 30 years and who analyzed, in all its publishing, the changes and the democratic crises that have accompanied the evolution in the second half of the twentieth century. Huntington's view was that the global politics is continuously changing and it is fragmented by historical periods, characterized by certain dominant trends and also by isolated phenomena that could represent the seeds of a change. The conflict cannot disappear as long as there are nations which have to share limited resources, but it can develop new forms. If, by the first half of the twentieth century, it was motivated by the territorial claims, after the Second World War it appeared a new type of conflict, an ideological one, equal or even more dangerous due to the dimensions of the forces involved. After this stage, in fact quite short on a historical scale, the conflict quickly took another form, cultural-religious one. This idea was loved by Huntington and, in 1993, he published it in an article in Foreign Affaires, called The Clash of Civilizations. Later, in 1996, he developed the idea in a book at least as famous as the Fukuyama's, called The Clash of Civilizations and the Remaking of World Order.
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UM MODELO PARA GERÊNCIA DE CONHECIMENTO EM PROJETO DE SOFTWARE BASEADO NO FLUXO DE CONHECIMENTO

UM MODELO PARA GERÊNCIA DE CONHECIMENTO EM PROJETO DE SOFTWARE BASEADO NO FLUXO DE CONHECIMENTO

This work presents the KFM, Knowledge Flow Model, a knowledge flow model to application and use in systems development and research environments. For the construction of this model, concepts of knowledge management in software environments are applied. Such concepts have as objectives the knowledge use improvement in research and development’s environments. The concepts and examples of knowledge management application also are treated in this work. After integration of these concepts, a model is proposed to be used and tested in the software development area . This work also presents a specific application system to accompaniment of development software projects.
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Fibrillar organization in tendons: A pattern revealed by percolation characteristics of the respective geometric network

Fibrillar organization in tendons: A pattern revealed by percolation characteristics of the respective geometric network

In this work we delineate a network approach for studying the tendon organization (system composed of interconnected fibrils) that could contribute to a better understanding of its biomechanical responses. Relative neighborhood networks between collagen fibrils are here erected as proxies for the underlying collagen network. This type of objects constitutes an appropriate candidate to make mathematically tractable the collagen network. The links (edges) between the discrete units (nodes) of this network are derived from the relationships of spatial proximity between fibrils. However, the spatial gap between fibrils connected by proximity is occupied by the amorphous matrix and should be also considered a relevant component for the functionality of the entire system. Amorphous matrix is assumed to be the physical substrate over which the information can flow across the nodes of the network. In dealing with the term transference of information, we adopt the meaning implicit to the information theory (Shannon, 1948) that involves the transmission of data or any state change in a system. This notion liberates us from considering the ECM network as a theoretical model uniquely associated to the context of force transmission. The model of ECM network is useful to address the topic of functional integrity. One way to do that is to evaluate if information can propagate throughout the structure of the network, or equivalently to study its characteristics of percolation. Percolation theory may contribute to the understanding of the information flow such as force transmission from the beginning of the tensile activity (tendon activated by a contractile force) until the resulting response (movement of skeletal pieces).
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Braz. J. Chem. Eng.  vol.30 número3

Braz. J. Chem. Eng. vol.30 número3

in the presence of a gravitational field. Dapra and Scarpi (2007) developed the perturbation solution for a Williamson fluid injected into a rock fracture. Peristaltic flow of a Williamson fluid has been discussed by Nadeem et al. (2010). Vasudev et al. (2010) studied the peristaltic pumping of a Williamson fluid through a porous medium considering heat transfer. Cramer et al. (1968) showed that this model fits the experimental data of polymer solutions and particle suspensions better than other models. For pseudoplastic fluids the power law model predicts that the apparent/effective viscosity should decrease indefinitely with increasing shear rate, which means infinite viscosity at rest and zero viscosity as the shear rate approaches infinity. A real fluid has both minimum and maximum effective viscosities depending upon the molecular structure of the fluid. In the Williamson fluid model, both the minimum ( μ ∞ ) and maximum viscosities ( μ 0 ) are considered.
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and flow modeling of tard percolation in the Cariri valley  Northeast Brazil art hfrischkorn

and flow modeling of tard percolation in the Cariri valley Northeast Brazil art hfrischkorn

Both models have no difference in halite and K-feldspar dissolution, because these are the only donor phases for Cl  , and K + . Neither model involves albite precipitation/dis- solution, indicating no substantial quantities of this mineral along the water flow path. The greatest difference between the two models is in clay precipitation. Result #1 shows Na- montmorillonite precipitation with relatively low-anorthite dissolution, whereas #2 sup- poses Ca-montmorillonite precipitation with anorthite dissolution 12 times higher than #1 to compensate for the decrease in Ca 2+ . The amount of calcite precipitation with dolomite and gypsum dissolution shows that dolomite and gypsum incongruent dissolution are important and common geochemical processes in this evolution. It is not possible to choose between these two sets of results in the absence of detailed information on mineralogy and water flow paths. In fact, a linear combination of the two models may be the best choice.
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Solutions of the Polchinski ERG equation in the O(N) scalar model

Solutions of the Polchinski ERG equation in the O(N) scalar model

intrinsic way. In the present article we will address these and other related issues. We found it convenient to study them in the context of O(N) scalar theories. The reason is that for N = ∞ a general solution of the lowest order ERG flow equation is known analytically though indirectly [29, 40, 41]. Namely, the inverse function φ = φ(f, t) can be obtained in a closed analytical form. This will be enough for our purpose. We will study various properties of the corresponding FP solutions for N = ∞ and relate them to the analogous properties of FP solutions for finite N, where only numerical or approximate analytical results are available. In particular, we will analyze the appearance of the critical curves η n (γ) of regular solutions for
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The Chemical Percolation Devolatilization Model Applied to the Devolatilization of Coal in High Intensity Acoustic Fields

The Chemical Percolation Devolatilization Model Applied to the Devolatilization of Coal in High Intensity Acoustic Fields

The chemical percolation devolatilization model (CPD) was extended for the prediction of drying and devolatilization of coal particles in high intensity acoustic fields found in Rijke tube reactors. The acoustic oscillations enhance the heat and mass transfer processes in the fuel bed as well as in the freeboard, above the grate. The results from simulations in a Rijke tube combustor have shown an increase in the rate of water evaporation and thermal degradation of the particles. The devolatilization model, based on chemical percolation, applied in pulsating regime allowed the dynamic prediction on the yields of CO, CO 2 , CH 4 , H 2 O, other light gases as well as tar which are important on ignition and stabilization of flames. The model predicted the quantity and form of nitrogen containing species generated during devolatilization, for which knowledge is strategically indispensable for reducing pollutant emissions (NO x ) in flames under acoustic excitation .
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Dynamic behavior of cluster observables for the 2d Ising model

Dynamic behavior of cluster observables for the 2d Ising model

above. We compare the behaviors of the two quantities as functions of t and find that, whereas the magnetic order pa- rameter shows a power-law increase with t, the data for the percolation order parameter Ω are well fitted by a sum of ex- ponentials of the (inverse of the) time t. At the end of Section III we also comment on the short-time behavior of another definition for the percolation order parameter, based on the largest cluster instead of the spanning (percolating) cluster.

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A Reasoning Method on Knowledge Base of Computational Objects and Designing a System for Automatically Solving Plane Geometry Problems

A Reasoning Method on Knowledge Base of Computational Objects and Designing a System for Automatically Solving Plane Geometry Problems

Models and methods for knowledge representation play an important role in designing knowledge base systems and expert systems. Nowadays there are many various knowledge models, such as semantic network, neural network, conceptual graph, etc (see [1,2,3,4]). Nonetheless, these models only can represent an aspect of practical knowledge. A domain of real knowledge is generally diverse and contains simple-to-complex concepts. In [21], another model for knowledge representation, called Computation Network, has been proposed and utilised for practical applications. Furthermore, a modern approach for knowledge representation and knowledge base system designing is using “ontology” (see [6, 9, 20]). In particular, the Knowledge Base of Computatiational Objects (KBCO) model proposed in [14, 16, 22] is very useful and suitable for representing knowledge in the complex domains of practical applications, such as Analytical Geometry, Plane Geometry, Physics, Chemistry, etc.
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Impact of changes in land use in the flow of the Pará River Basin, MG

Impact of changes in land use in the flow of the Pará River Basin, MG

The meteorological database was provided by Instituto Nacional de Meteorologia – INMET . These stations, identified as A536, A535, A524, 83570, 83533, 83635, 83637, are located within the geographic area of influence of the watershed. The runoff data were obtained from station 40450001 (Porto Pará) administered by the Agência Nacional de Águas (Figure 1). The topographic base of the area was obtained from an ASTER GDEM altitude image (digital elevation model), with a 30 m spatial resolution. For preparation of the map of current use and land cover, methods for classification and pattern recognition in orbital images from Landsat  5  TM sensors, acquired on 07/19/2012, were applied, provided by Instituto Nacional de Pesquisas Espaciais (INPE). To cover the entire
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Strategies and Problems in the Promotion of Taal as a Culture and Religious Destination

Strategies and Problems in the Promotion of Taal as a Culture and Religious Destination

V. CONCLUSIONS AND RECOMMENDATIONS The commonly visited tourist attractions in Taal were Escuela Pia, White House and Basilica of St. Martins of Tours. Historical Sites were considered the most effective promotional strategies used in Taal. Presence of Beggars was the common problem encountered by the tourists of Taal. The Municipality of Taal may continually preserve Taal’s historical sites. The Department of Tourism of Taal may provide a sustainable program to promote Taal through its historical and pilgrimage sites. CITHM may also support existing activities promoting Taal as tourist destination. Future researchers may conduct similar study but using other variables. It is a great opportunity for the students to have c urriculum which is supported by activities which are in the forms of actual
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Braz. J. Phys.  vol.33 número3

Braz. J. Phys. vol.33 número3

The gelation transition transforms a solution of polymeric molecules, the sol, which is essentially a viscous fluid, into an elastic solid. This happens when the bond formation be- tween different molecules is induced and it is phenomeno- logically characterized by the divergence of the viscosity coefficient in the sol and by the appearence of an elastic response in the gel phase. This corresponds to the consti- tution inside the sol of a macroscopic polymeric structure [1], which characterizes the gel phase. This polymeriza- tion process leading to the formation of an interconnected stress-bearing network in the system is then responsible on one hand for the divergence of the viscosity coefficient η and on the other hand for the growing of a non-zero elas- tic modulus Y . The critical growth of the connectivity can be straightforwardly interpreted by means of a percolation transition, which starting from the work of Flory and Stock- mayer [1, 2, 3] is practically considered as the basic model for gelation transition. Depending on the particular system the gelation can be observed by lowering the temperature, or as function of time or else of the monomer concentration in the sol. In any case close to the gelation transition the vis- cosity coefficient grows with a power law behaviour charac- terized by a critical exponent k. The onset of the elastic re- sponse in the system corresponds to a power law increasing of the elastic modulus described by a critical exponent f .
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Analysis Of Lean Accounting JIT And Balance Scorecard In The Companys Lean Manufacturing

Analysis Of Lean Accounting JIT And Balance Scorecard In The Companys Lean Manufacturing

manufacturing can be exemplified make instant noodles for 5 people in the restaurant, but chef only cook once and split the 5 then the waiter gives the customer. Everyone has the desire to taste like spicy, salty, sweet it is in the table provided the spice seasoning. So here chef do cook only once even though tastes different flavor. Or the other exemplified use the concept of lean manufacturing is, if the someone want to buy and pant in the supermarket for their necessary. Only pants so it’s very waste for their, from time, fuel, pay parking place, cost, reduce energy. If their in the supermarket. They should buy other necessary such as clothes, jacket, sock foot, style t shirt, neck. And other exemplified from lean concept like is if there’s parents have four daughter want to study in the same town. The parent should rent home for their daughter better then their daughter rent room in the boarding house. So it’s reduce finance to pay a room. And also the other benefit, if the parent want to visit their daughter can meet once time in one place without wasting time. So they can keep each other to study, until the can achievement target to be bachelor. For seeking the concept lean manufacturing some expert view from dimension same thing but there’re different main point such as:
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SOCIAL ECONOMY – A FORM OF INCLUSION AND OF ''REACTIVATING'' OF LABOR IN THE CONTEXT OF THE CURRENT CRISIS

SOCIAL ECONOMY – A FORM OF INCLUSION AND OF ''REACTIVATING'' OF LABOR IN THE CONTEXT OF THE CURRENT CRISIS

Despite the exigencies of the European Union regarding the active inclusion , which means to ensure labor markets for those looking for a job and for the disadvantaged persons , in several countries Greece, Ţortugal, Romania, etc. some passive policies were promoted, resource consuming, outside the system of social economy, that have aggravated the local crises and have extended the global crisis of the current society European Commission , p. .

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J. Braz. Soc. Mech. Sci. & Eng.  vol.34 número3

J. Braz. Soc. Mech. Sci. & Eng. vol.34 número3

The centreline velocity profile showing the model predictions and the experimental data for the 5.29% v/v bentonite suspension for a flow rate of 3.27 l/s at a 2 degree slope is shown in Fig. 11. Again the agreement between the two seems to be good. However, the velocity gradients close to the flume surface (0 – 0.01 m) do not agree very well. This is due to the combination of the transducer installation method (see Fig. 4) and high velocity gradient of the Bingham profile. There is an increase in velocity at the surface interface due to influence of the cavity, which distorts the measured velocity profile. Note that this distortion did not occur during the CMC tests, which suggests that the cavities have a more significant influence on plug flows where the velocity gradients are high. It is also interesting to note that for the 5.29% w/w bentonite suspension the deviation of the predicted from the measured profile with distance from the centreline (see Fig. 12) is not so sudden as for CMC (see Fig. 9). This could be ascribed to the formation of the plug which extends towards the side wall. The sheet flow model still holds to about 20 mm from the side wall. The aspect ratio in this instance is 1:21, which is better than the 1:10 set as a limit for the sheet flow by Coussot (1994). In Fig. 13 the progression of velocity
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Numerical Analysis of Fluid-Structure Interaction between Wind Flow and Trees

Numerical Analysis of Fluid-Structure Interaction between Wind Flow and Trees

During storm condition, the pressure difference between the windward and leeward sides are much larger than during gentle breeze because of a more prominent recirculating region which produces a negative flow field. This implies that the wind forces exerted on the tree are larger and as a consequence the trunks experiences higher deformation and stresses, increasing the likelihood of structural failure. Windthrow by trunk damage is expected to occur for storm conditions as the maximum equivalent stresses due to bending exceed the rupture modulus of the material.
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Joint Analysis of the Discount Factor and Payoff Parameters in Dynamic Discrete Choice Games

Joint Analysis of the Discount Factor and Payoff Parameters in Dynamic Discrete Choice Games

contains aggregate prices and quantities for all the US regional markets from the US Geological Survey’s Mineral Yearbook. The other contains the capacities of plants and plant-level information that Ryan has collected for the Portland cement industry in the United States from 1980 to 1998. Data on plants includes the name of the …rm that owns the plant, the location of the plant, the number of kilns in the plant and kiln characteristics. Following Ryan we assume that the plant capacity equals the sum of the capacity of all kilns in the plant and that di¤erent plants are owned by di¤erent …rms. We observe that plants’ names and ownerships change frequently. This can be due to either mergers and acquisitions or to simple changes in the company name. We do not treat these changes as entry/exit movements. We check each observation in the sample using the kiln information (fuel type, process type, year of installation and plant location) installed in the plant. If a plant changes its name but keeps the same kiln characteristics, we assume that the name change is not associated to any entry/exit movement. This way of preparing the data enables us to match most of the summary statistics of plant-level data in Table 2 of Ryan. Any discrepancies most likely can be attributed to the way we treat the change in plants’ names, which may di¤er to Ryan in a
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A pulsatile flow model for in vitro quantitative evaluation of prosthetic valve regurgitation

A pulsatile flow model for in vitro quantitative evaluation of prosthetic valve regurgitation

A pulsatile pressure-flow model was developed for in vitro quantita- tive color Doppler flow mapping studies of valvular regurgitation. The flow through the system was generated by a piston which was driven by stepper motors controlled by a computer. The piston was connected to acrylic chambers designed to simulate “ventricular” and “atrial” heart chambers. Inside the “ventricular” chamber, a prosthetic heart valve was placed at the inflow connection with the “atrial” chamber while another prosthetic valve was positioned at the outflow connec- tion with flexible tubes, elastic balloons and a reservoir arranged to mimic the peripheral circulation. The flow model was filled with a 0.25% corn starch/water suspension to improve Doppler imaging. A continuous flow pump transferred the liquid from the peripheral reservoir to another one connected to the “atrial” chamber. The dimensions of the flow model were designed to permit adequate imaging by Doppler echocardiography. Acoustic windows allowed placement of transducers distal and perpendicular to the valves, so that the ultrasound beam could be positioned parallel to the valvular flow. Strain-gauge and electromagnetic transducers were used for measure- ments of pressure and flow in different segments of the system. The flow model was also designed to fit different sizes and types of prosthetic valves. This pulsatile flow model was able to generate pressure and flow in the physiological human range, with independent adjustment of pulse duration and rate as well as of stroke volume. This model mimics flow profiles observed in patients with regurgitant prosthetic valves.
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Individual ethics and knowledge management: Arising conflicts

Individual ethics and knowledge management: Arising conflicts

The quest for obtaining knowledge and perceive its nature is not original. This effort is old as the history of human thought. According to Plato, knowledge is justified true belief. In his work Protagoras, Plato pleads: “knowledge is the food of the soul” (Jowett, 1899). However, other philosophers’ as Descartes or Kant have made also attempts to define it. Todd for example, describes knowledge as “human knowing in all its forms … competencies, experiences, expertise’s, skills, talents, wisdom, thoughts, ideas, intuitions, commitments, innovations, practices and imaginations … the stuff of the human mind. Knowledge resides in the user and not in the collection.” (Todd, 2001: 5). For Mattison (2000), knowledge comes from experience that we have reflected on, made sense of and tested. Knowledge is a kind of sticky residue insight our minds. Therefore, knowledge is gained through experience, and not just any (raw) experience. It is usually experience that has been tested, reflected upon and judged against other experiences that are also available. It also comes about as a result of thinking your way through a problem and what we remember when we first started taking that route of though. And finally, Williams (2003) describes the paradoxical “biological” nature of knowledge as both a thing and a flow.
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Patients’ Knowledge about Causes and Solutions of Infertility in South West Nigeria

Patients’ Knowledge about Causes and Solutions of Infertility in South West Nigeria

Findings of hypothesis 1 may be due to the fact that, these sets of respondents are selected from the hospitals/fertility centres, and as such they are aware of the information giving to them by their reproductive health /fertility specialists. This finding corroborates with the statements of Larsen, Olaitan, Rutstein &Shah, Ahmad, Madaen, Haj, Nejad & Koushavar, and Olaitan et al, that many are aware of the fertility problem that can emanate from anatomical abnormalities, such as uterine fibroids, distorted uterus and so on, as they can even cause miscarriage and infertility in women 3, 4, 10, 11, 12 . Although, it is contrary to the findings of Isaksson & Titinen that 5% of the couple suffering from infertility are ignorant about the correct timing of sex, because many of the partners are week end husbands or wives 6 . Even though, majority of the respondents have favourable views and are knowledgeable about low libido (65.7%), poor semen analysis (65.9%), distorted uterus (65.9%), RTIs (81%), uterine fibroids (62%), anovulation (68.7%), damaged fallopian tubes (70%) and previous use of IUCDs for family planning (65.3%) as causes of infertility, yet, they have limited knowledge that working in too hot weather/ wearing of tight underclothing and use of psychoactive drugs can cause infertility with percentage favourable views of 33.7% and 38.5% respectively (see Table2).
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