Miracle-dz/UniFAR-FTUs huggingface dataset:
Simulating Crystallographic Pore Growth on III-V Semiconductors

In this work, the growth of crystallographically oriented pores in III-V semiconductors has been investigated. Based on new and previous results a model for pore growth has been developed, which is mainly based on a stochastic branching probability of the pores. The stochastic nature of the model allowed to implement it as the core for Monte-Carlo-Simulations of pore growth. The simulations were able to reproduce the main features of crystallographically oriented pores, like uniform pore growth in ntype InP or the formation of domains on n-type GaAs and InP. The model is also capable of reproducing the logarithmic growth law for the pore depth, as well as the pore density oscillations with depth, as recently found.
The immunocytochemical localization of transgenically-expressed proteins in plants

A range of tissue preparation and immunocytochemical localization techniques were assessed for their possible application in the study of the transgenic expression of the legA gene, encoding Pisum sativum legumin in transformed Nicotiana plumbagimfolia seeds. Immuno-gold localization methods were developed at the EM level, using sections of L.R. White embedded seeds. An endogenous legumin-like protein in the Nicotiana plumbagtmfolia seeds was recognised by antibodies raised against Pisum legumin. In order to determine the temporal and spatial distribution of legA encoded legumin in the transformed seeds, it was necessary to develop a suitable means of discriminating between Pisum legumin and the endogenous protein. Cross reacting antibodies were precipitated out of a polyclonal antiserum by pre treatment with an extract from non-transformed Nicotiana plumbaginifolia seeds and the remaining antibodies were then used to achieve specific localization of Pisum legumin. A method was also developed for the localization of the endogenous legumin-like protein in the non-transformed seeds, using a non-pretreated antibody preparation. Both proteins were detected in the protein bodies of transformed Nicotiana plumbaginifolia seeds, but their temporal and spatial distributions were different. The endogenous protein was abundant in all seed tissues, whenever and wherever there were protein bodies present. Pisum legumin was present at a detectable level in the older developing and mature transformed seeds, principally in the cotyledons and adjacent embryo axis and to a lesser extent in the endosperm. These results clearly demonstrate that the legA gene is being deferentially expressed, in a manner which is different to the expression of the endogenous legumin-like protein. This suggests that its differential expression is under the control of the non-coding regions of the legA gene, rather than being determined by endogenous Nicotiana control elements. The significance of these results is discussed in relation to those achieved in other transgenic situations. The use-fullness of the methods and their potential future applications are considered.
Air permeability of deposited snow

A precise air permeameter with a double-vessel sample holder of the ZwikkerKosten type, a portable bridge-type air permeameter and a kerosene permeameter were devised for measuring the fluid permeability B of natural deposited snow. The filter velocity of fluid in the measurements, i. e. , the volumetric flow rate through unit area perpendicular to the mean flow line, was up to 1.0 cm/s for either air or kerosene. The experiments conducted in this range of filter velocity confirmed the validity of Darsy's law. The values of the specific permeability Bo, namely the fluid permeability multiplied by the viscosity of fluid that were obtained with the air permeameters agreed fairly well to those values obtained with the kerosene permeameter. Accordingly the flow of fluid subjected to the measurements could be looked upon as macroscopically laminar and viscous. Measured values of the air permeability of natural deposited snow dispersed from 3 X 10to 50x10-2 cm'sl /dyne'cm3 , whereby they showed that air permeability does not clearly depend on snow density, which ranged from 0.06 to 0.51 g/cm3 • It was shown, however, that the specific permeability Eo of fine-grained compact snow could be satisfactorily represented by a simple formula, Eo = 0.077 d:· exp [-7.SP;l, where do is the "mean grain size" in cm and P; the specific gravity of snow. This formula is reasonable, inasmuch as the dimension of Bo is the square of length. The formula gave a qualitative interpretation in terms of grain size and density of snow as to changes in the air permeability of a particular snow layer in the course of its metamorphosis. * Contributions No. 1053 from the Institute of Low Temperature Science. ~tl'lifill*~'liFjIt~ij'[ill11lx
Constraint Trajectory Surface-Hopping Molecular Dynamics Simulation of the Photoisomerization of Stilbene

Combining trajectory surface hopping (TSH) method with constraint molecular dynamics, we have extended TSH method from full to flexible dimensional potential energy surfaces. Classical trajectories are carried out in Cartesian coordinates with constraints in internal coordinates, while nonadiabatic switching probabilities are calculated separately in free internal coordinates by Landau-Zener and Zhu-Nakamura formulas along the seam. Two-dimensional potential energy surfaces of ground and excited states are constructed analytically in terms of torsion angle and one dihedral angle around the central ethylenic C=C bond, and the other internal coordinates are all fixed at configuration of the conical intersection. At this conical intersection, the branching ratio from the present simulation is 48 : 52 (33 : 67) initially starting from trans(cis)-Stilbene in comparison with experimental value 50 : 50. Quantum yield for trans-to-cis isomerization is estimated as 49% in very good agreement with experimental value of 55%, while quantum yield for cis-to-trans isomerization is estimated as 47% in comparison with experimental value of 35%.
Active-set strategy in Powell's method for optimization without derivatives

In this article we present an algorithm for solving bound constrained optimization problems without derivatives based on Powell's method [38] for derivative-free optimization. First we consider the unconstrained optimization problem. At each iteration a quadratic interpolation model of the objective function is constructed around the current iterate and this model is minimized to obtain a new trial point. The whole process is embedded within a trust-region framework. Our algorithm uses infinity norm instead of the Euclidean norm and we solve a box constrained quadratic subproblem using an active-set strategy to explore faces of the box. Therefore, a bound constrained optimization algorithm is easily extended. We compare our im_ plementation with NEWUOA and BOBYQA, Powell's algorithms for unconstrained and bound constrained derivative free optimization respectively. Numerical experiments show that, in general, our algorithm require less functional evaluations than Powell's algorithms.
Classification of forest vegetation on the south slope of Vitosha Mountain, Western Bulgaria.

In the last decades numerous studies have presented vegetation classifications. Some of them highly subjective, relying entirely on qualitative data, others more objective, based on quantitative information, susceptible to statistical tests. On that ground, vegetation organization was viewed either as composed of recognizable community units or as a continuum with gradually changing composition, provoking continuous debate. This study represents numerical classification of forest vegetation on the south slope of Vitosha Mountain, Western Bulgaria. We hypothesized that described community types will not hold the statistical test for their consistence. Stratified sampling procedure and nested 0.1 ha sampling plots were used. Obtained field samples were classified with TWINSPAN clustering method. Resulting groups were tested for statistical difference for the most important environmental gradients and vegetation variables. 114 field samples were collected and grouped in nine forest community types. Six of them are dominated by Fagus sylvatica L. Two are coniferous forests (plantations), where Pinus nigra Arn. and Pinus sylvestris L. are most abundant. The last one is mixed oak forest. Beech forests predominate at higher elevation, in more mesic habitats and on steeper slopes. Most of the beech communities have significantly higher canopy closure and lower shrub and herb strata cover. Mixed oak forest and coniferous communities are richest in almost all life and growth forms. They are more susceptible to invasion, because of their proximity to populated areas and severe disturbance regime, therefore richer on alien species. Mixed oak forest and coniferous communities also have significantly higher species richness per 0.1 ha and 1 m2, as well as higher alpha diversity and evenness. All forest communities in the studied region are poor in rare, protected and endemic species. Despite the significant differences between some of the Fagus sylvatica communities and the mixed forests, they are generally unrecognizable statistically from each other. Therefore, the vegetation of the studied area is considered as having continuum organization. Numerical classification, relying on quantitative and statistically testable data, will objectify and simplify vegetation understanding and improve future management activities.
Cost Control and Accountability for Effective Budget Implementation

Because of the growing complexity of business and business problems and because of the movement toward decentralization in large enterprise, increased attention is being given to better planning and control techniques. Consequently, the use of sound budgeting techniques is becoming more prevalent. Again, corporate restructuring has resulted in a treno toward placing the responsibility for budgeting at higher levels in the organization allowing for a stronger cost control and accountability measures. Consequently, the paper advocate the use of cost control method to monitor, evaluate, and ultimately enhance the efficiency of specific business areas such as departments, divisions, or product lines. This will require frequent information (accounting or otherwise) about operations in order to plan for the future, to control present activities, and to evaluate the past performance of managers, employees, and related business segments. The paper therefore recommend that cost control be exercised continuously to flag potential problem so that crisis may be prevented
COMO DESENVOLVER O COMPORTAMENTO EMPREENDEDOR? A EAD - UNIUBE FORMANDO MAIS QUE PROFISISONAIS

As universidades, produtoras e difusoras de conhecimento, constituem-se em importantes espaços para práticas de desenvolvimento empreendedor. Frente a este cenário, os cursos da Universidade de Uberaba se preocupam em formar profissionais preparados para lidar com situações que exigem aprendizado contínuo, criatividade, inovação e empreendedorismo em todas as áreas e dimensões da vida humana, individual e coletiva. O processo de empreendedorismo, inovação e transferência de conhecimento é dinâmico, complexo e interativo, pois deve existir um fluxo de informações entre os agentes envolvidos no processo de produção do conhecimento. Este é caracterizado como uma contínua atividade de pesquisa, composta e estruturada pelas forças econômicas, pelo conhecimento tecnológico e pela demanda dos consumidores (BALESTRIN; VARGAS, 2004). Neste sentido, socializamos por meio deste artigo a experiência da disciplina Comportamento Empreendedor oferecidas em 15 cursos da Universidade de Uberaba que propõe uma atividade prática em que o aluno é estimulado a elaborar um Plano Estratégico Pessoal. Nesta atividade os alunos desenvolvem as onze etapas de um PEP compreendendo uma importante ferramenta que o auxiliará no planejamento, organização, acompanhamento e avaliação de seus objetivos e ações.
Derivations in semiprime rings and Banach algebras

Let R be a 2-torsion free semiprime ring with extended centroid C, U the Utumi quotient ring of R and m;n > 0 are xed integers. We show that if R admits derivation d such that b((d(x);x)n;(y;d(y))m) = 0 for all x;y 2 R where 0 b 2 R, then there exists a central idempotent element e of U such that eU is commutative ring and d induce a zero derivation on (1 e)U. We also obtain some related result in case R is a non-commutative Banach algebra and d continuous or spectrally bounded. c
An optimized dynamic frame slotted ALOHA anti-collision algorithm

The dynamic frame slot ALOHA (DFSA) algorithm is a typical anti-collision. For the shortcomings of DFSA algorithm, this paper presents an improved algorithm - IDFSA. On the one hand, IDFSA algorithm to improve the label estimation algorithm, so as to achieve dynamic adjustment. On the other hand, through the analysis of mathematics, the new grouping of labels is improved, and the phenomenon of landslide is improved. The simulation results show that the throughput of IDFSA algorithm is higher, and the total operations time is less. RFID (radio frequency identification, RFID) is widely used in logistics, identification, anti-theft and other fields. A traditional RFID system mainly includes two parts: the reader and the tag. In the case of the number of tags more dense, the reader must use the anti-collision to identify the individual tags. So, anti collision algorithm is very important in multi label application field. Tag anti-collision protocols (1) can be categorized into two groups: probabilistic anti-collision methods and deterministic anti-collision methods. The probabilistic anti-collision methods are Aloha-based protocols (2) such as pure Aloha protocol, Slotted ALOHA (SA) protocol, Framed Slotted ALOHA (FSA) protocol and Dynamic Framed Slotted ALOHA (DFSA) (3, 4) protocol. In this paper, an improved dynamic frame slot ALOHA (IDFSA) algorithm is proposed. 2. Related work Frame slotted ALOHA algorithm will be a plurality of time slots set as a frame, for a fixed frame length, when the tag number is less than the length of the frame appears waste the time slot, when the frame length is less than or equal to the number of tags conflict too frequent . In view of this situation, according to the number of tags in the reader range, dynamic adjustment of the next frame length, by a decrease or increase the length of the frame, you can solve the slot waste and tag identification time increased, this method is called dynamic frame slotted ALOHA (DFSA). The analysis of DFSA algorithm shows that the throughput of the system is mainly determined by the estimation of the number of tags and the adjustment of the frame length. The estimation of the number of tags plays a key role in the performance of the algorithm. At present, there are three kinds of label estimation algorithms, Vogt, Schoute and Lowbound
To fund or not to fund: assessment of the potential impact of a regional promotion campaign

This paper develops a framework for assessing the potential economic impact of a regional promotion campaign combining contingent valuation methods with a partial displacement equilibrium model. The proposed approach is applied to the evaluation of the potential economic impact of the locally grown campaign in South Carolina. Results reveal that the first season of the promotion campaign increased consumer willingness to pay for produce by 3.4%. The change in consumer preferences and the corresponding shift in demand increased producer surplus by $3.09 million. This economic benefit, combined with the 2007 promotion campaign investment, resulted in a benefit-cost ratio of 6.18.
A new prescription for viscosity in smoothed particle hydrodynamics.

Smoothed particle hydrodynamics (SPH) is a particle method for modelling hydrodynamical flows that has been successfully applied to a wide range of astrophysical problems. One of its main weaknesses, however, has been its inability to treat viscosity in a rigorous manner. We present a new method that can be used to solve the Navier-Stokes equation for an arbitrary viscosity. We compare the accuracy of the method to alternative methods for treating viscosity in SPH, and apply the method to a series of tests for which there exist analytic solutions. We find that the new method is significantly more accurate than other existing methods, computationally efficient, and that the results of simulations carried out using the method are in excellent agreement with the theory.
Governance over Economics: Making Globalisation Good for the Poor

The paper employs different definitions of inequality/ equality and investigates how globalisation is associated with these welfare measures. The nations’ proximity to post modernism development culture through international cooperation may enable countries to strengthen their social, economic, legal and political institutions. We find that adopting well developed institutional governance practices as matter of greater integration with modern 21st century governance culture creates thriving middle classes in developing countries enabling a downward pressure on inequality of incomes and wages. In contrast, integration of goods and services with world markets puts upward pressure on the wages of skilled in contrast with the unskilled causing industrial wage inequalities in both developed and developing countries. The paper recommends in line with the recent literature on pre mature de industrialisation phenomenon that countries may protect their local industries to provide jobs to locals and thus enable the gains of trade to be more equally distributed among the populations. This can be done by choosing the second best option towards global integration and that is to promote regionalism within geographical clusters.
Biomass Losses Caused by Teratosphaeria Leaf Disease in Eucalyptus globulus Short Rotation Forestry

This article presents the results of a study that examines the loss of biomass and energy, per hectare, caused by Teratosphaeria leaf disease (TLD) in Eucalyptus globulus short rotation forestry. The 95 Eucalyptus globulus taxa analyzed are from seeds of open pollinated families of both Spanish and Australian origin. Tree height and diameter were measured and the crown damage index (CDI) assessed at 27 months of age. Taxa that have a certain tolerance to the disease have been identified. The taxon identified as code 283 is the one that shows lower CDI (42%) and with an average volume that exceeded 0.017 m3 at 27 months of age. Biomass losses were determined for each fraction of dry biomass of the tree (leaves, branches, twigs and bark) based on CDI. These losses were translated into terms of energy lost per hectare, depending on the CDI. A comparison was then carried out between the productivity of Eucalyptus globulus exhibiting various levels of TLD severity and poplar and willow clones used for bioenergy in Europe. In our region, the results show that despite the losses of biomass associated with TLD, Eucalyptus globulus remains competitive as long as CDI values are lower than 56%.
FORAGE YIELD AND NUTRITIVE VALUE IN PENNISETUM CLONES HARVESTED IN THE FOREST ZONE

Objetivou com este trabalho verificar a produção e valor nutritivo de cinco genótipos de Pennisetum (IRI-381, Venezuela, Elefante B, HV241 e Hexaplóide) sob corte na Zona da Mata Seca de Pernambuco. As amostras foram obtidas de uma área útil de 2,0 m2, num delineamento em blocos casualizados com 6 repetições. Após o corte de uniformização, efetuaram-se quatro cortes a intervalos de 60 dias. Foi tomada uma amostra de três perfilhos de cada parcela. Foram avaliados os percentuais de matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), extrato etéreo (EE), matéria mineral (MM), digestibilidade in vitro da matéria seca (DIVMS) carboidratos totais (CHOT) e carboidratos não fibrosos (CNF). Os genótipos avaliados apresentaram rendimento médio de MS de lâminas foliares de 1,7 t/ha/corte e de colmos de 2,1 t/ha/corte, não havendo diferença entre clones (p>0,05). Nas lâminas foliares e nos colmos, respectivamente, observouse 21,1 a 15,1% para MS; 9,1 a 5,3% para PB; 73,2 a 77,7% para FDN; 40,3 a 47,4% para FDA; 9,6 a 11,6% para MM; 1,9 a 0,7% para EE; 56,2 a 56,3% para DIVMS; 79,3 a 82,4% para CHOT e 11,4 a 9,7% para CNF. Os clones apresentaram de média a alta herdabilidade e rendimento forrageiro e valor nutritivo semelhantes, quando manejados aos 60 dias de idade nas condiçoes da zona da mata seca de Pernambuco.
EXPERIMENTAL INVESTIGATION ON HEAT TRANSFER AND FRICTION FACTOR CHARACTERISTICS OF A STATIONARY SQUARE DUCT ROUGHENED BY V AND ᴧ-SHAPED RIBS

One of the traditional methods used to improve the efficiency of a gas turbine is to increases the inlet temperature; thereby increasing the power output and in turn, the efficiency. The internal cooling passages of blades are roughened by artificial roughness to improve the cooling performance. The present study investigates the convective heat transfer and friction factor (pressure drop) characteristics of a rib-roughened square duct. The test section of the duct is roughened on its top and bottom wall with V and ᴧ- shaped square ribs. In the study, the Reynolds number (Re) varied from 10,000 to 40,000, the relative roughness height (e/Dh) is 0.060, relative roughness pitch (p/e) is 10 and rib attack angle (α) is taken as 45 0 and 60 0 . The comparison of heat transfer and pressure drop for V and ᴧ- shaped ribs is presented in the form of Nusselt Number and friction factor. The results show that the Nusselt number enhancement decreases when the Reynolds number increases. The friction factor ratio is found to increases as Reynolds number increases. The thermal performance decreases when the Reynolds number increases. It seems that the ribs disturb the main flow resulting in the recirculation and secondary flow near the ribbed wall. The heat transfer coefficient and friction factor for all the cases are higher than that of the smooth duct. The V-shaped ribs have higher Nusselt number and friction factor than the ᴧ - shaped ribs. It is also concluded that the V -shaped ribs perform better than the ᴧ- shaped ribs. Ribs with α = 60 0 produces higher heat transfer and friction factor than α = 45 0 . The results obtained in the study will help the turbine blade designer to design the
Underground Sun Storage Results and Outlook

Summary To find a storage system that can make renewable energy baseload capable and provide seasonable large scale storage RAG Austria AG initiated the Underground Sun Storage project. The research done in this project should prove the feasibility of storing hydrogen in depleted natural gas reservoirs just like commercial natural gas storages. The project was financed by RAG Austria AG and funded by the Austrian Climate and Energy Fund. It could be found that the storage of hydrogen in RAG's reservoirs is possible and furthermore that even generation of renewable methane in the subsurface might be feasible on an industrial scale.