Miracle-dz/UniFAR-FTUs huggingface dataset:
Effect of High Temperatures on Shear Transfer Strength of Concrete

The effect of exposure to elevated temperatures up to (500 o C) on shear transfer strength of concrete was investigated experimentally in this study using push-off specimens. Three groups of specimens were used, each of four specimens. One specimen from each group was heated to (150 o C), the second specimen was heated to (350 o C) and the third specimen was heated to (500 o C), while one specimen from each group was tested without heating as a reference specimen. The three groups of specimens differed from each others by the amount of shear reinforcement crossing the shear plane. The test results of this study showed that shear transfer strength decreased by about (18% to 42%) and that the higher shear reinforcement specimens retained higher strength values than those of lower shear reinforcement ones after exposure to all the studied temperatures. Also, a comparison was made between the post heat exposure behavior of shear transfer strength and the compressive and tensile strengths of concrete. It was observed that the behavior of shear transfer strength of concrete after high temperature exposure can be closely related to compressive strength than splitting tensile strength. خلا ـ صلا ـــــــ ة رثحل ةثالل لا ااااثحرل حاث تلا اا رثت ةثةاار ثحبلا اذه يف مت 055 5 ةقلثةاخرل خثالا للثاتقا ةثقملاق ثرع )س نثق جذمثقق حاا ت مت . جذلقق ة باأ نق لهقق لك نمكتت عاقلجق ة لا لإ جذلققلا هذه مةات . ةصلخ جذلقق مارختةلب لًارقع لإ ةعمقجق لك 005 5 إ يقل لام )س ل 005 5 لإ هضاا ت مت لل لا جذمققلام )س 055 5 قاح متا مل لققاب ,)س متثةق عث اا سذثلا خثالا رثارح ةثاقكب لهثض ب نثع ةث لا لا عاقلثجقلا فرتخت . ي جاق جذمققك هصحف متم عباالا جذمققلا . خالا ااات مااثتا خثالا للثاتقا ةثقملاقب لثصلحلا خاقثلا اارثاق نأ ناثبت ةةاارلا هذه جئلتق ناثب لًثب 01 م 24 نام )% اااحلا تلجار لكل حا تلا ر بم خالا للاتقا ةقملاق ا اثبك ا خثالا ارثةت ةثاقك تاذ جذلثققرل ثرعأ تثااب ,ةثةمارقلا تلثجار ثلإ حاث تلا رث ب خالا للاتقا ةقملاق فاصت ةقالاق حبلا اذه يف مت لقك . لق ا خالا ارةت ةاقك تاذل لهقق اثصت عثق ةثالل لا ااااحلا قلثةاخرل رث لام لطثضقنا ةثقملاق ف ة فاثصتل فاثقأ خثالا للثاتقا ةثقملاق فاثصت نأ ناثبتم . ةقلةاخلا ر ةقملاقل لهقق ةقلةاخلا لطضقا ةقملاق Lect. Sallal Rashid Al-Owaisy Civil Engineering Department, College of Engineering Al-Mustansiriya University, Baghdad, Iraq Journal of Engineering and Development, Vol. 11, No. 1, March (2007) ISSN 1813-7822 93
Analysis of the predictive ability of the components of economic value added in predicting next period's operating profit: Evidence from Iran

Economic value added is a critical criterion in making financial decisions and investors have always been trying to make use of its ability in order to predict the profitability power of companies. This study aims to investigate the predictive ability of the components of economic value added in predicting next period’s operating profit in companies accepted in Tehran Stock Exchange. In order to do this, 119 companies were selected among the population whose necessary information in the specified six-year period (87 - 82) was available. After that, information related to four independent variables was studied. The subsequent period’s operating profit was considered as the dependent variable. Simple regression was chosen as the statistical technique to test the hypothesis. Correlation test of hypotheses was taken according to Pierson’s method. The results show that the operating profit after tax, capital amount and return on assets have the ability of predicting subsequent period’s operating profit; however, the ability of operating profit after tax is more than others.
The Effect of Soil Particle Size on the Soil Organic Matter and the Abundance of Sand Bubbler Crab Scopimera globosa at Tanjung Aru Beach, Kota Kinabalu, Sabah

A b s t r a c t Sandy beach area is an important ecosystem for most beach and intertidal animals especially for the crustaceans such as crabs and clams. The aim for this study is to identify the relationship of the soil particle size, soil organic matter and the abundance of sand bubbler crab, Scopimera globosa. This study was conducted at Tanjung Aru Beach 1, Tanjung Aru Beach 2 and Tanjung Aru Beach 3, Kota Kinabalu, Sabah. Three samplings were conducted from 11 th August until 5 th October 2015. The soil particle size was determined using sieving method while the soil organic matter was determined using the loss-on-ignition (LOI) method. The abundance of S. globosa was calculated based on the number of S. globosa obtained from the sampling. Results showed that positive correlation can be seen in the relationship of sand particle size on the soil organic matter (n = 81, r = 0.447, p < 0.05) and the abundance of S. globosa (n = 81, r = 0.311, p < 0.05). Besides, the relationship of soil organic matter and the abundance of S. globosa also showed positive correlation (n = 81, r = 0.361, p < 0.05). However, the relationship occur inversely for silt and clay whereby both showed negative correlation on soil organic matter (n = 81, r = -0.447 and 0.53, p < 0.05) and the abundance of S. globosa (n = 81, r = -0.310 and 0.431, p < 0.05). For recommendation, in order to study on the distribution of different types of soil particle size, soil organic matter and abundance of any crustaceans at the beach area, other factors such as tidal level, wave actions and vegetation in the area should be included because they also affect the distributions. © Transactions on Science and Technology 2016
Saenz-Agudelo, Pablo (2011) Estimating connectivity in coral reef fish populations: a tool for understanding stability and resilience of marine ecosystems. PhD

The application of spatially explicit models of pop ulation dynamics to fisheries management and the design marine reserves network s ystems has been limited due to a lack of empirical estimates of larval dispersal. While n w genetic methods provide direct estimates of self-recruitment and connectivity, the ir accuracy in predicting these parameters at spatial and temporal scales relevant to management is uncertain, particularly when model assumptions are violated. Here we compared assignme nt tests and parentage analysis for examining larval retention and connectivity under t wo different gene flow scenarios using panda clownfish ( Amphiprion polymnus) in Papua New Guinea. A metapopulation of panda clownfish in Bootless Bay with little or no genetic differentiation among 5 spatially discrete locations separated by 2-6km provided the high gene flow scenario. The low gene flow scenario compared the Bootless Bay metapopulation w ith a genetically distinct population (Fst = 0.1) located at Schumann Island, New Britain, 1,500km to the north-east. We used assignment tests and parentage analysis based on mi crosatellite DNA data to identify natal origins of 177 juveniles in Bootless Bay and 73 juv eniles at Schumann Island. At low rates of gene flow, assignment tests correctly classified ju veniles to their source population. On the other hand, parentage analysis led to an overestima te of self-recruitment within the two populations due to the significant deviation from p anmixia when both populations were pooled. At high gene flow (within Bootless Bay) ass ignment tests underestimated selfrecruitment and connectivity among subpopulations, and grossly overestimated selfrecruitment within the overall metapopulation. How ever, the assignment tests did identify immigrants from distant (genetically distinct) popu lations. Parentage analysis clearly provided the most accurate estimates of connectivity in situ ations of high gene flow. Still, because sampling a consistent fraction of potential parents is limited in marine environments, further research is needed to better evaluate parentage ana lysis full potential and limitations.
The Case of ‘Trust’ – Research on Social Capital in V4 Countries

Abstract The purpose of this article is firstly to discuss the basic theoretical approaches used to interpret the concept of trust in the context of social capital and then to present the results of research conducted on trust. The analysis concentrates on elements related to trust in the literature, reflecting the methodological approaches for assessing and measuring trust. In theoretically conceptualising trust we generally adopt Hardin’s explanations (1991, 2002a, 2002b, 2006), which are then used as an interpretational framework for our research results. The paper mainly analyses and interprets subjective conceptual mental maps of trust developed on the basis of associations obtained in the Czech Republic, Hungary, Poland and Slovakia using the Associative Group Analysis Technique. The participants were management and economics students and there were 100 of them in each country (50 female and 50 male; 50 from each capital – Prague, Budapest, Warsaw and Bratislava; 50 from a smaller town in each country – Ostrava, Szeged, Olsztyn and Presov). Altogether 400 students in four countries completed the tasks. In this article we mainly present the results relating to the Slovak section of the research sample.
Size-Dependent Flexural Dynamics of Ribs-ConnectedPolymeric Micropanels

This study investigates the sensitivity of the flexural response of a ribconnected system of coupled micro-panels with traction-free surfaces. Idealized as a two-dimensional elastic continuum with a finite transverse stiffness, each micropanels’ behavior is examined within the framework of the biharmonic mathematical model derived from the higher-order, size-dependent strain energy formulation. The model incorporates the material length scale, which bears an associative relationship with the underlying polymer’s averaged Frank elastic constant. Upper estimates of the eigenvalue of the system, under fully clamped edges and simplysupported edges, are determined by the Rayleigh method. The adopted theory for the micro-panel’s behavior takes into account the rotary inertia, the small-scale effect, the Poisson’s ratio and the effective stiffness of the ribs, but neglects shear distortion. Frequency shifts of the rib-connected coupled micro-panels are systematically identified and presented. Results indicate the critical thickness for which the polymeric micro-panel’s resonant frequency starts to experience stiffened responses based on the magnitude of the size-effect. The Rayleigh method of eigenvalue extraction is augmented with the applied statistical method of design of experiment for the discovery of notable interaction effects between the aspect ratio, rotary inertia, small-scale effect, and thickness-to-span ratio of the system.
The Relationship of Personality, Spirituality and Posttraumatic Growth to Subjective Wellbeing

A growing number of studies are indicating that a number of people report psychological growth after experiencing trauma. This may be so because suffering stimulates the need and search for meaning [1]. In this cross-sectional and correlational study, we sought the relationship of subjective wellbeing to posttraumatic growth in view of past trauma experiences and perceived stress. In particular, we investigated a sample of tertiary students’ perceived stress, past traumas, subjective well-being, faith maturity, positive and negative affect, and personality, together with demographic correlates. Past traumas included loss of a loved one, chronic or acute illness, injury, divorce, violent crime, and job loss, amongst others. Only a quarter of respondents experienced their trauma/s 5 years or more prior the study, thus indicating relatively recent trauma experiences. Post-traumatic growth correlated with personality, faith maturity, wellbeing and positive affect. In examining the patterns of correlations noted above, a hierarchical multiple regression analysis was employed. Posttraumatic growth was found to have unique variance even after partialling out key variables such as perceived stress, personality and faith maturity. Although situational factors and personality did play important roles, this study clearly points at the relevance of faith maturity and posttraumatic growth for the promotion of holistic wellbeing of those affected by trauma. Religious beliefs may counter hopelessness and form an important buffer in this equation. The psycho-social implications of these results were discussed.
COMPACT PRINTED DUAL BAND-NOTCHED U-SHAPE UWB ANTENNA

In this article, a low cost, simple, and compact printed microstrip-fed U-shape monopole ultra-wideband antenna with dual band-notched characteristics is proposed and investigated. By introducing a spiral shaped ‚/4 open stub in the microstrip feed line and a pair of L-shaped slots on the rectangular ground patch, dual band notched characteristics can be obtained respectively. The proposed antenna is successfully simulated, designed, fabricated and measured. The measured results show that the proposed antenna with dimensions of 24mm(Wsub) £ 34mm(Lsub) £ 1:6mm(H) has a large bandwidth over the frequency band from 2.75GHz to 10.6GHz with VSWR less than 2, except 3.27{4.26GHz and 5.01{5.99GHz frequency bands. The proposed antenna exhibits nearly omnidirectional radiation pattern, stable gain, and small group delay variation over the desired frequency bands.
Material aspects for batch integration of PZT thin films using transfer bonding technologies - Q2M development

Transfer bonding is a reliable cost-efficient and low-temperature CMOS compatible technique which allows batch integration of materials whose incompatibility with Si makes them unsuitable for monolithic integration. In this heterogeneous device integration method the material and process incompatibilities inherent in Si IC technology are overcome by fabricating devices on separate substrates and then transferring them onto target (e.g. CMOS) wafers. Transfer bonding has great potential for integrating RF-MEMS devices incorporating, for example, high thermal budget materials such as PZT and PST or non-ferroelectric piezoelectrics such as AlN and ZnO into microwave ICs for enhanced systems performance. This paper presents an overview of technology developments within the EU sponsored project Q2M for the realization of transfer bonded piezoelectrically actuated RF MEMS switches and other components focusing in particular on material factors relating to growth of the piezoelectric films, in this case sol-gel deposited PZT, that restricts the choice of device layers and impact on PZT properties such as microstructure, film orientation and piezoelectric coefficients. New process developments such as hard masking of PZT pattern during RIE etching and its compatibility with polymer transfer bonding are discussed.
Referral Networks and the Allocation of Talent

We study a model of occupational choice where workers must rely on their social contacts to acquire job vacancy information. Contrary to the existing literature, we allow for worker heterogeneity in terms of their idiosyncratic skill-types. In this case, the allocation of talent (the matching of skills to tasks) becomes a welfare-relevant consideration. A worker’s skill-type determines both his relative cost of specialising in different occupations and his productivity on the job. The model shows that relying on word-of-mouth communication for job search generates both positive externalities (due to improved labour market matching) and negative externalities (due to a poor allocation of talent). Which effect dominates depends on the prop- erties of the job search and productivity functions. Taking into account worker heterogeneity shows that the degree of occupational segregation in competitive labour markets is generally not efficient.
Collective Pitch Control of Wind Turbines Using Stochastic Disturbance Accommodating Control

Fidelity of a plant's dynamic model is a concern in any controller design process. In this context, fidelity refers to which dynamics of the plant needs to be included in the control model and which dynamics can be left out or approximated. Studies on wind turbine control have shown that modelling error due to the unmodeled dynamics can lead to unstable closed-loop dynamics. This paper investigates the use of Kalman estimator to design the Stochastic Disturbance Accommodating Control (SDAC) scheme to stabilize the system in the presence of the unmodeled dynamics. Performance of the presented control scheme is investigated through simulations on two different wind turbine configurations under turbulent wind conditions with different mean wind speeds and turbulence intensities using FAST (Fatigue, Aerodynamics, Structures, and Turbulence) aero-elastic tool. The generator speed regulation, drivetrain load, and control effort of the presented control scheme are compared with those of the baseline Gain Scheduled Proportional Integral (GSPI) controller. The results indicate better speed regulation and lower drivetrain load for the presented SDAC under the tested wind conditions.
POLITECNICO DI TORINO Repository ISTITUZIONALE The Hydrodynamics of Astrophysical jets : Scaled Experiments and Numerical Simulations /

Context. In the present paper we study the propagation of hypersonic hydrodynamic jets (Mach number greater then 5) in a laboratory vessel and make comparisons with numerical simulations of axially symmetric flows in the same initial and boundary conditions. The astrophysical context is that of the jets issuing from Young Stellar Objects (YSOs). Aims. In order to have a further insight into the jets from YSOs, a set of experiments and numerical simulations of hypersonic jets is performed in the range of Mach numbers from 10 to 20 and for jet-to-ambient density ratios from 0.85 to 5.4, using different gas species and observing jet lengths of the order of 150 initial radii or more. Exploiting the scalability of the hydrodynamic equations, we intend to reproduce the YSO jet behaviors as far as the jet and head velocities and elapsed times are concerned. In addition, we can make comparisons between the simulated, the experimental and the observed morphologies. Methods. In the experiments the gas pressure and temperature are increased by a fast, quasi isentropic compression by means of a piston system operating on a time scale of tens of millisecond, while the gas density is visualized and measured by means of an electron beam system. The PLUTO software for the numerical solution of mixed hyperbolic/parabolic conservation laws targeting high Mach number flows in astrophysical fluid dynamics is used. We consider axisymmetric initial conditions and carry out numerical simulations in cylindrical geometry. The code has a modular flexible structure whereby different numerical algorithms can be separately combined to solve systems of conservation laws using the finite volume or finite difference approach based on Godunov-type schemes. Results. The agreement between experiments and numerical simulations is fairly good in the majority of comparisons. The resulting scaled flow velocities and elapsed times are close to the ones shown by observations. The morphologies of the density distributions agree with the observed ones as well. Conclusions. The laboratory and the simulated hypersonic jets are all pressure matched, i.e. their axial regions are almost isentropic at the nozzle exit. They maintain their collimation for long distances in terms of the initial jet radii, without including magnetic effects. This yields a qualitatively good agreement with the observed YSO jets morphologies. It remains to be seen what happens when non axially symmetric perturbations of the flow are imposed at the nozzle both in the experiment and in the simulation.
COMPARATIVE STUDY OF MOBILE AD-HOC NETWORKS IN REACTIVE ROUTING PROTOCOLS DSR AND TORA

A Mobile Ad hoc network (MANET) is self-configurable network systems of mobile nodes is connected by wireless links. These nodes infrastructure less (ad hoc) network and there is no centralized control. Each node operates not only as an end system. Every node participates in routing by forwarding data for other nodes dynamically on the basis of network connectivity. MANETs nodes are changed position frequently in case may be broken down due to mobility and dynamic infrastructure. Hence routing becomes a critical issue that needs to be addressed for smooth transmission. Number of protocols is proposed by many authors due to the wide application of MANETs. The objective of this paper is to survey and compare DSR and TORA routing protocols in Reactive routing protocols in the MANET routing protocols are discussed in details.
Temporal offset in oceanic production and respiration processes implied by seasonal changes in atmospheric oxygen: the role of heterotrophic microbes

Recent data on seasonal variation in the concentration of atmospheric oxygen are independent evidence for a marked annual cycle in the production/respiration (P/R) ratio of the biotic community of the ocean in both the northern and the southern hemispheres. Based on the oxygen data, the P/R ratio tends to be > l during a 3 to 5 mo period from late winter to early spring, and < l during the rest of the year. The amount of oxygen which accumulates in the atmosphere during spring as a result of ocean biology implies a seasonal unrespired production of, on average, 50 to 60 g C m-2 This amount of fixed carbon is approximately one third of annual oceanic primary production, and several-fold greater than measured sinking fluxes of particulate organic matter in the open sea. Size-fractioned respiration rates in seawater imply that c5 pm sized microbes, in particular bacteria, play a major role in the estabhshment of the seasonal P/R cycle. Hypotheses to explain less microbial respiration compared to primary production in spring than in summer/fall in the open ocean might include: (1) temperature effect on respiration; (2) seasonal differences in bacterial growth efficiency; and (3) seasonal differences in quality of organic substrates. These processes may result in marked seasonal variation in abundance of metabolically active bacteria. Elucidating the mechanisms that contribute to the seasonal cycle in P/R ratios in the world ocean should be a goal of future research in microbial oceanography.
Modified Reductive Perturbation Method as Applied to Long Water-Waves:The Korteweg-de Vries Hierarchy

In this work, we extended the application of "the modified reductive perturbation method" to long water waves and obtained the governing equations of KdV hierarchy. Seeking a localized travelling wave solutions to these evolution equations we determined the scale pa- rameter c1 so as to remove the possible secularities that might occur. To indicate the power and elegance of the present method, we studied the same problem by use of the " dressed solitary wave method " and obtained exactly the same result. The present method is seen to be fairly simple as compared to the renormalization method of Kodama and Taniuti (4) and the multiple scale expansion method of Kraenkel et al (6).