Miracle-dz/UniFAR-FTUs huggingface dataset:
Impact of Fixed Series Capacitors and SSSC on the LOE Protection of Synchronous Generator

Loss of excitation (LOE) relay is prevalently used to protect synchronous generator. The widely used method for synchronous generator LOE protection is a negative offset mho relay with two zones. The basis of this relay is identical to mho impedance relay. In other words, this relay calculates impedance by measuring voltage and current at the generator terminal. On the other hand, the presence of series compensation, changes measured voltage and current signals during loss of excitation. This paper reveals that the presence of series compensators such as fixed series capacitors (FSCs) and static synchronous series compensator (SSSC) causes a significant delay on the performance of generator LOE relay. It is also shown that the presence of SSSC causes the LOE relay to be under-reached. Different operating modes of the power system, the SSSC and also different percentages of series capacitive compensations have been considered in the modeling. All the detailed simulations are carried out in the MATLAB/Simulink environment using the SimPowerSystems toolbox.
Effects of replacement of soya bean meal by bambara nut sievate on the carcass and organ parameters of finisher broiler chicks

Eighty 4-weeks old broiler chicks (Anak 2000 strain) were used in a 28 days feeding trial to determine the effects of replacement of soya bean meal (SBM) by bambara nut sievate (BNS) on the carcass and organ characteristics of fin- isher broiler chicks. BNS replaced soya bean meal by weight for weight at levels 0%, 5%, 10% and 15% for treatments 1,2, 3 and 4; respectively which were replicated four times in a completely randomized design. Feed and potable water were supplied ad libitum to the birds. Also, ap- propriate medication, sanitation and other stan- dard management practices were strictly adopt- ed. At the 28th day, one bird was randomly picked from each replicate, starved of food for 24 hours and then slaughtered and eviscerated for carcass and organ evaluation. Weights were measured with digital weighing scale. Results of analysis of variance of carcass parameters showed significant (P 0.05) in the values above but only varied with birds on 10% and 15% BNS. Other carcass parameters were simi- lar (P > 0.05) in value between treatments. The liver, heart, gizzard and intestine significantly varied (P < 0.05) between their treatments. How- ever, kidney values did not differ significantly. From the results, it appeared that 5% BNS in- clusion is optimal for carcass and organ char- acteristics of finisher broilers.
Larvicidal activity of Murraya koenigii (L.) Spreng (Rutaceae) hexane leaf extract isolated fractions against Aedes aegypti Linnaeus, Anopheles stephensi Liston and Culex quinquefasciatus Say (Diptera: Culicidae)

Mosquitoes are significant public health pests and act as a vector of several diseases viz . , malaria, filariasis, Japanese encephalitis, dengue fever and chikungunya, which are transmitted by the three genera of mosquitoes, viz . , Anopheles, Culex and Aedes . Mosquito control strategies have depended primarily on the use of synthetic chemical insecticides but resulted in rebounding vectorial capacity, environmental and human health concerns. Plants may be a source of alternative agents to replace the synthetic insecticides for mosquito control. In the present study, the isolated fractions of Murraya koenigii hexane leaf extracts were evaluated for larvicidal activity against vector mosquitoes viz., Aedes aegypti , Anopheles stephensi and Culex quinquefasciatus . Six fractions viz., A, B, C, D, E and F were obtained from the residue of hexane extract by column chromatography. Standard WHO protocol with minor modifications was adopted for the larvicidal bioassay. Larvicidal activity was evaluated against the isolated fractions at concentrations of 25, 50, 75 and 100 ppm. Larval mortality was observed 24 hours post exposure. Amongst the isolated fractions tested, fraction ‘D’ showed 100.0, 97.6 and 99.2% mortality against third instar larvae of Aedes aegypti , Culex quinquefasciatus and Anopheles stephensi at 100 ppm, respectively and LC50 values were 35.06, 27.20 and 42.51 ppm respectively. Further investigations are needed to explore the larvicidal activity of the isolated fraction ‘D’ of hexane leaf extract of this plant and also the active principle(s) responsible for larvicidal activity.
Snowdrift modelling for the Vestfonna ice cap, north-eastern Svalbard

Abstract. The redistribution of snow by drifting and blowing snow frequently leads to an inhomogeneous snow mass distribution on larger ice caps. Together with the thermodynamic impact of drifting snow sublimation on the lower atmospheric boundary layer, these processes affect the glacier surface mass balance. This study provides a first quantification of snowdrift and sublimation of blowing and drifting snow on the Vestfonna ice cap (Svalbard) by using the specifically designed snow2blow snowdrift model. The model is forced by atmospheric fields from the Polar Weather Research and Forecasting model and resolves processes on a spatial resolution of 250 m. The model is applied to the Vestfonna ice cap for the accumulation period 2008/2009. Comparison with radio-echo soundings and snow-pit measurements show that important local-scale processes are resolved by the model and the overall snow accumulation pattern is reproduced. The findings indicate that there is a significant redistribution of snow mass from the interior of the ice cap to the surrounding areas and ice slopes. Drifting snow sublimation of suspended snow is found to be stronger during spring. It is concluded that the redistribution process is strong enough to have a significant impact on glacier mass balance.
Regulatory focus and technology acceptance: Perceived ease of use and usefulness as efficacy

Abstract The technology acceptance model (TAM) has been widely used to gage IS adoption. Over the years, although research on the replications, extensions, and modifications of TAM has been prolific in adding antecedents and moderators to TAM, scant attention has been devoted to exploring TAM mediators. The current research attempts to deepen the understanding of TAM by delineating the underlying theoretical mechanisms of TAM relationships. In addition, we propose a parsimonious moderator, regulatory focus, to help integrate previously identified moderators, such as organizational, technological, and individual characteristics, that have been noted in prior studies. We report the results of one pilot study and two main studies in support of our proposed model, which serves to simplify and facilitate practical and managerial applications and implementation of TAM in IS strategy.
Searching for signs of habitability with LOUPE, the Lunar Observatory of Unresolved Polarimetry of Earth

We present LOUPE, a novel type of spectropolarimeter to measure the flux and state of polarization of sunlight that is reflected by the Earth from 0.4 to 0.8 µm. LOUPE has been designed as payload of a lunar lander. From the moon, the Earth can be observed as a whole, during its daily rotation and at all phase angles, just as if it were an exoplanet. LOUPE will provide benchmark data for the development of instruments for Earth-like exoplanet characterization, and for the testing of numerical retrieval algorithms.
Rotation periods and photometric variability of rapidly rotating ultracool dwarfs

We used the optical and near-infrared imagers located on the Liverpool, the IAC80, and the William Herschel telescopes to monitor 18 M7$-$L9.5 dwarfs with the objective of measuring their rotation periods. We achieved accuracies typically in the range $\pm$1.5$-$28 mmag by means of differential photometry, which allowed us to detect photometric variability at the 2$\sigma$ level in the 50\% of the sample. We also detected periodic modulation with periods in the interval 1.5$-$4.4 h in 9 out of 18 dwarfs that we attribute to rotation. Our variability detections were combined with data from the literature; we found that 65$\,\pm\,$18 $\%$ of M7$-$L3.5 dwarfs with $v\,$sin$\,i\ge30$ km s$^{-1}$ exhibit photometric variability with typical amplitudes $\le$20 mmag in the $I$-band. For those targets and field ultra-cool dwarfs with measurements of $v\,$sin$\,i$ and rotation period we derived the expected inclination angle of their rotation axis, and found that those with $v\,$sin$\,i\ge30$ km s$^{-1}$ are more likely to have inclinations $\gtrsim40$ deg. In addition, we used these rotation periods and others from the literature to study the likely relationship between rotation and linear polarization in dusty ultra-cool dwarfs. We found a correlation between short rotation periods and large values of linear polarization at optical and near-infrared wavelengths.
Effects of CO 2 , continental distribution, topography and vegetation changes on the climate at the Middle Miocene: a model study

Abstract. The Middle Miocene was one of the last warm periods of the Neogene, culminating with the Middle Miocene Climatic Optimum (MMCO, approximatively 17–15 Ma). Several proxy-based reconstructions support warmer and more humid climate during the MMCO. The mechanisms responsible for the warmer climate at the MMCO and particularly the role of the atmospheric carbon dioxide are still highly debated. Here we carried out a series of sensitivity experiments with the model of intermediate complexity Planet Simulator, investigating the contributions of the absence of ice on the continents, the opening of the Central American and Eastern Tethys Seaways, the lowering of the topography on land, the effect of various atmospheric CO2 concentrations and the vegetation feedback. Our results show that a higher than present-day CO2 concentration is necessary to generate a warmer climate at all latitudes at the Middle Miocene, in agreement with the terrestrial proxy reconstructions which suggest high atmospheric CO2 concentrations at the MMCO. Nevertheless, the changes in sea-surface conditions, the lowering of the topography on land and the vegetation feedback also produce significant local warming that may, locally, even be stronger than the CO2 induced temperature increases. The lowering of the topography leads to a more zonal atmospheric circulation and allows the westerly flow to continue over the lowered Plateaus at mid-latitudes. The reduced height of the Tibetan Plateau notably prevents the development of a monsoon-like circulation, whereas the reduction of elevations of the North American and European reliefs strongly increases precipitation from northwestern to eastern Europe. The changes in vegetation cover contribute to maintain and even to intensify the warm and humid conditions produced by the other factors, suggesting that the vegetation-climate interactions could help to improve the model-data comparison.
Optimization of T-shaped waveguide branches in two-dimensional photonic crystals (Chinese Title: Optimization of T-shaped waveguide branches in two-dimensional photonic crystals)

The interval and the radius of a pair of defect dielectric rods in waveguide channels near the branching region of a T-shaped waveguide branches are simultaneously varied, and their effects on the transmission properties are investigated using the finite-difference time-domain (FDTD) method. Numerical results show that there is an optimized region where the relative bandwidth of high-transmission (total transmittance >0.95) band of the branches is larger than 17%, which is higher than that of the existing same structures (11.60%) with fixed interval. These results provide for engineering application of simple T-shaped waveguide branches with high transmission.
A Data Forwarding Scheme Based on Delaunay Triangulation for Cyber-Physical Systems

Cyber-physical system (CPS) cooperates with physical processes, computing, communication, and control (3C) into multiple levels of information processing and operation management to streamline and fortify the operation of physical systems. Due to the unique characteristics, such as unpredictable node mobility, low node density, lack of global information and network intermittent connectivity, an algorithm for data forwarding in CPS is a considerably difficult and challenging problem, and there is no good solution to it in existing works. In this paper, we propose a fully-fledged data forwarding algorithm tailored to the CPS environment. The proposed protocol, called data forwarding based on Delaunay triangulation (DFDT), takes into account the computational geometry based on Delaunay triangulation to form a few triangle communities according to nodes’ connectivity. Data in a community are forwarded to other nodes once a node comes into this community to increase the data delivery ratio. DFDT achieves a good performance by data gathering and sending data to other nodes with higher probability of meeting the link. An extensive simulation has been performed to validate the analytical results and to show the effectiveness of our approach compared with the three existing popular data forwarding algorithms.
Evidence of Female Preference for Older Males in Drosophila bipectinata

Krishnashetty Somashekar and Mysore Siddaiah Krishna (2011) Evidence of female preference for older males in Drosophila bipectinata. Zoological Studies 50(1): 1-15. Male age influence on mating success was studied using 3 geographic strains of Drosophila bipectinata. When investigating 3 age classes of males, it was noted that females preferred to mate with the older of 2 males more frequently than with the younger one. A non-significant difference was also noted in the mean wing length between the selected and rejected males by females in a female-choice experiment. Old males mated faster, copulated longer, and inseminated more females in a given unit of time than did young or intermediate-aged males. Furthermore, females mated with older males had shorter lifespan compared to females mated with young and intermediate-aged males. These studies suggest that irrespective of geographic strain, D. bipectinata females prefer to mate with older males, and the older of the 2 competing males had a greater mating advantage in terms of inter-male success, mated faster, and inseminating more females in a given unit of time compared to young and intermediate-aged males. Females mating with older males lived a shorter time than females mating with young and intermediate-aged males.
Resistin as Marker of Metabolic and Cardiovascular Abnormalities in OSA Patients

Background: Resistin is a novel adipokine that has been reported as an independent predictor for hypertension and a marker for insulinresistance in the general population. Its rolein patients with obstructive sleep apnea, has not been investigated yet. Aim: To explore the role of resistinas a marker of insulin resistanceand nighttime blood pressure abnormalities in obstructive sleep apnea patients. Materials and methods: A total of 77hypertensive patients with newly diagnosed obstructive sleep apnea have been investigated.Patients were divided into three groups in regards to their glucose tolerance and the association between resistin and markers of insulin resistancewas analysed. In non-diabetic OSA patients ABPM was additionally performed. The relation between resistin and nocturnal hypertension was analysed. Results: Resistin plasma levels were higher in patients with diabetes (6,12 ±5,93ng/ml), compared to those withIGT (3,85±2,81ng/ml, p-0,021) and NGM (3.97±2.98,p***-0,038). Resistin did not differ between patients with IGT andNGM (p-0,843). In OSA patients with BMI>40 resistin plasma levels did not correlate to the clinical parameters, associated with adiposity.They were higher in subjects with nocturnal hypertension in comparison to those with normal blood pressure - (7.81±4.43 vs. 4.90±2.92 ng/mL). Conclusions: Resistsin plasma levels in OSA patients with BMI>40 may be used in amultipanel of markers to discern patients with diabetes from those with IGT. Hyperresistinemia could contribute to thepathogenesis of nocturnal hypertension in non-diabetic obstructive sleep apnea patients.
Comparison of antenna array techniques for the downlink of multi-carrier CDMA systems

The paper deals with transmit pre-filtering using antenna arrays in the downlink of wireless cellular systems based on multi-carrier code division multiple access (MC-CDMA). In addition to the signal separation in frequency obtained by spreading codes, the base station exploits the spatial separation of users to improve interference mitigation, which enables the use of low-complexity mobile receivers. We propose transmit filtering techniques optimizing the signal separation in space only, or jointly in space and frequency, according to single- and multi-user criteria. These techniques assume channel knowledge at transmission, and are particularly destined for time division duplex systems, where we may benefit from channel reciprocity between up- and downlink. We compare the performance of the proposed techniques in terms of interference reduction and robustness to time variant channels. Simulation results emphasize the benefit of transmit filtering optimized jointly in space and frequency, which allows a striking increase on the user capacity thanks to space division multiple access.
THE IMPLICATIONS OF EMERGENCE OF CHINA TOWARDS ASEAN-5: FDI-GDP PERSPECTIVE

The relationship between Foreign Direct Investment (FDI) and Gross Domestic Products (GDP) had become the centre piece of recent researches in identifying the short run and long run implications between the two variables. Using the hypotheses of FDI led GDP and GDP led FDI as theoretical framework, this study intends to analyze the implications of the rise of China towards the ASEAN-5 countries, namely Indonesia, Malaysia, the Philippines, Singapore and Thailand from the perspective of FDI and GDP. The cointegration and vector error correlation estimate test results showed that there is a significant positive long run relationship between FDI of China and GDP of ASEAN-5. However, we failed to detect any short run causal relationship among the variables under study.
Expression and Thermostability study of Triose Phosphate Isomerase (TIM) from Pseudomonas π9, a Psychrophilic Bacterium

Psychrophiles are organisms that grow rapidly below 20oC. In order to overcome the inherent challenges in cold environment, evolution of cold-active enzymes with high catalytic efficiency at low temperature has been one of the psychrophiles adaptive strategies. In this study, triose phosphate isomerase (TIM) of Pseudomonas sp. π9, which was isolated from sea ice of Antarctic at Casey station, was expressed in Escherichia coli BL21 (DE3) host under IPTG induction and purified to homogeneity for subsequent biochemical characterization. The optimum temperature for the activity of this enzyme was found to be in the range of 35 to 40oC. The thermostability study showed that this protein remained stable after 2 hr incubation at 40oC and was gradually inactivated at 50oC. The possessing of higher values of aliphatic index and grand average of hydropathy by Pseudomonas sp. π9 TIM as compared to other psychropilic TIM proteins could explain for its higher thermostability feature. Comparative protein sequence analysis performed on TIM sequences from psychrophilic, mesophilic, thermophilic and hyperthermophilic bacteria revealed the preference of tiny, small, aliphatic and non-polar amino acids in psychrophilic and mesophilic TIM as compared to thermophilic and hyperthermophilic TIM. In conclusion, our study showed that Pseudomonas sp. 9 TIM exhibited mesophilic properties instead of psychrophilic features. Nevertheless, the deeper understanding of strategies evolved by TIM enzymes that adapted to varied environments would provide contributive information for further studies on these valuable cold-adapted enzymes.
Gauge-fixing condition on prepotential of chiral multiplet for nongeometric backgrounds

Gauge-fixing condition on prepotential of chiral multiplet for nongeometric backgrounds Tetsuji Kimura1,2,3,∗ 1Research and Education Center for Natural Sciences, Keio University, Hiyoshi 4-1-1, Yokohama, Kanagawa 223-8521, Japan† 2Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan 3Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan ∗E-mail: tetsuji.kimura@keio.jp
Source control as an adaptation measure to climate change for urban drainage systems

Many studies suggest that climate change (CC) will have an impact on extreme rainfall frequencies and intensities, thereby potentially modifying relevant meteorological design parameters for sewer networks. This paper presents the methodology that has been used to evaluate, for the southern part of the Province of Quebec in Canada, the potential impacts of CC on the meteorological design parameters of urban drainage systems and the associated impacts on the runoff volumes and peak discharges for typical urban land uses. An analysis was also performed to examine how source control measures could be used to mitigate these impacts so that the systems could still provide the adequate level of service and an acceptable risk level. The fact that these source controls could indeed compensate for a large part of the expected increases associated with CC for less intense rainfall events and that they could, in many cases, be easily implemented, reinforces the need to re-evaluate the overall design approaches for the design of stormwater sewer networks. In that perspective, source controls should not be viewed as an alternative to traditional approaches to drainage but should rather become an integral part of urban drainage planning.
Contribution of illegal hunting, culling of pest species, road accidents and feral dogs to biodiversity loss in established oil-palm landscapes

Abstract Context. Understanding the ecological impacts of the palm-oil industry on native fauna requires information on anthropogenic threats that may cause species decline or local extinction. Aim. The main aim of the study was to assess wildlife deaths caused by illegal hunting, road accidents and introduced predators in established oil-palm landscapes in Peninsular Malaysia. Methods. Between April and October 2009, we interviewed 362 oil-palm workers at 36 sites, including large industrial estates and semi-traditional smallholdings. Key results. Our results showed that (1) illegal hunting by oil-palm workers in different oil-palm management systems was not statistically significant (P = 0.097), (2) native fauna were more often destroyed as pests in smallholdings than in conventional and eco-friendly plantation estates (P = 0.005), (3) non-local poachers conducted illegal activity more often in smallholdings than in conventional and eco-friendly plantation estates (P = 0.011), (4) road accidents were reported to kill more native fauna in conventional plantation estates than in smallholdings and eco-friendly plantation estates (P < 0.001) and (5) feral dogs were reported as killing more native fauna in eco-friendly plantation estates than in conventional plantation estates and smallholdings (P = 0.034). Conclusion. In addition to the conversion of native forest to oil-palm monocultures, various other anthropogenic threats can have a substantial effect on wildlife in oil-palm landscapes. Implications. To improve the conservation value of oil-palm landscapes, we recommend that palm-oil stakeholders should implement anti-poaching patrols, organise conservation programs to educate workers, reduce vehicle speeds on roads within oil-palm landscapes, and control local populations of feral dogs.