bluuebunny/crossref_metadata_2025 huggingface dataset:
Identification of Expressed Sequence Tag-simple Sequence Repeat Markers from the De Novo Transcriptome Sequence of Red Raspberry (Rubus idaeus L.)
Authors: Liu Jianfeng , Yang Bowen , Ming Yuetong , Zhang Yuchu , Cheng Yunqing
Published: May 2017

Rubus idaeus has remarkable economic and cultural value. Developing efficient simple sequence repeat (SSR) markers is necessary for the molecular breeding of red raspberry. In this study, SSR mining was performed using the de novo transcriptome sequence of R. idaeus. In total, 14,210 SSR sequences were identified from 11,158 SSR-containing unigenes. In all the SSR sequences, mononucleotide, dinucleotide, and trinucleotide repeats were the most common, and their number and percentage were 1323 (9.31%), 6752 (47.52%), and 4897 (34.46%), respectively. Of the mononucleotide and dinucleotide repeats, A/T, AG/CT, AT/AT, and AC/GT were more abundant and accounted for 9.09%, 37.82%, 6.51%, and 3.14% of the total repeat number, respectively. In the trinucleotide, tetranucleotide, pentanucleotide, and hexanucleotide repeats, the nucleotide (NT) patterns AAG/CTT, AAAG/CTTT, AAAAG/CTTTT, and AAGAGG/CCTCTT were the most frequent, and accounted for 14.11%, 0.38%, 0.57%, and 0.23% of the total SSRs, respectively. Of the 480 SSR-containing unigenes with gene ontology (GO) annotation, the classification results showed that they were mainly involved in binding, catalytic, and transporter molecular functions. Most of the 3441 SSR-containing unigenes with the Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation were involved in the following top five pathways: metabolic, RNA transport, spliceosome, protein processing in the endoplasmic reticulum, and mRNA surveillance. Thirty pairs of primers derived from the red raspberry transcriptome were randomly selected to assess their polymorphism by using 15 red raspberry germplasms, in which the polymorphism information content (PIC) values ranged from 0.50 to 0.86, with a mean of 0.73, thereby indicating a high level of polymorphism. The unweighted pair group method with arithmetic mean clustering results indicated that the thirty pairs of primers could precisely distinguish the germplasms. This study reveals the SSR distribution characteristics of red raspberry and provides a scientific basis for further genetic diversity studies and genetic linkage map construction for this species.
Evaluating Iris Yellow Spot Disease Incidence and Severity in Onion Germplasm of Varying Leaf Characteristics
Authors: Cramer Christopher S. , Kamal Neel , Singh Narinder
Published: May 2017

Iris yellow spot (IYS) disease, caused by Iris yellow spot virus (IYSV), results in irregular and diamond-shaped, chlorotic, and necrotic lesions on the leaves and seedstalks of onions (Allium cepa L.). These lesions reduce leaf photosynthetic area and ultimately reduce onion bulb size and yield from larger bulb classes. IYSV is vectored by onion thrips (Thrips tabaci L.) that are difficult to control under certain environmental conditions. Currently, no onion cultivar is resistant to the disease symptoms, virus, and/or thrips. Twenty-one cultivars and 17 germplasm lines were evaluated in the field for IYS disease severity and thrips densities at multiple times during the season as well as leaf color, waxiness, and axil openness of these entries. Plants were grown under conditions that favored thrips populations (high temperatures, low moisture, and no insecticidal spray applications), IYSV presence and distribution, and IYS development. Plants of New Mexico State University (NMSU) 07-10-1 had fewer thrips than several entries later in the season in both 2009 and 2010. Several entries exhibited a lower number of thrips per plant early or later in the season; however, these results were not consistent across years and were not associated with a particular foliage characteristic. Lighter leaf color and/or a lesser amount of epicuticular wax did not always result in the fewest number of thrips per plant as has been reported in the literature. Plants of NMSU 09-58 tended to exhibit fewer and less severe IYS symptoms early in the season as compared with plants of other entries.
Temperature-related Variables Associated with Yield of ‘Kerman’ Pistachio in the San Joaquin Valley of California
Authors: Kallsen Craig E.
Published: May 2017

Information on how annual pistachio yield is affected by air temperature (Ta) during the winter and growing season is lacking. Timely advance knowledge of the magnitude of the yield of the California pistachio harvest would be beneficial for the pistachio industry for efficient allocation of harvest and postharvest resources, such as personnel, harvesting machinery, trucks, processing facility capacity, crop storage facilities, and for making marketing decisions. The objective of this study was to identify parameters, especially Ta variables and time periods, calculated from Ta data during the previous fall, winter, spring, and summer, that were associated most closely with fall nut-crop yield. The premise of this study was that sequential, historical yield records could be regressed against a number of Ta-derived variables to identify Ta thresholds and accumulations that have value in explaining past and predicting subsequent nut yield. Of the 27 regression variables examined in this study, the following, which were all negatively correlated with subsequent yield, explained the greatest proportion of the variability present in predicting yield of ‘Kerman’ pistachio: yield of the previous-year harvest, hourly Ta accumulations above 26.7 or 29.4 °C from the time period between 20 Mar. and 25 Apr., hourly Ta accumulations below 7.2 °C from 15 Nov. to 15 Feb., and hourly Ta accumulations above 18.3 °C from 15 Nov. to 15 Feb.
Wave intensity analysis and its application to the coronary circulation
Authors: Broyd C J , Davies J E , Escaned J E , Hughes A , Parker K
Published: May 2017

Wave intensity analysis (WIA) is a technique developed from the field of gas dynamics that is now being applied to assess cardiovascular physiology. It allows quantification of the forces acting to alter flow and pressure within a fluid system, and as such it is highly insightful in ascribing cause to dynamic blood pressure or velocity changes.When co-incident waves arrive at the same spatial location they exert either counteracting or summative effects on flow and pressure. WIA however allows waves of different origins to be measured uninfluenced by other simultaneously arriving waves. It therefore has found particular applicability within the coronary circulation where both proximal (aortic) and distal (myocardial) ends of the coronary artery can markedly influence blood flow. Using these concepts, a repeating pattern of 6 waves has been consistently identified within the coronary arteries, 3 originating proximally and 3 distally. Each has been associated with a particular part of the cardiac cycle. The most clinically relevant wave to date is the backward decompression wave, which causes the marked increase in coronary flow velocity observed at the start of the diastole. It has been proposed that this wave is generated by the elastic re-expansion of the intra-myocardial blood vessels that are compressed during systolic contraction. Particularly by quantifying this wave, WIA has been used to provide mechanistic and prognostic insight into a number of conditions including aortic stenosis, left ventricular hypertrophy, coronary artery disease and heart failure. It has proven itself to be highly sensitive and as such a number of novel research directions are encouraged where further insights would be beneficial.
Mechanistic targets for the ablation of atrial fibrillation
Authors: Zaman Junaid AB , Baykaner Tina , Schricker Amir A , Krummen David E , Narayan Sanjiv M
Published: May 2017

The mechanisms responsible for sustaining atrial fibrillation are a key debate in cardiovascular pathophysiology, and directly influence the approach to therapy including ablation. Clinical and basic studies have split AF mechanisms into two basic camps: ‘spatially distributed disorganization’ and ‘localized sources’. Recent data suggest that these mechanisms can also be separated by the method for mapping – with nearly all traditional electrogram analyses showing spatially distributed disorganization and nearly all optical mapping studies showing localized sources We will review this dichotomy in light of these recently identified differences in mapping, and in the context of recent clinical studies in which localized ablation has been shown to impact AF, also lending support to the localized source hypothesis. We will conclude with other concepts on mechanism-based ablation and areas of ongoing research that must be addressed to continue improving our knowledge and treatment of AF.
Numerical analysis of evaluation methods and influencing factors for dynamic stability of bedding rock slope
Authors: Liu Xinrong , Liu Yongquan , Lu Yuming , Li Xingwang , Li Peng
Published: May 2017

As the inclination of a bedding surface is consistent with the inclination of a slope, the stability of a bedding rock slope is relatively poor, especially under dynamic loads such as earthquake and blasting. In the dynamic stability analysis of slope, the evaluation methods and influence factors of slope stability are two important concerns. Therefore, two typical bedding rock slopes are respectively established by FLAC3D to study the above concerns. The pseudo-static method, dynamic time-history method and dynamic strength reduction method is used to evaluate the dynamic stability of the model slope, and the applicability of the three methods is compared. The influence of five parameters including dynamic load frequency, slope angle, slope height, strata inclination and strata thickness on the dynamic stability is considered in the model slope with a set of bedding planes. The results show that the dynamic strength reduction method has good suitability for the stability evaluation of a bedding rock slope due to its good solution in the instability judgment and evaluation index. The dynamic stability of a slope becomes worse when the load frequency is close to the natural frequency of the slope. Due to the “elevation effect” and “bedding surface effect” in the dynamic slope response, the slope stability decreases with the increase of slope height and the reduction of strata thickness. The slope stability decreases with the increase of strata inclination and slope angle, and the strata inclination is the most sensitive parameter influencing the slope stability. When the slope angle and height increase to a certain value, the downward trend of slope stability gradually become gentle. For the model slope in this paper, when the slope angle reaches 55° and the slope height reaches 200 m, the reduction of slope stability will be no longer obvious with the increase of a slope angle and slope height.
Research on modeling and dynamic characteristics of complex coaxial rotor system
Authors: Wang Fei , Luo Gui-Huo , Yang Xi-Guan , Cui Hai-Tao
Published: May 2017

To make up deficiency of the finite element method in predicting nonlinear dynamic characteristics of coaxial rotor systems, nonlinear dynamic model of a coaxial rotor system was established with a method combining the finite element method and the fixed interface modal synthesis method. Then an implicit time domain method was presented to solve the nonlinear equations of motion thus dynamic characteristics of the rotor system can be obtained. The computational efficiency of this method largely depends on the number of degrees of freedom with nonlinear forces acting on. With nonlinear forces of squeeze film damper and intermediate bearing considered, nonlinear dynamic response characteristics of the coaxial rotor system under multiple unbalance forces were studied in this work. The results showed that the unbalance excitation frequencies are dominant in the responses of the rotor system. Besides, due to coupling effect of the intermediate bearing some combinations of the unbalance excitation frequencies were also observed in the spectrogram. Stability and periodicity of the rotor system was investigated with bifurcation diagram, Poincare map and phase diagram. It was found that the rotor system executes multiple periods orbital motion under relatively low rotational speeds. With the increasing of rotational speed, the rotor system would execute quasi-periodic motion, chaotic motion and periodic motion again. The quasi-periodic motion and chaotic motion are closely related with the SFD. Finally, under relatively low speed, the nonlinear model was validated by comparing the simulation results with the experimental data. The proposed modeling and solving method is expected to provide theoretical and engineering basis for improving prediction of nonlinear dynamic characteristics of complex rotor systems.
Dynamic modelling and control for fully-steerable large reflector antenna considering rigid-flexible coupling
Authors: Li Sulan , Bao Hong , Wang Congsi
Published: May 2017

As the size of reflector antenna increases, the influence of flexible deformation to the system dynamics is much more significant. The coupling between the flexible deformation and the rigid displacement needs to be considered. However, the traditional dynamic modelling and control method for large reflector antenna ignores this coupling. To overcome this problem, this paper proposes a dynamic method based on Lagrange Principle, and the corresponding control strategy is discussed. Finally, we take a 110 m diameter fully-steerable antenna as an example to carry out this method. All the results show that the method is stable and with high precision. It will also lay a solid foundation for the high-precision pointing of large reflector antenna.
Effect of stabilizer on flutter stability of truss girder suspension bridges
Authors: Liu Jun , Liao Haili , Li Mingshui , Mei Hanyu
Published: May 2017

An aerodynamic optimization measure of the flutter stability of long-span suspension bridges with truss girder is presented in this paper. At first, the improvement of several kinds of central stabilizers and horizontal stabilizers on flutter stability is examined through series of section model and full aeroelastic model wind tunnel tests. Subsequently, the flutter derivatives of the truss girder with and without stabilizer are identified based on two degrees of freedom coupling free vibration method. Furthermore, based on the identified flutter derivatives, the critical flutter velocities of the truss girder section with and without stabilizer are analyzed through two dimensional flutter analysis method and the critical flutter velocities of the full bridge with and without stabilizer are analyzed through three dimensional method. Afterwards, the influence of each flutter derivative on the flutter stability of the truss girder is investigated. The results indicate that central upper stabilizer can effectively increase the critical flutter velocity of the truss girder. In contrast, the central lower stabilizer and horizontal stabilizer have less influence. Setting up central upper stabilizer leads to an obvious decrease in the value of the flutter derivatives A2* and H2*, while the flutter derivatives H1*, H4*, A1* and A3* are little influenced. The two dimensional and three dimensional flutter analysis results agree well with the sectional model and full model wind tunnel test results respectively.
Study of double-potential-well leaf spring system’s chaotic vibration
Authors: Liu Shuyong , Jian Jiang , Su Pan , Wu Jiechang , Liu Ye , Fang Yuan
Published: May 2017

Chaotic vibration has become increasingly popular in the study of acoustic and vibration engineering. Many engineering designs have taken advantage of the special characteristics of chaos, and deliberately introduced it into the system to improve efficiency. As an important component, leaf springs have long been used in the suspension system of wheeled vehicles. Recent development is considering chaotic vibration in the design of leaf springs to improve the system’s reliability. However, little experimental research has been carried out to investigate the chaos characteristics of leaf springs. Meanwhile, a preliminary study showed that some of the conventional signal processing methods may not be able to successfully identify the chaos features from a leaf spring test rig due to the complexity of the practical signal. Therefore, in this paper, a leaf spring system’s chaotic vibration and relevant signal processing strategy were investigated in theory and experiment. Firstly, the relationship between the amplitude and frequency of the double potential well system is derived with averaging method. The stability is analyzed on the Vander pol plane and the global bifurcation diagram and Lyapunov exponent spectrum are applied to determine the chaotic regime accurately. Numerical simulation was conducted using a finite element method to give an idea of the leaf spring’s natural frequencies where chaotic vibration can be potentially generated. The experimental rig was then designed based on double potential well theory to generate stable and repeatable chaotic vibration, and an experimental study was carried out to investigate the system’s response characteristics under different excitation strengths and frequencies. An improved signal processing method, Wavelet-SG-EEMD (Wavelet, Savitzky-Golay (SG) and Ensemble Empirical Mode Decomposition (EEMD)), was used to reduce noise and beneficial to identify chaotic features of the vibration signal generated by the system. The nonlinear vibration response features of the system were carefully analyzed. Sub-harmonic phenomena, periodic modes and chaotic behavior were discovered during the experiment.
Diagnosing mechanical damages not detected by the OBD system of diesel engines
Authors: Zawisza Maciej
Published: May 2017

The paper presents the possibilities of diagnosing with the use of vibracoustic signal of mechanical damages of diesel engines, which are not detected by the OBD system. This system does not recognize such damages, but it masks them delaying information about the damage to the point where the regulatory values of controlling work of the engine will exceed the limit values. This is because the aim of the OBD system is to ensure the minimization of exhaust emissions. There were made measurements of vibroacoustic signal of the head of the car engine with fuel injection system Common Rail, where there were introduced mechanical failures typical and dangerous for the engine. It has been proved that the OBD system does not recognize these damages and the work of the engine is correct. Therefore, there is a need for an additional diagnostic system which supports the OBD system in detection of this type of damages. It seems that the use of vibroacoustic signal as an additional analyzed signal should improve the sensitivity of the on-board diagnostic system to damages of diesel engine. The author tested the sensitivity of vibroacoustic signal to damages introduced to the engine and he presented the proposition of the system based on simple measures of the vibroacoustic signal, which allows for both detecting mechanical damages and their identification.
Nondestructive testing system design for biological product based on vibration signal analysis of acceleration sensor
Authors: Li Xiaohao , Shen Tao
Published: May 2017

In order to reduce the disadvantages of current biological product quality testing methods, taking the quality testing in cocoon trade markets as an example, this paper has proposed a quality nondestructive testing method for biological products based on the analysis of vibration signal from acceleration sensors. According to the wavelet transformation analysis on the random vibration signal acquired from the acceleration sensor, the random vibration signal related to the silkworm chrysalis quality has been analyzed and reconstructed; then the characteristic values such as: mean value, variance, mean square root, waveform index, pulse factor, and so on of the quality signal have been extracted also; and then the characteristic values of the quality have been optimally selected within a fuzzy clustering method; at the end, a RBF neural network testing model with characteristic values from the silkworm chrysalis quality as an input signal was built. With these procedures, this paper has established a quality nondestructive testing system for silkworm chrysalis quality based on acceleration sensor signal measurement. The results from the application experiments demonstrated the effectiveness and applicability of this quality nondestructive system for quality testing of biological products. This quality nondestructive testing system has many advantages, including shortening the testing time, avoiding sample waste from traditional testing method, increasing the accuracy and reliability, which shows many bright social and economic benefits. This paper also provides the design and application of quality nondestructive testing systems based on vibration signal analysis with a theoretical support and experimental basis.
Feature extraction and fault diagnosis of wind power generator vibration signals based on empirical wavelet transform
Authors: Chen Xuejun , Yang Yongming , Yang Ning
Published: May 2017

Given the nonlinear and nonstationary characteristics of wind power generator vibration signals, the empirical wavelet transform (EWT)-based method is proposed to analyze the vibration signal characteristics and to diagnose faults. The adaptive Fourier spectrum segmentation of EWT is analyzed, and an appropriate wavelet filter is constructed to extract different AM-FM mode functions. The Hilbert transform is conducted, and the signal modal component energy is normalized to obtain vibration feature quantities. A probabilistic neural network (PNN) is used to perform the classification and diagnosis of wind power generator vibration faults. The experiments are constructed based on simulation signals and vibration signals before the proposed method and Hilbert-Huang transform (HHT) are used to perform mode decomposition and to analyze the time-frequency energy spectrum. The experimental results showed that the obtained resolution modes by EWT are within the corresponding time domain signal characteristics. The number of mode decomposition layers is less than that of empirical mode decomposition. No characteristics of false modal are observed. The time-frequency energy spectrum diagram can better reflect the characteristics of original vibration signal than the spectrum based on HHT. The PNN-based vibration fault judgment can achieve an accuracy rate of 90 % with limited training samples.
Research on the ultrasonic testing of defect for LY12 aluminum alloy based on transmission wave in lamb wave
Authors: Chen Xinya , Chen Zhen
Published: May 2017

Aimed at the problem that the ultrasonic testing is applied in defect of LY12 aluminum alloy by using liquid or semi-solid coupling agent, transfer matrix method and gas-solid boundary conditions of ultrasonic wave propagation is used for establishing mathematic model in LY12 aluminum alloy, and this model is solved to obtain the propagation characteristic curve. When cut-off frequency is less than 2 MHz·mm, it has only S0 modal. The simulation result provides proper parameters for ultrasonic testing, in which the incidence angle is 30° and the center frequency is 1 MHz. The different circuit defect for LY12 aluminum alloy is made and detected, and time domain waveform is obtained. The experimental results show that the diameter of the defects has a little influence on the amplitude of the direct wave, defect wave amplitude decreases gradually with the increase of the defect diameter.
Energy harvesting of track-borne transducers by train-induced wind
Authors: Wang P. , Wang Y. F. , Gao M. Y. , Wang Y.
Published: May 2017

A track-borne energy transducer is a smart device for harvesting energy of trains or rail transportation systems. In this paper, the authors extend this application through introducing two scenarios of energy harvesting from train-induced wind. A Computational Fluid Dynamics (CFD) model considering track-borne energy transducer is constructed and simulated. For rail-borne piezoelectric approach, the voltage and air pressure profile of the piezoelectric transducer are recorded, indicating a peak-peak output voltage of 1 V under condition that the bluff train body (metro line vehicle) travels over the rail-borne device at a speed of 5 m/s. For track-borne wind turbine generator, the simulated results indicate that the optimal position of wind turbine locates at the bottom of (under) the bluff body; whereas it locates at the side for the streamlined train. Wind tunnel tests are conducted for understanding the electric characteristics of the track-borne wind turbine harvester. Different setup configurations are compared by changing the wind turbines’ position, types of blades, and types of train body. For large-scale horizontal-axis wind turbine, an average voltage of 48.8 V and an optimal power of 5 W are achieved at 1:20 scaled model, 10 m/s wind speed, and 470 Ohm resistance. For vertical-axis bottom-mounted wind turbine, an average voltage of 2.48 V and an optimal power of 110 mW are achieved at 1:20 scaled model, 10 m/s wind speed, and 56 Ohm resistance.
Application of EMD-WVD and particle filter for gearbox fault feature extraction and remaining useful life prediction
Authors: Liu Xin , Jia Yunxian , He Zewen , Zhou Jie
Published: May 2017

Fault feature extraction and remaining useful life (RUL) prediction are important to condition based maintenance (CBM). In order to realize the fault feature extraction of gearbox vibration signal presenting nonlinear and non-Gaussian, the integration of empirical mode decomposition (EMD) and Wigner-Ville distribution (WVD) are proposed in this paper. Taking the kurtosis as standard, the WVD is applied to some IMFs with larger kurtosis to calculate the time-frequency distribution, with an effective suppress on mode mixing and the cross-term interference. Afterwards, particle filter (PF) with the state space model based on Wiener process is proposed to predict the RUL of gearbox considering degradation feature, gearbox teeth wear and nonlinear and non-Gaussian system. The gearbox life cycle test shows that the EMD-WVD method can extract the valued characteristics of vibration signal accurately, and the particle filter can provide an effective way to predict the RUL of gearbox.
Experimental and numerical investigation on dynamic behaviors of the concrete wall in underground coal mine with hydraulic blasting demolition
Authors: Zhai Xiaowei , Wu Shibo , Li Haitao , Wang Kai , Wang Weigang , Song Xianming
Published: May 2017

In order to investigate the dynamic response and failure modes of concrete wall under hydraulic blasting load in underground tunnels, the fracture mechanism and zoning characteristics of hydraulic blasting of concrete wall was analyzed theoretically. Stress field, displacement field and energy variation laws of concrete wall has been simulated based on the finite element dynamic program LS/dyna. Meanwhile, different experimental conditions on the dynamite, reserved hole parameters such as demolition parameters are designed studied according to the blasting fracturing principle. The effects of stress wave, high pressure gas expansion effect in the dismantling process, application of line of least resistance principle and directional blasting effect control principle are analyzed. Results reveal the FSI effect between concrete wall and the water-dynamite-pore wall and the relationship between parameters of the structure and the dynamite dynamite, the concrete dynamic compressive strength and dynamic tensile strength. Numerical and experimental methods as well as conclusions will provide basis for the blasting demolition of brick concrete wall under similar conditions.
Real-time stall detection of centrifugal fan based on the analysis of symmetrized dot pattern and wavelet packet transform
Authors: Xu X. G. , Liu H. X. , Wang S. L. , Fan Z. Y. , Yang L. J. , Liu S. T.
Published: May 2017

This paper presents a novel stall detection method based on symmetrized dot pattern (SDP) analysis, which detects the starting point of rotating stall timely and accurately during operations of centrifugal fans. To demonstrate the proposed method, experiments were first performed on a G4-73 No. 8D centrifugal fan to measure the aerodynamic pressure signals of the air flow inside the fan during the gradual development of rotating stall. Then, the SDP technique was used to analyze the pressure signals and extract the time-domain characteristics of the pressure signal during the gradual development of rotation stall. Finally, a comprehensive autocorrelation coefficient was defined and employed as the index for real-time stall detection. In addition, to verify the accuracy of detection results, the tested signals were also analyzed off-line by wavelet transform to detect the actual starting point of rotating stall. The comparison results show that the stall detection method based on the symmetrized dot pattern (SDP) analysis can accurately detect the starting point of rotating stall in centrifugal fans within a short period of 0.05 s.
Numerical study on parameter impact on fundamental frequencies and dynamic characteristics of pre-stressed concrete beams
Authors: Cui Kai , Zhao Ting-ting , Gou Hong-ye
Published: May 2017

This paper established 6 kinds of different concrete beams, and 5 kinds of models were applied horizontal pre-stress. Their fundamental frequencies and deflections were numerically computed, and the correctness of numerically computational model was experimentally verified. Fundamental frequencies of 6 kinds of models were 46.23 Hz, 68.45 Hz, 69.36 Hz, 70.46 Hz, 72.11 Hz and 157.73 Hz respectively. Concrete beams without being applied pre-stress had a low fundamental frequency. The fundamental frequency of concrete beams could be obviously improved through internally applying pre-stressed tendons to concrete beams. In addition, the improvement effect of Model 5 was more obvious. When pre-stressed tendons were externally applied to the concrete beam, the fundamental frequency was greatly improved. However, externally pre-stressed tendons would limit the use of concrete beams and increase the cost. When other parameters remained unchanged, the fundamental frequency of pre-stressed concrete beams would gradually increase with the increase of pre-stress. When the pre-stress was the same, fundamental frequencies gradually increased with the increase of eccentricity, the number of circular tendons in composite tendons and concrete strength, and gradually decreased with the increase of counterweight. When the applied load was the same, Model 1 was not strengthened and its deflection was the largest. On the contrary, the model which was applied external pre-stress and its deflection was the smallest, but its use was limited and cost was high. In the strengthening proposals of internal pre-stress, composite tendons were applied to Model 5, and it presented a small deflection. When other parameters remained unchanged and the applied load was lower than a value, the deflection of concrete teams gradually increased with the increase of applied load. On the contrary, the deflection of concrete beam tended to be stable with the increase of applied load. When the applied load was the same, the deflection of concrete beams gradually decreased with the increase of eccentricity, the number of circular tendons in composite tendons and concrete strength, and gradually increased with the increase of counterweight.
Research on the radiation characteristics of aerodynamic noises of a simplified bogie of the high-speed train
Authors: Lan Jun , Han Jaeoh
Published: May 2017

This paper built a simplified bogie model including 2 axles, 2 wheel-sets and frames, and it was then installed on the high-speed train to compute the aerodynamic noise. The computational result showed that bogies made the noise of the high-speed train obviously serious, the noise near the bogie increased obviously, and the maximum sound pressure level increased by 1.3dBA. Based on Lighthill acoustic theories, this paper adopted large eddy simulation (LES) and FW-H (Ffowcs Williams-Hawking) acoustic model to compute numerical solution for the aerodynamic noise of the bogie. The aerodynamic flow behavior of the bogie and the distribution of aerodynamic noises in the far field were analyzed. Fluctuating pressure at the surface of the bogie was obtained and then combined with boundary element method (BEM) to study the aerodynamic noise sources and acoustic propagation characteristics of the bogie. Computational results showed that large eddies were in axles and wheel-sets, and axles mainly caused the phenomenon of Karman Vortex Street. When the bogie ran at the speed of 30 m/s, main frequencies were 278 Hz and 556 Hz, and the main frequency of aerodynamic drag was twice that of aerodynamic lift. In the vertical plane, longitudinal plane and lateral plane, the aerodynamic noise of the bogie had the characteristics of dipole noises. The main directions of radiation were 90° and 270°. The maximum sound pressure level was 57.3 dBA. The main direction of propagation for the aerodynamic noise of the bogie was right above and below the bogie rather than the left side and the right side of the bogie. The aerodynamic noise sources of the bogie were mainly at the second end axle and the surface of wheel-sets close to axles.
Seismic control of a SDOF structure through electromagnetic resonant shunt tuned mass-damper-inerter and the exact H2 optimal solutions
Authors: Sun Hongxin , Luo Yifan , Wang Xiuyong , Zuo Lei
Published: May 2017

This paper proposes a novel inerter-based component dynamic vibration absorber, namely, electromagnetic resonant shunt tuned mass-damper-inerter (ERS-TMDI). To analyze the performances of the ERS-TMDI, the combined ERS-TMDI and a single degree of freedom system are developed. The H2 norm performances of the ERS-TMDI, whose aim is to minimize the root mean square (RMS) value of structure damage under random ground acceleration excitation, are introduced in comparison with the energy-harvesting series electromagnetic tuned mass dampers (ERS-TMDs), tuned mass-damper-inerter (TMDI) and the classical tuned mass damper (TMD). The closed-form solutions, including the optimal mechanical tuning ratio, the optimal electrical damping ratio, the optimal electrical tuning ratio and the optimal electromagnetic mechanical coupling coefficient, are obtained. It is shown that the ERS-TMDI is superior to both the classical TMD and the ERS-TMD systems for protection from structure damage. Specifically, from the frequency-domain analyses, a case study is performed to illustrate the effectiveness, robustness of the ERS-TMDI and the sensitivity to the parameter changes. From the time-domain analyses, four types of earthquakes are studied to demonstrate the performances of vibration suppression.
The Naturalist Turn in Literary and Art Study: Two-Way Interdisciplinarity and the Sciences of Mind
Authors: Kolaiti Patricia
Published: May 2017

In recent years, a bourgeoning area of paradigm-revising scholarly investigation involves what could be referred to as a “Naturalist” or “Cognitive” turn in literary and art study, exploring the interface between theory in the arts and humanities and scientific theory of the type produced in disciplines belonging to the empirical and cognitive paradigm such as linguistics, cognitive science, philosophy of mind and cognitive neuropsychology. In this paper, I will discuss a range of theoretical, epistemic and methodological issues raised by such an interdisciplinary enterprise including the possibility of a genuine methodological merger with the cognitive paradigm, the plea for psychological realism, the extent to which the scientific method is compatible with the nature of literature and art as an investigative object and the need for genuine, two-way interdisciplinary practices in literary and art study. I will also briefly consider the role Relevance Theory might have to play in this interdisciplinary venture as both a pragmatic and epistemological framework.
Pengaruh Jigsaw Dan Motivasi Belajar Pada Mapel Bahasa Inggris “Reported Speech” Terhadap Hasil Belajar Siswa Kelas X SMA Taman Madya Kota Probolinggo
Authors: Indrianie Niken Shali
Published: May 2017

AbstractThis research is aimed to know the result of the study of the students on the English subject “Reported Speech” by using cooperative learning strategies model jigsaw in relation to the students’ motivation. This research is conducted on SMA Taman Madya, Probolinggo city by using quantitative approach. The data of the research is collected from the observation to the teacher, students’ activity, and the ability on English test “Reported Speech”. The source of the data are the students of tenth grade and observation on the school’s activity. The result of this study shows that the cooperative learning model jigsaw is well-applied in parallel to the lesson plan. The students’ activity in a group is well-conducted ad able to follow its function. The skill of the students in the learning and teaching of material and topics to the group is well-conducted and resulted in clear understanding and ability to solve the problem of English “Reported Speech” by the other students, as well as a well-conducted finishing steps and a well-established steps on doing the evaluation to show an enhanced result of study. Keywords: cooperative learning, jigsaw, learning motivation, result of study AbstrakPenelitian ini bertujuan untuk mengetahui hasil  belajar  siswa pada mata pelajaran  bahasa Inggris “Reported Speech” dengan menggunakan pembelajaran cooperative learning model Jigsaw yang dikaitkan dengan motivasi belajar siswa . Penelitian ini dilaksanakan di SMA Taman Madya Kota Probolinggo dengan  menggunakan pendekatan kuantitatif. Data penelitian berupa observasi aktivitas guru,  aktivitas siswa dan kemampuan mengerjakan soal dalam bahasa Inggris “Reported Speech”. Data Penelitian bersumber pada peserta didik kelas X dan observer yang melaksanakan penelitian di sekolah tersebut. Hasil penelitian menunjukkan bahwa pembelajaran cooperative  learning  model Jigsaw  terlaksana dengan baik sesuai dengan sintak pembelajaran yang  direncanakan. Aktivitas setiap siswa yang belajar secara berkelompok dapat berperan dan dapat melaksanakan fungsinya dengan baik. Kemampuan setiap siswa dalam belajar dan mengajarkan materi/pokok bahasan kepada temannya yang lain dalam kelompok dapat berlangsung dengan baik sehingga temannya mampu untuk memahami dan memecahkan masalah bahasa Inggris “Reported Speech” dengan baik, dan pada langkah penyelesaian serta langkah mengerjakan soal evaluasi (tes) dapat terlaksana dengan baik serta menunjukkan hasil belajar yang  cukup meningkat  . Kata kunci: cooperative learning, jigsaw, motivasi belajar, hasil belajar
Writing Factual Report: A Potential Way To Enhance Student’s Critical Thinking Ability
Authors: Anwar Khoirul , Iramawaty Lathifah
Published: May 2017

ABSTRAKTerdapat banyak perubahan yang terlihat jelas diantara penggunaan KTSP dan kurikulum 2013 dimana kurikulum 2013 dirancang dengan lengkap untuk menghasilkan kompetensi siswa yang memiliki kemampuan berpikir kritis. Karena hal ini adalah tantangan bagi para guru, artikel ini bermaksud untuk mendiskusikan dan menganalisis bagaimana menulis laporan faktual dapat meningkatkan kemampuan berpikir kritis para siswa. Pentingnya kemampuan berpikir kritis dan strategi yang digunakan untuk meningkatka kemampuan berpikir kritis siswa juga manjadi salah satu bahasan artikel ini. Tujuan penulisan artikel ini lebih lanjut untuk memberikan deskripsi jelas terhadap kemampuan berpikir kritis dan prosedur yang disarankan untuk menggunakan metode menuliskan laporan faktual pada pengajaran Bahasa Inggris sebagai bahasa asing. Lebih lanjut, menggunakan metode menuliskan laporan faktual secara jelas dapat menmbantu meningkatkan kemampuan berpikir kritis siswa yang merupakan tujuan paling utama dalam pengajaran Bahasa Inggris sebagai bahasa asing pada masa ini. Kata kunci: Laporan Faktual, Berpikir Kritis Kemampuan. ABSTRACTThere are a lot of changes which are quite prominent between KTSP and 2013 curriculum in which the latest one was highlydesigned for producing  students’ competencies to have critical thinking ability. Since this is challenging for teachers, this article is to discuss and analyze about how writing factual report enhances students’ critical thinking. The importance of critical thinking and strategies used to increase students' ability to think critically is also discussed. The aim of this article is further to give aclear description of critical thinking and the suggested procedures of using writing  factual report in EFL teaching. Furthermore, using writing factual report can definitely help enhance students’ critical thinking which is extremely as the most important goal  in EFL teaching nowadays. Keywords: Factual Report, Critical Thinking Ability
Peningkatan Kemampuan Berpikir Kritis Mahasiswa Pendidikan Biologi UMM Melalui Lesson Study
Authors: Wahyuni Sri , Susetyorini Roro Eko , Latifa Roimil
Published: May 2017

ABSTRAKPenelitian ini bertujuan mendiskripsikan peningkatan kemampuan berpikir kritis mahasiswa melalui kegiatan lesson study  serta menemukan Best Practices pembelajaran melalui pelaksanaan lesson study. Metode penelitian ini adalah diskriptif dengan menerapkan  lesson study dengan langkah Plan-Do-See (4 Siklus). Lesson Study dilakukan oleh kelompok dosen Prodi Pendidikan Biologi UMM, pada matakuliah Mikrotehnik dan Embriologi dengan menerapkan pembelajaran proyek dan Two Stay Three Stray pada mahasiswa Semester VI Angkatan 2011. Subyek penelitian mahasiswa program studi pendidikan biologi sem  VI yang berjumlah 30 orang pada tahun ajaran 2013-2014 yang menempuh matakuliah mikroteknik dan embriologi. Parameter kemampuan berfikir kritis meliputi:kejelasan (clarity), tingkat akurasi (accuracy) presisi (precision), relevansi (relevance), logika berpikir yang digunakan (logic), keluasan sudut pandang (breadth) kedalaman berpikir (depth), kejujuran (honesty)tetap, kelengkapan informasi information) dan bagaimana implikasi dari solusi yang dikemukakan (implication).Kesimpulan penelitian ini adalah penerapan pembelajaran proyek pada matakuliah Mikroteknik dapat meningkatkan kemampuan berfikir kritis sebesar 18,5%. Sedangkan penerapan pembelajaran Two Stay Three Stray pada matakuliah Embriologi dapat meningkatkan berfikir kritis sebesar 15%. Best practices Kegiatan Lesson Study di Prodi Pendidikan Biologi Universitas Muhammadiyah Malang adalah adanya kekompakan dan semangat kerja tim dosen dan mahasiswa dalam pemecahan masalah pada matakuliah Mikroteknik dan Embriologi, serta adanya perubahan paradigma pada diri dosen dari teaching menjadi learning. Kata kunci: Lesson study, Kemampuan berfikir kritis, Pembelajaran inovatif  (Pembelajaran Proyek, Two Stay-Two Stray)
FULL PAPER
Authors: PAPER FULL
Published: May 2017

Full Paper Vol. 1 No. 2 November 2015
Analisis Rencana Pembelajaran Guru Matematika di Madrasah Aliyah Bilingual Batu
Authors: Baiduri Baiduri
Published: May 2017

AbstrakTujuan dari makalah ini adalah menganalisis rencana pembelajaran (RPP) guru matematika di Madrasah Aliyah Bilingual Batu, khusunya pada kegiatan inti proses pembelajaran yang akan dilakukan.  Jenis penelitian deskriptif dengan pendekatan kualitatif digunakan untuk maksud tersebut. Seorang guru matematika kelas X dijadikan subjek. Data dikumpulkan melalui dokumentasi dan focus group discussion serta dianalisis secara deskriptif. Hasil analisis memperlihatkan bahwa komponen RPP yang disusun oleh guru sesuai dengan permendikbud Nomor 81A tahun 2013. Pada komponen inti kegiatan pembelajaran guru sudah menggunakan berbagai model, metode dan pendekatan sebagai upaya meningkatkan keterlibatan peran aktif peserta didik dalam proses pembelajaran yang akan dilaksanakan. Kata Kunci: Rencana pembelajaran, kegiatan pembelajaran, matematika.
PENGARUH PENGGUNAAN MODEL PEMBELAJARAN COOPERATIVE SCRIPT TERHADAP HASIL BELAJAR KOGNITIF PADA MATA KULIAH PROTISTA MAHASISWA PROGRAM STUDI PENDIDIKAN BIOLOGI UNIVERSITAS MULAWARMAN, TAHUN AKADEMIK 2015/2016
Authors: Boleng Didimus Tanah
Published: May 2017

AbstrakSebuah penelitian eksperimen semu telah dilaksanakan di Universitas Mulawarman. Penelitian dilaksanakan pada semester genap tahun akademik 2015/2006. Tujuan penelitian adalah untuk mengetahui pengaruh model pembelajaran Cooperative Script terhadap hasil belajar kognitif pada mata kuliah protista. Sampel penelitian adalah mahasiswa pendidikan biologi yang mengambil mata kuliah Protista. Pengambilan sampel dilakukan secara purposive sampling, diperoleh 31 pasang mahasiswa berdasarkan nilai Biologi Umum pada dua kelas. Alat ukur berupa tes uraian, dan alat asesmen berupa rubrik penskroran. Analisis data digunakan uji t untuk sampel berpasangan pada taraf signifikan 5% (p˂0,05). Terkait dengan pengaruh model pembelajaran Cooperative Script terhadap hasil belajar kognitif, analisis dapat menunjukkan terdapat pengaruh yang signifikan; dengan t hitung adalah= 7,26; dan t tabel (dk = 60) adalah 2,00. Penelitian sejenis perlu dilakukan  di masa yang akan datang pada mahasiswa yang mengambil mata kuliah protista, dengan sampel yang lebih besar, agar diperoleh informasi yang lebih.Kata Kunci: Cooperative Script, Hasil Belajar Kognitif, Protista.
PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA-BIOLOGI MENGGUNAKAN MODEL PEMBELAJARAN BERDASARKAN MASALAH DI MADRASAH TSANAWIYAH
Authors: Wardah Al
Published: May 2017

AbstrakMemunculkan keterampilan berpikir kritis siswa perlu didukung oleh suatu model pembelajaran yang tepat, salah satu di antaranya adalah model pembelajaran berdasarkan masalah. Model pembelajaran ini memberikan kesempatan kepada guru untuk menggali keterampilan berpikir kritis dan berpikir kreatif. Penelitian pengembangan ini bertujuan menghasilkan perangkat pembelajaran yang layak, praktis dan efektif. Jenis penelitian pengembangan menggunakan model prosedural. Subjek uji coba lapangan adalah siswa kelas VII F dan VII G MTsN Barabai. Seluruh data diperoleh dari instrumen pengumpulan data dan dianalisis secara deskriptif. Hasil penelitian menunjukkan perangkat pembelajaran tergolong cukup layak berdasarkan 1) hasil uji kelayakan dari tim pakar dan 2) hasil uji keterbacaan siswa menunjukkan bahan ajar dan LKS layak digunakan setelah melalui revisi. Perangkat pembelajaran tergolong praktis, karena: 1) hasil keterlaksanaan perangkat RPP tergolong kategori sangat baik, 2) hasil respon siswa  tergolong kategori sangat respon. Perangkat pembelajaran tergolong efektif karena: 1) hasil belajar kognitif tergolong tuntas sesuai dengan KKM, 2) keterampilan berpikir kritis siswa pada kegiatan membuat rumusan pertanyaan, menentukan prosedur penyelidikan, menganalisa data, dan membuat rumusan kesimpulan tergolong baik, 3) aktivitas guru dalam hal ini masih termasuk dominan,4) aktivita siswa menonjol pada 6 dari 9 parameter. 5) keterampilan psikomotor siswa tergolong baik, 6) perilaku berkarakter meliputi teliti dan bekerjasama tergolong baik, 7) keterampilan sosial siswa yaitu bertanya termasuk kategori baik,  Kata Kunci: perangkat pembelajaran, MPBM, layak, praktis, efektif.