bluuebunny/crossref_metadata_2025 huggingface dataset:
Una historia de la enseñanza de la natación en la Educación Física vista a través de los currículos reales de los profesores de campo en Francia
Authors: Auvray Emmanuel
Published: February 2018

Antecedentes: En educación fïsica, como en otras materias, son conocidos y aplicados los estudios de personas de relevancia nacional e internacional. Sin embargo, los docentes anónimos, que en definitiva son los que aplican el currículo y le dan un carácter real, tienen mucho que decir en este sentido. La inclusión de la natación dentro de la materia de educación física ha sufrido una gran evolución a lo largo de los años, y son los profesores de campo los que más tienen que aportar al respecto. Objetivos: El propósito de este estudio fue dar cuenta de una investigación histórica sobre la evolución, según una población de profesores de educación física anónimos, de prácticas educativas escolares relacionadas con la natación en Educación Secundaria (Bachillerato, Educación Secundaria Obligatoria) durante la segunda mitad del siglo XX. Método: Se ha llevado a cabo una encuesta por cuestionario semiestructurado, completado con los testimonios escritos, y los registros impresos privados y semi-oficiales, donde han participado un total de 158 profesores de diferentes niveles educativos pertenecientes a 25 academinas educativas. Resultados: Se desprende de este estudio una periodización constituida en tres periodos: una natación utilitaria (1945-1959), una natación a la sombra de la natación deportiva federativa (1960-1986), y una natación que gira sobre ella misma (1987-2000). Además, a nivel local, existe una diversidad relativa de currículos reales, que sin embargo siguen estando basados en los currículos nacionales formales de educación física. Conclusiones: Concretamente, la disparidad curricular (real-oficial) parece estar relacionada con un conjunto de variables que dependen a nivel macro de los diferentes recorridos biográficos personales y profesionales de los profesores de campo; a nivel meso a los contextos educativos locales; y a nivel micro a la evolución en la identidad de la educación física y discursos sobre la pedagogía y la didáctica de la natación. Esta disparidad real nos hace cuestionarnos la democratización efectiva de la educación física a nivel nacional frente al lema de la República francesa "libertad, igualdad y fraternidad”.
Exogenous Nitric Oxide Pretreatment Enhances Chilling Tolerance of Anthurium
Authors: Liang Lijian , Deng Yanming , Sun Xiaobo , Jia Xinping , Su Jiale
Published: February 2018

Nitric oxide (NO) is well known for its multifaceted physiological roles as a signaling molecule in plants. Previous studies have indicated that exogenous application of NO may be useful for alleviating chilling injury (CI) in fruits and vegetables. However, the potential role and mechanism of NO in mitigating chilling stress in anthurium (Anthurium andraeanum) remain unclear. In this study, physiological and biochemical analysis were performed to investigate the effects of exogenous NO in alleviating CI in anthurium. Anthurium seedling plants were treated with the NO donor sodium nitroprusside (SNP) at four concentrations (0, 0.2, 0.4, and 0.8 mm) and stored at 12/5 °C (day/night) for 15 day. The results showed that exogenous SNP mitigated the adverse effects of chilling on anthurium, and the most effective concentration was 0.2 mm. In addition, NO effectively improved the CI index, malondialdehyde (MDA) content, electrolyte leakage, photochemical efficiency (Fv/Fm), and chlorophyll loss of anthurium during low temperatures. Pretreatment with SNP also increased the activity of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX); the content of antioxidants including glutathione (GSH), ascorbic acid (AsA), and phenolics; and reduced the accumulation of hydrogen peroxide and O2−. SNP pretreatment at 0.2 mm also significantly promoted the accumulation of proline, increased the activity of Δ1-pyrroline-5-carboxylate synthetase (P5CS), and reduced the activity of proline dehydrogenase (PDH), when compared with control (0 mm SNP→Chilling) under chilling stress. These results indicated that NO could enhance the chilling tolerance of anthurium by elicitation of an antioxidant response and proline accumulation for maintaining cell membrane integrity.
De Novo Transcriptome Assembly of Isatis indigotica at Reproductive Stages and Identification of Candidate Genes Associated with Flowering Pathways
Authors: Bai Yu , Zhou Ying , Tang Xiaoqing , Wang Yu , Wang Fangquan , Yang Jie
Published: February 2018

The appropriate timing of bolting and flowering is one of the keys to the reproductive success of Isatis indigotica. Several flowering regulatory pathways have been reported in plant species, but we know little about flowering regulatory in I. indigotica. In the present study, we performed RNA-seq and annotated I. indigotica transcriptome using RNA from five tissues (leaves, roots, flowers, fruit, and stems). Illumina sequencing generated 149,907,857 high-quality clean reads and 124,508 unigenes were assembled from the sequenced reads. Of these unigenes, 88,064 were functionally annotated by BLAST searches against the public protein databases. Functional classification and annotation assigned 55,991 and 23,072 unigenes to 52 gene ontology (GO) terms and 25 clusters of orthologous group (COG) categories, respectively. A total of 19,927 unigenes were assigned to 124 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, and 80 candidate genes related to plant circadian rhythm were identified. We also identified a number of differentially expressed genes (DEG) and 91 potential bolting and flowering-related genes from the RNA-seq data. This study is the first to identify bolting and flowering-related genes based on transcriptome sequencing and assembly in I. indigotica. The results provide foundations for the exploration of flowering pathways in I. indigotica and investigations of the molecular mechanisms of bolting and flowering in Brassicaceae plants.
Effects of Nighttime Ozone Treatment at Ambient Concentrations on Sensitive and Resistant Snap Bean Genotypes
Authors: Lloyd Kirsten L. , Davis Donald D. , Marini Richard P. , Decoteau Dennis R.
Published: February 2018

The effect of nighttime ozone (O3) exposure, alone and in combination with daytime O3 treatment, was tested on yield of an O3-resistant (R123) and an O3-sensitive (S156) snap bean (Phaseolus vulgaris L.) genotype. Three trials, with exposure durations ranging in length from 14 to 21 days, were conducted in continuous stirred tank reactors located within a greenhouse. The effects of day-only (0800–1900 hr = 11 hours·day−1) and day + night (0800–1900 hr + 2000–0700 hr = 22 hours·day−1) exposure timings were compared. The Fall 2014 trial also tested the effect of nighttime-only (2000–0700 hr = 11 hours·day−1) O3 exposure. Nighttime O3 exposure alone, at 62 ppb, did not cause foliar injury and had no effect on the yield of either genotype. In combination with daytime O3 exposure, nighttime O3 concentrations up to 78 ppb did not impact yields or show a consistent effect on nocturnal stomatal conductance (gsn). When data were pooled across the day and day + night exposures times, mean daytime O3 levels ≥62 ppb caused foliar injury and significant yield decreases in all three trials. Under control conditions, R123 and S156 produced similar pod masses in two of the three trials. In all three trials, R123 produced significantly greater yields by mass than S156 with elevated O3. Nighttime conductance measurements suggested that S156 and R123 have inherently different gsn rates and that cumulative O3 exposure can increase gsn in both genotypes.
Reproductive Biology in Northern Prickly Ash
Authors: Munter David A. , Luby James J. , Anderson Neil O.
Published: February 2018

Zanthoxylum americanum is a common understory species in the northern forests of Minnesota and surrounding regions. It has potential economic importance for its citrus fragrance, pharmacological or insecticidal properties, and produces peppercorns similar to those of the related Zanthoxylum species. Zanthoxylum americanum is a dioecious species but has been reported to have aberrant flowers with autonomous apomixis instead of other potential reproductive barriers. The reproductive biology of Zanthoxylum americanum was investigated in two native Minnesota populations. Determinations of male fertility, whether autonomous apomixis was the predominant floral reproductive mechanism, the presence of seedless fruit (parthenocarpy/stenospermocarpy), and the occurrence of hermaphrodism were made over 2 years. Sex ratios (female:male plants) within each population differed. The mean pollen stainability was 95.8% ± 0.3% (fresh) and 78.6% ± 1.1% (stored 18 months). Parthenocarpy did not occur in either population. Autonomous apomixis was not the primary floral reproductive mechanism. Stenospermocarpy (seedlessness) occurred in 13% of the female fruit clusters. Although commonly described as being dioecious, two additional reproductive strategies were identified: 1) plants with functional protandrous flowers with rudimentary pistils and 2) hermaphroditic flowers with fully functional pistils (protogynous) and anthers. As many as 10% to 30% of the male plants bore at least one fruit/plant each year. One clonal stand had both hermaphroditic and functionally staminate flowers on the same plant. Two evolutionary pathways to dioecy in Z. americanum are proposed.
Do corporate governance and culture matter in cross-border acquisitions? Some Chinese evidence
Authors: Young Chae Won , Byun Jinho , Moon Sub Choi Paul , Yang Ruilin
Published: February 2018

The Chinese market for corporate control has recently gained much academic attention. This research constructs a sample of 159 cross-border acquisitions made by 123 Chinese firms between 2010 and 2014 and relates the roles of governance and culture to the wealth effects of mergers. First, the shareholders of Chinese bidders experience gains upon the announcement of overseas mergers. Second, country- and firm-level governance notably affects the cumulative abnormal returns of Chinese acquirers. Lastly, and however, the cultural distance per Hofstede’s (1980) four cultural dimensions does not appear to be a significant factor in determining the shareholder wealth of Chinese purchasers.
Income smoothing and market performance: empirical study on manufacturing companies listed in Indonesia stock exchange
Authors: Dewi Kencana , Mukhtaruddin  , Agung Prayudha Iqbal
Published: February 2018

In the age of modern accounting, the era where income information is viewed to be no longer the main information that investor seeks, income smoothing is proven to be still existing. This study aims to find why income smoothing (IS) still exists in Indonesia Stock Exchange (IDX) by analyzing its effect on the market performance (MP). The study divides MP into three perspectives: market response is representing current investor; market risk (MR) is representing potential investor; and market value (MV) is representing the management. Purposive sampling method is applied in this study and 65 companies are examined throughout 2011–2013.Using three models to analyze each of the relation, the results shows that IS only significantly affects the MP of companies in the aspect of market response, while the other aspects, MR and MV, yield insignificant results.
Cogging force reduction for tubular permanent magnet linear motor by slots with different sizes
Authors: Hou Pengfei , Huang Kefeng , Wang Puyu , Wang Jinquan , Xu Ye
Published: February 2018

Reduction of cogging force is one of the main concerns of tubular permanent magnet linear motor (TPMLM). In this paper, an analytical calculation of air-gap magnetic density is derived. In addition, an analytical calculation of cogging force is deduced by the energy method. The impact of slots with different sizes on the Fourier coefficients of relative air-gap permanence function is demonstrated. When the nz/4p is the integer, it will produce the cogging force. Therefore, it is practical to reduce the cogging force by changing the Fourier coefficient smaller. The effectiveness of the theoretical analysis is validated by experimental results.
Simulation and feature analysis of modal acoustic emission wave in planar C/SiC composite
Authors: Gao Yong , Xiao Denghong
Published: February 2018

A catastrophic accident may be caused for nearby spacecraft due to the damage occurred in C/SiC thermal protection structure. Therefore, it is significant to analyze the damage feature of the ceramic composite structure. Acoustic emission (AE) is an effective non-destructive testing method which is widely used in aerospace industry. However, some key problems should be solved when the AE technology applied to the engineering field. In this paper some propagation characteristics of AE waves in C/SiC plate were investigated based on the finite element method. Firstly, two kinds of AE sources were established by combining plate wave theory and finite element method. Secondly, a novel simulation model was established which included the mechanical characters of C/SiC composite. Then to simulate the AE source, a stepped load and a dipole force is applied to generate the release of power loss. Additionally, the results of simulation are validated through the AE experiment with the analysis method of Choi-Williams transformation. Finally, the attenuation of AE signals propagation in C/SiC plate is discussed. The results of this research work demonstrated that the simulation method of AE waves in C/SiC structure proposed in this paper can be effectively used to study the wave propagation phenomenon
Research on compressive mechanical properties of metal rubber and its constitutive relation model
Authors: Xu Da , Han Bao Hong , He Wan Heng , Cheng Zhao Gang
Published: February 2018

The static compression test of metal rubber components was carried out by using the control variable method. Influences of technological parameters such as relative density and metal wire diameter as well as structural parameters such as height and bearing area on mechanical properties of metal rubber material were studied. Based on micro-element infinitesimal spring theory, one-dimensional (1D) constitutive model of metal rubber material bearing compressive load was established, and it was found by comparing with experimental data that the curve fitted well and the model was reliable, could accurately describe the mechanical behaviors of metal rubber component when bearing load. The model provides theoretical basis for further study of mechanical properties of metal rubber material. It also guides design and manufacture of metal rubber products as well as its engineering application.
Cyclic performance of stiffened steel plate shear walls with various configurations of stiffeners
Authors: Haddad Omid , Sulong N. H. Ramli , Ibrahim Zainah
Published: February 2018

In this study, experiments were conducted on five specimens of stiffened and unstiffened steel plate shear walls under cyclic loading. First, the specimens and frame design, material properties, and test setup were described. The behaviors of the unstiffened aluminum and steel infill plates were compared with three configurations of stiffened steel plate, i.e., cross-stiffened, circular-stiffened, and diagonally stiffened. The cross-sectional areas of the stiffeners were the same for all stiffened specimens. The results showed that the aluminum infill plate exhibited less ductility. By contrast, the unstiffened steel plate was very ductile, exhibiting a stable hysteresis curve and no tearing. The energy-absorption capacity of the steel plate shear walls increased for all stiffening configurations. Among all configurations, the cross-shaped stiffeners showed considerable increase in shear stiffness, ductility, and energy-dissipation capacity. The plate frame interaction method could predict the ultimate shear strengths of the unstiffened and cross-stiffened panels with good precision. The circular-stiffened steel shear wall seems to behave more desirably in high-amplitude displacements.
A three-DOF ultrasonic motor using four piezoelectric ceramic plates in bonded-type structure
Authors: Yan Jipeng , Liu Yingxiang , Shi Shengjun , Chen Weishan
Published: February 2018

A three-DOF ultrasonic motor is presented in this paper. The proposed motor consists of four piezoelectric ceramic plates and a mental base with a flange that can fix the motor on a rack. The proposed motor takes advantage of a longitudinal mode and two bending modes, different hybrids of which can realize three-DOF actuation. Because of symmetric structure of the proposed motor, the resonance frequencies of the two bending modes are identical. And the resonance frequency of the longitudinal mode was tuned closed to the ones of the bending modes by adjusting the structural parameters in modal analysis. Then trajectories of nodes on the driving foot were obtained by the transient analysis to verify the feasibility of driving principle. Experiments including vibration shape test and output characteristic test were executed. The starting voltages of the rotation along horizontal axes are about 10 Vp-p. Under driving voltages of 200 Vp-p, the output velocities of three DOF can reach 280 rpm, 277 rpm and 327 rpm, respectively. The results of the experiments indicate that the proposed motor is characterized by low starting voltages and high output velocities.
Regularized kernel function parameter of KPCA using WPSO-FDA for feature extraction and fault recognition of gearbox
Authors: He Yan , Wang Zongyan
Published: February 2018

Gearbox is subject to damage or malfunctions by complicated factors such as installation position and operation condition, meanwhile, accompanied by some nonlinear behaviors, which increase the difficulty of fault diagnosis and identification. Kernel principal component analysis (KPCA) is a commonly used method to realize nonlinear mapping via kernel function for feature extraction. However, choosing an appropriate kernel function and the proper setting of its parameter are decisive to obtain a high performance of the kernel methods. In this paper, we present a novel approach combining PSO and KPCA to enhance the fault classification performance. The standard particle swarm optimization (WPSO) was used to regularize kernel function parameter of KPCA instead of the empirical value. In particular, in view of the thought of Fisher Discriminate Analysis (FDA) in pattern recognition, the optimal mathematical model of kernel parameter was constructed, and its global optimal solution was searched by WPSO. The effectiveness of the method was proven using the Iris data set classification and gearbox faults classification. In the process, gearbox fault experiments were carried out, and the vibration signals in different conditions have been tested and processed, and the fault feature parameters were extracted. At last the analysis results of gearbox fault recognition was obtained by KPCA and compared with PCA. The results show that the separability of failure patterns in the feature space is improved after kernel parameter optimized by WPSO-FDA. The problems of single failure and compound fault recognition have been effectively solved by the optimized KPCA.
Hydraulic conductivity estimation via the AI-based numerical model optimization using the harmony search algorithm
Authors: Gorgij Alireza Docheshmeh , Kisi Ozgur , Moayeri Mohammad Mehdi , Moghaddam Asghar Asghari
Published: February 2018

Groundwater as a vital resource for humankind is being debilitated by enormous over-extraction and intensifying contamination. Insightful advancement and protection of this significant resource needs a careful understanding of aquifer parameters. In the present study, the groundwater level was predicted at first, using a hybrid wavelet artificial neural networks and genetic programming (wavelet-ANN-GP) model. The hybrid model results were then evaluated using the performance evaluation criteria including R square, root mean square error (RMSE), mean absolute error and Nash–Sutcliffe efficiency, respectively ranged from 0.81 to 0.97, 0.070 to 4.45, 0.016 to 3.036 and 0.74 to 0.96, which revealed the high applicability of the hybrid model. The groundwater levels were predicted using wavelet-ANN-GP and then entered into the numerical model. Harmony search (HS) was used for the optimization of the numerical model. Hydraulic conductivity (HC) was estimated during the optimization process. Then, the estimated HC was extended throughout the aquifer domain by the empirical Bayesian kriging (EBK) method. Eventually, estimated hydraulic conductivity was compared by defined hydraulic conductivity through the pumping test. The plotted map of the estimated hydraulic conductivity showed about 87.5% conformity to points with distinct hydraulic conductivities obtained from the pumping test. The results proved the applicability of AI-based meta-heuristic optimization models in water resource studies.
Removal of nitrate using activated carbon-based electrodes for capacitive deionization
Authors: Jiang Shaojie , Wang Hongwu , Xiong Guanquan , Wang Xinlei , Tan Siying
Published: February 2018

The removal performance of nitrate using capacitive deionization (CDI) of activated carbon (AC)-based electrodes were studied. The AC electrode was prepared and the effect of cell voltage, flow rate and initial solution concentration on ion removal were investigated. Furthermore, the AC was modified with phosphoric acid (ACP) and the surface structure of AC and ACP were analyzed. The results showed that the specific surface area of AC increased by 10.71% after the modification. The mesopore ratio and micropore ratio increased by 14.69% and 24.06%, respectively. The optimal conditions of AC electrode was a voltage of 1.4 V and flow rate of 20 mL/min while the ACP electrode was a voltage of 1.4 V and flow rate of 10 mL/min. The electrosorption capacity of ACP electrode was improved and the unit of electrosorption load was high to 19.28 mg/L. For the AC or ACP electrode, the nitrate removal efficiency decreases with the increase in the initial feed solutions, but the unit electrosorption load gradually increased with the improvement of initial feed solutions' concentration and the ACP electrode was superior to the AC electrode. Therefore, the ACP electrode would be suitable for the application of CDI on the nitrate removal.
Electrocardiogram Changes with Acute Alcohol Intoxication: A Systematic Review
Authors: Raheja Hitesh , Namana Vinod , Chopra Kirti , Sinha Ankur , Gupta Sushilkumar Satish , Kamholz Stephan , Moskovits Norbert , Shani Jacob , Hollander Gerald
Published: February 2018

Background:

Acute alcohol intoxication has been associated with cardiac arrhythmias but the electrocardiogram (ECG) changes associated with acute alcohol intoxication are not well defined in the literature.

Objective:

Highlight the best evidence regarding the ECG changes associated with acute alcohol intoxication in otherwise healthy patients and the pathophysiology of the changes.

Methods:

A literature search was carried out; 4 studies relating to ECG changes with acute alcohol intoxication were included in this review.

Results:

Of the total 141 patients included in the review, 90 (63.8%) patients had P-wave prolongation, 80 (56%) patients had QTc prolongation, 19 (13.5%) patients developed T-wave abnormalities, 10 (7%) patients had QRS complex prolongation, 3 (2.12%) patients developed ST-segment depressions.

Conclusion:

The most common ECG changes associated with acute alcohol intoxication are (in decreasing order of frequency) P-wave and QTc prolongation, followed by T-wave abnormalities and QRS complex prolongation. Mostly, these changes are completely reversible.
Effectiveness of Platelet Rich Plasma and Bone Graft in the Treatment of Intrabony Defects: A Clinico-radiographic Study
Authors: Jalaluddin Mohammad , Mahesh Jayachandran , Mahesh Rethi , Jayanti Ipsita , Faizuddin Mohamed , Kripal Krishna , Nazeer Nazia
Published: February 2018

Background & Objectives:

Periodontal disease is characterized by the presence of gingival inflammation, periodontal pocket formation, loss of connective tissue attachment and alveolar bone around the affected tooth. Different modalities have been employed in the treatment and regeneration of periodontal defects which include the use of bone grafts, PRP and other growth factors.The purpose of this prospective, randomized controlled study was to compare the regenerative efficacy of PRP and bonegraft in intrabony periodontal defects.

Methodology:

This randomized control trial was carried out in the Department of Periodontics & Oral Implantology, Kalinga Institute of Dental Sciences and Hospital, KIIT University, Bhubaneswar. The study sample included 20 periodontal infrabony defects in 20 patients, 12 males and 8 females. The patients were aged between 25 -45 years(with mean age of 35 years). The 20 sites selected for the study were was randomly divided into 2 groups of 10 sites each. Group A: PRP alone, Group B: Bone Graft.

Statistical Anaysis & Results: Statistical Analysis Was Done Using SPSS (Version 18.0):

Statistical analysis was done usingpaired ‘t’ tests and ANOVA that revealed a significant reduction ingingival index, plaque index, probing pocket depth and gain in clinical attachment level at various time intervalswithin both the groups. Radiographic evaluation revealed statistically significant defect fill (p<0.001) at the end of 6months within both the groups. However, there was astatistically significant difference seen in group B radiographically, when compared to group A.

Conclusion:

Both the groups showed promising results in enhancing periodontal regeneration; however the resultswith bonegraftwere comparatively better, although not statistically significant when compared to PRP alone.
A Review of Trend of Nursing Theories related Caregivers in Korea
Authors: Kim Sung Hae , Choi Yoona , Lee Ji-Hye , Jang Da-El , Kim Sanghee
Published: February 2018

Background:

The prevalence of chronic diseases has been rapidly increased due to population aging. As the duration of care needs increase, the caregivers’ socioeconomic burdens have also increased.

Objective:

This review examines the attributes of caregiving experience and quality of life of caregivers in Korea with a focus on the application of nursing theory.

Method:

We reviewed studies on caregivers’ caring for adult patients published till 2016 in 4 bio-medical research portal websites or data bases. A total of 1,939 studies were identified through the keyword search. One hundred forty five studies were selected by a process; of which, 17 studies were theory-applied. Selected studies were analyzed in accordance with the structured analysis format.

Results:

Quantitative studies accounted for 76.6%, while 22.1% were qualitative studies and 1.3% were triangulation studies. Caregiver-related studies increased after 2000. Most frequently, the caregivers were spouses (28.4%), and most frequently, care was provided to a recipient affected by stroke (22.5%). The 17 theory-based studies described 20 theories (70% psychology theories, 30% nursing theories). The most frequent nursing theory was the theory of stress, appraisal and coping.

Conclusion:

This study sought to better understand caregiving through the analysis of Korean studies on the caregiving experience and caregivers’ QOL and this finding helped presenting empirical data for nursing by identifying the nursing theories applied to the caregiving experience and caregivers’ QOL. The results suggest that the need for further expansion of nursing theories and their greater utilization in the studies of caregiving.
Pengaruh metode latihan dan koordinasi terhadap smash backcourt atlet bola voli yunior putra
Authors: Kristriawan Agung , Sukadiyanto Sukadiyanto
Published: February 2018

Penelitian bertujuan mengetahui: (1) pengaruh antara metode latihan sederhana dan metode latihan kompleks terhadap smash backcourt, (2) pengaruh antara koordinasi tinggi dan koordinasi rendah terhadap smash backcourt, dan (3) interaksi antara metode latihan dan koordinasi terhadap hasil smash backcourt. Metode penelitian eksperimen dengan desain faktorial 2 x 2. Populasi penelitian adalah atlet Klub Bola Voli yunior putra Yuso Sleman dan atlet Klub bola voli yunior putra Yuso Gunadarma. Instrumen yang digunakan adalah instrumen tes koordinasi mata-tangan dan test smash Laveage. Teknik analisis data yang digunakan adalah ANAVA. Hasil penelitian ini menunjukkan bahwa: (1) ada perbedaan pengaruh yang signifikan antara metode latihan sederhana dan metode latihan kompleks terhadap hasil smash backcourt, (2) ada perbedaan pengaruh yang signifikan antara atlet yang mempunyai koordinasi tinggi dan koordinasi rendah terhadap hasil smash backcourt, dan (3) terdapat interaksi antara metode latihan dan koordinasi terhadap smash backcourt.Kata Kunci: metode latihan sederhana, metode latihan kompleks, koordinasi, smash backcourt, bola voli. The effect of exercise method and coordination on the smash backcout of junior athletesAbstractThis study aimed to determine: (1) the effect between simple exercise and complex exercise method on the smash backcourt, (2) the effect between the high coordination and low coordination on the smash backcourt, and (3) the interaction between exercise method and coordination on the smash backcourt. The research is experimental with 2 x 2 factorial design. The population of the research was Volleyball Club Yuso Junior Sleman and Volleyball Club Yuso Junior Gunadarma. The samples were taken with purposive sampling technique. The data were collected through eye-hand coordination test and smash Laveage test modification. The data analysis technique used is the variant analysis (ANOVA). The results of this study indicate that: (1) there is a significant difference between simple exercise method and complex exercise method, (2) there is a significant difference between athletes with high coordination and low coordination, and (3) there is an interaction between exercise method and coordination against smash backcourt.Keywords: simple method, complex method, coordination, smash backcourt, volley ball.
Pengaruh metode latihan dan persepsi kinestetik terhadap keterampilan groundstrokes tenis lapangan pada siswa SD
Authors: Suryono Suryono
Published: February 2018

Penelitian ini bertujuan untuk mengetahui: (1) Perbedaan pengaruh antara metode demonstrasi dan metode audio visual terhadap keterampilan groundstrokes tenis lapangan, (2) Perbedaan pengaruh antara persepsi kinestetik terhadap keterampilan groundstrokes tenis lapangan, dan (3) interaksi metode latihan dan persepsi kinestetik terhadap keterampilan groundstrokes. Penelitian ini merupakan penelitian eksperimen. Populasi penelitian adalah siswa SD Negeri Petinggen dan SD Negeri Terbansari yang berjumlah 75 siswa. Sampel penelitian 40 siswa ditentukan dengan teknik purposive sampling. Pengumpulan data menggunakan tes persepsi kinestetik dan keterampilan groundstrokes. Instrumen dalam penelitian ini adalah horizontal liner space test dan memantulakan bola ke dinding. Teknik analisis data menggunakan ANAVA. Hasil penelitian adalah: (1) ada perbedaan pengaruh yang signifikan antara metode demonstrasi dan audio visual terhadap keterampilan groundstrokes tenis lapangan (2) ada perbedaan yang signifikan keterampilan groundstrokes tenis lapangan antara siswa yang memiliki persepsi kinestetik tinggi dan rendah,dan (3) ada interaksi yang signifikan antara metode latihan dan persepsi kinestetik terhadap hasil groundstrokes tenis lapangan.Kata Kunci: demonstrasi, audio visual, persepsi kinestetik, groundstrokes tenis lapangan. The effect of training method and kinesthetic perception groundstroke skills of elementary school students in tennis AbstractThis study aims to investigate: (1) the difference between the effect of audio-visual methods and the demonstration of the skills of tennis courts groundstrokes, (2) the difference between the effect of kinesthetic perception of the skill of tennis courts groundstrokes, and (3) the interaction of exercise and kinesthetic perception of the skills tennis courts of groundstrokes. This study is experimental. The study population is students Petinggen Elementary School and Elementary School Terbansari totaling 75 students. The research sample of 40 students is determined by purposive sampling technique. Collecting data using kinesthetic perception tests and skills groundstrokes. The instrumen in this study is a horizontal linear space test and memantulakan balls to the wall. Analysis using ANOVA. results show that: (1) no significant difference between the methods and audio-visual demonstration of the skills of tennis groundstrokes (2) there are significant differences between the tennis groundstrokes skills of students who have a kinesthetic perception of high and low, and(3) thereis a significant interaction between training methods and kinesthetic perception of the results of tennis groundstrokes.Keywords: demonstration, audio visual, kinesthetic perception, tennis groundstrokes
Pengembangan model permainan untuk meningkatkan perseptual motorik dan perilaku sosial siswa sekolah dasar kelas bawah
Authors: Ningrum Nurul Fajar Muslimah , Sukoco Pamuji
Published: February 2018

Penelitian ini bertujuan untuk menghasilkan model permainan untuk meningkatkan perseptual motorik dan perilaku sosial siswa sekolah dasar kelas bawah yang sesuai, layak, dan efektif. Model permainan ini diharapkan mampu mengembangkan aspek afektif, kognitif, dan psikomotor, serta dapat dipergunakan oleh guru dalam melaksanakan kegiatan pembelajaran pendidikan jasmani. Ujicoba skala kecil dilakukan terhadap 27 siswa SD N Ambarukmo. Ujicoba skala besar dilakukan terhadap 32 siswa SD N Ngringin dan 34 siswa SD N Puren. Instrumen yang digunakan untuk mengumpulkan data adalah pedoman pengamatan (observasi), pedoman wawancara, catatan lapangan, skala nilai, lembar penilaian uji efektifitas dan penilaian hasil belajar. Teknik analisis data yang dilakukan yaitu analisis deskriptif kuantitatif dan analisis deskriptif kualitatif.  Hasil penelitian berupa model permainan, yang berisikan 6 model permainan, yaitu: (1) permainan karung berantai, (2) permainan egrang berantai, (3) permainan engklek berantai, (4) permainan balok berantai, (5) permainan kelereng berantai, (6) permainan ban berantai. Model permainan disusun dalam bentuk buku pedoman dan dituangkan dalam bentuk DVD. Berdasarkan hasil penilaian para ahli materi dan praktisi, dapat ditarik kesimpulan bahwa model permainan untuk meningkatkan perseptual motorik dan perilaku sosial siswa sekolah dasar kelas bawah yang didesain berkategori baik, sehingga model permainan telah sesuai, layak, dan efektif untuk digunakan. Developing Game Model to Improve Perceptual Motor and Social Behavior of Lower Levels Students AbstractThis study aims to produce a game model for increasing perceptual motor and social behavior under class elementary school students which is appropriate, suitable, and effective. The game model is expected to be able to develop effective, cognitive, and psychomotor aspects, also can be used by teacher in learning process of physical education. Small-scale trial was conducted to 27 students in SD N Ambarukmo. A large trial was conducted to 32 students in SD N Ngringin and 34 students in SD N Puren. The instrument used to collect data were observation guide (observation), interviews guide, field notes, scale values, assessment sheets, an effectiveness test and assessment of the learning outcomes. The data were analyzed using the quantitative descriptive analysis and qualitative descriptive analysis. The results of the research is a game model, including six game models, namely: (1) chained coarse bag game, (2) chained egrang game, (3) chained engklek game, (4) chained block game, (5) chained marble game, (6) chained tube game. The game model is arranged in a guide book and DVD. Based on the evaluation of experts and practitioners, it can be concluded that the game model to increase perceptual motor and social behavior under class elementary school students is categorized good, so that the a game model that has been developed is suitable, effective, and appropriate for use.
Pengaruh model pembelajaran problem solving terhadap kemampuan komunikasi matematis ditinjau dari gender
Authors: Hodiyanto Hodiyanto
Published: February 2018

Tujuan penelitian ini adalah untuk mengetahui: (1) manakah kemampuan komunikasi matematis siswa yang lebih baik antara model pembelajaran problem solving (PS) dan model pembelajaran langsung. (2) manakah kemampuan komunikasi matematis siswa yang lebih baik antara kelompok laki-laki dan perempuan. (3) pengaruh model  pembelajaran PS terhadap kemampuan komuniksi matematis.  Metode penelitian yang digunakan adalah penelitian eksperimental semu. Populasi dalam penelitian ini adalah siswa kelas VII SMP Negeri 02 Mojolaban Sukoharjo. Pengambilan sampel dilakukan dengan teknik cluster random sampling. Instrumen untuk mengumpulkan data adalah tes kemampuan komunikasi matematis. Pengujian hipotesis pada penelitian ini menggunakan analisis anova dua jalan dengan sel tak sama. Berdasarkan hasil analisis jawaban siswa diperoleh bahwa: (1) kemampuan komunikasi matematis siswa lebih baik jika diberikan model pembelajaran PS dibandingkan model pembelajaran langsung (2) tidak terdapat perbedaan kemampuan komunikasi matematis siswa antara siswa laki-laki dan perempuan. (3) model pembelajaran PS berpengaruh terhadap kemampuan komunikasi matematis siswa.
What ‘s wrong with the Asian and African Students’ mathematics learning achievement? The multilevel PISA 2015 data analysis for Indonesia, Japan, and Algeria
Authors: Kartianom Kartianom , Ndayizeye Oscar
Published: February 2018

This research aims at knowing the factors, involving both students and school levels, related to the math learning achievement for students in Indonesia, Japan, and Algeria by using PISA 2015 data. The sample in this study consists of students from three countries that took part in PISA 2015. The three countries chosen are Indonesia, Japan, and Algeria, each respectively having as participants 5.800, 6.411, and 4.460. the findings showed that the sense of belonging of students towards mathematics, the socio-economic status of their families, and the average of school’s social-economic status can predict significantly the students’ math learning achievement for the Indonesia and Japan, while for the Algerian students the socio-economic status is statistically insignificant in predicting their math learning achievement. The outcome of this analysis support the idea that the school attended plays a big role as far as mathematics learning achievement is concerned. To conclude, it should be summed up that the affective characteristics (sense of belonging of students), family background (students’ socio-economic status), and the variable school-level (average socio-economic status of schools) can be among students as far as mathematics learning achievement is concerned.
Recognition of Emotions Conveyed by Touch Through Force-Sensitive Screens: Observational Study of Humans and Machine Learning Techniques (Preprint)
Authors: Heraz Alicia , Clynes Manfred
Published: February 2018

BACKGROUND

Emotions affect our mental health: they influence our perception, alter our physical strength, and interfere with our reason. Emotions modulate our face, voice, and movements. When emotions are expressed through the voice or face, they are difficult to measure because cameras and microphones are not often used in real life in the same laboratory conditions where emotion detection algorithms perform well. With the increasing use of smartphones, the fact that we touch our phones, on average, thousands of times a day, and that emotions modulate our movements, we have an opportunity to explore emotional patterns in passive expressive touches and detect emotions, enabling us to empower smartphone apps with emotional intelligence.

OBJECTIVE

In this study, we asked 2 questions. (1) As emotions modulate our finger movements, will humans be able to recognize emotions by only looking at passive expressive touches? (2) Can we teach machines how to accurately recognize emotions from passive expressive touches?

METHODS

We were interested in 8 emotions: anger, awe, desire, fear, hate, grief, laughter, love (and no emotion). We conducted 2 experiments with 2 groups of participants: good imagers and emotionally aware participants formed group A, with the remainder forming group B. In the first experiment, we video recorded, for a few seconds, the expressive touches of group A, and we asked group B to guess the emotion of every expressive touch. In the second experiment, we trained group A to express every emotion on a force-sensitive smartphone. We then collected hundreds of thousands of their touches, and applied feature selection and machine learning techniques to detect emotions from the coordinates of participant’ finger touches, amount of force, and skin area, all as functions of time.

RESULTS

We recruited 117 volunteers: 15 were good imagers and emotionally aware (group A); the other 102 participants formed group B. In the first experiment, group B was able to successfully recognize all emotions (and no emotion) with a high 83.8% (769/918) accuracy: 49.0% (50/102) of them were 100% (450/450) correct and 25.5% (26/102) were 77.8% (182/234) correct. In the second experiment, we achieved a high 91.11% (2110/2316) classification accuracy in detecting all emotions (and no emotion) from 9 spatiotemporal features of group A touches.

CONCLUSIONS

Emotions modulate our touches on force-sensitive screens, and humans have a natural ability to recognize other people’s emotions by watching prerecorded videos of their expressive touches. Machines can learn the same emotion recognition ability and do better than humans if they are allowed to continue learning on new data. It is possible to enable force-sensitive screens to recognize users’ emotions and share this emotional insight with users, increasing users’ emotional awareness and allowing researchers to design better technologies for well-being.
Supermarket revolution y agricultura californiana: ¿un modelo en expansión?
Authors: Garrapa Anna Mary
Published: February 2018

El artículo analiza los impactos derivados de la transformación del mercado agroalimentario, caracterizado por el creciente poder de las grandes marcas de supermercados, en la estructura productiva local y la organización del trabajo agrícola. Particularmente, se investiga la hipótesis de una progresiva ‘californización’ de la agricultura mediterránea a través de una comparación entre dos territorios citrícolas del sur de Europa: la Llanura de Gioia Tauro en Italia, en profunda crisis económica ya desde la mitad de los años 2000, y el área costera de Valencia en España, actualmente en crisis, pero tradicionalmente muy competitiva.
Editorial
Authors: Ramírez Leyva Elsa
Published: February 2018

Editorial
Editorial
Authors: Abell B. Roberto
Published: February 2018

Editorial
La selección de materiales bibliográficos en bibliotecas universitarias mexicanas
Authors: NEGRETE GUTIÉRREZ MARÍA DEL CARMEN
Published: February 2018

EL TRABAJO PRESENTA PARTE DE LOS RESULTADOS OBTENIDOS EN UNA ENCUESTA REALIZADA EN 30 BIBLIOTECAS UNIVERSITARIA MEXICANAS, SOBRE LA SELECCIÓN DE MATERIALES BIBLIOGRÁFICOS. A PARTIR DEL ANÁLISIS DE LOS RESULTADOS SE OBTIENE UN MARCO DE REFERENCIA DE LA SITUACIÓN QUE PREVALECE EN ALGUNAS BIBLIOTECAS UNIVERSITARIAS CON RESPECTO A LA SELECCIÓN DE MATERIALES DOCUMENTALES Y SOBRE EL ELEMENTO HUMANO QUE PARTICIPA EN ESTA ACTIVIDAD.
Automotivación para leer; descripción de un taller
Authors: TRINIDAD ROMÁNHAZA MA.
Published: February 2018

EXISTEN ESTUDIOS QUE INDICAN QUE LA MAYORÍA DE LAS PERSONAS CREEN FIRMEMENTE QUE LA LECTURA DE LIBROS ES CONVENIENTE, PERMITE LA SUPERACIÓN Y DA PRESTIGIO, SIN EMBARGO NO LEEN. SE CONSIDERA EN ESTE ARTÍCULO, QUE LAS RAZONES QUE INCIDEN CON MAYOR FUERZA SOBRE EL DISGUSTO POR LEER SON LAS EXPERIENCIAS NEGATIVAS DE LA LECTURA QUE SE HAN TENIDO, ASÍ COMO LA CARENCIA DE ESTÍMULOS PARA LEER. POR LO TANTO, EL OBJETIVO DEL TALLER ES FACILITAR EN LOS PARTICIPANTES EL DESARROLLO DE UNA CONDUCTA LECTORA A TRAVÉS DE: (A) TOMAR CON CIENCIA DE CÓMO NOS DESMOTIVAN A LEER NUESTRAS PROPIAS EXPERIENCIAS NEGATIVAS DE LECTURA, (B) ESTIMULAR EL DESEO DE LEER POR MEDIO DE LA CONSIDERACIÓN DE SU VALOR Y TRASCENDENCIA EN LA VIDA PERSONAL, Y (C) EMPEZAR A PROVOCARSE UNO MISMO, EXPERIENCIAS DE LECTURAS GRATIFICANTES PARA QUE QUEDAR MOTIVADO A LEER. EL TALLER ESTÁ DIVIDIDO EN CUATRO PARTES, Y CADA UNA RESPONDE AL PLANTEAMIENTO DE UNA PREGUNTA CENTRAL, A SABER: ¿POR QUÉ NO ME GUSTA LEER? ¿VALE LA PENA LEER? ¿CÓMO PUEDO FORTALECER MI PROPÓSITO DE LEER? ¿CÓMO ES MI NUEVA EXPERIENCIA DE LECTURA?
La formación del bibliotecario mexicano a través del bachillerato y la opción técnica en biblioteconomía
Authors: CALVA GONZÁLEZ JUAN JOSÉ , GARCÍA FUENTES CARLOS COMPTON , VERDUGO S. JOSÉ A.
Published: February 2018

EL DOCUMENTO SE COMPONE BÁSICAMENTE DE CINCO PARTES. EN LA PRIMERA DE ELLAS SE ESTUDIAN LOS ANTECEDENTES Y CARACTERÍSTICAS PRINCIPALES DE LA EDUCACIÓN MEDIA SUPERIOR, NIVEL EN EL CUAL SE ENCUENTRA INSERTADA LA OPCIÓN TÉCNICA MOTIVO DE ESTUDIO. LA SEGUNDA PARTE ANALIZA LAS PROPUESTAS DEL COLEGIO NACIONAL DE BIBLIOTECARIOS SOBRE LA OPCIÓN TÉCNICA EN BIBLIOTECONOMÍA, LAS CUALES, DE ALGUNA MANERA, SIR VEN COMO MODELO PARA EL DISEÑO DE NUEVOS PROGRAMAS Y LA REESTRUCTURACIÓN DE OTROS. LA PARTE TRES DESCRIBE Y ANALIZA LOS CONCEPTOS MÁS IMPORTANTES DE LOS DIFERENTES PLANES DE ESTUDIO DEL BACHILLERATO TÉCNICO QUE EXISTEN ACTUALMENTE EN NUESTRO PAÍS, ASÍ COMO EL ANTEPROYECTO PROPUESTO PARA EL ESTADO DE TABASCO, DESTACÁNDOSE, ASÍ MISMO, LAS SEMEJANZAS Y DIFERENCIAS ENTRE CADA UNO DE ELLOS. LA CUARTA PARTE PRESENTA UN PANORAMA GENERAL DEL MERCADO DE TRABAJO Y LAS PERSPECTIVAS LABORALES DE LOS EGRESADOS DE LA OPCIÓN TÉCNICA EN BIBLIOTECONOMÍA. INCLUYE EL ESTUDIO Y LOS RESULTADOS DE UNA ENCUESTA REALIZADA A LOS EMPLEADOS DE CENTROS BIBLIOTECARIOS, CONSIDERADOS GRANDES CAPTADORES DE PERSONAL BIBLIOTECARIO. FINALMENTE, LA PARTE QUINTA ESTÁ DEDICADA A LAS OBSERVACIONES, CONCLUSIONES Y RECOMENDACIONES GENERALES EN LAS CUALES SE OBSERVA CLARAMENTE LA NECESIDAD DE REESTRUCTURAR CUIDADOSAMENTE LOS PLANES Y PROGRAMAS DE ESTUDIO DE ESTA OPCIÓN TÉCNICA.
Hacia un modelo de representación documental: la técnica de resumir
Authors: PINTO MOLINA MARÍA
Published: February 2018

PARTIENDO DE LA DEFINICIÓN DE RESUMIR Y DE LA TRASCENDENCIA DOCUMENTAL DEL RESUMEN, SE ESBOZAN LAS ETAPAS IMPLICADAS EN EL PROCESO: SELECCIÓN DEL DOCUMENTO, ESTABLECIMIENTO DE OBJETIVOS, PROCESO PROPIAMENTE TAL, Y EVALUACIÓN. SE REFLEXIONA SOBRE LA PRIMERA FASE (LECTURA), SU IMPORTANCIA, TIPOLOGÍAS Y PROCEDIMIENTOS. LA SEGUNDA (ANÁLISIS) ESTÁ MUY CONDICIONADA POR LA LINGÜÍSTICA, CUYOS POSTULADOS CONDUCEN A UNA NUEVA ENTIDAD, EL TEXTO, COMO RESULTADO DE UN PROCESO DE SÍNTESIS- EXPANSIÓN, INVERSO AL ANALÍTICO, QUE TRANSFORMA TODA ESTRUCTURA CONCEPTUAL PROFUNDA EN SU EQUIVALENTE LINGÜÍSTICA O DE SUPERFICIE. SE ESTABLECE EL CONCEPTO DE MACROESTRUCTURA, IDENTIFICABLE CON EL DE RESUMEN, Y LOS PASOS NECESARIOS PARA OBTENER LA, TENIENDO EN CUENTA ASPECTOS LINGÜÍSTICOS Y METALINGÜÍSTICOS. LA TERCERA FASE, DE SÍNTESIS O TRANSFORMACIÓN, ES LA MÁS DELICADA Y CREATIVA, SE VALE DE DOS MECANISMOS FUNDAMENTALES: REFORMULACIÓN Y ASIMILACIÓN. SE DAN ALGUNAS RECOMENDACIONES SOBRE CLARIFICACIÓN, REORGANIZACIÓN Y ESTILO, DE ACUERDO CON CRITERIOS DE FIDELIDAD, CLARIDAD, PRECISIÓN Y ENTROPÍA, A PESAR DE LO CUAL FALTA MUCHO PARA EL LOGRO DE UNA MÁS QUE NECESARIA TEORÍA DE LA REPRESENTACIÓN DOCUMENTAL.