bluuebunny/crossref_metadata_2025 huggingface dataset:
Homework Policy and Student Choice: Findings from a Montessori Charter School
Authors: Scott Catherine M , Glaze Nelda
Published: November 2017

The use of homework has been a controversial topic in education for many years: what types of homework to give, how much, and how often. In previous years, Ocean Montessori School (a pseudonym), the site of this study, offered homework like that of traditional public schools, such as worksheets and rote skill practice. Feeling conflicted about the misalignment between traditional homework and Montessori practices, the school administration changed the homework policy for the 2016–2017 academic year. The new policy encouraged students to choose what they wanted to do each night for homework. This study examines the views and practices of the teachers, students, and parents involved in the new homework policy. Data were collected from parent surveys, teacher focus groups, student interviews, observations, and student work samples. The findings indicate that, although students enjoyed the proposed homework change, it lacked sufficient structure for parents, and students needed support from teachers and parents to engage in meaningful homework tasks.
From the editor
Authors: Murray, PhD Angela K.
Published: November 2017

Second issue in the third volume.
The influence of phacoemulsification on various corneal layers in patients with pseudoexfoliation syndrome assessed with confocal in vivo microscopy
Authors: Potemkin Vitaly V. , Varganova Tatyana S. , Terekhova Irina V. , Ageeva Elena V.
Published: November 2017

Phacoemulsification (PHACO) is the basic procedure of cataract extraction.

Purpose. To assess the impact of PHACO on corneal epithelium layers in patients with pseudoexfoliation syndrome (PEX) by confocal in vivo microscopy.

Methods. 24 patients with PEX syndrome and 18 patients without it were enrolled in the prospective study. In vivo confocal microscopy was performed with assessment of cellular density in corneal epithelial layers, degree of its desquamation, degree of Bowman membrane stiffening and dendritic cells density.

Results. The epithelial cells density didnt change significantly in groups. Confocal microscopy showed high density of dendritic cells and marked desquamation of the epithelium in patients with PEX (p 0,05) after PHACO.
Scleral capsule biophysical properties in the prognosis of the stabilizing effectiveness of orthokeratological myopia correction
Authors: Tarutta Yelena P. , Iomdina Yelena N. , Toloraya Rusadani R. , Kruzhkova Galina V.
Published: November 2017

Purpose: determine the impact of biophysical properties of the scleral capsule on the stabilizing effect of orthokeratological correction in progressive myopia.

Material and methods. In 57 patients (114 eyes) aged 8-18 (average age 12.5 0.6 years) with myopia from 1.0 to 7.0 D, acoustic scleral density (ASD) was tested. All patients used (during different terms) orthokeratological (OK) lenses Contex OKE-System during the night time. To measure ASD (in conventional units) we used digital analysis of ultrasound tissue histograms obtained with a multifunctional ultrasound diagnostic device Voluson 730 Pro (Kretztechnik AG) with a linear frequency sensor of 10 to 16 mHz. ASD was measured in the posterior pole and in the superior temporal quadrant of the equatorial zone. The anteroposterior axis (APA) was measured by ultrasound biometry using an ultrasound device A/B Scan System Model 837 (Allergan Humphrey, USA). Myopia progression was found in 18 eyes of 9 patients with APA increase over 0.1 mm in 6 months, i. e. in 15.5% of cases, while the remaining 48 patients (96 eyes) showed no myopia progression over the follow-up period.

Results. APA was less in eyes with progressive myopia as compared to those with stabilized myopia, both in the equatorial and the posterior pole zones. In progressive myopia, mean APA was 213 3.6 units in the posterior pole and 208 2.19 units in the equatorial zone. In cases of stable myopia, APA was 2.1% higher in the posterior pole area (217 1.3 units) and 1.86% higher in the equatorial area (212 1.4 units). On average, APA in stable myopia was 4 2.0 units higher than in progressive myopia (р 0.05).

Conclusion. The APA parameter could serve as a prognostic criterion for the myopia course by OK-correction, and as an indicator for choosing treatment tactics.
Adli Olgu Bildirimiyle İlgili İkilemlerde Hekimlerin Tutumları
Authors: Can İsmail Özgür , Direk Neşe , Özdemir Mehmet Hakan
Published: November 2017

Introduction: Double liability of health professionals occurs in situations in which decleration of forensic case is required. Medical doctors may experience conflicts between legislation and ethical principles. In this study, we aimed to explore the level of knowledge about forensic case declaration of medical doctors working at the XXX Medical Center. Also, we aimed to determine their attitudes and behaviours towards the situations in which ethical principles and legislation conflict is present to their knowledge.  
Methods: We used a 22-item questionnaire including items to evaluate the definition of a forensic case, liability of declaration of forensic case, knowledge about legislation and ethical principles, attitudes and behaviour towards the conflicting situations. In total, 106 medical doctors were evaluated. 
Results: Sixty-two percent of medical doctors follow legislation and 35% of them follow ethical principles when they face with conflicting situations.
Discussion: We discussed situations in which medical and ethical principles contradict and agree with legislation. We believe that such discussion would be helpful to attitude changes in conflicting situations.
The sea-ice detection capability of synthetic aperture radar
Authors: Xie Tao , Zhao Li , Perrie William , Fang He
Published: November 2017

Climate change, increasing activities in areas like offshore oil and gas exploration, marine transport, eco-tourism,in additional to the usual activities of northerners resident are leading to reductions in sea ice. Therefore, there is an urgentneed for improvement in the sea ice detection in polar areas. Starting from the mechanism of electromagnetic scattering,based on an empirical dielectric constant model, we apply EM multi-reflection and transmission formulas for coefficientsbetween the air-ice interface and sea water-ice interface to develop a model for estimating the capability of detection of seaice and ice thickness based on a pulse radar system, synthetic aperture radar (SAR). Although the dielectric constant of seaice is less than that of sea water, this model can provide a rational methodology as the normalized radar cross section (NRCS)of sea ice is larger than that of sea water due to multiple reflections. The numerical simulations of this model showed thatthe convergence rate is rapid. With 3 or 4 reflections and transmissions (depending on temperature, salinity, and dielectricconstants of sea ice and water), truncation errors can be satisfied using theoretical considerations and practical applications.The model is applied to estimate the capability of SAR to discriminate ice from water. The numerical results suggested thatthe model ability to measure ice thickness decreases with increasing radar incident angles and increases with increasingradar pulse width. Reflection and transmission coefficients decrease monotonically with ice thickness and are saturated forice thicknesses above a certain critical value which depends on SAR incidence angle, frequency and dielectric constantsof sea ice. The capability to detect ice thickness for given different bands of pulse radar widths can be estimated with thismodel.
Design-based research as an informal learning model for choral conductors
Authors: Cooper Naomi
Published: November 2017

The number of community choirs continues to grow, and literature endorsing the benefits of choral singing for physical, mental and emotional health and well-being is rapidly expanding, meaning that the professional development of community choral conductors is in the public interest.
However, research on choral conductor education remains limited. Theoretical perspectives on choral conductor training presented by Varvarigou and Durrant (2011) have provided a useful framework for conceptualizing a formal training model. As opportunities to study using such a model are not
widely available in Australia and other locations, it is pertinent to consider alternative methods for community choral conductors to learn the craft and develop their skills. A design-based research model has been proposed as a possible format for learning choral conducting and the case study
of the author's own practice reported here reveals its effectiveness. The design-based research structure, incorporating observation and interview with ten professional choral conductors, as well as cycles of design, intervention and evaluation is proposed as a possible informal learning approach
for other choral conductors.
Exploring the relationship between validity and comparability in assessment
Authors: Crisp Victoria
Published: November 2017

This article discusses how comparability relates to current mainstream conceptions of validity, in the context of educational assessment. Relevant literature was used to consider the relationship between these concepts. The article concludes that, depending on the exact claims being
made about the appropriate interpretations and uses of the results of an assessment, several comparability concerns fall within the remit of validation. The current exploration supports the addition of comparability to validation studies and may be useful in the context of a growing emphasis
on the provision of validity evidence for public examinations.
Korelasi Hasil dan Komponen Hasil Padi Hibrida di Dua Lokasi Pengujian
Authors: Kartina Nita
Published: November 2017

One of the objectives in rice breeding is to increase grain yield. The research was to evaluate numbers of hybrid rice genotypes and also to obtain the information about grain yield correlation main, grain yield component from numbers of hybrid rice genotypes and influencial character as selection criteria. The experiment conducted in the second season (MT II) of 2013 at Cilacap, Central Java province and in Malang, East Java province by using Randomized Complete Block Design (RCBD) with four replications. The genetic materials used were 18 hybrid rice genotypes and two check varieties namely Hipa8 and Ciherang. The results showed that grain yield had been effected by location, genotypes and both interactions. Hipa8 give yield average 9 t/ha while Ciherang 8.78 t/ha. There were two hybrid rice genotypes have equal yield statitistically with both check varieties. The hybrids were A7/BH25B-1B(9.13 t/ha) and IR58025A/CRS516 (9.15 t/ha). Based on path analysis numbers of empty grain, seed set, plant high and number of productive tillers have direct effect to yield with path coefficient of 0.0437; 0.3114; 0.,1952 and 1.931.These characters could be used as selection criteria.
Pemanfaatan Pembenah Tanah dan Mikroba Pelarut P untuk Meningkatkan Efektivitas Pupuk NPK pada Usahatani Jagung di Lahan Kering Masam
Authors: Soelaeman Yoyo , Maswar Maswar , Haryati Umi
Published: November 2017

Maize farming on an acid upland soil generally gives high priority to the use of chemical/NPK fertilizers. Application of organic soil amendments and P (phosphate) solubilizing microbes in maize farming on an acid upland soil were expected to substitute the use of NPK fertilizer without reducing the yields. The research aims was to study the effectiveness of biochar, cow dunk and P solubilizing microbes applications to substitute NPK fertilizers application as shown on the growth and productivity of maize (var. P 27), Relatively Agronomic Effectivenes (RAE) and B/C ratio. The research was conducted from January to June 2014 on an acid upland soil at Tamanbogo Experimental Farm, East Lampung District using randomized block design with four replications. The treatment consisted of Control (T1), NPK fertilizer recommendation dose (T2); biochar 5 t/ha + 50% of NPK recommendation dose (T3); P solubilizing microbes 5 g/plant + 50% of NPK recommendation dose (T4); Cow dunk 5 t/ha + 50% of NPK recommendation dose (T5) and biochar 5 t/ha + P solubilizing microbes of 5 g/plant + cow dunk 5 t/ha + 50% of NPK recommendation dose (T6). The results showed that the combination of NPK fertilizer at a dose of 50% of NPK recommendation + cow dunk at a dose of 5 t/ha (T5), showed the best growth and productivity of P27 maize with B/C ratio of 2.10.
Preferensi Wereng Batang Cokelat terhadap Varietas Padi dan Ketahanan Varietas Padi terhadap Virus Kerdil Hampa
Authors: Suprihanto Suprihanto , Somowiyarjo Susamto , Hartono Sedyo , Trisyono Y. Andi
Published: November 2017

Rice ragged stunt virus (RRSV) is transmitted by brown planthopper in the persistent manner. This disease in recent years has become a serious problem in Indonesia and some other countries, such as China, Vietnam, Philippines, and Thailand. Disease control is usually conducted by the vector control using insecticides, so often causes an environmental pollution. An alternative control method is using the environmentally friendly of resistant varieties. The purpose of this study was to determine the level of preference of brown planthopper (BPH) to some varieties and rice germplasms, the resistance of several varieties against rice ragged stunt virus (RRSV) disease and its effectiveness as an inoculum source of virus (RRSV). A total of 15 varieties of rice were used in preference test of BPH and resistance test to RRSV. The test for resistance varieties to RRSV was conducted by transmission of 2nd instar of BPH for 3 days of acquisition feeding period, 10 days incubation period and 24 hours inoculation period with population density of 3 BPH/plant. Disease index was calculated and used to determine the level of plant resistance. Varieties that showed resistant, moderately resistant and susceptible responses were selected and were used as a source of inoculum to be transmitted on to TN1 variety susceptible check variety to know the effectiveness of varieties as source of virus inoculum. The results showed that of the 15 varieties tested, Situ Bagendit, Utri Merah, Mentik Wangi, Mahsuri, and Inpari 1 each was less favored by BPH to settle and to multiply. Mentik Wangi, Tetep, Utri Merah, and Swarnalata each showed resistant response to RRSV. Transmission test to susceptible variety (TN1) showed that the variety of Situ Bagendit, Inpari 13, Mentik Wangi, and Tetep each has a fairly low effectiveness as a source of inoculum as indicated by the lower percentage of infection and disease index on the transmited test plants.
Kelayakan Finansial Penerapan Teknologi Budi Daya Jagung pada Lahan Sawah Tadah Hujan
Authors: Syuryawati Syuryawati , Faesal Faesal
Published: November 2017

Cultivation of maize applying integrated crop management approach (ICM) is an attempt to obtain higher productivity and better income for farmers, through an optimum production efficiency. Research was conducted to study the feasibility of the recommended maize production technology by verifying its selected components on the rainfed area. The components included: plant population, planting method, and rates of fertilizers. The research was conducted in Pangkep and Barru on rainfed areas, involving farmers’ groups as participants, each site from May to September 2012, and July to October 2012, respectively. Results indicated that the optimum rate of N fertilizer on the rainfed was 202.5-225 kg N/ha to increase farmer’s income. Plant population of 66,666 plants/ha was considered optimum on plant spacing of 75 cm x 20 cm or paired rows of (100-50) cm x 20 cm, each giving yield and benefit of relatively similar. Hybrid varieties evaluation indicated that Bima-3 Bantimurung produced higher yield than did Bisi-2, the highest yield was 12.07 t/ha with the benefit of Rp 22,457,625/ha. The MBCR in Pangkep was 8.31 and in Barru was 7.50. The cost of production per kg of grain of Bima-3 Bantimurung was lower, at Rp 640-750/kg. Integration technology components comprise of fertilizers, planting method, and superior variety is recommended for an efficient and profitable maize farming on the rainfed areas.
Tanggap Kedelai Hitam terhadap Cekaman Aluminium pada Kultur Hara
Authors: Pujiwati Hesti , Ghulamahdi Munif , Yahya Sudirman , Aziz Sandra Arifin , Haridjaja Oteng
Published: November 2017

Al-stress on soybean causes inhibited root growth. Root length sensitivity index might be an indicator of roots tolerance to Alstress. Hematoxylin staining can be used to visualize the movement of Al in plant root tissues. This study was aimed to determine the tolerance level of soybean genotypes to the gradual Al concentrations. The experiment was conducted from February to April 2014, at the greenhouse in Cikabayan Experiments Garden, IPB, using a 4 x 3 factorial treatments in a completely randomized design, three replications. The first factor was the concentration of Al ie: without Al (A0); 0.5 mM Al (A1); 0.7 mM Al (A2) and 0.9 mM (A3). The second factor was the soybean varieties including: Tanggamus, Cikuray, and Ceneng. The observation of variable included root length sensitivity index based on hematoxylin staining, demonstrating the movement of Al on the tolerance and sensitive varieties. Results showed that: 1) Tanggamus was tolerance at 0.5 mM Al concentration and was moderate at 0.7 and 0.9 mM Al, 2) Cikuray was tolerance to a concentration up to 0.5 mM and was moderate at 0.7 mM Al but was sensitive to the concentration of 0.9 mM Al, 3) Ceneng was sensitive at concentration of 0.5 to 0.9 mM Al, 4) Staining hematoxylin indicated the root tissue advanced damages and darker blue color on the susceptible varieties, in comparison with the tolerant ones.
Interaksi Genotipe x Lingkungan untuk Hasil Gabah Padi Sawah
Authors: Sitaresmi Trias , Gunarsih Cucu , Nafisah Nafisah , Nugraha Yudhistira , Abdullah Buang , Hanarida Ida , Aswidinnoor H. , Muliarta I.G.P. , Daradjat Aan Andang , Suprihatno B.
Published: November 2017

Grain yield of rice is determined by genotype (G), environment (E), and interaction between genotype x environment (G x E). Variety can achieve its maximum yield potential if it is grown in suitable environments. This study was aimed to determine the adaptability and the yield stability of rice genotypes grown in different environments. Sixteen rice genotypes were tested using RBD in 16 sites during the wet season of 2010/2011, and dry season of 2011. The tested rice lines were developed for resistance to pest and diseases. The experiment unit was 4 m x 5 m of plot, plants were fertilized with urea, SP36, and KCl at rates of 250 kg/ha, 100 kg/ha, and 100 kg/ha, respectively. Variable observed was grain yield per plot. Combined analyses of variance showed that there was no lines yielded higher than did check variety Conde. The AMMI analysis showed that the largest variation was contributed by the environment factors (76.49%), genotype x environment interactions (17.55%), and the smallest was contributed by the genotypes (5.97%). Data exploration using boxplot method indicated that the low contribution of the genotype x environment interaction variance in this study was due to the high degree of similarity of yield potentials among the genotypes, and due to high similarity of environmental conditions of the sites.Based on the analysis of AMMI 2, lines B12743 - MR-18-2-3-8, IPB107-F-82-2-1, and Conde was each classified as widely adapted genotypes, while G8, IPB107-F-27-6-1, and BIO111-2-BC-PIR-3714, each was considered as genotype having a specific adaptation.
PHARMACOLOGICAL THERAPY OF HEPATOCELLULAR CANCER PRACTICAL ISSUES AND SOLUTIONS
Authors: Breder V. V. , Laktionov K. K. , Davydov M. I.
Published: November 2017

Pharmaceutical therapy of hepatocellular carcinoma represents a major clinical issue of debate in modern oncology. Until now, Sorafenib remains the only option for the management of locally advanced and metastatic hepatocellular carcinomas, which increases the overall survival of patients. In the absence of alternative treatment, the oncologist understanding of the place, time, the strategic goal and tactical objectives of the pharmaceutical therapy of hepatocellular carcinoma at different stages of cancer is of great importance. The article considers the practical aspects of the Sorafenib therapy of hepatocellular cancer in various clinical situations, and proposes algorithms of accompanying therapy for the underlying liver pathology. It presents the results of Regorafenib therapy, a new multi-kinase inhibitor, which significantly increases survival in the second line therapy of sorafenib-resistant hepatocellular  carcinoma. The options  of  pharmaceutical therapy for hepatocellular  carcinoma using cytotoxic and molecular-directed medicines, prospects of modern immunotherapy are discussed.
THE EFFICACY OF POSACONAZOLE FOR PROPHYLAXIS OF INVASIVE MYCOSES IN PATIENTS WITH ACUTE MYELOID LEUKEMIA
Authors: Klyasova G. A. , Okhmat V. A. , Parovichnikova E. N. , Gribanova E. O. , Troitskaya V. V. , Savchenko V. G.
Published: November 2017

Efficacy of posaconazole for prophylaxis was evaluated in 77 chemotherapy cycles in 59 patients with acute myeloid leukemia (AML) aged 39 (17–62) years from 2012  till 2017. Posaconazole was given in oral suspension 200 mg three times a day after meal during chemotherapy cycle or on 1st  day after the cycle. Administration of posaconazole predominated in patients with de novo AML (84.5%) on 1st induction cycles (66.3%). Neutropenia was present in all patients with median duration of 22 days. Median duration of prophylaxis was 21  (2–57)  days. Posaconazole prophylaxis was interrupted in 28  (36.4%) of 77 cases, mainly due to diarrhea (28.6%). In 17 (61%) of 28 cases prophylaxis was resumed within a median of 3 days. In 72 (93.5%) of cases duration of posaconazole prophylaxis was ≥ 7 days, in 5 (6.5%) cases < 7 days. Efficacy of prophylaxis was evaluated in cases of posaconazole duration ≥ 7 days. Invasive pulmonary aspergillosis (probable) was in 2 (2.7%) of 72 cases. Administration of posaconazole with duration ≥ 7 days was in 46 cases on chemotherapy cycle, in 26 cases – on first day after the cycle. Patients using Posaconazole after a course of chemotherapy in comparison with patients receiving the drug in the first days of the course had significantly less interruptions of prophylaxis (11,5% vs 41,3%, p=0.009) and a reduction in duration of Posaconazole using (19 days vs 27 days, p=0.007).One case of invasive aspergillosis was registered in each group.

We confirmed the  efficacy of posaconazole  for prophylaxis of invasive mycoses  in patients  with AML. Administration of posaconazole prophylaxis on first day after the end of chemotherapy cycle results in saving of drug by reducing duration of posaconazole using by 8 days and does not increase the incidence of invasive mycoses.
REAL-LIFE CLINICAL UTILITY OF RAMUCIRUMAB FOR THE TREATMENT OF PATIENTS WITH DISSEMINATED GASTRIC ADENOCARCINOMA: PRELIMINARY REVIEW OF THE EXPERIENCE OF BLOKHIN RUSSIAN CANCER RESEARCH CENTRE
Authors: Besova N. S. , Titova T. A. , Gorbunova V. A. , Gordeeva O. O. , Tryakin A. A. , Snegovoy A. V. , Nasyrova R. Yu. , Rumyantsev A. A. , Voroshilova E. A. , Artamonova E. V.
Published: November 2017

Angiogenesis   has  become  an  important  target  in  the  treatment  of  solid  tumors  and  anti-angiogenic   agents   are a  promising  approach  to  cancer  therapy.  Ramucirumab, an  anti-angiogenic   agent   specifically  targeting  vascular endothelial  growth factor receptor-2  (VEGFR-2). In April 2014, the FDA approved ramucirumab as a single  agent  or in combination with paclitaxel  for treatment of advanced gastric or gastroesophageal junction adenocarcinoma (GC) that has progressed on or after prior fluoropyrimidine – or platinumcontaining chemotherapy based on data of REGARD and RAINBOW trials.

We evaluated the progression free (PFS), overall survival (OS) and safety of ramucirumab in patients (pts) with advanced GC in routine clinical practice From June 2016  to 20 Sep 2017  40 pts with advanced GC were treated with ramucirumab in the second line treatment as single  agent (8 pts) or in combination with paclitaxel  (26 pts) in N.N.Blokhin National medical research center of oncology.

Median PFS (MPFS) and median OS (MOS) was 1,8  and 7,6 mons for monotherapy group. For combination group MPFS was 5,02  mons, MOS was not reached. Ramucirumab had an acceptable safety profile Our data are similar to the data of REGARD and RAINBOW trials.
CLINICAL CASE OF SUCCESFUL APPLICATION OF KADSYLA APPLICATION IN METASTATIC HER2 POSITIVE BREAST CANCER
Authors: Sakaeva D. D.
Published: November 2017

A clinical case of trastuzumab emtansine in therapy line 4 in patient with metastatic HER2positive breast cancer is provided. After 10  courses of targeted therapy by the drug a complete  response to the therapy was obtained. By results of PET CT conducted in the period from December 2015  to September 2017 the complete response is preserved.
Structure modal optimization of a strapdown inertial navigation system for an electric helicopter using an adaptive surrogate model
Authors: Guo Shuzhen , Zheng Xiangming , Ang Haisong
Published: November 2017

The purpose of this research is to prove the eventuality of using a novel adaptive surrogate model for optimization problems. The adaptive surrogate model is based on iteration sampling and extended radial basis function (ERBF). This method improves the precision by a means that new sample points is placed in the blank area and all the sample points is uniformly distributed in the design region. The precision of the surrogate model is checked using standard error measure to determine whether updating the surrogate model or not. Since the prediction of modal frequencies require structure modal simulations. In order to decrease the number of computer simulations, a Multi-Island GA approach is combined with the adaptive surrogate model to find the optimum modal frequencies of a strapdown inertial navigation system for electric helicopters. The strapdown inertial navigation system is comprised of damping material, counterweight material and inertial navigation sensor. This is a multi-objective functions optimization problem since the modal frequencies are considered from mode 1 to mode 6 in this paper. Several weights of multi-objective functions are utilized to research the modal frequencies. The whole number of 15 sampling points is picked to build the primary surrogate model using Latin hypercube sampling (LHS). The results of adaptive surrogate model show that two new sampling points are needed to reform the precision of the surrogate model under the condition of 2 % confidence bounds. The structure modal optimization results show that the choice of the weights for the multi-objective functions has a major effect on the final optimum modal frequencies. Time- and frequency-domain analysis indicated that the optimum modal frequencies are far away from the excitation frequencies to avoid strapdown inertial navigation system resonance as far as possible.
Dynamic analysis of reciprocating compressor with clearance and subsidence
Authors: Xiao Shungen , Liu Shulin , Cheng Shouguo , Xue Xiaogang , Song Mengmeng , Sun Xin
Published: November 2017

In this paper, the reciprocating compressor with clearance and subsidence of the crosshead is studied, considering the varying cylinder pressure. To investigate the nonlinear dynamical behaviors of the reciprocating compressor precisely, a novel dynamic model of the reciprocating compressor of single cylinder with clearance and subsidence for the varying cylinder pressure is established based on the Lagrangian approach. It is demonstrated that different clearance sizes, subsidence sizes and crankshaft angular velocities can affect the dynamic response of the crosshead in the horizontal direction, respectively. The analysis results of dynamic response illustrate that with the increase of clearance sizes and subsidence sizes, the influence of crosshead displacement, velocity and acceleration increase, but the effect of clearance is much stronger than subsidence. Fast Fourier transformation is also applied to analyze the frequency spectrum of the system response. Moreover, the stability of the motion is studied using phase trajectories, maximum Lyapunov exponents and Poincaré sections. Numerical solution results show that clearance sizes, subsidence sizes and crankshaft angular velocities change the dynamical behavior of the system. Through calculation of the maximum Lyapunov exponents and Poincaré portraits, the results reveal that the reciprocating compressor system is characterized by chaotic behavior with the faults of clearance and subsidence. Furthermore, with the increase of the clearance sizes and the crankshaft angular velocities, the shapes of chaotic phase trajectories have changed greatly, and varied inconspicuously with the increase of subsidence sizes in reciprocating compressor system.
Piezoelectric kinematic pairs with several DOF in miniature high-resolution piezoelectric robots
Authors: Bansevicius Ramutis , Kulvietis Genadijus , Jurenas Vytautas , Janutenaite-Bogdaniene Jurate
Published: November 2017

This paper presents results on the development and investigation of new miniature robots with increased number of degrees of freedom, based on the application of piezoelectric kinematic pairs with multi-DOF. The schematics of technologically advanced multi-DOF active kinematic pairs are presented and the details of their control are explained. The structure control of multi-DOF active kinematic pairs is based on sectioning of electrodes of the piezoelectric actuators and allows selecting desirable types of oscillations and speeds of links. Three modifications of piezoelectric robots with 6 and 15 DOFs are provided, together with their resolutions and responses to step inputs. Modal and harmonic analyses were performed and displacements of contact points were obtained. Trajectory planning algorithms are developed based on the numerical results.
Evaluation and application of alternative rainfall data sources for forcing hydrologic models in the Mara Basin
Authors: Alemayehu Tadesse , Kilonzo Fidelis , van Griensven Ann , Bauwens Willy
Published: November 2017

Accurate and spatially distributed rainfall data are crucial for a realistic simulation of the hydrological processes in a watershed. However, limited availability of observed hydro-meteorological data often challenges the rainfall–runoff modelling efforts. The main goal of this study is to evaluate the Climate Forecast System Reanalysis (CFSR) and Water and Global Change (WATCH) rainfall by comparing them with gauge observations for different rainfall regimes in the Mara Basin (Kenya/Tanzania). Additionally, the skill of these rainfall datasets to simulate the observed streamflow is assessed using the Soil and Water Assessment Tool (SWAT). The daily CFSR and WATCH rainfall show a poor performance (up to 52% bias and less than 0.3 correlation) when compared with gauge rainfall at grid and basin scale, regardless of the rainfall regime. However, the correlations for both CFSR and WATCH substantially improve at monthly scale. The 95% prediction uncertainty (95PPU) of the simulated daily streamflow, as forced by CFSR and WATCH rainfall, bracketed more than 60% of the observed streamflows. We however note high uncertainty for the high flow regime. Yet, the monthly and annual aggregated CFSR and WATCH rainfall can be a useful surrogate for gauge rainfall data for hydrologic application in the study area.
Brasicáceas y perspectivas de control biológico del insecto plaga Plutella xylostella (Lepidóptera: Plutellidae) utilizando Bacillus thuringiensis
Authors: Mena Guerrero Julieth , Hernández Fernández Javier
Published: November 2017

La Plutella xylostella (L.) es un insecto plaga que afecta principalmente los cultivos de brasicáceas o crucíferas como el repollo, coliflor, brócoli y rábano, entre otros. Las limitaciones del rendimiento y calidad de estos cultivos se deben principalmente al difícil manejo de esta plaga. En la actualidad, para controlar la P. xylostella se utilizan insecticidas de síntesis química, como piretroides, carbamatos u organofosforados, los cuales tienen acción inmediata pero causan efectos adversos en la salud y en el ambiente. Adicionalmente, la ausencia de enemigos naturales capaces de controlar a sus poblaciones, y su resistencia a numerosos insecticidas convencionales hacen que este insecto se establezca rápidamente en áreas productoras de brasicáceas. Se calcula que los costos mundiales asociados al control de la P. xylostella, sumados a las pérdidas en la producción agrícola, están entre cuatro y cinco billones de dólares anuales.Se han propuesto alternativas seguras, efectivas y de menor impacto ambiental, como el control biológico, que permite la producción sostenible de los cultivos de brasicáceas. La industria agrícola y forestal reconoce a la bacteria entomopatógena Bacillus thuringiensis (Bt) como una buena alternativa biológica a los insecticidas químicos, puesto que es inocua sobre el ambiente y su toxicidad es altamente selectiva, ligada a su estrecho rango de especificidad sobre diferentes insectos plaga de los órdenes Lepidóptera, Coleóptera y Díptera. En esta revisión se presentan las posibilidades actuales que se pueden emplear para el control de la P. xylostella utilizando modelos investigativos basados en ensayos biológicos con Bt. Dichas posibilidades buscan superar las desventajas existentes en relación con la plaga P. xylostella y los cultivos de brasicáceas, además de entender la fisiología de Bt bajo condiciones que permitan incrementar la eficacia en el control biológico.
Inventario de gases efecto invernadero en la Universidad de Bogotá Jorge Tadeo Lozano (Utadeo)
Authors: Manso Piñeros Daniela , Parrado Moreno Carmen Alicia , Aristizábal Andrés Julián
Published: November 2017

Las universidades, como instituciones de educación superior, deben asumir compromisos ambientales, y estos compromisos requieren políticas claras y acertadas, así como la adopción de estrategias que involucren la cuantificación de sus impactos. En este estudio se presenta el inventario de gases de efecto invernadero (GEI) en la Universidad de Bogotá Jorge Tadeo Lozano (Utadeo), sede Bogotá, correspondiente al año 2015. Mediante la identificación y clasificación de las principales actividades desarrolladas en la institución y la posterior colección de datos de entrada de materia y energía se cuantificaron las emisiones de GEI en CO2 equivalentes, acorde con la norma ISO 14064-1 (2006). En los límites organizacionales de la Utadeo se establecieron diez fuentes de emisión. En el alcance I se calcularon 138.163 t CO2e, atribuido a procesos de combustión de diésel y gas natural en el funcionamiento de plantas eléctricas, cafeterías y laboratorios; en el alcance II, 628.833 t CO2e, que corresponden a las emisiones indirectas por consumo de energía eléctrica en diversas actividades educativas y académicas. Además, en emisiones indirectas del alcance III se cuantificaron 921,368 t CO2e, asociadas a la infraestructura, transporte aéreo, consumo de papel, agua y generación de residuos. El inventario de GEI de la Universidad fue de 1688.36 t CO2e, y las emisiones comprendidas en el alcance III fueron las que hicieron mayor aporte.
The effectiveness of agrobusiness technical training and education model for the field agricultural extension officers
Authors: Sumarwono Kristiyo , Sukardi S. , Soenarto S.
Published: November 2017

The study was to: (1) find the most effective agrobusiness technical training and education model for the Field Agricultural Extension Officers to be implemented; and (2) to identify the knowledge level, the highest agrobusiness skills and the strongest self-confidence that might be achieved by the participants through the implemented training and education patterns. The study was conducted by means of experiment method with the regular pattern of training and education program as the control and the mentoring pattern of training and education program as the treatment. The three patterns of training and education programs served as the independent variables while the knowledge, the skills and the self-confidence served as the dependent variables. The study was conducted in three locations namely: the Institution of Agricultural Human Resources Development in the Province of Yogyakarta Special Region (Balai Pengembangan Sumber Daya Manusia Pertanian Daerah Istimewa Yogyakarta – BPSMP DIY); the Institution of Agricultural Human Resources Empowerment (Balai Pemberdayaan Sumber Daya Manusia Pertanian – BPSDMTAN Soropadan Temanggung Provinsi Jawa Tengah) in Soropadan, Temanggung, the Province of Central Java; and the Institution of Training and Education in Semarang, the Province of Central Java (Badan Pendidikan dan Pelatihan Semarang Provinsi Jawa Tengah). The study was conducted to all of the participants who attended the agrobusiness technical training and education program and, therefore, all of the participants became the subjects of the study. The study was conducted from October 2013 until March 2014. The results of the study showed that: (1) there had not been any significant difference on the knowledge and the skills of the participants who attended the regular pattern in training and education programs and those who attended the mentoring pattern in training and education programs; (2) the regular pattern in training and education programs and the mentoring pattern in training and education programs had significant difference on the field agricultural extension officers’ self-confidence (t count = - 2.28; p = 0.03) and (t count = - 2.41; p = 0.02); and (3) the mentoring pattern in training and education programs showed very significant difference on the agrobusiness skills (t count = - 4.94; p = 0.00). The mentoring pattern in training and education programs showed significant changes in improving the field agricultural extension officers’ skills and confidence for about 9.43% and 7.75% respectively in implementing the agrobusiness activities compared to the other patterns of training and education programs.
Effect of Presentation Skill on Machiavellianism among School Administrators
Authors: Josephine Emilda , S. Vijayalakshmi
Published: November 2017

India has become a favorite destination for Education globally. Schools face a lot of pressure in trying to be in par with the standards of these countries. This encumbrance falls on the shoulders of the School administrators. They have to correlate with the teaching faculty, non-teaching staff, parents and teachers in order to operate in the direction of the better functioning of the school.
Objectives of the study are: To find out the significant difference between men and women , school administrators in their presentation skill and machiavellianism. To find out the significant difference in school administrator in presentation skill and machiavellianism with respect to the type of school and also the correlation between skill and Machiavellianism. Hypotheses are formulated on the basis of framed objectives. Survey method was followed in this study to collect data with 42 school administrators. Result shows the significance difference between male and female, government, aided and private school administrators in their presentation skill and Machiavellianism.
IMPACT OF ACADEMIC STRESS ON STUDENTS OF CLASS +1
Authors: Gill Navdeep Kaur
Published: November 2017

Stress arises when the combination of internal and external pressures exceeds the individual’s resources to cope with their situation. For many young adults, college is the best time of life. These critical years can also be undermined by depression, anxiety and stress. Students are very likely to experience some or many stressors which may test their ability to cope: adapting to a new environment, balancing a heavy work load, making new friends, becoming more independent, and dealing with myriad of other issues. Looking from a closer perspective, the college students’ encounters a number of challenges in his day to day life, therefore the whole idea of an existing and vibrant college life is unveiled by these challenges which in turn contribute to stress and if not dealt with can only escalate and hamper their academic performance, emotional and social well-being. The purpose of the study is to find out the level of academic stress among students Of Class +1 having different streams. A sample of 200 students of class +1 studying in school of Ferozepur District of Punjab, India was drawn using random sampling technique. The main focus of this paper to examines the sources and effects of stress on students. The study reveals that the students of class +1 are having moderate level of academic stress and irrespective of sub samples of students are having moderate level of academic stress.
Language Attitudes of the Gaddang Speakers towards Gaddang, Ilocano, Tagalog and English
Authors: Asuncion Zayda S. , Rañosa-Madrunio, Ph.D. Marilu
Published: November 2017

Language attitudes have been the focus of interest in sociolinguistics for the past decades. In the Philippines, there is a dearth of literature on sociolinguistic studies that focus on indigenous languages and their speakers. To contribute to the literature, this study endeavoured to investigate the attitudes of Gaddang speakers in the northern part of the country towards Gaddang, their native language; Ilocano, the lingua franca of the province; Tagalog/Filipino, the national language; and English, one of the official languages. It also explored possible differences in the language attitudes of the Gaddangs in terms of geographical location, age, gender, socio-economic status, and educational attainment. Using survey questionnaire and semi-structured interview, the study involved 568 respondents. Results revealed that Gaddang speakers manifest positive attitudes towards Tagalog, Gaddang, Ilocano, and English respectively. The study also yielded significant differences in their attitudes with respect to geographical location, age, socio-economic status, and educational attainment except gender. The results have significant implications on the maintenance or gradual loss of their native language.
Conjugalidade e coparentalidade tardia
Authors: Quadros Fidelis Daiana , Falcke Denise , Pereira Mosmann Clarisse
Published: November 2017

Este estudo buscou compreender a transição da conjugalidade para a coparentalidade tardia em casais com dupla carreira. Teve âmbito exploratório, descritivo e qualitativo. Participaram cinco casais heterossexuais, ambos com profissionais, filho primogênito de até um ano de idade e com mais de 35 anos. Como critério de exclusão, não poderiam ter realizado tratamento de fertilização. Utilizou-se um questionário sociodemográfico e uma entrevista. Os resultados apontaram modificações nas relações conjugais e coparentais. O pai se mostrou presente durante a gestação e principalmente depois do nascimento do filho, dividindo as tarefas de cuidados e tarefas domésticas, refletindo altos níveis de acordo coparental e, boa qualidade conjugal. Os casais deste estudo ainda que com grande carga horária de trabalho se mostraram satisfeitos com seu emprego por terem flexibilidade, permitindo conciliar trabalho e parentalidade.
Jubilación, trastornos psicofisiológicos y bienestar psicológico en una muestra de adultos mayores argentinos
Authors: Hermida Paula Daniela , Tartaglini María Florencia , Feldberg Carolina , Stefani Dorina
Published: November 2017

El objetivo de este estudio fue describir la relación entre trastornos psicofisiológicos y bienestar psicológico en la jubilación, en un grupo de adultos mayores argentinos. Se utilizó un diseño de estudio “ex post facto”, de carácter retrospectivo, simple. 150 adultos mayores (autoválidos, de nivel socioeconómico medio y diferente género, residentes en Buenos Aires y zonas de influencia –Argentina-, y que poseían un vínculo laboral estable y formal antes de jubilarse) respondieron un Cuestionario de datos sociodemográficos y de perfil jubilatorio, un Cuestionario de estado de salud y el Índice de Bienestar Psicológico. Los resultados mostraron un mayor bienestar psicológico entre quienes informaron una menor presencia de trastornos psicofisiológicos asociados a la jubilación. Dichos hallazgos coincidieron con los de investigaciones previas destacando la importancia del estudio del bienestar psicológico como un aspecto central en la calidad de vida de los adultos mayores.
Actitudes de los docentes acerca de la educación inclusiva
Authors: Angenscheidt Bidegain Leticia , Navarrete Antola Ignacio
Published: November 2017

Este estudio tiene como primer objetivo describir las actitudes de los docentes de enseñanza inicial y primaria en un colegio privado de Montevideo sobre la educación inclusiva. Entendiendo como actitud, un conjunto de percepciones, creencias, sentimientos a favor o en contra y formas de actuar ante el hecho educativo que centra su esfuerzo en el logro de los aprendizajes. Un segundo objetivo es analizar si dichas actitudes dependen del cargo como docente, la formación académica, el contacto con personas con discapacidad, la etapa educativa y los años de experiencia profesional. El diseño fue de tipo transversal y descriptivo y el instrumento utilizado, la Escala de Opinión acerca de la Educación Inclusiva. Las actitudes se valoraron a través de un instrumento de 23 ítems, con cinco alternativas de respuesta en la Escala de Actitudes tipo Likert. Se trabajó con una muestra no probabilística de 44 docentes de inglés y español. Los resultados mostraron una actitud favorable hacia los fundamentos de la educación inclusiva y hacia las prácticas inclusivas. Asimismo, reflejan que los docentes de español tienen una actitud más favorable que sus pares de inglés con respecto a los fundamentos de la educación inclusiva. Además, se encontró que los docentes con más experiencia tienen una actitud más favorable en relación con las medidas y prácticas inclusivas. No se hallaron diferencias estadísticamente significativas entre las actitudes de los docentes y la etapa educativa.
La vulnerabilidad de los integrantes del núcleo familiar en los casos de violencia doméstica
Authors: Briz María José , Varela María Elena
Published: November 2017

Se analizan las sentencias interlocutorias producidas en un caso de Derecho de Familia, llevado por el Consultorio Jurídico de la Facutad de Derecho, de la Universidad Católica del Uruguay. Se encuadra dentro de un caso de violencia doméstica en el cual se involucra a otros integrantes del núcleo familiar, quienes ven vulnerados sus derechos mediante las sentencias dictadas, que son el  objeto de análisis.
Jurisprudencia sobre responsabilidad del Estado
Authors: Risso Ferrand Martín , Garat María Paula , Rainaldi Stephania , Rodíguez Galusso Alicia , Techera Lucía
Published: November 2017

Este trabajo es el resultado de la primera etapa (de tres), de una investigación sobre jurisprudencia en materia de responsabilidad del Estado y amparos no médicos contra el Estado, llevada a cabo por el Departamento de Derecho Constitucional. Las labores han sido dirigidas por el Dr. Martín Risso F., director del Departamento, y las profesoras Alicia Rodríguez Galusso, Paula Garat, Stefanía Rainaldi; han participado 15 estudiantes y la Dra. Lucía Techera, egresada UCU, quienes tuvieron a su cargo el examen de más de 1.600 sentencias (trienio julio 2014 a julio 2017)