bluuebunny/crossref_metadata_2025 huggingface dataset:
Growing Degree‐Day Models Predict the Performance of Paclobutrazol on Bentgrass Golf Putting Greens
Authors: Kreuser William C. , Obear Glen R. , Michael Darrell J. , Soldat Douglas J.
Published: March 2018

The performance of plant growth regulators (PGRs) in turfgrass is closely related to air temperature. Growing degree‐days (GDD) have been used to predict the performance of a foliar‐absorbed PGR, trinexapac‐ethyl (TE), on creeping bentgrass (Agrostis stolonifera L.). Similar models have not been attempted for paclobutrazol, a root‐absorbed PGR. This research aimed to develop GDD models (base temperature = 0°C) for paclobutrazol applied alone or in combination with TE. Models were developed on creeping bentgrass putting greens in Madison, WI (2009) and near Mead, NE, (2014 and 2015). Paclobutrazol was applied alone or with TE at various rates each year. Clippings were collected several times each week and treatments were reapplied when the PGR's effects expired. Sinewave regression models fitted relative clipping yield to GDD accumulation following the most recent PGR application. Relative clipping yield from all treatments was described by symmetric sinewave regression (adjusted R2: 0.409–0.862). The intensity of clipping yield suppression, expressed by the model amplitude, ranged from 0.293 to 0.621 g g−1, depending on the application rate or the addition of TE. The application rate had less effect on the duration of the growth response, represented by the model period. The estimated reapplication intervals ranged from 269 to 302 GDD. Tripling the application rate lengthened the estimated reapplication interval by <2 d. The addition of TE did not accelerate peak suppression and had a small, inconsistent impact on the model period. Golf course superintendents should use GDD models to schedule reapplications to sustain season‐long yield suppression.
Phosphorus Mobility and Behavior in Soils Treated with Calcium, Ammonium, and Magnesium Phosphates
Authors: do Nascimento Carlos A. C. , Pagliari Paulo H. , Faria Letícia de A. , Vitti Godofredo C.
Published: March 2018

Core Ideas

Humic acid coatings on monoammonium phosphate had no effect on P lability or mobility.

Struvite provided the lesser P mobility among the fertilizers tested.

There was greater P mobility in soils with high sand content and low initial pH.

The fertilizer industry has attempted to increase P mobility and lability after fertilizer application by using nonconventional phosphates or by including additives in the fertilizer formulation. We incubated granular monoammonium phosphate (MAP), sulfur‐coated MAP, humic acid‐coated MAP, triple superphosphate (TSP), ammonium potassium polyphosphate (AKPP), and ammonium magnesium phosphate (struvite) with soils from the United States and Brazil in Petri dishes for 56 d. We estimated P mobility by measuring P movement away from fertilizer granules and assessed P lability through sequential chemical fractionation of soil collected from the dishes. In addition, we monitored the change in soil pH with distance from fertilizer placed in the Petri dish. Soil pH changed in response to fertilizer additions as a function of initial soil pH. In fertilized soils, the soil pH response followed a quadratic function as the distance from the fertilizer placement site increased. Soil characteristics influenced P mobility, with mobility decreasing from the Hubbard (12% clay; pH 5.3), to Brazil (20% clay; pH 6.5), to Normania (22% clay; pH 5.5), and then Barnes (31% clay; pH 8.0) soil. The use of MAP‐based fertilizers resulted in the greatest mobility, while struvite provided the lowest mobility. In contrast, struvite granules dissolved the least resulting in the highest labile P concentrations, due to direct extraction of fertilizer P from undissolved granules (average of 73% of applied P). Comparatively, TSP provided the lowest amount of labile P (average of 52% applied P). Sulfur and humic acid‐coated MAP had no effect on P lability or mobility.
Magnetic Resonance Monitoring and Numerical Modeling of Soil Moisture during Evaporation
Authors: Merz Steffen , Balcom Bruce J. , Enjilela Razieh , Vanderborght Jan , Rothfuss Youri , Vereecken Harry , Pohlmeier Andreas
Published: March 2018

Core Ideas

Evaporative drying of soil columns was monitored in high resolution using NMR.

Soil moisture data were used for validating a water, vapor, and heat flow model.

The Richards approach was insufficient under Stage II conditions.

NMR is a feasible technique for soil moisture measurements under Stage II conditions.

Evaporation from bare soil surfaces can be restrained to a great extent with the development of a dry layer at the soil surface where capillary hydraulic conductance ceases and water flow proceeds only by gas phase transport. Model calculations and preliminary experiments with model porous media have shown that this surface layer can be very thin. An accurate characterization of these processes is required, which is provided by noninvasive magnetic resonance (MR) methods. The evaporative drying of a silt loam and a sandy loam was monitored at high spatial resolution in laboratory experiments. The MR data were used to assess the performance of two numerical models: (i) the Richards equation, which considers isothermal liquid water flow, and (ii) a coupled soil water, heat, and vapor flow numerical model. The experimental results reveal two distinct drying regimes for both soil types where, at the onset of the second evaporation stage, a dry surface zone developed with increasing thickness over time. This layer revealed that water loss inside the soil coincided with a relatively low evaporation rate as the liquid continuity to the soil surface vanished. The modeling results clearly demonstrated the need to consider heat and vapor flow. It was shown, as a proof of principle, that MR relaxation time spectra may serve as a proxy to follow desaturation processes where spatially resolved transverse relaxation can reveal a secondary evaporation front.
Soil Hydraulic Modeling Outcomes with Four Parameterization Methods: Comparing Soil Description and Inverse Estimation Approaches
Authors: Graham Scott L. , Srinivasan M.S. , Faulkner Nathalie , Carrick Sam
Published: March 2018

Core Ideas

Soil hydraulic model outcomes are sensitive to the data source used for parameterization.

Inverse parameter estimation from field data improved drainage estimates.

All parameterization methods lead to underestimation of field‐measured evaporation.

Different methods for parameterizing soil hydraulic models can lead to substantially varied predictions of soil–plant–atmosphere water fluxes. This study investigated, for a heterogeneous stony soil, four methods of soil hydraulic parameterization: (i) use of a pedotransfer function with a four‐layer soil profile based on detailed soil physical and textural description; (ii) use of a pedotransfer function with a single‐layer soil description; (iii) inverse estimation from soil moisture data; and (iv) inverse estimation from lysimeter drainage. Soil drainage, volumetric water content, and evapotranspiration were each modeled using HYDRUS‐1D for an irrigated pasture in New Zealand during the time period 1 July 2011 to 15 Mar. 2014. The first 15 mo were used for model spin‐up and inverse parameter estimation, while the remainder of the study period was used as a validation period, during which model results were compared against field data. Predictions from each model parameterization were compared with field‐measured fluxes from lysimeter, soil moisture sensors, and eddy covariance to determine the approach most appropriate for our site and application. The parameters estimated inversely from field data improved the modeling of soil drainage, leading to total drainage within 5 to 7% of the measured volume and prediction of 35 to 80% more drainage peaks than parameterizations based on detailed soil physical description. While all methods underpredicted evapotranspiration by 18 to 30% compared with eddy covariance, improvement in drainage estimates with inverse estimation from field data led to decreased capability for modeling evapotranspiration. We suggest this approach for application in other settings to select the most appropriate parameterization approach for a given soil hydraulic model application.
Actual Evapotranspiration of Unirrigated Grass in a Smart Field Lysimeter
Authors: Doležal František , Hernandez-Gomis Rebeca , Matula Svatopluk , Gulamov Mukhitdin , Miháliková Markéta , Khodjaev Sanjar
Published: March 2018

Core Ideas

Small smart lysimeters make high‐quality research of low and dense crops easy.

FAO 56 can estimate well the reference crop ET on non‐ or mildly stressed sites.

Weather station grass (not water stressed) has lower ET than the reference crop.

Lysimeters are basic instruments for evapotranspiration measurement. This study characterized the actual evapotranspiration of unirrigated and unfertilized grass in a warm region of the Czech Republic on a Chernozem loamy soil. An SFL‐300 weighing lysimeter (diameter 0.3 m, depth 0.3 m) was used for this purpose. The suction at its bottom was maintained at the same level as in the native soil nearby. We selected 585 rainless days with regular records for the analysis of daily differences. On most days, the lysimeter‐measured actual evapotranspiration, ETa, was smaller than the Penman–Monteith FAO 56 reference crop evapotranspiration, ET0. The FAO 56 procedure was found to be a reasonable estimator of the unstressed evapotranspiration in a moderately stressed environment. The ETa/ET0 ratio and the canopy surface resistance, rs, depend on the soil water content and suction measured at 5 cm. These graphs break down into horizontal unstressed parts and declining (for ETa/ET0) or inclining (for rs) water‐stressed parts. The ratio ETa/ET0 is about 85% and rs is about 250 s m−1 when the grass is not under water stress. The annual curve of the unstressed crop coefficient has a sine shape. An energy balance criterion suggests that advection of heat is important in winter but not so much in summer. The study provides parameters of evapotranspiration for a canopy that can be found on many standard weather stations and demonstrates that high‐quality research into evapotranspiration of low, dense, and shallow‐rooting crops is possible with small lysimeters of this type.
Determinants of non-revenue water for a water utility in California
Authors: Güngör-Demirci Gamze , Lee Juneseok , Keck Jonathan , Guzzetta Robert , Yang Paul
Published: March 2018

Physical, technical, managerial, and environmental factors are all known to influence non-revenue water (NRW) volume, so a better understanding of these factors is important if we are to intervene in water loss problems more effectively. This study therefore identified determinants of NRW for a water utility in California by applying fixed effects panel regression analysis incorporating uncertainty. Network length, connection density, and net operating revenue per cubic meter of water sold were found to be negatively correlated with NRW while a positive relationship between number of leaks and NRW was identified. These findings will inform the water utility's management team/decision-makers regarding the specific impacts of NRW's critical factors and guide them to focus on these factors to further reduce NRW as well as set long-term benchmarks.
Analysis of the impact of Shifosi Reservoir water level on underground water
Authors: Yan B. , Xie Y. , Guo C. J. , Zhao C. S.
Published: March 2018

Shifosi Reservoir is a plain reservoir. High groundwater level in the nearby area caused by impoundment of the reservoir has not only submerged the nearby farmland and village, but also reduced production and affected farmers' living. To analyze the influence of reservoir impoundment on surrounding groundwater level, Visual MODFLOW software was used to simulate the groundwater in Zhujiapu and Chenpingpu areas on the right auxiliary dam of Shifosi Reservoir. Results show that with the rise of the reservoir water level from 45.5 m to 46.2 m and 46.5 m, the area under the critical groundwater table (45 m) in the study area decreased in turn. In 2008, when the reservoir water level was 46.2 m and 46.5 m, the area under the critical groundwater level was reduced by 0.64 km2 and 0.84 km2, respectively, compared with the case of reservoir water level of 45.5 m, and would decrease by 0.38 km2 and 0.45 km2, respectively, by 2022. This indicates that the impact of reservoir impoundment on groundwater level is great. Therefore, relief wells or drainage ditches should be arranged along the auxiliary dam axis to effectively lower the groundwater level, and improve the surrounding ecological environment of the reservoir.
Farmers' willingness to adapt to climate change for sustainable water resources management: a case study of Tunisia
Authors: Lasram Asma , Dellagi Hatem , Dessalegn Bezaiet , Dhehibi Boubaker , Ben Mechlia Netij
Published: March 2018

Shrinking water resources as a potential result of climate change (CC) creates a challenging tradeoff situation in the north of Tunisia. This study provides valuable insights into the conditions that can promote farmers' acceptance of regulated deficit irrigation and a new water pricing policy to address CC impacts on the semi-arid irrigated region which will allow for a sustainable irrigation regime and the conservation of water resources at regional scale. Binary logistic regression was used to analyze data collected from 100 farmers in the citrus regions of Beni Khalled and Menzel Bouzelfa, to identify determining factors for farmers' willingness to accept the proposed water management strategies. Empirical findings reveal that the significant explanatory variables are essentially linked to farmer satisfaction about the current irrigation management in relation to water supply reliability, rather than the social criteria and farmers' awareness of water scarcity. More efforts are needed to improve the transparency of water allocation systems to motivate the willingness of water users to adopt new technologies or policies. The different stakeholders should agree to take action now about strategic extension and communication plans to enhance awareness on ensuing environmental problems, to take advantage of long-term profitability of the water restriction.
Looking for New Inhibitors for the Epidermal Growth Factor Receptor
Authors: Concu Riccardo , Cordeiro M. Natalia D.S.
Published: March 2018

Epidermal Growth Factor Receptor (EGFR) is still the main target of the Head and Neck
Squamous Cell Cancer (HNSCC) because its overexpression has been detected in more than 90% of this
type of cancer. This overexpression is usually linked with more aggressive disease, increased resistance
to chemotherapy and radiotherapy, increased metastasis, inhibition of apoptosis, promotion of neoplastic
angiogenesis, and, finally, poor prognosis and decreased survival. Due to this reason, the main target in
the search of new drugs and inhibitors candidates is to downturn this overexpression. Quantitative
Structure-Activity Relationship (QSAR) is one of the most widely used approaches while looking for
new and more active inhibitors drugs. In this contest, a lot of authors used this technique, combined with
others, to find new drugs or enhance the activity of well-known inhibitors. In this paper, on one hand,
we will review the most important QSAR approaches developed in the last fifteen years, spacing from
classical 1D approaches until more sophisticated 3D; the first paper is dated 2003 while the last one is
from 2017. On the other hand, we will present a completely new QSAR approach aimed at the
prediction of new EGFR inhibitors drugs. The model presented here has been developed over a dataset
consisting of more than 1000 compounds using various molecular descriptors calculated with the
DRAGON 7.0© software.
A Review on Post Pregnancy Healer Herbs
Authors: Pal Rashmi Saxena , Pal Yogendra , Wal Pranay
Published: March 2018

Background:

Postpartum is an important phase of life after childbirth. It needs to be
highly important as in terms of health in future life. This time brings lots of complications with it.
Lots of aspects need to be looked after as the care of the new mom is essential to bring back her
stamina and strength.

Objective:

The objective of this review article is to explore the heeding power hidden in nature
for returning back to the mothers to the pre-pregnancy state. There are various areas of concern
after postpartum to heal up the body overall, such as to heal up the uterus, providing galactagogues,
nutritives, maintenance of hormones and restoring back the strength and tone of the abdomen.

Materials and Methods:

A literature search has been done on the various herbs, which fulfill the
various desired aspects to be looked after post pregnancy.

Results:

There are various herbs present in nature, regarding their hidden potential still the awareness
is not up to the mark. This review highlights the various plants which have been proven to be
useful in dealing the post-pregnancy issues. They deal with all the aspects of complications and
issues occurring post pregnancy. They heal the uterus which has undergone so many types of
changes, maintains the balance of hormones back, besides providing nutrition and increasing the
production of milk, they also restore back the tone and strength of the walls of the abdomen.

Conclusion:

These herbs are full-fledged with the phytoconstituents that heal the whole system
after delivery. The need of present time is to take patiently these as the source of medicines regularly
under medical supervision to overcome the various concerned problems of post pregnancy.
Some Thiazole Derivatives Combined with Different Heterocycles: Cytotoxicity Evaluation and Apoptosis Inducing Studies
Authors: Yurttaş Leyla , Demir Bahar , Çiftçi Gülşen A.
Published: March 2018

Background:

Thiazole ring is an outstanding structure found in many biologically active compounds
and clinically available drugs. Because of synthesis simplicity of its derivatives and having a wide range of
biological aspects along with high effectiveness, new thiazole derivatives have been studied by medicinal chemists
since many years.

Objective:

Some thiazole compounds combined with different heterocyclic rings were acquired in this study.
Novel 5-(4-substituted benzylidene)-2-[(4,5-dimethylthiazol-2-yl)amino]thiazol-4(5H)-one derivatives (4a-g)
and 2-(heteroaryl-2/3/5-yl)thio-N-(4,5-dimethylthiazol-2-yl)acetamide (4h-p) derivatives were synthesized starting
from 2-amino-4,5-dimethylthiazole. The obtained compounds were evaluated to determine their antiproliferative
activity.

Method:

Final compounds (4a-g) were obtained with a ring closure reaction; other final compounds (4h-p) were
acquired via the reaction of mercapto heterocycles with Hantzsch thiazole synthesis intermediate. To evaluate
antiproliferative activity of them, the compounds were tested on A549 adenocarcinomic human alveolar basal
epithelial cells line, C6 rat glioma cell line and NIH/3T3 mouse embryo fibroblast cell line according to the
conventional MTT method. Besides, the selected compounds were studied to find out which pathway cell deaths
caused via Annexin V/PI staining.

Results:

Compounds 4f, 4j and 4p exhibited the highest cytotoxicity on A549 with a non-toxic profile. Also, 4f,
4h, 4j and 4p were determined as the most antiproliferative compounds on C6 cell line. Furthermore, compound
4p induced apoptosis of A549 cell with a level of 23.5% and compound 4h induced C6 cell with a level of
37.5%.

Conclusion:

Considering the structure of the compounds, although thiazolidine containing compounds 4a-g
exhibited higher activity in general, compounds 4p containing 5-chlorobenzothiazole moiety showed the highest
cytotoxicity. It could be expressed with the conspicuous antitumor efficiency of benzothiazole ring.
Ductile Compressive Failure of Concrete Reinforced with High Strength Carbon Hybrid Composite
Authors: Wu Hwai-Chung , Diallo Boubacar
Published: March 2018

Background:

For centuries, steel rebar has been the primary reinforcement in concrete despite its major drawbacks, such as its heavy weight, high electrical conductivity, and corrosiveness. Thus, in response to the need for better alternatives, innovative Hybrid Composite (HC) reinforcements have been developed.

Objective:

The focus of this paper is to investigate the performance of tubular HC reinforcements in concrete columns under axial compressive loading.

Method:

Concrete columns of different sizes were tested.

Results and Conclusion:

For the small columns, HC reinforced columns showed very high load capacity, which was more than 3 times the capacity of plain concrete. Moreover, significant ductility was achieved with an ultimate strain of up to 59%. For the large columns, HC reinforced columns showed similar load capacities, but much larger ultimate strains in comparison to the corresponding steel reinforced concrete columns.
Prominent Visible Light Photocatalytic and Water Purification Activity of PbS/CdS/CdO Nanocomposite Synthesized via Simple Co-Precipitation Method
Authors: Sabet Mohammad , Mohammadi Marziyeh , Googhari Fatemeh
Published: March 2018

Background:

Due to unique chemical and physical properties and potential application in
many fields, nanostructured materials have attracted many attentions. Cadmium sulfide (CdS) is a semiconductor
that has a wide band gap of 2.42 eV at room temperature and can be served in solar cells
and photoluminescence devices. Cadmium sulfide (CdS) is a kind of attractive semiconductor material,
and it is now widely used for optoelectronic applications. CdS nano and microstructures can be synthesized
via different chemical methods such as microwave-solvothermal synthesis, surfactant-ligand coassisting
solvothermal method and hydrothermal route. Also different morphologies of this semiconductor
such as dendrites, nanorods, sphere-like, flakes, nanowires, flower-like shape triangular and
hexagonal plates, were synthesized.

Methods:

To synthesis of the nanocomposite, a simple co-precipitation method was served. In briefly,
0.1 g of Pb(NO3)2 was dissolved in the distilled water (Solution 1). Also different aqueous solutions
were made from dissolving different mole ratio of Cd(NO3)2.6H2O respect to the lead source in the
water (Solution 2). Two solutions were mixed together under vigorous stirring and then S2- solution
(0.02 g thiourea in the water) was added to the Pb2+/Cd2+ solution. After that 0.1 g of CTAB as
surfactant was added to the final solution. Finally to the synthesis of both sulfide and oxide
nanostructures, NaOH solution was added to the prepared solution to obtain pH= 10. Distilled water
and absolute ethanol were used to wash the obtained precipitate and then it dried at 80 °C for 8 h.

Results:

From the XRD pattern it was found that the peaks placed at 24.9°, 27°, 44.1°, 48°, 52°, 54°,
57.8°, 66.8°, 71.2° are associated to CdS compound with hexagonal phase (JCPDS=00-001-0780) that
belong to (100), (002), (110), (103), (112), (201), (202), (203), (211) Miller indices respectively. The
Other peaks belong to PbS with hexagonal phase (JCPDS=01-078-1897), and CdO with cubic phase
(JCPDS=00-001-1049). From SEM images, it was found by choosing the mole ratio to 1:1, very small
and uniform particles were achieved. By increasing Pb2+/Cd2+ mole ratio to 1:2, very tiny particles aggregated
together were achieved.

Conclusion:

The results showed that the product can adsorb extra 80% of heavy metal ions from the
water. So it can be said that the nanocomposite can be used in the water treatment due to its high photocatalytic
and surface adsorption activities. In other words, it can remove heavy metals from the water
and also decompose organic pollutions.
Improving science learning achievement and creativity through surrounding natural environment approach
Authors: Pribadi Ahmadi
Published: March 2018

The research aimed to improve the learning process on science competence, improve the students’ creativity, and improve the students’ science learning achievement of grade V SD Negeri Karangreja 01, Cipari district, Cilacap regency through surrounding natural environment approach. The research was Classroom Action Research. The study was conducted in two cycles. This research was conducted in SDN Karangreja 01 Cipari, Cilacap from November to December 2014. The objects were all students of grade V consisting of 17 students. The data were collected using observation, paper and pencil tests, interviews, and documentation. The results showed the implementation of surrounding natural environment approach in science instruction could improve the students’ creativity and science learning achievement of grade V. The improvement of learning process indicated through the mean score at cycle I and II which are 13 and 14 respectively. The improvement of students’ creativity and learning achievement was indicated through the mean score of creativity test, the mean score of learning achievement on the aspects of affective, psychomotor, and cognitive at cycle I and cycle II. The improvement of creativity test score at cycle I and II were 11.56 and 13.31 respectively. The improvement of affective score at cycle I and II were 2.99 and 3.58 respectively. The improvement of psychomotor score at cycle I and II were 2.50 and 3.42 respectively. The improvement of cognitive score at cycle I and II were 75.36 and 86 respectively.
Developing science monopoly on the force learning material for elementary school students
Authors: Maryani Ika , Sumiar Zia
Published: March 2018

Natural science learning in elementary schools is considered difficult by students due to its complexity. Teachers have not been fully able to present the natural science lesson in accordance to the characteristics of elementary school students who are still love to play. Those making the learning process and outcomes have not been maximized and require learning media to overcome the problem. This study aimed to: (1) understanding the way to develop science monopoly in Force learning material; and (2) understanding the quality and feasibility of science monopoly. This study was research and development by ADDIE model in five stages, which are; analysis, design, development, implementation, and evaluation. The test of the product was conducted to the 4thgrade students of Muhammadiyah Bausasran 1 Elementary School, Yogyakarta. Instruments have been stated as valid by the expert judgement. The instruments were questionnaire of the feasibility of material, media, and learning expert; questionnaire of students response; and teacher response. Data analysis techniques were qualitative and quantitative data analysis. The assessment score of the media expert validation was 86.5 (very good), subject material expert was 87.5 (very good), learning expert was 85 (very good), teacher response was 100 (very good), and students response was 92.5 (very good).Thus, the learning media of science monopoly on force learning materials for elementary students was already feasible to use as a media of natural science learning.
Improving the experiment report writing skills of fifth graders through the discovery learning method
Authors: Indriyanti Rita , Prasetyo Zuhdan Kun
Published: March 2018

This study aimed to improve the experimental report writing skills through the discovery learning method of the fifth graders of  Muhammadiyah Sapen Elementary School Yogyakarta. This study was classroom action research. The subjects were 26 students of the fifth grade. The techniques for collecting data were observation, task, and documentation. The instruments of the data collection were observation sheets and writing performance. The result of this study showed that the process approach with the discovery learning method could improve the experimental report writing skills of the fifth-grade students of Muhammadiyah Sapen Elementary School Yogyakarta. It could be seen from the result of students’ observation sheet and writing performance. The observation result indicated the increase of the process and result of experimental report writing skills with the average score of 74.88 in Cycle I to 89.38 in Cycle II. The percentage of the Minimum Criteria for Mastery Learning in Cycle I was 60% and increased to 96% in Cycle II, with 24 the students achieved the mastery level and one failed. This showed that the students’ classical mastery was achieved.
Developing inquiry-based lectora multimedia in order to increase the logical ability and the creative thinking
Authors: Noviani Sumandita , Wangid Muhammad Nur
Published: March 2018

The study aimed at: (1) developing inquiry-based lectora multimedia which is eligible to increase the logical ability and the creative thinking of the fifth-grade students; and (2) measuring the effectiveness of the inquiry-based lectora multimedia development in increasing the logical ability and the creative thinking of the fifth-grade students. The study was a research and development (R & D) effort. The developmental design of the study was adopted from the procedures proposed by Borg & Gall. In the preliminary field testing, the researcher involved three fifth-grade students from SD Jetis, Bantul. Then, in the main field testing the researcher involved eight fifth-grade students who were not involved in the preliminary field testing. Finally, in the operational field testing the researcher involved 33 students from Grade VA. The product of this study will be an inquiry-based lectora multimedia. Based on the research and development that had been conducted, 117 material experts and 87 learning experts declared that the inquiry-based lectora multimedia development is feasible with “Highly Valid” assessment category. The inquiry-based lectora multimedia development is effective to increase the logical ability and the creative thinking of the fifth-grade students. From the operational field testing, the researcher found that p = 0.003 < 0.050 and this finding implies that there is an increase in the logical ability and the creative thinking of the fifth-grade students who had been taught using the inquiry-based lectora multimedia in comparison to the students who were not taught using the inquiry-based lectora multimedia.
EVALUATION OF ZEOLITE AND PUMICE WASTE AS MINERAL AGGREGATE AND FILLER FOR PRODUCING LIGHTWEIGHT ASPHALT CONCRETE MIXTURES
Authors: TERZİ Serdal , BÜYÜKDOĞAÇ Esra Mine
Published: March 2018

This paper focused on the use of pumice and zeolite waste as aggregate
materials for producing lightweight asphalt concrete (AC) mixtures. The samples
having pumice,
zeolite and limestone aggregate
materials were prepared for an optimum bitumen content, optimum
Liquid Anti-strip (LAS)
additive ratio (0.4, 0.5,
0.6, 0.8, 0.9, 1.0, and 1.1 %),
and bitumen type (50/70 and 160/220) determined following
the Marshall Mixture design procedure. Then, AC mixes were prepared with
limestone used as the coarse aggregate and pumice and zeolite used as fine aggregate,
and with limestone used as the fine aggregate and pumice and zeolite used as
coarse aggregate. The stability of the mixtures was determined from the
Marshall Stability tests. Zeolite and pumice were also used as mineral filler
in AC mixtures. Optimum mineral filler ratio and physical properties were
determined. In general, pumice and zeolite aggregate mixtures gave lower stability
in comparison to limestone aggregate mixtures. These wastes can be applied as very thin wearing layer
for increasing friction, to prevent pavement layers from water infiltration,
and as overlay with 25-300 mm above old pavement. Because these
waste materials have very low weights, they can be used as wearing layer in
paving parking areas and non-heavy weight vehicle traffic in roads. The
importance of using waste materials and lightweight aggregates is to reduce the
environmental impact.
Sistem Kendali Lampu Cerdas Pada Smarthome Berbasis Android mengunakan Metode Fuzzy Logic Control
Authors: Putra Leo Ade , Hakim Arif Rahman
Published: March 2018

Perkembangan teknologi saat ini mendorong manusia untuk terus berpikir kreatif, tidak hanya menggali penemuan-penemuan baru, tapi juga memaksimalkan kinerja sistem dan teknologi yang ada. Kombinasi teknologi perangkat keras dan perangkat lunakdapat menciptakan inovasi baru dalam membantu keseharianmanusia. Sebagai contoh, perangkat elektronik pada rumah tangga yaitu lampu pada umumnya dikendalikan secara manual. Umumnya untuk pengaturan penerangan ruangan digunakan prinsip on-off yaitu menggunakan saklar lampu yang biasanya terdapat di dinding. Jika bangunan rumah cukup luas atau lantai bertingkat penghuni akan mengalami kesulitan dan menghabiskan banyak waktu atau tenaga saat hendak menyalakan atau mematikan lampu, karena saklarnya memiliki jarak yang cukup jauh dan terpisah-pisah. Pengaturan penerangan dengan prinsip on-off hanya berdasarkan pada kondisi gelap terang ruangan, tanpa menghiraukan kontribusi dari luar seperti cahaya matahari. Hal ini sering mengakibatkan ketidaknyamanan dan ketidakefisienan penggunaan energi listrik. Oleh karena itu muncullah ide untuk menciptakan alat kendali lampu cerdas yang bisa di akses melalui smartphone dan menggunakan metode fuzzy logic control. Dengan menggunakan mikrokontroler Arduino dan fuzzy logic control dapat mengatasi masalah dalam menyalakan, mematikan, menerangkan dan meredupkan lampu rumah.
The impact of risk factors on the financial performance of the commercial banking sector in Barbados
Authors: Wood Anthony , McConney Shanise
Published: March 2018

The objective of this paper is to determine the impact of risk factors on the financial performance of the commercial banking sector in Barbados using quarterly data for the period 2000 to 2015. The empirical results indicate that Capital Risk, Credit Risk, Liquidity Risk, Interest Rate Risk and Operational Risk have statistically significant impacts on financial performance. The only risk variable which does not derive this result is Country Risk. In addition, of those variables which proxy external factors, only GDP Growth has a statistically insignificant influence on financial performance. Credit risk exerted a negative impact on the banks’ financial performance, thus the banks must ensure they adopt appropriate measures to minimise the impact of this risk. Higher levels of capital impacted positively on the banking sector’s profitability. This paper is the first effort employing such an extensive dataset based on Barbados’ commercial banking sector and shows the main factors that influence commercial banks’ financial performance in this developing economy.
“Care for the recognized knowledge”. The ontic omission of existence as possibility of explicating its positive determinations
Authors: Radinkovic Zeljko
Published: March 2018

The article deals with Heidegger?s early conceptions of existential concern,
in which he gradually arrives at the conception of concern as the
factuality of the realization of one?s own existence or one?s own
possibilities of being. In the process, it becomes apparent to what extent
Heidegger at this point of the abstract postulates of concern as the
?concern for certainty? (Descartes), the ?concern for the recognized
knowledge?, but also of the abstractness of phenomenological approaches such
as himself used formal display delimits. Of central importance is the
emphasis on his insight into the fact that such views of concern,
interspersed in particular with the mathematical understanding of
certainty, obscure the original approach to the question of being. Heidegger
describes the supremacy of the theoretical and the idea of absolute validity
and evidence as the ?omission? to pose the question of being.
Integer powers of certain complex tridiagonal matrices and some complex factorizations
Authors: Bozkurt Durmuş , Bozkurt-Altındağ Burcu
Published: March 2018

In this paper, we obtain a general expression for the entries of the rth
power of a certain n x n complex tridiagonal matrix where if n is even, r ?
Z or if n is odd, r ? N. In addition, we get the complex factorizations of
Fibonacci polynomials, Fibonacci and Pell numbers.
Fuzzy uniform structures
Authors: Rodríguez-López Jesús
Published: March 2018

The concept of fuzzy uniform structure was introduced in [7] as a fuzzy
counterpart of the concept of gauge associated with a uniformity. In fact,
the category of fuzzy uniform structures is isomorphic to that of uniform
spaces. Here, we introduce two other concepts of fuzzy uniform structures
which allow to establish two categories isomorphic to the categories of
probabilistic uniform spaces and Lowen uniform spaces, respectively. This
sheds light on the relationship between these fuzzy uniformities and
classical uniformities. Furthermore, we obtain a factorization of Lowen?s
adjoint functors ?* and ? which establish a relationship between the
categories of uniform spaces and Lowen uniform spaces.
Inequalities for H-invex functions with applications for uniformly convex and superquadratic functions
Authors: Niezgoda Marek
Published: March 2018

In this paper, we introduce and study H-invex functions including the classes
of convex, ?-invex, (F,G)-invex, c-strongly convex, ?-uniformly convex and
superquadratic functions, respectively. Each Hinvex function attains its
global minimum at an H-stationary point. For H-invex functions we prove
Jensen, Sherman and Hardy-Littlewood-P?lya-Karamata type inequalities,
respectively. We also analyze such inequalities when the control function H
is convex. As applications, we give interpretations of the obtained results
for uniformly convex and superquadratic functions, respectively.
Weighted βγ-summability of fuzzy functions of order θ
Authors: Ojha Sarita , Srivastava P.D.
Published: March 2018

In this paper, the concept of weighted ??- summability of fuzzy functions of
order ? is introduced and classified into ordinary and absolute sense.
Further, a relationship between the weighted ??-summability and the
corresponding statistical convergence is established. Also, in case of
ordinary weighted ??-summability, a result analogous to Tauberian theorem
for fuzzy functions is obtained.
On the g-hypergroupoids associated with g-hypergraphs
Authors: Farshi Mehdi , Davvaz Bijan , Mirvakili Saeed
Published: March 2018

In this paper, we associate a partial g-hypergroupoid with a given
g-hypergraph and analyze the properties of this hyperstructure. We prove
that a g-hypergroupoid may be a commutative hypergroup without being a join
space. Next, we define diagonal direct product of g-hypergroupoids. Further,
we construct a sequence of g-hypergroupoids and investigate some
relationships between it?s terms. Also, we study the quotient of a
g-hypergroupoid by defining a regular relation. Finally, we describe
fundamental relation of an Hv-semigroup as a g-hypergroupoid.
Identities related to special polynomials and combinatorial numbers
Authors: Yuluklu Eda , Simsek Yilmaz , Komatsu Takao
Published: March 2018

The aim of this paper is to give some new identities and relations related to
the some families of special numbers such as the Bernoulli numbers, the
Euler numbers, the Stirling numbers of the first and second kinds, the
central factorial numbers and also the numbers y1(n,k,?) and y2(n,k,?)
which are given Simsek [31]. Our method is related to the functional
equations of the generating functions and the fermionic and bosonic p-adic
Volkenborn integral on Zp. Finally, we give remarks and comments on our
results.
A fixed point theorem for JS-contraction type mappings with applications to polynomial approximations
Authors: Altun Ishak , Al Arifi , Jleli Mohamed , Lashine Aref , Samet Bessem
Published: March 2018

A fixed point theorem is established for a new class of JS-contraction type
mappings. As applications, some Kelisky-Rivlin type results are obtained for
linear and nonlinear q-Bernstein-Stancu operators.
Some new inequalities of Simpson’s type for s-convex functions via fractional integrals
Authors: Chen Jianhua , Huang Xianjiu
Published: March 2018

In this paper, we establish some new inequalities of Simpson?s type based on
s-convexity via fractional integrals. Our results generalize the results
obtained by Sarikaya et al. [1].
Warped product bi-slant submanifolds of cosymplectic manifolds
Authors: Alqahtani Lamia , Stankovic Mica , Uddin Siraj
Published: March 2018

In this paper, we study warped product bi-slant submanifolds of cosymplectic
manifolds. It is shown that there is no proper warped product bi-slant
submanifold other than pseudo-slant warped product. Finally, we give an
example of warped product pseudo-slant submanifolds.
Completion of locally convex cones
Authors: Ayaseh Davood , Ranjbari Asghar
Published: March 2018

We define the concept of completion for locally convex cones. We show that
how a locally convex cone with (SP) can be embedded as an upper dense
subcone in an upper complete locally convex cone with (SP). We prove that
every upper complete locally convex cone with (SP) is also symmetric
complete.
On submersions of the complex indicatrix
Authors: Popovicia Elena
Published: March 2018

In this paper we study the complex indicatrix associated to a complex
Finsler space as an embedded CR - hypersurface of the holomorphic tangent
bundle, considered in a fixed point. Following the study of CR -
submanifolds of a K?hler manifold, there are investigated some properties
of the complex indicatrix as a real submanifold of codimension one, using
the submanifold formulae and the fundamental equations. As a result, the
complex indicatrix is an extrinsic sphere of the holomorphic tangent space
in each fibre of a complex Finsler bundle. Also, submersions from the
complex indicatrix onto an almost Hermitian manifold and some properties
that can occur on them are studied. As application, an explicit submersion
onto the complex projective space is provided.
Openness and continuity in locally convex cones
Authors: Jafarizad Somayyeh , Ranjbari Asghar
Published: March 2018

In this paper we define nearly continuity and nearly openness of linear
operators between locally convex cones. Also we give some conditions on
locally convex cones and linear operators which ensure that every nearly
continuous (nearly open) mapping is continuous (open). We show by an example
that a nearly continuous operator is not necessarily continuous.
A new application of quasi monotone sequences and quasi power increasing sequences to factored infinite series
Authors: Bor Hüseyin
Published: March 2018

In this paper, we generalize a known theorem under more weaker conditions
dealing with the generalized absolute Ces?ro summability factors of
infinite series by using quasi monotone sequences and quasi power increasing
sequences. This theorem also includes some new results.
Finite dimensional locally convex cones
Authors: Ayaseha Davood
Published: March 2018

We study the locally convex cones which have finite dimension. We introduce
the Euclidean convex quasiuniform structure on a finite dimensional cone. In
special case of finite dimensional locally convex topological vector spaces,
the symmetric topology induced by the Euclidean convex quasiuniform
structure reduces to the known concept of Euclidean topology. We prove that
the dual of a finite dimensional cone endowed with the Euclidean convex
quasiuniform structure is identical with it?s algebraic dual.
Global exponential stability of multi-group models with multiple dispersal and stochastic perturbation based on graph-theoretic approach
Authors: Guo Ying , Li Yingjian , Ding Xiaohua
Published: March 2018

This paper is concerned with a more general model of multi-group models with
multiple dispersal and stochastic perturbation, in which dispersal among
multiple groups and stochastic perturbation are considered at the same time.
By combining graph theory with Lyapunov method, we derive two types of
sufficient criteria which are in the form of Lyapunov-type and coefficient-type
respectively, to guarantee the global exponential stability of the model.
Furthermore, coefficient-type criterion is successfully applied to stochastic
coupled oscillators system. Finally, we offer a numerical example to
illustrate the effectiveness and feasibility of the main results.
Further investigations on Fujimoto type strong uniqueness polynomials
Authors: Banerjee Abhijit , Chakraborty Bikash , Mallick Sanjay
Published: March 2018

Taking the question posed by the first author in [1] into background, we
further exhaust-ably investigate existing Fujimoto type Strong Uniqueness
Polynomial for Meromorphic functions (SUPM). We also introduce a new kind of
SUPM named Restricted SUPM and exhibit some results which will give us a new
direction to discuss the characteristics of a SUPM. Moreover, throughout the
paper, we pose a number of open questions for future research.
On the diophantine equation x2+5a·pb=yn
Authors: Demırcı Musa
Published: March 2018

In this paper, all the solutions of the Diophantine equations x2 + 5a?pb =
yn (for p = 29,41) are given for nonnegative integers a,b,x,y,n ? 3
with x and y coprime.
Dynamics of a delayed competitive system affected by toxic substances with imprecise biological parameters
Authors: Pal A.K. , Dolai P. , Samanta G.P.
Published: March 2018

In this paper we have studied the dynamical behaviours of a delayed
two-species competitive system affected by toxicant with imprecise biological
parameters. We have proposed a method to handle these imprecise parameters
by using parametric form of interval numbers. We have discussed the
existence of various equilibrium points and stability of the system at these
equilibrium points. In case of toxic stimulatory system, the delay model
exhibits a stable limit cycle oscillation. Computer simulations are carried
out to illustrate our analytical findings.
Spectrum and L-spectrum of the power graph and its main supergraph for certain finite groups
Authors: Hamzeh Asma , Ashrafi Ali
Published: March 2018

Let G be a finite group. The power graph P(G) and its main supergraph S(G)
are two simple graphs with the same vertex set G. Two elements x,y ? G are
adjacent in the power graph if and only if one is a power of the other. They
are joined in S(G) if and only if o(x)|o(y) or o(y)|o(x). The aim of this
paper is to compute the characteristic polynomial of these graph for certain
finite groups. As a consequence, the spectrum and Laplacian spectrum of
these graphs for dihedral, semi-dihedral, cyclic and dicyclic groups were
computed.
Different types of Hyers-Ulam-Rassias stabilities for a class of integro-differential equations
Authors: Castro L.P. , Simões A.M.
Published: March 2018

We study different kinds of stabilities for a class of very general nonlinear
integro-differential equations involving a function which depends on the
solutions of the integro-differential equations and on an integral of
Volterra type. In particular, we will introduce the notion of
semi-Hyers-Ulam-Rassias stability, which is a type of stability somehow
in-between the Hyers-Ulam and Hyers-Ulam-Rassias stabilities. This is
considered in a framework of appropriate metric spaces in which sufficient
conditions are obtained in view to guarantee Hyers-Ulam-Rassias,
semi-Hyers-Ulam-Rassias and Hyers-Ulam stabilities for such a class of
integro-differential equations. We will consider the different situations of
having the integrals defined on finite and infinite intervals. Among the
used techniques, we have fixed point arguments and generalizations of the
Bielecki metric. Examples of the application of the proposed theory are
included.
Scattering theory of impulsive Sturm-Liouville equations
Authors: Bairamov Elgiz , Aygar Yelda , Eren Basak
Published: March 2018

In this paper, we investigate scattering theory of the impulsive
Sturm-Liouville boundary value problem (ISBVP). In particular, we find the
Jost solution and the scattering function of this problem. We also study the
properties of the Jost function and the scattering function of this ISBVP.
Furthermore, we present two examples by getting Jost function and scattering
function of the impulsive boundary value problem. Besides, we examine the
eigenvalues of these boundary value problems given in examples in detail.