bluuebunny/crossref_metadata_2025 huggingface dataset:
The Research of Tripartite Collaborative Governance on Disorderly Parking of Shared Bicycles Based on the Theory of Planned Behavior and Motivation Theories—A Case of Beijing, China
Authors: Zhao Daozhi , Wang Di
Published: September 2019

With the maturity of mobile payments and internet technology, a new type of travel mode, shared bicycles, was brought out by China’s urban transport under the impetus of “the last mile” travel demand. Although convenient travel has been achieved by using shared bicycles, the resulting problems such as disorderly parking and the deposition of bicycles could severely influence urban traffic order and impede the sustainable development of shared bicycles. Based on the quasi-public goods property of shared bicycles, this article established a management system for the tripartite collaborative governance of disorderly bicycle parking by virtue of regulating the bicycle parking behavior of users, the promoting of multiple propaganda and macro-institutional controls of the government, and acquiring technique support of enterprise “entry settlement”. Furthermore, considering the influence on the governance effect of user conduct, a structural model for guiding users to regulate bicycle parking to guarantee the governance effect by adopting material incentive and spiritual motivation was established via the utilization of the theory of planned behavior and motivation theories, and multiple hypotheses were also proposed. In this article, users of shared bikes in Beijing, China were selected as the research objects, and a questionnaire survey was adopted as the empirical research method. In addition, the governance validity on disorderly parking of the collaborative governance model was tested via hierarchical regression analysis after the collection and analysis of the factors influencing bicycle parking behavior of users. The obtained results show that the tripartite collaborative governance model could enhance the regular parking consciousness of users and improve the governance effect of disorderly parking. The research conclusion of this article could provide feasible suggestions for the governance of bicycle disorderly parking and propel the sustainable development of shared bicycles.
Efficient Energy-Management System Using A Hybrid Transactive-Model Predictive Control Mechanism for Prosumer-Centric Networked Microgrids
Authors: Galvan Eric , Mandal Paras , Chakraborty Shantanu , Senjyu Tomonobu
Published: September 2019

With the development of distributed energy resources (DERs) and advancements in technology, microgrids (MGs) appear primed to become an even more integral part of the future distribution grid. In order to transition to the smart grid of the future, MGs must be properly managed and controlled. This paper proposes a microgrid energy management system (MGEMS) based on a hybrid control algorithm that combines Transactive Control (TC) and Model Predictive Control (MPC) for an efficient management of DERs in prosumer-centric networked MGs. A locally installed home energy management system (HEMS) determines a charge schedule for the battery electric vehicle (BEV) and a charge–discharge schedule for the solar photovoltaic (PV) and battery energy storage system (BESS) to reduce residential customers’ operation cost and to improve their overall savings. The proposed networked MGEMS strategy was implemented in IEEE 33-bus test system and evaluated under different BEV and PV-BESS penetration scenarios to study the potential impact that large amounts of BEV and PV-BESS systems can have on the distribution system and how different pricing mechanisms can mitigate these impacts. Test results indicate that our proposed MGEMS strategy shows potential to reduce peak load and power losses as well as to enhance customers’ savings.
Coffee Roasters’ Sustainable Sourcing Decisions and Use of the Direct Trade Label
Authors: Gerard Andrew , Lopez Maria Claudia , McCright Aaron M.
Published: September 2019

This paper analyzes motivations for coffee roasters to source directly from farmers and how roasters decide whether to use the Direct Trade sustainability label. Direct Trade is an uncertified label connoting an approach wherein roasters negotiate coffee price and quality with farmers without intermediaries, with purported farmer income benefits. We examine semi-structured interviews with 11 US roasters and three coffee stakeholders to identify motivations to source directly, provide customers sourcing information, and use or reject the Direct Trade label. We find that roasters directly source coffee primarily for quality reasons and communicate about sourcing because they believe customers would value coffee more if they understood their sustainable sourcing practices. However, the lack of a clear definition for the Direct Trade label, coffee roaster concerns about the label’s utility, and the threat of “free riders” disincentivizes label use. Without a shared label, customers face high costs for information about directly sourced coffee, which may limit the expansion of a sourcing practice that could benefit farmers.
Study on Clustering of Free-Floating Bike-Sharing Parking Time Series in Beijing Subway Stations
Authors: Xu Dandan , Bian Yang , Rong Jian , Wang Jiachuan , Yin Baocai
Published: September 2019

In recent years, the free-floating bike-sharing (FFBS) system has become a significant mode of travel to satisfy urban residents’ travel demands. However, with the rapid development of FFBS, many problems have arisen, among which the parking problem is the most prominent. To solve the FFBS parking problem around urban subways, firstly, the time series of FFBS parking pattern and subway station classification in Beijing were constructed based on parking intensity, showing a significant spatial distribution of subway stations with different intensity levels. Second, a hierarchical clustering method based on dynamic time warping (DTW) was proposed to cluster the FFBS parking time series. Subway stations in Beijing were grouped into 11 clusters, and the clustering purity reached 0.939, which achieved the expected effect. Then, the peak and off-peak period features of time series were extracted to discuss the clustering results. Finally, a two-level early-warning index for monitoring FFBS was constructed, which took the real-time parking quantity and land use capacity of FFBS into consideration. And FFBS parking management strategies for different early-warning indices were put forward. It is very important for the sustainable development of FFBS and cities.
Space Independent Image Registration Using Curve-Based Method with Combination of Multiple Deformable Vector Fields
Authors: Watcharawipha Anirut , Theera-Umpon Nipon , Auephanwiriyakul Sansanee
Published: September 2019

This paper proposes a novel curve-based or edge-based image registration technique that utilizes the curve transformation function and Gaussian function. It enables deformable image registration between images in different spaces, e.g., different color spaces or different medical image modalities. In particular, piecewise polynomial fitting is used to fit a curve and convert it to the global cubic B-spline control points. The transformation between the curves in the reference and source images are performed by using these control points. The image area is segmented with respect to the reference curve for the moving pixels. The Gaussian function, which is symmetric about the coordinates of the points of the reference curve, was used to improve the continuity in the intra- and inter-segmented areas. The overall result on curve transformation by means of the Hausdroff distance was 5.820 ± 1.127 pixels on average on several 512 × 512 synthetic images. The proposed method was compared with an ImageJ plugin, namely bUnwarpJ, and a software suite for deformable image registration and adaptive radiotherapy research, namely DIRART, to evaluate the image registration performance. The experimental result shows that the proposed method yielded better image registration performance than its counterparts. On average, the proposed method could reduce the root mean square error from 2970.66 before registration to 1677.94 after registration and can increase the normalized cross-correlation coefficient from 91.87% before registration to 97.40% after registration.
Hydrodynamic-Interaction Analysis of an Autonomous Underwater Hovering Vehicle and Ship with Wave Effects
Authors: Chen Chen-Wei , Chen Ying , Cai Qian-Wen
Published: September 2019

A new vertical axis-symmetrical dish-shaped autonomous underwater vehicle (AUV) with excellent maneuverability, known as the autonomous underwater hovering vehicle (AUH), is proposed. This study investigates an important working model of the AUH approaching a host ship in waves. The working model of AUH–Ship interactions deals with hydrodynamic interaction, seakeeping performance for communication, launch, and recovery near a free surface. The AUH is able to navigate and implement homing automation through acoustic positioning equipment, a depth sensor, a heading compass, and a Doppler velocity log (DVL) in the working area based on numerical analysis of AUH–Ship hydrodynamic performance in this study. The hydrodynamic-interaction performance of the AUH and ship near free surfaces is analyzed in the frequency and time domains using a potential-based surface-panel method based on a commercial computational fluid dynamics (CFD) solver (ANSYS-AQWA), i.e., a 3D panel code of seakeeping performance module in the ANSYS platform where the fluid is assumed to be irrotational, inviscid, and incompressible. The motion performance of the AUH approaching the host ship, with a dynamic positioning system in waves, is studied by estimating interactive response-amplitude operators (RAOs) of the AUH and host ship in 6-DOF that were estimated and analyzed at different wave amplitudes and frequencies. In the ship and AUH interaction simulations, the host ship is assumed to be a well-posed station keeping in waves with zero service speed. The AUH and ship interference effect is studied at different distances to appropriate recovery and launch positions for the AUH at the following sea and beam sea, i.e., wave-encounter angles 0° and 90°, respectively. In addition, the hydrodynamic interaction of the AUH and ship in yaw and roll at different AUH velocities is estimated. The AUH motion performance approaching the ship in long-crested irregular seas is analyzed in the time domain using the Pierson–Moskowitz wave spectrum model. Viscid hydrodynamic force on AUH motion in roll near a free surface was significant. A damping model was adopted to formulate the viscid effect to enhance the effectiveness of the ANSYS-AQWA inviscid potential-based solver. Numerical analysis of motion RAO of the AUH in roll with the damping effect was compared to the experimental data in wave-frequency range 0.2–1.0 Hz, resulting in the average error being reduced from 21.03% to 9.95% to verify the method’s accuracy. The proposed method conveniently and accurately predicted hydrodynamic-interaction characteristics and motion RAO for a dish-type AUH and host ship for the precise use of mounted sensors in waves. The results of these simulations can be used to analyze the homing automation and adaptive controllability to advance the AUV development and design.
Comparison and Classification of Flexible Distributions for Multivariate Skew and Heavy-Tailed Data
Authors: Babić Slađana , Ley Christophe , Veredas David
Published: September 2019

We present, compare and classify popular families of flexible multivariate distributions. Our classification is based on the type of symmetry (spherical, elliptical, central symmetry or asymmetry) and the tail behaviour (a single tail weight parameter or multiple tail weight parameters). We compare the families both theoretically (relevant properties and distinctive features) and with a Monte Carlo study (comparing the fitting abilities in finite samples).
Development of Real-Time Immuno-PCR Based on Phage Displayed an Anti-Idiotypic Nanobody for Quantitative Determination of Citrinin in Monascus
Authors: Huang Wenping , Tu Zhui , Ning Zhenqiang , He Qinghua , Li Yanping
Published: September 2019

Citrinin (CIT) is a mycotoxin that has been detected in agricultural products, feedstuff, and Monascus products. At present, research has been performed to develop methods for CIT detection, mainly through TLC, HPLC, biosensor, and immunoassay. The immunoassay method is popular with researchers because of its speed, economy, simplicity, and ease of control. However, mycotoxins are inevitably introduced during the determination. Immunoassays require the use of toxins coupled to carrier proteins or enzymes to make competitive antigens. In this study, anti-idiotypic nanobody X27 as CIT mimetic antigen was used as non-toxic surrogate reagents in immunoassay. Therefore, the X27-based real-time immuno-PCR (rtIPCR) method had been established after optimal experiments of annealing temperature and amplification efficiency of real-time PCR, concentration of coating antibody, phage X27, and methyl alcohol. The IC50 value of the established method in the present study is 9.86 ± 2.52 ng/mL, which is nearly equivalent to the traditional phage ELISA method. However, the linear range is of 0.1–1000 ng/mL, which has been broadened 10-fold compared to the phage ELISA method. Besides, the X27-based rtIPCR method has no cross-reactivity to the common mycotoxins, like aflatoxin B1 (AFB1), deoxynivalenol (DON), ochratoxin A (OTA), and zearalenone (ZEN). The method has also been applied to the determination of CIT in rice flour and flour samples, and the recovery was found to be in the range of 90.0–104.6% and 75.8–110.0% respectively. There was no significant difference in the results between the rtIPCR and UPLC–MS. The anti-idiotypic nanobody as a non-toxic surrogate of CIT makes rtIPCR a promising method for actual CIT analysis in Monascus products.
Baseline Serum Vitamin A and D Levels Determine Benefit of Oral Vitamin A&D Supplements to Humoral Immune Responses Following Pediatric Influenza Vaccination
Authors: Patel Nehali , Penkert Rhiannon R. , Jones Bart G. , Sealy Robert E. , Surman Sherri L. , Sun Yilun , Tang Li , DeBeauchamp Jennifer , Webb Ashley , Richardson Julie , Heine Ryan , Dallas Ronald H. , Ross A. Catharine , Webby Richard , Hurwitz Julia L.
Published: September 2019

Maximizing vaccine efficacy is critical, but previous research has failed to provide a one-size-fits-all solution. Although vitamin A and vitamin D supplementation studies have been designed to improve vaccine efficacy, experimental results have been inconclusive. Information is urgently needed to explain study discrepancies and to provide guidance for the future use of vitamin supplements at the time of vaccination. We conducted a randomized, blinded, placebo-controlled study of influenza virus vaccination and vitamin supplementation among 2 to 8 (inclusive) year old children over three seasons, including 2015–2016 (n = 9), 2016–2017 (n = 44), and 2017–2018 (n = 26). Baseline measurements of vitamins A and D were obtained from all participants. Measurements were of serum retinol, retinol-binding protein (RBP, a surrogate for retinol), and 25-hydroxyvitamin D (25(OH)D). Participants were stratified into two groups based on high and low incoming levels of RBP. Children received two doses of the seasonal influenza virus vaccine on days 0 and 28, either with an oral vitamin supplement (termed A&D; 20,000 IU retinyl palmitate and 2000 IU cholecalciferol) or a matched placebo. Hemagglutination inhibition (HAI) antibody responses were evaluated toward all four components of the influenza virus vaccines on days 0, 28, and 56. Our primary data were from season 2016–2017, as enrollment was highest in this season and all children exhibited homogeneous and negative HAI responses toward the Phuket vaccine at study entry. Responses among children who entered the study with insufficient or deficient levels of RBP and 25(OH)D benefited from the A&D supplement (p < 0.001 for the day 28 Phuket response), whereas responses among children with replete levels of RBP and 25(OH)D at baseline were unaffected or weakened (p = 0.02 for the day 28 Phuket response). High baseline RBP levels associated with high HAI titers, particularly for children in the placebo group (baseline RBP correlated positively with Phuket HAI titers on day 28, r = 0.6, p = 0.003). In contrast, high baseline 25(OH)D levels associated with weak HAI titers, particularly for children in the A&D group (baseline 25(OH)D correlated negatively with Phuket HAI titers on day 28, r = −0.5, p = 0.02). Overall, our study demonstrates that vitamin A&D supplementation can improve immune responses to vaccines when children are vitamin A and D-insufficient at baseline. Results provide guidance for the appropriate use of vitamins A and D in future clinical vaccine studies.
Removal of Organic Pollution in the Water Environment
Authors: Karpińska Joanna , Kotowska Urszula
Published: September 2019

The development of civilization entails a growing demand for consumer goods. A side effect of the production and use of these materials is the production of solid waste and wastewater. Municipal and industrial wastewater usually contain a large amount of various organic compounds and are the main source of pollution of the aquatic environment with these substances. Therefore, the search for effective methods of wastewater and other polluted water treatment is an important element of caring for the natural environment. This Special Issue contains nine peer-review articles presenting research on the determination and removal of environmentally hazardous organic compounds from aqueous samples. The presented articles were categorized into three major fields: new approaches to the degradation of water pollutants, new methods of isolation and determination of the emerging organic contaminants (EOCs), and the occurrence of EOCs in the water environment. These articles present only selected issues from a very wide area, which is the removal of organic pollution in water environment, but can serve as important references for future studies.
N-Nitrosodimethylamine Formation from Treatment of Seasonally and Spatially Varying Source Water
Authors: Meadows Maxwell C. , Pradhanang Soni M. , Fujioka Takahiro , Kodamatani Hitoshi , Leddy Menu B. , Boving Thomas B.
Published: September 2019

N-nitrosodimethylamine (NDMA) is a disinfection by-product (DBP) that has been classified as a probable human carcinogen in multiple risk assessments. NDMA presence in drinking water is widespread and dependent on source water, disinfectant type, precursors, and water treatment strategies. The objectives of this study were to investigate NDMA formation potential in a modeled monochloramine water treatment plant (WTP) fed by seasonally and spatially varying source water; and to optimize DBP precursor removal by combining conventional and additional treatment techniques. After NDMA analysis, it was found that NDMA formation was significantly dependent on source water type and monochloramine contact time (CT); e.g., at 24 h CT, Cork Brook produced 12.2 ng/L NDMA and Bailey Brook produced 4.2 ng/L NDMA, compared with 72 h CT, Cork Brook produced 4.1 ng/L NDMA and Bailey Brook produced 3.4 ng/L NDMA. No correlations were found between traditional DBP precursors such as total organic carbon and total nitrogen, and the formation of NDMA. The laboratory bench-top treatment system was highly effective at removing traditional DBP precursors, highlighting the need for WTPs to alter their current treatment methods to best accommodate the complex system of DBP control.
Mitigating the Effects of Sea-Level Rise on Estuaries of the Mississippi Delta Plain Using River Diversions
Authors: White Eric D. , Meselhe Ehab , Reed Denise , Renfro Alisha , Snider Natalie Peyronnin , Wang Yushi
Published: September 2019

Using the Mississippi River as a tool for restoration has been a key element of restoration planning in Louisiana for decades. The results of allowing river water and sediment back into the coastal system are manifested in a number of places in present day Louisiana, with additional plans for large scale sediment and water diversions from the Mississippi River. Many previous numerical modeling studies have focused on sediment delivery to Louisiana estuaries. This study examines the effects of river diversions on salinity gradients in receiving estuarine basins. The Integrated Compartment Model, a planning-level model that simulates multi-decadal change in estuarine hydrodynamics and wetland systems under assumed sea-level rise scenarios, was used to assess the estuarine salinity gradient under potential management regimes. The simulations for current conditions are compared to a future 50-year simulation with additional diversions, as well as cases with a variety of diversion options. This modeling analysis shows that without additional action, 50-years of sea-level rise could result in substantial increases in salinity throughout the Mississippi Delta Plain estuaries. This can be largely offset with additional large river diversions which can maintain variable salinity gradients throughout the estuary basins.
Efficient and Accurate 3-D Numerical Modelling of Landslide Tsunami
Authors: Li Guodong , Chen Guoding , Li Pengfeng , Jing Haixiao
Published: September 2019

High-speed and accurate simulations of landslide-generated tsunamis are of great importance for the understanding of generation and propagation of water waves and for prediction of these natural disasters. A three-dimensional numerical model, based on Reynolds-averaged Navier–Stokes equations, is developed to simulate the landslide-generated tsunami. Available experiment data is used to validate the numerical model and to investigate the scale effect of numerical model according to the Froude similarity criterion. Based on grid convergence index (GCI) analysis, fourteen cases are arranged to study the sensitivity of numerical results to mesh resolution. Results show that numerical results are more sensitive to mesh resolution in near field than that in the propagation field. Nonuniform meshes can be used to balance the computational efficiency and accuracy. A mesh generation strategy is proposed and validated, achieving an accurate prediction and nearly 22 times reduction of computational cost. Further, this strategy of mesh generation is applied to simulate the Laxiwa Reservoir landslide tsunami. The results of this study provide an important guide for the establishment of a numerical model of the real-world problem of landslide tsunami.
Characteristics and Adaptability Assessment of Commonly Used Ecological Flow Methods in Water Storage and Hydropower Projects, the Case of Chinese River Basins
Authors: Ma Lejun , Wang Huan , Qi Changjun , Zhang Xinnan , Zhang Hanwen
Published: September 2019

The construction and operation of water storage and hydropower projects affects the structure of water ecosystems of downstream rivers, and the establishment of ecological flow in rivers below the water storage and hydropower projects has significant impacts on maintaining the stability of river ecosystems. A database was established based on 2000–2017 environmental impact assessment (EIA) reports on water storage and hydropower projects in China and ecological flow (e-flow) methods, and the three widely used e-flow methods for water storage and hydropower projects in China were identified on the database. Furthermore, an ecological flow satisfaction degree model was used to evaluate the methods using long series of historical hydrological data from the hydrological stations in the Yellow River basin, the Yangtze River basin, and the Liao River basin. The results showed that hydrological methods are the type most often used for water storage and hydropower projects in China, including the Tennant method, the minimum monthly average flow with 90% guarantee rate method (Mm9M method), and the measured historical minimum daily average flow rate method (MDM method). However, the ecological flow methods selected are not significantly different among different basins, indicating that the selection of ecological flow methods is rather arbitrary, and adaptability analysis is not available. The results of the ecological flow satisfaction model showed that the Tennant method is not suitable for large river basins. The results of this study can provide technical support for establishment and management decisions surrounding ecological flow.
Everyday Practices, Everyday Water: From Foucault to Rivera-Cusicanqui (with a Few Stops in between)
Authors: Furlong Kathryn , Roca-Servat Denisse , Acevedo-Guerrero Tatiana , Botero-Mesa María
Published: September 2019

In this article, we explore elements of the literature on practices and the everyday to provide reference points for water researchers. We cast a wide net in recognition of the complex and multifaceted nature of human relationships to water that cannot be reduced to a single perspective. The article begins with the work of prominent French theorists including Foucault, Lefebvre, Bourdieu and de Certeau. Each grapples with the interrelationship between wider socio-political processes and practice in different ways. This leads us to pragmatism and non-representational theory in the second section, which argue that to understand socio-political processes, one must begin from practices. In the third section, we engage with work on practices in conditions of instability and precarity, which are widespread under contemporary conditions of post-colonial neoliberalism, and the role of “care” in mitigating their effects. In section four, we discuss the scholarship and practice of Silvia Rivera-Cusicanqui, who explores and extends many of the approaches elaborated above. The article concludes with a reflection on what this means for engaging with the multiple realities and ways of living with water.
Characterisation of the Water Renewal in a Macro-Tidal Marina Using Several Transport Timescales
Authors: Huguet Jean-Rémy , Brenon Isabelle , Coulombier Thibault
Published: September 2019

In this paper, we investigate the water renewal of a highly populated marina, located in the south-west of France, and subjected to a macro-tidal regime. With the use of a 3D-numerical model (TELEMAC-3D), three water transport timescales were studied and compared to provide a fully detailed description of the physical processes occurring in the marina. Integrated Flushing times (IFT) were computed through a Eulerian way while a Lagrangian method allowed to estimate Residence Times (RT) and Exposure Times (ET). From these timescales, the return-flow (the fraction of water that re-enters the marina at flood after leaving the domain at ebb) was quantified via the Return-flow Factor (RFF) and the Return Coefficient (RC) parameters. The intrinsic information contained in these parameters is thoroughly analysed, and their relevance is discussed. A wide range of weather-marine conditions was tested to provide the most exhaustive information about the processes occurring in the marina. The results highlight the significant influence of the tide and the wind as well as the smaller influence of the Floating Structures (FS) on the renewal. Besides, this study provides the first investigation of the water exchange processes of La Rochelle marina. It offers some content that interest researchers and environmental managers in the monitoring of pollutants as well as biological/ecological applications.
Validation of a Novel, Shear Reynolds Number Based Bed Load Transport Calculation Method for Mixed Sediments against Field Measurements
Authors: Török Gergely T. , Józsa János , Baranya Sándor
Published: September 2019

In this study, the field measurement-based validation of a novel sediment transport calculation method is presented. River sections with complex bed topography and inhomogeneous bed material composition highlight the need for an improved sediment transport calculation method. The complexity of the morphodynamic features (spatially and temporally varied bed material) can result in the simultaneous appearance of the gravel and finer sand dominated sediment transport (e.g., parallel bed armoring and siltation) at different regions within a shorter river reach. For the improvement purpose of sediment transport calculation in such complex river beds, a novel sediment transport method was elaborated. The base concept of it was the combined use of two already existing empirical sediment transport models. The method was already validated against laboratory measurements. The major goal of this study was the verification of the novel method with a real river case study. The combining of the two sediment transport models was based on the implementation of a recently presented classification method of the locally dominant sediment transport nature (gravel or sand transport dominates). The results were compared with measured bed change maps. The verification clearly referred to the meaningful improvement in the sediment transport calculation by the novel manner in the case of spatially varying bed content.
Sınıf Öğretmenlerinin Fen Bilimlerinde Yapılandırmacı Öğrenme Yaklaşımı Uygulamalarının Öğretmen Liderliği Davranışlarına Etkileri
Authors: KORKMAZ Murat , ÖZEN Hamit
Published: September 2019

Bu araştırma ile sınıf öğretmenlerinin fen bilimlerinde yapılandırmacı öğrenme uygulamalarının okuldaki liderlik davranışları üzerine etkilerinin belirlenmesi amaçlanmıştır. Çalışmada veriler Yapılandırmacı Öğrenme Ortamı Ölçeği, Öğretmen Liderlik Ölçeği ve Kişisel Bilgi Formu ile toplanmıştır. Araştırmada ilişkisel araştırma yöntemi uygulanmıştır. Çalışma grubunu Eskişehir ili Odunpazarı ilçesindeki 16 okuldan gönüllü olarak katılan 240 sınıf öğretmeni, evrenini Odunpazarı ilçesindeki 1002 sınıf öğretmeni oluşturmaktadır. Elde edilen veriler ile SPSS programı kullanılarak değişkenler arasındaki ilişki araştırılmıştır. Verilerin çözümlenmesinde t-testi, ANOVA, korelasyon ve basit doğrusal regresyon analizi kullanılmıştır. Çalışma bulgularına göre, erkek öğretmenlerin kadın öğretmenlere göre daha az mesleki gelişimlerine katkı sağladıkları tespit edilmiştir. Öğretmen Liderliği Beklenti boyutu ile Öğretmen Liderliği Algı boyutu arasında, Öğretmen Liderliği Beklenti boyutu ile Yapılandırmacı Öğrenme Ortamı uygulama düzeyi arasında ve Öğretmen Liderliği Algı boyutu ile Yapılandırmacı Öğrenme Ortamı uygulama düzeyi arasında pozitif yönlü anlamlı ilişkilerin olduğu sonucuna varılmıştır. Regresyon analizi sonucunda liderlik beklenti boyutunun sınıf öğretmenlerinin fen bilimlerinde Yapılandırmacı Öğrenme Ortamı uygulama düzeylerindeki toplam varyansın %10,9 ‘unu, Öğretmen Liderliği Ölçeği Algı boyutunun sınıf öğretmenlerinin fen bilimlerinde Yapılandırmacı Öğrenme Ortamı uygulama düzeylerindeki toplam varyansın %14,3 ‘ünü açıkladığı sonucuna ulaşılmıştır. Yapılandırmacı öğrenme ortamını sınıfında kullanan bir öğretmenin, öğretmen liderliğinin beklenen ve algılanan özelliklerini gösterebileceği değerlendirilmektedir.
STUDY ON EXTRACTION PROCESS, CHEMICAL COMPOSITION AND
ANTIBACTERIAL ACTIVITY OF GINGER OIL IN THUA THIEN HUE
Authors: Le Thi Bich Hien , Le Thi Minh Quy , Nguyen Le Lam Thuy , Nguyen Thi Hoai
Published: September 2019

Background: Ginger oil has long been used in the food and pharmaceutical industries to cure vomiting, abdominal pain, dyspepsia, diarrhea... The subject aims to extract, determine chemical composition and antibacterial activity of ginger oil in Thua Thien Hue.

Materials and method: Materials: Rhizomes of Zingiber oficinalis. Method: hydrodistillation method, gas chromatography and mass spectrometry analysis, and diffusion method on agar-agar disk.

Results: Extraction process: Materials was milled to semi-fine powder, extracted in 3 hours, solvent-materials ratio was 3:1, with material within 10 days of harvesting. GC-MS analysis revealed 16 constituents in the ginger oil, in which the main component was Alpha-zingerberene. Ginger oil possessed antibacterial activity against Staphylococcus aureus and Bacillus subtilis with the same MIC values of 43.8 mg/ml.

Conclusion: The results were contributed to determine extraction process, chemical composition and antibacterial activity of ginger oil in Thua Thien Hue.

Key words: Ginger oil, antibacterial, extraction, Alpha-zingerberene, Zingiber officinale
Značenje Bonaventurine distinkcije entis et esse
Authors: Relja Hrvoje
Published: September 2019

U radu se pokazuje kako je sveti Bonaventura, kao uostalom i svi kršćanski filozofi, adoptirao pojam bitka kako bi na ontološkoj razini objasnio stvorenost stvorenja jer se metafizički uviđa da svako stvoreno biće, ukoliko je stvoreno, nužno prima svoj bitak od Stvoritelja. To posljedično zahtjeva da na osnovnoj ontološkoj razini stvoreno biće bude metafizički sastavljeno od bitka i njemu komplementarnog počela, a što Serafski naučitelj formulira kao sastavljenost od entis et esse. Iako sâm Bonaventura ne daje pobliže tumačenje naravi te navedene sastavljenosti od entis et esse ipak se ona dade, kako je u članku pokazano, deducirati iz njegovih osnovnih filozofskih i teoloških teza, koje pretpostavljaju prethodno pojmljenu osnovnu ontološku strukturu bića. Slijedom te dedukcije može se zaključiti da se Bonaventurina sastavljenost od entis et esse ne može interpretirati na način tomističke metafizike bitka, već da ju je plauzibilno shvatiti u svjetlu esencijalističke metafizike, i to kao sastavljenost na transcendentalnoj razini od dvaju realno različitih počela: od bîti, tj. potpuno definiranog/određenog/individualnog mogućeg bića, te od bitka, čina postojanja realnog konkretnog bića.
Neki elementi i načela konfesionalnosuradničkog vjeronauka
Authors: Garmaz Jadranka , Stala Józef
Published: September 2019

Rad analizira razloge, sadržaj i uvjete konfesionalne suradnje u nastavi katoličkog vjeronauka. U radu se analiziraju neki elementi koji osiguravaju uvjete za konfesionalnosuradnički vjeronauk i pokušavaju se iznjedriti neka vjeronaučna načela konfesionalnosuradničkog vjeronauka, prema primjeru i iskustvima iz SR Njemačke. U drugom dijelu članka podastiru se izazovi koji predstoje vjeronauku za praksu, institucionalnu i znanstvenu razinu kao i za mjesne vjeroučitelje. U trećem dijelu se unutar društveno-kulturnog i religijskog konteksta Republike Hrvatske vjeronauk utvrđuje kao teološko mjesto u kojem treba integrirati didaktička načela holističke i grupne nastave, sadržaje društvenog nauka Katoličke Crkve i na taj način izgraditi temelje otvorene, suradničke nastave, međureligijskog i ekumenskog karaktera, utemeljene na koncilskom učenju, na bioetičkim načelima i sadržajima društvenog nauka Katoličke Crkve.
Čovjek, crkva i društvo u porukama Ivana Pavla II. u Splitu i Solinu 1998.
Authors: Petrov Emanuel
Published: September 2019

O dvadesetoj obljetnici pohoda sv. Ivana Pavla II. Hrvatskoj autor analizira Papine poruke, s posebnim naglaskom na susrete u Splitu i Solinu, želeći s vremenskim odmakom od 20 godina naći uporište i neprolazne vrijednosti za Crkvu i suvremeno hrvatsko društvo. Istine o čovjeku, Crkvi i društvu na koje Papa upozorava utemeljene su na evanđeoskoj riznici i povijesnom iskustvu te imaju neprolaznu vrijednost, a nakon dva desetljeća pozivaju na pastoralnu i društvenu inventuru. U središtu pozornosti je čovjek, njegov identitet i poslanje u Crkvi i društvu. Papa se predstavlja kao hodočasnik evanđelja, jer za njega evanđelje predstavlja divljenje nad dostojanstvom čovjeka u svjetlu objave. Tako osvijetljen identitet i s njim povezano svjedočansko poslanje čovjeka, Crkve i društva usmjereni su prema izgradnji kulture života i njegova očuvanja. Čovjek je polazišna, središnja, ali i ishodišna točka evangelizacijskih i demokratizacijskih procesa. Shodno tome, imperativ današnjice je nastavak liječenja povijesnih rana, kako bi čovjek trećeg tisućljeća, nasuprot neoliberalnom kapitalizmu i konzumerizmu, mogao ostati na čvrstom temelju kršćanskih vrednota te dao svoj doprinos istinskoj demokratizacija društva.
EVALUASI KESEHATAN LAHAN PADA KAWASAN HUTAN PRODUKSI TERBATAS, BEKAS TEBANGAN DAN HUTAN TANAMAN INDUSTRI
Authors: Meldayanoor Meldayanoor
Published: September 2019

Pemanfaatan sumberdaya alam seiring dengan makin meningkatnya kebutuhan manusia akan keperluan untuk memenuhi kebutuhan hidup sehingga dalam pemanfaatannya harus benar-benar disesuaikan dengan ketersediaannya serta mempertimbangkan secara arif dan bijaksana dampak-dampak yang dapat mengakibatkan kerusakan lingkungan.Akibat dari kegiatan pengrusakan lingkungan termasuk hutan yang tidak terkendali menyebabkan hutan semakin gundul sehingga fungsi hutan untuk mengatur kondisi tata air di dalam tanah menjadi berkurang, kondisi lahan dan kesuburan tanah semakin menurun serta terjadi erosi. Kerusakan fungsi hutan seperti kegiatan pembukaan areal hutan dapat menyebabkan kondisi kesehatan lahan semakin menurun secara fungsi produksi, fungsi hidrologis dan fungsi ekologis.Penelitian ini menggunakan metode survei lapangan dan analisa laboratorium dengan pengambilan sampel tanah, air, flora dan fauna pada tiga kawasan yang berbeda untuk mendapatkan nilai indeks fungsi kesehatan lahan yang diperoleh dari nilai indeks fungsi produksi, indeks fungsi hidrologis dan indeks fungsi ekologis. Metode ini diharapkan lebih dapat memberikan kajian yang komprehensif sehingga dapat mengetahui kesehatan lahan secara keseluruhan.Hasil penelitian ini menyatakan bahwa tingkat kesehatan lahan pada kawasan hutan produksi terbatas tergolong sehat dengan nilai indeks fungsi kesehatan lahan 0.74, kawasan hutan tanaman industri tergolong cukup sehat dengan nilai indeks fungsi kesehatan lahan 0.40 dan kawasan bekas tebangan yang ditumbuhi alang-alang kesehatan lahannya tergolong kurang sehat dengan nilai indeks fungsi kesehatan lahan 0.32.Penilaian kesehatan lahan menggunakan kajian terhadap fungsi lahan secara produksi yang diperoleh dengan menilai kesesuaian lahan dan IBE, secara hidrologis dengan menilai koefisien runoff, fluktuasi tinggi muka air sungai serta sedimentasi tersuspensi dan secara ekologis dengan menilai keanekaragaman jenis flora dan fauna yang dapat hidup, tumbuh dan berkembang pada masing-masing kawasan.
ANALISIS SISTEM PRODUKSI GULA SEMUT FORTIFIKASI VITAMIN A DENGAN TIGA TINGKATAN KUALITAS GRADE
Authors: Hairiyah Nina , Djatna Taufik
Published: September 2019

Sistem produksi gula semut fortifikasi vitamin A dengan tiga tingkatan kualitas grade adalah sebuah sistem yang menjelaskan tentang proses produksi gula semut dengan bahan baku utama yaitu air nira dengan fortifikasi (pengkayaan kandungan) ekstrak vitamin A dan menghasilkan klasifikasi produk menjadi tiga tingkatan kualitas grade. Penulisan paper ini bertujuan untuk melakukan analisis dan klasifikasi tiga tingkatan kualitas grade pada produk akhir yang dihasilkan berdasarkan kandungan dan mengidentifikasi setiap tahapan proses produksi gula semut untuk mendapatkan keuntungan optimal. Hasil Correctly Classified Instances untuk pengklasifikasin grade A, B dan C menggunakan naïve bayes adalah sebesar 85% yang artinya meode ini layak untuk digunakan dalam aplikasi pengklasifikasian grade pada industri gula semut fortifikasi vitamin A.
OPTIMASI PROSES PIROLISIS ASAP CAIR DARI TEMPURUNG KELAPA DAN APLIKASINYA SEBAGAI KOAGULAN LATEKS
Authors: Jaya Jaka Darma , Nuryati Nuryati , Badri Badri
Published: September 2019

Salah satu pemanfaatan tempurung kelapa supaya bernilai ekonomis yang tinggi adalah dibuat asap cair dengan proses pirolisis. Asap cair merupakan suatu campuran larutan dan dispersi koloid dari uap asap kayu dalam air yang diperoleh dari hasil pirolisa kayu atau dibuat dari campuran senyawa murni. Penelitian ini bertujuan untuk mengoptimasi proses pirolisis asap cair dan mengaplikasikannya sebagai koagulan lateks. Optimasi proses pirolisis dilakukan dengan melakukan variasi suhu dan waktu pirolisis sebagai berikut: perlakuan A (suhu 150°C waktu 1 jam), perlakuan B (suhu 150°C waktu 2 jam), perlakuan C (suhu 175°C waktu 1 jam), perlakuan D (suhu 175°C waktu 2 jam), perlakuan E (suhu 200°C waktu 1 jam) dan perlakuan F (suhu 200°C waktu 2 jam). Berdasarkan hasil pirolisis ini diketahui bahwa perlakuan dengan suhu 175oC dan waktu 2 jam menghasilkan rendemen tertinggi (27,34%) dibandingkan dengan perlakuan lainnya. Pada tahapan aplikasi asap cair sebagai koagulan latek diperoleh data kadar karet kering dengan menggunakan koagulan asap cair tempurung kelapa memberikan hasil yang bervariasi antara 39,69-41,24%. Asap cair yang diperoleh dari perlakuan suhu 175°C waktu 2 jam menunjukkan kadar karet kering tertinggi sebesar 41,24% dan asap cair yang diperoleh dari perlakuan suhu 150°C waktu 2 jam menunjukkan kadar karet kering terendah sebesar 39,69%. Kinerja koagulasi lateks oleh asap cair dari tempurung kelapa masih berada sedikit dibawah asap cair dari cangkang kelapa sawit dan asam formiat, asap cair dari tempurung kelapa. Akan tetapi data penelitian menunjukkan bahwa asap cair tempurung kelapa berpotensi besar untuk dikembangkan sebagai koagulan latek yang ramah lingkungan dan ekonomis, mengingat ketersediaannya yang melimpah di wilayah Kalimantan Selatan.
PEMBUATAN KITOSAN DARI KULIT UDANG PUTIH (Penaeus merguiensis) DAN APLIKASINYA SEBAGAI PENGAWET ALAMI UNTUK UDANG SEGAR
Authors: Isnawati Noor , Wahyuningsih Wahyuningsih , Adlhani Erfanur
Published: September 2019

Kitosan merupakan modifikasi senyawa kitin yang banyak terdapat dalam kulit luar hewan golongan Crustaceae seperti udang dan kepiting. Khasiat kitosan sebagai bahan antibakteri dan kemampuannya untuk mengimobilisasi bakteri menjadikan kitosan dapat digunakan sebagai pengawet makanan. Daya hambat kitosan terhadap bakteri tergantung dari konsentrasi pelarut kitosan. Tujuan penelitian ini adalah untuk menentukan lama waktu pengawetan udang segar dengan menggunakan larutan kitosan serta mengidentifikasi pengaruh kitosan terhadap sifat fisis udang segar baik dari segi bau maupun tekstur udang. Percobaan dibagi dalam 3 tahap. Tahap pertama Isolasi kitin dari kulit udang putih (Penaeus merguiensis) dengan dua perlakuan yaitu deproteinisasi dengan menggunakan NaOH 1 M dan demineralisasi dengan menggunakan CH3COOH 1 M dan HCl 1 M. Tahap kedua adalah proses deasetilasi kitin menjadi kitosan dengan menggunakan NaOH 1 M. Tahap ketiga adalah tahap aplikasi penambahan kitosan pada udang segar dengan variasi konsentrasi kitosan 0,5 g; 1 g; 1,5 g; dan 2 g dalam 1% CH3COOH dengan variabel waktu perendaman udang segar selama 15, 30, 45, dan 60 menit. Hasil penelitian menunjukkan bahwa udang segar yang direndam dalam larutan asam asetat encer 1% pada semua konsentrasi yang diuji memiliki daya simpan selama 2 hari, dengan teksturnya masih bagus dan bau masih berbau udang.
PENGARUH PENGGUNAAN PEWARNA ALAMI, WAKTU PENGUKUSAN DAN SUHU TERHADAP PEMBUATAN SNACK MIE KERING RAINBOW
Authors: Amalia Rizki , Auli Hamdan
Published: September 2019

Snack mie kering merupakan makanan ringan siap saji yang dikemas dan biasanya menggunakan bahan pewarna untuk menjaga konsistensi warna pada produk mie. Penggunaan pewarna sintetik dapat mengakibatkan efek samping yang menunjukkan sifat karsinogenik, sehingga penggunaan pewarna alami menjadi upaya untuk mencegah penggunaan pewarna sintetik yang berbahaya. Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan pewarna alami terhadap kualitas inderawi snack mie kering rainbow pada aspek warna dan mengetahui pengaruh variasi suhu dan waktu pengukusan terhadap tingkat kesukaan masyarakat pada snack mie kering rainbow. Tahapan pembuatan snack mie kering rainbow terdiri dari tahap pencampuran, pembentukan lembaran, pembentukan mie, pengukusan dan penggorengan. Hasil terbaik untuk kualitas organoleptik pewarna alami diperoleh pada perlakuan 30% dengan skor 8,1 untuk warna hijau (B30), skor 7,4 untuk warna jingga (T30) dan skor 3,6 untuk warna kuning (J30). Pengaruh suhu dan waktu pengukusan terbaik terhadap tingkat kesukaan panelis adalah suhu 800C selama 30 menit pada aspek tekstur, aroma dan rasa sedangkan pada aspek warna pengaruh suhu dan waktu pengukusan terbaik adalah suhu 800C selama 20 menit berdasarkan hasil uji tingkat kesukaan, uji ANOVA dan uji DMRT.Kata kunci : pewarna alami, snack mie kering rainbow
PROSES PEMBUATAN TEH HERBAL DAUN SUKUN DENGAN OPTIMASI PROSES PENGERINGAN DAN PENAMBAHAN BUBUK KAYU MANIS DAN CENGKEH
Authors: Zainuddinnur Muhammad , Meldayanoor Meldayanoor , Nuryati Nuryati
Published: September 2019

Teh herbal adalah sebutan untuk ramuan bunga, daun, biji, akar, atau buah kering yang biasanya digunakan sebagai minuman yang berhasiat obat. Salah satu jenis tanaman yang daunnya dapat dimanfaatkan dalam pembuatan teh herbal adalah sukun, hal ini tentunya dapat menjadi sebuah peluang dalam pembuatan sebuah produk yang dapat menunjang kesehatan. Tujuan dari optimasi ini adalah untuk mendapatkan produk teh daun sukun terbaik. Rancangan produk teh herbal daun sukun ini menggunakan 3 tahap, yaitu optimasi proses pengeringan, pengujian kualitas teh daun sukun terbaik yang dihasilkan dan tingkat penerimaan masyarakat terhadap optimasi penambahan bubuk kayu manis dan cengkeh dengan menggunakan parameter uji kualitatif senyawa fenol dan tannin, uji kadar air, uji kadar abu, dan uji organoleptik. Analisis data yang digunakan adalah uji F (ANOVA) yang dilanjjutkan dengan uji DMRT (Duncan Multiple Range Test). Hasil yang diperoleh menunjukan bahwa produk terbaik terdapat pada daun tua dengan pengeringan oven dan komposisi daun sukun 87%, bubuk kayu manis 8,7 %, dan bubuk cengkeh 4,3 %.Kata Kunci: teh, teh herbal, daun sukun
PENENTUAN FORMULASI DAN UMUR SIMPAN SOSIS BUAH DENGAN PENAMBAHAN TEPUNG TAPIOKA
Authors: Hairiyah Nina , Jubaidah Jubaidah
Published: September 2019

Sosis merupakan produk olahan daging yang dihaluskan dan dicampur dengan rempah-rempah. Sosis tidak dapat di konsumsi oleh seluruh lapisan masyarakat, karena ada sebagian orang yang tidak memakan daging (vegetarian), alergi ataupun tidak mampu membeli. Salah satu hal yang dapat dilakukan agar seluruh masyarakat dapat mengkonsumsi sosis adalah dengan mengganti bahan baku daging menjadi buah. Di Kabupaten Tanah Laut buah-buahan yang pemanfaatannya belum optimal antara lain adalah buah pisang, buah naga dan buah pepaya, sehingga pada penelitian ini akan dioleah sosis berbahan baku buah pisang, buah naga dan buah pepaya. Tujuan dari penelitian ini adalah untuk mendapatkan formulasi terbaik dari pembuatan produk sosis buah. Analisis yang dilakukan pada produk sosis buah yaitu uji organoleptik dan uji umur simpan dengan metode ESS. Hasil pengolahan data menunjukkan bahwa sosis buah dengan formulasi terbaik adalah produk sosis buah pisang, buah naga dan buah pepaya pada perlakuan C (T50% = 50 g tapioka : 50 g buah) dengan perolehan nilai kesukaan rata-rata tertinggi. Produk sosis buah dapat bertahan selama 15 hari dengan penyimpanan di dalam freezer.Kata kunci: Sosis, sosis buah, buah pisang, buah naga, buah pepaya, uji organoleptic, uji umur simpan
PENGARUH FORMULASI PENAMBAHAN TEPUNG SUKUN DALAM PEMBUATAN MIE KERING
Authors: Amalia Rizki , Finarifi Ak Qoyum
Published: September 2019

Program penganekaragaman pangan dari buah sukun dilakukan sebagai salah satu cara untuk memanfaatkan buah sukun yang berlimpah pada musim panen dan mengembangkan produk pangan. Salah satu upaya penganekaragaman sukun yaitu pembuatan tepung sukun sebagai formulasi penambahan dalam proses pembuatan mie kering. Tujuan dari penelitian ini adalah optimasi formulasi penambahan tepung sukun dalam pembuatan mie kering. Analisa terhadap mie kering dilakukan dengan uji organoleptik dan kadar air. Hasil uji organoleptik diolah menggunakan uji ANOVA yang dilanjutkan dengan uji DMRT. Hasil pengolahan data menunjukkan bahwa mie kering perlakuan terbaik adalah 100 g tepung sukun dan 900 g tepung terigu dengan suhu dan waktu pengukusan 80oC selama 30 menit dan rata-rata kadar air 28,2%.Kata Kunci : Sukun, Tepung Sukun, Mie Kering