bluuebunny/crossref_metadata_2025 huggingface dataset:
MANAJEMEN KURIKULUM BERBASIS KERANGKA KUALIFIKASI NASIONAL INDONESIA (KKNI) DI PERGURUAN TINGGI ISLAM
Authors: Lubis Adlan Fauzi
Published: September 2020

The purpose of this study was to analyze planning, implementation, and evaluation of curriculum development based on Indonesian National Qualification Framework (KKNI) in the Islamic Education Department at Muhammadiyah University, Jakarta. This research uses qualitative approach. Interviews were conducted directly with informants consisting of the Dean, Vice Dean, Head of Islamic Education Department. The results of observations and documentation were obtained from various studies of documents, manuscripts, and archives related to the KKNI-based curriculum management. Data analysis is based on data reduction, data display, and verification. The result of this study figures out that: a) The curriculum of the Islamic Education Department at UMY has been approved in accordance with the KKNI curriculum and each components of curriculum management consist of planning, implementing, and evaluating of the curriculum although there are deficiencies in each process; b) The development of curriculum management needs attention to Standard Operational Procedures and curriculum arrangements for the KKNI although its implementation is not entirely based on the KKNI.
Donald Trump and the Parties: Impeachment, Pandemic, Protest, and Electoral Politics in 2020
Authors: Jacobson Gary
Published: September 2020

During every administration from Harry Truman’s to Barak Obama’s the public’s judgment of the president’s character, commitments, and performance have shaped affect toward the president’s party and its other leaders, beliefs about where it stands on issues, assessments of its competence in managing domestic and foreign affairs, its drawing power on election day, and its appeal as an object of personal identification in both the short and long runs. Despite his bizarre and unorthodox presidency, Donald Trump is having a stronger impact on attitudes toward the parties—and that partisan priors are having a stronger impact on opinions of him—than of any of his post-war predecessors. This paper reviews a selection of the evidence for this conclusion and considers Trump’s past and prospective influence on the electoral fates of down-ballot Republican candidates and the future strength and composition of the Republican and Democratic coalitions.
Commitment to Church of the Poor in Service at the Cinta Orang Miskin Foundation, Surabaya
Authors: Saetban Saefnat , Faot Agustinus
Published: September 2020

Research on the commitment of the poor at the Cinta Orang Miskin Foundation is motivated by the reality of academic and practical gaps. From an academic perspective, researchers have never found the commitment of the poor at the Cinta Orang Miskin Foundation, even though the number of poor people is committed for the church to thrive. Currently the number reaches 1,300 people. On a practical level, this research wants to explore the decisions of these poor people to find out their commitment to involvement in the Cinta Orang Miskin Foundation (COM), which is served by Pastor Gunawan Setiadarma in Surabaya, East Java, which has experienced significant growth from 23 congregations to 1,300 people. . The problem of poverty is a problem that is being faced by the nation (nations in the world in general. The Indonesian nation itself cannot be separated from the poverty problem. The economic crisis that occurs within the Indonesian nation has an impact on all aspects of people's lives. It can be seen from the existence of people who live in poverty, live in slum environments, and the number of children (street children who are scattered in cities (cities in Indonesia). During this economic crisis, the number of street children in Indonesia increased drastically.
Exegesis Integrative Review of Salvation Because The Love Of God Is The Basic of The Church As The Unity of The Body of Christ (Ephesians 2:11-22)
Authors: Andrian Tonny
Published: September 2020

The subject of the unity of the church has appeared several times during the period of church history as a major subject. Even in the 20th century, differences of opinion on the subject of unity led to divisions. This point cannot be ignored. That is why the researcher conducted an integrated exegessa study on the meaning of the Church as the unity of the body of Christ Ephesians 2: 11-22. Ephesians 2: 11-22 is not a separate passage, but integrative, with other passages in the book of Ephesians. (this would be integrative both with Ephesians 2: 1-10 and Ephesians 4: 1-6) The conjunction "therefore" in Ephesians 2.11, describes the preceding verses that speak of grace. The suffering of Jesus Christ and His sacrifice on the cross, and His shed blood, are manifestations of grace that saves sinners. A demonstration of grace, which is free gift. It is the grace that saves people from sin. Thus Ephesians 2: 11-22 must be seen as a context that comes from grace. The saving or salvation based on the grace of God, as a building body of Christ, which is a union, which was previously "distant", ie those who are without Christ, not belonging to the citizens of Israel, become one body of Christ as intended by God. Ephesians 2: 11-22 explains that the unification of the body of Christ is a reflection of the journey of a Christian individual who has been saved by the grace of Christ God, is united or united with other Christian individuals to move towards the unity of building the body of Christ, as the Temple of God. the church as the unified Body of Christ, is built on the teachings of the Apostles and Prophets. Thus, the church, which has a government, a doctrine that may not be the same as one another, but the church is a unity in the bonds of the Spirit of peace, one faith, one Baptism, one god, one GOD the FATHER of all God, as salt and The light of the world, brings transformation and restoration for the world, through the carrying out of the task of the grace of Christ, namely the preaching of the gospel of the kingdom of heaven, so that all knees will kneel and all tongues confess that Jesus Christ is Lord to the glory of the heavenly Father.
МЕСТО КОРЕННЫХ НАРОДОВ АРГЕНТИНЫ В ПРОЦЕССАХ ГОСУДАРСТВЕННОГО И НАЦИОНАЛЬНОГО СТРОИТЕЛЬСТВА
Authors: Scherbakova Anna D.
Published: September 2020

The article analyses the stages of consolidating the peripheral position of indigenous peoples among the State priorities of the Argentine Republic, aimed at consolidating the state and creating a national identity. It was shown that during the colonial period their integration and assimilation into socio-economic and political processes were limited both by the communities themselves and by the colonial authorities. Since Argentina’s independence, the territories of the traditional residence of autochthonous groups became the object of state policy and are consistently excluded from the national political agenda. A wide arsenal of means is used – from equipping military expeditions to launching ideological and propaganda campaigns in the country and beyond.
ИЛЬЯ САМУИЛОВИЧ ГУРВИЧ: УРОКИ УЧЕНОГО. ОТ ЭТНОГРАФИИ К СОВРЕМЕННОЙ ПРАКТИЧЕСКОЙ АНТРОПОЛОГИИ
Authors: Bell (Gurvich) Marya I.
Published: September 2020

In this article, the daughter of I.S. Gurvich discusses his legacy as a scientist, his contagious enthusiasm for ethnography, and his impact on her. She describes how his behavior, stories, and reminiscences sparked her initial interest in different cultures and reflects on how his research and work influenced her decision to become an anthropologist and researcher herself. She sees many parallels in her current work as a UX Researcher and corporate anthropologist with that of her father.
This article also offers a short history of anthropology's entry into corporate practice, mirroring her own journey from academia, and discusses the relevance of the experiences of Soviet and Russian ethnographers for the contemporary global community of anthropologists involved in developing technology products and innovations.
КОЛДОВСТВО (СИХР) У ТАТАР АСТРАХАНСКОЙ ОБЛАСТИ
Authors: Syzranov Andry V.
Published: September 2020

The article is devoted to the study of traditions of witchcraft (sihr) among the Tatars of the Astrakhan region. Based on ethnographic materials, it was concluded that witchcraft among the Tatars is mainly associated with harmful magic and spells. The study reveals a clear connection between ideas about witchcraft and beliefs in evil spirits. It was found that the traditions of witchcraft among the Lower Volga Tatars are parallel to similar phenomena among other ethnoterritorial groups of Tatars in Russia, in particular, the Middle Volga and Siberian Tatars. The materials on the ethnography of witchcraft among the Tatars of the Astrakhan region are being published for the first time.
COVID-19 В СИЦИЛИИ: ЭКЗИСТЕНЦИАЛЬНЫЕ «МЕДИЦИНА» И ПРАКТИКИ – ОБРАЩЕНИЕ К ТРАДИЦИИ
Authors: Fais-Leutskaya Oksana D.
Published: September 2020

Summary: This article analyzes the empirics of mental and behavioral models of Sicilians in existential conditions, namely in February – May 2020 during the coronavirus epidemic and quarantine measures in Italy. The study is based on the author’s field material. In the course of the paper, the author addresses such aspects of traditional culture as folk medicine, local cuisine and rituals. Analysis of the realities clearly demonstrates the devotion of a large part of Sicilian society to the ancient cultural strata that have a particular connotation: the ancient remedies, rational and magical, and prevention of diseases and demonic apparitions, as well as therapeutic practices aimed at healing various ailments, but mainly plague and dysentery, which repeatedly struck Sicily. The dietary changes of alimentary habits of the Sicilians, and appeal to certain "health" and cleansing rites have the same focus. The study of empirical material reveals the medieval roots of beliefs and recipes, which the Sicilians appeal to, the role of historical memory, which guarantees preservation of archaic culture, the predominantly folk nature of the cultural substrate addressed by representatives of local society, and the oral way of information transmission. The theory and concepts of anthropology of fear and anthropology of disasters allow to understand the mechanism of this behaviour and the reasons for the revitalization of such a specific culture in these existential for Sicilians conditions, and also to focus on other social issues (the assertion of the society’s identity and the problems of relationships with other communities).
A Multiobjective Large Neighborhood Search Metaheuristic for the Vehicle Routing Problem with Time Windows
Authors: Konstantakopoulos Grigorios D. , Gayialis Sotiris P. , Kechagias Evripidis P. , Papadopoulos Georgios A. , Tatsiopoulos Ilias P.
Published: September 2020

The Vehicle Routing Problem with Time Windows (VRPTW) is an NP-Hard optimization problem which has been intensively studied by researchers due to its applications in real-life cases in the distribution and logistics sector. In this problem, customers define a time slot, within which they must be served by vehicles of a standard capacity. The aim is to define cost-effective routes, minimizing both the number of vehicles and the total traveled distance. When we seek to minimize both attributes at the same time, the problem is considered as multiobjective. Although numerous exact, heuristic and metaheuristic algorithms have been developed to solve the various vehicle routing problems, including the VRPTW, only a few of them face these problems as multiobjective. In the present paper, a Multiobjective Large Neighborhood Search (MOLNS) algorithm is developed to solve the VRPTW. The algorithm is implemented using the Python programming language, and it is evaluated in Solomon’s 56 benchmark instances with 100 customers, as well as in Gehring and Homberger’s benchmark instances with 1000 customers. The results obtained from the algorithm are compared to the best-published, in order to validate the algorithm’s efficiency and performance. The algorithm is proven to be efficient both in the quality of results, as it offers three new optimal solutions in Solomon’s dataset and produces near optimal results in most instances, and in terms of computational time, as, even in cases with up to 1000 customers, good quality results are obtained in less than 15 min. Having the potential to effectively solve real life distribution problems, the present paper also discusses a practical real-life application of this algorithm.
Understanding Contrail Business Processes through Hierarchical Clustering: A Multi-Stage Framework
Authors: Tariq Zeeshan , Khan Naveed , Charles Darryl , McClean Sally , McChesney Ian , Taylor Paul
Published: September 2020

Real-world business processes are dynamic, with event logs that are generally unstructured and contain heterogeneous business classes. Process mining techniques derive useful knowledge from such logs but translating them into simplified and logical segments is crucial. Complexity is increased when dealing with business processes with a large number of events with no outcome labels. Techniques such as trace clustering and event clustering, tend to simplify the complex business logs but the resulting clusters are generally not understandable to the business users as the business aspects of the process are not considered while clustering the process log. In this paper, we provided a multi-stage hierarchical framework for business-logic driven clustering of highly variable process logs with extensively large number of events. Firstly, we introduced a term contrail processes for describing the characteristics of such complex real-world business processes and their logs presenting contrail-like models. Secondly, we proposed an algorithm Novel Hierarchical Clustering (NoHiC) to discover business-logic driven clusters from these contrail processes. For clustering, the raw event log is initially decomposed into high-level business classes, and later feature engineering is performed exclusively based on the business-context features, to support the discovery of meaningful business clusters. We used a hybrid approach which combines rule-based mining technique with a novel form of agglomerative hierarchical clustering for the experiments. A case-study of a CRM process of the UK’s renowned telecommunication firm is presented and the quality of the proposed framework is verified through several measures, such as cluster segregation, classification accuracy, and fitness of the log. We compared NoHiC technique with two trace clustering techniques using two real world process logs. The discovered clusters through NoHiC are found to have improved fitness as compared to the other techniques, and they also hold valuable information about the business context of the process log.
Nutritional and Phenolic Profile of Early and Late Harvested Amaranth Leaves Grown Under Cultivated Conditions
Authors: Manyelo Tlou Grace , Sebola Nthabiseng Amenda , Mabelebele Monnye
Published: September 2020

Amaranth leaves are edible vegetables with high nutritional value that depends on the harvest stage. This study evaluated the nutritional and chemical profile of amaranth leaves harvested at days 65 and 120. Samples were collected, air-dried, and milled to pass through a 1-mm sieve before analysis. Higher (p < 0.05) crude protein (CP) and gross energy (GE) were observed in early harvested leaves than late harvested leaves. In addition, late harvested leaves had higher (p < 0.05) calcium, magnesium, and sodium contents than early harvested leaves; early harvested leaves had higher (p < 0.05) threonine, lysine, and leucine contents than late harvested leaves. Furthermore, early harvested leaves showed higher (p < 0.05) rutin, hyperoside, tryptophan, quercetin, and kaempferol rutinoside contents than late harvested leaves. A strong positive correlation was observed between nutrition composition and phenolic compounds. It can be concluded that both early and late harvested amaranth leaves are a promising source of nutrients and phenolic compounds that can help in providing new opportunities for their use in the food and pharmaceutical industries.
Crocus sativus L. Cultivation in Alpine Environments: Stigmas and Tepals as Source of Bioactive Compounds
Authors: Caser Matteo , Demasi Sonia , Stelluti Stefania , Donno Dario , Scariot Valentina
Published: September 2020

Saffron is a well-known spice, produced for a long time, mainly in the Mediterranean area. In the last few years, saffron has been seen as an alternative crop for the diversification of agricultural production and a new source of income, due to its high price, including in Alpine areas. Apart from the spice, constituted by the stigmas, saffron production provides a high amount of fresh tepals, which have so far been considered agricultural waste. Recently, studies on the composition of saffron tepals have been revealing their potential as a rich source of bioactive compounds. In this study, we evaluated the productive traits and the quality of the spice of saffron cultivated in open fields in the north western Italian Alps, for 2 years. In addition, in order to valorize the crop residues, we evaluated the bioactive compound content in tepals by using maceration and ultrasound assisted extraction with different rates of water and methanol as solvents. Higher yields in spice were obtained in the second year of cultivation. However, in both years, the spice had a high quality (ISO 3632), and a very high total phenolic content and antioxidant activity. Thirteen bioactive compounds were identified, including flavonols, cinnamic acids, benzoic acids, catechins, and vitamin C, with few differences between sites and year of cultivation. In tepals, the extraction method and the solvent used influenced the evaluated parameters, i.e., total phenolics and total anthocyanins content, antioxidant activity, and the amount of the four phenolic compounds found (hyperoside, rutin, ellagic acid, and epicatechin). Overall, this study revealed that both saffron spice and its by-product, the fresh tepals, produced in the north western Italian Alps can be considered a source of bioactive compounds with nutraceutical properties, having an antioxidant capacity that is often similar or higher than those of some vegetables and fruits.
Nutritional Relationships in Bitter Pit-Affected Fruit and the Feasibility of Vis-NIR Models to Determine Calcium Concentration in ‘Fuji’ Apples
Authors: Bonomelli Claudia , Mogollón René , Tonetto de Freitas Sergio , Zoffoli Juan Pablo , Contreras Carolina
Published: September 2020

‘Fuji’ is among the most cultivated apples worldwide but affected by the disorder bitter pit (BP). Calcium deficiency plays an important role on fruit susceptibility to BP. The objectives of this study were to determine nutritional relationships in BP-affected fruit and to verify if Vis-NIR models can predict Ca concentration in ‘Fuji’ apples. Fruit was harvested during 2018 season from two different orchards with historical high BP incidence. Seven hundred and fifty apples were stored at 0 °C for 150 days plus 10 days at 20 °C for BP assessments. After storage, 20 fruit with BP symptoms (BP+) and 20 healthy fruit (BP−) were assessed individually for mineral concentration. Vis-NIR evaluation involved a spectra range from 285 to 1200 nm to predict Ca concentration from ‘Fuji’ powder enriched Ca solutions. In each orchard, healthy apples had significantly higher Ca concentration than apples with BP. The K/Ca and Mg/Ca ratios were significantly lower in healthy fruit compared with BP− affected fruit. The relationship B/Ca proved to be significant in BP fruit. Although Ca interaction with organic substances and/or cellular structures could influence NIR spectra in fresh fruit, our results showed that Vis-NIR models could not be used to direct prediction of fruit Ca concentration.
What’s in a Click? The Efficacy of Conditioned Reinforcement in Applied Animal Training: A Systematic Review and Meta-Analysis
Authors: Pfaller-Sadovsky Nicole , Hurtado-Parrado Camilo , Cardillo Daniela , Medina Lucia G. , Friedman Susan G.
Published: September 2020

A conditioned reinforcer is a stimulus that acquired its effectiveness to increase and maintain a target behavior on the basis of the individual’s history—e.g., pairings with other reinforcers. This systematic review synthesized findings on conditioned reinforcement in the applied animal training field. Thirty-four studies were included in the review and six studies were eligible for a meta-analysis on the effectiveness of behavioral interventions that implemented conditioned reinforcement (e.g., clicks, spoken word, or whistles paired with food). The majority of studies investigated conditioned reinforcement with dogs (47%, n = 16) and horses (30%, n = 10) implementing click–food pairings. All other species (cats, cattle, fish, goats, and monkeys) were equally distributed across types of conditioned (e.g., clicker or spoken word) and unconditioned reinforcers (e.g., food, water, or tactile). A meta-analysis on the effectiveness of conditioned reinforcement in behavioral interventions found a medium summary effect size (Tau-U 0.77; CI95% = [0.53, 0.89]), when comparing baseline, where no training was done, and treatment levels. Moderators of conditioned reinforcement effectiveness were species (e.g., horses) and research design (e.g., multiple-baseline designs). The small number of intervention-focused studies available limits the present findings and highlights the need for more systematic research into the effectiveness of conditioned reinforcement across species.
A Comparison of Colistin versus Colistin Plus Meropenem for the Treatment of Carbapenem-Resistant Acinetobacter baumannii in Critically Ill Patients: A Propensity Score-Matched Analysis
Authors: Katip Wasan , Uitrakul Suriyon , Oberdorfer Peninnah
Published: September 2020

Carbapenem-resistant Acinetobacter baumannii (CRAB), an important nosocomial pathogen, occurs particularly in the intensive care unit (ICU). Thus, the aim of this study was to compare the efficacy and safety of documented treatment with colistin monotherapy versus colistin plus meropenem in critically ill patients with CRAB infections at Chiang Mai University Hospital (CMUH). We conducted a retrospective cohort study of critically ill patients with CRAB infections in an ICU from 2015 to 2017, who received colistin monotherapy versus colistin plus meropenem. After propensity score matching, an adjusted odds ratio (aOR) of a 30-day mortality rate in patients who received colistin plus meropenem was 0.43 compared to those who received colistin monotherapy (95% CI, 0.23–0.82, p = 0.01). aORs of clinical response and microbiological response were also higher in patients who received colistin plus meropenem (1.81, 95% CI 1.01–3.26, p = 0.048 and 2.08, 95% CI 1.11–3.91, p = 0.023, respectively). There was no significant difference in nephrotoxicity (aOR, 0.76, 95% CI, 0.43–1.36, p = 0.363) between colistin monotherapy and colistin plus meropenem. In conclusion, the addition of meropenem to colistin caused a reduction in 30-day mortality, higher clinical and microbiological responses, and did not increase nephrotoxicity compared to colistin monotherapy. Furthermore, 30-day mortality was significantly related with age, receiving vasopressor, having malignancy, and the APACHE II score.
Are Fried Foods Unhealthy? The Dietary Peroxidized Fatty Acid, 13-HPODE, Induces Intestinal Inflammation In Vitro and In Vivo
Authors: Keewan Esra’a , Narasimhulu Chandrakala Aluganti , Rohr Michael , Hamid Simran , Parthasarathy Sampath
Published: September 2020

Inflammatory Bowel Disease (IBD) is a chronic inflammatory disorder characterized by progressive inflammation and the erosion of the gut mucosa. Although the exact cause of IBD is unknown, multiple factors contribute to its complex pathogenesis. Diet is one such factor and a strong correlation exists between the western-style, high fat diets (HFDs) and IBD incidence rates. In this study, we propose that the peroxidized fatty acid components of HFDs could contribute to inflammation of the gut. The inflammatory nature of peroxidized linoleic acid (13-HPODE), was confirmed in vitro by analyzing pro-inflammatory gene expression in Caco-2 cells via RT-PCR and ELISA. Additionally, peroxide induced apoptosis was tested by Annexin-V fluorescent staining, while permeability was tested by FITC-dextran flux and TEER. The 13-HPODE-induced inflammation of intestinal epithelium was evaluated in vivo by analyzing pro-inflammatory cytokines under acute and chronic conditions after feeding 13-HPODE to C57BL/6J mice. Our data show that 13-HPODE significantly induced pro-inflammatory gene expression of TNF-α and MCP-1 in vitro, most notably in differentiated Caco-2 cells. Further, acute and chronic 13-HPODE treatments of mice similarly induced pro-inflammatory cytokine expression in the epithelium of both the proximal and distal small intestines, resident immune cells in Peyer’s patches and peritoneal macrophages. The results of this study not only confirm the pro-inflammatory properties of peroxidized fats on the gut mucosa, but for the first time demonstrate their ability to differentially induce pro-inflammatory gene expression and influence permeability in the intestinal epithelium and mucosal cells. Collectively, our results suggest that the immunogenic properties of HFD’s in the gut may be partly caused by peroxide derivatives, providing potential insight into how these diets contribute to exacerbations of IBD.
Research on the Posture Control Method of Hexapod Robot for Rugged Terrain
Authors: Liu Yubin , Wang Chunbo , Zhang He , Zhao Jie
Published: September 2020

This paper proposes a hexapod robot posture control method for rugged terrain to solve the problem of difficulty in realizing the posture control of a foot robot in rough terrain. The walking gait and original position of a six-legged robot is planned, and the Layer Identification of Tracking (LIT) strategy is developed to enable the robot to distinguish mild rugged terrain and severe rugged terrains automatically. The virtual suspension dynamic model is established. In mild rugged terrain, the posture maintenance strategy is adopted to keep the stability of the torso. In severe rugged terrain, the posture adjustment strategy is adopted to ensure the leg workspace and make it more widely adapt to the changing terrain, and a gravity center position adjustment method based on foot force distribution is designed to use foot force as feedback to control the position and attitude. The experiment of posture control in rough terrain and climbing experiment in the ladder terrain shows that the hexapod robot has good posture maintenance and posture adjustment effects when traversing complex terrain through the posture maintenance strategy and the posture adjustment strategy. Combined with the terrain identification method based on LIT, the hexapod robot can successfully climb the ladder terrain through the identification of the changing ladder terrain, and the movement of the posture adjustment process is stable.
An Optimal Power Control Strategy for Grid-Following Inverters in a Synchronous Frame
Authors: Patarroyo-Montenegro Juan F. , Vasquez-Plaza Jesus D. , Andrade Fabio , Fan Lingling
Published: September 2020

This work proposes a power control strategy based on the linear quadratic regulator with optimal reference tracking (LQR-ORT) for a three-phase inverter-based generator (IBG) using an LCL filter. The use of an LQR-ORT controller increases robustness margins and reduces the quadratic value of the power error and control inputs during transient response. A model in a synchronous reference frame that integrates power sharing and voltage–current (V–I) dynamics is also proposed. This model allows for analyzing closed-loop eigenvalue location and robustness margins. The proposed controller was compared against a classical droop approach using proportional-resonant controllers for the inner loops. Mathematical analysis and hardware-in-the-loop (HIL) experiments under variations in the LCL filter components demonstrate fulfillment of robustness and performance bounds of the LQR-ORT controller. Experimental results demonstrate accuracy of the proposed model and the effectiveness of the LQR-ORT controller in improving transient response, robustness, and power decoupling.
Evaluation and Origin Discrimination of Two Monocultivar Extra Virgin Olive Oils, Cultivated in the Coastline Part of North-Western Greece
Authors: Skiada Vasiliki , Agriopoulou Sofia , Tsarouhas Panagiotis , Katsaris Panagiotis , Stamatelopoulou Eygenia , Varzakas Theodoros
Published: September 2020

Extra virgin olive oil (EVOO) quality and authenticity are important and challenging factors nowadays for the assurance of consumers’ protection, prevention of unfair competition, and disruption of the national economy by a false declaration of origin. Hence, the recognition of EVOO authenticity is of great interest in terms of commercial and quality aspects. The objective of this study was to evaluate and discriminate monovarietal extra virgin olive oils of the two dominant olive cultivars, Lianolia Kerkyras and Koroneiki, produced in the coastline part of Western Greece, based on their chemical characteristics, followed by statistical and chemometric analysis in order to profile for the first time the typical characteristics of Lianolia Kerkyras as well as to identify possible markers for authenticity purpose. A total of 104 olive oil samples were collected. Both cultivars had an overall high quality profile as far as their basic qualitative parameters (free fatty acid, peroxide value, and UV spectrometric indices) are concerned. A higher concentration in the mono-unsaturated oleic acid characterize olive oils of cv. Koroneiki compared to cv. Lianolia Kerkyras, while a clearly higher concentration in the poly-unsaturated linoleic acid was observed in olive oils of cv. Lianolia Kerkyras. In addition, olive oil samples of cv. Koroneiki showed a clear lower total sterols concentration with a percentage of 40.9% not surpassing the required EU Regulatory limit of 1000 mg/kg, an observation which strengthens previous published results of our research group and depicts an overall “intrinsic characteristic” of cv. Koroneiki. As far as the profile of the individual sterols is concerned, Lianolia Kerkyras samples exhibited higher mean value for the total sterol content as well as for β-sitosterol, the major phytosterol in olive oils, compared to the relative values of Koroneiki. Significant differences in the sterolic and fatty acid composition of the examined olive oil samples were shown by means of statistical analysis demonstrating a strong botanical effect and depicting that those compositional markers can be suggested as possible authenticity tools.
A Systematic Error Compensation Strategy Based on an Optimized Recurrent Neural Network for Collaborative Robot Dynamics
Authors: Zhang Gong , Xu Zheng , Hou Zhicheng , Yang Wenlin , Liang Jimin , Yang Gen , Wang Jian , Wang Huoming , Han Changsoo
Published: September 2020

Robot dynamics and its parameter identification are of great significance to the realization of optimal control and human–machine interaction. The objective of this research is to address the shortcomings of establishing and identifying the self-developed six-degree-of-freedom (6-DoF) collaborative robot dynamics, which leads to a large error in the predicted torque of the proposed robot. A long short-term memory (LSTM) in an optimized recurrent neural network (RNN) is proposed to compensate the dynamic model of the proposed 6-DoF collaborative robot based on the consideration of gravity, Coriolis force, inertial force, and friction force. The analysis and experimental findings provide promising results. The compensated collaborative robot dynamic model based on LSTM in an optimized RNN displays a good prediction on the actual torque, and the root-mean-square (RMS) error between predicted and actual torques are reduced by 61.8% to 78.9% compared to the traditional dynamic model. Results of the experimental applications demonstrate the validity of the proposed systematic error compensation strategy.
Phononic Coupled-Resonator Waveguide Micro-Cavities
Authors: Wang Ting-Ting , Bargiel Sylwester , Lardet-Vieudrin Franck , Wang Yan-Feng , Wang Yue-Sheng , Laude Vincent
Published: September 2020

Phononic coupled-resonator waveguide cavities are formed by a finite chain of defects in a complete bandgap phononic crystal slab. The sample is machined in a fused silica plate by femtosecond printing to form an array of cross-shape holes. The collective resonance of the phononic cavities, in the Megahertz frequency range, are excited by a piezoelectric vibrator and imaged by laser Doppler vibrometry. It is found that well-defined resonant cavity modes can be efficiently excited, even though the phononic cavities are distant by a few lattice spacings and are only weakly coupled through evanescent elastic waves. The results suggest the possibility of engineering the dynamical response of a set of coupled phononic cavities by an adequate layout of defects in a phononic crystal slab.
The Influence of Flow Rates on Pressure Fluctuation in the Pump Mode of Pump-Turbine with Splitter Blades
Authors: Huang Ping , Xiao Yajing , Zhang Jinfeng , Cai Haikun , Song Haiqin
Published: September 2020

This paper takes a pump-turbine as the research subject and, based on the Computational Fluid Dynamics (CFD) numerical method and combined with test data, investigates the pressure fluctuation characteristics in the pump mode and analyzes the pressure fluctuation characteristics at 0.75 Qd, 1.0 Qd and 1.25 Qd when the guide vane opening is 17.5°. The results showed that the protruding frequencies of pressure fluctuation in the bladeless region were mainly 5 fn, 10 fn and 20 fn, and the main frequencies in the runner area and near the outlet wall of the draft tube were 16 fn and 5 fn, respectively. At different heights for the guide vanes, the pressure fluctuation in the bladeless region had significant differences, and the pressure fluctuation near the bottom ring was the most intense. The amplitude of the rotor–stator interaction frequency continuously attenuates from the bladeless region to the outlet of the stay vanes, and the amplitude attenuation of each frequency is mainly concentrated in the area of the guide vanes. In this paper, the influence of different flow rates on the pressure fluctuation in the pump mode is analyzed, which provides a theoretical reference for the stability and further study of pump-turbines.
Online Track Vertex Reconstruction Method Based on an Artificial Neural Network for MPGD
Authors: Liu Hao , Zhang Yi
Published: September 2020

In this paper, an online vertex reconstruction algorithm based on an artificial neural network (ANN) was proposed for the micro-pattern gaseous detector (MPGD). A simulation based on Geant4 was performed to generate the training and testing samples for the two cascade neural networks. Compared with a center-of-mass reconstruction, the proposed method shows better precision and much higher efficiency. Furthermore, a scheme for implementing the proposed algorithm on a Field-Programmable Gate Array (FPGA) chip is also presented to demonstrate that the algorithm could be integrated in a modern data acquisition (DAQ) system for online imaging techniques.
Airfoil Aerodynamics in Proximity to Wavy Ground for a Wide Range of Angles of Attack
Authors: Hu Haode , Ma Dongli
Published: September 2020

Wing-in-ground craft often encounter waves when flying over the sea surface, and the ground effect is more complicated than that of flat ground. Therefore, the aerodynamic characteristics of the NACA 4412 airfoil in proximity to wavy ground for a wide range of angles of attack is studied by solving the Reynolds Averaged Navier–Stokes equations. The validation of the numerical method is carried out by comparing it with the experimental data. The results show that the aerodynamic coefficients will fluctuate periodically when the airfoil moves over wavy ground at a small ride height. Except for the angle of attack of 0°, the fluctuation trend of aerodynamic coefficients at other angles of attack is the same. The analysis of aerodynamic fluctuation amplitude found that the medium angle of attack should be selected as the design cruise angle of attack for wing-in-ground craft. The time-averaged aerodynamic coefficients in the case of wavy ground are almost the same as those of flat ground. Hence, wavy ground mainly causes a fluctuation in aerodynamic coefficients. Considering the difference between aerodynamic coefficients at the angle of attack of 0° and at other angles of attack, the flow field structure at an angle of attack of 0° and 4° is analyzed. The results reveal the aerodynamic characteristics of the airfoil moving over wavy ground, which gives a deeper understanding of the ground effect in the conditions of wavy surface/ground. This has a certain guiding significance for the design of wing-in-ground craft.
Variations in Sediment Grain Size from a Lake in the Tianshan Mountain of Central Asia: Implications for Paleoprecipitation Reconstruction
Authors: Ma Long , Abuduwaili Jilili , Liu Wen , He Zhenjie
Published: September 2020

The Tianshan Mountain is the largest mountain range in Central Asia, and the source area of many river systems. Changes in precipitation result in significant alterations to regional hydrological processes. Lake sediment from the Tian Shan representative of the last 90 years was chosen as the object of this research study. The grain-size data were used in conjunction with instrumental data to provide a method for determining changes in paleoprecipitation. The results showed the three-point moving average curve of the silty fraction content with a size of 16 to 32 μm to be significantly consistent with the curve of total precipitation from April to September since 1950. The total content of clay and fine-silty fraction (0–16 μm) was clearly consistent with the monthly precipitation in July. The total precipitation from April to September showed a significant downward trend from 1930 to 1975, and then an overall increasing trend beginning in 1975, which may have been influenced by the North Atlantic Oscillation. The change in precipitation reconstructed by the grain size of lake sediments was significantly different from the high-resolution gridded datasets (Climatic Research Unit Time-Series version 4.04) because of the lack of data from meteorological stations in China before 1950. The conclusions of this study are significant for evaluating the validity of climatic research unit (CRU) data in arid areas of Western China. In addition, the results of this study serve as a bridge between modern instrumental records and long time-scale paleoclimate research and provide important reference values for future reconstructions of long time-scale paleoclimate.
High Selectivity Slot-Coupled Bandpass Filter Using Discriminating Coupling and Source-Load Coupling
Authors: Cui Jie , Chang Haojie , Zhang Renli
Published: September 2020

A multilayer bandpass filter with high selectivity is proposed in this letter. Discriminating coupling formed by slot-coupled quarter-wavelength and half-wavelength resonators introduces a zero at 3f0 (f0 is the center frequency) and the second harmonic is also suppressed due to the quarter-wavelength resonators. Owing to multilayer structure, source-load coupling is introduced to improve selectivity. Then an extra coupled line path is added with the same amplitude as the discriminating coupling path while they are out of phase. Thus signal cancellation produces three extra transmission zeros, with the selectivity and suppression performance further improved. To validate the design, a prototype bandpass filter centered at 2.49 GHz with 3 dB fractional bandwidth of 8.1% is fabricated. Both simulated and measured results are in good agreement and show good performance of the proposed bandpass filter.
Regional Characteristics of Long-Term Variability of Summer Precipitation in the Poyang Lake Basin and Possible Links with Large-Scale Circulations
Authors: Zhu Hua , He Handan , Fan Hongxiang , Xu Ligang , Jiang Jiahu , Jiang Mingliang , Xu Yanxue
Published: September 2020

Understanding the spatiotemporal regime of summer precipitation at local scales plays a key role in regional prevention and mitigation of floods disasters and water resources management. Previous works focused on spatiotemporal characteristics of a region as a whole but left the influence of associated physical factors on sub-regions unexplored. Based on the precipitation data of 77 meteorological stations in the Poyang Lake basin (PYLB) from 1959 to 2013, we have investigated regional characteristics of summer precipitation in the PYLB by integrating the rotated empirical orthogonal function (REOF) analysis with hierarchical clustering algorithm (HCA). Then the long-term variability of summer precipitation in sub-regions of the PYLB and possible links with large-scale circulations was investigated using multiple trend analyses, wavelet analysis and correlation analysis. The results indicate that summer precipitation variations in the PYLB were of very striking regional characteristics. The PYLB was divided into three independent sub-regions based on two leading REOF modes and silhouette coefficient (SC). These sub-regions were located in northern PYLB (sub-region I), central PYLB (sub-region II), and southern PYLB (sub-region III). The summer precipitation in different sub-regions exhibited distinct variation trends and periodicities, which was associated with different factors. All sub-regions show no trends over the whole period 1959–2013, rather they show trends in different periods. Trends per decade in annual summer precipitation in sub-region I and sub-region II were consistent for all periods with different start and end years. The oscillations periods with 2–3 years were found in summer precipitation of all the three sub-regions. Summer precipitation in sub-region I was significantly positively correlated with the previous Indian Ocean Dipole (IOD) event, but negatively correlated with East Asian Summer Monsoon (EASM). While summer precipitation in sub-region II and sub-region III showed weak teleconnections with climate indices. All of the results of this study are conducive to further understand both the regional climate variations in the PYLB and response to circulation patterns variations.
Gaseous Elemental Mercury Concentrations along the Northern Gulf of Mexico Using Passive Air Sampling, with a Comparison to Active Sampling
Authors: Jeon Byunggwon , Cizdziel James V. , Brewer J. Stephen , Luke Winston T. , Cohen Mark D. , Ren Xinrong , Kelley Paul
Published: September 2020

Mercury is a toxic element that is dispersed globally through the atmosphere. Accurately measuring airborne mercury concentrations aids understanding of the pollutant’s sources, distribution, cycling, and trends. We deployed MerPAS® passive air samplers (PAS) for ~4 weeks during each season, from spring 2019 to winter 2020, to determine gaseous elemental mercury (GEM) levels at six locations along the northern Gulf of Mexico, where the pollutant is of particular concern due to high mercury wet deposition rates and high concentrations in local seafood. The objective was to (1) evaluate spatial and seasonal trends along the Mississippi and Alabama coast, and (2) compare active and passive sampling methods for GEM at Grand Bay National Estuarine Research Reserve, an Atmospheric Mercury Network site. We observed higher GEM levels (p < 0.05) in the winter (1.53 ± 0.03 ng m−3) compared to other seasons at all sites; with the general pattern being: winter > spring > summer ≈ fall. Average GEM levels (all deployment combined) were highest at Bay St. Louis (1.36 ± 0.05 ng m−3), the western-most site nearest the New Orleans metropolitan area, and lowest at Cedar Point (1.07 ± 0.09 ng m−3), a coastal marsh with extensive vegetation that can uptake GEM. The MerPAS units compared reasonably well with the established active monitoring system, but gave slightly lower concentrations, except in the winter when the two methods were statistically similar. Both the passive and active sampling methods showed the same seasonal trends and the difference between them for each season was <15%, acceptable for evaluating larger spatial and temporal trends. Overall, this work demonstrates that PASs can provide insight into GEM levels and the factors affecting them along coastal regions.
Differences in the Evolution of Pyrocumulonimbus and Volcanic Stratospheric Plumes as Observed by CATS and CALIOP Space-Based Lidars
Authors: Christian Kenneth , Yorks John , Das Sampa
Published: September 2020

Recent fire seasons have featured volcanic-sized injections of smoke aerosols into the stratosphere where they persist for many months. Unfortunately, the aging and transport of these aerosols are not well understood. Using space-based lidar, the vertical and spatial propagation of these aerosols can be tracked and inferences can be made as to their size and shape. In this study, space-based CATS and CALIOP lidar were used to track the evolution of the stratospheric aerosol plumes resulting from the 2019–2020 Australian bushfire and 2017 Pacific Northwest pyrocumulonimbus events and were compared to two volcanic events: Calbuco (2015) and Puyehue (2011). The pyrocumulonimbus and volcanic aerosol plumes evolved distinctly, with pyrocumulonimbus plumes rising upwards of 10 km after injection to altitudes of 30 km or more, compared to small to modest altitude increases in the volcanic plumes. We also show that layer-integrated depolarization ratios in these large pyrocumulonimbus plumes have a strong altitude dependence with more irregularly shaped particles in the higher altitude plumes, unlike the volcanic events studied.
Intercomparison Study of the Impact of Climate Change on Renewable Energy Indicators on the Mediterranean Islands
Authors: de la Vara Alba , Gutiérrez Claudia , González-Alemán Juan Jesús , Gaertner Miguel Ángel
Published: September 2020

The enhanced vulnerability of insular regions to climate change has been recently recognized by the European Union, which highlights the importance of undertaking adaptation and mitigation strategies according to the specific singularities of the islands. In general, islands are highly dependent on energy imports which, in turn, feature a marked seasonal demand. Efforts to reduce greenhouse gas emissions in these regions can therefore fulfill a twofold objective: (i) to increase the renewable energy share for global decarbonization and (ii) to reduce the external energy dependence for isolated (or interconnected) systems in which this can only be achieved with an increase of the renewable energy share. However, the increase in renewable technologies makes energy generation more dependent on future climate and its variability. The main aim of this study is to analyze future projections of wind and photovoltaic potential, as well as energy productivity droughts, on the main Euro-Mediterranean islands. Due to the limitations in land surface available in the islands for the installation of renewable energy capacity, the analysis is extended to offshore wind and photovoltaic energy, which may have an important role in the future increases of renewable energy share. To that end, we use climate variables from a series of simulations derived from Euro-CORDEX (Coordinated Downscaling Experiment) simulations for the RCP2.6 and RCP8.5 emission scenarios. A special effort is performed to normalize projected changes and the associated uncertainties. The obtained normalized changes make it easier the intercomparison between the results obtained in the different islands and constitute condensed and valuable information that aims to facilitate climate-related policy decision making for decarbonization and Blue Growth in the islands.