bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of tethered dual catalysts: synergy between photo- and transition metal catalysts for enhanced catalysis
Authors: Wang Danfeng , Malmberg Robert , Pernik Indrek , Prasad Shyamal K. K. , Roemer Max , Venkatesan Koushik , Schmidt Timothy W. , Keaveney Sinead T. , Messerle Barbara A.
Published: June 2020

A series of tethered dual catalysts were developed, with catalytic investigations demonstrating that tethering enhances photocatalysis and thermally activated Ir catalysis. In addition, sequential and switchable catalytic reactivity was achieved.
Ruthenium-catalyzed hydrogenation of CO2 as a route to methyl esters for use as biofuels or fine chemicals
Authors: Wang Zheng , Zhao Ziwei , Li Yong , Zhong Yanxia , Zhang Qiuyue , Liu Qingbin , Solan Gregory A. , Ma Yanping , Sun Wen-Hua
Published: June 2020

A novel robust diphosphine–ruthenium(ii) complex has been developed that can efficiently catalyze both the hydrogenation of CO2 to methanol and its in situ condensation with carboxylic acids to give methyl esters.
Leidenfrost phenomenon during quenching in aqueous solutions: effect of evaporation-induced concentration gradients
Authors: Kumar Vijay , Sinha Kumar Nishant Ranjan , Raj Rishi
Published: June 2020

We present a unified framework to elucidate the effect of evaporation-induced concentration gradient of various types of additives on the modification of the Leidenfrost temperature during quenching in aqueous solutions.
Correlation between tetragonality (c/a) and direct current (dc) bias characteristics of BaTiO3-based multi-layer ceramic capacitors (MLCC)
Authors: Yoon Seok-Hyun , Kim Mi-Yang , Kim Donghun
Published: June 2020

The influence of tetragonality (c/a) of the dielectrics of BaTiO3-based multi-layer ceramic capacitors (MLCC) on the direct current (dc) bias characteristics was investigated.
Insights into the unique carboxylation reactions in the metabolism of propylene and acetone
Authors: Mus Florence , Wu Hsin-Hua , Alleman Alexander B. , Shisler Krista A. , Zadvornyy Oleg A. , Bothner Brian , Dubois Jennifer L. , Peters John W.
Published: June 2020

Alkenes and ketones are two classes of ubiquitous, toxic organic compounds in natural environments produced in several biological and anthropogenic processes. In spite of their toxicity, these compounds are utilized as primary carbon and energy sources or are generated as intermediate metabolites in the metabolism of other compounds by many diverse bacteria. The aerobic metabolism of some of the smallest and most volatile of these compounds (propylene, acetone, isopropanol) involves novel carboxylation reactions resulting in a common product acetoacetate. Propylene is metabolized in a four-step pathway involving five enzymes where the penultimate step is a carboxylation reaction catalyzed by a unique disulfide oxidoreductase that couples reductive cleavage of a thioether linkage with carboxylation to produce acetoacetate. The carboxylation of isopropanol begins with conversion to acetone via an alcohol dehydrogenase. Acetone is converted to acetoacetate in a single step by an acetone carboxylase which couples the hydrolysis of MgATP to the activation of both acetone and bicarbonate, generating highly reactive intermediates that are condensed into acetoacetate at a Mn2+ containing the active site. Acetoacetate is then utilized in central metabolism where it is readily converted to acetyl-coenzyme A and subsequently converted into biomass or utilized in energy metabolism via the tricarboxylic acid cycle. This review summarizes recent structural and biochemical findings that have contributed significant insights into the mechanism of these two unique carboxylating enzymes.
Psychoacoustic and Demographic Factors for Speech Recognition of Older Adult Cochlear Implant Users
Authors: Luo Xin , Kolberg Courtney , Pulling Kathryn R. , Azuma Tamiko
Published: June 2020

Purpose

This study aimed to evaluate the effects of aging and cochlear implant (CI) on psychoacoustic and speech recognition abilities and to assess the relative contributions of psychoacoustic and demographic factors to speech recognition of older CI (OCI) users.

Method

Twelve OCI users, 12 older acoustic-hearing (OAH) listeners age-matched to OCI users, and 12 younger normal-hearing (YNH) listeners underwent tests of temporal amplitude modulation detection, temporal gap detection in noise, and spectral–temporal modulated ripple discrimination. Speech reception thresholds were measured for sentence recognition in multitalker, speech-babble noise.

Results

Statistical analyses showed that, for the small sample of OAH listeners, the degree of hearing loss did not significantly affect any outcome measure. Temporal resolution, spectral resolution, and speech recognition all significantly degraded with both age and the use of a CI (i.e., YNH better than OAH and OAH better than OCI performance). Although both were significantly correlated with OCI users' speech recognition, the duration of CI use no longer had a significant effect on speech recognition once the effect of spectral–temporal ripple discrimination performance was taken into account. For OAH listeners, the only significant predictor of speech recognition was temporal gap detection performance.

Conclusion

The preliminary results suggest that speech recognition of OCI users may improve with longer duration of CI use, mainly due to higher perceptual acuity to spectral–temporal modulated ripples in acoustic stimuli.
Rice Straw Composting by Cellulolytic Bacteria Isolate and Its Application on Rice in Acid Sulfate Soils
Authors: Lestari Yuli , Maftu’ah Eni , Annisa Wahida
Published: June 2020

High acidity in acid sulfate soils due to pyrite oxidation results in increased Al3+ and Fe2+ activity which inhibits the growth of rice plants. The application of organic matter (compost) is one of the technology to manage acid sulfate soil. This study aims to obtain cellulolytic bacterial isolates that are superior in composting and improving rice growth in acid sulfate soil. The experiment carries out in the laboratory and glasshouse of the Indonesian Swampland Agriculture Research Institute (ISARI), Banjarbaru, Indonesia on May-November 2017. The experimental to obtain cellulolytic bacteria and water content that can accelerate composting is arranged by factorial using a complete randomized design with three replication First factor were cellulolytic bacteria application (without application/control, BS 1.6, BS 1.9, BS 2.2 and BS 2.5), while the second factor was water content (50%, 100%, and 150%). The effect of compost application with cellulolytic bacterial to rice growth arranged by factorial completely randomized design with 3 replications. The first factor was cellulolytic bacteria application (without application/control, BS 1.6, BS 1.9, and BS 2.2), while the second factor was composting condition (muddy waterlogged and waterlogged 5 cm depth). The result showed that the ability of cellulolytic bacteria to reduce C/N straw was not different. Only differences in water content affect the reducing C/N ratio of straw. The average C/N ratio of straw compost made with 50%, 100%, and 150% water content is 35.59; 29.71, and 29.21. Application of compost made under muddy waterlogged and inoculated BS1.9 and BS2.2 can increase the number of tillers, while those inoculated BS1.6 and BS1.9 can increase the rice shoot dry weight of Inpara 2. The suggest that cellulolytic bacterial inoculation can improve the quality of compost so that the growth of rice is better.
Indigenous Knowledge Cultivation of Local Rice Varieties “Siam Mutiara” and “Siam Saba” at Tidal Swampland
Authors: Khairullah Izhar
Published: June 2020

Tidal swampland at present and in the future is very strategic as one of the national food barns considering sloping of productive land. In South Kalimantan, for example, tidal swamp paddy fields are available which is quite large, but the most are still planted with local varieties. More than 70% of rice cultivation in the tidal swampland is planted with various local varieties. The existence of local rice varieties is inseparable from its adaptability and acceptability factors. Among local varieties that are popular and widely planted by farmers are Siam Saba and Siam Mutiara varieties. Siam Saba and Siam Mutiara were released as local-improved varieties. Both of these varieties have their respective advantages, both from the distribution of plant adaptation and the potential benefits of yield. Siam Saba variety is widespread in tidal swampland of acid sulfate soil types and soils that are seawater intrusion in the dry season (near the coast) with A/B overflow type, while Siam Mutiara in acid sulfate tidal paddy fields with B / C overflow type. Some of the advantages of Siam Saba compared to other local varieties are high yield potential of 4.70 t / ha, a large number of tillers, small and slender grain shape, white rice color, and amylose content of 81.69%. Whereas improved of Siam Mutiara is high yield potential of 4.80 t / ha, the color of clean yellow grain, the color of clear and translucent rice such as pearl, and amylose content of 48.88%. Both varieties showed uniform in growth, flowering time, and ripening simultaneously, in mature panicles with almost no green grains, and a high percentage of unfertile grains. Local rice cultivation technology (Siam Saba and Siam Mutiara) indigenous knowledge here includes seedbed, transplanting, land preparation, fertilizing, pest disease control, harvest, and post-harvest processing or yields carried out by indigenous farmers. This indigenous cultivation technology until now in tidal swamp paddy fields of South Kalimantan is still widely practiced by farmers, especially for ownership of narrow or limited rice fields. There were advantages and disadvantages of each in the practice of indigenous cultivation technology.
Benefits of Biochar Compost (BIOCHOM) to Yield Rice Productivity on Tropical Swampland, South Kalimantan, Indonesia
Authors: Annisa Wahida , Setiawati Evy
Published: June 2020

Biochar improves soil quality physicochemical. Biochar is a soil amendment created through the burning of biomass, has a potential solution for wide-ranging environmental management problems. Biochar has been shown to have positive outcomes on soil function to sequester carbon to slow the effects of global climate change. The objective of this research was to study the impact of compost biochar in increasing rice yields in tropical swampland. The design used in this study was a randomized block design, including (1) biochom 1 (without harvest waste compost + without biochar rice husk), (2) Biochom 2 (harvest waste compost 5 t/ha), (3) biochom 3 (rice husk biochar 5 t/ha), (4) biochom 4 (a combination of harvest waste compost 2.5 t/ ha + rice husk biochar 2.5 t/ha). The results showed that application of biochom 4 (a combination of harvest waste compost 2.5 t/ha + rice husk biochar 2.5 t/ha) increased of rice yield reached 15.21% compared to biochom 2 treatment (compost harvest waste 5 t/ha) and reached 17.78% with biochom 3 treatment (rice husk biochar 5 t/ha), compost without biochar treatment.
The Influence of Tidal on Fe Distribution at Tidal Swamp Rice-Farming in Barito River Area, South Kalimantan, Indonesia
Authors: Mawardi  , Hendro Sunarminto Bambang , Heru Purwanto Benito , Sudira Putu , Gunawan Totok
Published: June 2020

Iron (Fe) poisoning can cause problems on growth, the formation of saplings, and the filling of grains. These problems lead to and plant death or decrease in productivity. The inhibition of growth and production is increasingly higher in susceptible varieties. The distribution of iron concentration varies in different regions and locations of swamp rice farming. Various adverse effects of iron poisoning on rice have been widely reported, but the spatial distribution of iron in tidal fields is still rare. Iron distribution in various soil profile depths has not been widely investigated and data availability to avoid Fe poisoning in tidal swamps has not been widely reported. Spatial distribution of Fe concentrations is needed as a reference for rice cultivation in tidal swamps. This study has been conducted in November 2015 until August 2017 using the survey method in the Barito River area, South Kalimantan, Indonesia. The use of thematic maps such as tidal height difference (Δ), tidal flood type, and thickness of mud map. The results showed that the spatial concentration of Fe is highest in the zone I which has the highest difference (Δ) of high tide maximum and low tide maximum. While on the soil profile, the highest of Fe concentration is in layer 1 and the lowest concentration is in layer 3. Based on the overflow type, the highest Fe concentration is typed A and type B especially close to the estuary. To prevent iron poisoning, rice seedlings should reach layer 2 (> 10 cm) and choose the safe zone that is zone II, III, or IV to produce optimal rice production.
The Correlation of Femur Length with The Body Length of Proboscis Monkey
Authors: Ariana  , Padeta Irma , Rachma Jadi Arvendi , Wijayanto Hery , Budipitojo Teguh , Raharjo Slamet , Rezeki Amalia , Budi Santoso Heri
Published: June 2020

The proboscis monkey is an endemic primate of Kalimantan Island, Indonesia. According to the International Union for Conservation of Nature (IUCN), proboscis monkey was classified as endangered species. Anatomical data of proboscis monkey has not been available yet. As endemic and endangered primate, morphology and morphometric data of proboscis monkey are important for forensic reference. The purpose of this study was to investigate the correlation between femur and body length of the proboscis monkey. The anatomical analysis used three proboscis monkey from the rehabilitation center, Sahabat Bekantan Indonesia (SBI), Banjarmasin, South Kalimantan. The femur and body length were measured by digital caliper in millimeter (mm). The result showed that there was a strong correlation between femur and body length of the proboscis monkey. The body length of proboscis monkey might be determined by femur length with linear regression y = 0.2682x + 347.85. In conclusion, there was a positive correlation between femur and body length of proboscis monkey in South Kalimantan.
Blood glucose level of white rats (Rattus norvegicus) after giving catfish biscuit (Pangasius hypothalmus)
Authors: Hidayaturrahmah  , Budi Santoso Heri , Aulia Rahmi Ridha , Kartikasari Dewi
Published: June 2020

Glucose is an important carbohydrate which is more absorbed into the bloodstream as glucose and other sugar is changed into glucose in the liver. Blood glucose level is closely related to diabetes mellitus. Diabetes mellitus is a disease that arises in a person which is indicated by the presence of blood glucose levels exceeding normal (hyperglycemia) due to the deficiency of the insulin hormone in the body. The design of this research was using RAL with 24 male rats that divided into 6 treatments which were normal with the giving of Na-CMC 0.5% 1mL/200 gram BB, negative with the giving of Na-CMC 0.5% 1mL/200 gram BB, positive with the giving of glibenclamide of 0.45 mg/kg BB and 3 other treatments by giving catfish biscuit (Formula A, Formula B, and formula C) with 4 replications. All treatments were injected with monohydrate alloxan at a dose of 150 mg/kg BW, except for the normal treatment. The results showed that the formulation of catfish biscuit can lower the blood glucose level of white rats. The composition of biscuit with formula C has the highest decreasing percentage which was 80.20% to the blood glucose level of white rats.
On universal partial words for word-patterns and set partitions
Authors: Chen Herman Z.Q. , Kitaev Sergey
Published: June 2020

Universal words are words containing exactly once each element from a given set of combinatorial structures admitting encoding by words. Universal partial words (u-p-words) contain, in addition to the letters from the alphabet in question, any number of occurrences of a special “joker” symbol. We initiate the study of u-p-words for word-patterns (essentially, surjective functions) and (2-)set partitions by proving a number of existence/non-existence results and thus extending the results in the literature on u-p-words and u-p-cycles for words and permutations. We apply methods of graph theory and combinatorics on words to obtain our results.
Genetic diversity of endangeredChondrostoma nasusin the River Rhine system: Conservation genetics considerations on stocking and reintroduction
Authors: Wetjen Maj , Hübner Dirk , Seehausen Ole , Schulz Ralf
Published: June 2020

Reintroduction, stocking and translocation of freshwater fish are of growing concern given their importance for biodiversity conservation and ecosystem functioning. For successful management and stocking programmes, it is essential to incorporate genetics-based approaches. The nase (Chondrostoma nasus) constituted one of the most common fish species in European rivers. Its highly specialised and migratory nature exposed the species to human pressures, and thus, promoted its decline. Current knowledge of the genetic structure ofC. nasusis considerably limited for Europe as a whole and for Germany specifically. To overcome this lack of information we present original data onC. nasusfrom different tributaries of the River Rhine. We analysed nine microsatellite markers and mtDNA Cytochromebsequences to assess the distribution of genetic diversity and structure of this species across the study area. With the exception of the Lake Constance/Alpine Rhine population,C. nasusexhibited high gene flow within the Rhine system, and therefore, limited geographical genetic differences between populations where migration is not prevented by human intervention. The present study provides new insights into the levels of genetic variability ofC. nasusin the Rhine system, providing useful information for guiding reintroduction and stocking programmes. Population genetic information will improve future preservation and management of this valuable freshwater fish species in Germany and beyond.
Status of fish biodiversity and fishing on Hau River, Mekong Delta, Vietnam
Authors: Ut Vu Ngoc , Van Hoa Au , Vinh Huynh Phuoc
Published: June 2020

Fish biodiversity on Hau (Bassac) river was investigated to assess the status of species composition and fishing by fishing gears during a year. Sampling was implemented monthly at the upper part (An Giang province), middle part (Can Tho City) and lower part (Soc Trang province) of Hau River using trawl net as main sampling gear. Additionally, fish composition was also recorded from four other most popular fishing gears including cast net, gill net, fixed net and hook operated in the study sites. Fish species composition was determined by fishing gears and their abundance (CPUE) was calculated only from the main sampling gear (trawl net). The results showed that a total of 176 fish species belonging to 16 orders and 49 families was recorded. Perciformes was the most abundant group with 51 species followed by Cypriniformes with 46 species. The number of fish species was decreasing from upper part to lower part. Trawl net was considered the most destructive gear as up to 145 fish species caught by this device, followed by gill net with 98 species, fixed net 75, cast net 57, and hooks 16 species. CPUE was very low ranging from  0.53 kg.ha−1 h−1 to 26.30 kg.ha−1 h−1. Higher CPUE was recorded at lower part in compared to upper part and middle part, and at dry season in compared to rainy season. Regulation on fishing gears, fishing ground and season should be taken into consideration to protect and conserve the resources.
Knowledge and perception of the French ANSM recommendations for acute odontogenic cellulitis in French private dental practices: a national survey
Authors: Noaillon Emeline , Hajage David , Moreau Nathan , Azogui-Levy Sylvie , Descroix Vianney , Goudot Patrick , Rochefort Juliette
Published: June 2020

Introduction: Caring for acute odontogenic cellulitis involves drainage, treatment of the tooth and the administration of antibiotic therapy (ANSM 2011). The emergence of bacterial resistance mechanisms has led to formulating actions to promote better use of antibiotics, but France stay one of the largest consumers in Europe. Objectives: Evaluate the impact of ANSM's recommendations on dental surgeons in France for treatment of this affection. Methods: We performed a national survey with 12365 practitioners who received the questionnaire by email. Results: On 690 responder practitioners, 13% followed the recommendations to the letter and 70.5% performed a clinical intervention on the day of emergency. Only 1/3 of cases involved the prescription of amoxicillin alone for first line treatment. Conclusion: Few data exist on the evaluation of the impact of recommendations regarding this subject, but it is generally accepted it they are seldom followed. The reasons expressed are many: disagreement between practitioners on the efficiency of recommendations, lack of time and organizational constraints.
Considerations for the study of individual differences in gaze control during expert visual anticipation: an exploratory study
Authors: Ramsey Harry , Button Chris , Davids Keith , Hacques Guillaume , Seifert Ludovic , Dicks Matt
Published: June 2020

Recent perspectives for the study of perceptual-motor expertise have highlighted the importance for considering variability in gaze behaviour. The present paper explores the prevalence of variability in gaze behaviour in an anticipation task through examining goalkeepers gaze behaviours when saving soccer penalty kicks, with a primary focus on offering new considerations for the study of variability in gaze behaviour. A subset of data from five goalkeepers in the previously published article of Dicks et al. (2010) (Attention, Perception, & Psychophysics, 72(3), 706–720) were reanalysed, with a focus on ten successful penalty saves for each goalkeeper. As the aim was to conduct exploratory analyses of individual differences in goalkeeping performance, data were not averaged across participants and instead intra- and inter-individual differences are described using descriptive statistics. The main observation was that variation in the goalkeepers’ gaze behaviours existed and were evident both between and within individuals, specifically with regards to quiet eye duration but also for percentage viewing time and visual search patterns. However, QE location appeared to represent the only invariant gaze measure with the location being on the ball for the majority of trials. The current exploratory analysis suggested that experienced goalkeepers did not converge on the same gaze patterns during successful anticipation performance. The implications of these findings are discussed in relation to extant gaze behaviour literature before considering implications for future research.
Tiefe Hirnstimulation bei Morbus Parkinson
Authors: Nikolov Petyo , Groiss Stefan Jun , Schnitzler Alfons
Published: June 2020

Die tiefe Hirnstimulation ist eine etablierte und evidenzbasierte
Therapieoption für die Behandlung des fortgeschrittenen Morbus
Parkinson. Es handelt sich um eine symptomatische Behandlung mit dem
primären Ziel, die Lebensqualität des Patienten zu
verbessern. Der operative Eingriff gilt als relativ komplikationsarm.
Die verschiedenen Muster der organisierenden Pneumonie
Authors: Schaefer-Prokop Cornelia , Eisenhuber Edith
Published: June 2020

Die organisierende Pneumonie ist eine unspezifische, reparative Reaktion der Lunge auf verschiedene Noxen. Trigger können u. a. Medikamente, ein Infekt, ein Inhalationstrauma oder eine Lungenreaktion bei systemischer inflammatorischer Erkrankung sein. Auch wenn die Bildmuster der OP sehr variabel sind, gibt es einige typische Bildzeichen, die für die Diagnose hilfreich sind.
Sulforaphane and Vitamin E Protect From Glucotoxic Neurodegeneration
and Lifespan Reduction In C. Elegans
Authors: Schlotterer Andrea , Masri Benan , Humpert M. , Krämer Bernhard Karl , Hammes Hans-Peter , Morcos Michael
Published: June 2020

Caenorhabditis elegans is an established model organism in
neurodegeneration and aging research. Oxidative stress and formation of advanced
glycation endproducts (AGEs), as they occur under hyperglycemic conditions in
diabetes mellitus, contribute to neuronal damage and lifespan reduction.
Sulforaphane (SFN) is an indirect antioxidant, alpha-tocopherol (vitamin E) is a
direct antioxidant that acts as a free radical scavenger. Aim of this study is
to investigate the protective effects of SFN and vitamin E against glucotoxic
damages to the neuronal system and lifespan in C. elegans. Culture
conditions that mimic clinical hyperglycemia increased the formation of reactive
oxygen species (ROS) (p<0.001) and the accumulation of
methylglyoxal-derived advanced glycation endproducts (MG-derived AGEs)
(p<0.01) with subsequent neuronal damage and neuronal
dysfunction, ultimately leading to a significant shortening of lifespan
(p<0.01). Treatment with both, 20 µmol/l SFN
and 200 µg/ml vitamin E, completely prevented the increase in
ROS and MG-derived AGEs, abolished the glucotoxic effects on neuronal structure
and function, and preserved lifespan, resulting in a life expectancy similar to
untreated controls. These data emphasize the relevance of indirect and direct
antioxidants as potential therapeutic options for the prevention of glucotoxic
pathologies.
Modern quantum chemistry with [Open]Molcas
Authors: Aquilante Francesco , Autschbach Jochen , Baiardi Alberto , Battaglia Stefano , Borin Veniamin A. , Chibotaru Liviu F. , Conti Irene , De Vico Luca , Delcey Mickaël , Fdez. Galván Ignacio , Ferré Nicolas , Freitag Leon , Garavelli Marco , Gong Xuejun , Knecht Stefan , Larsson Ernst D. , Lindh Roland , Lundberg Marcus , Malmqvist Per Åke , Nenov Artur , Norell Jesper , Odelius Michael , Olivucci Massimo , Pedersen Thomas B. , Pedraza-González Laura , Phung Quan M. , Pierloot Kristine , Reiher Markus , Schapiro Igor , Segarra-Martí Javier , Segatta Francesco , Seijo Luis , Sen Saumik , Sergentu Dumitru-Claudiu , Stein Christopher J. , Ungur Liviu , Vacher Morgane , Valentini Alessio , Veryazov Valera
Published: June 2020

MOLCAS/OpenMolcas is an ab initio electronic structure program providing a large set of computational methods from Hartree–Fock and density functional theory to various implementations of multiconfigurational theory. This article provides a comprehensive overview of the main features of the code, specifically reviewing the use of the code in previously reported chemical applications as well as more recent applications including the calculation of magnetic properties from optimized density matrix renormalization group wave functions.
High performance top-emitting quantum dot light-emitting diodes with interfacial modification
Authors: Ding Shihao , Wang Weigao , Xiao Xiangtian , Qu Xiangwei , Wu Zhenghui , Xu Bing , Chen Shuming , Wang Kai , Sun Xiao Wei
Published: June 2020

In this paper, we report high performance top-emitting quantum dot light-emitting diodes (TE-QLEDs) with an interfacial modification layer. The specular metal bottom electrode was modified by an interfacial layer to improve the wettability of the aqueous solution on a metal electrode. By doing so, the potential barrier between the metal electrode and hole injection layer is decreased and the hole injection is enhanced. The capacitance analysis was used to understand the charge transfer process of the TE-QLEDs. The result showed that the indium tin oxide (ITO) interface layer is the best among NiOx, MoO3, and ITO. As a consequence, the red TE-QLEDs with an ITO interfacial modification layer show a maximum luminance and maximum external quantum efficiency of 18 880 cd/m2 and 11.8%, respectively. Our works indicate that the interfacial modification with metal oxides is an effective approach for high performance TE-QLEDs.
The magnetic Scott correction for relativistic matter at criticality
Authors: Bley Gonzalo A. , Fournais Søren
Published: June 2020

We provide a proof of the first correction to the leading asymptotics of the minimal energy of pseudo-relativistic molecules in the presence of magnetic fields, the so-called “relativistic Scott correction,” when max Zkα ≤ 2/π, where Zk is the charge of the kth nucleus and α is the fine structure constant. Our theorem extends a previous result by Erdős, Fournais, and Solovej to the critical constant 2/π in the relativistic Hardy inequality |p|−2π|x|≥0.
When travellers’ expectations are not met
Authors: Hernández-López María de la O
Published: June 2020

In recent years, travellers have increasingly opted for sharing economy businesses, such as Airbnb. In contrast to
other platforms for travellers, the Airbnb review system is characterised by its positivity bias, which implies that most of the
users post enthusiastically positive reviews. Posting a negative review is the exception, which makes it a highly sensitive task
in relational terms.

In light of the above, this study aims to examine 60 reviews with negative valence in order to understand: first,
which aspects of the experience make airbnbers feel dissatisfied; second, the extent to which relational concerns
and authenticity make an impact on both dissatisfaction and rapport orientation; and third, how rapport concerns (i.e., face and
rights and obligations) are managed in reviews with negative valence. The results show that a large number of users tried to
repair rapport, while others neglected or challenged rapport. The difference in tone and intention was motivated by the
presence/absence of the relational component (i.e., association rights), which had an impact on the varying importance given to
other faults. The present study intends to bring to the fore the importance of rapport management when posting sensitive
information in an online system in which the management of communicative skills lies at its core.
On modeling the static shape control of an adaptive air foil bearing
Authors: Sadri Hossein , Kyriazis Alexander , Schlums Henning , Sinapius Michael
Published: June 2020

Aerodynamic foil bearings are used in various industrial applications, e.g. in cooling turbines, small gas turbines or exhaust gas turbochargers, to support light, high-speed rotors under extreme operating conditions. Air (or another gas) is used as a lubricant in these bearings. In addition, the possible thermal deformations and production errors can be compensated by a flexible foil structure between the lubricant film and the bearing housing in air foil bearings. Since many static and dynamic properties of the lubricant are strongly dependent on the inner contour of the bearing, the idea of an adaptive air foil bearing (AAFB) is developed to optimize the performance of the bearing at different operating points. This paper focuses on a semi-analytical approach based on plate theory and the Ritz method for approximating the static shape control of a piezoelectrically actuatable AAFB. The main objective of this study is to consider adaptive bearing shells in calculating the behavior of an AAFB, as they provide additional degrees of freedom to a passive air foil bearing without adaptivity. Before the final step is taken, the model presented in this analysis is used for the shape optimization of the adaptive frame of AAFB in order to achieve the most efficient shape adaption with regard to target shapes.
Classification of official letters using TF-IDF method
Authors: Artama M , Sukajaya I N , Indrawan G
Published: June 2020

This study developed an application for official letter management in Sukasada 1 Public High School. The development of the application aimed to contribute to government programs in improving public services, especially in correspondence. In the letter classification process, the researcher implemented the TF-IDF method whose working procedures included conversion, Optical Character Recognition (OCR), filtering, tokenizing, and classification. Conversion is to convert official mail to digital form (jpg). OCR is to get the text of the letter then carries out the official letter in the form of an image and then filtering and tokenizing are carried out. Classification is the process of grouping a letter into its category by calculating the cosine similarity value between the letter being tested and the letter in the system. To test the accuracy of the classification results, a confusion matrix is used. The results of the study are in the form of web-based and mobile-based applications. Operators and admins used the web application to manage official letters at SMAN 1 Sukasada. The mobile application served to facilitate the principal in accessing mail data from a smartphone. The system was able to group letters with 78% accuracy (good), precision 77% and recall 77%.
Designing database lecture model in informatics engineering study program
Authors: Supriana C E
Published: June 2020

Database lectures in the informatics engineering study program teach the life cycle of database system development, both in terms of concepts, utilization, administration to database application systems to be studied, practiced and understood by students. Database teaching in the informatics engineering department of a private university with very diverse student participants, the ability to master computer and information technology and skills requires teaching material, lecturing strategies, lecturer quality, and facilities must also be able to adjust toward challenges, concept development, and database technology. This database design research model used Hevner’s information systems research framework, starting with reference research, database lecture analysis, rigor and research relevance. This research covered the steps of constructing artifacts in the form of constructs, models, methods, instantiation, and evaluation of artifacts. The use of the framework intended to support business strategies and processes in study programs and ensure the relevance of research. The benefits of this research will produce a database lecture model that can be used as a reference and lecture development in the informatics engineering study program. Reference to produce graduates with understanding and skills in database design, the use of Database Management System (DBMS), the ability in administration and professional capability in the database field. This research will be relevant to the study program environment as well as scientific benefits in research and database teaching.
Forecasting system using single exponential smoothing with golden section optimization
Authors: Widitriani N P S , Parwita W G S , Meinarni N P S
Published: June 2020

Puri Wira Mahkota Ltd is a distributor company in the automotive parts industry. Puri Wira Mahkota has an obstacles in preparing weekly order on stock to the primary production unit. They predict total sales of product in the coming period just by using an expectation from stock administration staff then it will be compared with sales data in the previous period without any calculations using a definitive formula. Forecasting calculation could support Puri Wira Mahkota to predict the quantity of product. The purpose of this research is to apply the calculation process that can predict the quantity of product should be produced by the primary production unit every month and also to prevent over stock and out of stock. The method used in the forecasting calculation is Single Exponential Smoothing. To optimize Single Exponential Smoothing we used the Golden Section. The principle of the Golden Section is to reduce the alpha area boundary so it will produce an ideal forecast value with the minimum MAPE (Mean Absolute Percentage Error) level. This research shows the results that the Golden Section finds the optimal forecasting value with a level of MAPE (Mean Absolute Percentage Error) of 43.39%.
Development of mobile-based health center information system with feature-oriented software development (case study in North Kuta health center)
Authors: Wijaya H , Dantes G R , Candiasa M
Published: June 2020

Health center is a district/city official technical unit that responsible for handling health development. At North Kuta Health Center, the medical record has been managed using a web-based application information system. Most of the patients access this system via smartphone. However, the system interface is not optimal if accessed via smartphone, such as the buttons on the system are covered by other interface elements and image sizes exceed the smartphone screen. For this reason, a mobile-based information system was developed from the existing health center system. When developing the system, a Feature-Oriented Software Development (FOSD) method was applied. The FOSD method applied the stages of domain analysis, domain design and specifications, domain implementation, product configuration, and generation. The domain analysis stage produced a needs analysis. At the domain design and specification stage, requirements analysis was processed into system design. The system design was created into a system prototype at the domain implementation stage. At the product configuration and generation stages, the system prototype was tested with User Acceptance Test (UAT) and running time. Running time testing shows the average time needed by the prototype system to complete each process was 432 ms. The UAT test shows that the prototype system was running well under the health service business process at the North Kuta Health Center. The system prototype has also provided convenience in the operation of health services in the North Kuta Health Center.
Art sticker application based of augmented reality to introduce crown (gelungan) of puppet ramayana in Bali
Authors: Permana A A J , Marti N W , Seputra K A , Febriana K A
Published: June 2020

Puppet on the island of Bali is a cultural heritage that is very important to maintain and introduce to the younger generation. Puppet in Bali now requires innovation to be accepted by the people so it is not boring. With the development of smart phones, young people are increasingly lazy to watch puppets. They need to be introduced puppets in different ways, one of which is based on Art Sticker. With this application the user can choose the desired puppet character and take a photo directly using the crown (Gelunganin Balinese), special attributes of the character e.g. moustache and feather, and the Necklace (Badongin Balinese). The application developed is based on Art Sticker (AS), which is a modification of Augmented Reality (AR). The method used to develop this application is Waterfall. The results of this study are the application of AR with face tracking where the face becomes a marker. How to use is taking a selfie so that an Art Sticker in the form of a 3D puppet shape appears on your face. Application testing is done by installing on several different Smart phone Models and can run well on several models that have been tested.
Developing jobsheet for basic programming based on performance assessment
Authors: Putrama I M , Kesiman M W A , Sugihartini N , Damayanthi L P E
Published: June 2020

This study aimed at producing job sheets for basic programming based on performance assessment. The development model used was the ADDIE model which consists of 5 stages: Analysis, Design, Development, Implementation, and Evaluation. The evaluation stage does not stand alone, in which at every stage in the ADDIE model, an evaluation process was conducted. The evaluation stage done here was only a formative evaluation, that is, related to the review process involving experts and a try-out in which the students’ responses to the job sheets were elicited to find out the effectiveness of the job sheets. The data were collected using questionnaire. The data collected were reduced and presented. Then the data were analyzed and a conclusion was drawn from the result of the analysis. The result of this study showed that the job sheet for basic programming based on performance assessment has been successfully developed and the attainment level of the job sheet was 80% (a good qualification). This means that it is feasible to be used effectively as media to support the teaching and learning process, especially in practicum activities in basic programming course. The students’ response related to the presence of the job sheets was also very good. They were very enthusiastic in following every instruction contained in the job sheets. In other words, there was no deviated reaction/ response at the time of the job sheets review process.
Students’ vlog: speaking application
Authors: Authar N , Muflihah T
Published: June 2020

Speaking skill is one of the important things in language teaching where the students are expected to communicate orally in their daily lives. However, making the students concretely involved in speaking activities becomes the hardest part for the teachers. This has been identified by Brown and Yule (1983:25) that the most difficult aspects of language learning for the teacher is making the students to use the language orally in their daily communication. Through Vlog (video-based learning) found as a media, which explored students creativity and enhanced their speaking skill, this study observed 30 students speaking achievement in and after making the vlog. Qualitative research was employed to analyse data, which concerned with the students speaking skill. The result of the study affirmed that vlog was proven greatly facilitated students speaking skill. It was also found that the students were not only had good progress in speaking but they also gained another discipline of knowledge; IT and the most impression was they had amazing learning experiences.
Analysis on vocational high school teacher competency gaps: implication for VHS teacher training needs
Authors: Wahyuni D S , Agustini K , Sindu I G P , Sugihartini N
Published: June 2020

This study proposed a novel approach that integrates qualitative and quantitative methods to identify the competency gaps of VHS teachers in Vocational High Schools (VHSs). It comprised four research steps, namely (1) determining the ideal teacher competencies through Fuzzy Delphi technique, (2) arranging the competency priorities by using the analytic hierarchy process, (3) conducting VHS teacher performance evaluation by using a 360-degree rater, and (4) the competency gaps analysis using the IPA matrix. The sample members involved in this study were 7 experts from the industry, academia, and government, and 50 VHS teachers from several regencies in Bali Province, Indonesia. This study suggested that the gaps analysis between the existing VHS teacher competencies and the ideal ones include (1) the pedagogical competency – the low level of factual knowledge mastery in vocational knowledge and skills; (2) mastery in the application of contents; (3) mastery of content knowledge related to vocational teaching subjects; (4) networking and collaboration between the relevant industry and government; (5) continuous professional development; and (6) entrepreneurship. These findings imply that these needs of competencies should be the focus of teacher training programs for VHS teachers.
Next generation of avionics learning based on virtual instruments in vocational education
Authors: Hendrarini N , Ema
Published: June 2020

At this time aerospace technology is very advanced. This is very closely related to advances in information technology and aerospace, so the learning process in aerospace vocational education also progresses. The learning process that was originally very manual now has used a computer as a support system. Learning methods or content of learning materials are also adjusted. One of them is the next generation of avionics. At this time, many types of aircraft have used electronic flight bags to control the aircraft. This technology is very advanced, using many automatic electronic devices such as sensors, actuators and other sophisticated devices that are connected by wireless networks and applications on computers. Studying the current generation of avionic systems is not easy, it is very complicated and sophisticated. This is a problem whose solution that must be sought to provide approach to learning. Studying theoretically and classically in Avionics will be very difficult and boring. A learning method that approaches the real conditions facilitates the process of understanding, namely utilizing virtual instruments. A teaching technique that is supported by applications on computers that resemble conditions in an aircraft. In this paper, a sub-section of avionics is assisted with computer applications, so the actions taken will have an effect on what the conditions of the aircraft are. The perceived benefit is that learning material is easier to understand and implement. This study will present learning methods using virtual instruments. The general design of virtual instruments related to avionics was proposed in this study in order to facilitate teaching avionics to students.
Linkage of national health and social care data: a cross-sectional study of multimorbidity and social care use in people aged over 65 years in Scotland
Authors: Henderson David A G , Atherton Iain , McCowan Colin , Mercer Stewart W , Bailey Nick
Published: June 2020

Background

little is known about the relationship between multimorbidity and social care use (also known as long-term care). The aim of this study was to assess the relationship between receipt of formal social care services and multimorbidity.

Methods

this retrospective data linkage, observational study included all individuals over the age of 65 in the population of Scotland in financial years 2014–15 and 2015–16 (n = 975,265). The main outcome was receipt of social care measured by presence in the Scottish Social Care Survey. Logistic regression models were used to assess the influence of multimorbidity, age, sex and socioeconomic position on the outcome reporting average marginal effects (AME).

Findings

93.3% of those receiving social care had multimorbidity, 16.2% of those with multimorbidity received social care compared with 3.7% of those without. The strongest magnitudes of AME for receiving social care were seen for age and multimorbidity (respectively, 50 and 18% increased probability comparing oldest to youngest and most severe multimorbidity to none). A 5.5% increased probability of receiving social care was observed for the most-deprived compared with the least-deprived.

Interpretation

higher levels of social care receipt are observed in those with increasing age, severe multimorbidity and living in more deprived areas. Multimorbidity does not fully moderate the relationship between social care receipt and either age or deprivation.
Interlinking moss functional traits. A commentary on: ‘Mechanisms behind species-specific water economy responses to water level drawdown in peat mosses’
Authors: Hájek Tomáš
Published: June 2020

This article comments on:

Fia Bengtsson, Gustaf Granath, Nils Cronberg and Håkan Rydin, Mechanisms behind species-specific water economy responses to water level drawdown in peat mosses, Annals of Botany, Volume 126, Issue 2, 01 August 2020, Pages 219–230, https://doi.org/10.1093/aob/mcaa033.
Making neurogenetics a global endeavour
Authors: Morris Huw R
Published: June 2020

This scientific commentary refers to ‘The role of genetics in Parkinson’s disease: a large cohort study in Chinese mainland population’, by Zhao et al. (doi:10.1093/brain/awaa167).