bluuebunny/crossref_metadata_2025 huggingface dataset:
Prävention des Delirs auf der Intensivstation
Authors: Braune Stephan , Gurlit Simone
Published: November 2019

A delirium in patients in the intensive care unit (ICU) is a manifestation of a severe acute dysfunction of the brain. It has a high prevalence and is associated with a relevant increase in morbidity and mortality. A cholinergic deficit and dopaminergic overactivity are considered to be a cause of delirium. Polypharmacy, which is often present before admission to the ICU, especially in the elderly, plays a key role as a trigger. The knowledge and identification of risk factors for delirium is a precondition for the early and effective prevention of delirium. The aim is the pre-operative or pre-interventional optimization of modifiable risk factors. Early and effective prevention of delirium can improve clinical outcome, reduce mortality, and positively impact long-term functional outcome. Non-pharmacological measures are always the basis for the prevention of delirium: maintenance of the day-night rhythm, sleep promotion at night and stimulation during the day, involvement of relatives, the avoidance of dehydration and malnutrition, and others more. They are pharmacologically accompanied by an effective analgesia and a target and symptom-oriented sedation with well controllable, as little as possible delirogenic substances. Interdisciplinary and interprofessional cooperation is essential so that preventive concepts significantly reduce the risk of delirium, even in high-risk patients.
Nicht pharmakologische und pharmakologische Therapie des Delirs
Authors: Reith Sebastian
Published: November 2019

The therapeutic management of delirium is based on two major columns. The cornerstone of therapy is the non-pharmacological intervention using a multifactorial approach including early mobilization, reorientation, improvement of cerebral and cognitive activity and the consequent establishment of adequate wake-/sleep cycles. Evidence for specific pharmacotherapy in delirium is currently rare, for both delirium prophylaxis as well as for definitive therapy of clinically apparent delirium. However, in clinical routine several substances are commonly used for the management of delirium particularly in a symptom-oriented choice. Moreover, regarding delirium prophylaxis the choice of sedativum has an important clinical impact on the incidence of delirium.
Behandlungsangebote der Adoleszenzpsychiatrie – Ergebnisse einer deutschlandweiten Erhebung
Authors: Abzieher Pia , Lipp Michael , Staats Johannes Hauke , Banaschewski Tobias , Driessen Martin , Karow Anne
Published: November 2019

Ziel der Studie war es, deutschlandweit adoleszenzspezifische Behandlungsmodelle zu untersuchen, die Umsetzung transitionspsychiatrischer Versorgung darzustellen und relevante Problembereiche in der Versorgung für Heranwachsende mit psychischen Erkrankungen zu identifizieren.

Methodik Es erfolgte eine fragebogenbasierte Querschnittserhebung (N = 26) krankenhausbasierter adoleszenzpsychiatrischer Behandlungsmodelle. Anhand von 28 Items wurden Daten zur Versorgungsstruktur, Zielgruppe und Therapieangeboten sowie spezifische Anforderungen der Adoleszenzpsychiatrie untersucht und deskriptiv ausgewertet.

Ergebnisse Es zeigt sich eine Zunahme adoleszenzspezifischer krankenhausbasierter Angebote in Deutschland. Diese sind durch diagnoseübergreifende und adoleszenzspezifische Therapieansätze und multiprofessionelle Arbeit gekennzeichnet. Überwiegend besteht ein Behandlungsangebot erst ab Volljährigkeit. Eine Minderheit der Therapieangebote ist in fachübergreifenden Kooperationsmodellen organisiert. Es werden strukturelle Defizite hinsichtlich Akut- und Krisenbehandlungen, sektorenübergreifender Zusammenarbeit und systematischer Transition berichtet.

Schlussfolgerungen Es besteht deutschlandweit ein wachsendes Interesse an der Entwicklung adoleszenzpsychiatrischer Behandlungsangebote. Die enge fachübergreifende Zusammenarbeit von Kinder- und Jugendpsychiatrie und Erwachsenenpsychiatrie ist zur Überwindung von Schnittstellenproblemen mit dem Ziel einer gelungenen Transition notwendig, aber bisher nicht flächendeckend implementiert. Um die Weiterentwicklung von Kooperationsprojekten zu ermöglichen, sollten strukturelle Hürden verringert werden.
Dynamic magneto-mechanical properties of magneto-sensitive elastomers determined using a new experimental test involving forced longitudinal vibration
Authors: Gao Wei , Wang Xingzhe
Published: November 2019

A new experimental method involving forced longitudinal vibration is presented for experimentally determining the dynamic magnetomechanical properties of a magnetosensitive elastomer in a magnetic field. A cylindrical sample is attached to a vibration platform and placed in a longitudinal magnetic field generated by a solenoid electromagnet, and a resonant technique is used to obtain the dynamic magnetomechanical properties of the tested sample. The results indicate that the resonant frequency (i) increases with the intensity of the applied magnetic field and the content of the magnetic-particle filler in the matrix but (ii) decreases with the sample length. The dynamic properties of the storage and loss moduli depend significantly on the excitation frequency and the magnetic-particle content. The testing process shows that it is simple and easy to evaluate the dynamic properties using forced longitudinal vibration, with the additional advantage of it being a nondestructive technique. This method could be extended to characterize the coupled magnetomechanical behavior of magnetosensitive functional elastomers such as Terfenol-D/epoxy composites.
Heralded single-photon source fueled by light-emitting diode
Authors: Nishii Daiki , O-oka Yoshiki , Okawa Youhei , Fukatsu Susumu
Published: November 2019

An attempt is made to generate a stream of heralded single photons using spontaneous parametric downconversion (SPDC) in type-II β-barium borate (BBO) pumped by a fiber-coupled light-emitting diode (LED). The hallmark interlocked circles develop only after removing the fluorescence background without correlation with pump polarization during spatial mode mapping of SPDC photons that allows otherwise diffuse circles to be projected distinctly in the image plane as photons with an identical wave vector from across the output area of BBO are collectively focused. Time-gating reveals a clear signature of photon antibunching, which promises a heralded single photon source fueled by commercially available LEDs.
Electromechanical behavior of graphene foams
Authors: Reddy Siva Kumar , Ya'akobovitz Assaf
Published: November 2019

Graphene foam (GF)—a three-dimensional porous structure that comprises several graphene layers—has excellent physical properties and, consequently, exciting possible applications. In this work, we report the mechanical behavior of GFs that were grown using high-temperature chemical vapor deposition (CVD) and subjected to electrostatic tensile loads. We show that such loads reduce the mechanical stiffness of the GF (Young's modulus in the kilo-Pascal range) and release prestresses generated during growth. In addition, GF demonstrates electrostatic resonance. By characterizing the fundamental electromechanical behavior of GF, this Letter paves the way toward the development of novel GF-based devices, such as GF electrostatic resonant sensors, flexible capacitors, and micro- and nanoelectromechanical devices.
Absorption of cadmium accompanied by EDTA varies according to tomato cultivar
Authors: Zhao Shouping , Zhang Qi , Xiao Wendan , Chen De , Ye Xuezhu
Published: November 2019

Two tomato (Lycopersicum solanum) varieties, one high (YSL189) and one low (HZ903) cadmium (Cd) accumulator, were used in our experiment. We detected cadmium (Cd ion/Cd-EDTA) uptake rates in roots and the corresponding expression of the Cd transport genes IRT1, IRT2, ZIP, Nramp1, Nramp2 and Nramp3. Our data proved that both cultivars – YSL189 and HZ903 – showed higher Cd accumulation in plants and a higher Cd uptake rate in roots supplied with Cd ion than with Cd-EDTA. In roots of YSL189, the expression levels of IRT1, IRT2, ZIP, Nramp1, Nramp3 and Nramp2 (5, 10 and 20 µmolc L–1 Cd) treated with Cd ion were higher than those treated with Cd-EDTA, whereas in roots of HZ903, only two genes, IRT1 and Nramp1 (5, 10, 100 µmolc L–1 Cd), showed higher expression levels in plants treated with Cd ion than in those treated with Cd-EDTA. When the difference between the cultivars was considered, the Cd concentration in the plant and the Cd uptake rate in the roots of YSL189 were higher than those of YZ903 under the same Cd treatments (i.e. Cd ion or Cd-EDTA). The expression of IRT2 and ZIP in the roots of YSL189 was higher than that observed in HZ903 treated with all levels of ion-Cd. We attribute the higher Cd uptake rate and greater accumulation of ion-Cd compared with EDTA-Cd in YSL189 than those found in HZ903 partly to the genes that had higher expression levels. Our results indicate that the roles of transporters in the absorption of different forms of Cd vary according to plant genotype.
Soil and weather conditions associated with plant damage from post-emergent metribuzin in lentil (Lens culinaris) in southern Australia
Authors: McMurray Larn S. , Preston Christopher , Vandenberg Albert , Mao Dili , Paull Jeffrey G.
Published: November 2019

Multiple field experiments and a controlled-environment temperature study were conducted to investigate soil and weather conditions responsible for herbicide phytotoxicity in lentil (Lens culinaris Medik.) from post-emergent application of metribuzin. A linear relationship was observed between plant injury (% necrosis) and metribuzin rate in all 12 environments, but in only 11 environments for anthesis dry weight and nine environments for both plant density and grain yield. Grain-yield reduction from label metribuzin rates of 135 g a.i. ha–1 for sand and 285 g a.i. ha–1 for clay ranged from 0% to 32% and 0% to 67%, respectively, across all environments. Principal component analysis of soil and weather factors around the time of herbicide application suggested that metribuzin-induced plant damage in lentil was due to a combination of multiple soil and weather factors. However, heavy rainfall within 10 days of herbicide application, particularly on light-textured soils or where soil moisture was low, was most strongly linked to plant damage. Experiments targeting the impact of reductions in temperature post-metribuzin application showed no effect, and of light intensities pre- and post-metribuzin application showed low effects on plant-damage measures. Because rainfall in the 10 days after application is a major determinant of metribuzin damage in winter-grown lentil in southern Australia, a higher level of selective tolerance to metribuzin than that present in commercial cultivars is needed for its safe post-emergent use. Early and late measures of plant damage will be required to assess accurately plant tolerance to post-emergent metribuzin application in lentil.
Defense of Scots pine against sawfly eggs (
Diprion pini
) is primed by exposure to sawfly sex pheromones
Authors: Bittner Norbert , Hundacker Janik , Achotegui-Castells Ander , Anderbrant Olle , Hilker Monika
Published: November 2019

Plants respond to insect infestation with defenses targeting insect eggs on their leaves and the feeding insects. Upon perceiving cues indicating imminent herbivory, such as damage-induced leaf odors emitted by neighboring plants, they are able to prime their defenses against feeding insects. Yet it remains unknown whether plants can amplify their defenses against insect eggs by responding to cues indicating imminent egg deposition. Here, we tested the hypothesis that a plant strengthens its defenses against insect eggs by responding to insect sex pheromones. Our study shows that preexposure of
Pinus sylvestris
to pine sawfly sex pheromones reduces the survival rate of subsequently laid sawfly eggs. Exposure to pheromones does not significantly affect the pine needle water content, but results in increased needle hydrogen peroxide concentrations and increased expression of defense-related pine genes such as
SOD
(superoxide dismutase),
LOX
(lipoxygenase),
PAL
(phenylalanine ammonia lyase), and
PR-1
(pathogenesis related protein 1) after egg deposition. These results support our hypothesis that plant responses to sex pheromones emitted by an herbivorous insect can boost plant defensive responses to insect egg deposition, thus highlighting the ability of a plant to mobilize its defenses very early against an initial phase of insect attack, the egg deposition.
Anti-CD20 therapy depletes activated myelin-specific CD8+T cells in multiple sclerosis
Authors: Sabatino Joseph J. , Wilson Michael R. , Calabresi Peter A. , Hauser Stephen L. , Schneck Jonathan P. , Zamvil Scott S.
Published: November 2019

Significance

Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. CD8+T cells have been strongly implicated in MS pathogenesis, but it is unclear whether myelin is a CD8+T cell autoantigenic target in MS. This study demonstrated that while myelin-specific CD8+T cells are present at similar frequencies in untreated MS patients and healthy subjects, the proportion of memory and CD20-expressing myelin-specific CD8+T cells was increased in MS patients, suggesting prior antigen encounter. This activated phenotype was reversible as the memory and CD20-expressing populations of certain myelin-specific CD8+T cells were reduced following anti-CD20 treatment.
Effects of ALS-associated TANK binding kinase 1 mutations on protein–protein interactions and kinase activity
Authors: Ye Junqiang , Cheung Jonah , Gerbino Valeria , Ahlsén Göran , Zimanyi Christina , Hirsh David , Maniatis Tom
Published: November 2019

Significance

DNA sequence variants in the
Tbk1
gene associate with both sporadic and familial amyotrophic lateral sclerosis (ALS). We report a functional study of 25 missense TBK1 mutations scattered across all structural domains. These mutations negatively impact TBK1 functions ranging from kinase activity, substrate specificity, dimerization, and protein stability to interactions with critical autophagy receptors. Contrary to previous studies, we find that TBK1 dimerization increases protein stability and improves catalytic efficiency, but it is not required for its activation. Our results show that different TBK1 ALS mutations, which are associated with the same pathological outcome, affect distinct signaling pathways in which TBK1 is critically involved. TBK1-associated ALS provides a remarkable example of the genetic and functional complexity of ALS disease mechanisms.
Retranslating Thucydides as a scientific historian
Authors: Jones Henry
Published: November 2019

The nineteenth century was a period of dramatic change in Europe for the idea of history. While from antiquity
through to the eighteenth century, historiography had broadly been considered an artistic and rhetorical activity, this view
gradually lost ground in the nineteenth century to an understanding of history as a science. This case study aims to explore how
these shifts in attitudes towards the proper aims and methods of history writing might have shaped the interpretation and
translation into English of Thucydides’ History of the Peloponnesian War, a work first written in classical Greek
in the fifth century BCE. The analysis is carried out by means of a corpus-based methodology which, I argue, can better enable
researchers to engage with each (re)translator’s overall presentation of the source through the production and interrogation of
concordances listing every instance of a given search item as it occurs within digitised versions of the target texts. This is
demonstrated through an investigation of the use of the term ‘fact(s)’ which reveals a striking divergence in interpretation
between the six translations, with Crawley’s (1874) History in
particular appearing to lend a significantly more objective and empirical tone to Thucydides in English.
Analyzing writing performance of L1, L2, and Generation 1.5 community college students through Coh-Metrix
Authors: Abba Katherine A. , Joshi R. Malatesha , Ji Xuejun Ryan
Published: November 2019

Proficient writing in English is a challenge for the linguistically diverse community college population. Writing research at the community college level is warranted in order to guide instruction and assist students in achieving higher levels of proficient writing. The current study examined the writing of three community college groups: native English Language students (L1, n = 146), English as a Second Language students primarily educated abroad (L2, n = 31), and English as a Second Language students who graduated from high school and lived in the United States for more than four years (Generation 1.5, n = 72). The writing samples were analyzed using Coh-Metrix to examine group differences in lexical, syntactic, and cohesion characteristics. Results indicated significant differences in syntactic and lexical measures among all groups, with small to large effect sizes. The majority of differences related to proficient writing characteristics were found between L1 and Generation 1.5 groups.
CLASP2 binding to curved microtubule tips promotes flux and stabilizes kinetochore attachments
Authors: Girão Hugo , Okada Naoyuki , Rodrigues Tony A. , Silva Alexandra O. , Figueiredo Ana C. , Garcia Zaira , Moutinho-Santos Tatiana , Hayashi Ikuko , Azevedo Jorge E. , Macedo-Ribeiro Sandra , Maiato Helder
Published: November 2019

CLASPs are conserved microtubule plus-end–tracking proteins that suppress microtubule catastrophes and independently localize to kinetochores during mitosis. Thus, CLASPs are ideally positioned to regulate kinetochore–microtubule dynamics required for chromosome segregation fidelity, but the underlying mechanism remains unknown. Here, we found that human CLASP2 exists predominantly as a monomer in solution, but it can self-associate through its C-terminal kinetochore-binding domain. Kinetochore localization was independent of self-association, and driving monomeric CLASP2 to kinetochores fully rescued normal kinetochore–microtubule dynamics, while partially sustaining mitosis. CLASP2 kinetochore localization, recognition of growing microtubule plus-ends through EB–protein interaction, and the ability to associate with curved microtubule protofilaments through TOG2 and TOG3 domains independently sustained normal spindle length, timely spindle assembly checkpoint satisfaction, chromosome congression, and faithful segregation. Measurements of kinetochore–microtubule half-life and poleward flux revealed that CLASP2 regulates kinetochore–microtubule dynamics by integrating distinctive microtubule-binding properties at the kinetochore–microtubule interface. We propose that kinetochore CLASP2 suppresses microtubule depolymerization and detachment by binding to curved protofilaments at microtubule plus-ends.
Autophagy and cancer: Modulation of cell death pathways and cancer cell adaptations
Authors: Towers Christina G. , Wodetzki Darya , Thorburn Andrew
Published: November 2019

Autophagy is intricately linked with many intracellular signaling pathways, particularly nutrient-sensing mechanisms and cell death signaling cascades. In cancer, the roles of autophagy are context dependent. Tumor cell–intrinsic effects of autophagy can be both tumor suppressive and tumor promotional. Autophagy can therefore not only activate and inhibit cell death, but also facilitate the switch between cell death mechanisms. Moreover, autophagy can play opposing roles in the tumor microenvironment via non–cell-autonomous mechanisms. Preclinical data support a tumor-promotional role of autophagy in established tumors and during cancer therapy; this has led to the launch of dozens of clinical trials targeting autophagy in multiple cancer types. However, many questions remain: which tumors and genetic backgrounds are the most sensitive to autophagy inhibition, and which therapies should be combined with autophagy inhibitors? Additionally, since cancer cells are under selective pressure and are prone to adaptation, particularly after treatment, it is unclear if and how cells adapt to autophagy inhibition. Here we review recent literature addressing these issues.
New Optical Soliton Solutions of the Perturbed Fokas-Lenells Equation
Authors: Shehata Maha S. M. , Rezazadeh Hadi , Zahran Emad H. M. , Tala-Tebue Eric , Bekir Ahmet
Published: November 2019

In this article, we employ the perturbed Fokas-Lenells equation (FLE), which represents recent electronic communications. The Riccati-Bernoulli Sub-ODE method which does not depend on the balance rule is used for the first time to obtain the new exact and solitary wave solutions of this equation. This technique is direct, effective and reduces the large volume of calculations.
Dirac Oscillator Under the New Generalized Uncertainty Principle From the Concept Doubly Special Relativity
Authors: Sargolzaeipor S. , Hassanabadi H. , Chung W. S.
Published: November 2019

We discuss one-dimensional Dirac oscillator, by using the concept doubly special relativity. We calculate the energy spectrum by using the concept doubly special relativity. Then, we derive another representation that the coordinate operator remains unchanged at the high energy while the momentum operator is deformed at the high energy so that it may be bounded from the above. Actually, we study the Dirac oscillator by using of the generalized uncertainty principle version and the concept doubly special relativity.
Polarized Debye Sheath in Degenerate Plasmas*
Authors: Shahmansouri M. , Misra A. P.
Published: November 2019

The force on a charged dust grain in a plasma due to polarization of thermal ions and degenerate electrons around the grain is derived in the limits of weakly relativistic and ultra-relativistic degeneracy of electrons. It is found that in both these cases, the magnitude of the polarization force is enhanced compared to that in classical plasmas. The influence of this force on dust-acoustic (DA) modes is examined and discussed. It is shown that the DA wave frequency in degenerate plasmas is significantly reduced compared to the classical DA mode.
Absorption Enhancement of Ultrathin Crystalline Silicon Solar Cells with Dielectric Si3N4 Nanostructures*
Authors: Tan Xin-Yu , Sun Lei , Zhang Guo-Rong , Deng Can , Tu Yi-Teng , Guan Li
Published: November 2019

A design of ultrathin crystalline silicon solar cell with Si3N4 circular truncated cone holes (CTCs) arrays on the top is proposed. In this article, we perform an optical simulation of the structure. The finite-difference time-domain method is used to calculate the optical absorption of different periods, radius of top and bottom circles and depth of Si3N4 CTCs. The short-circuit current density generated by the optimized cells (30.17 mA/cm2) is 32.44% more than the value gained by control group (with flat Si3N4). Then adding a layer of back silver to allow us to better analyze optical absorption. Later, we simulate the optimization of the same configuration of different silicon thicknesses and find that our structure does enhance the light absorption. This work uses a combined path towards achieving higher photocurrent ultrathin crystalline silicon solar cells by constructing the texture of anti-reflection coating.
Thermal production of charmonia in Pb-Pb collisions at

TeV *
Authors: Chen Baoyi
Published: November 2019

This work uses the Boltzmann transport model to study the thermal production of

and

in the quark gluon plasma (QGP) produced by

TeV Pb-Pb collisions. The

nuclear modification factors are studied in detail alongside the mechanisms of primordial production and the recombination of charm and anti-charm quarks in the thermal medium. The

binding energy is much smaller in the hot medium compared to the ground state; thus,

with middle to low

can be thermally regenerated in the later stages of QGP expansions, enabling

to inherit larger collective flows from the bulk medium. We quantitatively study the nuclear modification factors of both

and

in different centralities and transverse momentum bins for

TeV Pb-Pb collisions.
Growth analysis of Microsporum canis using husk rice (Oryza Sativa L. CV. Ciherang) as a replacement for media Sabouroud Dextrose Agar (SDA)
Authors: Syafrullah H , Oktari A , Supriatin Y , Husni M
Published: November 2019

Rice husk is a hard layer covering caryopsis which consists of two parts called the lemma and palea which are interconnected in the milling process. Rice husk is categorized as biomass that can be used for variety of needs such as raw materials and animal feed. Rice husk containing sources of carbohydrates and proteins which are the factors those support the growth of fungi. Sabouroud Dextrose Agar (SDA) is medium that could be used for the growth of fungi. Experimental research had been carried out by inoculating Microsporum canis in alternative media such as rice husk. This study aimed to compare the growth of Microsporum canis in alternative media and control media. It has been done by varying concentrations of rice husk media into 4.5%, 5%, and 5.5%. Observations done in 14 days, at room temperature with macroscopic examination each day by measuring the colony diameter using calipers. Microscopic examinations measure the length of macroconidia and Microsporum canis hyphae using microscope equipped with microoculary lens by staining using Lactophenol Cotton Blue (LPCB). Observations processed statistically using one-way ANOVA. From the result of the statistical test was concluded that rice husk powder concentration of 5.5% is the optimum concentration for the growth of Microsporum canis and can be used as a replacement media for Sabouroud Dextrose Agar (SDA).
Android-based expert system design for drug selection using certainty factor
Authors: Slamet C , Firmanda B , Ramdhani M A , Darmalaksana W , Enjang E , Kaffah F M
Published: November 2019

Handling some types of diseases require medical therapy in the form of drug delivery. Appropriate medication should be conducted with assistance from medical experts for doses and types of drugs can be given properly and correctly. This study aims to discuss drug selection system design using certain certainty factor method with android-based. The disease that used as a discussion object is diabetes mellitus disease. System design methodology uses UML (Unified Modelling Language) modelling approach. The design results show that the system can make an early diagnosis of diabetes mellitus type II and drug selection recommendation for diabetes mellitus type II. Since health is essential to the safety of the human psyche, this application system can only be used as the third opinion of the diagnosis of diabetes mellitus type II.
Linear congruent method on computer based test for new student admission
Authors: Zulfikar W B , Fajar A , Wahana A , Maylawati D S , Ramdhani M A
Published: November 2019

The new admissions examination is an early process in advanced education. Through the entrance examination, the school can select students with the best potential. The exam results can be used as a standard of candidate ability which can further be utilized as a determination of content, methods, and learning strategies. The purpose of this study is to design a system using Linear Congruent Method (LCM) algorithm on the Computer Based Test (CBT) for the new admissions exam. The system build using Waterfall software development life cycle method. The designation of the LCM algorithm is based on consideration of the conformity of the LCM algorithm to be used in the randomization of questions on CBT. The result of experiment shows the ability of LCM to randomize the question and answer of new student admission test is running well, so that the exam process can avoid the cheating of examinees, and on the other hand the assessment can do objectively, quickly, and accurately.
Comparison of naive Bayes classifier and C4.5 algorithms in predicting student study period
Authors: Gerhana Y A , Fallah I , Zulfikar W B , Maylawati D S , Ramdhani M A
Published: November 2019

This study aims to compare Naive Bayes Classifier algorithm with C4.5 in predicting the study period of student. The data for this study is collected from Department of Informatics UIN Sunan Gunung Djati Bandung. Software development method that used is Rational Unified Process (RUP). Comparison of both algorithms is the accuracy of predicting student study period and the speed of data processing. The attributes that used are student id, name, gender, GPA, entry point, tahfidz (cited the holy Quran as a special attribute on the case study), previous school, and extra activities during lecture. The result of this study shows that Naive Bayes Classifier and C4.5 algorithm can be applied to predict the study period of students well and accurate enough. The accuracy of Naive Bayes Classifier algorithm is around 88% better slightly than the C4.5 algorithm that has accuracy around 87%. However, the processing time of algorithm C4.5 is better than the algorithm Naive Bayes Classifier, C4.5 has processing time 0.003 nanosecond and the Naive Bayes Classifier has 12.7 nanosecond.
Maximum Sustainable Yield (MSY) value in predator-prey model with holling type ii functional response
Authors: Ilahi F , Widiana A
Published: November 2019

Maximum Sustainable Yield (MSY) is a management exploitation that aims to maximize the catch but still maintain its sustainability. In this article, the authors try to build a model which have been modified from basic Lotka-Volterra model with addition logistic function to prey population and Holling Type II functional response to predator population as well as harvesting of both population. The equilibrium points and the stabilityvare done here through the linearization. Dynamical simulations are shown to illustrate the dynamics of the two populations. Based on the results of analysis and dynamical simulation, the MSY value can be achieved when the harvesting efforts does not exceed or equal the MSY value.
Steady state conditions predictions of time-dependent infiltration problems: an LTDRM with a predictor-corrector scheme approach
Authors: Zahroh M , Solekhudin I
Published: November 2019

Time-dependent infiltration problems from periodic irrigation channels with root-water uptake processes, which is modelled using a Richards equation, are studied. The problems is solved numerically. To solve the problems, a set of transformations and a Laplace Transform Dual Reciprocity Method (LTDRM) with a predictor corrector scheme are employed. Finally, employing Gaver-Stehfest formula and diffusivity factor, the numerical solutions of these problems are obtained. Predictions of time needed to achieve steady state conditions for different homogeneous soils are presented and discussed.
An SIR mathematical model for Dipterid disease
Authors: Husain H S
Published: November 2019

In this paper we discuss SIR mathematical of diphtheria transmission by simplify the assumptions and find parameters that give contribution to endemic and nonendemic condition. The model assumes that infected humans can heal by itself. We try to analyse what happen in this simplest mathematical model of diphtheria transmission even though in practise, it is not realistic and cannot eliminate the disease. We use Basic Reproduction Number to analyse the endemic equilibrium. We open discussion if this model can be expanded by adding more complex parameters and variables.
Design watering system on greenhouse using microcontroller with matrix based
Authors: Mudiyanti R , Aminudin A , Hasanah L
Published: November 2019

Chili commodities are urgently required by Indonesian citizens. Planting a chili are using two ways, with an open land such as a rich field and close land which is a greenhouse. In order to develop the highest quality for chili using greenhouse method, we need a right treatment to watering. Nowadays, many people still using a manual method to water plants with a long hose to reach all the plants in the garden. The purpose of this research is to give a solution regarding that issue which to make a new technology at watering plants using the automatic watering tool, therefore, we could save time and energy, also knowing the accuracy of motor stepper movement. This method research is designed and builds automatic watering tool with 3 rows x 3 columns with a total of 9 plants and method using soil moisture sensor. The result of this research proving that accuracy of the stepper motor is 99,48%, errors that occur in the movement of the stepper motor is very minimal and this watering system is working when the moisture content in a soil is less than 60%.
The sensitivity of earthquake input motion correlation with arias intensity and amplification, case study: Yogyakarta Special Region
Authors: Syahbana A J , Sari A M , Soebowo E , Irsyam M , Hendriyawan H , Asrurifak M
Published: November 2019

Earthquake problems are a fascinating topic that discussed among the scientific and academic in the world, including of these is the parameter of a sensitivity. In this study, the sensitivity level of earthquake input motion in bedrock correlated with intensity arias and amplification occurring at the surface. The selected location of the study is an earthquake-prone area with the last record of a major earthquake in 2006, i.e., Yogyakarta Special Region. There are 3 (three) study areas with different geological environments. The analysis is determined by these steps: (1) Probabilistic Seismic Hazard Analysis/PSHA (2) disaggregation (3) selection of motion input and (4) wave propagation analysis to obtain a graph of Arias intensity and amplification value. All of those are aided by EzFrisk and DeepSoil software. The results of this study, i.e., the higher natural frequency at the site, then the lesser amplification developed. The highest amplification takes place at BH-04 which has the smallest natural frequency. On the other hand, the lowest value occurred at BH-02 on the highest natural frequency. There is a tendency that the smaller delta on the effective time arias intensity, the more significant amplification be occurred, except for Loma Prieta ground motion.
The new hilaal visibility criterion for tropical region
Authors: Utama J A , Simatupang F M , Amsor
Published: November 2019

We propose a new Hilaal (lunar crescent formed immediately after conjunction) visibility criterion apply to tropical region utilizing modified mathematical model of near-sun objects visibility. By using only naked eye positive sightings of Hilaal, then we are calculating the Moon and Sun observation parameters to obtain the visibility function for each case. Moon – Sun altitude difference (ARCV – Arc of Vision) and elongation (ARCL – Arc of Light) at the first observable moment have been chosen as parameters and used in developing new visibility criterion. The data show that the minimum ARCV and ARCL value for naked eye observation at the moment of Hilaal is observed are 8.4° and 7.1°, respectively. Our results can be proposed as a scientifically criterion for constructing Hijri calendar for tropical region (including Indonesia) as an alternative to Jakarta Recommendations criterion.
Pore structure characterization of concrete mixtures with different aggregates using digital image processing and analysis
Authors: Latief F D E , Mohammad I H , Rarasati A D , Handika N
Published: November 2019

The presence of pores in a volume of concrete obviously affects the compressive strength of concrete (fc). Furthermore, characteristics of pores formed in concrete may vary, such as in shape, in size, in volume, and/or in its orientation tendencies. These characteristics also depend on the ingredient materials and the concrete casting process. In this research, three types of concrete in a form of cylindrical sample were analysed in order to investigate their pore structure characteristics. The first type of specimen is a core sample taken from a beam of an existing reinforced concrete structure building. It has 18 MPa of compressive strength. For the second type, an instant concrete with 40 MPa of designed compressive strength and 9 cm of slump test was chosen. The third sample is a concrete with Oil Palm Shell (OPS) as coarse aggregate substitution with 17 MPa of compressive strength. These three kinds of sample were scanned with a Bruker Micro-CT SkyScan 1173 device. The scanning process produced a set of projection images which were then reconstructed to obtain three-dimensional digital grayscale images. The pores inside the concrete sample are detected as dark pixels, which represent low-density structure. Based on the detected pores, the characteristics such as the volume distribution, the size distribution, the spatial distribution, as well as several structural descriptors such as shape, orientation and eccentricity of the pores were analysed. This study concludes that the type of aggregate greatly influences the characteristics of the pore formed in a concrete.
Air pressure in mini hovercraft
Authors: Triayomi R
Published: November 2019

calculate the pressure on the mini hovercraft experiments by using the formula by knowing the mass of large balloon is 20,49 gr with a force of 0,2045 N was counted after balloon filled by air. The surface area was 0.011304 m2 so the obtained pressure was 18.09 Pa. Calculation of a small balloon pressure with a mass of 20.3 g calculated after the balloon is filled with air by the force of surface area 0.203 the N of the surface area 0,011304 m2 then the pressure of Pa is 17.95. A simple mini hovercraft that used for physics learning media on the pressure principal explains the utilization of air pressure on the mini hovercraft. The making of this mini hovercraft as a learning media is aimed to show the concept of pressure. From the results of observation and analysis of the data, it was proved that air pressure generated can produce bigger lift than the mini hovercraft weight. The air flowing out from the balloon in the bottom caused the mini hovercraft to be pushed upward.
Genetics in socio scientific issues: measuring rebuttal abilities in scientific argumentation
Authors: Anisa A , Widodo A , Riandi R , Muslim M
Published: November 2019

Genetics is one of the most important concepts in understanding Biology. Even though it is now widely applied in various socio-scientific issues, often, it also causes debate in the society, especially in the learning process. Students’ argumentation in addressing socio-scientific issues that arise can be used as an assessment to see how students think in supporting or denying their claims. Utilize the case study on 21 high school students in one of West Java public school; the study aims to see students’ rebuttal ability and the genetic concept they use to support their denial. The results showed that 34.92% students giving rebuttals, with 14.29% of them provide conceptual support that relevant to genetics, while another 47.62% students provide a general Biology conceptual support, 14.29% students provide a misconception of genetics, and 23.81% using an irrelevant concept. It shows that it is important to do the learning that supports the growth of rebuttal ability in the learning process so that students’ critical thinking ability becomes better, especially in understanding the genetic concepts in school and social life.
Media needs of plant anatomy practicum on digital microscope blended learning system on student naturalist intelligence
Authors: Sugianto S , Fitriani A , Anggraeni S , Setiawan W
Published: November 2019

Naturalist intelligence of students is rarely measured by lecturers and the anatomy practicum media of blended learning systems based on digital microscopes has never been applied by lecturers as a plant anatomy practicum on campus, then conducted research with the aim to determine the media needs of plant anatomy based on microscope towards student naturalist intelligence. This research is a quantitative study using the True-Experimental Design design with the design of the Posttest-Only Control Group. The population in this study were all level II students of Wiralodra Indramayu University which consisted of 3 classes with a total of 96 students. The sampling technique using the cluster random sampling type probability sampling technique obtained Bio C class as the experimental group and Bio A class as the control group. The instrument in this study is a student’s naturalist intelligence test which consists of 5 questions. Based on the results of the study, it was found that the average in the experimental class was 74 and the control class was 63.75. With a significant level (α) = 0.05 and degrees of freedom (db) 62, tcount = 28.29 and table = 2,000. Because tcount> t table. This means that the media needs of plant anatomy practicum on digital microscope-based blended learning system have a significant effect on the naturalist intelligence of prospective students of biology education teachers.
Strengthen the student environmental literacy through education with low carbon education teaching materials
Authors: Amin M S , Permanasari A , Setiabudi A
Published: November 2019

Science education should be able to make the students better understand and be sensitive to the environment. Nowadays, earth is affected by the greenhouse effect and global warming, which is caused by greenhouse gas emissions, especially CO2. Instil the awareness and sensitivity (environmental literacy) about the environment is very important to do. Education is the best way to grow and develop environmental literacy among the younger generation. The educational component that is very easy to be used as a means is a teaching material in the form of low carbon teaching materials. This study aims to provide a formulation of the social context associated with a reduction in CO2 emissions and its scientific explanation, as well as describe the pattern of presentation of these substances in the teaching materials. Low carbon teaching materials become a vehicle that raises the whole substance relating to CO2 emission reduction efforts. Substance in these materials taken from the contexts of everyday life, for example the CO2 emissions of various types of lamp, CO2 emissions in the type of fuel, CO2 emissions in the type of energy (LPG-LNG-Biogas), until the CO2 emissions from cigarette that burned. These contexts are given its scientific explanation (including calculations) but are presented in a simple-structured in the low carbon materials thus substantially easier to grasp. The presentation is also accompanied by analysis, stimulation of high order thinking skills, activities, and personal-contextual analysis
Context-based content representation, curriculum understanding, and self-efficacy: a correlation study on pre-service chemistry teacher
Authors: Wiyarsi A , Sutrisno H , Rohaeti E
Published: November 2019

CoRe is one of the Pedagogical Content Knowledge (PCK) representation that it important for pre-service chemistry teacher. This study aimed to analyze the correlation among pre-service teachers’ understanding of curriculum (UC), understanding of context-based learning (UCB), self-efficacy (SE) and the ability for designing Content Representation context-based chemistry (CoRe-CBC). A correlational study was conducted on 41 pre-service chemistry teacher of postgraduate program. Pre-service teachers’ understanding of curriculum was assessed using a 30-item of multiple choices. The 6-open ended questions were used to measure the understanding of context-based chemistry learning. Students’ self-efficacy was assessed by a questionnaire with 18 items. A group of experts confirmed the construct and face validity of all the instruments. Data analysis used Pearson correlation and regression. The result showed a high correlation between UCB and ability for designing the CoRe-CBC also with UC. A low correlation occurred between UC and the ability for designing CoRe-CBC. The variable of UCB had the biggest effect on the pre-service teacher ability for designing CoRe-CBC. However, the pre-service chemistry teacher still had less understanding in context-based chemistry learning. This study suggests that pre-service teachers’ understanding of curriculum and context-based chemistry learning should be improved. It will useful to support the implementing context-based chemistry learning.
Assessing knowledge management system maturity level of teacher professional competence
Authors: Fitriasari N S , Megasari R , Piantari E
Published: November 2019

Improving the teacher competence is the most important thing to improve the quality of national education. Indonesia Government regulates the teacher professional competence so it can be measured and evaluated. Knowledge Management System has been widely implemented in schools to improve the effectiveness of learning. However, it is not specifically for teacher professional achievement. This paper presents the assessment process to measure the maturity level of Knowledge Management System for Senior High School Program in Lab schools UPI. The assessment of maturity level is based on five elements of Knowledge Management System i.e. Organization, Knowledge Management Process, Knowledge Management Technology and Knowledge Artefact. 3T Frameworks was used to measure maturity level of Knowledge Management System.
Learning Management System (LMS) model based on machine learning supports 21st century learning as the implementation of curriculum 2013
Authors: Herbert  , Putro B L , Putra R R J , Fitriasari N S
Published: November 2019

The 21st Century learning is an effort to facilitate learners in the 21st century to experience the best learning experience so that they can achieve the learning objectives effectively. The 2013 curriculum is a shift in the 21st century education paradigm in Indonesia. One of the prominent features of 21st century learning is digital-based learning. Digital-based learning based on this research apply Learning Management System (LMS). The application of Machine Learning (Online Collaboration, Behavioural Tracking, and Learning Analytics) to LMS has great potential for realizing 21st century learning. The benefits of implementing machine learning are for LMS automation in the assessment of the 21st century learning process, making it easier for teachers to analyse learning outcomes. The purpose of this research is to create LMS model based on Machine Learning to support 21st Century Learning as the Implementation of Curriculum 2013. The utilization of machine learning shows positive result to 21st century learning process. Automated analysis can support the 21st century learning process.
The development of computer adaptive test and item response theory with 4 parameters based the logistics model
Authors: Riza L S , Nurjanah N S , Wihardi Y
Published: November 2019

Students’ abilities can be measured by making a test whose the number and content of questions have been determined for each student. However, it is less effective because the distribution of students’ abilities is different. By using Computer Adaptive Test (CAT) and Item Response Theory (IRT), the test can be done more quickly even though each student might solve different number and content questions. Therefore, in this research we develop CAT and IRT with 4 parameters based logistics model to evaluate the students’ ability. Some experiments conducted on 27 students with 50 number of questions were analyzed and compared with Classical Test Theory (CTT). The results indicate the system can be used as an alternative tool for evaluating the students’ ability.