bluuebunny/crossref_metadata_2025 huggingface dataset:
The many-body expansion approach to ab initio calculation of electric field gradients in molecular crystals
Authors: Gregorovič Alan
Published: March 2020

Accurate calculation of electric field gradients (EFGs) in molecular crystals, despite big advances in ab initio techniques, is still a challenge. Here, we present a new approach to calculate the EFGs in molecular crystals by employing the many-body expansion (MBE) technique with electrostatic embedding. This allows for (i) a reduction in the computational cost or an alternative increase in the level of theory (we use the MP2/6-311++G) and (ii) the ability to monitor EFG convergence by progressively adding more surrounding molecules and/or adding higher many-body interactions. We focus on the 14N EFG and study four (model) compounds in more detail: solid nitrogen, ethylamine, methylamine, and ammonia. Solid nitrogen is rather insensitive to neighbors; for ethylamine and methylamine, the 3-body interactions are found sufficient for a converged EFG, whereas for ammonia, even the inclusion of 5-body interactions is insufficient although convergence is anticipated. We then validate our technique by comparing the experimental and ab initio14N EFGs for 116 organic compounds utilizing their known crystal structures and published EFG. Overall, we find a very good agreement, with a small EFG rms error, which is probably due to other sources, rather than the MBE approximation.
Portable solid-state nanopore device is used for sensing molecules in Antarctic samples
Authors: Mandel Savannah
Published: March 2020

A solid-state nanopore device, perfect for sensing biomolecules, holds potential for use on space missions and in extreme environments.
Atomic-scale spin textures safely imaged at nanometer distances
Authors: Mandel Savannah
Published: March 2020

Spin-polarized scanning tunneling microscopy proves to be an efficient and low-risk method of imaging spin textures at up to 8 nm.
Nanoconfinement of salty water results in complex effects
Authors: Mandel Savannah
Published: March 2020

Quantum mechanical simulations reveal the effects of ions and nanoconfinement on the structural and electronic properties of water.
New etched-mirror fabrication process for aluminum gallium nitride laser diodes
Authors: Frank Jodi Ackerman
Published: March 2020

The on-wafer method combines dry- and wet-etching techniques for precise, low-cost manufacturing of deep ultraviolet laser diodes.
Theoretical analysis of electrode-dependent interfacial structures on hydrate-melt electrolytes
Authors: Takenaka Norio , Inagaki Taichi , Shimada Tatau , Yamada Yuki , Nagaoka Masataka , Yamada Atsuo
Published: March 2020

Aqueous electrolytes have the potential to overcome some of the safety issues associated with current Li-ion batteries intended for large-scale applications such as stationary use. We recently discovered a lithium-salt dihydrate melt, viz., Li(TFSI)0.7(BETI)0.3·2H2O, which can provide a wide potential window of over 3 V; however, its reductive stability strongly depends on the electrode material. To understand the underlying mechanism, the interfacial structures on several electrodes (C, Al, and Pt) were investigated by conducting molecular dynamics simulation under the constraint of the electrode potential. The results showed that the high adsorption force on the surface of the metal electrodes is responsible for the increased water density, thus degrading the reductive stability of the electrolyte. Notably, the anion orientation on Pt at a low potential is unfavorable for the formation of a stable anion-derived solid electrolyte interphase, thus promoting hydrogen evolution. Hence, the interfacial structures that depend on the material and potential of the electrode mainly determine the reductive stability of hydrate-melt electrolytes.
Sub-2 cm/s passivation of silicon surfaces by aprotic solutions
Authors: Pointon Alex I. , Grant Nicholas E. , Pain Sophie L. , White Joshua T. , Murphy John D.
Published: March 2020

Minimizing recombination at semiconductor surfaces is required for the accurate determination of the bulk carrier lifetime. Proton donors, such as hydrofluoric acid and superacids, are well known to provide highly effective short-term surface passivation. We demonstrate here that aprotic solutions based on bis(trifluoromethanesulfonyl)methane (TFSM) in hexane or pentane can also result in excellent passivation of (100)-orientation silicon surfaces. We show that the optimized TFSM-pentane passivation scheme can measure effective lifetimes up to 20 ms, with a surface recombination velocity of 1.7 cm s−1 at an excess carrier density of 1015 cm−3. Fitting injection-dependent lifetime curves requires chemical passivation and field effect passivation from a negatively charged layer with a charge density of 1010–1011 q cm−2. The slightly higher recombination velocity of 2.3 cm s−1 measured with TFSM-hexane can be explained by a lower charge density in the passivating layer, suggesting that the steric hindrance associated with the solvent size could play a role in the passivation mechanism. Finally, phosphorus nuclear magnetic resonance experiments confirm that TFSM-based solutions have Lewis acidity without being superacids, which opens up opportunities for them to be used in materials systems sensitive to superacidic environments.
Agronomic, physiological and molecular characterisation of rice mutants revealed the key role of reactive oxygen species and catalase in high-temperature stress tolerance
Authors: Zafar Syed Adeel , Hameed Amjad , Ashraf Muhammad , Khan Abdus Salam , Qamar Zia-ul- , Li Xueyong , Siddique Kadambot H. M.
Published: March 2020

Climatic variations have increased the occurrence of heat stress during critical growth stages, which negatively affects grain yield in rice. Plants adapt to harsh environments, and particularly high-temperature stress, by regulating their physiological and biochemical processes, which are key tolerance mechanisms. The identification of heat-tolerant rice genotypes and reliable selection indices are crucial for rice improvement programs. Here, we evaluated the response of a rice mutant population for high-temperature stress at the seedling and reproductive stages based on agronomic, physiological and molecular indices. Estimates of variance components revealed significant differences (P < 0.001) among genotypes, treatments and their interactions for almost all traits. The principal component analysis showed significant diversity among genotypes and traits under high-temperature stress. The mutant HTT-121 was identified as the most heat-tolerant mutant with higher grain yield, panicle fertility, cell membrane thermo-stability (CMTS) and antioxidant enzyme levels under heat stress. Various seedling-based morpho-physiological traits (leaf fresh weight, relative water contents, malondialdehyde, CMTS) and biochemical traits (superoxide dismutase, catalase and hydrogen peroxide) explained variations in grain yield that could be used as selection indices for heat tolerance in rice during early growth. Notably, heat-sensitive mutants accumulated reactive oxygen species, reduced catalase activity and upregulated OsSRFP1 expression under heat stress, suggesting their key roles in regulating heat tolerance in rice. The heat-tolerant mutants identified in this study could be used in breeding programs and to develop mapping populations to unravel the underlying genetic architecture for heat-stress adaptability.
Repeating responses as a conversational affordance for linguistic transmission
Authors: Gipper Sonja
Published: March 2020

Given that face-to-face interaction is an important locus for linguistic transmission (Enfield 2008: 297), it is argued in this paper that conversational structure must provide affordances
(Gibson 1979) for transmitting linguistic items. The paper focuses on repeats where
an interactant (partially) repeats their interlocutor’s preceding utterance. Repeats are argued to provide affordances for the
transmission of innovative and conservative linguistic items by forcing interactants to repeat linguistic material uttered by
another person, facilitating production by exploiting priming effects. Moreover, repeats leave room for modification and thereby
for actively resisting transmission. In this way, repeats unite the competing forces (Tantucci
et al. 2018) of automaticity and creativity. To support this claim, this paper investigates the use of Spanish
insertions and alternative variants in utterance-repeat pairs in Yurakaré (isolate, Bolivia) conversations. The findings are
compatible with a holistic view of language where all linguistic levels are interconnected (Beckner et al. 2009).
Indefinite expressions and accessibility hierarchy to core argument functionsin a sample of Austronesian
languages(and beyond)
Authors: Bril Isabelle
Published: March 2020

In many languages, indefinite expressions are known to have restricted access to core argument functions. This
article focuses on the accessibility hierarchy of indefinite expressions to subject and object functions in a sample of
Austronesian languages. Aiming at some comparative analysis, some cross-linguistic perspectives on the differential encoding of ±
definite core arguments and other types of restrictions are discussed. The questions addressed are: (i) What type of indefinite
nouns have core argument function? (ii) If barred from core argument function, how are indefinite arguments circumvented? (iii)
Does existence or lack of indefinite articles correlate with access to core argument function, and in what way?

In Austronesian languages, one finding is that languages with indefinite articles display fewer restrictions on
the access of indefinite NPs to core argument function. Another finding is that differences of definiteness, individuation and
specificity of arguments tend to be expressed by distinct domains: the noun phrase in languages with indefinite articles, the verb
phrase in languages without indefinite articles (via valency, voice alternations, alignment changes), with an intermediate
situation in some Micronesian languages.
Ditransitive constructions in Akebu
Authors: Makeeva Nadezhda , Shluinsky Andrey
Published: March 2020

This paper contributes to the typology of ditransitive constructions. Akebu (Kwa, Ghana-Togo mountain, West
Africa) has four strategies of alignment of ditransitive verbs, if both theme and recipient objects are expressed: a neutral
strategy, a possessive-like strategy, a strategy with a pronominal reprise and a ‘take’ serial verb construction strategy. The
possessive-like strategy that is most standard in Akebu is rare in a cross-linguistic perspective and has not been attested in
other Kwa languages. The factors that license a certain strategy are person, number and noun class of the theme and recipient and
the internal structure of the theme noun phrase.
Strength and strain-hardening enhancement by generating hard delta-ferrite in twinning-induced plasticity steel
Authors: Fu Bin , Pei Chenghao , Guo Yanhui , Fu Liming , Shan Aidang
Published: March 2020

A dual-phase (12 vol.% delta-ferrite + 78 vol.% austenite) high manganese twinning-induced plasticity (TWIP) steel was produced by hot rolled and annealing treatment. In comparison with the fully austenitic TWIP steel, both the yield and ultimate tensile strength of the dual-phase TWIP steel reinforced by hard delta-ferrite are significantly increased. It was found that the delta-ferrite in dual-phase steel exhibits a high hardness owing to the formed DO3 structured intermetallic phase within ferrite. The presence of delta-ferrite dramatically improves the strain-hardening ability of TWIP steel. This is principally attributed to the effects of strain partitioning between hard delta-ferrite and softer austenite on the kinetics of deformation twinning and/or additional geometrical necessary dislocation (GND) during the deformation process.
Standards of Mental Health Care in Prisons in England and Wales: A Qualitative Study of Reports from Her Majesty’s Inspectorate of Prisons
Authors: Glorney Emily , Ullah Hana , Brooker Charlie
Published: March 2020

The high prevalence of mental health problems in prisons is well established and there are ongoing challenges to mental health care and service provision. The aim of this research was to identify practice that was working well and where there was scope for improvement. Forty-two independent inspectorate reports on conditions for and treatment of people across all seven categories of prison in England and Wales were analyzed thematically. Themes of What is Working and Shortfalls identified that multidisciplinary working, good communication, balancing care with security, and positive staff-prisoner relationships supported mental health, but there were numerous shortfalls in service provision across the prison estate. Conclusions support an agenda of prison reform with mental health as a key priority.
Are we ready to measure running power? Repeatability and concurrent validity of five commercial technologies
Authors: Cerezuela‐Espejo Víctor , Hernández‐Belmonte Alejandro , Courel‐Ibáñez Javier , Conesa‐Ros Elena , Mora‐Rodríguez Ricardo , Pallarés Jesús G.
Published: March 2020

Training prescription in running activities have benefited from power output (PW) data obtained by new technologies. Nevertheless, to date, the suitability of PW data provided by these tools is still uncertain. The present study aimed to: (i) analyze the repeatability of five commercially available technologies for running PW estimation, and (ii) examine the concurrent validity through the relationship between each technology PW and oxygen uptake (VO2). On two occasions (test‐retest), twelve endurance‐trained male athletes performed on a treadmill (indoor) and an athletic track (outdoor) three submaximal running protocols with manipulations in speed, body weight and slope. PW was simultaneously registered by the commercial technologies StrydApp, StrydWatch, RunScribe, GarminRP and PolarV, while VO2 was monitored by a metabolic cart. Test‐retest data from the environments (indoor and outdoor) and conditions (speed, body weight and slope) were used for repeatability analysis, which included the standard error of measurement (SEM), coefficient of variation (CV) and intraclass correlation coefficient (ICC). A linear regression analysis and the standard error of estimate (SEE) were used to examine the relationship between PW and VO2. Stryd device was found as the most repeatable technology for all environments and conditions (SEM ≤ 12.5 W, CV ≤ 4.3%, ICC ≥ 0.980), besides the best concurrent validity to the VO2 (r ≥ 0.911, SEE ≤ 7.3%). On the contrary, although the PolarV, GarminRP and RunScribe technologies maintain a certain relationship with VO2, their low repeatability questions their suitability. The Stryd can be considered as the most recommended tool, among the analyzed, for PW measurement.
A direct role for SNX9 in the biogenesis of filopodia
Authors: Jarsch Iris K. , Gadsby Jonathan R. , Nuccitelli Annalisa , Mason Julia , Shimo Hanae , Pilloux Ludovic , Marzook Bishara , Mulvey Claire M. , Dobramysl Ulrich , Bradshaw Charles R. , Lilley Kathryn S. , Hayward Richard D. , Vaughan Tristan J. , Dobson Claire L. , Gallop Jennifer L.
Published: March 2020

Filopodia are finger-like actin-rich protrusions that extend from the cell surface and are important for cell–cell communication and pathogen internalization. The small size and transient nature of filopodia combined with shared usage of actin regulators within cells confounds attempts to identify filopodial proteins. Here, we used phage display phenotypic screening to isolate antibodies that alter the actin morphology of filopodia-like structures (FLS) in vitro. We found that all of the antibodies that cause shorter FLS interact with SNX9, an actin regulator that binds phosphoinositides during endocytosis and at invadopodia. In cells, we discover SNX9 at specialized filopodia in Xenopus development and that SNX9 is an endogenous component of filopodia that are hijacked by Chlamydia entry. We show the use of antibody technology to identify proteins used in filopodia-like structures, and a role for SNX9 in filopodia.
The blood–brain barrier in health and disease: Important unanswered questions
Authors: Profaci Caterina P. , Munji Roeben N. , Pulido Robert S. , Daneman Richard
Published: March 2020

The blood vessels vascularizing the central nervous system exhibit a series of distinct properties that tightly control the movement of ions, molecules, and cells between the blood and the parenchyma. This “blood–brain barrier” is initiated during angiogenesis via signals from the surrounding neural environment, and its integrity remains vital for homeostasis and neural protection throughout life. Blood–brain barrier dysfunction contributes to pathology in a range of neurological conditions including multiple sclerosis, stroke, and epilepsy, and has also been implicated in neurodegenerative diseases such as Alzheimer’s disease. This review will discuss current knowledge and key unanswered questions regarding the blood–brain barrier in health and disease.
Action potentials in Xenopus oocytes triggered by blue light
Authors: Walther Florian , Feind Dominic , vom Dahl Christian , Müller Christoph Emanuel , Kukaj Taulant , Sattler Christian , Nagel Georg , Gao Shiqiang , Zimmer Thomas
Published: March 2020

Voltage-gated sodium (Na+) channels are responsible for the fast upstroke of the action potential of excitable cells. The different α subunits of Na+ channels respond to brief membrane depolarizations above a threshold level by undergoing conformational changes that result in the opening of the pore and a subsequent inward flux of Na+. Physiologically, these initial membrane depolarizations are caused by other ion channels that are activated by a variety of stimuli such as mechanical stretch, temperature changes, and various ligands. In the present study, we developed an optogenetic approach to activate Na+ channels and elicit action potentials in Xenopus laevis oocytes. All recordings were performed by the two-microelectrode technique. We first coupled channelrhodopsin-2 (ChR2), a light-sensitive ion channel of the green alga Chlamydomonas reinhardtii, to the auxiliary β1 subunit of voltage-gated Na+ channels. The resulting fusion construct, β1-ChR2, retained the ability to modulate Na+ channel kinetics and generate photosensitive inward currents. Stimulation of Xenopus oocytes coexpressing the skeletal muscle Na+ channel Nav1.4 and β1-ChR2 with 25-ms lasting blue-light pulses resulted in rapid alterations of the membrane potential strongly resembling typical action potentials of excitable cells. Blocking Nav1.4 with tetrodotoxin prevented the fast upstroke and the reversal of the membrane potential. Coexpression of the voltage-gated K+ channel Kv2.1 facilitated action potential repolarization considerably. Light-induced action potentials were also obtained by coexpressing β1-ChR2 with either the neuronal Na+ channel Nav1.2 or the cardiac-specific isoform Nav1.5. Potential applications of this novel optogenetic tool are discussed.
Selective profiling of N- and C-terminal nucleotide-binding sites in a TRPM2 channel
Authors: Tóth Balázs , Iordanov Iordan , Csanády László
Published: March 2020

Transient receptor potential melastatin 2 (TRPM2) is a homotetrameric Ca2+-permeable cation channel important for the immune response, body temperature regulation, and insulin secretion, and is activated by cytosolic Ca2+ and ADP ribose (ADPR). ADPR binds to two distinct locations, formed by large N- and C-terminal cytosolic domains, respectively, of the channel protein. In invertebrate TRPM2 channels, the C-terminal site is not required for channel activity but acts as an active ADPR phosphohydrolase that cleaves the activating ligand. In vertebrate TRPM2 channels, the C-terminal site is catalytically inactive but cooperates with the N-terminal site in channel activation. The precise functional contributions to channel gating and the nucleotide selectivities of the two sites in various species have not yet been deciphered. For TRPM2 of the sea anemone Nematostella vectensis (nvTRPM2), catalytic activity is solely attributable to the C-terminal site. Here, we show that nvTRPM2 channel gating properties remain unaltered upon deletion of the C-terminal domain, indicating that the N-terminal site is single-handedly responsible for channel gating. Exploiting such functional independence of the N- and C-terminal sites, we selectively measure their affinity profiles for a series of ADPR analogues, as reflected by apparent affinities for channel activation and catalysis, respectively. Using site-directed mutagenesis, we confirm that the same N-terminal site observed in vertebrate TRPM2 channels was already present in ancient cnidarians. Finally, by characterizing the functional effects of six amino acid side chain truncations in the N-terminal site, we provide first insights into the mechanistic contributions of those side chains to TRPM2 channel gating.
A substitution method for nanoscale capacitance calibration using scanning microwave microscopy
Authors: Morán-Meza José A , Delvallée Alexandra , Allal Djamel , Piquemal François
Published: March 2020

This paper presents a calibration method and an uncertainty budget for capacitance measurements performed on micrometric size capacitors at microwave frequencies and nanometric resolution using a scanning microwave microscopy (SMM). The method applies the classical one-port vector network analyzer calibration for SMM using three known capacitance standards. These standards are established from a commercial calibration kit placed close to the microcapacitors in order to be calibrated. The calibration kit is composed of a large number of Metal-Oxide-Semiconductor (MOS) microcapacitors with capacitance values C ranging from 0.1 fF to 8.6 fF. Diligent selection criteria were established for the choice of the three capacitors. Their capacitance values were calculated from the AFM measured values of the area of the top electrodes and the dielectric thickness and considering the contribution of fringing fields. The combined type uncertainty on these calculated values amounts between 5% and 14% in relative value (uncertainty given at one standard deviation). The comparison between the capacitance values measured on calibration kit capacitors using the calibrated SMM and the calculated values show a good agreement for capacitances higher than 0.8 fF within uncertainties varying between 6% and 9%. For smaller capacitances, most of the observed deviations are not significant at two standard deviations. The uncertainties are mostly dominated by dimensional measurements and less importantly by unwanted capacitance effects. Based on these results, capacitances of two sets of microcapacitors were calibrated. The combined uncertainties vary from 14% to 7% for capacitances ranging from 0.1 fF to 3.1 fF respectively. The permittivity values of the dielectric layer of the two samples have been determined. They are found equal to 4.0 and 4.1 with a standard uncertainty of 0.6 and correlate with the expected value of 3.9.
A detailed comparison of measured and simulated optical properties of a short-period GaAs/AlxGa1−xAs distributed Bragg reflector
Authors: Wilson T J , Hodgson P D , Robson A J , Jackson C , Grew B , Hayne M
Published: March 2020

A 6-period GaAs/Al0.9Ga0.1As distributed Bragg reflector (DBR) has been grown and its optical properties have been both measured and simulated. Incremental improvements were made to the simulation, allowing it to account for internal consistency error, incorrect layer thicknesses, and absorption due to substrate doping to improve simulation accuracy. A compositional depth profile using secondary-ion mass spectrometry (SIMS) has been taken and shows that the Al fraction averages 88.0% ± 0.3%. It is found that the amplitude of the transmission is significantly affected by absorption in the n-doped GaAs substrate, even though the energy of the transmitted light is well below the GaAs band gap. The wavelength of the features in the transmission spectrum are mostly affected by DBR layer thicknesses. On the other hand, the transmission spectrum is found to be relatively tolerant to changes to Al fraction.
Semi polar compounds from lemon-local: Focus on lipid metabolism
Authors: Yulianti A B , Raudina S I , Amrulloh R M , Ekowati R A R , Furqaani A R , Tejasari M , Dewi M K
Published: March 2020

The study aim was analyzed the potential of semi polar compounds from lemon-local on old mice lipid profile with high fat dietary. Experimental study using DDY mice, males, 50−55 weeks. Five of 30 mice were sacrificed before treatment (group 6), group 1 (negative control), groups 2, 3, 4 and 5 were fed high fat dietary, group 3, 4 and 5 were treated doses 1, 2 and 3, respectively, orally. Parameters measured were body weight, HDL, TAG, total cholesterol. The results showed body weight of mice were above normal and dose 2 treatment cause weight loss (p=0.658). The highest cholesterol level was in positive control and the lowest was in the group given doses 2 (p=0.042). The highest triglycerides level was in the pretreatment group and the lowest was in the group given doses 2 (p=0.148). The highest HDL was in the positive group and the lowest was in the group given doses 2 (p=0.278). Semi polar compound from lemon-local at dose 2 could be regulated profile lipid on old mice with high fat dietary. This research needs to be improved, especially biomechanism of active substances.
Incremental ratio of urea: Urease in alkaline hydrolysis of dried kume grass (Sorghum plumosum var. Timorense) improves its nutritive values
Authors: Dato T O D , Mullik M L
Published: March 2020

This experiment aimed at assessing effects of alkaline hydrolysis using rice husk ash filtrate (RHAF) with or without urea and urease enzyme on nutrient content of dried kume grass. A 6x3 completely randomized design was employed to test 6 treatments, namely RK1 = dried kume grass sprayed with RHAF (15% w/v) and hydrolysed for 3 hours, RK2 = Like RK1 + urea 4%, RK3 = Like RK2 plus urease for urea: urease ratio of 1:2 or 1:3 (RK4) or 1:4 (RK5) or 1:5 (RK6). Measured variables were dry matter (DM), organic matter (OM), crude protein (CP), and crude lipid (CL). General linear model for CRD was employed in data analysis, and Duncan test for treatment difference. Results showed that increased urea: urease ratio significantly effecting CP and CL content, yet no difference between 1:4 and 1:6 ratios. The lowest improvement was in RK1 (7.41% CP and 41.93% CL) and the highest was in RK6 (22.75% CP and 210.16% CL). In the contrary, all treated groups showed a decline in DM and OM. It is concluded that alkaline hydrolysis using RHAF plus urea: urease ratio at 1:4 is the best treatment to improve the nutritive value of dried kume grass.
Ethanolic extracts of pleurotus ostreatus in the prevention of raised body temperature and C-Reactive Protein
Authors: Rahimah S B , Putri R K , Hendrayani V , Maharani W , Hartati J , Djunaedi D D , Soeroto A Y , Bisri T
Published: March 2020

Anti-inflammatory effect of ethanolic extractions of Pleurotus ostreatus would measure on body temperature and the C-Reactive protein (CRP) in rats induced by carrageenan. In this study, 30 rats were divided; group I (normal control) group II (negative control- caraggenan), group III (positive control- ibuprofen 400 mg / time), group IV and V (treatment I and II: ethanolic extract at 250 and 500 mg / kg BB). The Rats’ body temperature was measured at 0, 2, 4, 6 hours and at the 6th hour the qualitative and semiquantitative CRP was examined. The results showed that the temperature was reduced in the 1st to 6th hour, with different patterns. The Kruskal Wallis test shows significant P-values in the 2nd hour (0.02) and 6th (0.02). The qualitative CRP was analyzed using the Fisher Test and showed a significance at 1:2 dilutions (p=0), while the semiquantitative CRP is only at 1: 1 a dilution (p=0.0). The ethanol extraction of Pleurotus ostreatus at the dose of 250 mg and 500 mg / Kg BB showed a decrease in temperature and CRP, which was quite good when compared with ibuprofen. This result confirms about anti-inflammatory effect of the mushroom.
Decision support system selection of tender winners project development building of STMIK STIKOM Indonesia with TOPSIS method
Authors: Putra D M D U , Pratama P A
Published: March 2020

STMIK STIKOM Indonesia is a college that has been established since 2008. In the process to build the existing building on STMIK STIKOM Indonesia, should used the contractor that have to meet some criteria such as Letter of Offer, Certificate of Registered as a service provider, Tax Document, Building Design Picture, Implementation schedule, Construction Business License, Company’s experience in last 3 years and price, which takes at least 2 months to get a winning contractor whereas the desired building should be built immediately to be used in teaching and learning activities. To produce a decision support system for the selection of the tender winner, this study using the TOPSIS method. TOPSIS is one of the multicriteria decision-making methods that are widely used to process decisions practically. The resulting system can help the decision maker to determine the contractor who won the tender of building projects in STMIK STIKOM Indonesia.
The existence of traditional Balinese architecture on Puri and Umah
Authors: Indriani M N , Widyatmika M A , Mahapatni I A P S , Wardani A A A C
Published: March 2020

Balinese architecture, basically, is seeking for the harmony between The Creator, the human and the environment which is stated in the local religious concept Tri Hita Karana. Nowadays Balinese architecture style has grown rapidly with influences of the externals. The research aims to find out the existence of Balinese architecture as cultural tourism potency of Denpasar as the main gate of Bali, especially in the traditional Balinese building namely puri and umah. This research uses a qualitative method that starts with data mining of respondent’s views descriptively, in-depth interviews, and the interpretation of both respondents and researcher as the found concept. This qualitative research proceeds inductively begin with obtaining detailed data, categorizing data, abstracting, and determining the concepts as a finding. The sampling technique is purposive sampling. Data collected by observation, interview, and documentation. From the theory of style and theory of decorative architecture, the existence of Balinese architecture in the traditional puri and umah, seen significantly developed in the zone of pawongan and palemahan without ignoring the ergonomic factor. Similarly, the traditional puri and umah used the ornament that not carved. In the parahyangan area, there are insignificant changes in the materials and colours.
An android-based application to predict student with extraordinary academic achievement
Authors: Sudipa I G I , Wijaya I N S W , Radhitya M L , Mahawan I M A , Arsana I N A
Published: March 2020

The study period of students who pass the time limit and high numbers of dropout in a college can affect the value of campus accreditation. The anticipation of that possibility, the college must make predictions about potential students don’t graduate on time. This study aims to build a system capable of predicting students who have the potential. If students with unpredictable graduation risks can be identified in the early stages, then the indication of dropout rates may be reduced by providing special appeals to students at risk. Prediction analysis applies the K-Nearest Neighbors method to dig up the trace data stack and look for the proximity of the data with the new data. The test data used student class of 2011 with 100 students as sample data. This method of classification is based on several attributes, namely the evaluation of the 1st semester to semester 6th, the number of GPA, credits that have been taken each semester, number of credits passed, and the number of credits that didn’t pass. The result of classification becomes the output of the system which is then entered into the testing phase. This stage compares the output with the original data with 70, 73% accuration result.
A mobile-based application for children emergency identification training for mothers
Authors: Awalia F , Septriana D , Afziani B , Budiman B , Romadhona N
Published: March 2020

Melong is a dense district in West Java of Indonesia and mostly occupied by pre-prosperous families, therefore the probability to be exposed with a pediatric emergency situation is large. The intervention was dedicated to preparing the community in identifying the pediatric emergency situation. The preliminary survey was conducted to identify household with toddlers. The mother of correspondent households was gathered in a forum and the baseline data about their knowledge in a pediatric emergency situation were measured twice, before and after the intervention. The intervention given in this public service is group discussion between a pediatrician, public health specialists, and the mothers. After the intervention had given, the mothers were explained and equipped by tools that would be useful to identify (and to cope) with problems such as a thermometer, water bladder, and measuring glass. Most of the respondents filled the questionnaires, they were mothers with children or grandchildren at home. The intervention method was successful to increase the pediatric emergency identification. Further evaluation for consistency of knowledge at home is needed due to rare chances of emergency situation.
Calculating blood pressure and BMI increase caused by night shift construction working using an android-based application
Authors: Rahmawaty I , Batara T , Nafiani N , Diandra D
Published: March 2020

The purpose of this study was to assess cardio metabolic disorders earlier by measuring Body Mass Index (BMI), Blood Pressure and Physical Fitness (VO2max). This study was an observational study with cross sectional approach conducted on CV Harith construction by taking subject of 30 peoples by randomly purposive which met the inclusion criteria. Workers shifted morning work then performed night shift each for 2 weeks before they were measured. This study uses the Dependent t test to determine morning and night shift differences. The results showed that there were significant increased on BMI and blood Pressure with p less than 0, 001 but there was no significant decreases on Physical fitness among night and day shift working. This study shows night shift in construction workers causes a significant increase in blood pressure and BMI but does not show significant changes in worker physical fitness.
The development of digital comic on ecosystem for thematic learning in elementary schools
Authors: Mustikasari L , Priscylio G , Hartati T , Sopandi W
Published: March 2020

This research aims to generate digital comic on ecosystem for thematic learning in elementary school. Research and development was used as method of the study. This study was conducted with five-grade students in five Public Elementary Schools, two Private Elementary Schools and two Integrated Islamic Primary Schools. The instruments of data collection used in this study were questionnaire and interview. The students questionnaire responses was analysed qualitative and quantitative for each item. The validity test of the developed digital comic on ecosystem is good validity categories. This finding also suggests that the developed digital comic can increase students’ motivation and interest in thematic learning. The development of digital comic learning media on thematic learning in elementary schools can motivate students in the learning process worthy of being used in learning. The feasibility of comic media is shown by the assessment of material experts by 3.51 (good), media expert’s assessment of 4.01 (good), teacher’s assessment as an education practitioner by 3.9 (good) and student questionnaire assessment by 3.93 (good).
The impact of parental education levels on digital skills of students in urban sprawl impacted areas
Authors: Warih M P , Rindarjono M G , Nurhadi N
Published: March 2020

The current research will describe developing cities in developing countries especially in Indonesia representing polycentric or urban sprawl growth patterns. The purpose of this study is to identify the influence of the level of education parents have on the digital expertise of students in supporting learning in urban sprawl impacted areas, this is intended to recommend handling the problem of low levels of knowledge of students about the use of technology to support learning and so that students have good digital expertise to support his work in the future. Data analysis used is descriptive qualitative to explore social factors of the community and students who develop in Colomadu District. Data were obtained through interview methods accompanied by questionnaires in the study area. The results of this study illustrate that the low level of education of parents will lead to low income and socio-economic conditions, thus becoming a barrier to information and digital abilities of students in urban sprawl affected areas. Students tend to have digital expertise when the level of education of parents is in a good level and has a good economic level, besides that it is found that regional development does not necessarily have a positive impact on increasing students’ knowledge about technology. Furthermore, the low level of digital ability of students will be predicted to become an obstacle in the future.
Distribution of lesson within Indonesian latest curriculum using a web-based application
Authors: Ningsih D S , Rohman A
Published: March 2020

This study aims to explain and to describe the role of school principals in the implementation of 2013 Curriculum at Elementary School Pakem 2 Sleman Yogyakarta. This study uses qualitative method. The instruments of the research were observation, interview and documentation. It is where the researcher seeks to collect and analyze research data through primary data sources in the form of structured interviews with the principal regarding the role of school principal in implementation of 2013 Curriculum. The results of this research show that school principals have played good roles in implementation of 2013 Curriculum in Elementary School Pakem 2 Sleman Yogyakarta. The roles are such as: (a) role as an educator, (b) role as a manager, (c) role as an administrator, (d) role as a supervisor, (e) role as a leader, (f) role as an innovator, and (g) role as a motivator. Collaboration between school principals, school supervisor, and teacher has been maximizing in implementing curriculum in this school. The school principal is very open minded to anyone who wants to give input form of suggestions or criticisms for the progress of the school.
Digital detector on bureau classification of Indonesia: A case study of self-unloading vessel bought from China
Authors: Danny F , Muswar M , Fridolini F
Published: March 2020

In the implementation of the principle of sabotage (Presidential Instruction Number 5 in 2005) about the empowerment of the cruise industry nationwide, the Government issued new rules for the shipping industry operating in Indonesia the fulfilment of class acceptance requirements for foreign vessels that have been purchased and operating in the Indonesian territory becomes an important concern, so that all ships sailing within the territory of Indonesia have been registered in the Indonesian Classification Bureau, its consequences are to be classed in the domestic ship classification and in this case is the Bureau Classification of Indonesia (BKI). This research used the descriptive methods with the literature data from mandatory ship classification is done for the sake of safety, as one of the tools to measure the worth or not to sail. Requirements of classification more focus on the technical requirements and calculations of a hull construction, stability, electrical machinery, and the supporting system of the vessel operating systems such as boilers, steering system, and others. Because this research is foreign vessels purchased from China, in the case of foreign vessel classifications purchased and then operated in the territory of Indonesia, it is obligatory to carry out a classification in the Indonesian Classification Bureau (BKI) and fulfill the requirements for finished shipbuilding class acceptance procedures, and then BKI issued a Temporary Classification Certification and Temporary Load Line Certificate.
Inventory control using ABC and min-max analysis on retail management information system
Authors: Asana I M D P , Radhitya M L , Widiartha K K , Santika P P , Wiguna I K A G
Published: March 2020

Determination of reorder point aims to meet the safety stock. This is a central parameter of inventory control. This study aims to find reorder point based on goods classification and safe stock. This approach is implemented in retail information systems that have been running. The information system has about 15.000 active items with the number of sales transactions around 1.100 per day. The problem in determining the reorder point is the unavailability of the safe stock reference. Lack of safe stock information triggered the ordering goods error. This error causes over stock. It can increase the potential of expired goods. In this study the researcher classifies the goods and determines the amount of safe stock to control the inventory. We used ABC analysis method for goods classification. It divides the group of goods into A, B, C, and D. The amount of safe stock is determined based on the goods sale’s history using Min Max Analysis method. Classification result is used to determine the limits on the inventory of allowed items to be ordered. Limitation safety stock amount refers to the limits from the min max method result. While, testing is done by comparing cost before and after implementation of this method.
Designing a solar power plant model as an energy mix at Darma Persada University
Authors: Suherman E , Astuty E Y
Published: March 2020

Universitas Darma Persada (Unsada) energy profile has an average of almost 2300 kWh everyday. This energy profile is quite high especially at noon, and the existence of solar power plant potential as an electricity producers shows that it is appropriate if Unsada were pushed to utilize this electricity producers as a diffusion of energy supply. Therefor a research is needed especially in power usage data, daily insulation data, solar power plant production specification data from power plant and regulations on the use of renewable energy, electricity to be supplied and power plant system. From the results of processing the data, will be obtained an output of Electricity System and Unsada Electric Energy profile. The solar power plant system that will be develop for the additional power supply is a hybrid solar power system with power plant electrical supply which power is generated at 50.4 kWp. 420 m2 of land is required for the installation of solar panels (can be installed on additional power roofs) and as many as 336 solar panels with 4 locations in each location of 84 solar panels.
Antioxidant activity of loloh Malaka fruit (Phyllanthus emblica L.) in Ayurveda Medication: How it supports environmental conservation
Authors: Cahyaningrum P L , Yuliari S A M , Putra C , Suta I B P
Published: March 2020

Traditional medication method in Bali use the Ayurveda principle known as Usadha. Usadha used herb or fruit as main component of medicine. One of them is Malaka fruit (Phyllanthus emblica L.) and commonly in Bali known as kalimaka, kalimoko, kamlika. Malaka can be processed through boiling using water and consumed as traditional drink (loloh). Malaka fruit has been known to contain vitamin C as antioxidant. Therefore, this research aims to determinant the antioxidant activity of malaka fruit loloh using DPPH (2,2-difenil-1-pikrillhidrazil). The result showed that malaka fruit loloh obtained was antioxidant activity with antioxidant capacity 164 mg/100 mL and IC50 691,1 µg/Ml. Further contains vitamin C obtained was 0,184 mg/100mL, Flavonoid was 3,15 mg/100mL, phenol was 375 mg/100mL and tannin was 546 mg/mL. Based on these result malaka fruit loloh can be use as on alternative for traditional medication.
The role of the informal sector of waste management
Authors: Satori M , Aviasti A , Amaranti R , Shofia N , Utami R P , Faikar F A
Published: March 2020

Garbage, on the one hand, is an environmental problem, but on the other hand, it can give the potential economically. One indication of it there are IS activities that collect certain types of waste as recycled materials and then sold to the recycling industry. This research aims to determine the role of IS of solid waste management (SWM) in Bandung municipality. The study used mixed method research, which is a combination of qualitative and quantitative. The results of this study concluded that the estimated number of scavengers as IS in Bandung municipality is about 3990 people, and contributed to the reduction of waste about 6, 8% of the total solid waste generation. As economically, the average income of IS is IDR 1 million/person/month. Considering the role of IS both in SWM contexts and in economic contexts, the government must be to make a policy to integrate the IS with SWM. Base on the AHP methods, this study recommended that to integrated IS of SWM can be developed by facilitating them at TPS/TPS 3R.The implication of the strategy that the existence of IS will be more organized and reduce waste generation to the maximum.
Soil erosion in agroforestry development in South Bandung Region, Indonesia
Authors: Chofyan I , Andriani D I
Published: March 2020

Forest is an ecosystem unit in the form of a stretch of land containing biological natural resources dominated by trees in its natural environment. Ecologically, the function of forests is to absorb rainwater to prevent erosion. Land conversion of forest to other uses causes disturbed ecological functions of the forest. The agroforestry system is a land optimization system by combining the components of perennial woody crops, agricultural crops and also livestock. Agroforestry systems have become one of the alternative systems to overcome problems that arise due to the high of land conversion. Bandung District recommends 3 types of agricultural crops in the development of agroforestry in the South Bandung Region, namely coffee and tea, which are perennial crops, and vegetable crops which are annual crops. The purpose of this study is to compare the erosion level of the three types of plants used for agroforestry. The method used in this study are land suitability analysis and erosion estimation analysis. The final results of this study conclude that the erosion level of perennial crops is lower than annual crops.